Sendmail backend for the deliver class

class/deliver/Deliver_SendMail.class.php

@@ -4,5 +4,27 @@ require_once('Deliver.class.php');
 
 class Deliver_SendMail extends Deliver {
 
+    function preWriteToStream(&$s) {
+       if ($s) {
+          if ($s{0} == '.')   $s = '.' . $s;
+    	  $s = str_replace("\n.","\n..",$s);
+          $s = str_replace("\r\n", "\n", $s);
+       }
+    }
+    
+    function initStream($message, $sendmail_path) {
+        $rfc822_header = $message->rfc822_header;
+	$from = $rfc822_header->from[0];
+	$envelopefrom = $from->mailbox.'@'.$from->host;
+	if (strstr($sendmail_path, "qmail-inject")) {
+    	    $stream = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
+	} else {
+    	    $stream = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
+	}
+    }
+    
+    function finalizeStream($stream) {
+	pclose($stream);
+    }
 }
 ?>