5 * Does all this gloriously nifty connection handling stuff...
12 * Clears out connection list, killing remaining connections.
14 void aim_connrst(struct aim_session_t *sess)
16 faim_mutex_init(&sess->connlistlock, NULL);
18 struct aim_conn_t *cur = sess->connlist, *tmp;
27 sess->connlist = NULL;
32 * Gets a new connection structure.
34 struct aim_conn_t *aim_conn_getnext(struct aim_session_t *sess)
36 struct aim_conn_t *newconn, *cur;
38 if (!(newconn = malloc(sizeof(struct aim_conn_t))))
41 memset(newconn, 0, sizeof(struct aim_conn_t));
42 aim_conn_close(newconn);
45 faim_mutex_lock(&sess->connlistlock);
46 if (sess->connlist == NULL)
47 sess->connlist = newconn;
49 for (cur = sess->connlist; cur->next; cur = cur->next)
53 faim_mutex_unlock(&sess->connlistlock);
58 static void aim_conn_init(struct aim_conn_t *deadconn)
64 deadconn->subtype = -1;
67 deadconn->lastactivity = 0;
68 deadconn->forcedlatency = 0;
69 deadconn->handlerlist = NULL;
70 deadconn->priv = NULL;
71 faim_mutex_init(&deadconn->active, NULL);
72 faim_mutex_init(&deadconn->seqnum_lock, NULL);
77 void aim_conn_kill(struct aim_session_t *sess, struct aim_conn_t **deadconn)
79 struct aim_conn_t *cur;
81 if (!deadconn || !*deadconn)
84 faim_mutex_lock(&sess->connlistlock);
85 if (sess->connlist == NULL)
87 else if (sess->connlist->next == NULL) {
88 if (sess->connlist == *deadconn)
89 sess->connlist = NULL;
93 if (cur->next == *deadconn) {
94 cur->next = cur->next->next;
100 faim_mutex_unlock(&sess->connlistlock);
102 /* XXX: do we need this for txqueue too? */
103 aim_rxqueue_cleanbyconn(sess, *deadconn);
105 aim_conn_init(*deadconn);
112 void aim_conn_close(struct aim_conn_t *deadconn)
114 int typesav = -1, subtypesav = -1;
115 void *privsav = NULL;
117 faim_mutex_destroy(&deadconn->active);
118 faim_mutex_destroy(&deadconn->seqnum_lock);
119 if (deadconn->fd >= 3)
121 if (deadconn->handlerlist)
122 aim_clearhandlers(deadconn);
124 typesav = deadconn->type;
125 subtypesav = deadconn->subtype;
127 if (deadconn->priv && (deadconn->type != AIM_CONN_TYPE_RENDEZVOUS)) {
128 free(deadconn->priv);
129 deadconn->priv = NULL;
131 privsav = deadconn->priv;
133 aim_conn_init(deadconn);
135 deadconn->type = typesav;
136 deadconn->subtype = subtypesav;
137 deadconn->priv = privsav;
142 struct aim_conn_t *aim_getconn_type(struct aim_session_t *sess,
145 struct aim_conn_t *cur;
147 faim_mutex_lock(&sess->connlistlock);
148 for (cur = sess->connlist; cur; cur = cur->next) {
149 if (cur->type == type)
152 faim_mutex_unlock(&sess->connlistlock);
157 * aim_newconn(type, dest)
159 * Opens a new connection to the specified dest host of type type.
161 * TODO: fix for proxies
162 * FIXME: Return errors in a more sane way.
165 struct aim_conn_t *aim_newconn(struct aim_session_t *sess,
166 int type, char *dest)
168 struct aim_conn_t *connstruct;
170 struct sockaddr_in sa;
172 u_short port = FAIM_LOGIN_PORT;
176 if ((connstruct=aim_conn_getnext(sess))==NULL)
179 faim_mutex_lock(&connstruct->active);
181 connstruct->type = type;
183 if (!dest) { /* just allocate a struct */
185 connstruct->status = 0;
186 faim_mutex_unlock(&connstruct->active);
191 * As of 23 Jul 1999, AOL now sends the port number, preceded by a
192 * colon, in the BOS redirect. This fatally breaks all previous
193 * libfaims. Bad, bad AOL.
195 * We put this here to catch every case.
199 for(i=0;i<strlen(dest);i++) {
200 if (dest[i] == ':') {
201 port = atoi(&(dest[i+1]));
205 host = (char *)malloc(i+1);
206 strncpy(host, dest, i);
209 hp = gethostbyname(host);
213 connstruct->status = (h_errno | AIM_CONN_STATUS_RESOLVERR);
214 faim_mutex_unlock(&connstruct->active);
218 memset(&sa.sin_zero, 0, 8);
219 sa.sin_port = htons(port);
220 memcpy(&sa.sin_addr, hp->h_addr, hp->h_length);
221 sa.sin_family = hp->h_addrtype;
223 connstruct->fd = socket(hp->h_addrtype, SOCK_STREAM, 0);
224 ret = connect(connstruct->fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in));
227 connstruct->status = (errno | AIM_CONN_STATUS_CONNERR);
228 faim_mutex_unlock(&connstruct->active);
232 faim_mutex_unlock(&connstruct->active);
237 int aim_conngetmaxfd(struct aim_session_t *sess)
240 struct aim_conn_t *cur;
242 faim_mutex_lock(&sess->connlistlock);
243 for (cur = sess->connlist; cur; cur = cur->next) {
247 faim_mutex_unlock(&sess->connlistlock);
252 int aim_countconn(struct aim_session_t *sess)
255 struct aim_conn_t *cur;
257 faim_mutex_lock(&sess->connlistlock);
258 for (cur = sess->connlist; cur; cur = cur->next)
260 faim_mutex_unlock(&sess->connlistlock);
266 * aim_select(timeout)
268 * Waits for a socket with data or for timeout, whichever comes first.
271 * Return codes in *status:
272 * -1 error in select() (NULL returned)
273 * 0 no events pending (NULL returned)
274 * 1 outgoing data pending (NULL returned)
275 * 2 incoming data pending (connection with pending data returned)
277 * XXX: we could probably stand to do a little courser locking here.
280 struct aim_conn_t *aim_select(struct aim_session_t *sess,
281 struct timeval *timeout, int *status)
283 struct aim_conn_t *cur;
288 faim_mutex_lock(&sess->connlistlock);
289 if (sess->connlist == NULL) {
290 faim_mutex_unlock(&sess->connlistlock);
294 faim_mutex_unlock(&sess->connlistlock);
297 * If we have data waiting to be sent, return immediatly
299 if (sess->queue_outgoing != NULL) {
307 faim_mutex_lock(&sess->connlistlock);
308 for (cur = sess->connlist; cur; cur = cur->next) {
309 FD_SET(cur->fd, &fds);
313 faim_mutex_unlock(&sess->connlistlock);
315 if ((i = select(maxfd+1, &fds, NULL, NULL, timeout))>=1) {
316 faim_mutex_lock(&sess->connlistlock);
317 for (cur = sess->connlist; cur; cur = cur->next) {
318 if (FD_ISSET(cur->fd, &fds)) {
320 faim_mutex_unlock(&sess->connlistlock);
326 faim_mutex_unlock(&sess->connlistlock);
327 *status = i; /* may be 0 or -1 */
328 return NULL; /* no waiting or error, return */
331 int aim_conn_isready(struct aim_conn_t *conn)
334 return (conn->status & 0x0001);
338 int aim_conn_setstatus(struct aim_conn_t *conn, int status)
345 faim_mutex_lock(&conn->active);
346 val = conn->status ^= status;
347 faim_mutex_unlock(&conn->active);
351 int aim_conn_setlatency(struct aim_conn_t *conn, int newval)
356 faim_mutex_lock(&conn->active);
357 conn->forcedlatency = newval;
358 conn->lastactivity = 0; /* reset this just to make sure */
359 faim_mutex_unlock(&conn->active);
364 void aim_session_init(struct aim_session_t *sess)
369 memset(sess, 0, sizeof(struct aim_session_t));
371 sess->queue_outgoing = NULL;
372 sess->queue_incoming = NULL;
373 sess->pendingjoin = NULL;
374 sess->outstanding_snacs = NULL;
375 sess->snac_nextid = 0x00000001;
378 * This must always be set. Default to the queue-based
379 * version for back-compatibility.
381 sess->tx_enqueue = &aim_tx_enqueue__queuebased;