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hs-v2: Warn of v2 obsolete if configured
For a user using "HiddenServiceVersion 2", a log warning is emitted indicating that v2 is now obsolete instead of a confusing message saying that the version is not supported. Also, if an introduction point gets a legacy (v2) ESTABLISH_INTRO, we'll simply close the circuit without emitting a protocol warning log onto the relay. Related to #40266 Signed-off-by: David Goulet <dgoulet@torproject.org>
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@ -436,6 +436,12 @@ config_generic_service(const hs_opts_t *hs_opts,
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/* Protocol version for the service. */
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if (hs_opts->HiddenServiceVersion == -1) {
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/* No value was set; stay with the default. */
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} else if (hs_opts->HiddenServiceVersion == 2) {
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log_warn(LD_CONFIG, "Onion services version 2 are obsolete. Please see "
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"https://blog.torproject.org/v2-deprecation-timeline "
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"for more details and for instructions on how to "
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"transition to version 3.");
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goto err;
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} else if (CHECK_OOB(hs_opts, HiddenServiceVersion,
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HS_VERSION_MIN, HS_VERSION_MAX)) {
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goto err;
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@ -512,6 +512,11 @@ hs_intro_received_establish_intro(or_circuit_t *circ, const uint8_t *request,
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* ESTABLISH_INTRO and pass it to the appropriate cell handler */
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const uint8_t first_byte = request[0];
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switch (first_byte) {
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case TRUNNEL_HS_INTRO_AUTH_KEY_TYPE_LEGACY0:
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case TRUNNEL_HS_INTRO_AUTH_KEY_TYPE_LEGACY1:
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/* Likely version 2 onion service which is now obsolete. Avoid a
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* protocol warning considering they still exists on the network. */
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goto err;
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case TRUNNEL_HS_INTRO_AUTH_KEY_TYPE_ED25519:
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return handle_establish_intro(circ, request, request_len);
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default:
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