322 lines
7.4 KiB
C
322 lines
7.4 KiB
C
/****************************************************************************
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* This file is part of the project AqHome.
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* AqHome (c) by 2023 Martin Preuss, all rights reserved.
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*
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* The license for this file can be found in the file COPYING which you
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* should have received along with this file.
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****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "aqhome/mqtt/endpoint2_mqtt_p.h"
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#include "aqhome/mqtt/msg_mqtt_connect.h"
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#include "aqhome/mqtt/msg_mqtt_publish.h"
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#include <gwenhywfar/endpoint2_msgio.h>
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#include <gwenhywfar/debug.h>
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#include <gwenhywfar/inherit.h>
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#define AQH_ENDPOINT2_MQTT_DEFAULT_KEEPALIVE 600
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GWEN_INHERIT(GWEN_MSG_ENDPOINT, AQH_ENDPOINT2_MQTT)
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/* ------------------------------------------------------------------------------------------------
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* forward declarations
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* ------------------------------------------------------------------------------------------------
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*/
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static void GWENHYWFAR_CB _freeData(void *bp, void *p);
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static int _getBytesNeededForMessage(GWEN_MSG_ENDPOINT2 *ep, GWEN_MSG *msg);
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static int _calcAndSetPayloadSizeAndOffset(GWEN_MSG *msg);
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/* ------------------------------------------------------------------------------------------------
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* implementations
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* ------------------------------------------------------------------------------------------------
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*/
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void AQH_MqttEndpoint2_Extend(GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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GWEN_NEW_OBJECT(AQH_ENDPOINT2_MQTT, xep);
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GWEN_INHERIT_SETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep, xep, _freeData);
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xep->keepAliveTime=AQH_ENDPOINT2_MQTT_DEFAULT_KEEPALIVE;
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GWEN_MsgIoEndpoint2_SetGetNeededBytesFn(ep, _getBytesNeededForMessage);
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}
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}
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void GWENHYWFAR_CB _freeData(GWEN_UNUSED void *bp, void *p)
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{
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AQH_ENDPOINT2_MQTT *xep;
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xep=(AQH_ENDPOINT2_MQTT*) p;
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free(xep->clientId);
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free(xep->topicPrefix);
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GWEN_FREE_OBJECT(xep);
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}
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const char *AQH_MqttEndpoint2_GetClientId(const GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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return xep->clientId;
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}
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}
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return NULL;
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}
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void AQH_MqttEndpoint2_SetClientId(GWEN_MSG_ENDPOINT2 *ep, const char *s)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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free(xep->clientId);
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xep->clientId=s?strdup(s):NULL;
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}
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}
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}
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const char *AQH_MqttEndpoint2_GetTopicPrefix(const GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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return xep->topicPrefix;
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}
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}
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return NULL;
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}
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void AQH_MqttEndpoint2_SetTopicPrefix(GWEN_MSG_ENDPOINT2 *ep, const char *s)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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free(xep->topicPrefix);
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xep->topicPrefix=s?strdup(s):NULL;
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}
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}
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}
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uint16_t AQH_MqttEndpoint2_GetNextPacketId(const GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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return ++(xep->lastPacketId);
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}
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}
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return 0;
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}
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uint16_t AQH_MqttEndpoint2_GetKeepAliveTime(const GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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return xep->keepAliveTime;
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}
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}
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return 0;
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}
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void AQH_MqttEndpoint2_SetKeepAliveTime(GWEN_MSG_ENDPOINT2 *ep, uint16_t i)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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xep->keepAliveTime=i;
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}
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}
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}
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int _getBytesNeededForMessage(GWEN_UNUSED GWEN_MSG_ENDPOINT2 *ep, GWEN_MSG *msg)
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{
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uint32_t bytesInMsg;
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bytesInMsg=GWEN_Msg_GetBytesInBuffer(msg);
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if (bytesInMsg<2) {
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DBG_INFO(AQH_LOGDOMAIN, "Header not yet complete");
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return (int) (2-bytesInMsg);
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}
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if (!(GWEN_Msg_GetFlags(msg) & GWEN_MSG_FLAGS_PAYLOADINFO_SET))
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_calcAndSetPayloadSizeAndOffset(msg);
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if (GWEN_Msg_GetFlags(msg) & GWEN_MSG_FLAGS_PAYLOADINFO_SET) {
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uint32_t msgLength;
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msgLength=GWEN_Msg_GetParsedPayloadOffset(msg)+GWEN_Msg_GetParsedPayloadSize(msg);
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return (int)(msgLength-bytesInMsg);
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}
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else {
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DBG_INFO(AQH_LOGDOMAIN, "Size field not complete, requesting another byte");
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return 1;
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}
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}
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int _calcAndSetPayloadSizeAndOffset(GWEN_MSG *msg)
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{
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int remainingBytesInBuffer;
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uint32_t mqttRemainingLength=0;
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remainingBytesInBuffer=GWEN_Msg_GetBytesInBuffer(msg);
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if (remainingBytesInBuffer>1) {
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const uint8_t *ptr;
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int idx;
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int shift=0;
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ptr=GWEN_Msg_GetConstBuffer(msg);
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idx=1;
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remainingBytesInBuffer--;
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while(remainingBytesInBuffer) {
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uint8_t len;
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len=ptr[idx];
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mqttRemainingLength+=(len & 0x7f)<<shift;
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if (!(len & 0x80)) {
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/* last byte of size */
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GWEN_Msg_SetParsedPayloadSize(msg, mqttRemainingLength);
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GWEN_Msg_SetParsedPayloadOffset(msg, idx+1); /* payload follows at next byte */
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GWEN_Msg_AddFlags(msg, GWEN_MSG_FLAGS_PAYLOADINFO_SET);
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return 1; /* size successfully determined */
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}
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shift+=7;
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idx++;
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remainingBytesInBuffer--;
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}
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}
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return 0;
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}
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GWEN_MSG *AQH_MqttEndpoint2_CreateMsgConnect(GWEN_MSG_ENDPOINT2 *ep)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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DBG_INFO(AQH_LOGDOMAIN, "Sending connect msg");
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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return GWEN_ConnectMqttMsg_new("MQTT", 4, 0, xep->keepAliveTime, xep->clientId, NULL, NULL);
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}
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}
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return NULL;
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}
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GWEN_MSG *AQH_MqttEndpoint2_CreateMsgPublishDouble(GWEN_MSG_ENDPOINT2 *ep, uint32_t uid, int valueId, const char *valuePath, double v)
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{
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char numBuf[16];
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snprintf(numBuf, sizeof(numBuf)-1, "%f", v);
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numBuf[sizeof(numBuf)-1]=0;
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return AQH_MqttEndpoint2_CreateMsgPublishString(ep, uid, valueId, valuePath, numBuf);
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}
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GWEN_MSG *AQH_MqttEndpoint2_CreateMsgPublishInt(GWEN_MSG_ENDPOINT2 *ep, uint32_t uid, int valueId, const char *valuePath, int v)
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{
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char numBuf[16];
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snprintf(numBuf, sizeof(numBuf)-1, "%d", v);
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numBuf[sizeof(numBuf)-1]=0;
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return AQH_MqttEndpoint2_CreateMsgPublishString(ep, uid, valueId, valuePath, numBuf);
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}
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GWEN_MSG *AQH_MqttEndpoint2_CreateMsgPublishString(GWEN_MSG_ENDPOINT2 *ep,
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uint32_t uid,
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int valueId,
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const char *valuePath,
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const char *v)
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{
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if (ep) {
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AQH_ENDPOINT2_MQTT *xep;
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xep=GWEN_INHERIT_GETDATA(GWEN_MSG_ENDPOINT2, AQH_ENDPOINT2_MQTT, ep);
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if (xep) {
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GWEN_BUFFER *bufTopic;
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GWEN_MSG *pubMsg;
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bufTopic=GWEN_Buffer_new(0, 64, 0, 1);
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if (valueId>0)
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GWEN_Buffer_AppendArgs(bufTopic, "%s/%08x/%d/%s",
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xep->topicPrefix,
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uid,
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valueId,
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valuePath);
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else
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GWEN_Buffer_AppendArgs(bufTopic, "%s/%08x/%s",
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xep->topicPrefix,
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uid,
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valuePath);
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DBG_INFO(AQH_LOGDOMAIN, "MQTT PUBLISH %s: %s", GWEN_Buffer_GetStart(bufTopic), v);
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pubMsg=AQH_PublishMqttMsg_new(0, 0, GWEN_Buffer_GetStart(bufTopic), (const uint8_t*) v, strlen(v));
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GWEN_Buffer_free(bufTopic);
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if (pubMsg==NULL) {
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DBG_INFO(AQH_LOGDOMAIN, "here");
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}
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return pubMsg;
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}
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}
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return NULL;
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}
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