зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.3 KiB
C++
78 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CDMStorageIdProvider.h"
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#include "GMPLog.h"
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#include "nsCOMPtr.h"
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#include "nsComponentManagerUtils.h"
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#include "nsICryptoHash.h"
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#ifdef SUPPORT_STORAGE_ID
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# include "rlz/lib/machine_id.h"
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#endif
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namespace mozilla {
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/*static*/
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nsCString CDMStorageIdProvider::ComputeStorageId(const nsCString& aOriginSalt) {
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#ifndef SUPPORT_STORAGE_ID
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return EmptyCString();
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#else
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GMP_LOG_DEBUG("CDMStorageIdProvider::ComputeStorageId");
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std::string machineId;
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if (!rlz_lib::GetMachineId(&machineId)) {
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GMP_LOG_DEBUG(
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"CDMStorageIdProvider::ComputeStorageId: get machineId failed.");
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return EmptyCString();
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}
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std::string originSalt(aOriginSalt.BeginReading(), aOriginSalt.Length());
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std::string input =
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machineId + originSalt + CDMStorageIdProvider::kBrowserIdentifier;
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nsresult rv;
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nsCOMPtr<nsICryptoHash> hasher =
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do_CreateInstance("@mozilla.org/security/hash;1", &rv);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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GMP_LOG_DEBUG(
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"CDMStorageIdProvider::ComputeStorageId: no crypto hash(0x%08" PRIx32
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")",
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static_cast<uint32_t>(rv));
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return EmptyCString();
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}
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rv = hasher->Init(nsICryptoHash::SHA256);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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GMP_LOG_DEBUG(
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"CDMStorageIdProvider::ComputeStorageId: failed to initialize "
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"hash(0x%08" PRIx32 ")",
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static_cast<uint32_t>(rv));
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return EmptyCString();
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}
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rv = hasher->Update(reinterpret_cast<const uint8_t*>(input.c_str()),
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input.size());
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if (NS_WARN_IF(NS_FAILED(rv))) {
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GMP_LOG_DEBUG(
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"CDMStorageIdProvider::ComputeStorageId: failed to update "
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"hash(0x%08" PRIx32 ")",
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static_cast<uint32_t>(rv));
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return EmptyCString();
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}
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nsCString storageId;
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rv = hasher->Finish(false, storageId);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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GMP_LOG_DEBUG(
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"CDMStorageIdProvider::ComputeStorageId: failed to get the final hash "
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"result(0x%08" PRIx32 ")",
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static_cast<uint32_t>(rv));
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return EmptyCString();
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}
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return storageId;
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#endif
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}
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} // namespace mozilla
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