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1 | # SmoothWall CGIs | |
2 | # | |
3 | # This code is distributed under the terms of the GPL | |
4 | # | |
5 | # (c) The SmoothWall Team | |
6 | # Copyright (C) 2002 Alex Hudson - getcgihash() rewrite | |
7 | # Copyright (C) 2002 Bob Grant <bob@cache.ucr.edu> - validmac() | |
8 | # Copyright (c) 2002/04/13 Steve Bootes - add alias section, helper functions | |
9 | # Copyright (c) 2002/08/23 Mark Wormgoor <mark@wormgoor.com> validfqdn() | |
10 | # Copyright (c) 2003/09/11 Darren Critchley <darrenc@telus.net> srtarray() | |
11 | # | |
12 | # $Id: general-functions.pl,v 1.1.2.26 2006/01/04 16:33:55 franck78 Exp $ | |
13 | # | |
14 | ||
15 | package General; | |
16 | ||
17 | use strict; | |
18 | use Socket; | |
19 | use IO::Socket; | |
20 | use Net::SSLeay; | |
21 | use Net::IPv4Addr qw(:all); | |
22 | $|=1; # line buffering | |
23 | ||
24 | $General::version = 'VERSION'; | |
25 | $General::swroot = 'CONFIG_ROOT'; | |
26 | $General::noipprefix = 'noipg-'; | |
27 | $General::adminmanualurl = 'http://wiki.ipfire.org'; | |
28 | ||
29 | # | |
30 | # log ("message") use default 'ipcop' tag | |
31 | # log ("tag","message") use your tag | |
32 | # | |
33 | sub log | |
34 | { | |
35 | my $tag='ipfire'; | |
36 | $tag = shift if (@_>1); | |
37 | my $logmessage = $_[0]; | |
38 | $logmessage =~ /([\w\W]*)/; | |
39 | $logmessage = $1; | |
40 | system('logger', '-t', $tag, $logmessage); | |
41 | } | |
42 | ||
43 | sub readhash | |
44 | { | |
45 | my $filename = $_[0]; | |
46 | my $hash = $_[1]; | |
47 | my ($var, $val); | |
48 | ||
49 | ||
50 | # Some ipcop code expects that readhash 'complete' the hash if new entries | |
51 | # are presents. Not clear it !!! | |
52 | #%$hash = (); | |
53 | ||
54 | open(FILE, $filename) or die "Unable to read file $filename"; | |
55 | ||
56 | while (<FILE>) | |
57 | { | |
58 | chop; | |
59 | ($var, $val) = split /=/, $_, 2; | |
60 | if ($var) | |
61 | { | |
62 | $val =~ s/^\'//g; | |
63 | $val =~ s/\'$//g; | |
64 | ||
65 | # Untaint variables read from hash | |
66 | # trim space from begin and end | |
67 | $var =~ s/^\s+//; | |
68 | $var =~ s/\s+$//; | |
69 | $var =~ /([A-Za-z0-9_-]*)/; | |
70 | $var = $1; | |
71 | $val =~ /([\w\W]*)/; | |
72 | $val = $1; | |
73 | $hash->{$var} = $val; | |
74 | } | |
75 | } | |
76 | close FILE; | |
77 | } | |
78 | ||
79 | ||
80 | sub writehash | |
81 | { | |
82 | my $filename = $_[0]; | |
83 | my $hash = $_[1]; | |
84 | my ($var, $val); | |
85 | ||
86 | # write cgi vars to the file. | |
87 | open(FILE, ">${filename}") or die "Unable to write file $filename"; | |
88 | flock FILE, 2; | |
89 | foreach $var (keys %$hash) | |
90 | { | |
91 | if ( $var eq "__CGI__"){next;} | |
92 | $val = $hash->{$var}; | |
93 | # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y | |
94 | # location of the mouse are submitted as well, this was being written to the settings file causing | |
95 | # some serious grief! This skips the variable.x and variable.y | |
96 | if (!($var =~ /(.x|.y)$/)) { | |
97 | if ($val =~ / /) { | |
98 | $val = "\'$val\'"; } | |
99 | if (!($var =~ /^ACTION/)) { | |
100 | print FILE "${var}=${val}\n"; } | |
101 | } | |
102 | } | |
103 | close FILE; | |
104 | } | |
105 | ||
106 | sub writehashpart | |
107 | { | |
108 | # This function replaces the given hash in the original hash by keeping the old | |
109 | # content and just replacing the new content | |
110 | ||
111 | my $filename = $_[0]; | |
112 | my $newhash = $_[1]; | |
113 | my %oldhash; | |
114 | my ($var, $val); | |
115 | ||
116 | readhash("${filename}", \%oldhash); | |
117 | ||
118 | foreach $var (keys %$newhash){ | |
119 | $oldhash{$var}=$newhash->{$var}; | |
120 | } | |
121 | ||
122 | # write cgi vars to the file. | |
123 | open(FILE, ">${filename}") or die "Unable to write file $filename"; | |
124 | flock FILE, 2; | |
125 | foreach $var (keys %oldhash) | |
126 | { | |
127 | if ( $var eq "__CGI__"){next;} | |
128 | $val = $oldhash{$var}; | |
129 | # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y | |
130 | # location of the mouse are submitted as well, this was being written to the settings file causing | |
131 | # some serious grief! This skips the variable.x and variable.y | |
132 | if (!($var =~ /(.x|.y)$/)) { | |
133 | if ($val =~ / /) { | |
134 | $val = "\'$val\'"; } | |
135 | if (!($var =~ /^ACTION/)) { | |
136 | print FILE "${var}=${val}\n"; } | |
137 | } | |
138 | } | |
139 | close FILE; | |
140 | } | |
141 | ||
142 | sub age | |
143 | { | |
144 | my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, | |
145 | $atime, $mtime, $ctime, $blksize, $blocks) = stat $_[0]; | |
146 | my $now = time; | |
147 | ||
148 | my $totalsecs = $now - $mtime; | |
149 | my $days = int($totalsecs / 86400); | |
150 | my $totalhours = int($totalsecs / 3600); | |
151 | my $hours = $totalhours % 24; | |
152 | my $totalmins = int($totalsecs / 60); | |
153 | my $mins = $totalmins % 60; | |
154 | my $secs = $totalsecs % 60; | |
155 | ||
156 | return "${days}d ${hours}h ${mins}m ${secs}s"; | |
157 | } | |
158 | ||
159 | sub validip | |
160 | { | |
161 | my $ip = $_[0]; | |
162 | ||
163 | if (!($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)) { | |
164 | return 0; } | |
165 | else | |
166 | { | |
167 | my @octets = ($1, $2, $3, $4); | |
168 | foreach $_ (@octets) | |
169 | { | |
170 | if (/^0./) { | |
171 | return 0; } | |
172 | if ($_ < 0 || $_ > 255) { | |
173 | return 0; } | |
174 | } | |
175 | return 1; | |
176 | } | |
177 | } | |
178 | ||
179 | sub validmask | |
180 | { | |
181 | my $mask = $_[0]; | |
182 | ||
183 | # secord part an ip? | |
184 | if (&validip($mask)) { | |
185 | return 1; } | |
186 | # second part a number? | |
187 | if (/^0/) { | |
188 | return 0; } | |
189 | if (!($mask =~ /^\d+$/)) { | |
190 | return 0; } | |
191 | if ($mask >= 0 && $mask <= 32) { | |
192 | return 1; } | |
193 | return 0; | |
194 | } | |
195 | ||
196 | sub validipormask | |
197 | { | |
198 | my $ipormask = $_[0]; | |
199 | ||
200 | # see if it is a IP only. | |
201 | if (&validip($ipormask)) { | |
202 | return 1; } | |
203 | # split it into number and mask. | |
204 | if (!($ipormask =~ /^(.*?)\/(.*?)$/)) { | |
205 | return 0; } | |
206 | my $ip = $1; | |
207 | my $mask = $2; | |
208 | # first part not a ip? | |
209 | if (!(&validip($ip))) { | |
210 | return 0; } | |
211 | return &validmask($mask); | |
212 | } | |
213 | ||
214 | sub subtocidr | |
215 | { | |
216 | #gets: Subnet in decimal (255.255.255.0) | |
217 | #Gives: 24 (The cidr of network) | |
218 | my ($byte1, $byte2, $byte3, $byte4) = split(/\./, $_[0].".0.0.0.0"); | |
219 | my $num = ($byte1 * 16777216) + ($byte2 * 65536) + ($byte3 * 256) + $byte4; | |
220 | my $bin = unpack("B*", pack("N", $num)); | |
221 | my $count = ($bin =~ tr/1/1/); | |
222 | return $count; | |
223 | } | |
224 | ||
225 | sub cidrtosub | |
226 | { | |
227 | #gets: Cidr of network (20-30 for ccd) | |
228 | #Konverts 30 to 255.255.255.252 e.g | |
229 | my $cidr=$_[0]; | |
230 | my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr); | |
231 | return "$netmask"; | |
232 | } | |
233 | ||
234 | sub iporsubtodec | |
235 | { | |
236 | #Gets: Ip address or subnetmask in decimal oder CIDR | |
237 | #Gives: What it gets only in CIDR format | |
238 | my $subnet=$_[0]; | |
239 | my $net; | |
240 | my $mask; | |
241 | my $full=0; | |
242 | if ($subnet =~ /^(.*?)\/(.*?)$/) { | |
243 | ($net,$mask) = split (/\//,$subnet); | |
244 | $full=1; | |
245 | return "$subnet"; | |
246 | }else{ | |
247 | $mask=$subnet; | |
248 | } | |
249 | #Subnet already in decimal and valid? | |
250 | if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { | |
251 | for (my $i=8;$i<=32;$i++){ | |
252 | if (&General::cidrtosub($i) eq $mask){ | |
253 | if ($full == 0){return $mask;}else{ | |
254 | return $net."/".$mask; | |
255 | } | |
256 | } | |
257 | } | |
258 | } | |
259 | #Subnet in binary format? | |
260 | if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){ | |
261 | if($full == 0){ return &General::cidrtosub($mask);}else{ | |
262 | return $net."/".&General::cidrtosub($mask); | |
263 | } | |
264 | }else{ | |
265 | return 3; | |
266 | } | |
267 | return 3; | |
268 | } | |
269 | ||
270 | ||
271 | sub iporsubtocidr | |
272 | { | |
273 | #gets: Ip Address or subnetmask in decimal oder CIDR | |
274 | #Gives: What it gets only in CIDR format | |
275 | my $subnet=$_[0]; | |
276 | my $net; | |
277 | my $mask; | |
278 | my $full=0; | |
279 | if ($subnet =~ /^(.*?)\/(.*?)$/) { | |
280 | ($net,$mask) = split (/\//,$subnet); | |
281 | $full=1; | |
282 | }else{ | |
283 | $mask=$subnet; | |
284 | } | |
285 | #Subnet in decimal and valid? | |
286 | if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { | |
287 | for (my $i=8;$i<=32;$i++){ | |
288 | if (&General::cidrtosub($i) eq $mask){ | |
289 | if ($full == 0){return &General::subtocidr($mask);}else{ | |
290 | return $net."/".&General::subtocidr($mask); | |
291 | } | |
292 | } | |
293 | } | |
294 | } | |
295 | #Subnet already in binary format? | |
296 | if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){ | |
297 | if($full == 0){ return $mask;}else{ | |
298 | return $net."/".$mask; | |
299 | } | |
300 | }else{ | |
301 | return 3; | |
302 | } | |
303 | return 3; | |
304 | } | |
305 | ||
306 | sub getnetworkip | |
307 | { | |
308 | #Gets: IP, CIDR (10.10.10.0-255, 24) | |
309 | #Gives: 10.10.10.0 | |
310 | my ($ccdip,$ccdsubnet) = @_; | |
311 | my $ip_address_binary = inet_aton( $ccdip ); | |
312 | my $netmask_binary = ~pack("N", (2**(32-$ccdsubnet))-1); | |
313 | my $network_address = inet_ntoa( $ip_address_binary & $netmask_binary ); | |
314 | return $network_address; | |
315 | } | |
316 | ||
317 | sub getccdbc | |
318 | { | |
319 | #Gets: IP in Form ("192.168.0.0/24") | |
320 | #Gives: Broadcastaddress of network | |
321 | my $ccdnet=$_; | |
322 | my ($ccdip,$ccdsubnet) = split "/",$ccdnet; | |
323 | my $ip_address_binary = inet_aton( $ccdip ); | |
324 | my $netmask_binary = ~pack("N", (2**(32-$ccdsubnet))-1); | |
325 | my $broadcast_address = inet_ntoa( $ip_address_binary | ~$netmask_binary ); | |
326 | return $broadcast_address; | |
327 | } | |
328 | ||
329 | sub ip2dec | |
330 | { | |
331 | my $ip_num; | |
332 | my $ip=$_[0]; | |
333 | if ( $ip =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/ ) { | |
334 | $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4); | |
335 | } else { | |
336 | $ip_num = -1; | |
337 | } | |
338 | $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4); | |
339 | return($ip_num); | |
340 | } | |
341 | ||
342 | sub dec2ip | |
343 | { | |
344 | my $ip; | |
345 | my $ip_num=$_[0]; | |
346 | my $o1=$ip_num%256; | |
347 | $ip_num=int($ip_num/256); | |
348 | my $o2=$ip_num%256; | |
349 | $ip_num=int($ip_num/256); | |
350 | my $o3=$ip_num%256; | |
351 | $ip_num=int($ip_num/256); | |
352 | my $o4=$ip_num%256; | |
353 | $ip="$o4.$o3.$o2.$o1"; | |
354 | return ($ip); | |
355 | } | |
356 | ||
357 | sub getnextip | |
358 | { | |
359 | my $decip=&ip2dec($_[0]); | |
360 | $decip=$decip+4; | |
361 | return &dec2ip($decip); | |
362 | } | |
363 | ||
364 | sub getlastip | |
365 | { | |
366 | my $decip=&ip2dec($_[0]); | |
367 | $decip--; | |
368 | return &dec2ip($decip); | |
369 | } | |
370 | ||
371 | sub validipandmask | |
372 | { | |
373 | #Gets: Ip address in 192.168.0.0/24 or 192.168.0.0/255.255.255.0 and checks if subnet valid | |
374 | #Gives: True bzw 0 if success or false | |
375 | my $ccdnet=$_[0]; | |
376 | my $subcidr; | |
377 | ||
378 | if (!($ccdnet =~ /^(.*?)\/(.*?)$/)) { | |
379 | return 0; | |
380 | } | |
381 | my ($ccdip,$ccdsubnet)=split (/\//, $ccdnet); | |
382 | #IP valid? | |
383 | if ($ccdip=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1>0 && $1<=255 && $2>=0 && $2<=255 && $3>=0 && $3<=255 && $4<=255 ))) { | |
384 | #Subnet in decimal and valid? | |
385 | if ($ccdsubnet=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { | |
386 | for (my $i=8;$i<=32;$i++){ | |
387 | if (&General::cidrtosub($i) eq $ccdsubnet){ | |
388 | return 1; | |
389 | } | |
390 | } | |
391 | #Subnet already in binary format? | |
392 | }elsif ($ccdsubnet=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){ | |
393 | return 1; | |
394 | }else{ | |
395 | return 0; | |
396 | } | |
397 | ||
398 | } | |
399 | return 0; | |
400 | } | |
401 | ||
402 | sub checksubnets | |
403 | { | |
404 | my %ccdconfhash=(); | |
405 | my @ccdconf=(); | |
406 | my $ccdname=$_[0]; | |
407 | my $ccdnet=$_[1]; | |
408 | my $errormessage; | |
409 | my ($ip,$cidr)=split(/\//,$ccdnet); | |
410 | $cidr=&iporsubtocidr($cidr); | |
411 | #get OVPN-Subnet (dynamic range) | |
412 | my %ovpnconf=(); | |
413 | &readhash("${General::swroot}/ovpn/settings", \%ovpnconf); | |
414 | my ($ovpnip,$ovpncidr)= split (/\//,$ovpnconf{'DOVPN_SUBNET'}); | |
415 | $ovpncidr=&iporsubtocidr($ovpncidr); | |
416 | #check if we try to use same network as ovpn server | |
417 | if ("$ip/$cidr" eq "$ovpnip/$ovpncidr") { | |
418 | $errormessage=$errormessage.$Lang::tr{'ccd err isovpnnet'}."<br>"; | |
419 | return $errormessage; | |
420 | } | |
421 | #check if we use a network-name/subnet that already exists | |
422 | &readhasharray("${General::swroot}/ovpn/ccd.conf", \%ccdconfhash); | |
423 | foreach my $key (keys %ccdconfhash) { | |
424 | @ccdconf=split(/\//,$ccdconfhash{$key}[1]); | |
425 | if ($ccdname eq $ccdconfhash{$key}[0]) | |
426 | { | |
427 | $errormessage=$errormessage.$Lang::tr{'ccd err nameexist'}."<br>"; | |
428 | return $errormessage; | |
429 | } | |
430 | my ($newip,$newsub) = split(/\//,$ccdnet); | |
431 | if (&IpInSubnet($newip,$ccdconf[0],&iporsubtodec($ccdconf[1]))) | |
432 | { | |
433 | $errormessage=$errormessage.$Lang::tr{'ccd err issubnet'}."<br>"; | |
434 | return $errormessage; | |
435 | } | |
436 | } | |
437 | #check if we use a ipsec right network which is already defined | |
438 | my %ipsecconf=(); | |
439 | &General::readhasharray("${General::swroot}/vpn/config", \%ipsecconf); | |
440 | foreach my $key (keys %ipsecconf){ | |
441 | if ($ipsecconf{$key}[11] ne ''){ | |
442 | my ($ipsecip,$ipsecsub) = split (/\//, $ipsecconf{$key}[11]); | |
443 | $ipsecsub=&iporsubtodec($ipsecsub); | |
444 | if($ipsecconf{$key}[1] ne $ccdname){ | |
445 | if ( &IpInSubnet ($ip,$ipsecip,$ipsecsub) ){ | |
446 | $errormessage=$Lang::tr{'ccd err isipsecnet'}." Name: $ipsecconf{$key}[1]"; | |
447 | return $errormessage; | |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
452 | #check if we use one of ipfire's networks (green,orange,blue) | |
453 | my %ownnet=(); | |
454 | &readhash("${General::swroot}/ethernet/settings", \%ownnet); | |
455 | if (($ownnet{'GREEN_NETADDRESS'} ne '' && $ownnet{'GREEN_NETADDRESS'} ne '0.0.0.0') && &IpInSubnet($ownnet{'GREEN_NETADDRESS'},$ip,&iporsubtodec($cidr))){ $errormessage=$Lang::tr{'ccd err green'};return $errormessage;} | |
456 | if (($ownnet{'ORANGE_NETADDRESS'} ne '' && $ownnet{'ORANGE_NETADDRESS'} ne '0.0.0.0') && &IpInSubnet($ownnet{'ORANGE_NETADDRESS'},$ip,&iporsubtodec($cidr))){ $errormessage=$Lang::tr{'ccd err orange'};return $errormessage;} | |
457 | if (($ownnet{'BLUE_NETADDRESS'} ne '' && $ownnet{'BLUE_NETADDRESS'} ne '0.0.0.0') && &IpInSubnet($ownnet{'BLUE_NETADDRESS'},$ip,&iporsubtodec($cidr))){ $errormessage=$Lang::tr{'ccd err blue'};return $errormessage;} | |
458 | if (($ownnet{'RED_NETADDRESS'} ne '' && $ownnet{'RED_NETADDRESS'} ne '0.0.0.0') && &IpInSubnet($ownnet{'RED_NETADDRESS'},$ip,&iporsubtodec($cidr))){ $errormessage=$Lang::tr{'ccd err red'};return $errormessage;} | |
459 | } | |
460 | ||
461 | ||
462 | sub validport | |
463 | { | |
464 | $_ = $_[0]; | |
465 | ||
466 | if (!/^\d+$/) { | |
467 | return 0; } | |
468 | if (/^0./) { | |
469 | return 0; } | |
470 | if ($_ >= 1 && $_ <= 65535) { | |
471 | return 1; } | |
472 | return 0; | |
473 | } | |
474 | ||
475 | sub validproxyport | |
476 | { | |
477 | $_ = $_[0]; | |
478 | ||
479 | if (!/^\d+$/) { | |
480 | return 0; } | |
481 | if (/^0./) { | |
482 | return 0; } | |
483 | if ($_ == 53 || $_ == 222 || $_ == 444 || $_ == 81 ) { | |
484 | return 0; } | |
485 | elsif ($_ >= 1 && $_ <= 65535) { | |
486 | return 1; } | |
487 | return 0; | |
488 | } | |
489 | ||
490 | sub validmac | |
491 | { | |
492 | my $checkmac = $_[0]; | |
493 | my $ot = '[0-9a-f]{2}'; # 2 Hex digits (one octet) | |
494 | if ($checkmac !~ /^$ot:$ot:$ot:$ot:$ot:$ot$/i) | |
495 | { | |
496 | return 0; | |
497 | } | |
498 | return 1; | |
499 | } | |
500 | ||
501 | sub validhostname | |
502 | { | |
503 | # Checks a hostname against RFC1035 | |
504 | my $hostname = $_[0]; | |
505 | ||
506 | # Each part should be at least two characters in length | |
507 | # but no more than 63 characters | |
508 | if (length ($hostname) < 1 || length ($hostname) > 63) { | |
509 | return 0;} | |
510 | # Only valid characters are a-z, A-Z, 0-9 and - | |
511 | if ($hostname !~ /^[a-zA-Z0-9-\s]*$/) { | |
512 | return 0;} | |
513 | # First character can only be a letter or a digit | |
514 | if (substr ($hostname, 0, 1) !~ /^[a-zA-Z0-9]*$/) { | |
515 | return 0;} | |
516 | # Last character can only be a letter or a digit | |
517 | if (substr ($hostname, -1, 1) !~ /^[a-zA-Z0-9]*$/) { | |
518 | return 0;} | |
519 | return 1; | |
520 | } | |
521 | ||
522 | sub validdomainname | |
523 | { | |
524 | my $part; | |
525 | ||
526 | # Checks a domain name against RFC1035 | |
527 | my $domainname = $_[0]; | |
528 | my @parts = split (/\./, $domainname); # Split hostname at the '.' | |
529 | ||
530 | foreach $part (@parts) { | |
531 | # Each part should be at least two characters in length | |
532 | # but no more than 63 characters | |
533 | if (length ($part) < 2 || length ($part) > 63) { | |
534 | return 0;} | |
535 | # Only valid characters are a-z, A-Z, 0-9 and - | |
536 | if ($part !~ /^[a-zA-Z0-9-]*$/) { | |
537 | return 0;} | |
538 | # First character can only be a letter or a digit | |
539 | if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) { | |
540 | return 0;} | |
541 | # Last character can only be a letter or a digit | |
542 | if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) { | |
543 | return 0;} | |
544 | } | |
545 | return 1; | |
546 | } | |
547 | ||
548 | sub validfqdn | |
549 | { | |
550 | my $part; | |
551 | ||
552 | # Checks a fully qualified domain name against RFC1035 | |
553 | my $fqdn = $_[0]; | |
554 | my @parts = split (/\./, $fqdn); # Split hostname at the '.' | |
555 | if (scalar(@parts) < 2) { # At least two parts should | |
556 | return 0;} # exist in a FQDN | |
557 | # (i.e. hostname.domain) | |
558 | foreach $part (@parts) { | |
559 | # Each part should be at least one character in length | |
560 | # but no more than 63 characters | |
561 | if (length ($part) < 1 || length ($part) > 63) { | |
562 | return 0;} | |
563 | # Only valid characters are a-z, A-Z, 0-9 and - | |
564 | if ($part !~ /^[a-zA-Z0-9-]*$/) { | |
565 | return 0;} | |
566 | # First character can only be a letter or a digit | |
567 | if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) { | |
568 | return 0;} | |
569 | # Last character can only be a letter or a digit | |
570 | if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) { | |
571 | return 0;} | |
572 | } | |
573 | return 1; | |
574 | } | |
575 | ||
576 | sub validportrange # used to check a port range | |
577 | { | |
578 | my $port = $_[0]; # port values | |
579 | $port =~ tr/-/:/; # replace all - with colons just in case someone used - | |
580 | my $srcdst = $_[1]; # is it a source or destination port | |
581 | ||
582 | if (!($port =~ /^(\d+)\:(\d+)$/)) { | |
583 | ||
584 | if (!(&validport($port))) { | |
585 | if ($srcdst eq 'src'){ | |
586 | return $Lang::tr{'source port numbers'}; | |
587 | } else { | |
588 | return $Lang::tr{'destination port numbers'}; | |
589 | } | |
590 | } | |
591 | } | |
592 | else | |
593 | { | |
594 | my @ports = ($1, $2); | |
595 | if ($1 >= $2){ | |
596 | if ($srcdst eq 'src'){ | |
597 | return $Lang::tr{'bad source range'}; | |
598 | } else { | |
599 | return $Lang::tr{'bad destination range'}; | |
600 | } | |
601 | } | |
602 | foreach $_ (@ports) | |
603 | { | |
604 | if (!(&validport($_))) { | |
605 | if ($srcdst eq 'src'){ | |
606 | return $Lang::tr{'source port numbers'}; | |
607 | } else { | |
608 | return $Lang::tr{'destination port numbers'}; | |
609 | } | |
610 | } | |
611 | } | |
612 | return; | |
613 | } | |
614 | } | |
615 | ||
616 | # Test if IP is within a subnet | |
617 | # Call: IpInSubnet (Addr, Subnet, Subnet Mask) | |
618 | # Subnet can be an IP of the subnet: 10.0.0.0 or 10.0.0.1 | |
619 | # Everything in dottted notation | |
620 | # Return: TRUE/FALSE | |
621 | sub IpInSubnet | |
622 | { | |
623 | my $ip = unpack('N', &Socket::inet_aton(shift)); | |
624 | my $start = unpack('N', &Socket::inet_aton(shift)); | |
625 | my $mask = unpack('N', &Socket::inet_aton(shift)); | |
626 | $start &= $mask; # base of subnet... | |
627 | my $end = $start + ~$mask; | |
628 | return (($ip >= $start) && ($ip <= $end)); | |
629 | } | |
630 | ||
631 | # | |
632 | # Return the following IP (IP+1) in dotted notation. | |
633 | # Call: NextIP ('1.1.1.1'); | |
634 | # Return: '1.1.1.2' | |
635 | # | |
636 | sub NextIP | |
637 | { | |
638 | return &Socket::inet_ntoa( pack("N", 1 + unpack('N', &Socket::inet_aton(shift)) | |
639 | ) | |
640 | ); | |
641 | } | |
642 | sub NextIP2 | |
643 | { | |
644 | return &Socket::inet_ntoa( pack("N", 4 + unpack('N', &Socket::inet_aton(shift)) | |
645 | ) | |
646 | ); | |
647 | } | |
648 | sub ipcidr | |
649 | { | |
650 | my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift); | |
651 | return "$ip\/$cidr"; | |
652 | } | |
653 | ||
654 | sub ipcidr2msk | |
655 | { | |
656 | my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift); | |
657 | my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr); | |
658 | return "$ip\/$netmask"; | |
659 | } | |
660 | ||
661 | ||
662 | sub validemail { | |
663 | my $mail = shift; | |
664 | return 0 if ( $mail !~ /^[0-9a-zA-Z\.\-\_]+\@[0-9a-zA-Z\.\-]+$/ ); | |
665 | return 0 if ( $mail =~ /^[^0-9a-zA-Z]|[^0-9a-zA-Z]$/); | |
666 | return 0 if ( $mail !~ /([0-9a-zA-Z]{1})\@./ ); | |
667 | return 0 if ( $mail !~ /.\@([0-9a-zA-Z]{1})/ ); | |
668 | return 0 if ( $mail =~ /.\.\-.|.\-\..|.\.\..|.\-\-./g ); | |
669 | return 0 if ( $mail =~ /.\.\_.|.\-\_.|.\_\..|.\_\-.|.\_\_./g ); | |
670 | return 0 if ( $mail !~ /\.([a-zA-Z]{2,4})$/ ); | |
671 | return 1; | |
672 | } | |
673 | ||
674 | # | |
675 | # Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray) | |
676 | # The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use | |
677 | # this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... . | |
678 | # | |
679 | sub readhasharray { | |
680 | my ($filename, $hash) = @_; | |
681 | %$hash = (); | |
682 | ||
683 | open(FILE, $filename) or die "Unable to read file $filename"; | |
684 | ||
685 | while (<FILE>) { | |
686 | my ($key, $rest, @temp); | |
687 | chomp; | |
688 | ($key, $rest) = split (/,/, $_, 2); | |
689 | if ($key =~ /^[0-9]+$/) { | |
690 | @temp = split (/,/, $rest); | |
691 | $hash->{$key} = \@temp; | |
692 | } | |
693 | } | |
694 | close FILE; | |
695 | return; | |
696 | } | |
697 | ||
698 | sub writehasharray { | |
699 | my ($filename, $hash) = @_; | |
700 | my ($key, @temp, $i); | |
701 | ||
702 | open(FILE, ">$filename") or die "Unable to write to file $filename"; | |
703 | ||
704 | foreach $key (keys %$hash) { | |
705 | if ($key =~ /^[0-9]+$/) { | |
706 | print FILE "$key"; | |
707 | foreach $i (0 .. $#{$hash->{$key}}) { | |
708 | print FILE ",$hash->{$key}[$i]"; | |
709 | } | |
710 | print FILE "\n"; | |
711 | } | |
712 | } | |
713 | close FILE; | |
714 | return; | |
715 | } | |
716 | ||
717 | sub findhasharraykey { | |
718 | foreach my $i (1 .. 1000000) { | |
719 | if ( ! exists $_[0]{$i}) { | |
720 | return $i; | |
721 | } | |
722 | } | |
723 | } | |
724 | ||
725 | sub srtarray | |
726 | # Darren Critchley - darrenc@telus.net - (c) 2003 | |
727 | # &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted) | |
728 | # This subroutine will take the following parameters: | |
729 | # ColumnNumber = the column which you want to sort on, starts at 1 | |
730 | # AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic | |
731 | # SortDirection = asc or dsc (lowercase) Ascending or Descending sort | |
732 | # ArrayToBeSorted = the array that wants sorting | |
733 | # | |
734 | # Returns an array that is sorted to your specs | |
735 | # | |
736 | # If SortOrder is greater than the elements in array, then it defaults to the first element | |
737 | # | |
738 | { | |
739 | my ($colno, $alpnum, $srtdir, @tobesorted) = @_; | |
740 | my @tmparray; | |
741 | my @srtedarray; | |
742 | my $line; | |
743 | my $newline; | |
744 | my $ctr; | |
745 | my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array | |
746 | if ($ttlitems < 1){ # if no items, don't waste our time lets leave | |
747 | return (@tobesorted); | |
748 | } | |
749 | my @tmp = split(/\,/,$tobesorted[0]); | |
750 | $ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array | |
751 | ||
752 | # Darren Critchley - validate parameters | |
753 | if ($colno > $ttlitems){$colno = '1';} | |
754 | $colno--; # remove one from colno to deal with arrays starting at 0 | |
755 | if($colno < 0){$colno = '0';} | |
756 | if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; } | |
757 | if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; } | |
758 | ||
759 | foreach $line (@tobesorted) | |
760 | { | |
761 | chomp($line); | |
762 | if ($line ne '') { | |
763 | my @temp = split(/\,/,$line); | |
764 | # Darren Critchley - juggle the fields so that the one we want to sort on is first | |
765 | my $tmpholder = $temp[0]; | |
766 | $temp[0] = $temp[$colno]; | |
767 | $temp[$colno] = $tmpholder; | |
768 | $newline = ""; | |
769 | for ($ctr=0; $ctr < $ttlitems ; $ctr++) { | |
770 | $newline=$newline . $temp[$ctr] . ","; | |
771 | } | |
772 | chop($newline); | |
773 | push(@tmparray,$newline); | |
774 | } | |
775 | } | |
776 | if ($alpnum eq 'n') { | |
777 | @tmparray = sort {$a <=> $b} @tmparray; | |
778 | } else { | |
779 | @tmparray = (sort @tmparray); | |
780 | } | |
781 | foreach $line (@tmparray) | |
782 | { | |
783 | chomp($line); | |
784 | if ($line ne '') { | |
785 | my @temp = split(/\,/,$line); | |
786 | my $tmpholder = $temp[0]; | |
787 | $temp[0] = $temp[$colno]; | |
788 | $temp[$colno] = $tmpholder; | |
789 | $newline = ""; | |
790 | for ($ctr=0; $ctr < $ttlitems ; $ctr++){ | |
791 | $newline=$newline . $temp[$ctr] . ","; | |
792 | } | |
793 | chop($newline); | |
794 | push(@srtedarray,$newline); | |
795 | } | |
796 | } | |
797 | ||
798 | if ($srtdir eq 'dsc') { | |
799 | @tmparray = reverse(@srtedarray); | |
800 | return (@tmparray); | |
801 | } else { | |
802 | return (@srtedarray); | |
803 | } | |
804 | } | |
805 | ||
806 | sub FetchPublicIp { | |
807 | my %proxysettings; | |
808 | &General::readhash("${General::swroot}/proxy/settings", \%proxysettings); | |
809 | if ($_=$proxysettings{'UPSTREAM_PROXY'}) { | |
810 | my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/); | |
811 | Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} ); | |
812 | } | |
813 | my ($out, $response) = Net::SSLeay::get_http( 'checkip.dyndns.org', | |
814 | 80, | |
815 | "/", | |
816 | Net::SSLeay::make_headers('User-Agent' => 'IPFire' ) | |
817 | ); | |
818 | if ($response =~ m%HTTP/1\.. 200 OK%) { | |
819 | $out =~ /Current IP Address: (\d+.\d+.\d+.\d+)/; | |
820 | return $1; | |
821 | } | |
822 | return ''; | |
823 | } | |
824 | ||
825 | # | |
826 | # Check if hostname.domain provided have IP provided | |
827 | # use gethostbyname to verify that | |
828 | # Params: | |
829 | # IP | |
830 | # hostname | |
831 | # domain | |
832 | # Output | |
833 | # 1 IP matches host.domain | |
834 | # 0 not in sync | |
835 | # | |
836 | sub DyndnsServiceSync ($;$;$) { | |
837 | ||
838 | my ($ip,$hostName,$domain) = @_; | |
839 | my @addresses; | |
840 | ||
841 | #fix me no ip GROUP, what is the name ? | |
842 | $hostName =~ s/$General::noipprefix//; | |
843 | if ($hostName) { #may be empty | |
844 | $hostName = "$hostName.$domain"; | |
845 | @addresses = gethostbyname($hostName); | |
846 | } | |
847 | ||
848 | if ($addresses[0] eq '') { # nothing returned ? | |
849 | $hostName = $domain; # try resolving with domain only | |
850 | @addresses = gethostbyname($hostName); | |
851 | } | |
852 | ||
853 | if ($addresses[0] ne '') { # got something ? | |
854 | #&General::log("name:$addresses[0], alias:$addresses[1]"); | |
855 | # Build clear text list of IP | |
856 | @addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]); | |
857 | if (grep (/$ip/, @addresses)) { | |
858 | return 1; | |
859 | } | |
860 | } | |
861 | return 0; | |
862 | } | |
863 | # | |
864 | # This sub returns the red IP used to compare in DyndnsServiceSync | |
865 | # | |
866 | sub GetDyndnsRedIP { | |
867 | my %settings; | |
868 | &General::readhash("${General::swroot}/ddns/settings", \%settings); | |
869 | ||
870 | open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable'; | |
871 | my $ip = <IP>; | |
872 | close(IP); | |
873 | chomp $ip; | |
874 | ||
875 | if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') || | |
876 | &General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') || | |
877 | &General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0')) | |
878 | { | |
879 | if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') { | |
880 | my $RealIP = &General::FetchPublicIp; | |
881 | $ip = (&General::validip ($RealIP) ? $RealIP : 'unavailable'); | |
882 | } | |
883 | } | |
884 | return $ip; | |
885 | } | |
886 | ||
887 | # Translate ICMP code to text | |
888 | # ref: http://www.iana.org/assignments/icmp-parameters | |
889 | sub GetIcmpDescription ($) { | |
890 | my $index = shift; | |
891 | my @icmp_description = ( | |
892 | 'Echo Reply', #0 | |
893 | 'Unassigned', | |
894 | 'Unassigned', | |
895 | 'Destination Unreachable', | |
896 | 'Source Quench', | |
897 | 'Redirect', | |
898 | 'Alternate Host Address', | |
899 | 'Unassigned', | |
900 | 'Echo', | |
901 | 'Router Advertisement', | |
902 | 'Router Solicitation', #10 | |
903 | 'Time Exceeded', | |
904 | 'Parameter Problem', | |
905 | 'Timestamp', | |
906 | 'Timestamp Reply', | |
907 | 'Information Request', | |
908 | 'Information Reply', | |
909 | 'Address Mask Request', | |
910 | 'Address Mask Reply', | |
911 | 'Reserved (for Security)', | |
912 | 'Reserved (for Robustness Experiment)', #20 | |
913 | 'Reserved', | |
914 | 'Reserved', | |
915 | 'Reserved', | |
916 | 'Reserved', | |
917 | 'Reserved', | |
918 | 'Reserved', | |
919 | 'Reserved', | |
920 | 'Reserved', | |
921 | 'Reserved', | |
922 | 'Traceroute', #30 | |
923 | 'Datagram Conversion Error', | |
924 | 'Mobile Host Redirect', | |
925 | 'IPv6 Where-Are-You', | |
926 | 'IPv6 I-Am-Here', | |
927 | 'Mobile Registration Request', | |
928 | 'Mobile Registration Reply', | |
929 | 'Domain Name Request', | |
930 | 'Domain Name Reply', | |
931 | 'SKIP', | |
932 | 'Photur', #40 | |
933 | 'Experimental'); | |
934 | if ($index>41) {return 'unknown'} else {return @icmp_description[$index]}; | |
935 | } | |
936 | 1; |