99 lines
3.7 KiB
C++
99 lines
3.7 KiB
C++
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// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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//
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// Defines command line flags for widevine_encryption.
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#include "app/widevine_encryption_flags.h"
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#include "base/strings/string_number_conversions.h"
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DEFINE_bool(enable_widevine_encryption,
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false,
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"Enable encryption with Widevine license server/proxy. User should "
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"provide either AES signing key (--aes_signing_key, "
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"--aes_signing_iv) or RSA signing key (--rsa_signing_key_path).");
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DEFINE_string(key_server_url, "", "Key server url.");
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DEFINE_string(content_id, "", "Content Id.");
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DEFINE_int32(max_sd_pixels,
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768 * 576,
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"If the video track has more pixels per frame than max_sd_pixels, "
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"it is considered as HD, SD otherwise. Default: 768 * 576.");
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DEFINE_string(signer, "", "The name of the signer.");
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DEFINE_string(aes_signing_key,
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"",
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"AES signing key in hex string. --aes_signing_iv is required. "
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"Exclusive with --rsa_signing_key_path.");
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DEFINE_string(aes_signing_iv,
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"",
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"AES signing iv in hex string.");
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DEFINE_string(rsa_signing_key_path,
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"",
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"Stores PKCS#1 RSA private key for request signing. Exclusive "
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"with --aes_signing_key.");
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DEFINE_int32(crypto_period_duration,
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0,
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"Crypto period duration in seconds. If it is non-zero, key "
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"rotation is enabled.");
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namespace {
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static bool IsNotEmptyWithWidevineEncryption(const char* flag_name,
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const std::string& flag_value) {
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return FLAGS_enable_widevine_encryption ? !flag_value.empty() : true;
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}
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static bool IsPositive(const char* flag_name, int flag_value) {
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return flag_value > 0;
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}
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static bool VerifyAesRsaKey(const char* flag_name,
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const std::string& flag_value) {
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if (!FLAGS_enable_widevine_encryption)
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return true;
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const std::string flag_name_str = flag_name;
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if (flag_name_str == "aes_signing_iv") {
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if (!FLAGS_aes_signing_key.empty() && flag_value.empty()) {
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fprintf(stderr,
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"ERROR: --aes_signing_iv is required for --aes_signing_key.\n");
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return false;
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}
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} else if (flag_name_str == "rsa_signing_key_path") {
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if (FLAGS_aes_signing_key.empty() && flag_value.empty()) {
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fprintf(stderr,
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"ERROR: --aes_signing_key or --rsa_signing_key_path is "
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"required.\n");
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return false;
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}
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if (!FLAGS_aes_signing_key.empty() && !flag_value.empty()) {
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fprintf(stderr,
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"ERROR: --aes_signing_key and --rsa_signing_key_path are "
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"exclusive.\n");
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return false;
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}
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}
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return true;
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}
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bool dummy_key_server_url_validator =
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google::RegisterFlagValidator(&FLAGS_key_server_url,
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&IsNotEmptyWithWidevineEncryption);
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bool dummy_content_id_validator =
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google::RegisterFlagValidator(&FLAGS_content_id,
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&IsNotEmptyWithWidevineEncryption);
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bool dummy_track_type_validator =
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google::RegisterFlagValidator(&FLAGS_max_sd_pixels, &IsPositive);
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bool dummy_signer_validator =
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google::RegisterFlagValidator(&FLAGS_signer,
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&IsNotEmptyWithWidevineEncryption);
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bool dummy_aes_iv_validator =
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google::RegisterFlagValidator(&FLAGS_aes_signing_iv,
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&VerifyAesRsaKey);
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bool dummy_rsa_key_file_validator =
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google::RegisterFlagValidator(&FLAGS_rsa_signing_key_path,
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&VerifyAesRsaKey);
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} // anonymous namespace
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