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// Copyright (c) 2012 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_util.h"
#include "build/build_config.h"
#include "base/file_path.h"
#include "base/logging.h"
#include "base/sys_string_conversions.h"
#include "base/utf_string_conversions.h"
#include "googleurl/src/gurl.h"
#include "net/base/escape.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
#include "webkit/fileapi/file_system_types.h"
namespace fileapi {
const char kPersistentDir[] = "/persistent";
const char kTemporaryDir[] = "/temporary";
const char kExternalDir[] = "/external";
const char kPersistentName[] = "Persistent";
const char kTemporaryName[] = "Temporary";
const char kExternalName[] = "External";
bool CrackFileSystemURL(const GURL& url, GURL* origin_url, FileSystemType* type,
FilePath* file_path) {
GURL origin;
FileSystemType file_system_type;
if (!url.is_valid() || !url.SchemeIsFileSystem())
return false;
DCHECK(url.inner_url());
std::string inner_path = url.inner_url()->path();
if (inner_path.compare(
0, arraysize(kPersistentDir) - 1, kPersistentDir) == 0) {
file_system_type = kFileSystemTypePersistent;
} else if (inner_path.compare(
0, arraysize(kTemporaryDir) - 1, kTemporaryDir) == 0) {
file_system_type = kFileSystemTypeTemporary;
} else if (inner_path.compare(
0, arraysize(kExternalDir) - 1, kExternalDir) == 0) {
file_system_type = kFileSystemTypeExternal;
} else {
return false;
}
std::string path = net::UnescapeURLComponent(url.path(),
net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS |
net::UnescapeRule::CONTROL_CHARS);
// Ensure the path is relative.
while (!path.empty() && path[0] == '/')
path.erase(0, 1);
FilePath converted_path = FilePath::FromUTF8Unsafe(path);
// All parent references should have been resolved in the renderer.
if (converted_path.ReferencesParent())
return false;
if (origin_url)
*origin_url = url.GetOrigin();
if (type)
*type = file_system_type;
if (file_path)
*file_path = converted_path.NormalizePathSeparators().
StripTrailingSeparators();
return true;
}
//TODO(ericu): Consider removing support for '\', even on Windows, if possible.
// There's a lot of test code that will need reworking, and we may have trouble
// with FilePath elsewhere [e.g. DirName and other methods may also need
// replacement].
FilePath VirtualPath::BaseName(const FilePath& virtual_path) {
FilePath::StringType path = virtual_path.value();
// Keep everything after the final separator, but if the pathname is only
// one character and it's a separator, leave it alone.
while (path.size() > 1 && FilePath::IsSeparator(path[path.size() - 1]))
path.resize(path.size() - 1);
FilePath::StringType::size_type last_separator =
path.find_last_of(FilePath::kSeparators);
if (last_separator != FilePath::StringType::npos &&
last_separator < path.size() - 1)
path.erase(0, last_separator + 1);
return FilePath(path);
}
void VirtualPath::GetComponents(
const FilePath& path, std::vector<FilePath::StringType>* components) {
DCHECK(components);
if (!components)
return;
components->clear();
if (path.value().empty())
return;
std::vector<FilePath::StringType> ret_val;
FilePath current = path;
FilePath base;
// Due to the way things are implemented, FilePath::DirName works here,
// whereas FilePath::BaseName doesn't.
while (current != current.DirName()) {
base = BaseName(current);
ret_val.push_back(base.value());
current = current.DirName();
}
*components =
std::vector<FilePath::StringType>(ret_val.rbegin(), ret_val.rend());
}
GURL GetFileSystemRootURI(const GURL& origin_url, FileSystemType type) {
// origin_url is based on a security origin, so http://foo.com or file:///
// instead of the corresponding filesystem URL.
DCHECK(!origin_url.SchemeIsFileSystem());
std::string url = "filesystem:" + origin_url.GetWithEmptyPath().spec();
switch (type) {
case kFileSystemTypeTemporary:
url += (kTemporaryDir + 1); // We don't want the leading slash.
break;
case kFileSystemTypePersistent:
url += (kPersistentDir + 1); // We don't want the leading slash.
break;
case kFileSystemTypeExternal:
url += (kExternalDir + 1); // We don't want the leading slash.
break;
default:
NOTREACHED();
return GURL();
}
url += "/";
return GURL(url);
}
std::string GetFileSystemName(const GURL& origin_url, FileSystemType type) {
std::string origin_identifier = GetOriginIdentifierFromURL(origin_url);
std::string type_string = GetFileSystemTypeString(type);
DCHECK(!type_string.empty());
return origin_identifier + ":" + type_string;
}
FileSystemType QuotaStorageTypeToFileSystemType(
quota::StorageType storage_type) {
switch (storage_type) {
case quota::kStorageTypeTemporary:
return kFileSystemTypeTemporary;
case quota::kStorageTypePersistent:
return kFileSystemTypePersistent;
default:
return kFileSystemTypeUnknown;
}
}
quota::StorageType FileSystemTypeToQuotaStorageType(FileSystemType type) {
switch (type) {
case kFileSystemTypeTemporary:
return quota::kStorageTypeTemporary;
case kFileSystemTypePersistent:
return quota::kStorageTypePersistent;
default:
return quota::kStorageTypeUnknown;
}
}
// TODO(kinuko): Merge these two methods (conversion methods between
// origin url <==> identifier) with the ones in the database module.
// http://crbug.com/116476
std::string GetOriginIdentifierFromURL(const GURL& url) {
WebKit::WebSecurityOrigin web_security_origin =
WebKit::WebSecurityOrigin::createFromString(UTF8ToUTF16(url.spec()));
return web_security_origin.databaseIdentifier().utf8();
}
GURL GetOriginURLFromIdentifier(const std::string& origin_identifier) {
WebKit::WebSecurityOrigin web_security_origin =
WebKit::WebSecurityOrigin::createFromDatabaseIdentifier(
UTF8ToUTF16(origin_identifier));
GURL origin_url(web_security_origin.toString());
// We need this work-around for file:/// URIs as
// createFromDatabaseIdentifier returns empty origin_url for them.
if (origin_url.spec().empty() &&
origin_identifier.find("file__") == 0)
return GURL("file:///");
return origin_url;
}
std::string GetFileSystemTypeString(FileSystemType type) {
switch (type) {
case kFileSystemTypeTemporary:
return fileapi::kTemporaryName;
case kFileSystemTypePersistent:
return fileapi::kPersistentName;
case kFileSystemTypeExternal:
return fileapi::kExternalName;
case kFileSystemTypeUnknown:
default:
return std::string();
}
}
} // namespace fileapi
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