/*
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* Copyright (C) 2019 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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#ifndef _NDC_DISPATCHER_H__
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#define _NDC_DISPATCHER_H__
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#include <string>
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#include <android-base/logging.h>
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#include <android/net/IDnsResolver.h>
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#include <android/net/INetd.h>
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#include "binder/IServiceManager.h"
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#include "NetdConstants.h"
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namespace android {
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namespace net {
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class NdcClient {
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public:
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NdcClient() = default;
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~NdcClient() = default;
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int sendMsg(int code, const char* msg, bool addErrno) {
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if (addErrno) {
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printf("%d 0 %s (%s)\n", code, msg, strerror(errno));
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} else {
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printf("%d 0 %s\n", code, msg);
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}
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return 0;
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}
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};
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class NdcNetdCommand {
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public:
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NdcNetdCommand(std::string cmd) : mCommand(std::move(cmd)) {}
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virtual ~NdcNetdCommand() {}
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virtual int runCommand(NdcClient* c, int argc, char** argv) const = 0;
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const std::string& getCommand() const { return mCommand; }
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private:
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std::string mCommand;
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};
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class NdcDispatcher {
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public:
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// Matches the restrictions previously imposed by CommandListener.cpp.
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static const int CMD_ARGS_MAX = 26;
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// Default log level is set to minimum one.
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static const android::base::LogSeverity LOGLEVEL = android::base::VERBOSE;
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NdcDispatcher();
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~NdcDispatcher() = default;
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static sp<INetd> mNetd;
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static sp<IDnsResolver> mDnsResolver;
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NdcClient mNdc;
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int dispatchCommand(int argc, char** argv);
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void registerCmd(NdcNetdCommand* cmd);
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private:
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std::vector<NdcNetdCommand*> mCommands;
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class InterfaceCmd : public NdcNetdCommand {
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public:
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InterfaceCmd();
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virtual ~InterfaceCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class IpFwdCmd : public NdcNetdCommand {
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public:
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IpFwdCmd();
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virtual ~IpFwdCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class TetherCmd : public NdcNetdCommand {
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public:
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TetherCmd();
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virtual ~TetherCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class NatCmd : public NdcNetdCommand {
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public:
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NatCmd();
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virtual ~NatCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class BandwidthControlCmd : public NdcNetdCommand {
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public:
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BandwidthControlCmd();
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virtual ~BandwidthControlCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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protected:
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void sendGenericOkFail(NdcClient* cli, int cond) const;
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void sendGenericOpFailed(NdcClient* cli, const char* errMsg) const;
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void sendGenericSyntaxError(NdcClient* cli, const char* usageMsg) const;
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};
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class IdletimerControlCmd : public NdcNetdCommand {
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public:
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IdletimerControlCmd();
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virtual ~IdletimerControlCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class FirewallCmd : public NdcNetdCommand {
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public:
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FirewallCmd();
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virtual ~FirewallCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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protected:
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int sendGenericOkFail(NdcClient* cli, int cond) const;
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static int parseRule(const char* arg);
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static int parseFirewallType(const char* arg);
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static int parseChildChain(const char* arg);
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};
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class ClatdCmd : public NdcNetdCommand {
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public:
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ClatdCmd();
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virtual ~ClatdCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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};
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class StrictCmd : public NdcNetdCommand {
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public:
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StrictCmd();
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virtual ~StrictCmd() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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protected:
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int sendGenericOkFail(NdcClient* cli, int cond) const;
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static int parsePenalty(const char* arg);
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};
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class NetworkCommand : public NdcNetdCommand {
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public:
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NetworkCommand();
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virtual ~NetworkCommand() {}
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int runCommand(NdcClient* cli, int argc, char** argv) const;
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private:
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int syntaxError(NdcClient* cli, const char* message) const;
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int operationError(NdcClient* cli, const char* message, int ret) const;
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int success(NdcClient* cli) const;
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};
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};
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} // namespace net
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} // namespace android
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#endif
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