source: trunk/cgi-bin/IPDB.pm @ 404

Last change on this file since 404 was 404, checked in by Kris Deugau, 12 years ago

/trunk

Merge "temporary" fix-up-the-IP-pool deallocation hack. See #13.

This will be regularized and integrated down the road since it's
likely that legacy data may show the same constructs, and there
are probably advantages to *creating* similar allocations new.

See #6.

  • Property svn:keywords set to Date Rev Author
File size: 27.0 KB
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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: 2010-05-11 22:05:54 +0000 (Tue, 11 May 2010) $
6# SVN revision $Rev: 404 $
7# Last update by $Author: kdeugau $
8###
9# Copyright (C) 2004-2006 - Kris Deugau
10
11package IPDB;
12
13use strict;
14use warnings;
15use Exporter;
16use DBI;
17use Net::SMTP;
18use NetAddr::IP qw( Compact );
19use POSIX;
20use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
21
22$VERSION        = 2.0;
23@ISA            = qw(Exporter);
24@EXPORT_OK    = qw(
25        %disp_alloctypes %list_alloctypes %def_custids @citylist @poplist @masterblocks
26        %allocated %free %routed %bigfree %IPDBacl
27        &initIPDBGlobals &connectDB &finish &checkDBSanity &allocateBlock &addMaster
28        &deleteBlock &getBlockData &mailNotify
29        );
30
31@EXPORT         = (); # Export nothing by default.
32%EXPORT_TAGS    = ( ALL => [qw(
33                %disp_alloctypes %list_alloctypes %def_custids @citylist @poplist
34                @masterblocks %allocated %free %routed %bigfree %IPDBacl
35                &initIPDBGlobals &connectDB &finish &checkDBSanity &allocateBlock
36                &addMaster &deleteBlock &getBlockData &mailNotify
37                )]
38        );
39
40##
41## Global variables
42##
43our %disp_alloctypes;
44our %list_alloctypes;
45our %def_custids;
46our @citylist;
47our @poplist;
48our @masterblocks;
49our %allocated;
50our %free;
51our %routed;
52our %bigfree;
53our %IPDBacl;
54
55# Let's initialize the globals.
56## IPDB::initIPDBGlobals()
57# Initialize all globals.  Takes a database handle, returns a success or error code
58sub initIPDBGlobals {
59  my $dbh = $_[0];
60  my $sth;
61
62  # Initialize alloctypes hashes
63  $sth = $dbh->prepare("select type,listname,dispname,listorder,def_custid from alloctypes order by listorder");
64  $sth->execute;
65  while (my @data = $sth->fetchrow_array) {
66    $disp_alloctypes{$data[0]} = $data[2];
67    $def_custids{$data[0]} = $data[4];
68    if ($data[3] < 900) {
69      $list_alloctypes{$data[0]} = $data[1];
70    }
71  }
72
73  # City and POP listings
74  $sth = $dbh->prepare("select city,routing from cities order by city");
75  $sth->execute;
76  return (undef,$sth->errstr) if $sth->err;
77  while (my @data = $sth->fetchrow_array) {
78    push @citylist, $data[0];
79    if ($data[1] eq 'y') {
80      push @poplist, $data[0];
81    }
82  }
83
84  # Master block list
85  $sth = $dbh->prepare("select cidr from masterblocks order by cidr");
86  $sth->execute;
87  return (undef,$sth->errstr) if $sth->err;
88  for (my $i=0; my @data = $sth->fetchrow_array(); $i++) {
89    $masterblocks[$i] = new NetAddr::IP $data[0];
90    $allocated{"$masterblocks[$i]"} = 0;
91    $free{"$masterblocks[$i]"} = 0;
92    $bigfree{"$masterblocks[$i]"} = 128; # Larger number means smaller block.
93                                        # Set to 128 to prepare for IPv6
94    $routed{"$masterblocks[$i]"} = 0;
95  }
96
97  # Load ACL data.  Specific username checks are done at a different level.
98  $sth = $dbh->prepare("select username,acl from users");
99  $sth->execute;
100  return (undef,$sth->errstr) if $sth->err;
101  while (my @data = $sth->fetchrow_array) {
102    $IPDBacl{$data[0]} = $data[1];
103  }
104
105  return (1,"OK");
106} # end initIPDBGlobals
107
108
109## IPDB::connectDB()
110# Creates connection to IPDB.
111# Requires the database name, username, and password.
112# Returns a handle to the db.
113# Set up for a PostgreSQL db;  could be any transactional DBMS with the
114# right changes.
115# This definition should be sub connectDB($$$) to be technically correct,
116# but this breaks.  GRR.
117sub connectDB {
118  my ($dbname,$user,$pass) = @_;
119  my $dbh;
120  my $DSN = "DBI:Pg:host=ipdb-db;dbname=$dbname";
121#  my $user = 'ipdb';
122#  my $pw   = 'ipdbpwd';
123
124# Note that we want to autocommit by default, and we will turn it off locally as necessary.
125# We may not want to print gobbledygook errors;  YMMV.  Have to ponder that further.
126  $dbh = DBI->connect($DSN, $user, $pass, {
127        AutoCommit => 1,
128        PrintError => 0
129        })
130    or return (undef, $DBI::errstr) if(!$dbh);
131
132# Return here if we can't select.  Note that this indicates a
133# problem executing the select.
134  my $sth = $dbh->prepare("select type from alloctypes");
135  $sth->execute();
136  return (undef,$DBI::errstr) if ($sth->err);
137
138# See if the select returned anything (or null data).  This should
139# succeed if the select executed, but...
140  $sth->fetchrow();
141  return (undef,$DBI::errstr)  if ($sth->err);
142
143# If we get here, we should be OK.
144  return ($dbh,"DB connection OK");
145} # end connectDB
146
147
148## IPDB::finish()
149# Cleans up after database handles and so on.
150# Requires a database handle
151sub finish {
152  my $dbh = $_[0];
153  $dbh->disconnect;
154} # end finish
155
156
157## IPDB::checkDBSanity()
158# Quick check to see if the db is responding.  A full integrity
159# check will have to be a separate tool to walk the IP allocation trees.
160sub checkDBSanity {
161  my ($dbh) = $_[0];
162
163  if (!$dbh) {
164    print "No database handle, or connection has been closed.";
165    return -1;
166  } else {
167    # it connects, try a stmt.
168    my $sth = $dbh->prepare("select type from alloctypes");
169    my $err = $sth->execute();
170
171    if ($sth->fetchrow()) {
172      # all is well.
173      return 1;
174    } else {
175      print "Connected to the database, but could not execute test statement.  ".$sth->errstr();
176      return -1;
177    }
178  }
179  # Clean up after ourselves.
180#  $dbh->disconnect;
181} # end checkDBSanity
182
183
184## IPDB::addMaster()
185# Does all the magic necessary to sucessfully add a master block
186# Requires database handle, block to add
187# Returns failure code and error message or success code and "message"
188sub addMaster {
189  my $dbh = shift;
190  my $cidr = new NetAddr::IP shift;
191
192  # Allow transactions, and raise an exception on errors so we can catch it later.
193  # Use local to make sure these get "reset" properly on exiting this block
194  local $dbh->{AutoCommit} = 0;
195  local $dbh->{RaiseError} = 1;
196
197  # Wrap all the SQL in a transaction
198  eval {
199    my $sth = $dbh->prepare("select count(*) from masterblocks where cidr <<= '$cidr'");
200    $sth->execute;
201    my @data = $sth->fetchrow_array;
202
203    if ($data[0] eq 0) {
204      # First case - master is brand-spanking-new.
205##fixme: rwhois should be globally-flagable somewhere, much like a number of other things
206## maybe a db table called "config"?
207      $sth = $dbh->prepare("insert into masterblocks (cidr,rwhois) values ('$cidr','y')");
208      $sth->execute;
209
210# Unrouted blocks aren't associated with a city (yet).  We don't rely on this
211# elsewhere though;  legacy data may have traps and pitfalls in it to break this.
212# Thus the "routed" flag.
213
214      $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
215        " values ('$cidr',".$cidr->masklen.",'<NULL>','n')");
216      $sth->execute;
217
218      # If we get here, everything is happy.  Commit changes.
219      $dbh->commit;
220
221    } # new master does not contain existing master(s)
222    else {
223
224      # collect the master(s) we're going to absorb, and snag the longest netmask while we're at it.
225      my $smallmask = $cidr->masklen;
226      $sth = $dbh->prepare("select cidr as mask from masterblocks where cidr <<= '$cidr'");
227      $sth->execute;
228      my @cmasters;
229      while (my @data = $sth->fetchrow_array) {
230        my $master = new NetAddr::IP $data[0];
231        push @cmasters, $master;
232        $smallmask = $master->masklen if $master->masklen > $smallmask;
233      }
234
235      # split the new master, and keep only those blocks not part of an existing master
236      my @blocklist;
237      foreach my $seg ($cidr->split($smallmask)) {
238        my $contained = 0;
239        foreach my $master (@cmasters) {
240          $contained = 1 if $master->contains($seg);
241        }
242        push @blocklist, $seg if !$contained;
243      }
244
245      # collect the unrouted free blocks within the new master
246      $sth = $dbh->prepare("select cidr from freeblocks where ".
247                "maskbits>=$smallmask and cidr <<= '$cidr' and routed='n'");
248      $sth->execute;
249      while (my @data = $sth->fetchrow_array) {
250        my $freeblock = new NetAddr::IP $data[0];
251        push @blocklist, $freeblock;
252      }
253
254      # combine the set of free blocks we should have now.
255      @blocklist = Compact(@blocklist);
256
257      # and now insert the new data.  Make sure to delete old masters too.
258
259      # freeblocks
260      $sth = $dbh->prepare("delete from freeblocks where cidr <<= ?");
261      my $sth2 = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed) values (?,?,'<NULL>','n')");
262      foreach my $newblock (@blocklist) {
263        $sth->execute("$newblock");
264        $sth2->execute("$newblock", $newblock->masklen);
265      }
266
267      # master
268      $sth = $dbh->prepare("delete from masterblocks where cidr <<= '$cidr'");
269      $sth->execute;
270      $sth = $dbh->prepare("insert into masterblocks (cidr,rwhois) values ('$cidr','y')");
271      $sth->execute;
272
273      # *whew*  If we got here, we likely suceeded.
274      $dbh->commit;
275    } # new master contained existing master(s)
276  }; # end eval
277
278  if ($@) {
279    my $msg = $@;
280    eval { $dbh->rollback; };
281    return ('FAIL',$msg);
282  } else {
283    return ('OK','OK');
284  }
285} # end addMaster
286
287
288## IPDB::allocateBlock()
289# Does all of the magic of actually allocating a netblock
290# Requires database handle, block to allocate, custid, type, city,
291#       description, notes, circuit ID, block to allocate from, private data
292# Returns a success code and optional error message.
293sub allocateBlock {
294  my ($dbh,undef,undef,$custid,$type,$city,$desc,$notes,$circid,$privdata,$nodeid) = @_;
295
296  my $cidr = new NetAddr::IP $_[1];
297  my $alloc_from = new NetAddr::IP $_[2];
298  my $sth;
299
300  # Snag the "type" of the freeblock (alloc_from) "just in case"
301  $sth = $dbh->prepare("select routed from freeblocks where cidr='$alloc_from'");
302  $sth->execute;
303  my ($alloc_from_type) = $sth->fetchrow_array;
304
305  # To contain the error message, if any.
306  my $msg = "Unknown error allocating $cidr as '$type'";
307
308  # Enable transactions and error handling
309  local $dbh->{AutoCommit} = 0; # These need to be local so we don't
310  local $dbh->{RaiseError} = 1; # step on our toes by accident.
311
312  if ($type =~ /^.i$/) {
313    $msg = "Unable to assign static IP $cidr to $custid";
314    eval {
315      # We have to do this in two parts because otherwise we lose
316      # the ability to return the IP assigned.  Should that change,
317      # the commented SQL statement below may become usable.
318# update poolips set custid='$custid',city='$city',available='n',
319#       description='$desc',notes='$notes',circuitid='$circid'
320#       where ip=(select ip from poolips where pool='$alloc_from'
321#       and available='y' order by ip limit 1);
322
323      $sth = $dbh->prepare("select ip from poolips where pool='$alloc_from'".
324        " and available='y' order by ip");
325      $sth->execute;
326
327      my @data = $sth->fetchrow_array;
328      $cidr = $data[0];  # $cidr is already declared when we get here!
329
330      $sth = $dbh->prepare("update poolips set custid='$custid',".
331        "city='$city',available='n',description='$desc',notes='$notes',".
332        "circuitid='$circid',privdata='$privdata'".
333        " where ip='$cidr'");
334      $sth->execute;
335# node hack
336      if ($nodeid && $nodeid ne '') {
337        $sth = $dbh->prepare("INSERT INTO noderef (block,node_id) VALUES (?,?)");
338        $sth->execute("$cidr",$nodeid);
339      }
340# end node hack
341      $dbh->commit;
342    };
343    if ($@) {
344      $msg .= ": '".$sth->errstr."'";
345      eval { $dbh->rollback; };
346      return ('FAIL',$msg);
347    } else {
348      return ('OK',"$cidr");
349    }
350
351  } else { # end IP-from-pool allocation
352
353    if ($cidr == $alloc_from) {
354      # Easiest case- insert in one table, delete in the other, and go home.  More or less.
355      # insert into allocations values (cidr,custid,type,city,desc) and
356      # delete from freeblocks where cidr='cidr'
357      # For data safety on non-transaction DBs, we delete first.
358
359      eval {
360        $msg = "Unable to allocate $cidr as '$disp_alloctypes{$type}'";
361        if ($type eq 'rm') {
362          $sth = $dbh->prepare("update freeblocks set routed='y',city='$city'".
363            " where cidr='$cidr'");
364          $sth->execute;
365          $sth = $dbh->prepare("insert into routed (cidr,maskbits,city)".
366                " values ('$cidr',".$cidr->masklen.",'$city')");
367          $sth->execute;
368        } else {
369          # common stuff for end-use, dialup, dynDSL, pools, etc, etc.
370
371          # special case - block is a container/"reserve" block
372          if ($type =~ /^(.)c$/) {
373            $sth = $dbh->prepare("update freeblocks set routed='$1' where cidr='$cidr'");
374            $sth->execute;
375          } else {
376            # "normal" case
377            $sth = $dbh->prepare("delete from freeblocks where cidr='$cidr'");
378            $sth->execute;
379          }
380          $sth = $dbh->prepare("insert into allocations".
381                " (cidr,custid,type,city,description,notes,maskbits,circuitid,privdata)".
382                " values ('$cidr','$custid','$type','$city','$desc','$notes',".
383                $cidr->masklen.",'$circid','$privdata')");
384          $sth->execute;
385
386          # And initialize the pool, if necessary
387          # PPPoE pools (currently dialup, DSL, and WiFi) get all IPs made available
388          # "DHCP" or "real-subnet" pools have the net, gw, and bcast IPs removed.
389          if ($type =~ /^.p$/) {
390            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
391            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"all");
392            die $rmsg if $code eq 'FAIL';
393          } elsif ($type =~ /^.d$/) {
394            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
395            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"normal");
396            die $rmsg if $code eq 'FAIL';
397          }
398
399        } # routing vs non-routing netblock
400
401# node hack
402      if ($nodeid && $nodeid ne '') {
403        $sth = $dbh->prepare("INSERT INTO noderef (block,node_id) VALUES (?,?)");
404        $sth->execute("$cidr",$nodeid);
405      }
406# end node hack
407        $dbh->commit;
408      }; # end of eval
409      if ($@) {
410        $msg .= ": ".$@;
411        eval { $dbh->rollback; };
412        return ('FAIL',$msg);
413      } else {
414        return ('OK',"OK");
415      }
416
417    } else { # cidr != alloc_from
418
419      # Hard case.  Allocation is smaller than free block.
420      my $wantmaskbits = $cidr->masklen;
421      my $maskbits = $alloc_from->masklen;
422
423      my @newfreeblocks;        # Holds free blocks generated from splitting the source freeblock.
424
425      # This determines which blocks will be left "free" after allocation.  We take the
426      # block we're allocating from, and split it in half.  We see which half the wanted
427      # block is in, and repeat until the wanted block is equal to one of the halves.
428      my $i=0;
429      my $tmp_from = $alloc_from;       # So we don't munge $alloc_from
430      while ($maskbits++ < $wantmaskbits) {
431        my @subblocks = $tmp_from->split($maskbits);
432        $newfreeblocks[$i++] = (($cidr->within($subblocks[0])) ? $subblocks[1] : $subblocks[0]);
433        $tmp_from = ( ($cidr->within($subblocks[0])) ? $subblocks[0] : $subblocks[1] );
434      } # while
435
436      # Begin SQL transaction block
437      eval {
438        $msg = "Unable to allocate $cidr as '$disp_alloctypes{$type}'";
439
440        # Delete old freeblocks entry
441        $sth = $dbh->prepare("delete from freeblocks where cidr='$alloc_from'");
442        $sth->execute();
443
444        # now we have to do some magic for routing blocks
445        if ($type eq 'rm') {
446
447          # Insert the new freeblocks entries
448          # Note that non-routed blocks are assigned to <NULL>
449          # and use the default value for the routed column ('n')
450          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city)".
451                " values (?, ?, '<NULL>')");
452          foreach my $block (@newfreeblocks) {
453            $sth->execute("$block", $block->masklen);
454          }
455
456          # Insert the entry in the routed table
457          $sth = $dbh->prepare("insert into routed (cidr,maskbits,city)".
458                " values ('$cidr',".$cidr->masklen.",'$city')");
459          $sth->execute;
460          # Insert the (almost) same entry in the freeblocks table
461          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
462                " values ('$cidr',".$cidr->masklen.",'$city','y')");
463          $sth->execute;
464
465        } else { # done with alloctype == rm
466
467          # Insert the new freeblocks entries
468          # Along with some more HairyPerl(TM):
469          #   if $alloc_type_from is p
470          #   OR
471          #   $type matches /^(.)r$/
472          # inserted value for routed column should match.
473          # This solves the case of inserting an arbitrary block into a
474          # "Reserve-for-routed-DSL" block.  Which you really shouldn't
475          # do in the first place, but anyway...
476          $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
477                " values (?, ?, (select city from routed where cidr >>= '$cidr'),'".
478                ( ( ($alloc_from_type =~ /^(p)$/) || ($type =~ /^(.)r$/) ) ? "$1" : 'y')."')");
479          foreach my $block (@newfreeblocks) {
480            $sth->execute("$block", $block->masklen);
481          }
482          # Special-case for reserve/"container" blocks - generate
483          # the "extra" freeblocks entry for the container
484          if ($type =~ /^(.)c$/) {
485            $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
486                " values ('$cidr',".$cidr->masklen.",'$city','$1')");
487            $sth->execute;
488          }
489          # Insert the allocations entry
490          $sth = $dbh->prepare("insert into allocations (cidr,custid,type,city,".
491                "description,notes,maskbits,circuitid,privdata)".
492                " values ('$cidr','$custid','$type','$city','$desc','$notes',".
493                $cidr->masklen.",'$circid','$privdata')");
494          $sth->execute;
495
496          # And initialize the pool, if necessary
497          # PPPoE pools (currently dialup, DSL, and WiFi) get all IPs made available
498          # "DHCP" or "real-subnet" pools have the net, gw, and bcast IPs removed.
499          if ($type =~ /^.p$/) {
500            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
501            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"all");
502            die $rmsg if $code eq 'FAIL';
503          } elsif ($type =~ /^.d$/) {
504            $msg = "Could not initialize IPs in new $disp_alloctypes{$type} $cidr";
505            my ($code,$rmsg) = initPool($dbh,$cidr,$type,$city,"normal");
506            die $rmsg if $code eq 'FAIL';
507          }
508
509        } # done with netblock alloctype != rm
510
511# node hack
512      if ($nodeid && $nodeid ne '') {
513        $sth = $dbh->prepare("INSERT INTO noderef (block,node_id) VALUES (?,?)");
514        $sth->execute("$cidr",$nodeid);
515      }
516# end node hack
517        $dbh->commit;
518      }; # end eval
519      if ($@) {
520        $msg .= ": ".$@;
521        eval { $dbh->rollback; };
522        return ('FAIL',$msg);
523      } else {
524        return ('OK',"OK");
525      }
526
527    } # end fullcidr != alloc_from
528
529  } # end static-IP vs netblock allocation
530
531} # end allocateBlock()
532
533
534## IPDB::initPool()
535# Initializes a pool
536# Requires a database handle, the pool CIDR, type, city, and a parameter
537# indicating whether the pool should allow allocation of literally every
538# IP, or if it should reserve network/gateway/broadcast IPs
539# Note that this is NOT done in a transaction, that's why it's a private
540# function and should ONLY EVER get called from allocateBlock()
541sub initPool {
542  my ($dbh,undef,$type,$city,$class) = @_;
543  my $pool = new NetAddr::IP $_[1];
544
545##fixme Need to just replace 2nd char of type with i rather than capturing 1st char of type
546  $type =~ s/[pd]$/i/;
547  my $sth;
548  my $msg;
549
550  # Trap errors so we can pass them back to the caller.  Even if the
551  # caller is only ever supposed to be local, and therefore already
552  # trapping errors.  >:(
553  local $dbh->{AutoCommit} = 0; # These need to be local so we don't
554  local $dbh->{RaiseError} = 1; # step on our toes by accident.
555
556  eval {
557    # have to insert all pool IPs into poolips table as "unallocated".
558    $sth = $dbh->prepare("insert into poolips (pool,ip,custid,city,type)".
559        " values ('$pool', ?, '6750400', '$city', '$type')");
560    my @poolip_list = $pool->hostenum;
561    if ($class eq 'all') { # (DSL-ish block - *all* IPs available
562      if ($pool->addr !~ /\.0$/) {      # .0 causes weirdness.
563        $sth->execute($pool->addr);
564      }
565      for (my $i=0; $i<=$#poolip_list; $i++) {
566        $sth->execute($poolip_list[$i]->addr);
567      }
568      $pool--;
569      if ($pool->addr !~ /\.255$/) {    # .255 can cause weirdness.
570        $sth->execute($pool->addr);
571      }
572    } else { # (real netblock)
573      for (my $i=1; $i<=$#poolip_list; $i++) {
574        $sth->execute($poolip_list[$i]->addr);
575      }
576    }
577  };
578  if ($@) {
579    $msg = "'".$sth->errstr."'";
580    eval { $dbh->rollback; };
581    return ('FAIL',$msg);
582  } else {
583    return ('OK',"OK");
584  }
585} # end initPool()
586
587
588## IPDB::deleteBlock()
589# Removes an allocation from the database, including deleting IPs
590# from poolips and recombining entries in freeblocks if possible
591# Also handles "deleting" a static IP allocation, and removal of a master
592# Requires a database handle, the block to delete, and the type of block
593sub deleteBlock {
594  my ($dbh,undef,$type) = @_;
595  my $cidr = new NetAddr::IP $_[1];
596
597  my $sth;
598
599  # Magic variables used for odd allocation cases.
600  my $container;
601  my $con_type;
602
603  # To contain the error message, if any.
604  my $msg = "Unknown error deallocating $type $cidr";
605  # Enable transactions and exception-on-errors... but only for this sub
606  local $dbh->{AutoCommit} = 0;
607  local $dbh->{RaiseError} = 1;
608
609  # First case.  The "block" is a static IP
610  # Note that we still need some additional code in the odd case
611  # of a netblock-aligned contiguous group of static IPs
612  if ($type =~ /^.i$/) {
613
614    eval {
615      $msg = "Unable to deallocate $disp_alloctypes{$type} $cidr";
616      $sth = $dbh->prepare("update poolips set custid='6750400',available='y',".
617        "city=(select city from allocations where cidr >>= '$cidr'".
618        " order by masklen(cidr) desc limit 1),".
619        "description='',notes='',circuitid='' where ip='$cidr'");
620      $sth->execute;
621      $dbh->commit;
622    };
623    if ($@) {
624      eval { $dbh->rollback; };
625      return ('FAIL',$msg);
626    } else {
627      return ('OK',"OK");
628    }
629
630  } elsif ($type eq 'mm') { # end alloctype =~ /.i/
631
632    $msg = "Unable to delete master block $cidr";
633    eval {
634      $sth = $dbh->prepare("delete from masterblocks where cidr='$cidr'");
635      $sth->execute;
636      $sth = $dbh->prepare("delete from freeblocks where cidr <<= '$cidr'");
637      $sth->execute;
638      $dbh->commit;
639    };
640    if ($@) {
641      eval { $dbh->rollback; };
642      return ('FAIL', $msg);
643    } else {
644      return ('OK',"OK");
645    }
646
647  } else { # end alloctype master block case
648
649    ## This is a big block; but it HAS to be done in a chunk.  Any removal
650    ## of a netblock allocation may result in a larger chunk of free
651    ## contiguous IP space - which may in turn be combined into a single
652    ## netblock rather than a number of smaller netblocks.
653
654    eval {
655
656      if ($type eq 'rm') {
657        $msg = "Unable to remove routing allocation $cidr";
658        $sth = $dbh->prepare("delete from routed where cidr='$cidr'");
659        $sth->execute;
660        # Make sure block getting deleted is properly accounted for.
661        $sth = $dbh->prepare("update freeblocks set routed='n',city='<NULL>'".
662                " where cidr='$cidr'");
663        $sth->execute;
664        # Set up query to start compacting free blocks.
665        $sth = $dbh->prepare("select cidr from freeblocks where ".
666                "maskbits<=".$cidr->masklen." and routed='n' order by maskbits desc");
667
668      } else { # end alloctype routing case
669
670        # Magic.  We need to get information about the containing block (if any)
671        # so as to make sure that the freeblocks we insert get the correct "type".
672        $sth = $dbh->prepare("select cidr,type from allocations where cidr >> '$cidr'");
673        $sth->execute;
674        ($container, $con_type) = $sth->fetchrow_array;
675
676        # Delete all allocations within the block being deleted.  This is
677        # deliberate and correct, and removes the need to special-case
678        # removal of "container" blocks.
679        $sth = $dbh->prepare("delete from allocations where cidr <<='$cidr'");
680        $sth->execute;
681
682        # Special case - delete pool IPs
683        if ($type =~ /^.[pd]$/) {
684          # We have to delete the IPs from the pool listing.
685          $sth = $dbh->prepare("delete from poolips where pool='$cidr'");
686          $sth->execute;
687        }
688
689        # Set up query for compacting free blocks.
690        if ($con_type && $con_type eq 'pc') {
691          # Clean up after "bad" allocations (blocks that are not formally
692          # contained which have nevertheless been allocated from a container block)
693          # We want to make certain that the freeblocks are properly "labelled"
694          $sth = $dbh->prepare("select cidr from freeblocks where cidr <<= '$container' order by maskbits desc");
695        } else {
696          # Standard deallocation.
697          $sth = $dbh->prepare("select cidr from freeblocks where cidr <<= ".
698                "(select cidr from routed where cidr >>= '$cidr') ".
699                " and maskbits<=".$cidr->masklen.
700                " and routed='".(($type =~ /^(.)r$/) ? "$1" : 'y').
701                "' order by maskbits desc");
702        }
703
704      } # end alloctype general case
705
706##TEMP
707## Temporary wrapper to "properly" deallocate sIP PPPoE/DSL "netblocks" in 209.91.185.0/24
708## Note that we should really general-case this.
709my $staticpool = new NetAddr::IP "209.91.185.0/24";
710##TEMP
711if ($cidr->within($staticpool)) {
712##TEMP
713  # We've already deleted the block, now we have to stuff its IPs into the pool.
714  my $sth2 = $dbh->prepare("insert into poolips values ('209.91.185.0/24',?,'6750400','Sudbury','di','y','','','')");
715  $sth2->execute($cidr->addr);
716  foreach my $ip ($cidr->hostenum) {
717    $sth2->execute("$ip");
718  }
719  $cidr--;
720  $sth2->execute($cidr->addr);
721
722##TEMP
723} else {
724##TEMP
725
726      # Now we look for larger-or-equal-sized free blocks in the same master (routed)
727      # (super)block. If there aren't any, we can't combine blocks anyway.  If there
728      # are, we check to see if we can combine blocks.
729      # Execute the statement prepared in the if-else above.
730
731      $sth->execute;
732
733# NetAddr::IP->compact() attempts to produce the smallest inclusive block
734# from the caller and the passed terms.
735# EG:  if you call $cidr->compact($ip1,$ip2,$ip3) when $cidr, $ip1, $ip2,
736#       and $ip3 are consecutive /27's starting on .0 (.0-.31, .32-.63,
737#       .64-.95, and .96-.128), you will get an array containing a single
738#       /25 as element 0 (.0-.127).  Order is not important;  you could have
739#       $cidr=.32/27, $ip1=.96/27, $ip2=.0/27, and $ip3=.64/27.
740
741      my (@together, @combinelist);
742      my $i=0;
743      while (my @data = $sth->fetchrow_array) {
744        my $testIP = new NetAddr::IP $data[0];
745        @together = $testIP->compact($cidr);
746        my $num = @together;
747        if ($num == 1) {
748          $cidr = $together[0];
749          $combinelist[$i++] = $testIP;
750        }
751      }
752
753      # Clear old freeblocks entries - if any.  They should all be within
754      # the $cidr determined above.
755      $sth = $dbh->prepare("delete from freeblocks where cidr <<='$cidr'");
756      $sth->execute;
757
758      # insert "new" freeblocks entry
759      if ($type eq 'rm') {
760        $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city)".
761                " values ('$cidr',".$cidr->masklen.",'<NULL>')");
762      } else {
763        # Magic hackery to insert "correct" data for deallocation of
764        # non-contained blocks allocated from within a container.
765        $type = 'pr' if $con_type && $con_type eq 'pc';
766
767        $sth = $dbh->prepare("insert into freeblocks (cidr,maskbits,city,routed)".
768                " values ('$cidr',".$cidr->masklen.
769                ",(select city from routed where cidr >>= '$cidr'),'".
770                (($type =~ /^(.)r$/) ? "$1" : 'y')."')");
771      }
772      $sth->execute;
773
774##TEMP
775}
776##TEMP
777
778      # If we got here, we've succeeded.  Whew!
779      $dbh->commit;
780    }; # end eval
781    if ($@) {
782      eval { $dbh->rollback; };
783      return ('FAIL', $msg);
784    } else {
785      return ('OK',"OK");
786    }
787
788  } # end alloctype != netblock
789
790} # end deleteBlock()
791
792
793## IPDB::getBlockData()
794# Return custid, type, city, and description for a block
795sub getBlockData {
796  my $dbh = shift;
797  my $block = shift;
798
799  my $sth = $dbh->prepare("select cidr,custid,type,city,description from searchme".
800        " where cidr='$block'");
801  $sth->execute();
802  return $sth->fetchrow_array();
803} # end getBlockData()
804
805
806## IPDB::mailNotify()
807# Sends notification mail to recipients regarding an IPDB operation
808sub mailNotify ($$$) {
809  my ($recip,$subj,$message) = @_;
810  my $mailer = Net::SMTP->new("smtp.example.com", Hello => "ipdb.example.com");
811
812  $mailer->mail('ipdb@example.com');
813  $mailer->to($recip);
814  $mailer->data("From: \"IP Database\" <ipdb\@example.com>\n",
815        "To: $recip\n",
816        "Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n",
817        "Subject: {IPDB} $subj\n",
818        "X-Mailer: IPDB Notify v".sprintf("%.1d",$IPDB::VERSION)."\n",
819        "Organization: Example Corp\n",
820        "\n$message\n");
821  $mailer->quit;
822}
823
824# Indicates module loaded OK.  Required by Perl.
8251;
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