188 lines
6.9 KiB
C++
188 lines
6.9 KiB
C++
// 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 "packager/app/widevine_encryption_flags.h"
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#include "packager/app/validate_flag.h"
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#include "packager/base/logging.h"
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#include "packager/base/strings/string_piece.h"
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#include "packager/base/strings/string_util.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_bool(enable_widevine_decryption,
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false,
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"Enable decryption 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_bool(include_common_pssh,
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false,
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"When using Widevine encryption, include an additional v1 PSSH box "
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"for the common system ID that includes the key IDs. See: "
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"https://goo.gl/s8RIhr");
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DEFINE_string(key_server_url, "", "Key server url. Required for encryption and "
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"decryption");
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DEFINE_string(content_id, "", "Content Id (hex).");
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DEFINE_string(policy,
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"",
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"The name of a stored policy, which specifies DRM content "
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"rights.");
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DEFINE_int32(max_sd_pixels,
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768 * 576,
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"The video track is considered SD if its max pixels per frame is "
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"no higher than max_sd_pixels. Default: 442368 (768 x 576).");
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DEFINE_int32(max_hd_pixels,
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1920 * 1080,
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"The video track is considered HD if its max pixels per frame is "
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"higher than max_sd_pixels, but no higher than max_hd_pixels. "
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"Default: 2073600 (1920 x 1080).");
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DEFINE_int32(max_uhd1_pixels,
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4096 * 2160,
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"The video track is considered UHD1 if its max pixels per frame "
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"is higher than max_hd_pixels, but no higher than max_uhd1_pixels."
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" Otherwise it is UHD2. Default: 8847360 (4096 x 2160).");
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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 shaka {
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bool ValidateWidevineCryptoFlags() {
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bool success = true;
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const bool widevine_crypto =
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FLAGS_enable_widevine_encryption || FLAGS_enable_widevine_decryption;
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const char widevine_crypto_label[] =
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"--enable_widevine_encryption/decryption";
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// key_server_url and signer (optional) are associated with
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// enable_widevine_encryption and enable_widevine_descryption.
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if (!ValidateFlag("key_server_url",
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FLAGS_key_server_url,
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widevine_crypto,
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false,
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widevine_crypto_label)) {
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success = false;
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}
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if (!ValidateFlag("signer",
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FLAGS_signer,
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widevine_crypto,
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true,
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widevine_crypto_label)) {
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success = false;
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}
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if (widevine_crypto && FLAGS_signer.empty() &&
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base::StartsWith(base::StringPiece(FLAGS_key_server_url), "http",
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base::CompareCase::INSENSITIVE_ASCII)) {
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LOG(WARNING) << "--signer is likely required with "
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"--enable_widevine_encryption/decryption.";
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}
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const char widevine_encryption_label[] = "--enable_widevine_encryption";
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// content_id and policy (optional) are associated with
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// enable_widevine_encryption.
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if (!ValidateFlag("content_id",
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FLAGS_content_id,
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FLAGS_enable_widevine_encryption,
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false,
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widevine_encryption_label)) {
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success = false;
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}
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if (!ValidateFlag("policy",
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FLAGS_policy,
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FLAGS_enable_widevine_encryption,
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true,
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widevine_encryption_label)) {
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success = false;
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}
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if (FLAGS_include_common_pssh && !FLAGS_enable_widevine_encryption) {
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PrintError("--include_common_pssh is only valid with "
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"--enable_widevine_encryption");
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success = false;
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}
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if (FLAGS_max_sd_pixels <= 0) {
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PrintError("--max_sd_pixels must be positive.");
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success = false;
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}
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if (FLAGS_max_hd_pixels <= 0) {
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PrintError("--max_hd_pixels must be positive.");
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success = false;
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}
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if (FLAGS_max_uhd1_pixels <= 0) {
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PrintError("--max_uhd1_pixels must be positive.");
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success = false;
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}
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if (FLAGS_max_hd_pixels <= FLAGS_max_sd_pixels) {
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PrintError("--max_hd_pixels must be greater than --max_sd_pixels.");
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success = false;
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}
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if (FLAGS_max_uhd1_pixels <= FLAGS_max_hd_pixels) {
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PrintError("--max_uhd1_pixels must be greater than --max_hd_pixels.");
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success = false;
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}
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const bool aes = !FLAGS_signer.empty() && FLAGS_rsa_signing_key_path.empty();
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const char aes_label[] =
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"--signer is specified and exclusive with --rsa_signing_key_path";
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// aes_signer_key and aes_signing_iv are associated with aes signing.
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if (!ValidateFlag(
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"aes_signing_key", FLAGS_aes_signing_key, aes, true, aes_label)) {
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success = false;
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}
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if (!ValidateFlag(
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"aes_signing_iv", FLAGS_aes_signing_iv, aes, true, aes_label)) {
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success = false;
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}
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const bool rsa = !FLAGS_signer.empty() && FLAGS_aes_signing_key.empty() &&
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FLAGS_aes_signing_iv.empty();
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const char rsa_label[] =
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"--signer is specified and exclusive with --aes_signing_key/iv";
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// rsa_signing_key_path is associated with rsa_signing.
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if (!ValidateFlag("rsa_signing_key_path",
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FLAGS_rsa_signing_key_path,
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rsa,
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true,
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rsa_label)) {
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success = false;
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}
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if (!FLAGS_signer.empty() &&
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(FLAGS_aes_signing_key.empty() || FLAGS_aes_signing_iv.empty()) &&
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FLAGS_rsa_signing_key_path.empty()) {
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PrintError(
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"--aes_signing_key/iv or --rsa_signing_key_path is required with "
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"--signer.");
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success = false;
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}
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if (FLAGS_crypto_period_duration < 0) {
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PrintError("--crypto_period_duration should not be negative.");
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success = false;
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}
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return success;
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}
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} // namespace shaka
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