Merge branch 'maint-0.4.6'

changes/ticket40476

@@ -0,0 +1,8 @@
+  o Major feature (onion service v2):
+    - Tor does NOT allow anymore to create v2 services, to connect as a client
+      to a v2 service and for a relay to be a v2 HSDir or introduction point.
+      This effectively disable onion service version 2 tor wide. Closes 40476.
+    - The control port command HSFETCH and HSPOST don't allow version 2 as well.
+      It is also not possible to create a v2 service with ADD_ONION.
+    - See https://blog.torproject.org/v2-deprecation-timeline for details on
+      how to transition from v2 to v3.

src/core/or/connection_edge.c

@@ -1629,23 +1629,6 @@ consider_plaintext_ports(entry_connection_t *conn, uint16_t port)
   return 0;
 }
 
-/** Return true iff <b>query</b> is a syntactically valid service ID (as
- * generated by rend_get_service_id).  */
-static int
-rend_valid_v2_service_id(const char *query)
-{
-  /** Length of 'y' portion of 'y.onion' URL. */
-#define REND_SERVICE_ID_LEN_BASE32 16
-
-  if (strlen(query) != REND_SERVICE_ID_LEN_BASE32)
-    return 0;
-
-  if (strspn(query, BASE32_CHARS) != REND_SERVICE_ID_LEN_BASE32)
-    return 0;
-
-  return 1;
-}
-
 /** Parse the given hostname in address. Returns true if the parsing was
  * successful and type_out contains the type of the hostname. Else, false is
  * returned which means it was not recognized and type_out is set to
@@ -1709,14 +1692,6 @@ parse_extended_hostname(char *address, hostname_type_t *type_out)
   if (q != address) {
     memmove(address, q, strlen(q) + 1 /* also get \0 */);
   }
-  /* v2 onion address check. */
-  if (strlen(query) == REND_SERVICE_ID_LEN_BASE32) {
-    *type_out = ONION_V2_HOSTNAME;
-    if (rend_valid_v2_service_id(query)) {
-      goto success;
-    }
-    goto failed;
-  }
 
   /* v3 onion address check. */
   if (strlen(query) == HS_SERVICE_ADDR_LEN_BASE32) {
@@ -1736,8 +1711,7 @@ parse_extended_hostname(char *address, hostname_type_t *type_out)
  failed:
   /* otherwise, return to previous state and return 0 */
   *s = '.';
-  const bool is_onion = (*type_out == ONION_V2_HOSTNAME) ||
-    (*type_out == ONION_V3_HOSTNAME);
+  const bool is_onion = (*type_out == ONION_V3_HOSTNAME);
   log_warn(LD_APP, "Invalid %shostname %s; rejecting",
            is_onion ? "onion " : "",
            safe_str_client(address));

src/feature/dircache/dircache.c

@@ -1569,6 +1569,8 @@ directory_handle_command_post,(dir_connection_t *conn, const char *headers,
   char *url = NULL;
   const or_options_t *options = get_options();
 
+  (void) body_len;
+
   log_debug(LD_DIRSERV,"Received POST command.");
 
   conn->base_.state = DIR_CONN_STATE_SERVER_WRITING;

src/feature/hs/hs_config.c

@@ -159,8 +159,12 @@ static bool
 check_value_oob(int i, const char *name, int low, int high)
 {
   if (i < low || i > high) {
-    log_warn(LD_CONFIG, "%s must be between %d and %d, not %d.",
-             name, low, high, i);
+    if (low == high) {
+      log_warn(LD_CONFIG, "%s must be %d, not %d.", name, low, i);
+    } else {
+      log_warn(LD_CONFIG, "%s must be between %d and %d, not %d.",
+               name, low, high, i);
+    }
     return true;
   }
   return false;

src/test/test_hs_common.c

@@ -808,13 +808,11 @@ test_parse_extended_hostname(void *arg)
   tt_assert(parse_extended_hostname(address4, &type));
   tt_int_op(type, OP_EQ, NORMAL_HOSTNAME);
 
-  tt_assert(parse_extended_hostname(address5, &type));
-  tt_int_op(type, OP_EQ, ONION_V2_HOSTNAME);
-  tt_str_op(address5, OP_EQ, "abcdefghijklmnop");
+  tt_assert(!parse_extended_hostname(address5, &type));
+  tt_int_op(type, OP_EQ, BAD_HOSTNAME);
 
-  tt_assert(parse_extended_hostname(address6, &type));
-  tt_int_op(type, OP_EQ, ONION_V2_HOSTNAME);
-  tt_str_op(address6, OP_EQ, "abcdefghijklmnop");
+  tt_assert(!parse_extended_hostname(address6, &type));
+  tt_int_op(type, OP_EQ, BAD_HOSTNAME);
 
   tt_assert(!parse_extended_hostname(address7, &type));
   tt_int_op(type, OP_EQ, BAD_HOSTNAME);

src/test/test_hs_config.c

@@ -48,7 +48,7 @@ test_invalid_service(void *arg)
     setup_full_capture_of_logs(LOG_WARN);
     ret = helper_config_service(conf, 1);
     tt_int_op(ret, OP_EQ, -1);
-    expect_log_msg_containing("HiddenServiceVersion must be between 3 and 3");
+    expect_log_msg_containing("HiddenServiceVersion must be 3, not 1");
     teardown_capture_of_logs();
   }