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// Copyright 2019 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/file_system_access/file_system_access_permission_request_manager.h"
#include "base/command_line.h"
#include "chrome/browser/ui/file_system_access/file_system_access_dialogs.h"
#include "chrome/browser/ui/file_system_access/file_system_access_permission_dialog.h"
#include "components/permissions/permission_util.h"
#include "components/permissions/switches.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
namespace {
using FileRequestData =
FileSystemAccessPermissionRequestManager::FileRequestData;
using RequestData = FileSystemAccessPermissionRequestManager::RequestData;
using RequestType = FileSystemAccessPermissionRequestManager::RequestType;
bool AllFileRequestDataAreIdentical(const std::vector<FileRequestData>& a,
const std::vector<FileRequestData>& b) {
if (a.size() != b.size()) {
return false;
}
for (size_t i = 0; i < a.size(); i++) {
if (a[i].path_info.path != b[i].path_info.path ||
a[i].handle_type != b[i].handle_type || a[i].access != b[i].access) {
return false;
}
}
return true;
}
bool RequestsAreIdentical(const RequestData& a, const RequestData& b) {
return a.origin == b.origin && a.request_type == b.request_type &&
AllFileRequestDataAreIdentical(a.file_request_data,
b.file_request_data);
}
bool NewPermissionRequestsAreForSamePath(const RequestData& a,
const RequestData& b) {
return a.origin == b.origin &&
a.request_type == RequestType::kNewPermission &&
a.request_type == b.request_type && a.file_request_data.size() == 1 &&
a.file_request_data.size() == b.file_request_data.size() &&
a.file_request_data[0].path_info.path ==
b.file_request_data[0].path_info.path &&
a.file_request_data[0].handle_type ==
b.file_request_data[0].handle_type;
}
} // namespace
struct FileSystemAccessPermissionRequestManager::Request {
Request(
RequestData data,
base::OnceCallback<void(permissions::PermissionAction result)> callback,
base::ScopedClosureRunner fullscreen_block)
: data(std::move(data)) {
callbacks.push_back(std::move(callback));
fullscreen_blocks.push_back(std::move(fullscreen_block));
}
RequestData data;
std::vector<base::OnceCallback<void(permissions::PermissionAction result)>>
callbacks;
std::vector<base::ScopedClosureRunner> fullscreen_blocks;
};
FileSystemAccessPermissionRequestManager::
~FileSystemAccessPermissionRequestManager() = default;
FileSystemAccessPermissionRequestManager::RequestData::RequestData(
RequestType request_type,
const url::Origin& origin,
const std::vector<FileRequestData>& file_request_data)
: request_type(request_type),
origin(origin),
file_request_data(file_request_data) {}
FileSystemAccessPermissionRequestManager::RequestData::~RequestData() = default;
FileSystemAccessPermissionRequestManager::RequestData::RequestData(
RequestData&&) = default;
FileSystemAccessPermissionRequestManager::RequestData::RequestData(
const RequestData&) = default;
void FileSystemAccessPermissionRequestManager::AddRequest(
RequestData data,
base::OnceCallback<void(permissions::PermissionAction result)> callback,
base::ScopedClosureRunner fullscreen_block) {
if (data.request_type == RequestType::kNewPermission) {
DCHECK(data.file_request_data.size() == 1);
}
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
permissions::switches::kDenyPermissionPrompts)) {
std::move(callback).Run(permissions::PermissionAction::DENIED);
return;
}
// Check if any pending requests are identical to the new request.
if (current_request_ && RequestsAreIdentical(current_request_->data, data)) {
current_request_->callbacks.push_back(std::move(callback));
current_request_->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
for (const auto& request : queued_requests_) {
if (RequestsAreIdentical(request->data, data)) {
request->callbacks.push_back(std::move(callback));
request->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
if (NewPermissionRequestsAreForSamePath(request->data, data)) {
// This means access levels are different. Change the existing request
// to kReadWrite, and add the new callback.
request->data.file_request_data[0].access = Access::kReadWrite;
request->callbacks.push_back(std::move(callback));
request->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
}
queued_requests_.push_back(std::make_unique<Request>(
std::move(data), std::move(callback), std::move(fullscreen_block)));
if (!IsShowingRequest())
ScheduleShowRequest();
}
FileSystemAccessPermissionRequestManager::
FileSystemAccessPermissionRequestManager(content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
content::WebContentsUserData<FileSystemAccessPermissionRequestManager>(
*web_contents) {}
bool FileSystemAccessPermissionRequestManager::CanShowRequest() const {
// Deley showing requests until the main frame is fully loaded.
// ScheduleShowRequest() will be called again when that happens.
return web_contents()->IsDocumentOnLoadCompletedInPrimaryMainFrame() &&
!queued_requests_.empty() && !current_request_;
}
void FileSystemAccessPermissionRequestManager::ScheduleShowRequest() {
if (!CanShowRequest())
return;
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
&FileSystemAccessPermissionRequestManager::DequeueAndShowRequest,
weak_factory_.GetWeakPtr()));
}
void FileSystemAccessPermissionRequestManager::DequeueAndShowRequest() {
if (!CanShowRequest())
return;
current_request_ = std::move(queued_requests_.front());
queued_requests_.pop_front();
if (auto_response_for_test_) {
OnPermissionDialogResult(*auto_response_for_test_);
return;
}
switch (current_request_->data.request_type) {
case RequestType::kNewPermission:
ShowFileSystemAccessPermissionDialog(
current_request_->data,
base::BindOnce(&FileSystemAccessPermissionRequestManager::
OnPermissionDialogResult,
weak_factory_.GetWeakPtr()),
web_contents());
break;
case RequestType::kRestorePermissions:
ShowFileSystemAccessRestorePermissionDialog(
current_request_->data,
base::BindOnce(&FileSystemAccessPermissionRequestManager::
OnPermissionDialogResult,
weak_factory_.GetWeakPtr()),
web_contents());
break;
default:
NOTREACHED();
}
}
void FileSystemAccessPermissionRequestManager::
DocumentOnLoadCompletedInPrimaryMainFrame() {
// This is scheduled because while all calls to the browser have been
// issued at DOMContentLoaded, they may be bouncing around in scheduled
// callbacks finding the UI thread still. This makes sure we allow those
// scheduled calls to AddRequest to complete before we show the page-load
// permissions bubble.
if (!queued_requests_.empty()) {
ScheduleShowRequest();
}
}
void FileSystemAccessPermissionRequestManager::OnPermissionDialogResult(
permissions::PermissionAction result) {
DCHECK(current_request_);
for (auto& callback : current_request_->callbacks)
std::move(callback).Run(result);
current_request_ = nullptr;
if (!queued_requests_.empty())
ScheduleShowRequest();
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(FileSystemAccessPermissionRequestManager);
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