Merge remote-tracking branch 'asn/ticket22727_032_02'

src/or/nodelist.c

@@ -707,6 +707,48 @@ node_supports_ed25519_link_authentication(const node_t *node)
   return 0;
 }
 
+/** Return true iff <b>node</b> supports the hidden service directory version
+ * 3 protocol (proposal 224). */
+int
+node_supports_v3_hsdir(const node_t *node)
+{
+  tor_assert(node);
+
+  if (node->rs) {
+    return node->rs->supports_v3_hsdir;
+  }
+  if (node->ri) {
+    if (node->ri->protocol_list == NULL) {
+      return 0;
+    }
+    return protocol_list_supports_protocol(node->ri->protocol_list,
+                                           PRT_HSDIR, PROTOVER_HSDIR_V3);
+  }
+  tor_assert_nonfatal_unreached_once();
+  return 0;
+}
+
+/** Return true iff <b>node</b> supports ed25519 authentication as an hidden
+ * service introduction point.*/
+int
+node_supports_ed25519_hs_intro(const node_t *node)
+{
+  tor_assert(node);
+
+  if (node->rs) {
+    return node->rs->supports_ed25519_hs_intro;
+  }
+  if (node->ri) {
+    if (node->ri->protocol_list == NULL) {
+      return 0;
+    }
+    return protocol_list_supports_protocol(node->ri->protocol_list,
+                                           PRT_HSINTRO, PROTOVER_HS_INTRO_V3);
+  }
+  tor_assert_nonfatal_unreached_once();
+  return 0;
+}
+
 /** Return the RSA ID key's SHA1 digest for the provided node. */
 const uint8_t *
 node_get_rsa_id_digest(const node_t *node)

src/or/nodelist.h

@@ -58,6 +58,8 @@ const ed25519_public_key_t *node_get_ed25519_id(const node_t *node);
 int node_ed25519_id_matches(const node_t *node,
                             const ed25519_public_key_t *id);
 int node_supports_ed25519_link_authentication(const node_t *node);
+int node_supports_v3_hsdir(const node_t *node);
+int node_supports_ed25519_hs_intro(const node_t *node);
 const uint8_t *node_get_rsa_id_digest(const node_t *node);
 
 int node_has_ipv6_addr(const node_t *node);

src/or/protover.h

@@ -17,6 +17,11 @@
 /* This is a guess. */
 #define FIRST_TOR_VERSION_TO_ADVERTISE_PROTOCOLS "0.2.9.3-alpha"
 
+/** The protover version number that signifies HSDir support for HSv3 */
+#define PROTOVER_HSDIR_V3 2
+/** The protover version number that signifies HSv3 intro point support */
+#define PROTOVER_HS_INTRO_V3 4
+
 /** List of recognized subprotocols. */
 typedef enum protocol_type_t {
   PRT_LINK,