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);
15 * FIXME: Reimplement the TIS stuff.
17 #ifdef TIS_TELNET_PROXY
18 #include "tis_telnet_proxy.h"
21 int aim_sendconnack(struct aim_session_t *sess,
22 struct aim_conn_t *conn)
26 struct command_tx_struct *newpacket;
28 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0001, conn, 4)))
33 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
34 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0001);
37 return aim_tx_enqueue(sess, newpacket);
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).
48 int aim_request_login(struct aim_session_t *sess,
49 struct aim_conn_t *conn,
54 struct command_tx_struct *newpacket;
56 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+2+2+strlen(sn))))
61 curbyte += aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0006, 0x0000, 0x00010000);
62 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
65 return aim_tx_enqueue(sess, newpacket);
69 * send_login(int socket, char *sn, char *password)
71 * This is the initial login request packet.
73 * The password is encoded before transmition, as per
74 * encode_password(). See that function for their
75 * stupid method of doing it.
78 int aim_send_login (struct aim_session_t *sess,
79 struct aim_conn_t *conn,
80 char *sn, char *password, struct client_info_s *clientinfo,
84 md5_byte_t digest[16];
86 struct command_tx_struct *newpacket;
88 if (!clientinfo || !sn || !password)
91 if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
96 newpacket->hdr.oscar.type = 0x02;
98 curbyte = aim_putsnac(newpacket->data+curbyte, 0x0017, 0x0002, 0x0000, 0x00010000);
100 curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0001, strlen(sn), sn);
102 aim_encode_password_md5(password, key, digest);
103 curbyte+= aim_puttlv_str(newpacket->data+curbyte, 0x0025, 16, digest);
105 /* XXX is clientstring required by oscar? */
106 if (strlen(clientinfo->clientstring))
107 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x0003, strlen(clientinfo->clientstring), clientinfo->clientstring);
109 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0016, clientinfo->major2);
110 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0017, clientinfo->major);
111 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0018, clientinfo->minor);
112 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0019, clientinfo->minor2);
113 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x001a, clientinfo->build);
115 curbyte += aim_puttlv_32(newpacket->data+curbyte, 0x0014, clientinfo->unknown);
116 curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0009, 0x0015);
118 if (strlen(clientinfo->country))
119 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, strlen(clientinfo->country), clientinfo->country);
121 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000e, 2, "us");
123 if (strlen(clientinfo->lang))
124 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, strlen(clientinfo->lang), clientinfo->lang);
126 curbyte += aim_puttlv_str(newpacket->data+curbyte, 0x000f, 2, "en");
128 newpacket->commandlen = curbyte;
131 return aim_tx_enqueue(sess, newpacket);
134 static int aim_encode_password_md5(const char *password, const char *key, md5_byte_t *digest)
139 md5_append(&state, (const md5_byte_t *)key, strlen(key));
140 md5_append(&state, (const md5_byte_t *)password, strlen(password));
141 md5_append(&state, (const md5_byte_t *)AIM_MD5_STRING, strlen(AIM_MD5_STRING));
142 md5_finish(&state, (md5_byte_t *)digest);
148 * int encode_password(
149 * const char *password,
153 * This takes a const pointer to a (null terminated) string
154 * containing the unencoded password. It also gets passed
155 * an already allocated buffer to store the encoded password.
156 * This buffer should be the exact length of the password without
157 * the null. The encoded password buffer IS NOT NULL TERMINATED.
159 * The encoding_table seems to be a fixed set of values. We'll
160 * hope it doesn't change over time!
162 * NOTE: This is no longer used. Its here for historical reference.
166 static int aim_encode_password(const char *password, unsigned char *encoded)
168 u_char encoding_table[] = {
169 #if 0 /* old v1 table */
170 0xf3, 0xb3, 0x6c, 0x99,
171 0x95, 0x3f, 0xac, 0xb6,
172 0xc5, 0xfa, 0x6b, 0x63,
173 0x69, 0x6c, 0xc3, 0x9f
174 #else /* v2.1 table, also works for ICQ */
175 0xf3, 0x26, 0x81, 0xc4,
176 0x39, 0x86, 0xdb, 0x92,
177 0x71, 0xa3, 0xb9, 0xe6,
178 0x53, 0x7a, 0x95, 0x7c
184 for (i = 0; i < strlen(password); i++)
185 encoded[i] = (password[i] ^ encoding_table[i]);
192 * This is sent back as a general response to the login command.
193 * It can be either an error or a success, depending on the
194 * precense of certain TLVs.
196 * The client should check the value of logininfo->errorcode. If
197 * its nonzero, there was an error.
200 int aim_authparse(struct aim_session_t *sess,
201 struct command_rx_struct *command)
203 struct aim_tlvlist_t *tlvlist;
206 rxcallback_t userfunc = NULL;
208 memset(&sess->logininfo, 0x00, sizeof(sess->logininfo));
211 * Read block of TLVs. All further data is derived
212 * from what is parsed here.
214 * For SNAC login, there's a 17/3 SNAC header in front.
217 tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10);
220 * No matter what, we should have a screen name.
222 sn = aim_gettlv_str(tlvlist, 0x0001, 1);
223 strncpy(sess->logininfo.screen_name, sn, strlen(sn));
227 * Check for an error code. If so, we should also
230 if (aim_gettlv(tlvlist, 0x0008, 1)) {
231 struct aim_tlv_t *errtlv;
232 errtlv = aim_gettlv(tlvlist, 0x0008, 1);
233 sess->logininfo.errorcode = aimutil_get16(errtlv->value);
234 sess->logininfo.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1);
237 * If we have both an IP number (0x0005) and a cookie (0x0006),
238 * then the login was successful.
240 else if (aim_gettlv(tlvlist, 0x0005, 1) && aim_gettlv(tlvlist, 0x0006, 1)
241 /*aim_gettlv(tlvlist, 0x0006, 1)->length*/) {
242 struct aim_tlv_t *tmptlv;
245 * IP address of BOS server.
247 sess->logininfo.BOSIP = aim_gettlv_str(tlvlist, 0x0005, 1);
250 * Authorization Cookie
252 tmptlv = aim_gettlv(tlvlist, 0x0006, 1);
253 memcpy(sess->logininfo.cookie, tmptlv->value, AIM_COOKIELEN);
256 * The email address attached to this account
257 * Not available for ICQ logins.
259 if (aim_gettlv(tlvlist, 0x0011, 1))
260 sess->logininfo.email = aim_gettlv_str(tlvlist, 0x0011, 1);
263 * The registration status. (Not real sure what it means.)
264 * Not available for ICQ logins.
266 if ((tmptlv = aim_gettlv(tlvlist, 0x0013, 1)))
267 sess->logininfo.regstatus = aimutil_get16(tmptlv->value);
271 userfunc = aim_callhandler(command->conn, 0x0017, 0x0003);
274 ret = userfunc(sess, command);
276 aim_freetlvchain(&tlvlist);
278 if (sess->logininfo.BOSIP) {
279 free(sess->logininfo.BOSIP);
280 sess->logininfo.BOSIP = NULL;
282 if (sess->logininfo.email) {
283 free(sess->logininfo.email);
284 sess->logininfo.email = NULL;
286 if (sess->logininfo.errorurl) {
287 free(sess->logininfo.errorurl);
288 sess->logininfo.errorurl = NULL;
295 * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed
296 * by only its length in a two byte word.
298 * Calls the client, which should then use the value to call aim_send_login.
301 int aim_authkeyparse(struct aim_session_t *sess, struct command_rx_struct *command)
306 rxcallback_t userfunc;
308 keylen = aimutil_get16(command->data+10);
309 if (!(key = malloc(keylen+1)))
311 memcpy(key, command->data+12, keylen);
314 if ((userfunc = aim_callhandler(command->conn, 0x0017, 0x0007)))
315 ret = userfunc(sess, command, key);
323 * Generate an authorization response.
325 * You probably don't want this unless you're writing an AIM server.
328 unsigned long aim_sendauthresp(struct aim_session_t *sess,
329 struct aim_conn_t *conn,
330 char *sn, char *bosip,
331 char *cookie, char *email,
334 struct command_tx_struct *tx;
335 struct aim_tlvlist_t *tlvlist = NULL;
337 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0004, conn, 1152)))
343 aim_addtlvtochain_str(&tlvlist, 0x0001, sn, strlen(sn));
345 aim_addtlvtochain_str(&tlvlist, 0x0001, sess->logininfo.screen_name, strlen(sess->logininfo.screen_name));
347 if (sess->logininfo.errorcode) {
348 aim_addtlvtochain16(&tlvlist, 0x0008, sess->logininfo.errorcode);
349 aim_addtlvtochain_str(&tlvlist, 0x0004, sess->logininfo.errorurl, strlen(sess->logininfo.errorurl));
351 aim_addtlvtochain_str(&tlvlist, 0x0005, bosip, strlen(bosip));
352 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
353 aim_addtlvtochain_str(&tlvlist, 0x0011, email, strlen(email));
354 aim_addtlvtochain16(&tlvlist, 0x0013, regstatus);
357 tx->commandlen = aim_writetlvchain(tx->data, tx->commandlen, &tlvlist);
359 return aim_tx_enqueue(sess, tx);
363 * Generate a random cookie. (Non-client use only)
365 int aim_gencookie(unsigned char *buf)
371 for (i=0; i < AIM_COOKIELEN; i++)
372 buf[i] = 1+(int) (256.0*rand()/(RAND_MAX+0.0));
378 * Send Server Ready. (Non-client)
380 int aim_sendserverready(struct aim_session_t *sess, struct aim_conn_t *conn)
382 struct command_tx_struct *tx;
385 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+0x22)))
390 i += aim_putsnac(tx->data, 0x0001, 0x0003, 0x0000, sess->snac_nextid++);
392 i += aimutil_put16(tx->data+i, 0x0001);
393 i += aimutil_put16(tx->data+i, 0x0002);
394 i += aimutil_put16(tx->data+i, 0x0003);
395 i += aimutil_put16(tx->data+i, 0x0004);
396 i += aimutil_put16(tx->data+i, 0x0006);
397 i += aimutil_put16(tx->data+i, 0x0008);
398 i += aimutil_put16(tx->data+i, 0x0009);
399 i += aimutil_put16(tx->data+i, 0x000a);
400 i += aimutil_put16(tx->data+i, 0x000b);
401 i += aimutil_put16(tx->data+i, 0x000c);
402 i += aimutil_put16(tx->data+i, 0x0013);
403 i += aimutil_put16(tx->data+i, 0x0015);
407 return aim_tx_enqueue(sess, tx);
412 * Send service redirect. (Non-Client)
414 unsigned long aim_sendredirect(struct aim_session_t *sess,
415 struct aim_conn_t *conn,
416 unsigned short servid,
420 struct command_tx_struct *tx;
421 struct aim_tlvlist_t *tlvlist = NULL;
424 if (!(tx = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 1152)))
429 i += aim_putsnac(tx->data+i, 0x0001, 0x0005, 0x0000, 0x00000000);
431 aim_addtlvtochain16(&tlvlist, 0x000d, servid);
432 aim_addtlvtochain_str(&tlvlist, 0x0005, ip, strlen(ip));
433 aim_addtlvtochain_str(&tlvlist, 0x0006, cookie, AIM_COOKIELEN);
435 tx->commandlen = aim_writetlvchain(tx->data+i, tx->commandlen-i, &tlvlist)+i;
436 aim_freetlvchain(&tlvlist);
439 return aim_tx_enqueue(sess, tx);