source: branches/dns/cgi-bin/IPDB.pm @ 276

Last change on this file since 276 was 276, checked in by Kris Deugau, 17 years ago

/branches/dns

rDNS seeding added to one case of "real" netblock allocation

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1# ipdb/cgi-bin/IPDB.pm
2# Contains functions for IPDB - database access, subnet mangling, block allocation, etc
3###
4# SVN revision info
5# $Date: 2005-08-10 21:48:18 +0000 (Wed, 10 Aug 2005) $
6# SVN revision $Rev: 276 $
7# Last update by $Author: kdeugau $
8###
9# Copyright (C) 2004,2005 - Kris Deugau
10
11package IPDB;
12
13use strict;
14use warnings;
15use Exporter;
16use DBI;
17use Net::SMTP;
18use POSIX;
19use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
20
21$VERSION        = 2.0;
22@ISA            = qw(Exporter);
23@EXPORT_OK    = qw(
24        %disp_alloctypes %list_alloctypes %def_custids @citylist @poplist @masterblocks
25        %allocated %free %routed %bigfree %IPDBacl
26        &initIPDBGlobals &connectDB &finish &checkDBSanity &allocateBlock &deleteBlock
27        &mailNotify
28        );
29
30@EXPORT         = (); # Export nothing by default.
31%EXPORT_TAGS    = ( ALL => [qw(
32                %disp_alloctypes %list_alloctypes %def_custids @citylist @poplist
33                @masterblocks %allocated %free %routed %bigfree %IPDBacl
34                &initIPDBGlobals &connectDB &finish &checkDBSanity &allocateBlock
35                &deleteBlock &mailNotify
36                )]
37        );
38
39##
40## Global variables
41##
42our %disp_alloctypes;
43our %list_alloctypes;
44our %def_custids;
45our @citylist;
46our @poplist;
47our @masterblocks;
48our %allocated;
49our %free;
50our %routed;
51our %bigfree;
52our %IPDBacl;
53
54# Let's initialize the globals.
55## IPDB::initIPDBGlobals()
56# Initialize all globals.  Takes a database handle, returns a success or error code
57sub initIPDBGlobals {
58  my $dbh = $_[0];
59  my $sth;
60
61  # Initialize alloctypes hashes
62  $sth = $dbh->prepare("select type,listname,dispname,listorder,def_custid from alloctypes order by listorder");
63  $sth->execute;
64  while (my @data = $sth->fetchrow_array) {
65    $disp_alloctypes{$data[0]} = $data[2];
66    $def_custids{$data[0]} = $data[4];
67    if ($data[3] < 900) {
68      $list_alloctypes{$data[0]} = $data[1];
69    }
70  }
71
72  # City and POP listings
73  $sth = $dbh->prepare("select city,routing from cities order by city");
74  $sth->execute;
75  return (undef,$sth->errstr) if $sth->err;
76  while (my @data = $sth->fetchrow_array) {
77    push @citylist, $data[0];
78    if ($data[1] eq 'y') {
79      push @poplist, $data[0];
80    }
81  }
82
83  # Master block list
84  $sth = $dbh->prepare("select cidr from masterblocks order by cidr");
85  $sth->execute;
86  return (undef,$sth->errstr) if $sth->err;
87  for (my $i=0; my @data = $sth->fetchrow_array(); $i++) {
88    $masterblocks[$i] = new NetAddr::IP $data[0];
89    $allocated{"$masterblocks[$i]"} = 0;
90    $free{"$masterblocks[$i]"} = 0;
91    $bigfree{"$masterblocks[$i]"} = 128; # Larger number means smaller block.
92                                        # Set to 128 to prepare for IPv6
93    $routed{"$masterblocks[$i]"} = 0;
94  }
95
96  # Load ACL data.  Specific username checks are done at a different level.
97  $sth = $dbh->prepare("select username,acl from users");
98  $sth->execute;
99  return (undef,$sth->errstr) if $sth->err;
100  while (my @data = $sth->fetchrow_array) {
101    $IPDBacl{$data[0]} = $data[1];
102  }
103
104  return (1,"OK");
105} # end initIPDBGlobals
106
107
108## IPDB::connectDB()
109# Creates connection to IPDB.
110# Requires the database name, username, and password.
111# Returns a handle to the db.
112# Set up for a PostgreSQL db;  could be any transactional DBMS with the
113# right changes.
114# This definition should be sub connectDB($$$) to be technically correct,
115# but this breaks.  GRR.
116sub connectDB {
117  my ($dbname,$user,$pass) = @_;
118  my $dbh;
119  my $DSN = "DBI:Pg:dbname=$dbname";
120#  my $user = 'ipdb';
121#  my $pw   = 'ipdbpwd';
122
123# Note that we want to autocommit by default, and we will turn it off locally as necessary.
124# We may not want to print gobbledygook errors;  YMMV.  Have to ponder that further.
125  $dbh = DBI->connect($DSN, $user, $pass, {
126        AutoCommit => 1,
127        PrintError => 0
128        })
129    or return (undef, $DBI::errstr) if(!$dbh);
130
131# Return here if we can't select.  Note that this indicates a
132# problem executing the select.
133  my $sth = $dbh->prepare("select type from alloctypes");
134  $sth->execute();
135  return (undef,$DBI::errstr) if ($sth->err);
136
137# See if the select returned anything (or null data).  This should
138# succeed if the select executed, but...
139  $sth->fetchrow();
140  return (undef,$DBI::errstr)  if ($sth->err);
141
142# If we get here, we should be OK.
143  return ($dbh,"DB connection OK");
144} # end connectDB
145
146
147## IPDB::finish()
148# Cleans up after database handles and so on.
149# Requires a database handle
150sub finish {
151  my $dbh = $_[0];
152  $dbh->disconnect;
153} # end finish
154
155
156## IPDB::checkDBSanity()
157# Quick check to see if the db is responding.  A full integrity
158# check will have to be a separate tool to walk the IP allocation trees.
159sub checkDBSanity {
160  my ($dbh) = $_[0];
161
162  if (!$dbh) {
163    print "No database handle, or connection has been closed.";
164    return -1;
165  } else {
166    # it connects, try a stmt.
167    my $sth = $dbh->prepare("select type from alloctypes");
168    my $err = $sth->execute();
169
170    if ($sth->fetchrow()) {
171      # all is well.
172      return 1;
173    } else {
174      print "Connected to the database, but could not execute test statement.  ".$sth->errstr();
175      return -1;
176    }
177  }
178  # Clean up after ourselves.
179#  $dbh->disconnect;
180} # end checkDBSanity
181
182
183## IPDB::allocateBlock()
184# Does all of the magic of actually allocating a netblock
185# Requires database handle, block to allocate, custid, type, city,
186#       description, notes, circuit ID, block to allocate from,
187#       rDNS for the block/IP
188# Returns a success code and optional error message.
189sub allocateBlock {
190  my ($dbh,undef,undef,$custid,$type,$city,$desc,$notes,$circid,$rdns) = @_;
191 
192  my $cidr = new NetAddr::IP $_[1];
193  my $alloc_from = new NetAddr::IP $_[2];
194  my $sth;
195
196  # To contain the error message, if any.
197  my $msg = "Unknown error allocating $cidr as '$type'";
198
199  # Enable transactions and error handling
200  local $dbh->{AutoCommit} = 0; # These need to be local so we don't
201  local $dbh->{RaiseError} = 1; # step on our toes by accident.
202
203  if ($type =~ /^.i$/) {
204    $msg = "Unable to assign static IP $cidr to $custid";
205    eval {
206      # We have to do this in two parts because otherwise we lose
207      # the ability to return the IP assigned.  Should that change,
208      # the commented SQL statement below may become usable.
209# update poolips set custid='$custid',city='$city',available='n',
210#       description='$desc',notes='$notes',circuitid='$circid'
211#       where ip=(select ip from poolips where pool='$alloc_from'
212#       and available='y' order by ip limit 1);
213
214      $sth = $dbh->prepare("select ip from poolips where pool='$alloc_from'".
215        " and available='y' order by ip");
216      $sth->execute;
217
218      my @data = $sth->fetchrow_array;
219      $cidr = $data[0];  # $cidr is already declared when we get here!
220
221      $sth = $dbh->prepare("update poolips set custid='$custid',".
222        "city='$city',available='n',description='$desc',notes='$notes',".
223        "circuitid='$circid'".
224        " where ip='$cidr'");
225      $sth->execute;
226
227      # rDNS change is an update as the pool should have set "unassigned..."
228      # rDNS on all IPs already.
229      $msg = "Unable to update rDNS assigning $cidr to $custid";
230      $sth = $dbh->prepare("update dns set hostname='$rdns',auto='n' where ip='$cidr'");
231      $sth->execute;
232
233      $dbh->commit;
234    };
235    if ($@) {
236      $msg .= ": '".$sth->errstr."'";
237      eval { $dbh->rollback; };
238      return ('FAIL',$msg);
239    } else {
240      return ('OK',"$cidr");
241    }
242
243  } else { # end IP-from-pool allocation
244
245    if ($cidr == $alloc_from) {
246      # Easiest case- insert in one table, delete in the other, and go home.  More or less.
247      # insert into allocations values (cidr,custid,type,city,desc) and
248      # delete from freeblocks where cidr='cidr'
249      # For data safety on non-transaction DBs, we delete first.
250
251      eval {
252        $msg = "Unable to allocate $cidr as '$disp_alloctypes{$type}'";
253        if ($type eq 'rm') {
254          $sth = $dbh->prepare("update freeblocks set routed='y',city='$city'".
255            " where cidr='$cidr'");
256          $sth->execute;
257          $sth = $dbh->prepare("insert into routed (cidr,maskbits,city)".
258                " values ('$cidr',".$cidr->masklen.",'$city')");
259          $sth->execute;
260        } else {
261          # common stuff for end-use, dialup, dynDSL, pools, etc, etc.
262
263          # special case - block is a container/"reserve" block
264          if ($type =~ /^(.)c$/) {
265            $sth = $dbh->prepare("update freeblocks set routed='$1' where cidr='$cidr'");
266            $sth->execute;
267          } else {
268            # "normal" case
269            $sth = $dbh->prepare("delete from freeblocks where cidr='$cidr'");
270            $sth->execute;
271          }
272          $sth = $dbh->prepare("insert into allocations".
273                " (cidr,custid,type,city,description,notes,maskbits,circuitid)".
274                " values ('$cidr','$custid','$type','$city','$desc','$notes',".
275                $cidr->masklen.",'$circid')");
276          $sth->execute;
277
278          # And initialize the pool, if necessary
279          # PPPoE pools (currently dialup, DSL, and WiFi) get all IPs made available
280          # "DHCP" or "real-subnet" pools have the net, gw, and bcast IPs removed.
281          if ($type =~ /^.p$/) {
282            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
283            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"all");
284            die $rmsg if $code eq 'FAIL';
285          } elsif ($type =~ /^.d$/) {
286            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
287            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"normal");
288            die $rmsg if $code eq 'FAIL';
289          } else {
290            # This is an else case, rather than continuing, because we've already stuffed
291            # DNS entries in for pools inside initPool() called above.  This section deals
292            # with non-pool blocks.
293            # Note that we should really NetAddr::IP::split() this block if it's /15 or
294            # larger so as to not break things by running out of memory.  Or something.
295
296# Check initPool() for a better(?) way to do this - also somewhat more complete
297            $msg = "Failed to seed rDNS entries allocating $cidr to $custid";
298            my $sth2 = $dbh->prepare("insert into dns (ip,hostname) values (?, ?)");
299            my @iplist = $cidr->hostenum;
300            foreach my $ip (@iplist) {
301              $sth2->execute("$ip",$rdns);
302            }
303          }
304
305        } # routing vs non-routing netblock
306
307        $dbh->commit;
308      }; # end of eval
309      if ($@) {
310        $msg .= ": ".$@;
311        eval { $dbh->rollback; };
312        return ('FAIL',$msg);
313      } else {
314        return ('OK',"OK");
315      }
316
317    } else { # cidr != alloc_from
318
319      # Hard case.  Allocation is smaller than free block.
320      my $wantmaskbits = $cidr->masklen;
321      my $maskbits = $alloc_from->masklen;
322
323      my @newfreeblocks;        # Holds free blocks generated from splitting the source freeblock.
324
325      # This determines which blocks will be left "free" after allocation.  We take the
326      # block we're allocating from, and split it in half.  We see which half the wanted
327      # block is in, and repeat until the wanted block is equal to one of the halves.
328      my $i=0;
329      my $tmp_from = $alloc_from;       # So we don't munge $alloc_from
330      while ($maskbits++ < $wantmaskbits) {
331        my @subblocks = $tmp_from->split($maskbits);
332        $newfreeblocks[$i++] = (($cidr->within($subblocks[0])) ? $subblocks[1] : $subblocks[0]);
333        $tmp_from = ( ($cidr->within($subblocks[0])) ? $subblocks[0] : $subblocks[1] );
334      } # while
335
336      # Begin SQL transaction block
337      eval {
338        $msg = "Unable to allocate $cidr as '$disp_alloctypes{$type}'";
339
340        # Delete old freeblocks entry
341        $sth = $dbh->prepare("delete from freeblocks where cidr='$alloc_from'");
342        $sth->execute();
343
344        # now we have to do some magic for routing blocks
345        if ($type eq 'rm') {
346
347          # Insert the new freeblocks entries
348          # Note that non-routed blocks are assigned to <NULL>
349          # and use the default value for the routed column ('n')
350          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city)".
351                " values (?, ?, '<NULL>')");
352          foreach my $block (@newfreeblocks) {
353            $sth->execute("$block", $block->masklen);
354          }
355
356          # Insert the entry in the routed table
357          $sth = $dbh->prepare("insert into routed (cidr,maskbits,city)".
358                " values ('$cidr',".$cidr->masklen.",'$city')");
359          $sth->execute;
360          # Insert the (almost) same entry in the freeblocks table
361          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
362                " values ('$cidr',".$cidr->masklen.",'$city','y')");
363          $sth->execute;
364
365        } else { # done with alloctype == rm
366
367          # Insert the new freeblocks entries
368          # Along with some more HairyPerl(TM) in case we're inserting a
369          # subblock (.r) allocation
370          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
371                " values (?, ?, (select city from routed where cidr >>= '$cidr'),'".
372                (($type =~ /^(.)r$/) ? "$1" : 'y')."')");
373          foreach my $block (@newfreeblocks) {
374            $sth->execute("$block", $block->masklen);
375          }
376          # Special-case for reserve/"container" blocks - generate
377          # the "extra" freeblocks entry for the container
378          if ($type =~ /^(.)c$/) {
379            $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
380                " values ('$cidr',".$cidr->masklen.",'$city','$1')");
381            $sth->execute;
382          }
383          # Insert the allocations entry
384          $sth = $dbh->prepare("insert into allocations (cidr,custid,type,city,".
385                "description,notes,maskbits,circuitid)".
386                " values ('$cidr','$custid','$type','$city','$desc','$notes',".
387                $cidr->masklen.",'$circid')");
388          $sth->execute;
389
390          # And initialize the pool, if necessary
391          # PPPoE pools (currently dialup, DSL, and WiFi) get all IPs made available
392          # "DHCP" or "real-subnet" pools have the net, gw, and bcast IPs removed.
393          if ($type =~ /^.p$/) {
394            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
395            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"all");
396            die $rmsg if $code eq 'FAIL';
397          } elsif ($type =~ /^.d$/) {
398            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
399            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"normal");
400            die $rmsg if $code eq 'FAIL';
401          }
402
403        } # done with netblock alloctype != rm
404
405        $dbh->commit;
406      }; # end eval
407      if ($@) {
408        $msg .= ": ".$@;
409        eval { $dbh->rollback; };
410        return ('FAIL',$msg);
411      } else {
412        return ('OK',"OK");
413      }
414
415    } # end fullcidr != alloc_from
416
417  } # end static-IP vs netblock allocation
418
419} # end allocateBlock()
420
421
422## IPDB::initPool()
423# Initializes a pool
424# Requires a database handle, the pool CIDR, type, city, and a parameter
425# indicating whether the pool should allow allocation of literally every
426# IP, or if it should reserve network/gateway/broadcast IPs
427# Note that this is NOT done in a transaction, that's why it's a private
428# function and should ONLY EVER get called from allocateBlock()
429# We also do the rDNS for the pool here to save some sanity.
430sub initPool {
431  my ($dbh,undef,$type,$city,$class,$rdns) = @_;
432  my $pool = new NetAddr::IP $_[1];
433
434##fixme Need to just replace 2nd char of type with i rather than capturing 1st char of type
435  $type =~ s/[pd]$/i/;
436  my $sth;
437  my $msg;
438
439  # Trap errors so we can pass them back to the caller.  Even if the
440  # caller is only ever supposed to be local, and therefore already
441  # trapping errors.  >:(
442  local $dbh->{AutoCommit} = 0; # These need to be local so we don't
443  local $dbh->{RaiseError} = 1; # step on our toes by accident.
444
445  eval {
446    # have to insert all pool IPs into poolips table as "unallocated".
447    $sth = $dbh->prepare("insert into poolips (pool,ip,custid,city,type)".
448        " values ('$pool', ?, '6750400', '$city', '$type')");
449    my $sth2 = $dbh->prepare("insert into dns (ip,hostname) values (?, ?)");
450    my @poolip_list = $pool->hostenum;
451    if ($class eq 'all') { # (DSL-ish block - *all* IPs available
452      if ($pool->addr !~ /\.0$/) {      # .0 causes weirdness.
453        $sth->execute($pool->addr);
454        # Insert rDNS entry
455        $sth2->execute($pool->addr,subst_rDNS($rdns,$pool->addr));
456      }
457      for (my $i=0; $i<=$#poolip_list; $i++) {
458        $sth->execute($poolip_list[$i]->addr);
459        # Insert rDNS entry
460        $sth2->execute($poolip_list[$i]->addr,subst_rDNS($rdns,$poolip_list[$i]->addr));
461      }
462      $pool--;
463      if ($pool->addr !~ /\.255$/) {    # .255 can cause weirdness.
464        $sth->execute($pool->addr);
465        # Insert rDNS entry
466        $sth2->execute($pool->addr,subst_rDNS($rdns,$pool->addr));
467      }
468    } else { # (real netblock)
469      for (my $i=1; $i<=$#poolip_list; $i++) {
470        $sth->execute($poolip_list[$i]->addr);
471        # Insert rDNS entry
472        $sth2->execute($poolip_list[$i]->addr,
473                subst_rDNS($rdns,$poolip_list[$i]->addr));
474      }
475    }
476  };
477  if ($@) {
478    $msg = "'".$sth->errstr."'";
479    eval { $dbh->rollback; };
480    return ('FAIL',$msg);
481  } else {
482    return ('OK',"OK");
483  }
484} # end initPool()
485
486
487## IPDB::deleteBlock()
488# Removes an allocation from the database, including deleting IPs
489# from poolips and recombining entries in freeblocks if possible
490# Also handles "deleting" a static IP allocation, and removal of a master
491# Requires a database handle, the block to delete, and the type of block
492sub deleteBlock {
493  my ($dbh,undef,$type) = @_;
494  my $cidr = new NetAddr::IP $_[1];
495
496  my $sth;
497
498  # To contain the error message, if any.
499  my $msg = "Unknown error deallocating $type $cidr";
500  # Enable transactions and exception-on-errors... but only for this sub
501  local $dbh->{AutoCommit} = 0;
502  local $dbh->{RaiseError} = 1;
503
504  # First case.  The "block" is a static IP
505  # Note that we still need some additional code in the odd case
506  # of a netblock-aligned contiguous group of static IPs
507  if ($type =~ /^.i$/) {
508
509    eval {
510      $msg = "Unable to deallocate $disp_alloctypes{$type} $cidr";
511      $sth = $dbh->prepare("update poolips set custid='6750400',available='y',".
512        "city=(select city from allocations where cidr >>= '$cidr'),".
513        "description='',notes='',circuitid='' where ip='$cidr'");
514      $sth->execute;
515      $dbh->commit;
516    };
517    if ($@) {
518      eval { $dbh->rollback; };
519      return ('FAIL',$msg);
520    } else {
521      return ('OK',"OK");
522    }
523
524  } elsif ($type eq 'mm') { # end alloctype =~ /.i/
525
526    $msg = "Unable to delete master block $cidr";
527    eval {
528      $sth = $dbh->prepare("delete from masterblocks where cidr='$cidr'");
529      $sth->execute;
530      $sth = $dbh->prepare("delete from freeblocks where cidr='$cidr'");
531      $sth->execute;
532      $dbh->commit;
533    };
534    if ($@) {
535      eval { $dbh->rollback; };
536      return ('FAIL', $msg);
537    } else {
538      return ('OK',"OK");
539    }
540
541  } else { # end alloctype master block case
542
543    ## This is a big block; but it HAS to be done in a chunk.  Any removal
544    ## of a netblock allocation may result in a larger chunk of free
545    ## contiguous IP space - which may in turn be combined into a single
546    ## netblock rather than a number of smaller netblocks.
547
548    eval {
549
550      if ($type eq 'rm') {
551        $msg = "Unable to remove routing allocation $cidr";
552        $sth = $dbh->prepare("delete from routed where cidr='$cidr'");
553        $sth->execute;
554        # Make sure block getting deleted is properly accounted for.
555        $sth = $dbh->prepare("update freeblocks set routed='n',city='<NULL>'".
556                " where cidr='$cidr'");
557        $sth->execute;
558        # Set up query to start compacting free blocks.
559        $sth = $dbh->prepare("select cidr from freeblocks where ".
560                "maskbits<=".$cidr->masklen." and routed='n' order by maskbits desc");
561
562      } else { # end alloctype routing case
563
564        # Delete all allocations within the block being deleted.  This is
565        # deliberate and correct, and removes the need to special-case
566        # removal of "container" blocks.
567        $sth = $dbh->prepare("delete from allocations where cidr <<='$cidr'");
568        $sth->execute;
569
570        # Special case - delete pool IPs
571        if ($type =~ /^.[pd]$/) {
572          # We have to delete the IPs from the pool listing.
573          $sth = $dbh->prepare("delete from poolips where pool='$cidr'");
574          $sth->execute;
575        }
576
577        # Set up query for compacting free blocks.
578        $sth = $dbh->prepare("select cidr from freeblocks where cidr <<= ".
579                "(select cidr from routed where cidr >>= '$cidr') ".
580                " and maskbits<=".$cidr->masklen.
581                " and routed='".(($type =~ /^(.)r$/) ? '$1' : 'y').
582                "' order by maskbits desc");
583
584      } # end alloctype general case
585
586      # Now we look for larger-or-equal-sized free blocks in the same master (routed)
587      # (super)block. If there aren't any, we can't combine blocks anyway.  If there
588      # are, we check to see if we can combine blocks.
589      # Execute the statement prepared in the if-else above.
590
591      $sth->execute;
592
593# NetAddr::IP->compact() attempts to produce the smallest inclusive block
594# from the caller and the passed terms.
595# EG:  if you call $cidr->compact($ip1,$ip2,$ip3) when $cidr, $ip1, $ip2,
596#       and $ip3 are consecutive /27's starting on .0 (.0-.31, .32-.63,
597#       .64-.95, and .96-.128), you will get an array containing a single
598#       /25 as element 0 (.0-.127).  Order is not important;  you could have
599#       $cidr=.32/27, $ip1=.96/27, $ip2=.0/27, and $ip3=.64/27.
600
601      my (@together, @combinelist);
602      my $i=0;
603      while (my @data = $sth->fetchrow_array) {
604        my $testIP = new NetAddr::IP $data[0];
605        @together = $testIP->compact($cidr);
606        my $num = @together;
607        if ($num == 1) {
608          $cidr = $together[0];
609          $combinelist[$i++] = $testIP;
610        }
611      }
612
613      # Clear old freeblocks entries - if any.  They should all be within
614      # the $cidr determined above.
615      $sth = $dbh->prepare("delete from freeblocks where cidr <<='$cidr'");
616      $sth->execute;
617
618      # insert "new" freeblocks entry
619      if ($type eq 'rm') {
620        $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city)".
621                " values ('$cidr',".$cidr->masklen.",'<NULL>')");
622      } else {
623        $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
624                " values ('$cidr',".$cidr->masklen.
625                ",(select city from routed where cidr >>= '$cidr'),'".
626                (($type =~ /^(.)r$/) ? "$1" : 'y')."')");
627      }
628      $sth->execute;
629
630      # If we got here, we've succeeded.  Whew!
631      $dbh->commit;
632    }; # end eval
633    if ($@) {
634      eval { $dbh->rollback; };
635      return ('FAIL', $msg);
636    } else {
637      return ('OK',"OK");
638    }
639
640  } # end alloctype != netblock
641
642} # end deleteBlock()
643
644
645## IPDB::mailNotify()
646# Sends notification mail to recipients regarding an IPDB operation
647sub mailNotify ($$$) {
648  my ($recip,$subj,$message) = @_;
649  my $mailer = Net::SMTP->new("smtp.example.com", Hello => "ipdb.example.com");
650
651  $mailer->mail('ipdb@example.com');
652  $mailer->to($recip);
653  $mailer->data("From: \"IP Database\" <ipdb\@example.com>\n",
654        "To: $recip\n",
655        "Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n",
656        "Subject: {IPDB} $subj\n",
657        "X-Mailer: IPDB Notify v".sprintf("%.1d",$IPDB::VERSION)."\n",
658        "Organization: Example Corp\n",
659        "\n$message\n");
660  $mailer->quit;
661}
662
663
664## IPDB::subst_rDNS()
665# Substitute tokens in a template string for rDNS entries
666sub subst_rDNS {
667  my ($template,$ip) = $@;
668
669  my ($o1,$o2,$o3,$o4) = ($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)/);
670  $template =~ s/\%o1\%/$o1/;
671  $template =~ s/\%o2\%/$o2/;
672  $template =~ s/\%o3\%/$o3/;
673  $template =~ s/\%o4\%/$o4/;
674  $template =~ s/\%d\%/$o1$-o2-$o3-$o4/;
675
676  return $template;
677} # end subst_rDNS()
678
679# Indicates module loaded OK.  Required by Perl.
6801;
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