os_dnf.c
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- /*
- * Program: Operating-system dependent routines -- MS-DOS (PC-NFS) 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: 11 April 1989
- * Last Edited: 10 June 1999
- *
- * Copyright 1999 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.
- *
- */
- /* Private function prototypes */
- #include "tcp_dos.h" /* must be before osdep includes tcp.h */
- #include "mail.h"
- #include "osdep.h"
- #include <time.h>
- #include <errno.h>
- #include <fcntl.h>
- #include <sysstat.h>
- #include <systimeb.h>
- #include <sysnfs_time.h>
- #include <systk_types.h>
- #include <syssocket.h>
- #include <netinetin.h>
- #include <tk_errno.h>
- #include <sysuio.h>
- #include <netdb.h>
- #include "misc.h"
- #include "fs_dos.c"
- #include "ftl_dos.c"
- #include "nl_dos.c"
- #include "env_dos.c"
- #undef write
- #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];
- unsigned long myip;
- /* see if known host name */
- if (!gethostname (tmp,MAILTMPLEN-1)) s = tmp;
- /* no, try host address */
- else if (get_myipaddr ((char *) &myip))
- sprintf (s = tmp,"[%s]",inet_ntoa (myip));
- else s = "random-pc"; /* say what? */
- 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;
- }