From: Brian Pane <brianp@apache.org>
Date: Sun, 21 Apr 2002 07:55:50 +0000 (+0000)
Subject: Added ap_recent_rfc822_date(), which uses the recent timestamp cache
X-Git-Tag: 2.0.36~132
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=166b62f9c5d52727e950db8e9160184fdc6c8b63;p=apache

Added ap_recent_rfc822_date(), which uses the recent timestamp cache
Obtained from:
Submitted by:
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94735 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/include/util_time.h b/include/util_time.h
index b69aadc759..00cacf6cf5 100644
--- a/include/util_time.h
+++ b/include/util_time.h
@@ -109,6 +109,13 @@ AP_DECLARE(apr_status_t) ap_explode_recent_gmt(apr_time_exp_t *tm,
  */
 AP_DECLARE(apr_status_t) ap_recent_ctime(char *date_str, apr_time_t t);
 
+/**
+ * format a recent timestamp in the RFC822 format
+ * @param date_str String to write to (must have length >= APR_RFC822_DATE_LEN)
+ * @param t the time to convert 
+ */
+AP_DECLARE(apr_status_t) ap_recent_rfc822_date(char *date_str, apr_time_t t);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/modules/http/http_protocol.c b/modules/http/http_protocol.c
index 331a4a55f9..84c171873e 100644
--- a/modules/http/http_protocol.c
+++ b/modules/http/http_protocol.c
@@ -89,6 +89,7 @@
 #include "apr_date.h"           /* For apr_date_parse_http and APR_DATE_BAD */
 #include "util_charset.h"
 #include "util_ebcdic.h"
+#include "util_time.h"
 
 #include "mod_core.h"
 
@@ -1071,7 +1072,7 @@ static void basic_http_header(request_rec *r, apr_bucket_brigade *bb,
     apr_brigade_write(bb, NULL, NULL, tmp, len);
 
     date = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
-    apr_rfc822_date(date, r->request_time);
+    ap_recent_rfc822_date(date, r->request_time);
 
     h.pool = r->pool;
     h.bb = bb;
@@ -1444,7 +1445,7 @@ AP_CORE_DECLARE_NONSTD(apr_status_t) ap_http_header_filter(ap_filter_t *f,
      */
     if (r->no_cache && !apr_table_get(r->headers_out, "Expires")) {
         char *date = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
-        apr_rfc822_date(date, r->request_time);
+        ap_recent_rfc822_date(date, r->request_time);
         apr_table_addn(r->headers_out, "Expires", date);
     }
 
diff --git a/server/util_time.c b/server/util_time.c
index 7a0880953b..ec9400de40 100644
--- a/server/util_time.c
+++ b/server/util_time.c
@@ -218,3 +218,63 @@ AP_DECLARE(apr_status_t) ap_recent_ctime(char *date_str, apr_time_t t)
 
     return APR_SUCCESS;
 }
+
+static const char month_snames[12][4] =
+{
+    "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+static const char day_snames[7][4] =
+{
+    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+};
+
+AP_DECLARE(apr_status_t) ap_recent_rfc822_date(char *date_str, apr_time_t t)
+{
+    /* ### This code is a clone of apr_rfc822_date(), except that it
+     * uses ap_explode_recent_gmt() instead of apr_time_exp_gmt().
+     */
+    apr_time_exp_t xt;
+    const char *s;
+    int real_year;
+
+    ap_explode_recent_gmt(&xt, t);
+
+    /* example: "Sat, 08 Jan 2000 18:31:41 GMT" */
+    /*           12345678901234567890123456789  */
+
+    s = &day_snames[xt.tm_wday][0];
+    *date_str++ = *s++;
+    *date_str++ = *s++;
+    *date_str++ = *s++;
+    *date_str++ = ',';
+    *date_str++ = ' ';
+    *date_str++ = xt.tm_mday / 10 + '0';
+    *date_str++ = xt.tm_mday % 10 + '0';
+    *date_str++ = ' ';
+    s = &month_snames[xt.tm_mon][0];
+    *date_str++ = *s++;
+    *date_str++ = *s++;
+    *date_str++ = *s++;
+    *date_str++ = ' ';
+    real_year = 1900 + xt.tm_year;
+    /* This routine isn't y10k ready. */
+    *date_str++ = real_year / 1000 + '0';
+    *date_str++ = real_year % 1000 / 100 + '0';
+    *date_str++ = real_year % 100 / 10 + '0';
+    *date_str++ = real_year % 10 + '0';
+    *date_str++ = ' ';
+    *date_str++ = xt.tm_hour / 10 + '0';
+    *date_str++ = xt.tm_hour % 10 + '0';
+    *date_str++ = ':';
+    *date_str++ = xt.tm_min / 10 + '0';
+    *date_str++ = xt.tm_min % 10 + '0';
+    *date_str++ = ':';
+    *date_str++ = xt.tm_sec / 10 + '0';
+    *date_str++ = xt.tm_sec % 10 + '0';
+    *date_str++ = ' ';
+    *date_str++ = 'G';
+    *date_str++ = 'M';
+    *date_str++ = 'T';
+    *date_str++ = 0;
+    return APR_SUCCESS;
+}