BUILD.gn

# Copyright 2021 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
#
#    https://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.

import("//testing/test.gni")
import("//third_party/protobuf/proto_library.gni")

config("library_impl_config") {
  # Build targets that contain private_membership implementation need this
  # macro to be defined in order to correctly export symbols when is_component_build
  # is true.
  # For more info see: base/private_membership_export.h.
  defines = [ "IS_PRIVATE_MEMBERSHIP_LIBRARY_IMPL" ]
}

config("private_membership_config") {
  # TODO(crbug.com/1072732) Reenable the deprecated warning, after updating the upstream.
  cflags = [
    "-Wno-deprecated-declarations",
    "-Wno-defaulted-function-deleted",
  ]
  defines = []
  if (is_win) {
    # TODO(crbug.com/1302848): Re-enable after solving other linking issues.
    # defines += [ "PRIVATE_MEMBERSHIP_WIN_EXPORT" ]
  }
  if (is_component_build) {
    defines += [
      # Build targets inside private_membership will need this macro to
      # be defined in order to correctly export symbols when is_component_build
      # is true.
      # For more info see: base/private_membership_export.h.
      "PRIVATE_MEMBERSHIP_ENABLE_SYMBOL_EXPORT",
    ]
  }
  include_dirs = [
    # Allow includes to be prefixed with private_membership/src/ in case it is not an
    # immediate subdirectory of the top-level.
    "src",

    # Just like the directory of private_membership/src has been 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/private_membership/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,
  ]
}

proto_library("private_membership_proto") {
  sources = [
    "src/internal/testing/regression_test_data/regression_test_data.proto",
    "src/private_membership.proto",
    "src/private_membership_rlwe.proto",
  ]
  import_dirs = [ "//third_party/shell-encryption/src" ]
  extra_configs = [
    ":private_membership_config",
    ":library_impl_config",
  ]

  proto_in_dir = "src/"
  cc_generator_options = "dllexport_decl=PRIVATE_MEMBERSHIP_EXPORT:"
  cc_include = "third_party/private_membership/base/private_membership_export.h"
  component_build_force_source_set = true

  link_deps = [ "//third_party/shell-encryption:serialization_proto" ]
}

if (is_chromeos_ash) {
  component("private_membership") {
    public_configs = [ ":private_membership_config" ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [
      "//build/config/compiler:no_chromium_code",
      ":library_impl_config",
    ]

    public = [
      "base/private_membership_export.h",
      "src/internal/aes_ctr_256_with_fixed_iv.h",
      "src/internal/constants.h",
      "src/internal/crypto_utils.h",
      "src/internal/encrypted_bucket_id.h",
      "src/internal/hashed_bucket_id.h",
      "src/internal/id_utils.h",
      "src/internal/oprf_utils.h",
      "src/internal/rlwe_id_utils.h",
      "src/internal/rlwe_params.h",
      "src/internal/utils.h",
      "src/private_membership_rlwe_client.h",
    ]
    sources = [
      "src/internal/aes_ctr_256_with_fixed_iv.cc",
      "src/internal/crypto_utils.cc",
      "src/internal/encrypted_bucket_id.cc",
      "src/internal/hashed_bucket_id.cc",
      "src/internal/id_utils.cc",
      "src/internal/oprf_utils.cc",
      "src/internal/rlwe_id_utils.cc",
      "src/internal/rlwe_params.cc",
      "src/internal/utils.cc",
      "src/private_membership_rlwe_client.cc",
    ]
    public_deps = [
      ":private_membership_proto",
      "//base",
      "//third_party/abseil-cpp:absl",
      "//third_party/boringssl",
      "//third_party/private-join-and-compute/src:ec_commutative_cipher",
      "//third_party/shell-encryption:shell_encryption",
    ]
  }
}

if (is_chromeos_ash) {
  test("private_membership_unittests") {
    testonly = true
    public_configs = [ ":private_membership_config" ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [
      "//build/config/compiler:no_chromium_code",
      ":library_impl_config",
    ]
    public = [ "src/internal/testing/constants.h" ]
    sources = [
      "src/internal/aes_ctr_256_with_fixed_iv_test.cc",
      "src/internal/crypto_utils_test.cc",
      "src/internal/encrypted_bucket_id_test.cc",

      # TODO(crbug.com/1298087): Re-enable these test files to comply with
      # Chromium.
      #"src/internal/encrypted_buckets_test.cc",
      #"src/internal/hashed_bucket_id_test.cc",
      #"src/internal/hashed_buckets_test.cc",

      "src/internal/id_utils_test.cc",
      "src/internal/oprf_utils_test.cc",
      "src/internal/rlwe_id_utils_test.cc",
      "src/internal/utils_test.cc",
      "src/private_membership_rlwe_client_regression_test.cc",
    ]
    public_deps = [
      ":private_membership",
      ":private_membership_proto",
      "//testing/gmock:gmock",
      "//testing/gtest:gtest_main",
      "//third_party/shell-encryption:shell_encryption_test_library",
    ]
  }
}