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