From: skodak <skodak>
Date: Sat, 2 Dec 2006 19:05:24 +0000 (+0000)
Subject: MDL-7768 forgot_password.php copnverted to use new forms:
X-Git-Url: http://git.mjollnir.org/gw?a=commitdiff_plain;h=4adc9c4f60f495447e4b6eae76cc2392896d2929;p=moodle.git

MDL-7768 forgot_password.php copnverted to use new forms:
* new forms
* minor refactoring and code cleanup
* secret is now cleared to prevent repeated use of change confirmation link, added new error message see MDL-7755 (patch by Andrew Walbran)
---

diff --git a/lang/en_utf8/moodle.php b/lang/en_utf8/moodle.php
index a0ffd64f59..6d02f424ae 100644
--- a/lang/en_utf8/moodle.php
+++ b/lang/en_utf8/moodle.php
@@ -468,7 +468,7 @@ line at the top of your web browser window.
 
 If you need help, please contact the site administrator,
 $a->admin';
-$string['emailpasswordconfirmationsubject'] = '$a: change password confirmation';
+$string['emailpasswordconfirmationsubject'] = '$a: Change password confirmation';
 $string['emailpasswordconfirmmaybesent'] = '<p>If you supplied correct username or address an email should have been sent to you.</p>
    <p>It contains easy instructions to confirm and complete this password change.
 If you continue to have difficulty, please contact the site administrator.</p>';
@@ -1184,6 +1184,7 @@ $string['secondstotime432000'] = '5 days';
 $string['secondstotime518400'] = '6 days';
 $string['secondstotime604800'] = '1 Week';
 $string['secondstotime86400'] = '1 day';
+$string['secretalreadyused'] = 'Change password confirmation link was already used, password was not changed.';
 $string['secs'] = 'secs';
 $string['section'] = 'Section';
 $string['sections'] = 'Sections';
diff --git a/login/forgot_password.php b/login/forgot_password.php
index 8dc179bf68..e1ba047bc7 100644
--- a/login/forgot_password.php
+++ b/login/forgot_password.php
@@ -1,107 +1,100 @@
-<?php  
+<?php 
 // $Id$
-// forgot password routine. 
+// forgot password routine.
 // find the user and call the appropriate routine for their authentication
 // type.
 
 require_once('../config.php');
-httpsrequired();
+require_once('forgot_password_form.php');
 
+$action     = optional_param('action', '', PARAM_ALPHA);
+$p_secret   = optional_param('p', false, PARAM_RAW);
+$p_username = optional_param('s', false, PARAM_RAW);
 
-//******************************
-// GET PARAMS AND STRINGS
-//******************************
+httpsrequired();
 
-// parameters from form
-$param = new StdClass;
-$param->action = optional_param( 'action','',PARAM_ALPHA );
-$param->email = optional_param( 'email','',PARAM_CLEAN );
-$param->p = optional_param( 'p','',PARAM_CLEAN );
-$param->s = optional_param( 's','',PARAM_CLEAN );
-$param->username = optional_param( 'username','',PARAM_CLEAN );
+$sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
 
 // setup text strings
-$txt = new StdClass;
-$txt->cancel = get_string('cancel');
-$txt->confirmednot = get_string('confirmednot');
-$txt->email = get_string('email');
-$txt->emailnotfound = get_string('emailnotfound');
-$txt->forgotten = get_string('passwordforgotten');
-$txt->forgottenduplicate = get_string('forgottenduplicate','moodle',get_admin() );
-$txt->forgotteninstructions = get_string('passwordforgotteninstructions');
-$txt->invalidemail = get_string('invalidemail');
-$txt->login = get_string('login');
-$txt->loginalready = get_string('loginalready');
-$txt->ok = get_string('ok');
-$txt->passwordextlink = get_string('passwordextlink');
-$txt->passwordnohelp = get_string('passwordnohelp');
-$txt->senddetails = get_string('senddetails');
-$txt->username = get_string('username');
-$txt->usernameemailmatch = get_string('usernameemailmatch');
-$txt->usernamenotfound = get_string('usernamenotfound');
-$txt->invalidurl = get_string('forgotteninvalidurl');
-
-$sesskey = sesskey();
+$strcancel             = get_string('cancel');
+$strconfirmednot       = get_string('confirmednot');
+$stremail              = get_string('email');
+$stremailnotfound      = get_string('emailnotfound');
+$strerror              = get_string('error');
+$strforgotten          = get_string('passwordforgotten');
+$strforgottenduplicate = get_string('forgottenduplicate', 'moodle', get_admin()); // does not exist in lang file??
+$strforgotteninstruct  = get_string('passwordforgotteninstructions');
+$strinvalidemail       = get_string('invalidemail');
+$strinvalidurl         = get_string('forgotteninvalidurl');
+$strlogin              = get_string('login');
+$strloginalready       = get_string('loginalready');
+$strok                 = get_string('ok');
+$strpasswordextlink    = get_string('passwordextlink');
+$strpasswordnohelp     = get_string('passwordnohelp');
+$strsecretalreadyused  = get_string('secretalreadyused');
+$strsenddetails        = get_string('senddetails');
+$strusername           = get_string('username');
+$strusernameemailmatch = get_string('usernameemailmatch');
+$strusernamenotfound   = get_string('usernamenotfound');
+
 $errors = array();
 $page = ''; // page to display
 
 
-//******************************
-// PROCESS ACTIONS
-//******************************
-
 // if you are logged in then you shouldn't be here!
 if (isloggedin() && !isguest()) {
-    redirect( $CFG->wwwroot.'/index.php', $txt->loginalready, 5 );
+    redirect($CFG->wwwroot.'/index.php', $strloginalready, 5);
 }
 
 // changepassword link replaced by individual auth setting
 $auth = $CFG->auth; // the 'default' authentication method
 if (!empty($CFG->changepassword)) {
     if (empty($CFG->{'auth_'.$auth.'_changepasswordurl'})) {
-       set_config('auth_'.$auth.'_changepasswordurl',$CFG->changepassword );
+       set_config('auth_'.$auth.'_changepasswordurl', $CFG->changepassword);
     }
-    set_config('changepassword','');
-}        
- 
-// ACTION = FIND
-if ($param->action=='find' and confirm_sesskey()) {
-    // find the user in the database
+    set_config('changepassword', '');
+}       
+
+
+$mform = new forgot_password_form('forgot_password.php');
+
+if ($action == 'find' and $param = $mform->data_submitted()) {
+///=====================
+/// find the user in the database and mail info
+///=====================
 
     // first try the username
     if (!empty($param->username)) {
-        if (!$user=get_complete_user_data('username',$param->username)) {
-            $errors[] = $txt->usernamenotfound;
+        if (!$user = get_complete_user_data('username', $param->username)) {
+            $errors[] = $strusernamenotfound;
         }
+    } else {
+        $user = false;
     }
 
     // now try email
     if (!empty($param->email)) {
         // validate email address 1st
-        if (!validate_email( $param->email )) {
-            $errors[] = $txt->invalidemail;
-        }
-        elseif (count_records('user','email',$param->email) > 1) {
+        if (!validate_email($param->email)) {
+            $errors[] = $strinvalidemail;
+
+        } else if (count_records('user', 'email', $param->email) > 1) {
             // (if there is more than one instance of the email then we
             // cannot complete automated recovery)
             $page = 'duplicateemail';
+            $errors[] = $strforgottenduplicate;
 
-            // just clear everything - we drop through to message page
-            unset( $user );
-            unset( $email );
-            $errors = array();
-        }
-        elseif (!$mailuser = get_complete_user_data('email',$param->email)) {
-            $errors[] = $txt->emailnotfound;
+        } else if (!$mailuser = get_complete_user_data('email', $param->email)) {
+            $errors[] = $stremailnotfound;
         }
 
         // just in case they did specify both...
         // if $user exists then check they actually match (then just use $user)
         if (!empty($user) and !empty($mailuser)) {
             if ($user->id != $mailuser->id) {
-                $errors[] = $txt->usernameemailmatch;
+                $errors[] = $strusernameemailmatch;
             }
-        $user = $mailuser;
+            $user = $mailuser;
         }
 
         // use email user if username not used or located
@@ -109,51 +102,49 @@ if ($param->action=='find' and confirm_sesskey()) {
             $user = $mailuser;
         }
     }
-
+   
     // if user located (and no errors) take the appropriate action
-    if (!empty($user) and (count($errors)==0)) {
+    if (empty($errors) and !empty($user)) {
         // check this user isn't 'unconfirmed'
         if (empty($user->confirmed)) {
-            $errors[] = $txt->confirmednot;
-        }
-        else {
+            $errors[] = $strconfirmednot;
+        } else {
             // what to do depends on the authentication method
             $authmethod = $user->auth;
-            if (is_internal_auth( $authmethod ) or !empty($CFG->{'auth_'.$authmethod.'_stdchangepassword'})) {
+            if (is_internal_auth($authmethod) or !empty($CFG->{'auth_'.$authmethod.'_stdchangepassword'})) {
                 // handle internal authentication
-                
+               
                 // set 'secret' string
-                $user->secret = random_string( 15 );
-                if (!set_field('user','secret',$user->secret,'id',$user->id)) {
-                    error( 'error setting user secret string' );
+                $user->secret = random_string(15);
+                if (!set_field('user', 'secret', $user->secret, 'id', $user->id)) {
+                    error('error setting user secret string');
                 }
 
                 // send email (make sure mail block is off)
                 $user->mailstop = 0;
                 if (!send_password_change_confirmation_email($user)) {
-                    error( 'error sending password change confirmation email' );
+                    error('error sending password change confirmation email');
                 }
- 
+
                 // display confirm message
                 $page = 'emailconfirm';
-            }
-            else {
+            } else {
                 // handle some 'external' authentication
                 // if help text defined then we are going to display another page
-                $txt->extmessage = '';
+                $strextmessage = '';
                 $continue = false;
-                if (!empty( $CFG->{'auth_'.$authmethod.'_changepasswordhelp'} )) {
-                    $txt->extmessage = $CFG->{'auth_'.$authmethod.'_changepasswordhelp'}.'<br /><br />';
+                if (!empty($CFG->{'auth_'.$authmethod.'_changepasswordhelp'})) {
+                    $strextmessage = $CFG->{'auth_'.$authmethod.'_changepasswordhelp'}.'<br /><br />';
                 }
                 // if url defined then add that to the message (with a standard message)
-                if (!empty( $CFG->{'auth_'.$authmethod.'_changepasswordurl'} )) {
-                    $txt->extmessage .= $txt->passwordextlink . '<br /><br />';
+                if (!empty($CFG->{'auth_'.$authmethod.'_changepasswordurl'})) {
+                    $strextmessage .= $strpasswordextlink . '<br /><br />';
                     $link = $CFG->{'auth_'.$authmethod.'_changepasswordurl'};
-                    $txt->extmessage .= "<a href=\"$link\">$link</a>";
+                    $strextmessage .= "<a href=\"$link\">$link</a>";
                 }
                 // if nothing to display, just do message that we can't help
-                if (empty($txt->extmessage)) {
-                    $txt->extmessage = $txt->passwordextlink;
+                if (empty($strextmessage)) {
+                    $strextmessage = $strpasswordextlink;
                     $continue = true;
                 }
                 $page = 'external';
@@ -161,46 +152,61 @@ if ($param->action=='find' and confirm_sesskey()) {
         }
     }
 
-    // nothing supplied - error
-    if (empty($param->username) and empty($param->email)) {
-        $errors[] = 'no email or username';
-    }
-
     if ($page != 'external' and !empty($CFG->protectusernames)) {
         // do not give any hints about usernames or email!
         $errors = array();
         $page = 'emailmaybeconfirmed';
     }
-}
 
-// ACTION = AUTHENTICATE
-if (!empty($param->p) and !empty($param->s)) {
+    // nothing supplied - show error in any case
+    if (empty($param->username) and empty($param->email)) {
+        $errors[] = 'no email or username';
+        $page = '';
+    }
+
+
+} else if ($p_secret !== false) {
+///=====================
+/// user clicked on link in email message
+///=====================
 
     update_login_count();
-    $user = get_complete_user_data('username',$param->s);
 
-    // make sure that url relates to a valid user
-    if (!empty($user) and $user->secret == $param->p) {
+    $user = get_complete_user_data('username', $p_username);
+
+    if (!empty($user) and $user->secret === '') {
+        $errors[] = $strsecretalreadyused;
+    } else if (!empty($user) and $user->secret == stripslashes($p_secret)) {
+        // make sure that url relates to a valid user
+
         // check this isn't guest user
-        if (isguest( $user->id )) {
+        // TODO: add change password capability so that we can prevent participants to change password
+        if ($user->username == 'guest' or has_capability('moodle/legacy:guest', $sitecontext, $user->id, false)) {
             error('You cannot change the guest password');
         }
 
         // override email stop and mail new password
         $user->emailstop = 0;
         if (!reset_password_and_mail($user)) {
-            error( 'Error resetting password and mailing you' );
+            error('Error resetting password and mailing you');
+        }
+
+        // Clear secret so that it can not be used again
+        $user->secret = '';
+        if (!set_field('user', 'secret', $user->secret, 'id', $user->id)) {
+            error('Error resetting user secret string');
         }
 
         reset_login_count();
         $page = 'emailsent';
-       
-        $changepasswordurl = "{$CFG->httpswwwroot}/login/change_password.php?action=forgot";
+      
+        $changepasswordurl = "{$CFG->httpswwwroot}/login/change_password.php";
+        $a = new object();
         $a->email = $user->email;
         $a->link = $changepasswordurl;
-        $txt->emailpasswordsent = get_string( 'emailpasswordsent', '', $a );
+        $stremailpasswordsent = get_string('emailpasswordsent', '', $a);
     } else {
-       $errors[] = $txt->invalidurl;
+       $errors[] = $strinvalidurl;
     }
 
 }
@@ -209,90 +215,66 @@ if (!empty($param->p) and !empty($param->s)) {
 //******************************
 // DISPLAY PART
 //******************************
- 
-print_header( $txt->forgotten, $txt->forgotten,
-    "<a href=\"{$CFG->wwwroot}/login/index.php\">{$txt->login}</a>->{$txt->forgotten}",
-    'form.email' );
 
-if ($page=='emailmaybeconfirmed') {
+print_header($strforgotten, $strforgotten,
+    "<a href=\"{$CFG->wwwroot}/login/index.php\">{$strlogin}</a>->{$strforgotten}",
+    'form.email');
+
+if ($page == 'emailmaybeconfirmed') {
     // Print general confirmation message
-    notice(get_string('emailpasswordconfirmmaybesent'),$CFG->wwwroot.'/index.php'); 
+    notice(get_string('emailpasswordconfirmmaybesent'), $CFG->wwwroot.'/index.php');
 }
 
-// check $page for appropriate page to display
-if ($page=='emailconfirm') {
+
+/// ---------------------------------------------
+/// check $page for appropriate page to display
+if ($page == 'emailconfirm') {
     // Confirm (internal method) email sent
     $protectedemail = preg_replace('/([^@]*)@(.*)/', '******@$2', $user->email); // obfuscate the email address to protect privacy
-    $txt->emailpasswordconfirmsent = get_string( 'emailpasswordconfirmsent','',$protectedemail );
-    notice( $txt->emailpasswordconfirmsent,$CFG->wwwroot.'/index.php'); 
-}
+    $stremailpasswordconfirmsent = get_string('emailpasswordconfirmsent', '', $protectedemail);
+    notice($stremailpasswordconfirmsent, $CFG->wwwroot.'/index.php');
 
-elseif ($page=='external') { 
+} else if ($page == 'external') {
     // display change password help text
-    print_simple_box( $txt->extmessage, 'center', '50%','','20','noticebox' );
+    print_simple_box($strextmessage, 'center', '50%', '', '20', 'noticebox');
 
     // only print continue button if it makes sense
     if ($continue) {
         print_continue($CFG->wwwroot.'/index.php');
     }
-}
 
-elseif ($page=='emailsent') {
+} else if ($page == 'emailsent') {
     // mail sent with new password
-    notice( $txt->emailpasswordsent, $changepasswordurl );
-}
+    notice($stremailpasswordsent, $changepasswordurl);
 
-elseif ($page=='duplicateemail') {
+} else if ($page == 'duplicateemail') {
     // email address appears more than once
-    notice( $txt->forgottenduplicate, $CFG->wwwroot.'/index.php');
-}
+    notice($strforgottenduplicate, $CFG->wwwroot.'/index.php');
 
-else {
+} else {
     echo '<br />';
-    print_simple_box_start('center','50%','','20');
+    print_simple_box_start('center', '50%', '', '20');
 
     // display any errors
-    if (count($errors)) {
-        echo "<ul class=\"errors\">\n";
+    if (!empty($errors)) {
+        $s = $strerror;
+        $s .= '<ul class="errors">';
         foreach ($errors as $error) {
-            echo "    <li>$error</li>\n";
+            $s .= '<li>'.$error.'</li>';
         }
-        echo "</ul>\n";
+        $s .= '</ul>';
+        notify($s, 'notifyproblem');
     }
 
-?>
-
-<p><?php echo $txt->forgotteninstructions; ?></p>
-
-<form action="forgot_password.php" method="post">
-    <input type="hidden" name="sesskey" value="<?php echo $sesskey; ?>" />
-    <input type="hidden" name="action" value="find" />
-    <table id="forgottenpassword" cellpadding="2">
-        <tr>
-            <td><label for="username"><?php echo $txt->username; ?></label></td>
-            <td><input type="text" name="username" id="username" size="25" /></td>
-        </tr>
-        <tr>
-            <td><label for="email"><?php echo $txt->email; ?></label></td>
-            <td><input type="text" name="email" id="email" size="25" /></td>
-        </tr>
-        <tr>
-             <td>&nbsp;</td>
-             <td><input type="submit" value="<?php echo $txt->ok; ?>" />
-                 <input type="button" value="<?php echo $txt->cancel; ?>" 
-                 onclick="javascript: history.go(-1)" /></td>
-        </tr>
-    </table>   
-    
-
-</form>
-
-<?php
 }
 
+echo $strforgotteninstruct;
+
 print_simple_box_end();
-print_footer();
-?>
 
+$mform->display();
 
+print_footer();
+
+?>
 
diff --git a/login/forgot_password_form.php b/login/forgot_password_form.php
new file mode 100644
index 0000000000..5ad355296d
--- /dev/null
+++ b/login/forgot_password_form.php
@@ -0,0 +1,30 @@
+<?php //$Id$
+
+require_once $CFG->libdir.'/formslib.php';
+
+class forgot_password_form extends moodleform {
+
+    function definition() {
+        $mform    =& $this->_form;
+        $renderer =& $mform->defaultRenderer();
+
+        $mform->addElement('header', '', get_string('passwordforgotten'), '');
+
+        $mform->addElement('text', 'username', get_string('username'));
+        $mform->setType('username', PARAM_RAW);
+
+        $mform->addElement('text', 'email', get_string('email'));
+        $mform->setType('email', PARAM_RAW);
+
+         // hidden params
+        $mform->addElement('hidden', 'action', 'find');
+        $mform->setType('action', PARAM_ALPHA);
+
+        // buttons
+        $mform->addelement('submit', 'submitbutton', get_string('ok'));
+
+        $renderer->addStopFieldsetElements('submitbutton');
+    }
+}
+
+?>
\ No newline at end of file