version 1.1.2.1, 2012/01/25 10:34:14
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version 1.2.2.24, 2012/06/20 14:51:38
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Line 1
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#include "global.h" |
#include "global.h" |
#include "mqttd.h" |
#include "mqttd.h" |
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#include "rtlm.h" |
#include "mqttd_calls.h" |
#include "mqttd_calls.h" |
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static inline struct tagPkt * |
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mkPkt(void * __restrict data, int dlen) |
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{ |
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struct tagPkt *p = NULL; |
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p = io_malloc(sizeof(struct tagPkt)); |
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if (!p) { |
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ioDEBUG(7, "Error:: in send packet prepare #%d - %s", io_GetErrno(), io_GetError()); |
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return NULL; |
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} else |
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memset(p, 0, sizeof(struct tagPkt)); |
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p->pkt_data = io_allocVar(); |
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if (!p->pkt_data) { |
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ioDEBUG(7, "Error:: in send packet prepare #%d - %s", io_GetErrno(), io_GetError()); |
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io_free(p); |
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return NULL; |
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} |
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if (data && dlen > 0) |
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AIT_SET_BUF(p->pkt_data, data, dlen); |
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return p; |
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} |
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static inline void |
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freePkt(struct tagPkt * __restrict p) |
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{ |
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if (!p) |
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return; |
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io_freeVar(&p->pkt_data); |
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io_free(p); |
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} |
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static void * |
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sendPacket(sched_task_t *task) |
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{ |
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struct tagPkt *p = TASK_ARG(task); |
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register int n, slen; |
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u_char *pos; |
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if (!p || !p->pkt_data || AIT_ISEMPTY(p->pkt_data)) { |
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ioDEBUG(9, "Error:: invalid packet or found empty content ..."); |
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return NULL; |
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} |
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for (slen = AIT_LEN(p->pkt_data), pos = AIT_GET_BUF(p->pkt_data); slen > 0; |
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slen -= n, pos += n) { |
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n = send(TASK_FD(task), pos, slen, MSG_NOSIGNAL); |
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if (n == -1) { |
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ioSYSERR(0); |
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break; |
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} |
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} |
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freePkt(p); |
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return NULL; |
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} |
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/* --------------------------------------------------- */ |
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static int |
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pubOnce(struct tagSession *sess, char * __restrict psTopic, int datlen) |
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{ |
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struct tagPkt *p = NULL; |
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struct tagSession *s = NULL; |
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struct tagStore *st = NULL; |
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regex_t re; |
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regmatch_t match; |
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int ret; |
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char szStr[STRSIZ]; |
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TAILQ_FOREACH(s, &Sessions, sess_node) { |
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SLIST_FOREACH(st, &s->sess_subscr, st_node) { |
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if ((ret = regcomp(&re, st->st_subscr.sub_topic.msg_base, REG_EXTENDED))) { |
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regerror(ret, &re, szStr, sizeof szStr); |
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regfree(&re); |
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ioDEBUG(3, "Error:: regcomp(%s) %s\n", (char*) |
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st->st_subscr.sub_topic.msg_base, szStr); |
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} |
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if (!regexec(&re, psTopic, 1, &match, 0)) { |
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/* MATCH */ |
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ioDEBUG(1, "+++ dlen=%d\n", datlen); |
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p = mkPkt(sess->sess_buf->msg_base, datlen); |
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schedWrite(root, sendPacket, p, s->sess_sock, NULL, 0); |
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} |
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regfree(&re); |
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} |
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} |
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return 0; |
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} |
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static int |
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pubAck(struct tagSession *sess, char * __restrict psTopic, int datlen) |
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{ |
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return 0; |
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} |
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static int |
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pubExactly(struct tagSession *sess, char * __restrict psTopic, int datlen) |
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{ |
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return 0; |
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} |
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int |
int |
Publish(struct tagSession *sess) | cmdPUBLISH(void *srv, int len, void *arg) |
{ |
{ |
struct mqtthdr *hdr; |
struct mqtthdr *hdr; |
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struct tagSession *sess = (struct tagSession*) arg; |
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char szTopic[STRSIZ] = { 0 }; |
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int siz = 0; |
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u_short mid = 0; |
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struct tagPkt *p = NULL; |
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ioTRACE(2); |
ioTRACE(2); |
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if (!sess) |
if (!sess) |
return -1; |
return -1; |
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ioDEBUG(5, "Exec PUBLISH session"); |
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siz = mqtt_readPUBLISH(sess->sess_buf, szTopic, sizeof szTopic, &mid, NULL); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in readPUBLISH #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
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/* duplicate packet for retransmit to subscribers */ |
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/* |
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pubpkt = mqtt_msgDup(sess->sess_buf); |
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if (!pubpkt) { |
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ioDEBUG(5, "Error:: in duplicate packet #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} else |
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*/ |
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hdr = (struct mqtthdr*) sess->sess_buf->msg_base; |
hdr = (struct mqtthdr*) sess->sess_buf->msg_base; |
switch (hdr->mqtt_msg.qos) { |
switch (hdr->mqtt_msg.qos) { |
case MQTT_QOS_ONCE: |
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break; |
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case MQTT_QOS_ACK: |
case MQTT_QOS_ACK: |
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pubAck(sess, szTopic, mqtt_pktLen(hdr)); |
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siz = mqtt_msgPUBACK(sess->sess_buf, mid); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgPUBACK #%d - %s", |
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mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
break; |
break; |
case MQTT_QOS_EXACTLY: |
case MQTT_QOS_EXACTLY: |
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pubExactly(sess, szTopic, mqtt_pktLen(hdr)); |
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siz = mqtt_msgPUBREC(sess->sess_buf, mid); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgPUBREC #%d - %s", |
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mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
break; |
break; |
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case MQTT_QOS_ONCE: |
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pubOnce(sess, szTopic, mqtt_pktLen(hdr)); |
default: |
default: |
ioDEBUG(1, "Error:: Unknown QoS %d - rejected publishing request", |
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hdr->mqtt_msg.qos); |
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return 0; |
return 0; |
} |
} |
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p = mkPkt(sess->sess_buf->msg_base, siz); |
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memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len); |
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schedWrite(root, sendPacket, p, sess->sess_sock, NULL, 0); |
return 0; |
return 0; |
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} |
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int |
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cmdPUBREL(void *srv, int len, void *arg) |
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{ |
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struct tagSession *sess = (struct tagSession*) arg; |
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int siz = 0; |
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u_short mid = 0; |
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struct tagPkt *p = NULL; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec PUBREL session"); |
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mid = mqtt_readPUBREL(sess->sess_buf); |
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if (mid == (u_short) -1) { |
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ioDEBUG(5, "Error:: in readPUBREL #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
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// TODO:: Delete from database topic |
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siz = mqtt_msgPUBCOMP(sess->sess_buf, mid); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgPUBCOMP #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} else { |
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p = mkPkt(sess->sess_buf->msg_base, siz); |
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memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len); |
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} |
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schedWrite(root, sendPacket, p, sess->sess_sock, NULL, 0); |
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return 0; |
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} |
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int |
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cmdSUBSCRIBE(void *srv, int len, void *arg) |
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{ |
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struct tagSession *sess = (struct tagSession*) arg; |
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mqtt_subscr_t *subs = NULL; |
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int siz = 0; |
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u_short mid = 0; |
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register int i; |
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struct tagStore *store; |
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char buf[BUFSIZ]; |
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void *ptr; |
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struct tagPkt *p = NULL; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec SUBSCRIBE session"); |
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siz = mqtt_readSUBSCRIBE(sess->sess_buf, &mid, &subs); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in readSUBSCRIBE #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
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/* add to db */ |
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for (i = 0; i < siz; i++) { |
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/* convert topic to sql search statement */ |
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if (mqtt_sqlTopic(subs[i].sub_topic.msg_base, buf, sizeof buf) == -1) { |
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ioDEBUG(5, "Error:: in db #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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goto end; |
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} |
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if (call.WritePUB_subscribe(&cfg, pub, sess->sess_cid, mid, buf, |
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sess->sess_user, sess->sess_addr, subs[i].sub_ret) > 0) { |
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store = io_malloc(sizeof(struct tagStore)); |
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if (!store) { |
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ioSYSERR(0); |
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goto end; |
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} else { |
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store->st_msgid = mid; |
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mqtt_subCopy(&store->st_subscr, &subs[i]); |
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} |
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/* add to cache */ |
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SLIST_INSERT_HEAD(&sess->sess_subscr, store, st_node); |
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/* convert topic to regexp */ |
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if (mqtt_expandTopic(subs[i].sub_topic.msg_base, buf, sizeof buf, 1, 1) == -1) { |
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ioDEBUG(5, "Error:: in regexp #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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subs[i].sub_ret = MQTT_QOS_DENY; |
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} else { |
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ptr = realloc(store->st_subscr.sub_topic.msg_base, strlen(buf) + 1); |
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if (!ptr) { |
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ioSYSERR(0); |
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subs[i].sub_ret = MQTT_QOS_DENY; |
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} else { |
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store->st_subscr.sub_topic.msg_base = ptr; |
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store->st_subscr.sub_topic.msg_len = strlen(buf) + 1; |
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memcpy(store->st_subscr.sub_topic.msg_base, buf, |
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store->st_subscr.sub_topic.msg_len); |
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} |
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call.LOG(logg, "Added [%s] SUBSCRIBE '%s'(%d) from %s\n", sess->sess_cid, |
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store->st_subscr.sub_topic.msg_base, |
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store->st_subscr.sub_topic.msg_len, sess->sess_addr); |
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subs[i].sub_ret = MQTT_QOS_PASS; |
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} |
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} else |
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subs[i].sub_ret = MQTT_QOS_DENY; |
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} |
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/* send acknowledge */ |
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siz = mqtt_msgSUBACK(sess->sess_buf, subs, mid); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgSUBACK #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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goto end; |
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} else { |
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p = mkPkt(sess->sess_buf->msg_base, siz); |
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memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len); |
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} |
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schedWrite(root, sendPacket, p, sess->sess_sock, NULL, 0); |
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end: |
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mqtt_subFree(&subs); |
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return 0; |
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} |
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int |
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cmdUNSUBSCRIBE(void *srv, int len, void *arg) |
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{ |
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struct tagSession *sess = (struct tagSession*) arg; |
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mqtt_subscr_t *subs = NULL; |
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int siz = 0; |
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u_short mid = 0; |
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register int i; |
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struct tagStore *store, *tmp; |
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struct tagPkt *p = NULL; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec UNSUBSCRIBE session"); |
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siz = mqtt_readUNSUBSCRIBE(sess->sess_buf, &mid, &subs); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in readUNSUBSCRIBE #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} |
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/* del from db */ |
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for (i = 0; i < siz; i++) { |
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SLIST_FOREACH_SAFE(store, &sess->sess_subscr, st_node, tmp) { |
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if (store->st_subscr.sub_ret == subs[i].sub_ret && |
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store->st_subscr.sub_topic.msg_base && |
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!strcmp(store->st_subscr.sub_topic.msg_base, |
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subs[i].sub_topic.msg_base)) { |
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SLIST_REMOVE(&sess->sess_subscr, store, tagStore, st_node); |
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if (store->st_subscr.sub_topic.msg_base) |
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free(store->st_subscr.sub_topic.msg_base); |
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if (store->st_subscr.sub_value.msg_base) |
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free(store->st_subscr.sub_value.msg_base); |
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io_free(store); |
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} |
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} |
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call.DeletePUB_subscribe(&cfg, pub, sess->sess_cid, subs[i].sub_topic.msg_base, |
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sess->sess_user, "%"); |
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} |
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/* send acknowledge */ |
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siz = mqtt_msgUNSUBACK(sess->sess_buf, mid); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgUNSUBACK #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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goto end; |
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} else { |
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p = mkPkt(sess->sess_buf->msg_base, siz); |
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memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len); |
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} |
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schedWrite(root, sendPacket, p, sess->sess_sock, NULL, 0); |
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end: |
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mqtt_subFree(&subs); |
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return 0; |
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} |
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int |
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cmdPINGREQ(void *srv, int len, void *arg) |
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{ |
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struct tagSession *sess = (struct tagSession*) arg; |
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int siz = 0; |
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struct tagPkt *p = NULL; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec PINGREQ session"); |
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siz = mqtt_msgPINGRESP(sess->sess_buf); |
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if (siz == -1) { |
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ioDEBUG(5, "Error:: in msgPINGRESP #%d - %s", mqtt_GetErrno(), mqtt_GetError()); |
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return 0; |
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} else { |
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p = mkPkt(sess->sess_buf->msg_base, siz); |
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memset(sess->sess_buf->msg_base, 0, sess->sess_buf->msg_len); |
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} |
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schedWrite(root, sendPacket, p, sess->sess_sock, NULL, 0); |
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return 0; |
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} |
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int |
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cmdCONNECT(void *srv, int len, void *arg) |
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{ |
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struct tagStore *store; |
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struct tagPkt *p; |
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struct tagSession *sess = (struct tagSession*) arg; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec CONNECT session"); |
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TAILQ_REMOVE(&Sessions, sess, sess_node); |
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if (sess->sess_clean) { |
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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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if (call.DeletePUB_subscribe) |
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call.DeletePUB_subscribe(&cfg, pub, sess->sess_cid, "%", sess->sess_user, "%"); |
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if (call.WipePUB_topic) |
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call.WipePUB_topic(&cfg, pub, sess->sess_cid, sess->sess_user, -1); |
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} |
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while ((store = SLIST_FIRST(&sess->sess_subscr))) { |
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SLIST_REMOVE_HEAD(&sess->sess_subscr, st_node); |
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if (store->st_subscr.sub_topic.msg_base) |
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free(store->st_subscr.sub_topic.msg_base); |
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if (store->st_subscr.sub_value.msg_base) |
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free(store->st_subscr.sub_value.msg_base); |
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io_free(store); |
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} |
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while ((p = SLIST_FIRST(&sess->sess_sndpkt))) { |
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SLIST_REMOVE_HEAD(&sess->sess_sndpkt, pkt_node); |
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io_freeVar(&p->pkt_data); |
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io_free(p); |
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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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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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return -3; /* reconnect client */ |
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} |
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int |
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cmdDISCONNECT(void *srv, int len, void *arg) |
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{ |
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struct tagSession *sess = (struct tagSession*) arg; |
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ioTRACE(2); |
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if (!sess) |
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return -1; |
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ioDEBUG(5, "Exec DISCONNECT session"); |
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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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return -2; /* must terminate dispatcher */ |
} |
} |