From 000bb9a55cdca43a7111eb3a5e655a28fa04d8a4 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Sat, 13 Sep 2008 10:26:57 -0400
Subject: [PATCH] - localization fix for 'replyto' label length (use short 'replyto' and long 'reply-to')

---
 program/include/rcube_imap.php |  208 +++++++++++++++++++++++++++++++++++++++++----------
 1 files changed, 167 insertions(+), 41 deletions(-)

diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index 0323c53..1b5ec16 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -166,6 +166,10 @@
     {
     $this->close();
     $this->connect($this->host, $this->user, $this->pass, $this->port, $this->ssl);
+    
+    // issue SELECT command to restore connection status
+    if ($this->mailbox)
+      iil_C_Select($this->conn, $this->mailbox);
     }
 
 
@@ -1149,36 +1153,128 @@
       if (empty($struct->disposition))
         $struct->disposition = 'inline';
       }
+    
+    // fetch message headers if message/rfc822 or named part (could contain Content-Location header)
+    if ($struct->ctype_primary == 'message' || ($struct->ctype_parameters['name'] && !$struct->content_id)) {
+      $part_headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id);
+      $struct->headers = $this->_parse_headers($part_headers) + $struct->headers;
+    }
 
-    // fetch message headers if message/rfc822
-    if ($struct->ctype_primary=='message')
-      {
-      $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
-      $struct->headers = $this->_parse_headers($headers);
-      
+    if ($struct->ctype_primary=='message') {
       if (is_array($part[8]) && empty($struct->parts))
         $struct->parts[] = $this->_structure_part($part[8], ++$count, $struct->mime_id);
-      }
+    }
 
     // normalize filename property
-    if ($filename_mime = $struct->d_parameters['filename'] ? $struct->d_parameters['filename'] : $struct->ctype_parameters['name'])
-    {
-      $struct->filename = rcube_imap::decode_mime_string($filename_mime, 
-    	    $struct->charset ? $struct->charset : rc_detect_encoding($filename_mime, $this->default_charset));
-    }
-    else if ($filename_encoded = $struct->d_parameters['filename*'] ? $struct->d_parameters['filename*'] : $struct->ctype_parameters['name*'])
-    {
-      // decode filename according to RFC 2231, Section 4
-      list($filename_charset,, $filename_urlencoded) = split('\'', $filename_encoded);
-      $struct->filename = rcube_charset_convert(urldecode($filename_urlencoded), $filename_charset);
-    }
-    else if (!empty($struct->headers['content-description']))
-      $struct->filename = rcube_imap::decode_mime_string($struct->headers['content-description'],
-    	    $struct->charset ? $struct->charset : rc_detect_encoding($struct->headers['content-description'],$this->default_charset));
-      
+    $this->_set_part_filename($struct);
+
     return $struct;
     }
     
+
+  /**
+   * Set attachment filename from message part structure 
+   *
+   * @access private
+   * @param  object rcube_message_part Part object
+   */
+  function _set_part_filename(&$part)
+    {
+    if (!empty($part->d_parameters['filename']))
+      $filename_mime = $part->d_parameters['filename'];
+    else if (!empty($part->ctype_parameters['name']))
+      $filename_mime = $part->ctype_parameters['name'];
+    else if (!empty($part->d_parameters['filename*']))
+      $filename_encoded = $part->d_parameters['filename*'];
+    else if (!empty($part->ctype_parameters['name*']))
+      $filename_encoded = $part->ctype_parameters['name*'];
+    // RFC2231 value continuations
+    // TODO: this should be rewrited to support RFC2231 4.1 combinations
+    else if (!empty($part->d_parameters['filename*0'])) {
+      $i = 0;
+      while (isset($part->d_parameters['filename*'.$i])) {
+        $i++;
+        $filename_mime .= $part->d_parameters['filename*'.$i];
+	}
+      // some servers (eg. dovecot-1.x) have no support for parameter value continuations
+      // we must fetch and parse headers "manually"
+      if ($i<2) {
+        // TODO: fetch only Content-Type/Content-Disposition header
+        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
+	$filename_mime = '';
+	$i = 0;
+	while (preg_match('/filename\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+	  $filename_mime .= $matches[1];
+	  $i++;
+	  }
+        } 	
+      }
+    else if (!empty($part->d_parameters['filename*0*'])) {
+      $i = 0;
+      while (isset($part->d_parameters['filename*'.$i.'*'])) {
+        $i++;
+	$filename_encoded .= $part->d_parameters['filename*'.$i.'*'];
+	}
+      if ($i<2) {
+        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
+	$filename_encoded = '';
+	$i = 0;
+	while (preg_match('/filename\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+	  $filename_encoded .= $matches[1];
+	  $i++;
+	  }
+        } 	
+      }
+    else if (!empty($part->ctype_parameters['name*0'])) {
+      $i = 0;
+      while (isset($part->ctype_parameters['name*'.$i])) {
+        $i++;
+        $filename_mime .= $part->ctype_parameters['name*'.$i];
+	}
+      if ($i<2) {
+        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
+	$filename_mime = '';
+	$i = 0;
+	while (preg_match('/\s+name\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+	  $filename_mime .= $matches[1];
+	  $i++;
+	  }
+        } 	
+      }
+    else if (!empty($part->ctype_parameters['name*0*'])) {
+      $i = 0;
+      while (isset($part->ctype_parameters['name*'.$i.'*'])) {
+        $i++;
+        $filename_encoded .= $part->ctype_parameters['name*'.$i.'*'];
+	}
+      if ($i<2) {
+        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
+	$filename_encoded = '';
+	$i = 0;
+	while (preg_match('/\s+name\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+	  $filename_encoded .= $matches[1];
+	  $i++;
+	  }
+        } 	
+      }
+    // Content-Disposition
+    else if (!empty($part->headers['content-description']))
+      $filename_mime = $part->headers['content-description'];
+    else
+      return;
+
+    // decode filename
+    if (!empty($filename_mime)) {
+      $part->filename = rcube_imap::decode_mime_string($filename_mime, 
+    	    $part->charset ? $part->charset : rc_detect_encoding($filename_mime, $this->default_charset));
+      } 
+    else if (!empty($filename_encoded)) {
+      // decode filename according to RFC 2231, Section 4
+      list($filename_charset,, $filename_urlencoded) = split('\'', $filename_encoded);
+      $part->filename = rcube_charset_convert(urldecode($filename_urlencoded), $filename_charset);
+      }
+    }
+     
   
   /**
    * Fetch message body of a specific message from the server
@@ -1274,6 +1370,23 @@
     $body .= iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, NULL, 1);
 
     return $body;    
+    }
+
+
+  /**
+   * Returns the message headers as string
+   *
+   * @param int  Message UID
+   * @return string Message headers string
+   */
+  function &get_raw_headers($uid)
+    {
+    if (!($msg_id = $this->_uid2id($uid)))
+      return FALSE;
+
+    $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $msg_id, NULL);
+
+    return $headers;    
     }
     
 
@@ -2324,32 +2437,45 @@
    */
   function decode_mime_string($input, $fallback=null)
     {
+    // Initialize variable
     $out = '';
 
-    $pos = strpos($input, '=?');
-    if ($pos !== false)
-      {
-      // rfc: all line breaks or other characters not found 
-      // in the Base64 Alphabet must be ignored by decoding software
-      // delete all blanks between MIME-lines, differently we can 
-      // receive unnecessary blanks and broken utf-8 symbols
-      $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
+    // Iterate instead of recursing, this way if there are too many values we don't have stack overflows
+    // rfc: all line breaks or other characters not found 
+    // in the Base64 Alphabet must be ignored by decoding software
+    // delete all blanks between MIME-lines, differently we can 
+    // receive unnecessary blanks and broken utf-8 symbols
+    $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
 
-      $out = substr($input, 0, $pos);
-  
-      $end_cs_pos = strpos($input, "?", $pos+2);
-      $end_en_pos = strpos($input, "?", $end_cs_pos+1);
-      $end_pos = strpos($input, "?=", $end_en_pos+1);
-  
-      $encstr = substr($input, $pos+2, ($end_pos-$pos-2));
-      $rest = substr($input, $end_pos+2);
+    // Check if there is stuff to decode
+    if (strpos($input, '=?') !== false) {
+      // Loop through the string to decode all occurences of =? ?= into the variable $out 
+      while(($pos = strpos($input, '=?')) !== false) {
+        // Append everything that is before the text to be decoded
+        $out .= substr($input, 0, $pos);
 
-      $out .= rcube_imap::_decode_mime_string_part($encstr);
-      $out .= rcube_imap::decode_mime_string($rest, $fallback);
+        // Get the location of the text to decode
+        $end_cs_pos = strpos($input, "?", $pos+2);
+        $end_en_pos = strpos($input, "?", $end_cs_pos+1);
+        $end_pos = strpos($input, "?=", $end_en_pos+1);
 
-      return $out;
+        // Extract the encoded string
+        $encstr = substr($input, $pos+2, ($end_pos-$pos-2));
+        // Extract the remaining string
+        $input = substr($input, $end_pos+2);
+
+        // Decode the string fragement
+        $out .= rcube_imap::_decode_mime_string_part($encstr);
       }
 
+      // Deocde the rest (if any)
+      if (strlen($input) != 0)
+         $out .= rcube_imap::decode_mime_string($input, $fallback);
+
+       // return the results
+      return $out;
+    }
+
     // no encoding information, use fallback
     return rcube_charset_convert($input, 
       !empty($fallback) ? $fallback : rcmail::get_instance()->config->get('default_charset', 'ISO-8859-1'));

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