Initial commit

2023-01-19 16:43:43 +01:00
commit 5efead129e
4 changed files with 143 additions and 0 deletions
--- a/contact.php
+++ b/contact.php
@@ -0,0 +1,84 @@
+<?php
+// Where GnuPG should store keys and other stuff.
+// This directory must be writable by the Apache/NGINX process
+putenv('GNUPGHOME=/home/apache/gnupg');
+
+// The recipient email and a subject line
+$recipient = "me@example.com";
+$subject = "Encrypted form";
+
+//The public PGP key of the recipient
+$key = "-----BEGIN PGP PUBLIC KEY BLOCK-----
+...
+-----END PGP PUBLIC KEY BLOCK-----
+";
+
+// The fingerprint for the above key
+$fingerprint = "...";
+
+
+// The form data from the HTML form
+$name = trim(stripslashes(htmlspecialchars($_POST['name'])));
+$message = trim(stripslashes(htmlspecialchars($_POST['message'])));
+$email = trim(stripslashes(htmlspecialchars($_POST['_replyto'])));
+
+// Check that user has entered a name, an e-mail address and a message
+if (empty($name))
+{
+	echo "No name provided; the message has not been sent\n";
+	exit;
+}
+
+if (empty($email))
+{
+	echo "No email provided; the mssage has not been sent\n";
+	exit;
+}
+
+if (empty($message))
+{
+	echo "No message provided; the message has not been sent\n";
+	exit;
+}
+
+
+// Initialize GnuPG
+$gpg = new gnupg();
+
+// Import the recipient's key
+$gpg->import($key);
+
+// Add the key
+$gpg->addencryptkey($fingerprint);
+
+// Encryt the message 
+$encrypted_message = $gpg->encrypt("Name: $name\nE-mail: $email\n\nMessage: $message");
+
+$headers = 'From: "Contact form" <info@example.com>' . "\r\n" .
+    'Reply-To: info@example.com' . "\r\n" .
+    'Content-Type: text/plain; charset=UTF-8' . "\r\n" .
+    'X-Mailer: PHP/' . phpversion();
+
+
+// Send the mail (this requires a fully working SMTP-server on the host)
+mail($recipient, $subject, $encrypted_message, $headers);
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+      <meta charset="utf-8">
+      <meta http-equiv="X-UA-Compatible" content="IE=edge">
+      <meta name="viewport" content="width=device-width, initial-scale=1">
+      <title>Your message has been sent</title>
+  </head>
+  <body>
+    <h1>Your message has been sent</h1>
+    <p>
+    Thank you for your message<br>
+    <strong><i>Best regards, NNN</i></strong>
+    </p>
+  </body>
+</html>
+