[mod_proxy] accept LF delimited headers, not just CRLF (fixes #2594)

From: Glenn Strauss <gstrauss@gluelogic.com>

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@3126 152afb58-edef-0310-8abb-c4023f1b3aa9

NEWS

@@ -50,6 +50,7 @@ NEWS
   * validate return values from strtol, strtoul (fixes #2564)
   * [mod_ssi] Add SSI vars SCRIPT_{URI,URL} and REQUEST_SCHEME (fixes #2721)
   * [config] warn if server.upload-dirs has non-existent dirs (fixes #2508)
+  * [mod_proxy] accept LF delimited headers, not just CRLF (fixes #2594)
 
 - 1.4.39 - 2016-01-02
   * [core] fix memset_s call (fixes #2698)

src/mod_proxy.c

@@ -532,18 +532,18 @@ static int proxy_response_parse(server *srv, connection *con, plugin_data *p, bu
 
 	UNUSED(srv);
 
-	/* \r\n -> \0\0 */
+	/* [\r]\n -> [\0]\0 */
 
 	buffer_copy_buffer(p->parse_response, in);
 
-	for (s = p->parse_response->ptr; NULL != (ns = strstr(s, "\r\n")); s = ns + 2) {
+	for (s = p->parse_response->ptr; NULL != (ns = strchr(s, '\n')); s = ns + 1) {
 		char *key, *value;
 		int key_len;
 		data_string *ds;
 		int copy_header;
 
 		ns[0] = '\0';
-		ns[1] = '\0';
+		if (s != ns && ns[-1] == '\r') ns[-1] = '\0';
 
 		if (-1 == http_response_status) {
 			/* The first line of a Response message is the Status-Line */