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 20 static 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 37 void fromhost(request) 38 struct 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