зеркало из https://github.com/mozilla/gecko-dev.git
131 строка
3.1 KiB
C++
131 строка
3.1 KiB
C++
/*
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* Copyright 2015, Mozilla Foundation and contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <vector>
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#include "ClearKeyCDM.h"
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#include "ClearKeySessionManager.h"
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// This include is required in order for content_decryption_module to work
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// on Unix systems.
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#include "stddef.h"
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#include "content_decryption_module.h"
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#include "content_decryption_module_ext.h"
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#ifndef XP_WIN
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#endif
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#ifdef ENABLE_WMF
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#include "WMFUtils.h"
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#endif // ENABLE_WMF
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extern "C" {
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CDM_API
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void INITIALIZE_CDM_MODULE() {
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}
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static bool sCanReadHostVerificationFiles = false;
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CDM_API
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void* CreateCdmInstance(int cdm_interface_version,
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const char* key_system,
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uint32_t key_system_size,
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GetCdmHostFunc get_cdm_host_func,
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void* user_data)
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{
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CK_LOGE("ClearKey CreateCDMInstance");
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#ifdef ENABLE_WMF
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if (!wmf::EnsureLibs()) {
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CK_LOGE("Required libraries were not found");
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return nullptr;
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}
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#endif
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// Test that we're able to read the host files.
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if (!sCanReadHostVerificationFiles) {
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return nullptr;
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}
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cdm::Host_8* host = static_cast<cdm::Host_8*>(
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get_cdm_host_func(cdm_interface_version, user_data));
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ClearKeyCDM* clearKey = new ClearKeyCDM(host);
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CK_LOGE("Created ClearKeyCDM instance!");
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return clearKey;
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}
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const size_t TEST_READ_SIZE = 16 * 1024;
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bool
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CanReadSome(cdm::PlatformFile aFile)
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{
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vector<uint8_t> data;
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data.resize(TEST_READ_SIZE);
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#ifdef XP_WIN
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DWORD bytesRead = 0;
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return ReadFile(aFile, &data.front(), TEST_READ_SIZE, &bytesRead, nullptr) &&
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bytesRead > 0;
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#else
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return read(aFile, &data.front(), TEST_READ_SIZE) > 0;
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#endif
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}
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void
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ClosePlatformFile(cdm::PlatformFile aFile)
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{
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#ifdef XP_WIN
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CloseHandle(aFile);
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#else
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close(aFile);
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#endif
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}
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CDM_API
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bool
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VerifyCdmHost_0(const cdm::HostFile* aHostFiles, uint32_t aNumFiles)
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{
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// We expect 4 binaries: clearkey, libxul, plugin-container, and Firefox.
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bool rv = (aNumFiles == 4);
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// Verify that each binary is readable inside the sandbox,
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// and close the handle.
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for (uint32_t i = 0; i < aNumFiles; i++) {
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const cdm::HostFile& hostFile = aHostFiles[i];
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if (hostFile.file != cdm::kInvalidPlatformFile) {
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if (!CanReadSome(hostFile.file)) {
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rv = false;
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}
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ClosePlatformFile(hostFile.file);
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}
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if (hostFile.sig_file != cdm::kInvalidPlatformFile) {
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ClosePlatformFile(hostFile.sig_file);
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}
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}
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sCanReadHostVerificationFiles = rv;
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return rv;
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}
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} // extern "C".
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