From a68e5c1cfb4c360567fa8480326cae4793b3960c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Gaillard?= <remi.gaillard@prestashop.com>
Date: Mon, 10 Dec 2012 15:06:03 +0100
Subject: [PATCH] [-] Core: Fix Swift and TCPDF for hosting which disallow
 getmypid() php function

---
 classes/Mail.php             | 17 +++++++++++++
 classes/pdf/PDFGenerator.php | 48 +++++++++++++++++++++++++++++++++---
 2 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/classes/Mail.php b/classes/Mail.php
index f8de31491..6571b7820 100644
--- a/classes/Mail.php
+++ b/classes/Mail.php
@@ -226,6 +226,10 @@ class MailCore
 
 			/* Create mail and attach differents parts */
 			$message = new Swift_Message('['.Configuration::get('PS_SHOP_NAME').'] '.$subject);
+
+			/* Set Message-ID - getmypid() is blocked on some hosting */
+			$message->setId(Mail::generateId());
+
 			$message->headers->setEncoding('Q');
 
 			if (Configuration::get('PS_LOGO_MAIL') !== false && file_exists(_PS_IMG_DIR_.Configuration::get('PS_LOGO_MAIL')))
@@ -339,4 +343,17 @@ class MailCore
 
 		return str_replace('"', '&quot;', stripslashes($str));
 	}
+
+	/* Rewrite of Swift_Message::generateId() without getmypid() */
+	protected static function generateId($idstring = null)
+	{
+		$midparams =  array(
+			"utctime" => gmstrftime("%Y%m%d%H%M%S"),
+			"randint" => mt_rand(),
+			"customstr" => (preg_match("/^(?<!\\.)[a-z0-9\\.]+(?!\\.)\$/iD", $idstring) ? $idstring : "swift") ,
+			"hostname" => (isset($_SERVER["SERVER_NAME"]) ? $_SERVER["SERVER_NAME"] : php_uname("n")),
+		);
+		return vsprintf("<%s.%d.%s@%s>", $midparams);
+	}
+	
 }
diff --git a/classes/pdf/PDFGenerator.php b/classes/pdf/PDFGenerator.php
index c8edaf55c..9746cd95a 100755
--- a/classes/pdf/PDFGenerator.php
+++ b/classes/pdf/PDFGenerator.php
@@ -136,9 +136,9 @@ class PDFGeneratorCore extends TCPDF
 			$output = 'D';
 		elseif ($display === false)
 			$output = 'S';
-		elseif (display == 'D')
+		elseif ($display == 'D')
 			$output = 'D';
-		elseif (display == 'S')
+		elseif ($display == 'S')
 			$output = 'S';
 		else 	
 			$output = 'I';
@@ -160,4 +160,46 @@ class PDFGeneratorCore extends TCPDF
 
 		$this->writeHTML($this->content, true, false, true, false, '');
 	}
-}
\ No newline at end of file
+	
+	/**
+	 * Override of TCPDF::getRandomSeed() - getmypid() is blocked on several hosting
+	*/
+	protected function getRandomSeed($seed='') 
+	{
+		$seed .= microtime();
+		if (function_exists('openssl_random_pseudo_bytes') AND (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')) {
+			// this is not used on windows systems because it is very slow for a know bug
+			$seed .= openssl_random_pseudo_bytes(512);
+		} else {
+			for ($i = 0; $i < 23; ++$i) {
+				$seed .= uniqid('', true);
+			}
+		}
+		$seed .= uniqid('', true);
+		$seed .= rand();
+		$seed .= __FILE__;
+		$seed .= $this->bufferlen;
+		if (isset($_SERVER['REMOTE_ADDR'])) {
+			$seed .= $_SERVER['REMOTE_ADDR'];
+		}
+		if (isset($_SERVER['HTTP_USER_AGENT'])) {
+			$seed .= $_SERVER['HTTP_USER_AGENT'];
+		}
+		if (isset($_SERVER['HTTP_ACCEPT'])) {
+			$seed .= $_SERVER['HTTP_ACCEPT'];
+		}
+		if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
+			$seed .= $_SERVER['HTTP_ACCEPT_ENCODING'];
+		}
+		if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+			$seed .= $_SERVER['HTTP_ACCEPT_LANGUAGE'];
+		}
+		if (isset($_SERVER['HTTP_ACCEPT_CHARSET'])) {
+			$seed .= $_SERVER['HTTP_ACCEPT_CHARSET'];
+		}
+		$seed .= rand();
+		$seed .= uniqid('', true);
+		$seed .= microtime();
+		return $seed;
+	}
+}