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// Copyright (c) 2011 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 "webkit/fileapi/file_system_path_manager.h"
#include "base/rand_util.h"
#include "base/logging.h"
#include "base/memory/scoped_callback_factory.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/message_loop_proxy.h"
#include "base/stringprintf.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "googleurl/src/gurl.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileSystem.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/sandbox_mount_point_provider.h"
#include "webkit/glue/webkit_glue.h"
#if defined(OS_CHROMEOS)
#include "webkit/chromeos/fileapi/cros_mount_point_provider.h"
#endif
// We use some of WebKit types for conversions between origin identifiers
// and origin URLs.
using WebKit::WebFileSystem;
using base::PlatformFileError;
static const char kChromeScheme[] = "chrome";
static const char kExtensionScheme[] = "chrome-extension";
namespace fileapi {
FileSystemPathManager::FileSystemPathManager(
scoped_refptr<base::MessageLoopProxy> file_message_loop,
const FilePath& profile_path,
scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy,
bool is_incognito,
bool allow_file_access_from_files)
: is_incognito_(is_incognito),
allow_file_access_from_files_(allow_file_access_from_files),
sandbox_provider_(
new SandboxMountPointProvider(
ALLOW_THIS_IN_INITIALIZER_LIST(this),
file_message_loop,
profile_path)) {
#if defined(OS_CHROMEOS)
external_provider_.reset(
new chromeos::CrosMountPointProvider(special_storage_policy));
#endif
}
FileSystemPathManager::~FileSystemPathManager() {}
void FileSystemPathManager::ValidateFileSystemRootAndGetURL(
const GURL& origin_url, fileapi::FileSystemType type,
bool create, GetRootPathCallback* callback_ptr) {
scoped_ptr<GetRootPathCallback> callback(callback_ptr);
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
sandbox_provider_->ValidateFileSystemRootAndGetURL(
origin_url, type, create, callback.release());
break;
case kFileSystemTypeExternal:
if (external_provider_.get()) {
external_provider_->ValidateFileSystemRootAndGetURL(
origin_url, type, create, callback.release());
} else {
callback->Run(false, FilePath(), std::string());
}
break;
case kFileSystemTypeUnknown:
default:
NOTREACHED();
callback->Run(false, FilePath(), std::string());
}
}
FilePath FileSystemPathManager::ValidateFileSystemRootAndGetPathOnFileThread(
const GURL& origin_url, FileSystemType type, const FilePath& virtual_path,
bool create) {
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
return sandbox_provider_->ValidateFileSystemRootAndGetPathOnFileThread(
origin_url, type, virtual_path, create);
case kFileSystemTypeExternal:
return external_provider_.get() ?
external_provider_->ValidateFileSystemRootAndGetPathOnFileThread(
origin_url, type, virtual_path, create) :
FilePath();
case kFileSystemTypeUnknown:
default:
NOTREACHED();
return FilePath();
}
}
bool FileSystemPathManager::IsAllowedScheme(const GURL& url) const {
// Basically we only accept http or https. We allow file:// URLs
// only if --allow-file-access-from-files flag is given.
return url.SchemeIs("http") || url.SchemeIs("https") ||
url.SchemeIs(kExtensionScheme) || url.SchemeIs(kChromeScheme) ||
(url.SchemeIsFile() && allow_file_access_from_files_);
}
// static
std::string FileSystemPathManager::GetFileSystemTypeString(
fileapi::FileSystemType type) {
if (type == fileapi::kFileSystemTypeTemporary)
return fileapi::kTemporaryName;
else if (type == fileapi::kFileSystemTypePersistent)
return fileapi::kPersistentName;
else if (type == fileapi::kFileSystemTypeExternal)
return fileapi::kExternalName;
return std::string();
}
// Checks if a given |name| contains any restricted names/chars in it.
bool FileSystemPathManager::IsRestrictedFileName(
FileSystemType type, const FilePath& filename) {
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
return sandbox_provider_->IsRestrictedFileName(filename);
case kFileSystemTypeExternal:
return external_provider_.get() ?
external_provider_->IsRestrictedFileName(filename) : true;
case kFileSystemTypeUnknown:
default:
NOTREACHED();
return true;
}
}
// Checks if an origin has access to a particular filesystem type.
bool FileSystemPathManager::IsAccessAllowed(
const GURL& origin, FileSystemType type, const FilePath& virtual_path) {
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
if (!sandbox_provider_->IsAccessAllowed(origin, type, virtual_path))
return false;
break;
case kFileSystemTypeExternal:
if (!external_provider_.get() ||
!external_provider_->IsAccessAllowed(origin, type, virtual_path)) {
return false;
}
break;
case kFileSystemTypeUnknown:
default:
NOTREACHED();
return false;
}
return true;
}
FileSystemFileUtil* FileSystemPathManager::GetFileUtil(
FileSystemType type) const {
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
return sandbox_provider_->GetFileUtil();
case kFileSystemTypeExternal:
if (external_provider_.get()) {
return external_provider_->GetFileUtil();
} else {
NOTREACHED();
return NULL;
}
case kFileSystemTypeUnknown:
default:
NOTREACHED();
return NULL;
}
}
} // namespace fileapi
COMPILE_ASSERT(int(WebFileSystem::TypeTemporary) == \
int(fileapi::kFileSystemTypeTemporary), mismatching_enums);
COMPILE_ASSERT(int(WebFileSystem::TypePersistent) == \
int(fileapi::kFileSystemTypePersistent), mismatching_enums);
COMPILE_ASSERT(int(WebFileSystem::TypeExternal) == \
int(fileapi::kFileSystemTypeExternal), mismatching_enums);
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