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Bug 28780: Add purpose for keeping padding circuits open
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@ -823,6 +823,8 @@ circuit_purpose_to_controller_string(uint8_t purpose)
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return "PATH_BIAS_TESTING";
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case CIRCUIT_PURPOSE_HS_VANGUARDS:
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return "HS_VANGUARDS";
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case CIRCUIT_PURPOSE_C_CIRCUIT_PADDING:
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return "CIRCUIT_PADDING";
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default:
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tor_snprintf(buf, sizeof(buf), "UNKNOWN_%d", (int)purpose);
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@ -852,6 +854,7 @@ circuit_purpose_to_controller_hs_state_string(uint8_t purpose)
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case CIRCUIT_PURPOSE_CONTROLLER:
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case CIRCUIT_PURPOSE_PATH_BIAS_TESTING:
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case CIRCUIT_PURPOSE_HS_VANGUARDS:
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case CIRCUIT_PURPOSE_C_CIRCUIT_PADDING:
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return NULL;
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case CIRCUIT_PURPOSE_INTRO_POINT:
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@ -952,6 +955,9 @@ circuit_purpose_to_string(uint8_t purpose)
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case CIRCUIT_PURPOSE_HS_VANGUARDS:
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return "Hidden service: Pre-built vanguard circuit";
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case CIRCUIT_PURPOSE_C_CIRCUIT_PADDING:
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return "Circuit kept open for padding";
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default:
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tor_snprintf(buf, sizeof(buf), "UNKNOWN_%d", (int)purpose);
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return buf;
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@ -92,31 +92,33 @@
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#define CIRCUIT_PURPOSE_C_HS_MAX_ 13
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/** This circuit is used for build time measurement only */
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#define CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT 14
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#define CIRCUIT_PURPOSE_C_MAX_ 14
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/** This circuit is being held open by circuit padding */
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#define CIRCUIT_PURPOSE_C_CIRCUIT_PADDING 15
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#define CIRCUIT_PURPOSE_C_MAX_ 15
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#define CIRCUIT_PURPOSE_S_HS_MIN_ 15
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#define CIRCUIT_PURPOSE_S_HS_MIN_ 16
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/** Hidden-service-side circuit purpose: at the service, waiting for
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* introductions. */
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#define CIRCUIT_PURPOSE_S_ESTABLISH_INTRO 15
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#define CIRCUIT_PURPOSE_S_ESTABLISH_INTRO 16
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/** Hidden-service-side circuit purpose: at the service, successfully
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* established intro. */
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#define CIRCUIT_PURPOSE_S_INTRO 16
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#define CIRCUIT_PURPOSE_S_INTRO 17
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/** Hidden-service-side circuit purpose: at the service, connecting to rend
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* point. */
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#define CIRCUIT_PURPOSE_S_CONNECT_REND 17
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#define CIRCUIT_PURPOSE_S_CONNECT_REND 18
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/** Hidden-service-side circuit purpose: at the service, rendezvous
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* established. */
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#define CIRCUIT_PURPOSE_S_REND_JOINED 18
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#define CIRCUIT_PURPOSE_S_REND_JOINED 19
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/** This circuit is used for uploading hsdirs */
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#define CIRCUIT_PURPOSE_S_HSDIR_POST 19
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#define CIRCUIT_PURPOSE_S_HS_MAX_ 19
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#define CIRCUIT_PURPOSE_S_HSDIR_POST 20
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#define CIRCUIT_PURPOSE_S_HS_MAX_ 20
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/** A testing circuit; not meant to be used for actual traffic. */
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#define CIRCUIT_PURPOSE_TESTING 20
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#define CIRCUIT_PURPOSE_TESTING 21
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/** A controller made this circuit and Tor should not use it. */
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#define CIRCUIT_PURPOSE_CONTROLLER 21
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#define CIRCUIT_PURPOSE_CONTROLLER 22
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/** This circuit is used for path bias probing only */
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#define CIRCUIT_PURPOSE_PATH_BIAS_TESTING 22
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#define CIRCUIT_PURPOSE_PATH_BIAS_TESTING 23
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/** This circuit is used for vanguards/restricted paths.
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*
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@ -124,9 +126,9 @@
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* on-demand. When an HS operation needs to take place (e.g. connect to an
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* intro point), these circuits are then cannibalized and repurposed to the
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* actual needed HS purpose. */
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#define CIRCUIT_PURPOSE_HS_VANGUARDS 23
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#define CIRCUIT_PURPOSE_HS_VANGUARDS 24
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#define CIRCUIT_PURPOSE_MAX_ 23
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#define CIRCUIT_PURPOSE_MAX_ 24
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/** A catch-all for unrecognized purposes. Currently we don't expect
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* to make or see any circuits with this purpose. */
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#define CIRCUIT_PURPOSE_UNKNOWN 255
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@ -1514,6 +1514,7 @@ circuit_expire_old_circuits_clientside(void)
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circ->purpose == CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT ||
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circ->purpose == CIRCUIT_PURPOSE_S_ESTABLISH_INTRO ||
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circ->purpose == CIRCUIT_PURPOSE_TESTING ||
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circ->purpose == CIRCUIT_PURPOSE_C_CIRCUIT_PADDING ||
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(circ->purpose >= CIRCUIT_PURPOSE_C_INTRODUCING &&
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circ->purpose <= CIRCUIT_PURPOSE_C_REND_READY_INTRO_ACKED) ||
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circ->purpose == CIRCUIT_PURPOSE_S_CONNECT_REND) {
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