4 * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
5 * featured implementation uAnytun has no support for multiple connections
6 * or synchronisation. It is a small single threaded implementation intended
7 * to act as a client on small platforms.
8 * The secure anycast tunneling protocol (satp) defines a protocol used
9 * for communication between any combination of unicast and anycast
10 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
11 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
12 * ethernet, ip, arp ...). satp directly includes cryptography and
13 * message authentication based on the methodes used by SRTP. It is
14 * intended to deliver a generic, scaleable and secure solution for
15 * tunneling and relaying of packets of any protocol.
18 * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
20 * This file is part of uAnytun.
22 * uAnytun is free software: you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License version 3 as
24 * published by the Free Software Foundation.
26 * uAnytun is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
31 * You should have received a copy of the GNU General Public License
32 * along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
38 int exec_script(const char* script, const char* ifname)
40 if(!script || !ifname)
47 for (fd=getdtablesize();fd>=0;--fd) // close all file descriptors
50 fd = open("/dev/null",O_RDWR); // stdin
52 log_printf(WARNING, "can't open stdin");
54 if(dup(fd) == -1) // stdout
55 log_printf(WARNING, "can't open stdout");
56 if(dup(fd) == -1) // stderr
57 log_printf(WARNING, "can't open stderr");
59 execl("/bin/sh", "/bin/sh", script, ifname, NULL);
60 // if execl return, an error occurred
61 log_printf(ERROR, "error on executing script: %s", strerror(errno));
65 waitpid(pid, &status, 0);
67 log_printf(NOTICE, "script '%s' returned %d", script, WEXITSTATUS(status));
68 else if(WIFSIGNALED(status))
69 log_printf(NOTICE, "script '%s' terminated after signal %d", script, WTERMSIG(status));
71 log_printf(ERROR, "executing script: unkown error");