version 1.1.2.4, 2011/12/01 08:15:25
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version 1.2.2.20, 2012/05/03 13:39:34
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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 int | static void *startSession(sched_task_t *task); |
startSession(int s, const char *csAddr) | static pthread_attr_t attr; |
| |
| |
| static inline struct tagSession * |
| initSession(int sock, ait_val_t * __restrict v) |
{ |
{ |
return 0; | struct tagSession *sess = NULL; |
| const char *str; |
| |
| ioTRACE(5); |
| |
| if (!v) |
| return NULL; |
| |
| sess = malloc(sizeof(struct tagSession)); |
| if (!sess) { |
| ioSYSERR(0); |
| return NULL; |
| } else |
| memset(sess, 0, sizeof(struct tagSession)); |
| |
| pthread_mutex_init(&sess->sess_mtx, NULL); |
| |
| SLIST_INIT(&sess->sess_subscr); |
| |
| str = cfg_getAttribute(&cfg, "mqttd", "retry"); |
| if (!str) |
| sess->sess_retry = DEFAULT_RETRY; |
| else |
| sess->sess_retry = strtol(str, NULL, 0); |
| |
| sess->sess_buf = mqtt_msgAlloc(USHRT_MAX); |
| if (!sess->sess_buf) { |
| ioLIBERR(mqtt); |
| free(sess); |
| return NULL; |
| } |
| |
| /* init server actor */ |
| sess->sess_srv = mqtt_srv_Init(sock, sess->sess_buf); |
| if (!sess->sess_srv) { |
| ioDEBUG(3, "Error:: in srv_Init #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
| mqtt_msgFree(&sess->sess_buf, 42); |
| free(sess); |
| return NULL; |
| } else { |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_CONNECT, cmdCONNECT); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_PUBLISH, cmdPUBLISH); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_PUBREL, cmdPUBREL); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_SUBSCRIBE, cmdSUBSCRIBE); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_UNSUBSCRIBE, cmdUNSUBSCRIBE); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_PINGREQ, cmdPINGREQ); |
| mqtt_srv_setCmd(sess->sess_srv, MQTT_TYPE_DISCONNECT, cmdDISCONNECT); |
| } |
| |
| sess->sess_sock = sock; |
| strlcpy(sess->sess_addr, (char*) AIT_GET_STR(v), sizeof sess->sess_addr); |
| return sess; |
} |
} |
|
|
|
static void |
|
finiSession(struct tagSession *sess) |
|
{ |
|
struct tagStore *store; |
|
|
|
ioTRACE(5); |
|
|
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if (!sess) |
|
return; |
|
|
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if (call.FiniSessPUB) |
|
call.FiniSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, "%"); |
|
|
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SESS_ELEM_LOCK(sess); |
|
while ((store = SLIST_FIRST(&sess->sess_subscr))) { |
|
SLIST_REMOVE_HEAD(&sess->sess_subscr, st_node); |
|
|
|
if (store->st_subscr.sub_topic.msg_base) |
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free(store->st_subscr.sub_topic.msg_base); |
|
if (store->st_subscr.sub_value.msg_base) |
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free(store->st_subscr.sub_value.msg_base); |
|
|
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free(store); |
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} |
|
SESS_ELEM_UNLOCK(sess); |
|
pthread_mutex_destroy(&sess->sess_mtx); |
|
|
|
if (sess->sess_will.msg) |
|
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) |
|
srv_Close(sess->sess_sock); |
|
|
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mqtt_srv_Fini(&sess->sess_srv); |
|
mqtt_msgFree(&sess->sess_buf, 42); |
|
|
|
free(sess); |
|
} |
|
|
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static void |
|
stopSession(struct tagSession *sess) |
|
{ |
|
mqtt_msg_t msg = { NULL, 0 }; |
|
int ret; |
|
|
|
ioTRACE(4); |
|
|
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assert(sess); |
|
|
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SESS_LOCK; |
|
TAILQ_REMOVE(&Sessions, sess, sess_node); |
|
SESS_UNLOCK; |
|
|
|
ret = mqtt_msgDISCONNECT(&msg); |
|
send(sess->sess_sock, msg.msg_base, ret, MSG_NOSIGNAL); |
|
free(msg.msg_base); |
|
|
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ioDEBUG(1, "Close socket=%d", sess->sess_sock); |
|
call.LOG(logg, "Session %s stopped from %s for user %s.\n", sess->sess_cid, |
|
sess->sess_addr, sess->sess_user); |
|
|
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finiSession(sess); |
|
} |
|
|
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static void * |
|
thrSession(struct tagSession *sess) |
|
{ |
|
int ret, locKill = 42; |
|
struct pollfd pfd; |
|
struct mqtthdr *hdr; |
|
|
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pthread_cleanup_push((void(*)(void*)) stopSession, sess); |
|
ioTRACE(2); |
|
|
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pfd.fd = sess->sess_sock; |
|
pfd.events = POLLIN | POLLPRI; |
|
while (!Kill && locKill) { |
|
if ((ret = poll(&pfd, 1, sess->sess_ka * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
|
ioDEBUG(3, "Error:: poll(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); |
|
break; |
|
} else if (!ret && (ret = mqtt_KeepAlive(sess->sess_sock, sess->sess_ka, 1))) { |
|
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; |
|
} |
|
/* receive & decode packet */ |
|
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)); |
|
break; |
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} else if (!ret) { |
|
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; |
|
|
|
/* dispatch message type */ |
|
if (mqtt_srv_Dispatch(sess->sess_srv, sess)) |
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ioLIBERR(mqtt); |
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switch (hdr->mqtt_msg.type) { |
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case MQTT_TYPE_CONNECT: |
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schedEvent(root, startSession, NULL, (u_long) sess->sess_sock, sess, ret); |
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locKill ^= locKill; |
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break; |
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case MQTT_TYPE_DISCONNECT: |
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finiSession(sess); |
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locKill ^= locKill; |
|
continue; |
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case MQTT_TYPE_SUBSCRIBE: |
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case MQTT_TYPE_PINGREQ: |
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break; |
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case MQTT_TYPE_PUBLISH: |
|
ioDEBUG(5, "Exec PUBLISH topic QoS=%d", hdr->mqtt_msg.qos); |
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/* |
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if (cmdPUBLISH(sess)) |
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locKill ^= locKill; |
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*/ |
|
break; |
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case MQTT_TYPE_PUBREL: |
|
break; |
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case MQTT_TYPE_UNSUBSCRIBE: |
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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); |
|
break; |
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} |
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} |
|
|
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pthread_cleanup_pop(locKill); |
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pthread_exit(NULL); |
|
return 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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ioTRACE(4); |
|
|
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assert(task); |
|
|
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if (!TASK_DATA(task)) { |
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/* flow from accept new clients */ |
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sess = initSession(TASK_FD(task), TASK_ARG(task)); |
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io_freeVar(TASK_ARG(task)); |
|
if (!sess) { |
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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 */ |
|
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)); |
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finiSession(sess); |
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return NULL; |
|
} |
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} else { |
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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); |
|
} |
|
|
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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 */ |
|
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); |
|
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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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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/* found stale session & disconnect it! */ |
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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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memset(&msg, 0, sizeof msg); |
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} |
|
|
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/* Start session thread OK ... */ |
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SESS_LOCK; |
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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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SESS_UNLOCK; |
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|
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call.LOG(logg, "Session %s started from %s for user %s (timeout=%d) OK!\n", sess->sess_cid, |
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sess->sess_addr, sess->sess_user, sess->sess_ka); |
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return NULL; |
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end: /* close client connection */ |
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ret = mqtt_msgCONNACK(&msg, ret); |
|
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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memset(&msg, 0, sizeof msg); |
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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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static void * |
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acceptClient(sched_task_t *task) |
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{ |
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int cli; |
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io_sockaddr_t sa; |
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socklen_t sslen = sizeof sa.ss; |
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ait_val_t *v; |
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char str[STRSIZ]; |
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ioTRACE(4); |
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assert(task); |
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if ((cli = accept(TASK_FD(task), &sa.sa, &sslen)) == -1) |
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goto end; |
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else |
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fcntl(TASK_FD(task), F_SETFL, fcntl(TASK_FD(task), F_GETFL, 0) | O_NONBLOCK); |
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v = io_allocVar(); |
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if (!v) { |
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ioLIBERR(io); |
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close(cli); |
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goto end; |
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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_FREE_VAL(v); |
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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, NULL, 0)) { |
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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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end: |
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if (!schedRead(TASK_ROOT(task), acceptClient, NULL, TASK_FD(task), NULL, 0)) |
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ioLIBERR(sched); |
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return NULL; |
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} |
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/* ----------------------------------------------------------------------- */ |
/* ----------------------------------------------------------------------- */ |
|
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int |
int |
Run(int sock) |
Run(int sock) |
{ |
{ |
io_sockaddr_t sa; | struct tagPub *pub; |
socklen_t sslen = sizeof sa.ss; | struct timespec pl = { 0, 100000000 }; |
int cli; | |
char szAddr[STRSIZ] = { 0 }; | |
|
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FTRACE(1); | ioTRACE(1); |
|
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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); |
return -1; |
return -1; |
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} else |
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fcntl(sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK); |
|
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/* state machine - accept new connections */ |
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if (!schedRead(root, acceptClient, NULL, sock, NULL, 0)) { |
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ioLIBERR(sched); |
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return -1; |
} |
} |
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while (!Kill) { | pthread_attr_init(&attr); |
if ((cli = accept(sock, &sa.sa, &sslen)) == -1) { | pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
syslog(LOG_ERR, "Error:: accept() #%d - %s", errno, strerror(errno)); | |
continue; | |
} else | |
VERB(1) { | |
switch (sa.sa.sa_family) { | |
case AF_INET: | |
inet_ntop(AF_INET, &sa.sin.sin_addr, szAddr, sslen); | |
snprintf(szAddr, sizeof szAddr, "%s:%d", | |
szAddr, ntohs(sa.sin.sin_port)); | |
break; | |
case AF_INET6: | |
inet_ntop(AF_INET6, &sa.sin6.sin6_addr, szAddr, sslen); | |
snprintf(szAddr, sizeof szAddr, "%s:%d", | |
szAddr, ntohs(sa.sin6.sin6_port)); | |
break; | |
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; | |
} | |
syslog(LOG_DEBUG, "Connected client with socket=%d from %s", cli, szAddr); | |
} | |
|
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if (startSession(cli, szAddr)) { | schedPolling(root, &pl, NULL); |
close(cli); | schedRun(root, &Kill); |
VERB(1) syslog(LOG_DEBUG, "Terminated client with socket=%d", cli); | |
continue; | |
} | |
} | |
|
|
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pthread_attr_destroy(&attr); |
|
|
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/* free all undeleted elements into lists */ |
|
PUBS_LOCK; |
|
TAILQ_FOREACH(pub, &Pubs, pub_node) { |
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TAILQ_REMOVE(&Pubs, pub, pub_node); |
|
|
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AIT_FREE_VAL(&pub->pub_name); |
|
if (pub->pub_packet.msg_base) |
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free(pub->pub_packet.msg_base); |
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} |
|
PUBS_UNLOCK; |
return 0; |
return 0; |
} |
} |