From f68559c086b74e092f72b72641d3a1a043cfa636 Mon Sep 17 00:00:00 2001
From: Steve Holme <steve_holme@hotmail.com>
Date: Sun, 27 Oct 2013 22:20:18 +0000
Subject: email: Added support for cancelling NTLM authentication

---
 lib/imap.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

(limited to 'lib/imap.c')

diff --git a/lib/imap.c b/lib/imap.c
index 9fa737b39..c11e43bd6 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -1290,24 +1290,32 @@ static CURLcode imap_state_auth_ntlm_type2msg_resp(struct connectdata *conn,
     /* Get the challenge message */
     imap_get_message(data->state.buffer, &type2msg);
 
-    /* Create the type-3 message */
-    result = Curl_sasl_create_ntlm_type3_message(data, type2msg, conn->user,
-                                                 conn->passwd, &conn->ntlm,
-                                                 &type3msg, &len);
+    /* Decode the type-2 message */
+    result = Curl_sasl_decode_ntlm_type2_message(data, type2msg, &conn->ntlm);
+    if(result) {
+      /* Send the cancellation */
+      result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", "*");
 
-    /* Send the message */
-    if(!result) {
-      if(type3msg) {
+      if(!result)
+        state(conn, IMAP_AUTHENTICATE_CANCEL);
+    }
+    else {
+      /* Create the type-3 message */
+      result = Curl_sasl_create_ntlm_type3_message(data, conn->user,
+                                                   conn->passwd, &conn->ntlm,
+                                                   &type3msg, &len);
+      if(!result && type3msg) {
+        /* Send the message */
         result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", type3msg);
 
         if(!result)
           state(conn, IMAP_AUTHENTICATE_FINAL);
       }
-
-      Curl_safefree(type3msg);
     }
   }
 
+  Curl_safefree(type3msg);
+
   return result;
 }
 #endif
-- 
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