| /* |
| * Copyright (C) 2021 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 "utils.h" |
| |
| #include <sstream> |
| |
| #include "parse_string.h" |
| |
| namespace android::vintf::details { |
| |
| std::optional<FqInstance> convertLegacyInstanceIntoFqInstance( |
| const std::string& package, const Version& version, const std::string& interface, |
| const std::string& instance, HalFormat format, std::string* appendedError) { |
| // Attempt to construct a good error message. |
| std::stringstream ss; |
| ss << "Invalid instance: '"; |
| if (format == HalFormat::AIDL) { |
| ss << toAidlFqnameString(package, interface, instance) << " (@" << version.minorVer << ")"; |
| } else { |
| ss << toFQNameString(package, version, interface, instance); |
| } |
| ss << "'. "; |
| |
| // Attempt to guess the source of error. |
| bool foundError = false; |
| details::FQName fqName; |
| if (!fqName.setTo(package)) { |
| ss << "Package '" << package |
| << "' should have the format [a-zA-Z_][a-zA-Z0-9_]*(\\.[a-zA-Z_][a-zA-Z0-9_]*)*"; |
| foundError = true; |
| } |
| |
| switch (format) { |
| case HalFormat::HIDL: |
| case HalFormat::AIDL: { |
| if (!fqName.setTo(interface) || !fqName.isInterfaceName()) { |
| ss << "Interface '" << interface << "' should have the format I[a-zA-Z0-9_]*"; |
| foundError = true; |
| } |
| } break; |
| case HalFormat::NATIVE: { |
| if (!interface.empty() && (!fqName.setTo(interface) || !fqName.isInterfaceName())) { |
| ss << "Interface '" << interface << "' should have the format I[a-zA-Z0-9_]*"; |
| foundError = true; |
| } |
| } break; |
| } |
| |
| if (foundError) { |
| if (appendedError != nullptr) { |
| *appendedError += ss.str() + "\n"; |
| } |
| return std::nullopt; |
| } |
| |
| // AIDL HAL <fqname> never contains version |
| std::optional<FqInstance> parsed; |
| switch (format) { |
| case HalFormat::HIDL: |
| case HalFormat::NATIVE: |
| parsed = FqInstance::from(version.majorVer, version.minorVer, interface, instance); |
| break; |
| case HalFormat::AIDL: |
| // AIDL HAL <fqname> never contains version |
| parsed = FqInstance::from(interface, instance); |
| break; |
| } |
| if (!parsed.has_value()) { |
| if (appendedError != nullptr) { |
| std::string debugString = format == HalFormat::AIDL |
| ? toAidlFqnameString(package, interface, instance) |
| : toFQNameString(package, version, interface, instance); |
| |
| *appendedError += "Invalid FqInstance: " + debugString + "\n"; |
| } |
| } |
| |
| return parsed; |
| } |
| |
| bool isCoreHal(const std::string& halName) { |
| std::vector<std::string_view> allowedPrefixes{ |
| "android.hardware.", |
| "android.frameworks.", |
| "android.system.", |
| }; |
| for (auto allowedPrefix : allowedPrefixes) { |
| if (halName.substr(0, allowedPrefix.size()) == allowedPrefix) { |
| return true; |
| } |
| } |
| if (halName == "mapper") { |
| return true; |
| } |
| return false; |
| } |
| |
| } // namespace android::vintf::details |