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Commit | Line | Data |
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1 | /* | |
2 | * aim_login.c | |
3 | * | |
4 | * This contains all the functions needed to actually login. | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <faim/aim.h> | |
9 | ||
10 | ||
11 | /* | |
12 | * FIXME: Reimplement the TIS stuff. | |
13 | */ | |
14 | #ifdef TIS_TELNET_PROXY | |
15 | #include "tis_telnet_proxy.h" | |
16 | #endif | |
17 | ||
18 | int aim_sendconnack(struct aim_session_t *sess, | |
19 | struct aim_conn_t *conn) | |
20 | { | |
21 | int curbyte=0; | |
22 | ||
23 | struct command_tx_struct *newpacket; | |
24 | ||
25 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0001, conn, 4))) | |
26 | return -1; | |
27 | ||
28 | newpacket->lock = 1; | |
29 | ||
30 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000); | |
31 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
32 | ||
33 | newpacket->lock = 0; | |
34 | return aim_tx_enqueue(sess, newpacket); | |
35 | } | |
36 | ||
37 | #ifdef SNACLOGIN | |
38 | /* | |
39 | * In AIM 3.5 protocol, the first stage of login is to request | |
40 | * login from the Authorizer, passing it the screen name | |
41 | * for verification. If the name is invalid, a 0017/0003 | |
42 | * is spit back, with the standard error contents. If valid, | |
43 | * a 0017/0007 comes back, which is the signal to send | |
44 | * it the main login command (0017/0002). | |
45 | */ | |
46 | int aim_request_login(struct aim_session_t *sess, | |
47 | struct aim_conn_t *conn, | |
48 | char *sn) | |
49 | { | |
50 | int curbyte=0; | |
51 | ||
52 | struct command_tx_struct *newpacket; | |
53 | ||
54 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+2+2+strlen(sn)))) | |
55 | return -1; | |
56 | ||
57 | newpacket->lock = 1; | |
58 | ||
59 | curbyte += aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0006, 0x0000, 0x00010000); | |
60 | curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); | |
61 | ||
62 | newpacket->lock = 0; | |
63 | return aim_tx_enqueue(sess, newpacket); | |
64 | } | |
65 | #endif /* SNACLOGIN */ | |
66 | ||
67 | /* | |
68 | * send_login(int socket, char *sn, char *password) | |
69 | * | |
70 | * This is the initial login request packet. | |
71 | * | |
72 | * The password is encoded before transmition, as per | |
73 | * encode_password(). See that function for their | |
74 | * stupid method of doing it. | |
75 | * | |
76 | */ | |
77 | int aim_send_login (struct aim_session_t *sess, | |
78 | struct aim_conn_t *conn, | |
79 | char *sn, char *password, struct client_info_s *clientinfo) | |
80 | { | |
81 | u_char *password_encoded = NULL; /* to store encoded password */ | |
82 | int curbyte=0; | |
83 | int icqmode = 0; | |
84 | ||
85 | struct command_tx_struct *newpacket; | |
86 | ||
87 | if (!clientinfo || !sn || !password) | |
88 | return -1; | |
89 | ||
90 | if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152))) | |
91 | return -1; | |
92 | ||
93 | /* | |
94 | * For ICQ logins, the client version must be at | |
95 | * least as high as ICQ2000a. | |
96 | */ | |
97 | if ((sn[0] >= '0') && (sn[0] <= '9')) { | |
98 | icqmode = 1; /* needs a different password encoding */ | |
99 | if (clientinfo && (clientinfo->major < 4)) { | |
100 | printf("faim: icq: version must be at least 4.30.3141 for ICQ OSCAR login\n"); | |
101 | return -1; | |
102 | } | |
103 | if (strlen(password) > 8) { | |
104 | printf("faim: icq: password too long (8 char max)\n"); | |
105 | return -1; | |
106 | } | |
107 | } | |
108 | ||
109 | #ifdef SNACLOGIN | |
110 | newpacket->commandlen = 10; | |
111 | newpacket->commandlen += 2 + 2 + strlen(sn); | |
112 | newpacket->commandlen += 2 + 2 + strlen(password); | |
113 | newpacket->commandlen += 2 + 2 + strlen(clientinfo->clientstring); | |
114 | newpacket->commandlen += 56; | |
115 | ||
116 | newpacket->lock = 1; | |
117 | ||
118 | curbyte = aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0002, 0x0000, 0x00010000); | |
119 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn); | |
120 | password_encoded = (u_char *) malloc(strlen(password)); | |
121 | aim_encode_password(password, password_encoded); | |
122 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0002, strlen(password), password_encoded); | |
123 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0003, | |
124 | strlen(clientinfo->clientstring), | |
125 | clientinfo->clientstring); | |
126 | /* XXX: should use clientinfo provided version info */ | |
127 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x0016, 0x0004); | |
128 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x0017, 0x0003); | |
129 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x0018, 0x0005); | |
130 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0000); | |
131 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x001a, 0x0686); | |
132 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0001, 0x0002, clientinfo->country); | |
133 | curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0001, 0x0002, clientinfo->lang); | |
134 | curbyte+= aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x0000002a); | |
135 | curbyte+= aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015); | |
136 | #else | |
137 | ||
138 | newpacket->commandlen = 4 + 4 + strlen(sn) + 4+strlen(password) + 6; | |
139 | ||
140 | newpacket->commandlen += 8; /* tlv 0x0014 */ | |
141 | ||
142 | if (clientinfo) { | |
143 | if (strlen(clientinfo->clientstring)) | |
144 | newpacket->commandlen += 4+strlen(clientinfo->clientstring); | |
145 | newpacket->commandlen += 6+6+6+6; | |
146 | if (strlen(clientinfo->country)) | |
147 | newpacket->commandlen += 4+strlen(clientinfo->country); | |
148 | if (strlen(clientinfo->lang)) | |
149 | newpacket->commandlen += 4+strlen(clientinfo->lang); | |
150 | } | |
151 | ||
152 | newpacket->lock = 1; | |
153 | newpacket->hdr.oscar.type = 0x01; | |
154 | ||
155 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000); | |
156 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
157 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001); | |
158 | curbyte += aimutil_put16(newpacket->data+curbyte, strlen(sn)); | |
159 | curbyte += aimutil_putstr(newpacket->data+curbyte, sn, strlen(sn)); | |
160 | ||
161 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0002); | |
162 | curbyte += aimutil_put16(newpacket->data+curbyte, strlen(password)); | |
163 | password_encoded = (char *) malloc(strlen(password)); | |
164 | aim_encode_password(password, password_encoded); | |
165 | curbyte += aimutil_putstr(newpacket->data+curbyte, password_encoded, strlen(password)); | |
166 | free(password_encoded); | |
167 | ||
168 | if (strlen(clientinfo->clientstring)) { | |
169 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x0003); | |
170 | curbyte += aimutil_put16(newpacket->data+curbyte, strlen(clientinfo->clientstring)); | |
171 | curbyte += aimutil_putstr(newpacket->data+curbyte, clientinfo->clientstring, strlen(clientinfo->clientstring)); | |
172 | } | |
173 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, /*0x010a*/ 0x0004); | |
174 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, clientinfo->major /*0x0001*/); | |
175 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, clientinfo->minor /*0x0001*/); | |
176 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0001); | |
177 | curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, clientinfo->build /*0x0013*/); | |
178 | ||
179 | curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x00000055); | |
180 | ||
181 | if (strlen(clientinfo->country)) { | |
182 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x000e); | |
183 | curbyte += aimutil_put16(newpacket->data+curbyte, strlen(clientinfo->country)); | |
184 | curbyte += aimutil_putstr(newpacket->data+curbyte, clientinfo->country, strlen(clientinfo->country)); | |
185 | } | |
186 | if (strlen(clientinfo->lang)) { | |
187 | curbyte += aimutil_put16(newpacket->data+curbyte, 0x000f); | |
188 | curbyte += aimutil_put16(newpacket->data+curbyte, strlen(clientinfo->lang)); | |
189 | curbyte += aimutil_putstr(newpacket->data+curbyte, clientinfo->lang, strlen(clientinfo->lang)); | |
190 | } | |
191 | ||
192 | #endif | |
193 | ||
194 | newpacket->lock = 0; | |
195 | return aim_tx_enqueue(sess, newpacket); | |
196 | } | |
197 | ||
198 | /* | |
199 | * int encode_password( | |
200 | * const char *password, | |
201 | * char *encoded | |
202 | * ); | |
203 | * | |
204 | * This takes a const pointer to a (null terminated) string | |
205 | * containing the unencoded password. It also gets passed | |
206 | * an already allocated buffer to store the encoded password. | |
207 | * This buffer should be the exact length of the password without | |
208 | * the null. The encoded password buffer IS NOT NULL TERMINATED. | |
209 | * | |
210 | * The encoding_table seems to be a fixed set of values. We'll | |
211 | * hope it doesn't change over time! | |
212 | * | |
213 | */ | |
214 | int aim_encode_password(const char *password, u_char *encoded) | |
215 | { | |
216 | u_char encoding_table[] = { | |
217 | #if 0 /* old v1 table */ | |
218 | 0xf3, 0xb3, 0x6c, 0x99, | |
219 | 0x95, 0x3f, 0xac, 0xb6, | |
220 | 0xc5, 0xfa, 0x6b, 0x63, | |
221 | 0x69, 0x6c, 0xc3, 0x9f | |
222 | #else /* v2.1 table, also works for ICQ */ | |
223 | 0xf3, 0x26, 0x81, 0xc4, | |
224 | 0x39, 0x86, 0xdb, 0x92, | |
225 | 0x71, 0xa3, 0xb9, 0xe6, | |
226 | 0x53, 0x7a, 0x95, 0x7c | |
227 | #endif | |
228 | }; | |
229 | ||
230 | int i; | |
231 | ||
232 | for (i = 0; i < strlen(password); i++) | |
233 | encoded[i] = (password[i] ^ encoding_table[i]); | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | /* | |
239 | * This is sent back as a general response to the login command. | |
240 | * It can be either an error or a success, depending on the | |
241 | * precense of certain TLVs. | |
242 | * | |
243 | * The client should check the value of logininfo->errorcode. If | |
244 | * its nonzero, there was an error. | |
245 | * | |
246 | */ | |
247 | int aim_authparse(struct aim_session_t *sess, | |
248 | struct command_rx_struct *command) | |
249 | { | |
250 | struct aim_tlvlist_t *tlvlist; | |
251 | int ret = 1; | |
252 | char *sn; | |
253 | rxcallback_t userfunc = NULL; | |
254 | ||
255 | memset(&sess->logininfo, 0x00, sizeof(sess->logininfo)); | |
256 | ||
257 | /* | |
258 | * Read block of TLVs. All further data is derived | |
259 | * from what is parsed here. | |
260 | */ | |
261 | #ifdef SNACLOGIN | |
262 | tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10); | |
263 | #else | |
264 | tlvlist = aim_readtlvchain(command->data, command->commandlen); | |
265 | #endif | |
266 | /* | |
267 | * No matter what, we should have a screen name. | |
268 | */ | |
269 | sn = aim_gettlv_str(tlvlist, 0x0001, 1); | |
270 | memcpy(sess->logininfo.screen_name, sn, strlen(sn)); | |
271 | sn[(strlen(sn))] = '\0'; | |
272 | ||
273 | /* | |
274 | * Check for an error code. If so, we should also | |
275 | * have an error url. | |
276 | */ | |
277 | if (aim_gettlv(tlvlist, 0x0008, 1)) { | |
278 | struct aim_tlv_t *errtlv; | |
279 | errtlv = aim_gettlv(tlvlist, 0x0008, 1); | |
280 | sess->logininfo.errorcode = aimutil_get16(errtlv->value); | |
281 | sess->logininfo.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1); | |
282 | } | |
283 | /* | |
284 | * If we have both an IP number (0x0005) and a cookie (0x0006), | |
285 | * then the login was successful. | |
286 | */ | |
287 | else if (aim_gettlv(tlvlist, 0x0005, 1) && aim_gettlv(tlvlist, 0x0006, 1) | |
288 | /*aim_gettlv(tlvlist, 0x0006, 1)->length*/) { | |
289 | struct aim_tlv_t *tmptlv; | |
290 | ||
291 | /* | |
292 | * IP address of BOS server. | |
293 | */ | |
294 | sess->logininfo.BOSIP = aim_gettlv_str(tlvlist, 0x0005, 1); | |
295 | ||
296 | /* | |
297 | * Authorization Cookie | |
298 | */ | |
299 | tmptlv = aim_gettlv(tlvlist, 0x0006, 1); | |
300 | memcpy(sess->logininfo.cookie, tmptlv->value, AIM_COOKIELEN); | |
301 | ||
302 | /* | |
303 | * The email address attached to this account | |
304 | * Not available for ICQ logins. | |
305 | */ | |
306 | if (aim_gettlv(tlvlist, 0x0011, 1)) | |
307 | sess->logininfo.email = aim_gettlv_str(tlvlist, 0x0011, 1); | |
308 | ||
309 | /* | |
310 | * The registration status. (Not real sure what it means.) | |
311 | * Not available for ICQ logins. | |
312 | */ | |
313 | if ((tmptlv = aim_gettlv(tlvlist, 0x0013, 1))) | |
314 | sess->logininfo.regstatus = aimutil_get16(tmptlv->value); | |
315 | ||
316 | } | |
317 | ||
318 | #ifdef SNACLOGIN | |
319 | userfunc = aim_callhandler(command->conn, 0x0017, 0x0003); | |
320 | #else | |
321 | userfunc = aim_callhandler(command->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_AUTHSUCCESS); | |
322 | #endif | |
323 | if (userfunc) | |
324 | ret = userfunc(sess, command); | |
325 | ||
326 | aim_freetlvchain(&tlvlist); | |
327 | ||
328 | /* These have been clobbered by the freetlvchain */ | |
329 | sess->logininfo.BOSIP = NULL; | |
330 | sess->logininfo.email = NULL; | |
331 | sess->logininfo.errorurl = NULL; | |
332 | ||
333 | return ret; | |
334 | } | |
335 | ||
336 | /* | |
337 | * Generate an authorization response. | |
338 | * | |
339 | * You probably don't want this unless you're writing an AIM server. | |
340 | * | |
341 | */ | |
342 | unsigned long aim_sendauthresp(struct aim_session_t *sess, | |
343 | struct aim_conn_t *conn, | |
344 | char *sn, char *bosip, | |
345 | char *cookie, char *email, | |
346 | int regstatus) | |
347 | { | |
348 | struct command_tx_struct *tx; | |
349 | struct aim_tlvlist_t *tlvlist = NULL; | |
350 | ||
351 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0004, conn, 1152))) | |
352 | return -1; | |
353 | ||
354 | tx->lock = 1; | |
355 | ||
356 | if (sn) | |
357 | aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn)); | |
358 | else | |
359 | aim_addtlvtochain_str(&tlvlist, 0x0001, sess->logininfo.screen_name, strlen(sess->logininfo.screen_name)); | |
360 | ||
361 | if (sess->logininfo.errorcode) { | |
362 | aim_addtlvtochain16(&tlvlist, 0x0008, sess->logininfo.errorcode); | |
363 | aim_addtlvtochain_str(&tlvlist, 0x0004, sess->logininfo.errorurl, strlen(sess->logininfo.errorurl)); | |
364 | } else { | |
365 | aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip)); | |
366 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
367 | aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email)); | |
368 | aim_addtlvtochain16(&tlvlist, 0x0013, regstatus); | |
369 | } | |
370 | ||
371 | tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist); | |
372 | tx->lock = 0; | |
373 | return aim_tx_enqueue(sess, tx); | |
374 | } | |
375 | ||
376 | /* | |
377 | * Generate a random cookie. (Non-client use only) | |
378 | */ | |
379 | int aim_gencookie(unsigned char *buf) | |
380 | { | |
381 | int i; | |
382 | ||
383 | srand(time(NULL)); | |
384 | ||
385 | for (i=0; i < AIM_COOKIELEN; i++) | |
386 | buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0)); | |
387 | ||
388 | return i; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Send Server Ready. (Non-client) | |
393 | */ | |
394 | int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn) | |
395 | { | |
396 | struct command_tx_struct *tx; | |
397 | int i = 0; | |
398 | ||
399 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+0x22))) | |
400 | return -1; | |
401 | ||
402 | tx->lock = 1; | |
403 | ||
404 | i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++); | |
405 | ||
406 | i += aimutil_put16(tx->data+i, 0x0001); | |
407 | i += aimutil_put16(tx->data+i, 0x0002); | |
408 | i += aimutil_put16(tx->data+i, 0x0003); | |
409 | i += aimutil_put16(tx->data+i, 0x0004); | |
410 | i += aimutil_put16(tx->data+i, 0x0006); | |
411 | i += aimutil_put16(tx->data+i, 0x0008); | |
412 | i += aimutil_put16(tx->data+i, 0x0009); | |
413 | i += aimutil_put16(tx->data+i, 0x000a); | |
414 | i += aimutil_put16(tx->data+i, 0x000b); | |
415 | i += aimutil_put16(tx->data+i, 0x000c); | |
416 | i += aimutil_put16(tx->data+i, 0x0013); | |
417 | i += aimutil_put16(tx->data+i, 0x0015); | |
418 | ||
419 | tx->commandlen = i; | |
420 | tx->lock = 0; | |
421 | return aim_tx_enqueue(sess, tx); | |
422 | } | |
423 | ||
424 | ||
425 | /* | |
426 | * Send service redirect. (Non-Client) | |
427 | */ | |
428 | unsigned long aim_sendredirect(struct aim_session_t *sess, | |
429 | struct aim_conn_t *conn, | |
430 | unsigned short servid, | |
431 | char *ip, | |
432 | char *cookie) | |
433 | { | |
434 | struct command_tx_struct *tx; | |
435 | struct aim_tlvlist_t *tlvlist = NULL; | |
436 | int i = 0; | |
437 | ||
438 | if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152))) | |
439 | return -1; | |
440 | ||
441 | tx->lock = 1; | |
442 | ||
443 | i += aimutil_put16(tx->data+i, 0x0001); | |
444 | i += aimutil_put16(tx->data+i, 0x0005); | |
445 | i += aimutil_put16(tx->data+i, 0x0000); | |
446 | i += aimutil_put16(tx->data+i, 0x0000); | |
447 | i += aimutil_put16(tx->data+i, 0x0000); | |
448 | ||
449 | aim_addtlvtochain16(&tlvlist, 0x000d, servid); | |
450 | aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip)); | |
451 | aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN); | |
452 | ||
453 | tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i; | |
454 | aim_freetlvchain(&tlvlist); | |
455 | ||
456 | tx->lock = 0; | |
457 | return aim_tx_enqueue(sess, tx); | |
458 | } |