From b03e8733f35b8a61cb0c7d5c68b5532db2b796a8 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Mon, 5 Dec 2005 19:15:27 +0000
Subject: [PATCH] Change how OR conns get removed from the identity map; fix
 some warnings on shutdown.

svn:r5509
---
 src/or/connection.c    |  6 ++++++
 src/or/connection_or.c | 21 +++++++++++++++++++++
 src/or/or.h            |  1 +
 3 files changed, 28 insertions(+)

diff --git a/src/or/connection.c b/src/or/connection.c
index 1766080904..9531583413 100644
--- a/src/or/connection.c
+++ b/src/or/connection.c
@@ -257,6 +257,9 @@ connection_free(connection_t *conn)
   if (connection_speaks_cells(conn)) {
     if (conn->state == OR_CONN_STATE_OPEN)
       directory_set_dirty();
+    if (!tor_digest_is_zero(conn->identity_digest)) {
+      connection_or_remove_from_identity_map(conn);
+    }
   }
   if (conn->type == CONN_TYPE_CONTROL) {
     conn->event_mask = 0;
@@ -288,6 +291,9 @@ connection_free_all(void)
       carray[i]->event_mask = 0;
   control_update_global_event_mask();
 
+  /* Unlink everything from the identity map. */
+  connection_or_clear_identity_map();
+
   for (i=0;i<n;i++)
     _connection_free(carray[i]);
 
diff --git a/src/or/connection_or.c b/src/or/connection_or.c
index a092d3c9ed..78a9996150 100644
--- a/src/or/connection_or.c
+++ b/src/or/connection_or.c
@@ -59,6 +59,27 @@ connection_or_remove_from_identity_map(connection_t *conn)
   conn->next_with_same_id = NULL;
 }
 
+/** Remove all entries from the identity-to-orconn map, and clear
+ * all identities in OR conns.*/
+void
+connection_or_clear_identity_map(void)
+{
+  int i, n;
+  connection_t **carray;
+
+  get_connection_array(&carray,&n);
+  for (i = 0; i < n; ++i) {
+    connection_t* conn = carray[i];
+    if (conn->type == CONN_TYPE_OR) {
+      memset(conn->identity_digest, 0, DIGEST_LEN);
+      conn->next_with_same_id = NULL;
+    }
+  }
+
+  digestmap_free(orconn_identity_map, NULL);
+  orconn_identity_map = NULL;
+}
+
 /** Change conn->identity_digest to digest, and add conn into
  * orconn_digest_map. */
 static void
diff --git a/src/or/or.h b/src/or/or.h
index 9812ba237d..e80ed71e11 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -1663,6 +1663,7 @@ hostname_type_t parse_extended_hostname(char *address);
 /********************************* connection_or.c ***************************/
 
 void connection_or_remove_from_identity_map(connection_t *conn);
+void connection_or_clear_identity_map(void);
 connection_t *connection_or_get_by_identity_digest(const char *digest);
 
 int connection_or_reached_eof(connection_t *conn);