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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* Anytun is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _SYSEXEC_HPP
#define _SYSEXEC_HPP
#ifndef NO_EXEC
int execScript(std::string const& script, std::string const& ifname, std::string const& ifnode)
{
pid_t pid;
pid = fork();
if(!pid) {
int fd;
for (fd=getdtablesize();fd>=0;--fd) // close all file descriptors
close(fd);
fd = open("/dev/null",O_RDWR); // stdin
if(fd == -1)
cLog.msg(Log::PRIO_WARNING) << "can't open stdin";
else {
if(dup(fd) == -1) // stdout
cLog.msg(Log::PRIO_WARNING) << "can't open stdout";
if(dup(fd) == -1) // stderr
cLog.msg(Log::PRIO_WARNING) << "can't open stderr";
}
execl("/bin/sh", "/bin/sh", script.c_str(), ifname.c_str(), ifnode.c_str(), (char*)NULL);
// if execl return, an error occurred
cLog.msg(Log::PRIO_ERROR) << "error on executing script: " << AnytunErrno(errno);
return -1;
}
int status = 0;
waitpid(pid, &status, 0);
if(WIFEXITED(status))
cLog.msg(Log::PRIO_NOTICE) << "script '" << script << "' returned " << WEXITSTATUS(status);
else if(WIFSIGNALED(status))
cLog.msg(Log::PRIO_NOTICE) << "script '" << script << "' terminated after signal " << WTERMSIG(status);
else
cLog.msg(Log::PRIO_ERROR) << "executing script: unkown error";
return status;
}
#endif
#endif
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