# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/android/config.gni")
import("//build/config/arm.gni")
import("//build/config/compiler/compiler.gni")
import("//build/config/rust.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build_overrides/build.gni")
import("BUILD.generated.gni")
import("BUILD.generated_tests.gni")

if (enable_rust) {
  import("//build/rust/cargo_crate.gni")
  import("//build/rust/rust_bindgen.gni")
}

# Config for us and everybody else depending on BoringSSL.
config("external_config") {
  include_dirs = [ "src/include" ]
  if (is_component_build) {
    defines = [ "BORINGSSL_SHARED_LIBRARY" ]
  }
}

# The config used by the :boringssl component itself, and the fuzzer copies.
config("component_config") {
  visibility = [ ":*" ]  # Only targets in this file can depend on this.
  configs = [ ":internal_config" ]
  defines = [ "BORINGSSL_IMPLEMENTATION" ]
}

# This config is used by anything that consumes internal headers. Tests consume
# this rather than :component_config.
config("internal_config") {
  visibility = [ ":*" ]  # Only targets in this file can depend on this.
  defines = [
    "BORINGSSL_ALLOW_CXX_RUNTIME",
    "BORINGSSL_NO_STATIC_INITIALIZER",
    "OPENSSL_SMALL",
  ]
}

config("no_asm_config") {
  visibility = [ ":*" ]  # Only targets in this file can depend on this.
  defines = [ "OPENSSL_NO_ASM" ]
}

# TODO(crbug.com/1496373): having the headers in all_sources is hacky and should
# be fixed. It is caused by issues with the fuzzer target.
all_sources = crypto_sources + ssl_sources + pki_sources + pki_internal_headers
all_headers = crypto_headers + ssl_headers + pki_headers + pki_internal_headers

if (enable_rust) {
  rust_bindgen("raw_bssl_sys_bindings") {
    header = "src/rust/bssl-sys/wrapper.h"
    deps = [ ":boringssl" ]
    bindgen_flags = [
      "no-derive-default",
      "enable-function-attribute-detection",
      "use-core",
      "default-macro-constant-type=signed",

      # These two functions use `va_list`, which causes bindgen errors on
      # some platforms: i.e. "`extern` block uses type `[u64; 4]`, which is not
      # FFI-safe"
      "blocklist-function=BIO_vsnprintf",
      "blocklist-function=OPENSSL_vasprintf",
      "rustified-enum=point_conversion_form_t",
      "allowlist-file=.*[[:punct:]]include[[:punct:]]openssl[[:punct:]].*\\.h",
    ]
    wrap_static_fns = true
    visibility = [ ":*" ]  # private, should only be exposed through bssl_crypto
  }

  # Low level, bindgen generates system bindings to boringssl
  cargo_crate("bssl_sys") {
    crate_type = "rlib"
    crate_root = "src/rust/bssl-sys/src/lib.rs"
    sources = rust_bssl_sys
    edition = "2021"
    deps = [
      ":boringssl",
      ":raw_bssl_sys_bindings",
      ":raw_bssl_sys_bindings_static_fns",
    ]

    visibility = [
      ":*",  # private, should only be exposed through bssl_crypto
    ]
    bindgen_output = get_target_outputs(":raw_bssl_sys_bindings")
    inputs = bindgen_output
    rustenv =
        [ "BINDGEN_RS_FILE=" +
          rebase_path(bindgen_output[0], get_path_info(crate_root, "dir")) ]
  }

  # Rust bindings to boringssl
  cargo_crate("bssl_crypto") {
    crate_type = "rlib"
    crate_root = "src/rust/bssl-crypto/src/lib.rs"
    sources = rust_bssl_crypto
    edition = "2021"
    deps = [ ":bssl_sys" ]
  }
}

if (is_msan) {
  # MSan instrumentation is incompatible with assembly optimizations.
  # BoringSSL's GAS-compatible assembly knows how to detect MSan, but the NASM
  # assembly does not, so we check for MSan explicitly.
  source_set("boringssl_asm") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.

    public_configs = [ ":no_asm_config" ]
  }
} else if (is_win && (current_cpu == "x86" || current_cpu == "x64")) {
  # Windows' x86 and x86_64 assembly is built with NASM.
  import("//third_party/nasm/nasm_assemble.gni")
  nasm_assemble("boringssl_asm") {
    sources = crypto_sources_nasm
    visibility = [ ":*" ]  # Only targets in this file can depend on this.
  }
} else {
  # All other targets use GAS-compatible assembler. BoringSSL's assembly files
  # are all wrapped in processor checks for the corresponding target, so there
  # is no need to add target conditions in the build.
  source_set("boringssl_asm") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.

    sources = crypto_sources_asm
    include_dirs = [ "src/include" ]
  }
}

component("boringssl") {
  sources = all_sources
  public = all_headers
  friend = [ ":*" ]
  deps = [ "//third_party/boringssl/src/third_party/fiat:fiat_license" ]

  # Mark boringssl_asm as a public dependency so the OPENSSL_NO_ASM
  # config is forwarded to callers. In particular, boringssl_crypto_tests
  # requires it.
  public_deps = [ ":boringssl_asm" ]

  public_configs = [ ":external_config" ]
  configs += [ ":component_config" ]

  configs -= [ "//build/config/compiler:chromium_code" ]
  configs += [ "//build/config/compiler:no_chromium_code" ]

  if (is_nacl) {
    deps += [ "//native_client_sdk/src/libraries/nacl_io" ]
  }

  if (!is_debug && !(is_fuchsia && optimize_for_size)) {
    configs -= [ "//build/config/compiler:default_optimization" ]
    configs += [ "//build/config/compiler:optimize_max" ]
  }

  if (is_linux && is_component_build) {
    version_script = "boringssl.map"
    inputs = [ version_script ]
    ldflags = [ "-Wl,--version-script=" +
                rebase_path(version_script, root_build_dir) ]
  }
}

if (build_with_chromium) {
  import("//testing/libfuzzer/fuzzer_test.gni")

  source_set("test_support") {
    # TODO(crbug.com/boringssl/542): When we switch to the new source lists,
    # we will have separate variables for the sources and headers.
    sources = filter_exclude(test_support_sources, [ "*.h" ])
    public = filter_include(test_support_sources, [ "*.h" ])
    testonly = true

    # Test data in Chromium is complex. Swap out GetTestData with a
    # Chromium-specific implementation.
    sources += [ "test_data_chromium.cc" ]
    defines = [ "BORINGSSL_CUSTOM_GET_TEST_DATA" ]

    deps = [
      ":boringssl",
      "//base",
      "//testing/gtest",
    ]
  }

  # These targets are named "_tests" rather than "_test" to avoid colliding with
  # a historical "boringssl_ssl_test" target. This works around a bug with the
  # iOS build rules.

  bundle_data("boringssl_crypto_tests_bundle_data") {
    sources = crypto_test_data
    testonly = true
    outputs = [ "{{bundle_resources_dir}}/" +
                "{{source_root_relative_dir}}/{{source_file_part}}" ]
  }

  test("boringssl_crypto_tests") {
    sources = crypto_test_sources
    data = crypto_test_data
    deps = [
      ":boringssl",
      ":boringssl_crypto_tests_bundle_data",
      ":test_support",
      "//testing/gtest",
    ]

    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [
      ":internal_config",
      "//build/config/compiler:no_chromium_code",
    ]

    # Chromium infrastructure does not support GTest, only the //base wrapper.
    sources -= [ "src/crypto/test/gtest_main.cc" ]
    sources += [ "gtest_main_chromium.cc" ]
    deps += [ "//base/test:test_support" ]

    if (is_fuchsia) {
      additional_manifest_fragments =
          [ "//build/config/fuchsia/test/network.shard.test-cml" ]
    }
  }

  test("boringssl_ssl_tests") {
    sources = ssl_test_sources
    deps = [
      ":boringssl",
      ":test_support",
      "//testing/gtest",
    ]

    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [
      ":internal_config",
      "//build/config/compiler:no_chromium_code",
    ]

    # Chromium infrastructure does not support GTest, only the //base wrapper.
    sources -= [ "src/crypto/test/gtest_main.cc" ]
    sources += [ "gtest_main_chromium.cc" ]
    deps += [ "//base/test:test_support" ]
  }

  test("boringssl_pki_tests") {
    sources = pki_test_sources
    data = pki_test_data
    deps = [
      ":boringssl",
      ":test_support",
      "//testing/gtest",
    ]

    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [
      ":internal_config",
      "//build/config/compiler:no_chromium_code",
    ]

    # Chromium infrastructure does not support GTest, only the //base wrapper.
    sources -= [ "src/crypto/test/gtest_main.cc" ]
    sources += [ "gtest_main_chromium.cc" ]
    deps += [ "//base/test:test_support" ]
  }

  config("fuzzer_config") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.
    defines = [
      "BORINGSSL_UNSAFE_FUZZER_MODE",
      "BORINGSSL_UNSAFE_DETERMINISTIC_MODE",
    ]
  }

  # The same as boringssl, but builds with BORINGSSL_UNSAFE_FUZZER_MODE.
  # TODO(https://crbug.com/boringssl/258): Fold this into the normal target.
  component("boringssl_fuzzer") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.

    sources = all_sources
    deps = [ "//third_party/boringssl/src/third_party/fiat:fiat_license" ]

    # Mark boringssl_asm as a public dependency so the OPENSSL_NO_ASM
    # config is forwarded to callers. In particular, boringssl_crypto_tests
    # requires it.
    public_deps = [ ":boringssl_asm" ]

    public_configs = [
      ":external_config",
      ":fuzzer_config",
    ]
    configs += [ ":component_config" ]

    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]

    if (is_nacl) {
      deps += [ "//native_client_sdk/src/libraries/nacl_io" ]
    }
  }

  # Do not run the fuzzers on windows until 1477042 is fixed, they
  # make the fuzzer infrastructure exceed the windows command line
  # length.
  foreach(fuzzer, fuzzers) {
    fuzzer_test("boringssl_${fuzzer}_fuzzer") {
      sources = [
        "src/fuzz/${fuzzer}.cc",
        "src/ssl/test/fuzzer.h",
        "src/ssl/test/fuzzer_tags.h",
      ]
      additional_configs = [ ":internal_config" ]
      deps = [ ":boringssl_fuzzer" ]
      seed_corpus = "src/fuzz/${fuzzer}_corpus"

      if ("cert" == fuzzer) {
        libfuzzer_options = [ "max_len=3072" ]
      } else if ("client" == fuzzer) {
        libfuzzer_options = [ "max_len=20000" ]
      } else if ("pkcs8" == fuzzer) {
        libfuzzer_options = [ "max_len=2048" ]
      } else if ("privkey" == fuzzer) {
        libfuzzer_options = [ "max_len=2048" ]
      } else if ("read_pem" == fuzzer) {
        libfuzzer_options = [ "max_len=512" ]
      } else if ("session" == fuzzer) {
        libfuzzer_options = [ "max_len=8192" ]
      } else if ("server" == fuzzer) {
        libfuzzer_options = [ "max_len=4096" ]
      } else if ("spki" == fuzzer) {
        libfuzzer_options = [ "max_len=1024" ]
      } else if ("ssl_ctx_api" == fuzzer) {
        libfuzzer_options = [ "max_len=256" ]
      }
    }
  }

  config("fuzzer_no_fuzzer_mode_config") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.
    defines = [ "BORINGSSL_UNSAFE_DETERMINISTIC_MODE" ]
  }

  # The same as boringssl, but builds with BORINGSSL_UNSAFE_DETERMINISTIC_MODE.
  # TODO(https://crbug.com/boringssl/258): Fold this into the normal target.
  component("boringssl_fuzzer_no_fuzzer_mode") {
    visibility = [ ":*" ]  # Only targets in this file can depend on this.

    sources = all_sources
    deps = [ "//third_party/boringssl/src/third_party/fiat:fiat_license" ]

    # Mark boringssl_asm as a public dependency so the OPENSSL_NO_ASM
    # config is forwarded to callers. In particular, boringssl_crypto_tests
    # requires it.
    public_deps = [ ":boringssl_asm" ]

    public_configs = [
      ":external_config",
      ":fuzzer_no_fuzzer_mode_config",
    ]
    configs += [ ":component_config" ]

    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]

    if (is_nacl) {
      deps += [ "//native_client_sdk/src/libraries/nacl_io" ]
    }
  }

  fuzzer_test("boringssl_client_no_fuzzer_mode_fuzzer") {
    sources = [
      "src/fuzz/client.cc",
      "src/ssl/test/fuzzer.h",
      "src/ssl/test/fuzzer_tags.h",
    ]
    additional_configs = [ ":internal_config" ]
    deps = [ ":boringssl_fuzzer_no_fuzzer_mode" ]
    seed_corpus = "src/fuzz/client_corpus_no_fuzzer_mode"
  }

  fuzzer_test("boringssl_server_no_fuzzer_mode_fuzzer") {
    sources = [
      "src/fuzz/server.cc",
      "src/ssl/test/fuzzer.h",
      "src/ssl/test/fuzzer_tags.h",
    ]
    additional_configs = [ ":internal_config" ]
    deps = [ ":boringssl_fuzzer_no_fuzzer_mode" ]
    seed_corpus = "src/fuzz/server_corpus_no_fuzzer_mode"
  }
}