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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZGetSender.c function.
*
* Created by: Robert French
*
* $Source$
* $Author$
*
* Copyright (c) 1987 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
/* $Header$ */
#ifndef lint
static char rcsid_ZGetSender_c[] = "$Header$";
#endif lint
#include <zephyr/mit-copyright.h>
#include <zephyr/zephyr_internal.h>
#include <pwd.h>
uid_t getuid();
char *ZGetSender()
{
char *tktfile;
static char sender[128] = "";
char pname[ANAME_SZ],pinst[INST_SZ];
FILE *fp;
struct passwd *pw;
if (*sender)
return (sender);
tktfile = (char *)TKT_FILE;
if (!(fp = fopen(tktfile,"r"))) {
/* XXX a uid_t is a u_short (now), but getpwuid
wants an int. AARGH! */
pw = getpwuid((int) getuid());
if (!pw)
return ("unknown");
(void) sprintf(sender,"%s@%s",pw->pw_name,__Zephyr_realm);
return (sender);
}
readstr(fp,pname,ANAME_SZ);
readstr(fp,pinst,INST_SZ);
(void) sprintf(sender,"%s%s%s@%s",pname,(pinst[0]?".":""),pinst,
__Zephyr_realm);
return (sender);
}
static readstr(fp,s,n)
FILE *fp;
char *s;
int n;
{
int count;
count = n;
while (fread(s,1,1,fp) && --count)
if (!*(s++))
return;
*(s++) = '\0';
return;
}
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