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