1 files changed, 79 insertions, 0 deletions
diff --git a/src/feature/hs/hs_intropoint.h b/src/feature/hs/hs_intropoint.h
new file mode 100644
index 0000000000..5f82920991
--- /dev/null
+++ b/src/feature/hs/hs_intropoint.h
@@ -0,0 +1,79 @@
+/* Copyright (c) 2016-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * \file hs_intropoint.h
+ * \brief Header file for hs_intropoint.c.
+ **/
+
+#ifndef TOR_HS_INTRO_H
+#define TOR_HS_INTRO_H
+
+#include "lib/crypt_ops/crypto_curve25519.h"
+#include "or/torcert.h"
+
+/* Authentication key type in an ESTABLISH_INTRO cell. */
+typedef enum {
+  HS_INTRO_AUTH_KEY_TYPE_LEGACY0 = 0x00,
+  HS_INTRO_AUTH_KEY_TYPE_LEGACY1 = 0x01,
+  HS_INTRO_AUTH_KEY_TYPE_ED25519 = 0x02,
+} hs_intro_auth_key_type_t;
+
+/* INTRODUCE_ACK status code. */
+typedef enum {
+  HS_INTRO_ACK_STATUS_SUCCESS    = 0x0000,
+  HS_INTRO_ACK_STATUS_UNKNOWN_ID = 0x0001,
+  HS_INTRO_ACK_STATUS_BAD_FORMAT = 0x0002,
+  HS_INTRO_ACK_STATUS_CANT_RELAY = 0x0003,
+} hs_intro_ack_status_t;
+
+/* Object containing introduction point common data between the service and
+ * the client side. */
+typedef struct hs_intropoint_t {
+  /* Does this intro point only supports legacy ID ?. */
+  unsigned int is_only_legacy : 1;
+
+  /* Authentication key certificate from the descriptor. */
+  tor_cert_t *auth_key_cert;
+  /* A list of link specifier. */
+  smartlist_t *link_specifiers;
+} hs_intropoint_t;
+
+int hs_intro_received_establish_intro(or_circuit_t *circ,
+                                      const uint8_t *request,
+                                      size_t request_len);
+int hs_intro_received_introduce1(or_circuit_t *circ, const uint8_t *request,
+                                 size_t request_len);
+
+MOCK_DECL(int, hs_intro_send_intro_established_cell,(or_circuit_t *circ));
+
+/* also used by rendservice.c */
+int hs_intro_circuit_is_suitable_for_establish_intro(const or_circuit_t *circ);
+
+hs_intropoint_t *hs_intro_new(void);
+void hs_intropoint_clear(hs_intropoint_t *ip);
+
+#ifdef HS_INTROPOINT_PRIVATE
+
+#include "trunnel/hs/cell_establish_intro.h"
+#include "trunnel/hs/cell_introduce1.h"
+
+STATIC int
+verify_establish_intro_cell(const trn_cell_establish_intro_t *out,
+                            const uint8_t *circuit_key_material,
+                            size_t circuit_key_material_len);
+
+STATIC void
+get_auth_key_from_cell(ed25519_public_key_t *auth_key_out,
+                       unsigned int cell_type, const void *cell);
+
+STATIC int introduce1_cell_is_legacy(const uint8_t *request);
+STATIC int handle_introduce1(or_circuit_t *client_circ,
+                             const uint8_t *request, size_t request_len);
+STATIC int validate_introduce1_parsed_cell(const trn_cell_introduce1_t *cell);
+STATIC int circuit_is_suitable_for_introduce1(const or_circuit_t *circ);
+
+#endif /* defined(HS_INTROPOINT_PRIVATE) */
+
+#endif /* !defined(TOR_HS_INTRO_H) */
+