/** Initialize the common elements in a circuit_t, and add it to the global
* list. */
static void
init_circuit_base(circuit_t *circ)
{
circ->timestamp_created = time(NULL);
circ->package_window = circuit_initial_package_window();
circ->deliver_window = CIRCWINDOW_START;
circuit_add(circ);
}
/** Initialize the common elements in a circuit_t, and add it to the global
* list. */
static void
init_circuit_base(circuit_t *circ)
{
tor_gettimeofday(&circ->timestamp_created);
circ->package_window = circuit_initial_package_window();
circ->deliver_window = CIRCWINDOW_START;
/* Initialize the cell_ewma_t structure */
circ->n_cell_ewma.last_adjusted_tick = cell_ewma_get_tick();
circ->n_cell_ewma.cell_count = 0.0;
circ->n_cell_ewma.heap_index = -1;
circ->n_cell_ewma.is_for_p_conn = 0;
circuit_add(circ);
}
/* Helper: Return a newly allocated and initialized origin circuit with
* purpose and flags. A default HS identifier is set to an ed25519
* authentication key for introduction point. */
static origin_circuit_t *
helper_create_origin_circuit(int purpose, int flags)
{
origin_circuit_t *circ = NULL;
circ = origin_circuit_init(purpose, flags);
tor_assert(circ);
circ->cpath = tor_malloc_zero(sizeof(crypt_path_t));
circ->cpath->magic = CRYPT_PATH_MAGIC;
circ->cpath->state = CPATH_STATE_OPEN;
circ->cpath->package_window = circuit_initial_package_window();
circ->cpath->deliver_window = CIRCWINDOW_START;
circ->cpath->prev = circ->cpath;
/* Create a default HS identifier. */
circ->hs_ident = tor_malloc_zero(sizeof(hs_ident_circuit_t));
return circ;
}
/* Append the final <b>hop</b> to the cpath of the rend <b>circ</b>, and mark
* <b>circ</b> ready for use to transfer HS relay cells. */
static void
finalize_rend_circuit(origin_circuit_t *circ, crypt_path_t *hop,
int is_service_side)
{
tor_assert(circ);
tor_assert(hop);
/* Notify the circuit state machine that we are splicing this circuit */
int new_circ_purpose = is_service_side ?
CIRCUIT_PURPOSE_S_REND_JOINED : CIRCUIT_PURPOSE_C_REND_JOINED;
circuit_change_purpose(TO_CIRCUIT(circ), new_circ_purpose);
/* All is well. Extend the circuit. */
hop->state = CPATH_STATE_OPEN;
/* Set the windows to default. */
hop->package_window = circuit_initial_package_window();
hop->deliver_window = CIRCWINDOW_START;
/* Now that this circuit has finished connecting to its destination,
* make sure circuit_get_open_circ_or_launch is willing to return it
* so we can actually use it. */
circ->hs_circ_has_timed_out = 0;
/* Append the hop to the cpath of this circuit */
onion_append_to_cpath(&circ->cpath, hop);
/* In legacy code, 'pending_final_cpath' points to the final hop we just
* appended to the cpath. We set the original pointer to NULL so that we
* don't double free it. */
if (circ->build_state) {
circ->build_state->pending_final_cpath = NULL;
}
/* Finally, mark circuit as ready to be used for client streams */
if (!is_service_side) {
circuit_try_attaching_streams(circ);
}
}
