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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.scheme() != "filesystem")
return false;
std::string temp = url.path();
// TODO(ericu): This should probably be done elsewhere after the stackable
// layers are properly in. We're supposed to reject any paths that contain
// '..' segments, but the GURL constructor is helpfully resolving them for us.
// Make sure there aren't any before we call it.
size_t pos = temp.find("..");
for (; pos != std::string::npos; pos = temp.find("..", pos + 1)) {
if ((pos == 0 || temp[pos - 1] == '/') &&
(pos == temp.length() - 2 || temp[pos + 2] == '/'))
return false;
}
// bare_url will look something like:
// http://example.com/temporary/dir/file.txt.
GURL bare_url(temp);
// The input URL was malformed, bail out early.
if (bare_url.path().empty())
return false;
origin = bare_url.GetOrigin();
// The input URL was malformed, bail out early.
if (origin.is_empty())
return false;
std::string path = net::UnescapeURLComponent(bare_url.path(),
net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS |
net::UnescapeRule::CONTROL_CHARS);
if (path.compare(0, strlen(kPersistentDir), kPersistentDir) == 0) {
file_system_type = kFileSystemTypePersistent;
path = path.substr(strlen(kPersistentDir));
} else if (path.compare(0, strlen(kTemporaryDir), kTemporaryDir) == 0) {
file_system_type = kFileSystemTypeTemporary;
path = path.substr(strlen(kTemporaryDir));
} else if (path.compare(0, strlen(kExternalDir), kExternalDir) == 0) {
file_system_type = kFileSystemTypeExternal;
path = path.substr(strlen(kExternalDir));
} else {
return false;
}
// Ensure the path is relative.
while (!path.empty() && path[0] == '/')
path.erase(0, 1);
if (origin_url)
*origin_url = origin;
if (type)
*type = file_system_type;
if (file_path)
#if defined(OS_WIN)
*file_path = FilePath(base::SysUTF8ToWide(path)).
NormalizeWindowsPathSeparators().StripTrailingSeparators();
#elif defined(OS_POSIX)
*file_path = FilePath(path).StripTrailingSeparators();
#endif
return true;
}
GURL GetFileSystemRootURI(
const GURL& origin_url, fileapi::FileSystemType type) {
std::string path("filesystem:");
path += origin_url.spec();
switch (type) {
case kFileSystemTypeTemporary:
path += (kTemporaryDir + 1); // We don't want the leading slash.
break;
case kFileSystemTypePersistent:
path += (kPersistentDir + 1); // We don't want the leading slash.
break;
case kFileSystemTypeExternal:
path += (kExternalDir + 1); // We don't want the leading slash.
break;
default:
NOTREACHED();
return GURL();
}
return GURL(path);
}
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.
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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