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content / browser / renderer_host / pepper / pepper_internal_file_ref_backend.cc [blame]
// 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 "content/browser/renderer_host/pepper/pepper_internal_file_ref_backend.h"
#include <string.h>
#include <string>
#include <vector>
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/strings/escape.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/file_system/browser_file_system_helper.h"
#include "content/browser/renderer_host/pepper/pepper_file_system_browser_host.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/storage_partition.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_file_info.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/ppb_file_ref.h"
#include "ppapi/host/dispatch_host_message.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/file_ref_create_info.h"
#include "ppapi/shared_impl/file_ref_util.h"
#include "ppapi/shared_impl/file_type_conversion.h"
#include "ppapi/shared_impl/scoped_pp_var.h"
#include "ppapi/shared_impl/time_conversion.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_file_ref_api.h"
#include "ppapi/thunk/ppb_file_system_api.h"
#include "storage/browser/file_system/copy_or_move_hook_delegate.h"
#include "storage/browser/file_system/file_system_operation.h"
#include "storage/browser/file_system/file_system_operation_runner.h"
#include "storage/browser/file_system/file_system_url.h"
#include "storage/common/file_system/file_system_util.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
using ppapi::host::PpapiHost;
using ppapi::host::ResourceHost;
namespace content {
namespace {
void CallCreateDirectory(
scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& url,
bool exclusive,
bool recursive,
storage::FileSystemOperationRunner::StatusCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->CreateDirectory(
url, exclusive, recursive, std::move(callback));
}
void CallReadDirectory(
scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& url,
const storage::FileSystemOperationRunner::ReadDirectoryCallback& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->ReadDirectory(url,
std::move(callback));
}
void CallRemove(scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& url,
bool recursive,
storage::FileSystemOperationRunner::StatusCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->Remove(url, recursive,
std::move(callback));
}
void CallTouchFile(
scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
storage::FileSystemOperationRunner::StatusCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->TouchFile(
url, last_access_time, last_modified_time, std::move(callback));
}
void CallMove(scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& src_path,
const storage::FileSystemURL& dest_path,
storage::FileSystemOperationRunner::CopyOrMoveOptionSet options,
storage::FileSystemOperationRunner::StatusCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->Move(
src_path, dest_path, options,
storage::FileSystemOperation::ERROR_BEHAVIOR_ABORT,
std::make_unique<storage::CopyOrMoveHookDelegate>(), std::move(callback));
}
void CallGetMetadata(
scoped_refptr<storage::FileSystemContext> file_system_context,
const storage::FileSystemURL& url,
storage::FileSystemOperation::GetMetadataFieldSet fields,
storage::FileSystemOperationRunner::GetMetadataCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
file_system_context->operation_runner()->GetMetadata(url, fields,
std::move(callback));
}
} // namespace
PepperInternalFileRefBackend::PepperInternalFileRefBackend(
PpapiHost* host,
int render_process_id,
base::WeakPtr<PepperFileSystemBrowserHost> fs_host,
const std::string& path)
: host_(host),
render_process_id_(render_process_id),
fs_host_(fs_host),
fs_type_(fs_host->GetType()),
path_(path) {
ppapi::NormalizeInternalPath(&path_);
}
PepperInternalFileRefBackend::~PepperInternalFileRefBackend() {}
storage::FileSystemURL PepperInternalFileRefBackend::GetFileSystemURL() const {
if (!fs_url_.is_valid() && fs_host_.get() && fs_host_->IsOpened()) {
GURL fs_path =
fs_host_->GetRootUrl().Resolve(base::EscapePath(path_.substr(1)));
scoped_refptr<storage::FileSystemContext> fs_context =
GetFileSystemContext();
if (fs_context.get())
fs_url_ = fs_context->CrackURL(
fs_path,
blink::StorageKey::CreateFirstParty(url::Origin::Create(fs_path)));
}
return fs_url_;
}
base::FilePath PepperInternalFileRefBackend::GetExternalFilePath() const {
return base::FilePath();
}
scoped_refptr<storage::FileSystemContext>
PepperInternalFileRefBackend::GetFileSystemContext() const {
return PepperFileSystemBrowserHost::GetFileSystemContextFromRenderId(
render_process_id_);
}
void PepperInternalFileRefBackend::DidFinish(
ppapi::host::ReplyMessageContext context,
const IPC::Message& msg,
base::File::Error error) {
context.params.set_result(ppapi::FileErrorToPepperError(error));
host_->SendReply(context, msg);
}
void PepperInternalFileRefBackend::DidFinishOnIOThread(
base::WeakPtr<PepperInternalFileRefBackend> weak_ptr,
ppapi::host::ReplyMessageContext reply_context,
const IPC::Message& msg,
base::File::Error error) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&PepperInternalFileRefBackend::DidFinish,
weak_ptr, reply_context, msg, error));
}
void PepperInternalFileRefBackend::ReadDirectoryCompleteOnIOThread(
base::WeakPtr<PepperInternalFileRefBackend> weak_ptr,
ppapi::host::ReplyMessageContext reply_context,
storage::FileSystemOperation::FileEntryList* accumulated_file_list,
base::File::Error error,
storage::FileSystemOperation::FileEntryList file_list,
bool has_more) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Don't insert the last |file_list| since it'll be added in the post task
// below.
if (has_more) {
accumulated_file_list->insert(accumulated_file_list->end(),
file_list.begin(), file_list.end());
return;
}
// If there are no more, this callback will be deleted and with it
// |accumulated_file_list| so make a new copy.
auto* accumulated_file_list2 =
new storage::FileSystemOperation::FileEntryList;
accumulated_file_list2->swap(*accumulated_file_list);
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&PepperInternalFileRefBackend::ReadDirectoryComplete,
weak_ptr, reply_context,
base::Owned(accumulated_file_list2), error, file_list,
false));
}
void PepperInternalFileRefBackend::GetMetadataCompleteOnIOThread(
base::WeakPtr<PepperInternalFileRefBackend> weak_ptr,
ppapi::host::ReplyMessageContext reply_context,
base::File::Error result,
const base::File::Info& file_info) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&PepperInternalFileRefBackend::GetMetadataComplete,
weak_ptr, reply_context, result, file_info));
}
int32_t PepperInternalFileRefBackend::MakeDirectory(
ppapi::host::ReplyMessageContext reply_context,
int32_t make_directory_flags) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
bool exclusive = !!(make_directory_flags & PP_MAKEDIRECTORYFLAG_EXCLUSIVE);
bool recursive =
!!(make_directory_flags & PP_MAKEDIRECTORYFLAG_WITH_ANCESTORS);
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallCreateDirectory, GetFileSystemContext(), GetFileSystemURL(),
exclusive, recursive,
base::BindOnce(&PepperInternalFileRefBackend::DidFinishOnIOThread,
weak_factory_.GetWeakPtr(), reply_context,
PpapiPluginMsg_FileRef_MakeDirectoryReply())));
return PP_OK_COMPLETIONPENDING;
}
int32_t PepperInternalFileRefBackend::Touch(
ppapi::host::ReplyMessageContext reply_context,
PP_Time last_access_time_in,
PP_Time last_modified_time_in) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
base::Time last_access_time = ppapi::PPTimeToTime(last_access_time_in);
base::Time last_modified_time = ppapi::PPTimeToTime(last_modified_time_in);
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallTouchFile, GetFileSystemContext(), GetFileSystemURL(),
last_access_time, last_modified_time,
base::BindOnce(&PepperInternalFileRefBackend::DidFinishOnIOThread,
weak_factory_.GetWeakPtr(), reply_context,
PpapiPluginMsg_FileRef_TouchReply())));
return PP_OK_COMPLETIONPENDING;
}
int32_t PepperInternalFileRefBackend::Delete(
ppapi::host::ReplyMessageContext reply_context) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallRemove, GetFileSystemContext(), GetFileSystemURL(), false,
base::BindOnce(&PepperInternalFileRefBackend::DidFinishOnIOThread,
weak_factory_.GetWeakPtr(), reply_context,
PpapiPluginMsg_FileRef_DeleteReply())));
return PP_OK_COMPLETIONPENDING;
}
int32_t PepperInternalFileRefBackend::Rename(
ppapi::host::ReplyMessageContext reply_context,
PepperFileRefHost* new_file_ref) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
storage::FileSystemURL new_url = new_file_ref->GetFileSystemURL();
if (!new_url.is_valid())
return PP_ERROR_FAILED;
if (!new_url.IsInSameFileSystem(GetFileSystemURL()))
return PP_ERROR_FAILED;
storage::FileSystemOperationRunner::CopyOrMoveOptionSet options =
storage::FileSystemOperation::CopyOrMoveOptionSet();
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallMove, GetFileSystemContext(), GetFileSystemURL(), new_url,
options,
base::BindOnce(&PepperInternalFileRefBackend::DidFinishOnIOThread,
weak_factory_.GetWeakPtr(), reply_context,
PpapiPluginMsg_FileRef_RenameReply())));
return PP_OK_COMPLETIONPENDING;
}
int32_t PepperInternalFileRefBackend::Query(
ppapi::host::ReplyMessageContext reply_context) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
constexpr storage::FileSystemOperation::GetMetadataFieldSet fields = {
storage::FileSystemOperation::GetMetadataField::kIsDirectory,
storage::FileSystemOperation::GetMetadataField::kSize,
storage::FileSystemOperation::GetMetadataField::kLastModified};
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallGetMetadata, GetFileSystemContext(), GetFileSystemURL(), fields,
base::BindRepeating(
&PepperInternalFileRefBackend::GetMetadataCompleteOnIOThread,
weak_factory_.GetWeakPtr(), reply_context)));
return PP_OK_COMPLETIONPENDING;
}
void PepperInternalFileRefBackend::GetMetadataComplete(
ppapi::host::ReplyMessageContext reply_context,
base::File::Error error,
const base::File::Info& file_info) {
reply_context.params.set_result(ppapi::FileErrorToPepperError(error));
PP_FileInfo pp_file_info;
if (error == base::File::FILE_OK)
ppapi::FileInfoToPepperFileInfo(file_info, fs_type_, &pp_file_info);
else
memset(&pp_file_info, 0, sizeof(pp_file_info));
host_->SendReply(reply_context,
PpapiPluginMsg_FileRef_QueryReply(pp_file_info));
}
int32_t PepperInternalFileRefBackend::ReadDirectoryEntries(
ppapi::host::ReplyMessageContext reply_context) {
if (!GetFileSystemURL().is_valid())
return PP_ERROR_FAILED;
storage::FileSystemOperation::FileEntryList* accumulated_file_list =
new storage::FileSystemOperation::FileEntryList;
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
CallReadDirectory, GetFileSystemContext(), GetFileSystemURL(),
base::BindRepeating(
&PepperInternalFileRefBackend::ReadDirectoryCompleteOnIOThread,
weak_factory_.GetWeakPtr(), reply_context,
base::Owned(accumulated_file_list))));
return PP_OK_COMPLETIONPENDING;
}
void PepperInternalFileRefBackend::ReadDirectoryComplete(
ppapi::host::ReplyMessageContext context,
storage::FileSystemOperation::FileEntryList* accumulated_file_list,
base::File::Error error,
storage::FileSystemOperation::FileEntryList file_list,
bool has_more) {
accumulated_file_list->insert(accumulated_file_list->end(), file_list.begin(),
file_list.end());
if (has_more)
return;
context.params.set_result(ppapi::FileErrorToPepperError(error));
std::vector<ppapi::FileRefCreateInfo> infos;
std::vector<PP_FileType> file_types;
if (error == base::File::FILE_OK && fs_host_.get()) {
std::string dir_path = path_;
if (dir_path.empty() || dir_path.back() != '/')
dir_path += '/';
for (const auto& it : *accumulated_file_list) {
file_types.push_back(it.type == filesystem::mojom::FsFileType::DIRECTORY
? PP_FILETYPE_DIRECTORY
: PP_FILETYPE_REGULAR);
ppapi::FileRefCreateInfo info;
info.file_system_type = fs_type_;
info.file_system_plugin_resource = fs_host_->pp_resource();
std::string path = dir_path + storage::FilePathToString(it.name.path());
info.internal_path = path;
info.display_name = ppapi::GetNameForInternalFilePath(path);
infos.push_back(info);
}
}
host_->SendReply(context, PpapiPluginMsg_FileRef_ReadDirectoryEntriesReply(
infos, file_types));
}
int32_t PepperInternalFileRefBackend::GetAbsolutePath(
ppapi::host::ReplyMessageContext reply_context) {
host_->SendReply(reply_context,
PpapiPluginMsg_FileRef_GetAbsolutePathReply(path_));
return PP_OK_COMPLETIONPENDING;
}
int32_t PepperInternalFileRefBackend::CanRead() const {
storage::FileSystemURL url = GetFileSystemURL();
if (!FileSystemURLIsValid(GetFileSystemContext().get(), url))
return PP_ERROR_FAILED;
if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFileSystemFile(
render_process_id_, url)) {
return PP_ERROR_NOACCESS;
}
return PP_OK;
}
int32_t PepperInternalFileRefBackend::CanWrite() const {
storage::FileSystemURL url = GetFileSystemURL();
if (!FileSystemURLIsValid(GetFileSystemContext().get(), url))
return PP_ERROR_FAILED;
if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanWriteFileSystemFile(
render_process_id_, url)) {
return PP_ERROR_NOACCESS;
}
return PP_OK;
}
int32_t PepperInternalFileRefBackend::CanCreate() const {
storage::FileSystemURL url = GetFileSystemURL();
if (!FileSystemURLIsValid(GetFileSystemContext().get(), url))
return PP_ERROR_FAILED;
if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanCreateFileSystemFile(
render_process_id_, url)) {
return PP_ERROR_NOACCESS;
}
return PP_OK;
}
int32_t PepperInternalFileRefBackend::CanReadWrite() const {
storage::FileSystemURL url = GetFileSystemURL();
if (!FileSystemURLIsValid(GetFileSystemContext().get(), url))
return PP_ERROR_FAILED;
ChildProcessSecurityPolicyImpl* policy =
ChildProcessSecurityPolicyImpl::GetInstance();
if (!policy->CanReadFileSystemFile(render_process_id_, url) ||
!policy->CanWriteFileSystemFile(render_process_id_, url)) {
return PP_ERROR_NOACCESS;
}
return PP_OK;
}
} // namespace content