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// Copyright 2013 The Chromium Authors. All rights reserved.
// 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_file_ref_host.h"
#include <string>
#include "content/browser/renderer_host/pepper/pepper_external_file_ref_backend.h"
#include "content/browser/renderer_host/pepper/pepper_file_system_browser_host.h"
#include "content/browser/renderer_host/pepper/pepper_internal_file_ref_backend.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/host/dispatch_host_message.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/file_ref_util.h"
#include "storage/browser/fileapi/file_permission_policy.h"
using ppapi::host::ResourceHost;
namespace content {
PepperFileRefBackend::~PepperFileRefBackend() {}
PepperFileRefHost::PepperFileRefHost(BrowserPpapiHost* host,
PP_Instance instance,
PP_Resource resource,
PP_Resource file_system,
const std::string& path)
: ResourceHost(host->GetPpapiHost(), instance, resource),
host_(host),
fs_type_(PP_FILESYSTEMTYPE_INVALID) {
if (!ppapi::IsValidInternalPath(path))
return;
int render_process_id;
int unused;
if (!host->GetRenderFrameIDsForInstance(
instance, &render_process_id, &unused)) {
return;
}
ResourceHost* fs_resource_host =
host->GetPpapiHost()->GetResourceHost(file_system);
if (fs_resource_host == NULL) {
DLOG(ERROR) << "Couldn't find FileSystem host: " << resource
<< " path: " << path;
return;
}
if (!fs_resource_host->IsFileSystemHost()) {
DLOG(ERROR) << "Filesystem PP_Resource is not PepperFileSystemBrowserHost";
return;
}
PepperFileSystemBrowserHost* file_system_host =
static_cast<PepperFileSystemBrowserHost*>(fs_resource_host);
file_system_host_ = file_system_host->AsWeakPtr();
fs_type_ = file_system_host->GetType();
if ((fs_type_ != PP_FILESYSTEMTYPE_LOCALPERSISTENT) &&
(fs_type_ != PP_FILESYSTEMTYPE_LOCALTEMPORARY) &&
(fs_type_ != PP_FILESYSTEMTYPE_EXTERNAL) &&
(fs_type_ != PP_FILESYSTEMTYPE_ISOLATED)) {
DLOG(ERROR) << "Unsupported filesystem type: " << fs_type_;
return;
}
if ((fs_type_ == PP_FILESYSTEMTYPE_EXTERNAL) &&
(!file_system_host->GetRootUrl().is_valid())) {
DLOG(ERROR) << "Native external filesystems are not supported by this "
<< "constructor.";
return;
}
backend_.reset(new PepperInternalFileRefBackend(host->GetPpapiHost(),
render_process_id,
file_system_host->AsWeakPtr(),
path));
}
PepperFileRefHost::PepperFileRefHost(BrowserPpapiHost* host,
PP_Instance instance,
PP_Resource resource,
const base::FilePath& external_path)
: ResourceHost(host->GetPpapiHost(), instance, resource),
host_(host),
fs_type_(PP_FILESYSTEMTYPE_EXTERNAL) {
if (!ppapi::IsValidExternalPath(external_path))
return;
int render_process_id;
int unused;
if (!host->GetRenderFrameIDsForInstance(
instance, &render_process_id, &unused)) {
return;
}
backend_.reset(new PepperExternalFileRefBackend(
host->GetPpapiHost(), render_process_id, external_path));
}
PepperFileRefHost::~PepperFileRefHost() {}
bool PepperFileRefHost::IsFileRefHost() { return true; }
PP_FileSystemType PepperFileRefHost::GetFileSystemType() const {
return fs_type_;
}
storage::FileSystemURL PepperFileRefHost::GetFileSystemURL() const {
if (backend_)
return backend_->GetFileSystemURL();
return storage::FileSystemURL();
}
base::FilePath PepperFileRefHost::GetExternalFilePath() const {
if (backend_)
return backend_->GetExternalFilePath();
return base::FilePath();
}
base::WeakPtr<PepperFileSystemBrowserHost>
PepperFileRefHost::GetFileSystemHost() const {
return file_system_host_;
}
int32_t PepperFileRefHost::CanRead() const {
if (backend_)
return backend_->CanRead();
return PP_ERROR_FAILED;
}
int32_t PepperFileRefHost::CanWrite() const {
if (backend_)
return backend_->CanWrite();
return PP_ERROR_FAILED;
}
int32_t PepperFileRefHost::CanCreate() const {
if (backend_)
return backend_->CanCreate();
return PP_ERROR_FAILED;
}
int32_t PepperFileRefHost::CanReadWrite() const {
if (backend_)
return backend_->CanReadWrite();
return PP_ERROR_FAILED;
}
int32_t PepperFileRefHost::OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) {
if (!backend_)
return PP_ERROR_FAILED;
PPAPI_BEGIN_MESSAGE_MAP(PepperFileRefHost, msg)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileRef_MakeDirectory,
OnMakeDirectory)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileRef_Touch, OnTouch)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_FileRef_Delete, OnDelete)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileRef_Rename, OnRename)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_FileRef_Query, OnQuery)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(
PpapiHostMsg_FileRef_ReadDirectoryEntries, OnReadDirectoryEntries)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_FileRef_GetAbsolutePath,
OnGetAbsolutePath)
PPAPI_END_MESSAGE_MAP()
return PP_ERROR_FAILED;
}
int32_t PepperFileRefHost::OnMakeDirectory(
ppapi::host::HostMessageContext* context,
int32_t make_directory_flags) {
int32_t rv = CanCreate();
if (rv != PP_OK)
return rv;
return backend_->MakeDirectory(context->MakeReplyMessageContext(),
make_directory_flags);
}
int32_t PepperFileRefHost::OnTouch(ppapi::host::HostMessageContext* context,
PP_Time last_access_time,
PP_Time last_modified_time) {
// TODO(teravest): Change this to be kWriteFilePermissions here and in
// fileapi_message_filter.
int32_t rv = CanCreate();
if (rv != PP_OK)
return rv;
return backend_->Touch(
context->MakeReplyMessageContext(), last_access_time, last_modified_time);
}
int32_t PepperFileRefHost::OnDelete(ppapi::host::HostMessageContext* context) {
int32_t rv = CanWrite();
if (rv != PP_OK)
return rv;
return backend_->Delete(context->MakeReplyMessageContext());
}
int32_t PepperFileRefHost::OnRename(ppapi::host::HostMessageContext* context,
PP_Resource new_file_ref) {
int32_t rv = CanReadWrite();
if (rv != PP_OK)
return rv;
ResourceHost* resource_host =
host_->GetPpapiHost()->GetResourceHost(new_file_ref);
if (!resource_host)
return PP_ERROR_BADRESOURCE;
PepperFileRefHost* file_ref_host = NULL;
if (resource_host->IsFileRefHost())
file_ref_host = static_cast<PepperFileRefHost*>(resource_host);
if (!file_ref_host)
return PP_ERROR_BADRESOURCE;
rv = file_ref_host->CanCreate();
if (rv != PP_OK)
return rv;
return backend_->Rename(context->MakeReplyMessageContext(), file_ref_host);
}
int32_t PepperFileRefHost::OnQuery(ppapi::host::HostMessageContext* context) {
int32_t rv = CanRead();
if (rv != PP_OK)
return rv;
return backend_->Query(context->MakeReplyMessageContext());
}
int32_t PepperFileRefHost::OnReadDirectoryEntries(
ppapi::host::HostMessageContext* context) {
int32_t rv = CanRead();
if (rv != PP_OK)
return rv;
return backend_->ReadDirectoryEntries(context->MakeReplyMessageContext());
}
int32_t PepperFileRefHost::OnGetAbsolutePath(
ppapi::host::HostMessageContext* context) {
if (!host_->GetPpapiHost()->permissions().HasPermission(
ppapi::PERMISSION_PRIVATE))
return PP_ERROR_NOACCESS;
return backend_->GetAbsolutePath(context->MakeReplyMessageContext());
}
} // namespace content
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