BUILD.gn

# Copyright 2020 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("//build/config/chromeos/ui_mode.gni")
import("//testing/test.gni")
import("//third_party/protobuf/proto_library.gni")

config("shell_encryption_config1") {
  # TODO(crbug.com/1095122) Reenable the warning for unused functions and typedef.
  cflags = [
    "-Wno-unused-local-typedef",
    "-Wno-unused-function",
    "-Wno-sign-compare",
    "-Wno-ignored-qualifiers",
  ]

  defines = []
  if (is_component_build) {
    defines = [
      # Build targets inside shell-encryption will need this macro to
      # be defined in order to correctly export symbols when is_component_build
      # is true.
      # For more info see: base/shell_encryption_export.h.
      "SHELL_ENCRYPTION_ENABLE_SYMBOL_EXPORT",
    ]
  }

  include_dirs = [
    # Allow includes to be prefixed with shell-encryption/src/ in case it is not an
    # immediate subdirectory of the top-level.
    "src",

    # Allow includes to be prefixed with shell-encryption/ in case it is not an
    # immediate subdirectory of the top-level. That's mainly is being used for
    # glog/logging.h includes.
    ".",

    # Just like the root shell-encryption directory is added to include path, the
    # corresponding directory tree with generated files needs to be added too.
    # Note: this path does not change depending on the current target, e.g.
    # it is always "//gen/third_party/shell-encryption/src" when building with Chromium.
    # See also: http://cs.chromium.org/?q=%5C"default_include_dirs
    # https://gn.googlesource.com/gn/+/master/docs/reference.md#target_gen_dir"
    target_gen_dir,
  ]
}

# Protos.
proto_library("serialization_proto") {
  sources = [ "src/serialization.proto" ]
  proto_in_dir = "src/"

  cc_generator_options = "dllexport_decl=SHELL_ENCRYPTION_EXPORT:"
  cc_include = "third_party/shell-encryption/base/shell_encryption_export.h"
  component_build_force_source_set = true
}

proto_library("coefficient_polynomial_proto") {
  sources = [ "src/testing/coefficient_polynomial.proto" ]
  proto_in_dir = "src/testing/"

  cc_generator_options = "dllexport_decl=SHELL_ENCRYPTION_EXPORT:"
  cc_include = "third_party/shell-encryption/base/shell_encryption_export.h"
  component_build_force_source_set = true
}

# SHELL lib.
if (is_chromeos_ash) {
  component("shell_encryption") {
    public_configs = [ ":shell_encryption_config1" ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    public = [
      "base/shell_encryption_export.h",
      "base/shell_encryption_export_template.h",
      "glog/logging.h",
      "src/bits_util.h",
      "src/constants.h",
      "src/context.h",
      "src/error_params.h",
      "src/galois_key.h",
      "src/int256.h",
      "src/integral_types.h",
      "src/montgomery.h",
      "src/ntt_parameters.h",
      "src/polynomial.h",
      "src/prng/chacha_prng.h",
      "src/prng/chacha_prng_util.h",
      "src/prng/integral_prng_types.h",
      "src/prng/prng.h",
      "src/prng/single_thread_chacha_prng.h",
      "src/relinearization_key.h",
      "src/sample_error.h",
      "src/status_macros.h",
      "src/statusor.h",
      "src/symmetric_encryption.h",
      "src/symmetric_encryption_with_prng.h",
      "src/transcription.h",
    ]
    sources = [
      "src/int256.cc",
      "src/montgomery.cc",
      "src/ntt_parameters.cc",
      "src/prng/chacha_prng.cc",
      "src/prng/chacha_prng_util.cc",
      "src/prng/single_thread_chacha_prng.cc",
      "src/relinearization_key.cc",
    ]
    public_deps = [
      ":serialization_proto",
      "//base:base",
      "//third_party/abseil-cpp:absl",
      "//third_party/boringssl:boringssl",
      "//third_party/protobuf:protobuf_lite",
    ]
  }
}

if (is_chromeos_ash) {
  source_set("shell_encryption_test_library") {
    testonly = true
    public_configs = [ ":shell_encryption_config1" ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    public = [
      "src/prng/integral_prng_testing_types.h",
      "src/testing/coefficient_polynomial.h",
      "src/testing/coefficient_polynomial_ciphertext.h",
      "src/testing/parameters.h",
      "src/testing/protobuf_matchers.h",
      "src/testing/status_matchers.h",
      "src/testing/status_testing.h",
      "src/testing/testing_prng.h",
      "src/testing/testing_utils.h",
    ]
    public_deps = [
      ":coefficient_polynomial_proto",
      ":serialization_proto",
      ":shell_encryption",
      "//testing/gmock:gmock",
      "//testing/gtest:gtest",
    ]
  }

  test("shell_encryption_unittests") {
    testonly = true
    public_configs = [ ":shell_encryption_config1" ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    sources = [
      "src/bits_util_test.cc",
      "src/context_test.cc",
      "src/error_params_test.cc",
      "src/galois_key_test.cc",
      "src/int256_test.cc",
      "src/montgomery_test.cc",
      "src/ntt_parameters_test.cc",
      "src/polynomial_test.cc",
      "src/prng/prng_test.cc",
      "src/prng/single_thread_chacha_prng_test.cc",
      "src/relinearization_key_test.cc",
      "src/sample_error_test.cc",
      "src/status_macros_test.cc",
      "src/symmetric_encryption_test.cc",
      "src/symmetric_encryption_with_prng_test.cc",
      "src/testing/coefficient_polynomial_ciphertext_test.cc",
      "src/testing/coefficient_polynomial_test.cc",
      "src/testing/protobuf_matchers_test.cc",
      "src/transcription_test.cc",
      "tests/run_all_unittests.cc",
    ]
    deps = [
      ":shell_encryption_test_library",
      "//base/test:test_support",
      "//testing/gtest",
    ]
  }
}