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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/fusebox/fusebox_moniker.h"
#include "base/strings/strcat.h"
#include "base/strings/string_util.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace fusebox {
// static
MonikerMap::ExtractTokenResult MonikerMap::ExtractToken(
const std::string& fs_url_as_string) {
if (!base::StartsWith(fs_url_as_string, fusebox::kMonikerSubdir)) {
ExtractTokenResult result;
result.result_type = ExtractTokenResult::ResultType::NOT_A_MONIKER_FS_URL;
return result;
}
size_t n = strlen(fusebox::kMonikerSubdir);
if (fs_url_as_string.size() <= n) {
ExtractTokenResult result;
result.result_type =
ExtractTokenResult::ResultType::MONIKER_FS_URL_BUT_ONLY_ROOT;
return result;
} else if (fs_url_as_string[n] != '/') {
ExtractTokenResult result;
result.result_type = ExtractTokenResult::ResultType::NOT_A_MONIKER_FS_URL;
return result;
}
std::string_view token_as_string_view =
std::string_view(fs_url_as_string).substr(n + 1);
if (token_as_string_view.size() > 32) {
if (token_as_string_view[32] != '.') {
ExtractTokenResult result;
result.result_type =
ExtractTokenResult::ResultType::MONIKER_FS_URL_BUT_NOT_WELL_FORMED;
return result;
}
token_as_string_view = token_as_string_view.substr(0, 32);
}
std::optional<base::Token> token =
base::Token::FromString(token_as_string_view);
if (!token) {
ExtractTokenResult result;
result.result_type =
ExtractTokenResult::ResultType::MONIKER_FS_URL_BUT_NOT_WELL_FORMED;
return result;
}
ExtractTokenResult result;
result.result_type = ExtractTokenResult::ResultType::OK;
result.token = *token;
return result;
}
// static
std::string MonikerMap::GetFilename(const Moniker& moniker) {
return fusebox::kMonikerFilenamePrefixWithTrailingSlash + moniker.ToString();
}
MonikerMap::MonikerMap() = default;
MonikerMap::~MonikerMap() = default;
Moniker MonikerMap::CreateMoniker(const storage::FileSystemURL& target,
bool read_only) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
Moniker moniker = base::Token::CreateRandom();
map_.insert({moniker, std::make_pair(target, read_only)});
return moniker;
}
void MonikerMap::DestroyMoniker(const Moniker& moniker) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
auto iter = map_.find(moniker);
if (iter != map_.end()) {
map_.erase(iter);
}
}
MonikerMap::FSURLAndReadOnlyState MonikerMap::Resolve(
const Moniker& moniker) const {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
auto iter = map_.find(moniker);
if (iter != map_.end()) {
return iter->second;
}
return std::make_pair(storage::FileSystemURL(), false);
}
base::Value MonikerMap::GetDebugJSON() {
base::Value::Dict dict;
for (const auto& i : map_) {
dict.Set(i.first.ToString(),
base::Value(base::StrCat(
{i.second.first.ToGURL().spec(),
i.second.second ? " (read-only)" : " (read-write)"})));
}
return base::Value(std::move(dict));
}
} // namespace fusebox
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