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os_os2.c
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C/C++ Source or Header
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1998-09-16
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3KB
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99 lines
/*
* Program: Operating-system dependent routines -- OS/2 emx version
*
* Author: Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 14 March 1996
* Last Edited: 14 March 1996
*
* Copyright 1996 by the University of Washington
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appears in all copies and that both the
* above copyright notice and this permission notice appear in supporting
* documentation, and that the name of the University of Washington not be
* used in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. This software is made available
* "as is", and
* THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
* WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
* NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
* (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <ctype.h>
#include <errno.h>
extern int errno; /* just in case */
#include "tcp_dos.h" /* must be before osdep includes tcp.h */
#include "mail.h"
#include "osdep.h"
#include "misc.h"
#include "fs_os2.c"
#include "ftl_os2.c"
#include "nl_dos.c"
#include "env_os2.c"
#include "tcp_dos.c"
/* Return my local host name
* Returns: my local host name
*/
char *mylocalhost (void)
{
if (!myLocalHost) { /* known yet? */
char *s,tmp[MAILTMPLEN];
struct hostent *he;
/* could we get local id? */
gethostname (tmp,MAILTMPLEN-1);
if (he = gethostbyname (lcase (tmp))) {
if (he->h_name) s = he->h_name;
else sprintf (s = tmp,"[%i.%i.%i.%i]",he->h_addr[0],he->h_addr[1],
he->h_addr[2],he->h_addr[3]);
}
else s = "random-pc";
myLocalHost = cpystr (s); /* record for subsequent use */
}
return myLocalHost;
}
/* Look up host address
* Accepts: pointer to pointer to host name
* socket address block
* Returns: non-zero with host address in socket, official host name in host;
* else NIL
*/
long lookuphost (char **host,struct sockaddr_in *sin)
{
long ret = -1;
char tmp[MAILTMPLEN];
struct hostent *hn = gethostbyname (lcase (strcpy (tmp,*host)));
if (!hn) return NIL; /* got a host name? */
*host = cpystr (hn->h_name); /* set official name */
/* copy host addresses */
memcpy (&sin->sin_addr,hn->h_addr,hn->h_length);
return T;
}