Make ext_orport.c relay-mode-only.

changes/ticket33368

@@ -0,0 +1,3 @@
+  o Minor features (client-only compilation):
+    - Disable more code related to the ext_orport protocol when compiling
+      without support for relay mode. Closes ticket 33368.

src/feature/relay/ext_orport.h

@@ -31,6 +31,8 @@
 #define EXT_OR_CONN_STATE_FLUSHING 5
 #define EXT_OR_CONN_STATE_MAX_ 5
 
+#ifdef HAVE_MODULE_RELAY
+
 int connection_ext_or_start_auth(or_connection_t *or_conn);
 
 void connection_or_set_ext_or_identifier(or_connection_t *conn);
@@ -45,6 +47,41 @@ int init_ext_or_cookie_authentication(int is_enabled);
 char *get_ext_or_auth_cookie_file_name(void);
 void ext_orport_free_all(void);
 
+#else /* !defined(HAVE_MODULE_RELAY) */
+
+static inline int
+connection_ext_or_start_auth(or_connection_t *conn)
+{
+  (void)conn;
+  tor_assert_nonfatal_unreached();
+  return -1;
+}
+static inline int
+connection_ext_or_finished_flushing(or_connection_t *conn)
+{
+  (void)conn;
+  tor_assert_nonfatal_unreached();
+  return -1;
+}
+static inline int
+connection_ext_or_process_inbuf(or_connection_t *conn)
+{
+  (void)conn;
+  tor_assert_nonfatal_unreached();
+  return -1;
+}
+#define connection_or_set_ext_or_identifier(conn) \
+  ((void)(conn))
+#define connection_or_remove_from_ext_or_id_map(conn) \
+  ((void)(conn))
+#define connection_or_clear_ext_or_id_map() \
+  STMT_NIL
+
+#define get_ext_or_auth_cookie_file_name() \
+  (NULL)
+
+#endif /* defined(HAVE_MODULE_RELAY) */
+
 #ifdef EXT_ORPORT_PRIVATE
 STATIC int connection_write_ext_or_command(connection_t *conn,
                                            uint16_t command,

src/feature/relay/include.am

@@ -2,7 +2,6 @@
 # Legacy shared relay code: migrate to the relay module over time
 LIBTOR_APP_A_SOURCES += 			\
 	src/feature/relay/dns.c			\
-	src/feature/relay/ext_orport.c		\
 	src/feature/relay/onion_queue.c		\
 	src/feature/relay/router.c		\
 	src/feature/relay/routerkeys.c		\
@@ -12,6 +11,7 @@ LIBTOR_APP_A_SOURCES += 			\
 
 # ADD_C_FILE: INSERT SOURCES HERE.
 MODULE_RELAY_SOURCES = 						\
+	src/feature/relay/ext_orport.c		                \
 	src/feature/relay/routermode.c				\
 	src/feature/relay/relay_config.c			\
 	src/feature/relay/relay_periodic.c			\