Improved error handling, especially for everyone whose CVS install just broke because...
[squirrelmail.git] / class / deliver / Deliver_SMTP.class.php
CommitLineData
e1ee60fe 1<?php
5b8fd093 2/**
3 * Deliver_SMTP.class.php
4 *
76911253 5 * Copyright (c) 1999-2003 The SquirrelMail Project Team
5b8fd093 6 * Licensed under the GNU GPL. For full terms see the file COPYING.
7 *
8 * Delivery backend for the Deliver class.
9 *
10 * $Id$
11 */
e1ee60fe 12
0f85ddf9 13require_once(SM_PATH . 'class/deliver/Deliver.class.php');
e1ee60fe 14
15class Deliver_SMTP extends Deliver {
16
5fe73b9f 17 function preWriteToStream(&$s) {
18 if ($s) {
19 if ($s{0} == '.') $s = '.' . $s;
20 $s = str_replace("\n.","\n..",$s);
21 }
22 }
23
24 function initStream($message, $domain, $length=0, $host='', $port='', $user='', $pass='', $authpop=false) {
47a29326 25 global $use_smtp_tls,$smtp_auth_mech,$username,$key,$onetimepad;
26
27 if ($authpop) {
28 $this->authPop($host, '', $username, $pass);
5fe73b9f 29 }
47a29326 30
31 $rfc822_header = $message->rfc822_header;
5fe73b9f 32 $from = $rfc822_header->from[0];
33 $to = $rfc822_header->to;
34 $cc = $rfc822_header->cc;
47a29326 35 $bcc = $rfc822_header->bcc;
36
37 if (($use_smtp_tls == true) and (check_php_version(4,3)) and (extension_loaded('openssl'))) {
38 $stream = fsockopen('tls://' . $host, $port, $errorNumber, $errorString);
39 } else {
40 $stream = fsockopen($host, $port, $errorNumber, $errorString);
41 }
5fe73b9f 42
5fe73b9f 43 if (!$stream) {
44 $this->dlv_msg = $errorString;
45 $this->dlv_ret_nr = $errorNumber;
46 return(0);
47 }
48 $tmp = fgets($stream, 1024);
49 if ($this->errorCheck($tmp, $stream)) {
50 return(0);
51 }
52
53 /* Lets introduce ourselves */
639c7164 54 if (( $smtp_auth_mech == 'cram-md5') or ( $smtp_auth_mech == 'digest-md5' )) {
47a29326 55 // Doing some form of non-plain auth
56 fputs($stream, "EHLO $domain\r\n");
57 $tmp = fgets($stream,1024);
58 if ($this->errorCheck($tmp,$stream)) {
59 return(0);
60 }
61 if ($smtp_auth_mech == 'cram-md5') {
62 fputs($stream, "AUTH CRAM-MD5\r\n");
63 } elseif ($smtp_auth_mech == 'digest-md5') {
64 fputs($stream, "AUTH DIGEST-MD5\r\n");
65 }
66 $tmp = fgets($stream,1024);
67
68 if ($this->errorCheck($tmp,$stream)) {
69 return(0);
70 }
71
72 // At this point, $tmp should hold "334 <challenge string>"
73 $chall = substr($tmp,4);
74 // Depending on mechanism, generate response string
75 if ($smtp_auth_mech == 'cram-md5') {
76 $response = cram_md5_response($username,$pass,$chall);
77 } elseif ($smtp_auth_mech == 'digest-md5') {
78 $response = digest_md5_response($username,$pass,$chall,'smtp',$host);
79 }
80 fputs($stream, $response);
81
82 // Let's see what the server had to say about that
83 $tmp = fgets($stream,1024);
84 if ($this->errorCheck($tmp,$stream)) {
85 return(0);
86 }
87
88 // CRAM-MD5 is done at this point. If DIGEST-MD5, there's a bit more to go
89 if ($smtp_auth_mech == 'digest-md5')
90 {
91 // $tmp contains rspauth, but I don't store that yet. (No need yet)
92 fputs($stream,"\r\n");
93 $tmp = fgets($stream,1024);
94
95 if ($this->errorCheck($tmp,$stream)) {
96 return(0);
97 }
98 }
99 // CRAM-MD5 and DIGEST-MD5 code ends here
100 } elseif ($smtp_auth_mech == 'none') {
101 // No auth at all, just send helo and then send the mail
102 fputs($stream, "HELO $domain\r\n");
103 $tmp = fgets($stream, 1024);
104 if ($this->errorCheck($tmp, $stream)) {
105 return(0);
106 }
fe0b18b3 107 } elseif ($smtp_auth_mech == 'login') {
108 // The LOGIN method
47a29326 109 fputs($stream, "EHLO $domain\r\n");
110 $tmp = fgets($stream, 1024);
111 if ($this->errorCheck($tmp, $stream)) {
112 return(0);
113 }
114 fputs($stream, "AUTH LOGIN\r\n");
115 $tmp = fgets($stream, 1024);
5fe73b9f 116
47a29326 117 if ($this->errorCheck($tmp, $stream)) {
118 return(0);
119 }
120 fputs($stream, base64_encode ($username) . "\r\n");
121 $tmp = fgets($stream, 1024);
122 if ($this->errorCheck($tmp, $stream)) {
123 return(0);
124 }
5fe73b9f 125
47a29326 126 fputs($stream, base64_encode($pass) . "\r\n");
127 $tmp = fgets($stream, 1024);
128 if ($this->errorCheck($tmp, $stream)) {
129 return(0);
130 }
5fe73b9f 131 }
132
133 /* Ok, who is sending the message? */
134 fputs($stream, 'MAIL FROM: <'.$from->mailbox.'@'.$from->host.">\r\n");
135 $tmp = fgets($stream, 1024);
136 if ($this->errorCheck($tmp, $stream)) {
137 return(0);
138 }
139
140 /* send who the recipients are */
141 for ($i = 0, $cnt = count($to); $i < $cnt; $i++) {
142 if (!$to[$i]->host) $to[$i]->host = $domain;
d1825c3c 143 if ($to[$i]->mailbox) {
144 fputs($stream, 'RCPT TO: <'.$to[$i]->mailbox.'@'.$to[$i]->host.">\r\n");
145 $tmp = fgets($stream, 1024);
146 if ($this->errorCheck($tmp, $stream)) {
147 return(0);
148 }
5fe73b9f 149 }
150 }
d1825c3c 151
5fe73b9f 152 for ($i = 0, $cnt = count($cc); $i < $cnt; $i++) {
d1825c3c 153 if (!$cc[$i]->host) $cc[$i]->host = $domain;
154 if ($cc[$i]->mailbox) {
155 fputs($stream, 'RCPT TO: <'.$cc[$i]->mailbox.'@'.$cc[$i]->host.">\r\n");
156 $tmp = fgets($stream, 1024);
157 if ($this->errorCheck($tmp, $stream)) {
158 return(0);
159 }
5fe73b9f 160 }
161 }
162 for ($i = 0, $cnt = count($bcc); $i < $cnt; $i++) {
d1825c3c 163 if (!$bcc[$i]->host) $bcc[$i]->host = $domain;
164 if ($bcc[$i]->mailbox) {
165 fputs($stream, 'RCPT TO: <'.$bcc[$i]->mailbox.'@'.$bcc[$i]->host.">\r\n");
166 $tmp = fgets($stream, 1024);
167 if ($this->errorCheck($tmp, $stream)) {
168 return(0);
169 }
5fe73b9f 170 }
171 }
172 /* Lets start sending the actual message */
173 fputs($stream, "DATA\r\n");
174 $tmp = fgets($stream, 1024);
175 if ($this->errorCheck($tmp, $stream)) {
176 return(0);
177 }
178 return $stream;
179 }
180
181 function finalizeStream($stream) {
182 fputs($stream, ".\r\n"); /* end the DATA part */
183 $tmp = fgets($stream, 1024);
184 $this->errorCheck($tmp, $stream);
185 if ($this->dlv_ret_nr != 250) {
186 return(0);
187 }
188 fputs($stream, "QUIT\r\n"); /* log off */
189 fclose($stream);
190 return true;
191 }
192
193 function errorCheck($line, $smtpConnection) {
194 global $color, $compose_new_win;
47a29326 195
5fe73b9f 196 /* Read new lines on a multiline response */
197 $lines = $line;
198 while(ereg("^[0-9]+-", $line)) {
199 $line = fgets($smtpConnection, 1024);
200 $lines .= $line;
201 }
202 /* Status: 0 = fatal
203 * 5 = ok
204 */
205 $err_num = substr($line, 0, strpos($line, " "));
206 switch ($err_num) {
207 case 500: $message = 'Syntax error; command not recognized';
208 $status = 0;
209 break;
210 case 501: $message = 'Syntax error in parameters or arguments';
211 $status = 0;
212 break;
213 case 502: $message = 'Command not implemented';
214 $status = 0;
215 break;
216 case 503: $message = 'Bad sequence of commands';
217 $status = 0;
218 break;
219 case 504: $message = 'Command parameter not implemented';
220 $status = 0;
221 break;
222 case 211: $message = 'System status, or system help reply';
223 $status = 5;
224 break;
225 case 214: $message = 'Help message';
226 $status = 5;
227 break;
228 case 220: $message = 'Service ready';
229 $status = 5;
230 break;
231 case 221: $message = 'Service closing transmission channel';
232 $status = 5;
233 break;
47a29326 234 case 421: $message = 'Service not available, closing channel';
5fe73b9f 235 $status = 0;
236 break;
47a29326 237 case 235: $message = 'Authentication successful';
238 $status = 5;
239 break;
5fe73b9f 240 case 250: $message = 'Requested mail action okay, completed';
241 $status = 5;
242 break;
243 case 251: $message = 'User not local; will forward';
244 $status = 5;
245 break;
47a29326 246 case 334: $message = 'OK - continue request';
247 $status = 5;
248 break;
5fe73b9f 249 case 450: $message = 'Requested mail action not taken: mailbox unavailable';
250 $status = 0;
251 break;
252 case 550: $message = 'Requested action not taken: mailbox unavailable';
253 $status = 0;
254 break;
255 case 451: $message = 'Requested action aborted: error in processing';
256 $status = 0;
257 break;
258 case 551: $message = 'User not local; please try forwarding';
259 $status = 0;
260 break;
261 case 452: $message = 'Requested action not taken: insufficient system storage';
262 $status = 0;
263 break;
264 case 552: $message = 'Requested mail action aborted: exceeding storage allocation';
265 $status = 0;
266 break;
267 case 553: $message = 'Requested action not taken: mailbox name not allowed';
268 $status = 0;
269 break;
270 case 354: $message = 'Start mail input; end with .';
271 $status = 5;
272 break;
273 case 554: $message = 'Transaction failed';
274 $status = 0;
275 break;
276 /* RFC 2554 */
277 case 432: $message = 'A password transition is needed';
278 $status = 0;
279 break;
280 case 534: $message = 'Authentication mechanism is too weak';
281 $status = 0;
282 break;
283 case 538: $message = 'Encryption required for requested authentication mechanism';
284 $status = 0;
285 break;
286 case 454: $message = 'Temmporary authentication failure';
287 $status = 0;
288 break;
289 case 530: $message = 'Authentication required';
290 $status = 0;
291 break;
292 /* end RFC2554 */
47a29326 293 case 535: $message = 'Authentication failed';
294 $status = 0;
295 break;
5fe73b9f 296 default: $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
297 $status = 0;
298 $err_num = '001';
299 break;
300 }
301 $this->dlv_ret_nr = $err_num;
302 $this->dlv_msg = $message;
303 if ($status == 5) {
304 return false;
305 }
306 return true;
307 }
308
309 function authPop($pop_server='', $pop_port='', $user, $pass) {
310 if (!$pop_port) {
311 $pop_port = 110;
312 }
313 if (!$pop_server) {
314 $pop_server = 'localhost';
315 }
316 $popConnection = fsockopen($pop_server, $pop_port, $err_no, $err_str);
317 if (!$popConnection) {
318 error_log("Error connecting to POP Server ($pop_server:$pop_port)"
319 . " $err_no : $err_str");
320 } else {
321 $tmp = fgets($popConnection, 1024); /* banner */
322 if (!eregi("^\+OK", $tmp, $regs)) {
323 return(0);
324 }
325 fputs($popConnection, "USER $user\r\n");
326 $tmp = fgets($popConnection, 1024);
327 if (!eregi("^\+OK", $tmp, $regs)) {
328 return(0);
329 }
330 fputs($popConnection, 'PASS ' . $pass . "\r\n");
331 $tmp = fgets($popConnection, 1024);
332 if (!eregi("^\+OK", $tmp, $regs)) {
333 return(0);
334 }
335 fputs($popConnection, "QUIT\r\n"); /* log off */
336 fclose($popConnection);
337 }
338 }
e1ee60fe 339}
5fe73b9f 340
e1ee60fe 341?>