1 files changed, 85 insertions, 0 deletions
diff --git a/src/feature/relay/transport_config.h b/src/feature/relay/transport_config.h
new file mode 100644
index 0000000000..6d956d9af1
--- /dev/null
+++ b/src/feature/relay/transport_config.h
@@ -0,0 +1,85 @@
+/* Copyright (c) 2001 Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2020, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * @file transport_config.h
+ * @brief Header for feature/relay/transport_config.c
+ **/
+
+#ifndef TOR_FEATURE_RELAY_TRANSPORT_CONFIG_H
+#define TOR_FEATURE_RELAY_TRANSPORT_CONFIG_H
+
+#ifdef HAVE_MODULE_RELAY
+
+#include "lib/testsupport/testsupport.h"
+
+struct or_options_t;
+struct smartlist_t;
+
+int options_validate_server_transport(const struct or_options_t *old_options,
+                                      struct or_options_t *options,
+                                      char **msg);
+
+char *pt_get_bindaddr_from_config(const char *transport);
+struct smartlist_t *pt_get_options_for_server_transport(const char *transport);
+
+int options_act_server_transport(const struct or_options_t *old_options);
+
+#ifdef RELAY_TRANSPORT_CONFIG_PRIVATE
+
+STATIC struct smartlist_t *get_options_from_transport_options_line(
+                      const char *line,
+                      const char *transport);
+
+#endif /* defined(RELAY_TRANSPORT_CONFIG_PRIVATE) */
+
+#else /* !defined(HAVE_MODULE_RELAY) */
+
+/** When tor is compiled with the relay module disabled, it can't be
+ * configured with server pluggable transports.
+ *
+ * Returns -1 and sets msg to a newly allocated string, if ExtORPort,
+ * ServerTransportPlugin, ServerTransportListenAddr, or
+ * ServerTransportOptions are set in options. Otherwise returns 0. */
+static inline int
+options_validate_server_transport(const struct or_options_t *old_options,
+                                  struct or_options_t *options,
+                                  char **msg)
+{
+  (void)old_options;
+
+  /* These ExtORPort checks are too strict, and will reject valid configs
+   * that disable ports, like "ExtORPort 0". */
+  if (options->ServerTransportPlugin ||
+      options->ServerTransportListenAddr ||
+      options->ServerTransportOptions ||
+      options->ExtORPort_lines) {
+    /* REJECT() this configuration */
+    *msg = tor_strdup("This tor was built with relay mode disabled. "
+                      "It can not be configured with an ExtORPort, "
+                      "a ServerTransportPlugin, a ServerTransportListenAddr, "
+                      "or ServerTransportOptions.");
+    return -1;
+  }
+
+  return 0;
+}
+
+#define pt_get_bindaddr_from_config(transport) \
+  (((void)(transport)),NULL)
+
+/* 31851: called from client/transports.c, but only from server code */
+#define pt_get_options_for_server_transport(transport) \
+  (((void)(transport)),NULL)
+
+#define options_validate_server_transport(old_options, options, msg) \
+  (((void)(old_options)),((void)(options)),((void)(msg)),0)
+#define options_act_server_transport(old_options) \
+  (((void)(old_options)),0)
+
+#endif /* defined(HAVE_MODULE_RELAY) */
+
+#endif /* !defined(TOR_FEATURE_RELAY_TRANSPORT_CONFIG_H) */