commit d1494d140cbb3f8b8734e3973378e99128b308c9 Author: Neel Chauhan neel@neelc.org Date: Thu Nov 12 11:19:21 2020 -0800

Remove orconn_ext_or_id_map and related functions --- changes/ticket33383 | 4 +++ src/core/mainloop/connection.c | 2 -- src/feature/relay/ext_orport.c | 58 ------------------------------------------ src/feature/relay/ext_orport.h | 7 ----- src/test/test_extorport.c | 55 --------------------------------------- 5 files changed, 4 insertions(+), 122 deletions(-)

diff --git a/changes/ticket33383 b/changes/ticket33383 new file mode 100644 index 0000000000..8a1b83cdab --- /dev/null +++ b/changes/ticket33383 @@ -0,0 +1,4 @@ + o Code simplification and refactoring: + - Remove the orconn_ext_or_id_map structure and related functions. Nothing + outside of unit tests looks up anything in this structure. Closes ticket + 33383. Patch by Neel Chauhan. diff --git a/src/core/mainloop/connection.c b/src/core/mainloop/connection.c index 3d551c4ba8..4c226abc4b 100644 --- a/src/core/mainloop/connection.c +++ b/src/core/mainloop/connection.c @@ -948,7 +948,6 @@ connection_free_minimal(connection_t *conn) connection_or_clear_identity(TO_OR_CONN(conn)); } if (conn->type == CONN_TYPE_OR || conn->type == CONN_TYPE_EXT_OR) { - connection_or_remove_from_ext_or_id_map(TO_OR_CONN(conn)); tor_free(TO_OR_CONN(conn)->ext_or_conn_id); tor_free(TO_OR_CONN(conn)->ext_or_auth_correct_client_hash); tor_free(TO_OR_CONN(conn)->ext_or_transport); @@ -5824,7 +5823,6 @@ connection_free_all(void)

/* Unlink everything from the identity map. */ connection_or_clear_identity_map(); - connection_or_clear_ext_or_id_map();

/* Clear out our list of broken connections */ clear_broken_connection_map(0); diff --git a/src/feature/relay/ext_orport.c b/src/feature/relay/ext_orport.c index 1bb8741e45..c45a0b463f 100644 --- a/src/feature/relay/ext_orport.c +++ b/src/feature/relay/ext_orport.c @@ -656,75 +656,17 @@ connection_ext_or_start_auth(or_connection_t *or_conn) return 0; }

-/** Global map between Extended ORPort identifiers and OR - * connections. */ -static digestmap_t *orconn_ext_or_id_map = NULL; - -/** Remove the Extended ORPort identifier of <b>conn</b> from the - * global identifier list. Also, clear the identifier from the - * connection itself. */ -void -connection_or_remove_from_ext_or_id_map(or_connection_t *conn) -{ - or_connection_t *tmp; - if (!orconn_ext_or_id_map) - return; - if (!conn->ext_or_conn_id) - return; - - tmp = digestmap_remove(orconn_ext_or_id_map, conn->ext_or_conn_id); - if (!tor_digest_is_zero(conn->ext_or_conn_id)) - tor_assert(tmp == conn); - - memset(conn->ext_or_conn_id, 0, EXT_OR_CONN_ID_LEN); -} - -#ifdef TOR_UNIT_TESTS -/** Return the connection whose ext_or_id is <b>id</b>. Return NULL if no such - * connection is found. */ -or_connection_t * -connection_or_get_by_ext_or_id(const char *id) -{ - if (!orconn_ext_or_id_map) - return NULL; - return digestmap_get(orconn_ext_or_id_map, id); -} -#endif /* defined(TOR_UNIT_TESTS) */ - -/** Deallocate the global Extended ORPort identifier list */ -void -connection_or_clear_ext_or_id_map(void) -{ - digestmap_free(orconn_ext_or_id_map, NULL); - orconn_ext_or_id_map = NULL; -} - /** Creates an Extended ORPort identifier for <b>conn</b> and deposits * it into the global list of identifiers. */ void connection_or_set_ext_or_identifier(or_connection_t *conn) { char random_id[EXT_OR_CONN_ID_LEN]; - or_connection_t *tmp; - - if (!orconn_ext_or_id_map) - orconn_ext_or_id_map = digestmap_new(); - - /* Remove any previous identifiers: */ - if (conn->ext_or_conn_id && !tor_digest_is_zero(conn->ext_or_conn_id)) - connection_or_remove_from_ext_or_id_map(conn); - - do { - crypto_rand(random_id, sizeof(random_id)); - } while (digestmap_get(orconn_ext_or_id_map, random_id));

if (!conn->ext_or_conn_id) conn->ext_or_conn_id = tor_malloc_zero(EXT_OR_CONN_ID_LEN);

memcpy(conn->ext_or_conn_id, random_id, EXT_OR_CONN_ID_LEN); - - tmp = digestmap_set(orconn_ext_or_id_map, random_id, conn); - tor_assert(!tmp); }

/** Free any leftover allocated memory of the ext_orport.c subsystem. */ diff --git a/src/feature/relay/ext_orport.h b/src/feature/relay/ext_orport.h index 416c358397..b149f9eb1c 100644 --- a/src/feature/relay/ext_orport.h +++ b/src/feature/relay/ext_orport.h @@ -36,8 +36,6 @@ int connection_ext_or_start_auth(or_connection_t *or_conn);

void connection_or_set_ext_or_identifier(or_connection_t *conn); -void connection_or_remove_from_ext_or_id_map(or_connection_t *conn); -void connection_or_clear_ext_or_id_map(void); int connection_ext_or_finished_flushing(or_connection_t *conn); int connection_ext_or_process_inbuf(or_connection_t *or_conn); char *get_ext_or_auth_cookie_file_name(void); @@ -71,10 +69,6 @@ connection_ext_or_process_inbuf(or_connection_t *conn) } #define connection_or_set_ext_or_identifier(conn) \ ((void)(conn)) -#define connection_or_remove_from_ext_or_id_map(conn) \ - ((void)(conn)) -#define connection_or_clear_ext_or_id_map() \ - STMT_NIL

#define get_ext_or_auth_cookie_file_name() \ (NULL) @@ -94,7 +88,6 @@ STATIC int handle_client_auth_nonce(const char *client_nonce, #ifdef TOR_UNIT_TESTS extern uint8_t *ext_or_auth_cookie; extern int ext_or_auth_cookie_is_set; -or_connection_t *connection_or_get_by_ext_or_id(const char *id); #endif #endif /* defined(EXT_ORPORT_PRIVATE) */

diff --git a/src/test/test_extorport.c b/src/test/test_extorport.c index 7935530653..fd260f06dc 100644 --- a/src/test/test_extorport.c +++ b/src/test/test_extorport.c @@ -24,60 +24,6 @@ #include <sys/stat.h> #endif

-/* Test connection_or_remove_from_ext_or_id_map and - * connection_or_set_ext_or_identifier */ -static void -test_ext_or_id_map(void *arg) -{ - or_connection_t *c1 = NULL, *c2 = NULL, *c3 = NULL; - char *idp = NULL, *idp2 = NULL; - (void)arg; - - /* pre-initialization */ - tt_ptr_op(NULL, OP_EQ, - connection_or_get_by_ext_or_id("xxxxxxxxxxxxxxxxxxxx")); - - c1 = or_connection_new(CONN_TYPE_EXT_OR, AF_INET); - c2 = or_connection_new(CONN_TYPE_EXT_OR, AF_INET); - c3 = or_connection_new(CONN_TYPE_OR, AF_INET); - - tt_ptr_op(c1->ext_or_conn_id, OP_NE, NULL); - tt_ptr_op(c2->ext_or_conn_id, OP_NE, NULL); - tt_ptr_op(c3->ext_or_conn_id, OP_EQ, NULL); - - tt_ptr_op(c1, OP_EQ, connection_or_get_by_ext_or_id(c1->ext_or_conn_id)); - tt_ptr_op(c2, OP_EQ, connection_or_get_by_ext_or_id(c2->ext_or_conn_id)); - tt_ptr_op(NULL, OP_EQ, - connection_or_get_by_ext_or_id("xxxxxxxxxxxxxxxxxxxx")); - - idp = tor_memdup(c2->ext_or_conn_id, EXT_OR_CONN_ID_LEN); - - /* Give c2 a new ID. */ - connection_or_set_ext_or_identifier(c2); - tt_mem_op(idp, OP_NE, c2->ext_or_conn_id, EXT_OR_CONN_ID_LEN); - idp2 = tor_memdup(c2->ext_or_conn_id, EXT_OR_CONN_ID_LEN); - tt_assert(!tor_digest_is_zero(idp2)); - - tt_ptr_op(NULL, OP_EQ, connection_or_get_by_ext_or_id(idp)); - tt_ptr_op(c2, OP_EQ, connection_or_get_by_ext_or_id(idp2)); - - /* Now remove it. */ - connection_or_remove_from_ext_or_id_map(c2); - tt_ptr_op(NULL, OP_EQ, connection_or_get_by_ext_or_id(idp)); - tt_ptr_op(NULL, OP_EQ, connection_or_get_by_ext_or_id(idp2)); - - done: - if (c1) - connection_free_minimal(TO_CONN(c1)); - if (c2) - connection_free_minimal(TO_CONN(c2)); - if (c3) - connection_free_minimal(TO_CONN(c3)); - tor_free(idp); - tor_free(idp2); - connection_or_clear_ext_or_id_map(); -} - /* Simple connection_write_to_buf_impl_ replacement that unconditionally * writes to outbuf. */ static void @@ -581,7 +527,6 @@ test_ext_or_handshake(void *arg) }

struct testcase_t extorport_tests[] = { - { "id_map", test_ext_or_id_map, TT_FORK, NULL, NULL }, { "write_command", test_ext_or_write_command, TT_FORK, NULL, NULL }, { "init_auth", test_ext_or_init_auth, TT_FORK, NULL, NULL }, { "cookie_auth", test_ext_or_cookie_auth, TT_FORK, NULL, NULL },