version 1.1.1.1.2.11, 2012/04/27 16:17:11
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version 1.3.4.4, 2022/09/14 14:32:48
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Line 12 terms:
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Line 12 terms:
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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> |
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Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 | Copyright 2004 - 2022 |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
Redistribution and use in source and binary forms, with or without |
Line 54 char mqtt_Error[STRSIZ];
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Line 54 char mqtt_Error[STRSIZ];
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#pragma GCC visibility pop |
#pragma GCC visibility pop |
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// mqtt_GetErrno() Get error code of last operation |
// mqtt_GetErrno() Get error code of last operation |
inline int | int |
mqtt_GetErrno() |
mqtt_GetErrno() |
{ |
{ |
return mqtt_Errno; |
return mqtt_Errno; |
} |
} |
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// mqtt_GetError() Get error text of last operation |
// mqtt_GetError() Get error text of last operation |
inline const char * | const char * |
mqtt_GetError() |
mqtt_GetError() |
{ |
{ |
return mqtt_Error; |
return mqtt_Error; |
} |
} |
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// mqtt_SetErr() Set error to variables for internal use!!! |
// mqtt_SetErr() Set error to variables for internal use!!! |
inline void | void |
mqtt_SetErr(int eno, char *estr, ...) |
mqtt_SetErr(int eno, char *estr, ...) |
{ |
{ |
va_list lst; |
va_list lst; |
Line 80 mqtt_SetErr(int eno, char *estr, ...)
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Line 80 mqtt_SetErr(int eno, char *estr, ...)
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va_end(lst); |
va_end(lst); |
} |
} |
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#pragma GCC visibility push(hidden) |
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/* _mqtt_readHEADER() read fixed header from MQTT message */ |
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inline struct mqtthdr * |
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_mqtt_readHEADER(mqtt_msg_t * __restrict buf, u_char cmd, int *bytes, int *len) |
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{ |
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struct mqtthdr *hdr; |
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if (!buf || !buf->msg_base || !buf->msg_len) |
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return NULL; |
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hdr = (struct mqtthdr*) buf->msg_base; |
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if (hdr->mqtt_msg.type != cmd) { |
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mqtt_SetErr(EINVAL, "Error:: wrong command #%d should be %d", |
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hdr->mqtt_msg.type, cmd); |
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return NULL; |
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} |
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*len = mqtt_decodeLen(hdr->mqtt_len, bytes); |
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return hdr; |
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} |
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#pragma GCC visibility pop |
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/* |
/* |
* mqtt_msgFree() Free MQTT message |
* mqtt_msgFree() Free MQTT message |
* |
* |
* @msg = Message buffer |
* @msg = Message buffer |
* @all = !=0 Destroy entire message, if MQTT Message allocated with mqtt_msgAlloc() | * @keepmsg = !=0 just free message content |
* return: none |
* return: none |
*/ |
*/ |
inline void | void |
mqtt_msgFree(mqtt_msg_t ** __restrict msg, int all) | mqtt_msgFree(mqtt_msg_t ** __restrict msg, int keepmsg) |
{ |
{ |
if (msg && *msg) { |
if (msg && *msg) { |
if ((*msg)->msg_base) { |
if ((*msg)->msg_base) { |
free((*msg)->msg_base); | e_free((*msg)->msg_base); |
(*msg)->msg_base = NULL; |
(*msg)->msg_base = NULL; |
} |
} |
if (all) { | if (!keepmsg) { |
free(*msg); | e_free(*msg); |
*msg = NULL; |
*msg = NULL; |
} else |
} else |
(*msg)->msg_len ^= (*msg)->msg_len; |
(*msg)->msg_len ^= (*msg)->msg_len; |
Line 132 mqtt_msgFree(mqtt_msg_t ** __restrict msg, int all)
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Line 110 mqtt_msgFree(mqtt_msg_t ** __restrict msg, int all)
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* @len = >0 Allocate buffer with length |
* @len = >0 Allocate buffer with length |
* return: NULL error or Message, after use must call mqtt_msgFree() with all!=0 |
* return: NULL error or Message, after use must call mqtt_msgFree() with all!=0 |
*/ |
*/ |
inline mqtt_msg_t * | mqtt_msg_t * |
mqtt_msgAlloc(u_short len) | mqtt_msgAlloc(u_int len) |
{ |
{ |
mqtt_msg_t *m = NULL; |
mqtt_msg_t *m = NULL; |
|
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m = malloc(sizeof(mqtt_msg_t)); | m = e_malloc(sizeof(mqtt_msg_t)); |
if (!m) { |
if (!m) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
Line 146 mqtt_msgAlloc(u_short len)
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Line 124 mqtt_msgAlloc(u_short len)
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if (len) { |
if (len) { |
m->msg_len = len; |
m->msg_len = len; |
m->msg_base = malloc(m->msg_len); | m->msg_base = e_malloc(m->msg_len); |
if (!m->msg_base) { |
if (!m->msg_base) { |
LOGERR; |
LOGERR; |
free(m); | e_free(m); |
return NULL; |
return NULL; |
} else |
} else |
memset(m->msg_base, 0, m->msg_len); |
memset(m->msg_base, 0, m->msg_len); |
Line 165 mqtt_msgAlloc(u_short len)
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Line 143 mqtt_msgAlloc(u_short len)
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* @len = new length |
* @len = new length |
* return: -1 error or >-1 old buffer length |
* return: -1 error or >-1 old buffer length |
*/ |
*/ |
inline int | int |
mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short len) | mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_int len) |
{ |
{ |
void *p = NULL; |
void *p = NULL; |
int ret = 0; |
int ret = 0; |
Line 177 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
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Line 155 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
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if (len <= msg->msg_len) |
if (len <= msg->msg_len) |
return len; |
return len; |
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p = realloc(msg->msg_base, len); | p = e_realloc(msg->msg_base, len); |
if (!p) { |
if (!p) { |
LOGERR; |
LOGERR; |
return -1; |
return -1; |
Line 191 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
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Line 169 mqtt_msgRealloc(mqtt_msg_t * __restrict msg, u_short l
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} |
} |
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/* |
/* |
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* mqtt_msgDup() - Duplicate message buffer |
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* |
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* @msg = Message |
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* return: NULL error or !=NULL duplicated message, after use must call mqtt_msgFree() with all!=0 |
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*/ |
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mqtt_msg_t * |
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mqtt_msgDup(mqtt_msg_t * __restrict msg) |
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{ |
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mqtt_msg_t *m = NULL; |
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m = e_malloc(sizeof(mqtt_msg_t)); |
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if (!m) { |
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LOGERR; |
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return NULL; |
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} else |
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memset(m, 0, sizeof(mqtt_msg_t)); |
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if (msg->msg_len) { |
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m->msg_len = msg->msg_len; |
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m->msg_base = e_malloc(m->msg_len); |
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if (!m->msg_base) { |
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LOGERR; |
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e_free(m); |
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return NULL; |
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} else |
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memcpy(m->msg_base, msg->msg_base, m->msg_len); |
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} |
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return m; |
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} |
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/* |
* mqtt_encodeLen() Encode number to MQTT length field |
* mqtt_encodeLen() Encode number to MQTT length field |
* |
* |
* @num = number for encode |
* @num = number for encode |
* return: -1 error or >-1 length |
* return: -1 error or >-1 length |
*/ |
*/ |
inline u_int | u_int |
mqtt_encodeLen(u_int num) |
mqtt_encodeLen(u_int num) |
{ |
{ |
register u_int dig, i; |
register u_int dig, i; |
u_int ret = 0; |
u_int ret = 0; |
|
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if (num > 268435455) | if (num > MQTT_DATA_MAX) |
return (u_int) -1; |
return (u_int) -1; |
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for (i = 0; i < sizeof ret && num > 0; i++) { |
for (i = 0; i < sizeof ret && num > 0; i++) { |
Line 224 mqtt_encodeLen(u_int num)
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Line 234 mqtt_encodeLen(u_int num)
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* @n = sizeof bytes, if !=NULL |
* @n = sizeof bytes, if !=NULL |
* return: -1 error, >-1 length of message |
* return: -1 error, >-1 length of message |
*/ |
*/ |
inline u_int | u_int |
mqtt_decodeLen(void * __restrict len, int * __restrict n) |
mqtt_decodeLen(void * __restrict len, int * __restrict n) |
{ |
{ |
register u_int i, dig, mul; |
register u_int i, dig, mul; |
Line 244 mqtt_decodeLen(void * __restrict len, int * __restrict
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Line 254 mqtt_decodeLen(void * __restrict len, int * __restrict
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if (n) |
if (n) |
*n = (char) (i & 0x7f) + 1; |
*n = (char) (i & 0x7f) + 1; |
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return ret; |
return ret; |
} |
} |
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Line 253 mqtt_decodeLen(void * __restrict len, int * __restrict
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Line 264 mqtt_decodeLen(void * __restrict len, int * __restrict
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* @len = length |
* @len = length |
* return: -1 error, >-1 sizeof len in bytes |
* return: -1 error, >-1 sizeof len in bytes |
*/ |
*/ |
inline char | char |
mqtt_sizeLen(u_int len) |
mqtt_sizeLen(u_int len) |
{ |
{ |
register char i; |
register char i; |
Line 270 mqtt_sizeLen(u_int len)
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Line 281 mqtt_sizeLen(u_int len)
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} |
} |
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/* |
/* |
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* mqtt_pktLen() - Get total packet length |
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* |
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* @hdr = MQTT packet header |
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* return: packet length |
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*/ |
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u_int |
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mqtt_pktLen(struct mqtthdr * __restrict hdr) |
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{ |
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int siz, n = 0; |
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if (!hdr) |
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return 0; |
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siz = mqtt_decodeLen(hdr->mqtt_len, &n); |
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siz += sizeof(struct mqtthdr) + n - 1; |
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return siz; |
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} |
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/* |
* mqtt_str2subs Create MQTT subscribe variable from string(s) |
* mqtt_str2subs Create MQTT subscribe variable from string(s) |
* |
* |
* @csStr = null terminated string array |
* @csStr = null terminated string array |
* @strnum = copy at most number of strings elements | * @strnum = copy at most number of strings elements, ==0 till NULL element |
* @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 * | mqtt_subscr_t * |
mqtt_str2subs(const char **csStr, u_short strnum, u_char *qoses) | mqtt_strs2subs(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_str2subs(const char **csStr, u_short strnum, u_ch
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Line 323 mqtt_str2subs(const char **csStr, u_short strnum, u_ch
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(!strnum || (strnum && items < strnum)) && *strs; |
(!strnum || (strnum && items < strnum)) && *strs; |
items++, strs++); |
items++, strs++); |
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if (!(v = malloc((items + 1) * sizeof(mqtt_subscr_t)))) { | if (!(v = e_malloc((items + 1) * sizeof(mqtt_subscr_t)))) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
} else |
} else |
Line 300 mqtt_str2subs(const char **csStr, u_short strnum, u_ch
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Line 331 mqtt_str2subs(const char **csStr, u_short strnum, u_ch
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for (i = 0; i < items; i++) { |
for (i = 0; i < items; i++) { |
v[i].sub_topic.msg_len = strlen(csStr[i]); |
v[i].sub_topic.msg_len = strlen(csStr[i]); |
v[i].sub_topic.msg_base = (u_char*) strdup(csStr[i]); | v[i].sub_topic.msg_base = (u_char*) e_strdup(csStr[i]); |
if (qoses && qoses[i] < MQTT_QOS_RESERVED) |
if (qoses && qoses[i] < MQTT_QOS_RESERVED) |
v[i].sub_ret = qoses[i]; |
v[i].sub_ret = qoses[i]; |
} |
} |
Line 314 mqtt_str2subs(const char **csStr, u_short strnum, u_ch
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Line 345 mqtt_str2subs(const char **csStr, u_short strnum, u_ch
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* @subs = Subscribe variables |
* @subs = Subscribe variables |
* return: none |
* return: none |
*/ |
*/ |
inline void | void |
mqtt_subFree(mqtt_subscr_t ** __restrict subs) |
mqtt_subFree(mqtt_subscr_t ** __restrict subs) |
{ |
{ |
mqtt_subscr_t *v; |
mqtt_subscr_t *v; |
Line 323 mqtt_subFree(mqtt_subscr_t ** __restrict subs)
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Line 354 mqtt_subFree(mqtt_subscr_t ** __restrict subs)
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return; |
return; |
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for (v = *subs; v->sub_topic.msg_base; v++) { |
for (v = *subs; v->sub_topic.msg_base; v++) { |
free(v->sub_topic.msg_base); | e_free(v->sub_topic.msg_base); |
v->sub_topic.msg_base = NULL; |
v->sub_topic.msg_base = NULL; |
v->sub_topic.msg_len = 0; |
v->sub_topic.msg_len = 0; |
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if (v->sub_value.msg_base) { |
if (v->sub_value.msg_base) { |
free(v->sub_value.msg_base); | e_free(v->sub_value.msg_base); |
v->sub_value.msg_base = NULL; |
v->sub_value.msg_base = NULL; |
v->sub_value.msg_len = 0; |
v->sub_value.msg_len = 0; |
} |
} |
} |
} |
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free(*subs); | e_free(*subs); |
*subs = NULL; |
*subs = NULL; |
} |
} |
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Line 344 mqtt_subFree(mqtt_subscr_t ** __restrict subs)
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Line 375 mqtt_subFree(mqtt_subscr_t ** __restrict subs)
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* @num = Number of elements |
* @num = Number of elements |
* 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 * | mqtt_subscr_t * |
mqtt_subAlloc(u_short num) |
mqtt_subAlloc(u_short num) |
{ |
{ |
mqtt_subscr_t *s = NULL; |
mqtt_subscr_t *s = NULL; |
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s = malloc((num + 1) * sizeof(mqtt_subscr_t)); | s = e_malloc((num + 1) * sizeof(mqtt_subscr_t)); |
if (!s) { |
if (!s) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
Line 366 mqtt_subAlloc(u_short num)
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Line 397 mqtt_subAlloc(u_short num)
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* @num = Number of elements |
* @num = Number of elements |
* 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 * | 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 *ss, *s = NULL; |
| register int i; |
|
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if (!subs) |
if (!subs) |
return NULL; |
return NULL; |
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s = realloc(*subs, (num + 1) * sizeof(mqtt_subscr_t)); | for (i = 0, ss = *subs; ss; i++, ss++); |
| if (i < num) |
| return NULL; |
| if (i == num) |
| return *subs; |
| |
| s = e_realloc(*subs, (num + 1) * sizeof(mqtt_subscr_t)); |
if (!s) { |
if (!s) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
Line 393 mqtt_subRealloc(mqtt_subscr_t ** __restrict subs, u_sh
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Line 431 mqtt_subRealloc(mqtt_subscr_t ** __restrict subs, u_sh
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* @src = source subscription |
* @src = source subscription |
* return: =NULL error or !=NULL successful copied a structure |
* return: =NULL error or !=NULL successful copied a structure |
*/ |
*/ |
inline mqtt_subscr_t * | mqtt_subscr_t * |
mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subscr_t * __restrict src) |
mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subscr_t * __restrict src) |
{ |
{ |
if (!dst || !src) |
if (!dst || !src) |
return NULL; |
return NULL; |
|
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if (src->sub_topic.msg_base) { |
if (src->sub_topic.msg_base) { |
dst->sub_topic.msg_base = malloc(src->sub_topic.msg_len + 1); | dst->sub_topic.msg_base = e_malloc(src->sub_topic.msg_len + 1); |
if (!dst->sub_topic.msg_base) { |
if (!dst->sub_topic.msg_base) { |
LOGERR; |
LOGERR; |
memset(dst, 0, sizeof(mqtt_subscr_t)); |
memset(dst, 0, sizeof(mqtt_subscr_t)); |
Line 411 mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subs
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Line 449 mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subs
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memcpy(dst->sub_topic.msg_base, src->sub_topic.msg_base, |
memcpy(dst->sub_topic.msg_base, src->sub_topic.msg_base, |
dst->sub_topic.msg_len); |
dst->sub_topic.msg_len); |
} |
} |
|
} else { |
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dst->sub_topic.msg_base = NULL; |
|
dst->sub_topic.msg_len = 0; |
} |
} |
|
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if (src->sub_value.msg_base) { |
if (src->sub_value.msg_base) { |
dst->sub_value.msg_base = malloc(src->sub_value.msg_len + 1); | dst->sub_value.msg_base = e_malloc(src->sub_value.msg_len + 1); |
if (!dst->sub_value.msg_base) { |
if (!dst->sub_value.msg_base) { |
LOGERR; |
LOGERR; |
if (dst->sub_topic.msg_base) |
if (dst->sub_topic.msg_base) |
free(dst->sub_topic.msg_base); | e_free(dst->sub_topic.msg_base); |
memset(dst, 0, sizeof(mqtt_subscr_t)); |
memset(dst, 0, sizeof(mqtt_subscr_t)); |
return NULL; |
return NULL; |
} else { |
} else { |
Line 426 mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subs
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Line 468 mqtt_subCopy(mqtt_subscr_t * __restrict dst, mqtt_subs
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memcpy(dst->sub_value.msg_base, src->sub_value.msg_base, |
memcpy(dst->sub_value.msg_base, src->sub_value.msg_base, |
dst->sub_value.msg_len); |
dst->sub_value.msg_len); |
} |
} |
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} else { |
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dst->sub_value.msg_base = NULL; |
|
dst->sub_value.msg_len = 0; |
} |
} |
|
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dst->sub_ret = src->sub_ret; |
dst->sub_ret = src->sub_ret; |
Line 590 mqtt_sqlTopic(const char *csInput, char * __restrict p
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Line 635 mqtt_sqlTopic(const char *csInput, char * __restrict p
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*s = *pos; |
*s = *pos; |
} |
} |
|
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return ret; |
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} |
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/* |
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* mqtt_KeepAlive() - Keep Alive check routine |
|
* |
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* @sock = connected socket |
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* @ka = keep alive timeout |
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* @tries = tries for receive correct ping response, usually ==1 |
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* return: -1 error, 0 host is alive, 1 timeout session or 2 broken session |
|
*/ |
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int |
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mqtt_KeepAlive(int sock, u_short ka, u_char tries) |
|
{ |
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int ret = 0; |
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struct pollfd pfd; |
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mqtt_msg_t msg = { NULL, 0 }; |
|
|
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if (sock < 3) |
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return -1; /* error */ |
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pfd.fd = sock; |
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pfd.events = POLLOUT; |
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if ((ret = poll(&pfd, 1, ka * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
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LOGERR; |
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return -1; /* error */ |
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} else if (!ret) |
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return 1; /* session is abandoned ... must be disconnect! */ |
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/* ping request */ |
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if ((ret = mqtt_msgPINGREQ(&msg)) == -1) |
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return -1; /* error */ |
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if ((ret = send(sock, msg.msg_base, ret, MSG_NOSIGNAL)) == -1) { |
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LOGERR; |
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goto end; |
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} |
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|
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pfd.events = POLLIN | POLLPRI; |
|
while (tries--) { |
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if ((ret = poll(&pfd, 1, ka * 1000)) == -1 || |
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pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) { |
|
LOGERR; |
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break; |
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} else if (!ret) { |
|
ret = 1; /* session is abandoned ... must be disconnect! */ |
|
continue; |
|
} |
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/* receive & decode packet */ |
|
if ((ret = recv(sock, msg.msg_base, msg.msg_len, 0)) == -1) { |
|
LOGERR; |
|
break; |
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} |
|
if (!mqtt_readPINGRESP(&msg)) { |
|
ret = 0; /* Host is alive */ |
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break; |
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} else |
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ret = 2; /* Session is broken ... must be disconnect! */ |
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} |
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end: |
|
free(msg.msg_base); |
|
return ret; |
return ret; |
} |
} |