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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 | ||
a25832e6 | 8 | #include <faim/aim.h> |
9de3ca7e | 9 | |
b5bc2a8c | 10 | #include "md5.h" |
11 | ||
12 | static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest); | |
9de3ca7e | 13 | |
14 | /* | |
15 | * FIXME: Reimplement the TIS stuff. | |
16 | */ | |
17 | #ifdef TIS_TELNET_PROXY | |
18 | #include "tis_telnet_proxy.h" | |
19 | #endif | |
20 | ||
78b3fb13 | 21 | faim_export int aim_sendconnack(struct aim_session_t *sess, |
22 | struct aim_conn_t *conn) | |
01b59e1e | 23 | { |
24 | int curbyte=0; | |
25 | ||
5b79dc93 | 26 | struct command_tx_struct *newpacket; |
01b59e1e | 27 | |
b69540e3 | 28 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0001, conn, 4))) |
01b59e1e | 29 | return -1; |
30 | ||
5b79dc93 | 31 | newpacket->lock = 1; |
01b59e1e | 32 | |
5b79dc93 | 33 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000); |
34 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
01b59e1e | 35 | |
5b79dc93 | 36 | newpacket->lock = 0; |
37 | return aim_tx_enqueue(sess, newpacket); | |
01b59e1e | 38 | } |
39 | ||
01b59e1e | 40 | /* |
41 | * In AIM 3.5 protocol, the first stage of login is to request | |
42 | * login from the Authorizer, passing it the screen name | |
43 | * for verification. If the name is invalid, a 0017/0003 | |
44 | * is spit back, with the standard error contents. If valid, | |
45 | * a 0017/0007 comes back, which is the signal to send | |
46 | * it the main login command (0017/0002). | |
47 | */ | |
78b3fb13 | 48 | faim_export int aim_request_login(struct aim_session_t *sess, |
49 | struct aim_conn_t *conn, | |
50 | char *sn) | |
01b59e1e | 51 | { |
52 | int curbyte=0; | |
53 | ||
5b79dc93 | 54 | struct command_tx_struct *newpacket; |
01b59e1e | 55 | |
b69540e3 | 56 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+2+2+strlen(sn)))) |
5b79dc93 | 57 | return -1; |
01b59e1e | 58 | |
5b79dc93 | 59 | newpacket->lock = 1; |
01b59e1e | 60 | |
5b79dc93 | 61 | curbyte += aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0006, 0x0000, 0x00010000); |
62 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); | |
01b59e1e | 63 | |
5b79dc93 | 64 | newpacket->lock = 0; |
65 | return aim_tx_enqueue(sess, newpacket); | |
01b59e1e | 66 | } |
01b59e1e | 67 | |
9de3ca7e | 68 | /* |
24286d93 | 69 | * send_login(int socket, char *sn, char *password) |
9de3ca7e | 70 | * |
71 | * This is the initial login request packet. | |
72 | * | |
73 | * The password is encoded before transmition, as per | |
74 | * encode_password(). See that function for their | |
75 | * stupid method of doing it. | |
76 | * | |
9de3ca7e | 77 | */ |
78b3fb13 | 78 | faim_export int aim_send_login (struct aim_session_t *sess, |
79 | struct aim_conn_t *conn, | |
80 | char *sn, char *password, | |
81 | struct client_info_s *clientinfo, | |
82 | char *key) | |
9de3ca7e | 83 | { |
9de3ca7e | 84 | int curbyte=0; |
b5bc2a8c | 85 | md5_byte_t digest[16]; |
5e02cf44 | 86 | |
5b79dc93 | 87 | struct command_tx_struct *newpacket; |
9de3ca7e | 88 | |
01b59e1e | 89 | if (!clientinfo || !sn || !password) |
90 | return -1; | |
91 | ||
b69540e3 | 92 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152))) |
5b79dc93 | 93 | return -1; |
9de3ca7e | 94 | |
5b79dc93 | 95 | newpacket->lock = 1; |
01b59e1e | 96 | |
b5bc2a8c | 97 | newpacket->hdr.oscar.type = 0x02; |
98 | ||
5b79dc93 | 99 | curbyte = aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0002, 0x0000, 0x00010000); |
b5bc2a8c | 100 | |
5b79dc93 | 101 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); |
01b59e1e | 102 | |
b5bc2a8c | 103 | aim_encode_password_md5(password, key, digest); |
78b3fb13 | 104 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, (char *)digest); |
9de3ca7e | 105 | |
13ebc4c4 | 106 | /* XXX is clientstring required by oscar? */ |
107 | if (strlen(clientinfo->clientstring)) | |
108 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring); | |
109 | ||
5ac21963 | 110 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, (unsigned short)clientinfo->major2); |
111 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, (unsigned short)clientinfo->major); | |
112 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, (unsigned short)clientinfo->minor); | |
113 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, (unsigned short)clientinfo->minor2); | |
114 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, (unsigned short)clientinfo->build); | |
b5bc2a8c | 115 | |
13ebc4c4 | 116 | curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown); |
b5bc2a8c | 117 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015); |
9de3ca7e | 118 | |
13ebc4c4 | 119 | if (strlen(clientinfo->country)) |
120 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country); | |
121 | else | |
122 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, 2, "us"); | |
123 | ||
124 | if (strlen(clientinfo->lang)) | |
125 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang); | |
126 | else | |
127 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, 2, "en"); | |
128 | ||
129 | newpacket->commandlen = curbyte; | |
9de3ca7e | 130 | |
5b79dc93 | 131 | newpacket->lock = 0; |
132 | return aim_tx_enqueue(sess, newpacket); | |
9de3ca7e | 133 | } |
9de3ca7e | 134 | |
b5bc2a8c | 135 | static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest) |
136 | { | |
137 | md5_state_t state; | |
138 | ||
139 | md5_init(&state); | |
140 | md5_append(&state, (const md5_byte_t *)key, strlen(key)); | |
141 | md5_append(&state, (const md5_byte_t *)password, strlen(password)); | |
142 | md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING)); | |
143 | md5_finish(&state, (md5_byte_t *)digest); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
9de3ca7e | 148 | /* |
149 | * int encode_password( | |
150 | * const char *password, | |
151 | * char *encoded | |
152 | * ); | |
153 | * | |
154 | * This takes a const pointer to a (null terminated) string | |
155 | * containing the unencoded password. It also gets passed | |
156 | * an already allocated buffer to store the encoded password. | |
157 | * This buffer should be the exact length of the password without | |
158 | * the null. The encoded password buffer IS NOT NULL TERMINATED. | |
159 | * | |
160 | * The encoding_table seems to be a fixed set of values. We'll | |
161 | * hope it doesn't change over time! | |
162 | * | |
b5bc2a8c | 163 | * NOTE: This is no longer used. Its here for historical reference. |
164 | * | |
9de3ca7e | 165 | */ |
b5bc2a8c | 166 | #if 0 |
167 | static int aim_encode_password(const char *password, unsigned char *encoded) | |
9de3ca7e | 168 | { |
169 | u_char encoding_table[] = { | |
b69540e3 | 170 | #if 0 /* old v1 table */ |
9de3ca7e | 171 | 0xf3, 0xb3, 0x6c, 0x99, |
172 | 0x95, 0x3f, 0xac, 0xb6, | |
173 | 0xc5, 0xfa, 0x6b, 0x63, | |
174 | 0x69, 0x6c, 0xc3, 0x9f | |
b69540e3 | 175 | #else /* v2.1 table, also works for ICQ */ |
5e02cf44 | 176 | 0xf3, 0x26, 0x81, 0xc4, |
b69540e3 | 177 | 0x39, 0x86, 0xdb, 0x92, |
178 | 0x71, 0xa3, 0xb9, 0xe6, | |
179 | 0x53, 0x7a, 0x95, 0x7c | |
180 | #endif | |
5e02cf44 | 181 | }; |
182 | ||
183 | int i; | |
b69540e3 | 184 | |
5e02cf44 | 185 | for (i = 0; i < strlen(password); i++) |
186 | encoded[i] = (password[i] ^ encoding_table[i]); | |
187 | ||
188 | return 0; | |
189 | } | |
b5bc2a8c | 190 | #endif |
5e02cf44 | 191 | |
01b59e1e | 192 | /* |
193 | * This is sent back as a general response to the login command. | |
194 | * It can be either an error or a success, depending on the | |
195 | * precense of certain TLVs. | |
196 | * | |
197 | * The client should check the value of logininfo->errorcode. If | |
198 | * its nonzero, there was an error. | |
199 | * | |
200 | */ | |
78b3fb13 | 201 | faim_internal int aim_authparse(struct aim_session_t *sess, |
202 | struct command_rx_struct *command) | |
01b59e1e | 203 | { |
204 | struct aim_tlvlist_t *tlvlist; | |
205 | int ret = 1; | |
206 | char *sn; | |
207 | rxcallback_t userfunc = NULL; | |
208 | ||
209 | memset(&sess->logininfo, 0x00, sizeof(sess->logininfo)); | |
210 | ||
211 | /* | |
212 | * Read block of TLVs. All further data is derived | |
213 | * from what is parsed here. | |
b5bc2a8c | 214 | * |
215 | * For SNAC login, there's a 17/3 SNAC header in front. | |
216 | * | |
01b59e1e | 217 | */ |
01b59e1e | 218 | tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10); |
b5bc2a8c | 219 | |
01b59e1e | 220 | /* |
221 | * No matter what, we should have a screen name. | |
222 | */ | |
223 | sn = aim_gettlv_str(tlvlist, 0x0001, 1); | |
b13c9e13 | 224 | strncpy(sess->logininfo.screen_name, sn, strlen(sn)); |
225 | free(sn); | |
226 | ||
01b59e1e | 227 | /* |
228 | * Check for an error code. If so, we should also | |
229 | * have an error url. | |
230 | */ | |
5e02cf44 | 231 | if (aim_gettlv(tlvlist, 0x0008, 1)) { |
232 | struct aim_tlv_t *errtlv; | |
233 | errtlv = aim_gettlv(tlvlist, 0x0008, 1); | |
234 | sess->logininfo.errorcode = aimutil_get16(errtlv->value); | |
235 | sess->logininfo.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1); | |
236 | } | |
01b59e1e | 237 | /* |
238 | * If we have both an IP number (0x0005) and a cookie (0x0006), | |
239 | * then the login was successful. | |
240 | */ | |
b69540e3 | 241 | else if (aim_gettlv(tlvlist, 0x0005, 1) && aim_gettlv(tlvlist, 0x0006, 1) |
242 | /*aim_gettlv(tlvlist, 0x0006, 1)->length*/) { | |
5e02cf44 | 243 | struct aim_tlv_t *tmptlv; |
244 | ||
245 | /* | |
246 | * IP address of BOS server. | |
247 | */ | |
248 | sess->logininfo.BOSIP = aim_gettlv_str(tlvlist, 0x0005, 1); | |
249 | ||
250 | /* | |
251 | * Authorization Cookie | |
252 | */ | |
253 | tmptlv = aim_gettlv(tlvlist, 0x0006, 1); | |
254 | memcpy(sess->logininfo.cookie, tmptlv->value, AIM_COOKIELEN); | |
255 | ||
256 | /* | |
257 | * The email address attached to this account | |
258 | * Not available for ICQ logins. | |
259 | */ | |
260 | if (aim_gettlv(tlvlist, 0x0011, 1)) | |
01b59e1e | 261 | sess->logininfo.email = aim_gettlv_str(tlvlist, 0x0011, 1); |
5e02cf44 | 262 | |
263 | /* | |
264 | * The registration status. (Not real sure what it means.) | |
265 | * Not available for ICQ logins. | |
266 | */ | |
267 | if ((tmptlv = aim_gettlv(tlvlist, 0x0013, 1))) | |
01b59e1e | 268 | sess->logininfo.regstatus = aimutil_get16(tmptlv->value); |
269 | ||
5e02cf44 | 270 | } |
01b59e1e | 271 | |
01b59e1e | 272 | userfunc = aim_callhandler(command->conn, 0x0017, 0x0003); |
b5bc2a8c | 273 | |
01b59e1e | 274 | if (userfunc) |
275 | ret = userfunc(sess, command); | |
276 | ||
277 | aim_freetlvchain(&tlvlist); | |
278 | ||
dad2e696 | 279 | if (sess->logininfo.BOSIP) { |
91c55d47 | 280 | free(sess->logininfo.BOSIP); |
dad2e696 | 281 | sess->logininfo.BOSIP = NULL; |
282 | } | |
283 | if (sess->logininfo.email) { | |
91c55d47 | 284 | free(sess->logininfo.email); |
dad2e696 | 285 | sess->logininfo.email = NULL; |
286 | } | |
287 | if (sess->logininfo.errorurl) { | |
91c55d47 | 288 | free(sess->logininfo.errorurl); |
dad2e696 | 289 | sess->logininfo.errorurl = NULL; |
290 | } | |
01b59e1e | 291 | |
292 | return ret; | |
293 | } | |
e6b05d80 | 294 | |
b5bc2a8c | 295 | /* |
296 | * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed | |
297 | * by only its length in a two byte word. | |
298 | * | |
299 | * Calls the client, which should then use the value to call aim_send_login. | |
300 | * | |
301 | */ | |
78b3fb13 | 302 | faim_internal int aim_authkeyparse(struct aim_session_t *sess, struct command_rx_struct *command) |
b5bc2a8c | 303 | { |
304 | unsigned char *key; | |
305 | int keylen; | |
306 | int ret = 1; | |
307 | rxcallback_t userfunc; | |
308 | ||
309 | keylen = aimutil_get16(command->data+10); | |
98c88242 | 310 | if (!(key = malloc(keylen+1))) |
311 | return ret; | |
b5bc2a8c | 312 | memcpy(key, command->data+12, keylen); |
313 | key[keylen] = '\0'; | |
314 | ||
315 | if ((userfunc = aim_callhandler(command->conn, 0x0017, 0x0007))) | |
78b3fb13 | 316 | ret = userfunc(sess, command, (char *)key); |
b5bc2a8c | 317 | |
318 | free(key); | |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
e6b05d80 | 323 | /* |
324 | * Generate an authorization response. | |
325 | * | |
326 | * You probably don't want this unless you're writing an AIM server. | |
327 | * | |
328 | */ | |
78b3fb13 | 329 | faim_export unsigned long aim_sendauthresp(struct aim_session_t *sess, |
330 | struct aim_conn_t *conn, | |
331 | char *sn, char *bosip, | |
332 | char *cookie, char *email, | |
333 | int regstatus) | |
e6b05d80 | 334 | { |
5b79dc93 | 335 | struct command_tx_struct *tx; |
e6b05d80 | 336 | struct aim_tlvlist_t *tlvlist = NULL; |
337 | ||
b69540e3 | 338 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0004, conn, 1152))) |
5b79dc93 | 339 | return -1; |
e6b05d80 | 340 | |
5b79dc93 | 341 | tx->lock = 1; |
e6b05d80 | 342 | |
343 | if (sn) | |
344 | aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn)); | |
345 | else | |
346 | aim_addtlvtochain_str(&tlvlist, 0x0001, sess->logininfo.screen_name, strlen(sess->logininfo.screen_name)); | |
347 | ||
348 | if (sess->logininfo.errorcode) { | |
349 | aim_addtlvtochain16(&tlvlist, 0x0008, sess->logininfo.errorcode); | |
350 | aim_addtlvtochain_str(&tlvlist, 0x0004, sess->logininfo.errorurl, strlen(sess->logininfo.errorurl)); | |
351 | } else { | |
352 | aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip)); | |
353 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
354 | aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email)); | |
5ac21963 | 355 | aim_addtlvtochain16(&tlvlist, 0x0013, (unsigned short)regstatus); |
e6b05d80 | 356 | } |
357 | ||
5b79dc93 | 358 | tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist); |
359 | tx->lock = 0; | |
360 | return aim_tx_enqueue(sess, tx); | |
e6b05d80 | 361 | } |
362 | ||
363 | /* | |
364 | * Generate a random cookie. (Non-client use only) | |
365 | */ | |
78b3fb13 | 366 | faim_export int aim_gencookie(unsigned char *buf) |
e6b05d80 | 367 | { |
368 | int i; | |
369 | ||
370 | srand(time(NULL)); | |
371 | ||
372 | for (i=0; i < AIM_COOKIELEN; i++) | |
373 | buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0)); | |
374 | ||
375 | return i; | |
376 | } | |
377 | ||
378 | /* | |
379 | * Send Server Ready. (Non-client) | |
380 | */ | |
78b3fb13 | 381 | faim_export int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn) |
e6b05d80 | 382 | { |
5b79dc93 | 383 | struct command_tx_struct *tx; |
e6b05d80 | 384 | int i = 0; |
385 | ||
b69540e3 | 386 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+0x22))) |
5b79dc93 | 387 | return -1; |
e6b05d80 | 388 | |
5b79dc93 | 389 | tx->lock = 1; |
e6b05d80 | 390 | |
67c0bb2f | 391 | i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++); |
5b79dc93 | 392 | |
393 | i += aimutil_put16(tx->data+i, 0x0001); | |
394 | i += aimutil_put16(tx->data+i, 0x0002); | |
395 | i += aimutil_put16(tx->data+i, 0x0003); | |
396 | i += aimutil_put16(tx->data+i, 0x0004); | |
397 | i += aimutil_put16(tx->data+i, 0x0006); | |
398 | i += aimutil_put16(tx->data+i, 0x0008); | |
399 | i += aimutil_put16(tx->data+i, 0x0009); | |
400 | i += aimutil_put16(tx->data+i, 0x000a); | |
401 | i += aimutil_put16(tx->data+i, 0x000b); | |
402 | i += aimutil_put16(tx->data+i, 0x000c); | |
67c0bb2f | 403 | i += aimutil_put16(tx->data+i, 0x0013); |
404 | i += aimutil_put16(tx->data+i, 0x0015); | |
5b79dc93 | 405 | |
67c0bb2f | 406 | tx->commandlen = i; |
5b79dc93 | 407 | tx->lock = 0; |
5b79dc93 | 408 | return aim_tx_enqueue(sess, tx); |
e6b05d80 | 409 | } |
410 | ||
411 | ||
412 | /* | |
413 | * Send service redirect. (Non-Client) | |
414 | */ | |
78b3fb13 | 415 | faim_export unsigned long aim_sendredirect(struct aim_session_t *sess, |
416 | struct aim_conn_t *conn, | |
417 | unsigned short servid, | |
418 | char *ip, | |
419 | char *cookie) | |
e6b05d80 | 420 | { |
5b79dc93 | 421 | struct command_tx_struct *tx; |
e6b05d80 | 422 | struct aim_tlvlist_t *tlvlist = NULL; |
423 | int i = 0; | |
424 | ||
b69540e3 | 425 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152))) |
5b79dc93 | 426 | return -1; |
427 | ||
428 | tx->lock = 1; | |
e6b05d80 | 429 | |
13ebc4c4 | 430 | i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000); |
e6b05d80 | 431 | |
432 | aim_addtlvtochain16(&tlvlist, 0x000d, servid); | |
433 | aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip)); | |
434 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
435 | ||
5b79dc93 | 436 | tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i; |
e6b05d80 | 437 | aim_freetlvchain(&tlvlist); |
438 | ||
5b79dc93 | 439 | tx->lock = 0; |
440 | return aim_tx_enqueue(sess, tx); | |
e6b05d80 | 441 | } |