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login.php
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login.php
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<?php
/**
* Login
*
* @author Clay Birkett <clb343@cornell.edu>
* @license http://triticeaetoolbox.org/wheat/docs/LICENSE Berkeley-based
* @link http://triticeaetoolbox.org/wheat/login.php
*/
session_start();
session_regenerate_id();
$root = "//" . $_SERVER['HTTP_HOST'];
$root .= str_replace(basename($_SERVER['SCRIPT_NAME']), "", $_SERVER['SCRIPT_NAME']);
$config['base_url'] = "$root";
$root = preg_replace("/\/\/$/", "/", $root);
$config['root_dir'] = (dirname(__FILE__) . '/');
require 'includes/bootstrap_curator.inc';
require_once 'includes/email.inc';
require_once 'includes/aes.inc';
require_once 'theme/normal_header.php';
require_once 'securimage/securimage.php';
$mysqli = connecti();
?>
<h1>Login/Register</h1>
<div class="section">
<?php
/**
* Return the registraion form fragment.
*
* @param string $msg message to user
* @param string $name user name
* @param string $email user email
* @param string $cemail confirm user email
* @param string $answer response to do you have password
* @param string $institution institution
*
* @return registration form
*/
function HTMLRegistrationForm($msg = "", $name = "", $email = "", $cemail = "", $answer = "no", $institution = "")
{
// ensure that we go back to home..
global $mysqli;
$_SESSION['login_referer_override'] = '/';
$c_no = "";
$c_yes = "";
$c_forgot="";
$c_change="";
if ($answer == "no") {
$c_no = 'checked="checked"';
}
if ($answer == "yes") {
$c_yes = 'checked="checked"';
}
$retval = "";
if (!empty($msg)) {
$retval .= "<div id='form_error'>$msg</div>\n";
}
$sql = "select institutions_name, email_domain from institutions";
$result = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
$domainMap = array();
$email_domain = preg_split('/@/', $email);
$email_domain = $email_domain[1];
while ($row = mysqli_fetch_assoc($result)) {
$edomain = $row['email_domain'];
$iname = $row['institutions_name'];
if ($edomain) {
array_push($domainMap, "'$edomain': '$iname'");
if ($edomain == $email_domain) {
$institution = $iname;
}
}
}
$domainMap = '{' . join(", ", $domainMap) . '}';
$retval .= <<<HTML
<br />
<h2>Registration</h2>
<script type="text/javascript">
function validatePassword(pw) {
if (pw.length < 8) {
alert("Please supply a password of at least 8 characters.");
return false;
}
return true;
}
function guessInstitution(email) {
var dm = $domainMap;
return dm[email.preg_split("/@/")[1]] || "";
}
</script>
<style type="text/css">
table td {padding: 2px;}
</style>
<form action="{$_SERVER['SCRIPT_NAME']}" method="post"
onsubmit="return validatePassword(document.getElementById('password').value);">
<h3>Name</h3>
<label for="name">My name is:</label>
<input type="text" name="name" id="name" value="$name" /><br>
Project participants <b>must</b> give a full name to be approved.
<h3>Email address</h3>
<table border="0" cellspacing="0" cellpadding="0"
style="border: none; background: none">
<tr><td style="border: none; text-align: right;">
<label for="email">My email address is:<label></td>
<td style="border:none;">
<input type="text" name="email" id="email" value="$email" onchange="document.getElementById('institution').value = guessInstitution(document.getElementById('email').value)" />
</td></tr><tr><td style="border: none; text-align: right;">
<label for="cemail">Type it again:</label></td>
<td style="border: none;"><input type="text" name="cemail" id="cemail" value="$cemail" /></td></tr></table>
<h3>Password</h3>
<table border="0" cellspacing="0" cellpadding="0" style="border: none; background: none">
<tr><td style="border: none; text-align: right;">
<label for="password">I want my password to be:</label></td>
<td style="border: none;">
<input type="password" name="password" id="password" /> At least 8 characters.</td></tr>
<tr><td style="border: none; text-align: right;">
<label for="cpassword">Type it again:</label></td>
<td style="border:none;">
<input type="password" name="cpassword" id="cpassword" /></td></tr></table>
<h3>Institution</h3>
<table border="0" cellspacing="0" cellpadding="0" style="border: none; background: none"><tr>
<td style="border: none; text-align: right;">
<label for="institution">My institution is:<label></td>
<td style="border:none;">
<input type="text" name="institution" id="institution"
value="$institution" size="30" /> Required for project participants.
</td></tr></table>
<h3>Are you a project participant?</h3>
<input $c_no type="radio" value="no" name="answer" id="answer_no" />
<label for="answer_no">No</label>
<br />
<input $c_yes type="radio" value="yes" name="answer"
id="answer_yes" />
<label for="answer_yes">Yes</label>
<br />
<table border="0" cellspacing=="0" cellpadding="0"
style="border: none; background: none">
<tr><td><img id="captcha" src="./securimage/securimage_show.php" alt="CAPTCHA image"/>
<a href="#" title="Refresh Image" onclick="document.getElementById('captcha').src = './securimage/securimage_show.php?sid=' + Math.random(); this.blur(); return false">
<img height="32" width="32" src="./securimage/images/refresh.png" alt="Refresh Image" onclick="this.blur()" /></a>
<tr><td>Type the text:
<input type="text" name="captcha_code" size="10"
maxlength="6"></td></tr></table>
</table>
<br />
<br />
<input type="submit" name="submit_registration" value="Register" />
</form>
HTML;
return $retval;
}
/**
* Return the login form fragment.
*
* @param string $msg message to user
*
* @return registration form form
*/
function HTMLLoginForm($msg = "")
{
$email = "";
if (isset($_GET['e']) && !empty($_GET['e'])) {
$email = base64_decode($_GET['e']);
}
$c_no = "";
$c_yes = "checked=\"checked\"";
if (isset($_GET['a']) && !empty($_GET['a'])) {
$c_no = "";
$c_yes = "checked=\"checked\"";
}
$retval = "";
if (!empty($msg)) {
$retval .= "<div id='form_error'>$msg</div>";
}
global $config;
$dir = explode("/", $config['root_dir']);
// Pop twice.
$crop = array_pop($dir);
$crop = array_pop($dir);
$retval .= <<<HTML
<form action="{$_SERVER['SCRIPT_NAME']}" method="post">
<h3>Why Register?</h3>
<b>Participants</b>
<ul>
<li>have pre-release access to all phenotype and genotype data from the project.
</ul>
<b>All Registered Users</b>
<ul>
<li>can create private germplasm line panels. (<a href="http://malt.pw.usda.gov/t3/barley/curator_data/tutorial/T3_line_panels.pdf">Tutorial</a>)
<li>can use the "Current Selections" they created during the previous session.
</ul>
<h3>What is your email address?</h3>
My email address is:
<input type="text" name="email" value="$email" />
<h3>Do you have a password?</h3>
<input id="answer_yes" $c_yes type="radio" name="answer" value="yes" />
<label for="answer_yes">Yes, I have a password:</label>
<input type="password" name="password" onfocus="$('answer_yes').checked = true"/>
<br />
<input id="answer_no" $c_no type="radio" name="answer" value="no" />
<label for="answer_no">No, I am a new user.</label>
<br />
<input id="answer_forgot" $c_forgot type="radio" name="answer" value="forgot" />
<label for="answer_forgot">I forgot my password.</label>
<br />
<input id="answer_change" $c_change type="radio" name="answer" value="change" />
<label for="answer_change">I want to change my password.</label>
<br />
<br />
<input type="submit" name="submit_login" value="Continue" />
</form>
HTML;
return $retval;
}
/**
* Return the html fragment associated with successful login.
*
* @return null
*/
function HTMLLoginSuccess()
{
// DEM jul2014: Don't return to the previous page. It might be the "Access Denied"
// page which would be confusing.
//$url = (isset($_SESSION['login_referer'])) ? $_SESSION['login_referer'] : 'index.php';
global $config;
$url = $config['base_url']."index.php";
return <<< HTML
<p>You have been logged in. Welcome!
<p><input type='Button' value='Proceed' onClick='window.location.assign("$url")'>
<meta http-equiv="refresh" content="2;url=$url" />
HTML;
}
/**
* Return the html fragment associated with successful registration.
*/
function HTMLRegistrationSuccess($name, $email)
{
$_SESSION['login_referer_override'] = '/';
$em = $email;
$email = base64_encode($email);
return <<< HTML
<p>Welcome, $name. You are being registered. An email has been sent to
$em describing how to confirm your registration.
<!--
Please wait while you are being redirected to login page
or click <a href="{$_SERVER['SCRIPT_NAME']}">here</a>.</p>
<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />
<meta http-equiv="refresh" content="2;url={$_SERVER['SCRIPT_NAME']}"/>
-->
HTML;
}
/**
* Check if the given user/password pair belongs to a properly
* registered user that can be logged in.
*/
function isUser($email, $pass)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql_pass = mysqli_real_escape_string($mysqli, $pass);
$public_type_id = USER_TYPE_PUBLIC;
$sql = "select * from users where users_name = SHA1('$sql_email') and
pass = SHA1('$sql_pass') and (abs(email_verified) > 0 or
user_types_uid=$public_type_id) limit 1";
$query = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
return mysqli_num_rows($query) > 0;
}
/**
* Check if the given user/passrod pair belongs to a old account.
*/
function isOldUser($email, $pass)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql_pass = mysqli_real_escape_string($mysqli, $pass);
$public_type_id = USER_TYPE_PUBLIC;
$sql = "select * from users where users_name = '$sql_email' and
pass = MD5('$sql_pass') and (abs(email_verified) > 0 or
user_types_uid=$public_type_id) limit 1";
$query = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
return mysqli_num_rows($query) > 0;
}
/**
* Check if the user+password confirmed his email.
*/
function isVerified($email)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql = "select email_verified from users where
users_name = SHA1('$sql_email')";
$r = mysqli_query($mysqli, $sql);
$row = mysqli_fetch_assoc($r);
if ($row) {
return $row['email_verified'];
}
return false;
}
/**
* See if the password is right for the user.
*/
function passIsRight($email, $pass)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql_pass = mysqli_real_escape_string($mysqli, $pass);
$sql = "select pass=SHA1('$sql_pass') as passIsRight from users
where users_name = SHA1('$sql_email')";
$r = mysqli_query($mysqli, $sql);
$row = mysqli_fetch_assoc($r);
if ($row) {
return $row['passIsRight'];
}
return false;
}
/**
* See if the given email belongs to a registered user at all.
*/
function isRegistered($email)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql = "select * from users where users_name = SHA1('$sql_email')";
$query = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
return mysqli_num_rows($query) > 0;
}
/**
* See if the given email belongs to a old account.
*/
function isOldRegistered($email)
{
global $mysqli;
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql = "select * from users where users_name = '$sql_email'";
$query = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
return mysqli_num_rows($query) > 0;
}
/**
* Process the login attempt and return the appropriate html
* fragment re that
*/
function HTMLProcessLogin()
{
global $mysqli;
$email = $_POST['email'];
$password = $_POST['password'];
$rv = '';
if (!isRegistered($email)) {
$rv = HTMLLoginForm("Address <b>'$email'</b> has not registered in this T3 database.");
} elseif (!isVerified($_POST['email'])) {
$rv = HTMLLoginForm(
"You cannot login until you confirm your email address, using the link was sent to you at the time of registration.
<form action=\"{$_SERVER['SCRIPT_NAME']}\" method=\"post\">
<input type=\"hidden\" name=\"email\" value=\"$email\">
<input type=\"submit\" name=\"resend_registration\" value=\"Send Register\" />
</form>"
);
} else {
if (isUser($email, $password)) {
// Successful login
$_SESSION['username'] = $email;
$sql = "SELECT SHA1(\"$password\") AS password";
$res = mysqli_query($mysqli, $sql) or die("SQL Error hashing password\n");
if ($row = mysqli_fetch_assoc($res)) {
$password = $row['password'];
$_SESSION['password'] = $row['password'];
} else {
die("SQL Error hashing password\n");
}
// Store user_types_uid in $_SESSION.
$sql = "select users_uid, user_types_uid, name from users where users_name = SHA1('$email')";
$res = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli));
$row = mysqli_fetch_row($res);
$_SESSION['userid'] = $row[0];
$_SESSION['usertype'] = $row[1];
$_SESSION['name'] = $row[2];
$sql = "update users set lastaccess = now() where
users_name = '$email'";
mysqli_query($mysqli, $sql) or die("<pre>" . mysqli_error($mysqli) . "\n\n\n$sql.</pre>");
// Retrieve stored selection of lines, markers and maps.
$stored = retrieve_session_variables('selected_lines', $email);
if (-1 != $stored) {
$_SESSION['selected_lines'] = $stored;
}
$stored = retrieve_session_variables('clicked_buttons', $email);
if (-1 != $stored) {
$_SESSION['clicked_buttons'] = $stored;
}
$stored = retrieve_session_variables('mapids', $email);
if (-1 != $stored) {
$_SESSION['mapids'] = $stored;
}
$rv = HTMLLoginSuccess();
} else {
if (!passIsRight($_POST['email'], $_POST['password'])) {
$rv = HTMLLoginForm("You entered an incorrect e-mail/password combination. Please, try again.");
} else {
$rv = HTMLLoginForm("Login failed for unknown reason.");
}
}
}
return $rv;
}
/**
* Process registration attempt and return appropriate html fragment
*/
function HTMLProcessRegistration()
{
if (isRegistered($_POST['email'])) {
return HTMLLoginForm("That e-mail address already has an account associated with it. Please, try again.");
} else {
return HTMLRegistrationForm("", "", $_POST['email'], "", $_POST['answer'], $_POST['institution']);
}
}
/**
* Process forgotten password situation and return appropriate html
* fragment.
*/
function HTMLProcessForgot()
{
global $root;
// ensure that we go back to home..
$_SESSION['login_referer_override'] = '/';
$email = $_POST['email'];
if (isRegistered($email)) {
$key = setting('passresetkey');
$urltoken = urlencode(AESEncryptCtr($email, $key, 128));
send_email($email, "T3: Reset Your Password",
"Hi,
Per your request, please visit the following URL to reset your password:
https:{$root}resetpass.php?token=$urltoken");
return "An email has been sent to you with a link to reset your
password.";
} else {
return "<h3 style='color: red'>No such user, please register.</h3>";
}
}
/**
* Process password change situation and return appropriate html
* fragment
*/
function HTMLProcessChange()
{
global $mysqli;
$_SESSION['login_referer_override'] = '/';
$email = $_POST['txt_email'];
$pass = $_POST['OldPass'];
$rv = "";
if (isset($email)) {
if (isUser($email, $pass)) {
if ($_POST['NewPass1'] == $_POST['NewPass2']) {
$sql_email = mysqli_real_escape_string($mysqli, $email);
$sql_pass = mysqli_real_escape_string($mysqli, $_POST['NewPass1']);
$sql = "update users set pass=SHA1('$sql_pass')
where users_name=SHA1('$sql_email')";
if (mysqli_query($mysqli, $sql)) {
$rv .= "<h3>Password successfully updated</h3>";
} else {
$rv .= "<div id='form_error'>unexpected error while updating your password..</div>";
}
} else {
$rv .= "<div id='form_error'>the two values you provided do not match..</div>";
}
} else {
$rv .= "<div id='form_error'>username/password pair not recognized</div>";
}
} else {
$rv .= <<<HTML
<form action="{$_SERVER['SCRIPT_NAME']}" method="post">
<input type="hidden" name="answer" value="change">
<input type="hidden" name="submit_login" value="">
Email ID: <input name= "txt_email" type="text" value="{$email}">
<br />Old Password: <input name = "OldPass" type="password">
<br /><br />
New Password: <input name="NewPass1" type="password"><br />
Retype New Password: <input name="NewPass2" type="password">
<br />
<input name="cmd_submit" type="submit" value="Submit">
</form>
HTML;
}
return $rv;
}
if (isset($_POST['submit_login'])) {
if (isset($_POST['answer'])) {
if ($_POST['answer'] == "no") {
echo HTMLProcessRegistration();
} elseif ($_POST['answer'] == "yes") {
echo HTMLProcessLogin();
} elseif ($_POST['answer'] == "forgot") {
echo HTMLProcessForgot();
} elseif ($_POST['answer'] == "change") {
echo HTMLProcessChange();
} else {
echo HTMLLoginForm();
}
} else {
echo HTMLLoginForm();
}
} elseif (isset($_POST['resend_registration'])) {
$email = $_POST['email'];
if (empty($email)) {
$error = true;
$error_msg .= "- You must provide your e-mail addresses.\n";
} else {
$safe_email = mysqli_real_escape_string($mysqli, $email);
$safe_password = mysqli_real_escape_string($mysqli, $password);
$safe_name = mysqli_real_escape_string($mysqli, $name);
$sql = "SELECT SHA1('$safe_password') AS password";
$res = mysqli_query($mysqli, $sql) or die("SQL Error hashing password\n");
if ($row = mysqli_fetch_assoc($res)) {
$hash_password = $row['password'];
} else {
die("SQL Error hashing password\n");
}
$sql = "SELECT SHA1('$safe_email') AS email";
$res = mysqli_query($mysqli, $sql) or die("SQL Error hashing email\n");
if ($row = mysqli_fetch_assoc($res)) {
$hash_email = $row['email'];
} else {
die("SQL Error hashing email\n");
}
$key = setting('encryptionkey');
$urltoken = urlencode(AESEncryptCtr($email, $key, 128));
send_email($email, "T3 registration in progress",
"Thank you for requesting an account on T3.
To complete your registration, please confirm that you requested it
by visiting the following URL:
https:{$root}fromemail.php?token=$urltoken
Your registration will be complete when you have performed this step.
Sincerely,
The Triticeae Toolbox Team
");
}
echo HTMLRegistrationSuccess($name, $email);
} elseif (isset($_POST['submit_registration'])) {
$name = $_POST['name'];
$email = $_POST['email'];
$cemail = $_POST['cemail'];
$password = $_POST['password'];
$cpassword = $_POST['cpassword'];
$answer = $_POST['answer'];
$institution = $_POST['institution'];
$error = false;
$error_msg = "";
if (empty($name)) {
$error = true;
$error_msg .= "- You must provide your name.\n";
}
if (empty($email)) {
$error = true;
$error_msg .= "- You must provide your e-mail addresses.\n";
}
else {
if (empty($cemail) || $email != $cemail) {
$error = true;
$error_msg .= "- The e-mail address you provided don't match.\n";
}
}
if (empty($password)) {
$error = true;
$error_msg .= "- You must provide a password.\n";
}
else {
if (empty($cpassword) || $password != $cpassword) {
$error = true;
$error_msg .= "- The passwords you provided don't match.\n";
}
}
$securimage = new Securimage();
if (!$securimage->check($_POST['captcha_code'])) {
$error = true;
$error_msg .= "- Please enter the CAPTCHA code correctly.\n";
}
if (isRegistered($_POST['email'])) {
$error = true;
$error_msg .= "That e-mail address already has an account associated with it. Please, try again.";
}
if ($error) {
echo HTMLRegistrationForm($error_msg, $name, $email, $cemail,
$answer, $institution);
} else {
$safe_email = mysqli_real_escape_string($mysqli, $email);
$safe_password = mysqli_real_escape_string($mysqli, $password);
$safe_name = mysqli_real_escape_string($mysqli, $name);
$sql = "SELECT SHA1('$safe_password') AS password";
$res = mysqli_query($mysqli, $sql) or die("SQL Error hashing password\n");
if ($row = mysqli_fetch_assoc($res)) {
$hash_password = $row['password'];
} else {
die("SQL Error hashing password\n");
}
$sql = "SELECT SHA1('$safe_email') AS email";
$res = mysqli_query($mysqli, $sql) or die("SQL Error hashing email\n");
if ($row = mysqli_fetch_assoc($res)) {
$hash_email = $row['email'];
} else {
die("SQL Error hashing email\n");
}
$safe_institution = $institution ? "'" . mysqli_real_escape_string($mysqli, $institution) . "'" : 'NULL';
$desired_usertype = ($answer == 'yes' ? USER_TYPE_PARTICIPANT :
USER_TYPE_PUBLIC);
/* DEM jan2014 For Sandbox databases, make any registrant a Curator. */
if (preg_match("/sandbox/", $_SERVER['SERVER_NAME'])) {
$safe_usertype = USER_TYPE_CURATOR;
$desired_usertype = USER_TYPE_CURATOR;
} elseif (preg_match("/malt\.pw\.usda/" , $_SERVER['SERVER_NAME'])) {
$safe_usertype = USER_TYPE_CURATOR;
$desired_usertype = USER_TYPE_CURATOR;
} else {
$safe_usertype = USER_TYPE_PUBLIC;
}
$sql = "insert into users (user_types_uid, users_name, pass,
name, email, institution, created_on) values ($safe_usertype, '$hash_email',
'$hash_password', '$safe_name', '$hash_email',
$safe_institution, now())";
mysqli_query($mysqli, $sql) or die("<pre>" . mysqli_error($mysqli) .
"\n\n\n$sql</pre>");
$key = setting('encryptionkey');
$urltoken = urlencode(AESEncryptCtr($email, $key, 128));
send_email($email, "T3 registration in progress",
"Dear $name,
Thank you for requesting an account on T3.
To complete your registration, please confirm that you requested it
by visiting the following URL:
https:{$root}fromemail.php?token=$urltoken
Your registration will be complete when you have performed this step.
Sincerely,
The Triticeae Toolbox Team
");
/* DEM jan2014 For Sandbox databases, don't require confirmation by tht_curator. */
if ($desired_usertype == USER_TYPE_PARTICIPANT) {
$capkey = setting('capencryptionkey');
$capurltoken = urlencode(AESEncryptCtr($email, $capkey, 128));
send_email(setting('capmail'),
"[T3] Validate Participant $email",
"Email: $email
Name: $name
Institution: $institution
Please use the following link to confirm or reject participant status
of this user:
https:{$root}fromcapemail.php?token=$capurltoken
A message has been sent to the user that he must confirm his email
address at
https:{$root}fromemail.php?token=$urltoken
");
}
echo HTMLRegistrationSuccess($name, $email);
}
}
else {
$referer = @(isset($_SESSION['login_referer_override'])) ?
$_SESSION['login_referer_override'] : $_SERVER['HTTP_REFERER'];
if (!empty($referer) &&
stripos($referer, $_SERVER['HTTP_HOST']) !== FALSE)
$_SESSION['login_referer'] = $referer;
unset($_SESSION['login_referer_override']);
echo HTMLLoginForm();
}
?>
</div>
<?php
$footer_div = 1;
require 'theme/footer.php';