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/*
* 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 <functional>
#include <optional>
#include <string>
#include <unordered_map>
#include <vector>
#include "log.pb.h"
// Options passed via environment variables from the interceptor starter
constexpr static auto ENV_command_log = "INTERCEPTOR_command_log";
constexpr static auto ENV_root_dir = "INTERCEPTOR_root_dir";
namespace interceptor {
// Some type definitions to gain some type safety
using ArgVec = std::vector<std::string>;
using EnvMap = std::unordered_map<std::string, std::string>;
using Inputs = std::vector<std::string>;
using Outputs = Inputs;
// Command abstraction
//
// This is a utility container to keep program, args and env in an accessible
// fashion. Most data structures are created lazily.
class Command {
public:
Command(const char* program, char* const argv[], char* const envp[]);
const std::string& program() const;
const ArgVec& args() const;
const EnvMap& env() const;
char* const* envp() const { return envp_; };
const Inputs& inputs() const { return inputs_; }
const Outputs& outputs() const { return outputs_; }
std::string repr() const;
log::Message message() const;
// make command line calls relative to ROOT_DIR
void make_relative();
// determine inputs/outputs
void analyze();
private:
std::string command() const;
std::string program_;
std::string cwd_;
char* const* argv_;
char* const* envp_;
mutable std::optional<ArgVec> args_;
mutable std::optional<EnvMap> env_;
Inputs inputs_;
Outputs outputs_;
};
// Command analysis
struct AnalysisResult {
Inputs inputs;
Outputs outputs;
};
} // namespace interceptor
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