1/*
2 * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
3 * Use is subject to license terms.
4 */
5#pragma ident	"%Z%%M%	%I%	%E% SMI"
6
7 /*
8  * On socket-only systems, fromhost() is nothing but an alias for the
9  * socket-specific sock_host() function.
10  *
11  * On systems with sockets and TLI, fromhost() determines the type of API
12  * (sockets, TLI), then invokes the appropriate API-specific routines.
13  *
14  * Diagnostics are reported through syslog(3).
15  *
16  * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
17  */
18
19#ifndef lint
20static char sccsid[] = "@(#) fromhost.c 1.17 94/12/28 17:42:23";
21#endif
22
23#if defined(TLI) || defined(PTX) || defined(TLI_SEQUENT)
24
25/* System libraries. */
26
27#include <sys/types.h>
28#include <sys/tiuser.h>
29#include <stropts.h>
30
31/* Local stuff. */
32
33#include "tcpd.h"
34
35/* fromhost - find out what network API we should use */
36
37void    fromhost(request)
38struct request_info *request;
39{
40
41    /*
42     * On systems with streams support the IP network protocol family may be
43     * accessible via more than one programming interface: Berkeley sockets
44     * and the Transport Level Interface (TLI).
45     *
46     * Thus, we must first find out what programming interface to use: sockets
47     * or TLI. On some systems, sockets are not part of the streams system,
48     * so if request->fd is not a stream we simply assume sockets.
49     */
50
51    if (ioctl(request->fd, I_FIND, "timod") > 0) {
52	tli_host(request);
53    } else {
54	sock_host(request);
55    }
56}
57
58#endif /* TLI || PTX || TLI_SEQUENT */
59