From ea9c53fe741df01e6b75a4f97964f33b88e05125 Mon Sep 17 00:00:00 2001
From: Alexandra Ellwood <lxs@mit.edu>
Date: Fri, 31 Oct 2008 17:11:47 +0000
Subject: [PATCH] Avoid duplicate identical dialogs in KIM

Added KIM_DUPLICATE_UI_REQUEST_ERR error so UI can indicate it cancelled
its dialog due to getting multiple identical dialogs at the same time.

ticket: new

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@20942 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/kim/lib/kim_credential.c      | 31 +++++++++++++++++++++++++++----
 src/kim/lib/kim_errors.et         |  1 +
 src/kim/lib/kim_identity.c        |  5 ++++-
 src/kim/lib/kim_selection_hints.c |  3 ++-
 4 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/src/kim/lib/kim_credential.c b/src/kim/lib/kim_credential.c
index 7b49c42dc..8d2c1ee60 100644
--- a/src/kim/lib/kim_credential.c
+++ b/src/kim/lib/kim_credential.c
@@ -309,7 +309,11 @@ kim_error kim_credential_create_new_with_password (kim_credential *out_credentia
                 
                 /* reenter enter_identity so just forget this identity
                  * even if we got an error */
-                if (err == KIM_USER_CANCELED_ERR) { err = KIM_NO_ERROR; }
+                if (err == KIM_USER_CANCELED_ERR || 
+                    err == KIM_DUPLICATE_UI_REQUEST_ERR) { 
+                    err = KIM_NO_ERROR; 
+                }
+                
                 kim_identity_free (&identity);
             }
             
@@ -397,12 +401,31 @@ kim_error kim_credential_create_new_with_password (kim_credential *out_credentia
                 kim_string_free (&new_password);
             }
             
-            if (!err || err == KIM_USER_CANCELED_ERR) {
+            if (!err || err == KIM_USER_CANCELED_ERR || 
+                        err == KIM_DUPLICATE_UI_REQUEST_ERR) {
                 /* new creds obtained or the user gave up */
                 done_with_credentials = 1;
                 
-                /* remember identity and options if the user wanted to */
-                kim_credential_remember_prefs (identity, options);
+                if (!err) {
+                    /* remember identity and options if the user wanted to */
+                    kim_credential_remember_prefs (identity, options);
+                }
+                
+                if (err == KIM_DUPLICATE_UI_REQUEST_ERR) { 
+                    kim_ccache ccache = NULL;
+                    /* credential for this identity was obtained, but via a different 
+                     * dialog.  Find it.  */
+                    
+                    err = kim_ccache_create_from_client_identity (&ccache, 
+                                                                  identity);
+                    
+                    if (!err) {
+                        err = kim_ccache_get_valid_credential (ccache, 
+                                                               &credential);
+                    }
+                    
+                    kim_ccache_free (&ccache);
+                }                
                 
             } else if (prompt_count) {
                 /* User was prompted and might have entered bad info 
diff --git a/src/kim/lib/kim_errors.et b/src/kim/lib/kim_errors.et
index 415751dc5..895d05a07 100644
--- a/src/kim/lib/kim_errors.et
+++ b/src/kim/lib/kim_errors.et
@@ -52,6 +52,7 @@ error_code KIM_CAPS_LOCK_ERR,                     "Password Incorrect (check you
 error_code KIM_USER_CANCELED_ERR,                 "The user cancelled the operation"
 error_code KIM_NO_SERVER_ERR,                     "KerberosAgent is not responding"
 error_code KIM_NO_UI_ERR,                         "Unable to display a user interface from this environment"
+error_code KIM_DUPLICATE_UI_REQUEST_ERR,          "UI just handled this request."
 
 index 100
 # Preferences Errors
diff --git a/src/kim/lib/kim_identity.c b/src/kim/lib/kim_identity.c
index 6592d09c8..2a1ad5e3f 100644
--- a/src/kim/lib/kim_identity.c
+++ b/src/kim/lib/kim_identity.c
@@ -707,7 +707,8 @@ kim_error kim_identity_change_password_common (kim_identity    in_identity,
                                        rejected_message, 
                                        rejected_description);
             
-        } else if (err && err != KIM_USER_CANCELED_ERR) {
+        } else if (err && err != KIM_USER_CANCELED_ERR && 
+                          err != KIM_DUPLICATE_UI_REQUEST_ERR) {
             /* New creds failed, report error to user.
              * Overwrite error so we loop and let the user try again.
              * The user always gets prompted so we always loop. */
@@ -738,6 +739,8 @@ kim_error kim_identity_change_password_common (kim_identity    in_identity,
                 
                 kim_string_free (&saved_password);
             }
+
+            if (err == KIM_DUPLICATE_UI_REQUEST_ERR) { err = KIM_NO_ERROR; }
         }
         
         kim_string_free (&rejected_message);
diff --git a/src/kim/lib/kim_selection_hints.c b/src/kim/lib/kim_selection_hints.c
index 797f70bd5..2b5742830 100644
--- a/src/kim/lib/kim_selection_hints.c
+++ b/src/kim/lib/kim_selection_hints.c
@@ -480,7 +480,8 @@ kim_error kim_selection_hints_get_identity (kim_selection_hints  in_selection_hi
                 
                 /* reenter select_identity so just forget this identity
                  * even if we got an error */
-                if (err == KIM_USER_CANCELED_ERR) { err = KIM_NO_ERROR; }
+                if (err == KIM_USER_CANCELED_ERR || 
+                    err == KIM_DUPLICATE_UI_REQUEST_ERR) { err = KIM_NO_ERROR; }
                 kim_identity_free (&identity);
             }
                 
-- 
2.26.2