[tor-commits] [tor/master] Fix bug 4367: correctly detect auth_challenge cells we can't use

[nickm@xxxxxxxxxxxxxx]

commit 88c4b425bd49d4cde52fdce7eeb65bcf2304d0f6
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Thu Nov 3 11:52:35 2011 -0400

    Fix bug 4367: correctly detect auth_challenge cells we can't use
    
    Found by frosty_un, bugfix on 0.2.3.6-alpha, fix suggested by arma.
---
 changes/bug4367  |    5 +++++
 src/or/command.c |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/changes/bug4367 b/changes/bug4367
new file mode 100644
index 0000000..77236d0
--- /dev/null
+++ b/changes/bug4367
@@ -0,0 +1,5 @@
+  o Minor bugfixes:
+    - Successfully detect AUTH_CHALLENGE cells with no recognized
+      authentication type listed. Fixes bug 4367; bugfix on 0.2.3.6-alpha.
+      Found by frosty_un.
+
diff --git a/src/or/command.c b/src/or/command.c
index c02d353..6eb261c 100644
--- a/src/or/command.c
+++ b/src/or/command.c
@@ -1100,7 +1100,7 @@ command_process_auth_challenge_cell(var_cell_t *cell, or_connection_t *conn)
 
   conn->handshake_state->received_auth_challenge = 1;
 
-  if (use_type && public_server_mode(get_options())) {
+  if (use_type >= 0 && public_server_mode(get_options())) {
     log_info(LD_OR, "Got an AUTH_CHALLENGE cell from %s:%d: Sending "
              "authentication",
              safe_str(conn->_base.address), conn->_base.port);



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