[squirrelmail.git] / functions / imap_general.php

<?php
   /**
    **  imap.php
    **
    **  This implements all functions that do general imap functions.
    **
    **  $Id$
    **/

   $imap_general_debug = false;

   /******************************************************************************
    **  Reads the output from the IMAP stream.  If handle_errors is set to true,
    **  this will also handle all errors that are received.  If it is not set,
    **  the errors will be sent back through $response and $message
    ******************************************************************************/
   function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
      global $color, $squirrelmail_language, $imap_general_debug;

      $read = fgets($imap_stream, 9096);

      if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
         $size = $regs[1];
      } else {
         $size = 0;
      }
      
      $data = Array();
      $total_size = 0;
      
      $continue = true;
      while ($continue) {
         // Continue if needed for this single line
         while (strpos($read, "\n") === false) {
            $read .= fgets($imap_stream, 9096);
         }
         // For debugging purposes
         if ($imap_general_debug) {
            echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
            flush();
         }


         // If we know the size, no need to look at the end parameters
         if ($size > 0) {
            if ($total_size == $size) {
               $data[] = $read;
               $read = fgets($imap_stream, 9096);
               $read = fgets($imap_stream, 9096);
               $continue = false;
            } else if ($total_size > $size) {
               $difference = $total_size - $size;
               $total_size = $total_size - strlen($read);
               $read = substr ($read, 0, strlen($read)-$difference);
               $data[] = $read;
               $junk = fgets($imap_stream, 9096);
               $continue = false;
            } else {
               $data[] = $read;
               $read = fgets($imap_stream, 9096);
            }
            $total_size += strlen($read);
         } else {
            if (ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) {
               $continue = false;
            } else {
               $data[] = $read;
               $read = fgets ($imap_stream, 9096);
            }
         }
      }

      $response = $regs[1];
      $message = trim($regs[2]);
      
      if ($imap_general_debug) echo "--<br>";

      if ($handle_errors == false)
          return $data;
     
      if ($response == "NO") {
         // ignore this error from m$ exchange, it is not fatal (aka bug)
         if (!ereg("command resulted in",$message)) { 
            set_up_language($squirrelmail_language);
            echo "<br><b><font color=$color[2]>\n";
            echo _("ERROR : Could not complete request.");
            echo "</b><br>\n";
            echo _("Reason Given: ");
            echo $message . "</font><br>\n";
            exit;
         }
      } else if ($response == "BAD") {
         set_up_language($squirrelmail_language);
         echo "<br><b><font color=$color[2]>\n";
         echo _("ERROR : Bad or malformed request.");
         echo "</b><br>\n";
         echo _("Server responded: ");
         echo $message . "</font><br>\n";
         exit;
      }
      
      return $data;
   }
   
   /******************************************************************************
    **  Logs the user into the imap server.  If $hide is set, no error messages
    **  will be displayed.  This function returns the imap connection handle.
    ******************************************************************************/
   function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
      global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;

      $imap_stream = fsockopen ($imap_server_address, $imap_port,
         $error_number, $error_string, 15);
      $server_info = fgets ($imap_stream, 1024);
      
      // Decrypt the password
      $password = OneTimePadDecrypt($password, $onetimepad);

      /** Do some error correction **/
      if (!$imap_stream) {
         if (!$hide) {
            set_up_language($squirrelmail_language, true);
            printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
            echo "$error_number : $error_string<br>\r\n";
         }
         exit;
      }

      fputs ($imap_stream, "a001 LOGIN \"" . quotemeta($username) . 
         "\" \"" . quotemeta($password) . "\"\r\n");
      $read = sqimap_read_data ($imap_stream, "a001", false, $response, $message);

      /** If the connection was not successful, lets see why **/
      if ($response != "OK") {
         if (!$hide) {
            if ($response != "NO") {
               // "BAD" and anything else gets reported here.
               set_up_language($squirrelmail_language, true);
               if ($response == "BAD")
                   printf (_("Bad request: %s")."<br>\r\n", $message);
               else
                   printf (_("Unknown error: %s") . "<br>\n", $message);
               echo "<br>";
               echo _("Read data:") . "<br>\n";
	       if (is_array($read))
	       {
                   foreach ($read as $line)
                   {
                       echo htmlspecialchars($line) . "<br>\n";
		   }
               }
               exit;
            } else {
               // If the user does not log in with the correct
               // username and password it is not possible to get the
               // correct locale from the user's preferences.
               // Therefore, apply the same hack as on the login
               // screen.

               // $squirrelmail_language is set by a cookie when
               // the user selects language and logs out
               
               set_up_language($squirrelmail_language, true);
               
               ?>
                  <html>
                     <body bgcolor=ffffff>
                        <br>
                        <center>
                        <table width=70% noborder bgcolor=ffffff align=center>
                           <tr>
                              <td bgcolor=dcdcdc>
                                 <font color=cc0000>
                                 <center>
                                 <?php echo _("ERROR") ?>
                                 </center>
                                 </font>
                              </td>
                           </tr>
                           <tr>
                              <td>
                                 <center>
                                 <?php echo _("Unknown user or password incorrect.") ?><br>
                                 <a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
                                 </center>
                              </td>
                           </tr>
                        </table>
                        </center>
                     </body>
                  </html>
               <?php
               session_destroy();
               exit;
            }
         } else {
            exit;
         }
      }

      return $imap_stream;
   }


   /******************************************************************************
    **  Simply logs out the imap session
    ******************************************************************************/
   function sqimap_logout ($imap_stream) {
      fputs ($imap_stream, "a001 LOGOUT\r\n");
   }

function sqimap_capability($imap_stream, $capability) {
	global $sqimap_capabilities;
	global $imap_general_debug;

	if (!is_array($sqimap_capabilities)) {
		fputs ($imap_stream, "a001 CAPABILITY\r\n");
		$read = sqimap_read_data($imap_stream, "a001", true, $a, $b);

		$c = explode(' ', $read[0]);
		for ($i=2; $i < count($c); $i++) {
			$cap_list = explode('=', $c[$i]);
			if (isset($cap_list[1]))
			    $sqimap_capabilities[$cap_list[0]] = $cap_list[1];
			else
 			    $sqimap_capabilities[$cap_list[0]] = TRUE;
		}
	}
	return $sqimap_capabilities[$capability];
}

   /******************************************************************************
    **  Returns the delimeter between mailboxes:  INBOX/Test, or INBOX.Test... 
    ******************************************************************************/
function sqimap_get_delimiter ($imap_stream = false) {
   global $imap_general_debug;
   global $sqimap_delimiter;
   global $optional_delimiter;

   /* Use configured delimiter if set */
   if((!empty($optional_delimiter)) && $optional_delimiter != "detect") {
      return $optional_delimiter;
   }

	/* Do some caching here */
    if (!$sqimap_delimiter) {
		if (sqimap_capability($imap_stream, "NAMESPACE")) {
			/* According to something that I can't find, this is supposed to work on all systems
			   OS: This won't work in Courier IMAP.
			   OS:  According to rfc2342 response from NAMESPACE command is:
			   OS:  * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
			   OS:  We want to lookup all personal NAMESPACES...
			*/
			fputs ($imap_stream, "a001 NAMESPACE\r\n");
			$read = sqimap_read_data($imap_stream, "a001", true, $a, $b);
			if (eregi('\* NAMESPACE +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL)', $read[0], $data)) {
				if (eregi('^\( *\((.*)\) *\)', $data[1], $data2))
					$pn = $data2[1];
				$pna = explode(')(', $pn);
				while (list($k, $v) = each($pna))
				{
					list($_, $n, $_, $d) = explode('"', $v);
					$pn[$n] = $d;
				}
/* OS: We don't need this code right now, it is for other_users and shared folders
				if (eregi('^\( *\((.*)\) *\)', $data[2], $data2))
					$on = $data2[1];
				if (eregi('^\( *\((.*)\) *\)', $data[3], $data2))
					$sn = $data2[1];
				unset($data);
				$ona = explode(')(', $on);
				while (list($k, $v) = each($ona))
				{
					list($_, $n, $_, $d) = explode('"', $v);
					$on[$n] = $d;
				}
				$sna = explode(')(', $sn);
				while (list($k, $v) = each($sna))
				{
					list($_, $n, $_, $d) = explode('"', $v);
					$sn[$n] = $d;
				}
*/
			}
			$sqimap_delimiter = $pn[0];
		} else {
			fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
			$read = sqimap_read_data($imap_stream, ".", true, $a, $b);
			$quote_position = strpos ($read[0], "\"");
			$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
		}
	}
	return $sqimap_delimiter;
}


   /******************************************************************************
    **  Gets the number of messages in the current mailbox. 
    ******************************************************************************/
   function sqimap_get_num_messages ($imap_stream, $mailbox) {
      fputs ($imap_stream, "a001 EXAMINE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data ($imap_stream, "a001", true, $result, $message);
      for ($i = 0; $i < count($read_ary); $i++) {
         if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
	    return $regs[1];
         }
      }
      return "BUG!  Couldn't get number of messages in $mailbox!";
   }

   
   /******************************************************************************
    **  Returns a displayable email address 
    ******************************************************************************/
   function sqimap_find_email ($string) {
      /** Luke Ehresman <lehresma@css.tayloru.edu>
       ** <lehresma@css.tayloru.edu>
       ** lehresma@css.tayloru.edu
       **
       ** What about
       **    lehresma@css.tayloru.edu (Luke Ehresman)
       **/

      if (ereg("<([^>]+)>", $string, $regs)) {
          $string = $regs[1];
      }
      return trim($string); 
   }

   
   /******************************************************************************
    **  Takes the From: field, and creates a displayable name.
    **    Luke Ehresman <lkehresman@yahoo.com>
    **           becomes:   Luke Ehresman
    **    <lkehresman@yahoo.com>
    **           becomes:   lkehresman@yahoo.com
    ******************************************************************************/
   function sqimap_find_displayable_name ($string) {
      $string = " ".trim($string);
      $orig_string = $string;
      if (strpos($string, "<") && strpos($string, ">")) {
         if (strpos($string, "<") == 1) {
            $string = sqimap_find_email($string);
         } else {
            $string = trim($string);
            $string = substr($string, 0, strpos($string, "<"));
            $string = ereg_replace ("\"", "", $string);   
         }   

         if (trim($string) == "") {
            $string = sqimap_find_email($orig_string);
         }
      }
      return $string; 
   }


   /******************************************************************************
    **  Returns the number of unseen messages in this folder 
    ******************************************************************************/
   function sqimap_unseen_messages ($imap_stream, &$num_unseen, $mailbox) {
      //fputs ($imap_stream, "a001 SEARCH UNSEEN NOT DELETED\r\n");
      fputs ($imap_stream, "a001 STATUS \"$mailbox\" (UNSEEN)\r\n");
      $read_ary = sqimap_read_data ($imap_stream, "a001", true, $result, $message);
      ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
      return $regs[1];
   }
 
  
   /******************************************************************************
    **  Saves a message to a given folder -- used for saving sent messages
    ******************************************************************************/
   function sqimap_append ($imap_stream, $sent_folder, $length) {
      fputs ($imap_stream, "a001 APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
      $tmp = fgets ($imap_stream, 1024);
   } 

   function sqimap_append_done ($imap_stream) {
      fputs ($imap_stream, "\r\n");
      $tmp = fgets ($imap_stream, 1024);
   }
?>
Commit	Line	Data
59177427	1	<?php
052e0c26	2	/**
	3	** imap.php
	4	**
	5	** This implements all functions that do general imap functions.
245a6892	6	**
245a6892	7	** $Id$
052e0c26	8	**/
052e0c26	9
a3db804c	10	$imap_general_debug = false;
a3db804c	11
052e0c26	12	/******************************************************************************
	13	** Reads the output from the IMAP stream. If handle_errors is set to true,
	14	** this will also handle all errors that are received. If it is not set,
	15	** the errors will be sent back through $response and $message
	16	******************************************************************************/
3d2504a1	17	function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
a3db804c	18	global $color, $squirrelmail_language, $imap_general_debug;
a3432f47	19
f358f099	20	$read = fgets($imap_stream, 9096);
245a6892	21
4e7d6212	22	if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
d9ca5b40	23	$size = $regs[1];
245a6892	24	} else {
245a6892	25	$size = 0;
d9ca5b40	26	}
d9ca5b40	27
245a6892	28	$data = Array();
4f5c1bcb	29	$total_size = 0;
245a6892	30
d9ca5b40	31	$continue = true;
	32	while ($continue) {
	33	// Continue if needed for this single line
	34	while (strpos($read, "\n") === false) {
	35	$read .= fgets($imap_stream, 9096);
	36	}
4f5c1bcb	37	// For debugging purposes
d9ca5b40	38	if ($imap_general_debug) {
	39	echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
	40	flush();
	41	}
4f5c1bcb	42
	43
	44	// If we know the size, no need to look at the end parameters
	45	if ($size > 0) {
	46	if ($total_size == $size) {
	47	$data[] = $read;
	48	$read = fgets($imap_stream, 9096);
	49	$read = fgets($imap_stream, 9096);
	50	$continue = false;
	51	} else if ($total_size > $size) {
	52	$difference = $total_size - $size;
	53	$total_size = $total_size - strlen($read);
	54	$read = substr ($read, 0, strlen($read)-$difference);
	55	$data[] = $read;
	56	$junk = fgets($imap_stream, 9096);
d9ca5b40	57	$continue = false;
4f5c1bcb	58	} else {
	59	$data[] = $read;
	60	$read = fgets($imap_stream, 9096);
d9ca5b40	61	}
4f5c1bcb	62	$total_size += strlen($read);
d9ca5b40	63	} else {
4f5c1bcb	64	if (ereg("^$pre (OK\|BAD\|NO)(.*)$", $read, $regs)) {
	65	$continue = false;
	66	} else {
	67	$data[] = $read;
	68	$read = fgets ($imap_stream, 9096);
	69	}
d9ca5b40	70	}
f358f099	71	}
a3db804c	72
3d2504a1	73	$response = $regs[1];
	74	$message = trim($regs[2]);
	75
a3432f47	76	if ($imap_general_debug) echo "--<br>";
052e0c26	77
f358f099	78	if ($handle_errors == false)
f358f099	79	return $data;
d9ca5b40	80
f358f099	81	if ($response == "NO") {
	82	// ignore this error from m$ exchange, it is not fatal (aka bug)
	83	if (!ereg("command resulted in",$message)) {
441f2d33	84	set_up_language($squirrelmail_language);
04632dbc	85	echo "<br><b><font color=$color[2]>\n";
f358f099	86	echo _("ERROR : Could not complete request.");
04632dbc	87	echo "</b><br>\n";
f358f099	88	echo _("Reason Given: ");
3d2504a1	89	echo $message . "</font><br>\n";
052e0c26	90	exit;
052e0c26	91	}
f358f099	92	} else if ($response == "BAD") {
	93	set_up_language($squirrelmail_language);
	94	echo "<br><b><font color=$color[2]>\n";
	95	echo _("ERROR : Bad or malformed request.");
	96	echo "</b><br>\n";
	97	echo _("Server responded: ");
	98	echo $message . "</font><br>\n";
	99	exit;
052e0c26	100	}
	101
	102	return $data;
	103	}
	104
052e0c26	105	/******************************************************************************
	106	** Logs the user into the imap server. If $hide is set, no error messages
	107	** will be displayed. This function returns the imap connection handle.
	108	******************************************************************************/
	109	function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
bc104ef3	110	global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;
1b187352	111
342c46bd	112	$imap_stream = fsockopen ($imap_server_address, $imap_port,
090595e1	113	$error_number, $error_string, 15);
052e0c26	114	$server_info = fgets ($imap_stream, 1024);
052e0c26	115
52eefafc	116	// Decrypt the password
bc104ef3	117	$password = OneTimePadDecrypt($password, $onetimepad);
52eefafc	118
052e0c26	119	/ Do some error correction /
	120	if (!$imap_stream) {
	121	if (!$hide) {
441f2d33	122	set_up_language($squirrelmail_language, true);
1b187352	123	printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
052e0c26	124	echo "$error_number : $error_string<br>\r\n";
	125	}
	126	exit;
	127	}
	128
45a94308	129	fputs ($imap_stream, "a001 LOGIN \"" . quotemeta($username) .
45a94308	130	"\" \"" . quotemeta($password) . "\"\r\n");
3d2504a1	131	$read = sqimap_read_data ($imap_stream, "a001", false, $response, $message);
052e0c26	132
052e0c26	133	/ If the connection was not successful, lets see why /
3d2504a1	134	if ($response != "OK") {
052e0c26	135	if (!$hide) {
3d2504a1	136	if ($response != "NO") {
3d2504a1	137	// "BAD" and anything else gets reported here.
441f2d33	138	set_up_language($squirrelmail_language, true);
3d2504a1	139	if ($response == "BAD")
	140	printf (_("Bad request: %s")."<br>\r\n", $message);
	141	else
	142	printf (_("Unknown error: %s") . "<br>\n", $message);
	143	echo "<br>";
	144	echo _("Read data:") . "<br>\n";
ec0b7dbd	145	if (is_array($read))
	146	{
	147	foreach ($read as $line)
	148	{
	149	echo htmlspecialchars($line) . "<br>\n";
	150	}
3d2504a1	151	}
052e0c26	152	exit;
165e24a7	153	} else {
1b187352	154	// If the user does not log in with the correct
	155	// username and password it is not possible to get the
	156	// correct locale from the user's preferences.
	157	// Therefore, apply the same hack as on the login
	158	// screen.
	159
	160	// $squirrelmail_language is set by a cookie when
	161	// the user selects language and logs out
	162
441f2d33	163	set_up_language($squirrelmail_language, true);
1b187352	164
052e0c26	165	?>
	166	<html>
	167	<body bgcolor=ffffff>
	168	<br>
	169	<center>
	170	<table width=70% noborder bgcolor=ffffff align=center>
	171	<tr>
	172	<td bgcolor=dcdcdc>
	173	<font color=cc0000>
	174	<center>
59177427	175	<?php echo _("ERROR") ?>
052e0c26	176	</center>
	177	</font>
	178	</td>
	179	</tr>
	180	<tr>
	181	<td>
	182	<center>
59177427	183	<?php echo _("Unknown user or password incorrect.") ?><br>
5630c7ec	184	<a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
052e0c26	185	</center>
	186	</td>
	187	</tr>
	188	</table>
	189	</center>
	190	</body>
	191	</html>
59177427	192	<?php
052e0c26	193	session_destroy();
052e0c26	194	exit;
052e0c26	195	}
	196	} else {
	197	exit;
	198	}
	199	}
	200
	201	return $imap_stream;
	202	}
	203
	204
	205
	206
	207	/******************************************************************************
	208	** Simply logs out the imap session
	209	******************************************************************************/
	210	function sqimap_logout ($imap_stream) {
	211	fputs ($imap_stream, "a001 LOGOUT\r\n");
	212	}
	213
a3db804c	214	function sqimap_capability($imap_stream, $capability) {
	215	global $sqimap_capabilities;
	216	global $imap_general_debug;
052e0c26	217
a3db804c	218	if (!is_array($sqimap_capabilities)) {
	219	fputs ($imap_stream, "a001 CAPABILITY\r\n");
	220	$read = sqimap_read_data($imap_stream, "a001", true, $a, $b);
	221
	222	$c = explode(' ', $read[0]);
	223	for ($i=2; $i < count($c); $i++) {
245a6892	224	$cap_list = explode('=', $c[$i]);
	225	if (isset($cap_list[1]))
	226	$sqimap_capabilities[$cap_list[0]] = $cap_list[1];
	227	else
	228	$sqimap_capabilities[$cap_list[0]] = TRUE;
a3db804c	229	}
	230	}
	231	return $sqimap_capabilities[$capability];
	232	}
052e0c26	233
	234	/******************************************************************************
	235	** Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test...
	236	******************************************************************************/
a3db804c	237	function sqimap_get_delimiter ($imap_stream = false) {
f6941f00	238	global $imap_general_debug;
	239	global $sqimap_delimiter;
	240	global $optional_delimiter;
	241
	242	/* Use configured delimiter if set */
	243	if((!empty($optional_delimiter)) && $optional_delimiter != "detect") {
	244	return $optional_delimiter;
	245	}
a3db804c	246
	247	/* Do some caching here */
	248	if (!$sqimap_delimiter) {
	249	if (sqimap_capability($imap_stream, "NAMESPACE")) {
	250	/* According to something that I can't find, this is supposed to work on all systems
	251	OS: This won't work in Courier IMAP.
	252	OS: According to rfc2342 response from NAMESPACE command is:
	253	OS: * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
	254	OS: We want to lookup all personal NAMESPACES...
	255	*/
	256	fputs ($imap_stream, "a001 NAMESPACE\r\n");
	257	$read = sqimap_read_data($imap_stream, "a001", true, $a, $b);
	258	if (eregi('\* NAMESPACE +(\( \(.+\) \)\|NIL) +(\( \(.+\) \)\|NIL) +(\( \(.+\) \)\|NIL)', $read[0], $data)) {
	259	if (eregi('^\( \((.)\) *\)', $data[1], $data2))
	260	$pn = $data2[1];
	261	$pna = explode(')(', $pn);
	262	while (list($k, $v) = each($pna))
	263	{
	264	list($_, $n, $_, $d) = explode('"', $v);
	265	$pn[$n] = $d;
	266	}
	267	/* OS: We don't need this code right now, it is for other_users and shared folders
	268	if (eregi('^\( \((.)\) *\)', $data[2], $data2))
	269	$on = $data2[1];
	270	if (eregi('^\( \((.)\) *\)', $data[3], $data2))
	271	$sn = $data2[1];
	272	unset($data);
	273	$ona = explode(')(', $on);
	274	while (list($k, $v) = each($ona))
	275	{
	276	list($_, $n, $_, $d) = explode('"', $v);
	277	$on[$n] = $d;
	278	}
	279	$sna = explode(')(', $sn);
	280	while (list($k, $v) = each($sna))
	281	{
	282	list($_, $n, $_, $d) = explode('"', $v);
	283	$sn[$n] = $d;
	284	}
	285	*/
	286	}
	287	$sqimap_delimiter = $pn[0];
40ba4d36	288	} else {
a3db804c	289	fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
	290	$read = sqimap_read_data($imap_stream, ".", true, $a, $b);
	291	$quote_position = strpos ($read[0], "\"");
	292	$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
40ba4d36	293	}
a3db804c	294	}
	295	return $sqimap_delimiter;
	296	}
052e0c26	297
	298
	299	/******************************************************************************
	300	** Gets the number of messages in the current mailbox.
	301	******************************************************************************/
	302	function sqimap_get_num_messages ($imap_stream, $mailbox) {
	303	fputs ($imap_stream, "a001 EXAMINE \"$mailbox\"\r\n");
	304	$read_ary = sqimap_read_data ($imap_stream, "a001", true, $result, $message);
	305	for ($i = 0; $i < count($read_ary); $i++) {
441f2d33	306	if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
441f2d33	307	return $regs[1];
052e0c26	308	}
052e0c26	309	}
441f2d33	310	return "BUG! Couldn't get number of messages in $mailbox!";
052e0c26	311	}
	312
	313
	314	/******************************************************************************
	315	** Returns a displayable email address
	316	******************************************************************************/
	317	function sqimap_find_email ($string) {
	318	/** Luke Ehresman <lehresma@css.tayloru.edu>
	319	** <lehresma@css.tayloru.edu>
	320	** lehresma@css.tayloru.edu
1d2ce1c3	321	**
	322	** What about
	323	** lehresma@css.tayloru.edu (Luke Ehresman)
052e0c26	324	**/
052e0c26	325
441f2d33	326	if (ereg("<([^>]+)>", $string, $regs)) {
441f2d33	327	$string = $regs[1];
052e0c26	328	}
	329	return trim($string);
	330	}
	331
	332
	333	/******************************************************************************
	334	** Takes the From: field, and creates a displayable name.
	335	** Luke Ehresman <lkehresman@yahoo.com>
	336	** becomes: Luke Ehresman
	337	** <lkehresman@yahoo.com>
	338	** becomes: lkehresman@yahoo.com
	339	******************************************************************************/
	340	function sqimap_find_displayable_name ($string) {
1d2ce1c3	341	$string = " ".trim($string);
	342	$orig_string = $string;
	343	if (strpos($string, "<") && strpos($string, ">")) {
	344	if (strpos($string, "<") == 1) {
	345	$string = sqimap_find_email($string);
	346	} else {
	347	$string = trim($string);
	348	$string = substr($string, 0, strpos($string, "<"));
	349	$string = ereg_replace ("\"", "", $string);
	350	}
	351
	352	if (trim($string) == "") {
	353	$string = sqimap_find_email($orig_string);
	354	}
	355	}
	356	return $string;
052e0c26	357	}
	358
	359
052e0c26	360	/******************************************************************************
	361	** Returns the number of unseen messages in this folder
	362	******************************************************************************/
c5eb2c03	363	function sqimap_unseen_messages ($imap_stream, &$num_unseen, $mailbox) {
	364	//fputs ($imap_stream, "a001 SEARCH UNSEEN NOT DELETED\r\n");
	365	fputs ($imap_stream, "a001 STATUS \"$mailbox\" (UNSEEN)\r\n");
052e0c26	366	$read_ary = sqimap_read_data ($imap_stream, "a001", true, $result, $message);
441f2d33	367	ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
441f2d33	368	return $regs[1];
052e0c26	369	}
	370
	371
	372	/******************************************************************************
	373	** Saves a message to a given folder -- used for saving sent messages
	374	******************************************************************************/
	375	function sqimap_append ($imap_stream, $sent_folder, $length) {
	376	fputs ($imap_stream, "a001 APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
	377	$tmp = fgets ($imap_stream, 1024);
	378	}
	379
	380	function sqimap_append_done ($imap_stream) {
	381	fputs ($imap_stream, "\r\n");
	382	$tmp = fgets ($imap_stream, 1024);
	383	}
	384	?>