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;
103 sess->flags &= ~AIM_SESS_FLAGS_SNACLOGIN;
108 sess->flags |= AIM_SESS_FLAGS_SNACLOGIN;
110 aim_sendconnack(sess, conn);
112 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+2+2+strlen(sn))))
117 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0006, 0x0000, 0x00010000);
118 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
120 newpacket->commandlen = curbyte;
123 return aim_tx_enqueue(sess, newpacket);
127 * send_login(int socket, char *sn, char *password)
129 * This is the initial login request packet.
131 * The password is encoded before transmition, as per
132 * encode_password(). See that function for their
133 * stupid method of doing it.
136 faim_export int aim_send_login (struct aim_session_t *sess,
137 struct aim_conn_t *conn,
138 char *sn, char *password,
139 struct client_info_s *clientinfo,
143 struct command_tx_struct *newpacket;
145 if (!clientinfo || !sn || !password)
148 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
153 newpacket->hdr.oscar.type = (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)?0x02:0x01;
155 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)
156 curbyte = aim_putsnac(newpacket->data, 0x0017, 0x0002, 0x0000, 0x00010000);
158 curbyte = aimutil_put16(newpacket->data, 0x0000);
159 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
162 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
164 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) {
165 md5_byte_t digest[16];
167 aim_encode_password_md5(password, key, digest);
168 curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, (char *)digest);
170 char *password_encoded;
172 password_encoded = (char *) malloc(strlen(password));
173 aim_encode_password(password, password_encoded);
174 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0002, strlen(password), password_encoded);
175 free(password_encoded);
178 /* XXX is clientstring required by oscar? */
179 if (strlen(clientinfo->clientstring))
180 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring);
182 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN) {
183 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, (unsigned short)clientinfo->major2);
184 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, (unsigned short)clientinfo->major);
185 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, (unsigned short)clientinfo->minor);
186 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, (unsigned short)clientinfo->minor2);
187 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, (unsigned short)clientinfo->build);
189 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown);
190 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015);
192 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, 0x010a);
193 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, 0x0004);
194 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, 0x003c);
195 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, 0x0001);
196 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, 0x0cce);
197 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, 0x00000055);
200 if (strlen(clientinfo->country))
201 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country);
203 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, 2, "us");
205 if (strlen(clientinfo->lang))
206 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang);
208 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, 2, "en");
210 newpacket->commandlen = curbyte;
213 return aim_tx_enqueue(sess, newpacket);
216 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest)
221 md5_append(&state, (const md5_byte_t *)key, strlen(key));
222 md5_append(&state, (const md5_byte_t *)password, strlen(password));
223 md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING));
224 md5_finish(&state, (md5_byte_t *)digest);
230 * aim_encode_password - Encode a password using old XOR method
231 * @password: incoming password
232 * @encoded: buffer to put encoded password
234 * This takes a const pointer to a (null terminated) string
235 * containing the unencoded password. It also gets passed
236 * an already allocated buffer to store the encoded password.
237 * This buffer should be the exact length of the password without
238 * the null. The encoded password buffer /is not %NULL terminated/.
240 * The encoding_table seems to be a fixed set of values. We'll
241 * hope it doesn't change over time!
243 * This is only used for the XOR method, not the better MD5 method.
246 static int aim_encode_password(const char *password, unsigned char *encoded)
248 u_char encoding_table[] = {
249 #if 0 /* old v1 table */
250 0xf3, 0xb3, 0x6c, 0x99,
251 0x95, 0x3f, 0xac, 0xb6,
252 0xc5, 0xfa, 0x6b, 0x63,
253 0x69, 0x6c, 0xc3, 0x9f
254 #else /* v2.1 table, also works for ICQ */
255 0xf3, 0x26, 0x81, 0xc4,
256 0x39, 0x86, 0xdb, 0x92,
257 0x71, 0xa3, 0xb9, 0xe6,
258 0x53, 0x7a, 0x95, 0x7c
264 for (i = 0; i < strlen(password); i++)
265 encoded[i] = (password[i] ^ encoding_table[i]);
271 * This is sent back as a general response to the login command.
272 * It can be either an error or a success, depending on the
273 * precense of certain TLVs.
275 * The client should check the value of logininfo->errorcode. If
276 * its nonzero, there was an error.
279 faim_internal int aim_authparse(struct aim_session_t *sess,
280 struct command_rx_struct *command)
282 struct aim_tlvlist_t *tlvlist;
285 rxcallback_t userfunc = NULL;
287 memset(&sess->logininfo, 0x00, sizeof(sess->logininfo));
290 * Read block of TLVs. All further data is derived
291 * from what is parsed here.
293 * For SNAC login, there's a 17/3 SNAC header in front.
296 if (sess->flags & AIM_SESS_FLAGS_SNACLOGIN)
297 tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10);
299 tlvlist = aim_readtlvchain(command->data, command->commandlen);
302 * No matter what, we should have a screen name.
304 sn = aim_gettlv_str(tlvlist, 0x0001, 1);
305 strncpy(sess->logininfo.screen_name, sn, strlen(sn));
309 * Check for an error code. If so, we should also
312 if (aim_gettlv(tlvlist, 0x0008, 1)) {
313 struct aim_tlv_t *errtlv;
314 errtlv = aim_gettlv(tlvlist, 0x0008, 1);
315 sess->logininfo.errorcode = aimutil_get16(errtlv->value);
316 sess->logininfo.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1);
319 * If we have both an IP number (0x0005) and a cookie (0x0006),
320 * then the login was successful.
322 else if (aim_gettlv(tlvlist, 0x0005, 1) && aim_gettlv(tlvlist, 0x0006, 1)
323 /*aim_gettlv(tlvlist, 0x0006, 1)->length*/) {
324 struct aim_tlv_t *tmptlv;
327 * IP address of BOS server.
329 sess->logininfo.BOSIP = aim_gettlv_str(tlvlist, 0x0005, 1);
332 * Authorization Cookie
334 tmptlv = aim_gettlv(tlvlist, 0x0006, 1);
335 memcpy(sess->logininfo.cookie, tmptlv->value, AIM_COOKIELEN);
338 * The email address attached to this account
339 * Not available for ICQ logins.
341 if (aim_gettlv(tlvlist, 0x0011, 1))
342 sess->logininfo.email = aim_gettlv_str(tlvlist, 0x0011, 1);
345 * The registration status. (Not real sure what it means.)
346 * Not available for ICQ logins.
348 if ((tmptlv = aim_gettlv(tlvlist, 0x0013, 1)))
349 sess->logininfo.regstatus = aimutil_get16(tmptlv->value);
353 userfunc = aim_callhandler(command->conn, 0x0017, 0x0003);
356 ret = userfunc(sess, command);
358 aim_freetlvchain(&tlvlist);
360 if (sess->logininfo.BOSIP) {
361 free(sess->logininfo.BOSIP);
362 sess->logininfo.BOSIP = NULL;
364 if (sess->logininfo.email) {
365 free(sess->logininfo.email);
366 sess->logininfo.email = NULL;
368 if (sess->logininfo.errorurl) {
369 free(sess->logininfo.errorurl);
370 sess->logininfo.errorurl = NULL;
377 * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed
378 * by only its length in a two byte word.
380 * Calls the client, which should then use the value to call aim_send_login.
383 faim_internal int aim_authkeyparse(struct aim_session_t *sess, struct command_rx_struct *command)
388 rxcallback_t userfunc;
390 keylen = aimutil_get16(command->data+10);
391 if (!(key = malloc(keylen+1)))
393 memcpy(key, command->data+12, keylen);
396 if ((userfunc = aim_callhandler(command->conn, 0x0017, 0x0007)))
397 ret = userfunc(sess, command, (char *)key);
405 * Generate an authorization response.
407 * You probably don't want this unless you're writing an AIM server.
410 faim_export unsigned long aim_sendauthresp(struct aim_session_t *sess,
411 struct aim_conn_t *conn,
412 char *sn, char *bosip,
413 char *cookie, char *email,
416 struct command_tx_struct *tx;
417 struct aim_tlvlist_t *tlvlist = NULL;
419 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0004, conn, 1152)))
425 aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn));
427 aim_addtlvtochain_str(&tlvlist, 0x0001, sess->logininfo.screen_name, strlen(sess->logininfo.screen_name));
429 if (sess->logininfo.errorcode) {
430 aim_addtlvtochain16(&tlvlist, 0x0008, sess->logininfo.errorcode);
431 aim_addtlvtochain_str(&tlvlist, 0x0004, sess->logininfo.errorurl, strlen(sess->logininfo.errorurl));
433 aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip));
434 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
435 aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email));
436 aim_addtlvtochain16(&tlvlist, 0x0013, (unsigned short)regstatus);
439 tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist);
441 return aim_tx_enqueue(sess, tx);
445 * Generate a random cookie. (Non-client use only)
447 faim_export int aim_gencookie(unsigned char *buf)
453 for (i=0; i < AIM_COOKIELEN; i++)
454 buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0));
460 * Send Server Ready. (Non-client)
462 faim_export int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn)
464 struct command_tx_struct *tx;
467 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+0x22)))
472 i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++);
474 i += aimutil_put16(tx->data+i, 0x0001);
475 i += aimutil_put16(tx->data+i, 0x0002);
476 i += aimutil_put16(tx->data+i, 0x0003);
477 i += aimutil_put16(tx->data+i, 0x0004);
478 i += aimutil_put16(tx->data+i, 0x0006);
479 i += aimutil_put16(tx->data+i, 0x0008);
480 i += aimutil_put16(tx->data+i, 0x0009);
481 i += aimutil_put16(tx->data+i, 0x000a);
482 i += aimutil_put16(tx->data+i, 0x000b);
483 i += aimutil_put16(tx->data+i, 0x000c);
484 i += aimutil_put16(tx->data+i, 0x0013);
485 i += aimutil_put16(tx->data+i, 0x0015);
489 return aim_tx_enqueue(sess, tx);
494 * Send service redirect. (Non-Client)
496 faim_export unsigned long aim_sendredirect(struct aim_session_t *sess,
497 struct aim_conn_t *conn,
498 unsigned short servid,
502 struct command_tx_struct *tx;
503 struct aim_tlvlist_t *tlvlist = NULL;
506 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
511 i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000);
513 aim_addtlvtochain16(&tlvlist, 0x000d, servid);
514 aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip));
515 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
517 tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i;
518 aim_freetlvchain(&tlvlist);
521 return aim_tx_enqueue(sess, tx);