From ced34cb15e095836767971aa4d27b141fb1d7ec9 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 18 Oct 2014 08:47:54 -0400
Subject: [PATCH] Merge pull request #230 from bytesatwork-xx/master

---
 program/lib/Roundcube/rcube_mime.php |  325 +++++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 234 insertions(+), 91 deletions(-)

diff --git a/program/lib/Roundcube/rcube_mime.php b/program/lib/Roundcube/rcube_mime.php
index fd91ca9..f66cf14 100644
--- a/program/lib/Roundcube/rcube_mime.php
+++ b/program/lib/Roundcube/rcube_mime.php
@@ -127,10 +127,11 @@
      * @param int     $max      List only this number of addresses
      * @param boolean $decode   Decode address strings
      * @param string  $fallback Fallback charset if none specified
+     * @param boolean $addronly Return flat array with e-mail addresses only
      *
-     * @return array  Indexed list of addresses
+     * @return array Indexed list of addresses
      */
-    static function decode_address_list($input, $max = null, $decode = true, $fallback = null)
+    static function decode_address_list($input, $max = null, $decode = true, $fallback = null, $addronly = false)
     {
         $a   = self::parse_address_list($input, $decode, $fallback);
         $out = array();
@@ -145,20 +146,21 @@
         foreach ($a as $val) {
             $j++;
             $address = trim($val['address']);
-            $name    = trim($val['name']);
 
-            if ($name && $address && $name != $address)
-                $string = sprintf('%s <%s>', preg_match("/$special_chars/", $name) ? '"'.addcslashes($name, '"').'"' : $name, $address);
-            else if ($address)
-                $string = $address;
-            else if ($name)
-                $string = $name;
+            if ($addronly) {
+                $out[$j] = $address;
+            }
+            else {
+                $name = trim($val['name']);
+                if ($name && $address && $name != $address)
+                    $string = sprintf('%s <%s>', preg_match("/$special_chars/", $name) ? '"'.addcslashes($name, '"').'"' : $name, $address);
+                else if ($address)
+                    $string = $address;
+                else if ($name)
+                    $string = $name;
 
-            $out[$j] = array(
-                'name'   => $name,
-                'mailto' => $address,
-                'string' => $string
-            );
+                $out[$j] = array('name' => $name, 'mailto' => $address, 'string' => $string);
+            }
 
             if ($max && $j==$max)
                 break;
@@ -359,6 +361,14 @@
                 $address = $m[1];
                 $name    = '';
             }
+            // special case (#1489092)
+            else if (preg_match('/(\s*<MAILER-DAEMON>)$/', $val, $m)) {
+                $address = 'MAILER-DAEMON';
+                $name    = substr($val, 0, -strlen($m[1]));
+            }
+            else if (preg_match('/('.$email_rx.')/', $val, $m)) {
+                $name = $m[1];
+            }
             else {
                 $name = $val;
             }
@@ -371,14 +381,20 @@
                 }
                 if ($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);
             }
         }
@@ -465,21 +481,25 @@
     /**
      * 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;
         $q_level = 0;
+        $marks = array();
 
         foreach ($text as $idx => $line) {
-            if ($line[0] == '>') {
-                $len  = strlen($line);
-                $line = preg_replace('/^>+ {0,1}/', '', $line);
-                $q    = $len - strlen($line);
+            if (preg_match('/^(>+)/', $line, $m)) {
+                // remove quote chars
+                $q    = strlen($m[1]);
+                $line = preg_replace('/^>+/', '', $line);
+                // remove (optional) space-staffing
+                $line = preg_replace('/^ /', '', $line);
 
                 // The same paragraph (We join current line with the previous one) when:
                 // - the same level of quoting
@@ -491,6 +511,10 @@
                 ) {
                     $text[$last] .= $line;
                     unset($text[$idx]);
+
+                    if ($mark) {
+                        $marks[$last] = true;
+                    }
                 }
                 else {
                     $last = $idx;
@@ -503,7 +527,7 @@
                 }
                 else {
                     // remove space-stuffing
-                    $line = preg_replace('/^\s/', '', $line);
+                    $line = preg_replace('/^ /', '', $line);
 
                     if (isset($text[$last]) && $line
                         && $text[$last] != '-- '
@@ -511,6 +535,10 @@
                     ) {
                         $text[$last] .= $line;
                         unset($text[$idx]);
+
+                        if ($mark) {
+                            $marks[$last] = true;
+                        }
                     }
                     else {
                         $text[$idx] = $line;
@@ -519,6 +547,12 @@
                 }
             }
             $q_level = $q;
+        }
+
+        if (!empty($marks)) {
+            foreach (array_keys($marks) as $mk) {
+                $text[$mk] = $mark . $text[$mk];
+            }
         }
 
         return implode("\r\n", $text);
@@ -540,10 +574,13 @@
 
         foreach ($text as $idx => $line) {
             if ($line != '-- ') {
-                if ($line[0] == '>' && preg_match('/^(>+ {0,1})+/', $line, $regs)) {
-                    $level  = substr_count($regs[0], '>');
+                if (preg_match('/^(>+)/', $line, $m)) {
+                    // remove quote chars
+                    $level  = strlen($m[1]);
+                    $line   = preg_replace('/^>+/', '', $line);
+                    // remove (optional) space-staffing and spaces before the line end
+                    $line   = preg_replace('/(^ | +$)/', '', $line);
                     $prefix = str_repeat('>', $level) . ' ';
-                    $line   = rtrim(substr($line, strlen($regs[0])));
                     $line   = $prefix . self::wordwrap($line, $length - $level - 2, " \r\n$prefix", false, $charset);
                 }
                 else if ($line) {
@@ -561,81 +598,122 @@
 
 
     /**
-     * Improved wordwrap function.
+     * Improved wordwrap function with multibyte support.
+     * The code is based on Zend_Text_MultiByte::wordWrap().
      *
-     * @param string $string  Text to wrap
-     * @param int    $width   Line width
-     * @param string $break   Line separator
-     * @param bool   $cut     Enable to cut word
-     * @param string $charset Charset of $string
+     * @param string $string      Text to wrap
+     * @param int    $width       Line width
+     * @param string $break       Line separator
+     * @param bool   $cut         Enable to cut word
+     * @param string $charset     Charset of $string
+     * @param bool   $wrap_quoted When enabled quoted lines will not be wrapped
      *
      * @return string Text
      */
-    public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null)
+    public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null, $wrap_quoted=true)
     {
-        if ($charset && function_exists('mb_internal_encoding')) {
+        // Note: Never try to use iconv instead of mbstring functions here
+        //       Iconv's substr/strlen are 100x slower (#1489113)
+
+        if ($charset && $charset != RCUBE_CHARSET && function_exists('mb_internal_encoding')) {
             mb_internal_encoding($charset);
         }
 
-        $para   = preg_split('/\r?\n/', $string);
-        $string = '';
+        // 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 (count($para)) {
-            $line = array_shift($para);
-            if ($line[0] == '>') {
-                $string .= $line.$break;
-                continue;
-            }
+        while (($stringLength = mb_strlen($string)) > 0) {
+            $breakPos = mb_strpos($string, $separator, 0);
 
-            $list = explode(' ', $line);
-            $len = 0;
-            while (count($list)) {
-                $line   = array_shift($list);
-                $l      = mb_strlen($line);
-                $newlen = $len + $l + ($len ? 1 : 0);
-
-                if ($newlen <= $width) {
-                    $string .= ($len ? ' ' : '').$line;
-                    $len += (1 + $l);
+            // quoted line (do not wrap)
+            if ($wrap_quoted && $string[0] == '>') {
+                if ($breakPos === $stringLength - 1 || $breakPos === false) {
+                    $subString = $string;
+                    $cutLength = null;
                 }
                 else {
-                    if ($l > $width) {
-                        if ($cut) {
-                            $start = 0;
-                            while ($l) {
-                                $str = mb_substr($line, $start, $width);
-                                $strlen = mb_strlen($str);
-                                $string .= ($len ? $break : '').$str;
-                                $start += $strlen;
-                                $l -= $strlen;
-                                $len = $strlen;
+                    $subString = mb_substr($string, 0, $breakPos);
+                    $cutLength = $breakPos + 1;
+                }
+            }
+            // next line found and current line is shorter than the limit
+            else if ($breakPos !== false && $breakPos < $width) {
+                if ($breakPos === $stringLength - 1) {
+                    $subString = $string;
+                    $cutLength = null;
+                }
+                else {
+                    $subString = mb_substr($string, 0, $breakPos);
+                    $cutLength = $breakPos + 1;
+                }
+            }
+            else {
+                $subString = mb_substr($string, 0, $width);
+
+                // last line
+                if ($breakPos === false && $subString === $string) {
+                    $cutLength = null;
+                }
+                else {
+                    $nextChar = mb_substr($string, $width, 1);
+
+                    if ($nextChar === ' ' || $nextChar === $separator) {
+                        $afterNextChar = mb_substr($string, $width + 1, 1);
+
+                        // Note: mb_substr() does never return False
+                        if ($afterNextChar === false || $afterNextChar === '') {
+                            $subString .= $nextChar;
+                        }
+
+                        $cutLength = mb_strlen($subString) + 1;
+                    }
+                    else {
+                        $spacePos = mb_strrpos($subString, ' ', 0);
+
+                        if ($spacePos !== false) {
+                            $subString = mb_substr($subString, 0, $spacePos);
+                            $cutLength = $spacePos + 1;
+                        }
+                        else if ($cut === false) {
+                            $spacePos = mb_strpos($string, ' ', 0);
+
+                            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 {
+                                $subString = mb_substr($string, 0, $breakPos);
+                                $cutLength = $breakPos + 1;
                             }
                         }
                         else {
-                            $string .= ($len ? $break : '').$line;
-                            if (count($list)) {
-                                $string .= $break;
-                            }
-                            $len = 0;
+                            $cutLength = $width;
                         }
-                    }
-                    else {
-                        $string .= $break.$line;
-                        $len = $l;
                     }
                 }
             }
 
-            if (count($para)) {
-                $string .= $break;
+            $result[] = $subString;
+
+            if ($cutLength !== null) {
+                $string = mb_substr($string, $cutLength, ($stringLength - $cutLength));
+            }
+            else {
+                break;
             }
         }
 
-        if ($charset && function_exists('mb_internal_encoding')) {
+        if ($charset && $charset != RCUBE_CHARSET && function_exists('mb_internal_encoding')) {
             mb_internal_encoding(RCUBE_CHARSET);
         }
 
-        return $string;
+        return implode($break, $result);
     }
 
 
@@ -655,12 +733,20 @@
      */
     public static function file_content_type($path, $name, $failover = 'application/octet-stream', $is_stream = false, $skip_suffix = false)
     {
+        static $mime_ext = array();
+
         $mime_type = null;
-        $mime_magic = rcube::get_instance()->config->get('mime_magic');
-        $mime_ext = $skip_suffix ? null : @include(RCUBE_CONFIG_DIR . '/mimetypes.php');
+        $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)];
             }
@@ -668,7 +754,16 @@
 
         // try fileinfo extension if available
         if (!$mime_type && function_exists('finfo_open')) {
-            if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) {
+            // null as a 2nd argument should be the same as no argument
+            // this however is not true on all systems/versions
+            if ($mime_magic) {
+                $finfo = finfo_open(FILEINFO_MIME, $mime_magic);
+            }
+            else {
+                $finfo = finfo_open(FILEINFO_MIME);
+            }
+
+            if ($finfo) {
                 if ($is_stream)
                     $mime_type = finfo_buffer($finfo, $path);
                 else
@@ -714,27 +809,34 @@
         // load mapping file
         $file_paths = array();
 
-        if ($mime_types = rcube::get_instance()->config->get('mime_types'))
+        if ($mime_types = rcube::get_instance()->config->get('mime_types')) {
             $file_paths[] = $mime_types;
+        }
 
         // try common locations
-        $file_paths[] = '/etc/mime.types';
-        $file_paths[] = '/etc/httpd/mime.types';
-        $file_paths[] = '/etc/httpd2/mime.types';
-        $file_paths[] = '/etc/apache/mime.types';
-        $file_paths[] = '/etc/apache2/mime.types';
-        $file_paths[] = '/usr/local/etc/httpd/conf/mime.types';
-        $file_paths[] = '/usr/local/etc/apache/conf/mime.types';
+        if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
+            $file_paths[] = 'C:/xampp/apache/conf/mime.types.';
+        }
+        else {
+            $file_paths[] = '/etc/mime.types';
+            $file_paths[] = '/etc/httpd/mime.types';
+            $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';
+        }
 
         foreach ($file_paths as $fp) {
-            if (is_readable($fp)) {
-                $lines = file($fp, FILE_IGNORE_NEW_LINES);
+            if (@is_readable($fp)) {
+                $lines = file($fp, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
                 break;
             }
         }
 
         $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))
@@ -750,11 +852,37 @@
 
         // fallback to some well-known types most important for daily emails
         if (empty($mime_types)) {
-            $mime_extensions = @include(RCUBE_CONFIG_DIR . '/mimetypes.php');
-            $mime_extensions += array('gif' => 'image/gif', 'png' => 'image/png', 'jpg' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'tif' => 'image/tiff');
+            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 => $mime)
+            foreach ($mime_extensions as $ext => $mime) {
                 $mime_types[$mime][] = $ext;
+            }
+        }
+
+        // Add some known aliases that aren't included by some mime.types (#1488891)
+        // the order is important here so standard extensions have higher prio
+        $aliases = array(
+            'image/gif'      => array('gif'),
+            'image/png'      => array('png'),
+            'image/x-png'    => array('png'),
+            'image/jpeg'     => array('jpg', 'jpeg', 'jpe'),
+            'image/jpg'      => array('jpg', 'jpeg', 'jpe'),
+            'image/pjpeg'    => array('jpg', 'jpeg', 'jpe'),
+            'image/tiff'     => array('tif'),
+            'message/rfc822' => array('eml'),
+            'text/x-mail'    => array('eml'),
+        );
+
+        foreach ($aliases as $mime => $exts) {
+            $mime_types[$mime] = array_unique(array_merge((array) $mime_types[$mime], $exts));
+
+            foreach ($exts as $ext) {
+                if (!isset($mime_extensions[$ext])) {
+                    $mime_extensions[$ext] = $mime;
+                }
+            }
         }
 
         return $mimetype ? $mime_types[$mimetype] : $mime_extensions;
@@ -779,4 +907,19 @@
         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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