/[docman2]/auth/pop3.php
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Contents of /auth/pop3.php

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Revision 1.2 - (show annotations)
Wed Apr 9 15:55:15 2003 UTC (19 years, 9 months ago) by dpavlin
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +6 -2 lines
- support for browsers without Accept Language headers
- removed debugging output
- support for filenames and dirnames with just whitespaces

1 <?
2
3 /*
4 Document manager auth_pop3.php module
5
6 WARNING: this modules uses e-mail address to check
7 login and password against pop3 server! e-mail must be
8 in following form:
9
10 login_on_pop3_server@pop3_server.domain
11
12 That should actually be also a vaild e-mail address
13
14
15 this module is based on class.POP3.php3 by cdi@thewebmasters.net
16 */
17
18 function auth_pop3($user) {
19 $email = explode("@",$user[3]);
20 $pop3 = new POP3();
21 $pop3->connect($email[1]);
22
23 if ($pop3->checklogin($email[0],stripslashes($GLOBALS['gblPasswd']))) {
24 $pop3->quit();
25 return true;
26 }
27 $pop3->quit();
28 error_log("docman: user $email[0] on $email[1] typed wrong password");
29 return false;
30 }
31
32 //--------------------------------------------------------------------------
33
34 /*
35 This is just a part of class.POP3.php3 which is needed for
36 auth_pop3.php module. Please look at original location for
37 whole class!
38
39 class.POP3.php3 v1.0 99/03/24 CDI cdi@thewebmasters.net
40 Copyright (c) 1999 - CDI (cdi@thewebmasters.net) All Rights Reserved
41
42 An RFC 1939 compliant wrapper class for the POP3 protocol.
43 */
44
45 class POP3
46 {
47 var $ERROR = ""; // Error string.
48
49 var $TIMEOUT = 60; // Default timeout before giving up on a
50 // network operation.
51
52 var $COUNT = -1; // Mailbox msg count
53
54 var $BUFFER = 512; // Socket buffer for socket fgets() calls.
55 // Per RFC 1939 the returned line a POP3
56 // server can send is 512 bytes.
57
58 var $FP = ""; // The connection to the server's
59 // file descriptor
60
61 var $MAILSERVER = ""; // Set this to hard code the server name
62
63 var $DEBUG = false;// set to true to echo pop3
64 // commands and responses to error_log
65 // this WILL log passwords!
66
67 var $BANNER = ""; // Holds the banner returned by the
68 // pop server - used for apop()
69
70 function POP3 ( $server = "", $timeout = "" )
71 {
72 settype($this->BUFFER,"integer");
73 if(!empty($server))
74 {
75 // Do not allow programs to alter MAILSERVER
76 // if it is already specified. They can get around
77 // this if they -really- want to, so don't count on it.
78 if(empty($this->MAILSERVER))
79 {
80 $this->MAILSERVER = $server;
81 }
82 }
83 if(!empty($timeout))
84 {
85 settype($timeout,"integer");
86 $this->TIMEOUT = $timeout;
87 set_time_limit($timeout);
88 }
89 return true;
90 }
91
92 function update_timer ()
93 {
94 set_time_limit($this->TIMEOUT);
95 return true;
96 }
97
98 function connect ($server, $port = 110)
99 {
100 // Opens a socket to the specified server. Unless overridden,
101 // port defaults to 110. Returns true on success, false on fail
102
103 // If MAILSERVER is set, override $server with it's value
104
105 if(!empty($this->MAILSERVER))
106 {
107 $server = $this->MAILSERVER;
108 }
109
110 if(empty($server))
111 {
112 $this->ERROR = "POP3 connect: No server specified";
113 unset($this->FP);
114 return false;
115 }
116
117 $fp = fsockopen("$server", $port, &$errno, &$errstr);
118
119 if(!$fp)
120 {
121 $this->ERROR = "POP3 connect: Error [$errno] [$errstr]";
122 unset($this->FP);
123 return false;
124 }
125
126 #set_socket_blocking($fp,-1);
127 socket_set_blocking($fp,-1); # fix for php 4.2.x
128
129 $this->update_timer();
130 $reply = fgets($fp,$this->BUFFER);
131 $reply = $this->strip_clf($reply);
132 if($this->DEBUG) { error_log("POP3 SEND [connect: $server] GOT [$reply]",0); }
133 if(!$this->is_ok($reply))
134 {
135 $this->ERROR = "POP3 connect: Error [$reply]";
136 unset($this->FP);
137 return false;
138 }
139 $this->FP = $fp;
140 $this->BANNER = $this->parse_banner($reply);
141 return true;
142 }
143
144 //-----------------------------
145
146 function checklogin ($user, $pass) {
147 $reply = $this->send_cmd("USER $user");
148 if(!$this->is_ok($reply))
149 {
150 $this->ERROR = "POP3 user: Error [$reply]";
151 return false;
152 }
153
154 $reply = $this->send_cmd("PASS $pass");
155 if(!$this->is_ok($reply))
156 {
157 $this->ERROR = "POP3 pass: authentication failed [$reply]";
158 $this->quit();
159 return false;
160 }
161 // Auth successful.
162 return true;
163 }
164
165 //-------------------------------------------
166
167 function noop ()
168 {
169 if(!isset($this->FP))
170 {
171 $this->ERROR = "POP3 noop: No connection to server";
172 return false;
173 }
174 $cmd = "NOOP";
175 $reply = $this->send_cmd($cmd);
176 if(!$this->is_ok($reply))
177 {
178 return false;
179 }
180 return true;
181 }
182
183 function send_cmd ( $cmd = "" )
184 {
185 // Sends a user defined command string to the
186 // POP server and returns the results. Useful for
187 // non-compliant or custom POP servers.
188 // Do NOT include the \r\n as part of your command
189 // string - it will be appended automatically.
190
191 // The return value is a standard fgets() call, which
192 // will read up to $this->BUFFER bytes of data, until it
193 // encounters a new line, or EOF, whichever happens first.
194
195 // This method works best if $cmd responds with only
196 // one line of data.
197
198 if(!isset($this->FP))
199 {
200 $this->ERROR = "POP3 send_cmd: No connection to server";
201 return false;
202 }
203
204 if(empty($cmd))
205 {
206 $this->ERROR = "POP3 send_cmd: Empty command string";
207 return "";
208 }
209
210 $fp = $this->FP;
211 $buffer = $this->BUFFER;
212 $this->update_timer();
213 fwrite($fp,"$cmd\r\n");
214 $reply = fgets($fp,$buffer);
215 $reply = $this->strip_clf($reply);
216 if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); }
217 return $reply;
218 }
219
220 function quit ()
221 {
222 // Closes the connection to the POP3 server, deleting
223 // any msgs marked as deleted.
224
225 if(!isset($this->FP))
226 {
227 $this->ERROR = "POP3 quit: connection does not exist";
228 return false;
229 }
230 $fp = $this->FP;
231 $cmd = "QUIT";
232 fwrite($fp,"$cmd\r\n");
233 $reply = fgets($fp,$this->BUFFER);
234 $reply = $this->strip_clf($reply);
235 if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); }
236 fclose($fp);
237 unset($this->FP);
238 return true;
239 }
240
241 // *********************************************************
242
243 // The following methods are internal to the class.
244
245 function is_ok ($cmd = "")
246 {
247 // Return true or false on +OK or -ERR
248
249 if(empty($cmd)) { return false; }
250 if ( ereg ("^\+OK", $cmd ) ) { return true; }
251 return false;
252 }
253
254 function strip_clf ($text = "")
255 {
256 // Strips \r\n from server responses
257
258 if(empty($text)) { return $text; }
259 $stripped = ereg_replace("\r","",$text);
260 $stripped = ereg_replace("\n","",$stripped);
261 return $stripped;
262 }
263
264 function parse_banner ( $server_text )
265 {
266 $outside = true;
267 $banner = "";
268 $length = strlen($server_text);
269 for($count =0; $count < $length; $count++)
270 {
271 $digit = substr($server_text,$count,1);
272 if(!empty($digit))
273 {
274 if( (!$outside) and ($digit != '<') and ($digit != '>') )
275 {
276 $banner .= $digit;
277 }
278 if ($digit == '<')
279 {
280 $outside = false;
281 }
282 if($digit == '>')
283 {
284 $outside = true;
285 }
286 }
287 }
288 $banner = $this->strip_clf($banner); // Just in case
289 return "<$banner>";
290 }
291
292 } // End class
293
294 ?>

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