PHP - Logging In Using Curl To Get Messages

Hi,
I've been semi-teaching myself curl, and I decided to try logging into Facebook with it.
This is what I have so far...

<?PHP
$Email = strip_tags(str_replace(' ', '', $_POST['email']));
$Password = strip_tags(str_replace(' ', '', $_POST['password']));

$FBlogin = 'https://www.facebook.com/login.php?login_attempt=1';

$MoreData = "charset_test=%E2%82%AC%2C%C2%B4%2C%E2%82%AC%2C%C2%B4%2C%E6%B0%B4%2C%D0%94%2C%D0%84&lsd=u2nsf&locale=en_US&email=".urlencode($Email)."&pass=".urlencode($Password)."&default_persistent=0&charset_test=%E2%82%AC%2C%C2%B4%2C%E2%82%AC%2C%C2%B4%2C%E6%B0%B4%2C%D0%94%2C%D0%84&lsd=u2nsf";
$Cookie = "cookie.txt";

$fp = fopen($Cookie,'wb');   

$agent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7";
//login to facebook
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$FBlogin);   
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_COOKIEFILE, $Cookie);
curl_setopt($ch, CURLOPT_COOKIEJAR, $Cookie);
curl_setopt($ch, CURLOPT_REFERER, $FBlogin);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_POSTFIELDS, $MoreData);
       
$Excecute = curl_exec($ch);
echo $Excecute;
?>


Right now I have it echo'ing out to see what's going wrong. I'm getting cookie errors from facebook saying that "I must have cookies enabled".
What could be wrong in my script that would trip such an error?
Thanks.

How is it possible, in PHP, to display an error message next to a form input text field if a user is attempting to submit a form with empty fields? Moreover, how is it possible to remove the same error message when the user fills in the input field with the required data and/or refreshes the page?

I have 2 files that I am working with: application.php and process.php.

application.php mainly has the HTML of the form.
process.php has the PHP for processing and validating the form.

I am very new to learning PHP (I started learning it last week) and I have been searching for hours for a clear answer. I have already tried different methods for generating the error message including: using empty(), !isset, $_POST["name"] = "", etc, and have tried using session_start();, $row, echo, print, and other variables to try and display error message on the page, and I have tried using unset();, and = null, to try and remove the error message once the input field has been filled but all to no avail. Either the method I try only half works, or nothing works, and I cannot pinpoint which is the part that is not working.

I only have 2 files to work with, and as an example of what I want to do is:

1. If the first name field is empty when the user clicks submit, an error message should appear next to the input.
2. If the user fills in the input and clicks submit, the form should be processed and added to the database.
3. When the user returns to the application to page to fill in another application form, the error message should not appear.

Is this possible with PHP?

good day dear community,

i am workin on a Curl loop to fetch multiple pages:

i have some examples - and a question:

Example: If we want to get information from 3 sites with CURL we can do it like so:


$list[1] = "http://www.example1.com";
$list[2] = "ftp://example.com";
$list[3] = "http://www.example2.com";


After creating the list of links we should initialize the cURL multi handle and adding the cURL handles.


$curlHandle = curl_multi_init();
for ($i = 1;$i <= 3; $i++)
 $curl[$i] = addHandle($curlHandle,$list[$i]);


Now we should execute the cURL multi handle retrive the
content from the sub handles that we added to the cURL multi handle.

ExecHandle($curlHandle);
for ($i = 1;$i <= 3; $i++)
{
 $text[$i] =  curl_multi_getcontent ($curl[$i]);
 echo $text[$i];
}

In the end we should release the handles from the cURL multi handle by calling curl_multi_remove_handle and close the cURL multi handle!

If we want to another Fetch of sites with cURL-Multi - since this is the most pretty way to do it!
Well I am not sure bout the string concatenation. How to do it - Note I want to fetch several hundred pages:
see the some details for this target-server sites - /(I have to create a loop over several hundred sites).

    * siteone.example/?show_subsite=9009
    * siteone.example/?show_subsite=9742
    * siteone.example/?show_subsite=9871

.... and so on and so forth Question: How to appy this loop into the array of the curl-multi?



<?php
/************************************\
* Multi interface in PHP with curl  *
* Requires PHP 5.0, Apache 2.0 and  *
* Curl         *
*************************************
* Writen By Cyborg 19671897         *
* Bugfixed by Jeremy Ellman         *
\***********************************/

$urls = array(
   "siteone",
   "sitetwo",
   "sitethree"
   );

$mh = curl_multi_init();

foreach ($urls as $i => $url) {
       $conn[$i]=curl_init($url);
       curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);//return data as string 
       curl_setopt($conn[$i],CURLOPT_FOLLOWLOCATION,1);//follow redirects
       curl_setopt($conn[$i],CURLOPT_MAXREDIRS,2);//maximum redirects
       curl_setopt($conn[$i],CURLOPT_CONNECTTIMEOUT,10);//timeout
       curl_multi_add_handle ($mh,$conn[$i]);
}

do { $n=curl_multi_exec($mh,$active); } while ($active);

foreach ($urls as $i => $url) {
       $res[$i]=curl_multi_getcontent($conn[$i]);
       curl_multi_remove_handle($mh,$conn[$i]);
       curl_close($conn[$i]);
}
curl_multi_close($mh);


print_r($res);

?>





I look forward to your ideas.

I can seem to login it tells me to check my password and username but i dont know the username and password are correct here is my whole code 

<?php
	//start the sessoin
	session_start();
	
	//connect to db
	require "scripts/connect.php";
	
	$username = $_POST['username'];
	$password = $_POST['password'];
	
	$username = mysqli_real_escape_string($db,$username);
	$password = mysqli_real_escape_string($db,$password);

	if(isset($_POST['loginbtn'])){

	if(!empty($username) && !empty($password)){
	
	//sql command
	$getstaff = "SELECT * FROM `users` WHERE `username` = '$username'";
	
	//execute the query 
	$query = mysqli_query($db,$getstaff);
	
	//get the number of rows
	$num_rows = mysqli_num_rows($query);
	
	if($num_rows != 0){
	
	//get the info
	$rows = mysqli_fetch_assoc($query);
	
	//setting the data in indivaul variables
	$dbusername = $rows['username'];
	$dbpassword = $rows['password'];
	
	//getting the password the user enter and making it hash
	//in order for it to match in the database
	$password = md5($password);

	if($dbusername === $username && $dbpassword === $password){
	
		//create the session
		$_SESSION['username'] = $username;
		//redircet them to the control panel
		header("location: controlpanel.php");
	
	}else
		$msg = "Please check your username or password";
	}else
		$msg = "User does not exist";
	}else
		$msg = "Please enter your username and password";
	}
?>

This is where it is giving me a hard time

	if($dbusername === $username && $dbpassword === $password){
	
		//create the session
		$_SESSION['username'] = $username;
		//redircet them to the control panel
		header("location: controlpanel.php");
	
	}else
		$msg = "Please check your username or password";

Any ideas why its not letting me enter

Hi guys,

I got a little bit of an issue. I have a register page, which works fine and submits to itsself, however i also have a login page which currently has no errors but doesnt allow any1 to log in.

If some1 can see why that will be great, as this is causing so many issues. This is the last step i cant get past.

Here is the code
Code: [Select]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Forensics E-learning Package</title>
    <script type="text/javascript" src="start.js"></script>

<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div id="wrapper">
<div id="header">
<div id="toplinks">
   

</div>
  </div>
<div id="menu">
<ul>
<li><a class="selected" href="index.html">Home</a></li>
<li><a href="index.php">Initial Quiz</a></li>
<li><a href="about.php">About</a></li>
            <li><a href="member.php">Member Section</a></li>
     

</ul>
  </div>
<div id="content">
<div id="main">

<h1>Forensics E-Learning Package</h1><BR /></head>
            Login to the User Profiled E-Learning Course which is specifically aimed to raise awareness in computer forensics. 
<?php
$submit =&$_POST['submit'];


if(isset($submit))
{
if($username && sha1($password))
{
$username =&$_POST['username'];
$password =&$_POST['password'];

$_SESSION['$username'] = $username;
$_SESSION['$password'] = sha1($password);

$connect = mysql_connect("localhost","root", "") or die ("Couldn't Connect!");
mysql_select_db("userlogin", $connect) or die("Couldn't find db");

//$con = mysql_connect('userscores.db.7767668.hostedresource.com','userscores','L3tt3r09');
//mysql_select_db('userscores', $con);

$query = mysql_query("SELECT * FROM users WHERE username=' $username'");
$numrows = mysql_num_rows($query);

if ($numrows!=0)
{
//code to login
while ($row = mysql_fetch_assoc($query))
{
$dbusername = $row['username'];
$dbpassword = $row['password'];
$dbscore = $row['score'];
$dbdclty = $row['dclty'];
$dbid = $row['id'];
$dbnewdclty = $row['newdclty'];
}

$_SESSION['id'] = $dbid;
$_SESSION['PreviousScore'] = $dbscore;
$_SESSION['dclty'] = $dbdclty;
$_SESSION['newdclty'] = $dbnewdclty;



if ($username==$dbusername&&sha1($password)==$dbpassword)
{
$username==$dbusername;
}
else
{
echo ("Incorrect Password!");
}
}
else
{
echo("That user doesn't exist!");

}


}
else
{
echo("Please enter a username and password!");
}

echo ("You Successfully Logged In!");
}
else
{
?><BR /><BR /><?php
echo("Please Log In!");

}
if ($submit)
echo "Logged In Successfully!";
?>

<BR /><BR />

<form action='index.php' method='POST'>
        Username:
          <input type='text' name='username'><BR />
        Password:
         <input type='password' name='password'><BR />
        <input type='submit' value='Log In'>
    </form> <p><BR /><BR />
    <a class="button" href='register.php'><span><button class="button" id="save">Register</button></span></a>

</div>
<div id="right">
<h2>Right Menu</h2>
<div class="rightitem">
<ul>
<li><a class="selected" href="index.html">Home</a></li>
<li><a href="index.php">Initial Quiz</a></li>
<li><a href="about.php">About</a></li>
            <li><a href="member.php">Members Area</a></li>
            <li><a href="contact.php">Leave Feedback</a></li>
</ul>
</div>
</div>
  </div>
<div class="clearbottom"></div>
<div id="footer"></div></div>
</body>
</html>
Thanks for any help

Lance