cairo/fuzzing/surface_write_png_fuzzer.c

#include "cairo-boilerplate.h"
#include "fuzzer_temp_file.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
    cairo_surface_t *image;
    cairo_surface_t *surface;
    cairo_status_t status;
    cairo_format_t format;

    char *tmpfile = fuzzer_get_tmpfile(data, size);
    image = cairo_image_surface_create_from_png(tmpfile);
    status = cairo_surface_status (image);
    if (status != CAIRO_STATUS_SUCCESS) {
        fuzzer_release_tmpfile(tmpfile);
        return 0;
    }

    format = cairo_image_surface_get_format(image);
    surface = cairo_image_surface_create_for_data((unsigned char*)data, format, 1, 1, size);
    status = cairo_surface_status (surface);
    if (status != CAIRO_STATUS_SUCCESS) {
        cairo_surface_destroy(image);
        fuzzer_release_tmpfile(tmpfile);
        return 0;
    }
    cairo_surface_write_to_png(surface, tmpfile);

    cairo_surface_destroy(surface);
    cairo_surface_destroy(image);
    fuzzer_release_tmpfile(tmpfile);
    return 0;
}