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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "include/idmap2/PolicyUtils.h"
#include <sstream>
#include <string>
#include <vector>
#include "android-base/strings.h"
#include "idmap2/Policies.h"
using android::idmap2::policy::kPolicyStringToFlag;
namespace android::idmap2::utils {
Result<PolicyBitmask> PoliciesToBitmaskResult(const std::vector<std::string>& policies) {
std::vector<std::string> unknown_policies;
PolicyBitmask bitmask = 0;
for (const std::string& policy : policies) {
const auto result = std::find_if(kPolicyStringToFlag.begin(), kPolicyStringToFlag.end(),
[policy](const auto& it) { return policy == it.first; });
if (result != kPolicyStringToFlag.end()) {
bitmask |= result->second;
} else {
unknown_policies.emplace_back(policy.empty() ? "empty" : policy);
}
}
if (unknown_policies.empty()) {
return Result<PolicyBitmask>(bitmask);
}
auto prefix = unknown_policies.size() == 1 ? "policy" : "policies";
return Error("unknown %s: \"%s\"", prefix, android::base::Join(unknown_policies, ",").c_str());
}
std::vector<std::string> BitmaskToPolicies(const PolicyBitmask& bitmask) {
std::vector<std::string> policies;
for (const auto& policy : kPolicyStringToFlag) {
if ((bitmask & policy.second) != 0) {
policies.emplace_back(policy.first.to_string());
}
}
return policies;
}
} // namespace android::idmap2::utils
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