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1 | <?php |
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2 | |
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3 | /** |
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4 | * mail_fetch/setup.php |
5 | * |
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6 | * Copyright (c) 1999-2004 The SquirrelMail Project Team |
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7 | * |
8 | * Copyright (c) 1999 CDI (cdi@thewebmasters.net) All Rights Reserved |
9 | * Modified by Philippe Mingo 2001 mingo@rotedic.com |
10 | * An RFC 1939 compliant wrapper class for the POP3 protocol. |
11 | * |
12 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
13 | * |
14 | * pop3 class |
15 | * |
16 | * $Id$ |
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17 | * @package plugins |
18 | * @subpackage mail_fetch |
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19 | */ |
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20 | |
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21 | /** |
22 | * This is the pop3 class - DOCUMENT ME |
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23 | * @package squirrelmail |
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24 | */ |
d622d38a |
25 | class POP3 { |
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26 | var $ERROR = ''; // Error string. |
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27 | |
28 | var $TIMEOUT = 60; // Default timeout before giving up on a |
29 | // network operation. |
30 | |
31 | var $COUNT = -1; // Mailbox msg count |
32 | |
33 | var $BUFFER = 512; // Socket buffer for socket fgets() calls. |
34 | // Per RFC 1939 the returned line a POP3 |
35 | // server can send is 512 bytes. |
36 | |
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37 | var $FP = ''; // The connection to the server's |
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38 | // file descriptor |
39 | |
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40 | var $MAILSERVER = ''; // Set this to hard code the server name |
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41 | |
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42 | var $DEBUG = FALSE; // set to true to echo pop3 |
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43 | // commands and responses to error_log |
44 | // this WILL log passwords! |
45 | |
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46 | var $BANNER = ''; // Holds the banner returned by the |
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47 | // pop server - used for apop() |
48 | |
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49 | var $ALLOWAPOP = FALSE; // Allow or disallow apop() |
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50 | // This must be set to true |
51 | // manually |
52 | |
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53 | function POP3 ( $server = '', $timeout = '' ) { |
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54 | settype($this->BUFFER,"integer"); |
55 | if( !empty($server) ) { |
56 | // Do not allow programs to alter MAILSERVER |
57 | // if it is already specified. They can get around |
58 | // this if they -really- want to, so don't count on it. |
59 | if(empty($this->MAILSERVER)) |
60 | $this->MAILSERVER = $server; |
61 | } |
62 | if(!empty($timeout)) { |
63 | settype($timeout,"integer"); |
64 | $this->TIMEOUT = $timeout; |
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65 | if (!ini_get('safe_mode')) |
66 | set_time_limit($timeout); |
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67 | } |
68 | return true; |
69 | } |
70 | |
71 | function update_timer () { |
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72 | if (!ini_get('safe_mode')) |
73 | set_time_limit($this->TIMEOUT); |
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74 | return true; |
75 | } |
76 | |
77 | function connect ($server, $port = 110) { |
78 | // Opens a socket to the specified server. Unless overridden, |
79 | // port defaults to 110. Returns true on success, false on fail |
80 | |
81 | // If MAILSERVER is set, override $server with it's value |
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82 | |
83 | if (!isset($port) || !$port) {$port = 110;} |
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84 | if(!empty($this->MAILSERVER)) |
85 | $server = $this->MAILSERVER; |
86 | |
87 | if(empty($server)){ |
88 | $this->ERROR = _("POP3 connect:") . ' ' . _("No server specified"); |
89 | unset($this->FP); |
90 | return false; |
91 | } |
92 | |
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93 | $fp = @fsockopen("$server", $port, $errno, $errstr); |
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94 | |
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95 | if(!$fp) { |
96 | $this->ERROR = _("POP3 connect:") . ' ' . _("Error ") . "[$errno] [$errstr]"; |
97 | unset($this->FP); |
98 | return false; |
99 | } |
100 | |
101 | socket_set_blocking($fp,-1); |
102 | $this->update_timer(); |
103 | $reply = fgets($fp,$this->BUFFER); |
104 | $reply = $this->strip_clf($reply); |
105 | if($this->DEBUG) |
106 | error_log("POP3 SEND [connect: $server] GOT [$reply]",0); |
107 | if(!$this->is_ok($reply)) { |
108 | $this->ERROR = _("POP3 connect:") . ' ' . _("Error ") . "[$reply]"; |
109 | unset($this->FP); |
110 | return false; |
111 | } |
112 | $this->FP = $fp; |
113 | $this->BANNER = $this->parse_banner($reply); |
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114 | return true; |
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115 | } |
116 | |
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117 | function user ($user = "") { |
118 | // Sends the USER command, returns true or false |
119 | |
120 | if( empty($user) ) { |
121 | $this->ERROR = _("POP3 user:") . ' ' . _("no login ID submitted"); |
122 | return false; |
123 | } elseif(!isset($this->FP)) { |
124 | $this->ERROR = _("POP3 user:") . ' ' . _("connection not established"); |
125 | return false; |
126 | } else { |
127 | $reply = $this->send_cmd("USER $user"); |
128 | if(!$this->is_ok($reply)) { |
129 | $this->ERROR = _("POP3 user:") . ' ' . _("Error ") . "[$reply]"; |
130 | return false; |
131 | } else |
132 | return true; |
133 | } |
134 | } |
135 | |
136 | function pass ($pass = "") { |
137 | // Sends the PASS command, returns # of msgs in mailbox, |
138 | // returns false (undef) on Auth failure |
139 | |
140 | if(empty($pass)) { |
141 | $this->ERROR = _("POP3 pass:") . ' ' . _("No password submitted"); |
142 | return false; |
143 | } elseif(!isset($this->FP)) { |
144 | $this->ERROR = _("POP3 pass:") . ' ' . _("connection not established"); |
145 | return false; |
146 | } else { |
147 | $reply = $this->send_cmd("PASS $pass"); |
148 | if(!$this->is_ok($reply)) { |
149 | $this->ERROR = _("POP3 pass:") . ' ' . _("authentication failed ") . "[$reply]"; |
150 | $this->quit(); |
151 | return false; |
152 | } else { |
153 | // Auth successful. |
154 | $count = $this->last("count"); |
155 | $this->COUNT = $count; |
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156 | return $count; |
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157 | } |
158 | } |
159 | } |
160 | |
161 | function apop ($login,$pass) { |
162 | // Attempts an APOP login. If this fails, it'll |
163 | // try a standard login. YOUR SERVER MUST SUPPORT |
164 | // THE USE OF THE APOP COMMAND! |
165 | // (apop is optional per rfc1939) |
166 | |
167 | if(!isset($this->FP)) { |
168 | $this->ERROR = _("POP3 apop:") . ' ' . _("No connection to server"); |
169 | return false; |
170 | } elseif(!$this->ALLOWAPOP) { |
171 | $retVal = $this->login($login,$pass); |
172 | return $retVal; |
173 | } elseif(empty($login)) { |
174 | $this->ERROR = _("POP3 apop:") . ' ' . _("No login ID submitted"); |
175 | return false; |
176 | } elseif(empty($pass)) { |
177 | $this->ERROR = _("POP3 apop:") . ' ' . _("No password submitted"); |
178 | return false; |
179 | } else { |
180 | $banner = $this->BANNER; |
181 | if( (!$banner) or (empty($banner)) ) { |
182 | $this->ERROR = _("POP3 apop:") . ' ' . _("No server banner") . ' - ' . _("abort"); |
183 | $retVal = $this->login($login,$pass); |
184 | return $retVal; |
185 | } else { |
186 | $AuthString = $banner; |
187 | $AuthString .= $pass; |
188 | $APOPString = md5($AuthString); |
189 | $cmd = "APOP $login $APOPString"; |
190 | $reply = $this->send_cmd($cmd); |
191 | if(!$this->is_ok($reply)) { |
192 | $this->ERROR = _("POP3 apop:") . ' ' . _("apop authentication failed") . ' - ' . _("abort"); |
193 | $retVal = $this->login($login,$pass); |
194 | return $retVal; |
195 | } else { |
196 | // Auth successful. |
197 | $count = $this->last("count"); |
198 | $this->COUNT = $count; |
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199 | return $count; |
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200 | } |
201 | } |
202 | } |
203 | } |
204 | |
205 | function login ($login = "", $pass = "") { |
206 | // Sends both user and pass. Returns # of msgs in mailbox or |
207 | // false on failure (or -1, if the error occurs while getting |
208 | // the number of messages.) |
209 | |
210 | if( !isset($this->FP) ) { |
211 | $this->ERROR = _("POP3 login:") . ' ' . _("No connection to server"); |
212 | return false; |
213 | } else { |
214 | $fp = $this->FP; |
215 | if( !$this->user( $login ) ) { |
216 | // Preserve the error generated by user() |
217 | return false; |
218 | } else { |
219 | $count = $this->pass($pass); |
220 | if( (!$count) || ($count == -1) ) { |
221 | // Preserve the error generated by last() and pass() |
222 | return false; |
223 | } else |
224 | return $count; |
225 | } |
226 | } |
227 | } |
228 | |
229 | function top ($msgNum, $numLines = "0") { |
230 | // Gets the header and first $numLines of the msg body |
231 | // returns data in an array with each returned line being |
232 | // an array element. If $numLines is empty, returns |
233 | // only the header information, and none of the body. |
234 | |
235 | if(!isset($this->FP)) { |
236 | $this->ERROR = _("POP3 top:") . ' ' . _("No connection to server"); |
237 | return false; |
238 | } |
239 | $this->update_timer(); |
240 | |
241 | $fp = $this->FP; |
242 | $buffer = $this->BUFFER; |
243 | $cmd = "TOP $msgNum $numLines"; |
244 | fwrite($fp, "TOP $msgNum $numLines\r\n"); |
245 | $reply = fgets($fp, $buffer); |
246 | $reply = $this->strip_clf($reply); |
247 | if($this->DEBUG) { |
248 | @error_log("POP3 SEND [$cmd] GOT [$reply]",0); |
249 | } |
250 | if(!$this->is_ok($reply)) |
251 | { |
252 | $this->ERROR = _("POP3 top:") . ' ' . _("Error ") . "[$reply]"; |
253 | return false; |
254 | } |
255 | |
256 | $count = 0; |
257 | $MsgArray = array(); |
258 | |
259 | $line = fgets($fp,$buffer); |
260 | while ( !ereg("^\.\r\n",$line)) |
261 | { |
262 | $MsgArray[$count] = $line; |
263 | $count++; |
264 | $line = fgets($fp,$buffer); |
265 | if(empty($line)) { break; } |
266 | } |
267 | |
268 | return $MsgArray; |
269 | } |
270 | |
271 | function pop_list ($msgNum = "") { |
272 | // If called with an argument, returns that msgs' size in octets |
273 | // No argument returns an associative array of undeleted |
274 | // msg numbers and their sizes in octets |
275 | |
276 | if(!isset($this->FP)) |
277 | { |
278 | $this->ERROR = _("POP3 pop_list:") . ' ' . _("No connection to server"); |
279 | return false; |
280 | } |
281 | $fp = $this->FP; |
282 | $Total = $this->COUNT; |
283 | if( (!$Total) or ($Total == -1) ) |
284 | { |
285 | return false; |
286 | } |
287 | if($Total == 0) |
288 | { |
289 | return array("0","0"); |
290 | // return -1; // mailbox empty |
291 | } |
292 | |
293 | $this->update_timer(); |
294 | |
295 | if(!empty($msgNum)) |
296 | { |
297 | $cmd = "LIST $msgNum"; |
298 | fwrite($fp,"$cmd\r\n"); |
299 | $reply = fgets($fp,$this->BUFFER); |
300 | $reply = $this->strip_clf($reply); |
301 | if($this->DEBUG) { |
302 | @error_log("POP3 SEND [$cmd] GOT [$reply]",0); |
303 | } |
304 | if(!$this->is_ok($reply)) |
305 | { |
306 | $this->ERROR = _("POP3 pop_list:") . ' ' . _("Error ") . "[$reply]"; |
307 | return false; |
308 | } |
309 | list($junk,$num,$size) = explode(" ",$reply); |
310 | return $size; |
311 | } |
312 | $cmd = "LIST"; |
313 | $reply = $this->send_cmd($cmd); |
314 | if(!$this->is_ok($reply)) |
315 | { |
316 | $reply = $this->strip_clf($reply); |
317 | $this->ERROR = _("POP3 pop_list:") . ' ' . _("Error ") . "[$reply]"; |
318 | return false; |
319 | } |
320 | $MsgArray = array(); |
321 | $MsgArray[0] = $Total; |
322 | for($msgC=1;$msgC <= $Total; $msgC++) |
323 | { |
324 | if($msgC > $Total) { break; } |
325 | $line = fgets($fp,$this->BUFFER); |
326 | $line = $this->strip_clf($line); |
327 | if(ereg("^\.",$line)) |
328 | { |
329 | $this->ERROR = _("POP3 pop_list:") . ' ' . _("Premature end of list"); |
330 | return false; |
331 | } |
332 | list($thisMsg,$msgSize) = explode(" ",$line); |
333 | settype($thisMsg,"integer"); |
334 | if($thisMsg != $msgC) |
335 | { |
336 | $MsgArray[$msgC] = "deleted"; |
337 | } |
338 | else |
339 | { |
340 | $MsgArray[$msgC] = $msgSize; |
341 | } |
342 | } |
343 | return $MsgArray; |
344 | } |
345 | |
346 | function get ($msgNum) { |
347 | // Retrieve the specified msg number. Returns an array |
348 | // where each line of the msg is an array element. |
349 | |
350 | if(!isset($this->FP)) |
351 | { |
352 | $this->ERROR = _("POP3 get:") . ' ' . _("No connection to server"); |
353 | return false; |
354 | } |
355 | |
356 | $this->update_timer(); |
357 | |
358 | $fp = $this->FP; |
359 | $buffer = $this->BUFFER; |
360 | $cmd = "RETR $msgNum"; |
361 | $reply = $this->send_cmd($cmd); |
362 | |
363 | if(!$this->is_ok($reply)) |
364 | { |
365 | $this->ERROR = _("POP3 get:") . ' ' . _("Error ") . "[$reply]"; |
366 | return false; |
367 | } |
368 | |
369 | $count = 0; |
370 | $MsgArray = array(); |
371 | |
372 | $line = fgets($fp,$buffer); |
373 | while ( !ereg("^\.\r\n",$line)) |
374 | { |
375 | $MsgArray[$count] = $line; |
376 | $count++; |
377 | $line = fgets($fp,$buffer); |
378 | if(empty($line)) { break; } |
379 | } |
380 | return $MsgArray; |
381 | } |
382 | |
383 | function last ( $type = "count" ) { |
384 | // Returns the highest msg number in the mailbox. |
385 | // returns -1 on error, 0+ on success, if type != count |
386 | // results in a popstat() call (2 element array returned) |
387 | |
388 | $last = -1; |
389 | if(!isset($this->FP)) |
390 | { |
391 | $this->ERROR = _("POP3 last:") . ' ' . _("No connection to server"); |
392 | return $last; |
393 | } |
394 | |
395 | $reply = $this->send_cmd("STAT"); |
396 | if(!$this->is_ok($reply)) |
397 | { |
398 | $this->ERROR = _("POP3 last:") . ' ' . _("Error ") . "[$reply]"; |
399 | return $last; |
400 | } |
401 | |
402 | $Vars = explode(" ",$reply); |
403 | $count = $Vars[1]; |
404 | $size = $Vars[2]; |
405 | settype($count,"integer"); |
406 | settype($size,"integer"); |
407 | if($type != "count") |
408 | { |
409 | return array($count,$size); |
410 | } |
411 | return $count; |
412 | } |
413 | |
414 | function reset () { |
415 | // Resets the status of the remote server. This includes |
416 | // resetting the status of ALL msgs to not be deleted. |
417 | // This method automatically closes the connection to the server. |
418 | |
419 | if(!isset($this->FP)) |
420 | { |
421 | $this->ERROR = _("POP3 reset:") . ' ' . _("No connection to server"); |
422 | return false; |
423 | } |
424 | $reply = $this->send_cmd("RSET"); |
425 | if(!$this->is_ok($reply)) |
426 | { |
427 | // The POP3 RSET command -never- gives a -ERR |
428 | // response - if it ever does, something truely |
429 | // wild is going on. |
430 | |
431 | $this->ERROR = _("POP3 reset:") . ' ' . _("Error ") . "[$reply]"; |
432 | @error_log("POP3 reset: ERROR [$reply]",0); |
433 | } |
434 | $this->quit(); |
435 | return true; |
436 | } |
437 | |
438 | function send_cmd ( $cmd = "" ) |
439 | { |
440 | // Sends a user defined command string to the |
441 | // POP server and returns the results. Useful for |
442 | // non-compliant or custom POP servers. |
443 | // Do NOT includ the \r\n as part of your command |
444 | // string - it will be appended automatically. |
445 | |
446 | // The return value is a standard fgets() call, which |
447 | // will read up to $this->BUFFER bytes of data, until it |
448 | // encounters a new line, or EOF, whichever happens first. |
449 | |
450 | // This method works best if $cmd responds with only |
451 | // one line of data. |
452 | |
453 | if(!isset($this->FP)) |
454 | { |
455 | $this->ERROR = _("POP3 send_cmd:") . ' ' . _("No connection to server"); |
456 | return false; |
457 | } |
458 | |
459 | if(empty($cmd)) |
460 | { |
461 | $this->ERROR = _("POP3 send_cmd:") . ' ' . _("Empty command string"); |
462 | return ""; |
463 | } |
464 | |
465 | $fp = $this->FP; |
466 | $buffer = $this->BUFFER; |
467 | $this->update_timer(); |
468 | fwrite($fp,"$cmd\r\n"); |
469 | $reply = fgets($fp,$buffer); |
470 | $reply = $this->strip_clf($reply); |
471 | if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); } |
472 | return $reply; |
473 | } |
474 | |
475 | function quit() { |
476 | // Closes the connection to the POP3 server, deleting |
477 | // any msgs marked as deleted. |
478 | |
479 | if(!isset($this->FP)) |
480 | { |
481 | $this->ERROR = _("POP3 quit:") . ' ' . _("connection does not exist"); |
482 | return false; |
483 | } |
484 | $fp = $this->FP; |
485 | $cmd = "QUIT"; |
486 | fwrite($fp,"$cmd\r\n"); |
487 | $reply = fgets($fp,$this->BUFFER); |
488 | $reply = $this->strip_clf($reply); |
489 | if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); } |
490 | fclose($fp); |
491 | unset($this->FP); |
492 | return true; |
493 | } |
494 | |
495 | function popstat () { |
496 | // Returns an array of 2 elements. The number of undeleted |
497 | // msgs in the mailbox, and the size of the mbox in octets. |
498 | |
499 | $PopArray = $this->last("array"); |
500 | |
501 | if($PopArray == -1) { return false; } |
502 | |
503 | if( (!$PopArray) or (empty($PopArray)) ) |
504 | { |
505 | return false; |
506 | } |
507 | return $PopArray; |
508 | } |
509 | |
510 | function uidl ($msgNum = "") |
511 | { |
512 | // Returns the UIDL of the msg specified. If called with |
513 | // no arguments, returns an associative array where each |
514 | // undeleted msg num is a key, and the msg's uidl is the element |
515 | // Array element 0 will contain the total number of msgs |
516 | |
517 | if(!isset($this->FP)) { |
518 | $this->ERROR = _("POP3 uidl:") . ' ' . _("No connection to server"); |
519 | return false; |
520 | } |
521 | |
522 | $fp = $this->FP; |
523 | $buffer = $this->BUFFER; |
524 | |
525 | if(!empty($msgNum)) { |
526 | $cmd = "UIDL $msgNum"; |
527 | $reply = $this->send_cmd($cmd); |
528 | if(!$this->is_ok($reply)) |
529 | { |
530 | $this->ERROR = _("POP3 uidl:") . ' ' . _("Error ") . "[$reply]"; |
531 | return false; |
532 | } |
533 | list ($ok,$num,$myUidl) = explode(" ",$reply); |
534 | return $myUidl; |
535 | } else { |
536 | $this->update_timer(); |
537 | |
538 | $UIDLArray = array(); |
539 | $Total = $this->COUNT; |
540 | $UIDLArray[0] = $Total; |
541 | |
542 | if ($Total < 1) |
543 | { |
544 | return $UIDLArray; |
545 | } |
546 | $cmd = "UIDL"; |
547 | fwrite($fp, "UIDL\r\n"); |
548 | $reply = fgets($fp, $buffer); |
549 | $reply = $this->strip_clf($reply); |
550 | if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); } |
551 | if(!$this->is_ok($reply)) |
552 | { |
553 | $this->ERROR = _("POP3 uidl:") . ' ' . _("Error ") . "[$reply]"; |
554 | return false; |
555 | } |
556 | |
557 | $line = ""; |
558 | $count = 1; |
559 | $line = fgets($fp,$buffer); |
560 | while ( !ereg("^\.\r\n",$line)) { |
561 | if(ereg("^\.\r\n",$line)) { |
562 | break; |
563 | } |
564 | list ($msg,$msgUidl) = explode(" ",$line); |
565 | $msgUidl = $this->strip_clf($msgUidl); |
566 | if($count == $msg) { |
567 | $UIDLArray[$msg] = $msgUidl; |
568 | } |
569 | else |
570 | { |
d3c89357 |
571 | $UIDLArray[$count] = 'deleted'; |
d622d38a |
572 | } |
573 | $count++; |
574 | $line = fgets($fp,$buffer); |
575 | } |
576 | } |
577 | return $UIDLArray; |
578 | } |
579 | |
580 | function delete ($msgNum = "") { |
581 | // Flags a specified msg as deleted. The msg will not |
582 | // be deleted until a quit() method is called. |
583 | |
584 | if(!isset($this->FP)) |
585 | { |
586 | $this->ERROR = _("POP3 delete:") . ' ' . _("No connection to server"); |
587 | return false; |
588 | } |
589 | if(empty($msgNum)) |
590 | { |
591 | $this->ERROR = _("POP3 delete:") . ' ' . _("No msg number submitted"); |
592 | return false; |
593 | } |
594 | $reply = $this->send_cmd("DELE $msgNum"); |
595 | if(!$this->is_ok($reply)) |
596 | { |
597 | $this->ERROR = _("POP3 delete:") . ' ' . _("Command failed ") . "[$reply]"; |
598 | return false; |
599 | } |
600 | return true; |
601 | } |
602 | |
603 | // ********************************************************* |
604 | |
605 | // The following methods are internal to the class. |
606 | |
607 | function is_ok ($cmd = "") { |
608 | // Return true or false on +OK or -ERR |
609 | |
610 | if( empty($cmd) ) |
611 | return false; |
612 | else |
613 | return( ereg ("^\+OK", $cmd ) ); |
614 | } |
615 | |
616 | function strip_clf ($text = "") { |
617 | // Strips \r\n from server responses |
618 | |
619 | if(empty($text)) |
620 | return $text; |
621 | else { |
622 | $stripped = str_replace("\r",'',$text); |
623 | $stripped = str_replace("\n",'',$stripped); |
624 | return $stripped; |
625 | } |
626 | } |
627 | |
628 | function parse_banner ( $server_text ) { |
629 | $outside = true; |
630 | $banner = ""; |
631 | $length = strlen($server_text); |
632 | for($count =0; $count < $length; $count++) |
633 | { |
634 | $digit = substr($server_text,$count,1); |
635 | if(!empty($digit)) { |
636 | if( (!$outside) && ($digit != '<') && ($digit != '>') ) |
637 | { |
638 | $banner .= $digit; |
639 | } |
640 | if ($digit == '<') |
641 | { |
642 | $outside = false; |
643 | } |
644 | if($digit == '>') |
645 | { |
646 | $outside = true; |
647 | } |
648 | } |
649 | } |
650 | $banner = $this->strip_clf($banner); // Just in case |
651 | return "<$banner>"; |
652 | } |
653 | |
654 | } // End class |
655 | |
656 | ?> |