4 * This contains all the functions needed to actually login.
12 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest);
13 static int aim_encode_password(const char *password, unsigned char *encoded);
16 * FIXME: Reimplement the TIS stuff.
18 #ifdef TIS_TELNET_PROXY
19 #include "tis_telnet_proxy.h"
22 faim_export int aim_sendconnack(struct aim_session_t *sess,
23 struct aim_conn_t *conn)
27 struct command_tx_struct *newpacket;
29 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0001, conn, 4)))
34 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
35 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
38 return aim_tx_enqueue(sess, newpacket);
42 * In AIM 3.5 protocol, the first stage of login is to request
43 * login from the Authorizer, passing it the screen name
44 * for verification. If the name is invalid, a 0017/0003
45 * is spit back, with the standard error contents. If valid,
46 * a 0017/0007 comes back, which is the signal to send
47 * it the main login command (0017/0002).
49 faim_export int aim_request_login(struct aim_session_t *sess,
50 struct aim_conn_t *conn,
54 struct command_tx_struct *newpacket;
56 if (!sess || !conn || !sn)
60 * For ICQ, we enable the ancient horrible login and stuff
61 * a key packet into the queue to make it look like we got
62 * a reply back. This is so the client doesn't know we're
63 * really not doing MD5 login.
65 * This may sound stupid, but I'm not in the best of moods and
66 * I don't plan to keep support for this crap around much longer.
67 * Its all AOL's fault anyway, really. I hate AOL. Really. They
68 * always seem to be able to piss me off by doing the dumbest little
69 * things. Like disabling MD5 logins for ICQ UINs, or adding purposefully
70 * wrong TLV lengths, or adding superfluous information to host strings,
74 if ((sn[0] >= '0') && (sn[0] <= '9')) {
75 struct command_rx_struct *newrx;
78 if (!(newrx = (struct command_rx_struct *)malloc(sizeof(struct command_rx_struct))))
80 memset(newrx, 0x00, sizeof(struct command_rx_struct));
82 newrx->hdrtype = AIM_FRAMETYPE_OSCAR;
83 newrx->hdr.oscar.type = 0x02;
84 newrx->hdr.oscar.seqnum = 0;
85 newrx->commandlen = 10+2+1;
87 if (!(newrx->data = malloc(newrx->commandlen))) {
92 i = aim_putsnac(newrx->data, 0x0017, 0x0007, 0x0000, 0x0000);
93 i += aimutil_put16(newrx->data+i, 0x01);
94 i += aimutil_putstr(newrx->data+i, "0", 1);
98 newrx->next = sess->queue_incoming;
99 sess->queue_incoming = newrx;
109 aim_sendconnack(sess, conn);
111 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+2+2+strlen(sn))))
116 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0006, 0x0000, 0x00010000);
117 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
119 newpacket->commandlen = curbyte;
122 return aim_tx_enqueue(sess, newpacket);
126 * send_login(int socket, char *sn, char *password)
128 * This is the initial login request packet.
130 * The password is encoded before transmition, as per
131 * encode_password(). See that function for their
132 * stupid method of doing it.
135 faim_export int aim_send_login (struct aim_session_t *sess,
136 struct aim_conn_t *conn,
137 char *sn, char *password,
138 struct client_info_s *clientinfo,
142 struct command_tx_struct *newpacket;
144 if (!clientinfo || !sn || !password)
147 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
152 newpacket->hdr.oscar.type = sess->snaclogin?0x02:0x01;
155 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0002, 0x0000, 0x00010000);
157 curbyte = aimutil_put16(newpacket->data, 0x0000);
158 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
161 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
163 if (sess->snaclogin) {
164 md5_byte_t digest[16];
166 aim_encode_password_md5(password, key, digest);
167 curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, (char *)digest);
169 char *password_encoded;
171 password_encoded = (char *) malloc(strlen(password));
172 aim_encode_password(password, password_encoded);
173 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0002, strlen(password), password_encoded);
174 free(password_encoded);
177 /* XXX is clientstring required by oscar? */
178 if (strlen(clientinfo->clientstring))
179 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring);
181 if (sess->snaclogin) {
182 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, (unsigned short)clientinfo->major2);
183 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, (unsigned short)clientinfo->major);
184 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, (unsigned short)clientinfo->minor);
185 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, (unsigned short)clientinfo->minor2);
186 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, (unsigned short)clientinfo->build);
188 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown);
189 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015);
191 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, 0x010a);
192 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, 0x0004);
193 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, 0x003c);
194 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0001);
195 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, 0x0cce);
196 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x00000055);
199 if (strlen(clientinfo->country))
200 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country);
202 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, 2, "us");
204 if (strlen(clientinfo->lang))
205 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang);
207 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, 2, "en");
209 newpacket->commandlen = curbyte;
212 return aim_tx_enqueue(sess, newpacket);
215 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest)
220 md5_append(&state, (const md5_byte_t *)key, strlen(key));
221 md5_append(&state, (const md5_byte_t *)password, strlen(password));
222 md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING));
223 md5_finish(&state, (md5_byte_t *)digest);
229 * aim_encode_password - Encode a password using old XOR method
230 * @password: incoming password
231 * @encoded: buffer to put encoded password
233 * This takes a const pointer to a (null terminated) string
234 * containing the unencoded password. It also gets passed
235 * an already allocated buffer to store the encoded password.
236 * This buffer should be the exact length of the password without
237 * the null. The encoded password buffer /is not %NULL terminated/.
239 * The encoding_table seems to be a fixed set of values. We'll
240 * hope it doesn't change over time!
242 * This is only used for the XOR method, not the better MD5 method.
245 static int aim_encode_password(const char *password, unsigned char *encoded)
247 u_char encoding_table[] = {
248 #if 0 /* old v1 table */
249 0xf3, 0xb3, 0x6c, 0x99,
250 0x95, 0x3f, 0xac, 0xb6,
251 0xc5, 0xfa, 0x6b, 0x63,
252 0x69, 0x6c, 0xc3, 0x9f
253 #else /* v2.1 table, also works for ICQ */
254 0xf3, 0x26, 0x81, 0xc4,
255 0x39, 0x86, 0xdb, 0x92,
256 0x71, 0xa3, 0xb9, 0xe6,
257 0x53, 0x7a, 0x95, 0x7c
263 for (i = 0; i < strlen(password); i++)
264 encoded[i] = (password[i] ^ encoding_table[i]);
270 * This is sent back as a general response to the login command.
271 * It can be either an error or a success, depending on the
272 * precense of certain TLVs.
274 * The client should check the value of logininfo->errorcode. If
275 * its nonzero, there was an error.
278 faim_internal int aim_authparse(struct aim_session_t *sess,
279 struct command_rx_struct *command)
281 struct aim_tlvlist_t *tlvlist;
284 rxcallback_t userfunc = NULL;
286 memset(&sess->logininfo, 0x00, sizeof(sess->logininfo));
289 * Read block of TLVs. All further data is derived
290 * from what is parsed here.
292 * For SNAC login, there's a 17/3 SNAC header in front.
296 tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10);
298 tlvlist = aim_readtlvchain(command->data, command->commandlen);
301 * No matter what, we should have a screen name.
303 sn = aim_gettlv_str(tlvlist, 0x0001, 1);
304 strncpy(sess->logininfo.screen_name, sn, strlen(sn));
308 * Check for an error code. If so, we should also
311 if (aim_gettlv(tlvlist, 0x0008, 1)) {
312 struct aim_tlv_t *errtlv;
313 errtlv = aim_gettlv(tlvlist, 0x0008, 1);
314 sess->logininfo.errorcode = aimutil_get16(errtlv->value);
315 sess->logininfo.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1);
318 * If we have both an IP number (0x0005) and a cookie (0x0006),
319 * then the login was successful.
321 else if (aim_gettlv(tlvlist, 0x0005, 1) && aim_gettlv(tlvlist, 0x0006, 1)
322 /*aim_gettlv(tlvlist, 0x0006, 1)->length*/) {
323 struct aim_tlv_t *tmptlv;
326 * IP address of BOS server.
328 sess->logininfo.BOSIP = aim_gettlv_str(tlvlist, 0x0005, 1);
331 * Authorization Cookie
333 tmptlv = aim_gettlv(tlvlist, 0x0006, 1);
334 memcpy(sess->logininfo.cookie, tmptlv->value, AIM_COOKIELEN);
337 * The email address attached to this account
338 * Not available for ICQ logins.
340 if (aim_gettlv(tlvlist, 0x0011, 1))
341 sess->logininfo.email = aim_gettlv_str(tlvlist, 0x0011, 1);
344 * The registration status. (Not real sure what it means.)
345 * Not available for ICQ logins.
347 if ((tmptlv = aim_gettlv(tlvlist, 0x0013, 1)))
348 sess->logininfo.regstatus = aimutil_get16(tmptlv->value);
352 userfunc = aim_callhandler(command->conn, 0x0017, 0x0003);
355 ret = userfunc(sess, command);
357 aim_freetlvchain(&tlvlist);
359 if (sess->logininfo.BOSIP) {
360 free(sess->logininfo.BOSIP);
361 sess->logininfo.BOSIP = NULL;
363 if (sess->logininfo.email) {
364 free(sess->logininfo.email);
365 sess->logininfo.email = NULL;
367 if (sess->logininfo.errorurl) {
368 free(sess->logininfo.errorurl);
369 sess->logininfo.errorurl = NULL;
376 * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed
377 * by only its length in a two byte word.
379 * Calls the client, which should then use the value to call aim_send_login.
382 faim_internal int aim_authkeyparse(struct aim_session_t *sess, struct command_rx_struct *command)
387 rxcallback_t userfunc;
389 keylen = aimutil_get16(command->data+10);
390 if (!(key = malloc(keylen+1)))
392 memcpy(key, command->data+12, keylen);
395 if ((userfunc = aim_callhandler(command->conn, 0x0017, 0x0007)))
396 ret = userfunc(sess, command, (char *)key);
404 * Generate an authorization response.
406 * You probably don't want this unless you're writing an AIM server.
409 faim_export unsigned long aim_sendauthresp(struct aim_session_t *sess,
410 struct aim_conn_t *conn,
411 char *sn, char *bosip,
412 char *cookie, char *email,
415 struct command_tx_struct *tx;
416 struct aim_tlvlist_t *tlvlist = NULL;
418 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0004, conn, 1152)))
424 aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn));
426 aim_addtlvtochain_str(&tlvlist, 0x0001, sess->logininfo.screen_name, strlen(sess->logininfo.screen_name));
428 if (sess->logininfo.errorcode) {
429 aim_addtlvtochain16(&tlvlist, 0x0008, sess->logininfo.errorcode);
430 aim_addtlvtochain_str(&tlvlist, 0x0004, sess->logininfo.errorurl, strlen(sess->logininfo.errorurl));
432 aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip));
433 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
434 aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email));
435 aim_addtlvtochain16(&tlvlist, 0x0013, (unsigned short)regstatus);
438 tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist);
440 return aim_tx_enqueue(sess, tx);
444 * Generate a random cookie. (Non-client use only)
446 faim_export int aim_gencookie(unsigned char *buf)
452 for (i=0; i < AIM_COOKIELEN; i++)
453 buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0));
459 * Send Server Ready. (Non-client)
461 faim_export int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn)
463 struct command_tx_struct *tx;
466 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+0x22)))
471 i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++);
473 i += aimutil_put16(tx->data+i, 0x0001);
474 i += aimutil_put16(tx->data+i, 0x0002);
475 i += aimutil_put16(tx->data+i, 0x0003);
476 i += aimutil_put16(tx->data+i, 0x0004);
477 i += aimutil_put16(tx->data+i, 0x0006);
478 i += aimutil_put16(tx->data+i, 0x0008);
479 i += aimutil_put16(tx->data+i, 0x0009);
480 i += aimutil_put16(tx->data+i, 0x000a);
481 i += aimutil_put16(tx->data+i, 0x000b);
482 i += aimutil_put16(tx->data+i, 0x000c);
483 i += aimutil_put16(tx->data+i, 0x0013);
484 i += aimutil_put16(tx->data+i, 0x0015);
488 return aim_tx_enqueue(sess, tx);
493 * Send service redirect. (Non-Client)
495 faim_export unsigned long aim_sendredirect(struct aim_session_t *sess,
496 struct aim_conn_t *conn,
497 unsigned short servid,
501 struct command_tx_struct *tx;
502 struct aim_tlvlist_t *tlvlist = NULL;
505 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
510 i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000);
512 aim_addtlvtochain16(&tlvlist, 0x000d, servid);
513 aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip));
514 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
516 tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i;
517 aim_freetlvchain(&tlvlist);
520 return aim_tx_enqueue(sess, tx);