From 3181a91148c13113e35f3b600a5ae2c682dfb5f4 Mon Sep 17 00:00:00 2001
From: Russell Bryant <russell@russellbryant.com>
Date: Mon, 30 Apr 2007 15:30:02 +0000
Subject: [PATCH] Merged revisions 62414 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r62414 | russell | 2007-04-30 10:25:31 -0500 (Mon, 30 Apr 2007) | 4 lines

When serving dynamic content, include a Cache-Control header to instruct the
browsers to not store the resulting content.
(issue #9621, reported by Pari, patch by me)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@62415 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 include/asterisk/http.h |  4 +++-
 main/http.c             | 16 ++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/asterisk/http.h b/include/asterisk/http.h
index 94befbc00c..9508188ab0 100644
--- a/include/asterisk/http.h
+++ b/include/asterisk/http.h
@@ -152,7 +152,9 @@ struct ast_http_uri {
 	AST_LIST_ENTRY(ast_http_uri) entry;
 	const char *description;
 	const char *uri;
-	int has_subtree;
+	unsigned int has_subtree:1;
+	/*! This URI mapping serves static content */
+	unsigned int static_content:1;
 	ast_http_callback callback;
 };
 
diff --git a/main/http.c b/main/http.c
index 5de4351310..c69ac72ffd 100644
--- a/main/http.c
+++ b/main/http.c
@@ -274,6 +274,7 @@ static struct ast_http_uri staticuri = {
 	.description = "Asterisk HTTP Static Delivery",
 	.uri = "static",
 	.has_subtree = 1,
+	.static_content = 1,
 };
 	
 struct ast_str *ast_http_error(int status, const char *title, const char *extra_header, const char *text)
@@ -562,7 +563,9 @@ static struct ast_str *handle_post(struct server_instance *ser, char *uri,
 	return ast_http_error(200, "OK", NULL, "File successfully uploaded.");
 }
 
-static struct ast_str *handle_uri(struct sockaddr_in *sin, char *uri, int *status, char **title, int *contentlength, struct ast_variable **cookies)
+static struct ast_str *handle_uri(struct sockaddr_in *sin, char *uri, int *status, 
+	char **title, int *contentlength, struct ast_variable **cookies, 
+	unsigned int *static_content)
 {
 	char *c;
 	struct ast_str *out = NULL;
@@ -644,6 +647,8 @@ static struct ast_str *handle_uri(struct sockaddr_in *sin, char *uri, int *statu
 			AST_RWLIST_UNLOCK(&uris);
 	}
 	if (urih) {
+		if (urih->static_content)
+			*static_content = 1;
 		out = urih->callback(sin, uri, vars, status, title, contentlength);
 		AST_RWLIST_UNLOCK(&uris);
 	} else {
@@ -757,6 +762,7 @@ static void *httpd_helper_thread(void *data)
 	char *uri, *title=NULL;
 	int status = 200, contentlength = 0;
 	struct ast_str *out = NULL;
+	unsigned int static_content = 0;
 
 	if (!fgets(buf, sizeof(buf), ser->f))
 		goto done;
@@ -850,7 +856,7 @@ static void *httpd_helper_thread(void *data)
 		out = ast_http_error(501, "Not Implemented", NULL,
 			"Attempt to use unimplemented / unsupported method");
 	else	/* try to serve it */
-		out = handle_uri(&ser->requestor, uri, &status, &title, &contentlength, &vars);
+		out = handle_uri(&ser->requestor, uri, &status, &title, &contentlength, &vars, &static_content);
 
 	/* If they aren't mopped up already, clean up the cookies */
 	if (vars)
@@ -866,8 +872,10 @@ static void *httpd_helper_thread(void *data)
 		fprintf(ser->f, "HTTP/1.1 %d %s\r\n"
 				"Server: Asterisk/%s\r\n"
 				"Date: %s\r\n"
-				"Connection: close\r\n",
-			status, title ? title : "OK", ASTERISK_VERSION, timebuf);
+				"Connection: close\r\n"
+				"%s",
+			status, title ? title : "OK", ASTERISK_VERSION, timebuf,
+			static_content ? "" : "Cache-Control: no-cache, no-store\r\n");
 		if (!contentlength) {	/* opaque body ? just dump it hoping it is properly formatted */
 			fprintf(ser->f, "%s", out->str);
 		} else {
-- 
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