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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/media_galleries/fileapi/supported_audio_video_checker.h"
#include <stddef.h>
#include <set>
#include <utility>
#include <vector>
#include "base/check_op.h"
#include "base/containers/contains.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/lazy_instance.h"
#include "base/location.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "chrome/services/media_gallery_util/public/cpp/safe_audio_video_checker.h"
#include "components/download/public/common/quarantine_connection.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "net/base/mime_util.h"
#include "third_party/blink/public/common/mime_util/mime_util.h"
namespace {
class SupportedAudioVideoExtensions {
public:
SupportedAudioVideoExtensions() {
std::vector<base::FilePath::StringType> extensions;
net::GetExtensionsForMimeType("audio/*", &extensions);
net::GetExtensionsForMimeType("video/*", &extensions);
for (size_t i = 0; i < extensions.size(); ++i) {
std::string mime_type;
if (net::GetWellKnownMimeTypeFromExtension(extensions[i], &mime_type) &&
blink::IsSupportedMimeType(mime_type)) {
audio_video_extensions_.insert(
base::FilePath::kExtensionSeparator + extensions[i]);
}
}
}
SupportedAudioVideoExtensions(const SupportedAudioVideoExtensions&) = delete;
SupportedAudioVideoExtensions& operator=(
const SupportedAudioVideoExtensions&) = delete;
bool HasSupportedAudioVideoExtension(const base::FilePath& file) {
return base::Contains(audio_video_extensions_, file.Extension());
}
private:
std::set<base::FilePath::StringType> audio_video_extensions_;
};
base::LazyInstance<SupportedAudioVideoExtensions>::DestructorAtExit
g_audio_video_extensions = LAZY_INSTANCE_INITIALIZER;
base::File OpenBlocking(const base::FilePath& path) {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
return base::File(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
}
} // namespace
SupportedAudioVideoChecker::~SupportedAudioVideoChecker() = default;
// static
bool SupportedAudioVideoChecker::SupportsFileType(const base::FilePath& path) {
return g_audio_video_extensions.Get().HasSupportedAudioVideoExtension(path);
}
void SupportedAudioVideoChecker::StartPreWriteValidation(
storage::CopyOrMoveFileValidator::ResultCallback result_callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
DCHECK(callback_.is_null());
callback_ = std::move(result_callback);
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
base::BindOnce(&OpenBlocking, path_),
base::BindOnce(&SupportedAudioVideoChecker::OnFileOpen,
weak_factory_.GetWeakPtr()));
}
SupportedAudioVideoChecker::SupportedAudioVideoChecker(
const base::FilePath& path,
download::QuarantineConnectionCallback quarantine_connection_callback)
: AVScanningFileValidator(quarantine_connection_callback), path_(path) {}
void SupportedAudioVideoChecker::OnFileOpen(base::File file) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
if (!file.IsValid()) {
std::move(callback_).Run(base::File::FILE_ERROR_SECURITY);
return;
}
safe_checker_ = std::make_unique<SafeAudioVideoChecker>(std::move(file),
std::move(callback_));
safe_checker_->Start();
}
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