tcpd.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* General front end for stream and datagram IP services. This program logs
* the remote host name and then invokes the real daemon. For example,
* after saving the real daemons in the directory specified with the
* REAL_DAEMON_DIR macro. This arrangement requires that the network daemons
* are started by inetd or something similar. Connections and diagnostics
* are logged through syslog(3).
*
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
*/
#ifndef lint
#endif
/* System libraries. */
#include <stdio.h>
#include <syslog.h>
#include <string.h>
#ifndef MAXPATHNAMELEN
#define MAXPATHNAMELEN BUFSIZ
#endif
#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#endif
/* Local stuff. */
#include "patchlevel.h"
#include "tcpd.h"
int argc;
char **argv;
{
struct request_info request;
char path[MAXPATHNAMELEN];
/* Attempt to prevent the creation of world-writable files. */
#ifdef DAEMON_UMASK
#endif
/*
* If argv[0] is an absolute path name, ignore REAL_DAEMON_DIR, and strip
* argv[0] to its basename.
*/
if (argv[0][0] == '/') {
} else {
}
/*
* Open a channel to the syslog daemon. Older versions of openlog()
* require only two arguments.
*/
#ifdef LOG_MAIL
#else
#endif
/*
* Find out the endpoint addresses of this conversation. Host name
* lookups and double checks will be done on demand.
*/
/*
* Optionally look up and double check the remote host name. Sites
* concerned with security may choose to refuse connections from hosts
* that pretend to have someone elses host name.
*/
#ifdef PARANOID
#endif
/*
* The BSD rlogin and rsh daemons that came out after 4.3 BSD disallow
* socket options at the IP level. They do so for a good reason.
* Unfortunately, we cannot use this with SunOS 4.1.x because the
* getsockopt() system call can panic the system.
*/
#ifdef KILL_IP_OPTIONS
#endif
/*
* Check whether this host can access the service in argv[0]. The
* access-control code invokes optional shell commands as specified in
* the access-control tables.
*/
#ifdef HOSTS_ACCESS
if (!hosts_access(&request))
#endif
/* Report request and invoke the real daemon program. */
closelog();
/* NOTREACHED */
}