version 1.1.2.5, 2011/12/01 08:45:01
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version 1.2, 2012/01/27 15:05:38
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Line 1
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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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#include "mqttd_calls.h" |
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static void *startSession(sched_task_t *task); |
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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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TAILQ_INIT(&sess->sess_sndqueue); |
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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(USHRT_MAX); |
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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, int preservSock) |
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{ |
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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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if (call.FiniSessPUB) |
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call.FiniSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, "%"); |
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while ((store = TAILQ_FIRST(&sess->sess_sndqueue))) { |
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TAILQ_REMOVE(&sess->sess_sndqueue, store, st_node); |
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if (store->st_subscr.sub_topic._base) |
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free(store->st_subscr.sub_topic._base); |
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if (store->st_subscr.sub_value._base) |
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free(store->st_subscr.sub_value._base); |
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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 && !preservSock) |
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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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ioTRACE(4); |
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assert(sess); |
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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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memset(&msg, 0, sizeof msg); |
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} |
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ioDEBUG(1, "Close socket=%d", sess->sess_sock); |
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finiSession(sess, 0); |
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call.LOG(logg, "Session %s stopped from %s for user %s.\n", sess->sess_cid, |
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sess->sess_addr, sess->sess_user); |
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} |
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static int |
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KASession(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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struct pollfd pfd; |
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ioTRACE(4); |
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assert(sess); |
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/* ping request */ |
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ret = mqtt_msgPINGREQ(&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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return -1; |
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} else { |
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ioDEBUG(5, "Sended %d bytes for ping request", ret); |
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free(msg.msg_base); |
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memset(&msg, 0, sizeof msg); |
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} |
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pfd.fd = sess->sess_sock; |
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pfd.events = POLLIN | POLLPRI; |
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if ((ret = poll(&pfd, 1, sess->sess_ka * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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ioDEBUG(3, "Error:: poll(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); |
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return -1; |
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} else if (!ret) { |
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ioDEBUG(5, "Warning:: Session is abandoned ... must be disconnect!"); |
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return 1; |
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} |
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/* receive & decode packet */ |
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if (recv(sess->sess_sock, sess->sess_buf->msg_base, sess->sess_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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return -1; |
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} |
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if (mqtt_readPINGRESP(sess->sess_buf)) { |
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ioDEBUG(5, "Warning:: Session is broken, not hear ping response ... must be disconnect!"); |
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return 2; |
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} |
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/* Keep Alive is OK! */ |
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return 0; |
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} |
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static void * |
static void * |
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thrSession(struct tagSession *sess) |
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{ |
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mqtt_msg_t msg = { NULL, 0 }; |
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int ret, locKill = 42; |
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struct pollfd pfd; |
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struct mqtthdr *hdr; |
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ait_val_t *v; |
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struct tagStore *store; |
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pthread_cleanup_push((void(*)(void*)) stopSession, sess); |
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ioTRACE(2); |
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pfd.fd = sess->sess_sock; |
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pfd.events = POLLIN | POLLPRI; |
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while (!Kill && locKill) { |
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if ((ret = poll(&pfd, 1, sess->sess_ka * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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ioDEBUG(3, "Error:: poll(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); |
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break; |
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} else if (!ret && (ret = KASession(sess))) { |
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call.LOG(logg, "Session %s keep-alive missing from %s for user %s ...\n", |
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sess->sess_cid, sess->sess_addr, sess->sess_user); |
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break; |
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} |
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/* receive & decode packet */ |
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if ((ret = recv(sess->sess_sock, sess->sess_buf->msg_base, sess->sess_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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break; |
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} else if (!ret) { |
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ioDEBUG(4, "Session %s EOF received.", sess->sess_cid); |
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break; |
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} else |
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hdr = (struct mqtthdr*) sess->sess_buf->msg_base; |
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/* dispatch message type */ |
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switch (hdr->mqtt_msg.type) { |
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case MQTT_TYPE_CONNECT: |
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ioDEBUG(5, "Exec CONNECT session"); |
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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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if (call.FiniSessPUB) |
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call.FiniSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, "%"); |
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while ((store = TAILQ_FIRST(&sess->sess_sndqueue))) { |
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TAILQ_REMOVE(&sess->sess_sndqueue, store, st_node); |
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if (store->st_subscr.sub_topic._base) |
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free(store->st_subscr.sub_topic._base); |
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if (store->st_subscr.sub_value._base) |
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free(store->st_subscr.sub_value._base); |
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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 ((v = io_allocVar())) { |
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AIT_SET_STR(v, sess->sess_addr); |
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if (!schedEvent(root, startSession, v, (u_long) sess->sess_sock, sess, ret)) |
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io_freeVar(v); |
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} else |
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ioLIBERR(mqtt); |
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locKill ^= locKill; |
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call.LOG(logg, "Session %s stopped from %s for user %s.\n", sess->sess_cid, |
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sess->sess_addr, sess->sess_user); |
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continue; |
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case MQTT_TYPE_DISCONNECT: |
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ioDEBUG(5, "Exec DISCONNECT session"); |
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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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finiSession(sess, 0); |
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locKill ^= locKill; |
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call.LOG(logg, "Session %s stopped from %s for user %s.\n", sess->sess_cid, |
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sess->sess_addr, sess->sess_user); |
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continue; |
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case MQTT_TYPE_PUBLISH: |
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ioDEBUG(5, "Exec PUBLISH topic QoS=%d", hdr->mqtt_msg.qos); |
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if (Publish(sess)) |
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locKill ^= locKill; |
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break; |
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case MQTT_TYPE_PUBREL: |
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break; |
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case MQTT_TYPE_SUBSCRIBE: |
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break; |
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case MQTT_TYPE_UNSUBSCRIBE: |
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break; |
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case MQTT_TYPE_PINGREQ: |
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break; |
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default: |
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ioDEBUG(5, "Error:: Session %s, wrong command %d - DISCARDED", |
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sess->sess_cid, hdr->mqtt_msg.type); |
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break; |
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} |
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} |
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pthread_cleanup_pop(locKill); |
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pthread_exit(NULL); |
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} |
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static void * |
startSession(sched_task_t *task) |
startSession(sched_task_t *task) |
{ |
{ |
close(TASK_FD(task)); | u_char basebuf[USHRT_MAX]; |
VERB(1) syslog(LOG_DEBUG, "Close client %s with socket=%d", | mqtt_msg_t msg = { NULL, 0 }, buf = { basebuf, sizeof basebuf }; |
(char*) TASK_ARG(task), (int) TASK_FD(task)); | mqtthdr_connflgs_t flg; |
if (TASK_ARG(task)) | mqtthdr_connack_t cack; |
free(TASK_ARG(task)); | struct tagSession *s, *sess = NULL; |
return 0; | int ret; |
| pthread_attr_t attr; |
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| ioTRACE(4); |
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| assert(task); |
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| if (!TASK_DATA(task)) { |
| 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, 0); |
| return NULL; |
| } |
| } else { |
| sess = TASK_DATA(task); |
| buf.msg_len = TASK_DATLEN(task) > sizeof basebuf ? sizeof basebuf : TASK_DATLEN(task); |
| memcpy(buf.msg_base, sess->sess_buf->msg_base, buf.msg_len); |
| } |
| |
| 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)) { |
| /* found stale session & disconnect it! */ |
| 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, 0); |
| return NULL; |
| } else { |
| ioDEBUG(5, "Sended %d bytes", ret); |
| free(msg.msg_base); |
| memset(&msg, 0, sizeof msg); |
| } |
| |
| /* 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 (timeout=%d) OK!\n", sess->sess_cid, |
| sess->sess_addr, sess->sess_user, sess->sess_ka); |
| |
| 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); |
| memset(&msg, 0, sizeof msg); |
| } |
| |
| ioDEBUG(1, "Close client %s with socket=%d", sess->sess_addr, sess->sess_sock); |
| finiSession(sess, 0); |
| return NULL; |
} |
} |
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/* ----------------------------------------------------------------------- */ |
/* ----------------------------------------------------------------------- */ |
Line 17 startSession(sched_task_t *task)
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Line 398 startSession(sched_task_t *task)
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static void * |
static void * |
thrSched(void *arg __unused) |
thrSched(void *arg __unused) |
{ |
{ |
FTRACE(1); | struct tagSession *sess; |
| struct timespec pl = { 0, 10000000 }; |
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schedRun(root, (intptr_t*) &Kill); | ioTRACE(1); |
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| schedPolling(root, &pl, NULL); |
| schedRun(root, &Kill); |
| |
| TAILQ_FOREACH(sess, &Sessions, sess_node) |
| if (sess->sess_tid) |
| pthread_cancel(sess->sess_tid); |
| ioDEBUG(5, "EXIT from Scheduler thread !!!"); |
pthread_exit(NULL); |
pthread_exit(NULL); |
} |
} |
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Line 29 Run(int sock)
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Line 419 Run(int sock)
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io_sockaddr_t sa; |
io_sockaddr_t sa; |
socklen_t sslen = sizeof sa.ss; |
socklen_t sslen = sizeof sa.ss; |
int cli; |
int cli; |
char *str = NULL, szAddr[STRSIZ] = { 0 }; |
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pthread_t tid; |
pthread_t tid; |
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ait_val_t *v; |
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char str[STRSIZ]; |
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FTRACE(1); | ioTRACE(1); |
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if (pthread_create(&tid, NULL, thrSched, NULL)) { |
if (pthread_create(&tid, NULL, thrSched, NULL)) { |
syslog(LOG_ERR, "Error:: thread scheduler #%d - %s", errno, strerror(errno)); | ioSYSERR(0); |
return -1; |
return -1; |
} else |
} else |
pthread_detach(tid); |
pthread_detach(tid); |
VERB(2) syslog(LOG_DEBUG, "Run scheduler management thread"); | ioDEBUG(2, "Run scheduler management thread"); |
|
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if (listen(sock, SOMAXCONN) == -1) { |
if (listen(sock, SOMAXCONN) == -1) { |
syslog(LOG_ERR, "Error:: listen(%d) #%d - %s\n", sock, errno, strerror(errno)); | ioSYSERR(0); |
pthread_cancel(tid); | |
return -1; |
return -1; |
} |
} |
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while (!Kill) { |
while (!Kill) { |
if ((cli = accept(sock, &sa.sa, &sslen)) == -1) { |
if ((cli = accept(sock, &sa.sa, &sslen)) == -1) { |
syslog(LOG_ERR, "Error:: accept() #%d - %s", errno, strerror(errno)); | if (!Kill) |
continue; | continue; |
} else | ioSYSERR(0); |
VERB(1) { | break; |
switch (sa.sa.sa_family) { | } |
case AF_INET: | v = io_allocVar(); |
inet_ntop(AF_INET, &sa.sin.sin_addr, szAddr, sslen); | if (!v) { |
snprintf(szAddr, sizeof szAddr, "%s:%d", | ioLIBERR(mqtt); |
szAddr, ntohs(sa.sin.sin_port)); | break; |
break; | } else { |
case AF_INET6: | memset(str, 0, sizeof str); |
inet_ntop(AF_INET6, &sa.sin6.sin6_addr, szAddr, sslen); | snprintf(str, sizeof str, "%s:%hu", io_n2addr(&sa, v), io_n2port(&sa)); |
snprintf(szAddr, sizeof szAddr, "%s:%d", | AIT_SET_STR(v, str); |
szAddr, ntohs(sa.sin6.sin6_port)); | } |
break; | ioDEBUG(1, "Connected client with socket=%d from %s", cli, AIT_GET_STR(v)); |
case AF_LOCAL: | |
strlcpy(szAddr, sa.sun.sun_path, sizeof szAddr); | |
break; | |
default: | |
close(cli); | |
syslog(LOG_ERR, "Error:: unsupported address type %d", | |
sa.sa.sa_family); | |
continue; | |
} | |
str = strdup(szAddr); | |
syslog(LOG_DEBUG, "Connected client with socket=%d from %s", cli, str); | |
} | |
|
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if (!schedRead(root, startSession, str, cli)) { | if (!schedRead(root, startSession, v, cli, NULL, 0)) { |
| io_freeVar(v); |
close(cli); |
close(cli); |
VERB(1) syslog(LOG_DEBUG, "Terminated client with socket=%d", cli); | ioDEBUG(1, "Terminated client with socket=%d", cli); |
if (str) | |
free(str); | |
} |
} |
} |
} |
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