/* * conn.c * * Does all this gloriously nifty connection handling stuff... * */ #define FAIM_INTERNAL #define FAIM_NEED_CONN_INTERNAL #include #ifndef _WIN32 #include #include #include #endif #ifdef _WIN32 #include "win32dep.h" #endif /* * In OSCAR, every connection has a set of SNAC groups associated * with it. These are the groups that you can send over this connection * without being guarenteed a "Not supported" SNAC error. * * The grand theory of things says that these associations transcend * what libfaim calls "connection types" (conn->type). You can probably * see the elegance here, but since I want to revel in it for a bit, you * get to hear it all spelled out. * * So let us say that you have your core BOS connection running. One * of your modules has just given you a SNAC of the group 0x0004 to send * you. Maybe an IM destined for some twit in Greenland. So you start * at the top of your connection list, looking for a connection that * claims to support group 0x0004. You find one. Why, that neat BOS * connection of yours can do that. So you send it on its way. * * Now, say, that fellow from Greenland has friends and they all want to * meet up with you in a lame chat room. This has landed you a SNAC * in the family 0x000e and you have to admit you're a bit lost. You've * searched your connection list for someone who wants to make your life * easy and deliver this SNAC for you, but there isn't one there. * * Here comes the good bit. Without even letting anyone know, particularly * the module that decided to send this SNAC, and definitly not that twit * in Greenland, you send out a service request. In this request, you have * marked the need for a connection supporting group 0x000e. A few seconds * later, you receive a service redirect with an IP address and a cookie in * it. Great, you say. Now I have something to do. Off you go, making * that connection. One of the first things you get from this new server * is a message saying that indeed it does support the group you were looking * for. So you continue and send rate confirmation and all that. * * Then you remember you had that SNAC to send, and now you have a means to * do it, and you do, and everyone is happy. Except the Greenlander, who is * still stuck in the bitter cold. * * Oh, and this is useful for building the Migration SNACs, too. In the * future, this may help convince me to implement rate limit mitigation * for real. We'll see. * * Just to make me look better, I'll say that I've known about this great * scheme for quite some time now. But I still haven't convinced myself * to make libfaim work that way. It would take a fair amount of effort, * and probably some client API changes as well. (Whenever I don't want * to do something, I just say it would change the client API. Then I * instantly have a couple of supporters of not doing it.) * * Generally, addgroup is only called by the internal handling of the * server ready SNAC. So if you want to do something before that, you'll * have to be more creative. That is done rather early, though, so I don't * think you have to worry about it. Unless you're me. I care deeply * about such inane things. * */ faim_internal void aim_conn_addgroup(aim_conn_t *conn, fu16_t group) { aim_conn_inside_t *ins = (aim_conn_inside_t *)conn->inside; struct snacgroup *sg; if (!(sg = malloc(sizeof(struct snacgroup)))) return; faimdprintf(aim_conn_getsess(conn), 1, "adding group 0x%04x\n", group); sg->group = group; sg->next = ins->groups; ins->groups = sg; return; } faim_export aim_conn_t *aim_conn_findbygroup(aim_session_t *sess, fu16_t group) { aim_conn_t *cur; for (cur = sess->connlist; cur; cur = cur->next) { aim_conn_inside_t *ins = (aim_conn_inside_t *)cur->inside; struct snacgroup *sg; for (sg = ins->groups; sg; sg = sg->next) { if (sg->group == group) return cur; } } return NULL; } static void connkill_snacgroups(struct snacgroup **head) { struct snacgroup *sg; for (sg = *head; sg; ) { struct snacgroup *tmp; tmp = sg->next; free(sg); sg = tmp; } *head = NULL; return; } static void connkill_rates(struct rateclass **head) { struct rateclass *rc; for (rc = *head; rc; ) { struct rateclass *tmp; struct snacpair *sp; tmp = rc->next; for (sp = rc->members; sp; ) { struct snacpair *tmpsp; tmpsp = sp->next; free(sp); sp = tmpsp; } free(rc); rc = tmp; } *head = NULL; return; } static void connkill_real(aim_session_t *sess, aim_conn_t **deadconn) { aim_rxqueue_cleanbyconn(sess, *deadconn); aim_tx_cleanqueue(sess, *deadconn); if ((*deadconn)->fd != -1) aim_conn_close(*deadconn); /* * XXX ->priv should never be touched by the library. I know * it used to be, but I'm getting rid of all that. Use * ->internal instead. */ if ((*deadconn)->priv) free((*deadconn)->priv); /* * This will free ->internal if it necessary... */ if ((*deadconn)->type == AIM_CONN_TYPE_CHAT) aim_conn_kill_chat(sess, *deadconn); if ((*deadconn)->inside) { aim_conn_inside_t *inside = (aim_conn_inside_t *)(*deadconn)->inside; connkill_snacgroups(&inside->groups); connkill_rates(&inside->rates); free(inside); } free(*deadconn); *deadconn = NULL; return; } /** * Clears out connection list, killing remaining connections. * * @param sess Session to be cleared */ static void aim_connrst(aim_session_t *sess) { if (sess->connlist) { aim_conn_t *cur = sess->connlist, *tmp; while (cur) { tmp = cur->next; aim_conn_close(cur); connkill_real(sess, &cur); cur = tmp; } } sess->connlist = NULL; return; } /** * Reset a connection to default values. * Initializes and/or resets a connection structure. * * @param deadconn Connection to be reset */ static void aim_conn_init(aim_conn_t *deadconn) { if (!deadconn) return; deadconn->fd = -1; deadconn->subtype = -1; deadconn->type = -1; deadconn->seqnum = 0; deadconn->lastactivity = 0; deadconn->forcedlatency = 0; deadconn->handlerlist = NULL; deadconn->priv = NULL; memset(deadconn->inside, 0, sizeof(aim_conn_inside_t)); return; } /** * aim_conn_getnext - Gets a new connection structure. * @sess: Session * * Allocate a new empty connection structure. * */ static aim_conn_t *aim_conn_getnext(aim_session_t *sess) { aim_conn_t *newconn; if (!(newconn = malloc(sizeof(aim_conn_t)))) return NULL; memset(newconn, 0, sizeof(aim_conn_t)); if (!(newconn->inside = malloc(sizeof(aim_conn_inside_t)))) { free(newconn); return NULL; } memset(newconn->inside, 0, sizeof(aim_conn_inside_t)); aim_conn_init(newconn); newconn->next = sess->connlist; sess->connlist = newconn; return newconn; } /** * aim_conn_kill - Close and free a connection. * @sess: Session for the connection * @deadconn: Connection to be freed * * Close, clear, and free a connection structure. Should never be * called from within libfaim. * */ faim_export void aim_conn_kill(aim_session_t *sess, aim_conn_t **deadconn) { aim_conn_t *cur, **prev; if (!deadconn || !*deadconn) return; for (prev = &sess->connlist; (cur = *prev); ) { if (cur == *deadconn) { *prev = cur->next; break; } prev = &cur->next; } if (!cur) return; /* oops */ connkill_real(sess, &cur); return; } /** * aim_conn_close - Close a connection * @deadconn: Connection to close * * Close (but not free) a connection. * * This leaves everything untouched except for clearing the * handler list and setting the fd to -1 (used to recognize * dead connections). It will also remove cookies if necessary. * */ faim_export void aim_conn_close(aim_conn_t *deadconn) { aim_rxcallback_t userfunc; if (deadconn->fd >= 3) close(deadconn->fd); deadconn->fd = -1; if ((userfunc = aim_callhandler(deadconn->sessv, deadconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNDEAD))) userfunc(deadconn->sessv, NULL, deadconn); if (deadconn->handlerlist) aim_clearhandlers(deadconn); return; } /** * aim_getconn_type - Find a connection of a specific type * @sess: Session to search * @type: Type of connection to look for * * Searches for a connection of the specified type in the * specified session. Returns the first connection of that * type found. * * XXX except for RENDEZVOUS, all uses of this should be removed and * use aim_conn_findbygroup() instead. */ faim_export aim_conn_t *aim_getconn_type(aim_session_t *sess, int type) { aim_conn_t *cur; for (cur = sess->connlist; cur; cur = cur->next) { if ((cur->type == type) && !(cur->status & AIM_CONN_STATUS_INPROGRESS)) break; } return cur; } faim_export aim_conn_t *aim_getconn_type_all(aim_session_t *sess, int type) { aim_conn_t *cur; for (cur = sess->connlist; cur; cur = cur->next) { if (cur->type == type) break; } return cur; } /* If you pass -1 for the fd, you'll get what you ask for. Gibberish. */ faim_export aim_conn_t *aim_getconn_fd(aim_session_t *sess, int fd) { aim_conn_t *cur; for (cur = sess->connlist; cur; cur = cur->next) { if (cur->fd == fd) break; } return cur; } /** * aim_proxyconnect - An extrememly quick and dirty SOCKS5 interface. * @sess: Session to connect * @host: Host to connect to * @port: Port to connect to * @statusret: Return value of the connection * * Attempts to connect to the specified host via the configured * proxy settings, if present. If no proxy is configured for * this session, the connection is done directly. * * XXX this is really awful. * */ static int aim_proxyconnect(aim_session_t *sess, const char *host, fu16_t port, fu32_t *statusret) { int fd = -1; if (strlen(sess->socksproxy.server)) { /* connecting via proxy */ int i; unsigned char buf[512]; struct sockaddr_in sa; struct hostent *hp; char *proxy; unsigned short proxyport = 1080; for(i=0;i<(int)strlen(sess->socksproxy.server);i++) { if (sess->socksproxy.server[i] == ':') { proxyport = atoi(&(sess->socksproxy.server[i+1])); break; } } proxy = (char *)malloc(i+1); strncpy(proxy, sess->socksproxy.server, i); proxy[i] = '\0'; if (!(hp = gethostbyname(proxy))) { faimdprintf(sess, 0, "proxyconnect: unable to resolve proxy name\n"); *statusret = (h_errno | AIM_CONN_STATUS_RESOLVERR); return -1; } free(proxy); memset(&sa.sin_zero, 0, 8); sa.sin_port = htons(proxyport); memcpy(&sa.sin_addr, hp->h_addr, hp->h_length); sa.sin_family = hp->h_addrtype; fd = socket(hp->h_addrtype, SOCK_STREAM, 0); if (connect(fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) < 0) { faimdprintf(sess, 0, "proxyconnect: unable to connect to proxy\n"); close(fd); return -1; } i = 0; buf[0] = 0x05; /* SOCKS version 5 */ if (strlen(sess->socksproxy.username)) { buf[1] = 0x02; /* two methods */ buf[2] = 0x00; /* no authentication */ buf[3] = 0x02; /* username/password authentication */ i = 4; } else { buf[1] = 0x01; buf[2] = 0x00; i = 3; } if (write(fd, buf, i) < i) { *statusret = errno; close(fd); return -1; } if (read(fd, buf, 2) < 2) { *statusret = errno; close(fd); return -1; } if ((buf[0] != 0x05) || (buf[1] == 0xff)) { *statusret = EINVAL; close(fd); return -1; } /* check if we're doing username authentication */ if (buf[1] == 0x02) { i = aimutil_put8(buf, 0x01); /* version 1 */ i += aimutil_put8(buf+i, strlen(sess->socksproxy.username)); i += aimutil_putstr(buf+i, sess->socksproxy.username, strlen(sess->socksproxy.username)); i += aimutil_put8(buf+i, strlen(sess->socksproxy.password)); i += aimutil_putstr(buf+i, sess->socksproxy.password, strlen(sess->socksproxy.password)); if (write(fd, buf, i) < i) { *statusret = errno; close(fd); return -1; } if (read(fd, buf, 2) < 2) { *statusret = errno; close(fd); return -1; } if ((buf[0] != 0x01) || (buf[1] != 0x00)) { *statusret = EINVAL; close(fd); return -1; } } i = aimutil_put8(buf, 0x05); i += aimutil_put8(buf+i, 0x01); /* CONNECT */ i += aimutil_put8(buf+i, 0x00); /* reserved */ i += aimutil_put8(buf+i, 0x03); /* address type: host name */ i += aimutil_put8(buf+i, strlen(host)); i += aimutil_putstr(buf+i, host, strlen(host)); i += aimutil_put16(buf+i, port); if (write(fd, buf, i) < i) { *statusret = errno; close(fd); return -1; } if (read(fd, buf, 10) < 10) { *statusret = errno; close(fd); return -1; } if ((buf[0] != 0x05) || (buf[1] != 0x00)) { *statusret = EINVAL; close(fd); return -1; } } else { /* connecting directly */ struct sockaddr_in sa; struct hostent *hp; if (!(hp = gethostbyname(host))) { *statusret = (h_errno | AIM_CONN_STATUS_RESOLVERR); return -1; } memset(&sa, 0, sizeof(struct sockaddr_in)); sa.sin_port = htons(port); memcpy(&sa.sin_addr, hp->h_addr, hp->h_length); sa.sin_family = hp->h_addrtype; fd = socket(hp->h_addrtype, SOCK_STREAM, 0); if (sess->nonblocking) fcntl(fd, F_SETFL, O_NONBLOCK); /* XXX save flags */ if (connect(fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) < 0) { if (sess->nonblocking) { if ((errno == EINPROGRESS) || (errno == EINTR)) { if (statusret) *statusret |= AIM_CONN_STATUS_INPROGRESS; return fd; } } close(fd); fd = -1; } } return fd; } /** * aim_cloneconn - clone an aim_conn_t * @sess: session containing parent * @src: connection to clone * * A new connection is allocated, and the values are filled in * appropriately. Note that this function sets the new connnection's * ->priv pointer to be equal to that of its parent: only the pointer * is copied, not the data it points to. * * This function returns a pointer to the new aim_conn_t, or %NULL on * error */ faim_internal aim_conn_t *aim_cloneconn(aim_session_t *sess, aim_conn_t *src) { aim_conn_t *conn; if (!(conn = aim_conn_getnext(sess))) return NULL; conn->fd = src->fd; conn->type = src->type; conn->subtype = src->subtype; conn->seqnum = src->seqnum; conn->priv = src->priv; conn->internal = src->internal; conn->lastactivity = src->lastactivity; conn->forcedlatency = src->forcedlatency; conn->sessv = src->sessv; aim_clonehandlers(sess, conn, src); if (src->inside) { /* * XXX should clone this section as well, but since currently * this function only gets called for some of that rendezvous * crap, and not on SNAC connections, its probably okay for * now. * */ } return conn; } /** * aim_newconn - Open a new connection * @sess: Session to create connection in * @type: Type of connection to create * @dest: Host to connect to (in "host:port" syntax) * * Opens a new connection to the specified dest host of specified * type, using the proxy settings if available. If @host is %NULL, * the connection is allocated and returned, but no connection * is made. * * FIXME: Return errors in a more sane way. * */ faim_export aim_conn_t *aim_newconn(aim_session_t *sess, int type, const char *dest) { aim_conn_t *connstruct; fu16_t port = FAIM_LOGIN_PORT; char *host; int i, ret; if (!(connstruct = aim_conn_getnext(sess))) return NULL; connstruct->sessv = (void *)sess; connstruct->type = type; if (!dest) { /* just allocate a struct */ connstruct->fd = -1; connstruct->status = 0; return connstruct; } /* * As of 23 Jul 1999, AOL now sends the port number, preceded by a * colon, in the BOS redirect. This fatally breaks all previous * libfaims. Bad, bad AOL. * * We put this here to catch every case. * */ for(i = 0; i < (int)strlen(dest); i++) { if (dest[i] == ':') { port = atoi(&(dest[i+1])); break; } } host = (char *)malloc(i+1); strncpy(host, dest, i); host[i] = '\0'; if ((ret = aim_proxyconnect(sess, host, port, &connstruct->status)) < 0) { connstruct->fd = -1; connstruct->status = (errno | AIM_CONN_STATUS_CONNERR); free(host); return connstruct; } else connstruct->fd = ret; free(host); return connstruct; } /** * aim_conngetmaxfd - Return the highest valued file discriptor in session * @sess: Session to search * * Returns the highest valued filed descriptor of all open * connections in @sess. * */ faim_export int aim_conngetmaxfd(aim_session_t *sess) { int j; aim_conn_t *cur; for (cur = sess->connlist, j = 0; cur; cur = cur->next) { if (cur->fd > j) j = cur->fd; } return j; } /** * aim_conn_in_sess - Predicate to test the precense of a connection in a sess * @sess: Session to look in * @conn: Connection to look for * * Searches @sess for the passed connection. Returns 1 if its present, * zero otherwise. * */ faim_export int aim_conn_in_sess(aim_session_t *sess, aim_conn_t *conn) { aim_conn_t *cur; for (cur = sess->connlist; cur; cur = cur->next) { if (cur == conn) return 1; } return 0; } /** * aim_select - Wait for a socket with data or timeout * @sess: Session to wait on * @timeout: How long to wait * @status: Return status * * Waits for a socket with data or for timeout, whichever comes first. * See select(2). * * Return codes in *status: * -1 error in select() (%NULL returned) * 0 no events pending (%NULL returned) * 1 outgoing data pending (%NULL returned) * 2 incoming data pending (connection with pending data returned) * */ faim_export aim_conn_t *aim_select(aim_session_t *sess, struct timeval *timeout, int *status) { aim_conn_t *cur; fd_set fds, wfds; int maxfd, i, haveconnecting = 0; if (!sess->connlist) { *status = -1; return NULL; } FD_ZERO(&fds); FD_ZERO(&wfds); for (cur = sess->connlist, maxfd = 0; cur; cur = cur->next) { if (cur->fd == -1) { /* don't let invalid/dead connections sit around */ *status = 2; return cur; } else if (cur->status & AIM_CONN_STATUS_INPROGRESS) { FD_SET(cur->fd, &wfds); haveconnecting++; } FD_SET(cur->fd, &fds); if (cur->fd > maxfd) maxfd = cur->fd; } /* * If we have data waiting to be sent, return * * We have to not do this if theres at least one * connection thats still connecting, since that connection * may have queued data and this return would prevent * the connection from ever completing! This is a major * inadequacy of the libfaim way of doing things. It means * that nothing can transmit as long as there's connecting * sockets. Evil. * * But its still better than having blocking connects. * */ if (!haveconnecting && sess->queue_outgoing) { *status = 1; return NULL; } if ((i = select(maxfd+1, &fds, &wfds, NULL, timeout))>=1) { for (cur = sess->connlist; cur; cur = cur->next) { if ((FD_ISSET(cur->fd, &fds)) || ((cur->status & AIM_CONN_STATUS_INPROGRESS) && FD_ISSET(cur->fd, &wfds))) { *status = 2; return cur; } } *status = 0; /* shouldn't happen */ } else if ((i == -1) && (errno == EINTR)) /* treat interrupts as a timeout */ *status = 0; else *status = i; /* can be 0 or -1 */ return NULL; /* no waiting or error, return */ } /** * aim_conn_setlatency - Set a forced latency value for connection * @conn: Conn to set latency for * @newval: Number of seconds to force between transmits * * Causes @newval seconds to be spent between transmits on a connection. * * This is my lame attempt at overcoming not understanding the rate * limiting. * * XXX: This should really be replaced with something that scales and * backs off like the real rate limiting does. * */ faim_export int aim_conn_setlatency(aim_conn_t *conn, int newval) { if (!conn) return -1; conn->forcedlatency = newval; conn->lastactivity = 0; /* reset this just to make sure */ return 0; } /** * aim_setupproxy - Configure a proxy for this session * @sess: Session to set proxy for * @server: SOCKS server * @username: SOCKS username * @password: SOCKS password * * Call this with your SOCKS5 proxy server parameters before * the first call to aim_newconn(). If called with all %NULL * args, it will clear out a previously set proxy. * * Set username and password to %NULL if not applicable. * */ faim_export void aim_setupproxy(aim_session_t *sess, const char *server, const char *username, const char *password) { /* clear out the proxy info */ if (!server || !strlen(server)) { memset(sess->socksproxy.server, 0, sizeof(sess->socksproxy.server)); memset(sess->socksproxy.username, 0, sizeof(sess->socksproxy.username)); memset(sess->socksproxy.password, 0, sizeof(sess->socksproxy.password)); return; } strncpy(sess->socksproxy.server, server, sizeof(sess->socksproxy.server)); if (username && strlen(username)) strncpy(sess->socksproxy.username, username, sizeof(sess->socksproxy.username)); if (password && strlen(password)) strncpy(sess->socksproxy.password, password, sizeof(sess->socksproxy.password)); return; } static void defaultdebugcb(aim_session_t *sess, int level, const char *format, va_list va) { vfprintf(stderr, format, va); return; } /** * Initializes a session structure by setting the initial values * stuff in the aim_session_t struct. * * @param sess Session to initialize. * @param nonblocking Set to true if you want connections to be non-blocking. * @param debuglevel Level of debugging output (zero is least). */ faim_export void aim_session_init(aim_session_t *sess, bool nonblocking, int debuglevel) { if (!sess) return; memset(sess, 0, sizeof(aim_session_t)); aim_connrst(sess); sess->queue_outgoing = NULL; sess->queue_incoming = NULL; aim_initsnachash(sess); sess->msgcookies = NULL; sess->nonblocking = nonblocking; sess->debug = debuglevel; sess->debugcb = defaultdebugcb; sess->modlistv = NULL; sess->snacid_next = 0x00000001; sess->locate.userinfo = NULL; sess->locate.torequest = NULL; sess->locate.requested = NULL; sess->locate.waiting_for_response = FALSE; sess->ssi.received_data = 0; sess->ssi.numitems = 0; sess->ssi.official = NULL; sess->ssi.local = NULL; sess->ssi.pending = NULL; sess->ssi.timestamp = (time_t)0; sess->ssi.waiting_for_ack = 0; sess->icq_info = NULL; sess->authinfo = NULL; sess->emailinfo = NULL; sess->oft_info = NULL; /* * This must always be set. Default to the queue-based * version for back-compatibility. */ aim_tx_setenqueue(sess, AIM_TX_QUEUED, NULL); /* * Register all the modules for this session... */ aim__registermodule(sess, misc_modfirst); /* load the catch-all first */ aim__registermodule(sess, service_modfirst); aim__registermodule(sess, locate_modfirst); aim__registermodule(sess, buddylist_modfirst); aim__registermodule(sess, msg_modfirst); aim__registermodule(sess, adverts_modfirst); aim__registermodule(sess, invite_modfirst); aim__registermodule(sess, admin_modfirst); aim__registermodule(sess, popups_modfirst); aim__registermodule(sess, bos_modfirst); aim__registermodule(sess, search_modfirst); aim__registermodule(sess, stats_modfirst); aim__registermodule(sess, translate_modfirst); aim__registermodule(sess, chatnav_modfirst); aim__registermodule(sess, chat_modfirst); aim__registermodule(sess, odir_modfirst); aim__registermodule(sess, bart_modfirst); /* missing 0x11 - 0x12 */ aim__registermodule(sess, ssi_modfirst); /* missing 0x14 */ aim__registermodule(sess, icq_modfirst); /* XXX - Make sure this isn't sent for AIM */ /* missing 0x16 */ aim__registermodule(sess, auth_modfirst); aim__registermodule(sess, email_modfirst); return; } /** * aim_session_kill - Deallocate a session * @sess: Session to kill * */ faim_export void aim_session_kill(aim_session_t *sess) { aim_cleansnacs(sess, -1); aim_logoff(sess); aim__shutdownmodules(sess); return; } /** * aim_setdebuggingcb - Set the function to call when outputting debugging info * @sess: Session to change * @cb: Function to call * * The function specified is called whenever faimdprintf() is used within * libfaim, and the session's debugging level is greater tha nor equal to * the value faimdprintf was called with. * */ faim_export int aim_setdebuggingcb(aim_session_t *sess, faim_debugging_callback_t cb) { if (!sess) return -1; sess->debugcb = cb; return 0; } /** * aim_conn_isconnecting - Determine if a connection is connecting * @conn: Connection to examine * * Returns nonzero if the connection is in the process of * connecting (or if it just completed and aim_conn_completeconnect() * has yet to be called on it). * */ faim_export int aim_conn_isconnecting(aim_conn_t *conn) { if (!conn) return 0; return !!(conn->status & AIM_CONN_STATUS_INPROGRESS); } /* * XXX this is nearly as ugly as proxyconnect(). */ faim_export int aim_conn_completeconnect(aim_session_t *sess, aim_conn_t *conn) { aim_rxcallback_t userfunc; if (!conn || (conn->fd == -1)) return -1; if (!(conn->status & AIM_CONN_STATUS_INPROGRESS)) return -1; fcntl(conn->fd, F_SETFL, 0); conn->status &= ~AIM_CONN_STATUS_INPROGRESS; if ((userfunc = aim_callhandler(sess, conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNCOMPLETE))) userfunc(sess, NULL, conn); /* Flush out the queues if there was something waiting for this conn */ aim_tx_flushqueue(sess); return 0; } faim_export aim_session_t *aim_conn_getsess(aim_conn_t *conn) { if (!conn) return NULL; return (aim_session_t *)conn->sessv; } /* * aim_logoff() * * Closes -ALL- open connections. * */ faim_export int aim_logoff(aim_session_t *sess) { aim_connrst(sess); /* in case we want to connect again */ return 0; } /* * aim_flap_nop() * * No-op. WinAIM 4.x sends these _every minute_ to keep * the connection alive. */ faim_export int aim_flap_nop(aim_session_t *sess, aim_conn_t *conn) { aim_frame_t *fr; if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x05, 0))) return -ENOMEM; aim_tx_enqueue(sess, fr); /* clean out SNACs over 60sec old */ aim_cleansnacs(sess, 60); return 0; }