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