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0
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1 <?php
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2
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3 /**
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4 +-----------------------------------------------------------------------+
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5 | This file is part of the Roundcube Webmail client |
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6 | Copyright (C) 2008-2014, The Roundcube Dev Team |
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7 | |
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8 | Licensed under the GNU General Public License version 3 or |
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9 | any later version with exceptions for skins & plugins. |
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10 | See the README file for a full license statement. |
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11 | |
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12 | PURPOSE: |
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13 | Logical representation of a mail message with all its data |
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14 | and related functions |
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15 +-----------------------------------------------------------------------+
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16 | Author: Thomas Bruederli <roundcube@gmail.com> |
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17 +-----------------------------------------------------------------------+
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18 */
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19
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20 /**
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21 * Logical representation of a mail message with all its data
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22 * and related functions
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23 *
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24 * @package Framework
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25 * @subpackage Storage
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26 * @author Thomas Bruederli <roundcube@gmail.com>
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27 */
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28 class rcube_message
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29 {
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30 /**
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31 * Instance of framework class.
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32 *
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33 * @var rcube
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34 */
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35 private $app;
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36
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37 /**
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38 * Instance of storage class
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39 *
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40 * @var rcube_storage
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41 */
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42 private $storage;
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43
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44 /**
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45 * Instance of mime class
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46 *
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47 * @var rcube_mime
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48 */
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49 private $mime;
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50 private $opt = array();
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51 private $parse_alternative = false;
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52
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53 public $uid;
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54 public $folder;
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55 public $headers;
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56 public $sender;
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57 public $context;
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58 public $parts = array();
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59 public $mime_parts = array();
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60 public $inline_parts = array();
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61 public $attachments = array();
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62 public $subject = '';
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63 public $is_safe = false;
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64
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65 const BODY_MAX_SIZE = 1048576; // 1MB
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66
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67
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68 /**
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69 * __construct
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70 *
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71 * Provide a uid, and parse message structure.
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72 *
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73 * @param string $uid The message UID.
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74 * @param string $folder Folder name
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75 * @param bool $is_safe Security flag
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76 *
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77 * @see self::$app, self::$storage, self::$opt, self::$parts
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78 */
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79 function __construct($uid, $folder = null, $is_safe = false)
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80 {
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81 // decode combined UID-folder identifier
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82 if (preg_match('/^[0-9.]+-.+/', $uid)) {
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83 list($uid, $folder) = explode('-', $uid, 2);
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84 }
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85
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86 if (preg_match('/^([0-9]+)\.([0-9.]+)$/', $uid, $matches)) {
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87 $uid = $matches[1];
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88 $context = $matches[2];
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89 }
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90
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91 $this->uid = $uid;
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92 $this->context = $context;
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93 $this->app = rcube::get_instance();
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94 $this->storage = $this->app->get_storage();
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95 $this->folder = strlen($folder) ? $folder : $this->storage->get_folder();
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96
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97 // Set current folder
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98 $this->storage->set_folder($this->folder);
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99 $this->storage->set_options(array('all_headers' => true));
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100
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101 $this->headers = $this->storage->get_message($uid);
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102
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103 if (!$this->headers) {
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104 return;
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105 }
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106
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107 $this->set_safe($is_safe || $_SESSION['safe_messages'][$this->folder.':'.$uid]);
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108 $this->opt = array(
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109 'safe' => $this->is_safe,
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110 'prefer_html' => $this->app->config->get('prefer_html'),
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111 'get_url' => $this->app->url(array(
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112 'action' => 'get',
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113 'mbox' => $this->folder,
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114 'uid' => $uid),
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115 false, false, true)
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116 );
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117
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118 if (!empty($this->headers->structure)) {
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119 $this->get_mime_numbers($this->headers->structure);
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120 $this->parse_structure($this->headers->structure);
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121 }
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122 else if ($this->context === null) {
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123 $this->body = $this->storage->get_body($uid);
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124 }
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125
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126 $this->mime = new rcube_mime($this->headers->charset);
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127 $this->subject = $this->headers->get('subject');
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128 $from = $this->mime->decode_address_list($this->headers->from, 1);
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129 $this->sender = current($from);
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130
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131 // notify plugins and let them analyze this structured message object
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132 $this->app->plugins->exec_hook('message_load', array('object' => $this));
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133 }
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134
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135 /**
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136 * Return a (decoded) message header
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137 *
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138 * @param string $name Header name
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139 * @param bool $row Don't mime-decode the value
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140 * @return string Header value
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141 */
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142 public function get_header($name, $raw = false)
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143 {
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144 if (empty($this->headers)) {
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145 return null;
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146 }
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147
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148 return $this->headers->get($name, !$raw);
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149 }
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150
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151 /**
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152 * Set is_safe var and session data
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153 *
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154 * @param bool $safe enable/disable
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155 */
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156 public function set_safe($safe = true)
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157 {
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158 $_SESSION['safe_messages'][$this->folder.':'.$this->uid] = $this->is_safe = $safe;
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159 }
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160
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161 /**
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162 * Compose a valid URL for getting a message part
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163 *
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164 * @param string $mime_id Part MIME-ID
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165 * @param mixed $embed Mimetype class for parts to be embedded
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166 * @return string URL or false if part does not exist
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167 */
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168 public function get_part_url($mime_id, $embed = false)
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169 {
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170 if ($this->mime_parts[$mime_id])
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171 return $this->opt['get_url'] . '&_part=' . $mime_id . ($embed ? '&_embed=1&_mimeclass=' . $embed : '');
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172 else
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173 return false;
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174 }
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175
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176 /**
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177 * Get content of a specific part of this message
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178 *
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179 * @param string $mime_id Part MIME-ID
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180 * @param resource $fp File pointer to save the message part
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181 * @param boolean $skip_charset_conv Disables charset conversion
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182 * @param int $max_bytes Only read this number of bytes
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183 * @param boolean $formatted Enables formatting of text/* parts bodies
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184 *
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185 * @return string Part content
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186 * @deprecated
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187 */
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188 public function get_part_content($mime_id, $fp = null, $skip_charset_conv = false, $max_bytes = 0, $formatted = true)
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189 {
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190 if ($part = $this->mime_parts[$mime_id]) {
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191 // stored in message structure (winmail/inline-uuencode)
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192 if (!empty($part->body) || $part->encoding == 'stream') {
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193 if ($fp) {
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194 fwrite($fp, $part->body);
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195 }
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196 return $fp ? true : $part->body;
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197 }
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198
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199 // get from IMAP
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200 $this->storage->set_folder($this->folder);
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201
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202 return $this->storage->get_message_part($this->uid, $mime_id, $part,
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203 NULL, $fp, $skip_charset_conv, $max_bytes, $formatted);
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204 }
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205 }
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206
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207 /**
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208 * Get content of a specific part of this message
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209 *
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210 * @param string $mime_id Part ID
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211 * @param boolean $formatted Enables formatting of text/* parts bodies
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212 * @param int $max_bytes Only return/read this number of bytes
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213 * @param mixed $mode NULL to return a string, -1 to print body
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214 * or file pointer to save the body into
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215 *
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216 * @return string|bool Part content or operation status
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217 */
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218 public function get_part_body($mime_id, $formatted = false, $max_bytes = 0, $mode = null)
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219 {
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220 if (!($part = $this->mime_parts[$mime_id])) {
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221 return;
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222 }
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223
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224 // allow plugins to modify part body
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225 $plugin = $this->app->plugins->exec_hook('message_part_body',
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226 array('object' => $this, 'part' => $part));
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227
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228 // only text parts can be formatted
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229 $formatted = $formatted && $part->ctype_primary == 'text';
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230
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231 // part body not fetched yet... save in memory if it's small enough
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232 if ($part->body === null && is_numeric($mime_id) && $part->size < self::BODY_MAX_SIZE) {
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233 $this->storage->set_folder($this->folder);
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234 // Warning: body here should be always unformatted
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235 $part->body = $this->storage->get_message_part($this->uid, $mime_id, $part,
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236 null, null, true, 0, false);
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237 }
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238
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239 // body stored in message structure (winmail/inline-uuencode)
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240 if ($part->body !== null || $part->encoding == 'stream') {
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241 $body = $part->body;
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242
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243 if ($formatted && $body) {
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244 $body = self::format_part_body($body, $part, $this->headers->charset);
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245 }
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246
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247 if ($max_bytes && strlen($body) > $max_bytes) {
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248 $body = substr($body, 0, $max_bytes);
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249 }
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250
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251 if (is_resource($mode)) {
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252 if ($body !== false) {
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253 fwrite($mode, $body);
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254 rewind($mode);
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255 }
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256
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257 return $body !== false;
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258 }
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259
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260 if ($mode === -1) {
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261 if ($body !== false) {
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262 print($body);
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263 }
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264
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265 return $body !== false;
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266 }
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267
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268 return $body;
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269 }
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270
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271 // get the body from IMAP
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272 $this->storage->set_folder($this->folder);
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273
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274 $body = $this->storage->get_message_part($this->uid, $mime_id, $part,
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275 $mode === -1, is_resource($mode) ? $mode : null,
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276 !($mode && $formatted), $max_bytes, $mode && $formatted);
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277
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278 if (is_resource($mode)) {
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279 rewind($mode);
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280 return $body !== false;
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281 }
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282
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283 if (!$mode && $body && $formatted) {
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284 $body = self::format_part_body($body, $part, $this->headers->charset);
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285 }
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286
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287 return $body;
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288 }
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289
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290 /**
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291 * Format text message part for display
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292 *
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293 * @param string $body Part body
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294 * @param rcube_message_part $part Part object
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295 * @param string $default_charset Fallback charset if part charset is not specified
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296 *
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297 * @return string Formatted body
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298 */
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299 public static function format_part_body($body, $part, $default_charset = null)
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300 {
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301 // remove useless characters
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302 $body = preg_replace('/[\t\r\0\x0B]+\n/', "\n", $body);
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303
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304 // remove NULL characters if any (#1486189)
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305 if (strpos($body, "\x00") !== false) {
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306 $body = str_replace("\x00", '', $body);
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307 }
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308
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309 // detect charset...
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310 if (!$part->charset || strtoupper($part->charset) == 'US-ASCII') {
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311 // try to extract charset information from HTML meta tag (#1488125)
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312 if ($part->ctype_secondary == 'html' && preg_match('/<meta[^>]+charset=([a-z0-9-_]+)/i', $body, $m)) {
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313 $part->charset = strtoupper($m[1]);
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314 }
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315 else if ($default_charset) {
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316 $part->charset = $default_charset;
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317 }
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318 else {
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319 $rcube = rcube::get_instance();
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320 $part->charset = $rcube->config->get('default_charset', RCUBE_CHARSET);
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321 }
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322 }
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323
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324 // ..convert charset encoding
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325 $body = rcube_charset::convert($body, $part->charset);
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326
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327 return $body;
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328 }
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329
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330 /**
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331 * Determine if the message contains a HTML part. This must to be
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332 * a real part not an attachment (or its part)
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333 *
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334 * @param bool $enriched Enables checking for text/enriched parts too
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335 * @param rcube_message_part &$part Reference to the part if found
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336 *
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337 * @return bool True if a HTML is available, False if not
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338 */
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339 public function has_html_part($enriched = false, &$part = null)
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340 {
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341 // check all message parts
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342 foreach ($this->mime_parts as $part) {
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343 if ($part->mimetype == 'text/html' || ($enriched && $part->mimetype == 'text/enriched')) {
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344 // Skip if part is an attachment, don't use is_attachment() here
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345 if ($part->filename) {
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346 continue;
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347 }
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348
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349 if (!$part->size) {
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350 continue;
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351 }
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352
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353 if (!$this->check_context($part)) {
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354 continue;
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355 }
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356
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357 $level = explode('.', $part->mime_id);
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358 $depth = count($level);
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359 $last = '';
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360
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361 // Check if the part belongs to higher-level's multipart part
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362 // this can be alternative/related/signed/encrypted or mixed
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363 while (array_pop($level) !== null) {
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364 $parent_depth = count($level);
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365 if (!$parent_depth) {
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366 return true;
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367 }
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368
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369 $parent = $this->mime_parts[join('.', $level)];
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370
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371 if (!$this->check_context($parent)) {
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372 return true;
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373 }
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374
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375 $max_delta = $depth - (1 + ($last == 'multipart/alternative' ? 1 : 0));
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376 $last = $parent->real_mimetype ?: $parent->mimetype;
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377
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378 if (!preg_match('/^multipart\/(alternative|related|signed|encrypted|mixed)$/', $last)
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379 || ($last == 'multipart/mixed' && $parent_depth < $max_delta)) {
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380 continue 2;
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381 }
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382 }
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383
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384 return true;
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385 }
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386 }
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387
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388 $part = null;
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389
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390 return false;
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391 }
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392
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393 /**
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394 * Determine if the message contains a text/plain part. This must to be
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395 * a real part not an attachment (or its part)
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396 *
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397 * @param rcube_message_part &$part Reference to the part if found
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398 *
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399 * @return bool True if a plain text part is available, False if not
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400 */
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401 public function has_text_part(&$part = null)
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402 {
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403 // check all message parts
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404 foreach ($this->mime_parts as $part) {
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405 if ($part->mimetype == 'text/plain') {
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406 // Skip if part is an attachment, don't use is_attachment() here
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407 if ($part->filename) {
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408 continue;
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409 }
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410
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411 if (!$part->size) {
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412 continue;
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413 }
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414
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415 if (!$this->check_context($part)) {
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416 continue;
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417 }
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418
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419 $level = explode('.', $part->mime_id);
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420
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421 // Check if the part belongs to higher-level's alternative/related
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422 while (array_pop($level) !== null) {
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423 if (!count($level)) {
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424 return true;
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425 }
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|
|
426
|
|
|
427 $parent = $this->mime_parts[join('.', $level)];
|
|
|
428
|
|
|
429 if (!$this->check_context($parent)) {
|
|
|
430 return true;
|
|
|
431 }
|
|
|
432
|
|
|
433 if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') {
|
|
|
434 continue 2;
|
|
|
435 }
|
|
|
436 }
|
|
|
437
|
|
|
438 return true;
|
|
|
439 }
|
|
|
440 }
|
|
|
441
|
|
|
442 $part = null;
|
|
|
443
|
|
|
444 return false;
|
|
|
445 }
|
|
|
446
|
|
|
447 /**
|
|
|
448 * Return the first HTML part of this message
|
|
|
449 *
|
|
|
450 * @param rcube_message_part &$part Reference to the part if found
|
|
|
451 * @param bool $enriched Enables checking for text/enriched parts too
|
|
|
452 *
|
|
|
453 * @return string HTML message part content
|
|
|
454 */
|
|
|
455 public function first_html_part(&$part = null, $enriched = false)
|
|
|
456 {
|
|
|
457 if ($this->has_html_part($enriched, $part)) {
|
|
|
458 $body = $this->get_part_body($part->mime_id, true);
|
|
|
459
|
|
|
460 if ($part->mimetype == 'text/enriched') {
|
|
|
461 $body = rcube_enriched::to_html($body);
|
|
|
462 }
|
|
|
463
|
|
|
464 return $body;
|
|
|
465 }
|
|
|
466 }
|
|
|
467
|
|
|
468 /**
|
|
|
469 * Return the first text part of this message.
|
|
|
470 * If there's no text/plain part but $strict=true and text/html part
|
|
|
471 * exists, it will be returned in text/plain format.
|
|
|
472 *
|
|
|
473 * @param rcube_message_part &$part Reference to the part if found
|
|
|
474 * @param bool $strict Check only text/plain parts
|
|
|
475 *
|
|
|
476 * @return string Plain text message/part content
|
|
|
477 */
|
|
|
478 public function first_text_part(&$part = null, $strict = false)
|
|
|
479 {
|
|
|
480 // no message structure, return complete body
|
|
|
481 if (empty($this->parts)) {
|
|
|
482 return $this->body;
|
|
|
483 }
|
|
|
484
|
|
|
485 if ($this->has_text_part($part)) {
|
|
|
486 return $this->get_part_body($part->mime_id, true);
|
|
|
487 }
|
|
|
488
|
|
|
489 if (!$strict && ($body = $this->first_html_part($part, true))) {
|
|
|
490 // create instance of html2text class
|
|
|
491 $h2t = new rcube_html2text($body);
|
|
|
492 return $h2t->get_text();
|
|
|
493 }
|
|
|
494 }
|
|
|
495
|
|
|
496 /**
|
|
|
497 * Return message parts in current context
|
|
|
498 */
|
|
|
499 public function mime_parts()
|
|
|
500 {
|
|
|
501 if ($this->context === null) {
|
|
|
502 return $this->mime_parts;
|
|
|
503 }
|
|
|
504
|
|
|
505 $parts = array();
|
|
|
506
|
|
|
507 foreach ($this->mime_parts as $part_id => $part) {
|
|
|
508 if ($this->check_context($part)) {
|
|
|
509 $parts[$part_id] = $part;
|
|
|
510 }
|
|
|
511 }
|
|
|
512
|
|
|
513 return $parts;
|
|
|
514 }
|
|
|
515
|
|
|
516 /**
|
|
|
517 * Checks if part of the message is an attachment (or part of it)
|
|
|
518 *
|
|
|
519 * @param rcube_message_part $part Message part
|
|
|
520 *
|
|
|
521 * @return bool True if the part is an attachment part
|
|
|
522 */
|
|
|
523 public function is_attachment($part)
|
|
|
524 {
|
|
|
525 foreach ($this->attachments as $att_part) {
|
|
|
526 if ($att_part->mime_id == $part->mime_id) {
|
|
|
527 return true;
|
|
|
528 }
|
|
|
529
|
|
|
530 // check if the part is a subpart of another attachment part (message/rfc822)
|
|
|
531 if ($att_part->mimetype == 'message/rfc822') {
|
|
|
532 if (in_array($part, (array)$att_part->parts)) {
|
|
|
533 return true;
|
|
|
534 }
|
|
|
535 }
|
|
|
536 }
|
|
|
537
|
|
|
538 return false;
|
|
|
539 }
|
|
|
540
|
|
|
541 /**
|
|
|
542 * In a multipart/encrypted encrypted message,
|
|
|
543 * find the encrypted message payload part.
|
|
|
544 *
|
|
|
545 * @return rcube_message_part
|
|
|
546 */
|
|
|
547 public function get_multipart_encrypted_part()
|
|
|
548 {
|
|
|
549 foreach ($this->mime_parts as $mime_id => $mpart) {
|
|
|
550 if ($mpart->mimetype == 'multipart/encrypted') {
|
|
|
551 $this->pgp_mime = true;
|
|
|
552 }
|
|
|
553 if ($this->pgp_mime && ($mpart->mimetype == 'application/octet-stream' ||
|
|
|
554 (!empty($mpart->filename) && $mpart->filename != 'version.txt'))) {
|
|
|
555 $this->encrypted_part = $mime_id;
|
|
|
556 return $mpart;
|
|
|
557 }
|
|
|
558 }
|
|
|
559
|
|
|
560 return false;
|
|
|
561 }
|
|
|
562
|
|
|
563 /**
|
|
|
564 * Read the message structure returend by the IMAP server
|
|
|
565 * and build flat lists of content parts and attachments
|
|
|
566 *
|
|
|
567 * @param rcube_message_part $structure Message structure node
|
|
|
568 * @param bool $recursive True when called recursively
|
|
|
569 */
|
|
|
570 private function parse_structure($structure, $recursive = false)
|
|
|
571 {
|
|
|
572 // real content-type of message/rfc822 part
|
|
|
573 if ($structure->mimetype == 'message/rfc822' && $structure->real_mimetype) {
|
|
|
574 $mimetype = $structure->real_mimetype;
|
|
|
575
|
|
|
576 // parse headers from message/rfc822 part
|
|
|
577 if (!isset($structure->headers['subject']) && !isset($structure->headers['from'])) {
|
|
|
578 list($headers, ) = explode("\r\n\r\n", $this->get_part_body($structure->mime_id, false, 32768));
|
|
|
579 $structure->headers = rcube_mime::parse_headers($headers);
|
|
|
580
|
|
|
581 if ($this->context == $structure->mime_id) {
|
|
|
582 $this->headers = rcube_message_header::from_array($structure->headers);
|
|
|
583 }
|
|
|
584 }
|
|
|
585 }
|
|
|
586 else {
|
|
|
587 $mimetype = $structure->mimetype;
|
|
|
588 }
|
|
|
589
|
|
|
590 // show message headers
|
|
|
591 if ($recursive && is_array($structure->headers) &&
|
|
|
592 (isset($structure->headers['subject']) || $structure->headers['from'] || $structure->headers['to'])
|
|
|
593 ) {
|
|
|
594 $c = new stdClass;
|
|
|
595 $c->type = 'headers';
|
|
|
596 $c->headers = $structure->headers;
|
|
|
597 $this->add_part($c);
|
|
|
598 }
|
|
|
599
|
|
|
600 // Allow plugins to handle message parts
|
|
|
601 $plugin = $this->app->plugins->exec_hook('message_part_structure',
|
|
|
602 array('object' => $this, 'structure' => $structure,
|
|
|
603 'mimetype' => $mimetype, 'recursive' => $recursive));
|
|
|
604
|
|
|
605 if ($plugin['abort']) {
|
|
|
606 return;
|
|
|
607 }
|
|
|
608
|
|
|
609 $structure = $plugin['structure'];
|
|
|
610 $mimetype = $plugin['mimetype'];
|
|
|
611 $recursive = $plugin['recursive'];
|
|
|
612
|
|
|
613 list($message_ctype_primary, $message_ctype_secondary) = explode('/', $mimetype);
|
|
|
614
|
|
|
615 // print body if message doesn't have multiple parts
|
|
|
616 if ($message_ctype_primary == 'text' && !$recursive) {
|
|
|
617 // parts with unsupported type add to attachments list
|
|
|
618 if (!in_array($message_ctype_secondary, array('plain', 'html', 'enriched'))) {
|
|
|
619 $this->add_part($structure, 'attachment');
|
|
|
620 return;
|
|
|
621 }
|
|
|
622
|
|
|
623 $structure->type = 'content';
|
|
|
624 $this->add_part($structure);
|
|
|
625
|
|
|
626 // Parse simple (plain text) message body
|
|
|
627 if ($message_ctype_secondary == 'plain') {
|
|
|
628 foreach ((array)$this->uu_decode($structure) as $uupart) {
|
|
|
629 $this->mime_parts[$uupart->mime_id] = $uupart;
|
|
|
630 $this->add_part($uupart, 'attachment');
|
|
|
631 }
|
|
|
632 }
|
|
|
633 }
|
|
|
634 // the same for pgp signed messages
|
|
|
635 else if ($mimetype == 'application/pgp' && !$recursive) {
|
|
|
636 $structure->type = 'content';
|
|
|
637 $this->add_part($structure);
|
|
|
638 }
|
|
|
639 // message contains (more than one!) alternative parts
|
|
|
640 else if ($mimetype == 'multipart/alternative'
|
|
|
641 && is_array($structure->parts) && count($structure->parts) > 1
|
|
|
642 ) {
|
|
|
643 // get html/plaintext parts, other add to attachments list
|
|
|
644 foreach ($structure->parts as $p => $sub_part) {
|
|
|
645 $sub_mimetype = $sub_part->mimetype;
|
|
|
646 $is_multipart = preg_match('/^multipart\/(related|relative|mixed|alternative)/', $sub_mimetype);
|
|
|
647
|
|
|
648 // skip empty text parts
|
|
|
649 if (!$sub_part->size && !$is_multipart) {
|
|
|
650 continue;
|
|
|
651 }
|
|
|
652
|
|
|
653 // We've encountered (malformed) messages with more than
|
|
|
654 // one text/plain or text/html part here. There's no way to choose
|
|
|
655 // which one is better, so we'll display first of them and add
|
|
|
656 // others as attachments (#1489358)
|
|
|
657
|
|
|
658 // check if sub part is
|
|
|
659 if ($is_multipart)
|
|
|
660 $related_part = $p;
|
|
|
661 else if ($sub_mimetype == 'text/plain' && !$plain_part)
|
|
|
662 $plain_part = $p;
|
|
|
663 else if ($sub_mimetype == 'text/html' && !$html_part) {
|
|
|
664 $html_part = $p;
|
|
|
665 $this->got_html_part = true;
|
|
|
666 }
|
|
|
667 else if ($sub_mimetype == 'text/enriched' && !$enriched_part)
|
|
|
668 $enriched_part = $p;
|
|
|
669 else {
|
|
|
670 // add unsupported/unrecognized parts to attachments list
|
|
|
671 $this->add_part($sub_part, 'attachment');
|
|
|
672 }
|
|
|
673 }
|
|
|
674
|
|
|
675 // parse related part (alternative part could be in here)
|
|
|
676 if ($related_part !== null && !$this->parse_alternative) {
|
|
|
677 $this->parse_alternative = true;
|
|
|
678 $this->parse_structure($structure->parts[$related_part], true);
|
|
|
679 $this->parse_alternative = false;
|
|
|
680
|
|
|
681 // if plain part was found, we should unset it if html is preferred
|
|
|
682 if ($this->opt['prefer_html'] && count($this->parts)) {
|
|
|
683 $plain_part = null;
|
|
|
684 }
|
|
|
685 }
|
|
|
686
|
|
|
687 // choose html/plain part to print
|
|
|
688 if ($html_part !== null && $this->opt['prefer_html']) {
|
|
|
689 $print_part = $structure->parts[$html_part];
|
|
|
690 }
|
|
|
691 else if ($enriched_part !== null) {
|
|
|
692 $print_part = $structure->parts[$enriched_part];
|
|
|
693 }
|
|
|
694 else if ($plain_part !== null) {
|
|
|
695 $print_part = $structure->parts[$plain_part];
|
|
|
696 }
|
|
|
697
|
|
|
698 // add the right message body
|
|
|
699 if (is_object($print_part)) {
|
|
|
700 $print_part->type = 'content';
|
|
|
701
|
|
|
702 // Allow plugins to handle also this part
|
|
|
703 $plugin = $this->app->plugins->exec_hook('message_part_structure',
|
|
|
704 array('object' => $this, 'structure' => $print_part,
|
|
|
705 'mimetype' => $print_part->mimetype, 'recursive' => true));
|
|
|
706
|
|
|
707 if (!$plugin['abort']) {
|
|
|
708 $this->add_part($print_part);
|
|
|
709 }
|
|
|
710 }
|
|
|
711 // show plaintext warning
|
|
|
712 else if ($html_part !== null && empty($this->parts)) {
|
|
|
713 $c = new stdClass;
|
|
|
714 $c->type = 'content';
|
|
|
715 $c->ctype_primary = 'text';
|
|
|
716 $c->ctype_secondary = 'plain';
|
|
|
717 $c->mimetype = 'text/plain';
|
|
|
718 $c->realtype = 'text/html';
|
|
|
719
|
|
|
720 $this->add_part($c);
|
|
|
721 }
|
|
|
722 }
|
|
|
723 // this is an ecrypted message -> create a plaintext body with the according message
|
|
|
724 else if ($mimetype == 'multipart/encrypted') {
|
|
|
725 $p = new stdClass;
|
|
|
726 $p->type = 'content';
|
|
|
727 $p->ctype_primary = 'text';
|
|
|
728 $p->ctype_secondary = 'plain';
|
|
|
729 $p->mimetype = 'text/plain';
|
|
|
730 $p->realtype = 'multipart/encrypted';
|
|
|
731 $p->mime_id = $structure->mime_id;
|
|
|
732
|
|
|
733 $this->add_part($p);
|
|
|
734
|
|
|
735 // add encrypted payload part as attachment
|
|
|
736 if (is_array($structure->parts)) {
|
|
|
737 for ($i=0; $i < count($structure->parts); $i++) {
|
|
|
738 $subpart = $structure->parts[$i];
|
|
|
739 if ($subpart->mimetype == 'application/octet-stream' || !empty($subpart->filename)) {
|
|
|
740 $this->add_part($subpart, 'attachment');
|
|
|
741 }
|
|
|
742 }
|
|
|
743 }
|
|
|
744 }
|
|
|
745 // this is an S/MIME ecrypted message -> create a plaintext body with the according message
|
|
|
746 else if ($mimetype == 'application/pkcs7-mime') {
|
|
|
747 $p = new stdClass;
|
|
|
748 $p->type = 'content';
|
|
|
749 $p->ctype_primary = 'text';
|
|
|
750 $p->ctype_secondary = 'plain';
|
|
|
751 $p->mimetype = 'text/plain';
|
|
|
752 $p->realtype = 'application/pkcs7-mime';
|
|
|
753 $p->mime_id = $structure->mime_id;
|
|
|
754
|
|
|
755 $this->add_part($p);
|
|
|
756
|
|
|
757 if (!empty($structure->filename)) {
|
|
|
758 $this->add_part($structure, 'attachment');
|
|
|
759 }
|
|
|
760 }
|
|
|
761 // message contains multiple parts
|
|
|
762 else if (is_array($structure->parts) && !empty($structure->parts)) {
|
|
|
763 // iterate over parts
|
|
|
764 for ($i=0; $i < count($structure->parts); $i++) {
|
|
|
765 $mail_part = &$structure->parts[$i];
|
|
|
766 $primary_type = $mail_part->ctype_primary;
|
|
|
767 $secondary_type = $mail_part->ctype_secondary;
|
|
|
768 $part_mimetype = $mail_part->mimetype;
|
|
|
769
|
|
|
770 // multipart/alternative or message/rfc822
|
|
|
771 if ($primary_type == 'multipart' || $part_mimetype == 'message/rfc822') {
|
|
|
772 $this->parse_structure($mail_part, true);
|
|
|
773
|
|
|
774 // list message/rfc822 as attachment as well (mostly .eml)
|
|
|
775 if ($primary_type == 'message' && !empty($mail_part->filename)) {
|
|
|
776 $this->add_part($mail_part, 'attachment');
|
|
|
777 }
|
|
|
778 }
|
|
|
779 // part text/[plain|html] or delivery status
|
|
|
780 else if ((($part_mimetype == 'text/plain' || $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') ||
|
|
|
781 in_array($part_mimetype, array('message/delivery-status', 'text/rfc822-headers', 'message/disposition-notification'))
|
|
|
782 ) {
|
|
|
783 // Allow plugins to handle also this part
|
|
|
784 $plugin = $this->app->plugins->exec_hook('message_part_structure',
|
|
|
785 array('object' => $this, 'structure' => $mail_part,
|
|
|
786 'mimetype' => $part_mimetype, 'recursive' => true));
|
|
|
787
|
|
|
788 if ($plugin['abort']) {
|
|
|
789 continue;
|
|
|
790 }
|
|
|
791
|
|
|
792 if ($part_mimetype == 'text/html' && $mail_part->size) {
|
|
|
793 $this->got_html_part = true;
|
|
|
794 }
|
|
|
795
|
|
|
796 $mail_part = $plugin['structure'];
|
|
|
797 list($primary_type, $secondary_type) = explode('/', $plugin['mimetype']);
|
|
|
798
|
|
|
799 // add text part if it matches the prefs
|
|
|
800 if (!$this->parse_alternative ||
|
|
|
801 ($secondary_type == 'html' && $this->opt['prefer_html']) ||
|
|
|
802 ($secondary_type == 'plain' && !$this->opt['prefer_html'])
|
|
|
803 ) {
|
|
|
804 $mail_part->type = 'content';
|
|
|
805 $this->add_part($mail_part);
|
|
|
806 }
|
|
|
807
|
|
|
808 // list as attachment as well
|
|
|
809 if (!empty($mail_part->filename)) {
|
|
|
810 $this->add_part($mail_part, 'attachment');
|
|
|
811 }
|
|
|
812 }
|
|
|
813 // ignore "virtual" protocol parts
|
|
|
814 else if ($primary_type == 'protocol') {
|
|
|
815 continue;
|
|
|
816 }
|
|
|
817 // part is Microsoft Outlook TNEF (winmail.dat)
|
|
|
818 else if ($part_mimetype == 'application/ms-tnef') {
|
|
|
819 $tnef_parts = (array) $this->tnef_decode($mail_part);
|
|
|
820 foreach ($tnef_parts as $tpart) {
|
|
|
821 $this->mime_parts[$tpart->mime_id] = $tpart;
|
|
|
822 $this->add_part($tpart, 'attachment');
|
|
|
823 }
|
|
|
824
|
|
|
825 // add winmail.dat to the list if it's content is unknown
|
|
|
826 if (empty($tnef_parts) && !empty($mail_part->filename)) {
|
|
|
827 $this->mime_parts[$mail_part->mime_id] = $mail_part;
|
|
|
828 $this->add_part($mail_part, 'attachment');
|
|
|
829 }
|
|
|
830 }
|
|
|
831 // part is a file/attachment
|
|
|
832 else if (preg_match('/^(inline|attach)/', $mail_part->disposition) ||
|
|
|
833 $mail_part->headers['content-id'] ||
|
|
|
834 ($mail_part->filename &&
|
|
|
835 (empty($mail_part->disposition) || preg_match('/^[a-z0-9!#$&.+^_-]+$/i', $mail_part->disposition)))
|
|
|
836 ) {
|
|
|
837 // skip apple resource forks
|
|
|
838 if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile')
|
|
|
839 continue;
|
|
|
840
|
|
|
841 // part belongs to a related message and is linked
|
|
|
842 if (preg_match('/^multipart\/(related|relative)/', $mimetype)
|
|
|
843 && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])
|
|
|
844 ) {
|
|
|
845 if ($mail_part->headers['content-id'])
|
|
|
846 $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']);
|
|
|
847 if ($mail_part->headers['content-location'])
|
|
|
848 $mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location'];
|
|
|
849
|
|
|
850 $this->add_part($mail_part, 'inline');
|
|
|
851 }
|
|
|
852 // regular attachment with valid content type
|
|
|
853 // (content-type name regexp according to RFC4288.4.2)
|
|
|
854 else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) {
|
|
|
855 $this->add_part($mail_part, 'attachment');
|
|
|
856 }
|
|
|
857 // attachment with invalid content type
|
|
|
858 // replace malformed content type with application/octet-stream (#1487767)
|
|
|
859 else if ($mail_part->filename) {
|
|
|
860 $mail_part->ctype_primary = 'application';
|
|
|
861 $mail_part->ctype_secondary = 'octet-stream';
|
|
|
862 $mail_part->mimetype = 'application/octet-stream';
|
|
|
863
|
|
|
864 $this->add_part($mail_part, 'attachment');
|
|
|
865 }
|
|
|
866 }
|
|
|
867 // calendar part not marked as attachment (#1490325)
|
|
|
868 else if ($part_mimetype == 'text/calendar') {
|
|
|
869 if (!$mail_part->filename) {
|
|
|
870 $mail_part->filename = 'calendar.ics';
|
|
|
871 }
|
|
|
872
|
|
|
873 $this->add_part($mail_part, 'attachment');
|
|
|
874 }
|
|
|
875 }
|
|
|
876
|
|
|
877 // if this was a related part try to resolve references
|
|
|
878 if (preg_match('/^multipart\/(related|relative)/', $mimetype) && count($this->inline_parts)) {
|
|
|
879 $a_replaces = array();
|
|
|
880 $img_regexp = '/^image\/(gif|jpe?g|png|tiff|bmp|svg)/';
|
|
|
881
|
|
|
882 foreach ($this->inline_parts as $inline_object) {
|
|
|
883 $part_url = $this->get_part_url($inline_object->mime_id, $inline_object->ctype_primary);
|
|
|
884 if (isset($inline_object->content_id))
|
|
|
885 $a_replaces['cid:'.$inline_object->content_id] = $part_url;
|
|
|
886 if ($inline_object->content_location) {
|
|
|
887 $a_replaces[$inline_object->content_location] = $part_url;
|
|
|
888 }
|
|
|
889
|
|
|
890 if (!empty($inline_object->filename)) {
|
|
|
891 // MS Outlook sends sometimes non-related attachments as related
|
|
|
892 // In this case multipart/related message has only one text part
|
|
|
893 // We'll add all such attachments to the attachments list
|
|
|
894 if (!isset($this->got_html_part)) {
|
|
|
895 $this->add_part($inline_object, 'attachment');
|
|
|
896 }
|
|
|
897 // MS Outlook sometimes also adds non-image attachments as related
|
|
|
898 // We'll add all such attachments to the attachments list
|
|
|
899 // Warning: some browsers support pdf in <img/>
|
|
|
900 else if (!preg_match($img_regexp, $inline_object->mimetype)) {
|
|
|
901 $this->add_part($inline_object, 'attachment');
|
|
|
902 }
|
|
|
903 // @TODO: we should fetch HTML body and find attachment's content-id
|
|
|
904 // to handle also image attachments without reference in the body
|
|
|
905 // @TODO: should we list all image attachments in text mode?
|
|
|
906 }
|
|
|
907 }
|
|
|
908
|
|
|
909 // add replace array to each content part
|
|
|
910 // (will be applied later when part body is available)
|
|
|
911 foreach ($this->parts as $i => $part) {
|
|
|
912 if ($part->type == 'content')
|
|
|
913 $this->parts[$i]->replaces = $a_replaces;
|
|
|
914 }
|
|
|
915 }
|
|
|
916 }
|
|
|
917 // message is a single part non-text
|
|
|
918 else if ($structure->filename || preg_match('/^application\//i', $mimetype)) {
|
|
|
919 $this->add_part($structure, 'attachment');
|
|
|
920 }
|
|
|
921 }
|
|
|
922
|
|
|
923 /**
|
|
|
924 * Fill a flat array with references to all parts, indexed by part numbers
|
|
|
925 *
|
|
|
926 * @param rcube_message_part $part Message body structure
|
|
|
927 */
|
|
|
928 private function get_mime_numbers(&$part)
|
|
|
929 {
|
|
|
930 if (strlen($part->mime_id))
|
|
|
931 $this->mime_parts[$part->mime_id] = &$part;
|
|
|
932
|
|
|
933 if (is_array($part->parts))
|
|
|
934 for ($i=0; $i<count($part->parts); $i++)
|
|
|
935 $this->get_mime_numbers($part->parts[$i]);
|
|
|
936 }
|
|
|
937
|
|
|
938 /**
|
|
|
939 * Add a part to object parts array(s) (with context check)
|
|
|
940 */
|
|
|
941 private function add_part($part, $type = null)
|
|
|
942 {
|
|
|
943 if ($this->check_context($part)) {
|
|
|
944 switch ($type) {
|
|
|
945 case 'inline': $this->inline_parts[] = $part; break;
|
|
|
946 case 'attachment': $this->attachments[] = $part; break;
|
|
|
947 default: $this->parts[] = $part; break;
|
|
|
948 }
|
|
|
949 }
|
|
|
950 }
|
|
|
951
|
|
|
952 /**
|
|
|
953 * Check if specified part belongs to the current context
|
|
|
954 */
|
|
|
955 private function check_context($part)
|
|
|
956 {
|
|
|
957 return $this->context === null || strpos($part->mime_id, $this->context . '.') === 0;
|
|
|
958 }
|
|
|
959
|
|
|
960 /**
|
|
|
961 * Decode a Microsoft Outlook TNEF part (winmail.dat)
|
|
|
962 *
|
|
|
963 * @param rcube_message_part $part Message part to decode
|
|
|
964 * @return array
|
|
|
965 */
|
|
|
966 function tnef_decode(&$part)
|
|
|
967 {
|
|
|
968 // @TODO: attachment may be huge, handle body via file
|
|
|
969 $body = $this->get_part_body($part->mime_id);
|
|
|
970 $tnef = new rcube_tnef_decoder;
|
|
|
971 $tnef_arr = $tnef->decompress($body);
|
|
|
972 $parts = array();
|
|
|
973
|
|
|
974 unset($body);
|
|
|
975
|
|
|
976 foreach ($tnef_arr as $pid => $winatt) {
|
|
|
977 $tpart = new rcube_message_part;
|
|
|
978
|
|
|
979 $tpart->filename = $this->fix_attachment_name(trim($winatt['name']), $part);
|
|
|
980 $tpart->encoding = 'stream';
|
|
|
981 $tpart->ctype_primary = trim(strtolower($winatt['type']));
|
|
|
982 $tpart->ctype_secondary = trim(strtolower($winatt['subtype']));
|
|
|
983 $tpart->mimetype = $tpart->ctype_primary . '/' . $tpart->ctype_secondary;
|
|
|
984 $tpart->mime_id = 'winmail.' . $part->mime_id . '.' . $pid;
|
|
|
985 $tpart->size = $winatt['size'];
|
|
|
986 $tpart->body = $winatt['stream'];
|
|
|
987
|
|
|
988 $parts[] = $tpart;
|
|
|
989 unset($tnef_arr[$pid]);
|
|
|
990 }
|
|
|
991
|
|
|
992 return $parts;
|
|
|
993 }
|
|
|
994
|
|
|
995 /**
|
|
|
996 * Parse message body for UUencoded attachments bodies
|
|
|
997 *
|
|
|
998 * @param rcube_message_part $part Message part to decode
|
|
|
999 * @return array
|
|
|
1000 */
|
|
|
1001 function uu_decode(&$part)
|
|
|
1002 {
|
|
|
1003 // @TODO: messages may be huge, handle body via file
|
|
|
1004 $part->body = $this->get_part_body($part->mime_id);
|
|
|
1005 $parts = array();
|
|
|
1006 $pid = 0;
|
|
|
1007
|
|
|
1008 // FIXME: line length is max.65?
|
|
|
1009 $uu_regexp_begin = '/begin [0-7]{3,4} ([^\r\n]+)\r?\n/s';
|
|
|
1010 $uu_regexp_end = '/`\r?\nend((\r?\n)|($))/s';
|
|
|
1011
|
|
|
1012 while (preg_match($uu_regexp_begin, $part->body, $matches, PREG_OFFSET_CAPTURE)) {
|
|
|
1013 $startpos = $matches[0][1];
|
|
|
1014
|
|
|
1015 if (!preg_match($uu_regexp_end, $part->body, $m, PREG_OFFSET_CAPTURE, $startpos)) {
|
|
|
1016 break;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019 $endpos = $m[0][1];
|
|
|
1020 $begin_len = strlen($matches[0][0]);
|
|
|
1021 $end_len = strlen($m[0][0]);
|
|
|
1022
|
|
|
1023 // extract attachment body
|
|
|
1024 $filebody = substr($part->body, $startpos + $begin_len, $endpos - $startpos - $begin_len - 1);
|
|
|
1025 $filebody = str_replace("\r\n", "\n", $filebody);
|
|
|
1026
|
|
|
1027 // remove attachment body from the message body
|
|
|
1028 $part->body = substr_replace($part->body, '', $startpos, $endpos + $end_len - $startpos);
|
|
|
1029 // mark body as modified so it will not be cached by rcube_imap_cache
|
|
|
1030 $part->body_modified = true;
|
|
|
1031
|
|
|
1032 // add attachments to the structure
|
|
|
1033 $uupart = new rcube_message_part;
|
|
|
1034 $uupart->filename = trim($matches[1][0]);
|
|
|
1035 $uupart->encoding = 'stream';
|
|
|
1036 $uupart->body = convert_uudecode($filebody);
|
|
|
1037 $uupart->size = strlen($uupart->body);
|
|
|
1038 $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid;
|
|
|
1039
|
|
|
1040 $ctype = rcube_mime::file_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
|
|
|
1041 $uupart->mimetype = $ctype;
|
|
|
1042 list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);
|
|
|
1043
|
|
|
1044 $parts[] = $uupart;
|
|
|
1045 $pid++;
|
|
|
1046 }
|
|
|
1047
|
|
|
1048 return $parts;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 /**
|
|
|
1052 * Fix attachment name encoding if needed/possible
|
|
|
1053 */
|
|
|
1054 protected function fix_attachment_name($name, $part)
|
|
|
1055 {
|
|
|
1056 if ($name == rcube_charset::clean($name)) {
|
|
|
1057 return $name;
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 // find charset from part or its parent(s)
|
|
|
1061 if ($part->charset) {
|
|
|
1062 $charsets[] = $part->charset;
|
|
|
1063 }
|
|
|
1064 else {
|
|
|
1065 // check first part (common case)
|
|
|
1066 $n = strpos($part->mime_id, '.') ? preg_replace('/\.[0-9]+$/', '', $part->mime_id) . '.1' : 1;
|
|
|
1067 if (($_part = $this->mime_parts[$n]) && $_part->charset) {
|
|
|
1068 $charsets[] = $_part->charset;
|
|
|
1069 }
|
|
|
1070
|
|
|
1071 // check parents' charset
|
|
|
1072 $items = explode('.', $part->mime_id);
|
|
|
1073 for ($i = count($items)-1; $i > 0; $i--) {
|
|
|
1074 $last = array_pop($items);
|
|
|
1075 $parent = $this->mime_parts[join('.', $items)];
|
|
|
1076
|
|
|
1077 if ($parent && $parent->charset) {
|
|
|
1078 $charsets[] = $parent->charset;
|
|
|
1079 }
|
|
|
1080 }
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 if ($this->headers->charset) {
|
|
|
1084 $charsets[] = $this->headers->charset;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087 if (empty($charsets)) {
|
|
|
1088 $rcube = rcube::get_instance();
|
|
|
1089 $charsets[] = rcube_charset::detect($name, $rcube->config->get('default_charset', RCUBE_CHARSET));
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 foreach (array_unique($charsets) as $charset) {
|
|
|
1093 $_name = rcube_charset::convert($name, $charset);
|
|
|
1094
|
|
|
1095 if ($_name == rcube_charset::clean($_name)) {
|
|
|
1096 if (!$part->charset) {
|
|
|
1097 $part->charset = $charset;
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 return $_name;
|
|
|
1101 }
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 return $name;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 /**
|
|
|
1108 * Deprecated methods (to be removed)
|
|
|
1109 */
|
|
|
1110
|
|
|
1111 public static function unfold_flowed($text)
|
|
|
1112 {
|
|
|
1113 return rcube_mime::unfold_flowed($text);
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 public static function format_flowed($text, $length = 72)
|
|
|
1117 {
|
|
|
1118 return rcube_mime::format_flowed($text, $length);
|
|
|
1119 }
|
|
|
1120 }
|
