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mauromarano/contact.php

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Una contact page con twitter bootstrap e recaptcha
Raw
contact.php
<?php
/**
*
* Author: Mauro Marano
* eMail: http://www.mauromarano.it/contact.php
* Date: 13/11/2012
*
* Prima di iniziare
* =================
*
* 1) Dovete avere un account recaptcha per il captcha.
* Potete fare un account **gratuito** su http://www.google.com/recaptcha
*
* 2) Impostate la vostra chiave pubblica e privata nelle variabili sotto stanti
*
* 3) Impostate l'indirizzo email su cui volete recapitare le email
*
* 4) Impostate il titolo della pagina
*
* 5) Inserite nella stessa cartella di questo file la libreria recaptchalib.php
*
* 6) Enjoy ;)
*
* Credits
* -------
* Un ringraziamento a Fabio (oscurodrago.it) per un aiuto sugli header
*
*
*
* CONTATTI
* ========
* http://www.mauromarano.it/contact.php
*
*/
require_once'recaptchalib.php';
$to_email = '[email protected]';
$page_titlte = 'My Own Site - Contact Form';
$publickey = "";
$privatekey = "";
$error = false;
$sent = false;
// elimina apici e spazi vuoti
function clear($var){
return stripslashes(trim($var));
}
// funzione che invia la email
function email2($to, $title, $text, $from_email, $from_name ){
// costruiamo alcune intestazioni generali
$header = "From: ".$from_name." <".$from_email.">\n";
$header .= "X-Mailer: Il nostro Php\n";
// costruiamo le intestazioni specifiche per il formato HTML
$header .= "MIME-Version: 1.0\n";
$header .= "Content-Type: text/html; charset=\"iso-8859-1\"\n";
$header .= "Content-Transfer-Encoding: 7bit\n\n";
// inviamo il messaggio di posta elettronica
// controllando eventuali errori
return @mail($to, $title, $text, $header);
}
function random_string($length) {
$string = "";
// genera una stringa casuale che ha lunghezza
// uguale al multiplo di 32 successivo a $length
for ($i = 0; $i <= ($length/32); $i++)
$string .= md5(time()+rand(0,99));
// indice di partenza limite
$max_start_index = (32*$i)-$length;
// seleziona la stringa, utilizzando come indice iniziale
// un valore tra 0 e $max_start_point
$random_string = substr($string, rand(0, $max_start_index), $length);
return $random_string;
}
if(isset($_POST['submit'])){
$resp = recaptcha_check_answer ($privatekey,$_SERVER["REMOTE_ADDR"],$_POST["recaptcha_challenge_field"],$_POST["recaptcha_response_field"]);
if (!$resp->is_valid) {
$error = true;
$error_message = 'Inserisci il codice di verifica in maniera corretta.';
}
else{
if($_POST['name']!=='' && $_POST['lastname']!=='' && $_POST['email']!=='' && $_POST['subject']!=='' && $_POST['message']!==''){
$name = clear($_POST['name']);
$lastname = clear($_POST['lastname']);
$from_email = clear($_POST['email']);
$subject = clear($_POST['subject']);
$message = clear($_POST['message']);
if(strlen($name)>=3){
if(strlen($lastname)>=3){
if(preg_match('/([\w-\.]+)@((?:[\w]+\.)+)([a-zA-Z]{2,4})/',$from_email)==1){
if(strlen($subject)>=6){
if(strlen($message)>=30){
$result = email2($to_email, $subject, $message, $from_email, $name);
$sent = true;
}
else{
$error = true;
$error_message = 'Il messaggio deve essere di almeno 30 caratteri.';
}
}
else{
$error = true;
$error_message = 'L\' oggetto del messaggio deve essere di almeno 6 caratteri.';
}
}
else{
$error = true;
$error_message = 'L\'indirizzo email non e\' un indirizzo valido.';
}
}
else{
$error = true;
$error_message = 'Il cognome deve essere minimo 3 carateri.';
}
}
else{
$error = true;
$error_message = 'Il nome deve essere minimo 3 caratteri.';
}
}
else{
$error = true;
$error_message = 'Devi compilare tutti i campi!';
}
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Mauro's Page - Contact Form</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<!-- Le styles -->
<!-- Twitter bootstrap css -->
<link rel="stylesheet" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap.css">
<style>
body {
padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */
}
</style>
<!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<body>
<div class="container-fluid">
<div class="row-fluid">
<div class="span6 offset3 well">
<?php
if($error == true){
?>
<div class="span12 alert alert-error" id="notification">
<strong>Errore!</strong>
<p><?= $error_message ?></p>
</div>
<?
}
elseif($sent == true){
?>
<div class="span12 alert alert-success" id="notification">
<strong>Tutto ok!</strong>
<p>Complimenti, l'email che volevi mandare è stata correttamente inviata. Risponderemo alla tua email appena possibile!</p>
</div>
<?
}
?>
<form action="" method="POST">
<legend>Contattami</legend>
<label for="name">Nome:</label>
<input type="text" name="name">
<label for="lastname">Cognome:</label>
<input type="text" name="lastname">
<label for="email">Tuo indirizzo eMail:</label>
<input type="text" name="email">
<label for="subject">Oggetto:</label>
<input type="text" name="subject">
<label for="message">Messaggio:</label>
<textarea class="field span12" id="textarea" rows="6" placeholder="Scrivi qua il tuo messaggio!" name="message"></textarea>
<br>
<!-- recaptcha -->
<? echo recaptcha_get_html($publickey);?>
<!-- end recaptcha -->
<hr>
<input type="submit" value="Invia eMail !" class="btn btn-primary" name="submit" id="submit">
</form>
<div id="wait" style="display:none;">
<div class="progress progress-striped active">
<div class="bar" style="width: 100%;"></div>
</div>
<small>Stiamo inviando la tua email, un attimo di pazienza!</small>
</div>
</div>
</div>
</div> <!-- /container -->
<!-- Le javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<!-- Link alla libreria jquery -->
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
<script type="text/javascript">
$('#submit').on('click', function() {
$('#notification').hide();
$('#wait').show();
});
</script>
</body>
</html>
Raw
recaptchalib.php
<?php
/*
* This is a PHP library that handles calling reCAPTCHA.
* - Documentation and latest version
* http://recaptcha.net/plugins/php/
* - Get a reCAPTCHA API Key
* https://www.google.com/recaptcha/admin/create
* - Discussion group
* http://groups.google.com/group/recaptcha
*
* Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
* AUTHORS:
* Mike Crawford
* Ben Maurer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* The reCAPTCHA server URL's
*/
define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
/**
* Encodes the given data into a query string format
* @param $data - array of string elements to be encoded
* @return string - encoded request
*/
function _recaptcha_qsencode ($data) {
$req = "";
foreach ( $data as $key => $value )
$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
// Cut the last '&'
$req=substr($req,0,strlen($req)-1);
return $req;
}
/**
* Submits an HTTP POST to a reCAPTCHA server
* @param string $host
* @param string $path
* @param array $data
* @param int port
* @return array response
*/
function _recaptcha_http_post($host, $path, $data, $port = 80) {
$req = _recaptcha_qsencode ($data);
$http_request = "POST $path HTTP/1.0\r\n";
$http_request .= "Host: $host\r\n";
$http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
$http_request .= "Content-Length: " . strlen($req) . "\r\n";
$http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
$http_request .= "\r\n";
$http_request .= $req;
$response = '';
if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
die ('Could not open socket');
}
fwrite($fs, $http_request);
while ( !feof($fs) )
$response .= fgets($fs, 1160); // One TCP-IP packet
fclose($fs);
$response = explode("\r\n\r\n", $response, 2);
return $response;
}
/**
* Gets the challenge HTML (javascript and non-javascript version).
* This is called from the browser, and the resulting reCAPTCHA HTML widget
* is embedded within the HTML form it was called from.
* @param string $pubkey A public key for reCAPTCHA
* @param string $error The error given by reCAPTCHA (optional, default is null)
* @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
* @return string - The HTML to be embedded in the user's form.
*/
function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
{
if ($pubkey == null || $pubkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
}
if ($use_ssl) {
$server = RECAPTCHA_API_SECURE_SERVER;
} else {
$server = RECAPTCHA_API_SERVER;
}
$errorpart = "";
if ($error) {
$errorpart = "&amp;error=" . $error;
}
return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
<noscript>
<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
</noscript>';
}
/**
* A ReCaptchaResponse is returned from recaptcha_check_answer()
*/
class ReCaptchaResponse {
var $is_valid;
var $error;
}
/**
* Calls an HTTP POST function to verify if the user's guess was correct
* @param string $privkey
* @param string $remoteip
* @param string $challenge
* @param string $response
* @param array $extra_params an array of extra variables to post to the server
* @return ReCaptchaResponse
*/
function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
{
if ($privkey == null || $privkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
}
if ($remoteip == null || $remoteip == '') {
die ("For security reasons, you must pass the remote ip to reCAPTCHA");
}
//discard spam submissions
if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
$recaptcha_response = new ReCaptchaResponse();
$recaptcha_response->is_valid = false;
$recaptcha_response->error = 'incorrect-captcha-sol';
return $recaptcha_response;
}
$response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify",
array (
'privatekey' => $privkey,
'remoteip' => $remoteip,
'challenge' => $challenge,
'response' => $response
) + $extra_params
);
$answers = explode ("\n", $response [1]);
$recaptcha_response = new ReCaptchaResponse();
if (trim ($answers [0]) == 'true') {
$recaptcha_response->is_valid = true;
}
else {
$recaptcha_response->is_valid = false;
$recaptcha_response->error = $answers [1];
}
return $recaptcha_response;
}
/**
* gets a URL where the user can sign up for reCAPTCHA. If your application
* has a configuration page where you enter a key, you should provide a link
* using this function.
* @param string $domain The domain where the page is hosted
* @param string $appname The name of your application
*/
function recaptcha_get_signup_url ($domain = null, $appname = null) {
return "https://www.google.com/recaptcha/admin/create?" . _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
}
function _recaptcha_aes_pad($val) {
$block_size = 16;
$numpad = $block_size - (strlen ($val) % $block_size);
return str_pad($val, strlen ($val) + $numpad, chr($numpad));
}
/* Mailhide related code */
function _recaptcha_aes_encrypt($val,$ky) {
if (! function_exists ("mcrypt_encrypt")) {
die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
}
$mode=MCRYPT_MODE_CBC;
$enc=MCRYPT_RIJNDAEL_128;
$val=_recaptcha_aes_pad($val);
return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
}
function _recaptcha_mailhide_urlbase64 ($x) {
return strtr(base64_encode ($x), '+/', '-_');
}
/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
function recaptcha_mailhide_url($pubkey, $privkey, $email) {
if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
"you can do so at <a href='http://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
}
$ky = pack('H*', $privkey);
$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
}
/**
* gets the parts of the email to expose to the user.
* eg, given johndoe@example,com return ["john", "example.com"].
* the email is then displayed as [email protected]
*/
function _recaptcha_mailhide_email_parts ($email) {
$arr = preg_split("/@/", $email );
if (strlen ($arr[0]) <= 4) {
$arr[0] = substr ($arr[0], 0, 1);
} else if (strlen ($arr[0]) <= 6) {
$arr[0] = substr ($arr[0], 0, 3);
} else {
$arr[0] = substr ($arr[0], 0, 4);
}
return $arr;
}
/**
* Gets html to display an email address given a public an private key.
* to get a key, go to:
*
* http://www.google.com/recaptcha/mailhide/apikey
*/
function recaptcha_mailhide_html($pubkey, $privkey, $email) {
$emailparts = _recaptcha_mailhide_email_parts ($email);
$url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
"' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
}
?>
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