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95 lines
3.3 KiB
95 lines
3.3 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "hidden_api.h"
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#include <fstream>
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#include <sstream>
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#include "android-base/strings.h"
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#include "dex/dex_file-inl.h"
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namespace art {
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HiddenApi::HiddenApi(const char* filename, const ApiListFilter& api_list_filter)
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: api_list_filter_(api_list_filter) {
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CHECK(filename != nullptr);
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std::ifstream in(filename);
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for (std::string str; std::getline(in, str);) {
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std::vector<std::string> values = android::base::Split(str, ",");
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const std::string& signature = values[0];
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hiddenapi::ApiList membership;
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bool success = hiddenapi::ApiList::FromNames(values.begin() + 1, values.end(), &membership);
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CHECK(success) << "Unknown ApiList flag: " << str;
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CHECK(membership.IsValid()) << "Invalid ApiList: " << membership;
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AddSignatureToApiList(signature, membership);
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size_t pos = signature.find("->");
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if (pos != std::string::npos) {
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// Add the class name.
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AddSignatureToApiList(signature.substr(0, pos), membership);
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pos = signature.find('(');
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if (pos != std::string::npos) {
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// Add the class->method name (so stripping the signature).
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AddSignatureToApiList(signature.substr(0, pos), membership);
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}
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pos = signature.find(':');
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if (pos != std::string::npos) {
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// Add the class->field name (so stripping the type).
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AddSignatureToApiList(signature.substr(0, pos), membership);
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}
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}
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}
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}
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void HiddenApi::AddSignatureToApiList(const std::string& signature, hiddenapi::ApiList membership) {
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auto it = api_list_.find(signature);
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if (it == api_list_.end()) {
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// Does not exist yet. Add it to list.
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api_list_.emplace(signature, membership);
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} else if (membership.GetMaxAllowedSdkVersion() < it->second.GetMaxAllowedSdkVersion()) {
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// Already exist but `membership` is more restrictive.
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it->second = membership;
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} else {
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// Already exists and `membership` is equally or less restrictive.
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}
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}
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std::string HiddenApi::GetApiMethodName(const DexFile& dex_file, uint32_t method_index) {
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std::stringstream ss;
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const dex::MethodId& method_id = dex_file.GetMethodId(method_index);
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ss << dex_file.StringByTypeIdx(method_id.class_idx_)
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<< "->"
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<< dex_file.GetMethodName(method_id)
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<< dex_file.GetMethodSignature(method_id).ToString();
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return ss.str();
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}
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std::string HiddenApi::GetApiFieldName(const DexFile& dex_file, uint32_t field_index) {
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std::stringstream ss;
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const dex::FieldId& field_id = dex_file.GetFieldId(field_index);
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ss << dex_file.StringByTypeIdx(field_id.class_idx_)
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<< "->"
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<< dex_file.GetFieldName(field_id)
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<< ":"
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<< dex_file.GetFieldTypeDescriptor(field_id);
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return ss.str();
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}
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} // namespace art
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