upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

1 files changed, 616 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/srclib/apr-util/misc/apr_date.c b/rubbos/app/httpd-2.0.64/srclib/apr-util/misc/apr_date.c
new file mode 100644
index 00000000..f584e093
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/apr-util/misc/apr_date.c
@@ -0,0 +1,616 @@
+/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
+ * applicable.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * apr_date.c: date parsing utility routines
+ *     These routines are (hopefully) platform independent.
+ * 
+ * 27 Oct 1996  Roy Fielding
+ *     Extracted (with many modifications) from mod_proxy.c and
+ *     tested with over 50,000 randomly chosen valid date strings
+ *     and several hundred variations of invalid date strings.
+ * 
+ */
+
+#include "apr.h"
+#include "apr_lib.h"
+
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#if APR_HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+
+#include "apr_date.h"
+
+/*
+ * Compare a string to a mask
+ * Mask characters (arbitrary maximum is 256 characters, just in case):
+ *   @ - uppercase letter
+ *   $ - lowercase letter
+ *   & - hex digit
+ *   # - digit
+ *   ~ - digit or space
+ *   * - swallow remaining characters 
+ *  <x> - exact match for any other character
+ */
+APU_DECLARE(int) apr_date_checkmask(const char *data, const char *mask)
+{
+    int i;
+    char d;
+
+    for (i = 0; i < 256; i++) {
+        d = data[i];
+        switch (mask[i]) {
+        case '\0':
+            return (d == '\0');
+
+        case '*':
+            return 1;
+
+        case '@':
+            if (!apr_isupper(d))
+                return 0;
+            break;
+        case '$':
+            if (!apr_islower(d))
+                return 0;
+            break;
+        case '#':
+            if (!apr_isdigit(d))
+                return 0;
+            break;
+        case '&':
+            if (!apr_isxdigit(d))
+                return 0;
+            break;
+        case '~':
+            if ((d != ' ') && !apr_isdigit(d))
+                return 0;
+            break;
+        default:
+            if (mask[i] != d)
+                return 0;
+            break;
+        }
+    }
+    return 0;          /* We only get here if mask is corrupted (exceeds 256) */
+}
+
+/*
+ * Parses an HTTP date in one of three standard forms:
+ *
+ *     Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
+ *     Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
+ *     Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
+ *
+ * and returns the apr_time_t number of microseconds since 1 Jan 1970 GMT, 
+ * or APR_DATE_BAD if this would be out of range or if the date is invalid.
+ *
+ * The restricted HTTP syntax is
+ * 
+ *     HTTP-date    = rfc1123-date | rfc850-date | asctime-date
+ *
+ *     rfc1123-date = wkday "," SP date1 SP time SP "GMT"
+ *     rfc850-date  = weekday "," SP date2 SP time SP "GMT"
+ *     asctime-date = wkday SP date3 SP time SP 4DIGIT
+ *
+ *     date1        = 2DIGIT SP month SP 4DIGIT
+ *                    ; day month year (e.g., 02 Jun 1982)
+ *     date2        = 2DIGIT "-" month "-" 2DIGIT
+ *                    ; day-month-year (e.g., 02-Jun-82)
+ *     date3        = month SP ( 2DIGIT | ( SP 1DIGIT ))
+ *                    ; month day (e.g., Jun  2)
+ *
+ *     time         = 2DIGIT ":" 2DIGIT ":" 2DIGIT
+ *                    ; 00:00:00 - 23:59:59
+ *
+ *     wkday        = "Mon" | "Tue" | "Wed"
+ *                  | "Thu" | "Fri" | "Sat" | "Sun"
+ *
+ *     weekday      = "Monday" | "Tuesday" | "Wednesday"
+ *                  | "Thursday" | "Friday" | "Saturday" | "Sunday"
+ *
+ *     month        = "Jan" | "Feb" | "Mar" | "Apr"
+ *                  | "May" | "Jun" | "Jul" | "Aug"
+ *                  | "Sep" | "Oct" | "Nov" | "Dec"
+ *
+ * However, for the sake of robustness (and Netscapeness), we ignore the
+ * weekday and anything after the time field (including the timezone).
+ *
+ * This routine is intended to be very fast; 10x faster than using sscanf.
+ *
+ * Originally from Andrew Daviel <andrew@vancouver-webpages.com>, 29 Jul 96
+ * but many changes since then.
+ *
+ */
+APU_DECLARE(apr_time_t) apr_date_parse_http(const char *date)
+{
+    apr_time_exp_t ds;
+    apr_time_t result;
+    int mint, mon;
+    const char *monstr, *timstr;
+    static const int months[12] =
+    {
+    ('J' << 16) | ('a' << 8) | 'n', ('F' << 16) | ('e' << 8) | 'b',
+    ('M' << 16) | ('a' << 8) | 'r', ('A' << 16) | ('p' << 8) | 'r',
+    ('M' << 16) | ('a' << 8) | 'y', ('J' << 16) | ('u' << 8) | 'n',
+    ('J' << 16) | ('u' << 8) | 'l', ('A' << 16) | ('u' << 8) | 'g',
+    ('S' << 16) | ('e' << 8) | 'p', ('O' << 16) | ('c' << 8) | 't',
+    ('N' << 16) | ('o' << 8) | 'v', ('D' << 16) | ('e' << 8) | 'c'};
+
+    if (!date)
+        return APR_DATE_BAD;
+
+    while (*date && apr_isspace(*date))    /* Find first non-whitespace char */
+        ++date;
+
+    if (*date == '\0') 
+        return APR_DATE_BAD;
+
+    if ((date = strchr(date, ' ')) == NULL)       /* Find space after weekday */
+        return APR_DATE_BAD;
+
+    ++date;        /* Now pointing to first char after space, which should be */
+
+    /* start of the actual date information for all 4 formats. */
+
+    if (apr_date_checkmask(date, "## @$$ #### ##:##:## *")) {
+        /* RFC 1123 format with two days */
+        ds.tm_year = ((date[7] - '0') * 10 + (date[8] - '0') - 19) * 100;
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[9] - '0') * 10) + (date[10] - '0');
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 12;
+    }
+    else if (apr_date_checkmask(date, "##-@$$-## ##:##:## *")) { 
+        /* RFC 850 format */
+        ds.tm_year = ((date[7] - '0') * 10) + (date[8] - '0');
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 10;
+    }
+    else if (apr_date_checkmask(date, "@$$ ~# ##:##:## ####*")) {
+        /* asctime format */
+        ds.tm_year = ((date[16] - '0') * 10 + (date[17] - '0') - 19) * 100;
+        if (ds.tm_year < 0) 
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[18] - '0') * 10) + (date[19] - '0');
+
+        if (date[4] == ' ')
+            ds.tm_mday = 0;
+        else
+            ds.tm_mday = (date[4] - '0') * 10;
+
+        ds.tm_mday += (date[5] - '0');
+
+        monstr = date;
+        timstr = date + 7;
+    }
+    else if (apr_date_checkmask(date, "# @$$ #### ##:##:## *")) {
+        /* RFC 1123 format with one day */
+        ds.tm_year = ((date[6] - '0') * 10 + (date[7] - '0') - 19) * 100;
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[8] - '0') * 10) + (date[9] - '0');
+
+        ds.tm_mday = (date[0] - '0');
+
+        monstr = date + 2;
+        timstr = date + 11;
+    }
+    else
+        return APR_DATE_BAD;
+
+    if (ds.tm_mday <= 0 || ds.tm_mday > 31)
+        return APR_DATE_BAD;
+
+    ds.tm_hour = ((timstr[0] - '0') * 10) + (timstr[1] - '0');
+    ds.tm_min = ((timstr[3] - '0') * 10) + (timstr[4] - '0');
+    ds.tm_sec = ((timstr[6] - '0') * 10) + (timstr[7] - '0');
+
+    if ((ds.tm_hour > 23) || (ds.tm_min > 59) || (ds.tm_sec > 61)) 
+        return APR_DATE_BAD;
+
+    mint = (monstr[0] << 16) | (monstr[1] << 8) | monstr[2];
+    for (mon = 0; mon < 12; mon++)
+        if (mint == months[mon])
+            break;
+
+    if (mon == 12)
+        return APR_DATE_BAD;
+
+    if ((ds.tm_mday == 31) && (mon == 3 || mon == 5 || mon == 8 || mon == 10))
+        return APR_DATE_BAD;
+
+    /* February gets special check for leapyear */
+    if ((mon == 1) &&
+        ((ds.tm_mday > 29) || 
+        ((ds.tm_mday == 29)
+        && ((ds.tm_year & 3)
+        || (((ds.tm_year % 100) == 0)
+        && (((ds.tm_year % 400) != 100)))))))
+        return APR_DATE_BAD;
+
+    ds.tm_mon = mon;
+
+    /* ap_mplode_time uses tm_usec and tm_gmtoff fields, but they haven't 
+     * been set yet. 
+     * It should be safe to just zero out these values.
+     * tm_usec is the number of microseconds into the second.  HTTP only
+     * cares about second granularity.
+     * tm_gmtoff is the number of seconds off of GMT the time is.  By
+     * definition all times going through this function are in GMT, so this
+     * is zero. 
+     */
+    ds.tm_usec = 0;
+    ds.tm_gmtoff = 0;
+    if (apr_time_exp_get(&result, &ds) != APR_SUCCESS) 
+        return APR_DATE_BAD;
+    
+    return result;
+}
+
+/*
+ * Parses a string resembling an RFC 822 date.  This is meant to be
+ * leinent in its parsing of dates.  Hence, this will parse a wider 
+ * range of dates than apr_date_parse_http.
+ *
+ * The prominent mailer (or poster, if mailer is unknown) that has
+ * been seen in the wild is included for the unknown formats.
+ *
+ *     Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
+ *     Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
+ *     Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
+ *     Sun, 6 Nov 1994 08:49:37 GMT   ; RFC 822, updated by RFC 1123
+ *     Sun, 06 Nov 94 08:49:37 GMT    ; RFC 822
+ *     Sun, 6 Nov 94 08:49:37 GMT     ; RFC 822
+ *     Sun, 06 Nov 94 08:49 GMT       ; Unknown [drtr@ast.cam.ac.uk] 
+ *     Sun, 6 Nov 94 08:49 GMT        ; Unknown [drtr@ast.cam.ac.uk]
+ *     Sun, 06 Nov 94 8:49:37 GMT     ; Unknown [Elm 70.85]
+ *     Sun, 6 Nov 94 8:49:37 GMT      ; Unknown [Elm 70.85] 
+ *     Mon,  7 Jan 2002 07:21:22 GMT  ; Unknown [Postfix]
+ *     Sun, 06-Nov-1994 08:49:37 GMT  ; RFC 850 with four digit years
+ *
+ */
+
+#define TIMEPARSE(ds,hr10,hr1,min10,min1,sec10,sec1)        \
+    {                                                       \
+        ds.tm_hour = ((hr10 - '0') * 10) + (hr1 - '0');     \
+        ds.tm_min = ((min10 - '0') * 10) + (min1 - '0');    \
+        ds.tm_sec = ((sec10 - '0') * 10) + (sec1 - '0');    \
+    }
+#define TIMEPARSE_STD(ds,timstr)                            \
+    {                                                       \
+        TIMEPARSE(ds, timstr[0],timstr[1],                  \
+                      timstr[3],timstr[4],                  \
+                      timstr[6],timstr[7]);                 \
+    }
+
+APU_DECLARE(apr_time_t) apr_date_parse_rfc(const char *date)
+{
+    apr_time_exp_t ds;
+    apr_time_t result;
+    int mint, mon;
+    const char *monstr, *timstr, *gmtstr;
+    static const int months[12] =
+    {
+    ('J' << 16) | ('a' << 8) | 'n', ('F' << 16) | ('e' << 8) | 'b',
+    ('M' << 16) | ('a' << 8) | 'r', ('A' << 16) | ('p' << 8) | 'r',
+    ('M' << 16) | ('a' << 8) | 'y', ('J' << 16) | ('u' << 8) | 'n',
+    ('J' << 16) | ('u' << 8) | 'l', ('A' << 16) | ('u' << 8) | 'g',
+    ('S' << 16) | ('e' << 8) | 'p', ('O' << 16) | ('c' << 8) | 't',
+    ('N' << 16) | ('o' << 8) | 'v', ('D' << 16) | ('e' << 8) | 'c' };
+
+    if (!date)
+        return APR_DATE_BAD;
+
+    /* Not all dates have text months at the beginning. */
+    if (!apr_isdigit(date[0]))
+    {
+        while (*date && apr_isspace(*date)) /* Find first non-whitespace char */
+            ++date;
+
+        if (*date == '\0') 
+            return APR_DATE_BAD;
+
+        if ((date = strchr(date, ' ')) == NULL)   /* Find space after weekday */
+            return APR_DATE_BAD;
+
+        ++date;    /* Now pointing to first char after space, which should be */    }
+
+    /* start of the actual date information for all 11 formats. */
+    if (apr_date_checkmask(date, "## @$$ #### ##:##:## *")) {   /* RFC 1123 format */
+        ds.tm_year = ((date[7] - '0') * 10 + (date[8] - '0') - 19) * 100;
+
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[9] - '0') * 10) + (date[10] - '0');
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 12;
+        gmtstr = date + 20;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else if (apr_date_checkmask(date, "##-@$$-## ##:##:## *")) {/* RFC 850 format  */
+        ds.tm_year = ((date[7] - '0') * 10) + (date[8] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 10;
+        gmtstr = date + 19;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else if (apr_date_checkmask(date, "@$$ ~# ##:##:## ####*")) {
+        /* asctime format */
+        ds.tm_year = ((date[16] - '0') * 10 + (date[17] - '0') - 19) * 100;
+        if (ds.tm_year < 0) 
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[18] - '0') * 10) + (date[19] - '0');
+
+        if (date[4] == ' ')
+            ds.tm_mday = 0;
+        else
+            ds.tm_mday = (date[4] - '0') * 10;
+
+        ds.tm_mday += (date[5] - '0');
+
+        monstr = date;
+        timstr = date + 7;
+        gmtstr = NULL;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else if (apr_date_checkmask(date, "# @$$ #### ##:##:## *")) {
+        /* RFC 1123 format*/
+        ds.tm_year = ((date[6] - '0') * 10 + (date[7] - '0') - 19) * 100;
+
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[8] - '0') * 10) + (date[9] - '0');
+        ds.tm_mday = (date[0] - '0');
+
+        monstr = date + 2;
+        timstr = date + 11;
+        gmtstr = date + 20;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else if (apr_date_checkmask(date, "## @$$ ## ##:##:## *")) {
+        /* This is the old RFC 1123 date format - many many years ago, people
+         * used two-digit years.  Oh, how foolish.  */
+        ds.tm_year = ((date[7] - '0') * 10) + (date[8] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 10;
+        gmtstr = date + 19;
+
+        TIMEPARSE_STD(ds, timstr);
+    } 
+    else if (apr_date_checkmask(date, "# @$$ ## ##:##:## *")) {
+        /* This is the old RFC 1123 date format - many many years ago, people
+         * used two-digit years.  Oh, how foolish.  */
+        ds.tm_year = ((date[6] - '0') * 10) + (date[7] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = (date[0] - '0');
+
+        monstr = date + 2;
+        timstr = date + 9;
+        gmtstr = date + 18;
+
+        TIMEPARSE_STD(ds, timstr);
+    } 
+    else if (apr_date_checkmask(date, "## @$$ ## ##:## *")) {
+        /* Loser format.  This is quite bogus.  */
+        ds.tm_year = ((date[7] - '0') * 10) + (date[8] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 10;
+        gmtstr = NULL;
+
+        TIMEPARSE(ds, timstr[0],timstr[1], timstr[3],timstr[4], '0','0');
+    } 
+    else if (apr_date_checkmask(date, "# @$$ ## ##:## *")) {
+        /* Loser format.  This is quite bogus.  */
+        ds.tm_year = ((date[6] - '0') * 10) + (date[7] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = (date[0] - '0');
+
+        monstr = date + 2;
+        timstr = date + 9;
+        gmtstr = NULL;
+
+        TIMEPARSE(ds, timstr[0],timstr[1], timstr[3],timstr[4], '0','0');
+    }
+    else if (apr_date_checkmask(date, "## @$$ ## #:##:## *")) {
+        /* Loser format.  This is quite bogus.  */
+        ds.tm_year = ((date[7] - '0') * 10) + (date[8] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 9;
+        gmtstr = date + 18;
+
+        TIMEPARSE(ds, '0',timstr[1], timstr[3],timstr[4], timstr[6],timstr[7]);
+    }
+    else if (apr_date_checkmask(date, "# @$$ ## #:##:## *")) {
+         /* Loser format.  This is quite bogus.  */
+        ds.tm_year = ((date[6] - '0') * 10) + (date[7] - '0');
+
+        if (ds.tm_year < 70)
+            ds.tm_year += 100;
+
+        ds.tm_mday = (date[0] - '0');
+
+        monstr = date + 2;
+        timstr = date + 8;
+        gmtstr = date + 17;
+
+        TIMEPARSE(ds, '0',timstr[1], timstr[3],timstr[4], timstr[6],timstr[7]);
+    }
+    else if (apr_date_checkmask(date, " # @$$ #### ##:##:## *")) {   
+        /* RFC 1123 format with a space instead of a leading zero. */
+        ds.tm_year = ((date[7] - '0') * 10 + (date[8] - '0') - 19) * 100;
+
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[9] - '0') * 10) + (date[10] - '0');
+
+        ds.tm_mday = (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 12;
+        gmtstr = date + 20;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else if (apr_date_checkmask(date, "##-@$$-#### ##:##:## *")) {
+       /* RFC 1123 with dashes instead of spaces between date/month/year
+        * This also looks like RFC 850 with four digit years.
+        */
+        ds.tm_year = ((date[7] - '0') * 10 + (date[8] - '0') - 19) * 100;
+        if (ds.tm_year < 0)
+            return APR_DATE_BAD;
+
+        ds.tm_year += ((date[9] - '0') * 10) + (date[10] - '0');
+
+        ds.tm_mday = ((date[0] - '0') * 10) + (date[1] - '0');
+
+        monstr = date + 3;
+        timstr = date + 12;
+        gmtstr = date + 21;
+
+        TIMEPARSE_STD(ds, timstr);
+    }
+    else
+        return APR_DATE_BAD;
+
+    if (ds.tm_mday <= 0 || ds.tm_mday > 31)
+        return APR_DATE_BAD;
+
+    if ((ds.tm_hour > 23) || (ds.tm_min > 59) || (ds.tm_sec > 61)) 
+        return APR_DATE_BAD;
+
+    mint = (monstr[0] << 16) | (monstr[1] << 8) | monstr[2];
+    for (mon = 0; mon < 12; mon++)
+        if (mint == months[mon])
+            break;
+
+    if (mon == 12)
+        return APR_DATE_BAD;
+
+    if ((ds.tm_mday == 31) && (mon == 3 || mon == 5 || mon == 8 || mon == 10))
+        return APR_DATE_BAD;
+
+    /* February gets special check for leapyear */
+
+    if ((mon == 1) &&
+        ((ds.tm_mday > 29)
+        || ((ds.tm_mday == 29)
+        && ((ds.tm_year & 3)
+        || (((ds.tm_year % 100) == 0)
+        && (((ds.tm_year % 400) != 100)))))))
+        return APR_DATE_BAD;
+
+    ds.tm_mon = mon;
+
+    /* tm_gmtoff is the number of seconds off of GMT the time is.
+     *
+     * We only currently support: [+-]ZZZZ where Z is the offset in
+     * hours from GMT.
+     *
+     * If there is any confusion, tm_gmtoff will remain 0.
+     */
+    ds.tm_gmtoff = 0;
+    if (gmtstr && *gmtstr != '\0') {
+        /* Do we have a GMT? */
+        if (*(++gmtstr) != '\0') {
+            int offset;
+            switch (*(gmtstr++)) {
+            case '-':
+                offset = atoi(gmtstr);
+                ds.tm_gmtoff -= (offset / 100) * 60 * 60;
+                ds.tm_gmtoff -= (offset % 100) * 60;
+                break;
+            case '+':
+                offset = atoi(gmtstr);
+                ds.tm_gmtoff += (offset / 100) * 60 * 60;
+                ds.tm_gmtoff += (offset % 100) * 60;
+                break;
+            }
+        }
+    }
+
+    /* apr_time_exp_get uses tm_usec field, but it hasn't been set yet. 
+     * It should be safe to just zero out this value.
+     * tm_usec is the number of microseconds into the second.  HTTP only
+     * cares about second granularity.
+     */
+    ds.tm_usec = 0;
+
+    if (apr_time_exp_gmt_get(&result, &ds) != APR_SUCCESS) 
+        return APR_DATE_BAD;
+    
+    return result;
+}