--- loncom/interface/resetpw.pm	2013/08/14 16:47:37	1.35
+++ loncom/interface/resetpw.pm	2017/10/02 16:40:18	1.41
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Allow access to password changing via a token sent to user's e-mail. 
 #
-# $Id: resetpw.pm,v 1.35 2013/08/14 16:47:37 raeburn Exp $
+# $Id: resetpw.pm,v 1.41 2017/10/02 16:40:18 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -57,6 +57,7 @@ use Apache::lonnet;
 use Apache::loncommon;
 use Apache::lonlocal;
 use LONCAPA;
+use HTML::Entities;
 
 sub handler {
     my $r = shift;
@@ -87,8 +88,25 @@ sub handler {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
     
     my @emailtypes = ('permanentemail','critnotification','notification');
-    my $uname = &unescape($env{'form.uname'});
-    my $udom = $env{'form.udom'};
+    my $uname = $env{'form.uname'};
+    $uname =~ s/^\s+|\s+$//g;
+    $uname = &LONCAPA::clean_username($uname);
+    my $udom = &LONCAPA::clean_domain($env{'form.udom'});
+    my ($domdesc,$otherinst);
+    if ($udom) {
+        $domdesc = &Apache::lonnet::domain($udom,'description');
+        if ($domdesc) {
+            $otherinst = 1;
+            my @ids=&Apache::lonnet::current_machine_ids();
+            my %servers = &Apache::lonnet::internet_dom_servers($udom);
+            foreach my $server (keys(%servers)) {
+                if (grep(/^\Q$server\E$/,@ids)) {
+                    $otherinst = 0;
+                    last;
+                }
+            }
+        }
+    }
     my $token = $env{'form.token'};
     my $brcrum = [];
     if ($token) {
@@ -106,66 +124,155 @@ sub handler {
         }
     }
     my $args = {bread_crumbs => $brcrum};
-    $r->print(&Apache::loncommon::start_page('Reset password','',$args));
-    $r->print('<h2>'.&mt('Reset forgotten LON-CAPA password').'</h2>');
+    my $js;
+    unless ($token || $otherinst || ($uname && $udom)) {
+        my (@intdoms,@instdoms);
+        my $internet_names = &Apache::lonnet::get_internet_names($server);
+        if (ref($internet_names) eq 'ARRAY') {
+            @intdoms = @{$internet_names};
+        }
+        if (@intdoms) {
+            my %iphost = &Apache::lonnet::get_iphost();
+            foreach my $ip (keys(%iphost)) {
+                if (ref($iphost{$ip}) eq 'ARRAY') {
+                    foreach my $id (@{$iphost{$ip}}) {
+                        my $location = &Apache::lonnet::internet_dom($id);
+                        if ($location) {
+                            if (grep(/^\Q$location\E$/,@intdoms)) {
+                                my $dom = &Apache::lonnet::host_domain($id);
+                                unless (grep(/^\Q$dom\E/,@instdoms)) {
+                                    push(@instdoms,$dom);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        my $instdomstr;
+        if (@instdoms > 0) {
+            $instdomstr = "'".join("','",@instdoms)."'";
+        }
+        my %js_lt = &Apache::lonlocal::texthash(
+            thdo  => 'The domain you have selected is for another institution.',
+            yowi  => 'You will be switched to the Forgot Password utility at that institution.',
+            unam  => 'You must enter a username.',
+            mail  => 'You must enter an e-mail address.'
+        );
+        &js_escape(\%js_lt);
+        $js = <<"END";
+<script type="text/javascript">
+// <![CDATA[
+function verifyDomain(caller,form) {
+    var redirect = 1; 
+    var instdoms = new Array($instdomstr);
+    if (instdoms.length > 0) {
+        for (var i=0; i<instdoms.length; i++) {
+            if (caller.options[caller.selectedIndex].value == instdoms[i]) {
+                redirect = 0;
+                break;
+            }
+        }
+    }
+    if (redirect == 1) {
+        if (confirm('$js_lt{thdo}\\n$js_lt{yowi}')) {
+            form.submit();
+        }
+    }
+    return;
+}
+
+function validInfo() {
+    if (document.forgotpw.uname.value == '') {
+        alert("$js_lt{'unam'}");
+        return false;
+    }
+    if (document.forgotpw.useremail.value == '') {
+        alert("$js_lt{'mail'}");
+        return false;
+    }
+    return true;
+}
+// ]]>
+</script>
+END
+    }
+    my $header = &Apache::loncommon::start_page('Reset password',$js,$args).
+                 '<h2>'.&mt('Reset forgotten LON-CAPA password').'</h2>';
     my $output;
     if ($token) {
-        $output = &reset_passwd($r,$token,$contact_name,$contact_email);
-    } elsif ($uname && $udom) {
-        my $domdesc = &Apache::lonnet::domain($udom,'description');
-        my $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
-        if ($authtype =~ /^internal/) {
-            my $useremail = $env{'form.useremail'};
-            if ($useremail !~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
-                $output = &invalid_state('baduseremail',$domdesc,
-                                         $contact_name,$contact_email);
-            } else {
-                my %userinfo = 
-		    &Apache::lonnet::get('environment',\@emailtypes,
-					 $udom,$uname);
-                my @allemails;
-                foreach my $type (@emailtypes) {
-                    my $email = $userinfo{$type};
-                    my @items;
-                    if ($email =~ /,/) {
-                        @items = split(',',$userinfo{$type});
-                    } else {
-                        @items = ($email);
-                    }
-                    foreach my $item (@items) {
-                        if ($item =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
-                            unless(grep(/^\Q$item\E$/,@allemails)) { 
-                                push(@allemails,$item);
+        $r->print($header);
+        &reset_passwd($r,$token,$contact_name,$contact_email);
+        $r->print(&Apache::loncommon::end_page());
+        return OK;
+    } elsif ($udom) {
+        if (!$domdesc) {
+            $output = &invalid_state('baddomain',$domdesc,
+                                     $contact_name,$contact_email); 
+        } elsif ($otherinst) {
+            ($header,$output) = &homeserver_redirect($uname,$udom,$domdesc,$brcrum);
+        } elsif ($uname) {
+            my $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
+            if ($authtype =~ /^internal/) {
+                my $useremail = $env{'form.useremail'};
+                my ($blocked,$blocktext) =
+                    &Apache::loncommon::blocking_status('passwd',$uname,$udom);
+                if ($blocked) {
+                    $output = '<p class="LC_warning">'.$blocktext.'</p>'
+                              .&display_actions($contact_email,$domdesc);
+                } elsif ($useremail !~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
+                    $output = &invalid_state('baduseremail',$domdesc,
+                                             $contact_name,$contact_email);
+                } else {
+                    my %userinfo = 
+	                &Apache::lonnet::get('environment',\@emailtypes,
+					     $udom,$uname);
+                    my @allemails;
+                    foreach my $type (@emailtypes) {
+                        my $email = $userinfo{$type};
+                        my @items;
+                        if ($email =~ /,/) {
+                            @items = split(',',$userinfo{$type});
+                        } else {
+                            @items = ($email);
+                        }
+                        foreach my $item (@items) {
+                            if ($item =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
+                                unless(grep(/^\Q$item\E$/,@allemails)) { 
+                                    push(@allemails,$item);
+                                }
                             }
                         }
                     }
-                }
-                if (@allemails > 0) {
-                    if (grep(/^\Q$useremail\E$/,@allemails)) {
-                        $output = &send_token($uname,$udom,$useremail,$server,
-                                              $domdesc,$contact_name,
-                                              $contact_email);
+                    if (@allemails > 0) {
+                        if (grep(/^\Q$useremail\E$/,@allemails)) {
+                            $output = &send_token($uname,$udom,$useremail,$server,
+                                                  $domdesc,$contact_name,
+                                                  $contact_email);
+                        } else {
+                            $output = &invalid_state('mismatch',$domdesc,
+                                                     $contact_name,
+                                                     $contact_email);
+                        }
                     } else {
-                        $output = &invalid_state('mismatch',$domdesc,
-                                                 $contact_name,
-                                                 $contact_email);
+                        $output = &invalid_state('missing',$domdesc,
+                                                 $contact_name,$contact_email);
                     }
-                } else {
-                    $output = &invalid_state('missing',$domdesc,
-                                             $contact_name,$contact_email);
                 }
+            } elsif ($authtype =~ /^(krb|unix|local)/) { 
+                $output = &invalid_state('authentication',$domdesc,
+                                         $contact_name,$contact_email);
+            } else {
+                $output = &invalid_state('invalid',$domdesc,
+                                         $contact_name,$contact_email);
             }
-        } elsif ($authtype =~ /^(krb|unix|local)/) { 
-            $output = &invalid_state('authentication',$domdesc,
-                                     $contact_name,$contact_email);
         } else {
-            $output = &invalid_state('invalid',$domdesc,
-                                     $contact_name,$contact_email);
+            $output = &get_uname($defdom);
         }
     } else {
         $output = &get_uname($defdom);
     }
-    $r->print($output);
+    $r->print($header.$output);
     $r->print(&Apache::loncommon::end_page());
     return OK;
 }
@@ -184,16 +291,23 @@ sub get_uname {
            .'<li>'.&mt('You must be able to access e-mail sent to that address.').'</li>'
            .'<li>'.&mt('Your LON-CAPA account must be of a type for which LON-CAPA can reset a password.')
            .'</ul>';
-    $msg .= '<form name="forgotpw" method="post" action="/adm/resetpw">'.
+    my $mobileargs;
+    (undef,undef,undef,undef,undef,undef,my $clientmobile) =
+        &Apache::loncommon::decode_user_agent();
+    if ($clientmobile) {
+        $mobileargs = 'autocapitalize="off" autocorrect="off" ';
+    }
+    my $onchange = 'javascript:verifyDomain(this,this.form);';
+    $msg .= '<form name="forgotpw" method="post" action="/adm/resetpw" onsubmit="return validInfo();">'.
             &Apache::lonhtmlcommon::start_pick_box(). 
             &Apache::lonhtmlcommon::row_title($lt{'unam'}).
-            '<input type="text" name="uname" size="20" />'.
+            '<input type="text" name="uname" size="20" '.$mobileargs.'/>'.
             &Apache::lonhtmlcommon::row_closure(1).
             &Apache::lonhtmlcommon::row_title($lt{'udom'}).
-            &Apache::loncommon::select_dom_form($defdom,'udom').
+            &Apache::loncommon::select_dom_form($defdom,'udom',undef,undef,$onchange).
             &Apache::lonhtmlcommon::row_closure(1).
             &Apache::lonhtmlcommon::row_title($lt{'uemail'}).
-            '<input type="text" name="useremail" size="30" />'.
+            '<input type="text" name="useremail" size="30" '.$mobileargs.'/>'.
             &Apache::lonhtmlcommon::end_pick_box().
             '<br /><br /><input type="submit" name="resetter" value="'.$lt{'proc'}.'" /></form>';
     return $msg;
@@ -287,6 +401,8 @@ sub invalid_state {
             $msg = &mt('A valid e-mail address was not located in the LON-CAPA system for the username and domain you provided.');
         } elsif ($error eq 'authentication') {
             $msg = &mt('The username you provided uses an authentication type which can not be reset directly via LON-CAPA.');
+        } elsif ($error eq 'baddomain') {
+            $msg = &mt('The domain you provided was not verified as a valid domain in the LON-CAPA system.');
         }
         $msg = '<p class="LC_warning">'.$msg.'</p>'
               .&display_actions($contact_email,$domdesc);
@@ -294,15 +410,34 @@ sub invalid_state {
     return $msg;
 }
 
+sub homeserver_redirect {
+    my ($uname,$udom,$domdesc,$brcrum) = @_;
+    my $uhome = &Apache::lonnet::homeserver();
+    if ($uhome eq 'no_host') {
+        $uhome = &Apache::lonnet::domain($udom,'primary');
+    }
+    my $protocol = $Apache::lonnet::protocol{$uhome};
+    $protocol = 'http' if ($protocol ne 'https');
+    my $url = $protocol.'://'.&Apache::lonnet::hostname($uhome).'/adm/resetpw';
+    # Breadcrumbs
+    my $start_page = &Apache::loncommon::start_page('Switching Server',undef,
+                                                    {'redirect' => [0,$url],
+                                                     'bread_crumbs' => $brcrum,});
+    my $output = '<p>'.&mt('This LON-CAPA server belongs to a different domain.').' '.
+                       &mt('You are being switched to your domain ([_1]), to use the "Forgot Password" tool.',$domdesc).
+                 '</p>';
+    return ($start_page,$output);
+}
+
 sub reset_passwd {
     my ($r,$token,$contact_name,$contact_email) = @_;
-    my $msg;
     my %data = &Apache::lonnet::tmpget($token);
     my $now = time;
     if (keys(%data) == 0) {
-        $msg = &mt('Sorry, the URL you provided to complete the reset of your password was invalid. Either the token included in the URL has been deleted or the URL you provided was invalid. Please submit a [_1]new request[_2] for a password reset, and follow the link to the new URL included in the e-mail that will be sent to you, to allow you to enter a new password.'
-                  ,'<a href="/adm/resetpw">','</a>');
-        return $msg;
+        $r->print(&mt('Sorry, the URL you provided to complete the reset of your password was invalid. Either the token included in the URL has been deleted or the URL you provided was invalid. Please submit a [_1]new request[_2] for a password reset, and follow the link to the new URL included in the e-mail that will be sent to you, to allow you to enter a new password.'
+                  ,'<a href="/adm/resetpw">','</a>')
+        );
+        return;
     }
     if (($data{'time'} =~ /^\d+$/) && 
         ($data{'username'} ne '') && 
@@ -310,11 +445,20 @@ sub reset_passwd {
         ($data{'email'}  =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) && 
         ($data{'temppasswd'} =~/^\w+$/)) {
         my $reqtime = &Apache::lonlocal::locallocaltime($data{'time'});
-        if ($now - $data{'time'} < 7200) {
+        my ($blocked,$blocktext) =
+            &Apache::loncommon::blocking_status('passwd',$data{'username'},$data{'domain'});
+        if ($blocked) {
+            $r->print('<p class="LC_warning">'.$blocktext.'</p>');
+            return;
+        } elsif ($now - $data{'time'} < 7200) {
             if ($env{'form.action'} eq 'verify_and_change_pass') {
+                $env{'form.uname'} =~ s/^\s+|\s+$//g;
+                $env{'form.udom'} =~ s/^\s+|\s+$//g;
+                $env{'form.email'} =~ s/^\s+|\s+$//g;
                 unless (($env{'form.uname'} eq $data{'username'}) && ($env{'form.udom'} eq $data{'domain'}) && ($env{'form.email'} eq $data{'email'})) {
-                    $msg = &generic_failure_msg($contact_name,$contact_email);
-                    return $msg;
+                    &Apache::lonnet::logthis("Forgot Password -- token data: ||$data{'username'}|| ||$data{'domain'}|| ||$data{'email'}|| differs from form: ||$env{'form.uname'}|| ||$env{'form.udom'}|| ||$env{'form.email'}||");
+                    $r->print(&generic_failure_msg($contact_name,$contact_email));
+                    return;
                 }
                 my $change_failed = 
 		    &Apache::lonpreferences::verify_and_change_password($r,'reset_by_email',$token);
@@ -340,14 +484,15 @@ sub reset_passwd {
                                    .' confirming setting of your new password.'
                                     ,'<span class="LC_filename">'.$data{'email'}.'</span>'),1);
                     }
-                    $msg .=
+                    $r->print(
                         &Apache::loncommon::confirmwrapper($confirm_msg)
                        .&Apache::lonhtmlcommon::actionbox([
-                            '<a href="/adm/login">'.&mt('Go to the login page').'</a>']);
+                            '<a href="/adm/login">'.&mt('Go to the login page').'</a>'])
+                    );
                 } elsif ($change_failed eq 'invalid_client') {
                     my $homeserver = &Apache::lonnet::homeserver($data{'username'},$data{'domain'});
                     if ($homeserver eq 'no_host') {
-                        $msg .= &generic_failure_msg($contact_name,$contact_email);
+                        $r->print(&generic_failure_msg($contact_name,$contact_email));
                     } else {
                         my $protocol = $Apache::lonnet::protocol{$homeserver};
                         $protocol = 'http' if ($protocol ne 'https');
@@ -358,16 +503,17 @@ sub reset_passwd {
                            $opentag = '<a href="'.$url.'">';
                            $closetag = '</a>';
                         }
-                        $msg .=
+                        $r->print(
                             '<p class="LC_warning">'
                            .&mt('A problem occurred when attempting to reset'
                                .' the password for your account.'
                                .' Please try again from your [_1]home server[_2].'
                                 ,$opentag,$closetag)
-                           .'</p>';
+                           .'</p>'
+                        );
                     }
                 } else {
-                    $msg .= &generic_failure_msg($contact_name,$contact_email);
+                    $r->print(&generic_failure_msg($contact_name,$contact_email));
                 }
             } else {
                 $r->print(&mt('The token included in an e-mail sent to you [_1] has been verified, so you may now proceed to reset the password for your LON-CAPA account.',$reqtime).'<br /><br />');
@@ -375,20 +521,22 @@ sub reset_passwd {
                 &Apache::lonpreferences::passwordchanger($r,'','reset_by_email',$token);
             }
         } else {
-            $msg =
+            $r->print(
                 '<p class="LC_warning">'
                .&mt('Sorry, the token generated when you requested a password reset has expired. Please submit a [_1]new request[_2], and follow the link to the web page included in the new e-mail that will be sent to you, to allow you to enter a new password.'
                     ,'<a href="/adm/resetpw">','</a>')
-               .'</p>';
+               .'</p>'
+            );
         }
     } else {
-        $msg .=
+        $r->print(
             '<p class="LC_warning">'
            .&mt('Sorry, the URL generated when you requested reset of your password contained incomplete information. Please submit a [_1]new request[_2] for a password reset, and use the new URL that will be sent to your e-mail account to complete the process.'
                 ,'<a href="/adm/resetpw">','</a>')
-           .'</p>';
+           .'</p>'
+        );
     }
-    return $msg;
+    return;
 }
 
 sub generic_failure_msg {
@@ -397,7 +545,7 @@ sub generic_failure_msg {
         '<p class="LC_error">'
        .&mt('A problem occurred when attempting to reset the password for your account.')
        .'<br />'
-       .&mt('Please contact the [_1] - ([_2]) for assistance.',
+       .&mt('Please contact the [_1] ([_2]) for assistance.',
               $contact_name,'<a href="mailto:'.$contact_email.'">'.$contact_email.'</a>')
        .'</p>';
 }