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Minimal implementation of Widevine MediaCAS ECMG.

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=226515998
This commit is contained in:
Widevine Buildbot
2018-12-21 22:32:02 +00:00
parent 371d1205d9
commit b60df7a03c
5 changed files with 207 additions and 5 deletions
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example/test_ecmg_messages.h Normal file
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////////////////////////////////////////////////////////////////////////////////
// Copyright 2018 Google LLC.
//
// This software is licensed under the terms defined in the Widevine Master
// License Agreement. For a copy of this agreement, please contact
// widevine-licensing@google.com.
////////////////////////////////////////////////////////////////////////////////
// Example ECMG messages used in unit tests and example client.
#ifndef MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_ECMG_MESSAGES_H_
#define MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_ECMG_MESSAGES_H_
namespace widevine {
namespace cas {
const char kTestChannelSetup[] = {
'\x03', // protocol_version
'\x00', '\x01', // message_type - Channel_setup
'\x00', '\x0e', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x01', // parameter_type- SUPER_CAS_ID
'\x00', '\x04', // parameter_length
'\x4a', '\xd4', '\x00', '\x00' // parameter_value
};
const char kTestChannelStatus[] = {
'\x03', // protocol_version
'\x00', '\x03', // message_type - Channel_status
'\x00', '\x39', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x02', // parameter_type - setion_TSpkt_flag
'\x00', '\x01', // parameter_length
'\x01', // parameter_value
'\x00', '\x03', // parameter_type - delay_start
'\x00', '\x02', // parameter_length
'\x00', '\xc8', // parameter_value
'\x00', '\x04', // parameter_type - delay_stop
'\x00', '\x02', // parameter_length
'\x00', '\xc8', // parameter_value
'\x00', '\x07', // parameter_type - ECM_rep_period
'\x00', '\x02', // parameter_length
'\x00', '\x64', // parameter_value
'\x00', '\x08', // parameter_type - max_streams
'\x00', '\x02', // parameter_length
'\x00', '\x00', // parameter_value
'\x00', '\x09', // parameter_type - min_CP_duration
'\x00', '\x02', // parameter_length
'\x00', '\x64', // parameter_value
'\x00', '\x0a', // parameter_type - lead_CW
'\x00', '\x01', // parameter_value
'\x01', // parameter_value
'\x00', '\x0b', // parameter_type - CW_per_msg
'\x00', '\x01', // parameter_length
'\x02', // parameter_value
'\x00', '\x0c', // parameter_type - max_comp_time
'\x00', '\x02', // parameter_length
'\x00', '\x64' // parameter_value
};
const char kTestStreamSetup[] = {
'\x03', // protocol_version
'\x01', '\x01', // message_type - Stream_setup
'\x00', '\x18', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x19', // parameter_type - ECM_id
'\x00', '\x02', // parameter_length
'\x00', '\x02', // parameter_value
'\x00', '\x10', // parameter_type - nominal_CP_duration
'\x00', '\x02', // parameter_length
'\x00', '\x64' // parameter_value
};
const char kTestStreamStatus[] = {
'\x03', // protocol_version
'\x01', '\x03', // message_type - Stream_status
'\x00', '\x17', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x19', // parameter_type - ECM_id
'\x00', '\x02', // parameter_length
'\x00', '\x02', // parameter_value
'\x00', '\x11', // parameter_type - access_criteria_transfer_mode
'\x00', '\x01', // parameter_length
'\x01' // parameter_value
};
const char kTestCwProvision[] = {
'\x03', // protocol_version
'\x02', '\x01', // message_type - CW_provision
'\x00', '\x44', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x12', // parameter_type - CP_number
'\x00', '\x02', // parameter_length
'\x00', '\x00', // parameter_value
'\x00', '\x13', // parameter_type - CP_duration
'\x00', '\x02', // parameter_length
'\x00', '\x64', // parameter_value
'\x00', '\x14', // parameter_type - CP_CW_Combination
'\x00', '\x12', // parameter_length
'\x00', '\x00', // parameter_value - CP (2 bytes) then CW next (16 bytes)
'\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
'\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
'\x00', '\x14', // parameter_type - CP_CW_Combination
'\x00', '\x12', // parameter_length
'\x00', '\x01', // parameter_value - CP (2 bytes) then CW next (16 bytes)
'\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
'\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f'};
// CW is encrypted using hardcoded fixed entitlement key.
const char kTestEcmResponse[] = {
'\x03', // protocol_version
'\x02', '\x02', // message_type - ECM_response
'\x00', '\xd2', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x12', // parameter_type - CP_number
'\x00', '\x02', // parameter_length
'\x00', '\x00', // parameter_value
'\x00', '\x15', // parameter_type - ECM_datagram
'\x00', '\xbc', // parameter_length
// parameter_value - ECM_datagram
'\x47', '\x40', '\x02', '\x10', '\x00', '\x80', '\x70', '\x95', '\x4a',
'\xd4', '\x01', '\x05', '\x80', '\x66', '\x61', '\x6b', '\x65', '\x5f',
'\x6b', '\x65', '\x79', '\x5f', '\x69', '\x64', '\x31', '\x2e', '\x2e',
'\x2e', '\x2e', '\xef', '\x40', '\x57', '\x48', '\xa7', '\xad', '\xdd',
'\x34', '\x73', '\xfe', '\x5d', '\x1c', '\x65', '\xa0', '\xbf', '\x93',
'\xfe', '\x01', '\x4b', '\x1d', '\xcd', '\x9e', '\x1d', '\x3a', '\x36',
'\x99', '\x8f', '\x47', '\xa1', '\x3b', '\x46', '\xf1', '\xde', '\x9e',
'\xc2', '\x88', '\xf8', '\x27', '\x2f', '\xea', '\xa1', '\x63', '\x9b',
'\x1b', '\x6a', '\x56', '\x2d', '\x26', '\x31', '\x32', '\x33', '\x34',
'\x35', '\x36', '\x37', '\x38', '\x66', '\x61', '\x6b', '\x65', '\x5f',
'\x6b', '\x65', '\x79', '\x5f', '\x69', '\x64', '\x32', '\x2e', '\x2e',
'\x2e', '\x2e', '\xf4', '\x71', '\x2a', '\x4b', '\x6d', '\x6d', '\x14',
'\x4d', '\x2e', '\x53', '\xe7', '\x4b', '\x9f', '\x4b', '\x0a', '\x34',
'\xb4', '\xfd', '\xbe', '\x86', '\x21', '\x35', '\x1e', '\xda', '\x81',
'\x89', '\x6f', '\x70', '\xd3', '\xd2', '\xb2', '\x79', '\xf2', '\xcd',
'\xeb', '\xc5', '\xaf', '\x89', '\xab', '\xeb', '\xf0', '\x1b', '\xd0',
'\xd3', '\xe9', '\x7d', '\x81', '\x8a', '\x31', '\x32', '\x33', '\x34',
'\x35', '\x36', '\x37', '\x38', '\xff', '\xff', '\xff', '\xff', '\xff',
'\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff',
'\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff',
'\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff'};
const char kTestStreamCloseRequest[] = {
'\x03', // protocol_version
'\x01', '\x04', // message_type - Stream_close_request
'\x00', '\x0c', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01' // parameter_value
};
const char kTestStreamCloseResponse[] = {
'\x03', // protocol_version
'\x01', '\x05', // message_type - Stream_close_response
'\x00', '\x0c', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01', // parameter_value
'\x00', '\x0f', // parameter_type - ECM_stream_id
'\x00', '\x02', // parameter_length
'\x00', '\x01' // parameter_value
};
const char kTestChannelClose[] = {
'\x03', // protocol_version
'\x00', '\x04', // message_type - Channel_close
'\x00', '\x06', // message_length
'\x00', '\x0e', // parameter_type - ECM_channel_id
'\x00', '\x02', // parameter_length
'\x00', '\x01' // parameter_value
};
} // namespace cas
} // namespace widevine
#endif // MEDIA_CAS_PACKAGER_SDK_EXAMPLE_TEST_ECMG_MESSAGES_H_

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media_cas_packager_sdk/public/wv_cas_key_fetcher.h
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#include <string> #include <string>
#include "gflags/gflags.h" #include "gflags/gflags.h"
#include "common/status.h"
#include "media_cas_packager_sdk/internal/key_fetcher.h" #include "media_cas_packager_sdk/internal/key_fetcher.h"
DECLARE_string(license_server); DECLARE_string(license_server);
@@ -41,15 +40,15 @@ class WvCasKeyFetcher : public KeyFetcher {
// |signed_response_string| a serialized SignedCasEncryptionResponse // |signed_response_string| a serialized SignedCasEncryptionResponse
// message. It should be passed into // message. It should be passed into
// widevine::cas::Ecm::ProcessCasEncryptionResponse(). // widevine::cas::Ecm::ProcessCasEncryptionResponse().
virtual util::Status RequestEntitlementKey(const std::string& request_string, Status RequestEntitlementKey(const std::string& request_string,
std::string* signed_response_string); std::string* signed_response_string) override;
protected: protected:
// Makes a HTTP request to License Server for entitlement key(s). // Makes a HTTP request to License Server for entitlement key(s).
// Returns the HTTP response in Json format in |http_response_json|. // Returns the HTTP response in Json format in |http_response_json|.
// Protected visibility to support unit testing. // Protected visibility to support unit testing.
virtual util::Status MakeHttpRequest(const std::string& signed_request_json, virtual Status MakeHttpRequest(const std::string& signed_request_json,
std::string* http_response_json) const; std::string* http_response_json) const;
}; };
} // namespace cas } // namespace cas

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