Enable user backends to provide avatar images

3 files changed, 36 insertions, 7 deletions

diff --git a/lib/private/user.php b/lib/private/user.php
index f15fdf1dbbc..d4be8eb9bd4 100644
--- a/lib/private/user.php
+++ b/lib/private/user.php
@@ -413,6 +413,22 @@ class OC_User {
 	}
 
 	/**
+	 * @brief Check whether user can change his avatar
+	 * @param string $uid The username
+	 * @return bool
+	 *
+	 * Check whether a specified user can change his avatar
+	 */
+	public static function canUserChangeAvatar($uid) {
+		$user = self::getManager()->get($uid);
+		if ($user) {
+			return $user->canChangeAvatar();
+		} else {
+			return false;
+		}
+	}
+
+	/**
 	 * @brief Check whether user can change his password
 	 * @param string $uid The username
 	 * @return bool
diff --git a/lib/private/user/backend.php b/lib/private/user/backend.php
index e9be08e429c..02c93d13bdf 100644
--- a/lib/private/user/backend.php
+++ b/lib/private/user/backend.php
@@ -31,13 +31,13 @@ define('OC_USER_BACKEND_NOT_IMPLEMENTED',   -501);
 /**
  * actions that user backends can define
  */
-define('OC_USER_BACKEND_CREATE_USER',       0x000001);
-define('OC_USER_BACKEND_SET_PASSWORD',      0x000010);
-define('OC_USER_BACKEND_CHECK_PASSWORD',    0x000100);
-define('OC_USER_BACKEND_GET_HOME',			0x001000);
-define('OC_USER_BACKEND_GET_DISPLAYNAME',	0x010000);
-define('OC_USER_BACKEND_SET_DISPLAYNAME',	0x100000);
-
+define('OC_USER_BACKEND_CREATE_USER',       0x0000001);
+define('OC_USER_BACKEND_SET_PASSWORD',      0x0000010);
+define('OC_USER_BACKEND_CHECK_PASSWORD',    0x0000100);
+define('OC_USER_BACKEND_GET_HOME',			0x0001000);
+define('OC_USER_BACKEND_GET_DISPLAYNAME',	0x0010000);
+define('OC_USER_BACKEND_SET_DISPLAYNAME',	0x0100000);
+define('OC_USER_BACKEND_PROVIDE_AVATAR',	0x1000000);
 
 /**
  * Abstract base class for user management. Provides methods for querying backend
@@ -54,6 +54,7 @@ abstract class OC_User_Backend implements OC_User_Interface {
 		OC_USER_BACKEND_GET_HOME => 'getHome',
 		OC_USER_BACKEND_GET_DISPLAYNAME => 'getDisplayName',
 		OC_USER_BACKEND_SET_DISPLAYNAME => 'setDisplayName',
+		OC_USER_BACKEND_PROVIDE_AVATAR => 'canChangeAvatar',
 	);
 
 	/**
diff --git a/lib/private/user/user.php b/lib/private/user/user.php
index e5f842944f1..e773473ec41 100644
--- a/lib/private/user/user.php
+++ b/lib/private/user/user.php
@@ -140,6 +140,18 @@ class User {
 	}
 
 	/**
+	 * check if the backend allows the user to change his avatar on Personal page
+	 *
+	 * @return bool
+	 */
+	public function canChangeAvatar() {
+		if($this->backend->implementsActions(\OC_USER_BACKEND_PROVIDE_AVATAR)) {
+			return $this->backend->canChangeAvatar($this->uid);
+		}
+		return true;
+	}
+
+	/**
 	 * check if the backend supports changing passwords
 	 *
 	 * @return bool