version 1.1.1.1, 2012/01/26 13:07:33
|
version 1.1.1.1.2.11, 2012/04/27 16:17:11
|
Line 12 terms:
|
Line 12 terms:
|
All of the documentation and software included in the ELWIX and AITNET |
All of the documentation and software included in the ELWIX and AITNET |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
|
|
Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 | Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
|
|
Redistribution and use in source and binary forms, with or without |
Redistribution and use in source and binary forms, with or without |
Line 53 char mqtt_Error[STRSIZ];
|
Line 53 char mqtt_Error[STRSIZ];
|
|
|
#pragma GCC visibility pop |
#pragma GCC visibility pop |
|
|
// |
|
// Error maintenance functions ... |
|
// |
|
|
|
// mqtt_GetErrno() Get error code of last operation |
// mqtt_GetErrno() Get error code of last operation |
inline int |
inline int |
mqtt_GetErrno() |
mqtt_GetErrno() |
Line 85 mqtt_SetErr(int eno, char *estr, ...)
|
Line 81 mqtt_SetErr(int eno, char *estr, ...)
|
} |
} |
|
|
#pragma GCC visibility push(hidden) |
#pragma GCC visibility push(hidden) |
// _mqtt_readHEADER() read fixed header from MQTT message | /* _mqtt_readHEADER() read fixed header from MQTT message */ |
inline struct mqtthdr * |
inline struct mqtthdr * |
_mqtt_readHEADER(mqtt_msg_t * __restrict buf, u_char cmd, int *bytes, int *len) |
_mqtt_readHEADER(mqtt_msg_t * __restrict buf, u_char cmd, int *bytes, int *len) |
{ |
{ |
Line 106 _mqtt_readHEADER(mqtt_msg_t * __restrict buf, u_char c
|
Line 102 _mqtt_readHEADER(mqtt_msg_t * __restrict buf, u_char c
|
} |
} |
#pragma GCC visibility pop |
#pragma GCC visibility pop |
|
|
// ---------------------------------------------------------- |
|
|
|
/* |
/* |
* mqtt_msgFree() Free MQTT message |
* mqtt_msgFree() Free MQTT message |
Line 179 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
|
Line 174 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
|
if (!msg) |
if (!msg) |
return -1; |
return -1; |
|
|
if (len == msg->msg_len) | if (len <= msg->msg_len) |
return len; |
return len; |
|
|
p = realloc(msg->msg_base, len); |
p = realloc(msg->msg_base, len); |
Line 275 mqtt_sizeLen(u_int len)
|
Line 270 mqtt_sizeLen(u_int len)
|
} |
} |
|
|
/* |
/* |
* mqtt_str2sub Create MQTT subscribe variable from string(s) | * mqtt_str2subs Create MQTT subscribe variable from string(s) |
* |
* |
* @csStr = strings | * @csStr = null terminated string array |
* @strnum = number of strings elements | * @strnum = copy at most number of strings elements |
* @qoses = QoS elements applied to subscribe variable, |
* @qoses = QoS elements applied to subscribe variable, |
* count of elements must be equal with csStr elements |
* count of elements must be equal with csStr elements |
* return: NULL error or != subscribe variables array, must be free after use with mqtt_freeSub() |
* return: NULL error or != subscribe variables array, must be free after use with mqtt_freeSub() |
*/ |
*/ |
inline mqtt_subscr_t * |
inline mqtt_subscr_t * |
mqtt_str2sub(const char **csStr, u_short strnum, u_char *qoses) | mqtt_str2subs(const char **csStr, u_short strnum, u_char *qoses) |
{ |
{ |
mqtt_subscr_t *v; |
mqtt_subscr_t *v; |
register int i, items; |
register int i, items; |
Line 292 mqtt_str2sub(const char **csStr, u_short strnum, u_cha
|
Line 287 mqtt_str2sub(const char **csStr, u_short strnum, u_cha
|
|
|
if (!csStr) |
if (!csStr) |
return NULL; |
return NULL; |
for (items = 0, strs = csStr; *strs; items++, strs++) |
|
if (strnum && items >= strnum) { |
|
items = strnum; |
|
break; |
|
} |
|
|
|
|
for (items = 0, strs = csStr; |
|
(!strnum || (strnum && items < strnum)) && *strs; |
|
items++, strs++); |
|
|
if (!(v = malloc((items + 1) * sizeof(mqtt_subscr_t)))) { |
if (!(v = malloc((items + 1) * sizeof(mqtt_subscr_t)))) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
Line 373 mqtt_subAlloc(u_short num)
|
Line 367 mqtt_subAlloc(u_short num)
|
* return: NULL error or subscribe array, after use must call mqtt_subFree() |
* return: NULL error or subscribe array, after use must call mqtt_subFree() |
*/ |
*/ |
inline mqtt_subscr_t * |
inline mqtt_subscr_t * |
mqtt_subRealloc(mqtt_subscr_t * __restrict subs, u_short num) | mqtt_subRealloc(mqtt_subscr_t ** __restrict subs, u_short num) |
{ |
{ |
mqtt_subscr_t *s = NULL; |
mqtt_subscr_t *s = NULL; |
|
|
s = realloc(subs, (num + 1) * sizeof(mqtt_subscr_t)); | if (!subs) |
| return NULL; |
| |
| s = realloc(*subs, (num + 1) * sizeof(mqtt_subscr_t)); |
if (!s) { |
if (!s) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
|
} else { |
|
memset(s + num, 0, sizeof(mqtt_subscr_t)); |
|
*subs = s; |
} |
} |
|
|
return s; | return *subs; |
| } |
| |
| /* |
| * mqtt_subCopy() - Copy subscription structure to another one |
| * |
| * @dst = destination subscription |
| * @src = source subscription |
| * return: =NULL error or !=NULL successful copied a structure |
| */ |
| inline mqtt_subscr_t * |
| mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subscr_t * __restrict src) |
| { |
| if (!dst || !src) |
| return NULL; |
| |
| if (src->sub_topic.msg_base) { |
| dst->sub_topic.msg_base = malloc(src->sub_topic.msg_len + 1); |
| if (!dst->sub_topic.msg_base) { |
| LOGERR; |
| memset(dst, 0, sizeof(mqtt_subscr_t)); |
| return NULL; |
| } else { |
| dst->sub_topic.msg_len = src->sub_topic.msg_len; |
| ((char*) dst->sub_topic.msg_base)[dst->sub_topic.msg_len] = 0; |
| memcpy(dst->sub_topic.msg_base, src->sub_topic.msg_base, |
| dst->sub_topic.msg_len); |
| } |
| } |
| if (src->sub_value.msg_base) { |
| dst->sub_value.msg_base = malloc(src->sub_value.msg_len + 1); |
| if (!dst->sub_value.msg_base) { |
| LOGERR; |
| if (dst->sub_topic.msg_base) |
| free(dst->sub_topic.msg_base); |
| memset(dst, 0, sizeof(mqtt_subscr_t)); |
| return NULL; |
| } else { |
| dst->sub_value.msg_len = src->sub_value.msg_len; |
| ((char*) dst->sub_value.msg_base)[dst->sub_value.msg_len] = 0; |
| memcpy(dst->sub_value.msg_base, src->sub_value.msg_base, |
| dst->sub_value.msg_len); |
| } |
| } |
| |
| dst->sub_ret = src->sub_ret; |
| return dst; |
| } |
| |
| |
| /* |
| * mqtt_expandTopic() - Expanding topic to regular expression |
| * |
| * @csInput = Input topic |
| * @psRegEx = Output to regular expression |
| * @regexLen = Length of psRegEx |
| * @BOL = Begin of Line, if =0 not added |
| * @EOL = End of Line, if =0 not appended |
| * return: -1 error, 0 nothing expanded or >0 expanded bytes |
| */ |
| int |
| mqtt_expandTopic(const char *csInput, char * __restrict psRegEx, int regexLen, u_char BOL, u_char EOL) |
| { |
| int ret = 0; |
| register int i; |
| char *pos, *s; |
| const char reROM[] = "[](){}^$\\-|?.+*"; |
| |
| if (!csInput || !psRegEx || regexLen < 1) |
| return -1; |
| else |
| memset(psRegEx, 0, regexLen); |
| |
| /* check # */ |
| for (i = 0, pos = (char*) csInput; *pos && i < 2; pos++) |
| if (*pos == '#') |
| i++; |
| if (i == 2) { |
| mqtt_SetErr(EINVAL, "Syntax error, multiple occurrences of #..#"); |
| return -1; |
| } |
| if (i == 1 && (pos = strrchr(csInput, '#'))) |
| if ((pos != csInput && *(pos - 1) != '/') || *(pos + 1)) { |
| mqtt_SetErr(EINVAL, "Syntax error, bad format of #"); |
| return -1; |
| } |
| /* check + */ |
| for (pos = (char*) csInput; *pos && (pos = strchr(pos, '+')); pos++) |
| if ((pos != csInput && *(pos - 1) != '/') || (*(pos + 1) && *(pos + 1) != '/')) { |
| mqtt_SetErr(EINVAL, "Syntax error, bad format of +"); |
| return -1; |
| } |
| |
| /* BUILD REGEX */ |
| s = psRegEx; |
| if (BOL) { |
| *s++ = '^'; |
| ret++; |
| } |
| for (pos = (char*) csInput; s < psRegEx + regexLen && *pos; s++, pos++) { |
| if (*pos == '#') { |
| strlcat(s, ".*", regexLen - (s - psRegEx)); |
| s++; |
| ret++; |
| break; |
| } |
| if (*pos == '+') { |
| if (*(pos + 1)) { |
| strlcat(s, ".*", regexLen - (s - psRegEx)); |
| s++; |
| ret++; |
| continue; |
| } else { |
| strlcat(s, ".*/", regexLen - (s - psRegEx)); |
| ret += 2; |
| break; |
| } |
| } |
| for (i = 0; i < sizeof reROM - 1; i++) |
| if (*pos == reROM[i] && regexLen - (s - psRegEx) - 1 > 0) { |
| *s++ = '\\'; |
| ret++; |
| break; |
| } |
| |
| *s = *pos; |
| } |
| if (EOL) { |
| strlcat(psRegEx, "$", regexLen); |
| ret++; |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * mqtt_sqlTopic() - Expanding topic to SQL search string |
| * |
| * @csInput = Input topic |
| * @psSQL = Output to SQL search string |
| * @sqlLen = Length of psSQL |
| * return: -1 error, 0 changed bytes |
| */ |
| int |
| mqtt_sqlTopic(const char *csInput, char * __restrict psSQL, int sqlLen) |
| { |
| int ret = 0; |
| register int i; |
| char *pos, *s; |
| |
| if (!csInput || !psSQL || sqlLen < 1) |
| return -1; |
| else |
| memset(psSQL, 0, sqlLen); |
| |
| /* check # */ |
| for (i = 0, pos = (char*) csInput; *pos && i < 2; pos++) |
| if (*pos == '#') |
| i++; |
| if (i == 2) { |
| mqtt_SetErr(EINVAL, "Syntax error, multiple occurrences of #..#"); |
| return -1; |
| } |
| if (i == 1 && (pos = strrchr(csInput, '#'))) |
| if ((pos != csInput && *(pos - 1) != '/') || *(pos + 1)) { |
| mqtt_SetErr(EINVAL, "Syntax error, bad format of #"); |
| return -1; |
| } |
| /* check + */ |
| for (pos = (char*) csInput; *pos && (pos = strchr(pos, '+')); pos++) |
| if ((pos != csInput && *(pos - 1) != '/') || (*(pos + 1) && *(pos + 1) != '/')) { |
| mqtt_SetErr(EINVAL, "Syntax error, bad format of +"); |
| return -1; |
| } |
| |
| /* BUILD SEARCH STRING */ |
| s = psSQL; |
| for (pos = (char*) csInput; s < psSQL + sqlLen && *pos; s++, pos++) { |
| if (*pos == '#') { |
| *s = '%'; |
| s++; |
| ret++; |
| break; |
| } |
| if (*pos == '+') { |
| if (*(pos + 1)) { |
| *s = '%'; |
| ret++; |
| continue; |
| } else { |
| strlcat(s, "%/", sqlLen - (s - psSQL)); |
| ret += 2; |
| break; |
| } |
| } |
| /* |
| for (i = 0; i < sizeof reROM - 1; i++) |
| if (*pos == reROM[i] && regexLen - (s - psRegEx) - 1 > 0) { |
| *s++ = '\\'; |
| ret++; |
| break; |
| } |
| */ |
| |
| *s = *pos; |
| } |
| |
| return ret; |
| } |
| |
| |
| /* |
| * mqtt_KeepAlive() - Keep Alive check routine |
| * |
| * @sock = connected socket |
| * @ka = keep alive timeout |
| * @tries = tries for receive correct ping response, usually ==1 |
| * return: -1 error, 0 host is alive, 1 timeout session or 2 broken session |
| */ |
| int |
| mqtt_KeepAlive(int sock, u_short ka, u_char tries) |
| { |
| int ret = 0; |
| struct pollfd pfd; |
| mqtt_msg_t msg = { NULL, 0 }; |
| |
| if (sock < 3) |
| return -1; /* error */ |
| |
| pfd.fd = sock; |
| pfd.events = POLLOUT; |
| if ((ret = poll(&pfd, 1, ka * 1000)) == -1 || |
| pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
| LOGERR; |
| return -1; /* error */ |
| } else if (!ret) |
| return 1; /* session is abandoned ... must be disconnect! */ |
| /* ping request */ |
| if ((ret = mqtt_msgPINGREQ(&msg)) == -1) |
| return -1; /* error */ |
| if ((ret = send(sock, msg.msg_base, ret, MSG_NOSIGNAL)) == -1) { |
| LOGERR; |
| goto end; |
| } |
| |
| pfd.events = POLLIN | POLLPRI; |
| while (tries--) { |
| if ((ret = poll(&pfd, 1, ka * 1000)) == -1 || |
| pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
| LOGERR; |
| break; |
| } else if (!ret) { |
| ret = 1; /* session is abandoned ... must be disconnect! */ |
| continue; |
| } |
| /* receive & decode packet */ |
| if ((ret = recv(sock, msg.msg_base, msg.msg_len, 0)) == -1) { |
| LOGERR; |
| break; |
| } |
| if (!mqtt_readPINGRESP(&msg)) { |
| ret = 0; /* Host is alive */ |
| break; |
| } else |
| ret = 2; /* Session is broken ... must be disconnect! */ |
| } |
| end: |
| free(msg.msg_base); |
| return ret; |
} |
} |