| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * mail_fetch/functions.php |
| 5 | * |
| 6 | * Functions for the mail_fetch plugin. |
| 7 | * |
| 8 | * Original code from LexZEUS <lexzeus@mifinca.com> |
| 9 | * and josh@superfork.com (extracted from php manual) |
| 10 | * Adapted for MailFetch by Philippe Mingo <mingo@rotedic.com> |
| 11 | * |
| 12 | * @copyright 1999-2009 The SquirrelMail Project Team |
| 13 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
| 14 | * @version $Id$ |
| 15 | * @package plugins |
| 16 | * @subpackage mail_fetch |
| 17 | */ |
| 18 | |
| 19 | |
| 20 | /** pop3 class */ |
| 21 | include_once (SM_PATH . 'plugins/mail_fetch/constants.php'); |
| 22 | include_once (SM_PATH . 'plugins/mail_fetch/class.mail_fetch.php'); |
| 23 | |
| 24 | /** declare plugin globals */ |
| 25 | global $mail_fetch_allow_unsubscribed; |
| 26 | |
| 27 | /** |
| 28 | * Add link to menu at top of content pane |
| 29 | * |
| 30 | * @return void |
| 31 | * |
| 32 | */ |
| 33 | function mail_fetch_link_do() { |
| 34 | |
| 35 | global $oTemplate, $nbsp; |
| 36 | $output = makeInternalLink('plugins/mail_fetch/fetch.php', _("Fetch"), '') |
| 37 | . $nbsp . $nbsp; |
| 38 | return array('menuline' => $output); |
| 39 | |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Controls use of unsubscribed folders in plugin |
| 44 | * @global boolean $mail_fetch_allow_unsubscribed |
| 45 | * @since 1.5.1 and 1.4.5 |
| 46 | */ |
| 47 | $mail_fetch_allow_unsubscribed = false; |
| 48 | |
| 49 | /** load site config */ |
| 50 | if (file_exists(SM_PATH . 'config/mail_fetch_config.php')) { |
| 51 | include_once(SM_PATH . 'config/mail_fetch_config.php'); |
| 52 | } elseif (file_exists(SM_PATH . 'plugins/mail_fetch/config.php')) { |
| 53 | include_once(SM_PATH . 'plugins/mail_fetch/config.php'); |
| 54 | } |
| 55 | |
| 56 | // hooked functions |
| 57 | |
| 58 | /** |
| 59 | * Internal function used to fetch pop3 mails on login |
| 60 | * @since 1.5.1 |
| 61 | * @private |
| 62 | */ |
| 63 | function mail_fetch_login_function() { |
| 64 | include_once (SM_PATH . 'functions/imap_general.php'); |
| 65 | |
| 66 | global $username, $data_dir, $imapServerAddress, $imapPort; |
| 67 | |
| 68 | $mailfetch_newlog = getPref($data_dir, $username, 'mailfetch_newlog'); |
| 69 | |
| 70 | $outMsg = ''; |
| 71 | |
| 72 | $mailfetch_server_number = getPref($data_dir, $username, 'mailfetch_server_number'); |
| 73 | if (!isset($mailfetch_server_number)) $mailfetch_server_number=0; |
| 74 | $mailfetch_cypher = getPref($data_dir, $username, 'mailfetch_cypher'); |
| 75 | if ($mailfetch_server_number<1) $mailfetch_server_number=0; |
| 76 | |
| 77 | for ($i_loop=0;$i_loop<$mailfetch_server_number;$i_loop++) { |
| 78 | |
| 79 | $mailfetch_login_[$i_loop] = getPref($data_dir, $username, "mailfetch_login_$i_loop"); |
| 80 | $mailfetch_fref_[$i_loop] = getPref($data_dir, $username, "mailfetch_fref_$i_loop"); |
| 81 | $mailfetch_pass_[$i_loop] = getPref($data_dir, $username, "mailfetch_pass_$i_loop"); |
| 82 | if( $mailfetch_cypher == 'on' ) { |
| 83 | $mailfetch_pass_[$i_loop] = decrypt( $mailfetch_pass_[$i_loop] ); |
| 84 | } |
| 85 | |
| 86 | if( $mailfetch_pass_[$i_loop] <> '' && // Empty passwords no allowed |
| 87 | ( ( $mailfetch_login_[$i_loop] == 'on' && $mailfetch_newlog == 'on' ) || $mailfetch_fref_[$i_loop] == 'on' ) ) { |
| 88 | |
| 89 | // What the heck |
| 90 | $mailfetch_server_[$i_loop] = getPref($data_dir, $username, "mailfetch_server_$i_loop"); |
| 91 | $mailfetch_port_[$i_loop] = getPref($data_dir, $username , "mailfetch_port_$i_loop"); |
| 92 | $mailfetch_alias_[$i_loop] = getPref($data_dir, $username, "mailfetch_alias_$i_loop"); |
| 93 | $mailfetch_user_[$i_loop] = getPref($data_dir, $username, "mailfetch_user_$i_loop"); |
| 94 | $mailfetch_lmos_[$i_loop] = getPref($data_dir, $username, "mailfetch_lmos_$i_loop"); |
| 95 | $mailfetch_uidl_[$i_loop] = getPref($data_dir, $username, "mailfetch_uidl_$i_loop"); |
| 96 | $mailfetch_subfolder_[$i_loop] = getPref($data_dir, $username, "mailfetch_subfolder_$i_loop"); |
| 97 | $mailfetch_auth_[$i_loop] = getPref($data_dir, $username, "mailfetch_auth_$i_loop",MAIL_FETCH_AUTH_USER); |
| 98 | $mailfetch_type_[$i_loop] = getPref($data_dir, $username, "mailfetch_type_$i_loop",MAIL_FETCH_USE_PLAIN); |
| 99 | |
| 100 | $mailfetch_server=$mailfetch_server_[$i_loop]; |
| 101 | $mailfetch_port=$mailfetch_port_[$i_loop]; |
| 102 | $mailfetch_user=$mailfetch_user_[$i_loop]; |
| 103 | $mailfetch_alias=$mailfetch_alias_[$i_loop]; |
| 104 | $mailfetch_pass=$mailfetch_pass_[$i_loop]; |
| 105 | $mailfetch_lmos=$mailfetch_lmos_[$i_loop]; |
| 106 | $mailfetch_login=$mailfetch_login_[$i_loop]; |
| 107 | $mailfetch_uidl=$mailfetch_uidl_[$i_loop]; |
| 108 | $mailfetch_subfolder=$mailfetch_subfolder_[$i_loop]; |
| 109 | $mailfetch_auth=$mailfetch_auth_[$i_loop]; |
| 110 | $mailfetch_type=$mailfetch_type_[$i_loop]; |
| 111 | // end of what the heck |
| 112 | |
| 113 | |
| 114 | // $outMsg .= "$mailfetch_alias checked<br />"; |
| 115 | |
| 116 | // $outMsg .= "$mailfetch_alias_[$i_loop]<br />"; |
| 117 | |
| 118 | // FIXME: duplicate code with different output destination. |
| 119 | |
| 120 | $pop3 = new mail_fetch(array('host' => $mailfetch_server, |
| 121 | 'port' => $mailfetch_port, |
| 122 | 'auth' => $mailfetch_auth, |
| 123 | 'tls' => $mailfetch_type, |
| 124 | 'timeout' => 60)); |
| 125 | |
| 126 | if (!empty($pop3->error)) { |
| 127 | $outMsg .= _("Warning:") . ' ' . $pop3->error; |
| 128 | continue; |
| 129 | } |
| 130 | |
| 131 | $imap_stream = sqimap_login($username, false, $imapServerAddress, $imapPort, 10); |
| 132 | |
| 133 | /* log into pop server*/ |
| 134 | if (! $pop3->login($mailfetch_user, $mailfetch_pass)) { |
| 135 | $outMsg .= _("Login Failed:") . ' ' . $pop3->error; |
| 136 | continue; |
| 137 | } |
| 138 | |
| 139 | $aMsgStat = $pop3->command_stat(); |
| 140 | if (is_bool($aMsgStat)) { |
| 141 | $outMsg .= _("Can't get mailbox status:") . ' ' . htmlspecialchars($pop3->error); |
| 142 | continue; |
| 143 | } |
| 144 | |
| 145 | $Count = $aMsgStat['count']; |
| 146 | |
| 147 | $i = 1; |
| 148 | |
| 149 | if ($Count>0) { |
| 150 | // If we leave messages on server, try using UIDL |
| 151 | if ($mailfetch_lmos == 'on') { |
| 152 | $msglist = $pop3->command_uidl(); |
| 153 | if (is_bool($msglist)) { |
| 154 | $outMsg .= _("Server does not support UIDL.") . ' '.htmlspecialchars($pop3->error); |
| 155 | // User asked to leave messages on server, but we can't do that. |
| 156 | $pop3->command_quit(); |
| 157 | continue; |
| 158 | // $mailfetch_lmos = 'off'; |
| 159 | } else { |
| 160 | // calculate number of new messages |
| 161 | for ($j = 1; $j <= sizeof($msglist); $j++) { |
| 162 | // do strict comparison ('1111.10' should not be equal to '1111.100') |
| 163 | if ($msglist[$j] === $mailfetch_uidl) { |
| 164 | $i = $j+1; |
| 165 | break; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | // fetch list of messages with LIST |
| 171 | // we can use else control, but we can also set $mailfetch_lmos |
| 172 | // to off if server does not support UIDL. |
| 173 | if ($mailfetch_lmos != 'on') { |
| 174 | $msglist = $pop3->command_list(); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | if ($Count < $i) { |
| 179 | $pop3->command_quit(); |
| 180 | continue; |
| 181 | } |
| 182 | if ($Count == 0) { |
| 183 | $pop3->command_quit(); |
| 184 | continue; |
| 185 | } |
| 186 | |
| 187 | for (; $i <= $Count; $i++) { |
| 188 | if (!ini_get('safe_mode')) |
| 189 | set_time_limit(20); // 20 seconds per message max |
| 190 | $Message = $pop3->command_retr($i); |
| 191 | |
| 192 | if (is_bool($Message)) { |
| 193 | $outMsg .= _("Warning:") . ' ' . htmlspecialchars($pop3->error); |
| 194 | continue; |
| 195 | } |
| 196 | |
| 197 | // check if mail folder is not null and subscribed (There is possible issue with /noselect mail folders) |
| 198 | if ($mailfetch_subfolder=='' || |
| 199 | ! mail_fetch_check_folder($imap_stream,$mailfetch_subfolder)) { |
| 200 | fputs($imap_stream, "A3$i APPEND INBOX {" . strlen($Message) . "}\r\n"); |
| 201 | } else { |
| 202 | fputs($imap_stream, "A3$i APPEND $mailfetch_subfolder {" . strlen($Message) . "}\r\n"); |
| 203 | } |
| 204 | $Line = fgets($imap_stream, 1024); |
| 205 | if (substr($Line, 0, 1) == '+') { |
| 206 | fputs($imap_stream, $Message); |
| 207 | fputs($imap_stream, "\r\n"); |
| 208 | sqimap_read_data($imap_stream, "A3$i", false, $response, $message); |
| 209 | |
| 210 | // Check results of append command |
| 211 | $response=(implode('',$response)); |
| 212 | $message=(implode('',$message)); |
| 213 | if ($response != 'OK') { |
| 214 | $outMsg .= _("Error Appending Message!")." ".htmlspecialchars($message); |
| 215 | |
| 216 | if ($mailfetch_lmos == 'on') { |
| 217 | setPref($data_dir,$username,"mailfetch_uidl_$i_loop", $msglist[$i-1]); |
| 218 | } |
| 219 | // Destroy msg list in order to prevent UIDL update |
| 220 | $msglist = false; |
| 221 | // if append fails, don't download other messages |
| 222 | break; |
| 223 | } |
| 224 | |
| 225 | if ($mailfetch_lmos != 'on') { |
| 226 | $pop3->command_dele($i); |
| 227 | } |
| 228 | } else { |
| 229 | echo "$Line"; |
| 230 | $outMsg .= _("Error Appending Message!"); |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | $pop3->command_quit(); |
| 235 | sqimap_logout($imap_stream); |
| 236 | if ($mailfetch_lmos == 'on' && is_array($msglist)) { |
| 237 | setPref($data_dir,$username,"mailfetch_uidl_$i_loop", array_pop($msglist)); |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | if( trim( $outMsg ) <> '' ) { |
| 243 | echo '<br /><font size="1">' . _("Mail Fetch Result:") . "<br />$outMsg</font>"; |
| 244 | } |
| 245 | if( $mailfetch_newlog == 'on' ) { |
| 246 | setPref($data_dir, $username, 'mailfetch_newlog', 'off'); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Internal function used to detect new logins |
| 252 | */ |
| 253 | function mail_fetch_setnew_function() { |
| 254 | global $data_dir, $username; |
| 255 | |
| 256 | setPref( $data_dir, $username, 'mailfetch_newlog', 'on' ); |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Internal function used to register option block |
| 261 | * @since 1.5.1 |
| 262 | * @private |
| 263 | */ |
| 264 | function mailfetch_optpage_register_block_function() { |
| 265 | global $optpage_blocks; |
| 266 | |
| 267 | $optpage_blocks[] = array( |
| 268 | 'name' => _("POP3 Fetch Mail"), |
| 269 | 'url' => '../plugins/mail_fetch/options.php', |
| 270 | 'desc' => _("This configures settings for downloading email from a POP3 mailbox to your account on this server."), |
| 271 | 'js' => false |
| 272 | ); |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * Internal function used to update mail_fetch settings |
| 277 | * when folders are renamed or deleted. |
| 278 | * @since 1.5.1 |
| 279 | * @private |
| 280 | */ |
| 281 | function mail_fetch_folderact_function($args) { |
| 282 | global $username, $data_dir; |
| 283 | |
| 284 | if (empty($args) || !is_array($args)) { |
| 285 | return; |
| 286 | } |
| 287 | |
| 288 | /* Should be 3 ars, 1: old folder, 2: action, 3: new folder */ |
| 289 | if (count($args) != 3) { |
| 290 | return; |
| 291 | } |
| 292 | |
| 293 | list($old_folder, $action, $new_folder) = $args; |
| 294 | |
| 295 | $mailfetch_server_number = getPref($data_dir, $username, 'mailfetch_server_number'); |
| 296 | |
| 297 | for ($i = 0; $i < $mailfetch_server_number; $i++) { |
| 298 | $mailfetch_subfolder = getPref($data_dir, $username, 'mailfetch_subfolder_' . $i); |
| 299 | |
| 300 | if ($mailfetch_subfolder != $old_folder) { |
| 301 | continue; |
| 302 | } |
| 303 | |
| 304 | if ($action == 'delete') { |
| 305 | setPref($data_dir, $username, 'mailfetch_subfolder_' . $i, 'INBOX'); |
| 306 | } elseif ($action == 'rename') { |
| 307 | setPref($data_dir, $username, 'mailfetch_subfolder_' . $i, $new_folder); |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | // end of hooked functions |
| 312 | |
| 313 | /** |
| 314 | * hex2bin - document me |
| 315 | */ |
| 316 | function hex2bin( $data ) { |
| 317 | |
| 318 | /* Original code by josh@superfork.com */ |
| 319 | |
| 320 | $len = strlen($data); |
| 321 | $newdata = ''; |
| 322 | for( $i=0; $i < $len; $i += 2 ) { |
| 323 | $newdata .= pack( "C", hexdec( substr( $data, $i, 2) ) ); |
| 324 | } |
| 325 | return $newdata; |
| 326 | } |
| 327 | |
| 328 | function mf_keyED( $txt ) { |
| 329 | |
| 330 | global $MF_TIT; |
| 331 | |
| 332 | if( !isset( $MF_TIT ) ) { |
| 333 | $MF_TIT = "MailFetch Secure for SquirrelMail 1.x"; |
| 334 | } |
| 335 | |
| 336 | $encrypt_key = md5( $MF_TIT ); |
| 337 | $ctr = 0; |
| 338 | $tmp = ""; |
| 339 | for( $i = 0; $i < strlen( $txt ); $i++ ) { |
| 340 | if( $ctr == strlen( $encrypt_key ) ) $ctr=0; |
| 341 | $tmp.= substr( $txt, $i, 1 ) ^ substr( $encrypt_key, $ctr, 1 ); |
| 342 | $ctr++; |
| 343 | } |
| 344 | return $tmp; |
| 345 | } |
| 346 | |
| 347 | function encrypt( $txt ) { |
| 348 | |
| 349 | srand( (double) microtime() * 1000000 ); |
| 350 | $encrypt_key = md5( rand( 0, 32000 ) ); |
| 351 | $ctr = 0; |
| 352 | $tmp = ""; |
| 353 | for( $i = 0; $i < strlen( $txt ); $i++ ) { |
| 354 | if ($ctr==strlen($encrypt_key)) $ctr=0; |
| 355 | $tmp.= substr($encrypt_key,$ctr,1) . |
| 356 | (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1)); |
| 357 | $ctr++; |
| 358 | } |
| 359 | return bin2hex( mf_keyED( $tmp ) ); |
| 360 | |
| 361 | } |
| 362 | |
| 363 | function decrypt( $txt ) { |
| 364 | |
| 365 | $txt = mf_keyED( hex2bin( $txt ) ); |
| 366 | $tmp = ''; |
| 367 | for ( $i=0; $i < strlen( $txt ); $i++ ) { |
| 368 | $md5 = substr( $txt, $i, 1 ); |
| 369 | $i++; |
| 370 | $tmp.= ( substr( $txt, $i, 1 ) ^ $md5 ); |
| 371 | } |
| 372 | return $tmp; |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * check mail folder |
| 377 | * @param stream $imap_stream imap connection resource |
| 378 | * @param string $imap_folder imap folder name |
| 379 | * @return boolean true, when folder can be used to store messages. |
| 380 | * @since 1.5.1 and 1.4.5 |
| 381 | */ |
| 382 | function mail_fetch_check_folder($imap_stream,$imap_folder) { |
| 383 | global $mail_fetch_allow_unsubscribed; |
| 384 | |
| 385 | // check if folder is subscribed or only exists. |
| 386 | if (sqimap_mailbox_is_subscribed($imap_stream,$imap_folder)) { |
| 387 | $ret = true; |
| 388 | } elseif ($mail_fetch_allow_unsubscribed && sqimap_mailbox_exists($imap_stream,$imap_folder)) { |
| 389 | $ret = true; |
| 390 | } else { |
| 391 | $ret = false; |
| 392 | } |
| 393 | |
| 394 | // make sure that folder can store messages |
| 395 | if ($ret && mail_fetch_check_noselect($imap_stream,$imap_folder)) { |
| 396 | $ret = false; |
| 397 | } |
| 398 | |
| 399 | return $ret; |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * Checks if folder is noselect (can't store messages) |
| 404 | * |
| 405 | * Function does not check if folder subscribed. |
| 406 | * @param stream $imap_stream imap connection resource |
| 407 | * @param string $imap_folder imap folder name |
| 408 | * @return boolean true, when folder has noselect flag. false in any other case. |
| 409 | * @since 1.5.1 and 1.4.5 |
| 410 | */ |
| 411 | function mail_fetch_check_noselect($imap_stream,$imap_folder) { |
| 412 | $boxes=sqimap_mailbox_list($imap_stream); |
| 413 | foreach($boxes as $box) { |
| 414 | if ($box['unformatted']==$imap_folder) { |
| 415 | return (bool) check_is_noselect($box['raw']); |
| 416 | } |
| 417 | } |
| 418 | return false; |
| 419 | } |