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NetdConstants.cpp
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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.
*/
#include <string.h>
#define LOG_TAG "Netd"
#include <cutils/log.h>
#include "NetdConstants.h"
const char * const OEM_SCRIPT_PATH = "/system/bin/oem-iptables-init.sh";
const char * const IPTABLES_PATH = "/system/bin/iptables";
const char * const IP6TABLES_PATH = "/system/bin/ip6tables";
const char * const TC_PATH = "/system/bin/tc";
const char * const IP_PATH = "/system/bin/ip";
const char * const ADD = "add";
const char * const DEL = "del";
static void logExecError(const char* argv[], int res) {
const char** argp = argv;
std::string args = "";
while (*argp) {
args += *argp;
args += ' ';
argp++;
}
ALOGE("exec() res=%d for %s", res, args.c_str());
}
static int execIptables(IptablesTarget target, bool silent, va_list args) {
/* Read arguments from incoming va_list; we expect the list to be NULL terminated. */
std::list<const char*> argsList;
argsList.push_back(NULL);
const char* arg;
do {
arg = va_arg(args, const char *);
argsList.push_back(arg);
} while (arg);
int i = 0;
const char* argv[argsList.size()];
std::list<const char*>::iterator it;
for (it = argsList.begin(); it != argsList.end(); it++, i++) {
argv[i] = *it;
}
int res = 0;
if (target == V4 || target == V4V6) {
argv[0] = IPTABLES_PATH;
int localRes = fork_and_execve(argv[0], argv);
if (localRes) {
if (!silent) {
logExecError(argv, localRes);
}
res |= localRes;
}
}
if (target == V6 || target == V4V6) {
argv[0] = IP6TABLES_PATH;
int localRes = fork_and_execve(argv[0], argv);
if (localRes) {
if (!silent) {
logExecError(argv, localRes);
}
res |= localRes;
}
}
return res;
}
int execIptables(IptablesTarget target, ...) {
va_list args;
va_start(args, target);
int res = execIptables(target, false, args);
va_end(args);
return res;
}
int execIptablesSilently(IptablesTarget target, ...) {
va_list args;
va_start(args, target);
int res = execIptables(target, true, args);
va_end(args);
return res;
}