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Annotation of 43BSDReno/usr.bin/chpass/util.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1988 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted provided
        !             6:  * that: (1) source distributions retain this entire copyright notice and
        !             7:  * comment, and (2) distributions including binaries display the following
        !             8:  * acknowledgement:  ``This product includes software developed by the
        !             9:  * University of California, Berkeley and its contributors'' in the
        !            10:  * documentation or other materials provided with the distribution and in
        !            11:  * all advertising materials mentioning features or use of this software.
        !            12:  * Neither the name of the University nor the names of its contributors may
        !            13:  * be used to endorse or promote products derived from this software without
        !            14:  * specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)util.c     5.13 (Berkeley) 6/29/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #include <sys/types.h>
        !            25: #include <sys/time.h>
        !            26: #include <tzfile.h>
        !            27: #include <pwd.h>
        !            28: #include <stdio.h>
        !            29: #include <string.h>
        !            30: #include <ctype.h>
        !            31: #include "chpass.h"
        !            32: #include "pathnames.h"
        !            33: 
        !            34: static int dmsize[] =
        !            35:        { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
        !            36: static char *months[] =
        !            37:        { "January", "February", "March", "April", "May", "June",
        !            38:          "July", "August", "September", "October", "November",
        !            39:          "December", NULL };
        !            40: char *
        !            41: ttoa(tval)
        !            42:        time_t tval;
        !            43: {
        !            44:        struct tm *tp;
        !            45:        static char tbuf[50];
        !            46: 
        !            47:        if (tval) {
        !            48:                tp = localtime(&tval);
        !            49:                (void)sprintf(tbuf, "%s %d, 19%d", months[tp->tm_mon],
        !            50:                    tp->tm_mday, tp->tm_year);
        !            51:        }
        !            52:        else
        !            53:                *tbuf = '\0';
        !            54:        return(tbuf);
        !            55: } 
        !            56: 
        !            57: atot(p, store)
        !            58:        char *p;
        !            59:        time_t *store;
        !            60: {
        !            61:        register char *t, **mp;
        !            62:        static struct tm *lt;
        !            63:        time_t tval, time();
        !            64:        int day, month, year;
        !            65: 
        !            66:        if (!*p) {
        !            67:                *store = 0;
        !            68:                return(0);
        !            69:        }
        !            70:        if (!lt) {
        !            71:                unsetenv("TZ");
        !            72:                (void)time(&tval);
        !            73:                lt = localtime(&tval);
        !            74:        }
        !            75:        if (!(t = strtok(p, " \t")))
        !            76:                goto bad;
        !            77:        for (mp = months;; ++mp) {
        !            78:                if (!*mp)
        !            79:                        goto bad;
        !            80:                if (!strncasecmp(*mp, t, 3)) {
        !            81:                        month = mp - months + 1;
        !            82:                        break;
        !            83:                }
        !            84:        }
        !            85:        if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
        !            86:                goto bad;
        !            87:        day = atoi(t);
        !            88:        if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
        !            89:                goto bad;
        !            90:        year = atoi(t);
        !            91:        if (day < 1 || day > 31 || month < 1 || month > 12 || !year)
        !            92:                goto bad;
        !            93:        if (year < 100)
        !            94:                year += TM_YEAR_BASE;
        !            95:        if (year <= EPOCH_YEAR)
        !            96: bad:           return(1);
        !            97:        tval = isleap(year) && month > 2;
        !            98:        for (--year; year >= EPOCH_YEAR; --year)
        !            99:                tval += isleap(year) ?
        !           100:                    DAYSPERLYEAR : DAYSPERNYEAR;
        !           101:        while (--month)
        !           102:                tval += dmsize[month];
        !           103:        tval += day;
        !           104:        tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN;
        !           105:        tval -= lt->tm_gmtoff;
        !           106:        *store = tval;
        !           107:        return(0);
        !           108: }
        !           109: 
        !           110: /*
        !           111:  * print --
        !           112:  *     print out the file for the user to edit; strange side-effect:
        !           113:  *     return if the user is allowed to modify their shell.
        !           114:  */
        !           115: print(fp, pw)
        !           116:        FILE *fp;
        !           117:        struct passwd *pw;
        !           118: {
        !           119:        register char *p;
        !           120:        int shellval;
        !           121:        char *bp;
        !           122:        char *getusershell(), *ok_shell(), *ttoa();
        !           123: 
        !           124:        shellval = 1;
        !           125:        (void)fprintf(fp, "#Changing user database information for %s.\n",
        !           126:            pw->pw_name);
        !           127:        if (!uid) {
        !           128:                (void)fprintf(fp, "Login: %s\n", pw->pw_name);
        !           129:                (void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
        !           130:                (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
        !           131:                (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
        !           132:                (void)fprintf(fp, "Change [month day year]: %s\n",
        !           133:                    ttoa(pw->pw_change));
        !           134:                (void)fprintf(fp, "Expire [month day year]: %s\n",
        !           135:                    ttoa(pw->pw_expire));
        !           136:                (void)fprintf(fp, "Class: %s\n", pw->pw_class);
        !           137:                (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
        !           138:                (void)fprintf(fp, "Shell: %s\n",
        !           139:                    *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
        !           140:        }
        !           141:        /* only admin can change "restricted" shells */
        !           142:        else if (ok_shell(pw->pw_shell))
        !           143:                (void)fprintf(fp, "Shell: %s\n",
        !           144:                    *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
        !           145:        else
        !           146:                shellval = 0;
        !           147:        bp = pw->pw_gecos;
        !           148:        p = strsep(&bp, ",");
        !           149:        (void)fprintf(fp, "Full Name: %s\n", p ? p : "");
        !           150:        p = strsep(&bp, ",");
        !           151:        (void)fprintf(fp, "Location: %s\n", p ? p : "");
        !           152:        p = strsep(&bp, ",");
        !           153:        (void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
        !           154:        p = strsep(&bp, ",");
        !           155:        (void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
        !           156:        return(shellval);
        !           157: }
        !           158: 
        !           159: char *
        !           160: ok_shell(name)
        !           161:        register char *name;
        !           162: {
        !           163:        register char *p, *sh;
        !           164:        char *getusershell();
        !           165: 
        !           166:        setusershell();
        !           167:        while (sh = getusershell()) {
        !           168:                if (!strcmp(name, sh))
        !           169:                        return(name);
        !           170:                /* allow just shell name, but use "real" path */
        !           171:                if ((p = rindex(sh, '/')) && !strcmp(name, p + 1))
        !           172:                        return(sh);
        !           173:        }
        !           174:        return(NULL);
        !           175: }

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