Index: enrol/manual/unenroluser.php
===================================================================
RCS file: /cvsroot/moodle/moodle/enrol/manual/Attic/unenroluser.php,v
retrieving revision 1.1
diff -u -r1.1 unenroluser.php
--- enrol/manual/unenroluser.php	27 Apr 2011 10:16:53 -0000	1.1
+++ enrol/manual/unenroluser.php	25 Mar 2012 15:54:30 -0000
@@ -75,13 +75,33 @@
     print_error('erroreditenrolment', 'enrol');
 }
 
+
+//$sql = "SELECT rc.permission FROM {role_capabilities} rc WHERE rc. "
+$haspermission=1;
+if($USER->id==$user->id){
+    $haspermission=0;
+    $sql= "SELECT ra.* FROM {role_assignments} ra, {context} c WHERE ra.contextid=c.id AND c.instanceid=".$course->id." AND ra.userid=".$USER->id;
+    $res = $DB->get_records_sql($sql);
+
+    foreach($res as $ra){
+        $params = array('capability' => 'enrol/authorize:unenrolself');
+        $sql="SELECT rc.* FROM {role_capabilities} rc WHERE rc.roleid=".$ra->roleid." AND rc.capability=:capability";
+        $rolecapability=$DB->get_record_sql($sql,$params);
+        if($rolecapability->permission==1){
+            $haspermission=1;
+            break;
+        }
+    }
+}
+
 // If the unenrolment has been confirmed and the sesskey is valid unenrol the user.
-if ($confirm && confirm_sesskey() && $manager->unenrol_user($ue)) {
-    redirect($returnurl);
+if($haspermission){
+    if ($confirm && confirm_sesskey() && $manager->unenrol_user($ue)) {
+        redirect($returnurl);
+    }
 }
 
 $yesurl = new moodle_url($PAGE->url, array('confirm'=>1, 'sesskey'=>sesskey()));
-$message = get_string('unenroluser', 'enrol_manual', array('user'=>fullname($user, true), 'course'=>format_string($course->fullname)));
 $fullname = fullname($user);
 $title = get_string('unenrol', 'enrol_manual');
 
@@ -92,5 +112,11 @@
 
 echo $OUTPUT->header();
 echo $OUTPUT->heading($fullname);
-echo $OUTPUT->confirm($message, $yesurl, $returnurl);
+if($haspermission||$confirm==0){
+    $message = get_string('unenroluser', 'enrol_manual', array('user'=>fullname($user, true), 'course'=>format_string($course->fullname)));
+    echo $OUTPUT->confirm($message, $yesurl, $returnurl);
+}else{  
+    $message= get_string('unenrolnotpermitted', 'enrol');
+    echo $OUTPUT->confirm($message,$returnurl,$returnurl);
+}
 echo $OUTPUT->footer();
\ No newline at end of file
Index: lang/en/enrol.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lang/en/enrol.php,v
retrieving revision 1.15
diff -u -r1.15 enrol.php
--- lang/en/enrol.php	27 Apr 2011 10:16:51 -0000	1.15
+++ lang/en/enrol.php	25 Mar 2012 15:57:31 -0000
@@ -52,6 +52,7 @@
 $string['enrolments'] = 'Enrolments';
 $string['enrolmentoptions'] = 'Enrolment options';
 $string['enrolnotpermitted'] = 'You do not have permission or are not allowed to enrol someone in this course';
+$string['unenrolnotpermitted'] = 'You do not have permission or are not allowed to unenrol from this course';
 $string['enrolperiod'] = 'Enrolment duration';
 $string['enrolusage'] = 'Instances / enrolments';
 $string['enrolusers'] = 'Enrol users';