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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_url.h"
#include <sstream>
#include "base/logging.h"
#include "base/string_util.h"
#include "net/base/escape.h"
#include "webkit/fileapi/external_mount_points.h"
#include "webkit/fileapi/file_system_types.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/isolated_context.h"
namespace fileapi {
namespace {
bool ParseFileSystemURL(const GURL& url,
GURL* origin_url,
FileSystemType* type,
base::FilePath* file_path) {
GURL origin;
FileSystemType file_system_type = kFileSystemTypeUnknown;
if (!url.is_valid() || !url.SchemeIsFileSystem())
return false;
DCHECK(url.inner_url());
std::string inner_path = url.inner_url()->path();
const struct {
FileSystemType type;
const char* dir;
} kValidTypes[] = {
{ kFileSystemTypePersistent, kPersistentDir },
{ kFileSystemTypeTemporary, kTemporaryDir },
{ kFileSystemTypeIsolated, kIsolatedDir },
{ kFileSystemTypeExternal, kExternalDir },
{ kFileSystemTypeTest, kTestDir },
};
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kValidTypes); ++i) {
if (StartsWithASCII(inner_path, kValidTypes[i].dir, true)) {
file_system_type = kValidTypes[i].type;
break;
}
}
if (file_system_type == kFileSystemTypeUnknown)
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);
base::FilePath converted_path = base::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;
}
} // namespace
FileSystemURL::FileSystemURL()
: is_valid_(false),
type_(kFileSystemTypeUnknown),
mount_type_(kFileSystemTypeUnknown) {
}
// static
FileSystemURL FileSystemURL::CreateForTest(const GURL& url) {
return FileSystemURL(url);
}
FileSystemURL FileSystemURL::CreateForTest(const GURL& origin,
FileSystemType type,
const base::FilePath& path) {
return FileSystemURL(origin, type, path);
}
FileSystemURL::FileSystemURL(const GURL& url)
: type_(kFileSystemTypeUnknown),
mount_type_(kFileSystemTypeUnknown) {
is_valid_ = ParseFileSystemURL(url, &origin_, &type_, &path_);
mount_type_ = type_;
}
FileSystemURL::FileSystemURL(const GURL& origin,
FileSystemType type,
const base::FilePath& path)
: is_valid_(true),
origin_(origin),
type_(type),
mount_type_(type),
path_(path.NormalizePathSeparators()) {
}
FileSystemURL::FileSystemURL(const GURL& origin,
FileSystemType original_type,
const base::FilePath& original_path,
const std::string& filesystem_id,
FileSystemType cracked_type,
const base::FilePath& cracked_path)
: is_valid_(true),
origin_(origin),
type_(cracked_type),
mount_type_(original_type),
path_(cracked_path.NormalizePathSeparators()),
filesystem_id_(filesystem_id),
virtual_path_(original_path.NormalizePathSeparators()) {
}
FileSystemURL::~FileSystemURL() {}
std::string FileSystemURL::DebugString() const {
if (!is_valid_)
return "invalid filesystem: URL";
std::ostringstream ss;
ss << GetFileSystemRootURI(origin_, mount_type_);
// filesystem_id_ will be non empty for (and only for) cracked URLs.
if (!filesystem_id_.empty()) {
ss << virtual_path_.value();
ss << " (";
ss << GetFileSystemTypeString(type_) << "@" << filesystem_id_ << ":";
ss << path_.value();
ss << ")";
} else {
ss << path_.value();
}
return ss.str();
}
FileSystemURL FileSystemURL::WithPath(const base::FilePath& path) const {
FileSystemURL url = *this;
url.path_ = path;
url.virtual_path_.clear();
return url;
}
bool FileSystemURL::IsParent(const FileSystemURL& child) const {
return origin() == child.origin() &&
type() == child.type() &&
filesystem_id() == child.filesystem_id() &&
path().IsParent(child.path());
}
bool FileSystemURL::operator==(const FileSystemURL& that) const {
return origin_ == that.origin_ &&
type_ == that.type_ &&
path_ == that.path_ &&
filesystem_id_ == that.filesystem_id_ &&
is_valid_ == that.is_valid_;
}
bool FileSystemURL::Comparator::operator()(const FileSystemURL& lhs,
const FileSystemURL& rhs) const {
DCHECK(lhs.is_valid_ && rhs.is_valid_);
if (lhs.origin_ != rhs.origin_)
return lhs.origin_ < rhs.origin_;
if (lhs.type_ != rhs.type_)
return lhs.type_ < rhs.type_;
if (lhs.filesystem_id_ != rhs.filesystem_id_)
return lhs.filesystem_id_ < rhs.filesystem_id_;
return lhs.path_ < rhs.path_;
}
} // namespace fileapi
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