// Copyright 2020 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//      http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include <stdio.h>

#include <stdint.h>

#include <libexif/exif-loader.h>

void content_func(ExifEntry *entry, void *user_data) {

  char buf[10000];

  exif_entry_get_value(entry, buf, sizeof(buf));

}

void data_func(ExifContent *content, void *user_data) {

  exif_content_foreach_entry(content, content_func, NULL);

}

static void

test_exif_data (ExifData *d) {

  unsigned int i, c;

  char v[1024], *p;

  ExifMnoteData *md;

  md = exif_data_get_mnote_data (d);

  if (!md) {

    return;

  }

  exif_mnote_data_ref (md);

  exif_mnote_data_unref (md);

  c = exif_mnote_data_count (md);

  for (i = 0; i < c; i++) {

    const char *name = exif_mnote_data_get_name (md, i);

    if (!name) {

      break;

    }

    exif_mnote_data_get_title (md, i);

    exif_mnote_data_get_description (md, i);

    exif_mnote_data_get_value (md, i, v, sizeof (v));

  }

}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

  ExifLoader *loader = exif_loader_new();

  ExifData *exif_data;

  if (!loader) {

    return 0;

  }

  exif_loader_write(loader, const_cast<unsigned char*>(data), size);

  exif_data = exif_loader_get_data(loader);

  if(!exif_data) {

    exif_loader_unref(loader);

    return 0;

  }

  exif_data_foreach_content(exif_data, data_func, NULL);

  test_exif_data (exif_data);

  exif_loader_unref(loader);

  exif_data_unref(exif_data);

  return 0;

}