# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//testing/libfuzzer/fuzzer_test.gni")
import("//third_party/protobuf/proto_library.gni")

# To download the corpus for local fuzzing use:
# gsutil -m rsync \
#   gs://clusterfuzz-corpus/libfuzzer/zucchini_disassembler_win32_fuzzer \
#   components/zucchini/fuzzing/testdata/disassembler_win32_fuzzer
fuzzer_test("zucchini_disassembler_win32_fuzzer") {
  sources = [
    "disassembler_win32_fuzzer.cc",
  ]
  deps = [
    "//base",
    "//components/zucchini:zucchini_lib",
  ]
}

fuzzer_test("zucchini_patch_fuzzer") {
  sources = [
    "patch_fuzzer.cc",
  ]
  deps = [
    "//base",
    "//components/zucchini:zucchini_lib",
  ]
  seed_corpus = "testdata/patch_fuzzer"
}

proto_library("zucchini_file_pair_proto") {
  sources = [
    "file_pair.proto",
  ]
}

# Ensure protoc is available.
# Disabled on Windows due to crbug/844826.
if (current_toolchain == host_toolchain && !is_win) {
  # Raw Apply Fuzzer:
  action("zucchini_raw_apply_seed") {
    script = "generate_fuzzer_data.py"

    args = [
      "--raw",
      "old_eventlog_provider.dll",  # <old_file>
      "new_eventlog_provider.dll",  # <new_file>
      "eventlog_provider.patch",  # <patch_file> (temporary)

      # <output_dir>
      rebase_path("$target_gen_dir/testdata/raw_apply_fuzzer", root_build_dir),
    ]

    # Files depended upon.
    sources = [
      "create_seed_file_pair.py",
      "testdata/new_eventlog_provider.dll",
      "testdata/old_eventlog_provider.dll",
    ]

    # Outputs: necessary for validation.
    outputs = [
      "$target_gen_dir/testdata/raw_apply_fuzzer/seed_proto.bin",
    ]
    deps = [
      "//components/zucchini:zucchini",
      "//third_party/protobuf:protoc",
    ]
  }

  fuzzer_test("zucchini_raw_apply_fuzzer") {
    sources = [
      "raw_gen_fuzzer.cc",
    ]
    deps = [
      ":zucchini_file_pair_proto",
      "//base",
      "//components/zucchini:zucchini_lib",
      "//third_party/libprotobuf-mutator",
    ]
    seed_corpus = "$target_gen_dir/testdata/raw_apply_fuzzer"
    seed_corpus_deps = [ ":zucchini_raw_apply_seed" ]
  }

  # Raw Gen Fuzzer:
  fuzzer_test("zucchini_raw_gen_fuzzer") {
    sources = [
      "raw_gen_fuzzer.cc",
    ]
    deps = [
      ":zucchini_file_pair_proto",
      "//base",
      "//components/zucchini:zucchini_lib",
      "//third_party/libprotobuf-mutator",
    ]
    seed_corpus = "testdata/raw_gen_fuzzer"
  }
}