943db74fc7
1. qcloud has a great revolution, the protocol has been changed to implement data template, so the old TencentCloud_SDK developed by us will not work fine now(mqtt still works, but data template will not works fine for recently created product/devices). 2. I merge the official qlcoud sdk(include both the iot-hub and iot-explorer sdk) into the componet/conectivity to support new protocol of data template 3. iot-hub sdk, supply the fundamental iot protocol(like mqtt coap, etc.) iot-explorer sdk, supply the high level service like data template based on mqtt 4. To know how it works, see qcloud_iot_explorer_sdk_data_template、qcloud_iot_hub_sdk_mqtt example(keil project in board\TencentOS_tiny_EVB_MX_Plus\KEIL\qcloud_iot_explorer_sdk_data_template and board\TencentOS_tiny_EVB_MX_Plus\KEIL\qcloud_iot_hub_sdk_mqtt)
267 lines
7.6 KiB
C
267 lines
7.6 KiB
C
/*
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* Copyright (c) 2017-2019 Tencent Group. All rights reserved.
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* License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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/**
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* Edit by shockcao@tencent.com 2018/3/15
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include "json_parser.h"
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#include "lite-utils.h"
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#include "qcloud_iot_export_log.h"
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#define json_debug Log_d
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typedef struct JSON_NV {
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int nLen;
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int vLen;
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int vType;
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char *pN;
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char *pV;
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} JSON_NV;
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char *json_get_object(int type, char *str)
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{
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char *pos = 0;
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char ch = (type == JSOBJECT) ? '{' : '[';
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while (str != 0 && *str != 0) {
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if (*str == ' ') {
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str++;
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continue;
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}
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pos = (*str == ch) ? str : 0;
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break;
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}
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return pos;
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}
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char *json_get_next_object(int type, char *str, char **key, int *key_len,
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char **val, int *val_len, int *val_type)
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{
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char JsonMark[JSTYPEMAX][2] = { { '\"', '\"' }, { '{', '}' }, { '[', ']' }, { '0', ' ' } };
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int iMarkDepth = 0, iValueType = JSNONE, iNameLen = 0, iValueLen = 0;
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char *p_cName = 0, *p_cValue = 0, *p_cPos = str;
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char lastchr = ' ';
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if (type == JSOBJECT) {
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/* Get Key */
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p_cPos = strchr(p_cPos, '"');
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if (!p_cPos) {
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return 0;
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}
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p_cName = ++p_cPos;
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p_cPos = strchr(p_cPos, '"');
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if (!p_cPos) {
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return 0;
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}
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iNameLen = p_cPos - p_cName;
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/* Get Value */
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p_cPos = strchr(p_cPos, ':');
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}
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while (p_cPos && *p_cPos) {
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if (*p_cPos == '"') {
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iValueType = JSSTRING;
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lastchr = *p_cPos;
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p_cValue = ++p_cPos;
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break;
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} else if (*p_cPos == '{') {
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iValueType = JSOBJECT;
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p_cValue = p_cPos++;
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break;
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} else if (*p_cPos == '[') {
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iValueType = JSARRAY;
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p_cValue = p_cPos++;
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break;
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} else if ((*p_cPos == '-') || (*p_cPos >= '0' && *p_cPos <= '9')) {
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iValueType = JSNUMBER;
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p_cValue = p_cPos++;
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break;
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} else if (*p_cPos == 't' || *p_cPos == 'T' || *p_cPos == 'f' || *p_cPos == 'F') {
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iValueType = JSBOOLEAN;
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p_cValue = p_cPos;
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break;
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}else if (*p_cPos == 'n' || *p_cPos == 'N') {
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iValueType = JSNULL;
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p_cValue = p_cPos;
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break;
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}
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p_cPos++;
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}
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while (p_cPos && *p_cPos && iValueType > JSNONE) {
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if (iValueType == JSBOOLEAN) {
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int len = strlen(p_cValue);
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if ((*p_cValue == 't' || *p_cValue == 'T') && len >= 4
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&& (!strncmp(p_cValue, "true", 4)
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|| !strncmp(p_cValue, "TRUE", 4))) {
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iValueLen = 4;
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p_cPos = p_cValue + iValueLen;
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break;
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} else if ((*p_cValue == 'f' || *p_cValue == 'F') && len >= 5
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&& (!strncmp(p_cValue, "false", 5)
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|| !strncmp(p_cValue, "FALSE", 5))) {
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iValueLen = 5;
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p_cPos = p_cValue + iValueLen;
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break;
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}
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} else if (iValueType == JSNULL) { //support null/NULL
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int nlen = strlen(p_cValue);
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if ((*p_cValue == 'n' || *p_cValue == 'N') && nlen >= 4
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&& (!strncmp(p_cValue, "null", 4)
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|| !strncmp(p_cValue, "NULL", 4))) {
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iValueLen = 4;
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p_cPos = p_cValue + iValueLen;
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break;
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}
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}
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else if (iValueType == JSNUMBER) {
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//if (*p_cPos < '0' || *p_cPos > '9') {
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if ((*p_cPos < '0' || *p_cPos > '9')&&(*p_cPos != '.')) { //support float
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iValueLen = p_cPos - p_cValue;
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break;
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}
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}
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else if (*p_cPos == JsonMark[iValueType][1]) {
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if (iMarkDepth == 0) {
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iValueLen = p_cPos - p_cValue + (iValueType == JSSTRING ? 0 : 1);
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p_cPos++;
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if((iValueType == JSSTRING) && (lastchr == '\\')){
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lastchr = *p_cPos;
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continue;
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}else{
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break;
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}
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} else {
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iMarkDepth--;
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}
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} else if (*p_cPos == JsonMark[iValueType][0]) {
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iMarkDepth++;
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}
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lastchr = *p_cPos;
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p_cPos++;
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}
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if (type == JSOBJECT) {
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*key = p_cName;
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*key_len = iNameLen;
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}
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*val = p_cValue;
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*val_len = iValueLen;
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*val_type = iValueType;
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if (iValueType == JSSTRING) {
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return p_cValue + iValueLen + 1;
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} else {
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return p_cValue + iValueLen;
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}
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}
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int json_parse_name_value(char *p_cJsonStr, int iStrLen, json_parse_cb pfnCB, void *p_CBData)
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{
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char *pos = 0, *key = 0, *val = 0;
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int klen = 0, vlen = 0, vtype = 0;
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char last_char = 0;
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int ret = JSON_RESULT_ERR;
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if (p_cJsonStr == NULL || iStrLen == 0 || pfnCB == NULL) {
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return ret;
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}
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if (iStrLen != strlen(p_cJsonStr)) {
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Log_w("Backup last_char since %d != %d", iStrLen, (int)strlen(p_cJsonStr));
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backup_json_str_last_char(p_cJsonStr, iStrLen, last_char);
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}
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json_object_for_each_kv(p_cJsonStr, pos, key, klen, val, vlen, vtype) {
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if (key && klen && val && vlen) {
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ret = JSON_RESULT_OK;
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if (JSON_PARSE_FINISH == pfnCB(key, klen, val, vlen, vtype, p_CBData)) {
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break;
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}
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}
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}
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if (iStrLen != strlen(p_cJsonStr)) {
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restore_json_str_last_char(p_cJsonStr, iStrLen, last_char);
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}
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return ret;
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}
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int json_get_value_by_name_cb(char *p_cName, int iNameLen, char *p_cValue, int iValueLen, int iValueType,
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void *p_CBData)
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{
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JSON_NV *p_stNameValue = (JSON_NV *)p_CBData;
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#if (JSON_DEBUG == 1)
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int i;
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if (p_cName) {
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json_debug("Name:");
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for (i = 0; i < iNameLen; i++) {
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json_debug("%c", *(p_cName + i));
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}
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}
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if (p_cValue) {
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json_debug("Value:");
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for (i = 0; i < iValueLen; i++) {
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json_debug("%c", *(p_cValue + i));
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}
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}
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#endif
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if ((iNameLen == p_stNameValue->nLen) && !strncmp(p_cName, p_stNameValue->pN, p_stNameValue->nLen)) {
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p_stNameValue->pV = p_cValue;
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p_stNameValue->vLen = iValueLen;
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p_stNameValue->vType = iValueType;
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return JSON_PARSE_FINISH;
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} else {
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return JSON_PARSE_OK;
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}
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}
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char *json_get_value_by_name(char *p_cJsonStr, int iStrLen, char *p_cName, int *p_iValueLen, int *p_iValueType)
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{
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JSON_NV stNV;
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memset(&stNV, 0, sizeof(stNV));
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stNV.pN = p_cName;
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stNV.nLen = strlen(p_cName);
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if (JSON_RESULT_OK == json_parse_name_value(p_cJsonStr, iStrLen, json_get_value_by_name_cb, (void *)&stNV)) {
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if (p_iValueLen) {
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*p_iValueLen = stNV.vLen;
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}
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if (p_iValueType) {
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*p_iValueType = stNV.vType;
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if(JSNULL == stNV.vType){
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stNV.pV = NULL;
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}
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}
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}
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return stNV.pV;
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}
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