README.md

@@ -1,32 +1,64 @@
-# lucidAuth
-[![](https://img.shields.io/badge/status-in%20production-%23003399.svg)](#) [![](https://img.shields.io/badge/contributors-1-green.svg) ](#)  
-
-Forward Authentication for use with proxies (caddy, nginx, traefik, etc)
-
-## Usage
-- Create a new folder, navigate to it in a commandprompt and run the following command:  
-  `git clone https://code.spamasaurus.com/djpbessems/lucidAuth.git`  
-- Edit `include/lucidAuth.config.php.example` to reflect your configuration and save as `include/lucidAuth.config.php`  
-- Create a new website (within any php-capable webserver) and make sure that the documentroot points to the `public` folder  
-- Check if you are able to browse to `https://<fqdn>/lucidAuth.login.php` (where `<fqdn>` is the actual domain -or IP address- your webserver is listening on)  
-- Edit your proxy's configuration to use the new website as forward proxy:  
-  - #### ~~in Caddy/nginx~~    <small>(planned for a later stage)</small>
-
-  - #### in Traefik  
-  Add the following lines (change to reflect your existing configuration):  
-  ```
-  [frontends.server1]
-    entrypoints = ["https"]
-    backend = "server1"
-    [frontends.server1.auth.forward]
-      address = "https://<fqdn>/lucidAuth.validateRequest.php"
-    [frontends.server1.routes]
-      [frontends.server1.routes.ext]
-        rule = "Host:<fqdn>"
-  ```
-
-- #### Important!  
-  The domainname of the website made in step 3, needs to match the domainname (*ignoring subdomains, if any*) of the resource utilizing this authentication proxy.
-
-## Questions or bugs
+# lucidAuth [![](https://img.shields.io/badge/status-in%20production-%23003399.svg)](#) [![](https://img.shields.io/badge/contributors-1-green.svg) ](#)  
+> *Respect* the unexpected, mitigate your risks  
+
+Forward Authentication for use with proxies (caddy, nginx, traefik, etc)
+
+## Usage
+- Create a new folder, navigate to it in a commandprompt and run the following command:  
+  `git clone https://code.spamasaurus.com/djpbessems/lucidAuth.git`  
+- Edit `include/lucidAuth.config.php.example` to reflect your configuration and save as `include/lucidAuth.config.php`  
+- Create a new website (within any php-capable webserver) and make sure that the documentroot points to the `public` folder  
+- Check if you are able to browse to `https://<fqdn>/lucidAuth.login.php` (where `<fqdn>` is the actual domain -or IP address- your webserver is listening on)  
+- Edit your proxy's configuration to use the new website as forward proxy:  
+  - #### ~~in Caddy/nginx~~    <small>(planned for a later stage)</small>
+
+  - #### in Traefik  
+  Add the following lines (change to reflect your existing configuration):  
+#####   1.7  
+  ```
+  [frontends.server1]
+          entrypoints = ["https"]
+          backend = "server1"
+          [frontends.server1.auth.forward]
+            address = "https://<fqdn>/lucidAuth.validateRequest.php"
+          [frontends.server1.routes]
+            [frontends.server1.routes.ext]
+              rule = "Host:<fqdn>"
+  ```
+#####   2.0  
+  Either whitelist IP's which should be trusted to send `HTTP_X-Forwarded-*` headers, ór enable insecure-mode in your static configuration:  
+  ```
+  entryPoints:
+          https:
+            address: :443
+            forwardedHeaders:
+              trustedIPs:
+                - "127.0.0.1/32"
+                - "192.168.1.0/24"
+        #      insecure: true
+  ```
+  Define a middleware that tells Traefik to forward requests for authentication in your dynamic file provider:  
+  ```
+  https:
+          middlewares:
+            ldap-authentication:
+              forwardAuth:
+                address: "https://<fqdn>/lucidAuth.validateRequest.php"
+                trustForwardHeader: true
+  ```
+  And finally add the new middleware to your service (different methods; this depends on your configuration):  
+  ```
+  # as a label (when using Docker provider)
+  traefik.http.routers.router1.middlewares: "ldap-authentication@file"
+  # as yaml (when using file provider)
+  routers:
+          router1:
+            middlewares:
+              - "ldap-authentication"
+  ```
+
+- #### Important!  
+  The domainname of the website made in step 3, needs to match the domainname (*ignoring subdomains, if any*) of the resource utilizing this authentication proxy.
+
+## Questions or bugs
 Feel free to open issues in this repository.

include/lucidAuth.functions.php

@@ -35,13 +35,36 @@ function authenticateLDAP (string $username, string $password) {
 		if (@ldap_bind($ds, $qualifiedUsername, utf8_encode($_POST['password']))) {
 			// Successful authentication; get additional userdetails from authenticationsource
 			$ldapSearchResults = ldap_search($ds, $settings->LDAP['BaseDN'], "sAMAccountName=$sanitizedUsername");
-			$commonName = ldap_get_entries($ds, $ldapSearchResults)[0]['cn'][0];
-			// Create JWT-payload
+            $commonName = ldap_get_entries($ds, $ldapSearchResults)[0]['cn'][0];
+
+            $browserDetails = get_browser(null, True);
+            $geoLocation = json_decode(file_get_contents("http://ip-api.com/json/{$_SERVER['HTTP_X_REAL_IP']}"));
+            if ($geoLocation->status === 'fail') {
+                switch ($geoLocation->message) {
+                    case 'private range':
+                    case 'reserved range':
+                        $geoLocation = json_decode(file_get_contents("http://ip-api.com/json/" . trim(file_get_contents('https://api.ipify.org')) ));
+                        break;
+                    case 'invalid query':
+                    default:
+                        $geoLocation->city = null;
+                        $geoLocation->countryCode = null;
+                        break;
+                }
+            }
+
+            // Create JWT-payload
 			$jwtPayload = [
-				'iat'	=> time(),					// Issued at: time when the token was generated
-				'iss'	=> $_SERVER['SERVER_NAME'],	// Issuer
-				'sub'	=> $qualifiedUsername,		// Subject (ie. username)
-				'name'	=> $commonName				// Common name (as retrieved from AD)
+				'iat'	=> time(),                                  // Issued at: time when the token was generated
+				'iss'	=> $_SERVER['SERVER_NAME'],                 // Issuer
+				'sub'	=> $qualifiedUsername,                      // Subject (ie. username)
+                'name'	=> $commonName,                             // Common name (as retrieved from AD)
+                'fp'    => base64_encode(json_encode((object) [     // Fingerprint
+                    'browser'       => $browserDetails['browser'],
+                    'platform'      => $browserDetails['platform'],
+                    'city'          => $geoLocation->city,
+                    'countrycode'   => $geoLocation->countryCode
+                ]))
 			];
 
 			$secureToken = JWT::encode($jwtPayload, base64_decode($settings->JWT['PrivateKey_base64']));
@@ -121,8 +144,8 @@ function validateToken (string $secureToken) {
 		WHERE LOWER(User.Username) = :username
 	');
 	$pdoQuery->execute([
-			':username'	=>	(string) strtolower($jwtPayload->sub)
-		]);
+		':username'	=>	(string) strtolower($jwtPayload->sub)
+	]);
 	foreach($pdoQuery->fetchAll(PDO::FETCH_ASSOC) as $row) {
 		try {
 			$storedTokens[] = JWT::decode($row['Value'], base64_decode($settings->JWT['PrivateKey_base64']), $settings->JWT['Algorithm']);
@@ -136,7 +159,9 @@ function validateToken (string $secureToken) {
 	if (!empty($storedTokens) && sizeof(array_filter($storedTokens, function ($value) use ($jwtPayload) {
 		return $value->iat === $jwtPayload->iat;
 	})) === 1) {
-		return [
+        purgeTokens($currentUserId, $settings->Session['Duration']);
+
+        return [
 			'status'	=> 'Success',
 			'name'		=> $jwtPayload->name,
             'uid'       => $currentUserId
@@ -149,4 +174,85 @@ function validateToken (string $secureToken) {
 	}
 }
 
+function purgeTokens(int $userID, int $maximumTokenAge) {
+	global $settings, $pdoDB;
+
+    $defunctTokens = []; $expiredTokens = [];
+
+    $pdoQuery = $pdoDB->prepare('
+		SELECT SecureToken.Id, SecureToken.Value
+		FROM SecureToken
+		WHERE SecureToken.UserId = :userid
+	');
+	$pdoQuery->execute([
+		':userid'	=>	(int) $userID
+	]);
+	foreach($pdoQuery->fetchAll(PDO::FETCH_ASSOC) as $row) {
+		try {
+            $token = JWT::decode($row['Value'], base64_decode($settings->JWT['PrivateKey_base64']), $settings->JWT['Algorithm']);
+            if ($token->iat < (time() - $maximumTokenAge)) {
+                $expiredTokens[] = $row['Id'];
+            }
+		} catch (Exception $e) {
+			$defunctTokens[] = $row['Id'];
+		}
+    }
+
+    try {
+        // Sadly, PDO does not support named parameters in constructions like 'IN ( :array )'
+        //   instead, the supported syntax is unnamed placeholders like 'IN (?, ?, ?, ...)'
+        $pdoQuery = $pdoDB->prepare('
+            DELETE FROM SecureToken
+            WHERE SecureToken.Id IN (' . implode( ',', array_fill(0, count(array_merge($defunctTokens, $expiredTokens)), '?')) . ')
+        ');
+        $pdoQuery->execute(array_merge($defunctTokens, $expiredTokens));
+
+        if ($settings->Debug['LogToFile']) {
+            file_put_contents('../purgeToken.log', (new DateTime())->format('Y-m-d\TH:i:s.u') . ' --- Garbage collection succeeded (' . $userID . ' => #' . $pdoQuery->rowCount() . ')' . PHP_EOL, FILE_APPEND);
+        }
+
+        return [
+            'status'    => 'Success',
+            'amount'    => $pdoQuery->rowCount()
+        ];
+    } catch (Exception $e) {
+        if ($settings->Debug['LogToFile']) {
+            file_put_contents('../purgeToken.log', (new DateTime())->format('Y-m-d\TH:i:s.u') . ' --- Garbage collection failed (' . $userID . ' => ' . $e . ')' . PHP_EOL, FILE_APPEND);
+        }
+
+        return ['status' => 'Fail', 'reason' => $e];
+    }
+}
+
+function deleteToken(array $tokenIDs, int $userID) {
+    try {
+        // Sadly, PDO does not support named parameters in constructions like 'IN ( :array )'
+        //   instead, the supported syntax is unnamed placeholders like 'IN (?, ?, ?, ...)'
+        $pdoQuery = $pdoDB->prepare('
+            DELETE FROM SecureToken
+            WHERE SecureToken.Id IN (' . implode( ',', array_fill(0, count($tokenIDs), '?')) . ')
+                AND SecureToken.UserId = :userid
+        ');
+        $pdoQuery->execute($tokenIDs,[
+    		':userid'	=>	(int) $userID
+        ]);
+
+        if ($settings->Debug['LogToFile']) {
+            file_put_contents('../deleteToken.log', (new DateTime())->format('Y-m-d\TH:i:s.u') . ' --- Successfully deleted specific token(s) (' . $userID . ' => #' . $pdoQuery->rowCount() . ')' . PHP_EOL, FILE_APPEND);
+        }
+
+        return [
+            'status'    => 'Success',
+            'amount'    => $pdoQuery->rowCount()
+        ];
+    } catch (Exception $e) {
+        if ($settings->Debug['LogToFile']) {
+            file_put_contents('../deleteToken.log', (new DateTime())->format('Y-m-d\TH:i:s.u') . ' --- Failed deleting specific token(s) (' . $userID . ' => ' . $e . ')' . PHP_EOL, FILE_APPEND);
+        }
+
+        return ['status' => 'Fail', 'reason' => $e];
+    }
+
+}
+
 ?>

include/lucidAuth.template.php

@@ -130,6 +130,22 @@ $contentLayout['manage']['section'] = <<<'MANAGE_SECTION'
                     %1$s
                   </tbody>
                 </table>
+                <div id="sessions">
+                  <span data-translation="label_sessions" style="float: left; margin-left: 5px;">Sessions</span>
+                  <br>
+                  <table id="sessiontable">
+                    <thead>
+                      <tr>
+                        <th data-translation="th_timestamp">Timestamp</th>
+                        <th data-translation="th_origin">&lt;origin&gt;</th>
+                        <th data-translation="th_description">Description</th>
+                        <th data-translation="th_manage">Manage</th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                    </tbody>
+                  </table>
+                </div>
               </li>
             </ul>
 MANAGE_SECTION;

lucidAuth.config.php.example

@@ -18,6 +18,16 @@ return (object) array(
 		// Specify the NetBios name of the domain; to allow users to log on with just their usernames.
 	],
 
+    '2FA'   => [
+        'Protocol'  => 'TOTP',      // Possible options are HOTP (sequential codes) and TOTP (timebased codes)
+        'TOTP'  => [
+            'Secret'    => 'NULL',  // By default, a 512 bits secret is generated. If you need, you can provide your own secret here.
+            'Age'       => '30',    // The duration that each OTP code is valid for.
+            'Length'    => '6',     // Number of digits the OTP code will consist of.
+            'Algorithm' => 'SHA256' // The hashing algorithm used.
+        ],
+    ],
+
 	'Sqlite'	=> [
 		'Path'	=> '../data/lucidAuth.sqlite.db'
 		// Relative path to the location where the database should be stored
@@ -37,6 +47,9 @@ return (object) array(
 		'CrossDomainLogin'	=> False,
 		// Set this to True if SingleSignOn (albeit rudementary) is desired
 		//   (cookies are inheritently unaware of each other; clearing cookies for one domain does not affect other domains)
+        // Important!
+        // If you leave this set to False, the domainname where lucidAuth will be running on,
+        // needs to match the domainname (*ignoring subdomains, if any*) of the resource utilizing the authentication proxy.
 		'CookieDomains'	=> [
 			'domain1.tld' #, 'domain2.tld', 'subdomain.domain3.tld'
 		]

public/images/README.md

@@ -0,0 +1 @@
+Browser logo's obtained from [alrra/browser-logos](https://github.com/alrra/browser-logos).

public/lucidAuth.manage.php

@@ -8,37 +8,73 @@
 	}
 
 	if ($validateTokenResult['status'] === "Success") {
-		include_once('../include/lucidAuth.template.php');
+        if ($_REQUEST['do'] === 'retrievesessions') {
+            $storedTokens = [];
 
-        try {
-        	$allUsers = $pdoDB->query('
-                SELECT User.Id, User.Username, Role.Rolename
-		        FROM User
-	            LEFT JOIN Role
-                    ON (Role.Id = User.RoleId)
-    	    ')->fetchAll(PDO::FETCH_ASSOC);
-        } catch (Exception $e) {
+            $pdoQuery = $pdoDB->prepare('
+                SELECT SecureToken.Id, SecureToken.UserId, SecureToken.Value
+                FROM SecureToken
+                WHERE SecureToken.UserId = :userid
+            ');
+            $pdoQuery->execute([
+                ':userid'	=>	(int) $_REQUEST['userid']
+            ]);
+            foreach($pdoQuery->fetchAll(PDO::FETCH_ASSOC) as $row) {
+                try {
+                    $JWTPayload = JWT::decode($row['Value'], base64_decode($settings->JWT['PrivateKey_base64']), $settings->JWT['Algorithm']);
+                    $storedTokens[] = [
+                        'tid'   => $row['Id'],
+                        'iat'	=> $JWTPayload->iat,
+                        'iss'	=> $JWTPayload->iss,
+                        'fp'    => $JWTPayload->fp
+                    ];
+                } catch (Exception $e) {
+                    // Invalid token
+                    continue;
+                }
+            }
+
+            // Return JSON object
+			header('Content-Type: application/json');
+			echo json_encode([
+				"Result"       => "Success",
+                "SessionCount" => sizeof($storedTokens),
+                "UserSessions" => json_encode($storedTokens)
+			]);
+        } else {
+            // No action requested, default action
+            include_once('../include/lucidAuth.template.php');
+
+            try {
+                $allUsers = $pdoDB->query('
+                    SELECT User.Id, User.Username, Role.Rolename
+                    FROM User
+                    LEFT JOIN Role
+                        ON (Role.Id = User.RoleId)
+                ')->fetchAll(PDO::FETCH_ASSOC);
+            } catch (Exception $e) {
 // Should really do some actual errorhandling here
-            throw new Exception($e);
-        }
-    	foreach($allUsers as $row) {
-            $tableRows[] = sprintf('<tr%1$s><td data-userid="%2$s">%3$s</td><td>%4$s</td><td class="immutable">%5$s</td></tr>',
-                $validateTokenResult['uid'] === $row['Id'] ? ' class="currentuser"': null,
-                $row['Id'],
-                explode('\\', $row['Username'])[1],
-                $row['Rolename'],
-                '<button class="bttn-simple bttn-xs bttn-primary" data-translation="button_sessions">Sessions</button>' . ($validateTokenResult['uid'] === $row['Id'] ? null : '&nbsp;<button class="bttn-simple bttn-xs bttn-primary delete" data-translation="button_delete">Delete</button>')
-            );
-    	}
+                throw new Exception($e);
+            }
+            foreach($allUsers as $row) {
+                $tableRows[] = sprintf('<tr%1$s><td data-userid="%2$s">%3$s</td><td>%4$s</td><td class="immutable">%5$s</td></tr>',
+                    $validateTokenResult['uid'] === $row['Id'] ? ' class="currentuser"': null,
+                    $row['Id'],
+                    explode('\\', $row['Username'])[1],
+                    $row['Rolename'],
+                    '<button class="bttn-simple bttn-xs bttn-primary session" data-translation="button_sessions">Sessions</button>' . ($validateTokenResult['uid'] === $row['Id'] ? null : '&nbsp;<button class="bttn-simple bttn-xs bttn-primary delete" data-translation="button_delete">Delete</button>')
+                );
+            }
 
-        echo sprintf($pageLayout['full_alt'],
-            sprintf($contentLayout['manage']['header'],
-                $validateTokenResult['name']
-            ),
-            sprintf($contentLayout['manage']['section'],
-                implode($tableRows)
-            )
-        );
+            echo sprintf($pageLayout['full_alt'],
+                sprintf($contentLayout['manage']['header'],
+                    $validateTokenResult['name']
+                ),
+                sprintf($contentLayout['manage']['section'],
+                    implode($tableRows)
+                )
+            );
+        }
 	} else {
 		// No cookie containing valid authentication token found;
 		//   explicitly deleting any remaining cookie, then redirecting to loginpage

public/misc/script.index.js

@@ -49,14 +49,19 @@ $(document).ready(function(){
                                         token: data.SecureToken
                                     }))
                                 }
-                            }).done(function() {
+                            }).done(function(_data, _textStatus, jqXHR) {
                                 NProgress.inc(1 / XHR.length);
+                                console.log('CrossDomain login succeeded for domain `' + domain + '` [' + JSON.stringify(jqXHR) + ']');
+                            }).fail(function(jqXHR) {
+                                console.log('CrossDomain login failed for domain `' + domain + '` [' + JSON.stringify(jqXHR) + ')]');
+                                // Should check why this failed (timeout or bad request?), and if this is the origin domain, take action
                             }));
                         });
                         $.when.apply($, XHR).then(function(){
                             $.each(arguments, function(_index, _arg) {
-                                // Finished cross-domain logins (either succesfully or through timeout)
+                                // Finished cross-domain logins (either successfully or through timeout)
                                 NProgress.done();
+                                console.log('CrossDomain login completed; forwarding to `' + data.Location + '`');
                                 window.location.replace(data.Location);
                             });
                         });

public/misc/script.manage.js

@@ -1,7 +1,80 @@
+jQuery.fn.inlineConfirm = function() {
+    return this.on('click', function(event) {
+        sessionID = $(this).data('sessionid');
+//        event.preventDefault();
+        $(this).off('click').parent().empty().append(
+            $('<button>', {
+                text: locales[(localStorage.getItem('language') !== null ? localStorage.getItem('language') : 'en')]['button_yes'],
+                class: 'bttn-simple bttn-xs bttn-primary sessiondeleteconfirm',
+                style: 'margin-right: 3px;',
+                'data-translation': 'button_yes',
+                'data-sessionid': sessionID
+            })).append(
+            $('<button>', {
+                text: locales[(localStorage.getItem('language') !== null ? localStorage.getItem('language') : 'en')]['button_no'],
+                class: 'bttn-simple bttn-xs bttn-primary sessiondeletecancel',
+                'data-translation': 'button_no',
+                'data-sessionid': sessionID
+            })
+        );
+    });
+};
+
 $(document).ready(function(){
     // Initialize the editable-table functionality
     $('#usertable').editableTableWidget();
 
+    // Prevent clicking *through* popup-screens
+    $('#sessions').click(function(event) {
+        event.stopPropagation();
+    });
+    
+    // Add eventhandlers to buttons
+    $('#usertable button.session').click(function() {
+        event.stopPropagation();
+        $('#sessions tbody').empty();
+        $('#sessions').fadeToggle();
+
+        $.post("lucidAuth.manage.php", {
+			do: "retrievesessions",
+			userid: $(this).closest('tr').find('td:nth-child(1)').data('userid')
+		})
+		.done(function(data,_status) {
+			if (data.Result === 'Success') {
+                var Sessions = JSON.parse(data.UserSessions);
+                for (var i = 0; i < data.SessionCount; i++) {
+                    try {
+                        var fingerPrint = JSON.parse(atob(Sessions[i]['fp']));
+                        var sessionDetails = '<img class="browsericon" src="/images/' + fingerPrint['browser'] + '_256x256.png">';
+                        sessionDetails += fingerPrint['browser'] + ' -- ' + fingerPrint['platform'];
+                        sessionDetails += '<br>' + fingerPrint['city'] + ' (' + fingerPrint['countrycode'] + ')';
+                    } catch(e) {
+                        // Do nothing
+                    } 
+                    $('#sessiontable tbody').append($('<tr>')
+                        .append($('<td>', {
+                            text: new Date(Sessions[i]['iat'] * 1000).toLocaleString('en-GB')
+                        }))
+                        .append($('<td>', {
+                            text: Sessions[i]['iss']
+                        }))
+                        .append($('<td>', {
+                            html: sessionDetails ? sessionDetails : ''
+                        }))
+                        .append($('<td>', {
+                            html: $('<button>', {
+                                text: locales[(localStorage.getItem('language') !== null ? localStorage.getItem('language') : 'en')]['button_delete'],
+                                class: 'bttn-simple bttn-xs bttn-primary sessiondelete',
+                                'data-translation': 'button_delete',
+                                'data-sessionid': Sessions[i]['tid']})
+                        }))
+                    );
+                }
+                $('#sessiontable .sessiondelete').inlineConfirm();
+			} else {
+			}
+		});
+    });
     $('#usertable button.delete').click(function() {
         $(this).closest('tr').addClass('removed');
     });
@@ -32,6 +105,9 @@ $(document).ready(function(){
         //   To prevent recreating multiple new editors; reference the already existing `<input>`
         $('#usertable').editableTableWidget({editor: $('#editor')});
         // Add eventhandlers to buttons of newly added `<tr>`
+        $('#usertable .new button.session').unbind().click(function() {
+            console.log('New user, unlikely to have sessions already, lets do nothing for now');
+        });
         $('#usertable .new button.delete').unbind().click(function() {
             $(this).closest('tr').remove();
         });
@@ -92,4 +168,8 @@ console.log({'new': newEntries, 'removed': removedEntries});
 		}
 	});
 
+});
+
+$(document).click(function () {
+    $('#sessions').fadeOut();
 });

public/misc/script.translation.js

@@ -5,9 +5,12 @@ var locales = {
 		button_cancel:				"cancel",
         button_sessions:            "sessions",
 		button_delete:				"delete",
-		button_login:				"login",
+		button_yes:	    			"yes",
+		button_no:			    	"no",
+        button_login:				"login",
 		heading_error:				"ERROR!",
-		label_password:				"Password:",
+        label_password:				"Password:",
+        label_sessions:				"Sessions",
 		label_username:				"Username:",
 		link_logout:				"Logout",
 		span_credentialsavailable:	"Login credentials available upon request!",
@@ -22,9 +25,12 @@ var locales = {
 		button_cancel:				"annuleren",
         button_sessions:            "sessies",
 		button_delete:				"verwijder",
+		button_yes:	    			"ja",
+		button_no:			    	"nee",
 		button_login:				"log in",
 		heading_error:				"FOUT!",
-		label_password:				"Wachtwoord:",
+        label_password:				"Wachtwoord:",
+        label_sessions:				"Sessies",
 		label_username:				"Gebruikersnaam:",
 		link_logout:				"Log uit",
 		span_credentialsavailable:	"Inloggegevens verkrijgbaar op aanvraag!",

public/misc/style.css

@@ -129,6 +129,35 @@ body {
             .main section .buttons button {
                 margin-left: inherit;
             }
+        .main section #sessions {
+			display: none;
+			position: absolute;
+			top: calc(50% - 160px);
+			right: 20%;
+			height: 320px;
+			width: 60%;
+			border: 1px solid rgb(0, 51, 153);
+			box-shadow: black 0px 0px 20px;
+			box-sizing: border-box;
+	    	padding-top: 5px;
+			background: white;
+	    	font-size: inherit;
+            z-index: 99;
+            overflow-y: auto;
+        }
+            .main section #sessions .browsericon {
+                height: 30px;
+                float: left;
+                margin-right: 5px;
+                border: none;
+                filter: drop-shadow(0px 0px 1px #000);
+            }
+            .main section #sessions .sessiondeleteconfirm {
+                background: crimson linear-gradient(0deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.33) 51%) no-repeat center;
+            }
+            .main section #sessions .sessiondeletecancel {
+                background: green linear-gradient(0deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.25) 51%) no-repeat center;
+            }
         .main section table {
             width: 100%;
         }