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/*
* CaSU - communications & status utilities.
* Copyright (C) 1992, 1993, 1994 Luke Mewburn <lm@rmit.edu.au>
* incorporating:
* flon - lists your friends who are logged on.
* to - send a short message to a friend
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "casu.h"
/*
* errmesg
* print a message to stderr, in a consistant format.
* output is of the form:
* progname: 'm2' - m1.\n # m2 is ! NULL
* progname: m1.\n # m2 is NULL
*/
void
errmesg(m1, m2)
char *m1, *m2;
{
fprintf(stderr, "%s: ", progname);
if (m2)
fprintf(stderr, "'%s' - ", m2);
fprintf(stderr, "%s.\n", m1);
} /* errmesg */
/*
* errexit
*
* use errmesg to print a message and exit the program.
*/
void
errexit(m1, m2)
char *m1, *m2;
{
errmesg(m1, m2);
exit(1);
} /* errexit */
/*
* strnc0py
*
* as strncpy, but always put in the \0 (assume array is siz+1 long)
*/
char *
strnc0py(s1, s2, n)
char *s1, *s2;
size_t n;
{
s1[n] = '\0';
return strncpy(s1, s2, n);
} /* strnc0py */
/*
* get_username
*
* find out the username of the user...
*/
char *
get_username()
{
struct passwd *pwbufr;
char *myname;
int my_uid;
static char namebuf[UT_NAMESIZE+1];
myname=getlogin();
if (myname == NULL) /* attempt to get name another way */
{
my_uid = (int) getuid();
if (pw_list != NULL)
{
int lp;
for (lp = 0; lp < pw_count; lp++)
if (pw_list[lp].uid == my_uid)
break;
if (lp != pw_count)
myname = pw_list[lp].username;
}
else /* don't use inbuilt passwd file - USE_GETPWENT does this too */
{
if ((pwbufr = getpwuid(my_uid)) != NULL)
myname = pwbufr->pw_name;
}
}
if (myname == NULL)
myname = "";
strnc0py(namebuf, myname, UT_NAMESIZE);
return (namebuf);
} /* get_username */
/*
* convert_realname
*
* converts the GCOS field at tfb to a full name, replacing
* occurances of `&' with name. If uid matches the last request,
* it will return the last converted entry (cache!). It returns
* a pointer to an internal static buffer
*/
char *
convert_realname(tfb, name, uid)
char *tfb, *name;
int uid;
{
static char realnam[BUFSIZ + 1];
static int last_uid = -1;
char *namep, *final;
int len, namelen;
if (last_uid == uid)
return realnam;
final = strchr(tfb, ',');
if (final != NULL)
*final = '\0';
if (strchr(tfb, '&') == NULL)
return tfb;
final = tfb;
namelen = strlen(name) - 1;
for (namep=tfb, len=1; *namep && len < BUFSIZ ; namep++, len++)
{
if (*namep=='&')
{
if (len + namelen >= BUFSIZ)
break; /* safety net for copy below */
len += namelen;
}
}
final = namep;
for (namep=tfb, len=0; namep < final ; namep++, len++)
{
if (*namep=='&')
{
strcpy(&realnam[len], name);
if (islower(realnam[len]))
realnam[len] = toupper(realnam[len]);
len += namelen;
}
else
realnam[len] = *namep;
}
realnam[len]='\0';
last_uid = uid;
return realnam;
} /* convert_realname */
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