Fix bug 763. When a hidden service is giving up on an introduction point candidate that was not included in the last published rendezvous descriptor, don't reschedule publication of the next descriptor.

svn:r15825

ChangeLog

@@ -16,6 +16,10 @@ Changes in version 0.2.1.3-alpha - 2008-07-xx
     - Stop using __attribute__((nonnull)) with GCC: it can give us useful
       warnings (occasionally), but it can also cause the compiler to
       eliminate error-checking code.  Suggested by Peter Gutmann.
+    - When a hidden service is giving up on an introduction point candidate
+      that was not included in the last published rendezvous descriptor,
+      don't reschedule publication of the next descriptor. Fixes bug 763.
+      Bugfix on 0.0.9.3.
 
 
 Changes in version 0.2.0.29-rc - 2008-07-08

src/common/tortls.c

@@ -564,7 +564,7 @@ tor_tls_context_new(crypto_pk_env_t *identity, unsigned int key_lifetime)
   SSL_CTX_set_options(result->ctx, SSL_OP_NO_SSLv2);
 #endif
   SSL_CTX_set_options(result->ctx, SSL_OP_SINGLE_DH_USE);
-  
+
 #ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
   SSL_CTX_set_options(result->ctx,
                       SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);

src/or/rendservice.c

@@ -1256,14 +1256,31 @@ rend_services_introduce(void)
     for (j=0; j < smartlist_len(service->intro_nodes); ++j) {
       intro = smartlist_get(service->intro_nodes, j);
       router = router_get_by_digest(intro->extend_info->identity_digest);
-      if (!router || !find_intro_circuit(intro, service->pk_digest,
-                                         service->descriptor_version)) {
+      if (!router) {
+        log_warn(LD_BUG, "We have picked router %s as introduction point, "
+                         "but we don't have its router descriptor. Skipping.",
+                 intro->extend_info->nickname);
+        continue;
+      }
+      if (!find_intro_circuit(intro, service->pk_digest,
+                              service->descriptor_version)) {
         log_info(LD_REND,"Giving up on %s as intro point for %s.",
                  intro->extend_info->nickname, service->service_id);
+        if (service->desc) {
+          SMARTLIST_FOREACH(service->desc->intro_nodes, rend_intro_point_t *,
+                            dintro, {
+            if (!memcmp(dintro->extend_info->identity_digest,
+                intro->extend_info->identity_digest, DIGEST_LEN)) {
+              log_info(LD_REND, "The intro point we are giving up on was "
+                                "included in the last published descriptor. "
+                                "Marking current descriptor as dirty.");
+              service->desc_is_dirty = now;
+            }
+          });
+        }
         rend_intro_point_free(intro);
         smartlist_del(service->intro_nodes,j--);
         changed = 1;
-        service->desc_is_dirty = now;
       }
       smartlist_add(intro_routers, router);
     }