From 46f7b7096450939fe03c95aa81ce06ae4bfca89d Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Mon, 28 Mar 2016 06:51:43 -0400
Subject: [PATCH] Enable reply/reply-all/forward buttons also in preview frame of message/rfc822

---
 program/lib/Roundcube/rcube_mime.php |  248 ++++++++++++++++++++++++-------------------------
 1 files changed, 123 insertions(+), 125 deletions(-)

diff --git a/program/lib/Roundcube/rcube_mime.php b/program/lib/Roundcube/rcube_mime.php
index 5258af5..56406b1 100644
--- a/program/lib/Roundcube/rcube_mime.php
+++ b/program/lib/Roundcube/rcube_mime.php
@@ -1,10 +1,10 @@
 <?php
 
-/*
+/**
  +-----------------------------------------------------------------------+
  | This file is part of the Roundcube Webmail client                     |
- | Copyright (C) 2005-2012, The Roundcube Dev Team                       |
- | Copyright (C) 2011-2012, Kolab Systems AG                             |
+ | Copyright (C) 2005-2014, The Roundcube Dev Team                       |
+ | Copyright (C) 2011-2014, Kolab Systems AG                             |
  |                                                                       |
  | Licensed under the GNU General Public License version 3 or            |
  | any later version with exceptions for skins & plugins.                |
@@ -39,7 +39,6 @@
         self::$default_charset = $default_charset;
     }
 
-
     /**
      * Returns message/object character set name
      *
@@ -58,67 +57,29 @@
         return RCUBE_CHARSET;
     }
 
-
     /**
      * Parse the given raw message source and return a structure
      * of rcube_message_part objects.
      *
-     * It makes use of the PEAR:Mail_mimeDecode library
+     * It makes use of the rcube_mime_decode library
      *
-     * @param string  The message source
+     * @param string $raw_body The message source
+     *
      * @return object rcube_message_part The message structure
      */
     public static function parse_message($raw_body)
     {
-        $mime = new Mail_mimeDecode($raw_body);
-        $struct = $mime->decode(array('include_bodies' => true, 'decode_bodies' => true));
-        return self::structure_part($struct);
+        $conf = array(
+            'include_bodies'  => true,
+            'decode_bodies'   => true,
+            'decode_headers'  => false,
+            'default_charset' => self::get_charset(),
+        );
+
+        $mime = new rcube_mime_decode($conf);
+
+        return $mime->decode($raw_body);
     }
-
-
-    /**
-     * Recursive method to convert a Mail_mimeDecode part into a rcube_message_part object
-     *
-     * @param object  A message part struct
-     * @param int     Part count
-     * @param string  Parent MIME ID
-     *
-     * @return object rcube_message_part
-     */
-    private static function structure_part($part, $count=0, $parent='')
-    {
-        $struct = new rcube_message_part;
-        $struct->mime_id = $part->mime_id ? $part->mime_id : (empty($parent) ? (string)$count : "$parent.$count");
-        $struct->headers = $part->headers;
-        $struct->ctype_primary = $part->ctype_primary;
-        $struct->ctype_secondary = $part->ctype_secondary;
-        $struct->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary;
-        $struct->ctype_parameters = $part->ctype_parameters;
-
-        if ($part->headers['content-transfer-encoding'])
-            $struct->encoding = $part->headers['content-transfer-encoding'];
-        if ($part->ctype_parameters['charset'])
-            $struct->charset = $part->ctype_parameters['charset'];
-
-        $part_charset = $struct->charset ? $struct->charset : self::get_charset();
-
-        // determine filename
-        if (($filename = $part->d_parameters['filename']) || ($filename = $part->ctype_parameters['name'])) {
-            $struct->filename = rcube_mime::decode_mime_string($filename, $part_charset);
-        }
-
-        // copy part body and convert it to UTF-8 if necessary
-        $struct->body = $part->ctype_primary == 'text' || !$part->ctype_parameters['charset'] ? rcube_charset::convert($part->body, $part_charset) : $part->body;
-        $struct->size = strlen($part->body);
-        $struct->disposition = $part->disposition;
-
-        foreach ((array)$part->parts as $child_part) {
-            $struct->parts[] = self::structure_part($child_part, ++$count, $struct->mime_id);
-        }
-
-        return $struct;
-    }
-
 
     /**
      * Split an address list into a structured array list
@@ -169,12 +130,11 @@
         return $out;
     }
 
-
     /**
      * Decode a message header value
      *
-     * @param string  $input         Header value
-     * @param string  $fallback      Fallback charset if none specified
+     * @param string  $input    Header value
+     * @param string  $fallback Fallback charset if none specified
      *
      * @return string Decoded string
      */
@@ -184,7 +144,6 @@
 
         return $str;
     }
-
 
     /**
      * Decode a mime-encoded string to internal charset
@@ -196,7 +155,7 @@
      */
     public static function decode_mime_string($input, $fallback = null)
     {
-        $default_charset = !empty($fallback) ? $fallback : self::get_charset();
+        $default_charset = $fallback ?: self::get_charset();
 
         // rfc: all line breaks or other characters not found
         // in the Base64 Alphabet must be ignored by decoding software
@@ -282,12 +241,12 @@
         return rcube_charset::convert($input, $default_charset);
     }
 
-
     /**
      * Decode a mime part
      *
      * @param string $input    Input string
      * @param string $encoding Part encoding
+     *
      * @return string Decoded string
      */
     public static function decode($input, $encoding = '7bit')
@@ -308,10 +267,8 @@
         }
     }
 
-
     /**
      * Split RFC822 header string into an associative array
-     * @access private
      */
     public static function parse_headers($headers)
     {
@@ -332,9 +289,8 @@
         return $a_headers;
     }
 
-
     /**
-     * @access private
+     * E-mail address list parser
      */
     private static function parse_address_list($str, $decode = true, $fallback = null)
     {
@@ -366,6 +322,9 @@
                 $address = 'MAILER-DAEMON';
                 $name    = substr($val, 0, -strlen($m[1]));
             }
+            else if (preg_match('/('.$email_rx.')/', $val, $m)) {
+                $name = $m[1];
+            }
             else {
                 $name = $val;
             }
@@ -378,21 +337,26 @@
                 }
                 if ($decode) {
                     $name = self::decode_header($name, $fallback);
+                    // some clients encode addressee name with quotes around it
+                    if ($name[0] == '"' && $name[strlen($name)-1] == '"') {
+                        $name = substr($name, 1, -1);
+                    }
                 }
             }
 
             if (!$address && $name) {
                 $address = $name;
+                $name    = '';
             }
 
             if ($address) {
+                $address      = self::fix_email($address);
                 $result[$key] = array('name' => $name, 'address' => $address);
             }
         }
 
         return $result;
     }
-
 
     /**
      * Explodes header (e.g. address-list) string into array of strings
@@ -468,19 +432,20 @@
         return $result;
     }
 
-
     /**
      * Interpret a format=flowed message body according to RFC 2646
      *
-     * @param string  $text Raw body formatted as flowed text
+     * @param string $text Raw body formatted as flowed text
+     * @param string $mark Mark each flowed line with specified character
      *
      * @return string Interpreted text with unwrapped lines and stuffed space removed
      */
-    public static function unfold_flowed($text)
+    public static function unfold_flowed($text, $mark = null)
     {
-        $text = preg_split('/\r?\n/', $text);
-        $last = -1;
+        $text    = preg_split('/\r?\n/', $text);
+        $last    = -1;
         $q_level = 0;
+        $marks   = array();
 
         foreach ($text as $idx => $line) {
             if (preg_match('/^(>+)/', $line, $m)) {
@@ -500,6 +465,10 @@
                 ) {
                     $text[$last] .= $line;
                     unset($text[$idx]);
+
+                    if ($mark) {
+                        $marks[$last] = true;
+                    }
                 }
                 else {
                     $last = $idx;
@@ -512,14 +481,18 @@
                 }
                 else {
                     // remove space-stuffing
-                    $line = preg_replace('/^\s/', '', $line);
+                    $line = preg_replace('/^ /', '', $line);
 
-                    if (isset($text[$last]) && $line
+                    if (isset($text[$last]) && $line && !$q_level
                         && $text[$last] != '-- '
                         && $text[$last][strlen($text[$last])-1] == ' '
                     ) {
                         $text[$last] .= $line;
                         unset($text[$idx]);
+
+                        if ($mark) {
+                            $marks[$last] = true;
+                        }
                     }
                     else {
                         $text[$idx] = $line;
@@ -530,15 +503,20 @@
             $q_level = $q;
         }
 
+        if (!empty($marks)) {
+            foreach (array_keys($marks) as $mk) {
+                $text[$mk] = $mark . $text[$mk];
+            }
+        }
+
         return implode("\r\n", $text);
     }
-
 
     /**
      * Wrap the given text to comply with RFC 2646
      *
-     * @param string $text Text to wrap
-     * @param int $length Length
+     * @param string $text    Text to wrap
+     * @param int    $length  Length
      * @param string $charset Character encoding of $text
      *
      * @return string Wrapped text
@@ -571,7 +549,6 @@
         return implode("\r\n", $text);
     }
 
-
     /**
      * Improved wordwrap function with multibyte support.
      * The code is based on Zend_Text_MultiByte::wordWrap().
@@ -587,23 +564,20 @@
      */
     public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null, $wrap_quoted=true)
     {
-        if (!$charset) {
-            $charset = RCUBE_CHARSET;
-        }
+        // Note: Never try to use iconv instead of mbstring functions here
+        //       Iconv's substr/strlen are 100x slower (#1489113)
 
-        // detect available functions
-        $strlen_func  = function_exists('iconv_strlen') ? 'iconv_strlen' : 'mb_strlen';
-        $strpos_func  = function_exists('iconv_strpos') ? 'iconv_strpos' : 'mb_strpos';
-        $strrpos_func = function_exists('iconv_strrpos') ? 'iconv_strrpos' : 'mb_strrpos';
-        $substr_func  = function_exists('iconv_substr') ? 'iconv_substr' : 'mb_substr';
+        if ($charset && $charset != RCUBE_CHARSET) {
+            mb_internal_encoding($charset);
+        }
 
         // Convert \r\n to \n, this is our line-separator
         $string       = str_replace("\r\n", "\n", $string);
         $separator    = "\n"; // must be 1 character length
         $result       = array();
 
-        while (($stringLength = $strlen_func($string, $charset)) > 0) {
-            $breakPos = $strpos_func($string, $separator, 0, $charset);
+        while (($stringLength = mb_strlen($string)) > 0) {
+            $breakPos = mb_strpos($string, $separator, 0);
 
             // quoted line (do not wrap)
             if ($wrap_quoted && $string[0] == '>') {
@@ -612,7 +586,7 @@
                     $cutLength = null;
                 }
                 else {
-                    $subString = $substr_func($string, 0, $breakPos, $charset);
+                    $subString = mb_substr($string, 0, $breakPos);
                     $cutLength = $breakPos + 1;
                 }
             }
@@ -623,59 +597,54 @@
                     $cutLength = null;
                 }
                 else {
-                    $subString = $substr_func($string, 0, $breakPos, $charset);
+                    $subString = mb_substr($string, 0, $breakPos);
                     $cutLength = $breakPos + 1;
                 }
             }
             else {
-                $subString = $substr_func($string, 0, $width, $charset);
+                $subString = mb_substr($string, 0, $width);
 
                 // last line
                 if ($breakPos === false && $subString === $string) {
                     $cutLength = null;
                 }
                 else {
-                    $nextChar = $substr_func($string, $width, 1, $charset);
+                    $nextChar = mb_substr($string, $width, 1);
 
                     if ($nextChar === ' ' || $nextChar === $separator) {
-                        $afterNextChar = $substr_func($string, $width + 1, 1, $charset);
+                        $afterNextChar = mb_substr($string, $width + 1, 1);
 
-                        if ($afterNextChar === false) {
+                        // Note: mb_substr() does never return False
+                        if ($afterNextChar === false || $afterNextChar === '') {
                             $subString .= $nextChar;
                         }
 
-                        $cutLength = $strlen_func($subString, $charset) + 1;
+                        $cutLength = mb_strlen($subString) + 1;
                     }
                     else {
-                        if ($strrpos_func[0] == 'm') {
-                            $spacePos = $strrpos_func($subString, ' ', 0, $charset);
-                        }
-                        else {
-                            $spacePos = $strrpos_func($subString, ' ', $charset);
-                        }
+                        $spacePos = mb_strrpos($subString, ' ', 0);
 
                         if ($spacePos !== false) {
-                            $subString = $substr_func($subString, 0, $spacePos, $charset);
+                            $subString = mb_substr($subString, 0, $spacePos);
                             $cutLength = $spacePos + 1;
                         }
-                        else if ($cut === false && $breakPos === false) {
-                            $subString = $string;
-                            $cutLength = null;
-                        }
                         else if ($cut === false) {
-                            $spacePos = $strpos_func($string, ' ', 0, $charset);
+                            $spacePos = mb_strpos($string, ' ', 0);
 
-                            if ($spacePos !== false && $spacePos < $breakPos) {
-                                $subString = $substr_func($string, 0, $spacePos, $charset);
+                            if ($spacePos !== false && ($breakPos === false || $spacePos < $breakPos)) {
+                                $subString = mb_substr($string, 0, $spacePos);
                                 $cutLength = $spacePos + 1;
                             }
+                            else if ($breakPos === false) {
+                                $subString = $string;
+                                $cutLength = null;
+                            }
                             else {
-                                $subString = $substr_func($string, 0, $breakPos, $charset);
+                                $subString = mb_substr($string, 0, $breakPos);
                                 $cutLength = $breakPos + 1;
                             }
                         }
                         else {
-                            $subString = $substr_func($subString, 0, $width, $charset);
                             $cutLength = $width;
                         }
                     }
@@ -685,23 +654,26 @@
             $result[] = $subString;
 
             if ($cutLength !== null) {
-                $string = $substr_func($string, $cutLength, ($stringLength - $cutLength), $charset);
+                $string = mb_substr($string, $cutLength, ($stringLength - $cutLength));
             }
             else {
                 break;
             }
         }
 
+        if ($charset && $charset != RCUBE_CHARSET) {
+            mb_internal_encoding(RCUBE_CHARSET);
+        }
+
         return implode($break, $result);
     }
-
 
     /**
      * A method to guess the mime_type of an attachment.
      *
-     * @param string $path      Path to the file or file contents
-     * @param string $name      File name (with suffix)
-     * @param string $failover  Mime type supplied for failover
+     * @param string  $path        Path to the file or file contents
+     * @param string  $name        File name (with suffix)
+     * @param string  $failover    Mime type supplied for failover
      * @param boolean $is_stream   Set to True if $path contains file contents
      * @param boolean $skip_suffix Set to True if the config/mimetypes.php mappig should be ignored
      *
@@ -712,12 +684,20 @@
      */
     public static function file_content_type($path, $name, $failover = 'application/octet-stream', $is_stream = false, $skip_suffix = false)
     {
-        $mime_type = null;
-        $mime_magic = rcube::get_instance()->config->get('mime_magic');
-        $mime_ext = $skip_suffix ? null : @include(RCUBE_CONFIG_DIR . '/mimetypes.php');
+        static $mime_ext = array();
+
+        $mime_type  = null;
+        $config     = rcube::get_instance()->config;
+        $mime_magic = $config->get('mime_magic');
+
+        if (!$skip_suffix && empty($mime_ext)) {
+            foreach ($config->resolve_paths('mimetypes.php') as $fpath) {
+                $mime_ext = array_merge($mime_ext, (array) @include($fpath));
+            }
+        }
 
         // use file name suffix with hard-coded mime-type map
-        if (is_array($mime_ext) && $name) {
+        if (!$skip_suffix && is_array($mime_ext) && $name) {
             if ($suffix = substr($name, strrpos($name, '.')+1)) {
                 $mime_type = $mime_ext[strtolower($suffix)];
             }
@@ -761,12 +741,13 @@
         return $mime_type;
     }
 
-
     /**
      * Get mimetype => file extension mapping
      *
-     * @param string  Mime-Type to get extensions for
-     * @return array  List of extensions matching the given mimetype or a hash array with ext -> mimetype mappings if $mimetype is not given
+     * @param string Mime-Type to get extensions for
+     *
+     * @return array List of extensions matching the given mimetype or a hash array
+     *               with ext -> mimetype mappings if $mimetype is not given
      */
     public static function get_mime_extensions($mimetype = null)
     {
@@ -794,6 +775,7 @@
             $file_paths[] = '/etc/httpd2/mime.types';
             $file_paths[] = '/etc/apache/mime.types';
             $file_paths[] = '/etc/apache2/mime.types';
+            $file_paths[] = '/etc/nginx/mime.types';
             $file_paths[] = '/usr/local/etc/httpd/conf/mime.types';
             $file_paths[] = '/usr/local/etc/apache/conf/mime.types';
         }
@@ -806,7 +788,7 @@
         }
 
         $mime_types = $mime_extensions = array();
-        $regex = "/([\w\+\-\.\/]+)\t+([\w\s]+)/i"; 
+        $regex = "/([\w\+\-\.\/]+)\s+([\w\s]+)/i";
         foreach((array)$lines as $line) {
              // skip comments or mime types w/o any extensions
             if ($line[0] == '#' || !preg_match($regex, $line, $matches))
@@ -822,7 +804,9 @@
 
         // fallback to some well-known types most important for daily emails
         if (empty($mime_types)) {
-            $mime_extensions = (array) @include(RCUBE_CONFIG_DIR . '/mimetypes.php');
+            foreach (rcube::get_instance()->config->resolve_paths('mimetypes.php') as $fpath) {
+                $mime_extensions = array_merge($mime_extensions, (array) @include($fpath));
+            }
 
             foreach ($mime_extensions as $ext => $mime) {
                 $mime_types[$mime][] = $ext;
@@ -856,7 +840,6 @@
         return $mimetype ? $mime_types[$mimetype] : $mime_extensions;
     }
 
-
     /**
      * Detect image type of the given binary data by checking magic numbers.
      *
@@ -875,4 +858,19 @@
         return 'image/' . $type;
     }
 
+    /**
+     * Try to fix invalid email addresses
+     */
+    public static function fix_email($email)
+    {
+        $parts = rcube_utils::explode_quoted_string('@', $email);
+        foreach ($parts as $idx => $part) {
+            // remove redundant quoting (#1490040)
+            if ($part[0] == '"' && preg_match('/^"([a-zA-Z0-9._+=-]+)"$/', $part, $m)) {
+                $parts[$idx] = $m[1];
+            }
+        }
+
+        return implode('@', $parts);
+    }
 }

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