]>
Commit | Line | Data |
---|---|---|
552b817b MT |
1 | |
2 | #include <stdio.h> | |
3 | #include <netdb.h> | |
4 | #include <string.h> | |
5 | #include <stdlib.h> | |
6 | #include <getopt.h> | |
7 | #include <ctype.h> | |
8 | ||
9 | #include <iptables.h> | |
10 | ||
11 | #include "ipt_ipp2p.h" | |
12 | ||
13 | static void | |
14 | help(void) | |
15 | { | |
16 | printf( | |
17 | "IPP2P v%s options:\n" | |
18 | " --ipp2p Grab all known p2p packets\n" | |
19 | " --edk [TCP&UDP] All known eDonkey/eMule/Overnet packets\n" | |
20 | " --dc [TCP] All known Direct Connect packets\n" | |
21 | " --kazaa [TCP&UDP] All known KaZaA packets\n" | |
22 | " --gnu [TCP&UDP] All known Gnutella packets\n" | |
23 | " --bit [TCP&UDP] All known BitTorrent packets\n" | |
24 | " --apple [TCP] All known AppleJuice packets\n" | |
25 | " --winmx [TCP] All known WinMX\n" | |
26 | " --soul [TCP] All known SoulSeek\n" | |
27 | " --ares [TCP] All known Ares\n\n" | |
28 | " EXPERIMENTAL protocols (please send feedback to: ipp2p@ipp2p.org) :\n" | |
29 | " --mute [TCP] All known Mute packets\n" | |
30 | " --waste [TCP] All known Waste packets\n" | |
31 | " --xdcc [TCP] All known XDCC packets (only xdcc login)\n\n" | |
32 | " DEBUG SUPPPORT, use only if you know why\n" | |
33 | " --debug Generate kernel debug output, THIS WILL SLOW DOWN THE FILTER\n" | |
34 | "\nNote that the follwing options will have the same meaning:\n" | |
35 | " '--ipp2p' is equal to '--edk --dc --kazaa --gnu --bit --apple --winmx --soul --ares'\n" | |
36 | "\nIPP2P was intended for TCP only. Due to increasing usage of UDP we needed to change this.\n" | |
37 | "You can now use -p udp to search UDP packets only or without -p switch to search UDP and TCP packets.\n" | |
38 | "\nSee README included with this package for more details or visit http://www.ipp2p.org\n" | |
39 | "\nExamples:\n" | |
40 | " iptables -A FORWARD -m ipp2p --ipp2p -j MARK --set-mark 0x01\n" | |
41 | " iptables -A FORWARD -p udp -m ipp2p --kazaa --bit -j DROP\n" | |
42 | " iptables -A FORWARD -p tcp -m ipp2p --edk --soul -j DROP\n\n" | |
43 | , IPP2P_VERSION); | |
44 | } | |
45 | ||
46 | static struct option opts[] = { | |
47 | { "ipp2p", 0, 0, '1' }, | |
48 | { "edk", 0, 0, '2' }, | |
49 | { "dc", 0, 0, '7' }, | |
50 | { "gnu", 0, 0, '9' }, | |
51 | { "kazaa", 0, 0, 'a' }, | |
52 | { "bit", 0, 0, 'b' }, | |
53 | { "apple", 0, 0, 'c' }, | |
54 | { "soul", 0, 0, 'd' }, | |
55 | { "winmx", 0, 0, 'e' }, | |
56 | { "ares", 0, 0, 'f' }, | |
57 | { "mute", 0, 0, 'g' }, | |
58 | { "waste", 0, 0, 'h' }, | |
59 | { "xdcc", 0, 0, 'i' }, | |
60 | { "debug", 0, 0, 'j' }, | |
61 | {0} | |
62 | }; | |
63 | ||
64 | ||
65 | ||
66 | static void | |
67 | init(struct ipt_entry_match *m, unsigned int *nfcache) | |
68 | { | |
69 | struct ipt_p2p_info *info = (struct ipt_p2p_info *)m->data; | |
70 | ||
71 | *nfcache |= NFC_UNKNOWN; | |
72 | ||
73 | /*init the module with default values*/ | |
74 | info->cmd = 0; | |
75 | info->debug = 0; | |
76 | ||
77 | } | |
78 | ||
79 | ||
80 | static int | |
81 | parse(int c, char **argv, int invert, unsigned int *flags, | |
82 | const struct ipt_entry *entry, | |
83 | unsigned int *nfcache, | |
84 | struct ipt_entry_match **match) | |
85 | { | |
86 | struct ipt_p2p_info *info = (struct ipt_p2p_info *)(*match)->data; | |
87 | ||
88 | switch (c) { | |
89 | case '1': /*cmd: ipp2p*/ | |
90 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
91 | exit_error(PARAMETER_PROBLEM, | |
92 | "ipp2p: `--ipp2p' may only be " | |
93 | "specified once!"); | |
94 | /* if ((*flags & SHORT_HAND_DATA) == SHORT_HAND_DATA) | |
95 | exit_error(PARAMETER_PROBLEM, | |
96 | "ipp2p: `--ipp2p-data' may only be " | |
97 | "specified alone!");*/ | |
98 | if ((*flags) != 0) | |
99 | exit_error(PARAMETER_PROBLEM, | |
100 | "ipp2p: `--ipp2p' may only be " | |
101 | "specified alone!"); | |
102 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
103 | *flags += SHORT_HAND_IPP2P; | |
104 | info->cmd = *flags; | |
105 | break; | |
106 | ||
107 | case '2': /*cmd: edk*/ | |
108 | if ((*flags & IPP2P_EDK) == IPP2P_EDK) | |
109 | exit_error(PARAMETER_PROBLEM, | |
110 | "ipp2p: `--edk' may only be " | |
111 | "specified once"); | |
112 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
113 | exit_error(PARAMETER_PROBLEM, | |
114 | "ipp2p: `--ipp2p' may only be " | |
115 | "specified alone!"); | |
116 | /* if ((*flags & SHORT_HAND_DATA) == SHORT_HAND_DATA) | |
117 | exit_error(PARAMETER_PROBLEM, | |
118 | "ipp2p: `--ipp2p-data' may only be " | |
119 | "specified alone!");*/ | |
120 | if ((*flags & IPP2P_DATA_EDK) == IPP2P_DATA_EDK) | |
121 | exit_error(PARAMETER_PROBLEM, | |
122 | "ipp2p: use `--edk' OR `--edk-data' but not both of them!"); | |
123 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
124 | *flags += IPP2P_EDK; | |
125 | info->cmd = *flags; | |
126 | break; | |
127 | ||
128 | ||
129 | case '7': /*cmd: dc*/ | |
130 | if ((*flags & IPP2P_DC) == IPP2P_DC) | |
131 | exit_error(PARAMETER_PROBLEM, | |
132 | "ipp2p: `--dc' may only be " | |
133 | "specified once!"); | |
134 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
135 | exit_error(PARAMETER_PROBLEM, | |
136 | "ipp2p: `--ipp2p' may only be " | |
137 | "specified alone!"); | |
138 | /* if ((*flags & SHORT_HAND_DATA) == SHORT_HAND_DATA) | |
139 | exit_error(PARAMETER_PROBLEM, | |
140 | "ipp2p: `--ipp2p-data' may only be " | |
141 | "specified alone!");*/ | |
142 | if ((*flags & IPP2P_DATA_DC) == IPP2P_DATA_DC) | |
143 | exit_error(PARAMETER_PROBLEM, | |
144 | "ipp2p: use `--dc' OR `--dc-data' but not both of them!"); | |
145 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
146 | *flags += IPP2P_DC; | |
147 | info->cmd = *flags; | |
148 | break; | |
149 | ||
150 | ||
151 | case '9': /*cmd: gnu*/ | |
152 | if ((*flags & IPP2P_GNU) == IPP2P_GNU) | |
153 | exit_error(PARAMETER_PROBLEM, | |
154 | "ipp2p: `--gnu' may only be " | |
155 | "specified once!"); | |
156 | /* if ((*flags & SHORT_HAND_DATA) == SHORT_HAND_DATA) | |
157 | exit_error(PARAMETER_PROBLEM, | |
158 | "ipp2p: `--ipp2p-data' may only be " | |
159 | "specified alone!");*/ | |
160 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
161 | exit_error(PARAMETER_PROBLEM, | |
162 | "ipp2p: `--ipp2p' may only be " | |
163 | "specified alone!"); | |
164 | if ((*flags & IPP2P_DATA_GNU) == IPP2P_DATA_GNU) | |
165 | exit_error(PARAMETER_PROBLEM, | |
166 | "ipp2p: use `--gnu' OR `--gnu-data' but not both of them!"); | |
167 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
168 | *flags += IPP2P_GNU; | |
169 | info->cmd = *flags; | |
170 | break; | |
171 | ||
172 | case 'a': /*cmd: kazaa*/ | |
173 | if ((*flags & IPP2P_KAZAA) == IPP2P_KAZAA) | |
174 | exit_error(PARAMETER_PROBLEM, | |
175 | "ipp2p: `--kazaa' may only be " | |
176 | "specified once!"); | |
177 | /* if ((*flags & SHORT_HAND_DATA) == SHORT_HAND_DATA) | |
178 | exit_error(PARAMETER_PROBLEM, | |
179 | "ipp2p: `--ipp2p-data' may only be " | |
180 | "specified alone!");*/ | |
181 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
182 | exit_error(PARAMETER_PROBLEM, | |
183 | "ipp2p: `--ipp2p' may only be " | |
184 | "specified alone!"); | |
185 | if ((*flags & IPP2P_DATA_KAZAA) == IPP2P_DATA_KAZAA) | |
186 | exit_error(PARAMETER_PROBLEM, | |
187 | "ipp2p: use `--kazaa' OR `--kazaa-data' but not both of them!"); | |
188 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
189 | *flags += IPP2P_KAZAA; | |
190 | info->cmd = *flags; | |
191 | break; | |
192 | ||
193 | case 'b': /*cmd: bit*/ | |
194 | if ((*flags & IPP2P_BIT) == IPP2P_BIT) | |
195 | exit_error(PARAMETER_PROBLEM, | |
196 | "ipp2p: `--bit' may only be " | |
197 | "specified once!"); | |
198 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
199 | exit_error(PARAMETER_PROBLEM, | |
200 | "ipp2p: `--ipp2p' may only be " | |
201 | "specified alone!"); | |
202 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
203 | *flags += IPP2P_BIT; | |
204 | info->cmd = *flags; | |
205 | break; | |
206 | ||
207 | case 'c': /*cmd: apple*/ | |
208 | if ((*flags & IPP2P_APPLE) == IPP2P_APPLE) | |
209 | exit_error(PARAMETER_PROBLEM, | |
210 | "ipp2p: `--apple' may only be " | |
211 | "specified once!"); | |
212 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
213 | exit_error(PARAMETER_PROBLEM, | |
214 | "ipp2p: `--ipp2p' may only be " | |
215 | "specified alone!"); | |
216 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
217 | *flags += IPP2P_APPLE; | |
218 | info->cmd = *flags; | |
219 | break; | |
220 | ||
221 | ||
222 | case 'd': /*cmd: soul*/ | |
223 | if ((*flags & IPP2P_SOUL) == IPP2P_SOUL) | |
224 | exit_error(PARAMETER_PROBLEM, | |
225 | "ipp2p: `--soul' may only be " | |
226 | "specified once!"); | |
227 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
228 | exit_error(PARAMETER_PROBLEM, | |
229 | "ipp2p: `--ipp2p' may only be " | |
230 | "specified alone!"); | |
231 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
232 | *flags += IPP2P_SOUL; | |
233 | info->cmd = *flags; | |
234 | break; | |
235 | ||
236 | ||
237 | case 'e': /*cmd: winmx*/ | |
238 | if ((*flags & IPP2P_WINMX) == IPP2P_WINMX) | |
239 | exit_error(PARAMETER_PROBLEM, | |
240 | "ipp2p: `--winmx' may only be " | |
241 | "specified once!"); | |
242 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
243 | exit_error(PARAMETER_PROBLEM, | |
244 | "ipp2p: `--ipp2p' may only be " | |
245 | "specified alone!"); | |
246 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
247 | *flags += IPP2P_WINMX; | |
248 | info->cmd = *flags; | |
249 | break; | |
250 | ||
251 | case 'f': /*cmd: ares*/ | |
252 | if ((*flags & IPP2P_ARES) == IPP2P_ARES) | |
253 | exit_error(PARAMETER_PROBLEM, | |
254 | "ipp2p: `--ares' may only be " | |
255 | "specified once!"); | |
256 | if ((*flags & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) | |
257 | exit_error(PARAMETER_PROBLEM, | |
258 | "ipp2p: `--ipp2p' may only be " | |
259 | "specified alone!"); | |
260 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
261 | *flags += IPP2P_ARES; | |
262 | info->cmd = *flags; | |
263 | break; | |
264 | ||
265 | case 'g': /*cmd: mute*/ | |
266 | if ((*flags & IPP2P_MUTE) == IPP2P_MUTE) | |
267 | exit_error(PARAMETER_PROBLEM, | |
268 | "ipp2p: `--mute' may only be " | |
269 | "specified once!"); | |
270 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
271 | *flags += IPP2P_MUTE; | |
272 | info->cmd = *flags; | |
273 | break; | |
274 | case 'h': /*cmd: waste*/ | |
275 | if ((*flags & IPP2P_WASTE) == IPP2P_WASTE) | |
276 | exit_error(PARAMETER_PROBLEM, | |
277 | "ipp2p: `--waste' may only be " | |
278 | "specified once!"); | |
279 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
280 | *flags += IPP2P_WASTE; | |
281 | info->cmd = *flags; | |
282 | break; | |
283 | case 'i': /*cmd: xdcc*/ | |
284 | if ((*flags & IPP2P_XDCC) == IPP2P_XDCC) | |
285 | exit_error(PARAMETER_PROBLEM, | |
286 | "ipp2p: `--ares' may only be " | |
287 | "specified once!"); | |
288 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
289 | *flags += IPP2P_XDCC; | |
290 | info->cmd = *flags; | |
291 | break; | |
292 | ||
293 | case 'j': /*cmd: debug*/ | |
294 | if (invert) exit_error(PARAMETER_PROBLEM, "ipp2p: invert [!] is not allowed!"); | |
295 | info->debug = 1; | |
296 | break; | |
297 | ||
298 | default: | |
299 | // exit_error(PARAMETER_PROBLEM, | |
300 | // "\nipp2p-parameter problem: for ipp2p usage type: iptables -m ipp2p --help\n"); | |
301 | return 0; | |
302 | } | |
303 | return 1; | |
304 | } | |
305 | ||
306 | ||
307 | static void | |
308 | final_check(unsigned int flags) | |
309 | { | |
310 | if (!flags) | |
311 | exit_error(PARAMETER_PROBLEM, | |
312 | "\nipp2p-parameter problem: for ipp2p usage type: iptables -m ipp2p --help\n"); | |
313 | } | |
314 | ||
315 | ||
316 | ||
317 | static void | |
318 | print(const struct ipt_ip *ip, | |
319 | const struct ipt_entry_match *match, | |
320 | int numeric) | |
321 | { | |
322 | struct ipt_p2p_info *info = (struct ipt_p2p_info *)match->data; | |
323 | ||
324 | printf("ipp2p v%s", IPP2P_VERSION); | |
325 | if ((info->cmd & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) printf(" --ipp2p"); | |
326 | // if ((info->cmd & SHORT_HAND_DATA) == SHORT_HAND_DATA) printf(" --ipp2p-data"); | |
327 | if ((info->cmd & IPP2P_KAZAA) == IPP2P_KAZAA) printf(" --kazaa"); | |
328 | // if ((info->cmd & IPP2P_DATA_KAZAA) == IPP2P_DATA_KAZAA) printf(" --kazaa-data"); | |
329 | // if ((info->cmd & IPP2P_DATA_GNU) == IPP2P_DATA_GNU) printf(" --gnu-data"); | |
330 | if ((info->cmd & IPP2P_GNU) == IPP2P_GNU) printf(" --gnu"); | |
331 | if ((info->cmd & IPP2P_EDK) == IPP2P_EDK) printf(" --edk"); | |
332 | // if ((info->cmd & IPP2P_DATA_EDK) == IPP2P_DATA_EDK) printf(" --edk-data"); | |
333 | // if ((info->cmd & IPP2P_DATA_DC) == IPP2P_DATA_DC) printf(" --dc-data"); | |
334 | if ((info->cmd & IPP2P_DC) == IPP2P_DC) printf(" --dc"); | |
335 | if ((info->cmd & IPP2P_BIT) == IPP2P_BIT) printf(" --bit"); | |
336 | if ((info->cmd & IPP2P_APPLE) == IPP2P_APPLE) printf(" --apple"); | |
337 | if ((info->cmd & IPP2P_SOUL) == IPP2P_SOUL) printf(" --soul"); | |
338 | if ((info->cmd & IPP2P_WINMX) == IPP2P_WINMX) printf(" --winmx"); | |
339 | if ((info->cmd & IPP2P_ARES) == IPP2P_ARES) printf(" --ares"); | |
340 | if ((info->cmd & IPP2P_MUTE) == IPP2P_MUTE) printf(" --mute"); | |
341 | if ((info->cmd & IPP2P_WASTE) == IPP2P_WASTE) printf(" --waste"); | |
342 | if ((info->cmd & IPP2P_XDCC) == IPP2P_XDCC) printf(" --xdcc"); | |
343 | if (info->debug != 0) printf(" --debug"); | |
344 | printf(" "); | |
345 | } | |
346 | ||
347 | ||
348 | ||
349 | static void | |
350 | save(const struct ipt_ip *ip, const struct ipt_entry_match *match) | |
351 | { | |
352 | struct ipt_p2p_info *info = (struct ipt_p2p_info *)match->data; | |
353 | ||
354 | if ((info->cmd & SHORT_HAND_IPP2P) == SHORT_HAND_IPP2P) printf("--ipp2p "); | |
355 | // if ((info->cmd & SHORT_HAND_DATA) == SHORT_HAND_DATA) printf("--ipp2p-data "); | |
356 | if ((info->cmd & IPP2P_KAZAA) == IPP2P_KAZAA) printf("--kazaa "); | |
357 | // if ((info->cmd & IPP2P_DATA_KAZAA) == IPP2P_DATA_KAZAA) printf("--kazaa-data "); | |
358 | // if ((info->cmd & IPP2P_DATA_GNU) == IPP2P_DATA_GNU) printf("--gnu-data "); | |
359 | if ((info->cmd & IPP2P_GNU) == IPP2P_GNU) printf("--gnu "); | |
360 | if ((info->cmd & IPP2P_EDK) == IPP2P_EDK) printf("--edk "); | |
361 | // if ((info->cmd & IPP2P_DATA_EDK) == IPP2P_DATA_EDK) printf("--edk-data "); | |
362 | // if ((info->cmd & IPP2P_DATA_DC) == IPP2P_DATA_DC) printf("--dc-data "); | |
363 | if ((info->cmd & IPP2P_DC) == IPP2P_DC) printf("--dc "); | |
364 | if ((info->cmd & IPP2P_BIT) == IPP2P_BIT) printf("--bit "); | |
365 | if ((info->cmd & IPP2P_APPLE) == IPP2P_APPLE) printf("--apple "); | |
366 | if ((info->cmd & IPP2P_SOUL) == IPP2P_SOUL) printf("--soul "); | |
367 | if ((info->cmd & IPP2P_WINMX) == IPP2P_WINMX) printf("--winmx "); | |
368 | if ((info->cmd & IPP2P_ARES) == IPP2P_ARES) printf("--ares "); | |
369 | if ((info->cmd & IPP2P_MUTE) == IPP2P_MUTE) printf(" --mute"); | |
370 | if ((info->cmd & IPP2P_WASTE) == IPP2P_WASTE) printf(" --waste"); | |
371 | if ((info->cmd & IPP2P_XDCC) == IPP2P_XDCC) printf(" --xdcc"); | |
372 | if (info->debug != 0) printf("--debug "); | |
373 | } | |
374 | ||
375 | ||
376 | ||
377 | ||
378 | static | |
379 | struct iptables_match ipp2p= | |
380 | { | |
381 | .next = NULL, | |
382 | .name = "ipp2p", | |
383 | .version = IPTABLES_VERSION, | |
384 | .size = IPT_ALIGN(sizeof(struct ipt_p2p_info)), | |
385 | .userspacesize = IPT_ALIGN(sizeof(struct ipt_p2p_info)), | |
386 | .help = &help, | |
387 | .init = &init, | |
388 | .parse = &parse, | |
389 | .final_check = &final_check, | |
390 | .print = &print, | |
391 | .save = &save, | |
392 | .extra_opts = opts | |
393 | }; | |
394 | ||
395 | ||
396 | ||
397 | void _init(void) | |
398 | { | |
399 | register_match(&ipp2p); | |
400 | } | |
401 |