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/* Srmsrvr.c: this file contains Socket library support
* Authors: Charles E. Campbell, Jr.
* Terry McRoberts
* Copyright: Copyright (C) 1999-2005 Charles E. Campbell, Jr. {{{1
* Permission is hereby granted to use and distribute this code,
* with or without modifications, provided that this copyright
* notice is copied with it. Like anything else that's free,
* Srmsrvr.c is provided *as is* and comes with no warranty
* of any kind, either expressed or implied. By using this
* software, you agree that in no event will the copyright
* holder be liable for any damages resulting from the use
* of this software.
* Date: Aug 22, 2005
*/
#include <stdio.h>
#include <unistd.h>
#include "xtdio.h"
#include "sockets.h"
/* -------------------------------------------------------------------------
* Local Definitions:
*/
#define BUFSIZE 128
#define TIMEOUT 20L
/* ------------------------------------------------------------------------- */
/* Srmsrvr: this function removes a server from the PortMaster's table
* It only needs a server name.
*
* Returns: PM_OK if it worked
* PM_SORRY otherwise
*/
#ifdef __PROTOTYPE__
SKTEVENT Srmsrvr(char *skthost)
#else
SKTEVENT Srmsrvr(skthost)
char *skthost;
#endif
{
char *at = NULL;
char *hostname = NULL;
int trycnt;
Socket *pmskt = NULL;
static char localhost[BUFSIZE] = "";
SKTEVENT mesg;
/* parse skthost into sktname and hostname strings */
at= strchr(skthost,'@');
if(!at) { /* fill in missing hostname with current host */
char *pmshare= NULL;
/* if sharing a PortMaster and no host was specified, use the PMSHARE-specified
* host (if PMSHARE exists), otherwise use localhost
*/
pmshare= getenv("PMSHARE");
if(pmshare) hostname= pmshare;
else {
if(!localhost[0]) gethostname(localhost,BUFSIZE);
hostname= localhost;
}
pmskt= Sopen_clientport(hostname,"SktRmSrvr",PORTMASTER);
}
else { /* use hostname specified in skthost */
skthost[(int) (at - skthost)]= '\0';
hostname= skthost + ((int) (at - skthost)) + 1;
pmskt = Sopen_clientport(hostname,"SktRmSrvr",PORTMASTER);
}
/* --- PortMaster Interface --- */
if(!pmskt) {
if(at) skthost[(int) (at - skthost)]= '@';
return PM_SORRY;
}
trycnt= 0;
do {
mesg= htons(PM_RMSERVER);
Swrite(pmskt,(char *) &mesg,sizeof(mesg));
/* don't wait forever... */
if(Stimeoutwait(pmskt,TIMEOUT,0L) < 0) {
shutdown(pmskt->skt,2);
close(pmskt->skt);
freeSocket(pmskt);
return PM_SORRY;
}
/* read PortMaster's response */
if(Sreadbytes(pmskt,(char *) &mesg,sizeof(mesg)) <= 0) {
if(at) skthost[(int) (at - skthost)]= '@';
shutdown(pmskt->skt,2);
close(pmskt->skt);
return PM_SORRY;
}
mesg= ntohs(mesg);
/* only allow PM_MAXTRY attempts to communicate with the PortMaster */
if(++trycnt >= PM_MAXTRY) {
if(at) skthost[(int) (at - skthost)]= '@';
shutdown(pmskt->skt,2);
close(pmskt->skt);
return PM_SORRY;
}
} while(mesg != PM_OK);
Sputs(skthost,pmskt);
/* read PortMaster's response (should be PM_OK) */
Sreadbytes(pmskt,(char *) &mesg,sizeof(mesg));
shutdown(pmskt->skt,2);
close(pmskt->skt);
mesg= ntohs(mesg);
/* restore skthost string */
if(at) skthost[(int) (at - skthost)]= '@';
return mesg;
}
/* ---------------------------------------------------------------------
* vim: ts=4
*/
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