--- mqtt/inc/Attic/aitmqtt.h 2011/11/07 16:55:46 1.1.1.1.2.4 +++ mqtt/inc/Attic/aitmqtt.h 2011/11/21 12:16:11 1.1.1.1.2.6 @@ -93,12 +93,13 @@ typedef union { l:8; } sb; unsigned short val; -} mqtthdr_val_t; +} mqtt_v_t; typedef struct { - mqtthdr_val_t var_sb; + mqtt_v_t var_sb; unsigned char var_data[0]; } __packed mqtthdr_var_t; +#define MQTTHDR_VAR_SIZEOF(x) (assert((x)), sizeof(mqtt_v_t) + ntohs((x)->var_sb.val)) typedef unsigned char mqtthdr_protover_t; typedef unsigned char mqtthdr_retcode_t; @@ -114,6 +115,14 @@ typedef struct { } __packed mqtthdr_connflgs_t; +/* MQTT Message buffer */ + +typedef struct { + void *msg_base; + unsigned short msg_len; +} mqtt_msg_t; + + // ------------------------------------------------------- // mqtt_GetErrno() Get error code of last operation inline int mqtt_GetErrno(); @@ -123,6 +132,27 @@ inline const char *mqtt_GetError(); /* + * mqtt_msgAlloc() Allocate memory for MQTT Message + * @len = >0 Allocate buffer with length + * return: NULL error or Message, after use must call mqtt_msgFree() with all!=0 + */ +inline mqtt_msg_t *mqtt_msgAlloc(unsigned short len); +/* + * mqtt_msgFree() Free MQTT message + * @msg = Message buffer + * @all = !=0 Destroy entire message, if MQTT Message allocated with mqtt_msgAlloc() + * return: none + */ +inline void mqtt_msgFree(mqtt_msg_t ** __restrict msg, int all); +/* + * mqtt_msgRealloc() Reallocate MQTT message buffer + * @msg = MQTT message + * @len = new length + * return: -1 error or >-1 old buffer length + */ +inline int mqtt_msgRealloc(mqtt_msg_t * __restrict msg, unsigned short len); + +/* * mqtt_encodeLen() Encode number to MQTT length field * @num = number for encode * return: -1 error or >-1 length @@ -148,6 +178,25 @@ inline char mqtt_sizeLen(unsigned int len); * return: NULL error or != ok variable, must be free after use! */ inline mqtthdr_var_t *mqtt_str2var(const unsigned char *csStr, unsigned short strLen); + +/* + * mqtt_msgCONNECT() Create CONNECT message + * + * @buf = Message buffer + * @csConnID = ConnectID + * @csUser = Username if !=NULL + * @csPass = Password for Username, only if csUser is set + * @csWillTopic = Will Topic if !=NULL Will Flags set into message + * @csWillMessage = Will Message, may be NULL + * @ClrSess = Clear Session subscriptions after disconnect + * @WillQOS = Will QOS if csWillTopic is set + * @WillRetain = Will Retain Will Message if csWillTopic is set + * return: -1 error or >-1 message size for send + */ +int mqtt_msgCONNECT(mqtt_msg_t * __restrict buf, const char *csConnID, + const char *csUser, const char *csPass, + const char *csWillTopic, const char *csWillMessage, + char ClrSess, char WillQOS, char WillRetain); #endif