send 100-continue-header if client requests it

svn path=/icecast/trunk/icecast/; revision=19053

configure.in

@@ -38,6 +38,7 @@ AC_CHECK_HEADERS([pwd.h unistd.h grp.h sys/types.h],,,AC_INCLUDES_DEFAULT)
 AC_CHECK_FUNCS([setuid])
 AC_CHECK_FUNCS([chroot])
 AC_CHECK_FUNCS([chown])
+AC_CHECK_FUNCS([strcasestr])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 XIPH_C__FUNC__

src/client.c

@@ -202,6 +202,12 @@ static void client_send_error(client_t *client, int status, int plain, const cha
     fserve_add_client (client, NULL);
 }
 
+void client_send_100(client_t *client)
+{
+    /* On demand inject a HTTP/1.1 100 Continue to make sure clients are happy */
+    sock_write (client->con->sock, "HTTP/1.1 100 Continue\r\n\r\n");
+}
+
 void client_send_400(client_t *client, const char *message)
 {
     client_send_error(client, 400, 0, message);

src/client.h

@@ -70,6 +70,7 @@ typedef struct _client_tag
 
 int client_create (client_t **c_ptr, connection_t *con, http_parser_t *parser);
 void client_destroy(client_t *client);
+void client_send_100(client_t *client);
 void client_send_404(client_t *client, const char *message);
 void client_send_401(client_t *client);
 void client_send_403(client_t *client, const char *message);

src/connection.c

@@ -804,6 +804,7 @@ int connection_complete_source (source_t *source, int response)
     if (global.sources < config->source_limit)
     {
         const char *contenttype;
+        const char *expectcontinue;
         mount_proxy *mountinfo;
         format_type_t format_type;
 
@@ -846,6 +847,21 @@ int connection_complete_source (source_t *source, int response)
             return -1;
         }
 
+	/* For PUT support we check for 100-continue and send back a 100 to stay in spec */
+	expectcontinue = httpp_getvar (source->parser, "expect");
+	if (expectcontinue != NULL)
+	{
+#ifdef HAVE_STRCASESTR
+	    if (strcasestr (expectcontinue, "100-continue") != NULL)
+#else
+	    WARN0("OS doesn't support case insenestive substring checks...");
+	    if (strstr (expectcontinue, "100-continue") != NULL)
+#endif
+	    {
+		client_send_100 (source->client);
+	    }
+	}
+
         global.sources++;
         stats_event_args (NULL, "sources", "%d", global.sources);
         global_unlock();