# dns/trunk/DNSDB.pm # Abstraction functions for DNS administration ## # $Id: DNSDB.pm 897 2025-08-08 16:36:19Z kdeugau $ # Copyright 2008-2025 Kris Deugau # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . ## package DNSDB; use strict; use warnings; use Exporter; use DBI; use Net::DNS; use Crypt::PasswdMD5; use Digest::MD5 qw(md5_hex); use Net::SMTP; use NetAddr::IP 4.027 qw(:lower); use POSIX; use Fcntl qw(:flock); use Time::TAI64 qw(:tai64); use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); $VERSION = 1.3; ##VERSION## @ISA = qw(Exporter); @EXPORT_OK = qw( &initGlobals &login &initActionLog &getPermissions &changePermissions &comparePermissions &changeGroup &connectDB &finish &addDomain &delZone &domainName &revName &domainID &revID &addRDNS &getZoneCount &getZoneList &getZoneLocation &addGroup &delGroup &getChildren &groupName &getGroupCount &getGroupList &addUser &updateUser &delUser &userFullName &userStatus &getUserData &getUserCount &getUserList &getUserDropdown &addLoc &updateLoc &delLoc &getLoc &getLocCount &getLocList &getLocDropdown &getSOA &updateSOA &getRecLine &getRecList &getRecCount &addRec &updateRec &delRec &getLogCount &getLogEntries &getRevPattern &getTypelist &parentID &isParent &zoneStatus &getZonesByCIDR &importAXFR &export &mailNotify %typemap %reverse_typemap @permtypes $permlist %permchains ); @EXPORT = qw(%typemap %reverse_typemap @permtypes $permlist %permchains); %EXPORT_TAGS = ( ALL => [qw( &initGlobals &login &initActionLog &getPermissions &changePermissions &comparePermissions &changeGroup &connectDB &finish &addDomain &delZone &domainName &revName &domainID &revID &addRDNS &getZoneCount &getZoneList &getZoneLocation &addGroup &delGroup &getChildren &groupName &getGroupCount &getGroupList &addUser &updateUser &delUser &userFullName &userStatus &getUserData &getUserCount &getUserList &getUserDropdown &addLoc &updateLoc &delLoc &getLoc &getLocCount &getLocList &getLocDropdown &getSOA &updateSOA &getRecLine &getRecList &getRecCount &addRec &updateRec &delRec &getLogCount &getLogEntries &getRevPattern &getTypelist &parentID &isParent &zoneStatus &getZonesByCIDR &importAXFR &export &mailNotify %typemap %reverse_typemap @permtypes $permlist %permchains )] ); our $errstr = ''; our $resultstr = ''; # Arguably defined wholly in the db, but little reason to change without supporting code changes # group_view, user_view permissions? separate rDNS permission(s)? our @permtypes = qw ( group_edit group_create group_delete user_edit user_create user_delete domain_edit domain_create domain_delete record_edit record_create record_delete record_locchg location_edit location_create location_delete location_view self_edit admin ); our $permlist = join(',',@permtypes); # Some permissions more or less require certain others. our %permchains = ( user_edit => 'self_edit', location_edit => 'location_view', location_create => 'location_view', location_delete => 'location_view', record_locchg => 'location_view', ); # DNS record type map and reverse map. # loaded from the database, from http://www.iana.org/assignments/dns-parameters our %typemap; our %reverse_typemap; ## (Semi)private variables # Hash of functions for validating record types. Filled in initGlobals() since # it relies on visibility flags from the rectypes table in the DB my %validators; # Entity-relationship reference hashes. my %par_tbl = ( group => 'groups', user => 'users', defrec => 'default_records', defrevrec => 'default_rev_records', domain => 'domains', revzone => 'revzones', record => 'records' ); my %id_col = ( group => 'group_id', user => 'user_id', defrec => 'record_id', defrevrec => 'record_id', domain => 'domain_id', revzone => 'rdns_id', record => 'record_id', ); my %par_col = ( group => 'parent_group_id', user => 'group_id', defrec => 'group_id', defrevrec => 'group_id', domain => 'group_id', revzone => 'group_id', record => 'domain_id' ); my %par_type = ( group => 'group', user => 'group', defrec => 'group', defrevrec => 'group', domain => 'group', revzone => 'group', record => 'domain' ); ## ## Constructor and destructor ## sub new { my $this = shift; my $class = ref($this) || $this; my %args = @_; # Prepopulate a basic config. Note some of these *will* cause errors if left unset. # note: add appropriate stanzas in __cfgload() to parse these my %defconfig = ( # The only configuration options not loadable from a config file. configfile => "/etc/dnsdb/dnsdb.conf", ##CFG_LEAF## # Database connection info dbname => 'dnsdb', dbuser => 'dnsdb', dbpass => 'secret', dbhost => '', # Email notice settings mailhost => 'smtp.example.com', mailnotify => 'dnsdb@example.com', # to mailsender => 'dnsdb@example.com', # from mailname => 'DNS Administration', orgname => 'Example Corp', domain => 'example.com', # Template directory templatedir => 'templates/', # fmeh. this is a real web path, not a logical internal one. hm.. # cssdir => 'templates/', sessiondir => 'session/', exportcache => 'cache/', usecache => 1, # do we bother using the cache above? # BIND-style zone export # should arguably inherit something from BIND defaults for /var/named? bind_export_zone_path => 'zones/', bind_export_conf_path => 'zones.conf', bind_export_shortlines => 0, bind_export_autoexpire_ttl => 15, # Session params timeout => '1h', # passed as-is to CGI::Session # Other miscellanea log_failures => 1, # log all evarthing by default perpage => 15, maxfcgi => 10, # reasonable default? force_refresh => 1, lowercase => 0, # mangle as little as possible by default # show IPs and CIDR blocks as-is for reverse zones. valid values are # 'none' (default, show natural IP or CIDR) # 'zone' (zone name, wherever used) # 'record' (IP or CIDR values in reverse record lists) # 'all' (all IP values in any reverse zone view) showrev_arpa => 'none', # Two options for template record expansion: template_skip_0 => 0, # publish .0 by default template_skip_255 => 0, # publish .255 by default # allow TXT records to be dealt with mostly automatically by DNS server? autotxt => 1, ); # Config file parse calls. # If we are passed a blank argument for $args{configfile}, # we should NOT parse the default config file - we will # rely on hardcoded defaults OR caller-specified values. # If we are passed a non-blank argument, parse that file. # If no config file is specified, parse the default one. my %siteconfig; if (defined($args{configfile})) { if ($args{configfile}) { return if !__cfgload($args{configfile}, \%siteconfig); } } else { return if !__cfgload($defconfig{configfile}, \%siteconfig); } # Assemble the object. Apply configuration hashes in order of precedence. my $self = { # Hardcoded defaults %defconfig, # Default config file OR caller-specified one, loaded above %siteconfig, # Caller-specified arguments %args }; bless $self, $class; # Several settings are booleans. Handle multiple possible ways of setting them. for my $boolopt ('log_failures', 'force_refresh', 'lowercase', 'usecache', 'bind_export_shortlines', 'template_skip_0', 'template_skip_255', 'autotxt') { if ($self->{$boolopt} ne '1' && $self->{$boolopt} ne '0') { # true/false, on/off, yes/no all valid. if ($self->{$boolopt} =~ /^(?:true|false|t|f|on|off|yes|no)$/) { if ($self->{$boolopt} =~ /(?:true|t|on|yes)/) { $self->{$boolopt} = 1; } else { $self->{$boolopt} = 0; } } else { warn "Bad $boolopt setting $self->{$boolopt}, using default\n"; $self->{$boolopt} = $defconfig{$boolopt}; } } } # Enum-ish option(s) if (!grep /$self->{showrev_arpa}/, ('none','zone','record','all')) { warn "Bad showrev_arpa setting $self->{showrev_arpa}, using default\n"; $self->{showrev_arpa} = 'none'; } # Try to connect to the DB, and initialize a number of handy globals. $self->{dbh} = connectDB($self->{dbname}, $self->{dbuser}, $self->{dbpass}, $self->{dbhost}) or return; $self->initGlobals(); return $self; } sub DESTROY { my $self = shift; $self->{dbh}->disconnect if $self->{dbh}; } sub errstr { $DNSDB::errstr; } ## ## utility functions ## ## DNSDB::_zonetable() # Takes default+rdns flags, returns appropriate zone table name sub _zonetable { my $def = shift; my $rev = shift; return 'domains' if $rev ne 'y'; return 'revzones'; } # end _zonetable() ## DNSDB::_rectable() # Takes default+rdns flags, returns appropriate table name sub _rectable { my $def = shift; my $rev = shift; return 'records' if $def ne 'y'; return 'default_records' if $rev ne 'y'; return 'default_rev_records'; } # end _rectable() ## DNSDB::_recparent() # Takes default+rdns flags, returns appropriate parent-id column name sub _recparent { my $def = shift; my $rev = shift; return 'group_id' if $def eq 'y'; return 'rdns_id' if $rev eq 'y'; return 'domain_id'; } # end _recparent() ## DNSDB::_ipparent() # Check an IP to be added in a reverse zone to see if it's really in the requested parent. # Takes default and reverse flags, IP (fragment) to check, parent zone ID, # and a reference to a NetAddr::IP object (also used to pass back a fully-reconstructed IP for # database insertion) sub _ipparent { my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my $val = shift; my $id = shift; my $addr = shift; return if $revrec ne 'y'; # this sub not useful in forward zones $$addr = NetAddr::IP->new($$val); #necessary? # subsub to split, reverse, and overlay an IP fragment on a netblock sub __rev_overlay { my $splitme = shift; # ':' or '.', m'lud? my $parnet = shift; my $val = shift; my $addr = shift; my $joinme = $splitme; $splitme = '\.' if $splitme eq '.'; my @working = reverse(split($splitme, $parnet->addr)); my @parts = reverse(split($splitme, $$val)); for (my $i = 0; $i <= $#parts; $i++) { $working[$i] = $parts[$i]; } my $checkme = NetAddr::IP->new(join($joinme, reverse(@working))) or return 0; return 0 unless $checkme->within($parnet); $$addr = $checkme; # force "correct" IP to be recorded. return 1; } my ($parstr) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id = ?", undef, ($id)); my $parnet = NetAddr::IP->new($parstr); # Fail early on v6-in-v4 or v4-in-v6. We're not accepting these ATM. return 0 if $parnet->addr =~ /\./ && $$val =~ /:/; return 0 if $parnet->addr =~ /:/ && $$val =~ /\./; if ($$addr && ($$val =~ /^[\da-fA-F][\da-fA-F:]+[\da-fA-F]$/ || $$val =~ m|/\d+$|)) { # the only case where NetAddr::IP's acceptance of legitimate IPs is "correct" is for a proper IPv6 address, # or a netblock (only expected on templates) # the rest we have to restructure before fiddling. *sigh* return 1 if $$addr->within($parnet); } else { # We don't have a complete IP in $$val (yet)... unless we have a netblock if ($parnet->addr =~ /:/) { $$val =~ s/^:+//; # gotta strip'em all... return __rev_overlay(':', $parnet, $val, $addr); } if ($parnet->addr =~ /\./) { $$val =~ s/^\.+//; return __rev_overlay('.', $parnet, $val, $addr); } # should be impossible to get here... } # ... and here. # can't do nuttin' in forward zones } # end _ipparent() ## DNSDB::_maybeip() # Wrapper for quick "does this look like an IP address?" regex, so we don't make dumb copy-paste mistakes sub _maybeip { my $izzit = shift; # reference return 1 if $$izzit =~ m,^(?:[0-9\.]+|[0-9a-fA-F:]+)(?:/[0-9]+)?$,; } ## DNSDB::_inrev() # Check if a given "hostname" is within a given reverse zone # Takes a reference to the "hostname" and the reverse zone CIDR as a NetAddr::IP # Returns true/false. Sets $errstr on errors. sub _inrev { my $self = shift; my $dbh = $self->{dbh}; # References, since we might munge them my $fq = shift; my $zone = shift; # set default error $errstr = "$$fq not within $zone"; # Unlike forward zones, we will not coerce the data into the reverse zone - an A record # in a reverse zone is already silly enough without appending a mess of 1.2.3.in-addr.arpa # (or worse, 1.2.3.4.5.6.7.8.ip6.arpa) on the end of the nominal "hostname". # We're also going to allow the "hostname" to be stored as .arpa or IP, because of # non-IP FQDNs in .arpa if ($$fq =~ /\.arpa$/) { # "FQDN" could be any syntactically legitimate string, but it must be within the formal # .arpa zone. Note we're not validating these for correct reverse-IP values. # yes, we really need the v6 branch on the end here. $zone = _ZONE($zone, 'ZONE', 'r', '.').($zone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); return unless $$fq =~ /$zone$/; } else { # in most cases we should be getting a real IP as the "FQDN" to test my $addr = new NetAddr::IP $$fq if _maybeip($fq); # "FQDN" should be a valid IP address. Normalize formatting if so. if (!$addr) { $errstr = "$$fq is not a valid IP address"; return; } return if !$zone->contains($addr); ($$fq = $addr) =~ s{/(?:32|128)$}{}; } return 1; } # end _inrev() ## DNSDB::_hostparent() # A little different than _ipparent above; this tries to *find* the parent zone of a hostname # Takes a hostname. # Returns the domain ID of the parent domain if one was found. sub _hostparent { my $self = shift; my $dbh = $self->{dbh}; my $hname = shift; $hname =~ s/^\*\.//; # this should be impossible to find in the domains table. my @hostbits = split /\./, $hname; my $sth = $dbh->prepare("SELECT count(*),domain_id FROM domains WHERE lower(domain) = lower(?) GROUP BY domain_id"); foreach (@hostbits) { $sth->execute($hname); my ($found, $parid) = $sth->fetchrow_array; if ($found) { return $parid; } $hname =~ s/^$_\.//; } } # end _hostparent() ## DNSDB::_log() # Log an action # Takes a log entry hash containing at least: # group_id, log entry # and optionally one or more of: # domain_id, rdns_id, logparent # The %userdata hash provides the user ID, username, and fullname # Returns the log entry ID, mainly for use in bulk operations to allow a "parent" log entry # and a set of child entries (eg, domain add and the individual default-record-copy entries) sub _log { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; $args{rdns_id} = 0 if !$args{rdns_id}; $args{domain_id} = 0 if !$args{domain_id}; $args{logparent} = 0 if !$args{logparent}; ##fixme: farm out the actual logging to different subs for file, syslog, internal, etc based on config # if ($self->{log_channel} eq 'sql') { $dbh->do("INSERT INTO log (domain_id,rdns_id,group_id,logparent,entry,user_id,email,name) ". "VALUES (?,?,?,?,?,?,?,?)", undef, ($args{domain_id}, $args{rdns_id}, $args{group_id}, $args{logparent}, $args{entry}, $self->{loguserid}, $self->{logusername}, $self->{logfullname}) ); my ($log_id) = $dbh->selectrow_array("SELECT currval('log_log_id_seq')"); return $log_id; # } elsif ($self->{log_channel} eq 'file') { # } elsif ($self->{log_channel} eq 'syslog') { # } } # end _log() ## DNSDB::_updateserial() # Update the serial number on a forward and/or reverse zone, and flag it as changed # Takes a logdata hash sub _updateserial { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; ##fixme: refine to adjust for serial wraparound, ie, if switching from ISO to Unix, # the serial effectively runs backwards. technically this breaks AXFR slaves. ##perlnote # Nested subs... aren't. Subs have file or execution scope, sort of (not sure which ATM), so we # have to abuse the "anonymous sub" construct and bend our code in a pretzel to work around this limitation. # heavy lifting done in this sub-sub. updates may be needed on a forward zone, reverse zone, or both, depending. my $serup = sub { my $rev = shift; my $zid = shift; my $tname = _zonetable('n', $rev); my $pname = _recparent('n', $rev); my ($sertype,$serial) = $dbh->selectrow_array("SELECT sertype,zserial FROM $tname WHERE $pname = ?", undef, $zid) or die $dbh->errstr; if ($sertype eq 'U') { # Unix timestamp $dbh->do("UPDATE $tname SET changed = 'y',zserial = ? WHERE $pname = ?", undef, (scalar(time), $zid) ); } elsif ($sertype eq 'D') { # ISO datestamp (YYYYMMDDnn) my $newserial = strftime("%Y%m%d00", localtime); if ($newserial > $serial) { # new day, use the new serial $serial = $newserial; } else { # change on same day, increment existing serial $serial++; ##fixme: do we need to check for overflow? (eg 2020091599 -> 2020091600 despite not being 2020-09-16) # technically yes, practically no (effectively falls back to a variation of the simple sequential update) # - might be a local policy violation. also, any such zone is probably better served by a fixed stub # and DDNS as supported by BIND etc } $dbh->do("UPDATE $tname SET changed = 'y',zserial = ? WHERE $pname = ?", undef, ($serial, $zid) ); } elsif ($sertype eq 'S') { # Simple sequential number $dbh->do("UPDATE $tname SET changed = 'y', zserial = zserial + 1 WHERE $pname = ?", undef, $zid ); } else { ##fixme: just fall back to simple sequential? shouldn't be possible to have any value other than U, D, or S # Your llama is on fire } }; if ($args{rdns_id}) { &$serup('y', $args{rdns_id}); } if ($args{domain_id}) { &$serup('n', $args{domain_id}); } } # end _updateserial() ## DNSDB::_recfilter() # Utility sub to construct an SQL fragment for host/value filtering based on a filter argument # Deconstructs the argument to apply Postgres CIDR operators or Postgres string-matching operators as appropriate # Used by recSearchCount(), recSearch(), getRecList(), and getRecCount() # Takes a hash of: # filter - string to create SQL fragment from # sql - reference to SQL string. SQL fragment will be appended to this string # bindvars - reference to list of DBI bind variable scalars to be fed to DBI on execute sub _recfilter { my %args = @_; # flag for "was this an IPish filter argument?", since we want to fall through # to the second top-level if() if *any* of the ones in the first block fail my $ipfilt = 0; if ($args{filter} =~ /^\s*(<|<=|=|>=|>|<>|<<|<<=|>>|>>=)\s*([\da-fA-F].+)\s*$/) { # filter argument starts with a Postgres CIDR operator, followed by something that could be a CIDR value my $filt_op = $1; my $filt_val = $2; # do we have an IP-ish value? if ($filt_val =~ m,^(?:[\d.]+|[0-9a-f]+)(?:/\d+)?$,) { # now make sure my $tmp = new NetAddr::IP $filt_val; if ($tmp) { ${$args{sql}} .= " AND inetlazy(r.val) $filt_op ?"; push @{$args{bindvars}}, $filt_val; $ipfilt = 1; } # really looks like a valid IP/CIDR } # looks IPish } # has CIDR operator if (!$ipfilt) { # simple text matching, with a bit of mix-n-match to account for .arpa names ${$args{sql}} .= " AND (r.host ~* ? OR r.val ~* ? OR r.host ~* ? OR r.val ~* ?)"; my $tmp = join('.',reverse(split(/\./,$args{filter}))); push @{$args{bindvars}}, ($args{filter},$args{filter}); push @{$args{bindvars}}, ($tmp, $tmp); } } # _recfilter ## ## Record validation subs. ## ## All of these subs take substantially the same arguments: # a hash containing at least the following keys: # - defrec (default/live flag) # - revrec (forward/reverse flag) # - id (parent entity ID) # - host (hostname) # - rectype # - val (IP, hostname [CNAME/MX/SRV] or text) # - addr (NetAddr::IP object from val. May be undef.) # MX and SRV record validation also expect distance, and SRV records expect weight and port as well. # host, rectype, and addr should be references as these may be modified in validation # A record sub _validate_1 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # only for strict type restrictions # return ('FAIL', 'Reverse zones cannot contain A records') if $args{revrec} eq 'y'; if ($args{revrec} eq 'y') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); # ${$args{val}} is either a valid IP or a string ending with the .arpa zone name; # now check if it's a well-formed FQDN return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; # Check IP is well-formed, and that it's a v4 address # Fail on "compact" IPv4 variants, because they are not consistent and predictable. return ('FAIL',"A record must be a valid IPv4 address") unless ${$args{host}} =~ m{^\d+\.\d+\.\d+\.\d+(/\d+)?$}; $args{addr} = new NetAddr::IP ${$args{host}}; return ('FAIL',"A record must be a valid IPv4 address") unless $args{addr} && !$args{addr}->{isv6}; # coerce IP/value to normalized form for storage ${$args{host}} = $args{addr}->addr; # I'm just going to ignore the utterly barmy idea of an A record in the *default* # records for a reverse zone; it's bad enough to find one in funky legacy data. } else { # revrec ne 'y' # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); # Check if it's a proper formal .arpa name for an IP, and renormalize it to the IP # value if so. Done mainly for symmetry with PTR/A+PTR, and saves a conversion on export. if (${$args{val}} =~ /\.arpa$/) { my ($code,$tmp) = _zone2cidr(${$args{val}}); if ($code ne 'FAIL') { ${$args{val}} = $tmp->addr; $args{addr} = $tmp; } } # Check IP is well-formed, and that it's a v4 address # Fail on "compact" IPv4 variants, because they are not consistent and predictable. return ('FAIL',"A record must be a valid IPv4 address") unless ${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/; $args{addr} = new NetAddr::IP ${$args{val}}; return ('FAIL',"A record must be a valid IPv4 address") unless $args{addr} && !$args{addr}->{isv6}; # coerce IP/value to normalized form for storage ${$args{val}} = $args{addr}->addr; } return ('OK','OK'); } # done A record # NS record sub _validate_2 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # NS target check - IP addresses not allowed. Must be a more or less well-formed hostname. if ($args{revrec} eq 'y') { return ('FAIL', "NS records cannot point directly to an IP address") if ${$args{host}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } else { return ('FAIL', "NS records cannot point directly to an IP address") if ${$args{val}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } # Check that the target of the record is within the parent. if ($args{defrec} eq 'n') { # Check if IP/address/zone/"subzone" is within the parent if ($args{revrec} eq 'y') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); # Note the NS record may or may not be for the zone itself, it may be a pointer for a subzone return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); # ${$args{val}} is either a valid IP or a string ending with the .arpa zone name; # now check if it's a well-formed FQDN ##enhance or ##fixme # convert well-formed .arpa names to IP addresses to match old "strict" validation design return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; } else { # Forcibly append the domain name if the hostname being added does not end with the current domain name my $pname = $self->domainName($args{id}); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); } } else { # Default reverse NS records should always refer to the implied parent. if ($args{revrec} eq 'y') { ${$args{val}} = 'ZONE'; } else { ${$args{host}} = 'DOMAIN'; } } return ('OK','OK'); } # done NS record # CNAME record sub _validate_5 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # CNAMEs in reverse zones shouldn't be handled manually, they should be generated on # export by use of the "delegation" type. For the masochistic, and those importing # legacy data from $deity-knows-where, we'll support them. if ($args{revrec} eq 'y') { # CNAME target check - IP addresses not allowed. Must be a more or less well-formed hostname. return ('FAIL', "CNAME records cannot point directly to an IP address") if ${$args{host}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; if ($args{defrec} eq 'n') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); # CNAMEs can not be used for parent nodes; just leaf nodes with no other record types # note that this WILL probably miss some edge cases. if (${$args{val}} =~ /^[\d.\/]+$/) { # convert IP "hostname" to .arpa my $tmphn = _ZONE(NetAddr::IP->new(${$args{val}}), 'ZONE', 'r', '.'); my $tmpz = _ZONE($revzone, 'ZONE', 'r', '.'); return ('FAIL', "The bare zone may not be a CNAME") if $tmphn eq $tmpz; ##enhance: look up the target name and publish that instead on export } } ##enhance or ##fixme # convert well-formed .arpa names to IP addresses to match old "strict" validation design return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } else { # a bit expensive to put this here, but we need some kind of cheap flag for an RPZ zone with different rules my $zname = $self->domainName($args{id}); if ($zname =~ /\.rpz$/) { # RPZ domains consist almost entirely of CNAME records, and have special rules for their syntax # From the Unbound doc: https://unbound.docs.nlnetlabs.nl/en/latest/topics/filtering/rpz.html # Supposedly other overrides are also valid return ('FAIL', "Unsupported RPZ override ${$args{val}}") unless ${$args{val}} =~ /^(?:\.|\*\.|rpz-passthru\.|rpz-drop\.|rpz-tcp-only\.)$/; # Append the RPZ name my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; } else { # CNAME target check - IP addresses not allowed. Must be a more or less well-formed hostname. return ('FAIL', "CNAME records cannot point directly to an IP address") if ${$args{val}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; # Make sure target is a well-formed hostname return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); # Forcibly append the domain name if the hostname being added does not end with the current domain name my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $zname); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; # CNAMEs can not be used for parent nodes; just leaf nodes with no other record types # Enforce this for the zone name return ('FAIL', "The bare zone name may not be a CNAME") if ${$args{host}} eq $pname || ${$args{host}} =~ /^\@/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } # $zname !~ .rpz } # revzone eq 'n' return ('OK','OK'); } # done CNAME record # SOA record sub _validate_6 { # Smart monkeys won't stick their fingers in here; we have # separate dedicated routines to deal with SOA records. return ('OK','OK'); } # done SOA record # PTR record sub _validate_12 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $warnflag = ''; if ($args{defrec} eq 'y') { if ($args{revrec} eq 'y') { if (${$args{val}} =~ /^[\d.]+$/) { # v4 or bare number if (${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/) { # probable full IP. pointless but harmless. validate/normalize. my $tmp = NetAddr::IP->new(${$args{val}})->addr or return ('FAIL', "${$args{val}} is not a valid IP address"); ${$args{val}} = $tmp; $warnflag = "${$args{val}} will only be added to a small number of zones\n"; } elsif (${$args{val}} =~ /^\d+$/) { # bare number. This can be expanded to either a v4 or v6 zone ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/; } else { # $deity-only-knows what kind of gibberish we've been given. Only usable as a formal .arpa name. # Append ARPAZONE to be replaced with the formal .arpa zone name when converted to a live record. ${$args{val}} =~ s/\.*$/.ARPAZONE/ unless ${$args{val}} =~ /ARPAZONE$/; } } elsif (${$args{val}} =~ /^[a-fA-F0-9:]+$/) { # v6 or fragment; pray it's not complete gibberish ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/; } else { # $deity-only-knows what kind of gibberish we've been given. Only usable as a formal .arpa name. # Append ARPAZONE to be replaced with the formal .arpa zone name when converted to a live record. ${$args{val}} .= ".ARPAZONE" unless ${$args{val}} =~ /ARPAZONE$/; } } else { return ('FAIL', "PTR records are not supported in default record sets for forward zones (domains)"); } } else { if ($args{revrec} eq 'y') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); if (${$args{val}} =~ /\.arpa$/) { # Check that it's well-formed return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); # Check if it's a proper formal .arpa name for an IP, and renormalize it to the IP # value if so. I can't see why someone would voluntarily work with those instead of # the natural IP values but what the hey. my ($code,$tmp) = _zone2cidr(${$args{val}}); ${$args{val}} = $tmp->addr if $code ne 'FAIL'; } else { # not a formal .arpa name, so it should be an IP value. Validate... return ('FAIL', "${$args{val}} is not a valid IP value") unless ${$args{val}} =~ /^(?:\d+\.\d+\.\d+\.\d+|[a-fA-F0-9:]+)$/; $args{addr} = NetAddr::IP->new(${$args{val}}) or return ('FAIL', "IP/value looks like an IP address but isn't valid"); # ... and normalize. ${$args{val}} = $args{addr}->addr; } # Validate PTR target for form. # %blank% skips the IP when expanding a template record return ('FAIL', $errstr) unless _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) || lc(${$args{host}}) eq '%blank%'; } else { # revrec ne 'y' # Fetch the domain and append if the passed hostname isn't within it. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); # Validate hostname and target for form return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } } # Multiple PTR records do NOT generally do what most people believe they do, # and tend to fail in the most awkward way possible. Check and warn. my $chkbase = ${$args{val}};; my $hostcol = 'val'; # Reverse zone hostnames are stored "backwards" if ($args{revrec} eq 'n') { # PTRs in forward zones should be rare. $chkbase = ${$args{host}}; $hostcol = 'host'; } my @checkvals = ($chkbase); if ($chkbase =~ /,/) { # push . and :: variants into checkvals if $chkbase has , my $tmp; ($tmp = $chkbase) =~ s/,/./; push @checkvals, $tmp; ($tmp = $chkbase) =~ s/,/::/; push @checkvals, $tmp; } my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE $hostcol = ?"); foreach my $checkme (@checkvals) { if ($args{update}) { # $args{update} contains the ID of the record being updated. If the list of records that matches # the new hostname specification doesn't include this, the change effectively adds a new PTR that's # the same as one or more existing ones. my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}). " WHERE val = ?", undef, ($checkme)) }; $warnflag .= "PTR record for $checkme already exists; adding another will probably not do what you want" if @ptrs && (!grep /^$args{update}$/, @ptrs); } else { # New record. Always warn if a PTR exists # Don't warn when a matching A record exists tho my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}). " WHERE $hostcol = ? AND (type=12 OR type=65280 OR type=65281)", undef, ($checkme)); $warnflag .= "PTR record for $checkme already exists; adding another will probably not do what you want" if $ptrcount; } } return ('WARN',$warnflag) if $warnflag; return ('OK','OK'); } # done PTR record # MX record sub _validate_15 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # only for strict type restrictions # return ('FAIL', 'Reverse zones cannot contain MX records') if $args{revrec} eq 'y'; return ('FAIL', "Distance is required for MX records") unless defined(${$args{dist}}); ${$args{dist}} =~ s/\s*//g; return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/; ${$args{fields}} = "distance,"; push @{$args{vallist}}, ${$args{dist}}; if ($args{revrec} eq 'n') { # MX target check - IP addresses not allowed. Must be a more or less well-formed hostname. return ('FAIL', "MX records cannot point directly to an IP address") if ${$args{val}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } else { # MX target check - IP addresses not allowed. Must be a more or less well-formed hostname. return ('FAIL', "MX records cannot point directly to an IP address") if ${$args{host}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; # MX records in reverse zones get stricter treatment. The UI bars adding them in # reverse record sets, but we "need" to allow editing existing ones. And we'll allow # editing them if some loon manually munges one into a default reverse record set. if ($args{defrec} eq 'n') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); } ##enhance or ##fixme # convert well-formed .arpa names to IP addresses to match old "strict" validation design return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } return ('OK','OK'); } # done MX record # TXT record sub _validate_16 { my $self = shift; my %args = @_; if ($args{revrec} eq 'n') { # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } else { # We don't coerce reverse "hostnames" into the zone, mainly because we store most sane # records as IP values, not .arpa names. if ($args{defrec} eq 'n') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); } ##enhance or ##fixme # convert well-formed .arpa names to IP addresses to match old "strict" validation design return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; } # Could arguably put a WARN return here on very long (>512) records return ('OK','OK'); } # done TXT record # RP record sub _validate_17 { # Probably have to validate these separately some day. Call _validate_16() above since # they're otherwise very similar return _validate_16(@_); } # done RP record # AAAA record # Almost but not quite an exact duplicate of A record sub _validate_28 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # only for strict type restrictions # return ('FAIL', 'Reverse zones cannot contain AAAA records') if $args{revrec} eq 'y'; if ($args{revrec} eq 'y') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); # ${$args{val}} is either a valid IP or a string ending with the .arpa zone name; # now check if it's a well-formed FQDN return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; # Check IP is well-formed, and that it's a v4 address # Fail on "compact" IPv4 variants, because they are not consistent and predictable. return ('FAIL',"AAAA record must be a valid IPv6 address") unless ${$args{host}} =~ /^[a-fA-F0-9:]+$/; $args{addr} = new NetAddr::IP ${$args{host}}; return ('FAIL',"AAAA record must be a valid IPv6 address") unless $args{addr} && $args{addr}->{isv6}; # coerce IP/value to normalized form for storage ${$args{host}} = $args{addr}->addr; # I'm just going to ignore the utterly barmy idea of an AAAA record in the *default* # records for a reverse zone; it's bad enough to find one in funky legacy data. } else { # revrec ne 'y' # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); # Check if it's a proper formal .arpa name for an IP, and renormalize it to the IP # value if so. Done mainly for symmetry with PTR/AAAA+PTR, and saves a conversion on export. if (${$args{val}} =~ /\.arpa$/) { my ($code,$tmp) = _zone2cidr(${$args{val}}); if ($code ne 'FAIL') { ${$args{val}} = $tmp->addr; $args{addr} = $tmp; } } # Check IP is well-formed, and that it's a v6 address return ('FAIL',"AAAA record must be a valid IPv6 address") unless ${$args{val}} =~ /^[a-fA-F0-9:]+$/; $args{addr} = new NetAddr::IP ${$args{val}}; return ('FAIL',"AAAA record must be a valid IPv6 address") unless $args{addr} && $args{addr}->{isv6}; # coerce IP/value to normalized form for storage ${$args{val}} = $args{addr}->addr; } return ('OK','OK'); } # done AAAA record # SRV record sub _validate_33 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Not absolutely true but WTF use is an SRV record for a reverse zone? # return ('FAIL', 'Reverse zones cannot contain SRV records') if $args{revrec} eq 'y'; # Key additional record parts. Always required. return ('FAIL',"Distance, port and weight are required for SRV records") unless defined(${$args{weight}}) && defined(${$args{port}}) && defined(${$args{dist}}); ${$args{dist}} =~ s/\s*//g; ${$args{weight}} =~ s/\s*//g; ${$args{port}} =~ s/\s*//g; my @ferr; push @ferr, "distance" unless ${$args{dist}} =~ /^\d+$/; push @ferr, "weight" unless ${$args{weight}} =~ /^\d+$/; push @ferr, "port" unless ${$args{port}} =~ /^\d+$/; return ('FAIL',"Distance, port and weight are required, and must be numeric (check ".join(", ", @ferr).")") unless ${$args{dist}} =~ /^\d+$/ && ${$args{weight}} =~ /^\d+$/ && ${$args{port}} =~ /^\d+$/; ${$args{fields}} = "distance,weight,port,"; push @{$args{vallist}}, (${$args{dist}}, ${$args{weight}}, ${$args{port}}); if ($args{revrec} eq 'n') { # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; ##enhance: Rejig so that we can pass back a WARN red flag, instead of # hard-failing, since it seems that purely from the DNS record perspective, # SRV records without underscores are syntactically valid # Not strictly true, but SRV records not following this convention won't be found. return ('FAIL',"SRV records must begin with _service._protocol [${$args{host}}]") unless ${$args{host}} =~ /^_[A-Za-z\d-]+\._[A-Za-z]+\.[a-zA-Z0-9-]+/; # SRV target check - IP addresses not allowed. Must be a more or less well-formed hostname. # Allow a bare . to indicate "this service does not exist" return ('FAIL', "SRV records cannot point directly to an IP address") if ${$args{val}} ne '.' && ${$args{val}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; } else { # hm. we can't do anything sane with IP values here; part of the record data is in # fact encoded in the "hostname". enforce .arpa names? OTOH, SRV records in a reverse # zone are pretty silly. ##enhance: Rejig so that we can pass back a WARN red flag, instead of # hard-failing, since it seems that purely from the DNS record perspective, # SRV records without underscores are syntactically valid # Not strictly true, but SRV records not following this convention won't be found. return ('FAIL',"SRV records must begin with _service._protocol [${$args{host}}]") unless ${$args{val}} =~ /^_[A-Za-z\d-]+\._[A-Za-z]+\.[a-zA-Z0-9-]+/; # SRV target check - IP addresses not allowed. Must be a more or less well-formed hostname. # Allow a bare . to indicate "this service does not exist" return ('FAIL', "SRV records cannot point directly to an IP address") if ${$args{host}} ne '.' && ${$args{host}} =~ /^(?:[\d.]+|[0-9a-fA-F:]+)$/; # SRV records in reverse zones get stricter treatment. The UI bars adding them in # reverse record sets, but we "need" to allow editing existing ones. And we'll allow # editing them if some loon manually munges one into a default reverse record set. if ($args{defrec} eq 'n') { # Get the revzone, so we can see if ${$args{val}} is in that zone my $revzone = new NetAddr::IP $self->revName($args{id}, 'y'); return ('FAIL', $errstr) if !$self->_inrev($args{val}, $revzone); } ##enhance or ##fixme # convert well-formed .arpa names to IP addresses to match old "strict" validation design return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}) && ${$args{val}} =~ /\.arpa$/; ##enhance: Look up the passed value to see if it exists. Ooo, fancy. return ('FAIL', $errstr) if ! _check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); } return ('OK','OK'); } # done SRV record # CAA record sub _validate_257 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $code = 'OK'; my $msg = ''; # Default to no message, because there are a lot of handwavy warning cases. if ($args{revrec} eq 'n') { # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; my ($caaflag, $caatag, $caadetail) = (${$args{val}} =~ /(\d+)\s+(\w+)\s+(.+)/); return ('FAIL', "Poorly formed CAA record missing one or more of flag, tag, or detail") if (!defined($caaflag) || !defined($caatag) || !defined($caadetail)); # flag is a bitfield, only bit 0 currently has meaning as "Issuer Critical" # Not 100% clear if this flag is permitted on known tags, or if it's # semantically null since the known tags are already defined. We'll allow it. return ('FAIL', "CAA flags other than 0 or 128 not currently supported in DNS") if $caaflag ne '0' && $caaflag ne '128'; # known tags: # issue # issuewild # iodef (RFC5070) # auth (reserved, do not use) # path (reserved, do not use) # policy (reserved, do not use) return ('FAIL', "CAA tags may only use a-z, A-Z, and 0-9") if $caatag !~ /^[a-zA-Z0-9]+$/; return ('FAIL', "Can't use reserved CAA tag '$caatag'") if $caatag =~ /^(?:auth|path|policy)$/; if ($caatag !~ /^(?:issue|issuewild|iodef)$/) { $code = 'WARN'; $msg = ($msg ? $msg." " : '')."Unknown CAA tag '$caatag' will be published as-is."; } if (length($caatag) > 15) { $code = 'WARN'; $msg = ($msg ? $msg." " : '').'Custom CAA tag > 15 characters may not behave as intended.'; } if ($caatag eq 'issue' || $caatag eq 'issuewild') { # Detail format is possibly as complex as: # [;|cert-authority [; key=value[ key=value ...]] # but arguably a strict reading says there can only be one key, and the # rest of the string after first = is the value, even if it appears to # contain extra key=value pairs. # See https://datatracker.ietf.org/doc/html/rfc6844 for full ABNF definition. # Either way all we need to validate is that it's within the specified characters. if ($caadetail eq ';') { # No certs permitted } else { my ($certauth,$remainder) = ($caadetail =~ /^\s*([a-zA-Z0-9.-]+)\s*((?:;|\s|$).*)?$/); if (!$certauth) { # We can't reasonably validate individual domains, just that it's well-formed return ('FAIL', "CAA authority domain must be a valid domain name"); } if ($remainder) { return ('FAIL', "CAA authority domain and optional key=value entry or entries must be separated by a ';'") if $remainder !~ /^\s*;/; $remainder =~ s/\s*;\s*//; # Just validate the characters in the remainder. Any details are CA-specific and not sanely validateable. return ('FAIL', "Invalid characters in optional key=value entry or entries") if $remainder !~ /^[a-zA-Z0-9]+\s*=[\x21-\x7e\s]+$/; } } } # issue/isseuewild elsif ($caatag eq 'iodef') { # Two valid forms: # mailto:address@example.com # http://iodef.example.com/ # RFC seems a little handwavy whether https:// is valid or not, but the chained # RFC for the HTTP-based reporting protocol says that this should be assumed to # be a dedicated port (4590) and service, requiring TLS. Allowing https:// per # the detail description in https://datatracker.ietf.org/doc/html/rfc6844#section-5.4. return ('FAIL', "iodef tag data must reference a mailto: or http: URI") if $caadetail !~ /^(mailto|https?):/; if ($1 eq 'mailto') { # not going full RFC on validating form, just "reasonably sane" return ('FAIL', "Poorly formed email for iodef tag") if $caadetail !~ /^mailto:[^\s]+\@[a-zA-z0-9._-]+$/ } else { return ('FAIL', "Poorly formed URI for iodef tag") if $caadetail !~ m,^https?://[a-zA-z0-9._-]+/?$, } } # iodef } else { # CAA records don't make much sense in reverse zones return ('FAIL', "CAA records not supported in reverse zones"); } # Allow CAA records in default record sets for now, but it's a bit iffy # whether this makes any sense. Not nice to publish a default "issue ;" # record, then go through a support mess trying to figure out why a # customer can't register a cert somewhere. # if ($args{defrec} eq 'n') { # } else { # } return ($code, $msg); } # done CAA record # Now the custom types # A+PTR record. With a very little bit of magic we can also use this sub to validate AAAA+PTR. Whee! sub _validate_65280 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $code = 'OK'; my $msg = 'OK'; if ($args{defrec} eq 'n') { # live record; revrec determines whether we validate the PTR or A component first. # Fail early on non-IP gibberish in ${$args{val}}. Arguably .arpa names might be acceptable # but that gets stupid in forward zones, since these records are shared. return ('FAIL', "$typemap{${$args{rectype}}} record must be a valid IPv4 address") if ${$args{rectype}} == 65280 && ${$args{val}} !~ m{^\d+\.\d+\.\d+\.\d+(?:/\d+)?$}; return ('FAIL', "$typemap{${$args{rectype}}} record must be a valid IPv6 address") if ${$args{rectype}} == 65281 && ${$args{val}} !~ m{^[a-fA-F0-9:]+(?:/\d+)?$}; # If things are not OK, this should prevent Stupid in the error log. $args{addr} = new NetAddr::IP ${$args{val}} or return ('FAIL', "$typemap{${$args{rectype}}} record must be a valid IPv". (${$args{rectype}} == 65280 ? '4' : '6')." address"); ${$args{val}} = $args{addr}->addr; if ($args{revrec} eq 'y') { ($code,$msg) = $self->_validate_12(%args); return ($code,$msg) if $code eq 'FAIL'; # check A+PTR is really v4 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address") if ${$args{rectype}} == 65280 && $args{addr}->{isv6}; # check AAAA+PTR is really v6 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address") if ${$args{rectype}} == 65281 && !$args{addr}->{isv6}; # Check if the reqested domain exists. If not, coerce the type down to PTR and warn. if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) { my $addmsg = "Record ".($args{update} ? 'updated' : 'added'). " as PTR instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}"; $msg .= "\n$addmsg" if $code eq 'WARN'; $msg = $addmsg if $code eq 'OK'; ${$args{rectype}} = $reverse_typemap{PTR}; return ('WARN', $msg); } # Add domain ID to field list and values ${$args{fields}} .= "domain_id,"; push @{$args{vallist}}, ${$args{domid}}; } else { ($code,$msg) = $self->_validate_1(%args) if ${$args{rectype}} == 65280; ($code,$msg) = $self->_validate_28(%args) if ${$args{rectype}} == 65281; return ($code,$msg) if $code eq 'FAIL'; # Check if the requested reverse zone exists - note, an IP fragment won't # work here since we don't *know* which parent to put it in. # ${$args{val}} has been validated as a valid IP by now, in one of the above calls. my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?". " ORDER BY masklen(revnet) DESC", undef, (${$args{val}})); if (!$revid) { $msg = "Record ".($args{update} ? 'updated' : 'added')." as ".(${$args{rectype}} == 65280 ? 'A' : 'AAAA'). " instead of $typemap{${$args{rectype}}}; reverse zone not found for ${$args{val}}"; ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA}); return ('WARN', $msg); } # Check for duplicate PTRs. Note we don't have to play games with $code and $msg, because # by definition there can't be duplicate PTRs if the reverse zone isn't managed here. if ($args{update}) { # Record update. There should usually be an existing PTR (the record being updated) my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}). " WHERE val = ?", undef, (${$args{val}})) }; if (@ptrs && (!grep /^$args{update}$/, @ptrs)) { $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want"; $code = 'WARN'; } } else { # New record. Always warn if a PTR exists my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}). " WHERE val = ?", undef, (${$args{val}})); $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want" if $ptrcount; $code = 'WARN' if $ptrcount; } # Add the reverse zone ID to the fieldlist ${$args{fields}} .= "rdns_id,"; push @{$args{vallist}}, $revid; # Coerce the hostname back to the domain; this is so it displays and manipulates # sanely in the reverse zone. if (${$args{host}} eq '@') { ${$args{host}} = $self->domainName($args{id}); # errors? What errors? } } # revrec ne 'y' } else { # defrec eq 'y' if ($args{revrec} eq 'y') { ($code,$msg) = $self->_validate_12(%args); return ($code,$msg) if $code eq 'FAIL'; if (${$args{rectype}} == 65280) { return ('FAIL',"A+PTR record must be a valid IPv4 address or fragment") if ${$args{val}} =~ /:/; ${$args{val}} =~ s/^ZONE,/ZONE./; # Clean up after uncertain IP-fragment-type from _validate_12 } elsif (${$args{rectype}} == 65281) { return ('FAIL',"AAAA+PTR record must be a valid IPv6 address or fragment") if ${$args{val}} =~ /\./; ${$args{val}} =~ s/^ZONE,/ZONE::/; # Clean up after uncertain IP-fragment-type from _validate_12 } } else { # This is easy. I also can't see a real use-case for A/AAAA+PTR in *all* forward # domains, since you wouldn't be able to substitute both domain and reverse zone # sanely, and you'd end up with guaranteed over-replicated PTR records that would # confuse the hell out of pretty much anything that uses them. ##fixme: make this a config flag? return ('FAIL', "$typemap{${$args{rectype}}} records not allowed in default domains"); } } return ($code, $msg); } # done A+PTR record # AAAA+PTR record # A+PTR above has been magicked to handle AAAA+PTR as well. sub _validate_65281 { return _validate_65280(@_); } # done AAAA+PTR record # PTR template record sub _validate_65282 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # we're *this* >.< close to being able to just call _validate_12... unfortunately we can't, quite. if ($args{revrec} eq 'y') { if ($args{defrec} eq 'n') { return ('FAIL', "Template block ${$args{val}} is not within ".$self->revName($args{id})) unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr}); ##fixme: warn if $args{val} is not /31 or larger block? ${$args{val}} = "$args{addr}"; } else { if (${$args{val}} =~ /\./) { # looks like a v4 or fragment if (${$args{val}} =~ m|^\d+\.\d+\.\d+\.\d+(?:/\d+)?$|) { # woo! a complete IP! validate it and normalize, or fail. $args{addr} = NetAddr::IP->new(${$args{val}}) or return ('FAIL', "IP/value looks like IPv4 but isn't valid"); ${$args{val}} = "$args{addr}"; } else { ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/; } } elsif (${$args{val}} =~ /[a-f:]/) { # looks like a v6 or fragment ${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/; if ($args{addr}) { if ($args{addr}->addr =~ /^0/) { ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/; } else { ${$args{val}} = "$args{addr}"; } } } else { # bare number (probably). These could be v4 or v6, so we'll # expand on these on creation of a reverse zone. ${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/; } } ##fixme: validate %-patterns? # Unlike single PTR records, there is absolutely no way to sanely support multiple # PTR templates for the same block, since they expect to expand to all the individual # IPs on export. Nested templates should be supported though. my @checkvals = (${$args{val}}); if (${$args{val}} =~ /,/) { # push . and :: variants into checkvals if val has , my $tmp; ($tmp = ${$args{val}}) =~ s/,/./; push @checkvals, $tmp; ($tmp = ${$args{val}}) =~ s/,/::/; push @checkvals, $tmp; } ##fixme: this feels wrong still - need to restrict template pseudorecords to One Of Each # Per Netblock such that they don't conflict on export my $typeck; # type 65282 -> ptr template -> look for any of 65282, 65283, 65284 $typeck = 'type=65283 OR type=65284' if ${$args{rectype}} == 65282; # type 65283 -> a+ptr template -> v4 -> look for 65282 or 65283 $typeck = 'type=65283' if ${$args{rectype}} == 65282; # type 65284 -> aaaa+ptr template -> v6 -> look for 65282 or 65284 $typeck = 'type=65284' if ${$args{rectype}} == 65282; my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ? ". "AND (type=65282 OR $typeck)"); foreach my $checkme (@checkvals) { $pcsth->execute($checkme); my ($rc) = $pcsth->fetchrow_array; return ('FAIL', "Only one template pseudorecord may exist for a given IP block") if $rc > 1; } } else { return ('FAIL', "Forward zones cannot contain PTR records"); } return ('OK','OK'); } # done PTR template record # A+PTR template record sub _validate_65283 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my ($code,$msg) = ('OK','OK'); ##fixme: need to fiddle things since A+PTR templates are acceptable in live # forward zones but not default records if ($args{defrec} eq 'n') { if ($args{revrec} eq 'n') { # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = $self->domainName($args{id}); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; # check for form; note this checks both normal and "other" hostnames. return ('FAIL', $errstr) if !_check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); # Check if the requested reverse zone exists - note, an IP fragment won't # work here since we don't *know* which parent to put it in. # ${$args{val}} has been validated as a valid IP by now, in one of the above calls. my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >>= ?". " ORDER BY masklen(revnet) DESC", undef, (${$args{val}})); # Fail if no match; we can't coerce a PTR-template type down to not include the PTR bit currently. if (!$revid) { $msg = "Can't ".($args{update} ? 'update' : 'add')." ${$args{host}}/${$args{val}} as ". "$typemap{${$args{rectype}}}: reverse zone not found for ${$args{val}}"; ##fixme: add A template, AAAA template types? # ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA}); return ('FAIL', $msg); } # Add reverse zone ID to field list and values ${$args{fields}} .= "rdns_id,"; push @{$args{vallist}}, $revid; } else { return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".$self->revName($args{id})) unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr}); ${$args{val}} = "$args{addr}"; if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) { my $addmsg = "Record ".($args{update} ? 'updated' : 'added'). " as PTR template instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}"; $msg .= "\n$addmsg" if $code eq 'WARN'; $msg = $addmsg if $code eq 'OK'; ${$args{rectype}} = 65282; return ('WARN', $msg); } # Add domain ID to field list and values ${$args{fields}} .= "domain_id,"; push @{$args{vallist}}, ${$args{domid}}; } } else { my ($code,$msg) = $self->_validate_65282(%args); return ($code, $msg) if $code eq 'FAIL'; # get domain, check against ${$args{name}} } return ('OK','OK'); } # done A+PTR template record # AAAA+PTR template record # Not sure this can be handled sanely due to the size of IPv6 address space # _validate_65283 above should handle v6 template records fine. It's on export we've got trouble. sub _validate_65284 { my $self = shift; my %args = @_; # do a quick check on the form of the hostname part; this is effectively a # "*.0.0.f.ip6.arpa" hostname, not an actual expandable IP template pattern # like with 65283. return ('FAIL', $errstr) if !_check_hostname_form(${$args{host}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); return $self->_validate_65283(%args); } # done AAAA+PTR template record # Delegation record # This is essentially a specialized clone of the NS record, primarily useful # for delegating IPv4 sub-/24 reverse blocks sub _validate_65285 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Almost, but not quite, identical to NS record validation. # Check that the target of the record is within the parent. # Yes, host<->val are mixed up here; can't see a way to avoid it. :( if ($args{defrec} eq 'n') { # Check if IP/address/zone/"subzone" is within the parent if ($args{revrec} eq 'y') { my $tmpip = NetAddr::IP->new(${$args{val}}); my $pname = $self->revName($args{id}); return ('FAIL',"${$args{val}} not within $pname") unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$tmpip); # Normalize ${$args{val}} = "$tmpip"; } else { my $pname = $self->domainName($args{id}); ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/i; } } else { return ('FAIL',"Delegation records are not permitted in default record sets"); } return ('OK','OK'); } # done delegation record # ALIAS record # A specialized variant of the CNAME, which retrieves the A record list on each # export and publishes the A records instead. Primarily for "root CNAME" or "apex # alias" records. See https://secure.deepnet.cx/trac/dnsadmin/ticket/55. # Not allowed in reverse zones because this is already a hack, and reverse zones # don't get pointed to CNAMEed CDNs the way domains do. sub _validate_65300 { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; return ('FAIL',"ALIAS records are not permitted in reverse zones") if $args{revrec} eq 'y'; # Make sure target is a well-formed hostname return ('FAIL', $errstr) if ! _check_hostname_form(${$args{val}}, ${$args{rectype}}, $args{defrec}, $args{revrec}); # Coerce all hostnames to end in ".DOMAIN" for group/default records, # or the intended parent domain for live records. my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id})); ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/i); # Only do the cache thing on live/active records return ('OK','OK') unless $args{defrec} eq 'n'; # now we check/update the cached target address info my ($iplist) = $self->{dbh}->selectrow_array("SELECT auxdata FROM records WHERE record_id = ?", undef, $args{recid}); my $warnmsg; $iplist = '' if !$iplist; # shared target-name-to-IP converter my $liveips = $self->_grab_65300($args{recid}, ${$args{val}}); $liveips = '' if !$liveips; # check to see if there was an OOOOPS checking for updated A records on the target. also make sure we have something cached. if (!$liveips) { if (!$iplist) { # not fatal since we do the lookup on export as well $warnmsg = "No cached data and no live DNS data for ALIAS target ${$args{val}}; record may be SKIPPED on export!"; } } # munge the insert/update fieldlist and data array # note we always force this; if the target has changed the cached data is almost certainly invalid anyway if ($liveips && ($iplist ne $liveips)) { ${$args{fields}} .= "auxdata,"; push @{$args{vallist}}, $liveips; } return ('WARN', join("\n", $errstr, $warnmsg) ) if $warnmsg; return ('OK','OK'); } # done ALIAS record # this segment used multiple places to update ALIAS target details sub _grab_65300 { my $self = shift; my $dbh = $self->{dbh}; my $recid = shift; my $target = shift; my $res = Net::DNS::Resolver->new; $res->tcp_timeout(2); $res->udp_timeout(2); # send() returns a Net::DNS::Packet which may or may not be entirely empty, we'll see in the loop below my $arecs = $res->send($target, 'A'); my $aaaarecs = $res->send($target,'AAAA'); my $liveips = ''; # default to a one-hour TTL, which should be variously modified down the chain. Arguably this could # default even lower, since "The Cloud" often uses sub-1-minute TTLs on the final A records. my $minttl = 3600; my @newlist; foreach my $rr ($arecs->answer, $aaaarecs->answer) { next unless $rr->type eq "A" || $rr->type eq "AAAA"; push @newlist, $rr->address; $minttl = $rr->ttl if $rr->ttl < $minttl; } if (@newlist) { # safety limit. could arguably take this lower, or for extra # complexity, reference off the zone SOA minTTL $minttl = 60 if $minttl < 60; # we don't need this to be perfectly correct IP address order, just consistent. $liveips = "$minttl;".join(';', sort(@newlist)) if @newlist; #fixme: should it be a formal error case if there are no A/AAAA records returned? } else { $errstr = "Lookup failure retrieving ALIAS IP list: ".$res->errorstring; } return $liveips; } # _grab_65300() # Subs not specific to a particular record type # Convert $$host and/or $$val to lowercase as appropriate. # Should only be called if $self->{lowercase} is true. # $rectype is also a reference for caller convenience sub _caseclean { my ($rectype, $host, $val, $defrec, $revrec) = @_; # Can't case-squash default records, due to DOMAIN, ZONE, and ADMINDOMAIN templating return if $defrec eq 'y'; if ($typemap{$$rectype} eq 'TXT' || $typemap{$$rectype} eq 'SPF') { # TXT records should preserve user entry in the string. # SPF records are a duplicate of TXT with a new record type value (99) $$host = lc($$host) if $revrec eq 'n'; # only lowercase $$host on live forward TXT; preserve TXT content $$val = lc($$val) if $revrec eq 'y'; # only lowercase $$val on live reverse TXT; preserve TXT content } else { # Non-TXT, live records, are fully case-insensitive $$host = lc($$host); $$val = lc($$val); } # $typemap{$$rectype} else } # _caseclean() ## ## Record data substitution subs ## # Replace ZONE in hostname, or create (most of) the actual proper zone name sub _ZONE { my $zone = shift; my $string = shift; my $fr = shift || 'f'; # flag for forward/reverse order? nb: ignored for IP my $sep = shift || '-'; # Separator character - unlikely we'll ever need more than . or - my $prefix; $string =~ s/,/./ if !$zone->{isv6}; $string =~ s/,/::/ if $zone->{isv6}; # Subbing ZONE in the host. We need to properly ID the netblock range # The subbed text should have "network IP with trailing zeros stripped" for # blocks lined up on octet (for v4) or hex-quad (for v6) boundaries # For blocks that do NOT line up on these boundaries, we take the most # significant octet or 16-bit chunk of the "broadcast" IP and append it # after a double-dash # ie: # 8.0.0.0/6 -> 8.0.0.0 -> 11.255.255.255; sub should be 8--11 # 10.0.0.0/12 -> 10.0.0.0 -> 10.0.0.0 -> 10.15.255.255; sub should be 10-0--15 # 192.168.4.0/22 -> 192.168.4.0 -> 192.168.7.255; sub should be 192-168-4--7 # 192.168.0.8/29 -> 192.168.0.8 -> 192.168.0.15; sub should be 192-168-0-8--15 # Similar for v6 if (!$zone->{isv6}) { # IPv4 $prefix = $zone->network->addr; # Just In Case someone managed to slip in # a funky subnet that had host bits set. my $bc = $zone->broadcast->addr; if ($zone->masklen > 24) { $bc =~ s/^\d+\.\d+\.\d+\.//; } elsif ($zone->masklen > 16) { $prefix =~ s/\.0$//; $bc =~ s/^\d+\.\d+\.//; } elsif ($zone->masklen > 8) { $bc =~ s/^\d+\.//; $prefix =~ s/\.0\.0$//; } else { $prefix =~ s/\.0\.0\.0$//; } if ($zone->masklen % 8) { $bc =~ s/(\.255)+$//; $prefix .= "--$bc"; #"--".zone->masklen; # use range or mask length? } if ($fr eq 'f') { $prefix =~ s/\.+/$sep/g; } else { $prefix = join($sep, reverse(split(/\./, $prefix))); } } else { # IPv6 if ($fr eq 'f') { $prefix = $zone->network->addr; # Just In Case someone managed to slip in # a funky subnet that had host bits set. my $bc = $zone->broadcast->addr; if (($zone->masklen % 16) != 0) { # Strip trailing :0 off $prefix, and :ffff off the broadcast IP for (my $i=0; $i<(7-int($zone->masklen / 16)); $i++) { $prefix =~ s/:0$//; $bc =~ s/:ffff$//; } # Strip the leading 16-bit chunks off the front of the broadcast IP $bc =~ s/^([a-f0-9]+:)+//; # Append the remaining 16-bit chunk to the prefix after "--" $prefix .= "--$bc"; } else { # Strip off :0 from the end until we reach the netblock length. for (my $i=0; $i<(8-$zone->masklen / 16); $i++) { $prefix =~ s/:0$//; } } # Actually deal with the separator $prefix =~ s/:/$sep/g; } else { # $fr eq 'f' $prefix = $zone->network->full; # Just In Case someone managed to slip in # a funky subnet that had host bits set. my $bc = $zone->broadcast->full; $prefix =~ s/://g; # clean these out since they're not spaced right for this case $bc =~ s/://g; # Strip trailing 0 off $prefix, and f off the broadcast IP, to match the mask length for (my $i=0; $i<(31-int($zone->masklen / 4)); $i++) { $prefix =~ s/0$//; $bc =~ s/f$//; } # Split and reverse the order of the nibbles in the network/broadcast IPs # trim another 0 for nibble-aligned blocks first, but only if we really have a block, not an IP $prefix =~ s/0$// if $zone->masklen % 4 == 0 && $zone->masklen != 128; my @nbits = reverse split //, $prefix; my @bbits = reverse split //, $bc; # Handle the sub-nibble case. Eww. I feel dirty supporting this... $nbits[0] = "$nbits[0]-$bbits[0]" if ($zone->masklen % 4) != 0; # Glue it back together $prefix = join($sep, @nbits); } # $fr ne 'f' } # $zone->{isv6} # Do the substitution, finally $string =~ s/ZONE/$prefix/; $string =~ s/--/-/ if $sep ne '-'; # - as separator needs extra help for sub-octet v4 netblocks return $string; } # done _ZONE() # Not quite a substitution sub, but placed here as it's basically the inverse of above; # given the .arpa zone name, return the CIDR netblock the zone is for. # Supports v4 non-octet/non-classful netblocks as per the method outlined in the Grasshopper Book (2nd Ed p217-218) # Does NOT support non-quad v6 netblocks via the same scheme; it shouldn't ever be necessary. # Takes a nominal .arpa zone name, returns a success code and NetAddr::IP, or a fail code and message sub _zone2cidr { my $zone = shift; my $cidr; my $tmpcidr; my $warnmsg = ''; if ($zone =~ /\.in-addr\.arpa\.?$/) { # v4 revzone, formal zone name type my $tmpzone = $zone; return ('FAIL', "Non-numerics in apparent IPv4 reverse zone name [$tmpzone]") if $tmpzone !~ m{^(?:\d+[/-])?[\d\.]+\.in-addr\.arpa\.?$}; $tmpzone =~ s/\.in-addr\.arpa\.?//; # Snag the octet pieces my @octs = split /\./, $tmpzone; # Map result of a range manipulation to a mask length change. Cheaper than finding the 2-root of $octets[0]+1. # Note we will not support /31 blocks, mostly due to issues telling "24-31" -> .24/29 apart from # "24-31" -> .24/31", with a litte bit of "/31 is icky". my %maskmap = ( 3 => 2, 7 => 3, 15 => 4, 31 => 5, 63 => 6, 127 => 7, 30 => 2, 29 => 3, 28 => 4, 27 => 5, 26 => 6, 25 => 7 ); # Handle "range" blocks, eg, 80-83.168.192.in-addr.arpa (192.168.80.0/22) # Need to take the size of the range to offset the basic octet-based mask length, # and make sure the first number in the range gets used as the network address for the block # Alternate form: The second number is actually the real netmask, not the end of the range. my $masklen = 0; if ($octs[0] =~ m{^((\d+)[/-](\d+))$}) { # take the range... if (24 < $3 && $3 < 31) { # we have a real netmask $masklen = -$maskmap{$3}; } else { # we have a range. NB: only real CIDR ranges are supported $masklen -= $maskmap{-(eval $1)}; # find the mask base... } $octs[0] = $2; # set the base octet of the range... } @octs = reverse @octs; # We can reverse the octet pieces now that we've extracted and munged any ranges # arguably we should only allow sub-octet range/mask in-addr.arpa # specifications in the least significant octet, but the code is # simpler if we deal with sub-octet delegations at any level. # Now we find the "true" mask with the aid of the "base" calculated above if ($#octs == 0) { $masklen += 8; $tmpcidr = "$octs[0].0.0.0/$masklen"; # really hope we don't see one of these very often. } elsif ($#octs == 1) { $masklen += 16; $tmpcidr = "$octs[0].$octs[1].0.0/$masklen"; } elsif ($#octs == 2) { $masklen += 24; $tmpcidr = "$octs[0].$octs[1].$octs[2].0/$masklen"; } else { $masklen += 32; $tmpcidr = "$octs[0].$octs[1].$octs[2].$octs[3]/$masklen"; } } elsif ($zone =~ /\.ip6\.arpa\.?$/) { # v6 revzone, formal zone name type my $tmpzone = $zone; ##fixme: if-n-when we decide we can support sub-nibble v6 zone names, we'll need to change this segment return ('FAIL', "Non-hexadecimals in apparent IPv6 reverse zone name [$tmpzone]") if $tmpzone !~ /^[a-fA-F\d\.]+\.ip6\.arpa\.?$/; $tmpzone =~ s/\.ip6\.arpa\.?//; my @quads = reverse(split(/\./, $tmpzone)); $warnmsg .= "Apparent sub-/64 IPv6 reverse zone\n" if $#quads > 15; my $nc; foreach (@quads) { $tmpcidr .= $_; $tmpcidr .= ":" if ++$nc % 4 == 0 && $nc < $#quads; } my $nq = 1 if $nc % 4 != 0; my $mask = $nc * 4; # need to do this here because we probably increment it below while ($nc++ % 4 != 0) { $tmpcidr .= "0"; } # polish it off with trailing ::/mask if this is a CIDR block instead of an IP $tmpcidr .= "::/$mask" if $mask != 128; } # Just to be sure, use NetAddr::IP to validate. Saves a lot of nasty regex watching for valid octet values. return ('FAIL', "Invalid zone $zone (apparent netblock $tmpcidr)") unless $cidr = NetAddr::IP->new($tmpcidr); if ($warnmsg) { $errstr = $warnmsg; return ('WARN', $cidr); } return ('OK', $cidr); ##fixme: use wantarray() to decide what to return? } # done _zone2cidr() # Record template %-parameter expansion, IPv4. Note that IPv6 doesn't # really have a sane way to handle this type of expansion at the moment # due to the size of the address space. # Takes a reference to a template string to be expanded, an IP to use in the replacement, # an optional netblock for the %ngb (net, gw, bcast) expansion, and an optional index # number for %c "n'th usable IP in block/range" patterns. # Alters the template string referred. sub _template4_expand { # ugh pthui my $self; $self = shift if ref($_[0]) eq 'DNSDB'; my $tmpl = shift; my $ip = shift; my $subnet = shift; # %ngb, %c, and %x my $ipindex = shift; # for %c # blank $tmpl on config template_skip_0 or template_skip_255, unless we have a %ngb if ($$tmpl !~ /\%-?n-?g-?b\%/) { if ( ($ip =~ /\.0$/ && $self->{template_skip_0}) || ($ip =~ /\.255$/ && $self->{template_skip_255}) ) { $$tmpl = ''; return; } } my @ipparts = split /\./, $ip; my @iphex; my @ippad; for (@ipparts) { push @iphex, sprintf("%x", $_); push @ippad, sprintf("%0.3u", $_); } # Two or three consecutive separator characters (_ or -) should be rare - users that use them # anywhere other than punycoded internationalized domains get to keep the pieces when it breaks. # We clean up the ones that we may inadvertently generate after replacing %c and %ngb% my ($thrsep) = ($$tmpl =~ /[_-]{3}/); my ($twosep) = ($$tmpl =~ /[_-]{2}/); # Take the simplest path to pattern substitution; replace only exactly the %c or %ngb% # patterns as-is. Then check after to see if we've caused doubled separator characters (- or _) # and eliminate them, but only if the original template didn't have them already. Also # unconditionally drop separator characters immediately before a dot; these do not always # strictly make the label invalid but almost always, and any exceptions should never show up # in a template record that expands to "many" real records anyway. # %ngb and %c require a netblock if ($subnet) { # extract the fragments my ($ngb,$n,$g,$b) = ($$tmpl =~ /(\%(-?n)(-?g)(-?b)\%)/); my ($c) = ($$tmpl =~ /(\%-?c)/); my $nld = ''; my $cld = ''; $c = '' if !$c; my ($cn) = ($$tmpl =~ /(\%x)/); my $skipgw = ($c =~ /\%-c/ ? 0 : 1); my $ipkill = 0; if ($cn) { # "n'th natural IP in the block" pattern. my $iptmp = new NetAddr::IP $ip; my $natdex = scalar($iptmp - $$subnet); $natdex++; $$tmpl =~ s/$cn/$natdex/; } ##fixme: still have one edge case not handled well: # %c%n-gb% # do we drop the record as per -g, or publish the record with an index of 1 as per %c? # arguably this is a "that's a STUPID question!" case if ($c) { # "n'th usable IP in the block" pattern. We need the caller to provide an index # number otherwise we see exponential time growth because we have to iterate over # the whole block to map the IP back to an index. :/ # NetAddr::IP does not have a method for asking "what index is IP at?" # no index, or index == 0, (AKA network address), or IP == broadcast, blank the index fragment if (!$ipindex || ($$subnet->broadcast->addr eq $ip)) { $$tmpl =~ s/$c//; } else { # if we have %c, AKA "skip the gateway", and we're on the nominal gateway IP, blank the index fragment if ($skipgw && $$subnet->first->addr eq $ip) { $$tmpl =~ s/$c//; } # else replace the index fragment with the passed index minus $skipgw, so that we can start the # resulting index at 1 on net+2 else { $$tmpl =~ s/$c/($ipindex-$skipgw)/e; } } } # if ($c) if ($ngb) { # individually check the network, standard gateway (net+1) IP, and broadcast IP # blank $$tmpl if n, g, or b was prefixed with - (this allows "hiding" net/gw/bcast entries) if ($$subnet->network->addr eq $ip) { if ($n eq '-n') { $$tmpl = ''; } else { $$tmpl =~ s/$ngb/net/; $ipkill = 1; } } elsif ($$subnet->first->addr eq $ip) { if ($g eq '-g') { $$tmpl = ''; } else { $$tmpl =~ s/$ngb/gw/; $ipkill = 1; } } elsif ($$subnet->broadcast->addr eq $ip) { if ($b eq '-b') { $$tmpl = ''; } else { $$tmpl =~ s/$ngb/bcast/; $ipkill = 1; } } else { $$tmpl =~ s/$ngb//; } } # We don't (usually) want to expand the IP-related patterns on the -net, -gw, or -bcast IPs. # Arguably this is another place for another config knob, or possibly further extension of # the template pattern to control it on a per-subnet basis. if ($ipkill) { # kill common IP patterns $$tmpl =~ s/\%[_.-]?[irdh]//; # kill IP octet patterns $$tmpl =~ s/\%[1234][dh0](?:[_.-]\%[1234][dh0]){0,3}//; } # and now clean up to make sure we leave a valid DNS label... mostly. Should arguably # split on /\./ and process each label separately. $$tmpl =~ s/([_-]){3}/$1/ if !$thrsep; $$tmpl =~ s/([_-]){2}/$1/ if !$twosep; $$tmpl =~ s/[_-]\././; } # if ($subnet) # IP substitutions in template records: #major patterns: #dashed IP, forward and reverse #underscoreed IP, forward and reverse #dotted IP, forward and reverse (even if forward is... dumb) # -> %r for reverse, %i for forward, leading -, _, or . to indicate separator, defaults to - # %r or %-r => %4d-%3d-%2d-%1d # %_r => %4d_%3d_%2d_%1d # %.r => %4d.%3d.%2d.%1d # %i or %-i => %1d-%2d-%3d-%4d # %_i => %1d_%2d_%3d_%4d # %.i => %1d.%2d.%3d.%4d $$tmpl =~ s/\%r/\%4d-\%3d-\%2d-\%1d/g; $$tmpl =~ s/\%([-._])r/\%4d$1\%3d$1\%2d$1\%1d/g; $$tmpl =~ s/\%i/\%1d-\%2d-\%3d-\%4d/g; $$tmpl =~ s/\%([-._])i/\%1d$1\%2d$1\%3d$1\%4d/g; #hex-coded IP # %h $$tmpl =~ s/\%h/$iphex[0]$iphex[1]$iphex[2]$iphex[3]/g; #IP as decimal-coded 32-bit value # %d my $iptmp = $ipparts[0]*256*256*256 + $ipparts[1]*256*256 + $ipparts[2]*256 + $ipparts[3]; $$tmpl =~ s/\%d/$iptmp/g; #minor patterns (per-octet) # %[1234][dh0] #octet #hex-coded octet #0-padded octet $$tmpl =~ s/\%([1234])d/$ipparts[$1-1]/g; $$tmpl =~ s/\%([1234])h/$iphex[$1-1]/g; $$tmpl =~ s/\%([1234])0/$ippad[$1-1]/g; } # _template4_expand() # Broad syntactic check on the hostname. Checks for valid characters, correctly-expandable template patterns. # Takes the hostname, type, and live/default and forward/reverse flags # Returns true/false, sets errstr on failures sub _check_hostname_form { my ($hname,$rectype,$defrec,$revrec) = @_; if ($hname =~ /\%/ && ($rectype == 65282 || $rectype == 65283) ) { my $tmphost = $hname; # we don't actually need to test with the real IP passed; that saves a bit of fiddling. DNSDB::_template4_expand(\$tmphost, '10.10.10.10'); if ($tmphost =~ /\%/ || lc($tmphost) !~ /^(?:\*\.)?(?:[0-9a-z_.-]+)$/) { $errstr = "Invalid template $hname"; return; } } elsif ($rectype == $reverse_typemap{CNAME} && $revrec eq 'y') { # Allow / in reverse CNAME hostnames for sub-/24 delegation if (lc($hname) !~ m|^[0-9a-z_./-]+$|) { # error message is deliberately restrictive; special cases are SPECIAL and not for general use $errstr = "Hostnames may not contain anything other than (0-9 a-z . _)"; return; } } elsif ($revrec eq 'y') { # Reverse zones don't support @ in hostnames if (lc($hname) !~ /^(?:\*\.)?[0-9a-z_.-]+$/) { # error message is deliberately restrictive; special cases are SPECIAL and not for general use $errstr = "Hostnames may not contain anything other than (0-9 a-z . _)"; return; } } else { if (lc($hname) !~ /^(?:\*\.)?(?:[0-9a-z_.-]+|@)$/) { # Don't mention @, because it would be far too wordy to explain the nuance of @ $errstr = "Hostnames may not contain anything other than (0-9 a-z . _)"; return; } } return 1; } # _check_hostname_form() # Reverse a lurking tinydns-centric octal substitution sub _deoctal { my $targ = shift; while ($$targ =~ /\\(\d{3})/) { my $sub = chr(oct($1)); $$targ =~ s/\\$1/$sub/g; } } # _deoctal() ## ## Initialization and cleanup subs ## ## DNSDB::__cfgload() # Private sub to parse a config file and load it into %config # Takes a filename and a hashref to put the parsed entries in sub __cfgload { $errstr = ''; my $cfgfile = shift; my $cfg = shift; if (open CFG, "<$cfgfile") { while () { chomp; s/^\s*//; next if /^#/; next if /^$/; # hmm. more complex bits in this file might require [heading] headers, maybe? # $mode = $1 if /^\[(a-z)+]/; # DB connect info $cfg->{dbname} = $1 if /^dbname\s*=\s*([a-z0-9_.-]+)/i; $cfg->{dbuser} = $1 if /^dbuser\s*=\s*([a-z0-9_.-]+)/i; $cfg->{dbpass} = $1 if /^dbpass\s*=\s*([a-z0-9_.-]+)/i; $cfg->{dbhost} = $1 if /^dbhost\s*=\s*([a-z0-9_.-]+)/i; # Mail settings $cfg->{mailhost} = $1 if /^mailhost\s*=\s*([a-z0-9_.-]+)/i; $cfg->{mailnotify} = $1 if /^mailnotify\s*=\s*([a-z0-9_.\@-]+)/i; $cfg->{mailsender} = $1 if /^mailsender\s*=\s*([a-z0-9_.\@-]+)/i; $cfg->{mailname} = $1 if /^mailname\s*=\s*([a-z0-9\s_.-]+)/i; $cfg->{orgname} = $1 if /^orgname\s*=\s*([a-z0-9\s_.,'-]+)/i; $cfg->{domain} = $1 if /^domain\s*=\s*([a-z0-9_.-]+)/i; # session - note this is fed directly to CGI::Session $cfg->{timeout} = $1 if /^[tT][iI][mM][eE][oO][uU][tT]\s*=\s*(\d+[smhdwMy]?)/; $cfg->{sessiondir} = $1 if m{^sessiondir\s*=\s*([a-z0-9/_.-]+)}i; # misc $cfg->{log_failures} = $1 if /^log_failures\s*=\s*([a-z01]+)/i; $cfg->{perpage} = $1 if /^perpage\s*=\s*(\d+)/i; $cfg->{exportcache} = $1 if m{^exportcache\s*=\s*([a-z0-9/_.-]+)}i; $cfg->{usecache} = $1 if m{^usecache\s*=\s*([a-z01]+)}i; $cfg->{bind_export_conf_path} = $1 if m{^bind_export_conf_path\s*=\s*([a-z0-9/_.%-]+)}i; $cfg->{bind_export_zone_path} = $1 if m{^bind_export_zone_path\s*=\s*([a-z0-9/_.%-]+)}i; $cfg->{bind_export_shortlines} = $1 if /^bind_export_shortlines\s*=\s*([a-z01]+)/i; $cfg->{bind_export_autoexpire_ttl} = $1 if /^bind_export_autoexpire_ttl\s*=\s*(\d+)/; $cfg->{force_refresh} = $1 if /^force_refresh\s*=\s*([a-z01]+)/i; $cfg->{lowercase} = $1 if /^lowercase\s*=\s*([a-z01]+)/i; $cfg->{showrev_arpa} = $1 if /^showrev_arpa\s*=\s*([a-z]+)/i; $cfg->{template_skip_0} = $1 if /^template_skip_0\s*=\s*([a-z01]+)/i; $cfg->{template_skip_255} = $1 if /^template_skip_255\s*=\s*([a-z01]+)/i; $cfg->{autotxt} = $1 if /^autotxt\s*=\s*([a-z01]+)/i; # not supported in dns.cgi yet # $cfg->{templatedir} = $1 if m{^templatedir\s*=\s*([a-z0-9/_.-]+)}i; # $cfg->{templateoverride} = $1 if m{^templateoverride\s*=\s*([a-z0-9/_.-]+)}i; # RPC options $cfg->{rpcmode} = $1 if /^rpc_mode\s*=\s*(socket|HTTP|XMLRPC)\s*$/i; $cfg->{maxfcgi} = $1 if /^max_fcgi_requests\s*=\s*(\d+)\s*$/i; if (my ($tmp) = /^rpc_iplist\s*=\s*(.+)/i) { my @ips = split /[,\s]+/, $tmp; my $rpcsys = shift @ips; push @{$cfg->{rpcacl}{$rpcsys}}, @ips; } } close CFG; } else { $errstr = "Couldn't load configuration file $cfgfile: $!"; return; } return 1; } # end __cfgload() ## DNSDB::connectDB() # Creates connection to DNS database. # Requires the database name, username, and password. # Returns a handle to the db or undef on failure. # Set up for a PostgreSQL db; could be any transactional DBMS with the # right changes. # Called by new(); not intended to be called publicly. sub connectDB { $errstr = ''; my $dbname = shift; my $user = shift; my $pass = shift; my $dbh; my $DSN = "DBI:Pg:dbname=$dbname"; my $host = shift; $DSN .= ";host=$host" if $host; # Note that we want to autocommit by default, and we will turn it off locally as necessary. # We may not want to print gobbledygook errors; YMMV. Have to ponder that further. $dbh = DBI->connect($DSN, $user, $pass, { AutoCommit => 1, PrintError => 0 }); if (!$dbh) { $errstr = $DBI::errstr; return; } #) if(!$dbh); local $dbh->{RaiseError} = 1; eval { ##fixme: initialize the DB if we can't find the table (since, by definition, there's # nothing there if we can't select from it...) my $tblsth = $dbh->prepare("SELECT count(*) FROM pg_catalog.pg_class WHERE relkind='r' AND relname=?"); my ($tblcount) = $dbh->selectrow_array($tblsth, undef, ('misc')); # return (undef,$DBI::errstr) if $dbh->err; #if ($tblcount == 0) { # # create tables one at a time, checking for each. # return (undef, "check table misc missing"); #} # Return here if we can't select. # This should retrieve the dbversion key. my $sth = $dbh->prepare("SELECT key,value FROM misc WHERE misc_id=1"); $sth->execute(); # return (undef,$DBI::errstr) if ($sth->err); ##fixme: do stuff to the DB on version mismatch # x.y series should upgrade on $DNSDB::VERSION > misc(key=>version) # DB should be downward-compatible; column defaults should give sane (if possibly # useless-and-needs-help) values in columns an older software stack doesn't know about. # See if the select returned anything (or null data). This should # succeed if the select executed, but... $sth->fetchrow(); # return (undef,$DBI::errstr) if ($sth->err); $sth->finish; }; # wrapped DB checks if ($@) { $errstr = $@; return; } # If we get here, we should be OK. return $dbh; } # end connectDB ## DNSDB::finish() # Cleans up after database handles and so on. # Requires a database handle sub finish { my $self = shift; $self->{dbh}->disconnect; } # end finish ## DNSDB::initGlobals() # Initialize global variables # NB: this does NOT include web-specific session variables! sub initGlobals { my $self = shift; my $dbh = $self->{dbh}; # load record types from database my $sth = $dbh->prepare("SELECT val,name,stdflag FROM rectypes"); $sth->execute; while (my ($recval,$recname,$stdflag) = $sth->fetchrow_array()) { $typemap{$recval} = $recname; $reverse_typemap{$recname} = $recval; # now we fill the record validation function hash if ($stdflag < 5) { my $fn = "_validate_$recval"; $validators{$recval} = \&$fn; } else { my $fn = "sub { return ('FAIL','Type $recval ($recname) not supported'); }"; $validators{$recval} = eval $fn; } } } # end initGlobals ## DNSDB::initRPC() # Takes a remote username and remote fullname. # Sets up the RPC logging-pseudouser if needed. # Sets the %userdata hash for logging. # Returns undef on failure sub initRPC { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; return if !$args{username}; return if !$args{fullname}; $args{username} = "$args{username}/$args{rpcsys}"; my $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status". " FROM users WHERE username=?", undef, ($args{username}) ); if (!$tmpuser) { $dbh->do("INSERT INTO users (username,password,firstname,type) VALUES (?,'RPC',?,'R')", undef, ($args{username}, $args{fullname}) ); $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status". " FROM users WHERE username=?", undef, ($args{username}) ); } $tmpuser->{lastname} = '' if !$tmpuser->{lastname}; $self->{loguserid} = $tmpuser->{userid}; $self->{logusername} = $tmpuser->{username}; $self->{logfullname} = "$tmpuser->{firstname} $tmpuser->{lastname} ($args{rpcsys})"; return 1 if $tmpuser; } # end initRPC() ## DNSDB::login() # Takes a database handle, username and password # Returns a userdata hash (UID, GID, username, fullname parts) if username exists, # password matches the one on file, and account is not disabled # Returns undef otherwise sub login { my $self = shift; my $dbh = $self->{dbh}; my $user = shift; my $pass = shift; my $userinfo = $dbh->selectrow_hashref("SELECT user_id,group_id,password,firstname,lastname,status". " FROM users WHERE username=?", undef, ($user) ); return if !$userinfo; return if !$userinfo->{status}; if ($userinfo->{password} =~ m|^\$1\$([A-Za-z0-9/.]+)\$|) { # native passwords (crypt-md5) return if $userinfo->{password} ne unix_md5_crypt($pass,$1); } elsif ($userinfo->{password} =~ /^[0-9a-f]{32}$/) { # VegaDNS import (hex-coded MD5) return if $userinfo->{password} ne md5_hex($pass); } else { # plaintext (convenient now and then) return if $userinfo->{password} ne $pass; } return $userinfo; } # end login() ## DNSDB::initActionLog() # Set up action logging. Takes a database handle and user ID # Sets some internal globals and Does The Right Thing to set up a logging channel. # This sets up _log() to spew out log entries to the defined channel without worrying # about having to open a file or a syslog channel ##fixme Need to call _initActionLog_blah() for various logging channels, configured # via dnsdb.conf, in $self->{log_channel} or something # See https://secure.deepnet.cx/trac/dnsadmin/ticket/21 sub initActionLog { my $self = shift; my $dbh = $self->{dbh}; my $uid = shift; return if !$uid; # snag user info for logging. there's got to be a way to not have to pass this back # and forth from a caller, but web usage means no persistence we can rely on from # the server side. my ($username,$fullname) = $dbh->selectrow_array("SELECT username, firstname || ' ' || lastname". " FROM users WHERE user_id=?", undef, ($uid)); ##fixme: errors are unpossible! $self->{logusername} = $username; $self->{loguserid} = $uid; $self->{logfullname} = $fullname; # convert to real check once we have other logging channels # if ($self->{log_channel} eq 'sql') { # Open Log, Sez Me! # } } # end initActionLog ## DNSDB::getPermissions() # Get permissions from DB # Requires DB handle, group or user flag, ID, and hashref. sub getPermissions { my $self = shift; my $dbh = $self->{dbh}; my $type = shift; my $id = shift; my $hash = shift; my $sql = qq( SELECT p.admin,p.self_edit, p.group_create,p.group_edit,p.group_delete, p.user_create,p.user_edit,p.user_delete, p.domain_create,p.domain_edit,p.domain_delete, p.record_create,p.record_edit,p.record_delete,p.record_locchg, p.location_create,p.location_edit,p.location_delete,p.location_view FROM permissions p ); if ($type eq 'group') { $sql .= qq( JOIN groups g ON g.permission_id=p.permission_id WHERE g.group_id=? ); } else { $sql .= qq( JOIN users u ON u.permission_id=p.permission_id WHERE u.user_id=? ); } my $sth = $dbh->prepare($sql); ##fixme? we don't trap other plain SELECT errors $sth->execute($id); # my $permref = $sth->fetchrow_hashref; # return $permref; # $hash = $permref; # Eww. Need to learn how to forcibly drop a hashref onto an existing hash. ($hash->{admin},$hash->{self_edit}, $hash->{group_create},$hash->{group_edit},$hash->{group_delete}, $hash->{user_create},$hash->{user_edit},$hash->{user_delete}, $hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete}, $hash->{record_create},$hash->{record_edit},$hash->{record_delete},$hash->{record_locchg}, $hash->{location_create},$hash->{location_edit},$hash->{location_delete},$hash->{location_view} ) = $sth->fetchrow_array; } # end getPermissions() ## DNSDB::changePermissions() # Update an ACL entry # Takes a db handle, type, owner-id, and hashref for the changed permissions. sub changePermissions { my $self = shift; my $dbh = $self->{dbh}; my $type = shift; my $id = shift; my $newperms = shift; my $inherit = shift || 0; my $resultmsg = ''; # see if we're switching from inherited to custom. for bonus points, # snag the permid and parent permid anyway, since we'll need the permid # to set/alter custom perms, and both if we're switching from custom to # inherited. my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id,". ($type eq 'user' ? 'u.group_id,u.username' : 'u.parent_group_id,u.group_name'). " FROM ".($type eq 'user' ? 'users' : 'groups')." u ". " JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ". " WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?"); $sth->execute($id); my ($wasinherited,$permid,$parpermid,$parid,$name) = $sth->fetchrow_array; # hack phtoui # group id 1 is "special" in that it's it's own parent (err... possibly.) # may make its parent id 0 which doesn't exist, and as a bonus is Perl-false. $wasinherited = 0 if ($type eq 'group' && $id == 1); local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; # Wrap all the SQL in a transaction eval { if ($inherit) { $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ". "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) ); $dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) ); } else { if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms ##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users # ... if'n'when we have groups with fully inherited permissions. # SQL is coo $dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ". "SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) ); ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ". "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) ); $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ". "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) ); } # and now set the permissions we were passed foreach (@permtypes) { if (defined ($newperms->{$_})) { $dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) ); } } } # (inherited->)? custom if ($type eq 'user') { $resultmsg = "Updated permissions for user $name"; } else { $resultmsg = "Updated default permissions for group $name"; } $self->_log(group_id => ($type eq 'user' ? $parid : $id), entry => $resultmsg); $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; return ('FAIL',"Error changing permissions: $msg"); } return ('OK',$resultmsg); } # end changePermissions() ## DNSDB::comparePermissions() # Compare two permission hashes # Returns '>', '<', '=', '!' sub comparePermissions { my $self = shift; my $p1 = shift; my $p2 = shift; my $retval = '='; # assume equality until proven otherwise no warnings "uninitialized"; foreach (@permtypes) { next if $p1->{$_} == $p2->{$_}; # equal is good if ($p1->{$_} && !$p2->{$_}) { if ($retval eq '<') { # if we've already found an unequal pair where $retval = '!'; # $p2 has more access, and we now find a pair last; # where $p1 has more access, the overall access } # is neither greater or lesser, it's unequal. $retval = '>'; } if (!$p1->{$_} && $p2->{$_}) { if ($retval eq '>') { # if we've already found an unequal pair where $retval = '!'; # $p1 has more access, and we now find a pair last; # where $p2 has more access, the overall access } # is neither greater or lesser, it's unequal. $retval = '<'; } } return $retval; } # end comparePermissions() ## DNSDB::changeGroup() # Change group ID of an entity # Takes a database handle, entity type, entity ID, and new group ID sub changeGroup { my $self = shift; my $dbh = $self->{dbh}; my $type = shift; my $id = shift; my $newgrp = shift; ##fixme: fail on not enough args #return ('FAIL', "Missing return ('FAIL', "Can't change the group of a $type") unless grep /^$type$/, ('domain','revzone','user','group'); # could be extended for defrecs? # Collect some names for logging and messages my $entname; if ($type eq 'domain') { $entname = $self->domainName($id); } elsif ($type eq 'revzone') { $entname = $self->revName($id); } elsif ($type eq 'user') { $entname = $self->userFullName($id, '%u'); } elsif ($type eq 'group') { $entname = $self->groupName($id); } my ($oldgid) = $dbh->selectrow_array("SELECT group_id FROM $par_tbl{$type} WHERE $id_col{$type}=?", undef, ($id)); my $oldgname = $self->groupName($oldgid); my $newgname = $self->groupName($newgrp); return ('FAIL', "Can't move things into a group that doesn't exist") if !$newgname; return ('WARN', "Nothing to do, new group is the same as the old group") if $oldgid == $newgrp; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; eval { $dbh->do("UPDATE $par_tbl{$type} SET group_id=? WHERE $id_col{$type}=?", undef, ($newgrp, $id)); # Log the change in both the old and new groups $self->_log(group_id => $oldgid, entry => "Moved $type $entname from $oldgname to $newgname"); $self->_log(group_id => $newgrp, entry => "Moved $type $entname from $oldgname to $newgname"); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $oldgid, entry => "Error moving $type $entname to $newgname: $msg"); $dbh->commit; # since we enabled transactions earlier } return ('FAIL',"Error moving $type $entname to $newgname: $msg"); } return ('OK',"Moved $type $entname from $oldgname to $newgname"); } # end changeGroup() ## ## Processing subs ## ## DNSDB::addDomain() # Add a domain # Takes a database handle, domain name, numeric group, boolean(ish) state (active/inactive), # and a default location indicator # Returns a status code and message sub addDomain { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $domain = shift; return ('FAIL',"Domain must not be blank\n") if !$domain; my $group = shift; return ('FAIL',"Group must be specified\n") if !defined($group); my $state = shift; return ('FAIL',"Domain status must be specified\n") if !defined($state); my $defloc = shift || ''; $state = 1 if $state =~ /^active$/; $state = 1 if $state =~ /^on$/; $state = 0 if $state =~ /^inactive$/; $state = 0 if $state =~ /^off$/; return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/; $domain = lc($domain) if $self->{lowercase}; return ('FAIL', "Invalid characters in domain") if $domain !~ /^[a-zA-Z0-9_.-]+$/; my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE lower(domain) = lower(?) AND default_location = ?"); my $dom_id; # quick check to start to see if we've already got one $sth->execute($domain, $defloc); ($dom_id) = $sth->fetchrow_array; return ('FAIL', "Domain already exists") if $dom_id; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; # Wrap all the SQL in a transaction eval { # insert the domain... $dbh->do("INSERT INTO domains (domain,group_id,status,default_location,zserial) VALUES (?,?,?,?,?)", undef, ($domain, $group, $state, $defloc, scalar(time()) ) ); # get the ID... ($dom_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?) AND default_location = ?", undef, ($domain, $defloc)); my $logparent = $self->_log(domain_id => $dom_id, group_id => $group, entry => "Added ".($state ? 'active' : 'inactive')." domain $domain"); # ... and now we construct the standard records from the default set. NB: group should be variable. my $sth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?"); my $sth_in = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,distance,weight,port,ttl,location)". " VALUES ($dom_id,?,?,?,?,?,?,?,?)"); $sth->execute($group); while (my ($host, $type, $val, $dist, $weight, $port, $ttl) = $sth->fetchrow_array()) { $host =~ s/DOMAIN/$domain/g; $val =~ s/DOMAIN/$domain/g; _caseclean(\$type, \$host, \$val, 'n', 'n') if $self->{lowercase}; $sth_in->execute($host, $type, $val, $dist, $weight, $port, $ttl, $defloc); if ($typemap{$type} eq 'SOA') { my @tmp1 = split /:/, $host; my @tmp2 = split /:/, $val; $self->_log(domain_id => $dom_id, group_id => $group, logparent => $logparent, entry => "[new $domain] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ". "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl"); } else { my $logentry = "[new $domain] Added record '$host $typemap{$type}"; $logentry .= " [distance $dist]" if $typemap{$type} eq 'MX'; $logentry .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$type} eq 'SRV'; $self->_log(domain_id => $dom_id, group_id => $group, logparent => $logparent, entry => $logentry." $val', TTL $ttl"); } } # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; $self->_log(group_id => $group, entry => "Failed adding domain $domain ($msg)") if $self->{log_failures}; $dbh->commit; # since we enabled transactions earlier return ('FAIL',$msg); } else { return ('OK',$dom_id); } } # end addDomain ## DNSDB::delZone() # Delete a forward or reverse zone. # Takes a database handle, zone ID, and forward/reverse flag. # for now, just delete the records, then the domain. # later we may want to archive it in some way instead (status code 2, for example?) sub delZone { my $self = shift; my $dbh = $self->{dbh}; my $zoneid = shift; my $revrec = shift; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; return ('FAIL', 'Need a zone identifier to look up') if !$zoneid; my $msg = ''; my $failmsg = ''; my $zone = ($revrec eq 'n' ? $self->domainName($zoneid) : $self->revName($zoneid)); my $zonestatus = $self->zoneStatus($zoneid, $revrec); return ('FAIL', ($revrec eq 'n' ? 'Domain' : 'Reverse zone')." ID $zoneid doesn't exist") if !$zone; # Set this up here since we may use if if $self->{log_failures} is enabled my %loghash; $loghash{domain_id} = $zoneid if $revrec eq 'n'; $loghash{rdns_id} = $zoneid if $revrec eq 'y'; $loghash{group_id} = $self->parentID( id => $zoneid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec); # Wrap all the SQL in a transaction eval { # Disentangle custom record types before removing the # ones that are only in the zone to be deleted if ($revrec eq 'n') { my $sth = $dbh->prepare("UPDATE records SET type=?,domain_id=0 WHERE domain_id=? AND type=?"); $failmsg = "Failure converting multizone types to single-zone"; $sth->execute($reverse_typemap{PTR}, $zoneid, 65280); $sth->execute($reverse_typemap{PTR}, $zoneid, 65281); $sth->execute(65282, $zoneid, 65283); $sth->execute(65282, $zoneid, 65284); $failmsg = "Failure removing domain records"; $dbh->do("DELETE FROM records WHERE domain_id=?", undef, ($zoneid)); $failmsg = "Failure removing domain"; $dbh->do("DELETE FROM domains WHERE domain_id=?", undef, ($zoneid)); } else { my $sth = $dbh->prepare("UPDATE records SET type=?,rdns_id=0 WHERE rdns_id=? AND type=?"); $failmsg = "Failure converting multizone types to single-zone"; $sth->execute($reverse_typemap{A}, $zoneid, 65280); $sth->execute($reverse_typemap{AAAA}, $zoneid, 65281); # We don't have an "A template" or "AAAA template" type, although it might be useful for symmetry. # $sth->execute(65286?, $zoneid, 65283); # $sth->execute(65286?, $zoneid, 65284); $failmsg = "Failure removing reverse records"; $dbh->do("DELETE FROM records WHERE rdns_id=?", undef, ($zoneid)); $failmsg = "Failure removing reverse zone"; $dbh->do("DELETE FROM revzones WHERE rdns_id=?", undef, ($zoneid)); } $msg = "Deleted ".($zonestatus ? '' : 'inactive ').($revrec eq 'n' ? 'domain' : 'reverse zone')." $zone"; $loghash{entry} = $msg; $self->_log(%loghash); # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { $msg = $@; eval { $dbh->rollback; }; $loghash{entry} = "Error deleting $zone: $msg ($failmsg)"; if ($self->{log_failures}) { $self->_log(%loghash); $dbh->commit; # since we enabled transactions earlier } return ('FAIL', $loghash{entry}); } else { return ('OK', $msg); } } # end delZone() ## DNSDB::domainName() # Return the domain name based on a domain ID # Takes a database handle and the domain ID # Returns the domain name or undef on failure sub domainName { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $domid = shift; my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) ); $errstr = $DBI::errstr if !$domname; return $domname if $domname; } # end domainName() ## DNSDB::revName() # Return the reverse zone name based on an rDNS ID # Takes a database handle and the rDNS ID, and an optional flag to force return of the CIDR zone # instead of the formal .arpa zone name # Returns the reverse zone name or undef on failure sub revName { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $revid = shift; my $cidrflag = shift || 'n'; my ($revname) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id=?", undef, ($revid) ); $errstr = $DBI::errstr if !$revname; my $tmp = new NetAddr::IP $revname; $revname = _ZONE($tmp, 'ZONE', 'r', '.').($tmp->{isv6} ? '.ip6.arpa' : '.in-addr.arpa') if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') && $cidrflag eq 'n'; return $revname if $revname; } # end revName() ## DNSDB::domainID() # Takes a domain name and default location # Returns the domain ID number sub domainID { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $domain = shift; my $location = shift; # Note that location may be *empty*, but it may not be *undefined* if (!defined($location)) { $errstr = "Missing location"; return; } my $sql = "SELECT domain_id FROM domains WHERE lower(domain) = lower(?)"; my @zargs = ($domain); # yay magic strings! if ($location eq ':ANY:') { # no-op } else { $sql .= " AND default_location = ?"; push @zargs, $location; } my ($domid) = $dbh->selectrow_array($sql, undef, @zargs); if (!$domid) { if ($dbh->err) { $errstr = $DBI::errstr; } else { $errstr = "Domain $domain not present"; } } return $domid if $domid; } # end domainID() ## DNSDB::revID() # Takes a reverse zone name and default location # Assumes the reverse zone is in the logical CIDR form, not the formal .arpa form # Returns the rDNS ID number sub revID { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $revzone = shift; my $location = shift; # Note that location may be *empty*, but it may not be *undefined* if (!defined($location)) { $errstr = "Missing location"; return; } my $sql = "SELECT rdns_id FROM revzones WHERE revnet = ?"; my @zargs = ($revzone); # yay magic strings! if ($location eq ':ANY:') { # no-op } else { $sql .= " AND default_location = ?"; push @zargs, $location; } my ($revid) = $dbh->selectrow_array($sql, undef, @zargs); if (!$revid) { if ($dbh->err) { $errstr = $DBI::errstr; } else { $errstr = "Reverse zone $revzone not present"; } } return $revid if $revid; } # end revID() ## DNSDB::addRDNS # Adds a reverse DNS zone # Takes a database handle, CIDR block, reverse DNS pattern, numeric group, # and boolean(ish) state (active/inactive) # Returns a status code and message sub addRDNS { my $self = shift; my $dbh = $self->{dbh}; my $zone = shift; # Autodetect formal .arpa zones if ($zone =~ /\.arpa\.?$/) { my $code; ($code,$zone) = _zone2cidr($zone); return ('FAIL', $zone) if $code eq 'FAIL'; } $zone = NetAddr::IP->new($zone); return ('FAIL',"Zone name must be a valid CIDR netblock") unless ($zone && $zone->addr !~ /^0/); my $revpatt = shift; # construct a custom (A/AAAA+)? PTR template record my $group = shift; my $state = shift; my $defloc = shift || ''; $state = 1 if $state =~ /^active$/; $state = 1 if $state =~ /^on$/; $state = 0 if $state =~ /^inactive$/; $state = 0 if $state =~ /^off$/; return ('FAIL',"Invalid zone status") if $state !~ /^\d+$/; # quick check to start to see if we've already got one my ($rdns_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet = ? AND default_location = ?", undef, ("$zone", $defloc)); return ('FAIL', "Zone already exists") if $rdns_id; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $warnstr = ''; my $defttl = 3600; # 1 hour should be reasonable. And unless things have gone horribly # wrong, we should have a value to override this anyway. # Wrap all the SQL in a transaction eval { # insert the zone... $dbh->do("INSERT INTO revzones (revnet,group_id,status,default_location,zserial) VALUES (?,?,?,?,?)", undef, ($zone, $group, $state, $defloc, scalar(time()) ) ); # get the ID... ($rdns_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')"); $self->_log(rdns_id => $rdns_id, group_id => $group, entry => "Added ".($state ? 'active' : 'inactive')." reverse zone $zone"); # ... and now we construct the standard records from the default set. NB: group should be variable. my $sth = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?"); my $sth_in = $dbh->prepare("INSERT INTO records (rdns_id,domain_id,host,type,val,ttl,location)". " VALUES ($rdns_id,?,?,?,?,?,?)"); $sth->execute($group); while (my ($host,$type,$val,$ttl) = $sth->fetchrow_array()) { # Silently skip v4/v6 mismatches. This is not an error, this is expected. if ($zone->{isv6}) { next if ($type == 65280 || $type == 65283); } else { next if ($type == 65281 || $type == 65284); } $host =~ s/ADMINDOMAIN/$self->{domain}/g; # Check to make sure the IP stubs will fit in the zone. Under most usage failures here should be rare. # On failure, tack a note on to a warning string and continue without adding this record. # While we're at it, we substitute $zone for ZONE in the value. if ($val eq 'ZONE') { # If we've got a pattern, we skip the default record version on (A+)PTR-template types next if $revpatt && ($type == 65282 || $type == 65283); ##fixme? do we care if we have multiple whole-zone templates? $val = $zone->network; } elsif ($val =~ /ZONE/) { my $tmpval = $val; $tmpval =~ s/ZONE//; # Bend the rules and allow single-trailing-number PTR or PTR template records to be inserted # as either v4 or v6. May make this an off-by-default config flag # Note that the origin records that may trigger this **SHOULD** already have ZONE,\d if ($type == 12 || $type == 65282) { $tmpval =~ s/[,.]/::/ if ($tmpval =~ /^[,.]\d+$/ && $zone->{isv6}); $tmpval =~ s/[,:]+/./ if ($tmpval =~ /^(?:,|::)\d+$/ && !$zone->{isv6}); } my $addr; if ($self->_ipparent('n', 'y', \$tmpval, $rdns_id, \$addr)) { $val = $addr->addr; } else { $warnstr .= "\nDefault record '$val $typemap{$type} $host' doesn't fit in $zone, skipping"; next; } } # Substitute $zone for ZONE in the hostname, but only for non-NS records. # NS records get this substitution on the value instead. $host = _ZONE($zone, $host) if $type != 2; # Fill in the forward domain ID if we can find it, otherwise: # Coerce type down to PTR or PTR template if we can't my $domid = 0; if ($type >= 65280) { if (!($domid = $self->_hostparent($host))) { $warnstr .= "\nRecord added as PTR instead of $typemap{$type}; domain not found for $host"; $type = $reverse_typemap{PTR}; $domid = 0; # just to be explicit. } } _caseclean(\$type, \$host, \$val, 'n', 'y') if $self->{lowercase}; $sth_in->execute($domid,$host,$type,$val,$ttl,$defloc); if ($typemap{$type} eq 'SOA') { my @tmp1 = split /:/, $host; my @tmp2 = split /:/, $val; $self->_log(rdns_id => $rdns_id, group_id => $group, entry => "[new $zone] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ". "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl"); $defttl = $tmp2[3]; } else { my $logentry = "[new $zone] Added record '$host $typemap{$type} $val', TTL $ttl"; $logentry .= ", default location ".$self->getLoc($defloc)->{description} if $defloc; $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group, entry => $logentry); } } # Generate record based on provided pattern. if ($revpatt) { my $host; my $type = ($zone->{isv6} ? 65284 : 65283); my $val = $zone->network; # Substitute $zone for ZONE in the hostname. $host = _ZONE($zone, $revpatt); my $domid = 0; if (!($domid = $self->_hostparent($host))) { $warnstr .= "\nDefault pattern added as PTR template instead of $typemap{$type}; domain not found for $host"; $type = 65282; $domid = 0; # just to be explicit. } $sth_in->execute($domid,$host,$type,$val,$defttl,$defloc); my $logentry = "[new $zone] Added record '$host $typemap{$type}"; $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group, entry => $logentry." $val', TTL $defttl from pattern"); } # If there are warnings (presumably about default records skipped for cause) log them $self->_log(rdns_id => $rdns_id, group_id => $group, entry => "Warning(s) adding $zone:$warnstr") if $warnstr; # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; $self->_log(group_id => $group, entry => "Failed adding reverse zone $zone ($msg)") if $self->{log_failures}; $dbh->commit; # since we enabled transactions earlier return ('FAIL',$msg); } else { my $retcode = 'OK'; if ($warnstr) { $resultstr = $warnstr; $retcode = 'WARN'; } return ($retcode, $rdns_id); } } # end addRDNS() ## DNSDB::getZoneCount # Get count of zones in group or groups # Takes a database handle and hash containing: # - the "current" group # - an array of "acceptable" groups # - a flag for forward/reverse zones # - Optionally accept a "starts with" and/or "contains" filter argument # Returns an integer count of the resulting zone list. sub getZoneCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones push @filterargs, $args{filter} if $args{filter}; my $sql; # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read if ($args{revrec} eq 'n') { $sql = "SELECT count(*) FROM domains". " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND domain ~* ?" : ''). ($args{filter} ? " AND domain ~* ?" : ''); } else { $sql = "SELECT count(*) FROM revzones". " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : ''); # if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') { # Just In Case the UI is using formal .arpa notation, and someone enters something reversed, # we want to match both the formal and natural zone name $sql .= ($args{filter} ? " AND (CAST(revnet AS VARCHAR) ~* ? OR CAST(revnet AS VARCHAR) ~* ?)" : ''); push @filterargs, join('[.]',reverse(split(/\[\.\]/,$args{filter}))) if $args{filter}; # } else { # $sql .= ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : ''); # } } my ($count) = $dbh->selectrow_array($sql, undef, @filterargs); return $count; } # end getZoneCount() ## DNSDB::getZoneList() # Get a list of zones in the specified group(s) # Takes the same arguments as getZoneCount() above # Returns a reference to an array of hashrefs suitable for feeding to HTML::Template sub getZoneList { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my @zonelist; $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones push @filterargs, $args{filter} if $args{filter}; my $sql; # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read if ($args{revrec} eq 'n') { $args{sortby} = 'domain' if !$args{sortby} || !grep /^$args{sortby}$/, ('domain','group','status'); $sql = q(SELECT domain_id AS zoneid, domain AS zone, status, groups.group_name AS group, l.description AS location FROM domains LEFT JOIN locations l ON domains.default_location=l.location INNER JOIN groups ON domains.group_id=groups.group_id ). "WHERE domains.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND domain ~* ?" : ''). ($args{filter} ? " AND domain ~* ?" : ''); } else { ##fixme: arguably startwith here is irrelevant. depends on the UI though. $args{sortby} = 'revnet' if !$args{sortby} || !grep /^$args{sortby}$/, ('revnet','group','status'); $sql = q(SELECT rdns_id AS zoneid, revnet AS zone, status, groups.group_name AS group, l.description AS location FROM revzones LEFT JOIN locations l ON revzones.default_location=l.location INNER JOIN groups ON revzones.group_id=groups.group_id ). " WHERE revzones.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : ''); # if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') { # Just In Case the UI is using formal .arpa notation, and someone enters something reversed, # we want to match both the formal and natural zone name $sql .= ($args{filter} ? " AND (CAST(revnet AS VARCHAR) ~* ? OR CAST(revnet AS VARCHAR) ~* ?)" : ''); push @filterargs, join('[.]',reverse(split(/\[\.\]/,$args{filter}))) if $args{filter}; # } else { # $sql .= ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : ''); # } } # A common tail. $sql .= " ORDER BY ".($args{sortby} eq 'group' ? 'groups.group_name' : $args{sortby})." $args{sortorder} ". ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage}". " OFFSET ".$args{offset}*$self->{perpage}); my @working; my $zsth = $dbh->prepare($sql); $zsth->execute(@filterargs); while (my $zone = $zsth->fetchrow_hashref) { if ($args{revrec} eq 'y' && ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all')) { my $tmp = new NetAddr::IP $zone->{zone}; $zone->{zone} = DNSDB::_ZONE($tmp, 'ZONE', 'r', '.').($tmp->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); } push @working, $zone; } return \@working; } # end getZoneList() ## DNSDB::getZoneLocation() # Retrieve the default location for a zone. # Takes a database handle, forward/reverse flag, and zone ID sub getZoneLocation { my $self = shift; my $dbh = $self->{dbh}; my $revrec = shift; my $zoneid = shift; my ($loc) = $dbh->selectrow_array("SELECT default_location FROM ". ($revrec eq 'n' ? 'domains WHERE domain_id = ?' : 'revzones WHERE rdns_id = ?'), undef, ($zoneid)); return $loc; } # end getZoneLocation() ## DNSDB::addGroup() # Add a group # Takes a database handle, group name, parent group, hashref for permissions, # and optional template-vs-cloneme flag for the default records # Returns a status code and message sub addGroup { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $groupname = shift; my $pargroup = shift; my $permissions = shift; # 0 indicates "custom", hardcoded. # Any other value clones that group's default records, if it exists. my $inherit = shift || 0; ##fixme: need a flag to indicate clone records or ? # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my ($group_id) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($groupname)); return ('FAIL', "Group already exists") if $group_id; # Wrap all the SQL in a transaction eval { $dbh->do("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)", undef, ($pargroup, $groupname) ); my ($groupid) = $dbh->selectrow_array("SELECT currval('groups_group_id_seq')"); # We work through the whole set of permissions instead of specifying them so # that when we add a new permission, we don't have to change the code anywhere # that doesn't explicitly deal with that specific permission. my @permvals; foreach (@permtypes) { if (!defined ($permissions->{$_})) { push @permvals, 0; } else { push @permvals, $permissions->{$_}; } } $dbh->do("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")", undef, ($groupid, @permvals) ); my ($permid) = $dbh->selectrow_array("SELECT currval('permissions_permission_id_seq')"); $dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid"); # Default records my $sthf = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ". "VALUES ($groupid,?,?,?,?,?,?,?)"); my $sthr = $dbh->prepare("INSERT INTO default_rev_records (group_id,host,type,val,ttl) ". "VALUES ($groupid,?,?,?,?)"); if ($inherit) { # Duplicate records from parent. Actually relying on inherited records feels # very fragile, and it would be problematic to roll over at a later time. my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?"); $sth2->execute($pargroup); while (my @clonedata = $sth2->fetchrow_array) { $sthf->execute(@clonedata); } # And now the reverse records $sth2 = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?"); $sth2->execute($pargroup); while (my @clonedata = $sth2->fetchrow_array) { $sthr->execute(@clonedata); } } else { ##fixme: Hardcoding is Bad, mmmmkaaaay? # reasonable basic defaults for SOA, MX, NS, and minimal hosting # could load from a config file, but somewhere along the line we need hardcoded bits. $sthf->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400); $sthf->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200); $sthf->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200); $sthf->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200); $sthf->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200); $sthf->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200); # reasonable basic defaults for generic reverse zone. Same as initial SQL tabledef. $sthr->execute('hostmaster.ADMINDOMAIN:ns1.ADMINDOMAIN', 6, '10800:3600:604800:10800', 86400); $sthr->execute('unused-%r.ADMINDOMAIN', 65283, 'ZONE', 3600); } $self->_log(group_id => $pargroup, entry => "Added group $groupname"); # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $pargroup, entry => "Failed to add group $groupname: $msg"); $dbh->commit; } return ('FAIL',$msg); } return ('OK','OK'); } # end addGroup() ## DNSDB::delGroup() # Delete a group. # Takes a group ID # Returns a status code and message sub delGroup { my $self = shift; my $dbh = $self->{dbh}; my $groupid = shift; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; ##fixme: locate "knowable" error conditions and deal with them before the eval # ... or inside, whatever. # -> domains still exist in group # -> ... my $failmsg = ''; my $resultmsg = ''; # collect some pieces for logging and error messages my $groupname = $self->groupName($groupid); my $parid = $self->parentID(id => $groupid, type => 'group'); # Wrap all the SQL in a transaction eval { # Check for Things in the group $failmsg = "Can't remove group $groupname"; my ($grpcnt) = $dbh->selectrow_array("SELECT count(*) FROM groups WHERE parent_group_id=?", undef, ($groupid)); die "$grpcnt groups still in group\n" if $grpcnt; my ($domcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($groupid)); die "$domcnt domains still in group\n" if $domcnt; my ($revcnt) = $dbh->selectrow_array("SELECT count(*) FROM revzones WHERE group_id=?", undef, ($groupid)); die "$revcnt reverse zones still in group\n" if $revcnt; my ($usercnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($groupid)); die "$usercnt users still in group\n" if $usercnt; $failmsg = "Failed to delete default records for $groupname"; $dbh->do("DELETE from default_records WHERE group_id=?", undef, ($groupid)); $failmsg = "Failed to delete default reverse records for $groupname"; $dbh->do("DELETE from default_rev_records WHERE group_id=?", undef, ($groupid)); $failmsg = "Failed to remove group $groupname"; $dbh->do("DELETE from groups WHERE group_id=?", undef, ($groupid)); $self->_log(group_id => $parid, entry => "Deleted group $groupname"); $resultmsg = "Deleted group $groupname"; # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $parid, entry => "$failmsg: $msg"); $dbh->commit; # since we enabled transactions earlier } return ('FAIL',"$failmsg: $msg"); } return ('OK',$resultmsg); } # end delGroup() ## DNSDB::getChildren() # Get a list of all groups whose parent^n is group # Takes a database handle, group ID, reference to an array to put the group IDs in, # and an optional flag to return only immediate children or all children-of-children # default to returning all children # Calls itself sub getChildren { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $rootgroup = shift; my $groupdest = shift; my $immed = shift || 'all'; # special break for default group; otherwise we get stuck. if ($rootgroup == 1) { # by definition, group 1 is the Root Of All Groups my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)". ($immed ne 'all' ? " AND parent_group_id=1" : '')." ORDER BY group_name"); $sth->execute; while (my @this = $sth->fetchrow_array) { push @$groupdest, @this; } } else { my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=? ORDER BY group_name"); $sth->execute($rootgroup); return if $sth->rows == 0; my @grouplist; while (my ($group) = $sth->fetchrow_array) { push @$groupdest, $group; $self->getChildren($group, $groupdest) if $immed eq 'all'; } } } # end getChildren() ## DNSDB::groupName() # Return the group name based on a group ID # Takes a database handle and the group ID # Returns the group name or undef on failure sub groupName { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $groupid = shift; my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?"); $sth->execute($groupid); my ($groupname) = $sth->fetchrow_array(); $errstr = $DBI::errstr if !$groupname; return $groupname if $groupname; } # end groupName ## DNSDB::getGroupCount() # Get count of subgroups in group or groups # Takes a database handle and hash containing: # - the "current" group # - an array of "acceptable" groups # - Optionally accept a "starts with" and/or "contains" filter argument # Returns an integer count of the resulting group list. sub getGroupCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; my $sql = "SELECT count(*) FROM groups ". "WHERE parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND group_name ~* ?" : ''). ($args{filter} ? " AND group_name ~* ?" : ''); my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) ); $errstr = $dbh->errstr if !$count; return $count; } # end getGroupCount ## DNSDB::getGroupList() # Get a list of sub^n-groups in the specified group(s) # Takes the same arguments as getGroupCount() above # Returns an arrayref containing hashrefs suitable for feeding straight to HTML::Template sub getGroupList { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; # protection against bad or missing arguments $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{sortby} = 'group' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; # munge sortby for columns in database $args{sortby} = 'g.group_name' if $args{sortby} eq 'group'; $args{sortby} = 'g2.group_name' if $args{sortby} eq 'parent'; my $sql = q(SELECT g.group_id AS groupid, g.group_name AS groupname, g2.group_name AS pgroup FROM groups g INNER JOIN groups g2 ON g2.group_id=g.parent_group_id ). " WHERE g.parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND g.group_name ~* ?" : ''). ($args{filter} ? " AND g.group_name ~* ?" : ''). " GROUP BY g.group_id, g.group_name, g2.group_name ". " ORDER BY $args{sortby} $args{sortorder} ". ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage}); my $glist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) ); $errstr = $dbh->errstr if !$glist; # LEFT JOINs make the result set balloon beyond sanity just to include counts; # this means there's lots of crunching needed to trim the result set back down. # So instead we track the order of the groups, and push the counts into the # arrayref result separately. ##fixme: put this whole sub in a transaction? might be # needed for accurate results on very busy systems. ##fixme: large group lists need prepared statements? #my $ucsth = $dbh->prepare("SELECT count(*) FROM users WHERE group_id=?"); #my $dcsth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?"); #my $rcsth = $dbh->prepare("SELECT count(*) FROM revzones WHERE group_id=?"); foreach (@{$glist}) { my ($ucnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($$_{groupid})); $$_{nusers} = $ucnt; my ($dcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($$_{groupid})); $$_{ndomains} = $dcnt; my ($rcnt) = $dbh->selectrow_array("SELECT count(*) FROM revzones WHERE group_id=?", undef, ($$_{groupid})); $$_{nrevzones} = $rcnt; } return $glist; } # end getGroupList ## DNSDB::groupID() # Return the group ID based on the group name # Takes a database handle and the group name # Returns the group ID or undef on failure sub groupID { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $group = shift; my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($group) ); $errstr = $DBI::errstr if !$grpid; return $grpid if $grpid; } # end groupID() ## DNSDB::addUser() # Add a user. # Takes a DB handle, username, group ID, password, state (active/inactive). # Optionally accepts: # user type (user/admin) - defaults to user # permissions string - defaults to inherit from group # three valid forms: # i - Inherit permissions # c: - Clone permissions from # C: - Set these specific permissions # first name - defaults to username # last name - defaults to blank # phone - defaults to blank (could put other data within column def) # Returns (OK,) on success, (FAIL,) on failure sub addUser { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $username = shift; my $group = shift; my $pass = shift; my $state = shift; return ('FAIL', "Missing one or more required entries") if !defined($state); return ('FAIL', "Username must not be blank") if !$username; # Munge in some alternate state values $state = 1 if $state =~ /^active$/; $state = 1 if $state =~ /^on$/; $state = 0 if $state =~ /^inactive$/; $state = 0 if $state =~ /^off$/; my $type = shift || 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs my $permstring = shift || 'i'; # default is to inhert permissions from group my $fname = shift || $username; my $lname = shift || ''; my $phone = shift || ''; # not going format-check my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?"); my $user_id; # quick check to start to see if we've already got one $sth->execute($username); ($user_id) = $sth->fetchrow_array; return ('FAIL', "User already exists") if $user_id; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; # Wrap all the SQL in a transaction eval { # insert the user... note we set inherited perms by default since # it's simple and cleans up some other bits of state ##fixme: need better handling of case of inherited or missing (!!) permissions entries my $sth = $dbh->prepare("INSERT INTO users ". "(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ". "VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')"); $sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group); # get the ID... ($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')"); # Permissions! Gotta set'em all! die "Invalid permission string $permstring\n" if $permstring !~ /^(?: i # inherit |c:\d+ # clone # custom. no, the leading , is not a typo |C:(?:,(?:group|user|domain|record|location|self)_(?:edit|create|delete|locchg|view))* )$/x; # bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already. if ($permstring ne 'i') { # for cloned or custom permissions, we have to create a new permissions entry. my $clonesrc = $group; if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; } $dbh->do("INSERT INTO permissions ($permlist,user_id) ". "SELECT $permlist,? FROM permissions WHERE permission_id=". "(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)", undef, ($user_id,$clonesrc) ); $dbh->do("UPDATE users SET permission_id=". "(SELECT permission_id FROM permissions WHERE user_id=?) ". "WHERE user_id=?", undef, ($user_id, $user_id) ); } if ($permstring =~ /^C:/) { # finally for custom permissions, we set the passed-in permissions (and unset # any that might have been brought in by the clone operation above) my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?", undef, ($user_id) ); foreach (@permtypes) { if ($permstring =~ /,$_/) { $dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) ); } else { $dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) ); } } } $dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) ); ##fixme: add another table to hold name/email for log table? $self->_log(group_id => $group, entry => "Added user $username ($fname $lname)"); # once we get here, we should have suceeded. $dbh->commit; }; # end eval if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $group, entry => "Error adding user $username: $msg"); $dbh->commit; # since we enabled transactions earlier } return ('FAIL',"Error adding user $username: $msg"); } return ('OK',"User $username ($fname $lname) added"); } # end addUser ## DNSDB::getUserCount() # Get count of users in group # Takes a database handle and hash containing at least the current group, and optionally: # - a reference list of secondary groups # - a filter string # - a "Starts with" string sub getUserCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; my $sql = "SELECT count(*) FROM users ". "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND username ~* ?" : ''). ($args{filter} ? " AND username ~* ?" : ''). " AND NOT type = 'R' "; my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) ); $errstr = $dbh->errstr if !$count; return $count; } # end getUserCount() ## DNSDB::getUserList() # Get list of users # Takes the same arguments as getUserCount() above, plus optional: # - sort field # - sort order # - offset/return-all-everything flag (defaults to $perpage records) sub getUserList { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; # better to request sorts on "simple" names, but it means we need to map it to real columns my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status', fname => 'fname'); $args{sortby} = $sortmap{$args{sortby}}; # protection against bad or missing arguments $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{sortby} = 'u.username' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; my $sql = "SELECT u.user_id, u.username, u.firstname || ' ' || u.lastname AS fname, u.type, g.group_name, u.status ". "FROM users u ". "INNER JOIN groups g ON u.group_id=g.group_id ". "WHERE u.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND u.username ~* ?" : ''). ($args{filter} ? " AND u.username ~* ?" : ''). " AND NOT u.type = 'R' ". " ORDER BY $args{sortby} $args{sortorder} ". ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage}); my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) ); $errstr = $dbh->errstr if !$ulist; return $ulist; } # end getUserList() ## DNSDB::getUserDropdown() # Get a list of usernames for use in a dropdown menu. # Takes a database handle, current group, and optional "tag this as selected" flag. # Returns a reference to a list of hashrefs suitable to feeding to HTML::Template sub getUserDropdown { my $self = shift; my $dbh = $self->{dbh}; my $grp = shift; my $sel = shift || 0; my $sth = $dbh->prepare("SELECT username,user_id FROM users WHERE group_id=? AND password <> 'RPC'"); $sth->execute($grp); my @userlist; while (my ($username,$uid) = $sth->fetchrow_array) { my %row = ( username => $username, uid => $uid, selected => ($sel == $uid ? 1 : 0) ); push @userlist, \%row; } return \@userlist; } # end getUserDropdown() ## DNSDB:: updateUser() # Update general data about user sub updateUser { my $self = shift; my $dbh = $self->{dbh}; ##fixme: tweak calling convention so that we can update any given bit of data my $uid = shift; my $username = shift; my $group = shift; my $pass = shift; my $state = shift; my $type = shift || 'u'; my $fname = shift || $username; my $lname = shift || ''; my $phone = shift || ''; # not going format-check my $resultmsg = ''; # Munge in some alternate state values $state = 1 if $state =~ /^active$/; $state = 1 if $state =~ /^on$/; $state = 0 if $state =~ /^inactive$/; $state = 0 if $state =~ /^off$/; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $sth; # Password can be left blank; if so we assume there's one on file. # Actual blank passwords are bad, mm'kay? if (!$pass) { ($pass) = $dbh->selectrow_array("SELECT password FROM users WHERE user_id=?", undef, ($uid)); } else { $pass = unix_md5_crypt($pass); } eval { $dbh->do("UPDATE users SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?". " WHERE user_id=?", undef, ($username, $pass, $fname, $lname, $phone, $type, $state, $uid)); $resultmsg = "Updated user info for $username ($fname $lname)"; $self->_log(group_id => $group, entry => $resultmsg); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $group, entry => "Error updating user $username: $msg"); $dbh->commit; # since we enabled transactions earlier } return ('FAIL',"Error updating user $username: $msg"); } return ('OK',$resultmsg); } # end updateUser() ## DNSDB::delUser() # Delete a user. # Takes a database handle and user ID # Returns a success/failure code and matching message sub delUser { my $self = shift; my $dbh = $self->{dbh}; my $userid = shift; return ('FAIL',"Bad userid") if !defined($userid); my $userdata = $self->getUserData($userid); # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; eval { $dbh->do("DELETE FROM users WHERE user_id=?", undef, ($userid)); $self->_log(group_id => $userdata->{group_id}, entry => "Deleted user ID $userid/".$userdata->{username}. " (".$userdata->{firstname}." ".$userdata->{lastname}.")"); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(group_id => $userdata->{group_id}, entry => "Error deleting user ID ". "$userid/".$userdata->{username}.": $msg"); $dbh->commit; } return ('FAIL',"Error deleting user $userid/".$userdata->{username}.": $msg"); } return ('OK',"Deleted user ".$userdata->{username}." (".$userdata->{firstname}." ".$userdata->{lastname}.")"); } # end delUser ## DNSDB::userFullName() # Return a pretty string! # Takes a user_id and optional printf-ish string to indicate which pieces where: # %u for the username # %f for the first name # %l for the last name # All other text in the passed string will be left as-is. ##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output sub userFullName { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $userid = shift; my $fullformat = shift || '%f %l (%u)'; my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?"); $sth->execute($userid); my ($uname,$fname,$lname) = $sth->fetchrow_array(); $errstr = $DBI::errstr if !$uname; no warnings qw (uninitialized); $fullformat =~ s/\%u/$uname/g; $fullformat =~ s/\%f/$fname/g; $fullformat =~ s/\%l/$lname/g; return $fullformat; } # end userFullName ## DNSDB::userStatus() # Sets and/or returns a user's status # Takes a database handle, user ID and optionally a status argument # Returns undef on errors. sub userStatus { my $self = shift; my $dbh = $self->{dbh}; my $id = shift; my $newstatus = shift || 'mu'; return undef if $id !~ /^\d+$/; my $userdata = $self->getUserData($id); # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; if ($newstatus ne 'mu') { # ooo, fun! let's see what we were passed for status eval { $newstatus = 0 if $newstatus eq 'useroff'; $newstatus = 1 if $newstatus eq 'useron'; $dbh->do("UPDATE users SET status=? WHERE user_id=?", undef, ($newstatus, $id)); $resultstr = ($newstatus ? 'Enabled' : 'Disabled')." user ".$userdata->{username}. " (".$userdata->{firstname}." ".$userdata->{lastname}.")"; my %loghash; $loghash{group_id} = $self->parentID(id => $id, type => 'user'); $loghash{entry} = $resultstr; $self->_log(%loghash); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; $resultstr = ''; $errstr = $msg; ##fixme: failure logging? return; } } my ($status) = $dbh->selectrow_array("SELECT status FROM users WHERE user_id=?", undef, ($id)); return $status; } # end userStatus() ## DNSDB::getUserData() # Get misc user data for display sub getUserData { my $self = shift; my $dbh = $self->{dbh}; my $uid = shift; my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ". "FROM users WHERE user_id=?"); $sth->execute($uid); return $sth->fetchrow_hashref(); } # end getUserData() ## DNSDB::addLoc() # Add a new location. # Takes a database handle, group ID, short and long description, and a comma-separated # list of IP addresses. # Returns ('OK',) on success, ('FAIL',) on failure sub addLoc { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $grp = $args{group}; my $shdesc = $args{desc}; my $comments = $args{comments}; my $iplist = $args{iplist}; # $shdesc gets set to the generated location ID if possible, but these can be de-undefined here. $comments = '' if !$comments; $iplist = '' if !$iplist; # allow requesting a specific location entry. my $loc = $args{loc}; # Generate a location ID. This is, by spec, a two-character widget. We'll use [a-z][a-z] # for now; 676 locations should satisfy all but the largest of the huge networks. # just to be as clear as possible; as per http://cr.yp.to/djbdns/tinydns-data.html: #For versions 1.04 and above: You may include a client location on each line. The line is ignored for clients #outside that location. Client locations are specified by % lines: # # %lo:ipprefix # #means that IP addresses starting with ipprefix are in location lo. lo is a sequence of one or two ASCII letters. # this has been confirmed by experiment; locations "lo", "Lo", and "lO" are all distinct. # add just after "my $origloc = $loc;": # # These expand the possible space from 26^2 to 52^2 [* note in testing only 2052 were achieved], # # and wrap it around. # # Yes, they skip a couple of possibles. No, I don't care. # $loc = 'aA' if $loc eq 'zz'; # $loc = 'Aa' if $loc eq 'zZ'; # $loc = 'ZA' if $loc eq 'Zz'; # $loc = 'aa' if $loc eq 'ZZ'; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; ##fixme: There is probably a far better way to do this. Sequential increments # are marginally less stupid that pure random generation though, and the existence # check makes sure we don't stomp on an imported one. eval { # Get the "last" location. Note this is the only use for loc_id, because selecting on location Does Funky Things my ($newloc) = $dbh->selectrow_array("SELECT location FROM locations ORDER BY loc_id DESC LIMIT 1"); no warnings qw(uninitialized); my $ecnt = $dbh->prepare("SELECT count(*) FROM locations WHERE location LIKE ?"); if ($loc) { $ecnt->execute($loc); if (($ecnt->fetchrow_array())[0]) { # too bad, so sad, requested location is unavailable. ##fixme: known failure case: caller requests a location ID that is not two characters. die "Requested location is already defined\n" if $args{reqonly}; # fall back to autoincrement } $newloc = $loc; } # Either the requested location ID is unavailable and the caller isn't too attached # to it, OR, the caller hasn't specified a location ID. (The second case should be # far more common.) Find the "next available" location identifier. ($newloc) = ($newloc =~ /^(..)/) if $newloc; my $origloc = $newloc; $newloc = 'aa' if !$newloc; # Make a change... # ... and keep changing if it exists while ($dbh->selectrow_array("SELECT count(*) FROM locations WHERE location LIKE ?", undef, ($newloc.'%'))) { $newloc++; ($newloc) = ($newloc =~ /^(..)/); die "too many locations in use, can't add another one\n" if $newloc eq $origloc; ##fixme: really need to handle this case faster somehow #if $loc eq $origloc die " bad admin: all locations used, your network is too fragmented"; } # And now we should have a unique location. $shdesc = $newloc if !$shdesc; $dbh->do("INSERT INTO locations (location, group_id, iplist, description, comments) VALUES (?,?,?,?,?)", undef, ($newloc, $grp, $iplist, $shdesc, $comments) ); $self->_log(entry => "Added location ($shdesc, '$iplist')"); $loc = $newloc; $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $shdesc = $loc if !$shdesc; $self->_log(entry => "Failed adding location ($shdesc, '$iplist'): $msg"); $dbh->commit; } return ('FAIL',$msg); } return ('OK',$loc); } # end addLoc() ## DNSDB::updateLoc() # Update details of a location. # Takes a database handle, location ID, group ID, short description, # long comments/notes, and comma/space-separated IP list # Returns a result code and message sub updateLoc { my $self = shift; my $dbh = $self->{dbh}; my $loc = shift; my $grp = shift; my $shdesc = shift; my $comments = shift; my $iplist = shift; $shdesc = '' if !$shdesc; $comments = '' if !$comments; $iplist = '' if !$iplist; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $oldloc = $self->getLoc($loc); my $okmsg = "Updated location (".$oldloc->{description}.", '".$oldloc->{iplist}."') to ($shdesc, '$iplist')"; eval { $dbh->do("UPDATE locations SET group_id=?,iplist=?,description=?,comments=? WHERE location=?", undef, ($grp, $iplist, $shdesc, $comments, $loc) ); $self->_log(entry => $okmsg); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $shdesc = $loc if !$shdesc; $self->_log(entry => "Failed updating location ($shdesc, '$iplist'): $msg"); $dbh->commit; } return ('FAIL',$msg); } return ('OK',$okmsg); } # end updateLoc() ## DNSDB::delLoc() sub delLoc { my $self = shift; my $dbh = $self->{dbh}; my $loc = shift; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $oldloc = $self->getLoc($loc); my $olddesc = ($oldloc->{description} ? $oldloc->{description} : $loc); my $okmsg = "Deleted location ($olddesc, '".$oldloc->{iplist}."')"; eval { # Check for records with this location first. Deleting a location without deleting records # tagged for that location will render them unpublished without other warning. my ($r) = $dbh->selectrow_array("SELECT record_id FROM records WHERE location=? LIMIT 1", undef, ($loc) ); die "Records still exist in location $olddesc\n" if $r; $dbh->do("DELETE FROM locations WHERE location=?", undef, ($loc) ); $self->_log(entry => $okmsg); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $self->_log(entry => "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg"); $dbh->commit; } return ('FAIL', "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg"); } return ('OK',$okmsg); } # end delLoc() ## DNSDB::getLoc() # Get details about a location/view # Takes a database handle and location ID. # Returns a reference to a hash containing the group ID, IP list, description, and comments/notes sub getLoc { my $self = shift; my $dbh = $self->{dbh}; my $loc = shift; my $sth = $dbh->prepare("SELECT group_id,iplist,description,comments FROM locations WHERE location=?"); $sth->execute($loc); return $sth->fetchrow_hashref(); } # end getLoc() ## DNSDB::getLocCount() # Get count of locations/views # Takes a database handle and hash containing at least the current group, and optionally: # - a reference list of secondary groups # - a filter string # - a "Starts with" string sub getLocCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; my $sql = "SELECT count(*) FROM locations ". "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND description ~* ?" : ''). ($args{filter} ? " AND description ~* ?" : ''); my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) ); $errstr = $dbh->errstr if !$count; return $count; } # end getLocCount() ## DNSDB::getLocList() sub getLocList { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # Fail on bad curgroup argument. There's no sane fallback on this one. if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) { $errstr = "Bad or missing curgroup argument"; return; } # Fail on bad childlist argument. This could be sanely ignored if bad, maybe. if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) { $errstr = "Bad childlist argument"; return; } my @filterargs; $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/; push @filterargs, "^$args{startwith}" if $args{startwith}; push @filterargs, $args{filter} if $args{filter}; # better to request sorts on "simple" names, but it means we need to map it to real columns # my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status', # fname => 'fname'); # $args{sortby} = $sortmap{$args{sortby}}; # protection against bad or missing arguments $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{sortby} = 'l.description' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; my $sql = "SELECT l.location, l.description, l.iplist, g.group_name ". "FROM locations l ". "INNER JOIN groups g ON l.group_id=g.group_id ". "WHERE l.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")". ($args{startwith} ? " AND l.description ~* ?" : ''). ($args{filter} ? " AND l.description ~* ?" : ''). " ORDER BY $args{sortby} $args{sortorder} ". ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage}); my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) ); $errstr = $dbh->errstr if !$ulist; push @{$ulist}, { location => '', description => "(Default/All)", iplist => '', group_name => "All clients"} if $args{full}; return $ulist; } # end getLocList() ## DNSDB::getLocDropdown() # Get a list of location names for use in a dropdown menu. # Takes a database handle, current group, and optional "tag this as selected" flag. # Returns a reference to a list of hashrefs suitable to feeding to HTML::Template sub getLocDropdown { my $self = shift; my $dbh = $self->{dbh}; my $grp = shift; my $sel = shift || ''; my $sth = $dbh->prepare(qq( SELECT description,location FROM locations WHERE group_id=? ORDER BY description ) ); $sth->execute($grp); my @loclist; push @loclist, { locname => "(Default/All)", loc => '', selected => ($sel ? 0 : ($sel eq '' ? 1 : 0)) }; while (my ($locname, $loc) = $sth->fetchrow_array) { my %row = ( locname => $locname, loc => $loc, selected => ($sel eq $loc ? 1 : 0) ); push @loclist, \%row; } return \@loclist; } # end getLocDropdown() ## DNSDB::getSOA() # Return all suitable fields from an SOA record in separate elements of a hash # Takes a database handle, default/live flag, domain/reverse flag, and parent ID sub getSOA { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $def = shift; my $rev = shift; my $id = shift; # (ab)use distance and weight columns to store SOA data? can't for default_rev_records... # - should really attach serial to the zone parent somewhere my $sql = "SELECT record_id,host,val,ttl from "._rectable($def,$rev). " WHERE "._recparent($def,$rev)." = ? AND type=$reverse_typemap{SOA}"; my $ret = $dbh->selectrow_hashref($sql, undef, ($id) ); return if !$ret; ##fixme: stick a flag somewhere if the record doesn't exist. by the API, this is an impossible case, but... ($ret->{contact},$ret->{prins}) = split /:/, $ret->{host}; delete $ret->{host}; ($ret->{refresh},$ret->{retry},$ret->{expire},$ret->{minttl}) = split /:/, $ret->{val}; delete $ret->{val}; my ($ser) = $dbh->selectrow_array("SELECT zserial FROM "._zonetable($def,$rev). " WHERE "._recparent($def,$rev)." = ?", undef, $id); $ret->{serial} = $ser; return $ret; } # end getSOA() ## DNSDB::updateSOA() # Update the specified SOA record # Takes a database handle, default/live flag, forward/reverse flag, and SOA data hash # Returns a two-element list with a result code and message sub updateSOA { my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my %soa = @_; my $oldsoa = $self->getSOA($defrec, $revrec, $soa{id}); my $msg; my %logdata; if ($defrec eq 'n') { $logdata{domain_id} = $soa{id} if $revrec eq 'n'; $logdata{rdns_id} = $soa{id} if $revrec eq 'y'; $logdata{group_id} = $self->parentID(id => $soa{id}, revrec => $revrec, type => ($revrec eq 'n' ? 'domain' : 'revzone') ); } else { $logdata{group_id} = $soa{id}; } my $parname = ($defrec eq 'y' ? $self->groupName($soa{id}) : ($revrec eq 'n' ? $self->domainName($soa{id}) : $self->revName($soa{id})) ); # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; eval { if (!$oldsoa) { # old SOA record is missing for some reason. create a new one. my $sql = "INSERT INTO "._rectable($defrec, $revrec)." ("._recparent($defrec, $revrec). ", host, type, val, ttl) VALUES (?,?,6,?,?)"; $dbh->do($sql, undef, ($soa{id}, "$soa{contact}:$soa{prins}", "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}", $soa{ttl}) ); $msg = ($defrec eq 'y' ? ($revrec eq 'y' ? 'Default reverse ' : 'Default ') : ''). "SOA missing for $parname; added (ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},". " retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})"; } else { my $sql = "UPDATE "._rectable($defrec, $revrec)." SET host=?, val=?, ttl=? WHERE record_id=? AND type=6"; $dbh->do($sql, undef, ("$soa{contact}:$soa{prins}", "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}", $soa{ttl}, $oldsoa->{record_id}) ); $msg = "Updated ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse ' : 'default ') : ''). "SOA for $parname: ". "(ns $oldsoa->{prins}, contact $oldsoa->{contact}, refresh $oldsoa->{refresh},". " retry $oldsoa->{retry}, expire $oldsoa->{expire}, minTTL $oldsoa->{minttl}, TTL $oldsoa->{ttl}) to ". "(ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},". " retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})"; } $self->_updateserial(%logdata); $logdata{entry} = $msg; $self->_log(%logdata); $dbh->commit; }; if ($@) { $msg = $@; eval { $dbh->rollback; }; $logdata{entry} = "Error updating ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse zone ' : 'default ') : ''). "SOA record for $parname: $msg"; if ($self->{log_failures}) { $self->_log(%logdata); $dbh->commit; } return ('FAIL', $logdata{entry}); } else { return ('OK', $msg); } } # end updateSOA() ## DNSDB::getRecLine() # Return all data fields for a zone record in separate elements of a hash # Takes a database handle, default/live flag, forward/reverse flag, and record ID sub getRecLine { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my $id = shift; ##fixme: do we need a knob to twist to switch between unix epoch and postgres time string? my $sql = "SELECT record_id,host,type,val,ttl". ($defrec eq 'n' ? ',location' : ''). ($revrec eq 'n' ? ',distance,weight,port' : ''). (($defrec eq 'y') ? ',group_id FROM ' : ',domain_id,rdns_id,stamp,stamp < now() AS ispast,expires,stampactive FROM '). _rectable($defrec,$revrec)." WHERE record_id=?"; my $ret = $dbh->selectrow_hashref($sql, undef, ($id) ); if ($dbh->err) { $errstr = $DBI::errstr; return undef; } if (!$ret) { $errstr = "No such record"; return undef; } # explicitly set a parent id if ($defrec eq 'y') { $ret->{parid} = $ret->{group_id}; } else { $ret->{parid} = (($revrec eq 'n') ? $ret->{domain_id} : $ret->{rdns_id}); # and a secondary if we have a custom type that lives in both a forward and reverse zone $ret->{secid} = (($revrec eq 'y') ? $ret->{domain_id} : $ret->{rdns_id}) if $ret->{type} > 65279; } $ret->{address} = $ret->{val}; # because. return $ret; } ##fixme: should use above (getRecLine()) to get lines for below? ## DNSDB::getRecList() # Return records for a group or zone # Takes a default/live flag, group or zone ID, start, # number of records, sort field, and sort order # Returns a reference to an array of hashes sub getRecList { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my %args = @_; $args{revrec} = 'n' if !$args{revrec}; $args{defrec} = 'n' if !$args{defrec}; # RPC callers generally want the "true" IP. Flag argument for those to bypass showrev_arpa ##fixme: this will still blow up if some idiot has actually stored .arpa names in the DB. # ... do we care? $args{rpc} = 0 if !$args{rpc}; # protection against bad or missing arguments $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); my $defsort; $defsort = 'host' if $args{revrec} eq 'n'; # default sort by host on domain record list $defsort = 'val' if $args{revrec} eq 'y'; # default sort by IP on revzone record list $args{sortby} = '' if !$args{sortby}; $args{sortby} = $defsort if !$args{revrec}; $args{sortby} = $defsort if $args{sortby} !~ /^[\w_,.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; my $perpage = ($args{nrecs} ? $args{nrecs} : $self->{perpage}); ##fixme: do we need a knob to twist to switch from unix epoch to postgres time string? my @bindvars; my $sql = "SELECT r.record_id,"; # only include the parent info if we don't already know which parent we're in $sql .= "r.domain_id,r.rdns_id," unless $args{id}; $sql .= "r.host,r.type,r.val,r.ttl"; $sql .= ",l.description AS locname,stamp,r.stamp < now() AS ispast,r.expires,r.stampactive" if $args{defrec} eq 'n'; $sql .= ",r.distance,r.weight,r.port" if $args{revrec} eq 'n'; $sql .= " FROM "._rectable($args{defrec},$args{revrec})." r "; $sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically $sql .= "LEFT JOIN locations l ON r.location=l.location " if $args{defrec} eq 'n'; $sql .= "WHERE NOT r.type=$reverse_typemap{SOA}"; # "normal" record list if ($args{id}) { $sql .= " AND "._recparent($args{defrec},$args{revrec})." = ?"; push @bindvars, $args{id}; } # Filtering on host/val (mainly normal record list) if ($args{filter}) { _recfilter(filter => $args{filter}, sql => \$sql, bindvars => \@bindvars); } # Filtering on other fields foreach (qw(type distance weight port ttl description location)) { if ($args{$_}) { $sql .= " AND r.$_ ~* ?"; push @bindvars, $args{$_}; } } # whee! multisort means just passing comma-separated fields in sortby! my $newsort = ''; foreach my $sf (split /,/, $args{sortby}) { $sf = "r.$sf"; # sort on IP, correctly $sf =~ s/r\.val/inetlazy(r.val)/; # hmm. do we really need to limit this? # if $args{revrec} eq 'y' && $args{defrec} eq 'n'; $sf =~ s/r\.type/t.alphaorder/; # subtly different from sorting on rectypes.name $newsort .= ",$sf"; } $newsort =~ s/^,//; ##enhance: pass in ascending/descending sort per-field $sql .= " ORDER BY $newsort $args{sortorder}"; # ensure consistent ordering by sorting on record_id too $sql .= ", record_id $args{sortorder}"; # Offset/pagination $sql .= ($args{offset} eq 'all' ? '' : " LIMIT $perpage OFFSET ".$args{offset}*$perpage); my @working; my $recsth = $dbh->prepare($sql); $recsth->execute(@bindvars); while (my $rec = $recsth->fetchrow_hashref) { if (!$args{rpc} && $args{revrec} eq 'y' && $args{defrec} eq 'n' && ($self->{showrev_arpa} eq 'record' || $self->{showrev_arpa} eq 'all') && $rec->{val} !~ /\.arpa$/ ) { # skip all reverse zone .arpa "hostnames" since they're already .arpa names. ##enhance: extend {showrev_arpa} eq 'record' to specify record types my $tmpip = new NetAddr::IP $rec->{val} if $rec->{val} =~ /^(?:[\d.\/]+|[a-fA-F0-9:\/]+)$/; $rec->{val} = DNSDB::_ZONE($tmpip, 'ZONE', 'r', '.').($tmpip->{isv6} ? '.ip6.arpa' : '.in-addr.arpa') if $tmpip; } push @working, $rec; } return \@working; } # end getRecList() ## DNSDB::getRecCount() # Return count of non-SOA records in zone (or default records in a group) # Takes a database handle, default/live flag, reverse/forward flag, group/domain ID, # and optional filtering modifier # Returns the count sub getRecCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; $args{defrec} = 'n' if !$args{defrec}; $args{revrec} = 'n' if !$args{revrec}; my @bindvars; my $sql = "SELECT count(*) FROM ". _rectable($args{defrec},$args{revrec}). " r WHERE NOT type=$reverse_typemap{SOA}"; if ($args{id}) { $sql .= " AND "._recparent($args{defrec},$args{revrec})." = ?"; push @bindvars, $args{id}; } # Filtering on host/val (mainly normal record list) if ($args{filter}) { _recfilter(filter => $args{filter}, sql => \$sql, bindvars => \@bindvars); } # Filtering on other fields foreach (qw(type distance weight port ttl description)) { if ($args{$_}) { $sql .= " AND $_ ~* ?"; push @bindvars, $args{$_}; } } my ($count) = $dbh->selectrow_array($sql, undef, (@bindvars) ); return $count; } # end getRecCount() ## DNSDB::addRec() # Add a new record to a domain or a group's default records # Takes a database handle, default/live flag, group/domain ID, # host, type, value, and TTL # Some types require additional detail: "distance" for MX and SRV, # and weight/port for SRV # Returns a status code and detail message in case of error ##fixme: pass a hash with the record data, not a series of separate values sub addRec { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my $id = shift; # parent (group_id for defrecs, rdns_id for reverse records, # domain_id for domain records) my $host = shift; my $rectype = shift; # reference so we can coerce it if "+"-types can't find both zones my $val = shift; my $ttl = shift; my $location = shift; $location = '' if !$location; my $expires = shift || ''; $expires = 1 if $expires eq 'until'; # Turn some special values into the appropriate booleans. $expires = 0 if $expires eq 'after'; my $stamp = shift; $stamp = '' if !$stamp; # Timestamp should be a string at this point. # extra safety net - apparently RPC can squeak this by. O_o return ('FAIL', "host must contain a value") if !$$host; return ('FAIL', "val must contain a value") if !$$val; return ('FAIL', "expires must be 1, 't', or 'until', or 0, 'f', or 'after'") if ($stamp && !$expires) || ($stamp && $expires ne '0' && $expires ne '1' && $expires ne 't' && $expires ne 'f'); # Spaces are evil. $$host =~ s/^\s+//; $$host =~ s/\s+$//; if ($typemap{$$rectype} ne 'TXT') { # Leading or trailng spaces could be legit in TXT records. $$val =~ s/^\s+//; $$val =~ s/\s+$//; } _caseclean($rectype, $host, $val, $defrec, $revrec) if $self->{lowercase}; # prep for validation my $addr = NetAddr::IP->new($$val) if _maybeip($val); $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI. my $domid = 0; my $revid = 0; my $retcode = 'OK'; # assume everything will go OK my $retmsg = ''; # do simple validation first $ttl = '' if !$ttl; $ttl =~ s/\s*//g; return ('FAIL', "TTL must be numeric") unless $ttl =~ /^-?\d+$/; # Collect these even if we're only doing a simple A record so we can call *any* validation sub my $dist = shift; my $weight = shift; my $port = shift; my $fields; my @vallist; # Call the validation sub for the type requested. ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec, id => $id, host => $host, rectype => $rectype, val => $val, addr => $addr, dist => \$dist, port => \$port, weight => \$weight, fields => \$fields, vallist => \@vallist); return ($retcode,$retmsg) if $retcode eq 'FAIL'; # Set up database fields and bind parameters $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec); push @vallist, ($$host,$$rectype,$$val,$ttl,$id); if ($defrec eq 'n') { # locations are not for default records, silly coder! $fields .= ",location"; push @vallist, $location; # timestamps are rare. if ($stamp) { $fields .= ",stamp,expires,stampactive"; push @vallist, $stamp, $expires, 'y'; } else { $fields .= ",stampactive"; push @vallist, 'n'; } } # a little magic to get the right number of ? placeholders based on how many values we're providing my $vallen = '?'.(',?'x$#vallist); # Put together the success log entry. We have to use this horrible kludge # because domain_id and rdns_id may or may not be present, and if they are, # they're not at a guaranteed consistent index in the array. wheee! my %logdata; my @ftmp = split /,/, $fields; for (my $i=0; $i <= $#vallist; $i++) { $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id'; $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id'; } $logdata{group_id} = $id if $defrec eq 'y'; $logdata{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) if $defrec eq 'n'; $logdata{entry} = "Added ".($defrec eq 'y' ? 'default record' : 'record'); # Log reverse records to match the formal .arpa tree if ($revrec eq 'y') { $logdata{entry} .= " '$$val $typemap{$$rectype} $$host"; } else { $logdata{entry} .= " '$$host $typemap{$$rectype} $$val"; } $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX'; $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$$rectype} eq 'SRV'; $logdata{entry} .= "', TTL $ttl"; $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location; $logdata{entry} .= ($expires ? ', expires at ' : ', valid after ').$stamp if $stamp; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $retid; eval { ($retid) = $dbh->selectrow("INSERT INTO "._rectable($defrec, $revrec)." ($fields) VALUES ($vallen) RETURNING record_id", undef, @vallist ) || 'Falsey ID returned'; $self->_updateserial(%logdata); $self->_log(%logdata); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $logdata{entry} = "Failed adding ".($defrec eq 'y' ? 'default ' : ''). "record '$$host $typemap{$$rectype} $$val', TTL $ttl ($msg)"; $self->_log(%logdata); $dbh->commit; } return ('FAIL',$msg); } $resultstr = $logdata{entry}; return ($retcode, $retmsg, $retid); } # end addRec() ## DNSDB::updateRec() # Update a record # Takes a database handle, default and reverse flags, record ID, immediate parent ID, and new record data. # Returns a status code and message sub updateRec { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my $id = shift; my $parid = shift; # immediate parent entity that we're descending from to update the record # all records have these my $host = shift; my $hostbk = $$host; # Keep a backup copy of the original, so we can WARN if the update mangles the domain my $rectype = shift; my $val = shift; my $ttl = shift; my $location = shift; # may be empty/null/undef depending on caller $location = '' if !$location; my $expires = shift || ''; $expires = 1 if $expires eq 'until'; # Turn some special values into the appropriate booleans. $expires = 0 if $expires eq 'after'; my $stamp = shift; $stamp = '' if !$stamp; # Timestamp should be a string at this point. # just set it to an empty string; failures will be caught later. $$host = '' if !$$host; return ('FAIL', "expires must be 1, 't', or 'until', or 0, 'f', or 'after'") if ($stamp && !$expires) || ($stamp && $expires ne '0' && $expires ne '1' && $expires ne 't' && $expires ne 'f'); # Spaces are evil. $$host =~ s/^\s+//; $$host =~ s/\s+$//; if ($typemap{$$rectype} ne 'TXT') { # Leading or trailng spaces could be legit in TXT records. $$val =~ s/^\s+//; $$val =~ s/\s+$//; } _caseclean($rectype, $host, $val, $defrec, $revrec) if $self->{lowercase}; # prep for validation my $addr = NetAddr::IP->new($$val) if _maybeip($val); $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI. my $domid = 0; my $revid = 0; my $retcode = 'OK'; # assume everything will go OK my $retmsg = ''; # do simple validation first $ttl = '' if !$ttl; $ttl =~ s/\s*//g; return ('FAIL', "TTL must be numeric") unless $ttl =~ /^-?\d+$/; # only MX and SRV will use these my $dist = shift || 0; my $weight = shift || 0; my $port = shift || 0; my $fields; my @vallist; # get old record data so we have the right parent ID # and for logging (eventually) my $oldrec = $self->getRecLine($defrec, $revrec, $id); # Call the validation sub for the type requested. # Note the ID to pass here is the *parent*, not the record ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec, id => ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})), host => $host, rectype => $rectype, val => $val, addr => $addr, dist => \$dist, port => \$port, weight => \$weight, fields => \$fields, vallist => \@vallist, update => $id); return ($retcode,$retmsg) if $retcode eq 'FAIL'; # Set up database fields and bind parameters. Note only the optional fields # (distance, weight, port, secondary parent ID) are added in the validation call above $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec); push @vallist, ($$host,$$rectype,$$val,$ttl, ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})) ); if ($defrec eq 'n') { # locations are not for default records, silly coder! $fields .= ",location"; push @vallist, $location; # timestamps are rare. if ($stamp) { $fields .= ",stamp,expires,stampactive"; push @vallist, $stamp, $expires, 'y'; } else { $fields .= ",stampactive"; push @vallist, 'n'; } } # hack hack PTHUI # need to forcibly make sure we disassociate a record with a parent it's no longer related to. # eg, PTR records may not have a domain parent, or A/AAAA records may not have a revzone parent. # needed for crossover types that got coerced down to "standard" types due to data changes # need to *avoid* funky records being updated like A/AAAA records in revzones, or PTRs in forward zones. if ($defrec eq 'n' && $oldrec->{type} > 65000) { if ($$rectype == $reverse_typemap{PTR}) { $fields .= ",domain_id"; push @vallist, 0; } if ($$rectype == $reverse_typemap{A} || $$rectype == $reverse_typemap{AAAA}) { $fields .= ",rdns_id"; push @vallist, 0; } } # fix fat-finger-originated record type changes if ($$rectype == 65285) { # delegation $fields .= ",rdns_id" if $revrec eq 'n'; $fields .= ",domain_id" if $revrec eq 'y'; push @vallist, 0; } # ... and now make sure we *do* associate a record with the "calling" parent if ($defrec eq 'n') { $domid = $parid if $revrec eq 'n'; $revid = $parid if $revrec eq 'y'; } # Put together the success log entry. Horrible kludge from addRec() copied as-is since # we don't know whether the passed arguments or retrieved values for domain_id and rdns_id # will be maintained (due to "not-in-zone" validation changes) my %logdata; $logdata{domain_id} = $domid; $logdata{rdns_id} = $revid; my @ftmp = split /,/, $fields; for (my $i=0; $i <= $#vallist; $i++) { $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id'; $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id'; } $logdata{group_id} = $parid if $defrec eq 'y'; $logdata{group_id} = $self->parentID(id => $parid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) if $defrec eq 'n'; $logdata{entry} = "Updated ".($defrec eq 'y' ? 'default record' : 'record')." from\n"; # Log reverse records "naturally", since they're stored, um, unnaturally. if ($revrec eq 'y') { $logdata{entry} .= " '$oldrec->{val} $typemap{$oldrec->{type}} $oldrec->{host}"; } else { $logdata{entry} .= " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}"; } $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX'; $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]" if $typemap{$oldrec->{type}} eq 'SRV'; $logdata{entry} .= "', TTL $oldrec->{ttl}"; $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location}; $logdata{entry} .= ($oldrec->{expires} ? ', expires at ' : ', valid after ').$oldrec->{stamp} if $oldrec->{stampactive}; $logdata{entry} .= "\nto\n"; # Log reverse records "naturally", since they're stored, um, unnaturally. if ($revrec eq 'y') { $logdata{entry} .= "'$$val $typemap{$$rectype} $$host"; } else { $logdata{entry} .= "'$$host $typemap{$$rectype} $$val"; } $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX'; $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$$rectype} eq 'SRV'; $logdata{entry} .= "', TTL $ttl"; $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location; $logdata{entry} .= ($expires ? ', expires at ' : ', valid after ').$stamp if $stamp; local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; # Fiddle the field list into something suitable for updates $fields =~ s/,/=?,/g; $fields .= "=?"; eval { $dbh->do("UPDATE "._rectable($defrec,$revrec)." SET $fields WHERE record_id=?", undef, (@vallist, $id) ); $self->_updateserial(%logdata); $self->_log(%logdata); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $logdata{entry} = "Failed updating ".($defrec eq 'y' ? 'default ' : ''). "record '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)"; $self->_log(%logdata); $dbh->commit; } return ('FAIL', $msg); } $resultstr = $logdata{entry}; return ($retcode, $retmsg); } # end updateRec() ## DNSDB::downconvert() # A mostly internal (not exported) semiutilty sub to downconvert from pseudotype # to a compatible component type. Only a handful of operations are valid, anything # else is a null-op. # Takes the record ID and the new type. Returns boolean. sub downconvert { my $self = shift; my $dbh = $self->{dbh}; my $recid = shift; my $newtype = shift; # also, only work on live records; little to no value trying to do this on default records. my $rec = $self->getRecLine('n', 'y', $recid); # hm? #return 1 if !$rec; return 1 if $rec->{type} < 65000; # Only the reverse-record pseudotypes can be downconverted return 1 if $rec->{type} == 65282; # Nowhere to go my $delpar; my @sqlargs; if ($rec->{type} == 65280) { return 1 if $newtype != 1 && $newtype != 12; $delpar = ($newtype == 1 ? 'rdns_id' : 'domain_id'); push @sqlargs, 0, $newtype, $recid; } elsif ($rec->{type} == 65281) { return 1 if $newtype != 28 && $newtype != 12; $delpar = ($newtype == 28 ? 'rdns_id' : 'domain_id'); push @sqlargs, 0, $newtype, $recid; } elsif ($rec->{type} == 65283) { return 1 if $newtype != 65282; $delpar = 'rdns_id'; } elsif ($rec->{type} == 65284) { return 1 if $newtype != 65282; $delpar = 'rdns_id'; } else { # Your llama is on fire. } local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; eval { $dbh->do("UPDATE records SET $delpar = ?, type = ? WHERE record_id = ?", undef, @sqlargs); # we have no %logdata in this sub $self->_updateserial(domain_id => $rec->{domain_id}, rdns_id => $rec->{rdns_id}); $self->_log(domain_id => $rec->{domain_id}, rdns_id => $rec->{rdns_id}, group_id => $self->parentID(id => $rec->{rdns_id}, type => 'revzone', revrec => 'y'), entry => "'$rec->{host} $typemap{$rec->{type}} $rec->{val}' downconverted to ". "'$rec->{host} $typemap{$newtype} $rec->{val}'"); $dbh->commit; }; if ($@) { $errstr = $@; eval { $dbh->rollback; }; return 0; } return 1; } # end downconvert() ## DNSDB::delRec() # Delete a record. # Takes a default/live flag, forward/reverse flag, and the ID of the record to delete. sub delRec { $errstr = ''; my $self = shift; my $dbh = $self->{dbh}; my $defrec = shift; my $revrec = shift; my $id = shift; my $oldrec = $self->getRecLine($defrec, $revrec, $id); # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; # Put together the log entry my %logdata; $logdata{domain_id} = $oldrec->{domain_id}; $logdata{rdns_id} = $oldrec->{rdns_id}; $logdata{group_id} = $oldrec->{group_id} if $defrec eq 'y'; $logdata{group_id} = $self->parentID(id => ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id}), type => 'domain', revrec => $revrec) if $defrec eq 'n'; $logdata{entry} = "Deleted ".($defrec eq 'y' ? 'default record ' : 'record '). "'$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}"; $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX'; $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]" if $typemap{$oldrec->{type}} eq 'SRV'; $logdata{entry} .= "', TTL $oldrec->{ttl}"; $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location}; eval { $dbh->do("DELETE FROM "._rectable($defrec,$revrec)." WHERE record_id=?", undef, ($id)); $self->_updateserial(%logdata); $self->_log(%logdata); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; if ($self->{log_failures}) { $logdata{entry} = "Error deleting ".($defrec eq 'y' ? 'default record' : 'record'). " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)"; $self->_log(%logdata); $dbh->commit; } return ('FAIL', $msg); } return ('OK',$logdata{entry}); } # end delRec() ## DNSDB::getLogCount() # Get a count of log entries # Takes a database handle and a hash containing at least: # - Entity identifier and entity type as the primary log "slice" sub getLogCount { my $self = shift; return $self->getLogEntries(@_, count => 1); } # end getLogCount() ## DNSDB::getLogEntries() # Get a list of log entries # Takes arguments as with getLogCount() above, plus optional: # - "count" flag # OR # - sort field # - sort order # - offset for pagination sub getLogEntries { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my @filterargs; # fail if the prime id type is missing or invalid $errstr = "Missing primary log slice type"; return if !$args{logtype}; $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui $args{logtype} = 'domain' if $args{logtype} eq 'dom'; # hack pthui $errstr = "Invalid primary log slice type"; return if !grep /^$args{logtype}$/, ('group', 'domain', 'revzone', 'user'); # fail if we don't have a prime ID to look for log entries for $errstr = "Missing ID for primary log slice"; return if !($args{id} || $args{fname}); # Sorting defaults $args{sortorder} = 'DESC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{sortby} = 'stamp' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; my %sortmap = (fname => 'name', username => 'email', entry => 'entry', stamp => 'stamp', revzone => 'revnet', domain => 'domain'); $args{sortby} = $sortmap{$args{sortby}}; push @filterargs, $args{filter} if $args{filter}; my $sql; if ($args{count}) { $sql = "SELECT count(*) FROM log l "; } else { $sql = "SELECT l.log_id AS logparent, l.user_id AS userid, l.name AS userfname, d.domain, l.domain_id, ". "r.revnet AS revzone, ". "l.rdns_id, l.entry AS logentry, date_trunc('second',l.stamp) AS logtime ". "FROM log l ". "LEFT JOIN domains d ON l.domain_id = d.domain_id ". "LEFT JOIN revzones r ON l.rdns_id = r.rdns_id "; } # decide which ID argument to use. Only use the "full name" if no normal ID is present my $idarg; if ($args{id}) { $sql .= "WHERE l.$id_col{$args{logtype}} = ? "; $idarg = $args{id}; } else { $sql .= "WHERE l.name = ? "; $idarg = $args{fname}; } # trim log "subentries" - we'll figure out where to stash these later $sql .= " AND logparent = 0"; # add the entry filter, if any $sql .= ($args{filter} ? " AND entry ~* ?" : ''); # Limit scope based on group. Mainly useful for ltype==user, so subgroup # users can see what the deities in parent groups have done to their domains. if ($args{group} != 1) { my @grouplist; $self->getChildren($args{group}, \@grouplist); my $groupset = join(',', $args{group}, @grouplist); $sql .= " AND l.group_id IN ($groupset)"; } if ($args{count}) { my ($count) = $dbh->selectrow_array($sql, undef, ($idarg, @filterargs) ); $errstr = $dbh->errstr if !$count; return $count; } else { $sql .= " ORDER BY $args{sortby} $args{sortorder}, log_id $args{sortorder}". ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage}); my @loglist; my $sth = $dbh->prepare($sql); my $logchild = $dbh->prepare("SELECT entry FROM log WHERE logparent = ? ORDER BY log_id"); $sth->execute($idarg, @filterargs); while (my $row = $sth->fetchrow_hashref) { $logchild->execute($row->{logparent}); my $childlist = $logchild->fetchall_arrayref({}); $row->{childentries} = $childlist; push @loglist, $row; } return \@loglist; } # Your llama is on fire } # end getLogEntries() # a collection of joins for the record search our $recsearchsqlbase = q( FROM records r LEFT JOIN domains d ON r.domain_id = d.domain_id LEFT JOIN groups g1 ON d.group_id = g1.group_id LEFT JOIN revzones z ON r.rdns_id = z.rdns_id LEFT JOIN groups g2 on z.group_id = g2.group_id JOIN rectypes t ON r.type = t.val LEFT JOIN locations l ON r.location = l.location WHERE r.type <> 6); ## DNSDB::recSearchCount() # Get a total count for a global record search # Takes a hash with the search string and the login group of the user sub recSearchCount { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $sql = "SELECT count(*)".$recsearchsqlbase; my @bindargs; _recfilter(filter => $args{searchfor}, sql => \$sql, bindvars => \@bindargs); # Limit scope based on group if ($args{group} != 1) { my @grouplist; $self->getChildren($args{group}, \@grouplist); my $groupset = join(',', $args{group}, @grouplist); # oh my aching HEAD. there has to be a better way to do conditions on joined tables... $sql .= "AND ( (g1.group_id IN ($groupset) AND g2.group_id IN ($groupset)) OR (g1.group_id IN ($groupset) AND g2.group_id IS NULL) OR (g1.group_id IS NULL AND g2.group_id IN ($groupset)) ) "; } my $count = $dbh->selectrow_array($sql, undef, @bindargs); $errstr = $dbh->errstr if !$count; return $count; } # end recSearchCount() ## DNSDB::recSearch() # Find records matching the search string # Takes a hash with the search string, login group of the user, pagination offset, sort field, # and sort direction # Returns a reference to a list of hashrefs sub recSearch { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; my $sql = q(SELECT r.domain_id, d.domain, g1.group_name AS domgroup, r.rdns_id, z.revnet AS revzone, g2.group_name AS revgroup, r.host, t.name AS rectype, r.val, l.description AS location, r.record_id). $recsearchsqlbase; my @bindargs; _recfilter(filter => $args{searchfor}, sql => \$sql, bindvars => \@bindargs); # Limit scope based on group if ($args{group} != 1) { my @grouplist; $self->getChildren($args{group}, \@grouplist); my $groupset = join(',', $args{group}, @grouplist); # oh my aching HEAD. there has to be a better way to do conditions on joined tables... $sql .= "AND ( (g1.group_id IN ($groupset) AND g2.group_id IN ($groupset)) OR (g1.group_id IN ($groupset) AND g2.group_id IS NULL) OR (g1.group_id IS NULL AND g2.group_id IN ($groupset)) ) "; } # mixed tables means this isn't a simple prefix like the regular record list filter. :/ my %sortmap = ( domain => 'd.domain', revzone => 'z.revnet', host => 'r.host', type => 't.name', val => 'inetlazy(r.val)', location => 'r.location', ); # Sorting defaults $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC'); $args{sortby} = 'r.host' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/; $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/; $args{sortby} = $sortmap{$args{sortby}} if $args{sortby} !~ /\./; # Add sort and offset to SQL $sql .= "ORDER BY $args{sortby} $args{sortorder},record_id ASC\n"; $sql .= ($args{offset} eq 'all' ? '' : "LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage}); ##fixme: should probably sent the warning somewhere else my $ret = $dbh->selectall_arrayref($sql, { Slice => {} }, @bindargs) or warn $dbh->errstr; return $ret; } # end recSearch() ## DNSDB::getRevPattern() # Get the narrowest template pattern applicable to a passed CIDR address (may be a netblock or an IP) sub getRevPattern { my $self = shift; my $dbh = $self->{dbh}; my $cidr = shift; my %args = @_; $args{group} = 1 if !$args{group}; # just in case $args{location} = '' if !$args{location}; # for speed! Casting and comparing even ~7K records takes ~2.5s, so narrow it down to one revzone first. my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >>= ?", undef, ($cidr) ); ##fixme? may need to narrow things down more by octet-chopping and doing text comparisons before casting. my ($revpatt) = $dbh->selectrow_array("SELECT host FROM records ". "WHERE (type in (12,65280,65281,65282,65283,65284)) AND rdns_id = ? ". "AND location = ? AND inetlazy(val) >>= ? ". "ORDER BY inetlazy(val) DESC LIMIT 1", undef, ($revid, $args{location}, $cidr) ); return $revpatt; } # end getRevPattern() ## DNSDB::getRevSet() # Return the unique per-IP reverse hostnames, if any, for the passed # CIDR address (may be a netblock or an IP) sub getRevSet { my $self = shift; my $dbh = $self->{dbh}; my $cidr = shift; my %args = @_; $args{group} = 1 if !$args{group}; # just in case $args{location} = '' if !$args{location}; # for speed! Casting and comparing even ~7K records takes ~2.5s, so narrow it down to one revzone first. my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >>= ?", undef, ($cidr) ); $cidr = new NetAddr::IP $cidr; if ($cidr->num > 256) { # should also catch v6! # Even reverse entries for a v4 /24 of IPs is a bit much. I don't expect # there to be a sane reason to retrive more than a /27 at once, really. # v6 is going to be hairy no matter how you slice it. $errstr = "Reverse hostname detail range too large"; return; } my $sth = $dbh->prepare("SELECT val, host FROM records ". "WHERE (type in (12,65280,65281,65282,65283,65284)) AND rdns_id = ? AND location = ? AND inetlazy(val) = ?"); my @ret; foreach my $ip (@{$cidr->splitref()}) { $sth->execute($revid, $args{location}, $ip); my @data = $sth->fetchrow_array(); my %row; if (@data) { $row{r_ip} = $data[0]; $row{iphost} = $data[1]; } else { $row{r_ip} = $ip->addr; $row{iphost} = ''; } push @ret, \%row; } return \@ret; } # end getRevSet() ## DNSDB::getTypelist() # Get a list of record types for various UI dropdowns # Takes database handle, forward/reverse/lookup flag, and optional "tag as selected" indicator (defaults to A) # Returns an arrayref to list of hashrefs perfect for HTML::Template sub getTypelist { my $self = shift; my $dbh = $self->{dbh}; my $recgroup = shift; my $type = shift || $reverse_typemap{A}; # also accepting $webvar{revrec}! $recgroup = 'f' if $recgroup eq 'n'; $recgroup = 'r' if $recgroup eq 'y'; my $sql = "SELECT val,name FROM rectypes WHERE "; if ($recgroup eq 'r') { # reverse zone types $sql .= "stdflag=2 OR stdflag=3"; } elsif ($recgroup eq 'l') { # DNS lookup types. Note we avoid our custom types >= 65280, since those are entirely internal. $sql .= "(stdflag=1 OR stdflag=2 OR stdflag=3) AND val < 65280"; } else { # default; forward zone types. technically $type eq 'f' but not worth the error message. $sql .= "stdflag=1 OR stdflag=2"; $sql .= " AND val < 65280" if $recgroup eq 'fo'; # An extra flag to trim off the pseudotypes as well. } $sql .= " ORDER BY listorder"; my $sth = $dbh->prepare($sql); $sth->execute; my @typelist; # track whether the passed type is in the list at all. allows you to edit a record # that wouldn't otherwise be generally available in that zone (typically, reverse zones) # without changing its type (accidentally or otherwise) my $selflag = 0; while (my ($rval,$rname) = $sth->fetchrow_array()) { my %row = ( recval => $rval, recname => $rname ); if ($rval == $type) { $row{tselect} = 1; $selflag = 1; } push @typelist, \%row; } # add the passed type if it wasn't in the list if (!$selflag) { my %row = ( recval => $type, recname => $typemap{$type}, tselect => 1 ); push @typelist, \%row; } # Add SOA on lookups since it's not listed in other dropdowns. if ($recgroup eq 'l') { my %row = ( recval => $reverse_typemap{SOA}, recname => 'SOA' ); $row{tselect} = 1 if $reverse_typemap{SOA} == $type; push @typelist, \%row; } return \@typelist; } # end getTypelist() ## DNSDB::parentID() # Get ID of entity that is nearest parent to requested id # Takes a database handle and a hash of entity ID, entity type, optional parent type flag # (domain/reverse zone or group), and optional default/live and forward/reverse flags # Returns the ID or undef on failure sub parentID { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; # clean up defrec and revrec. default to live record, forward zone $args{defrec} = 'n' if !$args{defrec}; $args{revrec} = 'n' if !$args{revrec}; # clean up the parent-type. Set it to group if not set $args{partype} = 'group' if !$args{partype}; # allow callers to be lazy with type $args{type} = 'revzone' if $args{type} eq 'domain' && $args{revrec} eq 'y'; if ($par_type{$args{partype}} eq 'domain' || $par_type{$args{partype}} eq 'revzone') { # only live records can have a domain/zone parent return unless ($args{type} eq 'record' && $args{defrec} eq 'n'); my $result = $dbh->selectrow_hashref("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id'). " FROM records WHERE record_id = ?", undef, ($args{id}) ) or return; return $result; } else { # snag some arguments that will either fall through or be overwritten to save some code duplication my $tmpid = $args{id}; my $type = $args{type}; if ($type eq 'record' && $args{defrec} eq 'n') { # Live records go through the records table first. ($tmpid) = $dbh->selectrow_array("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id'). " FROM records WHERE record_id = ?", undef, ($args{id}) ) or return; $type = ($args{revrec} eq 'n' ? 'domain' : 'revzone'); } my ($result) = $dbh->selectrow_array("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?", undef, ($tmpid) ); return $result; } # should be impossible to get here with even remotely sane arguments return; } # end parentID() ## DNSDB::isParent() # Returns true if $id1 is a parent of $id2, false otherwise sub isParent { my $self = shift; my $dbh = $self->{dbh}; my $id1 = shift; my $type1 = shift; my $id2 = shift; my $type2 = shift; ##todo: immediate, secondary, full (default) # Return false on invalid types return 0 if !grep /^$type1$/, ('record','defrec','defrevrec','user','domain','revzone','group'); return 0 if !grep /^$type2$/, ('record','defrec','defrevrec','user','domain','revzone','group'); # Return false on impossible relations return 0 if $type1 eq 'record'; # nothing may be a child of a record return 0 if $type1 eq 'defrec'; # nothing may be a child of a record return 0 if $type1 eq 'defrevrec'; # nothing may be a child of a record return 0 if $type1 eq 'user'; # nothing may be child of a user return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record return 0 if $type1 eq 'revzone' && $type2 ne 'record';# reverse zone may not be a parent of anything other than a record # ennnhhhh.... if we're passed an id of 0, it will never be found. usual # case would be the UI creating a new , and so we don't have an ID for # to look up yet. in that case the UI should check the parent as well. return 0 if $id1 == 0; # nothing can have a parent id of 0 return 1 if $id2 == 0; # anything could have a child id of 0 (or "unknown") # group 1 is the ultimate root parent return 1 if $type1 eq 'group' && $id1 == 1; # groups are always (a) parent of themselves return 1 if $type1 eq 'group' && $type2 eq 'group' && $id1 == $id2; my $id = $id2; my $type = $type2; my $foundparent = 0; # Records are the only entity with two possible parents. We need to split the parent checks on # domain/rdns. if ($type eq 'record') { my ($dom,$rdns) = $dbh->selectrow_array("SELECT domain_id,rdns_id FROM records WHERE record_id=?", undef, ($id)); # check immediate parent against request return 1 if $type1 eq 'domain' && $id1 == $dom; return 1 if $type1 eq 'revzone' && $id1 == $rdns; # if request is group, check *both* parents. Only check if the parent is nonzero though. return 1 if $dom && $self->isParent($id1, $type1, $dom, 'domain'); return 1 if $rdns && $self->isParent($id1, $type1, $rdns, 'revzone'); # exit here since we've executed the loop below by proxy in the above recursive calls. return 0; } # almost the same loop as getParents() above my $limiter = 0; while (1) { my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?"; my $result = $dbh->selectrow_hashref($sql, undef, ($id) ); if (!$result) { $limiter++; ##fixme: how often will this happen on a live site? fail at max limiter ? # 2013/10/22 only seems to happen when you request an entity that doesn't exist. warn "no results looking for $sql with id $id (depth $limiter)\n"; last; } if ($result && $result->{$par_col{$type}} == $id1) { $foundparent = 1; last; } else { ##fixme: do we care about trying to return a "no such record/domain/user/group" error? # should be impossible to create an inconsistent DB just with API calls. warn $dbh->errstr." $sql, $id" if $dbh->errstr; } # group 1 is its own parent. need this here more to break strange loops than for detecting a parent last if $result->{$par_col{$type}} == 1; $id = $result->{$par_col{$type}}; $type = $par_type{$type}; } return $foundparent; } # end isParent() ## DNSDB::zoneStatus() # Returns and optionally sets a zone's status # Takes a database handle, domain/revzone ID, forward/reverse flag, and optionally a status argument # Returns status, or undef on errors. sub zoneStatus { my $self = shift; my $dbh = $self->{dbh}; my $id = shift; my $revrec = shift; my $newstatus = shift || 'mu'; return undef if $id !~ /^\d+$/; # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; if ($newstatus ne 'mu') { # ooo, fun! let's see what we were passed for status eval { $newstatus = 0 if $newstatus eq 'domoff'; $newstatus = 1 if $newstatus eq 'domon'; $dbh->do("UPDATE ".($revrec eq 'n' ? 'domains' : 'revzones')." SET status=? WHERE ". ($revrec eq 'n' ? 'domain_id' : 'rdns_id')."=?", undef, ($newstatus,$id) ); ##fixme switch to more consise "Enabled " as with users? $resultstr = "Changed ".($revrec eq 'n' ? $self->domainName($id) : $self->revName($id)). " state to ".($newstatus ? 'active' : 'inactive'); my %loghash; $loghash{domain_id} = $id if $revrec eq 'n'; $loghash{rdns_id} = $id if $revrec eq 'y'; $loghash{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec); $loghash{entry} = $resultstr; $self->_log(%loghash); $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; $resultstr = ''; $errstr = $msg; return; } } my ($status) = $dbh->selectrow_array("SELECT status FROM ". ($revrec eq 'n' ? "domains WHERE domain_id=?" : "revzones WHERE rdns_id=?"), undef, ($id) ); return $status; } # end zoneStatus() ## DNSDB::getZonesByCIDR() # Get a list of zone names and IDs that records for a passed CIDR block are within. # Arguments must be passed in a hash # Requires an argument "cidr" for the CIDR block to find parent/child zone(s) for # Accepts optional arguments: # - return_location: Flag indicating whether to return default_location or not # - location: Restrict matches to a particular location/view # - sort: Valid values are ASC or DESC; if omitted or set to something else # results will be "whatever the database returns" sub getZonesByCIDR { my $self = shift; my $dbh = $self->{dbh}; my %args = @_; $args{return_location} = 1 if !defined($args{return_location}); my $sql = "SELECT rdns_id,revnet".($args{return_location} ? ',default_location' : ''). " FROM revzones WHERE (revnet >>= ? OR revnet <<= ?)". (defined($args{location}) ? " AND default_location = ?" : ''); if ($args{sort}) { if ($args{sort} eq 'ASC' || $args{sort} eq 'DESC') { $sql .= " ORDER BY revnet $args{sort}"; } } my @svals = ($args{cidr}, $args{cidr}); push @svals, $args{location} if defined $args{location}; my $result = $dbh->selectall_arrayref($sql, { Slice => {} }, @svals ); return $result; } # end getZonesByCIDR() ## DNSDB::importAXFR # Import a domain via AXFR # Takes AXFR host, domain to transfer, group to put the domain in, # and an optional hash containing: # status - active/inactive state flag (defaults to active) # rwsoa - overwrite-SOA flag (defaults to off) # keepserial - keep the upstream serial number even if we overwrite the rest of the SOA # rwns - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records) # merge - flag to automerge A or AAAA records with matching PTR records # Returns a status code (OK, WARN, or FAIL) and message - message should be blank # if status is OK, but WARN includes conditions that are not fatal but should # really be reported. sub importAXFR { my $self = shift; my $dbh = $self->{dbh}; my $ifrom_in = shift; my $zone = shift; my $group = shift; my %args = @_; ##fixme: add mode to delete&replace, merge+overwrite, merge new? $args{status} = (defined($args{status}) ? $args{status} : 0); $args{status} = 1 if $args{status} eq 'on'; my $nrecs = 0; my $soaflag = 0; my $nsflag = 0; my $warnmsg = ''; my $ifrom; my $rev = 'n'; my $code = 'OK'; my $msg = 'foobar?'; # choke on possible bad setting in ifrom # IPv4 and v6, and valid hostnames! ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i); return ('FAIL', "Bad AXFR source host $ifrom") unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i); my $errmsg; my $zone_id; my $domain_id = 0; my $rdns_id = 0; my $cidr; # magic happens! detect if we're importing a domain or a reverse zone # while we're at it, figure out what the CIDR netblock is (if we got a .arpa) # or what the formal .arpa zone is (if we got a CIDR netblock) # Handles sub-octet v4 zones in the format specified in the Cricket Book, 2nd Ed, p217-218 if ($zone =~ m{(?:\.arpa\.?|/\d+|^[\d.]+|^[a-fA-F0-9:]+)$}) { # we seem to have a reverse zone $rev = 'y'; if ($zone =~ /\.arpa\.?$/) { # we have a formal reverse zone. call _zone2cidr and get the CIDR block. ($code,$msg) = _zone2cidr($zone); return ($code, $msg) if $code eq 'FAIL'; $cidr = $msg; } elsif ($zone =~ m|^[\d.]+/\d+$|) { # v4 revzone, CIDR netblock $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block"); $zone = _ZONE($cidr, 'ZONE.in-addr.arpa', 'r', '.'); } elsif ($zone =~ /^[\d.]+$/) { # v4 revzone, leading-octet format my $mask = 32; while ($zone !~ /^\d+\.\d+\.\d+\.\d+$/) { $zone .= '.0'; $mask -= 8; } $zone .= "/$mask"; $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block"); $zone = _ZONE($cidr, 'ZONE.in-addr.arpa', 'r', '.'); } elsif ($zone =~ m|^[a-fA-F\d:]+/\d+$|) { # v6 revzone, CIDR netblock $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block"); return ('FAIL', "$zone is not a nibble-aligned block") if $cidr->masklen % 4 != 0; $zone = _ZONE($cidr, 'ZONE.ip6.arpa', 'r', '.'); } elsif ($zone =~ /^[a-fA-F\d:]+$/) { # v6 revzone, leading-group format $zone =~ s/::$//; my $mask = 128; while ($zone !~ /^(?:[a-fA-F\d]{1,4}:){7}[a-fA-F\d]$/) { $zone .= ":0"; $mask -= 16; } $zone .= "/$mask"; $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block"); $zone = _ZONE($cidr, 'ZONE.ip6.arpa', 'r', '.'); } else { # there is. no. else! return ('FAIL', "Unknown zone name format '$zone'"); } # several places this can be triggered from; better to do it once. $warnmsg .= "Apparent sub-/64 IPv6 reverse zone\n" if $cidr->masklen > 64; # quick check to start to see if we've already got one ($zone_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ("$cidr")); $rdns_id = $zone_id; } else { # default to domain ($zone_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)", undef, ($zone)); $domain_id = $zone_id; } return ('FAIL', ($rev eq 'n' ? 'Domain' : 'Reverse zone')." already exists") if $zone_id; # little local utility sub to swap $val and $host for revzone records. sub _revswap { my $rechost = shift; my $recdata = shift; if ($rechost =~ /\.in-addr\.arpa\.?$/) { $rechost =~ s/\.in-addr\.arpa\.?$//; $rechost = join '.', reverse split /\./, $rechost; } else { $rechost =~ s/\.ip6\.arpa\.?$//; my @nibs = reverse split /\./, $rechost; $rechost = ''; my $nc; foreach (@nibs) { # # fail on multicharacter nibbles; it's syntactically valid but no standard lookup # # will ever reach it, because it doesn't directly represent a real IP address. # return ('FAIL', "Invalid reverse v6 entry") if $_ !~ /^.$/; $rechost.= $_; $rechost .= ":" if ++$nc % 4 == 0 && $nc < 32; } $rechost .= ":" if $nc < 32 && $rechost !~ /\*$/; # close netblock records? ##fixme: there's a case that ends up with a partial entry here: # ip:add:re:ss:: # can't reproduce after letting it sit overnight after discovery. :( #print "$rechost\n"; # canonicalize with NetAddr::IP $rechost = NetAddr::IP->new($rechost)->addr unless $rechost =~ /\*$/; } return ($recdata,$rechost) } # Allow transactions, and raise an exception on errors so we can catch it later. # Use local to make sure these get "reset" properly on exiting this block local $dbh->{AutoCommit} = 0; local $dbh->{RaiseError} = 1; my $sth; eval { my $logparent; # Snarf the zone serial. Doing it here lets us log the serial we ultimately # import with, and cleanly override or not as per the options my $res = Net::DNS::Resolver->new; $res->nameservers($ifrom); my $soaq = $res->query($zone, "SOA"); die "Error retrieving SOA for $zone: ".$res->errorstring."\n" if !$soaq; my $ser = ($soaq->answer)[0]->{serial}; if ($args{rwsoa}) { if (!$args{keepserial}) { $ser = scalar(time); } } if ($rev eq 'n') { $dbh->do("INSERT INTO domains (domain,group_id,status,zserial) VALUES (?,?,?,?)", undef, ($zone, $group, $args{status}, $ser) ) or die $dbh->errstr; # get domain id so we can do the records ($zone_id) = $dbh->selectrow_array("SELECT currval('domains_domain_id_seq')"); $domain_id = $zone_id; $logparent = $self->_log(group_id => $group, domain_id => $domain_id, entry => "[Added ".($args{status} ? 'active' : 'inactive')." domain $zone with serial $ser via AXFR]"); } else { $dbh->do("INSERT INTO revzones (revnet,group_id,status,zserial) VALUES (?,?,?,?)", undef, ($cidr,$group,$args{status}, $ser) ); # get revzone id so we can do the records ($zone_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')"); $rdns_id = $zone_id; $logparent = $self->_log(group_id => $group, rdns_id => $rdns_id, entry => "[Added ".($args{status} ? 'active' : 'inactive')." reverse zone $cidr with serial $ser via AXFR]"); } ## bizarre DBI<->Net::DNS interaction bug: ## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while() ## fixed, apparently I was doing *something* odd, but not certain what it was that ## caused a commit instead of barfing $res->axfr_start($zone) or die "Couldn't begin AXFR\n"; $sth = $dbh->prepare("INSERT INTO records (domain_id,rdns_id,host,type,val,distance,weight,port,ttl)". " VALUES (?,?,?,?,?,?,?,?,?)"); # Stash info about sub-octet v4 revzones here so we don't have # to store the CNAMEs used to delegate a suboctet zone # $suboct{zone}{ns}[] -> array of nameservers # $suboct{zone}{cname}[] -> array of extant CNAMEs (Just In Case someone did something bizarre) ## commented pending actual use of this data. for now, we'll just ## auto-(re)create the CNAMEs in revzones on export # my %suboct; while (my $rr = $res->axfr_next()) { # Discard out-of-zone records. After trying for a while to replicate this with # *nix-based DNS servers, it appears that only MS DNS is prone to including these # in the AXFR data in the first place, and possibly only older versions at that... # so it can't be reasonably tested. Yay Microsoft. if ($rr->name !~ /$zone$/i) { $warnmsg .= "Discarding out-of-zone record ".$rr->string."\n"; } my $val; my $distance = 0; my $weight = 0; my $port = 0; my $logfrag = ''; # Collect some record parts my $type = $rr->type; my $host = $rr->name; my $ttl = ($args{newttl} ? $args{newttl} : $rr->ttl); # allow force-override TTLs # Info flags for SOA and NS records $soaflag = 1 if $type eq 'SOA'; $nsflag = 1 if $type eq 'NS'; # "Primary" types: # A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF # maybe KEY # BIND supports: # [standard] # A AAAA CNAME MX NS PTR SOA TXT # [variously experimental, obsolete, or obscure] # HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) NULL WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX # ... if one can ever find the right magic to format them correctly # Net::DNS supports: # RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO # EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY # DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem # nasty big ugly case-like thing here, since we have to do *some* different # processing depending on the record. le sigh. # do the initial processing as if the record was in a forward zone. If we're # doing a revzone, we can flip $host and $val as needed, once, after this # monster if-elsif-...-elsif-else. This actually simplifies things a lot. ##fixme: what record types other than TXT can/will have >255-byte payloads? if ($type eq 'A') { $val = $rr->address; } elsif ($type eq 'NS') { # hmm. should we warn here if subdomain NS'es are left alone? OTOH, those should rarely be rewritten anyway. next if ($args{rwns} && ($host eq $zone)); $val = $rr->nsdname; $warnmsg .= "Suspect record '".$rr->string."' may not be imported correctly: NS records may not be bare IP addresses\n" if $val =~ /^(?:(?:\d+\.){3}\d+|[a-fA-F0-9:]+)$/; $nsflag = 1; } elsif ($type eq 'CNAME') { $val = $rr->cname; $warnmsg .= "Suspect record '".$rr->string."' may not be imported correctly: CNAME records may not be bare IP addresses\n" if $val =~ /^(?:(?:\d+\.){3}\d+|[a-fA-F0-9:]+)$/; } elsif ($type eq 'SOA') { next if $args{rwsoa}; $host = $rr->rname.":".$rr->mname; $val = $rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum; $soaflag = 1; } elsif ($type eq 'PTR') { $val = $rr->ptrdname; } elsif ($type eq 'MX') { $val = $rr->exchange; $distance = $rr->preference; } elsif ($type eq 'TXT') { ##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(), ## but don't really seem enthusiastic about it. #print "should use rdatastr:\n\t".$rr->rdatastr."\n or char_str_list:\n\t".join(' ',$rr->char_str_list())."\n"; # rdatastr returns a BIND-targetted logical string, including opening and closing quotes # char_str_list returns a list of the individual string fragments in the record # txtdata returns the more useful all-in-one form (since we want to push such protocol # details as far down the stack as we can) # NB: this may turn out to be more troublesome if we ever have need of >512-byte TXT records. $val = $rr->txtdata; } elsif ($type eq 'SPF') { ##fixme: and the same caveat here, since it is apparently a clone of ::TXT $val = $rr->txtdata; } elsif ($type eq 'AAAA') { $val = $rr->address; } elsif ($type eq 'SRV') { $val = $rr->target; $distance = $rr->priority; $weight = $rr->weight; $port = $rr->port; $warnmsg .= "Suspect record '".$rr->string."' may not be imported correctly: SRV records may not be bare IP addresses\n" if $val =~ /^(?:(?:\d+\.){3}\d+|[a-fA-F0-9:]+)$/; } elsif ($type eq 'CAA') { # Store CAA records without the syntactic quotes $val = join(" ", $rr->flags, $rr->tag, $rr->value); } elsif ($type eq 'KEY') { # we don't actually know what to do with these... $val = $rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname; } else { $val = $rr->rdatastr; # Finding a different record type is not fatal.... just problematic. # We may not be able to export it correctly. $warnmsg .= "Unusual record ".$rr->name." ($type) found\n"; } if ($rev eq 'y' && $type ne 'SOA') { # up to this point we haven't meddled with the record's hostname part or rdata part. # for reverse records, (except SOA) we must swap the two. $host = $val; $val = $rr->name; my ($tmpcode,$tmpmsg) = _zone2cidr($val); if ($tmpcode eq 'FAIL') { # $val did not have a valid IP value. It's syntactically valid but WTF? $warnmsg .= "Suspect record '".$rr->string."' may not be imported correctly: $tmpmsg\n"; } else { # $val has a valid IP value. See if we can store it as that IP value. # Note we're enumerating do-nothing cases for clarity. ##enhance: this is where we will implement the more subtle variations on #53 if ($type ne 'PTR' && $type ne 'NS' && $type ne 'CNAME' && $type ne 'TXT') { # case: the record is "weird" - ie, not a PTR, NS, CNAME, or TXT # $warnmsg .= "Discarding suspect record '".$rr->string."'\n" if $self->{strict} eq 'full'; } elsif ($type eq 'PTR' && $tmpmsg->masklen != 32 && $tmpmsg->masklen != 128) { # case: PTR with netblock value, not IP value # eg, "@ PTR foo" in zone f.e.e.b.d.a.e.d.ip6.arpa should not be # stored/displayed as dead:beef::/32 PTR foo ## hrm. WTF is this case for, anyway? Needs testing to check the logic. # } elsif ( ($type eq 'PTR' || $type eq 'NS' || $type eq 'CNAME' || $type eq 'TXT') && # ($tmpmsg->masklen != $cidr->masklen) # ) { # # leave $val as-is if the record is "normal" (a PTR, NS, CNAME, or TXT), # # and the mask does not match the zone #$warnmsg .= "WTF case: $host $type $val\n"; # # $warnmsg .= "Discarding suspect record '".$rr->string."'\n" if $self->{strict} eq 'full'; } else { $val = $tmpmsg; $val =~ s/\/(?:32|128)$//; # automagically converts $val back to a string before s/// #$val =~ s/:0$//g; } } # magic? convert * records to PTR template (not sure this actually makes sense) #if ($val =~ /^\*/) { # $val =~ s/\*\.//; # ($tmpcode,$tmpmsg) = _zone2cidr($val); # if ($tmpcode eq 'FAIL') { # $val = "*.$val"; # $warnmsg .= "Suspect record '".$rr->string."' may not be converted to PTR template correctly: $tmpmsg\n"; # } else { # $type = 'PTR template'; # $val = $tmpmsg; if $tmp # $val =~ s/\/(?:32|128)$//; # automagically converts $val back to a string before s/// # } #} } # non-SOA revrec $host/$val inversion and munging my $logentry = "[AXFR ".($rev eq 'n' ? $zone : $cidr)."] "; if ($args{merge}) { if ($rev eq 'n') { # importing a domain; we have A and AAAA records that could be merged with matching PTR records my $etype; my ($erdns,$erid,$ettl) = $dbh->selectrow_array("SELECT rdns_id,record_id,ttl FROM records ". "WHERE host=? AND val=? AND type=12", undef, ($host, $val) ); if ($erid) { if ($type eq 'A') { # PTR -> A+PTR $etype = 65280; $logentry .= "Merged A record with existing PTR record '$host A+PTR $val', TTL $ettl"; } if ($type eq 'AAAA') { # PTR -> AAAA+PTR $etype = 65281; $logentry .= "Merged AAAA record with existing PTR record '$host AAAA+PTR $val', TTL $ettl"; } $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL $dbh->do("UPDATE records SET domain_id=?,ttl=?,type=? WHERE record_id=?", undef, ($domain_id, $ettl, $etype, $erid)); $nrecs++; $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $erdns, entry => $logentry); next; # while axfr_next } } # $rev eq 'n' else { # importing a revzone, we have PTR records that could be merged with matching A/AAAA records my ($domid,$erid,$ettl,$etype) = $dbh->selectrow_array("SELECT domain_id,record_id,ttl,type FROM records ". "WHERE host=? AND val=? AND (type=1 OR type=28)", undef, ($host, $val) ); if ($erid) { if ($etype == 1) { # A -> A+PTR $etype = 65280; $logentry .= "Merged PTR record with existing matching A record '$host A+PTR $val', TTL $ettl"; } if ($etype == 28) { # AAAA -> AAAA+PTR $etype = 65281; $logentry .= "Merged PTR record with existing matching AAAA record '$host AAAA+PTR $val', TTL $ettl"; } $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL $dbh->do("UPDATE records SET rdns_id=?,ttl=?,type=? WHERE record_id=?", undef, ($rdns_id, $ettl, $etype, $erid)); $nrecs++; $self->_log(group_id => $group, domain_id => $domid, rdns_id => $rdns_id, entry => $logentry); next; # while axfr_next } } # $rev eq 'y' } # if $args{merge} # Insert the new record $sth->execute($domain_id, $rdns_id, $host, $reverse_typemap{$type}, $val, $distance, $weight, $port, $ttl); $nrecs++; if ($type eq 'SOA') { # also !$args{rwsoa}, but if that's set, it should be impossible to get here. my @tmp1 = split /:/, $host; my @tmp2 = split /:/, $val; $logentry .= "Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ". "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl"; } elsif ($logfrag) { # special case for log entries we need to meddle with a little. $logentry .= $logfrag; } else { $logentry .= "Added record '".($rev eq 'y' ? $val : $host)." $type"; $logentry .= " [distance $distance]" if $type eq 'MX'; $logentry .= " [priority $distance] [weight $weight] [port $port]" if $type eq 'SRV'; $logentry .= " ".($rev eq 'y' ? $host : $val)."', TTL $ttl"; } $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $rdns_id, logparent => $logparent, entry => $logentry); } # while axfr_next # Detect and handle delegated subzones # Placeholder for when we decide what to actually do with this, see previous comments in NS and CNAME handling. #foreach (keys %suboct) { # print "found ".($suboct{$_}{ns} ? @{$suboct{$_}{ns}} : '0')." NS records and ". # ($suboct{$_}{cname} ? @{$suboct{$_}{cname}} : '0')." CNAMEs for $_\n"; #} # Overwrite SOA record if ($args{rwsoa}) { $soaflag = 1; my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM "._rectable('y', $rev)." WHERE group_id=? AND type=?"); my $sthputsoa = $dbh->prepare("INSERT INTO records (". ($rev eq 'n' ? 'domain_id' : 'rdns_id').",host,type,val,ttl) VALUES (?,?,?,?,?)"); $sthgetsoa->execute($group,$reverse_typemap{SOA}); while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) { if ($rev eq 'n') { $host =~ s/DOMAIN/$zone/g; $val =~ s/DOMAIN/$zone/g; # arguably useless } else { $host =~ s/ADMINDOMAIN/$self->{domain}/g; } $sthputsoa->execute($zone_id,$host,$reverse_typemap{SOA},$val,$ttl); } } # Add standard NS records. The old one(s) should have been skipped by this point. if ($args{rwns}) { $nsflag = 1; my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM "._rectable('y',$rev)." WHERE group_id=? AND type=?"); my $sthputns = $dbh->prepare("INSERT INTO records (". ($rev eq 'n' ? 'domain_id' : 'rdns_id').",host,type,val,ttl) VALUES (?,?,?,?,?)"); $sthgetns->execute($group,$reverse_typemap{NS}); while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) { if ($rev eq 'n') { $host =~ s/DOMAIN/$zone/g; $val =~ s/DOMAIN/$zone/g; #hmm. } else { $host =~ s/ADMINDOMAIN/$self->{domain}/g; #hmm. $val =~ s/ZONE/$cidr/g; } $sthputns->execute($zone_id,$host,$reverse_typemap{NS},$val,$ttl); } } die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs; die "Bad zone: No SOA record!\n" if !$soaflag; die "Bad zone: No NS records!\n" if !$nsflag; $dbh->commit; }; if ($@) { my $msg = $@; eval { $dbh->rollback; }; return ('FAIL',$msg." $warnmsg"); } else { return ('WARN', $warnmsg) if $warnmsg; return ('OK',"Imported OK"); } # it should be impossible to get here. return ('WARN',"OOOK!"); } # end importAXFR() ## DNSDB::importBIND() sub importBIND { } # end importBIND() ## DNSDB::import_tinydns() sub import_tinydns { } # end import_tinydns() ## DNSDB::export() # Export the DNS database, or a part of it # Takes a string indicating the export type, plus optional arguments depending on type # Writes zone data to targets as appropriate for type sub export { my $self = shift; my $target = shift; if (!$target) { $errstr = "Can't export nothing"; return; } if ($target eq 'tiny') { eval { $self->__export_tiny(@_); }; if ($@) { $errstr = $@; return undef; } } # BIND and NSD (and possibly others) could be merged, or partially # merged, since pretty much everyone uses BIND-style zone files elsif ($target eq 'bind') { require DNSDB::ExportBIND; eval { # there are probably better ways to structure this DNSDB::ExportBIND::export($self, @_); }; if ($@) { $errstr = $@; return undef; } } # elsif ($target eq 'foo') { # __export_foo(@_); #} # etc return 1; } # end export() ## DNSDB::__export_tiny # Internal sub to implement tinyDNS (compatible) export # Takes filehandle to write export to, optional argument(s) # to determine which data gets exported sub __export_tiny { my $self = shift; my $dbh = $self->{dbh}; my $datafile = shift; my $zonefilehandle = $datafile; # makes cache/no-cache a little simpler ##fixme: slurp up further options to specify particular zone(s) to export ##fixme: fail if $datafile isn't an open, writable file # Error check - does the cache dir exist, if we're using one? if ($self->{usecache}) { die "Cache directory $self->{exportcache} does not exist\n" if !-e $self->{exportcache}; die "$self->{exportcache} is not a directory\n" if !-d $self->{exportcache}; die "$self->{exportcache} must be both readable and writable\n" if !-r $self->{exportcache} || !-w $self->{exportcache}; } # easy case - export all evarything # not-so-easy case - export item(s) specified # todo: figure out what kind of list we use to export items # raw packet in unknown format: first byte indicates length # of remaining data, allows up to 255 raw bytes # note: the only I/O failures we seem to be able to actually catch # here are "closed filehandle" errors. we're probably not writing # enough data at this point to properly trigger an "out of space" # error. :/ eval { use warnings FATAL => ('io'); # Locations/views - worth including in the caching setup? my $lochash = $dbh->selectall_hashref("SELECT location,iplist FROM locations", 'location'); foreach my $location (keys %$lochash) { foreach my $ipprefix (split /[,\s]+/, $lochash->{$location}{iplist}) { $ipprefix =~ s/\s+//g; $ipprefix = new NetAddr::IP $ipprefix; ##fixme: how to handle IPv6? next if $ipprefix->{isv6}; # have to account for /nn CIDR entries. tinydns only speaks octet-sliced prefix. if ($ipprefix->masklen <= 8) { foreach ($ipprefix->split(8)) { my $tmp = $_->addr; $tmp =~ s/\.\d+\.\d+\.\d+$//; print $datafile "%$location:$tmp\n"; } } elsif ($ipprefix->masklen <= 16) { foreach ($ipprefix->split(16)) { my $tmp = $_->addr; $tmp =~ s/\.\d+\.\d+$//; print $datafile "%$location:$tmp\n"; } } elsif ($ipprefix->masklen <= 24) { foreach ($ipprefix->split(24)) { my $tmp = $_->addr; $tmp =~ s/\.\d+$//; print $datafile "%$location:$tmp\n"; } } else { foreach ($ipprefix->split(32)) { print $datafile "%$location:".$_->addr."\n"; } } } print $datafile "%$location\n" if !$lochash->{$location}{iplist}; } }; if ($@) { die "Error writing locations to master file: $@, $!\n"; } # tracking hash so we don't double-export A+PTR or AAAA+PTR records. my %recflags; # For reasons unknown, we can't sanely UNION these statements. Feh. # Supposedly it should work though (note last 3 lines): ## PG manual #UNION Clause # #The UNION clause has this general form: # # select_statement UNION [ ALL ] select_statement # #select_statement is any SELECT statement without an ORDER BY, LIMIT, FOR UPDATE, or FOR SHARE clause. (ORDER BY #and LIMIT can be attached to a subexpression if it is enclosed in parentheses. Without parentheses, these #clauses will be taken to apply to the result of the UNION, not to its right-hand input expression.) my $soasth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ". "FROM records WHERE rdns_id=? AND type=6"); my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ". "FROM records WHERE rdns_id=? AND NOT type=6 ". "ORDER BY masklen(inetlazy(val)) DESC, inetlazy(val)"); my $revsth = $dbh->prepare("SELECT rdns_id,revnet,status,changed FROM revzones WHERE status=1 ". "ORDER BY masklen(revnet) DESC, rdns_id"); my $zonesth = $dbh->prepare("UPDATE revzones SET changed='n' WHERE rdns_id=?"); $revsth->execute(); while (my ($revid,$revzone,$revstat,$changed) = $revsth->fetchrow_array) { ##fixme: need to find a way to block opening symlinked files without introducing a race. # O_NOFOLLOW # If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was # added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will # still be followed. # but that doesn't help other platforms. :/ my $tmpzone = NetAddr::IP->new($revzone); ##fixme: locations/views? subnet mask? need to avoid possible collisions with zone/superzone ## (eg /20 vs /24, starting on .0.0) my $cz = $tmpzone->network->addr."-".$tmpzone->masklen; my $cachefile = "$self->{exportcache}/$cz"; my $tmpcache = "$self->{exportcache}/tmp.$cz.$$"; eval { # write fresh records if: # - we are not using the cache # - force_refresh is set # - the zone has changed # - the cache file does not exist # - the cache file is empty if (!$self->{usecache} || $self->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) { if ($self->{usecache}) { open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n"; $zonefilehandle = *ZONECACHE; } # need to fetch this separately since the rest of the records all (should) have real IPs in val $soasth->execute($revid); my (@zsoa) = $soasth->fetchrow_array(); $self->_printrec_tiny($zonefilehandle, $zsoa[7], 'y',\%recflags,$revzone, $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],''); $recsth->execute($revid); my $fullzone = _ZONE($tmpzone, 'ZONE', 'r', '.').($tmpzone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); while (my ($host, $type, $val, $dist, $weight, $port, $ttl, $recid, $loc, $stamp, $expires, $stampactive) = $recsth->fetchrow_array) { next if $recflags{$recid}; # Check for out-of-zone data if ($val =~ /\.arpa$/) { # val is non-IP if ($val !~ /$fullzone$/) { warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n"; next; } } else { my $ipval = new NetAddr::IP $val; if (!$tmpzone->contains($ipval)) { warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n"; next; } } # is $val a raw .arpa name? # Spaces are evil. $val =~ s/^\s+//; $val =~ s/\s+$//; if ($typemap{$type} ne 'TXT') { # Leading or trailng spaces could be legit in TXT records. $host =~ s/^\s+//; $host =~ s/\s+$//; } $self->_printrec_tiny($zonefilehandle, $recid, 'y', \%recflags, $revzone, $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive); $recflags{$recid} = 1; } # while ($recsth) if ($self->{usecache}) { close ZONECACHE; # force the file to be written # catch obvious write errors that leave an empty temp file if (-s $tmpcache) { rename $tmpcache, $cachefile or die "Error overwriting cache file $cachefile with temporary file: $!\n"; } } } # if $changed or cache filesize is 0 }; if ($@) { die "error writing ".($self->{usecache} ? 'new data for ' : '')."$revzone: $@\n"; # error! something borked, and we should be able to fall back on the old cache file # report the error, somehow. } else { # mark zone as unmodified. Only do this if no errors, that way # export failures should recover a little more automatically. $zonesth->execute($revid); } if ($self->{usecache}) { # We've already made as sure as we can that a cached zone file is "good", # although possibly stale/obsolete due to errors creating a new one. eval { open CACHE, "<$cachefile" or die $!; print $datafile $_ or die "error copying cached $revzone to master file: $!" while ; close CACHE; }; die $@ if $@; } } # while ($revsth) $soasth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ". "FROM records WHERE domain_id=? AND type=6"); $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ". "FROM records WHERE domain_id=? AND NOT type=6"); # Just exclude all types relating to rDNS # "FROM records WHERE domain_id=? AND type < 65280"); # Just exclude all types relating to rDNS my $domsth = $dbh->prepare("SELECT domain_id,domain,status,changed FROM domains WHERE status=1 ORDER BY domain_id"); $zonesth = $dbh->prepare("UPDATE domains SET changed='n' WHERE domain_id=?"); $domsth->execute(); while (my ($domid,$dom,$domstat,$changed) = $domsth->fetchrow_array) { ##fixme: need to find a way to block opening symlinked files without introducing a race. # O_NOFOLLOW # If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was # added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will # still be followed. # but that doesn't help other platforms. :/ my $cachefile = "$self->{exportcache}/$dom"; my $tmpcache = "$self->{exportcache}/tmp.$dom.$$"; eval { # write fresh records if: # - the zone contains ALIAS pseudorecords, which need to cascade changes from the upstream CNAME farm at every opportunity if ( ($dbh->selectrow_array("SELECT count(*) FROM records WHERE domain_id = ? AND type=65300", undef, $domid))[0] ) { $changed = 1; # abuse this flag for zones with ALIAS records # also update the serial number, because while it shouldn't matter purely for serving # records, it WILL matter if AXFR becomes part of the publishing infrastructure $self->_updateserial(domain_id => $domid); } # - the zone contains records which expire in less than 10 minutes or became valid less than 10 minutes ago # note, no need to multi-bump the serial elsif ( ($dbh->selectrow_array("SELECT COUNT(*) FROM records WHERE domain_id = ? AND ". "stampactive='t' AND @(extract(epoch from stamp-now())) < 600", undef, $domid))[0] ) { $changed = 1; $self->_updateserial(domain_id => $domid); } # - we are not using the cache # - force_refresh is set # - the zone has changed # - the cache file does not exist # - the cache file is empty if (!$self->{usecache} || $self->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) { if ($self->{usecache}) { open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n"; $zonefilehandle = *ZONECACHE; } # need to fetch this separately so the SOA comes first in the flatfile.... # Just In Case we need/want to reimport from the flatfile later on. $soasth->execute($domid); my (@zsoa) = $soasth->fetchrow_array(); $self->_printrec_tiny($zonefilehandle, $zsoa[7], 'n',\%recflags,$dom, $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],''); $recsth->execute($domid); while (my ($host,$type,$val,$dist,$weight,$port,$ttl,$recid,$loc,$stamp,$expires,$stampactive) = $recsth->fetchrow_array) { next if $recflags{$recid}; # Check for out-of-zone data $host = $dom if $host eq '@'; if ($host !~ /$dom$/i) { warn "Not exporting out-of-zone record $host $type $val, $ttl (zone $dom)\n"; next; } # Spaces are evil. $host =~ s/^\s+//; $host =~ s/\s+$//; if ($typemap{$type} ne 'TXT') { # Leading or trailng spaces could be legit in TXT records. $val =~ s/^\s+//; $val =~ s/\s+$//; } $self->_printrec_tiny($zonefilehandle, $recid, 'n', \%recflags, $dom, $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive); $recflags{$recid} = 1; } # while ($recsth) if ($self->{usecache}) { close ZONECACHE; # force the file to be written # catch obvious write errors that leave an empty temp file if (-s $tmpcache) { rename $tmpcache, $cachefile or die "Error overwriting cache file $cachefile with temporary file: $!\n"; } } } # if $changed or cache filesize is 0 }; if ($@) { die "error writing ".($self->{usecache} ? 'new data for ' : '')."$dom: $@\n"; # error! something borked, and we should be able to fall back on the old cache file # report the error, somehow. } else { # mark domain as unmodified. Only do this if no errors, that way # export failures should recover a little more automatically. $zonesth->execute($domid); } if ($self->{usecache}) { # We've already made as sure as we can that a cached zone file is "good", # although possibly stale/obsolete due to errors creating a new one. eval { open CACHE, "<$cachefile" or die $!; print $datafile $_ or die "error copying cached $dom to master file: $!" while ; close CACHE; }; die $@ if $@; } } # while ($domsth) return 1; } # end __export_tiny() # Utility sub for __export_tiny above sub _printrec_tiny { my $self = shift; my ($datafile, $recid, $revrec, $recflags, $zone, $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive) = @_; $loc = '' if !$loc; # de-nullify - just in case ##fixme: handle case of record-with-location-that-doesn't-exist better. # note this currently fails safe (tested) - records with a location that # doesn't exist will not be sent to any client # $loc = '' if !$lochash->{$loc}; ## Records that are valid only before or after a set time # record due to expire sometime is the complex case. we don't want to just # rely on tinydns' auto-adjusting TTLs, because the default TTL in that case # is one day instead of the SOA minttl as BIND might do. # consider the case where a record is set to expire a week ahead, but the next # day later you want to change it NOW (or as NOWish as you get with your DNS # management practice). but now you're stuck, because someone, somewhere, # has just done a lookup before your latest change was published, and they'll # be caching that old, broken record for 1 day instead of your zone default # TTL. # $stamp-$ttl is the *latest* we can publish the record with the defined TTL # to still have the expiry happen as scheduled, but we need to find some # *earlier* point. We can maybe guess, and 2x TTL is probably reasonable, # but we need info on the export frequency. # export the normal, non-expiring record up until $stamp-, then # switch to exporting a record with the TAI64 stamp and a 0 TTL so tinydns # takes over TTL management. if ($stampactive) { if ($expires) { # record expires at $stamp; decide if we need to keep the TTL and ignore # the stamp for a time or if we need to change the TTL to 0 and convert # $stamp to TAI64 so tinydns can use $stamp to autoadjust the TTL on the fly. # extra hack, optimally needs more knowledge of data export frequency # smack the idiot customer who insists on 0 TTLs; they can suck up and # deal with a 10-minute TTL. especially on scheduled changes. note this # should be (export freq * 2), but we don't know the actual export frequency. $ttl = 300 if $ttl == 0; #hack phtui my $ahead = (86400 < $ttl*2 ? 86400 : $ttl*2); if ((time() + $ahead) < $stamp) { # more than 2x TTL OR more than one day (whichever is less) from expiry time; publish normal record $stamp = ''; } else { # less than 2x TTL from expiry time, let tinydns take over TTL management and publish the TAI64 stamp. $ttl = 0; $stamp = unixtai64($stamp); $stamp =~ s/\@//; } } else { # record is "active after"; convert epoch from database to TAI64, publish, and collect $200. $stamp = unixtai64($stamp); $stamp =~ s/\@//; } } else { # flag for active timestamp is false; don't actually put a timestamp in the output $stamp = ''; } # support tinydns' auto-TTL $ttl = '' if $ttl == -1; # these are WAY FREAKING HIGH - higher even than most TLD registry TTLs! # NS 259200 => 3d # all others 86400 => 1d if ($revrec eq 'y') { $val = $zone if $val eq '@'; } else { $host = $zone if $host eq '@'; } ## Convert a bare number into an octal-coded pair of octets. # Take optional arg to indicate a decimal or hex input. Defaults to hex. sub octalize { my $tmp = shift; my $srctype = shift || 'h'; # default assumes hex string $tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits $tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits my @o = ($tmp =~ /^(..)(..)$/); # split into octets return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]); } # Utility sub-sub for reverse records; with "any-record-in-any-zone" # we may need to do extra processing on $val to make it publishable. sub __revswap { my $host = shift; my $val = shift; return ($val, $host) if $val =~ /\.arpa/; $val = new NetAddr::IP $val; my $newval = _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); return ($newval, $host); } ## WARNING: This works to export even the whole Internet's worth of IP space... ## if you have the disk/RAM to handle the dataset, and you call this sub based on /16-sized chunks ## A /16 took ~3 seconds with a handful of separate records; adding a /8 pushed export time out to ~13m:40s ## 0/0 is estimated to take ~54 hours and ~256G of disk ## RAM usage depends on how many non-template entries you have in the set. ## This should probably be done on record addition rather than export; large blocks may need to be done in a ## forked process sub __publish_subnet { my $self = shift; # *sigh* need to pass in the DNSDB object so we can read a couple of options my $sub = shift; my $recflags = shift; my $hpat = shift; my $fh = shift; my $ttl = shift; my $stamp = shift; my $loc = shift; my $zone = shift; # error/sanity check - if $zone is not an IP address, make sure we're just # converting a string that looks like an IP into a NetAddr::IP, instead of # doing a DNS lookup that is virtually guaranteed to be wrong. still a # little hazy where this functionality in NetAddr::IP is useful. # instead, fall back to the octet-boundary CIDR derived from $sub. if ($zone !~ m,^\d+\.\d+\.\d+\.\d+/\d+$,) { $zone = $sub; $zone =~ s,\d+/\d+$,0/24,; ##fixme: case of larger than /24? # could apply another sanity check here? as above anything much larger # than a /16 is WAY too time-consuming to publish in one go } $zone = new NetAddr::IP $zone; my $ptronly = shift || 0; # do this conversion once, not (number-of-ips-in-subnet) times my $arpabase = _ZONE($zone, 'ZONE.in-addr.arpa', 'r', '.'); my $iplist = $sub->splitref(32); my $ipindex = -1; foreach (@$iplist) { my $ip = $_->addr; $ipindex++; # make as if we split the non-octet-aligned block into octet-aligned blocks as with SOA my $lastoct = (split /\./, $ip)[3]; next if $$recflags{$ip}; # && $self->{skip_bcast_255} $$recflags{$ip}++; next if $hpat eq '%blank%'; # Allows blanking a subnet so no records are published. my $rec = $hpat; # start fresh with the template for each IP ##fixme: there really isn't a good way to handle sub-/24 zones here. This way at least # seems less bad than some alternatives. $self->_template4_expand(\$rec, $ip, \$sub, $ipindex); # _template4_expand may blank $rec; if so, don't publish a record next if !$rec; if ($ptronly || $zone->masklen > 24) { print $fh "^$lastoct.$arpabase:$rec:$ttl:$stamp:$loc\n" or die $!; if (!$ptronly) { # print a separate A record. Arguably we could use an = record here instead. print $fh "+$rec:$ip:$ttl:$stamp:$loc\n" or die $!; } } else { print $fh "=$rec:$ip:$ttl:$stamp:$loc\n" or die $!; } } } # __publish_subnet ## And now the meat. ##fixme? append . to all host/val hostnames #print "debug: rawdata: $host $typemap{$type} $val\n"; if ($typemap{$type} eq 'SOA') { # host contains pri-ns:responsible # val is abused to contain refresh:retry:expire:minttl # let's be explicit about abusing $host and $val my ($email, $primary) = (split /:/, $host)[0,1]; my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3]; my $serial = 0; # fail less horribly than leaving it empty? if ($revrec eq 'y') { ##fixme: have to publish SOA records for each v4 /24 in sub-/16, and each /16 in sub-/8 # what about v6? # -> only need SOA for local chunks offset from reverse delegation boundaries, so v6 is fine # anyone who says they need sub-nibble v6 delegations, at this time, needs their head examined. ##fixme?: alternate SOA serial schemes? ($serial) = $self->{dbh}->selectrow_array("SELECT zserial FROM revzones WHERE revnet=?", undef, $zone); $zone = NetAddr::IP->new($zone); # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones if (!$zone->{isv6} && ($zone->masklen < 24) && ($zone->masklen % 8 != 0)) { foreach my $szone ($zone->split($zone->masklen + (8 - $zone->masklen % 8))) { $szone = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.'); print $datafile "Z$szone:$primary:$email:$serial:$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n" or die $!; } return; # skips "default" bits just below } $zone = _ZONE($zone, 'ZONE', 'r', '.').($zone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); } else { # just snarfing the right SOA serial for the zone type ##fixme?: alternate SOA serial schemes? ($serial) = $self->{dbh}->selectrow_array("SELECT zserial FROM domains WHERE domain=?", undef, $zone); } # revrec <> 'y' $serial = '' if !$serial; # suppress a "uninitialized value" warning. empty serial isn't an error, just falls back to tinydns' autoserial print $datafile "Z$zone:$primary:$email:$serial:$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n" or die $!; } # SOA elsif ($typemap{$type} eq 'A') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; print $datafile "+$host:$val:$ttl:$stamp:$loc\n" or die $!; } # A elsif ($typemap{$type} eq 'NS') { if ($revrec eq 'y') { $val = NetAddr::IP->new($val); # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones if (!$val->{isv6} && ($val->masklen < 24) && ($val->masklen % 8 != 0)) { foreach my $szone ($val->split($val->masklen + (8 - $val->masklen % 8))) { my $szone2 = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.'); next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen; print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n" or die $!; $$recflags{$szone2} = $val->masklen; } } elsif ($val->{isv6} && ($val->masklen < 64) && ($val->masklen % 4 !=0)) { foreach my $szone ($val->split($val->masklen + (4 - $val->masklen % 4))) { my $szone2 = _ZONE($szone, 'ZONE.ip6.arpa', 'r', '.'); next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen; print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n" or die $!; $$recflags{$szone2} = $val->masklen; } } else { my $val2 = _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'); print $datafile "\&$val2"."::$host:$ttl:$stamp:$loc\n" or die $!; $$recflags{$val2} = $val->masklen; } } else { print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n" or die $!; } } # NS elsif ($typemap{$type} eq 'AAAA') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; my $altgrp = 0; my @altconv; # Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing) foreach (split /:/, $val) { if (/^$/) { # flag blank entry; this is a series of 0's of (currently) unknown length $altconv[$altgrp++] = 's'; } else { # call sub to convert 1-4 hex digits to 2 string-rep octal bytes $altconv[$altgrp++] = octalize($_) } } my $prefix = ":$host:28:"; foreach my $octet (@altconv) { # if not 's', output $prefix .= $octet unless $octet =~ /^s$/; # if 's', output (9-array length)x literal '\000\000' $prefix .= '\000\000'x(9-$altgrp) if $octet =~ /^s$/; } print $datafile "$prefix:$ttl:$stamp:$loc\n" or die $!; } # AAAA elsif ($typemap{$type} eq 'MX') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n" or die $!; } # MX elsif ($typemap{$type} eq 'TXT') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; # le sigh. Some idiot DNS implementations don't seem to like tinydns autosplitting # long TXT records at 127 characters instead of 255. Hand-crafting a record seems # to paper over the remote stupid. We will NOT try to split on whitespace; the # contents of a TXT record are opaque and clients who can't deal are even more broken # than the ones that don't like them split at 127 characters... because BIND tries # to "intelligently" split TXT data, and abso-by-damn-lutely generates chunks <255 # characters, and anything that can't interpret BIND's DNS responses has no business # trying to interpret DNS data at all. if ($self->{autotxt}) { # let tinydns deal with splitting the record. note tinydns autosplits at 127 # characters, not 255. Because Reasons. $val =~ s/:/\\072/g; # may need to replace other symbols print $datafile "'$host:$val:$ttl:$stamp:$loc\n" or die $!; } else { print $datafile ":$host:16:"; my @txtsegs = $val =~ /.{1,255}/g; foreach (@txtsegs) { my $len = length($_); s/:/\\072/g; printf $datafile "\\%0.3o%s", $len, $_; } print $datafile ":$ttl:$stamp:$loc\n"; } # by-hand TXT #:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600 #@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all" #'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600 #txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?" #:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600 # very long TXT record as brought in by axfr-get # note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that # also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/ #:longtxt.deepnet.cx:16: #\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. #\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. #\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. #:3600 } # TXT elsif ($typemap{$type} eq 'CNAME') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; if ($zone =~ /\.rpz$/) { $val = '..' if $val eq '.'; } print $datafile "C$host:$val:$ttl:$stamp:$loc\n" or die $!; } # CNAME elsif ($typemap{$type} eq 'SRV') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; # data is two-byte values for priority, weight, port, in that order, # followed by length/string data my $prefix = ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d'); $val .= '.' if $val !~ /\.$/; foreach (split /\./, $val) { $prefix .= sprintf "\\%0.3o%s", length($_), $_ or die $!; } print $datafile "$prefix\\000:$ttl:$stamp:$loc\n" or die $!; } # SRV elsif ($typemap{$type} eq 'CAA') { # CAA records really don't make much sense in reverse zones #($host,$val) = __revswap($host,$val) if $revrec eq 'y'; return if $revrec eq 'y'; # data is a bitfield byte, length byte+string, then "everything else" my $prefix = ":$host:257:"; my ($caaflags, $caatag, $caadetail) = ($val =~ /(\d+)\s+(\w+)\s+(.+)/); $prefix .= sprintf "\\%0.3o", $caaflags; $prefix .= sprintf "\\%0.3o%s", length($caatag), $caatag; $caadetail =~ s/:/\\072/g; $caadetail =~ s/;/\\073/g; # Not strictly necessary but may be helpful validating records by eye $caadetail =~ s/^\s*"\s*//; # AXFR imports may produce strings with embedded quotes; these $caadetail =~ s/\s*"\s*$//; # are purely a syntactic crutch for BIND-style zone files print $datafile "$prefix$caadetail:$ttl:$stamp:$loc\n" or die $!; } # CAA elsif ($typemap{$type} eq 'RP') { ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; # RP consists of two mostly free-form strings. # The first is supposed to be an email address with @ replaced by . (as with the SOA contact) # The second is the "hostname" of a TXT record with more info. my $prefix = ":$host:17:"; my ($who,$what) = split /\s/, $val; foreach (split /\./, $who) { $prefix .= sprintf "\\%0.3o%s", length($_), $_; } $prefix .= '\000'; foreach (split /\./, $what) { $prefix .= sprintf "\\%0.3o%s", length($_), $_; } print $datafile "$prefix\\000:$ttl:$stamp:$loc\n" or die $!; } # RP elsif ($typemap{$type} eq 'PTR') { $$recflags{$val}++; # technically a PTR template thing, but Bad Data Happens return if $host =~ /\%blank\%/; if ($revrec eq 'y') { if ($val =~ /\.arpa$/) { # someone put in the formal .arpa name. humor them. print $datafile "^$val:$host:$ttl:$stamp:$loc\n" or die $!; } else { $zone = NetAddr::IP->new($zone); if (!$zone->{isv6} && $zone->masklen > 24) { # sub-octet v4 zone ($val) = ($val =~ /\.(\d+)$/); print $datafile "^$val."._ZONE($zone, 'ZONE', 'r', '.').'.in-addr.arpa'. ":$host:$ttl:$stamp:$loc\n" or die $!; } else { # not going to care about strange results if $val is not an IP value and is resolveable in DNS $val = NetAddr::IP->new($val); print $datafile "^". _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa'). ":$host:$ttl:$stamp:$loc\n" or die $!; } } # non-".arpa" $val } else { # PTRs in forward zones are less bizarre and insane than some other record types # in reverse zones... OTOH we can't validate them any which way, so we cross our # fingers and close our eyes and make it Someone Else's Problem. print $datafile "^$host:$val:$ttl:$stamp:$loc\n" or die $!; } } # PTR elsif ($type == 65280) { # A+PTR $$recflags{$val}++; # technically a PTR template thing, but Bad Data Happens return if $host =~ /\%blank\%/; print $datafile "=$host:$val:$ttl:$stamp:$loc\n" or die $!; } # A+PTR elsif ($type == 65281) { # AAAA+PTR $$recflags{$val}++; # treat these as two separate records. since tinydns doesn't have # a native combined type, we have to create them separately anyway. # print both; a dangling record is harmless, and impossible via web # UI anyway $self->_printrec_tiny($datafile,$recid,'n',$recflags, $self->domainName($self->_hostparent($host)), $host, 28, $val, $dist, $weight, $port, $ttl, $loc, $stamp); $self->_printrec_tiny($datafile, $recid, 'y', $recflags, $zone, $host, 12, $val, $dist, $weight, $port, $ttl, $loc, $stamp); ##fixme: add a config flag to indicate use of the patch from http://www.fefe.de/dns/ # type 6 is for AAAA+PTR, type 3 is for AAAA } # AAAA+PTR elsif ($type == 65282) { # PTR template # only useful for v4 with standard DNS software, since this expands all # IPs in $zone (or possibly $val?) with autogenerated records $val = NetAddr::IP->new($val); return if $val->{isv6}; if ($val->masklen <= 16) { foreach my $sub ($val->split(16)) { $self->__publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, $zone, 1); } } else { $self->__publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, $zone, 1); } } # PTR template elsif ($type == 65283) { # A+PTR template $val = NetAddr::IP->new($val); # Just In Case. An A+PTR should be impossible to add to a v6 revzone via API. return if $val->{isv6}; if ($val->masklen < 16) { foreach my $sub ($val->split(16)) { $self->__publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, $zone, 0); } } else { $self->__publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, $zone, 0); } } # A+PTR template elsif ($type == 65284) { # AAAA+PTR template # Stub for completeness. Could be exported to DNS software that supports # some degree of internal automagic in generic-record-creation # (eg http://search.cpan.org/dist/AllKnowingDNS/ ) } # AAAA+PTR template elsif ($type == 65285) { # Delegation # This is intended for reverse zones, but may prove useful in forward zones. # All delegations need to create one or more NS records. The NS record handler knows what to do. $self->_printrec_tiny($datafile,$recid,$revrec,$recflags,$zone,$host,$reverse_typemap{'NS'}, $val,$dist,$weight,$port,$ttl,$loc,$stamp); if ($revrec eq 'y') { # In the case of a sub-/24 v4 reverse delegation, we need to generate CNAMEs # to redirect all of the individual IP lookups as well. # OR # create NS records for each IP # Not sure how this would actually resolve if a /24 or larger was delegated # one way, and a sub-/24 in that >=/24 was delegated elsewhere... my $dblock = NetAddr::IP->new($val); if (!$dblock->{isv6} && $dblock->masklen > 24) { my @subs = $dblock->split; foreach (@subs) { next if $$recflags{"$_"}; my ($oct) = ($_->addr =~ /(\d+)$/); print $datafile "C"._ZONE($_, 'ZONE.in-addr.arpa', 'r', '.').":$oct.". _ZONE($dblock, 'ZONE.in-addr.arpa', 'r', '.').":$ttl:$stamp:$loc\n" or die $!; $$recflags{"$_"}++; } } } } # Delegation elsif ($type == 65300) { # ALIAS # Implemented as a unique record in parallel with many other # management tools, for clarity VS formal behviour around CNAME # Mainly for "root CNAME" or "apex alias"; limited value for any # other use case since CNAME can generally be used elsewhere. # .arpa zones don't need this hack. shouldn't be allowed into # the DB in the first place, but Just In Case... return if $revrec eq 'y'; my ($iplist) = $self->{dbh}->selectrow_array("SELECT auxdata FROM records WHERE record_id = ?", undef, $recid); $iplist = '' if !$iplist; # shared target-name-to-IP converter my $liveips = $self->_grab_65300($recid, $val); # only update the cache if the live lookup actually returned data if ($liveips && ($iplist ne $liveips)) { $self->{dbh}->do("UPDATE records SET auxdata = ? WHERE record_id = ?", undef, $liveips, $recid); $iplist = $liveips; } # slice the TTL we'll actually publish off the front my @asubs = split ';', $iplist; my $attl = shift @asubs; # output a plain old A or AAAA record for each IP the target name really points to. # in the event that, for whatever reason, no A/AAAA records are available for $val, nothing will be output. foreach my $subip (@asubs) { if ($subip =~ /\d+\.\d+\.\d+\.\d+/) { print $datafile "+$host:$subip:$attl:$stamp:$loc\n" or die $!; } else { $self->_printrec_tiny($datafile, $recid, 'n', $recflags, $self->domainName($self->_hostparent($host)), $host, 28, $subip, $dist, $weight, $port, $attl, $loc, $stamp); } } } # ALIAS ## ## Uncommon types. These will need better UI support Any Day Sometime Maybe(TM). ## elsif ($type == 44) { # SSHFP ($host,$val) = __revswap($host,$val) if $revrec eq 'y'; my ($algo,$fpt,$fp) = split /\s+/, $val; my $rec = sprintf ":$host:44:\\%0.3o\\%0.3o", $algo, $fpt; while (my ($byte) = ($fp =~ /^(..)/) ) { $rec .= sprintf "\\%0.3o", hex($byte); $fp =~ s/^..//; } print $datafile "$rec:$ttl:$stamp:$loc\n" or die $!; } # SSHFP else { # raw record. we don't know what's in here, so we ASS-U-ME the user has # put it in correctly, since either the user is messing directly with the # database, or the record was imported via AXFR # # convert anything not a-zA-Z0-9.- to octal coding ##fixme: add flag to export "unknown" record types - note we'll probably end up # mangling them since they were written to the DB from Net::DNS::RR::->rdatastr. #print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n"; } # "other" } # end _printrec_tiny() ## DNSDB::mailNotify() # Sends notification mail to recipients regarding a DNSDB operation sub mailNotify { my $self = shift; my $dbh = $self->{dbh}; my ($subj,$message) = @_; return if $self->{mailhost} eq 'smtp.example.com'; # do nothing if still using default SMTP host. my $mailer = Net::SMTP->new($self->{mailhost}, Hello => "dnsadmin.$self->{domain}"); my $mailsender = ($self->{mailsender} ? $self->{mailsender} : $self->{mailnotify}); $mailer->mail($mailsender); $mailer->to($self->{mailnotify}); $mailer->data("From: \"$self->{mailname}\" <$mailsender>\n", "To: <$self->{mailnotify}>\n", "Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n", "Subject: $subj\n", "X-Mailer: DNSAdmin v".$DNSDB::VERSION." Notify\n", "Organization: $self->{orgname}\n", "\n$message\n"); $mailer->quit; } # shut Perl up 1;