mirror of https://github.com/google/oss-fuzz.git
37 lines
886 B
C
37 lines
886 B
C
#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "gif_lib.h"
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struct gifUserData {
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size_t gifLen;
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uint8_t *gifData;
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};
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int stub_input_reader (GifFileType *gifFileType, GifByteType *gifByteType, int len) {
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struct gifUserData *gud = gifFileType->UserData;
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if (gud->gifLen == 0)
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return 0;
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int read_len = (len > gud->gifLen ? gud->gifLen : len);
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memcpy(gifByteType, gud->gifData, read_len);
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gud->gifData += read_len;
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gud->gifLen -= read_len;
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return read_len;
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}
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int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
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{
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GifFileType *GifFile;
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int Error;
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uint8_t *gifData = (uint8_t *)malloc(Size);
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memcpy(gifData, Data, Size);
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struct gifUserData gUData = {Size, gifData};
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GifFile = DGifOpen((void *)&gUData, stub_input_reader, &Error);
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if (GifFile != NULL) {
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DGifSlurp(GifFile);
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DGifCloseFile(GifFile, &Error);
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}
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free(gifData);
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return 0;
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} |