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/*
We're testing that reading corrupt TIFF files doesn't cause any memory issues,
and that the operation gracefully fails (i.e. gdImageCreateFromTiffPtr() returns
NULL).
*/
#include "gd.h"
#include "gdtest.h"
static void check_file(char *basename);
static size_t read_test_file(char **buffer, char *basename);
int main()
{
check_file("tiff_invalid_read_1.tiff");
check_file("tiff_invalid_read_2.tiff");
check_file("tiff_invalid_read_3.tiff");
return gdNumFailures();
}
static void check_file(char *basename)
{
gdImagePtr im;
char *buffer = NULL;
size_t size;
size = read_test_file(&buffer, basename);
im = gdImageCreateFromTiffPtr(size, (void *) buffer);
gdTestAssert(im == NULL);
if (buffer != NULL) {
free(buffer);
}
}
static size_t read_test_file(char **buffer, char *basename)
{
char *filename;
FILE *fp;
size_t exp_size = 0, act_size = -1;
filename = gdTestFilePath2("tiff", basename);
fp = fopen(filename, "rb");
if (!gdTestAssert(fp != NULL)) goto fail3;
if (fseek(fp, 0, SEEK_END) != 0) {
gdTestAssert(1==0); // only increase num failures used as return values in main
goto fail2;
}
exp_size = ftell(fp);
if (!gdTestAssert(exp_size > 0)) {
gdTestAssert(1==0); // only increase num failures used as return values in main
goto fail2;
}
if (fseek(fp, 0, SEEK_SET) != 0) {
gdTestAssert(1==0); // only increase num failures used as return values in main
goto fail2;
}
*buffer = malloc(exp_size);
if (gdTestAssert(*buffer != NULL)) {
act_size = fread(*buffer, sizeof(**buffer), exp_size, fp);
gdTestAssert(act_size == exp_size);
}
fail2:
fclose(fp);
fail3:
free(filename);
return act_size;
}
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