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/*
* tclUnixSock.c --
*
* This file contains Unix-specific socket related code.
*
* Copyright (c) 1995 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) tclUnixSock.c 1.6 96/08/08 08:48:51
*/
static const char *RCSID = "@(#) $Header: /cvsroot/aolserver/aolserver/tcl7.6/unix/Attic/tclUnixSock.c,v 1.2 2000/05/02 14:39:31 kriston Exp $, compiled: " __DATE__ " " __TIME__;
#include "tcl.h"
#include "tclPort.h"
/*
* The following variable holds the network name of this host.
*/
#ifndef SYS_NMLN
# define SYS_NMLN 100
#endif
static char hostname[SYS_NMLN + 1];
static int hostnameInited = 0;
static void GetHostname(char *);
/*
*----------------------------------------------------------------------
*
* Tcl_GetHostName --
*
* Get the network name for this machine, in a system dependent way.
*
* Results:
* A string containing the network name for this machine, or
* an empty string if we can't figure out the name.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
Tcl_GetHostName()
{
if (!hostnameInited) {
Ns_MasterLock();
if (!hostnameInited) {
GetHostname(hostname);
hostnameInited = 1;
}
Ns_MasterUnlock();
}
return hostname;
}
static void
GetHostname(char *hostname)
{
#ifndef NO_UNAME
struct utsname u;
struct hostent *hp;
if (uname(&u) > -1) {
hp = gethostbyname(u.nodename);
if (hp != NULL) {
strcpy(hostname, hp->h_name);
} else {
strcpy(hostname, u.nodename);
}
return;
}
#else
/*
* Uname doesn't exist; try gethostname instead.
*/
if (gethostname(hostname, sizeof(hostname)) > -1) {
return;
}
#endif
hostname[0] = 0;
}
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