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/*
* This file is derived from Bnews' fullname.c file.
* Bnews is Copyright (c) 1986 by Rick Adams.
*
* NOTICE: THIS CODE HAS BEEN MODIFIED TO FIT THE NN ENVIRONMENT:
*
* The full_name function has been rewritten entirely, although
* there are still some structural resemblence.
* Fullname checks $NAME before looking at /etc/passwd.
* The LOCALNAME alternative has been removed, because it would fit
* nn very poorly.
* The buildfname function is made static and moved before full_name.
*
* fullname.c - this file is made separate so that different local
* conventions can be applied. The stock version understands two
* conventions:
*
* (a) Berkeley finger: the gecos field in /etc/passwd begins with
* the full name, terminated with comma, semicolon, or end of
* field. & expands to the login name.
* (b) BTL RJE: the gecos field looks like
* : junk - full name ( junk :
* where the "junk -" is optional.
*
* If you have a different local convention, modify this file accordingly.
*/
#ifdef SCCSID
static char *SccsId = "@(#)fullname.c 1.13 11/4/87";
#endif /* SCCSID */
#include <stdlib.h>
#include <pwd.h>
#include <string.h>
#include <ctype.h>
#include "config.h"
#include "global.h"
/* fullname.c */
static void buildfname(register char *p, char *login, char *buf);
/*
** BUILDFNAME -- build full name from gecos style entry.
** (routine lifted from sendmail)
**
** This routine interprets the strange entry that would appear
** in the GECOS field of the password file.
**
** Parameters:
** p -- name to build.
** login -- the login name of this user (for &).
** buf -- place to put the result.
**
** Returns:
** none.
**
** Side Effects:
** none.
*/
static void
buildfname(register char *p, char *login, char *buf)
{
register char *bp = buf;
if (*p == '*')
p++;
while (*p != '\0' && *p != ',' && *p != ';' && *p != ':' && *p != '(') {
if (*p == '-' && (isdigit(p[-1]) || isspace(p[-1]))) {
bp = buf;
p++;
} else if (*p == '&') {
strcpy(bp, login);
if ((bp == buf || !isalpha(bp[-1])) && islower(*bp))
*bp = toupper(*bp);
while (*bp != '\0')
bp++;
p++;
} else
*bp++ = *p++;
}
*bp = '\0';
}
/*
* Figure out who is sending the message and sign it.
* We attempt to look up the user in the gecos field of /etc/passwd.
*/
char *
full_name(void)
{
static char *fullname = NULL;
char inbuf[FILENAME];
struct passwd *pw;
if (fullname == NULL) {
if ((fullname = getenv("NAME")) != NULL)
return fullname;
pw = getpwuid(user_id);
if (pw == NULL)
return fullname = "?";
buildfname(pw->pw_gecos, pw->pw_name, inbuf);
if (inbuf[0] == 0)
strcpy(inbuf, pw->pw_name);
fullname = copy_str(inbuf);
}
return fullname;
}
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