Merge sync of head

[pw-darwin.git] / chpass / util.c

diff --git a/chpass/util.c b/chpass/util.c
index 03c76778e30088599c0d4bcb848ed76894de10f8..baf160e8762e77564a13811a2361bb966ff87745 100644 (file)
--- a/chpass/util.c
+++ b/chpass/util.c
@@ -1,6 +1,13 @@
 /*-
  * Copyright (c) 1988, 1993, 1994
  *     The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2002 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * ThinkSec AS and NAI Labs, the Security Research Division of Network
+ * Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -32,33 +39,31 @@
  */
 
 #ifndef lint
+#if 0
 static char sccsid[] = "@(#)util.c     8.4 (Berkeley) 4/2/94";
+#endif
 #endif /* not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 #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[] =
+static const char *months[] =
        { "January", "February", "March", "April", "May", "June",
          "July", "August", "September", "October", "November",
          "December", NULL };
 
 char *
-ttoa(tval)
-       time_t tval;
+ttoa(time_t tval)
 {
        struct tm *tp;
        static char tbuf[50];
@@ -66,7 +71,7 @@ ttoa(tval)
        if (tval) {
                tp = localtime(&tval);
                (void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon],
-                   tp->tm_mday, tp->tm_year + TM_YEAR_BASE);
+                   tp->tm_mday, tp->tm_year + 1900);
        }
        else
                *tbuf = '\0';
@@ -74,12 +79,11 @@ ttoa(tval)
 }
 
 int
-atot(p, store)
-       char *p;
-       time_t *store;
+atot(char *p, time_t *store)
 {
        static struct tm *lt;
-       char *t, **mp;
+       char *t;
+       const char **mp;
        time_t tval;
        int day, month, year;
 
@@ -94,52 +98,85 @@ atot(p, store)
        }
        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 (isdigit(*t)) {
+               month = atoi(t);
+       } else {
+               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))
+       if (!(t = strtok(NULL, " \t,")) || !isdigit(*t))
                goto bad;
        day = atoi(t);
-       if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
+       if (!(t = strtok(NULL, " \t,")) || !isdigit(*t))
                goto bad;
        year = atoi(t);
-       if (day < 1 || day > 31 || month < 1 || month > 12 || !year)
+       if (day < 1 || day > 31 || month < 1 || month > 12)
                goto bad;
-       if (year < 100)
-               year += TM_YEAR_BASE;
-       if (year <= EPOCH_YEAR)
+       /* Allow two digit years 1969-2068 */
+       if (year < 69)
+               year += 2000;
+       else if (year < 100)
+               year += 1900;
+       if (year < 1969)
 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;
+       lt->tm_year = year - 1900;
+       lt->tm_mon = month - 1;
+       lt->tm_mday = day;
+       lt->tm_hour = 0;
+       lt->tm_min = 0;
+       lt->tm_sec = 0;
+       lt->tm_isdst = -1;
+       if ((tval = mktime(lt)) < 0)
+               return (1);
        *store = tval;
        return (0);
 }
 
-char *
-ok_shell(name)
-       char *name;
+int
+ok_shell(char *name)
 {
        char *p, *sh;
 
        setusershell();
-       while (sh = getusershell()) {
-               if (!strcmp(name, sh))
-                       return (name);
+       while ((sh = getusershell())) {
+               if (!strcmp(name, sh)) {
+                       endusershell();
+                       return (1);
+               }
                /* allow just shell name, but use "real" path */
-               if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
-                       return (sh);
+               if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) {
+                       endusershell();
+                       return (1);
+               }
+       }
+       endusershell();
+       return (0);
+}
+
+char *
+dup_shell(char *name)
+{
+       char *p, *sh, *ret;
+
+       setusershell();
+       while ((sh = getusershell())) {
+               if (!strcmp(name, sh)) {
+                       endusershell();
+                       return (strdup(name));
+               }
+               /* allow just shell name, but use "real" path */
+               if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) {
+                       ret = strdup(sh);
+                       endusershell();
+                       return (ret);
+               }
        }
+       endusershell();
        return (NULL);
 }