version 1.3.12.2, 2022/09/13 22:20:59
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version 1.3.12.4, 2022/09/14 18:36:23
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Line 50 SUCH DAMAGE.
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Line 50 SUCH DAMAGE.
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* mqtt_msgCONNECT() Create CONNECT message |
* mqtt_msgCONNECT() Create CONNECT message |
* |
* |
* @csConnID = ConnectID |
* @csConnID = ConnectID |
* @Version = MQTT version | * @Version = MQTT version, if =0 default version is 3.1.1 |
* @KASec = Keep alive timeout, if =0 default timeout for MQTT |
* @KASec = Keep alive timeout, if =0 default timeout for MQTT |
* @csUser = Username if !=NULL |
* @csUser = Username if !=NULL |
* @csPass = Password for Username, only if csUser is set |
* @csPass = Password for Username, only if csUser is set |
Line 59 SUCH DAMAGE.
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Line 59 SUCH DAMAGE.
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* @ClrSess = Clear Session subscriptions after disconnect |
* @ClrSess = Clear Session subscriptions after disconnect |
* @WillQOS = Will QOS if csWillTopic is set |
* @WillQOS = Will QOS if csWillTopic is set |
* @WillRetain = Will Retain Will Message if csWillTopic is set |
* @WillRetain = Will Retain Will Message if csWillTopic is set |
* return: NULL error or allocated connect message | * return: NULL error or allocated CONNECT message |
*/ |
*/ |
mqtt_msg_t * |
mqtt_msg_t * |
mqtt_msgCONNECT(const char *csConnID, u_char Version, u_short KASec, |
mqtt_msgCONNECT(const char *csConnID, u_char Version, u_short KASec, |
Line 83 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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Line 83 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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MQTT_CONNID_MAX - 1); |
MQTT_CONNID_MAX - 1); |
return NULL; |
return NULL; |
} |
} |
if (Version < MQTT_PROTO_VER_3 || Version > MQTT_PROTO_VER_5) { | if (Version && (Version < MQTT_PROTO_VER_3 || Version > MQTT_PROTO_VER_5)) { |
mqtt_SetErr(EINVAL, "Unsupported version"); |
mqtt_SetErr(EINVAL, "Unsupported version"); |
return NULL; |
return NULL; |
} |
} |
Line 140 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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Line 140 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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data += MQTTHDR_VAR_SIZEOF(var); |
data += MQTTHDR_VAR_SIZEOF(var); |
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/* protocol version */ |
/* protocol version */ |
*(u_char*) data++ = Version; | *(u_char*) data++ = Version ? Version : MQTT_PROTO_VER_311; |
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/* CONNECT header */ |
/* CONNECT header */ |
flags = (mqtthdr_connflgs_t*) data++; |
flags = (mqtthdr_connflgs_t*) data++; |
Line 206 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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Line 206 mqtt_msgCONNECT(const char *csConnID, u_char Version,
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return msg; |
return msg; |
} |
} |
#if 0 | |
/* |
/* |
* mqtt_msgCONNACK() Create CONNACK message |
* mqtt_msgCONNACK() Create CONNACK message |
* |
* |
* @buf = Message buffer |
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* @retcode = Return code |
* @retcode = Return code |
* return: -1 error or >-1 message size for send | * return: NULL error or allocated CONNACK message |
*/ |
*/ |
mqtt_msg_t * |
mqtt_msg_t * |
mqtt_msgCONNACK(u_char retcode) |
mqtt_msgCONNACK(u_char retcode) |
{ |
{ |
int siz = 0; |
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struct mqtthdr *hdr; |
struct mqtthdr *hdr; |
mqtthdr_connack_t *ack; |
mqtthdr_connack_t *ack; |
mqtt_msg_t *msg = NULL; |
mqtt_msg_t *msg = NULL; |
Line 230 mqtt_msgCONNACK(u_char retcode)
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Line 228 mqtt_msgCONNACK(u_char retcode)
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if (!(msg = mqtt_msgAlloc(sizeof(struct mqtthdr) + sizeof(mqtthdr_connack_t)))) |
if (!(msg = mqtt_msgAlloc(sizeof(struct mqtthdr) + sizeof(mqtthdr_connack_t)))) |
return NULL; |
return NULL; |
else { |
else { |
hdr = (struct mqtthdr *) (buf->msg_base + siz); | hdr = (struct mqtthdr *) msg->msg_base; |
siz += sizeof(struct mqtthdr); | ack = (mqtthdr_connack_t*) msg->msg_base + sizeof(struct mqtthdr); |
ack = (mqtthdr_connack_t*) (buf->msg_base + siz); | |
siz += sizeof(mqtthdr_connack_t); | |
} |
} |
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/* fixed header */ |
/* fixed header */ |
MQTTHDR_MSGINIT(hdr); |
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hdr->mqtt_msg.type = MQTT_TYPE_CONNACK; |
hdr->mqtt_msg.type = MQTT_TYPE_CONNACK; |
*hdr->mqtt_len = sizeof(mqtthdr_connack_t); |
*hdr->mqtt_len = sizeof(mqtthdr_connack_t); |
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Line 245 mqtt_msgCONNACK(u_char retcode)
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Line 240 mqtt_msgCONNACK(u_char retcode)
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ack->reserved = 0; |
ack->reserved = 0; |
ack->retcode = retcode; |
ack->retcode = retcode; |
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return siz; | return msg; |
} |
} |
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static int | static mqtt_msg_t * |
_mqtt_msgSIMPLE_(mqtt_msg_t * __restrict buf, u_char cmd) | _mqtt_msgSIMPLE_(u_char cmd) |
{ |
{ |
int siz = 0; |
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struct mqtthdr *hdr; |
struct mqtthdr *hdr; |
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mqtt_msg_t *msg = NULL; |
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if (!buf) | if (!(msg = mqtt_msgAlloc(sizeof(struct mqtthdr)))) |
return -1; | return NULL; |
| else |
| hdr = (struct mqtthdr *) msg->msg_base; |
|
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if (mqtt_msgRealloc(buf, sizeof(struct mqtthdr)) == -1) |
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return -1; |
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else { |
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hdr = (struct mqtthdr *) (buf->msg_base + siz); |
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siz += sizeof(struct mqtthdr); |
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} |
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/* fixed header */ |
/* fixed header */ |
MQTTHDR_MSGINIT(hdr); |
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hdr->mqtt_msg.type = cmd; |
hdr->mqtt_msg.type = cmd; |
*hdr->mqtt_len = 0; |
*hdr->mqtt_len = 0; |
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return siz; | return msg; |
} |
} |
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/* |
/* |
* mqtt_msgPINGREQ() Create PINGREQ message |
* mqtt_msgPINGREQ() Create PINGREQ message |
* |
* |
* @buf = Message buffer | * return: NULL error or allocated message |
* return: -1 error or >-1 message size for send | |
*/ |
*/ |
int | mqtt_msg_t * |
mqtt_msgPINGREQ(mqtt_msg_t * __restrict buf) | mqtt_msgPINGREQ() |
{ |
{ |
return _mqtt_msgSIMPLE_(buf, MQTT_TYPE_PINGREQ); | return _mqtt_msgSIMPLE_(MQTT_TYPE_PINGREQ); |
} |
} |
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/* |
/* |
* mqtt_msgPINGRESP() Create PINGRESP message |
* mqtt_msgPINGRESP() Create PINGRESP message |
* |
* |
* @buf = Message buffer | * return: NULL error or allocated message |
* return: -1 error or >-1 message size for send | |
*/ |
*/ |
int | mqtt_msg_t * |
mqtt_msgPINGRESP(mqtt_msg_t * __restrict buf) | mqtt_msgPINGRESP() |
{ |
{ |
return _mqtt_msgSIMPLE_(buf, MQTT_TYPE_PINGRESP); | return _mqtt_msgSIMPLE_(MQTT_TYPE_PINGRESP); |
} |
} |
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/* |
/* |
* mqtt_msgDISCONNECT() Create DISCONNECT message |
* mqtt_msgDISCONNECT() Create DISCONNECT message |
* |
* |
* @buf = Message buffer | * return: NULL error or allocated message |
* return: -1 error or >-1 message size for send | |
*/ |
*/ |
int | mqtt_msg_t * |
mqtt_msgDISCONNECT(mqtt_msg_t * __restrict buf) | mqtt_msgDISCONNECT() |
{ |
{ |
return _mqtt_msgSIMPLE_(buf, MQTT_TYPE_DISCONNECT); | return _mqtt_msgSIMPLE_(MQTT_TYPE_DISCONNECT); |
} |
} |
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/* ============= decode ============ */ |
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/* |
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* mqtt_readCONNECT() Read elements from CONNECT message |
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* |
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* @buf = Message buffer |
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* @kasec = Keep Alive in seconds for current connection |
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* @psConnID = ConnectID |
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* @connLen = ConnectID length |
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* @psUser = Username if !=NULL |
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* @userLen = Username length |
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* @psPass = Password for Username, only if csUser is set |
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* @passLen = Password length |
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* @psWillTopic = Will Topic if !=NULL Will Flags set into message and must be free() |
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* @psWillMessage = Will Message, may be NULL if !NULL must be free() after use! |
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* return: .reserved == 1 is error or == 0 connection flags & msg ok |
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*/ |
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mqtthdr_connack_t |
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mqtt_readCONNECT(mqtt_msg_t * __restrict buf, u_short *kasec, char * __restrict psConnID, int connLen, |
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char * __restrict psUser, int userLen, char * __restrict psPass, int passLen, |
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char ** __restrict psWillTopic, char ** __restrict psWillMessage) |
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{ |
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mqtthdr_connflgs_t flg = { MQTT_CONNFLGS_INIT }; |
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mqtthdr_connack_t cack = { 1, MQTT_RETCODE_DENIED }; |
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struct mqtthdr *hdr; |
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mqtthdr_var_t *var; |
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mqtt_len_t *ka; |
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int len, ret; |
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caddr_t pos; |
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if (!buf || !buf->msg_base || !buf->msg_len || !psConnID || !connLen) |
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return cack; |
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hdr = _mqtt_readHEADER(buf, MQTT_TYPE_CONNECT, &ret, &len); |
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if (!hdr) |
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return cack; |
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if (len < 12) { |
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mqtt_SetErr(EINVAL, "Short message length %d", len); |
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return cack; |
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} else { |
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pos = buf->msg_base + ret + 1; |
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var = (mqtthdr_var_t*) pos; |
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} |
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/* check init string & protocol */ |
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if (var->var_sb.sb.l != 6 || strncmp((char*) var->var_data, MQTT_CONN_STR, 6)) { |
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mqtt_SetErr(EINVAL, "Invalid init string %.6s(%d)", |
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var->var_data, var->var_sb.sb.l); |
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cack.retcode = MQTT_RETCODE_REFUSE_UNAVAIL; |
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return cack; |
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} else { |
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pos += var->var_sb.sb.l + sizeof(mqtt_len_t); |
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proto = (mqtthdr_protover_t*) pos; |
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} |
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if (*proto != MQTT_PROTO_VER) { |
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mqtt_SetErr(EINVAL, "Invalid protocol version %d", *pos); |
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cack.retcode = MQTT_RETCODE_REFUSE_VER; |
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return cack; |
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} else |
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pos++; |
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flg = *(mqtthdr_connflgs_t*) pos; |
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pos++; |
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ka = (mqtt_len_t*) pos; |
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*kasec = ntohs(ka->val); |
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pos += sizeof(mqtt_len_t); |
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len -= pos - (caddr_t) var; |
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/* get ConnID */ |
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var = (mqtthdr_var_t*) pos; |
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len -= MQTTHDR_VAR_SIZEOF(var); |
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if (len < 0 || var->var_sb.sb.l > 23) { |
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mqtt_SetErr(EINVAL, "Unexpected EOM at Connection ID %d", len); |
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cack.retcode = MQTT_RETCODE_REFUSE_ID; |
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return cack; |
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} else { |
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memset(psConnID, 0, connLen--); |
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memcpy(psConnID, var->var_data, ntohs(var->var_sb.val) > connLen ? connLen : ntohs(var->var_sb.val)); |
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pos += MQTTHDR_VAR_SIZEOF(var); |
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} |
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/* get Willz */ |
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if (flg.will_flg) { |
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var = (mqtthdr_var_t*) pos; |
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len -= MQTTHDR_VAR_SIZEOF(var); |
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if (len < 0) { |
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mqtt_SetErr(EINVAL, "Unexpected EOM at Will Topic %d", len); |
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cack.retcode = MQTT_RETCODE_REFUSE_ID; |
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return cack; |
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} else { |
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if (psWillTopic) { |
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*psWillTopic = malloc(ntohs(var->var_sb.val) + 1); |
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if (!*psWillTopic) { |
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LOGERR; |
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cack.retcode = MQTT_RETCODE_REFUSE_UNAVAIL; |
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return cack; |
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} else |
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memset(*psWillTopic, 0, ntohs(var->var_sb.val) + 1); |
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memcpy(*psWillTopic, var->var_data, ntohs(var->var_sb.val)); |
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} |
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pos += MQTTHDR_VAR_SIZEOF(var); |
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} |
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var = (mqtthdr_var_t*) pos; |
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len -= MQTTHDR_VAR_SIZEOF(var); |
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if (len < 0) { |
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mqtt_SetErr(EINVAL, "Unexpected EOM at Will Message %d", len); |
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cack.retcode = MQTT_RETCODE_REFUSE_ID; |
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return cack; |
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} else { |
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if (psWillMessage) { |
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*psWillMessage = malloc(ntohs(var->var_sb.val) + 1); |
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if (!*psWillMessage) { |
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LOGERR; |
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cack.retcode = MQTT_RETCODE_REFUSE_UNAVAIL; |
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return cack; |
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} else |
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memset(*psWillMessage, 0, ntohs(var->var_sb.val) + 1); |
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memcpy(*psWillMessage, var->var_data, ntohs(var->var_sb.val)); |
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} |
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pos += MQTTHDR_VAR_SIZEOF(var); |
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} |
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} |
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/* get User/Pass */ |
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if (flg.username) { |
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var = (mqtthdr_var_t*) pos; |
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len -= MQTTHDR_VAR_SIZEOF(var); |
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if (len < 0 || var->var_sb.sb.l > 12) { |
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mqtt_SetErr(EINVAL, "Unexpected EOM at Username %d", len); |
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cack.retcode = MQTT_RETCODE_REFUSE_USERPASS; |
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return cack; |
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} else { |
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if (psUser && userLen) { |
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memset(psUser, 0, userLen--); |
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memcpy(psUser, var->var_data, |
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ntohs(var->var_sb.val) > userLen ? userLen : ntohs(var->var_sb.val)); |
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} |
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pos += MQTTHDR_VAR_SIZEOF(var); |
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} |
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} |
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if (flg.password) { |
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var = (mqtthdr_var_t*) pos; |
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len -= MQTTHDR_VAR_SIZEOF(var); |
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if (len < 0 || var->var_sb.sb.l > 12) { |
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mqtt_SetErr(EINVAL, "Unexpected EOM at Password %d", len); |
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cack.retcode = MQTT_RETCODE_REFUSE_USERPASS; |
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return cack; |
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} else { |
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if (psPass && passLen) { |
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memset(psPass, 0, passLen--); |
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memcpy(psPass, var->var_data, |
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ntohs(var->var_sb.val) > passLen ? passLen : ntohs(var->var_sb.val)); |
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} |
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pos += MQTTHDR_VAR_SIZEOF(var); |
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} |
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} |
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flg.reserved = 0; |
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cack.reserved = flg.flags; |
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cack.retcode = MQTT_RETCODE_ACCEPTED; |
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return cack; |
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} |
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/* |
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* mqtt_readCONNACK() Read CONNACK message |
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* |
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* @buf = Message buffer |
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* return: -1 error or >-1 CONNECT message return code |
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*/ |
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u_char |
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mqtt_readCONNACK(mqtt_msg_t * __restrict buf) |
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{ |
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int len, ret; |
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struct mqtthdr *hdr; |
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mqtthdr_connack_t *ack; |
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caddr_t pos; |
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if (!buf || !buf->msg_base || !buf->msg_len) |
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return (u_char) -1; |
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hdr = _mqtt_readHEADER(buf, MQTT_TYPE_CONNACK, &ret, &len); |
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if (!hdr) |
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return (u_char) -1; |
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if (len < sizeof(mqtthdr_connack_t)) { |
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mqtt_SetErr(EINVAL, "Short message length %d", len); |
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return (u_char) -1; |
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} else { |
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pos = buf->msg_base + ret + 1; |
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ack = (mqtthdr_connack_t*) pos; |
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} |
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if (ack->retcode > MQTT_RETCODE_DENIED) { |
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mqtt_SetErr(EINVAL, "Invalid retcode %u", ack->retcode); |
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return (u_char) -1; |
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} |
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return ack->retcode; |
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} |
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/* |
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* mqtt_readDISCONNECT() Read DISCONNECT message |
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* |
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* @buf = Message buffer |
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* return: -1 error, 0 ok, >0 undefined result |
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*/ |
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int |
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mqtt_readDISCONNECT(mqtt_msg_t * __restrict buf) |
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{ |
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int len, ret; |
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struct mqtthdr *hdr; |
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hdr = _mqtt_readHEADER(buf, MQTT_TYPE_DISCONNECT, &ret, &len); |
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if (!hdr || ret != 1) |
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return -1; |
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return len; |
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} |
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/* |
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* mqtt_readPINGREQ() Read PINGREQ message |
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* |
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* @buf = Message buffer |
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* return: -1 error, 0 ok, >0 undefined result |
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*/ |
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int |
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mqtt_readPINGREQ(mqtt_msg_t * __restrict buf) |
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{ |
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int len, ret; |
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struct mqtthdr *hdr; |
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hdr = _mqtt_readHEADER(buf, MQTT_TYPE_PINGREQ, &ret, &len); |
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if (!hdr || ret != 1) |
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return -1; |
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return len; |
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} |
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/* |
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* mqtt_readPINGRESP() Read PINGRESP message |
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* |
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* @buf = Message buffer |
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* return: -1 error, 0 ok, >0 undefined result |
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*/ |
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int |
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mqtt_readPINGRESP(mqtt_msg_t * __restrict buf) |
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{ |
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int len, ret; |
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struct mqtthdr *hdr; |
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hdr = _mqtt_readHEADER(buf, MQTT_TYPE_PINGRESP, &ret, &len); |
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if (!hdr || ret != 1) |
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return -1; |
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return len; |
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} |
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#endif |
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