674 lines
26 KiB
C++
674 lines
26 KiB
C++
// Copyright 2014 Google LLC. 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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#include <packager/media/base/widevine_key_source.h>
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#include <algorithm>
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#include <cinttypes>
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#include <iterator>
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#include <absl/strings/escaping.h>
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#include <absl/strings/str_format.h>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <packager/media/base/key_fetcher.h>
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#include <packager/media/base/protection_system_ids.h>
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#include <packager/media/base/request_signer.h>
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#include <packager/media/base/widevine_pssh_generator.h>
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#include <packager/status/status_test_util.h>
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using ::testing::_;
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using ::testing::Bool;
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using ::testing::Combine;
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using ::testing::DoAll;
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using ::testing::InSequence;
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using ::testing::Return;
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using ::testing::SetArgPointee;
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using ::testing::StrEq;
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using ::testing::Test;
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using ::testing::Values;
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using ::testing::WithParamInterface;
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namespace shaka {
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namespace media {
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namespace {
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const bool kClassic = true;
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const bool kHasIv = true;
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const char kServerUrl[] = "http://www.foo.com/getcontentkey";
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const char kContentId[] = "ContentFoo";
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const char kPolicy[] = "PolicyFoo";
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const char kSignerName[] = "SignerFoo";
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const char kMockSignature[] = "MockSignature";
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// The license service may return an error indicating a transient error has
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// just happened in the server, or other types of errors.
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// WidevineKeySource will perform a number of retries on transient
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// errors;
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// WidevineKeySource does not know about other errors and retries are
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// not performed.
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const char kLicenseStatusTransientError[] = "INTERNAL_ERROR";
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const char kLicenseStatusUnknownError[] = "UNKNOWN_ERROR";
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const char kExpectedRequestMessageFormat[] =
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R"({"content_id":"%s","policy":"%s",)"
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R"("tracks":[{"type":"SD"},{"type":"HD"},{"type":"UHD1"},)"
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R"({"type":"UHD2"},{"type":"AUDIO"}],)"
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R"("drm_types":["WIDEVINE"],"protection_scheme":"%s"})";
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const char kExpectedRequestMessageFormatWithEntitlement[] =
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R"({"content_id":"%s","policy":"%s",)"
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R"("tracks":[{"type":"SD"},{"type":"HD"},{"type":"UHD1"},)"
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R"({"type":"UHD2"},{"type":"AUDIO"}],)"
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R"("drm_types":["WIDEVINE"],"protection_scheme":"%s",)"
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R"("enable_entitlement_license":true})";
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const char kExpectedRequestMessageWithAssetIdFormat[] =
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R"({"tracks":[{"type":"SD"},{"type":"HD"},{"type":"UHD1"},)"
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R"({"type":"UHD2"},{"type":"AUDIO"}],)"
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R"("drm_types":["WIDEVINE"],"asset_id":%u})";
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const char kExpectedRequestMessageWithPsshFormat[] =
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R"({"tracks":[{"type":"SD"},{"type":"HD"},{"type":"UHD1"},)"
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R"({"type":"UHD2"},{"type":"AUDIO"}],)"
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R"("drm_types":["WIDEVINE"],"pssh_data":"%s"})";
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const char kExpectedSignedMessageFormat[] =
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R"({"request":"%s","signature":"%s","signer":"%s"})";
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const char kTrackFormat[] = R"({"type":"%s","key_id":"%s","key":"%s",)"
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R"("pssh":[{"drm_type":"WIDEVINE","data":"%s"}]})";
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const char kTrackFormatWithIv[] =
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R"({"type":"%s","key_id":"%s","key":"%s","iv":"%s",)"
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R"("pssh":[{"drm_type":"WIDEVINE","data":"%s"}]})";
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const char kTrackFormatWithBoxes[] =
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R"({"type":"%s","key_id":"%s","key":"%s",)"
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R"("pssh":[{"drm_type":"WIDEVINE","data":"%s","boxes":"%s"}]})";
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const char kClassicTrackFormat[] = R"({"type":"%s","key":"%s"})";
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const char kLicenseResponseFormat[] = R"({"status":"%s","tracks":[%s]})";
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const char kHttpResponseFormat[] = R"({"response":"%s"})";
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const uint8_t kRequestPsshBox[] = {
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0, 0, 0, 44, 'p', 's', 's', 'h', 0, 0, 0,
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0, 0xed, 0xef, 0x8b, 0xa9, 0x79, 0xd6, 0x4a, 0xce, 0xa3, 0xc8,
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0x27, 0xdc, 0xd5, 0x1d, 0x21, 0xed, 0, 0, 0, 12, 0x22,
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0x0a, 'C', 'o', 'n', 't', 'e', 'n', 't', 'F', 'o', 'o'};
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const char kRequestPsshData[] = {0x22, 0x0a, 'C', 'o', 'n', 't', 'e',
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'n', 't', 'F', 'o', 'o', '\0'};
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const uint8_t kRequestPsshDataFromKeyIds[] = {0x12, 0x06, 0x00, 0x01,
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0x02, 0x03, 0x04, 0x05};
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const uint8_t kRequestKeyId[] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05};
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// 32-bit with leading bit set, to verify that big uint32_t can be handled
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// correctly.
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const uint32_t kClassicAssetId = 0x80038cd9;
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const uint8_t kClassicAssetIdBytes[] = {0x80, 0x03, 0x8c, 0xd9};
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std::string Base64Encode(const std::string& input) {
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std::string output;
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absl::Base64Escape(input, &output);
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return output;
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}
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std::string ToString(const std::vector<uint8_t> v) {
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return std::string(v.begin(), v.end());
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}
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std::string GetMockKeyId(const std::string& track_type) {
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// Key ID must be 16 characters.
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std::string key_id = "MockKeyId" + track_type;
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key_id.resize(16, '~');
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return key_id;
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}
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std::string GetMockKey(const std::string& track_type) {
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// The key must be 16 characters, in case the key is needed to generate a
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// PlayReady pssh.
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std::string key = "MockKey" + track_type;
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key.resize(16, '~');
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return key;
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}
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std::string GetMockIv(const std::string& track_type) {
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// IV must be 16 characters.
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std::string iv = "MockIv" + track_type;
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iv.resize(16, '~');
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return iv;
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}
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std::string GetMockPsshData() {
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return kRequestPsshData;
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}
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std::string GenerateMockLicenseResponseWithBoxes(const std::string& boxes) {
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const std::string kTrackTypes[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
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std::string tracks;
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for (const std::string& track_type : kTrackTypes) {
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if (!tracks.empty())
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tracks += ",";
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tracks +=
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absl::StrFormat(kTrackFormatWithBoxes, track_type.c_str(),
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Base64Encode(GetMockKeyId(track_type)).c_str(),
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Base64Encode(GetMockKey(track_type)).c_str(),
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Base64Encode(GetMockPsshData()).c_str(), boxes.c_str());
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}
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return absl::StrFormat(kLicenseResponseFormat, "OK", tracks.c_str());
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}
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std::string GenerateMockLicenseResponse() {
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const std::string kTrackTypes[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
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std::string tracks;
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for (const std::string& track_type : kTrackTypes) {
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if (!tracks.empty())
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tracks += ",";
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tracks += absl::StrFormat(kTrackFormat, track_type.c_str(),
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Base64Encode(GetMockKeyId(track_type)).c_str(),
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Base64Encode(GetMockKey(track_type)).c_str(),
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Base64Encode(GetMockPsshData()).c_str());
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}
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return absl::StrFormat(kLicenseResponseFormat, "OK", tracks.c_str());
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}
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std::string GenerateMockLicenseResponseWithIv() {
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const std::string kTrackTypes[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
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std::string tracks;
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for (const std::string& track_type : kTrackTypes) {
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if (!tracks.empty())
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tracks += ",";
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tracks += absl::StrFormat(kTrackFormatWithIv, track_type.c_str(),
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Base64Encode(GetMockKeyId(track_type)).c_str(),
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Base64Encode(GetMockKey(track_type)).c_str(),
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Base64Encode(GetMockIv(track_type)).c_str(),
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Base64Encode(GetMockPsshData()).c_str());
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}
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return absl::StrFormat(kLicenseResponseFormat, "OK", tracks.c_str());
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}
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std::string GenerateMockClassicLicenseResponse() {
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const std::string kTrackTypes[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
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std::string tracks;
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for (const std::string& track_type : kTrackTypes) {
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if (!tracks.empty())
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tracks += ",";
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tracks += absl::StrFormat(kClassicTrackFormat, track_type.c_str(),
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Base64Encode(GetMockKey(track_type)).c_str());
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}
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return absl::StrFormat(kLicenseResponseFormat, "OK", tracks.c_str());
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}
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} // namespace
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class MockRequestSigner : public RequestSigner {
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public:
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explicit MockRequestSigner(const std::string& signer_name)
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: RequestSigner(signer_name) {}
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~MockRequestSigner() override {}
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MOCK_METHOD2(GenerateSignature,
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bool(const std::string& message, std::string* signature));
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private:
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DISALLOW_COPY_AND_ASSIGN(MockRequestSigner);
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};
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class MockKeyFetcher : public KeyFetcher {
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public:
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MockKeyFetcher() : KeyFetcher() {}
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~MockKeyFetcher() override {}
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MOCK_METHOD3(FetchKeys,
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Status(const std::string& service_address,
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const std::string& data,
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std::string* response));
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private:
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DISALLOW_COPY_AND_ASSIGN(MockKeyFetcher);
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};
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class WidevineKeySourceTest : public Test {
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public:
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WidevineKeySourceTest()
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: mock_request_signer_(new MockRequestSigner(kSignerName)),
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mock_key_fetcher_(new MockKeyFetcher()) {}
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void SetUp() override {
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content_id_.assign(
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reinterpret_cast<const uint8_t*>(kContentId),
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reinterpret_cast<const uint8_t*>(kContentId) + strlen(kContentId));
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}
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protected:
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std::string GetExpectedProtectionScheme() {
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switch (protection_scheme_) {
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case FOURCC_cenc:
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return "CENC";
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case FOURCC_cbcs:
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case kAppleSampleAesProtectionScheme:
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// Apple SAMPLE-AES is considered as a variation of cbcs.
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return "CBCS";
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case FOURCC_cbc1:
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return "CBC1";
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case FOURCC_cens:
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return "CENS";
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default:
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return "UNKNOWN";
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}
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}
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void CreateWidevineKeySource() {
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ProtectionSystem protection_system = ProtectionSystem::kNone;
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if (add_widevine_pssh_)
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protection_system |= ProtectionSystem::kWidevine;
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if (add_common_pssh_)
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protection_system |= ProtectionSystem::kCommon;
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widevine_key_source_.reset(new WidevineKeySource(
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kServerUrl, protection_system, protection_scheme_));
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widevine_key_source_->set_key_fetcher(std::move(mock_key_fetcher_));
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}
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void VerifyKeys(bool classic, bool has_iv) {
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EncryptionKey encryption_key;
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const std::string kStreamLabels[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
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for (const std::string& stream_label : kStreamLabels) {
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ASSERT_OK(widevine_key_source_->GetKey(stream_label, &encryption_key));
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EXPECT_EQ(GetMockKey(stream_label), ToString(encryption_key.key));
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if (!classic) {
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size_t num_key_system_info =
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add_widevine_pssh_ || !add_common_pssh_ ? 1 : 0;
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ASSERT_EQ(num_key_system_info, encryption_key.key_system_info.size());
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EXPECT_EQ(GetMockKeyId(stream_label), ToString(encryption_key.key_id));
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if (has_iv)
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EXPECT_EQ(GetMockIv(stream_label), ToString(encryption_key.iv));
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else
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EXPECT_TRUE(encryption_key.iv.empty());
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auto key_system_info_iter = encryption_key.key_system_info.begin();
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// Default to Widevine if neither are set.
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if (add_widevine_pssh_ || !add_common_pssh_) {
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const std::vector<uint8_t> widevine_system_id(
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std::begin(kWidevineSystemId), std::end(kWidevineSystemId));
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ASSERT_EQ(widevine_system_id, key_system_info_iter->system_id);
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const std::vector<uint8_t>& pssh = key_system_info_iter->psshs;
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std::unique_ptr<PsshBoxBuilder> pssh_builder =
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PsshBoxBuilder::ParseFromBox(pssh.data(), pssh.size());
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ASSERT_TRUE(pssh_builder);
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EXPECT_EQ(GetMockPsshData(), ToString(pssh_builder->pssh_data()));
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++key_system_info_iter;
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}
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}
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}
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}
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std::unique_ptr<MockRequestSigner> mock_request_signer_;
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std::unique_ptr<MockKeyFetcher> mock_key_fetcher_;
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std::unique_ptr<WidevineKeySource> widevine_key_source_;
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std::vector<uint8_t> content_id_;
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bool add_widevine_pssh_ = false;
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bool add_common_pssh_ = false;
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FourCC protection_scheme_ = FOURCC_cenc;
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private:
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DISALLOW_COPY_AND_ASSIGN(WidevineKeySourceTest);
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};
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TEST_F(WidevineKeySourceTest, GenerateSignatureFailure) {
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EXPECT_CALL(*mock_request_signer_, GenerateSignature(_, _))
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.WillOnce(Return(false));
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CreateWidevineKeySource();
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widevine_key_source_->set_signer(std::move(mock_request_signer_));
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ASSERT_EQ(Status(error::INTERNAL_ERROR, "Signature generation failed."),
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widevine_key_source_->FetchKeys(content_id_, kPolicy));
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}
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TEST_F(WidevineKeySourceTest, RetryOnHttpTimeout) {
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std::string mock_response = absl::StrFormat(
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kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponse()).c_str());
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// Retry is expected on HTTP timeout.
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EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
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.WillOnce(Return(Status(error::TIME_OUT, "")))
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.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
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CreateWidevineKeySource();
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ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
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VerifyKeys(!kClassic, !kHasIv);
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}
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TEST_F(WidevineKeySourceTest, RetryOnTransientError) {
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std::string mock_license_status =
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absl::StrFormat(kLicenseResponseFormat, kLicenseStatusTransientError, "");
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std::string mock_response = absl::StrFormat(
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kHttpResponseFormat, Base64Encode(mock_license_status).c_str());
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std::string expected_retried_response = absl::StrFormat(
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kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponse()).c_str());
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// Retry is expected on transient error.
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EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
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.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)))
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.WillOnce(DoAll(SetArgPointee<2>(expected_retried_response),
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Return(Status::OK)));
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CreateWidevineKeySource();
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ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
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VerifyKeys(!kClassic, !kHasIv);
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}
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TEST_F(WidevineKeySourceTest, NoRetryOnUnknownError) {
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std::string mock_license_status =
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absl::StrFormat(kLicenseResponseFormat, kLicenseStatusUnknownError, "");
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std::string mock_response = absl::StrFormat(
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kHttpResponseFormat, Base64Encode(mock_license_status).c_str());
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EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
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.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
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CreateWidevineKeySource();
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ASSERT_EQ(error::SERVER_ERROR,
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widevine_key_source_->FetchKeys(content_id_, kPolicy).error_code());
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}
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TEST_F(WidevineKeySourceTest, CheckIv) {
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std::string mock_response = absl::StrFormat(
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kHttpResponseFormat,
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Base64Encode(GenerateMockLicenseResponseWithIv()).c_str());
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EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
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.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
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CreateWidevineKeySource();
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ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
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VerifyKeys(!kClassic, kHasIv);
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}
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TEST_F(WidevineKeySourceTest, BoxesInResponse) {
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const char kMockBoxes[] = "mock_pssh_boxes";
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std::string mock_response = absl::StrFormat(
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kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponseWithBoxes(
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Base64Encode(kMockBoxes)))
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.c_str());
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EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
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.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
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CreateWidevineKeySource();
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ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
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const char kHdStreamLabel[] = "HD";
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EncryptionKey encryption_key;
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ASSERT_OK(widevine_key_source_->GetKey(kHdStreamLabel, &encryption_key));
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ASSERT_EQ(1u, encryption_key.key_system_info.size());
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ASSERT_EQ(kMockBoxes, ToString(encryption_key.key_system_info.front().psshs));
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}
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class WidevineKeySourceParameterizedTest
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: public WidevineKeySourceTest,
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public WithParamInterface<std::tuple<bool, bool, FourCC>> {
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public:
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WidevineKeySourceParameterizedTest() {
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add_widevine_pssh_ = std::get<0>(GetParam());
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add_common_pssh_ = std::get<1>(GetParam());
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protection_scheme_ = std::get<2>(GetParam());
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}
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};
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// Check whether expected request message and post data was generated and
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// verify the correct behavior on http failure.
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TEST_P(WidevineKeySourceParameterizedTest, HttpFetchFailure) {
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std::string expected_message = absl::StrFormat(
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kExpectedRequestMessageFormat, Base64Encode(kContentId).c_str(), kPolicy,
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GetExpectedProtectionScheme().c_str());
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EXPECT_CALL(*mock_request_signer_,
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GenerateSignature(StrEq(expected_message), _))
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.WillOnce(DoAll(SetArgPointee<1>(kMockSignature), Return(true)));
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std::string expected_post_data = absl::StrFormat(
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kExpectedSignedMessageFormat, Base64Encode(expected_message).c_str(),
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Base64Encode(kMockSignature).c_str(), kSignerName);
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const Status kMockStatus = Status::UNKNOWN;
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EXPECT_CALL(*mock_key_fetcher_,
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FetchKeys(StrEq(kServerUrl), expected_post_data, _))
|
|
.WillOnce(Return(kMockStatus));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
ASSERT_EQ(kMockStatus,
|
|
widevine_key_source_->FetchKeys(content_id_, kPolicy));
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, LicenseStatusCencOK) {
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponse()).c_str());
|
|
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
|
|
CreateWidevineKeySource();
|
|
ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
|
|
VerifyKeys(!kClassic, !kHasIv);
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, LicenseStatusCencMalformedResponse) {
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat, Base64Encode("malformed response").c_str());
|
|
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
|
|
CreateWidevineKeySource();
|
|
ASSERT_EQ(error::SERVER_ERROR,
|
|
widevine_key_source_->FetchKeys(content_id_, kPolicy)
|
|
.error_code());
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, LicenseStatusCencWithPsshBoxOK) {
|
|
std::string expected_message =
|
|
absl::StrFormat(kExpectedRequestMessageWithPsshFormat,
|
|
Base64Encode(kRequestPsshData).c_str());
|
|
EXPECT_CALL(*mock_request_signer_,
|
|
GenerateSignature(StrEq(expected_message), _))
|
|
.WillOnce(DoAll(SetArgPointee<1>(kMockSignature), Return(true)));
|
|
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponse()).c_str());
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
std::vector<uint8_t> pssh_box(std::begin(kRequestPsshBox),
|
|
std::end(kRequestPsshBox));
|
|
ASSERT_OK(widevine_key_source_->FetchKeys(EmeInitDataType::CENC, pssh_box));
|
|
VerifyKeys(!kClassic, !kHasIv);
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, LicenseStatusCencWithKeyIdsOK) {
|
|
std::string expected_pssh_data(std::begin(kRequestPsshDataFromKeyIds),
|
|
std::end(kRequestPsshDataFromKeyIds));
|
|
std::string expected_message =
|
|
absl::StrFormat(kExpectedRequestMessageWithPsshFormat,
|
|
Base64Encode(expected_pssh_data).c_str());
|
|
EXPECT_CALL(*mock_request_signer_,
|
|
GenerateSignature(StrEq(expected_message), _))
|
|
.WillOnce(DoAll(SetArgPointee<1>(kMockSignature), Return(true)));
|
|
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat, Base64Encode(GenerateMockLicenseResponse()).c_str());
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
std::vector<uint8_t> key_id(std::begin(kRequestKeyId),
|
|
std::end(kRequestKeyId));
|
|
ASSERT_OK(widevine_key_source_->FetchKeys(EmeInitDataType::WEBM, key_id));
|
|
VerifyKeys(!kClassic, !kHasIv);
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, LicenseStatusClassicOK) {
|
|
std::string expected_message = absl::StrFormat(
|
|
kExpectedRequestMessageWithAssetIdFormat, kClassicAssetId);
|
|
EXPECT_CALL(*mock_request_signer_,
|
|
GenerateSignature(StrEq(expected_message), _))
|
|
.WillOnce(DoAll(SetArgPointee<1>(kMockSignature), Return(true)));
|
|
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat,
|
|
Base64Encode(GenerateMockClassicLicenseResponse()).c_str());
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
ASSERT_OK(widevine_key_source_->FetchKeys(
|
|
EmeInitDataType::WIDEVINE_CLASSIC,
|
|
std::vector<uint8_t>(std::begin(kClassicAssetIdBytes),
|
|
std::end(kClassicAssetIdBytes))));
|
|
VerifyKeys(kClassic, !kHasIv);
|
|
}
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, VerifyEntitlementLicenseRequest) {
|
|
const std::string expected_message =
|
|
absl::StrFormat(kExpectedRequestMessageFormatWithEntitlement,
|
|
Base64Encode(kContentId).c_str(), kPolicy,
|
|
GetExpectedProtectionScheme().c_str());
|
|
EXPECT_CALL(*mock_request_signer_,
|
|
GenerateSignature(StrEq(expected_message), _))
|
|
.WillOnce(Return(false));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_enable_entitlement_license(true);
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
ASSERT_NOT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
|
|
}
|
|
|
|
namespace {
|
|
|
|
const char kCryptoPeriodRequestMessageFormat[] =
|
|
R"({"content_id":"%s","policy":"%s",)"
|
|
R"("tracks":[{"type":"SD"},{"type":"HD"},{"type":"UHD1"},)"
|
|
R"({"type":"UHD2"},{"type":"AUDIO"}],)"
|
|
R"("drm_types":["WIDEVINE"],)"
|
|
R"("first_crypto_period_index":%u,"crypto_period_count":%u,)"
|
|
R"("crypto_period_seconds":%u,)"
|
|
R"("protection_scheme":"%s"})";
|
|
|
|
const char kCryptoPeriodTrackFormat[] =
|
|
R"({"type":"%s","key_id":"%s","key":"%s",)"
|
|
R"("pssh":[{"drm_type":"WIDEVINE","data":""}], )"
|
|
R"("crypto_period_index":%u})";
|
|
|
|
std::string GetMockKey(const std::string& track_type, uint32_t index) {
|
|
// The key must be 16 characters, in case the key is needed to generate a
|
|
// PlayReady pssh.
|
|
std::string key =
|
|
"MockKey" + track_type + "@" + absl::StrFormat("%" PRIu32, index);
|
|
key.resize(16, '~');
|
|
return key;
|
|
}
|
|
|
|
std::string GenerateMockKeyRotationLicenseResponse(
|
|
uint32_t initial_crypto_period_index,
|
|
uint32_t crypto_period_count) {
|
|
const std::string kTrackTypes[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
|
|
std::string tracks;
|
|
for (uint32_t index = initial_crypto_period_index;
|
|
index < initial_crypto_period_index + crypto_period_count;
|
|
++index) {
|
|
for (const std::string& track_type : kTrackTypes) {
|
|
if (!tracks.empty())
|
|
tracks += ",";
|
|
tracks += absl::StrFormat(
|
|
kCryptoPeriodTrackFormat, track_type.c_str(),
|
|
Base64Encode(GetMockKeyId(track_type)).c_str(),
|
|
Base64Encode(GetMockKey(track_type, index)).c_str(), index);
|
|
}
|
|
}
|
|
return absl::StrFormat(kLicenseResponseFormat, "OK", tracks.c_str());
|
|
}
|
|
|
|
} // namespace
|
|
|
|
TEST_P(WidevineKeySourceParameterizedTest, KeyRotationTest) {
|
|
const uint32_t kFirstCryptoPeriodIndex = 8;
|
|
const uint32_t kCryptoPeriodCount = 10;
|
|
const uint32_t kCryptoPeriodSeconds = 100;
|
|
// Array of indexes to be checked.
|
|
const uint32_t kCryptoPeriodIndexes[] = {
|
|
kFirstCryptoPeriodIndex, 17, 37, 38, 36, 89};
|
|
// Derived from kCryptoPeriodIndexes: ceiling((89 - 8 ) / 10).
|
|
const uint32_t kCryptoIterations = 9;
|
|
|
|
// Generate expectations in sequence.
|
|
InSequence dummy;
|
|
|
|
// Expecting a non-key rotation enabled request on FetchKeys().
|
|
{
|
|
EXPECT_CALL(*mock_request_signer_, GenerateSignature(_, _))
|
|
.WillOnce(Return(true));
|
|
std::string mock_response =
|
|
absl::StrFormat(kHttpResponseFormat,
|
|
Base64Encode(GenerateMockLicenseResponse()).c_str());
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
}
|
|
|
|
for (uint32_t i = 0; i < kCryptoIterations; ++i) {
|
|
uint32_t first_crypto_period_index =
|
|
kFirstCryptoPeriodIndex - 1 + i * kCryptoPeriodCount;
|
|
std::string expected_message = absl::StrFormat(
|
|
kCryptoPeriodRequestMessageFormat, Base64Encode(kContentId).c_str(),
|
|
kPolicy, first_crypto_period_index, kCryptoPeriodCount,
|
|
kCryptoPeriodSeconds, GetExpectedProtectionScheme().c_str());
|
|
EXPECT_CALL(*mock_request_signer_, GenerateSignature(expected_message, _))
|
|
.WillOnce(DoAll(SetArgPointee<1>(kMockSignature), Return(true)));
|
|
|
|
std::string mock_response = absl::StrFormat(
|
|
kHttpResponseFormat,
|
|
Base64Encode(GenerateMockKeyRotationLicenseResponse(
|
|
first_crypto_period_index, kCryptoPeriodCount))
|
|
.c_str());
|
|
EXPECT_CALL(*mock_key_fetcher_, FetchKeys(_, _, _))
|
|
.WillOnce(DoAll(SetArgPointee<2>(mock_response), Return(Status::OK)));
|
|
}
|
|
// Fail future requests.
|
|
EXPECT_CALL(*mock_request_signer_, GenerateSignature(_, _))
|
|
.WillRepeatedly(Return(false));
|
|
|
|
CreateWidevineKeySource();
|
|
widevine_key_source_->set_signer(std::move(mock_request_signer_));
|
|
ASSERT_OK(widevine_key_source_->FetchKeys(content_id_, kPolicy));
|
|
|
|
EncryptionKey encryption_key;
|
|
const std::string kStreamLabels[] = {"SD", "HD", "UHD1", "UHD2", "AUDIO"};
|
|
for (size_t i = 0; i < std::size(kCryptoPeriodIndexes); ++i) {
|
|
for (const std::string& stream_label : kStreamLabels) {
|
|
ASSERT_OK(widevine_key_source_->GetCryptoPeriodKey(
|
|
kCryptoPeriodIndexes[i], kCryptoPeriodSeconds, stream_label,
|
|
&encryption_key));
|
|
EXPECT_EQ(GetMockKey(stream_label, kCryptoPeriodIndexes[i]),
|
|
ToString(encryption_key.key));
|
|
}
|
|
}
|
|
|
|
// The old crypto period indexes should have been garbage collected.
|
|
Status status = widevine_key_source_->GetCryptoPeriodKey(
|
|
kFirstCryptoPeriodIndex, kCryptoPeriodSeconds, kStreamLabels[0],
|
|
&encryption_key);
|
|
EXPECT_EQ(error::INVALID_ARGUMENT, status.error_code());
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(WidevineKeySourceInstance,
|
|
WidevineKeySourceParameterizedTest,
|
|
Combine(Bool(),
|
|
Bool(),
|
|
Values(FOURCC_cenc,
|
|
FOURCC_cbcs,
|
|
FOURCC_cens,
|
|
FOURCC_cbc1,
|
|
kAppleSampleAesProtectionScheme)));
|
|
|
|
} // namespace media
|
|
} // namespace shaka
|