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| version 1.1.2.1, 2011/11/30 00:14:42 | version 1.1.2.24, 2011/12/16 12:16:17 |
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| Line 1 | Line 1 |
| #include "global.h" | #include "global.h" |
| #include "rtlm.h" | |
| #include "utils.h" | |
| #include "mqttd.h" | |
| static inline struct tagSession * | |
| initSession(int sock, ait_val_t * __restrict v) | |
| { | |
| struct tagSession *sess = NULL; | |
| const char *str; | |
| ioTRACE(5); | |
| if (!v) | |
| return NULL; | |
| sess = malloc(sizeof(struct tagSession)); | |
| if (!sess) { | |
| ioDEBUG(3, "Error:: in malloc #%d - %s", errno, strerror(errno)); | |
| io_freeVar(v); | |
| return NULL; | |
| } else | |
| memset(sess, 0, sizeof(struct tagSession)); | |
| str = (const char*) cfg_GetAttribute(&cfg, CFG("mqttd"), CFG("retry")); | |
| if (!str) | |
| sess->sess_retry = DEFAULT_RETRY; | |
| else | |
| sess->sess_retry = strtol(str, NULL, 0); | |
| sess->sess_buf = mqtt_msgAlloc(0); | |
| if (!sess->sess_buf) { | |
| ioDEBUG(3, "Error:: in msgAlloc #%d - %s", mqtt_GetErrno(), mqtt_GetError()); | |
| free(sess); | |
| io_freeVar(v); | |
| return NULL; | |
| } | |
| sess->sess_sock = sock; | |
| strlcpy(sess->sess_addr, (char*) AIT_GET_STR(v), sizeof sess->sess_addr); | |
| io_freeVar(v); | |
| return sess; | |
| } | |
| static void | |
| finiSession(struct tagSession *sess) | |
| { | |
| register int i; | |
| struct tagStore *store; | |
| ioTRACE(5); | |
| if (!sess) | |
| return; | |
| for (i = 0; i < MQTT_QOS_RESERVED; i++) | |
| while ((store = SLIST_FIRST(&sess->sess_store[i]))) { | |
| SLIST_REMOVE_HEAD(&sess->sess_store[i], st_node); | |
| free(store); | |
| } | |
| if (sess->sess_will.msg) | |
| free(sess->sess_will.msg); | |
| if (sess->sess_will.topic) | |
| free(sess->sess_will.topic); | |
| if (sess->sess_sock > STDERR_FILENO) | |
| srv_Close(sess->sess_sock); | |
| mqtt_msgFree(&sess->sess_buf, 42); | |
| free(sess); | |
| } | |
| static void | |
| stopSession(struct tagSession *sess) | |
| { | |
| mqtt_msg_t msg = { NULL, 0 }; | |
| int ret; | |
| pthread_mutex_lock(&mtx_sess); | |
| TAILQ_REMOVE(&Sessions, sess, sess_node); | |
| pthread_mutex_unlock(&mtx_sess); | |
| ret = mqtt_msgDISCONNECT(&msg); | |
| if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) | |
| ioDEBUG(3, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); | |
| else { | |
| ioDEBUG(5, "Sended %d bytes for disconnect", ret); | |
| free(msg.msg_base); | |
| msg.msg_len = 0; | |
| } | |
| ioDEBUG(1, "Close socket=%d", sess->sess_sock); | |
| finiSession(sess); | |
| } | |
| static void * | |
| thrSession(struct tagSession *sess) | |
| { | |
| pthread_cleanup_push((void(*)(void*)) stopSession, sess); | |
| ioTRACE(2); | |
| pthread_cleanup_pop(42); | |
| pthread_exit(NULL); | |
| } | |
| static void * | |
| startSession(sched_task_t *task) | |
| { | |
| u_char basebuf[USHRT_MAX]; | |
| mqtt_msg_t msg = { NULL, 0 }, buf = { basebuf, sizeof basebuf }; | |
| mqtthdr_connflgs_t flg; | |
| mqtthdr_connack_t cack; | |
| struct tagSession *s, *sess = NULL; | |
| int ret; | |
| pthread_attr_t attr; | |
| ioTRACE(4); | |
| sess = initSession(TASK_FD(task), TASK_ARG(task)); | |
| if (!sess) { | |
| io_freeVar(TASK_ARG(task)); | |
| close(TASK_FD(task)); | |
| return NULL; | |
| } | |
| /* receive & decode packet */ | |
| if (recv(sess->sess_sock, buf.msg_base, buf.msg_len, 0) == -1) { | |
| ioDEBUG(3, "Error:: recv(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); | |
| finiSession(sess); | |
| return NULL; | |
| } | |
| cack = mqtt_readCONNECT(&buf, &sess->sess_ka, sess->sess_cid, sizeof sess->sess_cid, | |
| sess->sess_user, sizeof sess->sess_user, sess->sess_pass, sizeof sess->sess_pass, | |
| &sess->sess_will.topic, &sess->sess_will.msg); | |
| ret = cack.retcode; | |
| flg.flags = cack.reserved; | |
| if (flg.reserved) { | |
| ioDEBUG(3, "Error:: in MQTT protocol #%d - %s", mqtt_GetErrno(), mqtt_GetError()); | |
| goto end; | |
| } else { | |
| sess->sess_clean = flg.clean_sess; | |
| sess->sess_will.qos = flg.will_qos; | |
| sess->sess_will.retain = flg.will_retain; | |
| sess->sess_will.flag = flg.will_flg; | |
| } | |
| /* check online table for user */ | |
| if (call.LoginACC(&cfg, acc, sess->sess_user, sess->sess_pass) < 1) { | |
| ioDEBUG(0, "Login:: DENIED for username %s and password %s", | |
| sess->sess_user, sess->sess_pass); | |
| ret = MQTT_RETCODE_DENIED; | |
| goto end; | |
| } else { | |
| ioDEBUG(1, "Login:: ALLOWED for username %s ...", sess->sess_user); | |
| ret = MQTT_RETCODE_ACCEPTED; | |
| } | |
| if (call.FiniSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, "%") > 0) { | |
| ioDEBUG(2, "Old session %s should be disconnect!", sess->sess_cid); | |
| TAILQ_FOREACH(s, &Sessions, sess_node) | |
| if (!strcmp(s->sess_cid, sess->sess_cid)) { | |
| stopSession(s); | |
| break; | |
| } | |
| } | |
| if (call.InitSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, sess->sess_addr, | |
| sess->sess_will.flag, sess->sess_will.topic, sess->sess_will.msg, | |
| sess->sess_will.qos, sess->sess_will.retain) == -1) { | |
| ioDEBUG(0, "Session %s DENIED for username %s", sess->sess_cid, sess->sess_user); | |
| ret = MQTT_RETCODE_DENIED; | |
| goto end; | |
| } else { | |
| ioDEBUG(0, "Session %s from %s and username %s is started", | |
| sess->sess_cid, sess->sess_addr, sess->sess_user); | |
| ret = MQTT_RETCODE_ACCEPTED; | |
| } | |
| ret = mqtt_msgCONNACK(&msg, ret); | |
| if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) { | |
| ioDEBUG(3, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); | |
| finiSession(sess); | |
| return NULL; | |
| } else { | |
| ioDEBUG(5, "Sended %d bytes", ret); | |
| free(msg.msg_base); | |
| msg.msg_len = 0; | |
| } | |
| /* Start session thread OK ... */ | |
| pthread_attr_init(&attr); | |
| pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); | |
| pthread_mutex_lock(&mtx_sess); | |
| TAILQ_INSERT_TAIL(&Sessions, sess, sess_node); | |
| pthread_create(&sess->sess_tid, &attr, (void*(*)(void*)) thrSession, sess); | |
| pthread_mutex_unlock(&mtx_sess); | |
| call.LOG(logg, "Session %s started from %s for user %s OK!\n", sess->sess_cid, | |
| sess->sess_addr, sess->sess_user); | |
| pthread_attr_destroy(&attr); | |
| return NULL; | |
| end: /* close client connection */ | |
| ret = mqtt_msgCONNACK(&msg, ret); | |
| if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) { | |
| ioDEBUG(3, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); | |
| } else { | |
| ioDEBUG(5, "Sended %d bytes", ret); | |
| free(msg.msg_base); | |
| msg.msg_len = 0; | |
| } | |
| ioDEBUG(1, "Close client %s with socket=%d", sess->sess_addr, sess->sess_sock); | |
| finiSession(sess); | |
| return NULL; | |
| } | |
| /* ----------------------------------------------------------------------- */ | |
| static void * | |
| thrSched(void *arg __unused) | |
| { | |
| struct tagSession *sess; | |
| ioTRACE(1); | |
| schedRun(root, &Kill); | |
| TAILQ_FOREACH(sess, &Sessions, sess_node) | |
| if (sess->sess_tid) | |
| pthread_cancel(sess->sess_tid); | |
| pthread_exit(NULL); | |
| } | |
| int | |
| Run(int sock) | |
| { | |
| io_sockaddr_t sa; | |
| socklen_t sslen = sizeof sa.ss; | |
| int cli; | |
| pthread_t tid; | |
| ait_val_t *v; | |
| char str[STRSIZ]; | |
| ioTRACE(1); | |
| if (pthread_create(&tid, NULL, thrSched, NULL)) { | |
| ioLOGERR(0); | |
| return -1; | |
| } else | |
| pthread_detach(tid); | |
| ioDEBUG(2, "Run scheduler management thread"); | |
| if (listen(sock, SOMAXCONN) == -1) { | |
| ioLOGERR(0); | |
| return -1; | |
| } | |
| while (!Kill) { | |
| if ((cli = accept(sock, &sa.sa, &sslen)) == -1) { | |
| if (!Kill) | |
| continue; | |
| ioLOGERR(0); | |
| break; | |
| } | |
| v = io_allocVar(); | |
| if (!v) { | |
| ioLIBERR(mqtt); | |
| break; | |
| } else { | |
| memset(str, 0, sizeof str); | |
| snprintf(str, sizeof str, "%s:%hu", io_n2addr(&sa, v), io_n2port(&sa)); | |
| AIT_SET_STR(v, str); | |
| } | |
| ioDEBUG(1, "Connected client with socket=%d from %s", cli, AIT_GET_STR(v)); | |
| if (!schedRead(root, startSession, v, cli)) { | |
| io_freeVar(v); | |
| close(cli); | |
| ioDEBUG(1, "Terminated client with socket=%d", cli); | |
| } | |
| } | |
| return 0; | |
| } |