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Commit | Line | Data |
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9de3ca7e | 1 | /* |
2 | * aim_login.c | |
3 | * | |
4 | * This contains all the functions needed to actually login. | |
5 | * | |
6 | */ | |
7 | ||
37ee990e | 8 | #define FAIM_INTERNAL |
dd60ff8b | 9 | #include <aim.h> |
9de3ca7e | 10 | |
b5bc2a8c | 11 | #include "md5.h" |
12 | ||
5daacaa3 | 13 | static int aim_encode_password(const char *password, unsigned char *encoded); |
9de3ca7e | 14 | |
78b3fb13 | 15 | faim_export int aim_sendconnack(struct aim_session_t *sess, |
16 | struct aim_conn_t *conn) | |
01b59e1e | 17 | { |
18 | int curbyte=0; | |
19 | ||
5b79dc93 | 20 | struct command_tx_struct *newpacket; |
01b59e1e | 21 | |
646c6b52 | 22 | if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0001, 4))) |
01b59e1e | 23 | return -1; |
24 | ||
5b79dc93 | 25 | newpacket->lock = 1; |
01b59e1e | 26 | |
5b79dc93 | 27 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000); |
28 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
01b59e1e | 29 | |
5b79dc93 | 30 | newpacket->lock = 0; |
31 | return aim_tx_enqueue(sess, newpacket); | |
01b59e1e | 32 | } |
33 | ||
01b59e1e | 34 | /* |
35 | * In AIM 3.5 protocol, the first stage of login is to request | |
36 | * login from the Authorizer, passing it the screen name | |
37 | * for verification. If the name is invalid, a 0017/0003 | |
38 | * is spit back, with the standard error contents. If valid, | |
39 | * a 0017/0007 comes back, which is the signal to send | |
40 | * it the main login command (0017/0002). | |
41 | */ | |
78b3fb13 | 42 | faim_export int aim_request_login(struct aim_session_t *sess, |
43 | struct aim_conn_t *conn, | |
44 | char *sn) | |
01b59e1e | 45 | { |
5daacaa3 | 46 | int curbyte; |
5b79dc93 | 47 | struct command_tx_struct *newpacket; |
01b59e1e | 48 | |
5daacaa3 | 49 | if (!sess || !conn || !sn) |
50 | return -1; | |
51 | ||
52 | /* | |
53 | * For ICQ, we enable the ancient horrible login and stuff | |
54 | * a key packet into the queue to make it look like we got | |
55 | * a reply back. This is so the client doesn't know we're | |
56 | * really not doing MD5 login. | |
57 | * | |
58 | * This may sound stupid, but I'm not in the best of moods and | |
59 | * I don't plan to keep support for this crap around much longer. | |
60 | * Its all AOL's fault anyway, really. I hate AOL. Really. They | |
61 | * always seem to be able to piss me off by doing the dumbest little | |
62 | * things. Like disabling MD5 logins for ICQ UINs, or adding purposefully | |
63 | * wrong TLV lengths, or adding superfluous information to host strings, | |
64 | * or... I'll stop. | |
65 | * | |
66 | */ | |
67 | if ((sn[0] >= '0') && (sn[0] <= '9')) { | |
68 | struct command_rx_struct *newrx; | |
69 | int i; | |
70 | ||
71 | if (!(newrx = (struct command_rx_struct *)malloc(sizeof(struct command_rx_struct)))) | |
72 | return -1; | |
73 | memset(newrx, 0x00, sizeof(struct command_rx_struct)); | |
74 | newrx->lock = 1; | |
75 | newrx->hdrtype = AIM_FRAMETYPE_OSCAR; | |
76 | newrx->hdr.oscar.type = 0x02; | |
77 | newrx->hdr.oscar.seqnum = 0; | |
78 | newrx->commandlen = 10+2+1; | |
79 | newrx->nofree = 0; | |
80 | if (!(newrx->data = malloc(newrx->commandlen))) { | |
81 | free(newrx); | |
82 | return -1; | |
83 | } | |
84 | ||
85 | i = aim_putsnac(newrx->data, 0x0017, 0x0007, 0x0000, 0x0000); | |
86 | i += aimutil_put16(newrx->data+i, 0x01); | |
87 | i += aimutil_putstr(newrx->data+i, "0", 1); | |
88 | ||
89 | newrx->conn = conn; | |
90 | ||
91 | newrx->next = sess->queue_incoming; | |
92 | sess->queue_incoming = newrx; | |
93 | ||
94 | newrx->lock = 0; | |
95 | ||
22517493 | 96 | sess->flags &= ~AIM_SESS_FLAGS_SNACLOGIN; |
97 | ||
5daacaa3 | 98 | return 0; |
99 | } | |
100 | ||
22517493 | 101 | sess->flags |= AIM_SESS_FLAGS_SNACLOGIN; |
5daacaa3 | 102 | |
103 | aim_sendconnack(sess, conn); | |
104 | ||
646c6b52 | 105 | if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+2+2+strlen(sn)))) |
5b79dc93 | 106 | return -1; |
01b59e1e | 107 | |
5b79dc93 | 108 | newpacket->lock = 1; |
01b59e1e | 109 | |
5daacaa3 | 110 | curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0006, 0x0000, 0x00010000); |
5b79dc93 | 111 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); |
01b59e1e | 112 | |
5daacaa3 | 113 | newpacket->commandlen = curbyte; |
5b79dc93 | 114 | newpacket->lock = 0; |
5daacaa3 | 115 | |
5b79dc93 | 116 | return aim_tx_enqueue(sess, newpacket); |
01b59e1e | 117 | } |
01b59e1e | 118 | |
9de3ca7e | 119 | /* |
24286d93 | 120 | * send_login(int socket, char *sn, char *password) |
9de3ca7e | 121 | * |
122 | * This is the initial login request packet. | |
123 | * | |
b1eac25a | 124 | * NOTE!! If you want/need to make use of the aim_sendmemblock() function, |
125 | * then the client information you send here must exactly match the | |
126 | * executable that you're pulling the data from. | |
9de3ca7e | 127 | * |
355982c5 | 128 | * Latest WinAIM: |
129 | * clientstring = "AOL Instant Messenger (SM), version 4.3.2188/WIN32" | |
130 | * major2 = 0x0109 | |
131 | * major = 0x0400 | |
132 | * minor = 0x0003 | |
133 | * minor2 = 0x0000 | |
134 | * build = 0x088c | |
135 | * unknown = 0x00000086 | |
136 | * lang = "en" | |
137 | * country = "us" | |
138 | * unknown4a = 0x01 | |
154b4093 | 139 | * |
140 | * Latest WinAIM that libfaim can emulate without server-side buddylists: | |
b1eac25a | 141 | * clientstring = "AOL Instant Messenger (SM), version 4.1.2010/WIN32" |
142 | * major2 = 0x0004 | |
143 | * major = 0x0004 | |
144 | * minor = 0x0001 | |
145 | * minor2 = 0x0000 | |
146 | * build = 0x07da | |
147 | * unknown= 0x0000004b | |
148 | * | |
149 | * WinAIM 3.5.1670: | |
154b4093 | 150 | * clientstring = "AOL Instant Messenger (SM), version 3.5.1670/WIN32" |
151 | * major2 = 0x0004 | |
152 | * major = 0x0003 | |
153 | * minor = 0x0005 | |
154 | * minor2 = 0x0000 | |
155 | * build = 0x0686 | |
156 | * unknown =0x0000002a | |
157 | * | |
d32954e7 | 158 | * Java AIM 1.1.19: |
159 | * clientstring = "AOL Instant Messenger (TM) version 1.1.19 for Java built 03/24/98, freeMem 215871 totalMem 1048567, i686, Linus, #2 SMP Sun Feb 11 03:41:17 UTC 2001 2.4.1-ac9, IBM Corporation, 1.1.8, 45.3, Tue Mar 27 12:09:17 PST 2001" | |
160 | * major2 = 0x0001 | |
161 | * major = 0x0001 | |
162 | * minor = 0x0001 | |
163 | * minor2 = (not sent) | |
164 | * build = 0x0013 | |
165 | * unknown= (not sent) | |
166 | * | |
167 | * AIM for Linux 1.1.112: | |
168 | * clientstring = "AOL Instant Messenger (SM)" | |
169 | * major2 = 0x1d09 | |
170 | * major = 0x0001 | |
171 | * minor = 0x0001 | |
172 | * minor2 = 0x0001 | |
173 | * build = 0x0070 | |
174 | * unknown= 0x0000008b | |
175 | * serverstore = 0x01 | |
176 | * | |
9de3ca7e | 177 | */ |
78b3fb13 | 178 | faim_export int aim_send_login (struct aim_session_t *sess, |
179 | struct aim_conn_t *conn, | |
180 | char *sn, char *password, | |
181 | struct client_info_s *clientinfo, | |
182 | char *key) | |
9de3ca7e | 183 | { |
9de3ca7e | 184 | int curbyte=0; |
5b79dc93 | 185 | struct command_tx_struct *newpacket; |
9de3ca7e | 186 | |
01b59e1e | 187 | if (!clientinfo || !sn || !password) |
188 | return -1; | |
189 | ||
646c6b52 | 190 | if (!(newpacket = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 1152))) |
5b79dc93 | 191 | return -1; |
9de3ca7e | 192 | |
5b79dc93 | 193 | newpacket->lock = 1; |
01b59e1e | 194 | |
22517493 | 195 | newpacket->hdr.oscar.type = (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)?0x02:0x01; |
b5bc2a8c | 196 | |
22517493 | 197 | if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) |
5daacaa3 | 198 | curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0002, 0x0000, 0x00010000); |
199 | else { | |
200 | curbyte = aimutil_put16(newpacket->data, 0x0000); | |
201 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
202 | } | |
b5bc2a8c | 203 | |
5daacaa3 | 204 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); |
9de3ca7e | 205 | |
22517493 | 206 | if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) { |
9f1a4013 | 207 | unsigned char digest[16]; |
5daacaa3 | 208 | |
209 | aim_encode_password_md5(password, key, digest); | |
210 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, (char *)digest); | |
211 | } else { | |
212 | char *password_encoded; | |
213 | ||
214 | password_encoded = (char *) malloc(strlen(password)); | |
215 | aim_encode_password(password, password_encoded); | |
216 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0002, strlen(password), password_encoded); | |
217 | free(password_encoded); | |
218 | } | |
219 | ||
e80a0fa9 | 220 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring); |
13ebc4c4 | 221 | |
22517493 | 222 | if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) { |
154b4093 | 223 | |
5daacaa3 | 224 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, (unsigned short)clientinfo->major2); |
225 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, (unsigned short)clientinfo->major); | |
226 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, (unsigned short)clientinfo->minor); | |
227 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, (unsigned short)clientinfo->minor2); | |
228 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, (unsigned short)clientinfo->build); | |
b5bc2a8c | 229 | |
5daacaa3 | 230 | } else { |
355982c5 | 231 | /* Use very specific version numbers, to further indicate the hack. */ |
5daacaa3 | 232 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, 0x010a); |
233 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, 0x0004); | |
234 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, 0x003c); | |
235 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0001); | |
236 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, 0x0cce); | |
237 | curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x00000055); | |
238 | } | |
9de3ca7e | 239 | |
e80a0fa9 | 240 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country); |
241 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang); | |
13ebc4c4 | 242 | |
e80a0fa9 | 243 | if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) { |
244 | curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown); | |
245 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015); | |
246 | } | |
247 | ||
13ebc4c4 | 248 | newpacket->commandlen = curbyte; |
9de3ca7e | 249 | |
5b79dc93 | 250 | newpacket->lock = 0; |
251 | return aim_tx_enqueue(sess, newpacket); | |
9de3ca7e | 252 | } |
9de3ca7e | 253 | |
9f1a4013 | 254 | faim_export int aim_encode_password_md5(const char *password, const char *key, unsigned char *digest) |
b5bc2a8c | 255 | { |
256 | md5_state_t state; | |
257 | ||
258 | md5_init(&state); | |
259 | md5_append(&state, (const md5_byte_t *)key, strlen(key)); | |
260 | md5_append(&state, (const md5_byte_t *)password, strlen(password)); | |
261 | md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING)); | |
262 | md5_finish(&state, (md5_byte_t *)digest); | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
5daacaa3 | 267 | /** |
268 | * aim_encode_password - Encode a password using old XOR method | |
269 | * @password: incoming password | |
270 | * @encoded: buffer to put encoded password | |
9de3ca7e | 271 | * |
272 | * This takes a const pointer to a (null terminated) string | |
273 | * containing the unencoded password. It also gets passed | |
274 | * an already allocated buffer to store the encoded password. | |
275 | * This buffer should be the exact length of the password without | |
5daacaa3 | 276 | * the null. The encoded password buffer /is not %NULL terminated/. |
9de3ca7e | 277 | * |
278 | * The encoding_table seems to be a fixed set of values. We'll | |
279 | * hope it doesn't change over time! | |
280 | * | |
5daacaa3 | 281 | * This is only used for the XOR method, not the better MD5 method. |
b5bc2a8c | 282 | * |
9de3ca7e | 283 | */ |
b5bc2a8c | 284 | static int aim_encode_password(const char *password, unsigned char *encoded) |
9de3ca7e | 285 | { |
286 | u_char encoding_table[] = { | |
b69540e3 | 287 | #if 0 /* old v1 table */ |
9de3ca7e | 288 | 0xf3, 0xb3, 0x6c, 0x99, |
289 | 0x95, 0x3f, 0xac, 0xb6, | |
290 | 0xc5, 0xfa, 0x6b, 0x63, | |
291 | 0x69, 0x6c, 0xc3, 0x9f | |
b69540e3 | 292 | #else /* v2.1 table, also works for ICQ */ |
5e02cf44 | 293 | 0xf3, 0x26, 0x81, 0xc4, |
b69540e3 | 294 | 0x39, 0x86, 0xdb, 0x92, |
295 | 0x71, 0xa3, 0xb9, 0xe6, | |
296 | 0x53, 0x7a, 0x95, 0x7c | |
297 | #endif | |
5e02cf44 | 298 | }; |
299 | ||
300 | int i; | |
b69540e3 | 301 | |
5e02cf44 | 302 | for (i = 0; i < strlen(password); i++) |
303 | encoded[i] = (password[i] ^ encoding_table[i]); | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
e6b05d80 | 308 | /* |
309 | * Generate an authorization response. | |
310 | * | |
311 | * You probably don't want this unless you're writing an AIM server. | |
312 | * | |
313 | */ | |
78b3fb13 | 314 | faim_export unsigned long aim_sendauthresp(struct aim_session_t *sess, |
315 | struct aim_conn_t *conn, | |
355982c5 | 316 | char *sn, int errorcode, |
317 | char *errorurl, char *bosip, | |
78b3fb13 | 318 | char *cookie, char *email, |
319 | int regstatus) | |
e6b05d80 | 320 | { |
5b79dc93 | 321 | struct command_tx_struct *tx; |
e6b05d80 | 322 | struct aim_tlvlist_t *tlvlist = NULL; |
323 | ||
646c6b52 | 324 | if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0004, 1152))) |
5b79dc93 | 325 | return -1; |
e6b05d80 | 326 | |
5b79dc93 | 327 | tx->lock = 1; |
e6b05d80 | 328 | |
329 | if (sn) | |
330 | aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn)); | |
331 | else | |
355982c5 | 332 | aim_addtlvtochain_str(&tlvlist, 0x0001, sess->sn, strlen(sess->sn)); |
e6b05d80 | 333 | |
355982c5 | 334 | if (errorcode) { |
335 | aim_addtlvtochain16(&tlvlist, 0x0008, errorcode); | |
336 | aim_addtlvtochain_str(&tlvlist, 0x0004, errorurl, strlen(errorurl)); | |
e6b05d80 | 337 | } else { |
338 | aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip)); | |
339 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
340 | aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email)); | |
5ac21963 | 341 | aim_addtlvtochain16(&tlvlist, 0x0013, (unsigned short)regstatus); |
e6b05d80 | 342 | } |
343 | ||
5b79dc93 | 344 | tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist); |
345 | tx->lock = 0; | |
355982c5 | 346 | |
5b79dc93 | 347 | return aim_tx_enqueue(sess, tx); |
e6b05d80 | 348 | } |
349 | ||
350 | /* | |
351 | * Generate a random cookie. (Non-client use only) | |
352 | */ | |
78b3fb13 | 353 | faim_export int aim_gencookie(unsigned char *buf) |
e6b05d80 | 354 | { |
355 | int i; | |
356 | ||
357 | srand(time(NULL)); | |
358 | ||
359 | for (i=0; i < AIM_COOKIELEN; i++) | |
360 | buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0)); | |
361 | ||
362 | return i; | |
363 | } | |
364 | ||
365 | /* | |
366 | * Send Server Ready. (Non-client) | |
367 | */ | |
78b3fb13 | 368 | faim_export int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn) |
e6b05d80 | 369 | { |
5b79dc93 | 370 | struct command_tx_struct *tx; |
e6b05d80 | 371 | int i = 0; |
372 | ||
646c6b52 | 373 | if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+0x22))) |
5b79dc93 | 374 | return -1; |
e6b05d80 | 375 | |
5b79dc93 | 376 | tx->lock = 1; |
e6b05d80 | 377 | |
67c0bb2f | 378 | i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++); |
5b79dc93 | 379 | |
380 | i += aimutil_put16(tx->data+i, 0x0001); | |
381 | i += aimutil_put16(tx->data+i, 0x0002); | |
382 | i += aimutil_put16(tx->data+i, 0x0003); | |
383 | i += aimutil_put16(tx->data+i, 0x0004); | |
384 | i += aimutil_put16(tx->data+i, 0x0006); | |
385 | i += aimutil_put16(tx->data+i, 0x0008); | |
386 | i += aimutil_put16(tx->data+i, 0x0009); | |
387 | i += aimutil_put16(tx->data+i, 0x000a); | |
388 | i += aimutil_put16(tx->data+i, 0x000b); | |
389 | i += aimutil_put16(tx->data+i, 0x000c); | |
67c0bb2f | 390 | i += aimutil_put16(tx->data+i, 0x0013); |
391 | i += aimutil_put16(tx->data+i, 0x0015); | |
5b79dc93 | 392 | |
67c0bb2f | 393 | tx->commandlen = i; |
5b79dc93 | 394 | tx->lock = 0; |
5b79dc93 | 395 | return aim_tx_enqueue(sess, tx); |
e6b05d80 | 396 | } |
397 | ||
398 | ||
399 | /* | |
400 | * Send service redirect. (Non-Client) | |
401 | */ | |
78b3fb13 | 402 | faim_export unsigned long aim_sendredirect(struct aim_session_t *sess, |
403 | struct aim_conn_t *conn, | |
404 | unsigned short servid, | |
405 | char *ip, | |
406 | char *cookie) | |
e6b05d80 | 407 | { |
5b79dc93 | 408 | struct command_tx_struct *tx; |
e6b05d80 | 409 | struct aim_tlvlist_t *tlvlist = NULL; |
410 | int i = 0; | |
411 | ||
646c6b52 | 412 | if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 1152))) |
5b79dc93 | 413 | return -1; |
414 | ||
415 | tx->lock = 1; | |
e6b05d80 | 416 | |
13ebc4c4 | 417 | i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000); |
e6b05d80 | 418 | |
419 | aim_addtlvtochain16(&tlvlist, 0x000d, servid); | |
420 | aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip)); | |
421 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
422 | ||
5b79dc93 | 423 | tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i; |
e6b05d80 | 424 | aim_freetlvchain(&tlvlist); |
425 | ||
5b79dc93 | 426 | tx->lock = 0; |
427 | return aim_tx_enqueue(sess, tx); | |
e6b05d80 | 428 | } |
00ef5271 | 429 | |
430 | ||
431 | static int hostonline(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
432 | { | |
e677fc43 | 433 | aim_rxcallback_t userfunc; |
00ef5271 | 434 | int ret = 0; |
435 | unsigned short *families; | |
436 | int famcount, i; | |
437 | ||
438 | famcount = datalen/2; | |
439 | ||
440 | if (!(families = malloc(datalen))) | |
441 | return 0; | |
442 | ||
443 | for (i = 0; i < famcount; i++) | |
444 | families[i] = aimutil_get16(data+(i*2)); | |
445 | ||
446 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
447 | ret = userfunc(sess, rx, famcount, families); | |
448 | ||
449 | free(families); | |
450 | ||
451 | return ret; | |
452 | } | |
453 | ||
454 | static int redirect(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
455 | { | |
456 | int serviceid; | |
457 | unsigned char *cookie; | |
458 | char *ip; | |
e677fc43 | 459 | aim_rxcallback_t userfunc; |
00ef5271 | 460 | struct aim_tlvlist_t *tlvlist; |
461 | char *chathack = NULL; | |
462 | int chathackex = 0; | |
463 | int ret = 0; | |
464 | ||
465 | tlvlist = aim_readtlvchain(data, datalen); | |
466 | ||
467 | if (!aim_gettlv(tlvlist, 0x000d, 1) || | |
468 | !aim_gettlv(tlvlist, 0x0005, 1) || | |
469 | !aim_gettlv(tlvlist, 0x0006, 1)) { | |
470 | aim_freetlvchain(&tlvlist); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | serviceid = aim_gettlv16(tlvlist, 0x000d, 1); | |
475 | ip = aim_gettlv_str(tlvlist, 0x0005, 1); | |
476 | cookie = aim_gettlv_str(tlvlist, 0x0006, 1); | |
477 | ||
478 | /* | |
479 | * Chat hack. | |
480 | * | |
481 | */ | |
482 | if ((serviceid == AIM_CONN_TYPE_CHAT) && sess->pendingjoin) { | |
483 | chathack = sess->pendingjoin; | |
484 | chathackex = sess->pendingjoinexchange; | |
485 | sess->pendingjoin = NULL; | |
486 | sess->pendingjoinexchange = 0; | |
487 | } | |
488 | ||
489 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
490 | ret = userfunc(sess, rx, serviceid, ip, cookie, chathack, chathackex); | |
491 | ||
492 | free(ip); | |
493 | free(cookie); | |
494 | free(chathack); | |
495 | ||
496 | aim_freetlvchain(&tlvlist); | |
497 | ||
498 | return ret; | |
499 | } | |
500 | ||
501 | /* | |
502 | * The Rate Limiting System, An Abridged Guide to Nonsense. | |
503 | * | |
504 | * OSCAR defines several 'rate classes'. Each class has seperate | |
505 | * rate limiting properties (limit level, alert level, disconnect | |
506 | * level, etc), and a set of SNAC family/type pairs associated with | |
507 | * it. The rate classes, their limiting properties, and the definitions | |
508 | * of which SNACs are belong to which class, are defined in the | |
509 | * Rate Response packet at login to each host. | |
510 | * | |
511 | * Logically, all rate offenses within one class count against further | |
512 | * offenses for other SNACs in the same class (ie, sending messages | |
513 | * too fast will limit the number of user info requests you can send, | |
514 | * since those two SNACs are in the same rate class). | |
515 | * | |
516 | * Since the rate classes are defined dynamically at login, the values | |
517 | * below may change. But they seem to be fairly constant. | |
518 | * | |
519 | * Currently, BOS defines five rate classes, with the commonly used | |
520 | * members as follows... | |
521 | * | |
522 | * Rate class 0x0001: | |
523 | * - Everything thats not in any of the other classes | |
524 | * | |
525 | * Rate class 0x0002: | |
526 | * - Buddy list add/remove | |
527 | * - Permit list add/remove | |
528 | * - Deny list add/remove | |
529 | * | |
530 | * Rate class 0x0003: | |
531 | * - User information requests | |
532 | * - Outgoing ICBMs | |
533 | * | |
534 | * Rate class 0x0004: | |
535 | * - A few unknowns: 2/9, 2/b, and f/2 | |
536 | * | |
537 | * Rate class 0x0005: | |
538 | * - Chat room create | |
539 | * - Outgoing chat ICBMs | |
540 | * | |
541 | * The only other thing of note is that class 5 (chat) has slightly looser | |
542 | * limiting properties than class 3 (normal messages). But thats just a | |
543 | * small bit of trivia for you. | |
544 | * | |
545 | * The last thing that needs to be learned about the rate limiting | |
546 | * system is how the actual numbers relate to the passing of time. This | |
547 | * seems to be a big mystery. | |
548 | * | |
549 | */ | |
550 | ||
551 | /* XXX parse this */ | |
552 | static int rateresp(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
553 | { | |
e677fc43 | 554 | aim_rxcallback_t userfunc; |
00ef5271 | 555 | |
556 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
557 | return userfunc(sess, rx); | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | static int ratechange(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
563 | { | |
e677fc43 | 564 | aim_rxcallback_t userfunc; |
00ef5271 | 565 | int i = 0, code; |
566 | unsigned long currentavg, maxavg; | |
567 | unsigned long rateclass, windowsize, clear, alert, limit, disconnect; | |
568 | ||
569 | code = aimutil_get16(data+i); | |
570 | i += 2; | |
571 | ||
572 | rateclass = aimutil_get16(data+i); | |
573 | i += 2; | |
574 | ||
575 | windowsize = aimutil_get32(data+i); | |
576 | i += 4; | |
577 | clear = aimutil_get32(data+i); | |
578 | i += 4; | |
579 | alert = aimutil_get32(data+i); | |
580 | i += 4; | |
581 | limit = aimutil_get32(data+i); | |
582 | i += 4; | |
583 | disconnect = aimutil_get32(data+i); | |
584 | i += 4; | |
585 | currentavg = aimutil_get32(data+i); | |
586 | i += 4; | |
587 | maxavg = aimutil_get32(data+i); | |
588 | i += 4; | |
589 | ||
590 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
591 | return userfunc(sess, rx, code, rateclass, windowsize, clear, alert, limit, disconnect, currentavg, maxavg); | |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
596 | /* XXX parse this */ | |
597 | static int selfinfo(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
598 | { | |
e677fc43 | 599 | aim_rxcallback_t userfunc; |
00ef5271 | 600 | |
601 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
602 | return userfunc(sess, rx); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int evilnotify(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
608 | { | |
e677fc43 | 609 | aim_rxcallback_t userfunc = NULL; |
00ef5271 | 610 | int i = 0; |
611 | unsigned short newevil; | |
612 | struct aim_userinfo_s userinfo; | |
613 | ||
614 | newevil = aimutil_get16(data); | |
615 | i += 2; | |
616 | ||
617 | memset(&userinfo, 0, sizeof(struct aim_userinfo_s)); | |
618 | ||
619 | if (datalen-i) | |
620 | i += aim_extractuserinfo(sess, data+i, &userinfo); | |
621 | ||
622 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
623 | return userfunc(sess, rx, newevil, &userinfo); | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static int motd(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
629 | { | |
e677fc43 | 630 | aim_rxcallback_t userfunc; |
00ef5271 | 631 | char *msg = NULL; |
632 | int ret = 0; | |
633 | struct aim_tlvlist_t *tlvlist; | |
634 | unsigned short id; | |
635 | ||
636 | /* | |
637 | * Code. | |
638 | * | |
639 | * Valid values: | |
640 | * 1 Mandatory upgrade | |
641 | * 2 Advisory upgrade | |
642 | * 3 System bulletin | |
643 | * 4 Nothing's wrong ("top o the world" -- normal) | |
644 | * | |
645 | */ | |
646 | id = aimutil_get16(data); | |
647 | ||
648 | /* | |
649 | * TLVs follow | |
650 | */ | |
651 | if ((tlvlist = aim_readtlvchain(data+2, datalen-2))) | |
652 | msg = aim_gettlv_str(tlvlist, 0x000b, 1); | |
653 | ||
654 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
655 | ret = userfunc(sess, rx, id, msg); | |
656 | ||
657 | free(msg); | |
658 | ||
659 | aim_freetlvchain(&tlvlist); | |
660 | ||
661 | return ret; | |
662 | } | |
663 | ||
664 | static int hostversions(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
665 | { | |
e677fc43 | 666 | aim_rxcallback_t userfunc; |
00ef5271 | 667 | int vercount; |
668 | ||
669 | vercount = datalen/4; | |
670 | ||
671 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
672 | return userfunc(sess, rx, vercount, data); | |
673 | ||
674 | return 0; | |
675 | } | |
b1eac25a | 676 | |
d32954e7 | 677 | /* |
b1eac25a | 678 | * Starting this past week (26 Mar 2001, say), AOL has started sending |
679 | * this nice little extra SNAC. AFAIK, it has never been used until now. | |
680 | * | |
681 | * The request contains eight bytes. The first four are an offset, the | |
682 | * second four are a length. | |
d32954e7 | 683 | * |
b1eac25a | 684 | * The offset is an offset into aim.exe when it is mapped during execution |
685 | * on Win32. So far, AOL has only been requesting bytes in static regions | |
686 | * of memory. (I won't put it past them to start requesting data in | |
687 | * less static regions -- regions that are initialized at run time, but still | |
688 | * before the client recieves this request.) | |
689 | * | |
690 | * When the client recieves the request, it adds it to the current ds | |
691 | * (0x00400000) and dereferences it, copying the data into a buffer which | |
692 | * it then runs directly through the MD5 hasher. The 16 byte output of | |
693 | * the hash is then sent back to the server. | |
694 | * | |
695 | * If the client does not send any data back, or the data does not match | |
696 | * the data that the specific client should have, the client will get the | |
697 | * following message from "AOL Instant Messenger": | |
698 | * "You have been disconnected from the AOL Instant Message Service (SM) | |
699 | * for accessing the AOL network using unauthorized software. You can | |
700 | * download a FREE, fully featured, and authorized client, here | |
701 | * http://www.aol.com/aim/download2.html" | |
702 | * The connection is then closed, recieving disconnect code 1, URL | |
703 | * http://www.aim.aol.com/errors/USER_LOGGED_OFF_NEW_LOGIN.html. | |
704 | * | |
705 | * Note, however, that numerous inconsistencies can cause the above error, | |
706 | * not just sending back a bad hash. Do not immediatly suspect this code | |
707 | * if you get disconnected. AOL and the open/free software community have | |
708 | * played this game for a couple years now, generating the above message | |
709 | * on numerous ocassions. | |
710 | * | |
711 | * Anyway, neener. We win again. | |
d32954e7 | 712 | * |
713 | */ | |
714 | static int memrequest(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
715 | { | |
e677fc43 | 716 | aim_rxcallback_t userfunc; |
b1eac25a | 717 | unsigned long offset, len; |
5ac961d5 | 718 | int i = 0; |
719 | struct aim_tlvlist_t *list; | |
720 | char *modname = NULL; | |
b1eac25a | 721 | |
722 | offset = aimutil_get32(data); | |
5ac961d5 | 723 | i += 4; |
724 | ||
b1eac25a | 725 | len = aimutil_get32(data+4); |
5ac961d5 | 726 | i += 4; |
b1eac25a | 727 | |
5ac961d5 | 728 | list = aim_readtlvchain(data+i, datalen-i); |
328837f7 | 729 | |
5ac961d5 | 730 | if (aim_gettlv(list, 0x0001, 1)) |
731 | modname = aim_gettlv_str(list, 0x0001, 1); | |
732 | ||
733 | faimdprintf(sess, 1, "data at 0x%08lx (%d bytes) of requested\n", offset, len, modname?modname:"aim.exe"); | |
b1eac25a | 734 | |
735 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) | |
328837f7 | 736 | return userfunc(sess, rx, offset, len, modname); |
b1eac25a | 737 | |
5ac961d5 | 738 | free(modname); |
739 | aim_freetlvchain(&list); | |
740 | ||
b1eac25a | 741 | return 0; |
742 | } | |
743 | ||
001c9b80 | 744 | static void dumpbox(struct aim_session_t *sess, unsigned char *buf, int len) |
745 | { | |
746 | int i = 0; | |
747 | ||
748 | if (!sess || !buf || !len) | |
749 | return; | |
750 | ||
751 | faimdprintf(sess, 1, "\nDump of %d bytes at %p:", len, buf); | |
752 | ||
753 | for (i = 0; i < len; i++) | |
754 | { | |
755 | if ((i % 8) == 0) | |
756 | faimdprintf(sess, 1, "\n\t"); | |
757 | ||
758 | faimdprintf(sess, 1, "0x%2x ", buf[i]); | |
759 | } | |
760 | ||
761 | faimdprintf(sess, 1, "\n\n"); | |
762 | ||
763 | return; | |
764 | } | |
765 | ||
d2698e03 | 766 | faim_export int aim_sendmemblock(struct aim_session_t *sess, struct aim_conn_t *conn, unsigned long offset, unsigned long len, const unsigned char *buf, unsigned char flag) |
b1eac25a | 767 | { |
768 | struct command_tx_struct *tx; | |
769 | int i = 0; | |
770 | ||
bb3e2abf | 771 | if (!sess || !conn) |
b1eac25a | 772 | return 0; |
773 | ||
774 | if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+2+16))) | |
775 | return -1; | |
776 | ||
777 | tx->lock = 1; | |
778 | ||
779 | i = aim_putsnac(tx->data, 0x0001, 0x0020, 0x0000, sess->snac_nextid++); | |
780 | i += aimutil_put16(tx->data+i, 0x0010); /* md5 is always 16 bytes */ | |
781 | ||
d2698e03 | 782 | if ((flag == AIM_SENDMEMBLOCK_FLAG_ISHASH) && |
783 | buf && (len == 0x10)) { /* we're getting a hash */ | |
784 | ||
785 | memcpy(tx->data+i, buf, 0x10); | |
786 | i += 0x10; | |
787 | ||
788 | } else if (buf && (len > 0)) { /* use input buffer */ | |
b1eac25a | 789 | md5_state_t state; |
790 | ||
791 | md5_init(&state); | |
792 | md5_append(&state, (const md5_byte_t *)buf, len); | |
793 | md5_finish(&state, (md5_byte_t *)(tx->data+i)); | |
794 | i += 0x10; | |
795 | ||
001c9b80 | 796 | } else if (len == 0) { /* no length, just hash NULL (buf is optional) */ |
797 | md5_state_t state; | |
798 | unsigned char nil = '\0'; | |
799 | ||
800 | /* | |
801 | * These MD5 routines are stupid in that you have to have | |
802 | * at least one append. So thats why this doesn't look | |
803 | * real logical. | |
804 | */ | |
805 | md5_init(&state); | |
806 | md5_append(&state, (const md5_byte_t *)&nil, 0); | |
807 | md5_finish(&state, (md5_byte_t *)(tx->data+i)); | |
808 | i += 0x10; | |
809 | ||
b1eac25a | 810 | } else { |
811 | ||
812 | if ((offset != 0x00001004) || (len != 0x00000004)) | |
813 | faimdprintf(sess, 0, "sendmemblock: WARNING: sending bad hash... you will be disconnected soon...\n"); | |
814 | ||
815 | /* | |
6c05e183 | 816 | * This data is correct for AIM 3.5.1670, offset 0x03ffffff, |
817 | * length 0x03ffffff (invalid). | |
b1eac25a | 818 | * |
819 | * Using this block is as close to "legal" as you can get without | |
820 | * using an AIM binary. | |
f7bb124a | 821 | * |
b1eac25a | 822 | */ |
6c05e183 | 823 | i += aimutil_put32(tx->data+i, 0x1df8cbae); |
824 | i += aimutil_put32(tx->data+i, 0x5523b839); | |
825 | i += aimutil_put32(tx->data+i, 0xa0e10db3); | |
826 | i += aimutil_put32(tx->data+i, 0xa46d3b39); | |
b1eac25a | 827 | |
828 | } | |
829 | ||
830 | tx->commandlen = i; | |
831 | tx->lock = 0; | |
832 | aim_tx_enqueue(sess, tx); | |
833 | ||
834 | return 0; | |
d32954e7 | 835 | } |
00ef5271 | 836 | |
837 | static int snachandler(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen) | |
838 | { | |
839 | ||
840 | if (snac->subtype == 0x0003) | |
841 | return hostonline(sess, mod, rx, snac, data, datalen); | |
842 | else if (snac->subtype == 0x0005) | |
843 | return redirect(sess, mod, rx, snac, data, datalen); | |
844 | else if (snac->subtype == 0x0007) | |
845 | return rateresp(sess, mod, rx, snac, data, datalen); | |
846 | else if (snac->subtype == 0x000a) | |
847 | return ratechange(sess, mod, rx, snac, data, datalen); | |
848 | else if (snac->subtype == 0x000f) | |
849 | return selfinfo(sess, mod, rx, snac, data, datalen); | |
850 | else if (snac->subtype == 0x0010) | |
851 | return evilnotify(sess, mod, rx, snac, data, datalen); | |
852 | else if (snac->subtype == 0x0013) | |
853 | return motd(sess, mod, rx, snac, data, datalen); | |
854 | else if (snac->subtype == 0x0018) | |
855 | return hostversions(sess, mod, rx, snac, data, datalen); | |
d32954e7 | 856 | else if (snac->subtype == 0x001f) |
857 | return memrequest(sess, mod, rx, snac, data, datalen); | |
00ef5271 | 858 | |
859 | return 0; | |
860 | } | |
861 | ||
862 | faim_internal int general_modfirst(struct aim_session_t *sess, aim_module_t *mod) | |
863 | { | |
864 | ||
865 | mod->family = 0x0001; | |
866 | mod->version = 0x0000; | |
867 | mod->flags = 0; | |
868 | strncpy(mod->name, "general", sizeof(mod->name)); | |
869 | mod->snachandler = snachandler; | |
870 | ||
871 | return 0; | |
872 | } |