mirror of
https://gitee.com/Lyon1998/pikapython.git
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288 lines
12 KiB
C
288 lines
12 KiB
C
/*******************************************************************************
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* Copyright (c) 2014 IBM Corp.
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*
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* and Eclipse Distribution License v1.0 which accompany this distribution.
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*
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* The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* and the Eclipse Distribution License is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* Contributors:
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* Ian Craggs - initial API and implementation and/or initial documentation
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*******************************************************************************/
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#include "MQTTPacket.h"
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#include "StackTrace.h"
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#include <string.h>
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const char* MQTTPacket_names[] = {
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"RESERVED", "CONNECT", "CONNACK", "PUBLISH", "PUBACK",
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"PUBREC", "PUBREL", "PUBCOMP", "SUBSCRIBE", "SUBACK",
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"UNSUBSCRIBE", "UNSUBACK", "PINGREQ", "PINGRESP", "DISCONNECT"};
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const char* MQTTPacket_getName(unsigned short packetid) {
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return MQTTPacket_names[packetid];
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}
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int MQTTStringFormat_connect(char* strbuf,
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int strbuflen,
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MQTTPacket_connectData* data) {
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int strindex = 0;
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strindex = snprintf(strbuf, strbuflen,
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"CONNECT MQTT version %d, client id %.*s, clean "
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"session %d, keep alive %d",
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(int)data->MQTTVersion, data->clientID.lenstring.len,
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data->clientID.lenstring.data, (int)data->cleansession,
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data->keepAliveInterval);
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if (data->willFlag)
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strindex += snprintf(
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&strbuf[strindex], strbuflen - strindex,
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", will QoS %d, will retain %d, will topic %.*s, will message %.*s",
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data->will.qos, data->will.retained,
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data->will.topicName.lenstring.len,
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data->will.topicName.lenstring.data,
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data->will.message.lenstring.len,
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data->will.message.lenstring.data);
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if (data->username.lenstring.data && data->username.lenstring.len > 0)
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strindex += snprintf(&strbuf[strindex], strbuflen - strindex,
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", user name %.*s", data->username.lenstring.len,
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data->username.lenstring.data);
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if (data->password.lenstring.data && data->password.lenstring.len > 0)
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strindex += snprintf(&strbuf[strindex], strbuflen - strindex,
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", password %.*s", data->password.lenstring.len,
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data->password.lenstring.data);
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return strindex;
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}
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int MQTTStringFormat_connack(char* strbuf,
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int strbuflen,
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unsigned char connack_rc,
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unsigned char sessionPresent) {
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int strindex =
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snprintf(strbuf, strbuflen, "CONNACK session present %d, rc %d",
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sessionPresent, connack_rc);
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return strindex;
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}
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int MQTTStringFormat_publish(char* strbuf,
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int strbuflen,
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unsigned char dup,
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int qos,
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unsigned char retained,
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unsigned short packetid,
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MQTTString topicName,
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unsigned char* payload,
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int payloadlen) {
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int strindex =
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snprintf(strbuf, strbuflen,
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"PUBLISH dup %d, QoS %d, retained %d, packet id %d, topic "
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"%.*s, payload length %d, payload %.*s",
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dup, qos, retained, packetid,
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(topicName.lenstring.len < 20) ? topicName.lenstring.len : 20,
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topicName.lenstring.data, payloadlen,
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(payloadlen < 20) ? payloadlen : 20, payload);
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return strindex;
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}
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int MQTTStringFormat_ack(char* strbuf,
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int strbuflen,
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unsigned char packettype,
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unsigned char dup,
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unsigned short packetid) {
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int strindex = snprintf(strbuf, strbuflen, "%s, packet id %d",
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MQTTPacket_names[packettype], packetid);
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if (dup)
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strindex +=
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snprintf(strbuf + strindex, strbuflen - strindex, ", dup %d", dup);
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return strindex;
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}
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int MQTTStringFormat_subscribe(char* strbuf,
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int strbuflen,
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unsigned char dup,
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unsigned short packetid,
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int count,
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MQTTString topicFilters[],
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int requestedQoSs[]) {
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return snprintf(strbuf, strbuflen,
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"SUBSCRIBE dup %d, packet id %d count %d topic %.*s qos %d",
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dup, packetid, count, topicFilters[0].lenstring.len,
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topicFilters[0].lenstring.data, requestedQoSs[0]);
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}
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int MQTTStringFormat_suback(char* strbuf,
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int strbuflen,
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unsigned short packetid,
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int count,
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int* grantedQoSs) {
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return snprintf(strbuf, strbuflen,
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"SUBACK packet id %d count %d granted qos %d", packetid,
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count, grantedQoSs[0]);
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}
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int MQTTStringFormat_unsubscribe(char* strbuf,
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int strbuflen,
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unsigned char dup,
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unsigned short packetid,
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int count,
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MQTTString topicFilters[]) {
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return snprintf(strbuf, strbuflen,
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"UNSUBSCRIBE dup %d, packet id %d count %d topic %.*s", dup,
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packetid, count, topicFilters[0].lenstring.len,
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topicFilters[0].lenstring.data);
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}
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#if defined(MQTT_CLIENT)
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char* MQTTFormat_toClientString(char* strbuf,
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int strbuflen,
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unsigned char* buf,
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int buflen) {
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int index = 0;
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int rem_length = 0;
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MQTTHeader header = {0};
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int strindex = 0;
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header.byte = buf[index++];
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index += MQTTPacket_decodeBuf(&buf[index], &rem_length);
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switch (header.bits.type) {
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case CONNACK: {
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unsigned char sessionPresent, connack_rc;
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if (MQTTDeserialize_connack(&sessionPresent, &connack_rc, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_connack(strbuf, strbuflen,
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connack_rc, sessionPresent);
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} break;
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case PUBLISH: {
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unsigned char dup, retained, *payload;
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unsigned short packetid;
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int qos, payloadlen;
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MQTTString topicName = MQTTString_initializer;
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if (MQTTDeserialize_publish(&dup, &qos, &retained, &packetid,
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&topicName, &payload, &payloadlen, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_publish(
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strbuf, strbuflen, dup, qos, retained, packetid, topicName,
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payload, payloadlen);
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} break;
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case PUBACK:
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case PUBREC:
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case PUBREL:
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case PUBCOMP: {
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unsigned char packettype, dup;
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unsigned short packetid;
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if (MQTTDeserialize_ack(&packettype, &dup, &packetid, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_ack(strbuf, strbuflen, packettype,
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dup, packetid);
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} break;
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case SUBACK: {
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unsigned short packetid;
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int maxcount = 1, count = 0;
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int grantedQoSs[1];
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if (MQTTDeserialize_suback(&packetid, maxcount, &count, grantedQoSs,
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buf, buflen) == 1)
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strindex = MQTTStringFormat_suback(strbuf, strbuflen, packetid,
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count, grantedQoSs);
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} break;
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case UNSUBACK: {
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unsigned short packetid;
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if (MQTTDeserialize_unsuback(&packetid, buf, buflen) == 1)
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strindex = MQTTStringFormat_ack(strbuf, strbuflen, UNSUBACK, 0,
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packetid);
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} break;
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case PINGREQ:
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case PINGRESP:
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case DISCONNECT:
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strindex = snprintf(strbuf, strbuflen, "%s",
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MQTTPacket_names[header.bits.type]);
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break;
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}
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return strbuf;
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}
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#endif
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#if defined(MQTT_SERVER)
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char* MQTTFormat_toServerString(char* strbuf,
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int strbuflen,
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unsigned char* buf,
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int buflen) {
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int index = 0;
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int rem_length = 0;
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MQTTHeader header = {0};
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int strindex = 0;
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header.byte = buf[index++];
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index += MQTTPacket_decodeBuf(&buf[index], &rem_length);
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switch (header.bits.type) {
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case CONNECT: {
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MQTTPacket_connectData data;
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int rc;
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if ((rc = MQTTDeserialize_connect(&data, buf, buflen)) == 1)
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strindex = MQTTStringFormat_connect(strbuf, strbuflen, &data);
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} break;
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case PUBLISH: {
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unsigned char dup, retained, *payload;
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unsigned short packetid;
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int qos, payloadlen;
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MQTTString topicName = MQTTString_initializer;
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if (MQTTDeserialize_publish(&dup, &qos, &retained, &packetid,
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&topicName, &payload, &payloadlen, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_publish(
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strbuf, strbuflen, dup, qos, retained, packetid, topicName,
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payload, payloadlen);
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} break;
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case PUBACK:
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case PUBREC:
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case PUBREL:
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case PUBCOMP: {
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unsigned char packettype, dup;
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unsigned short packetid;
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if (MQTTDeserialize_ack(&packettype, &dup, &packetid, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_ack(strbuf, strbuflen, packettype,
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dup, packetid);
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} break;
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case SUBSCRIBE: {
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unsigned char dup;
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unsigned short packetid;
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int maxcount = 1, count = 0;
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MQTTString topicFilters[1];
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int requestedQoSs[1];
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if (MQTTDeserialize_subscribe(&dup, &packetid, maxcount, &count,
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topicFilters, requestedQoSs, buf,
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buflen) == 1)
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strindex = MQTTStringFormat_subscribe(
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strbuf, strbuflen, dup, packetid, count, topicFilters,
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requestedQoSs);
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;
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} break;
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case UNSUBSCRIBE: {
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unsigned char dup;
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unsigned short packetid;
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int maxcount = 1, count = 0;
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MQTTString topicFilters[1];
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if (MQTTDeserialize_unsubscribe(&dup, &packetid, maxcount, &count,
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topicFilters, buf, buflen) == 1)
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strindex = MQTTStringFormat_unsubscribe(
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strbuf, strbuflen, dup, packetid, count, topicFilters);
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} break;
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case PINGREQ:
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case PINGRESP:
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case DISCONNECT:
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strindex = snprintf(strbuf, strbuflen, "%s",
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MQTTPacket_names[header.bits.type]);
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break;
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}
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strbuf[strbuflen] = '\0';
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return strbuf;
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}
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#endif
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