9ad5ae46ebcab57a10c82098495c23c4c752b60f
[people/pmueller/ipfire-2.x.git] / html / cgi-bin / ids.cgi
1 #!/usr/bin/perl
2 #
3 # SmoothWall CGIs
4 #
5 # This code is distributed under the terms of the GPL
6 #
7 # (c) The SmoothWall Team
8 #
9
10 use LWP::UserAgent;
11 use File::Copy;
12 use File::Temp qw/ tempfile tempdir /;
13 use strict;
14
15 # enable only the following on debugging purpose
16 #use warnings;
17 #use CGI::Carp 'fatalsToBrowser';
18
19 require '/var/ipfire/general-functions.pl';
20 require "${General::swroot}/lang.pl";
21 require "${General::swroot}/header.pl";
22
23 my %snortsettings=();
24 my %checked=();
25 my %selected=();
26 my %netsettings=();
27 our $errormessage = '';
28 our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
29 our $realmd5 = '';
30 our $results = '';
31 our $tempdir = '';
32 our $url='';
33 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
34
35 &Header::showhttpheaders();
36
37 $snortsettings{'ENABLE_SNORT'} = 'off';
38 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
39 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
40 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
41 $snortsettings{'ACTION'} = '';
42 $snortsettings{'RULES'} = '';
43 $snortsettings{'OINKCODE'} = '';
44 $snortsettings{'INSTALLDATE'} = '';
45 $snortsettings{'INSTALLMD5'} = '';
46
47 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
48
49 if ($snortsettings{'RULES'} eq 'subscripted') {
50 $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT_s.tar.gz";
51 } elsif ($snortsettings{'RULES'} eq 'registered') {
52 $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT.tar.gz";
53 } elsif ($snortsettings{'RULES'} eq 'bleeding') {
54 $url="http://www.bleedingsnort.com/bleeding.rules.tar.gz";
55 } else {
56 $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
57 }
58
59 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'})
60 {
61 $errormessage = $Lang::tr{'invalid input for oink code'} unless (
62 ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/) ||
63 ($snortsettings{'RULESTYPE'} eq 'nothing' ) );
64
65 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
66 if ($snortsettings{'ENABLE_SNORT'} eq 'on')
67 {
68 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
69 } else {
70 unlink "${General::swroot}/snort/enable";
71 }
72 if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
73 {
74 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
75 } else {
76 unlink "${General::swroot}/snort/enable_green";
77 }
78 if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
79 {
80 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
81 } else {
82 unlink "${General::swroot}/snort/enable_blue";
83 }
84 if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
85 {
86 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
87 } else {
88 unlink "${General::swroot}/snort/enable_orange";
89 }
90
91 system('/usr/local/bin/restartsnort','red','orange','blue','green');
92 } else {
93 # INSTALLMD5 is not in the form, so not retrieved by getcgihash
94 &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
95 }
96
97 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
98 $md5 = &getmd5;
99 if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
100 chomp($md5);
101 my $filename = &downloadrulesfile();
102 if (defined $filename) {
103 # Check MD5sum
104 $realmd5 = `/usr/bin/md5sum $filename`;
105 chomp ($realmd5);
106 $realmd5 =~ s/^(\w+)\s.*$/$1/;
107 if ($md5 ne $realmd5) {
108 $errormessage = "$Lang::tr{'invalid md5sum'}";
109 } else {
110 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
111 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules/ 2>&1`;
112 $results .= "</pre>";
113 }
114 unlink ($filename);
115 }
116 }
117 }
118
119 $checked{'ENABLE_SNORT'}{'off'} = '';
120 $checked{'ENABLE_SNORT'}{'on'} = '';
121 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
122 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
123 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
124 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
125 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
126 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
127 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
128 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
129 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
130 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
131 $selected{'RULES'}{'nothing'} = '';
132 $selected{'RULES'}{'bleeding'} = '';
133 $selected{'RULES'}{'community'} = '';
134 $selected{'RULES'}{'registered'} = '';
135 $selected{'RULES'}{'subscripted'} = '';
136 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
137
138 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
139
140 &Header::openbigbox('100%', 'left', '', $errormessage);
141
142 if ($errormessage) {
143 &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
144 print "<class name='base'>$errormessage\n";
145 print "&nbsp;</class>\n";
146 &Header::closebox();
147 }
148
149 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
150 print <<END
151 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
152 <tr>
153 <td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />
154 GREEN Snort</td>
155 </tr>
156 END
157 ;
158 if ($netsettings{'BLUE_DEV'} ne '') {
159 print <<END
160 <tr>
161 <td class='base'><input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />
162 BLUE Snort</td>
163 </tr>
164 END
165 ;
166 }
167 if ($netsettings{'ORANGE_DEV'} ne '') {
168 print <<END
169 <tr>
170 <td class='base'><input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />
171 ORANGE Snort</td>
172 </tr>
173 END
174 ;
175 }
176 print <<END
177 <tr>
178 <td class='base'><input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />
179 RED Snort</td>
180 </tr>
181 <tr>
182 <td><hr /></td>
183 </tr>
184 <tr>
185 <td><b>$Lang::tr{'ids rules update'}</b></td>
186 </tr>
187 <tr>
188 <td><select name='RULES'>
189 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
190 <option value='bleeding' $selected{'RULES'}{'bleeding'} >$Lang::tr{'bleeding rules'}</option>
191 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
192 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
193 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
194 </select>
195 </td>
196 </tr>
197 <tr>
198 <td><br />
199 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
200 <br />
201 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
202 </td>
203 </tr>
204 <tr>
205 <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
206 </tr>
207 <tr>
208 <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
209 END
210 ;
211
212 if ($snortsettings{'INSTALLMD5'} eq $md5) {
213 print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
214 } else {
215 if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
216 $snortsettings{'INSTALLMD5'} = $realmd5;
217 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
218 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
219 }
220 print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
221 }
222 print <<END
223 </tr>
224 </table>
225 <hr />
226 <table width='100%'>
227 <tr>
228 <td width='55%'>&nbsp;</td>
229 <td width='40%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
230 <td width='5%'>
231 &nbsp; <!-- space for future online help link -->
232 </td>
233 </tr>
234 </table>
235 </form>
236 END
237 ;
238
239 if ($results ne '') {
240 print "$results";
241 }
242
243 &Header::closebox();
244 &Header::closebigbox();
245 &Header::closepage();
246
247 sub getmd5 {
248 # Retrieve MD5 sum from $url.md5 file
249 #
250 my $md5buf = &geturl("$url.md5");
251 return undef unless $md5buf;
252
253 if (0) { # 1 to debug
254 my $filename='';
255 my $fh='';
256 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
257 binmode ($fh);
258 syswrite ($fh, $md5buf->content);
259 close($fh);
260 }
261 return $md5buf->content;
262 }
263 sub downloadrulesfile {
264 my $return = &geturl($url);
265 return undef unless $return;
266
267 if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
268 $errormessage = $Lang::tr{'invalid loaded file'};
269 return undef;
270 }
271
272 my $filename='';
273 my $fh='';
274 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
275 binmode ($fh);
276 syswrite ($fh, $return->content);
277 close($fh);
278 return $filename;
279 }
280
281 sub geturl ($) {
282 my $url=$_[0];
283
284 unless (-e "${General::swroot}/red/active") {
285 $errormessage = $Lang::tr{'could not download latest updates'};
286 return undef;
287 }
288
289 my $downloader = LWP::UserAgent->new;
290 $downloader->timeout(5);
291
292 my %proxysettings=();
293 &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
294
295 if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
296 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
297 if ($proxysettings{'UPSTREAM_USER'}) {
298 $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
299 } else {
300 $downloader->proxy("http","http://$peer:$peerport/");
301 }
302 }
303
304 my $return = $downloader->get($url,'Cache-Control','no-cache');
305
306 if ($return->code == 403) {
307 $errormessage = $Lang::tr{'access refused with this oinkcode'};
308 return undef;
309 } elsif (!$return->is_success()) {
310 $errormessage = $Lang::tr{'could not download latest updates'};
311 return undef;
312 }
313
314 return $return;
315
316 }