version 1.1.2.12, 2011/12/09 09:53:54
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version 1.2.2.15, 2012/04/25 16:36:26
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#include "global.h" |
#include "global.h" |
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#include "rtlm.h" |
|
#include "utils.h" |
#include "mqttd.h" |
#include "mqttd.h" |
|
#include "mqttd_calls.h" |
|
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|
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extern char cliCmd[], *cliStr[]; | static void *startSession(sched_task_t *task); |
| static pthread_attr_t attr; |
|
|
|
|
static void * | static inline struct tagSession * |
startSession(sched_task_t *task) | initSession(int sock, ait_val_t * __restrict v) |
{ |
{ |
u_char basebuf[USHRT_MAX]; |
|
mqtt_cb_t cbs[MQTT_TYPE_MAX + 1] = { 0 }; |
|
mqtt_msg_t buf = { basebuf, sizeof basebuf }; |
|
mqtthdr_connflgs_t flg; |
|
int ret = 0; |
|
struct timeval tv = { 0 }; |
|
u_short ka; |
|
struct tagSession *sess = NULL; |
struct tagSession *sess = NULL; |
|
const char *str; |
|
|
FTRACE(4); | ioTRACE(5); |
|
|
|
if (!v) |
|
return NULL; |
|
|
sess = malloc(sizeof(struct tagSession)); |
sess = malloc(sizeof(struct tagSession)); |
if (!sess) { |
if (!sess) { |
VERB(3) syslog(LOG_ERR, "Error:: in malloc #%d - %s", errno, strerror(errno)); | ioSYSERR(0); |
goto end; | io_freeVar(v); |
| 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); |
| io_freeVar(v); |
| return NULL; |
} |
} |
|
|
if (recv(TASK_FD(task), buf.msg_base, buf.msg_len, 0) == -1) { | /* init server actor */ |
VERB(3) syslog(LOG_ERR, "Error:: recv(%d) #%d - %s", (int) TASK_FD(task), | sess->sess_srv = mqtt_srv_Init(sock, sess->sess_buf); |
errno, strerror(errno)); | if (!sess->sess_srv) { |
goto end; | ioDEBUG(3, "Error:: in srv_Init #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
| mqtt_msgFree(&sess->sess_buf, 42); |
| free(sess); |
| io_freeVar(v); |
| 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); |
} |
} |
flg = mqtt_readCONNECT(&buf, &ka, sess->sess_cid, sizeof sess->sess_cid, | |
| 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) |
| { |
| struct tagStore *store; |
| |
| ioTRACE(5); |
| |
| if (!sess) |
| return; |
| |
| if (call.FiniSessPUB) |
| call.FiniSessPUB(&cfg, pub, sess->sess_cid, sess->sess_user, "%"); |
| |
| 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) |
| free(store->st_subscr.sub_topic.msg_base); |
| if (store->st_subscr.sub_value.msg_base) |
| free(store->st_subscr.sub_value.msg_base); |
| |
| free(store); |
| } |
| SESS_ELEM_UNLOCK(sess); |
| pthread_mutex_destroy(&sess->sess_mtx); |
| |
| 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_srv_Fini(&sess->sess_srv); |
| mqtt_msgFree(&sess->sess_buf, 42); |
| |
| free(sess); |
| } |
| |
| static void |
| stopSession(struct tagSession *sess) |
| { |
| mqtt_msg_t msg = { NULL, 0 }; |
| int ret; |
| |
| ioTRACE(4); |
| |
| assert(sess); |
| |
| 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); |
| |
| ioDEBUG(1, "Close socket=%d", sess->sess_sock); |
| finiSession(sess); |
| |
| call.LOG(logg, "Session %s stopped from %s for user %s.\n", sess->sess_cid, |
| sess->sess_addr, sess->sess_user); |
| } |
| |
| static void * |
| thrSession(struct tagSession *sess) |
| { |
| int ret, locKill = 42; |
| struct pollfd pfd; |
| struct mqtthdr *hdr; |
| ait_val_t *v; |
| |
| pthread_cleanup_push((void(*)(void*)) stopSession, sess); |
| ioTRACE(2); |
| |
| pfd.fd = sess->sess_sock; |
| pfd.events = POLLIN | POLLPRI; |
| while (!Kill && locKill) { |
| if ((ret = poll(&pfd, 1, sess->sess_ka * 1000)) == -1 || |
| 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", |
| sess->sess_cid, sess->sess_addr, sess->sess_user); |
| break; |
| } |
| /* receive & decode packet */ |
| if ((ret = recv(sess->sess_sock, sess->sess_buf->msg_base, sess->sess_buf->msg_len, 0)) == -1) { |
| ioDEBUG(3, "Error:: recv(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); |
| break; |
| } else if (!ret) { |
| ioDEBUG(4, "Session %s EOF received.", sess->sess_cid); |
| break; |
| } else |
| hdr = (struct mqtthdr*) sess->sess_buf->msg_base; |
| |
| /* dispatch message type */ |
| if (mqtt_srv_Dispatch(sess->sess_srv, sess)) |
| ioLIBERR(mqtt); |
| switch (hdr->mqtt_msg.type) { |
| case MQTT_TYPE_CONNECT: |
| ioDEBUG(5, "Exec CONNECT session"); |
| if ((v = io_allocVar())) { |
| AIT_SET_STR(v, sess->sess_addr); |
| if (!schedEvent(root, startSession, v, (u_long) sess->sess_sock, sess, ret)) |
| io_freeVar(v); |
| } else |
| ioLIBERR(mqtt); |
| |
| SESS_LOCK; |
| TAILQ_REMOVE(&Sessions, sess, sess_node); |
| SESS_UNLOCK; |
| |
| locKill ^= locKill; |
| break; |
| case MQTT_TYPE_DISCONNECT: |
| ioDEBUG(5, "Exec DISCONNECT session"); |
| SESS_LOCK; |
| TAILQ_REMOVE(&Sessions, sess, sess_node); |
| SESS_UNLOCK; |
| |
| finiSession(sess); |
| locKill ^= locKill; |
| continue; |
| case MQTT_TYPE_PUBLISH: |
| ioDEBUG(5, "Exec PUBLISH topic QoS=%d", hdr->mqtt_msg.qos); |
| /* |
| if (cmdPUBLISH(sess)) |
| locKill ^= locKill; |
| */ |
| break; |
| case MQTT_TYPE_PUBREL: |
| break; |
| case MQTT_TYPE_SUBSCRIBE: |
| break; |
| case MQTT_TYPE_UNSUBSCRIBE: |
| break; |
| case MQTT_TYPE_PINGREQ: |
| ioDEBUG(5, "Exec PINGREQ session"); |
| break; |
| case MQTT_TYPE_PINGRESP: |
| ioDEBUG(5, "Exec PINGRESP session"); |
| break; |
| default: |
| ioDEBUG(5, "Error:: Session %s, wrong command %d - DISCARDED", |
| sess->sess_cid, hdr->mqtt_msg.type); |
| break; |
| } |
| } |
| |
| pthread_cleanup_pop(locKill); |
| pthread_exit(NULL); |
| return 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; |
| |
| ioTRACE(4); |
| |
| assert(task); |
| |
| if (!TASK_DATA(task)) { |
| /* flow from accept new clients */ |
| 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; |
| } |
| } 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_user, sizeof sess->sess_user, sess->sess_pass, sizeof sess->sess_pass, |
sess->sess_will.topic, sess->sess_will.msg); | &sess->sess_will.topic, &sess->sess_will.msg); |
| ret = cack.retcode; |
| flg.flags = cack.reserved; |
if (flg.reserved) { |
if (flg.reserved) { |
VERB(3) syslog(LOG_ERR, "Error:: in MQTT protocol #%d - %s", | ioDEBUG(3, "Error:: in MQTT protocol #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
mqtt_GetErrno(), mqtt_GetError()); | |
goto end; |
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 */ |
/* 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); |
|
return NULL; |
|
} else { |
|
ioDEBUG(5, "Sended %d bytes", ret); |
|
free(msg.msg_base); |
|
memset(&msg, 0, sizeof msg); |
|
} |
|
|
|
/* Start session thread OK ... */ |
|
SESS_LOCK; |
|
TAILQ_INSERT_TAIL(&Sessions, sess, sess_node); |
|
pthread_create(&sess->sess_tid, &attr, (void*(*)(void*)) thrSession, sess); |
|
SESS_UNLOCK; |
|
|
|
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); |
|
return NULL; |
end: /* close client connection */ |
end: /* close client connection */ |
if (sess) | ret = mqtt_msgCONNACK(&msg, ret); |
free(sess); | if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) { |
close(TASK_FD(task)); | ioDEBUG(3, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno)); |
VERB(1) syslog(LOG_DEBUG, "Close client %s with socket=%d", | } else { |
(char*) TASK_ARG(task), (int) TASK_FD(task)); | ioDEBUG(5, "Sended %d bytes", ret); |
if (TASK_ARG(task)) | free(msg.msg_base); |
free(TASK_ARG(task)); | memset(&msg, 0, sizeof msg); |
| } |
| |
| ioDEBUG(1, "Close client %s with socket=%d", sess->sess_addr, sess->sess_sock); |
| finiSession(sess); |
return NULL; |
return NULL; |
} |
} |
|
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/* ----------------------------------------------------------------------- */ |
|
|
|
static void * |
static void * |
thrSched(void *arg __unused) | acceptClient(sched_task_t *task) |
{ |
{ |
FTRACE(1); | int cli; |
| io_sockaddr_t sa; |
| socklen_t sslen = sizeof sa.ss; |
| ait_val_t *v; |
| char str[STRSIZ]; |
|
|
schedRun(root, (intptr_t*) &Kill); | ioTRACE(4); |
pthread_exit(NULL); | |
| assert(task); |
| |
| if ((cli = accept(TASK_FD(task), &sa.sa, &sslen)) == -1) |
| goto end; |
| else |
| fcntl(TASK_FD(task), F_SETFL, fcntl(TASK_FD(task), F_GETFL, 0) | O_NONBLOCK); |
| |
| v = io_allocVar(); |
| if (!v) { |
| ioLIBERR(io); |
| close(cli); |
| goto end; |
| } 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, NULL, 0)) { |
| io_freeVar(v); |
| close(cli); |
| ioDEBUG(1, "Terminated client with socket=%d", cli); |
| } |
| end: |
| if (!schedRead(TASK_ROOT(task), acceptClient, NULL, TASK_FD(task), NULL, 0)) |
| ioLIBERR(sched); |
| return NULL; |
} |
} |
|
|
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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 *str = NULL, szAddr[STRSIZ] = { 0 }; | |
pthread_t tid; | |
|
|
FTRACE(1); | ioTRACE(1); |
|
|
if (pthread_create(&tid, NULL, thrSched, NULL)) { | if (listen(sock, SOMAXCONN) == -1) { |
syslog(LOG_ERR, "Error:: thread scheduler #%d - %s", errno, strerror(errno)); | ioSYSERR(0); |
return -1; |
return -1; |
} else |
} else |
pthread_detach(tid); | fcntl(sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK); |
VERB(2) syslog(LOG_DEBUG, "Run scheduler management thread"); | |
|
|
if (listen(sock, SOMAXCONN) == -1) { | /* state machine - accept new connections */ |
syslog(LOG_ERR, "Error:: listen(%d) #%d - %s\n", sock, errno, strerror(errno)); | if (!schedRead(root, acceptClient, NULL, sock, NULL, 0)) { |
pthread_cancel(tid); | ioLIBERR(sched); |
return -1; |
return -1; |
} |
} |
|
|
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; | |
} | |
str = strdup(szAddr); | |
syslog(LOG_DEBUG, "Connected client with socket=%d from %s", cli, str); | |
} | |
|
|
if (!schedRead(root, startSession, str, cli)) { | schedPolling(root, &pl, NULL); |
close(cli); | schedRun(root, &Kill); |
VERB(1) syslog(LOG_DEBUG, "Terminated client with socket=%d", cli); | |
if (str) | |
free(str); | |
} | |
} | |
|
|
|
pthread_attr_destroy(&attr); |
|
|
|
/* free all undeleted elements into lists */ |
|
PUBS_LOCK; |
|
TAILQ_FOREACH(pub, &Pubs, pub_node) { |
|
TAILQ_REMOVE(&Pubs, pub, pub_node); |
|
|
|
AIT_FREE_VAL(&pub->pub_name); |
|
if (pub->pub_packet.msg_base) |
|
free(pub->pub_packet.msg_base); |
|
} |
|
PUBS_UNLOCK; |
return 0; |
return 0; |
} |
} |