Hoo man has submitted this change and it was merged.

Change subject: (bug 18057) Add conflict detection for status
......................................................................


(bug 18057) Add conflict detection for status

Adds a hash of the current locked and hidden values for a user in the
form submission. If another admin has updated the user's status, then
the conflict will be detected and the operation aborted.

The hash can be optionally passed with an api request, to optionally
perform the conflict detection. The MD5 should be easy to calculate in
any code using the api.

Change-Id: Ia985e152ccabb77454f0eb87bbb78f0e220d5674
---
M CentralAuth.i18n.php
M CentralAuthUser.php
M api/ApiSetGlobalAccountStatus.php
M specials/SpecialCentralAuth.php
4 files changed, 29 insertions(+), 1 deletion(-)

Approvals:
  Hoo man: Verified; Looks good to me, approved



diff --git a/CentralAuth.i18n.php b/CentralAuth.i18n.php
index a554ad1..cb6bc1c 100644
--- a/CentralAuth.i18n.php
+++ b/CentralAuth.i18n.php
@@ -186,6 +186,7 @@
        'centralauth-admin-nonexistent'        => 'There is no global account 
for "<nowiki>$1</nowiki>"',
        'centralauth-admin-delete-nonexistent' => 'Error: the global account 
"<nowiki>$1</nowiki>" does not exist.',
        'centralauth-token-mismatch'           => 'Sorry, we could not process 
your form submission due to a loss of session data.',
+       'centralauth-state-mismatch'           => 'Error: An edit conflict for 
this user was detected. Please verify your change and try again.',
        'centralauth-admin-reason'             => 'Reason:',
        'centralauth-admin-reason-other'       => 'Other/additional reason:',
        'centralauth-admin-unhide-nonexistent' => 'Error: the global account 
"<nowiki>$1</nowiki>" does not exist.',
@@ -614,6 +615,7 @@
 *{{msg-mw|Centralauth-admin-status-hidden-list}}
 *{{msg-mw|Centralauth-admin-status-hidden-oversight}}',
        'centralauth-admin-not-authorized' => "Error message when the user 
doesn't have permission",
+       'centralauth-state-mismatch' => 'Error message when another admin has 
updated the user, and an edit conflict was detected',
        'centralauth-listusers-locked' => "This message is used as user's info:
 *{{msg-mw|centralauth-listusers-locked}}
 *{{msg-mw|centralauth-listusers-attached}}
diff --git a/CentralAuthUser.php b/CentralAuthUser.php
index e07f3d2..f6a1dd7 100644
--- a/CentralAuthUser.php
+++ b/CentralAuthUser.php
@@ -2354,4 +2354,16 @@
        public function attachedOn( $wiki ) {
                return $this->exists() && in_array( $wiki, 
$this->mAttachedArray );
        }
+
+       /**
+        * Get a hash representing the user/locked/hidden state of this user,
+        * used to check for edit conflicts
+        *
+        * @param $recache - force a reload of the user from the database
+        * @return String
+        */
+       public function getStateHash( $recache = false ) {
+               $this->loadState( $recache );
+               return md5( $this->mGlobalId . ':' . $this->mName . ':' . 
$this->mHidden . ':' . (int) $this->mLocked );
+       }
 }
diff --git a/api/ApiSetGlobalAccountStatus.php 
b/api/ApiSetGlobalAccountStatus.php
index 38ce990..0519603 100644
--- a/api/ApiSetGlobalAccountStatus.php
+++ b/api/ApiSetGlobalAccountStatus.php
@@ -45,8 +45,13 @@
                $setLocked = $this->getParameter( 'locked' ) == 'lock';
                $setHidden = $this->getParameter( 'hidden' );
                $reason = $this->getParameter( 'reason' );
+               $stateCheck = $this->getParameter( 'statecheck' );
                $isLocked = $globalUser->isLocked();
                $oldHiddenLevel = $globalUser->getHiddenLevel();
+
+               if ( $stateCheck && $stateCheck !== $globalUser->getStateHash( 
true ) ) {
+                       $this->dieUsage( "Edit conflict detected, Aborting." );
+               }
 
                if (
                        $setHidden !== null && // hidden is set
@@ -170,6 +175,10 @@
                                ApiBase::PARAM_TYPE => 'string',
                                ApiBase::PARAM_REQUIRED => true
                        ),
+                       'statecheck' => array(
+                               ApiBase::PARAM_TYPE => 'string',
+                               ApiBase::PARAM_REQUIRED => false
+                       ),
                );
        }
 
@@ -179,7 +188,8 @@
                        'locked' => 'Change whether this user is locked or 
not.',
                        'hidden' => 'Change whether this user is not hidden, 
hidden from lists, or suppressed.',
                        'reason' => "Reason for changing the user's status.",
-                       'token' => 'Your edit token.'
+                       'token' => 'Your edit token.',
+                       'statecheck' => 'Optional MD5 of the expected current 
<username>:<hidden>:<locked>, to detect edit conflicts. Set <locked> to 1 for 
locked, 0 for unlocked.'
                );
        }
 
diff --git a/specials/SpecialCentralAuth.php b/specials/SpecialCentralAuth.php
index 6ced080..279de73 100644
--- a/specials/SpecialCentralAuth.php
+++ b/specials/SpecialCentralAuth.php
@@ -97,6 +97,7 @@
        function doSubmit() {
                $deleted = false;
                $globalUser = $this->mGlobalUser;
+               $stateCheck = ( $this->getRequest()->getVal( 'wpUserState' ) 
=== $globalUser->getStateHash( true ) );
 
                if ( !$this->getUser()->matchEditToken( 
$this->getRequest()->getVal( 'wpEditToken' ) ) ) {
                        $this->showError( 'centralauth-token-mismatch' );
@@ -118,6 +119,8 @@
                                $deleted = true;
                                $this->logAction( 'delete', $this->mUserName, 
$this->getRequest()->getVal( 'reason' ) );
                        }
+               } elseif ( $this->mMethod == 'set-status' && !$stateCheck ) {
+                       $this->showError( 'centralauth-state-mismatch' );
                } elseif ( $this->mMethod == 'set-status' && $this->mCanLock ) {
                        $setLocked = $this->getRequest()->getBool( 
'wpStatusLocked' );
                        $setHidden = $this->getRequest()->getVal( 
'wpStatusHidden' );
@@ -605,6 +608,7 @@
                $form .= Xml::fieldset( $this->msg( 'centralauth-admin-status' 
)->text() );
                $form .= Html::hidden( 'wpMethod', 'set-status' );
                $form .= Html::hidden( 'wpEditToken', 
$this->getUser()->getEditToken() );
+               $form .= Html::hidden( 'wpUserState', 
$this->mGlobalUser->getStateHash( false ) );
                $form .= $this->msg( 'centralauth-admin-status-intro' 
)->parseAsBlock();
 
                // Radio buttons

-- 
To view, visit https://gerrit.wikimedia.org/r/50034
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: merged
Gerrit-Change-Id: Ia985e152ccabb77454f0eb87bbb78f0e220d5674
Gerrit-PatchSet: 4
Gerrit-Project: mediawiki/extensions/CentralAuth
Gerrit-Branch: master
Gerrit-Owner: CSteipp <cste...@wikimedia.org>
Gerrit-Reviewer: Hoo man <h...@online.de>
Gerrit-Reviewer: Siebrand <siebr...@wikimedia.org>
Gerrit-Reviewer: jenkins-bot

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