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Refactor legacy code to support hs_ident along with rend_data.
The legacy HS circuit code uses rend_data to match between circuits and streams. We refactor some of that code so that it understands hs_ident as well which is used for prop224.
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@ -42,6 +42,7 @@
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#include "control.h"
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#include "entrynodes.h"
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#include "hs_common.h"
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#include "hs_ident.h"
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#include "nodelist.h"
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#include "networkstatus.h"
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#include "policies.h"
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@ -55,6 +56,36 @@
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static void circuit_expire_old_circuits_clientside(void);
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static void circuit_increment_failure_count(void);
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/** Check whether the hidden service destination of the stream at
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* <b>edge_conn</b> is the same as the destination of the circuit at
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* <b>origin_circ</b>. */
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static int
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circuit_matches_with_rend_stream(const edge_connection_t *edge_conn,
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const origin_circuit_t *origin_circ)
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{
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/* Check if this is a v2 rendezvous circ/stream */
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if ((edge_conn->rend_data && !origin_circ->rend_data) ||
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(!edge_conn->rend_data && origin_circ->rend_data) ||
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(edge_conn->rend_data && origin_circ->rend_data &&
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rend_cmp_service_ids(rend_data_get_address(edge_conn->rend_data),
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rend_data_get_address(origin_circ->rend_data)))) {
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/* this circ is not for this conn */
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return 0;
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}
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/* Check if this is a v3 rendezvous circ/stream */
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if ((edge_conn->hs_ident && !origin_circ->hs_ident) ||
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(!edge_conn->hs_ident && origin_circ->hs_ident) ||
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(edge_conn->hs_ident && origin_circ->hs_ident &&
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!ed25519_pubkey_eq(&edge_conn->hs_ident->identity_pk,
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&origin_circ->hs_ident->identity_pk))) {
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/* this circ is not for this conn */
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return 0;
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}
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return 1;
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}
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/** Return 1 if <b>circ</b> could be returned by circuit_get_best().
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* Else return 0.
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*/
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@ -169,14 +200,9 @@ circuit_is_acceptable(const origin_circuit_t *origin_circ,
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/* can't exit from this router */
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return 0;
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}
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} else { /* not general */
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} else { /* not general: this might be a rend circuit */
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const edge_connection_t *edge_conn = ENTRY_TO_EDGE_CONN(conn);
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if ((edge_conn->rend_data && !origin_circ->rend_data) ||
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(!edge_conn->rend_data && origin_circ->rend_data) ||
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(edge_conn->rend_data && origin_circ->rend_data &&
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rend_cmp_service_ids(rend_data_get_address(edge_conn->rend_data),
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rend_data_get_address(origin_circ->rend_data)))) {
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/* this circ is not for this conn */
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if (!circuit_matches_with_rend_stream(edge_conn, origin_circ)) {
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return 0;
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}
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}
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@ -3566,8 +3566,14 @@ int
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connection_edge_is_rendezvous_stream(const edge_connection_t *conn)
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{
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tor_assert(conn);
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if (conn->rend_data)
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if (BUG(conn->rend_data && conn->hs_ident)) {
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log_warn(LD_BUG, "Connection has both rend_data and hs_ident...");
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}
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if (conn->rend_data || conn->hs_ident) {
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return 1;
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}
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return 0;
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}
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