source: branches/stable/cgi-bin/main.cgi@ 596

#!/usr/bin/perl
# ipdb/cgi-bin/main.cgi
###
# SVN revision info
# $Date: 2013-05-15 22:03:32 +0000 (Wed, 15 May 2013) $
# SVN revision $Rev: 596 $
# Last update by $Author: kdeugau $
###
# Copyright (C) 2004-2011 - Kris Deugau

use strict;             
use warnings;   
use CGI::Carp qw(fatalsToBrowser);
use CGI::Simple;
use HTML::Template;
use DBI;
use POSIX qw(ceil);
use NetAddr::IP;

use Sys::Syslog;

# don't remove!  required for GNU/FHS-ish install from tarball
##uselib##

use CustIDCK;
use MyIPDB;

openlog "IPDB","pid","$IPDB::syslog_facility";

## Environment.  Collect some things, process some things, set some things...

# Collect the username from HTTP auth.  If undefined, we're in
# a test environment, or called without a username.
my $authuser;
if (!defined($ENV{'REMOTE_USER'})) {
  $authuser = '__temptest';
} else {
  $authuser = $ENV{'REMOTE_USER'};
}

# anyone got a better name?  :P
my $thingroot = $ENV{SCRIPT_FILENAME};
$thingroot =~ s|cgi-bin/main.cgi||;

syslog "debug", "$authuser active, $ENV{'REMOTE_ADDR'}";

##fixme there *must* be a better order to do things in so this can go back where it was
# CGI fiddling done here so we can declare %webvar so we can alter $webvar{action}
# to show the right page on DB errors.
# Set up the CGI object...
my $q = new CGI::Simple;
# ... and get query-string params as well as POST params if necessary
$q->parse_query_string;

# Convenience;  saves changing all references to %webvar
##fixme:  tweak for handling <select multiple='y' size=3> (list with multiple selection)
my %webvar = $q->Vars;

# Why not a global DB handle?  (And a global statement handle, as well...)
# Use the connectDB function, otherwise we end up confusing ourselves
my $ip_dbh;
my $errstr;
($ip_dbh,$errstr) = connectDB_My;
if (!$ip_dbh) {
  $webvar{action} = "dberr";
} else {
  initIPDBGlobals($ip_dbh);
}

# Set up some globals
$ENV{HTML_TEMPLATE_ROOT} = $thingroot."templates";

my $header = HTML::Template->new(filename => "header.tmpl");
my $footer = HTML::Template->new(filename => "footer.tmpl");

$header->param(version => $IPDB::VERSION);
$header->param(addperm => $IPDBacl{$authuser} =~ /a/);
$header->param(webpath => $IPDB::webpath);
print "Content-type: text/html\n\n", $header->output;


#main()
my $aclerr;

if(!defined($webvar{action})) {
  $webvar{action} = "index";    #shuts up the warnings.
}

my $page;
if (-e "$ENV{HTML_TEMPLATE_ROOT}/$webvar{action}.tmpl") {
  $page = HTML::Template->new(filename => "$webvar{action}.tmpl", loop_context_vars => 1, global_vars => 1);
} else {
  $page = HTML::Template->new(filename => "dunno.tmpl");
}

if($webvar{action} eq 'index') {
  showSummary();
} elsif ($webvar{action} eq 'addmaster') {
  if ($IPDBacl{$authuser} !~ /a/) {
    $aclerr = 'addmaster';
  }
} elsif ($webvar{action} eq 'newmaster') {

  if ($IPDBacl{$authuser} !~ /a/) {
    $aclerr = 'addmaster';
  } else {
    my $cidr = new NetAddr::IP $webvar{cidr};
    $page->param(cidr => "$cidr");

    my ($code,$msg) = addMaster($ip_dbh, $webvar{cidr});

    if ($code eq 'FAIL') {
      syslog "err", "Could not add master block '$webvar{cidr}' to database: '$msg'";
      $page->param(err => $msg);
    } else {
      syslog "info", "$authuser added master block $webvar{cidr}";
    }

  } # ACL check

} # end add new master

elsif($webvar{action} eq 'showmaster') {
  showMaster();
}
elsif($webvar{action} eq 'showrouted') {
  showRBlock();
}
elsif($webvar{action} eq 'listpool') {
  showPool();
}

# Not modified or added;  just shuffled
elsif($webvar{action} eq 'assign') {
  assignBlock();
}
elsif($webvar{action} eq 'confirm') {
  confirmAssign();
}
elsif($webvar{action} eq 'insert') {
  insertAssign();
}
elsif($webvar{action} eq 'edit') {
  edit();
}
elsif($webvar{action} eq 'update') {
  update();
}
elsif($webvar{action} eq 'delete') {
  remove();
}
elsif($webvar{action} eq 'finaldelete') {
  finalDelete();
}
elsif ($webvar{action} eq 'nodesearch') {
  my $nodelist = getNodeList($ip_dbh);
  $page->param(nodelist => $nodelist);
}

# DB failure.  Can't do much here, really.
elsif ($webvar{action} eq 'dberr') {
  $page->param(errmsg => $errstr);
}

# Default is an error.  It shouldn't be possible to get here unless you're
# randomly feeding in values for webvar{action}.
else {
  my $rnd = rand 500;
  my $boing = sprintf("%.2f", rand 500);
  my @excuses = (
        "Aether cloudy.  Ask again later about $webvar{action}.",
        "The gods are unhappy with your sacrificial $webvar{action}.",
        "Because one of $webvar{action}'s legs are both the same",
        "<b>wibble</b><br>Can't $webvar{action}, the grue will get me!<br>Can't $webvar{action}, the grue will get me!",
        "Hey, man, you've had your free $webvar{action}.  Next one's gonna...  <i>cost</i>....",
        "I ain't done $webvar{action}",
        "Oooo, look!  A flying $webvar{action}!",
        "$webvar{action} too evil, avoiding.",
        "Rocks fall, $webvar{action} dies.",
        "Bit bucket must be emptied before I can $webvar{action}..."
        );
  $page->param(dunno => $excuses[$rnd/50.0]);
}
## Finally! Done with that NASTY "case" emulation!


# Switch to a different template if we've tripped on an ACL error.
# Note that this should only be exercised in development, when
# deeplinked, or when being attacked;  normal ACL handling should
# remove the links a user is not allowed to click on.
if ($aclerr) {
  $page = HTML::Template->new(filename => "aclerror.tmpl");
  $page->param(ipdbfunc => $aclmsg{$aclerr});
}

# Clean up IPDB globals, DB handle, etc.
finish($ip_dbh);

## Do all our printing here so we can generate errors and stick them into the slots in the templates.

# can't do this yet, too many blowups
#print "Content-type: text/html\n\n", $header->output;
$page->param(webpath => $IPDB::webpath);
print $page->output;

# include the admin tools link in the output?
$footer->param(adminlink => ($IPDBacl{$authuser} =~ /A/));
$footer->param(webpath => $IPDB::webpath);
print $footer->output;

# Just in case something waaaayyy down isn't in place
# properly... we exit explicitly.
exit 0;


# Initial display:  Show master blocks with total allocated subnets, total free subnets
sub showSummary {
  my $masterlist = listSummary($ip_dbh);
  $page->param(masterlist => $masterlist);

  $page->param(addmaster => ($IPDBacl{$authuser} =~ /a/) );
} # showSummary


# Display detail on master
# Alrighty then!  We're showing routed blocks within a single master this time.
# We should be able to steal code from showSummary(), and if I'm really smart
# I'll figger a way to munge the two together.  (Once I've done that, everything
# else should follow.  YMMV.)
sub showMaster {

  $page->param(master => $webvar{block});
  $page->param(delmaster => ($IPDBacl{$authuser} =~ /d/));

  my $rlist = listMaster($ip_dbh, $webvar{block});
  $page->param(routedlist => $rlist);

  my $flist = listFree($ip_dbh, $webvar{block});
  $page->param(unrouted => $flist);
  $page->param(mayadd => ($IPDBacl{$authuser} =~ /a/));
} # showMaster


# Display details of a routed block
# Alrighty then!  We're showing allocations within a routed block this time.
# We should be able to steal code from showSummary() and showMaster(), and if
# I'm really smart I'll figger a way to munge all three together.  (Once I've
# done that, everything else should follow.  YMMV.
# This time, we check the database before spewing, because we may
# not have anything useful to spew.
sub showRBlock {

  $page->param(master => $webvar{block});
  $page->param(delrouted => $IPDBacl{$authuser} =~ /d/);

  my $rcity = getRoutedCity($ip_dbh, $webvar{block});
  $page->param(rcity => $rcity);

  my $blist = listRBlock($ip_dbh, $webvar{block});
  $page->param(blocklist => $blist);

  my $flist = listFree($ip_dbh, $webvar{block}, 'y');
  $page->param(unassigned => $flist);
} # showRBlock


# List the IPs used in a pool
sub showPool {

  my $cidr = new NetAddr::IP $webvar{pool};

  $page->param(block => $webvar{pool});
  $page->param(netip => $cidr->addr);
  $cidr++;
  $page->param(gate => $cidr->addr);
  $cidr--;  $cidr--;
  $page->param(bcast => $cidr->addr);
  $page->param(mask => $cidr->mask);

  # Snag pool info for heading
  my $poolinfo = getBlockData($ip_dbh, $webvar{pool});

  $page->param(disptype => $disp_alloctypes{$poolinfo->{type}});
  $page->param(city => $poolinfo->{city});

  # Only display net/gw/bcast if it's a "real" netblock and not a PPP(oE) lunacy
  $page->param(realblock => $poolinfo->{type} =~ /^.d$/);

# probably have to add an "edit IP allocation" link here somewhere.

  my $plist = listPool($ip_dbh, $webvar{pool});
  # technically slightly more efficient to check the ACL in an if () once outside the foreach
  foreach (@{$plist}) {
    $$_{maydel} = $IPDBacl{$authuser} =~ /d/;
  }
  $page->param(poolips => $plist);
} # end showPool


# Show "Add new allocation" page.  Note that the actual page may
# be one of two templates, and the lists come from the database.
sub assignBlock {

  if ($IPDBacl{$authuser} !~ /a/) {
    $aclerr = 'addblock';
    return;
  }

  # hack pthbttt eww
  $webvar{block} = '' if !$webvar{block};

# hmm.  TMPL_IF block and TMPL_ELSE block on these instead?
  $page->param(rowa => 'row'.($webvar{block} eq '' ? 1 : 0));
  $page->param(rowb => 'row'.($webvar{block} eq '' ? 0 : 1));
  $page->param(allocfrom => $webvar{block});    # fb-assign flag, if block is set, we're in fb-assign

  if ($webvar{fbtype}) {

    # Common case, according to reported usage.  Block to assign is specified.
    my $block = new NetAddr::IP $webvar{block};

    $webvar{fbtype} = '' if !$webvar{fbtype};
    if ($webvar{fbtype} eq 'i') {
      my $ipinfo = getBlockData($ip_dbh, $webvar{block}, 'i');
##fixme:  a reversion!  kill it!
my ($iptype,$pool) = $ip_dbh->selectrow_array("SELECT type,pool FROM poolips WHERE ip = ?", undef, ($block));
      $page->param(
        fbip => 1,
        block => $ipinfo->{block},
        fbdisptype => $list_alloctypes{$ipinfo->{type}},
        type => $ipinfo->{type},
        allocfrom => $pool,
        );
    } elsif ($webvar{fbtype} eq 'n') {
      $page->param(
        fbrouted => 1,
        fbdisptype => $list_alloctypes{'rm'},
        type => 'rm',
        block => $block,
        );
    } else {
      # get "primary" alloctypes, since these are all that can correctly be assigned if we're in this branch
      my $tlist = getTypeList($ip_dbh, 'n');
      $tlist->[0]->{sel} = 1;
      $page->param(typelist => $tlist, block => $block);
    }

  } else {

    # Uncommon case, according to reported usage.  Block to assign needs to be found based on criteria.
    my $mlist = getMasterList($ip_dbh, 'c');
    $page->param(masterlist => $mlist);

    my @pops;
    foreach my $pop (@citylist) {
      my %row = (pop => $pop);
      push (@pops, \%row);
    }
    $page->param(pops => \@pops);

    # get all standard alloctypes
    my $tlist = getTypeList($ip_dbh, 'a');
    $tlist->[0]->{sel} = 1;
    $page->param(typelist => $tlist);
  }
  my @cities;
  foreach my $city (@citylist) {
    my %row = (city => $city);
    push (@cities, \%row);
  }
  $page->param(citylist => \@cities);

## node hack
  my $nlist = getNodeList($ip_dbh);
  $page->param(nodelist => $nlist);
## end node hack

  $page->param(privdata => $IPDBacl{$authuser} =~ /s/);

} # assignBlock


# Take info on requested IP assignment and see what we can provide.
sub confirmAssign {
  if ($IPDBacl{$authuser} !~ /a/) {
    $aclerr = 'addblock';
    return;
  }

  my $cidr;
  my $alloc_from;

  # Going to manually validate some items.
  # custid and city are automagic.
  return if !validateInput();

# Several different cases here.
# Static IP vs netblock
#  + Different flavours of static IP
#  + Different flavours of netblock

  if ($webvar{alloctype} =~ /^.i$/ && $webvar{fbassign} ne 'y') {
    my $plist = getPoolSelect($ip_dbh, $webvar{alloctype}, $webvar{pop});
    $page->param(staticip => 1);
    $page->param(poollist => $plist) if $plist;
    $cidr = "Single static IP";
##fixme:  need to handle "no available pools"

  } else { # end show pool options

    if ($webvar{fbassign} && $webvar{fbassign} eq 'y') {
      $cidr = new NetAddr::IP $webvar{block};
      $alloc_from = new NetAddr::IP $webvar{allocfrom};
      $webvar{maskbits} = $cidr->masklen;
    } else { # done with direct freeblocks assignment

      if (!$webvar{maskbits}) {
        $page->param(err => "Please specify a CIDR mask length.");
        return;
      }

##fixme ick, ew, bleh.  gotta handle the failure message generation better.  push it into findAllocateFrom()?
      my $failmsg = "No suitable free block found.<br>\n";
      if ($webvar{alloctype} eq 'rm') {
        $failmsg .= "We do not have a free routeable block of that size.<br>\n".
                "You will have to either route a set of smaller netblocks or a single smaller netblock.";
      } else {
        if ($webvar{alloctype} =~ /^.[pc]$/) {
          $failmsg .= "You will have to route another superblock from one of the<br>\n".
                "master blocks or chose a smaller block size for the pool.";
        } else {
          if (!$webvar{pop}) {
            $page->param(err => 'Please select a POP to route the block from/through.');
            return;
          }
          $failmsg .= "You will have to route another superblock to $webvar{pop}<br>\n".
                "from one of the master blocks or chose a smaller blocksize.";
        }
      }

      $cidr = findAllocateFrom($ip_dbh, $webvar{maskbits}, $webvar{alloctype}, $webvar{city}, $webvar{pop},
        (master => $webvar{allocfrom}, allowpriv => $webvar{allowpriv}) );
      if (!$cidr) {
        $page->param(err => $failmsg);
        return;
      }
      $cidr = new NetAddr::IP $cidr;

# this chunk now specific to "guided" allocation;  freeblock-select can now slice-n-dice on its own.
      $alloc_from = "$cidr";
      # If the block to be allocated is smaller than the one we found,
      # figure out the "real" block to be allocated.
      if ($cidr->masklen() ne $webvar{maskbits}) {
        my $maskbits = $cidr->masklen();
        my @subblocks;
        while ($maskbits++ < $webvar{maskbits}) {
          @subblocks = $cidr->split($maskbits);
        }
        $cidr = $subblocks[0];
      }
    } # check for freeblocks assignment or IPDB-controlled assignment

  } # if ($webvar{alloctype} =~ /^.i$/)

## node hack
  if ($webvar{node} && $webvar{node} ne '-') {
    my $nodename = getNodeName($ip_dbh, $webvar{node});
    $page->param(nodename => $nodename);
    $page->param(nodeid => $webvar{node});
  }
## end node hack

  # Stick in the allocation data
  $page->param(alloc_type => $webvar{alloctype});
  $page->param(typefull => $q->escapeHTML($disp_alloctypes{$webvar{alloctype}}));
  $page->param(alloc_from => $alloc_from);
  $page->param(cidr => $cidr);
  $page->param(city => $q->escapeHTML($webvar{city}));
  $page->param(custid => $webvar{custid});
  $page->param(circid => $q->escapeHTML($webvar{circid}));
  $page->param(desc => $q->escapeHTML($webvar{desc}));

##fixme: find a way to have the displayed copy have <br> substitutions
# for newlines, and the <input> value have either encoded or bare newlines.
# Also applies to privdata.
  $page->param(notes => $q->escapeHTML($webvar{notes},'y'));

  # Check to see if user is allowed to do anything with sensitive data
  my $privdata = '';
  $page->param(privdata => $q->escapeHTML($webvar{privdata},'y'))
        if $IPDBacl{$authuser} =~ /s/;

  # Yay!  This now has it's very own little home.
  $page->param(billinguser => $webvar{userid})
        if $webvar{userid};

##fixme:  this is only needed iff confirm.tmpl and
# confirmRemove.tmpl are merged (quite possible, just
# a little tedious)
  $page->param(action => "insert");

} # end confirmAssign


# Do the work of actually inserting a block in the database.
sub insertAssign {
  if ($IPDBacl{$authuser} !~ /a/) {
    $aclerr = 'addblock';
    return;
  }
  # Some things are done more than once.
  return if !validateInput();

  if (!defined($webvar{privdata})) {
    $webvar{privdata} = '';
  }
  # $code is "success" vs "failure", $msg contains OK for a
  # successful netblock allocation, the IP allocated for static
  # IP, or the error message if an error occurred.

  my ($code,$msg) = allocateBlock($ip_dbh, $webvar{fullcidr}, $webvar{alloc_from},
        $webvar{custid}, $webvar{alloctype}, $webvar{city}, $webvar{desc}, $webvar{notes},
        $webvar{circid}, $webvar{privdata}, $webvar{node});

  if ($code eq 'OK' || $code eq 'WARN') {
    if ($webvar{alloctype} =~ /^.i$/) {
      $msg =~ s|/32||;
      $page->param(staticip => $msg);
      $page->param(custid => $webvar{custid});
      $page->param(billinguser => $webvar{billinguser});
      mailNotify($ip_dbh, "a$webvar{alloctype}", "ADDED: $disp_alloctypes{$webvar{alloctype}} allocation",
        "$disp_alloctypes{$webvar{alloctype}} $msg allocated to customer $webvar{custid}\n".
        "Description: $webvar{desc}\n\nAllocated by: $authuser\n");
    } else {
      my $netblock = new NetAddr::IP $webvar{fullcidr};
      $page->param(fullcidr => $webvar{fullcidr});
      $page->param(alloctype => $disp_alloctypes{$webvar{alloctype}});
      $page->param(custid => $webvar{custid});
      if ($webvar{alloctype} eq 'pr' && $webvar{billinguser}) {
        $page->param(billinguser => $webvar{billinguser});
        $page->param(custid => $webvar{custid});
        $page->param(netaddr => $netblock->addr);
        $page->param(masklen => $netblock->masklen);
      }
      mailNotify($ip_dbh, "a$webvar{alloctype}", "ADDED: $disp_alloctypes{$webvar{alloctype}} allocation",
        "$disp_alloctypes{$webvar{alloctype}} $webvar{fullcidr} allocated to customer $webvar{custid}\n".
        "Description: $webvar{desc}\n\nAllocated by: $authuser\n");
    }
    syslog "notice", "$authuser allocated '$webvar{fullcidr}' to '$webvar{custid}' as ".
        "'$webvar{alloctype}' ($msg)";
  } else {
    syslog "err", "Allocation of '$webvar{fullcidr}' to '$webvar{custid}' as ".
        "'$webvar{alloctype}' by $authuser failed: '$msg'";
    $page->param(err => "Allocation of $webvar{fullcidr} as '$disp_alloctypes{$webvar{alloctype}}'".
        " failed:<br>\n$msg\n");
  }

} # end insertAssign()


# Does some basic checks on common input data to make sure nothing
# *really* weird gets in to the database through this script.
# Does NOT do complete input validation!!!
sub validateInput {
  if ($webvar{city} eq '-') {
    $page->param(err => 'Please choose a city');
    return;
  }

  # Alloctype check.
  chomp $webvar{alloctype};
  if (!grep /$webvar{alloctype}/, keys %disp_alloctypes) {
    # Danger! Danger!  alloctype should ALWAYS be set by a dropdown.  Anyone
    # managing to call things in such a way as to cause this deserves a cryptic error.
    $page->param(err => 'Invalid alloctype');
    return;
  }

  # CustID check
  # We have different handling for customer allocations and "internal" or "our" allocations
  if ($def_custids{$webvar{alloctype}} eq '') {
    if (!$webvar{custid}) {
      $page->param(err => 'Please enter a customer ID.');
      return;
    }
    # Crosscheck with billing.
    my $status = CustIDCK->custid_exist($webvar{custid});
    if ($CustIDCK::Error) {
      $page->param(err => "Error verifying customer ID: ".$CustIDCK::ErrMsg);
      return;
    }
    if (!$status) {
      $page->param(err => "Customer ID not valid.  Make sure the Customer ID ".
        "is correct.<br>\nUse STAFF for staff static IPs, and $IPDB::defcustid for any other ".
        "non-customer assignments.");
      return;
    }
#    print "<!-- [ In validateInput().  Insert customer ID cross-check here. ] -->\n";
  } else {
    # New!  Improved!  And now Loaded From The Database!!
    if ((!$webvar{custid}) || ($webvar{custid} ne 'STAFF')) {
      $webvar{custid} = $def_custids{$webvar{alloctype}};
    }
  }

  # Check POP location
  my $flag;
  if ($webvar{alloctype} eq 'rm') {
    $flag = 'for a routed netblock';
    foreach (@poplist) {
      if (/^$webvar{city}$/) {
        $flag = 'n';
        last;
      }
    }
  } else {
    $flag = 'n';
##fixme:  hook to force-set POP or city on certain alloctypes
# if ($webvar{alloctype =~ /foo,bar,bz/ { $webvar{pop} = 'blah'; }
    if ($webvar{pop} && $webvar{pop} =~ /^-$/) {
      $flag = 'to route the block from/through';
    }
  }

  # if the alloctype has a restricted city/POP list as determined above,
  # and the reqested city/POP does not match that list, complain
  if ($flag ne 'n') {
    $page->param(err => "Please choose a valid POP location $flag.  Valid ".
        "POP locations are currently:<br>\n".join (" - ", @poplist));
    return;
  }

  return 'OK';
} # end validateInput


# Displays details of a specific allocation in a form
# Allows update/delete
# action=edit
sub edit {

  # snag block info from db
  my $blockinfo = getBlockData($ip_dbh, $webvar{block});

  # Clean up extra whitespace on alloc type.  Mainly a legacy-data cleanup.
  $blockinfo->{type} =~ s/\s//;

  $page->param(block => $webvar{block});

  $page->param(custid   => $blockinfo->{custid});
  $page->param(city     => $blockinfo->{city});
  $page->param(circid   => $blockinfo->{circuitid});
  $page->param(desc     => $blockinfo->{description});
  $page->param(notes    => $blockinfo->{notes});

##fixme The check here should be built from the database
# Need to expand to support pool types too
  if ($blockinfo->{type} =~ /^.[ne]$/ && $IPDBacl{$authuser} =~ /c/) {
    $page->param(changetype => 1);
    $page->param(alloctype => [
                { selme => ($blockinfo->{type} eq 'me'), type => "me", disptype => "Dialup netblock" },
                { selme => ($blockinfo->{type} eq 'de'), type => "de", disptype => "Dynamic DSL netblock" },
                { selme => ($blockinfo->{type} eq 'ce'), type => "ce", disptype => "Dynamic cable netblock" },
                { selme => ($blockinfo->{type} eq 'we'), type => "we", disptype => "Dynamic wireless netblock" },
                { selme => ($blockinfo->{type} eq 'cn'), type => "cn", disptype => "Customer netblock" },
                { selme => ($blockinfo->{type} eq 'en'), type => "en", disptype => "End-use netblock" },
                { selme => ($blockinfo->{type} eq 'in'), type => "in", disptype => "Internal netblock" },
                ]
        );
  } else {
    $page->param(disptype => $disp_alloctypes{$blockinfo->{type}});
    $page->param(type => $blockinfo->{type});
  }

## node hack
  my ($nodeid,$nodename) = getNodeInfo($ip_dbh, $webvar{block});
  $page->param(havenodeid => $nodeid);

  if ($blockinfo->{type} eq 'fr' || $blockinfo->{type} eq 'bi') {
    $page->param(typesupportsnodes => 1);
    $page->param(nodename => $nodename);

##fixme:  this whole hack needs cleanup and generalization for all alloctypes
##fixme:  arguably a bug that presence of a nodeid implies it can be changed..
#  but except for manual database changes, only the two types fr and bi can
#  (currently) have a nodeid set in the first place.
    if ($IPDBacl{$authuser} =~ /c/) {
      my $nlist = getNodeList($ip_dbh);
      foreach (@{$nlist}) {
        $$_{selme} = ($$_{node_id} == $nodeid);
      }
      $page->param(nodelist => $nlist);
    }
  }
## end node hack

  my ($lastmod,undef) = split /\s+/, $blockinfo->{lastmod};
  $page->param(lastmod => $lastmod);

  # not happy with the upside-down logic, but...
  $page->param(swipable => $blockinfo->{type} !~ /.i/);
  $page->param(swip => $blockinfo->{swip} ne 'n') if $blockinfo->{swip};

  # Check to see if we can display sensitive data
  $page->param(nocling => $IPDBacl{$authuser} =~ /s/);
  $page->param(privdata => $blockinfo->{privdata});

  # ACL trickery - these two template booleans control the presence of all form/input tags
  $page->param(maychange => $IPDBacl{$authuser} =~ /c/);
  $page->param(maydel => $IPDBacl{$authuser} =~ /d/);

} # edit()


# Stuff new info about a block into the db
# action=update
sub update {
  if ($IPDBacl{$authuser} !~ /c/) {
    $aclerr = 'updateblock';
    return;
  }

  # Make sure incoming data is in correct format - custID among other things.
  return if !validateInput;

  $webvar{swip} = 'n' if !$webvar{swip};

  my %updargs = (
        custid          => $webvar{custid},
        city            => $webvar{city},
        description     => $webvar{desc},
        notes           => $webvar{notes},
        circuitid       => $webvar{circid},
        block           => $webvar{block},
        type            => $webvar{alloctype},
        swip            => $webvar{swip},
        );

  # Semioptional values
  $updargs{privdata} = $webvar{privdata} if $IPDBacl{$authuser} =~ /s/;
  $updargs{node} = $webvar{node} if $webvar{node};

  my ($code,$msg) = updateBlock($ip_dbh, %updargs);

  if ($code eq 'FAIL') {
    syslog "err", "$authuser could not update block/IP '$webvar{block}': '$msg'";
    $page->param(err => "Could not update block/IP $webvar{block}: $msg");
    return;
  }

  # If we get here, the operation succeeded.
  syslog "notice", "$authuser updated $webvar{block}";
##fixme:  log details of the change?  old way is in the .debug stream anyway.
##fixme:  need to wedge something in to allow "update:field" notifications
## hmm.  how to tell what changed?  O_o
mailNotify($ip_dbh, 's:swi', "SWIPed: $disp_alloctypes{$webvar{alloctype}} $webvar{block}",
        "$webvar{block} had SWIP status changed to \"Yes\" by $authuser") if $webvar{swip} eq 'on';

## node hack
  if ($webvar{node} && $webvar{node} ne '-') {
    my $nodename = getNodeName($ip_dbh, $webvar{node});
    $page->param(nodename => $nodename);
  }
## end node hack

  # Link back to browse-routed or list-pool page on "Update complete" page.
  my $cblock;
  if (my $pooltype = ($webvar{alloctype} =~ /^(.)i$/) ) {
    $page->param(backpool => 1);
    $cblock = ipParent($ip_dbh, $webvar{block});
  } else {
    $cblock = blockParent($ip_dbh, $webvar{block});
  }
  $page->param(backblock => $cblock->{cidr});

  # Do some HTML fiddling here instead of using ESCAPE=HTML in the template,
  # because otherwise we can't convert \n to <br>.  *sigh*
  $webvar{notes} = $q->escapeHTML($webvar{notes});      # escape first...
  $webvar{notes} =~ s/\n/<br>\n/;                       # ... then convert newlines
  $webvar{privdata} = ($webvar{privdata} ? $q->escapeHTML($webvar{privdata}) : "&nbsp;");
  $webvar{privdata} =~ s/\n/<br>\n/;

  $page->param(cidr => $webvar{block});
  $page->param(city => $webvar{city});
  $page->param(disptype => $disp_alloctypes{$webvar{alloctype}});
  $page->param(custid => $webvar{custid});
  $page->param(swip => $webvar{swip} eq 'on' ? 'Yes' : 'No');
  $page->param(circid => $webvar{circid});
  $page->param(desc => $webvar{desc});
  $page->param(notes => $webvar{notes});
  $page->param(privdata => $webvar{privdata})
        if $IPDBacl{$authuser} =~ /s/;

} # update()


# Delete an allocation.
sub remove {
  if ($IPDBacl{$authuser} !~ /d/) {
    $aclerr = 'delblock';
    return;
  }

  # Serves'em right for getting here...
  if (!defined($webvar{block})) {
    $page->param(err => "Can't delete a block that doesn't exist");
    return;
  }

  my $blockdata;

  if ($webvar{alloctype} eq 'rm') {

    $blockdata->{block} = $webvar{block};
    $blockdata->{city} = getRoutedCity($ip_dbh, $webvar{block});
    $blockdata->{custid} = "N/A";
    $blockdata->{type} = $webvar{alloctype};
    $blockdata->{circuitid} = "N/A";
    $blockdata->{description} = "N/A";
    $blockdata->{notes} = "N/A";
    $blockdata->{privdata} = "N/A";

  } elsif ($webvar{alloctype} eq 'mm') {

    $blockdata->{block} = $webvar{block};
    $blockdata->{city} = "N/A";
    $blockdata->{custid} = "N/A";
    $blockdata->{type} = $webvar{alloctype};
    $blockdata->{circuitid} = "N/A";
    $blockdata->{description} = "N/A";
    $blockdata->{notes} = "N/A";
    $blockdata->{privdata} = "N/A";

  } else {

    $blockdata = getBlockData($ip_dbh, $webvar{block})

  } # end cases for different alloctypes

  $page->param(block => $blockdata->{block});
  $page->param(disptype => $disp_alloctypes{$blockdata->{type}});
  $page->param(type => $blockdata->{type});
  $page->param(city => $blockdata->{city});
  $page->param(custid => $blockdata->{custid});
  $page->param(circid => $blockdata->{circuitid});
  $page->param(desc => $blockdata->{description});
  $blockdata->{notes} = $q->escapeHTML($blockdata->{notes});
  $blockdata->{notes} =~ s/\n/<br>\n/;
  $page->param(notes => $blockdata->{notes});
  $blockdata->{privdata} = $q->escapeHTML($blockdata->{privdata});
  $blockdata->{privdata} = '&nbsp;' if !$blockdata->{privdata};
  $blockdata->{privdata} =~ s/\n/<br>\n/;
  $page->param(privdata => $blockdata->{privdata}) if $IPDBacl{$authuser} =~ /s/;
  $page->param(delpool => $blockdata->{type} =~ /^.[pd]$/);

} # end remove()


# Delete an allocation.  Return it to the freeblocks table;  munge
# data as necessary to keep as few records as possible in freeblocks
# to prevent weirdness when allocating blocks later.
# Remove IPs from pool listing if necessary
sub finalDelete {
  if ($IPDBacl{$authuser} !~ /d/) {
    $aclerr = 'delblock';
    return;
  }

  # need to retrieve block data before deleting so we can notify on that
  my $blockinfo = getBlockData($ip_dbh, $webvar{block});

  my ($code,$msg) = deleteBlock($ip_dbh, $webvar{block}, $webvar{alloctype});

  $page->param(block => $webvar{block});
  if ($code eq 'OK') {
    syslog "notice", "$authuser deallocated '$webvar{alloctype}'-type netblock $webvar{block} ".
        $blockinfo->{custid}.", ".$blockinfo->{city}.", desc='".$blockinfo->{description}."'";
    mailNotify($ip_dbh, 'da', "REMOVED: $disp_alloctypes{$webvar{alloctype}} $webvar{block}",
        "$disp_alloctypes{$webvar{alloctype}} $webvar{block} deallocated by $authuser\n".
        "CustID: ".$blockinfo->{custid}."\nCity: ".$blockinfo->{city}.
        "\nDescription: ".$blockinfo->{description}."\n");
  } else {
    $page->param(failmsg => $msg);
    if ($webvar{alloctype} =~ /^.i$/) {
      syslog "err", "$authuser could not deallocate static IP '$webvar{block}': '$msg'";
    } else {
      syslog "err", "$authuser could not deallocate netblock '$webvar{block}': '$msg'";
      $page->param(netblock => 1);
    }
  }

} # finalDelete