Move literally everything out of src/or

This commit won't build yet -- it just puts everything in a slightly
more logical place.

The reasoning here is that "src/core" will hold the stuff that every (or
nearly every) tor instance will need in order to do onion routing.
Other features (including some necessary ones) will live in
"src/feature".  The "src/app" directory will hold the stuff needed
to have Tor be an application you can actually run.

This commit DOES NOT refactor the former contents of src/or into a
logical set of acyclic libraries, or change any code at all.  That
will have to come in the future.

We will continue to move things around and split them in the future,
but I hope this lays a reasonable groundwork for doing so.

1 files changed, 30 insertions, 0 deletions

diff --git a/src/core/or/extend_info_st.h b/src/core/or/extend_info_st.h
new file mode 100644
index 0000000000..277766c4d6
--- /dev/null
+++ b/src/core/or/extend_info_st.h
@@ -0,0 +1,30 @@
+/* Copyright (c) 2001 Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef EXTEND_INFO_ST_H
+#define EXTEND_INFO_ST_H
+
+#include "lib/crypt_ops/crypto_curve25519.h"
+#include "lib/crypt_ops/crypto_ed25519.h"
+
+/** Information on router used when extending a circuit. We don't need a
+ * full routerinfo_t to extend: we only need addr:port:keyid to build an OR
+ * connection, and onion_key to create the onionskin. Note that for onehop
+ * general-purpose tunnels, the onion_key is NULL. */
+struct extend_info_t {
+  char nickname[MAX_HEX_NICKNAME_LEN+1]; /**< This router's nickname for
+                                          * display. */
+  /** Hash of this router's RSA identity key. */
+  char identity_digest[DIGEST_LEN];
+  /** Ed25519 identity for this router, if any. */
+  ed25519_public_key_t ed_identity;
+  uint16_t port; /**< OR port. */
+  tor_addr_t addr; /**< IP address. */
+  crypto_pk_t *onion_key; /**< Current onionskin key. */
+  curve25519_public_key_t curve25519_onion_key;
+};
+
+#endif