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

# This file defines library targets and other auxillary definitions that
# are used for the resulting executable targets.

import("//common-mk/flatbuffer.gni")
import("//common-mk/generate-dbus-adaptors.gni")
import("//common-mk/generate-dbus-proxies.gni")
import("//common-mk/pkg_config.gni")
import("//common-mk/proto_library.gni")

config("target_defaults") {
  defines = [
    "USE_LVM_STATEFUL_PARTITION=${use.lvm_stateful_partition}",
    "USE_PINWEAVER=${use.pinweaver}",
    "USE_SELINUX=${use.selinux}",
    "USE_TPM_DYNAMIC=${use.tpm_dynamic}",
    "USE_TPM1=${use.tpm}",
    "USE_TPM2=${use.tpm2}",
    "USE_DOUBLE_EXTEND_PCR_ISSUE=${use.double_extend_pcr_issue}",
    "USE_MOUNT_OOP=${use.mount_oop}",
    "USE_USER_SESSION_ISOLATION=${use.user_session_isolation}",
    "USE_SLOW_MOUNT=${use.slow_mount}",
  ]
}

# Protobufs.
action("cryptohome-proto-external") {
  proto_out_dir = target_gen_dir
  dbus_proto_path = "${sysroot}/usr/include/chromeos/dbus/cryptohome"
  policy_proto_path = "${sysroot}/usr/include/proto"
  script = "external_proto_generator.py"
  inputs = [
    "${dbus_proto_path}/fido.proto",
    "${dbus_proto_path}/key.proto",
    "${dbus_proto_path}/rpc.proto",
    "${dbus_proto_path}/signed_secret.proto",
    "${dbus_proto_path}/UserDataAuth.proto",
    "${policy_proto_path}/install_attributes.proto",
  ]
  outputs =
      process_file_template(inputs, [ "${proto_out_dir}/{{source_file_part}}" ])
  args = [
           "-o",
           "${target_gen_dir}",
         ] + inputs
}

pkg_config("cryptohome-proto_config") {
  pkg_deps = [ "protobuf" ]
}

flatbuffer("cryptohome-flatbuffers") {
  flatc_out_dir = "include/cryptohome"
  flatc_args = [
    # Default flatbuffer flags used in Chrome OS.
    "--cpp",
    "--keep-prefix",

    # Generate code for enums using C++11 scoped enums.
    "--scoped-enums",
  ]
  if (use.test) {
    # Tests use Flatbuffers Object based API (which is more convenient but
    # doesn't allow to use a secure allocator).
    flatc_args += [ "--gen-object-api" ]
  }
  sources = [
    "../flatbuffer_schemas/user_secret_stash_container.fbs",
    "../flatbuffer_schemas/user_secret_stash_payload.fbs",
  ]
}

proto_library("cryptohome-proto") {
  proto_in_dir = ".."
  proto_out_dir = "include/cryptohome"
  proto_lib_dirs = [ target_gen_dir ]

  # libcryptohome-proto.a is used by a shared_libary
  # object, so we need to build it with '-fPIC' instead of '-fPIE'.
  use_pic = true

  sources = [
    "${proto_in_dir}/attestation.proto",
    "${proto_in_dir}/boot_lockbox_key.proto",
    "${proto_in_dir}/fake_le_credential_metadata.proto",
    "${proto_in_dir}/hash_tree_leaf_data.proto",
    "${proto_in_dir}/signature_sealed_data.proto",
    "${proto_in_dir}/timestamp.proto",
    "${proto_in_dir}/tpm_status.proto",
    "${proto_in_dir}/vault_keyset.proto",
  ]
  all_dependent_configs = [ ":cryptohome-proto_config" ]
  public_deps = [ ":cryptohome-generated-proto" ]
}

# Files generated by cryptohome-proto-external.
# TODO(oka): merge this with cryptohome-proto allowing proto_library to take
# sources in different directories.
proto_library("cryptohome-generated-proto") {
  proto_in_dir = target_gen_dir
  proto_out_dir = "include/cryptohome"

  # libcryptohome-proto.a is used by a shared_libary
  # object, so we need to build it with '-fPIC' instead of '-fPIE'.
  use_pic = true
  sources = get_target_outputs(":cryptohome-proto-external")
  public_deps = [ ":cryptohome-proto-external" ]
}

generate_dbus_proxies("cryptohome-key-delegate-proxies") {
  proxy_output_file = "include/cryptohome_key_delegate/dbus-proxies.h"
  sources =
      [ "../dbus_bindings/org.chromium.CryptohomeKeyDelegateInterface.xml" ]
}

pkg_config("libcrosplatform_dependent_config") {
  pkg_deps = [
    "libbrillo",
    "libchrome",
    "libecryptfs",
    "libmetrics",
    "openssl",
    "vboot_host",
  ]
}

# Common objects.
static_library("libcrosplatform") {
  sources = [
    "../crypto/aes.cc",
    "../crypto/big_num_util.cc",
    "../crypto/ecdh_hkdf.cc",
    "../crypto/elliptic_curve.cc",
    "../crypto/error_util.cc",
    "../crypto/hkdf.cc",
    "../crypto/hmac.cc",
    "../crypto/rsa.cc",
    "../crypto/scrypt.cc",
    "../crypto/secure_blob_util.cc",
    "../crypto/sha.cc",
    "../cryptohome_metrics.cc",
    "../cryptorecovery/recovery_crypto.cc",
    "../cryptorecovery/recovery_crypto_hsm_cbor_serialization.cc",
    "../cryptorecovery/recovery_crypto_util.h",
    "../dircrypto_util.cc",
    "../libscrypt_compat.cc",
    "../platform.cc",
    "../storage/encrypted_container/backing_device_factory.cc",
    "../storage/encrypted_container/dmcrypt_container.cc",
    "../storage/encrypted_container/ecryptfs_container.cc",
    "../storage/encrypted_container/encrypted_container_factory.cc",
    "../storage/encrypted_container/fscrypt_container.cc",
    "../storage/encrypted_container/loopback_device.cc",
    "../user_secret_stash.cc",
  ]
  configs += [ ":target_defaults" ]
  libs = [
    "keyutils",
    "rootdev",
    "secure_erase_file",
  ]
  if (use.selinux) {
    libs += [ "selinux" ]
  }
  defines = [ "USE_LVM_STATEFUL_PARTIITON=${use.lvm_stateful_partition}" ]
  if (use.lvm_stateful_partition) {
    sources +=
        [ "../storage/encrypted_container/logical_volume_backing_device.cc" ]
  }
  all_dependent_configs = [ ":libcrosplatform_dependent_config" ]
  deps = [ ":cryptohome-proto" ]
}

pkg_config("libcrostpm_dependent_config") {
  pkg_deps = [
    "libbrillo",
    "libchrome",
    "openssl",
  ]
}

static_library("libcrostpm") {
  sources = [
    "../auth_session.cc",
    "../challenge_credential_auth_block.cc",
    "../crc8.c",
    "../crypto.cc",
    "../crypto_error.cc",
    "../cryptohome_key_loader.cc",
    "../cryptohome_keys_manager.cc",
    "../cryptohome_recovery_auth_block.cc",
    "../cryptohome_rsa_key_loader.cc",
    "../double_wrapped_compat_auth_block.cc",
    "../firmware_management_parameters.cc",
    "../fwmp_checker_owner_index.cc",
    "../fwmp_checker_platform_index.cc",
    "../install_attributes.cc",
    "../key_objects.cc",
    "../le_credential_manager_impl.cc",
    "../libscrypt_compat_auth_block.cc",
    "../lockbox.cc",
    "../password_auth_factor.cc",
    "../persistent_lookup_table.cc",
    "../pin_weaver_auth_block.cc",
    "../pkcs11_init.cc",
    "../pkcs11_keystore.cc",
    "../sign_in_hash_tree.cc",
    "../tpm.cc",
    "../tpm_auth_block_utils.cc",
    "../tpm_bound_to_pcr_auth_block.cc",
    "../tpm_not_bound_to_pcr_auth_block.cc",
    "../vault_keyset.cc",
  ]
  defines = [ "PLATFORM_FWMP_INDEX=${use.generic_tpm2}" ]
  configs += [ ":target_defaults" ]
  libs = [
    "chaps",
    "hwsec",
    "hwsec-foundation",
    "tpm_manager",
  ]
  all_dependent_configs = [ ":libcrostpm_dependent_config" ]

  # TODO(crbug.com/1082873): Remove after fixing usage of protobuf
  # deprecated declarations.
  cflags_cc = [ "-Wno-error=deprecated-declarations" ]
  public_deps = [ ":cryptohome-proto" ]
  if (use.tpm2) {
    sources += [
      "../pinweaver_le_credential_backend.cc",
      "../signature_sealing_backend_tpm2_impl.cc",
      "../tpm2_impl.cc",
    ]
    libs += [ "trunks" ]
  }
  if (use.tpm) {
    sources += [
      "../signature_sealing_backend_tpm1_impl.cc",
      "../tpm1_static_utils.cc",
      "../tpm_impl.cc",
      "../tpm_metrics.cc",
    ]
    libs += [ "tspi" ]
  }
  deps = [
    ":cryptohome-flatbuffers",
    ":libcrosplatform",
  ]
}

generate_dbus_adaptors("userdataauth_adaptors") {
  dbus_adaptors_out_dir = "include/dbus_adaptors"
  dbus_service_config = "../dbus_bindings/dbus-service-config-UserDataAuth.json"
  sources = [ "../dbus_bindings/org.chromium.UserDataAuth.xml" ]
}

generate_dbus_adaptors("cryptohome_adaptors") {
  dbus_adaptors_out_dir = "include/dbus_adaptors"
  dbus_service_config = "../dbus_bindings/dbus-service-config.json"
  sources = [ "../dbus_bindings/org.chromium.CryptohomeInterface.xml" ]
}

pkg_config("libcryptohome_dependent_config") {
  pkg_deps = [
    "libbrillo",
    "libchrome",
  ]
  if (use.tpm2) {
    pkg_deps += [ "libbootlockbox-client" ]
  }
}

static_library("libcryptohome") {
  sources = [
    "../challenge_credentials/challenge_credentials_constants.cc",
    "../challenge_credentials/challenge_credentials_decrypt_operation.cc",
    "../challenge_credentials/challenge_credentials_generate_new_operation.cc",
    "../challenge_credentials/challenge_credentials_helper_impl.cc",
    "../challenge_credentials/challenge_credentials_operation.cc",
    "../challenge_credentials/challenge_credentials_verify_key_operation.cc",
    "../challenge_credentials/fido_utils.cc",
    "../chaps_client_factory.cc",
    "../cleanup/disk_cleanup.cc",
    "../cleanup/disk_cleanup_routines.cc",
    "../cleanup/low_disk_space_handler.cc",
    "../cleanup/user_oldest_activity_timestamp_cache.cc",
    "../credentials.cc",
    "../dircrypto_data_migrator/atomic_flag.cc",
    "../dircrypto_data_migrator/migration_helper.cc",
    "../filesystem_layout.cc",
    "../fingerprint_manager.cc",
    "../key_challenge_service_factory_impl.cc",
    "../key_challenge_service_impl.cc",
    "../keyset_management.cc",
    "../lockbox-cache.cc",
    "../scrypt_verifier.cc",
    "../service_userdataauth.cc",
    "../stateful_recovery.cc",
    "../storage/arc_disk_quota.cc",
    "../storage/cryptohome_vault.cc",
    "../storage/cryptohome_vault_factory.cc",
    "../storage/file_system_keyset.cc",
    "../storage/homedirs.cc",
    "../storage/mount.cc",
    "../storage/mount_constants.cc",
    "../storage/mount_factory.cc",
    "../storage/mount_helper.cc",
    "../storage/mount_namespace.cc",
    "../storage/mount_stack.cc",
    "../storage/mount_utils.cc",
    "../storage/out_of_process_mount_helper.cc",
    "../user_session.cc",
    "../userdataauth.cc",
    "../vault_keyset_factory.cc",
  ]
  configs += [
    ":cryptohome-proto_config",
    ":target_defaults",
  ]

  # The generated dbus headers use "register".
  cflags = [ "-Wno-deprecated-register" ]
  libs = [
    "attestation",
    "biod_proxy",
    "chaps",
    "hwsec",
    "policy",
    "tpm_manager",
  ]
  all_dependent_configs = [ ":libcryptohome_dependent_config" ]
  deps = [
    ":cryptohome-key-delegate-proxies",
    ":cryptohome-proto",
    ":libcrosplatform",
    ":libcrostpm",
    ":namespace-mounter-ipc-proto",
    ":userdataauth_adaptors",
  ]
}

generate_dbus_adaptors("bootlockbox-adaptors") {
  dbus_service_config = "../dbus_adaptors/dbus-service-config.json"
  dbus_adaptors_out_dir = "include/dbus_adaptors"
  sources = [ "../dbus_adaptors/org.chromium.BootLockboxInterface.xml" ]
}

if (use.tpm2) {
  pkg_config("libnvram-boot-lockbox_dependent_config") {
    pkg_deps = [
      "libbootlockbox-client",
      "libbrillo",
      "libchrome",
    ]
  }

  static_library("libnvram-boot-lockbox") {
    sources = [
      "../bootlockbox/nvram_boot_lockbox.cc",
      "../bootlockbox/tpm2_nvspace_utility.cc",
    ]
    configs += [ ":target_defaults" ]
    all_dependent_configs = [ ":libnvram-boot-lockbox_dependent_config" ]
    deps = [
      ":cryptohome-proto",
      ":libcrosplatform",
    ]
  }
}

# cryptohome <-> cryptohome-namespace-mounter IPC proto.
proto_library("namespace-mounter-ipc-proto") {
  proto_in_dir = "../cryptohome_namespace_mounter"
  proto_out_dir = "include/cryptohome"

  sources = [ "${proto_in_dir}/namespace_mounter_ipc.proto" ]
  configs = [ ":cryptohome-proto_config" ]
}

pkg_config("libfido_config") {
  pkg_deps = [
    "libbrillo",
    "libchrome",
    "openssl",
  ]
}

static_library("libfido") {
  sources = [
    "../fido/attested_credential_data.cc",
    "../fido/authenticator_data.cc",
    "../fido/ec_public_key.cc",
    "../fido/fido_constants.cc",
    "../fido/fido_parsing_utils.cc",
    "../fido/public_key.cc",
  ]
  configs += [ ":target_defaults" ]
  libs = [ "cbor" ]
  all_dependent_configs = [ ":libfido_config" ]
}