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PHP - User Authentication Using Ip Address
I currently have a User Authentication Script, which when the user successfully logs in generates a cookie, which is there password encrypted using MD5 which is then verified on every page they visit against there password which works great. I am thinking of adding another level of security, when the user logs in there current ip address is recorded then on every page they visit as well as there password been verified there ip is compared against the ip they had when they logged in.
I know that if the user changes there IP they will be logged out, that is fine but is there any other problems which I have not foreseen? is there any reason i should not do this? Thanks for the help Similar Tutorials
User Authentication Help By Using If Elseif And Else Statement And Redirect Page On 3 Differnet Urls
I have had a problem with people attacking my site and trying to gain access to users accounts so i beefed up security, however now users are complaining they keep getting logged out. Here are the variables i use to validate the users and i dont want to strip them down any more can anyone give me any ideas for changing them so its still secure but not so strict as to keep logging the users out? 1. Username & password is encrypted into a cookie and verified on every page they visit. 2. There ip address is recorded on login and is checked against there current ip, on every page they visit via MySql. 3. When the user logs in a unix time stamp (mySql) is generated an updated of every page they visit and if it has not been updated in the last 60 mins the user is logged out. 4.I also generate a random key which is stored in the DB and is passed on every page via GET. 5.If a user tries to login and fails an email is sent to them and if 3 unsuccessful attempts user is locked out for 30mins. Okay, at the moment, when a user logs into my website a token is created. The token is made from a random code, their name and their email. This token is then stored next to their name in the DB. If the user chooses to be remembered, the token is stored as a cookie, otherwise it's stored as a session var. Every time a page is loaded, a comparison is made between the DB token and the session/cookie token to authenticate. HOWEVER, this does not work if the user decides to login from different locations/ip addresses. How would I go about allowing this? Could I created a table and then store the IP address and the token for that IP address? I'm new to this forum, and PHP in general. So, hello to everyone! I'm having a problem verifying whether or not my authentication script works. I'm not new to programming...just PHP. Here it is.. <?php //check if user is already logged in if(isset($_session['username'])) { //init database information $db_server = ""; $db_user = ""; $db_password = ""; $db_name = ""; //connect to the database $connection = mysql_connect($db_server, $db_user, $db_password); if(!$connection) { die('Failed to connect: ' . mysql_error()); } mysql_select_db($db_name, $connection); //verify login information $username = $_POST['username']; $password = $_POST['password']; $query = mysql_query("SELECT * FROM users WHERE username='$username'"); if($query) { $array = mysql_fetch_array($query); if($_POST['password'] = $array['password']) { $_session['username'] = $array['username']; $_session['email'] = $array['email']; $_session['user_level'] = $array['user_level']; $_session['ip'] = $array['ip']; $_session['date_registered'] = $array['date_registered']; echo $_session['username']; } else { echo 'Bad Login Information!'; } } else { die('Failed to login: ' . mysql_error()); } } ?> <form action="auth.php" method="post"> <input name="username" type="text" size="20" maxlength="16"> <input name="password" type="text" size="20" maxlength="20"> <input name="submit" type="submit" value="Submit"> </form> This topic has been moved to Miscellaneous. http://www.phpfreaks.com/forums/index.php?topic=334044.0 Below code is working fine but i need to redirect on 3 different pages and its giving me error. My table structure is as
User table
Email Password
admin@yahoo.com 123
tariq@yahoo.com 987
bilal@yahoo.com 456
if user name is like; admin@yahoo.com the page should redirect on welcome.php
if user name is like; info@aiousoft.com the page should redirect to welcome2.php
and if user doesnot exist in database then give error as ELSE "user doesnot exist"
thanks
signin.php
<html><head><title>Sign In</title></head><body> <?php include 'header.php'; ?> <?php include 'menu.php'; ?> <center> <form method="post" action="checklogin.php"> <h3>Please Signin</h3> <table width="400" border="0"> <tr><td>Email</td> <td><input name="email" type="text" id="email"></td></tr> <tr><td>Password</td> <td><input name="password" type="password" id="password"></td></tr> </table> <p><label> <input type="submit" email="submit" value="Submit"> </label><input email="reset" type="reset"> </p> </form> </center> </body> </html> checklogin.php <html><head><title>Check Login</title></head><body> <?php include 'header.php'; include 'menu.php'; $email=$_POST['email']; $password=$_POST['password']; @ $db = mysql_pconnect('localhost', 'root', ''); if (!$db) { echo 'Error: Could not connect to database. Please try again later.'; exit;} mysql_select_db('car'); $q=mysql_query("select * from user where email='".$email."' and password='".$password."' ") or die(mysql_error()); $res=mysql_fetch_row($q); if($res) { header('location:welcome.php'); } else { echo' Please signin again as your user name and password is not valid'; } ?> </body> </html> Attached Files header.php 284bytes 0 downloads menu.php 308bytes 0 downloads I'm trying to get the screen to print out the users IP address so I've used the following code. echo($_SERVER['REMOTE_ADDR']); However this only prints out "::1". Does anyone know why it's printing this and not a proper IP Address? Thanks I run a small taxi company and use a php form generated user enquiry at the following url http://www.brightonairportcabs.co.uk/bookingform.html. i would like to capture the ip address of the user of my form. I have read lots of ways of doing it but do not understand where to put the code. i have a processor.php file and the webform itself, Please can someone explain how i would go about getting the user ip to stop some spam that i am getting. This is an example of the email i get through from a user submitting the form. Online Booking: Passenger Booking Name: ------ Email: example@email isp Telephone: ----- ------ No of Adults: 2 No of Children: Field question 1: Journey Type: Single-One Way Vehicle Type: 1-4 Passenger, 2-3 Cases + Hand Luggage I wish to be picked up from: Home Address I wish to be dropped at: Heathrow Airport Journey Date 1: 12/24/2011 Journey Date 2: Any Comments, Collection Address, Collection Time, etc: Collection Address: Journey Collection Time: 11am hopefully you can help in easy instructions, please let me know if you need any other information such as the coding from the form itself. many thanks in anticipation Merry Christmas to all users and i am glad i have come across the forum, i will be a regular visitor but cannot probably input any help, although you never know. The html Form I'm using works successfully with this php code:
<?php
//check if form was sent
if($_POST){
$to = 's@hmail.com';
$subject = 'Form1';
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$headers = $name;
$message .= "\r\n\r\n" . $name;
if( empty($_POST["some_place"]) or $_POST['some_place'] != "glory" )
{
header("HTTP/1.0 403 Forbidden");
}else{
mail( $to, $subject, $message, $email, $headers );
}
header('Location: https://.......com');
exit;
}
?>
The problem is that when the email is received it shows the (from) email address to be my domain account user name @ the server name, like this: Any help or suggested remedy will be appreciated I have a form with PHP validation and also a mysqli query checking for duplicates in the database for mailing address and email address in mysql.
It works fine but the customers are adding spaces in the mailing address for example 111 mailing address A V E, 1 1 1 ma iling address A V E etc. and my sql query doesn't see that as an address that's a duplicate.
Their alslo adding email address like my@emailaddress.com and m.y@emailaddress.com, m.y.2@emailaddress.com etc to bypass that comparision also.
Is there anyway to stop this from happening?
I am currently doing the following but wish to change to using JWTs. A webserver is running some CRM system which has its own authentication system and browsers can access public routes without logging and but must log on first to access private routes. All the routes on the webserver which are prefixed by "api" will be forwarded to specific REST API along with an "account" GUID in the header and the user's ID if it exists. For the routes that require a user to be logged in, the webserver will first check if a session exists, and if not make a preliminary GET request to the REST API which includes the GUID as well as the user's ID and encrypted password (both based on the webserver's CRM DB) in the URL. Not sure whether anything is possible by including the hashed password and am currently not doing anything with it. The REST API queries the DB using the GUID and webserver's user ID and returns the REST API's users ID and the webserver stores it in a session. The REST API receives the GUID and potentially the REST API's user ID and queries the DB to retrieve the account and potentially user before executing the route, and returns the response to the webserver which it returns it to the browser.The new approach might be something like the following: Before the webserver forwards any request to the REST API, it checks if a session is set, and if not performs a GET request to the REST API along with the GUID and if known user's credentials in the URL and receives a JWT which contains a payload including the account PK, and potentially the user PK, user's access level, etc. All future requests include this JWT in the header. The REST API no longer queries the DB to get the account ID and user authorized settings as it is provided in the JWT.A couple of questions: What should be done if a non-logged on user first accesses a public route, gets a JWT, and stores it in a session, but then later logs on and accesses a private route? The webserver thinks it has a valid JWT and will send it but the REST API will then decrypt it and find there is no user it. One option is for the webserver to use two sessions, but this sounds kludgy. Or maybe the REST API returns some header which instructs the webserver to re-authenticate, but not sure if even an option, and if so how to cleanly prevent some loop. Also, would it be necessary to issue a new JWT or can the payload in a JWT be changed? Is GET appropriate for requesting the JWT's or should I use some other method? Is it appropriate to include the user's access level in the JWT payload? Will one need to wait until the JWT has expired before their access level changes? Any ideas how to deal with using the user's password on the CRM to also authenticate on the REST API? The GUID is probably secret enough for the application and if an issue, can just use the GUID and username. Am I going down an reasonable path and anything else obvious I should be considering?Thanks! Hi all, I have an authentication part on my website that checks every page through a session variable if a user is logged in and which user it is. When I test my code on my computer it works perfectly registration and login goes smooth but when someone on another computer tries it they get the acces denied page.... does anyone know why??? Greets Ryflex Pardon my noobness, but I'm learning to wrap AJAX into my work and use it to get XML instead of "static" PHP that generates the HTML. The login/security portion has my head spinning, but it's probably not as difficult as I think and I'm probably just confusing myself. In the past, for each PHP page in my site, I would perform a quick salted login check based on the username/password stored in the $_SESSION variables. Perhaps it was a bit overboard to check on each page, but, well, I did it. With AJAX, I *NEED* to ensure that the php resulting from an AJAX POST request won't run if the user isn't authenticated, and I need to ensure that they didn't just somehow force a $_SESSION variable to reflect an authenticated session. I also need to ensure that someone can't just load up the PHP page on it's own, somehow send a POST to it and run it without being authenticated. I suppose that beyond the larger picture of "How do I ensure that the user is authenticated, the POST request is authentic, and nobody has forced a change in the $_SESSION stored on the server, I have a few specific questions. I know that in part I'm confused about the whole cookie/SESSION process. In my old PHP site, the SESSION number was stored on the cookie on the user's machine. If the info is sent via AJAX, does the PHP get the SESSION info from the cookie or does it have to be explicitly sent? With potentially several users sending AJAX requests at the same time, how will my PHP know which SESSION to use for each request? Is is secure enough to set an "Autheticated" flag in $_SESSION once the user is authenticated the first time? Is it really just as simple as sending a username/salted password hash as AJAX/POST and setting an authenticated flag in the SESSION to ensure that the rest of the AJAX application runs without allowing someone to back-door the PHP? Ive put together a PHP/MySQLi login script for my site. However I was wandering: 1. Does Facebook use PHP Cookies or Sessions for their login? (Figured out my own answer ) 2. How does FB set the Cookie/Session so that when I log into facebook.com I am also logged into developers.facebook.com Thanks in advance. Hello everyone, I have a site where users sign up using an email address as their username. I want to be able to verify that their email address is valid without having to send them a confirmation email that they have to click some link in before they are allowed to sign in to the website. Maybe something that pings the email server for a specific address, and if the address is not valid, alert the user to enter a valid address. Does anyone have any ideas or information that you could point me to to assist me with this task? Thanks in advance for any help or ideas. hey guys im after a bit of information regarding user authentication please...
now I have previously save a users session id in my database after they have logged in so when leaving and coming back to the site im able to compare session id's to get username etc...is this still the way or am I now a little old fashioned?
a few more things...do I save information such as username, access level as a session or cookie?...and what is the best way to encrypt passwords please?
thank you
The application that I want to build is quite simple. Here is a bit of the background of the work flow: In my company, we create video for our client profile. After the video is done, we upload the video to our website and to youtube. It is done automatically. After a period of time, the client can delete the video. Of course, it will delete the video in our system as well as the video in youtube. For now, the video in our system is deleted automatically. However, youtube video is deleted manually. Our company has grown to have quite a lot of clients. It's hard for us to keep track clients that requested to delete their videos. We want to be able to have an application that will delete youtube video automatically. I already tried to play around with youtube authentication in http://code.google.com/apis/youtube/2.0/developers_guide_php.html#Authentication but I have no luck with the authentication. I want the application to be able to delete the video under my youtube account without having me to login to youtube. In my case right now, every time the application wants to delete the video, I have to send the request to youtube and ask for verification (i.e. I have to do application verification every time). Here is what I have done so far: ini_set('display_errors', 1); ini_set('log_errors', 1); ini_set('error_log', dirname(__FILE__) . '/error_log.txt'); error_reporting(E_ALL); require_once('db_class.php'); require_once 'Zend/Loader.php'; Zend_Loader::loadClass('Zend_Gdata_YouTube'); Zend_Loader::loadClass('Zend_Gdata_AuthSub'); Zend_Loader::loadClass('Zend_Gdata_App_Exception'); session_start(); setLogging('on'); $_SESSION['developerKey'] = 'AI39si5H3hL9tcKOMl80IqzoC6nb87ka1QLgHxLp9nFi1l44dLa987_Gi0rbofLePQdFEWf1lrSB8KGs4lXIrcF8TR6PhUcO3Q'; function getAuthSubRequestUrl() { $next = 'http://example.com/youtube_delete_video.php'; $scope = 'http://gdata.youtube.com'; $secure = false; $session = true; return Zend_Gdata_AuthSub::getAuthSubTokenUri($next, $scope, $secure, $session); } function updateAuthSubToken($singleUseToken) { try { $sessionToken = Zend_Gdata_AuthSub::getAuthSubSessionToken($singleUseToken); } catch (Zend_Gdata_App_Exception $e) { print 'ERROR - Token upgrade for ' . $singleUseToken . ' failed : ' . $e->getMessage(); return; } $_SESSION['sessionToken'] = $sessionToken; generateUrlInformation(); header('Location: ' . $_SESSION['homeUrl']); } function getAuthSubHttpClient() { try { $httpClient = Zend_Gdata_AuthSub::getHttpClient($_SESSION['sessionToken']); } catch (Zend_Gdata_App_Exception $e) { print 'ERROR - Could not obtain authenticated Http client object. ' . $e->getMessage(); return; } $httpClient->setHeaders('X-GData-Key', 'key='. $_SESSION['developerKey']); return $httpClient; } function generateUrlInformation() { if (!isset($_SESSION['operationsUrl']) || !isset($_SESSION['homeUrl'])) { $_SESSION['operationsUrl'] = 'http://'. $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']; $path = explode('/', $_SERVER['PHP_SELF']); $path[count($path)-1] = 'index.php'; $_SESSION['homeUrl'] = 'http://'. $_SERVER['HTTP_HOST'] . implode('/', $path); } } function loggingEnabled() { if ($_SESSION['logging'] == 'on') { return true; } } function setLogging($loggingOption, $maxLogItems = 10) { switch ($loggingOption) { case 'on' : $_SESSION['logging'] = 'on'; $_SESSION['log_currentCounter'] = 0; $_SESSION['log_maxLogEntries'] = $maxLogItems; break; case 'off': $_SESSION['logging'] = 'off'; break; } } function logMessage($message, $messageType) { if (!isset($_SESSION['log_maxLogEntries'])) { $_SESSION['log_maxLogEntries'] = 20; } if (!isset($_SESSION['log_currentCounter'])) { $_SESSION['log_currentCounter'] = 0; } $currentCounter = $_SESSION['log_currentCounter']; $currentCounter++; if ($currentCounter > $_SESSION['log_maxLogEntries']) { $_SESSION['log_currentCounter'] = 0; } $logLocation = 'log_entry_'. $currentCounter . '_' . $messageType; $_SESSION[$logLocation] = $message; $_SESSION['log_currentCounter'] = $currentCounter; } function printCacheWarning() { return '<p class="note">' . 'Please note that the change may not be reflected in the API ' . 'immediately due to caching.<br/>' . 'Please refer to the API documentation for more details.</p>'; } function editVideoData($videoId) { $httpClient = getAuthSubHttpClient(); $youTubeService = new Zend_Gdata_YouTube($httpClient); $videoEntryToUpdate = $youTubeService->getFullVideoEntry($videoId); if (!$videoEntryToUpdate instanceof Zend_Gdata_YouTube_VideoEntry) { print 'ERROR - Could not find a video entry with id ' . $videoId . '<br />' . printCacheWarning(); return; } try { $putUrl = $videoEntryToUpdate->getEditLink()->getHref(); } catch (Zend_Gdata_App_Exception $e) { print 'ERROR - Could not obtain video entry\'s edit link: ' . $e->getMessage() . '<br />'; return; } $videoEntryToUpdate->setVideoTitle("My Test Movie - Private 10000012"); $videoEntryToUpdate->setVideoDescription("My Test Movie - Private 10000012"); $videoEntryToUpdate->setVideoPrivate(); try { $updatedEntry = $youTubeService->updateEntry($videoEntryToUpdate, $putUrl); if (loggingEnabled()) { logMessage($httpClient->getLastRequest(), 'request'); logMessage($httpClient->getLastResponse()->getBody(), 'response'); } } catch (Zend_Gdata_App_HttpException $httpException) { print 'ERROR ' . $httpException->getMessage() . ' HTTP details<br /><textarea cols="100" rows="20">' . $httpException->getRawResponseBody() . '</textarea><br />' . '<a href="session_details.php">' . 'click here to view details of last request</a><br />'; return; } catch (Zend_Gdata_App_Exception $e) { print 'ERROR - Could not post video meta-data: ' . $e->getMessage(); return; } print 'Entry updated successfully.<br /><a href="#" onclick="' . 'ytVideoApp.presentFeed(\'search_owner\', 5, 0, \'none\'); ' . 'ytVideoApp.refreshSearchResults();" >' . '(refresh your video listing)</a><br />' . printCacheWarning(); } if (!isset($_GET['token'])) { $returnURL = getAuthSubRequestUrl(); echo "<a href=".$returnURL.">Link To Google</a>"; } else { $singleUseToken = $_GET['token']; updateAuthSubToken($singleUseToken); /* editVideoData('mJDRXXaFVGw'); */ } This is how I call the function: http://example.com/youtube_delete_video.php So, what I need basically is to know 1. how can I store the authentication after I verify it from youtube? 2. What function to populate after I store the authentication? <- I couldn't figure where this part is in the documentation. PS: example.com is not a real url. It's just for the sake of writing the post he ) Hi, I'm completely new to LDAP authentication but have managed to get a fairly smooth working script. However, I was wondering what is the easiest way to get a BASEDN from a Fully Qualified Domain Name. At the moment I have a loop which would take: example.com and turn it into dc=examplem,dc=com But is that the best way? |
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