NetBSD/usr.sbin/sup/source/supcname.c

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/* $NetBSD: supcname.c,v 1.4 1997/06/17 18:56:52 christos Exp $ */
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/*
* Copyright (c) 1992 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software_Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* sup client name server interface
**********************************************************************
* HISTORY
* Revision 1.4 92/08/11 12:07:32 mrt
* Added copyright.
* [92/08/10 mrt]
*
* 21-Dec-87 Glenn Marcy (gm0w) at Carnegie-Mellon University
* Changed to no longer use a name server.
*
* 26-May-87 Doug Philips (dwp) at Carnegie-Mellon University
* Changed getnams and added several new routines to change the
* way that sup finds nameservers. It now builds a tree of
* servers to check. It walks over the tree. At each node, it
* tries to contact the name server and get as many names
* resolved as it can. It stops after either all collections
* have host names, or if some collections don't have host names
* but either everyone doesn't know what they are, or after too
* many tries, none could be reached.
*
* 25-May-87 Doug Philips (dwp) at Carnegie-Mellon University
* Split off from sup.c
*
**********************************************************************
*/
#include "supcdefs.h"
#include "supextern.h"
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extern COLLECTION *firstC; /* collection list pointer */
/*****************************************
*** G E T H O S T N A M E S ***
*****************************************/
/*
* For each collection that doesn't have a host name specified, read
* the file server list for the name of the host for that collection.
* It's a fatal error if a collection has no file server.
*/
void getnams ()
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{
register COLLECTION *c;
char buf[STRINGLENGTH];
register FILE *f;
char *p,*q;
for (c = firstC; c && c->Chtree != NULL; c = c->Cnext);
if (c == NULL) return;
(void) sprintf (buf,FILEHOSTS,DEFDIR);
f = fopen (buf,"r");
if (f == NULL) logquit (1,"Can't open %s",buf);
while ((p = fgets (buf,STRINGLENGTH,f)) != NULL) {
if ((q = index (p,'\n')) != NULL)
*q = '\0';
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if (index ("#;:",*p)) continue;
q = nxtarg (&p,"= \t");
p = skipover (p," \t");
if (*p == '=') p++;
p = skipover (p," \t");
if (*p == '\0') goaway ("error in collection/host file");
do {
if (strcmp (c->Cname, q) == 0) {
do {
q = nxtarg (&p,", \t");
p = skipover (p," \t");
if (*p == ',') p++;
p = skipover (p," \t");
(void) Tinsert (&c->Chtree,q,FALSE);
} while (*p != '\0');
}
while ((c = c->Cnext) != NULL && c->Chtree != NULL);
} while (c != NULL);
for (c = firstC; c && c->Chtree != NULL; c = c->Cnext);
if (c == NULL) break;
}
(void) fclose (f);
if (c == NULL) return;
do {
logerr ("Host for collection %s not found",c->Cname);
while ((c = c->Cnext) != NULL && c->Chtree != NULL);
} while (c);
logquit (1,"Hosts not found for all collections");
}