mirror of https://github.com/DaveGamble/cJSON
130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*
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Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include "fuzz-target.h"
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#include "../cJSON.h"
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static void minify(const unsigned char *data, size_t size)
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{
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unsigned char *copied_data = (unsigned char*)malloc(size);
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if (copied_data == NULL)
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{
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return;
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}
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memcpy(copied_data, data, size);
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cJSON_Minify((char*)copied_data);
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free(copied_data);
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return;
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}
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static void printing(cJSON *json, unsigned char format_setting, unsigned char buffered_setting)
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{
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unsigned char *printed = NULL;
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if (buffered_setting == '1')
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{
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printed = (unsigned char*)cJSON_PrintBuffered(json, 1, (format_setting == '1'));
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}
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else
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{
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if (format_setting == '1')
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{
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printed = (unsigned char*)cJSON_Print(json);
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}
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else
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{
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printed = (unsigned char*)cJSON_PrintUnformatted(json);
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}
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}
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if (printed != NULL)
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{
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free(printed);
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}
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}
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extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size)
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{
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unsigned char minify_setting = '\0'; /* minify instead of parsing */
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unsigned char require_zero_setting = '\0'; /* zero termination required */
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unsigned char format_setting = '\0'; /* formatted printing */
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unsigned char buffered_setting = '\0'; /* buffered printing */
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const size_t data_offset = 4;
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cJSON *json = NULL;
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/* don't work with NULL or without mode selector */
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if ((data == NULL) || (size < data_offset))
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{
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return 0;
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}
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/* get configuration from the beginning of the test case */
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minify_setting = data[0];
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require_zero_setting = data[1];
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format_setting = data[2];
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buffered_setting = data[3];
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/* check if settings are valid */
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if ((minify_setting != '0') && (minify_setting != '1'))
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{
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return 0;
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}
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if ((require_zero_setting != '0') && (require_zero_setting != '1'))
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{
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return 0;
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}
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if ((format_setting != '0') && (format_setting != '1'))
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{
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return 0;
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}
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if ((buffered_setting != '0') && (buffered_setting != '1'))
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{
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return 0;
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}
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if (minify_setting == '1')
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{
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minify(data + data_offset, size);
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return 0;
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}
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json = cJSON_ParseWithOpts((const char*)data + data_offset, NULL, (require_zero_setting == '1'));
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if (json == NULL)
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{
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return 0;
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}
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printing(json, format_setting, buffered_setting);
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free(json);
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return 0;
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}
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