| commit | author | age | ||
| 70318e | 1 | <?php |
| A | 2 | |
| 3 | ||
| 4 | /* | |
| 5 | +-----------------------------------------------------------------------+ | |
| 6 | | program/include/rcube_mime_struct.php | | |
| 7 | | | | |
| e019f2 | 8 | | This file is part of the Roundcube Webmail client | |
| A | 9 | | Copyright (C) 2005-2010, Roundcube Dev. - Switzerland | |
| 70318e | 10 | | Licensed under the GNU GPL | |
| A | 11 | | | |
| 12 | | PURPOSE: | | |
| 13 | | Provide functions for handling mime messages structure | | |
| 14 | | | | |
| 15 | | Based on Iloha MIME Library. See http://ilohamail.org/ for details | | |
| 16 | | | | |
| 17 | +-----------------------------------------------------------------------+ | |
| 18 | | Author: Aleksander Machniak <alec@alec.pl> | | |
| 19 | | Author: Ryo Chijiiwa <Ryo@IlohaMail.org> | | |
| 20 | +-----------------------------------------------------------------------+ | |
| 21 | ||
| 22 | $Id$ | |
| 23 | ||
| 24 | */ | |
| 25 | ||
| d062db | 26 | /** |
| T | 27 | * Helper class to process IMAP's BODYSTRUCTURE string |
| 28 | * | |
| 29 | * @package Mail | |
| 30 | * @author Aleksander Machniak <alec@alec.pl> | |
| 31 | */ | |
| 70318e | 32 | class rcube_mime_struct |
| A | 33 | { |
| 34 | private $structure; | |
| 35 | ||
| 36 | ||
| 37 | function __construct($str=null) | |
| 38 | { | |
| 39 | if ($str) | |
| 40 | $this->structure = $this->parseStructure($str); | |
| 41 | } | |
| 42 | ||
| 43 | /* | |
| 44 | * Parses IMAP's BODYSTRUCTURE string into array | |
| 45 | */ | |
| 46 | function parseStructure($str) | |
| 47 | { | |
| 48 | $line = substr($str, 1, strlen($str) - 2); | |
| 49 | $line = str_replace(')(', ') (', $line); | |
| 50 | ||
| 51 | $struct = self::parseBSString($line); | |
| 52 | if (!is_array($struct[0]) && (strcasecmp($struct[0], 'message') == 0) | |
| 53 | && (strcasecmp($struct[1], 'rfc822') == 0)) { | |
| 54 | $struct = array($struct); | |
| 55 | } | |
| 56 | ||
| 57 | return $struct; | |
| 58 | } | |
| 59 | ||
| 60 | /* | |
| 61 | * Parses IMAP's BODYSTRUCTURE string into array and loads it into class internal variable | |
| 62 | */ | |
| 63 | function loadStructure($str) | |
| 64 | { | |
| 65 | if (empty($str)) | |
| 66 | return true; | |
| 67 | ||
| 68 | $this->structure = $this->parseStructure($str); | |
| 69 | return (!empty($this->structure)); | |
| 70 | } | |
| 71 | ||
| 72 | function getPartType($part) | |
| 73 | { | |
| 74 | $part_a = $this->getPartArray($this->structure, $part); | |
| 75 | if (!empty($part_a)) { | |
| 76 | if (is_array($part_a[0])) | |
| 77 | return 'multipart'; | |
| 78 | else if ($part_a[0]) | |
| 79 | return $part_a[0]; | |
| 80 | } | |
| 81 | ||
| 82 | return 'other'; | |
| 83 | } | |
| 84 | ||
| 85 | function getPartEncoding($part) | |
| 86 | { | |
| 87 | $part_a = $this->getPartArray($this->structure, $part); | |
| 88 | if ($part_a) { | |
| 89 | if (!is_array($part_a[0])) | |
| 90 | return $part_a[5]; | |
| 91 | } | |
| 92 | ||
| 93 | return ''; | |
| 94 | } | |
| 95 | ||
| 96 | function getPartCharset($part) | |
| 97 | { | |
| 98 | $part_a = $this->getPartArray($this->structure, $part); | |
| 99 | if ($part_a) { | |
| 100 | if (is_array($part_a[0])) | |
| 101 | return ''; | |
| 102 | else { | |
| 103 | if (is_array($part_a[2])) { | |
| 104 | $name = ''; | |
| 105 | while (list($key, $val) = each($part_a[2])) | |
| 106 | if (strcasecmp($val, 'charset') == 0) | |
| 107 | return $part_a[2][$key+1]; | |
| 108 | } | |
| 109 | } | |
| 110 | } | |
| 111 | ||
| 112 | return ''; | |
| 113 | } | |
| 114 | ||
| 115 | function getPartArray($a, $part) | |
| 116 | { | |
| 117 | if (!is_array($a)) { | |
| 118 | return false; | |
| 119 | } | |
| 120 | if (strpos($part, '.') > 0) { | |
| 121 | $original_part = $part; | |
| 122 | $pos = strpos($part, '.'); | |
| 123 | $rest = substr($original_part, $pos+1); | |
| 124 | $part = substr($original_part, 0, $pos); | |
| 125 | if ((strcasecmp($a[0], 'message') == 0) && (strcasecmp($a[1], 'rfc822') == 0)) { | |
| 126 | $a = $a[8]; | |
| 127 | } | |
| 128 | return self::getPartArray($a[$part-1], $rest); | |
| 129 | } | |
| 130 | else if ($part>0) { | |
| 131 | if (!is_array($a[0]) && (strcasecmp($a[0], 'message') == 0) | |
| 132 | && (strcasecmp($a[1], 'rfc822') == 0)) { | |
| 133 | $a = $a[8]; | |
| 134 | } | |
| 135 | if (is_array($a[$part-1])) | |
| 136 | return $a[$part-1]; | |
| 137 | else | |
| 138 | return $a; | |
| 139 | } | |
| 140 | else if (($part==0) || (empty($part))) { | |
| 141 | return $a; | |
| 142 | } | |
| 143 | } | |
| 144 | ||
| 145 | private function closingParenPos($str, $start) | |
| 146 | { | |
| 147 | $level = 0; | |
| 148 | $len = strlen($str); | |
| 149 | $in_quote = 0; | |
| 150 | ||
| 151 | for ($i=$start; $i<$len; $i++) { | |
| 152 | if ($str[$i] == '"' && $str[$i-1] != "\\") { | |
| 153 | $in_quote = ($in_quote + 1) % 2; | |
| 154 | } | |
| 155 | if (!$in_quote) { | |
| 156 | if ($str[$i] == '(') | |
| 157 | $level++; | |
| 158 | else if (($level > 0) && ($str[$i] == ')')) | |
| 159 | $level--; | |
| 160 | else if (($level == 0) && ($str[$i] == ')')) | |
| 161 | return $i; | |
| 162 | } | |
| 163 | } | |
| 164 | } | |
| 165 | ||
| 166 | /* | |
| 167 | * Parses IMAP's BODYSTRUCTURE string into array | |
| 168 | */ | |
| 169 | private function parseBSString($str) | |
| 170 | { | |
| 171 | $id = 0; | |
| 172 | $a = array(); | |
| 173 | $len = strlen($str); | |
| 174 | $in_quote = 0; | |
| 175 | ||
| 176 | for ($i=0; $i<$len; $i++) { | |
| 177 | if ($str[$i] == '"') { | |
| 178 | $in_quote = ($in_quote + 1) % 2; | |
| 179 | } else if (!$in_quote) { | |
| 180 | // space means new element | |
| 181 | if ($str[$i] == ' ') { | |
| 182 | $id++; | |
| 183 | // skip additional spaces | |
| 184 | while ($str[$i+1] == ' ') | |
| 185 | $i++; | |
| 186 | // new part | |
| 187 | } else if ($str[$i] == '(') { | |
| 188 | $i++; | |
| 189 | $endPos = self::closingParenPos($str, $i); | |
| 190 | $partLen = $endPos - $i; | |
| 191 | if ($partLen < 0) | |
| 192 | break; | |
| 193 | $part = substr($str, $i, $partLen); | |
| 194 | $a[$id] = self::parseBSString($part); // send part string | |
| 195 | $i = $endPos; | |
| 196 | } else | |
| 197 | $a[$id] .= $str[$i]; //add to current element in array | |
| 198 | } else if ($in_quote) { | |
| 199 | if ($str[$i] == "\\") { | |
| 200 | $i++; // escape backslashes | |
| 201 | if ($str[$i] == '"' || $str[$i] == "\\") | |
| 202 | $a[$id] .= $str[$i]; | |
| 203 | } | |
| 204 | else | |
| 205 | $a[$id] .= $str[$i]; //add to current element in array | |
| 206 | } | |
| 207 | } | |
| 208 | ||
| 209 | reset($a); | |
| 210 | return $a; | |
| 211 | } | |
| 212 | ||
| 213 | ||
| 214 | } | |
