date and time created 89/02/22 17:23:49 by bostic

[unix-history] / usr / src / usr.bin / chpass / util.c

/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)util.c      5.1 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/time.h>
#include <tzfile.h>
#include </usr/src/include/pwd.h>
#include <stdio.h>
#include <chpass.h>
#include <strings.h>
#include <ctype.h>

static int dmsize[] =
       { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static char *months[] =
       { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
         "Sep", "Oct", "Nov", "Dec", NULL };
char *
ttoa(tval)
       time_t tval;
{
       struct tm *tp;
       static char tbuf[10];

       if (!tval)
               bcopy("None", tbuf, 6);
       else {
               tp = localtime(&tval);
               (void)sprintf(tbuf, "%02d %s 19%02d", tp->tm_mday,
                   months[tp->tm_mon], tp->tm_year);
       }
       return(tbuf);
} 

atot(p, store)
       char *p;
       time_t *store;
{
       register char *t, **mp;
       static struct tm *lt;
       time_t tval, time();
       int day, month, year;

       if (!strncasecmp(p, "none", 4)) {
               *store = 0;
               return(0);
       }
       if (!lt) {
               unsetenv("TZ");
               (void)time(&tval);
               lt = localtime(&tval);
       }
       if (!(t = strsep(p, " \t")) || !isdigit(*t))
               goto bad;
       day = atoi(t);
       if (!(t = strsep((char *)NULL, " \t")))
               goto bad;
       for (mp = months;; ++mp) {
               if (!*mp)
                       goto bad;
               if (!strncasecmp(*mp, t, 3)) {
                       month = mp - months + 1;
                       break;
               }
       }
       if (!(t = strsep((char *)NULL, " \t")) || !isdigit(*t))
               goto bad;
       year = atoi(t);
       if (day < 1 || day > 31 || month < 1 || month > 12 || !year)
               goto bad;
       if (year < 100)
               year += TM_YEAR_BASE;
       if (year <= EPOCH_YEAR)
bad:            return(1);
       tval = isleap(year) && month > 2;
       for (--year; year >= EPOCH_YEAR; --year)
               tval += isleap(year) ?
                   DAYS_PER_LYEAR : DAYS_PER_NYEAR;
       while (--month)
               tval += dmsize[month];
       tval += day - 1;
       tval = tval * HOURS_PER_DAY * MINS_PER_HOUR * SECS_PER_MIN;
       tval -= lt->tm_gmtoff;
       *store = tval;
       return(0);
}

print(fp, pw)
       FILE *fp;
       struct passwd *pw;
{
       register char *p;
       char *getusershell(), *ttoa();

       fprintf(fp, "Changing user database information for %s.\n",
           pw->pw_name);
       if (!uid) {
               fprintf(fp, "Login: %s\n", pw->pw_name);
               fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
               fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
               fprintf(fp, "Change [dd month yy]: %s\n", ttoa(pw->pw_change));
               fprintf(fp, "Expire [dd month yy]: %s\n", ttoa(pw->pw_expire));
               fprintf(fp, "Class: %s\n", pw->pw_class);
               fprintf(fp, "Home directory: %s\n", pw->pw_dir);
               fprintf(fp, "Shell: %s\n",
                   *pw->pw_shell ? pw->pw_shell : "/bin/sh");
       }
       else {
               /* only admin can change "restricted" shells */
               setusershell();
               for (;;)
                       if (!(p = getusershell()))
                               break;
                       else if (!strcmp(pw->pw_shell, p)) {
                               fprintf(fp, "Shell: %s\n",
                                   *pw->pw_shell ? pw->pw_shell : "/bin/sh");
                               break;
                       }
       }
       p = strsep(pw->pw_gecos, ",");
       fprintf(fp, "Full Name: %s\n", p ? p : "");
       p = strsep((char *)NULL, ",");
       fprintf(fp, "Location: %s\n", p ? p : "");
       p = strsep((char *)NULL, ",");
       fprintf(fp, "Home Phone: %s\n", p ? p : "");
       p = strsep((char *)NULL, ",");
       fprintf(fp, "Office Phone: %s\n", p ? p : "");
}