diff options
Diffstat (limited to 'chpass/util.c')
| -rw-r--r-- | chpass/util.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/chpass/util.c b/chpass/util.c new file mode 100644 index 0000000..ec4cc1f --- /dev/null +++ b/chpass/util.c @@ -0,0 +1,145 @@ +/*- + * Copyright (c) 1988, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; +#endif /* not lint */ + +#include <sys/types.h> + +#include <ctype.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <tzfile.h> +#include <unistd.h> + +#include "chpass.h" +#include "pathnames.h" + +static int dmsize[] = + { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; +static char *months[] = + { "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", + "December", NULL }; + +char * +ttoa(tval) + time_t tval; +{ + struct tm *tp; + static char tbuf[50]; + + if (tval) { + tp = localtime(&tval); + (void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon], + tp->tm_mday, tp->tm_year + TM_YEAR_BASE); + } + else + *tbuf = '\0'; + return (tbuf); +} + +int +atot(p, store) + char *p; + time_t *store; +{ + static struct tm *lt; + char *t, **mp; + time_t tval; + int day, month, year; + + if (!*p) { + *store = 0; + return (0); + } + if (!lt) { + unsetenv("TZ"); + (void)time(&tval); + lt = localtime(&tval); + } + if (!(t = strtok(p, " \t"))) + goto bad; + for (mp = months;; ++mp) { + if (!*mp) + goto bad; + if (!strncasecmp(*mp, t, 3)) { + month = mp - months + 1; + break; + } + } + if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) + goto bad; + day = atoi(t); + if (!(t = strtok((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) ? + DAYSPERLYEAR : DAYSPERNYEAR; + while (--month) + tval += dmsize[month]; + tval += day; + tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN; + tval -= lt->tm_gmtoff; + *store = tval; + return (0); +} + +char * +ok_shell(name) + char *name; +{ + char *p, *sh; + + setusershell(); + while (sh = getusershell()) { + if (!strcmp(name, sh)) + return (name); + /* allow just shell name, but use "real" path */ + if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) + return (sh); + } + return (NULL); +} |