From 7227e55dbadade25696ee5f416786861fc058826 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Fri, 5 Oct 2012 00:17:40 +0200
Subject: [PATCH] ENABLE_HTTP_DATE : add a Date: header to all HTTP responses

---
 miniupnpd/Changelog.txt |  5 ++++-
 miniupnpd/genconfig.sh  | 10 +++++++++-
 miniupnpd/upnphttp.c    | 20 +++++++++++++++++++-
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/miniupnpd/Changelog.txt b/miniupnpd/Changelog.txt
index 916ecd6..f841ae3 100644
--- a/miniupnpd/Changelog.txt
+++ b/miniupnpd/Changelog.txt
@@ -1,4 +1,7 @@
-$Id: Changelog.txt,v 1.309 2012/09/27 16:01:10 nanard Exp $
+$Id: Changelog.txt,v 1.318 2012/10/04 22:11:55 nanard Exp $
+
+2012/10/03:
+  ENABLE_HTTP_DATE : add a Date: header to all HTTP responses
 
 2012/09/27:
   Fixes with DISABLE_CONFIG_FILE
diff --git a/miniupnpd/genconfig.sh b/miniupnpd/genconfig.sh
index bce40ea..3e72848 100755
--- a/miniupnpd/genconfig.sh
+++ b/miniupnpd/genconfig.sh
@@ -1,5 +1,5 @@
 #! /bin/sh
-# $Id: genconfig.sh,v 1.58 2012/06/29 19:29:55 nanard Exp $
+# $Id: genconfig.sh,v 1.61 2012/10/03 21:07:29 nanard Exp $
 # miniupnp daemon
 # http://miniupnp.free.fr or http://miniupnp.tuxfamily.org/
 # (c) 2006-2012 Thomas Bernard
@@ -410,6 +410,14 @@ else
 fi
 echo "" >> ${CONFIGFILE}
 
+echo "/* Add the optional Date: header in all HTTP responses */" >> ${CONFIGFILE}
+if [ -n "$STRICT" ] ; then
+	echo "#define ENABLE_HTTP_DATE" >> ${CONFIGFILE}
+else
+	echo "/*#define ENABLE_HTTP_DATE*/" >> ${CONFIGFILE}
+fi
+echo "" >> ${CONFIGFILE}
+
 echo "/* disable reading and parsing of config file (miniupnpd.conf) */" >> ${CONFIGFILE}
 echo "/*#define DISABLE_CONFIG_FILE*/" >> ${CONFIGFILE}
 echo "" >> ${CONFIGFILE}
diff --git a/miniupnpd/upnphttp.c b/miniupnpd/upnphttp.c
index 248e325..3849644 100644
--- a/miniupnpd/upnphttp.c
+++ b/miniupnpd/upnphttp.c
@@ -1,4 +1,4 @@
-/* $Id: upnphttp.c,v 1.76 2012/09/27 13:15:03 nanard Exp $ */
+/* $Id: upnphttp.c,v 1.81 2012/10/04 22:09:34 nanard Exp $ */
 /* Project :  miniupnp
  * Website :  http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
  * Author :   Thomas Bernard
@@ -19,6 +19,9 @@
 #include <ctype.h>
 #include <errno.h>
 #include "config.h"
+#ifdef ENABLE_HTTP_DATE
+#include <time.h>
+#endif
 #include "upnphttp.h"
 #include "upnpdescgen.h"
 #include "miniupnpdpath.h"
@@ -730,6 +733,21 @@ BuildHeader_upnphttp(struct upnphttp * h, int respcode,
 	/* Content-Type MUST be 'text/xml; charset="utf-8"' according to UDA v1.1 */
 	/* Content-Type MUST be 'text/xml' according to UDA v1.0 */
 	/* Additional headers */
+#ifdef ENABLE_HTTP_DATE
+	{
+		char http_date[64];
+		time_t t;
+		struct tm tm;
+		time(&t);
+		gmtime_r(&t, &tm);
+		/* %a and %b depend on locale */
+		strftime(http_date, sizeof(http_date),
+		         "%a, %d %b %Y %H:%M:%S GMT", &tm);
+		h->res_buflen += snprintf(h->res_buf + h->res_buflen,
+		                          h->res_buf_alloclen - h->res_buflen,
+		                          "Date: %s\r\n", http_date);
+	}
+#endif
 #ifdef ENABLE_EVENTS
 	if(h->respflags & FLAG_TIMEOUT) {
 		h->res_buflen += snprintf(h->res_buf + h->res_buflen,