1 package GOSA::GosaSupportDaemon;
3 use Exporter;
4 @ISA = qw(Exporter);
5 my @functions = (
6 "create_xml_hash",
7 "get_content_from_xml_hash",
8 "add_content2xml_hash",
9 "create_xml_string",
10 "transform_msg2hash",
11 "get_time",
12 "build_msg",
13 "get_where_statement",
14 "get_select_statement",
15 "get_update_statement",
16 "get_limit_statement",
17 "get_orderby_statement",
18 "get_dns_domains",
19 );
20 @EXPORT = @functions;
21 use strict;
22 use warnings;
23 use IO::Socket::INET;
24 use Crypt::Rijndael;
25 use Digest::MD5 qw(md5 md5_hex md5_base64);
26 use MIME::Base64;
27 use XML::Simple;
29 my $op_hash = {
30 'eq' => '=',
31 'ne' => '!=',
32 'ge' => '>=',
33 'gt' => '>',
34 'le' => '<=',
35 'lt' => '<',
36 };
39 BEGIN {}
41 END {}
43 ### Start ######################################################################
45 my $xml = new XML::Simple();
47 sub daemon_log {
48 my ($msg, $level) = @_ ;
49 &main::daemon_log($msg, $level);
50 return;
51 }
56 #=== FUNCTION ================================================================
57 # NAME: create_xml_hash
58 # PARAMETERS: header - string - message header (required)
59 # source - string - where the message come from (required)
60 # target - string - where the message should go to (required)
61 # [header_value] - string - something usefull (optional)
62 # RETURNS: hash - hash - nomen est omen
63 # DESCRIPTION: creates a key-value hash, all values are stored in a array
64 #===============================================================================
65 sub create_xml_hash {
66 my ($header, $source, $target, $header_value) = @_;
67 my $hash = {
68 header => [$header],
69 source => [$source],
70 target => [$target],
71 $header => [$header_value],
72 };
73 return $hash
74 }
77 #=== FUNCTION ================================================================
78 # NAME: create_xml_string
79 # PARAMETERS: xml_hash - hash - hash from function create_xml_hash
80 # RETURNS: xml_string - string - xml string representation of the hash
81 # DESCRIPTION: transform the hash to a string using XML::Simple module
82 #===============================================================================
83 sub create_xml_string {
84 my ($xml_hash) = @_ ;
85 my $xml_string = $xml->XMLout($xml_hash, RootName => 'xml');
86 #$xml_string =~ s/[\n]+//g;
87 #daemon_log("create_xml_string:",7);
88 #daemon_log("$xml_string\n", 7);
89 return $xml_string;
90 }
93 sub transform_msg2hash {
94 my ($msg) = @_ ;
95 my $hash = $xml->XMLin($msg, ForceArray=>1);
97 # xml tags without a content are created as an empty hash
98 # substitute it with an empty list
99 eval {
100 while( my ($xml_tag, $xml_content) = each %{ $hash } ) {
101 if( 1 == @{ $xml_content } ) {
102 # there is only one element in xml_content list ...
103 my $element = @{ $xml_content }[0];
104 if( ref($element) eq "HASH" ) {
105 # and this element is an hash ...
106 my $len_element = keys %{ $element };
107 if( $len_element == 0 ) {
108 # and this hash is empty, then substitute the xml_content
109 # with an empty string in list
110 $hash->{$xml_tag} = [ "none" ];
111 }
112 }
113 }
114 }
115 };
116 if( $@ ) {
117 $hash = undef;
118 }
120 return $hash;
121 }
124 #=== FUNCTION ================================================================
125 # NAME: add_content2xml_hash
126 # PARAMETERS: xml_ref - ref - reference to a hash from function create_xml_hash
127 # element - string - key for the hash
128 # content - string - value for the hash
129 # RETURNS: nothing
130 # DESCRIPTION: add key-value pair to xml_ref, if key alread exists,
131 # then append value to list
132 #===============================================================================
133 sub add_content2xml_hash {
134 my ($xml_ref, $element, $content) = @_;
135 if(not exists $$xml_ref{$element} ) {
136 $$xml_ref{$element} = [];
137 }
138 my $tmp = $$xml_ref{$element};
139 push(@$tmp, $content);
140 return;
141 }
144 #=== FUNCTION ================================================================
145 # NAME: encrypt_msg
146 # PARAMETERS: msg - string - message to encrypt
147 # my_cipher - ref - reference to a Crypt::Rijndael object
148 # RETURNS: crypted_msg - string - crypted message
149 # DESCRIPTION: crypts the incoming message with the Crypt::Rijndael module
150 #===============================================================================
151 #sub encrypt_msg {
152 # my ($msg, $key) = @_;
153 # my $my_cipher = &create_ciphering($key);
154 # {
155 # use bytes;
156 # $msg = "\0"x(16-length($msg)%16).$msg;
157 # }
158 # $msg = $my_cipher->encrypt($msg);
159 # chomp($msg = &encode_base64($msg));
160 # # there are no newlines allowed inside msg
161 # $msg=~ s/\n//g;
162 # return $msg;
163 #}
166 #=== FUNCTION ================================================================
167 # NAME: decrypt_msg
168 # PARAMETERS: crypted_msg - string - message to decrypt
169 # my_cipher - ref - reference to a Crypt::Rijndael object
170 # RETURNS: msg - string - decrypted message
171 # DESCRIPTION: decrypts the incoming message with the Crypt::Rijndael module
172 #===============================================================================
173 #sub decrypt_msg {
174 # my ($msg, $my_cipher) = @_ ;
175 #
176 # if(defined $msg && defined $my_cipher) {
177 # $msg = &decode_base64($msg);
178 # }
179 # $msg = $my_cipher->decrypt($msg);
180 # $msg =~ s/\0*//g;
181 # return $msg;
182 # my ($msg, $key) = @_ ;
183 # $msg = &decode_base64($msg);
184 # my $my_cipher = &create_ciphering($key);
185 # $msg = $my_cipher->decrypt($msg);
186 # $msg =~ s/\0*//g;
187 # return $msg;
188 #}
191 #=== FUNCTION ================================================================
192 # NAME: create_ciphering
193 # PARAMETERS: passwd - string - used to create ciphering
194 # RETURNS: cipher - object
195 # DESCRIPTION: creates a Crypt::Rijndael::MODE_CBC object with passwd as key
196 #===============================================================================
197 #sub create_ciphering {
198 # my ($passwd) = @_;
199 # $passwd = substr(md5_hex("$passwd") x 32, 0, 32);
200 # my $iv = substr(md5_hex('GONICUS GmbH'),0, 16);
201 #
202 # #daemon_log("iv: $iv", 7);
203 # #daemon_log("key: $passwd", 7);
204 # my $my_cipher = Crypt::Rijndael->new($passwd , Crypt::Rijndael::MODE_CBC());
205 # $my_cipher->set_iv($iv);
206 # return $my_cipher;
207 #}
210 #=== FUNCTION ================================================================
211 # NAME: open_socket
212 # PARAMETERS: PeerAddr string something like 192.168.1.1 or 192.168.1.1:10000
213 # [PeerPort] string necessary if port not appended by PeerAddr
214 # RETURNS: socket IO::Socket::INET
215 # DESCRIPTION: open a socket to PeerAddr
216 #===============================================================================
217 #sub open_socket {
218 # my ($PeerAddr, $PeerPort) = @_ ;
219 # if(defined($PeerPort)){
220 # $PeerAddr = $PeerAddr.":".$PeerPort;
221 # }
222 # my $socket;
223 # $socket = new IO::Socket::INET(PeerAddr => $PeerAddr,
224 # Porto => "tcp",
225 # Type => SOCK_STREAM,
226 # Timeout => 5,
227 # );
228 # if(not defined $socket) {
229 # return;
230 # }
231 # &daemon_log("open_socket: $PeerAddr", 7);
232 # return $socket;
233 #}
236 sub get_time {
237 my ($seconds, $minutes, $hours, $monthday, $month,
238 $year, $weekday, $yearday, $sommertime) = localtime(time);
239 $hours = $hours < 10 ? $hours = "0".$hours : $hours;
240 $minutes = $minutes < 10 ? $minutes = "0".$minutes : $minutes;
241 $seconds = $seconds < 10 ? $seconds = "0".$seconds : $seconds;
242 $month+=1;
243 $month = $month < 10 ? $month = "0".$month : $month;
244 $monthday = $monthday < 10 ? $monthday = "0".$monthday : $monthday;
245 $year+=1900;
246 return "$year$month$monthday$hours$minutes$seconds";
248 }
251 #=== FUNCTION ================================================================
252 # NAME: build_msg
253 # DESCRIPTION: Send a message to a destination
254 # PARAMETERS: [header] Name of the header
255 # [from] sender ip
256 # [to] recipient ip
257 # [data] Hash containing additional attributes for the xml
258 # package
259 # RETURNS: nothing
260 #===============================================================================
261 sub build_msg ($$$$) {
262 my ($header, $from, $to, $data) = @_;
264 my $out_hash = &create_xml_hash($header, $from, $to);
266 while ( my ($key, $value) = each(%$data) ) {
267 if(ref($value) eq 'ARRAY'){
268 map(&add_content2xml_hash($out_hash, $key, $_), @$value);
269 } else {
270 &add_content2xml_hash($out_hash, $key, $value);
271 }
272 }
273 my $out_msg = &create_xml_string($out_hash);
274 return $out_msg;
275 }
278 sub get_where_statement {
279 my ($msg, $msg_hash) = @_;
280 my $error= 0;
282 my $clause_str= "";
283 if( (not exists $msg_hash->{'where'}) || (not exists @{$msg_hash->{'where'}}[0]->{'clause'}) ) {
284 $error++;
285 }
287 if( $error == 0 ) {
288 my @clause_l;
289 my @where = @{@{$msg_hash->{'where'}}[0]->{'clause'}};
290 foreach my $clause (@where) {
291 my $connector = $clause->{'connector'}[0];
292 if( not defined $connector ) { $connector = "AND"; }
293 $connector = uc($connector);
294 delete($clause->{'connector'});
296 my @phrase_l ;
297 foreach my $phrase (@{$clause->{'phrase'}}) {
298 my $operator = "=";
299 if( exists $phrase->{'operator'} ) {
300 my $op = $op_hash->{$phrase->{'operator'}[0]};
301 if( not defined $op ) {
302 &main::daemon_log("Can not translate operator '$operator' in where ".
303 "statement to sql valid syntax. Please use 'eq', ".
304 "'ne', 'ge', 'gt', 'le', 'lt' in xml message\n", 1);
305 &main::daemon_log($msg, 8);
306 $op = "=";
307 }
308 $operator = $op;
309 delete($phrase->{'operator'});
310 }
312 my @xml_tags = keys %{$phrase};
313 my $tag = $xml_tags[0];
314 my $val = $phrase->{$tag}[0];
315 push(@phrase_l, "$tag$operator'$val'");
316 }
317 my $clause_str .= join(" $connector ", @phrase_l);
318 push(@clause_l, $clause_str);
319 }
321 if( not 0 == @clause_l ) {
322 $clause_str = join(" AND ", @clause_l);
323 $clause_str = "WHERE $clause_str ";
324 }
325 }
327 return $clause_str;
328 }
330 sub get_select_statement {
331 my ($msg, $msg_hash)= @_;
332 my $select = "*";
333 if( exists $msg_hash->{'select'} ) {
334 my $select_l = \@{$msg_hash->{'select'}};
335 $select = join(' AND ', @{$select_l});
336 }
337 return $select;
338 }
341 sub get_update_statement {
342 my ($msg, $msg_hash) = @_;
343 my $error= 0;
344 my $update_str= "";
345 my @update_l;
347 if( not exists $msg_hash->{'update'} ) { $error++; };
349 if( $error == 0 ) {
350 my $update= @{$msg_hash->{'update'}}[0];
351 while( my ($tag, $val) = each %{$update} ) {
352 my $val= @{$update->{$tag}}[0];
353 push(@update_l, "$tag='$val'");
354 }
355 if( 0 == @update_l ) { $error++; };
356 }
358 if( $error == 0 ) {
359 $update_str= join(', ', @update_l);
360 $update_str= "SET $update_str ";
361 }
363 return $update_str;
364 }
366 sub get_limit_statement {
367 my ($msg, $msg_hash)= @_;
368 my $error= 0;
369 my $limit_str = "";
370 my ($from, $to);
372 if( not exists $msg_hash->{'limit'} ) { $error++; };
374 if( $error == 0 ) {
375 eval {
376 my $limit= @{$msg_hash->{'limit'}}[0];
377 $from= @{$limit->{'from'}}[0];
378 $to= @{$limit->{'to'}}[0];
379 };
380 if( $@ ) {
381 $error++;
382 }
383 }
385 if( $error == 0 ) {
386 $limit_str= "LIMIT $from, $to";
387 }
389 return $limit_str;
390 }
392 sub get_orderby_statement {
393 my ($msg, $msg_hash)= @_;
394 my $error= 0;
395 my $order_str= "";
396 my $order;
398 if( not exists $msg_hash->{'orderby'} ) { $error++; };
400 if( $error == 0) {
401 eval {
402 $order= @{$msg_hash->{'orderby'}}[0];
403 };
404 if( $@ ) {
405 $error++;
406 }
407 }
409 if( $error == 0 ) {
410 $order_str= "ORDER BY $order";
411 }
413 return $order_str;
414 }
416 sub get_dns_domains() {
417 my $line;
418 my @searches;
419 open(RESOLV, "</etc/resolv.conf") or return @searches;
420 while(<RESOLV>){
421 $line= $_;
422 chomp $line;
423 $line =~ s/^\s+//;
424 $line =~ s/\s+$//;
425 $line =~ s/\s+/ /;
426 if ($line =~ /^domain (.*)$/ ){
427 push(@searches, $1);
428 } elsif ($line =~ /^search (.*)$/ ){
429 push(@searches, split(/ /, $1));
430 }
431 }
432 close(RESOLV);
434 my %tmp = map { $_ => 1 } @searches;
435 @searches = sort keys %tmp;
437 return @searches;
438 }
440 1;