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, 31 insertions, 0 deletions

diff --git a/src/core/crypto/relay_crypto.h b/src/core/crypto/relay_crypto.h
new file mode 100644
index 0000000000..67da93344f
--- /dev/null
+++ b/src/core/crypto/relay_crypto.h
@@ -0,0 +1,31 @@
+/* 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 */
+
+/**
+ * \file relay.h
+ * \brief Header file for relay.c.
+ **/
+
+#ifndef TOR_RELAY_CRYPTO_H
+#define TOR_RELAY_CRYPTO_H
+
+int relay_crypto_init(relay_crypto_t *crypto,
+                      const char *key_data, size_t key_data_len,
+                      int reverse, int is_hs_v3);
+
+int relay_decrypt_cell(circuit_t *circ, cell_t *cell,
+                       cell_direction_t cell_direction,
+                       crypt_path_t **layer_hint, char *recognized);
+void relay_encrypt_cell_outbound(cell_t *cell, origin_circuit_t *or_circ,
+                            crypt_path_t *layer_hint);
+void relay_encrypt_cell_inbound(cell_t *cell, or_circuit_t *or_circ);
+
+void relay_crypto_clear(relay_crypto_t *crypto);
+
+void relay_crypto_assert_ok(const relay_crypto_t *crypto);
+
+#endif /* !defined(TOR_RELAY_CRYPTO_H) */
+