Source Code : Usernames and Passwords Are Checked Against Data in a File

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Usernames and Passwords Are Checked Against Data in a File

 
<?php
if (isset($_SERVER["PHP_AUTH_USER"])) {
  $user = $_SERVER["PHP_AUTH_USER"];
  $pass = $_SERVER["PHP_AUTH_PW"];
} elseif (isset($_SERVER["HTTP_AUTHORIZATION"])) {
  if (substr($_SERVER["HTTP_AUTHORIZATION"], 0, 5) == "Basic") {
    $userpass = split(":",
      base64_decode(substr($_SERVER["HTTP_AUTHORIZATION"], 6)));
    $user = $userpass[0];
    $pass = $userpass[1];
  }
}

$auth = false;
$pwfile = fopen("users.txt", "r");
while (!feof($pwfile)) {
  $data = split(":", rtrim(fgets($pwfile, 1024)));
  if ($user == $data[0] && crypt($pass, "pw") == $data[1]) {
    $auth = true;
    break;
  }
}
fclose($pwfile);

if (!$auth) {
  header("WWW-Authenticate: Basic realm="PHP"");
  header("HTTP/1.0 401 Unauthorized");
} else {
  echo("Welcome, $user!");
}
?>
  
  

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