Move handling of connect_ports list to its own source module.

Michael

1 files changed, 78 insertions, 0 deletions

diff --git a/src/connect-ports.c b/src/connect-ports.c
new file mode 100644
index 0000000..045adc9
--- /dev/null
+++ b/src/connect-ports.c
@@ -0,0 +1,78 @@
+/* tinyproxy - A fast light-weight HTTP proxy
+ * Copyright (C) 1998 Steven Young <sdyoung@miranda.org>
+ * Copyright (C) 1999-2005 Robert James Kaes <rjkaes@users.sourceforge.net>
+ * Copyright (C) 2009 Michael Adam <obnox@samba.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "connect-ports.h"
+#include "vector.h"
+#include "log.h"
+
+/*
+ * This is a global variable which stores which ports are allowed by
+ * the CONNECT method.  It's a security thing.
+ */
+static vector_t ports_allowed_by_connect = NULL;
+
+/*
+ * Now, this routine adds a "port" to the list.  It also creates the list if
+ * it hasn't already by done.
+ */
+void add_connect_port_allowed (int port)
+{
+        if (!ports_allowed_by_connect) {
+                ports_allowed_by_connect = vector_create ();
+                if (!ports_allowed_by_connect) {
+                        log_message (LOG_WARNING,
+                                     "Could not create a list of allowed CONNECT ports");
+                        return;
+                }
+        }
+
+        log_message (LOG_INFO,
+                     "Adding Port [%d] to the list allowed by CONNECT", port);
+        vector_append (ports_allowed_by_connect, (void **) &port,
+                       sizeof (port));
+}
+
+/*
+ * This routine checks to see if a port is allowed in the CONNECT method.
+ *
+ * Returns: 1 if allowed
+ *          0 if denied
+ */
+int check_allowed_connect_ports (int port)
+{
+        size_t i;
+        int *data;
+
+        /*
+         * A port list is REQUIRED for a CONNECT request to function
+         * properly.  This closes a potential security hole.
+         */
+        if (!ports_allowed_by_connect)
+                return 0;
+
+        for (i = 0; i != (size_t) vector_length (ports_allowed_by_connect); ++i) {
+                data =
+                    (int *) vector_getentry (ports_allowed_by_connect, i, NULL);
+                if (data && *data == port)
+                        return 1;
+        }
+
+        return 0;
+}