define TOR_FRAGILE if you want tor to give you a core when

something goes wrong. this should only be used by people actively
tracking bugs.


svn:r3487

src/or/circuitbuild.c

@@ -764,6 +764,9 @@ static int new_route_len(double cw, uint8_t purpose, smartlist_t *routers) {
     routelen = 4;
   else {
     log_fn(LOG_WARN,"Bug: unhandled purpose %d", purpose);
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return -1;
   }
 #endif
@@ -1078,6 +1081,9 @@ choose_good_exit_server(uint8_t purpose, routerlist_t *dir,
       return r;
   }
   log_fn(LOG_WARN,"Bug: unhandled purpose %d", purpose);
+#ifdef TOR_FRAGILE
+  tor_assert(0);
+#endif
   return NULL;
 }
 

src/or/circuituse.c

@@ -699,6 +699,9 @@ circuit_launch_by_identity(uint8_t purpose, const char *exit_digest,
         default:
           log_fn(LOG_WARN,"Bug: unexpected purpose %d when cannibalizing a general circ.",
                  purpose);
+#ifdef TOR_FRAGILE
+          tor_assert(0);
+#endif
           return NULL;
       }
       return circ;

src/or/connection.c

@@ -220,8 +220,12 @@ void connection_about_to_close_connection(connection_t *conn)
   assert(conn->marked_for_close);
 
   if (conn->type == CONN_TYPE_AP || conn->type == CONN_TYPE_EXIT) {
-    if (!conn->has_sent_end)
+    if (!conn->has_sent_end) {
       log_fn(LOG_WARN,"Bug: Edge connection hasn't sent end yet?");
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
+    }
   }
 
   switch (conn->type) {
@@ -295,6 +299,9 @@ void connection_close_immediate(connection_t *conn)
   assert_connection_ok(conn,0);
   if (conn->s < 0) {
     log_fn(LOG_WARN,"Bug: Attempt to close already-closed connection.");
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return;
   }
   if (conn->outbuf_flushlen) {
@@ -319,6 +326,9 @@ _connection_mark_for_close(connection_t *conn)
 
   if (conn->marked_for_close) {
     log(LOG_WARN, "Bug: Double mark-for-close on connection.");
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return -1;
   }
 
@@ -1371,6 +1381,9 @@ static int connection_process_inbuf(connection_t *conn, int package_partial) {
       return connection_control_process_inbuf(conn);
     default:
       log_fn(LOG_WARN,"Bug: got unexpected conn type %d.", conn->type);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
 }
@@ -1403,6 +1416,9 @@ static int connection_finished_flushing(connection_t *conn) {
       return connection_control_finished_flushing(conn);
     default:
       log_fn(LOG_WARN,"Bug: got unexpected conn type %d.", conn->type);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
 }
@@ -1426,6 +1442,9 @@ static int connection_finished_connecting(connection_t *conn)
       return connection_dir_finished_connecting(conn);
     default:
       log_fn(LOG_WARN,"Bug: got unexpected conn type %d.", conn->type);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
 }
@@ -1448,6 +1467,9 @@ static int connection_reached_eof(connection_t *conn)
       return connection_control_reached_eof(conn);
     default:
       log_fn(LOG_WARN,"Bug: got unexpected conn type %d.", conn->type);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
 }

src/or/connection_edge.c

@@ -93,6 +93,9 @@ int connection_edge_process_inbuf(connection_t *conn, int package_partial) {
       return 0;
   }
   log_fn(LOG_WARN,"Bug: Got unexpected state %d. Closing.",conn->state);
+#ifdef TOR_FRAGILE
+  tor_assert(0);
+#endif
   connection_edge_end(conn, END_STREAM_REASON_MISC, conn->cpath_layer);
   connection_mark_for_close(conn);
   return -1;
@@ -131,6 +134,9 @@ connection_edge_end(connection_t *conn, char reason, crypt_path_t *cpath_layer)
 
   if (conn->has_sent_end) {
     log_fn(LOG_WARN,"Bug: Calling connection_edge_end on an already ended stream?");
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return -1;
   }
 
@@ -183,6 +189,9 @@ int connection_edge_finished_flushing(connection_t *conn) {
       return 0;
     default:
       log_fn(LOG_WARN,"BUG: called in unexpected state %d.", conn->state);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
   return 0;

src/or/connection_or.c

@@ -78,6 +78,9 @@ int connection_or_finished_flushing(connection_t *conn) {
 
   if (conn->state != OR_CONN_STATE_OPEN) {
     log_fn(LOG_WARN,"BUG: called in unexpected state %d",conn->state);
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return -1;
   }
 
@@ -210,7 +213,7 @@ connection_t *connection_or_connect(uint32_t addr, uint16_t port,
 
   if (server_mode(get_options()) && (me=router_get_my_routerinfo()) &&
       !memcmp(me->identity_digest, id_digest,DIGEST_LEN)) {
-    log_fn(LOG_WARN,"Bug: Request to connect to myself! Failing.");
+    log_fn(LOG_WARN,"Bug: Client asked me to connect to myself! Refusing.");
     return NULL;
   }
 

src/or/directory.c

@@ -1080,6 +1080,9 @@ int connection_dir_finished_flushing(connection_t *conn) {
       return 0;
     default:
       log_fn(LOG_WARN,"Bug: called in unexpected state %d.", conn->state);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       return -1;
   }
   return 0;

src/or/dns.c

@@ -118,9 +118,15 @@ static void purge_expired_resolves(uint32_t now) {
     log(LOG_DEBUG,"Forgetting old cached resolve (expires %lu)", (unsigned long)resolve->expire);
     if (resolve->state == CACHE_STATE_PENDING) {
       log_fn(LOG_WARN,"Bug: Expiring a dns resolve that's still pending. Forgot to cull it?");
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
     }
     if (resolve->pending_connections) {
       log_fn(LOG_WARN, "Closing pending connections on expiring DNS resolve!");
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       while (resolve->pending_connections) {
         pend = resolve->pending_connections;
         resolve->pending_connections = pend->next;
@@ -401,6 +407,9 @@ void dns_cancel_pending_resolve(char *address) {
   if (!resolve->pending_connections) {
     /* XXX this should never trigger, but sometimes it does */
     log_fn(LOG_WARN,"Bug: Address '%s' is pending but has no pending connections!", address);
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return;
   }
   tor_assert(resolve->pending_connections);
@@ -596,6 +605,9 @@ int connection_dns_process_inbuf(connection_t *conn) {
 
   if (conn->state != DNSWORKER_STATE_BUSY && buf_datalen(conn->inbuf)) {
     log_fn(LOG_WARN,"Bug: read data from an idle dns worker.  Please report.");
+#ifdef TOR_FRAGILE
+    tor_assert(0);
+#endif
     return 0;
   }
   if (buf_datalen(conn->inbuf) < 5) /* entire answer available? */

src/or/main.c

@@ -339,6 +339,9 @@ conn_read_callback(int fd, short event, void *_conn)
 #ifndef MS_WINDOWS
       log_fn(LOG_WARN,"Bug: unhandled error on read for %s connection (fd %d); removing",
              CONN_TYPE_TO_STRING(conn->type), conn->s);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
 #endif
       connection_mark_for_close(conn);
     }
@@ -366,6 +369,9 @@ static void conn_write_callback(int fd, short events, void *_conn)
       /* this connection is broken. remove it. */
       log_fn(LOG_WARN,"Bug: unhandled error on write for %s connection (fd %d); removing",
              CONN_TYPE_TO_STRING(conn->type), conn->s);
+#ifdef TOR_FRAGILE
+      tor_assert(0);
+#endif
       conn->has_sent_end = 1; /* otherwise we cry wolf about duplicate close */
       /* XXX do we need a close-immediate here, so we don't try to flush? */
       connection_mark_for_close(conn);

src/or/or.h

@@ -128,6 +128,10 @@
 #include "../common/util.h"
 #include "../common/torgzip.h"
 
+/** Define this if you want Tor to crash when any problem comes up,
+ * so you can get a coredump and track things down. */
+#undef TOR_FRAGILE
+
 /** Upper bound on maximum simultaneous connections; can be lowered by
  * config file. */
 #define MAXCONNECTIONS 15000