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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) 2005-2016, The Roundcube Dev Team |
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7 | Copyright (C) 2011-2016, Kolab Systems AG |
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8 | |
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9 | Licensed under the GNU General Public License version 3 or |
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10 | any later version with exceptions for skins & plugins. |
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11 | See the README file for a full license statement. |
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12 | |
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13 | PURPOSE: |
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14 | MIME message parsing utilities |
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15 +-----------------------------------------------------------------------+
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16 | Author: Thomas Bruederli <roundcube@gmail.com> |
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17 | Author: Aleksander Machniak <alec@alec.pl> |
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18 +-----------------------------------------------------------------------+
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19 */
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20
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21 /**
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22 * Class for parsing MIME messages
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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 * @author Aleksander Machniak <alec@alec.pl>
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28 */
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29 class rcube_mime
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30 {
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31 private static $default_charset;
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32
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33
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34 /**
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35 * Object constructor.
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36 */
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37 function __construct($default_charset = null)
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38 {
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39 self::$default_charset = $default_charset;
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40 }
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41
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42 /**
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43 * Returns message/object character set name
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44 *
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45 * @return string Character set name
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46 */
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47 public static function get_charset()
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48 {
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49 if (self::$default_charset) {
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50 return self::$default_charset;
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51 }
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52
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53 if ($charset = rcube::get_instance()->config->get('default_charset')) {
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54 return $charset;
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55 }
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56
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57 return RCUBE_CHARSET;
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58 }
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59
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60 /**
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61 * Parse the given raw message source and return a structure
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62 * of rcube_message_part objects.
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63 *
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64 * It makes use of the rcube_mime_decode library
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65 *
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66 * @param string $raw_body The message source
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67 *
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68 * @return object rcube_message_part The message structure
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69 */
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70 public static function parse_message($raw_body)
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71 {
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72 $conf = array(
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73 'include_bodies' => true,
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74 'decode_bodies' => true,
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75 'decode_headers' => false,
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76 'default_charset' => self::get_charset(),
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77 );
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78
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79 $mime = new rcube_mime_decode($conf);
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80
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81 return $mime->decode($raw_body);
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82 }
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83
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84 /**
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85 * Split an address list into a structured array list
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86 *
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87 * @param string $input Input string
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88 * @param int $max List only this number of addresses
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89 * @param boolean $decode Decode address strings
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90 * @param string $fallback Fallback charset if none specified
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91 * @param boolean $addronly Return flat array with e-mail addresses only
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92 *
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93 * @return array Indexed list of addresses
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94 */
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95 static function decode_address_list($input, $max = null, $decode = true, $fallback = null, $addronly = false)
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96 {
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97 $a = self::parse_address_list($input, $decode, $fallback);
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98 $out = array();
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99 $j = 0;
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100
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101 // Special chars as defined by RFC 822 need to in quoted string (or escaped).
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102 $special_chars = '[\(\)\<\>\\\.\[\]@,;:"]';
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103
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104 if (!is_array($a)) {
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105 return $out;
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106 }
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107
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108 foreach ($a as $val) {
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109 $j++;
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110 $address = trim($val['address']);
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111
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112 if ($addronly) {
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113 $out[$j] = $address;
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114 }
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115 else {
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116 $name = trim($val['name']);
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117 if ($name && $address && $name != $address)
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118 $string = sprintf('%s <%s>', preg_match("/$special_chars/", $name) ? '"'.addcslashes($name, '"').'"' : $name, $address);
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119 else if ($address)
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120 $string = $address;
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121 else if ($name)
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122 $string = $name;
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123
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124 $out[$j] = array('name' => $name, 'mailto' => $address, 'string' => $string);
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125 }
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126
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127 if ($max && $j==$max)
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128 break;
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129 }
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130
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131 return $out;
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132 }
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133
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134 /**
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135 * Decode a message header value
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136 *
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137 * @param string $input Header value
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138 * @param string $fallback Fallback charset if none specified
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139 *
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140 * @return string Decoded string
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141 */
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142 public static function decode_header($input, $fallback = null)
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143 {
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144 $str = self::decode_mime_string((string)$input, $fallback);
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145
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146 return $str;
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147 }
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148
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149 /**
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150 * Decode a mime-encoded string to internal charset
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151 *
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152 * @param string $input Header value
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153 * @param string $fallback Fallback charset if none specified
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154 *
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155 * @return string Decoded string
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156 */
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157 public static function decode_mime_string($input, $fallback = null)
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158 {
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159 $default_charset = $fallback ?: self::get_charset();
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160
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161 // rfc: all line breaks or other characters not found
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162 // in the Base64 Alphabet must be ignored by decoding software
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163 // delete all blanks between MIME-lines, differently we can
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164 // receive unnecessary blanks and broken utf-8 symbols
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165 $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
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166
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167 // encoded-word regexp
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168 $re = '/=\?([^?]+)\?([BbQq])\?([^\n]*?)\?=/';
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169
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170 // Find all RFC2047's encoded words
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171 if (preg_match_all($re, $input, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
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172 // Initialize variables
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173 $tmp = array();
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174 $out = '';
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175 $start = 0;
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176
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177 foreach ($matches as $idx => $m) {
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178 $pos = $m[0][1];
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179 $charset = $m[1][0];
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180 $encoding = $m[2][0];
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181 $text = $m[3][0];
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182 $length = strlen($m[0][0]);
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183
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184 // Append everything that is before the text to be decoded
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185 if ($start != $pos) {
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186 $substr = substr($input, $start, $pos-$start);
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187 $out .= rcube_charset::convert($substr, $default_charset);
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188 $start = $pos;
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189 }
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190 $start += $length;
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191
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192 // Per RFC2047, each string part "MUST represent an integral number
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193 // of characters . A multi-octet character may not be split across
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194 // adjacent encoded-words." However, some mailers break this, so we
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195 // try to handle characters spanned across parts anyway by iterating
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196 // through and aggregating sequential encoded parts with the same
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197 // character set and encoding, then perform the decoding on the
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198 // aggregation as a whole.
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199
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200 $tmp[] = $text;
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201 if ($next_match = $matches[$idx+1]) {
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202 if ($next_match[0][1] == $start
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203 && $next_match[1][0] == $charset
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204 && $next_match[2][0] == $encoding
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205 ) {
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206 continue;
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207 }
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208 }
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209
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210 $count = count($tmp);
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211 $text = '';
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212
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213 // Decode and join encoded-word's chunks
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214 if ($encoding == 'B' || $encoding == 'b') {
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215 // base64 must be decoded a segment at a time
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216 for ($i=0; $i<$count; $i++)
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217 $text .= base64_decode($tmp[$i]);
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218 }
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219 else { //if ($encoding == 'Q' || $encoding == 'q') {
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220 // quoted printable can be combined and processed at once
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221 for ($i=0; $i<$count; $i++)
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222 $text .= $tmp[$i];
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223
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224 $text = str_replace('_', ' ', $text);
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225 $text = quoted_printable_decode($text);
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226 }
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227
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228 $out .= rcube_charset::convert($text, $charset);
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229 $tmp = array();
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230 }
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231
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232 // add the last part of the input string
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233 if ($start != strlen($input)) {
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234 $out .= rcube_charset::convert(substr($input, $start), $default_charset);
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235 }
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236
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237 // return the results
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238 return $out;
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239 }
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240
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241 // no encoding information, use fallback
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242 return rcube_charset::convert($input, $default_charset);
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243 }
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244
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245 /**
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246 * Decode a mime part
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247 *
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248 * @param string $input Input string
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249 * @param string $encoding Part encoding
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250 *
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251 * @return string Decoded string
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252 */
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253 public static function decode($input, $encoding = '7bit')
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254 {
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255 switch (strtolower($encoding)) {
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256 case 'quoted-printable':
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257 return quoted_printable_decode($input);
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258 case 'base64':
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259 return base64_decode($input);
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260 case 'x-uuencode':
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261 case 'x-uue':
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262 case 'uue':
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263 case 'uuencode':
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264 return convert_uudecode($input);
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265 case '7bit':
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266 default:
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267 return $input;
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268 }
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269 }
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270
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271 /**
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272 * Split RFC822 header string into an associative array
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273 */
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274 public static function parse_headers($headers)
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275 {
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276 $a_headers = array();
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277 $headers = preg_replace('/\r?\n(\t| )+/', ' ', $headers);
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278 $lines = explode("\n", $headers);
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279 $count = count($lines);
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280
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281 for ($i=0; $i<$count; $i++) {
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282 if ($p = strpos($lines[$i], ': ')) {
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283 $field = strtolower(substr($lines[$i], 0, $p));
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284 $value = trim(substr($lines[$i], $p+1));
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285 if (!empty($value)) {
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286 $a_headers[$field] = $value;
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287 }
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288 }
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289 }
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290
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291 return $a_headers;
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292 }
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293
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294 /**
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295 * E-mail address list parser
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296 */
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297 private static function parse_address_list($str, $decode = true, $fallback = null)
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298 {
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299 // remove any newlines and carriage returns before
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300 $str = preg_replace('/\r?\n(\s|\t)?/', ' ', $str);
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301
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302 // extract list items, remove comments
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303 $str = self::explode_header_string(',;', $str, true);
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304 $result = array();
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305
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306 // simplified regexp, supporting quoted local part
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307 $email_rx = '(\S+|("\s*(?:[^"\f\n\r\t\v\b\s]+\s*)+"))@\S+';
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308
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309 foreach ($str as $key => $val) {
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310 $name = '';
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311 $address = '';
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312 $val = trim($val);
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313
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314 if (preg_match('/(.*)<('.$email_rx.')>$/', $val, $m)) {
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315 $address = $m[2];
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316 $name = trim($m[1]);
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317 }
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318 else if (preg_match('/^('.$email_rx.')$/', $val, $m)) {
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319 $address = $m[1];
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320 $name = '';
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321 }
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322 // special case (#1489092)
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323 else if (preg_match('/(\s*<MAILER-DAEMON>)$/', $val, $m)) {
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324 $address = 'MAILER-DAEMON';
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325 $name = substr($val, 0, -strlen($m[1]));
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326 }
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327 else if (preg_match('/('.$email_rx.')/', $val, $m)) {
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328 $name = $m[1];
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329 }
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330 else {
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331 $name = $val;
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332 }
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333
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334 // dequote and/or decode name
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335 if ($name) {
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336 if ($name[0] == '"' && $name[strlen($name)-1] == '"') {
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337 $name = substr($name, 1, -1);
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338 $name = stripslashes($name);
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339 }
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340 if ($decode) {
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341 $name = self::decode_header($name, $fallback);
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342 // some clients encode addressee name with quotes around it
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343 if ($name[0] == '"' && $name[strlen($name)-1] == '"') {
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344 $name = substr($name, 1, -1);
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345 }
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346 }
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347 }
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348
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349 if (!$address && $name) {
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350 $address = $name;
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351 $name = '';
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352 }
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353
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354 if ($address) {
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355 $address = self::fix_email($address);
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356 $result[$key] = array('name' => $name, 'address' => $address);
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357 }
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358 }
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359
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360 return $result;
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361 }
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362
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363 /**
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364 * Explodes header (e.g. address-list) string into array of strings
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365 * using specified separator characters with proper handling
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366 * of quoted-strings and comments (RFC2822)
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367 *
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368 * @param string $separator String containing separator characters
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369 * @param string $str Header string
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370 * @param bool $remove_comments Enable to remove comments
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371 *
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372 * @return array Header items
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373 */
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374 public static function explode_header_string($separator, $str, $remove_comments = false)
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375 {
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376 $length = strlen($str);
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377 $result = array();
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378 $quoted = false;
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379 $comment = 0;
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380 $out = '';
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381
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382 for ($i=0; $i<$length; $i++) {
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383 // we're inside a quoted string
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384 if ($quoted) {
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385 if ($str[$i] == '"') {
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386 $quoted = false;
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387 }
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388 else if ($str[$i] == "\\") {
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389 if ($comment <= 0) {
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390 $out .= "\\";
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391 }
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392 $i++;
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393 }
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394 }
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395 // we are inside a comment string
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396 else if ($comment > 0) {
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397 if ($str[$i] == ')') {
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398 $comment--;
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399 }
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400 else if ($str[$i] == '(') {
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401 $comment++;
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402 }
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403 else if ($str[$i] == "\\") {
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404 $i++;
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405 }
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406 continue;
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407 }
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408 // separator, add to result array
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409 else if (strpos($separator, $str[$i]) !== false) {
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410 if ($out) {
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411 $result[] = $out;
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412 }
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413 $out = '';
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414 continue;
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415 }
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416 // start of quoted string
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417 else if ($str[$i] == '"') {
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418 $quoted = true;
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419 }
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420 // start of comment
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421 else if ($remove_comments && $str[$i] == '(') {
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422 $comment++;
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423 }
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424
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425 if ($comment <= 0) {
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426 $out .= $str[$i];
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427 }
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428 }
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429
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430 if ($out && $comment <= 0) {
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431 $result[] = $out;
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432 }
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433
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434 return $result;
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435 }
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436
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|
|
437 /**
|
|
|
438 * Interpret a format=flowed message body according to RFC 2646
|
|
|
439 *
|
|
|
440 * @param string $text Raw body formatted as flowed text
|
|
|
441 * @param string $mark Mark each flowed line with specified character
|
|
|
442 * @param boolean $delsp Remove the trailing space of each flowed line
|
|
|
443 *
|
|
|
444 * @return string Interpreted text with unwrapped lines and stuffed space removed
|
|
|
445 */
|
|
|
446 public static function unfold_flowed($text, $mark = null, $delsp = false)
|
|
|
447 {
|
|
|
448 $text = preg_split('/\r?\n/', $text);
|
|
|
449 $last = -1;
|
|
|
450 $q_level = 0;
|
|
|
451 $marks = array();
|
|
|
452
|
|
|
453 foreach ($text as $idx => $line) {
|
|
|
454 if ($q = strspn($line, '>')) {
|
|
|
455 // remove quote chars
|
|
|
456 $line = substr($line, $q);
|
|
|
457 // remove (optional) space-staffing
|
|
|
458 if ($line[0] === ' ') $line = substr($line, 1);
|
|
|
459
|
|
|
460 // The same paragraph (We join current line with the previous one) when:
|
|
|
461 // - the same level of quoting
|
|
|
462 // - previous line was flowed
|
|
|
463 // - previous line contains more than only one single space (and quote char(s))
|
|
|
464 if ($q == $q_level
|
|
|
465 && isset($text[$last]) && $text[$last][strlen($text[$last])-1] == ' '
|
|
|
466 && !preg_match('/^>+ {0,1}$/', $text[$last])
|
|
|
467 ) {
|
|
|
468 if ($delsp) {
|
|
|
469 $text[$last] = substr($text[$last], 0, -1);
|
|
|
470 }
|
|
|
471 $text[$last] .= $line;
|
|
|
472 unset($text[$idx]);
|
|
|
473
|
|
|
474 if ($mark) {
|
|
|
475 $marks[$last] = true;
|
|
|
476 }
|
|
|
477 }
|
|
|
478 else {
|
|
|
479 $last = $idx;
|
|
|
480 }
|
|
|
481 }
|
|
|
482 else {
|
|
|
483 if ($line == '-- ') {
|
|
|
484 $last = $idx;
|
|
|
485 }
|
|
|
486 else {
|
|
|
487 // remove space-stuffing
|
|
|
488 if ($line[0] === ' ') $line = substr($line, 1);
|
|
|
489
|
|
|
490 if (isset($text[$last]) && $line && !$q_level
|
|
|
491 && $text[$last] != '-- '
|
|
|
492 && $text[$last][strlen($text[$last])-1] == ' '
|
|
|
493 ) {
|
|
|
494 if ($delsp) {
|
|
|
495 $text[$last] = substr($text[$last], 0, -1);
|
|
|
496 }
|
|
|
497 $text[$last] .= $line;
|
|
|
498 unset($text[$idx]);
|
|
|
499
|
|
|
500 if ($mark) {
|
|
|
501 $marks[$last] = true;
|
|
|
502 }
|
|
|
503 }
|
|
|
504 else {
|
|
|
505 $text[$idx] = $line;
|
|
|
506 $last = $idx;
|
|
|
507 }
|
|
|
508 }
|
|
|
509 }
|
|
|
510 $q_level = $q;
|
|
|
511 }
|
|
|
512
|
|
|
513 if (!empty($marks)) {
|
|
|
514 foreach (array_keys($marks) as $mk) {
|
|
|
515 $text[$mk] = $mark . $text[$mk];
|
|
|
516 }
|
|
|
517 }
|
|
|
518
|
|
|
519 return implode("\r\n", $text);
|
|
|
520 }
|
|
|
521
|
|
|
522 /**
|
|
|
523 * Wrap the given text to comply with RFC 2646
|
|
|
524 *
|
|
|
525 * @param string $text Text to wrap
|
|
|
526 * @param int $length Length
|
|
|
527 * @param string $charset Character encoding of $text
|
|
|
528 *
|
|
|
529 * @return string Wrapped text
|
|
|
530 */
|
|
|
531 public static function format_flowed($text, $length = 72, $charset=null)
|
|
|
532 {
|
|
|
533 $text = preg_split('/\r?\n/', $text);
|
|
|
534
|
|
|
535 foreach ($text as $idx => $line) {
|
|
|
536 if ($line != '-- ') {
|
|
|
537 if ($level = strspn($line, '>')) {
|
|
|
538 // remove quote chars
|
|
|
539 $line = substr($line, $level);
|
|
|
540 // remove (optional) space-staffing and spaces before the line end
|
|
|
541 $line = rtrim($line, ' ');
|
|
|
542 if ($line[0] === ' ') $line = substr($line, 1);
|
|
|
543
|
|
|
544 $prefix = str_repeat('>', $level) . ' ';
|
|
|
545 $line = $prefix . self::wordwrap($line, $length - $level - 2, " \r\n$prefix", false, $charset);
|
|
|
546 }
|
|
|
547 else if ($line) {
|
|
|
548 $line = self::wordwrap(rtrim($line), $length - 2, " \r\n", false, $charset);
|
|
|
549 // space-stuffing
|
|
|
550 $line = preg_replace('/(^|\r\n)(From| |>)/', '\\1 \\2', $line);
|
|
|
551 }
|
|
|
552
|
|
|
553 $text[$idx] = $line;
|
|
|
554 }
|
|
|
555 }
|
|
|
556
|
|
|
557 return implode("\r\n", $text);
|
|
|
558 }
|
|
|
559
|
|
|
560 /**
|
|
|
561 * Improved wordwrap function with multibyte support.
|
|
|
562 * The code is based on Zend_Text_MultiByte::wordWrap().
|
|
|
563 *
|
|
|
564 * @param string $string Text to wrap
|
|
|
565 * @param int $width Line width
|
|
|
566 * @param string $break Line separator
|
|
|
567 * @param bool $cut Enable to cut word
|
|
|
568 * @param string $charset Charset of $string
|
|
|
569 * @param bool $wrap_quoted When enabled quoted lines will not be wrapped
|
|
|
570 *
|
|
|
571 * @return string Text
|
|
|
572 */
|
|
|
573 public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null, $wrap_quoted=true)
|
|
|
574 {
|
|
|
575 // Note: Never try to use iconv instead of mbstring functions here
|
|
|
576 // Iconv's substr/strlen are 100x slower (#1489113)
|
|
|
577
|
|
|
578 if ($charset && $charset != RCUBE_CHARSET) {
|
|
|
579 mb_internal_encoding($charset);
|
|
|
580 }
|
|
|
581
|
|
|
582 // Convert \r\n to \n, this is our line-separator
|
|
|
583 $string = str_replace("\r\n", "\n", $string);
|
|
|
584 $separator = "\n"; // must be 1 character length
|
|
|
585 $result = array();
|
|
|
586
|
|
|
587 while (($stringLength = mb_strlen($string)) > 0) {
|
|
|
588 $breakPos = mb_strpos($string, $separator, 0);
|
|
|
589
|
|
|
590 // quoted line (do not wrap)
|
|
|
591 if ($wrap_quoted && $string[0] == '>') {
|
|
|
592 if ($breakPos === $stringLength - 1 || $breakPos === false) {
|
|
|
593 $subString = $string;
|
|
|
594 $cutLength = null;
|
|
|
595 }
|
|
|
596 else {
|
|
|
597 $subString = mb_substr($string, 0, $breakPos);
|
|
|
598 $cutLength = $breakPos + 1;
|
|
|
599 }
|
|
|
600 }
|
|
|
601 // next line found and current line is shorter than the limit
|
|
|
602 else if ($breakPos !== false && $breakPos < $width) {
|
|
|
603 if ($breakPos === $stringLength - 1) {
|
|
|
604 $subString = $string;
|
|
|
605 $cutLength = null;
|
|
|
606 }
|
|
|
607 else {
|
|
|
608 $subString = mb_substr($string, 0, $breakPos);
|
|
|
609 $cutLength = $breakPos + 1;
|
|
|
610 }
|
|
|
611 }
|
|
|
612 else {
|
|
|
613 $subString = mb_substr($string, 0, $width);
|
|
|
614
|
|
|
615 // last line
|
|
|
616 if ($breakPos === false && $subString === $string) {
|
|
|
617 $cutLength = null;
|
|
|
618 }
|
|
|
619 else {
|
|
|
620 $nextChar = mb_substr($string, $width, 1);
|
|
|
621
|
|
|
622 if ($nextChar === ' ' || $nextChar === $separator) {
|
|
|
623 $afterNextChar = mb_substr($string, $width + 1, 1);
|
|
|
624
|
|
|
625 // Note: mb_substr() does never return False
|
|
|
626 if ($afterNextChar === false || $afterNextChar === '') {
|
|
|
627 $subString .= $nextChar;
|
|
|
628 }
|
|
|
629
|
|
|
630 $cutLength = mb_strlen($subString) + 1;
|
|
|
631 }
|
|
|
632 else {
|
|
|
633 $spacePos = mb_strrpos($subString, ' ', 0);
|
|
|
634
|
|
|
635 if ($spacePos !== false) {
|
|
|
636 $subString = mb_substr($subString, 0, $spacePos);
|
|
|
637 $cutLength = $spacePos + 1;
|
|
|
638 }
|
|
|
639 else if ($cut === false) {
|
|
|
640 $spacePos = mb_strpos($string, ' ', 0);
|
|
|
641
|
|
|
642 if ($spacePos !== false && ($breakPos === false || $spacePos < $breakPos)) {
|
|
|
643 $subString = mb_substr($string, 0, $spacePos);
|
|
|
644 $cutLength = $spacePos + 1;
|
|
|
645 }
|
|
|
646 else if ($breakPos === false) {
|
|
|
647 $subString = $string;
|
|
|
648 $cutLength = null;
|
|
|
649 }
|
|
|
650 else {
|
|
|
651 $subString = mb_substr($string, 0, $breakPos);
|
|
|
652 $cutLength = $breakPos + 1;
|
|
|
653 }
|
|
|
654 }
|
|
|
655 else {
|
|
|
656 $cutLength = $width;
|
|
|
657 }
|
|
|
658 }
|
|
|
659 }
|
|
|
660 }
|
|
|
661
|
|
|
662 $result[] = $subString;
|
|
|
663
|
|
|
664 if ($cutLength !== null) {
|
|
|
665 $string = mb_substr($string, $cutLength, ($stringLength - $cutLength));
|
|
|
666 }
|
|
|
667 else {
|
|
|
668 break;
|
|
|
669 }
|
|
|
670 }
|
|
|
671
|
|
|
672 if ($charset && $charset != RCUBE_CHARSET) {
|
|
|
673 mb_internal_encoding(RCUBE_CHARSET);
|
|
|
674 }
|
|
|
675
|
|
|
676 return implode($break, $result);
|
|
|
677 }
|
|
|
678
|
|
|
679 /**
|
|
|
680 * A method to guess the mime_type of an attachment.
|
|
|
681 *
|
|
|
682 * @param string $path Path to the file or file contents
|
|
|
683 * @param string $name File name (with suffix)
|
|
|
684 * @param string $failover Mime type supplied for failover
|
|
|
685 * @param boolean $is_stream Set to True if $path contains file contents
|
|
|
686 * @param boolean $skip_suffix Set to True if the config/mimetypes.php mappig should be ignored
|
|
|
687 *
|
|
|
688 * @return string
|
|
|
689 * @author Till Klampaeckel <till@php.net>
|
|
|
690 * @see http://de2.php.net/manual/en/ref.fileinfo.php
|
|
|
691 * @see http://de2.php.net/mime_content_type
|
|
|
692 */
|
|
|
693 public static function file_content_type($path, $name, $failover = 'application/octet-stream', $is_stream = false, $skip_suffix = false)
|
|
|
694 {
|
|
|
695 static $mime_ext = array();
|
|
|
696
|
|
|
697 $mime_type = null;
|
|
|
698 $config = rcube::get_instance()->config;
|
|
|
699 $mime_magic = $config->get('mime_magic');
|
|
|
700
|
|
|
701 if (!$skip_suffix && empty($mime_ext)) {
|
|
|
702 foreach ($config->resolve_paths('mimetypes.php') as $fpath) {
|
|
|
703 $mime_ext = array_merge($mime_ext, (array) @include($fpath));
|
|
|
704 }
|
|
|
705 }
|
|
|
706
|
|
|
707 // use file name suffix with hard-coded mime-type map
|
|
|
708 if (!$skip_suffix && is_array($mime_ext) && $name) {
|
|
|
709 if ($suffix = substr($name, strrpos($name, '.')+1)) {
|
|
|
710 $mime_type = $mime_ext[strtolower($suffix)];
|
|
|
711 }
|
|
|
712 }
|
|
|
713
|
|
|
714 // try fileinfo extension if available
|
|
|
715 if (!$mime_type && function_exists('finfo_open')) {
|
|
|
716 // null as a 2nd argument should be the same as no argument
|
|
|
717 // this however is not true on all systems/versions
|
|
|
718 if ($mime_magic) {
|
|
|
719 $finfo = finfo_open(FILEINFO_MIME, $mime_magic);
|
|
|
720 }
|
|
|
721 else {
|
|
|
722 $finfo = finfo_open(FILEINFO_MIME);
|
|
|
723 }
|
|
|
724
|
|
|
725 if ($finfo) {
|
|
|
726 if ($is_stream)
|
|
|
727 $mime_type = finfo_buffer($finfo, $path);
|
|
|
728 else
|
|
|
729 $mime_type = finfo_file($finfo, $path);
|
|
|
730 finfo_close($finfo);
|
|
|
731 }
|
|
|
732 }
|
|
|
733
|
|
|
734 // try PHP's mime_content_type
|
|
|
735 if (!$mime_type && !$is_stream && function_exists('mime_content_type')) {
|
|
|
736 $mime_type = @mime_content_type($path);
|
|
|
737 }
|
|
|
738
|
|
|
739 // fall back to user-submitted string
|
|
|
740 if (!$mime_type) {
|
|
|
741 $mime_type = $failover;
|
|
|
742 }
|
|
|
743 else {
|
|
|
744 // Sometimes (PHP-5.3?) content-type contains charset definition,
|
|
|
745 // Remove it (#1487122) also "charset=binary" is useless
|
|
|
746 $mime_type = array_shift(preg_split('/[; ]/', $mime_type));
|
|
|
747 }
|
|
|
748
|
|
|
749 return $mime_type;
|
|
|
750 }
|
|
|
751
|
|
|
752 /**
|
|
|
753 * Get mimetype => file extension mapping
|
|
|
754 *
|
|
|
755 * @param string Mime-Type to get extensions for
|
|
|
756 *
|
|
|
757 * @return array List of extensions matching the given mimetype or a hash array
|
|
|
758 * with ext -> mimetype mappings if $mimetype is not given
|
|
|
759 */
|
|
|
760 public static function get_mime_extensions($mimetype = null)
|
|
|
761 {
|
|
|
762 static $mime_types, $mime_extensions;
|
|
|
763
|
|
|
764 // return cached data
|
|
|
765 if (is_array($mime_types)) {
|
|
|
766 return $mimetype ? $mime_types[$mimetype] : $mime_extensions;
|
|
|
767 }
|
|
|
768
|
|
|
769 // load mapping file
|
|
|
770 $file_paths = array();
|
|
|
771
|
|
|
772 if ($mime_types = rcube::get_instance()->config->get('mime_types')) {
|
|
|
773 $file_paths[] = $mime_types;
|
|
|
774 }
|
|
|
775
|
|
|
776 // try common locations
|
|
|
777 if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
|
|
|
778 $file_paths[] = 'C:/xampp/apache/conf/mime.types.';
|
|
|
779 }
|
|
|
780 else {
|
|
|
781 $file_paths[] = '/etc/mime.types';
|
|
|
782 $file_paths[] = '/etc/httpd/mime.types';
|
|
|
783 $file_paths[] = '/etc/httpd2/mime.types';
|
|
|
784 $file_paths[] = '/etc/apache/mime.types';
|
|
|
785 $file_paths[] = '/etc/apache2/mime.types';
|
|
|
786 $file_paths[] = '/etc/nginx/mime.types';
|
|
|
787 $file_paths[] = '/usr/local/etc/httpd/conf/mime.types';
|
|
|
788 $file_paths[] = '/usr/local/etc/apache/conf/mime.types';
|
|
|
789 $file_paths[] = '/usr/local/etc/apache24/mime.types';
|
|
|
790 }
|
|
|
791
|
|
|
792 foreach ($file_paths as $fp) {
|
|
|
793 if (@is_readable($fp)) {
|
|
|
794 $lines = file($fp, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
|
|
|
795 break;
|
|
|
796 }
|
|
|
797 }
|
|
|
798
|
|
|
799 $mime_types = $mime_extensions = array();
|
|
|
800 $regex = "/([\w\+\-\.\/]+)\s+([\w\s]+)/i";
|
|
|
801 foreach ((array)$lines as $line) {
|
|
|
802 // skip comments or mime types w/o any extensions
|
|
|
803 if ($line[0] == '#' || !preg_match($regex, $line, $matches))
|
|
|
804 continue;
|
|
|
805
|
|
|
806 $mime = $matches[1];
|
|
|
807 foreach (explode(' ', $matches[2]) as $ext) {
|
|
|
808 $ext = trim($ext);
|
|
|
809 $mime_types[$mime][] = $ext;
|
|
|
810 $mime_extensions[$ext] = $mime;
|
|
|
811 }
|
|
|
812 }
|
|
|
813
|
|
|
814 // fallback to some well-known types most important for daily emails
|
|
|
815 if (empty($mime_types)) {
|
|
|
816 foreach (rcube::get_instance()->config->resolve_paths('mimetypes.php') as $fpath) {
|
|
|
817 $mime_extensions = array_merge($mime_extensions, (array) @include($fpath));
|
|
|
818 }
|
|
|
819
|
|
|
820 foreach ($mime_extensions as $ext => $mime) {
|
|
|
821 $mime_types[$mime][] = $ext;
|
|
|
822 }
|
|
|
823 }
|
|
|
824
|
|
|
825 // Add some known aliases that aren't included by some mime.types (#1488891)
|
|
|
826 // the order is important here so standard extensions have higher prio
|
|
|
827 $aliases = array(
|
|
|
828 'image/gif' => array('gif'),
|
|
|
829 'image/png' => array('png'),
|
|
|
830 'image/x-png' => array('png'),
|
|
|
831 'image/jpeg' => array('jpg', 'jpeg', 'jpe'),
|
|
|
832 'image/jpg' => array('jpg', 'jpeg', 'jpe'),
|
|
|
833 'image/pjpeg' => array('jpg', 'jpeg', 'jpe'),
|
|
|
834 'image/tiff' => array('tif'),
|
|
|
835 'message/rfc822' => array('eml'),
|
|
|
836 'text/x-mail' => array('eml'),
|
|
|
837 );
|
|
|
838
|
|
|
839 foreach ($aliases as $mime => $exts) {
|
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840 $mime_types[$mime] = array_unique(array_merge((array) $mime_types[$mime], $exts));
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841
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842 foreach ($exts as $ext) {
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843 if (!isset($mime_extensions[$ext])) {
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|
|
844 $mime_extensions[$ext] = $mime;
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845 }
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846 }
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847 }
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848
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849 return $mimetype ? $mime_types[$mimetype] : $mime_extensions;
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850 }
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851
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|
852 /**
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853 * Detect image type of the given binary data by checking magic numbers.
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|
854 *
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|
855 * @param string $data Binary file content
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856 *
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|
857 * @return string Detected mime-type or jpeg as fallback
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|
|
858 */
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|
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859 public static function image_content_type($data)
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|
|
860 {
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|
|
861 $type = 'jpeg';
|
|
|
862 if (preg_match('/^\x89\x50\x4E\x47/', $data)) $type = 'png';
|
|
|
863 else if (preg_match('/^\x47\x49\x46\x38/', $data)) $type = 'gif';
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|
|
864 else if (preg_match('/^\x00\x00\x01\x00/', $data)) $type = 'ico';
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|
|
865 // else if (preg_match('/^\xFF\xD8\xFF\xE0/', $data)) $type = 'jpeg';
|
|
|
866
|
|
|
867 return 'image/' . $type;
|
|
|
868 }
|
|
|
869
|
|
|
870 /**
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|
|
871 * Try to fix invalid email addresses
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|
|
872 */
|
|
|
873 public static function fix_email($email)
|
|
|
874 {
|
|
|
875 $parts = rcube_utils::explode_quoted_string('@', $email);
|
|
|
876 foreach ($parts as $idx => $part) {
|
|
|
877 // remove redundant quoting (#1490040)
|
|
|
878 if ($part[0] == '"' && preg_match('/^"([a-zA-Z0-9._+=-]+)"$/', $part, $m)) {
|
|
|
879 $parts[$idx] = $m[1];
|
|
|
880 }
|
|
|
881 }
|
|
|
882
|
|
|
883 return implode('@', $parts);
|
|
|
884 }
|
|
|
885 }
|
