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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/chromeos/fileapi/cros_mount_point_provider.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/utf_string_conversions.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileSystem.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
#include "webkit/fileapi/file_system_path_manager.h"
#include "webkit/glue/webkit_glue.h"
namespace chromeos {
const char CrosMountPointProvider::kLocalName[] = "Local";
const char CrosMountPointProvider::kLocalDirName[] = "/local/";
typedef struct {
const char* local_root_path;
const char* web_root_path;
} FixedExposedPaths;
// Top level file system elements exposed in FileAPI in ChromeOS:
FixedExposedPaths fixed_exposed_paths[] = {
{"/home/chronos/user/", "Downloads"},
{"/", "media"},
{"/", "tmp"},
};
CrosMountPointProvider::CrosMountPointProvider(
scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy)
: local_dir_name_(kLocalName),
special_storage_policy_(special_storage_policy) {
// TODO(zelidrag): There's got to be a better way to generate UUID.
srand(time(NULL));
std::string virtual_root;
virtual_root.append(base::StringPrintf("%hx%hx-%hx-%hx-%hx-%hx%hx%hx",
static_cast<unsigned short>(rand()), static_cast<unsigned short>(rand()),
static_cast<unsigned short>(rand()),
static_cast<unsigned short>(rand()),
static_cast<unsigned short>(rand()),
static_cast<unsigned short>(rand()), static_cast<unsigned short>(rand()),
static_cast<unsigned short>(rand())));
// Create virtual root node.
virtual_root_path_ = FilePath(virtual_root);
base_path_ = virtual_root_path_.Append(local_dir_name_);
for (size_t i = 0; i < arraysize(fixed_exposed_paths); i++) {
mount_point_map_.insert(std::pair<std::string, std::string>(
std::string(fixed_exposed_paths[i].web_root_path),
std::string(fixed_exposed_paths[i].local_root_path)));
}
}
CrosMountPointProvider::~CrosMountPointProvider() {
}
// TODO(zelidrag) share with SandboxMountPointProvider impl.
std::string GetOriginIdentifierFromURL(
const GURL& url) {
WebKit::WebSecurityOrigin web_security_origin =
WebKit::WebSecurityOrigin::createFromString(UTF8ToUTF16(url.spec()));
return web_security_origin.databaseIdentifier().utf8();
}
void CrosMountPointProvider::GetFileSystemRootPath(
const GURL& origin_url,
fileapi::FileSystemType type,
bool create,
fileapi::FileSystemPathManager::GetRootPathCallback* callback_ptr) {
DCHECK(type == fileapi::kFileSystemTypeLocal);
std::string name(GetOriginIdentifierFromURL(origin_url));
name += ':';
name += CrosMountPointProvider::kLocalName;
FilePath root_path = FilePath(CrosMountPointProvider::kLocalDirName);
callback_ptr->Run(!root_path.empty(), root_path, name);
}
// Like GetFileSystemRootPath, but synchronous, and can be called only while
// running on the file thread.
FilePath CrosMountPointProvider::GetFileSystemRootPathOnFileThread(
const GURL& origin_url,
fileapi::FileSystemType type,
const FilePath& virtual_path,
bool create) {
DCHECK(type == fileapi::kFileSystemTypeLocal);
std::vector<FilePath::StringType> components;
virtual_path.GetComponents(&components);
if (components.size() < 1) {
return FilePath();
}
// Check if this root directory is exposed by this provider.
MountPointMap::iterator iter = mount_point_map_.find(components[0]);
if (iter == mount_point_map_.end()) {
return FilePath();
}
return FilePath(iter->second);
}
// TODO(zelidrag): Share this code with SandboxMountPointProvider impl.
bool CrosMountPointProvider::IsRestrictedFileName(const FilePath& path) const {
return false;
}
bool CrosMountPointProvider::IsAccessAllowed(const GURL& origin_url) {
return special_storage_policy_->IsLocalFileSystemAccessAllowed(origin_url);
}
} // namespace chromeos
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