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/*
* Copyright (C) 2012 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.
*/
#pragma once
#include <ifaddrs.h>
#include <netdb.h>
#include <stddef.h>
#include <stdint.h>
#include <mutex>
#include <string>
#include <netdutils/UidConstants.h>
#include <private/android_filesystem_config.h>
enum IptablesTarget { V4, V6, V4V6 };
int execIptablesRestore(IptablesTarget target, const std::string& commands);
int execIptablesRestoreWithOutput(IptablesTarget target, const std::string& commands,
std::string *output);
int execIptablesRestoreCommand(IptablesTarget target, const std::string& table,
const std::string& command, std::string *output);
bool isIfaceName(const std::string& name);
int parsePrefix(const char *prefix, uint8_t *family, void *address, int size, uint8_t *prefixlen);
void blockSigpipe();
void setCloseOnExec(const char *sock);
// TODO: use std::size() instead.
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
#define __INT_STRLEN(i) sizeof(#i)
#define _INT_STRLEN(i) __INT_STRLEN(i)
#define INT32_STRLEN _INT_STRLEN(INT32_MIN)
#define UINT32_STRLEN _INT_STRLEN(UINT32_MAX)
#define UINT32_HEX_STRLEN sizeof("0x12345678")
#define IPSEC_IFACE_PREFIX "ipsec"
const uid_t INVALID_UID = static_cast<uid_t>(-1);
constexpr char TCP_RMEM_PROC_FILE[] = "/proc/sys/net/ipv4/tcp_rmem";
constexpr char TCP_WMEM_PROC_FILE[] = "/proc/sys/net/ipv4/tcp_wmem";
struct IfaddrsDeleter {
void operator()(struct ifaddrs *p) const {
if (p != nullptr) {
freeifaddrs(p);
}
}
};
typedef std::unique_ptr<struct ifaddrs, struct IfaddrsDeleter> ScopedIfaddrs;
namespace android::net {
/**
* This lock exists to make NetdNativeService RPCs (which come in on multiple Binder threads)
* coexist with the commands in CommandListener.cpp. These are presumed not thread-safe because
* CommandListener has only one user (NetworkManagementService), which is connected through a
* FrameworkListener that passes in commands one at a time.
*/
extern std::mutex gBigNetdLock;
} // namespace android::net