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<?php
/**
* imap_general.php
*
* This implements all functions that do general IMAP functions.
*
* @copyright 1999-2010 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: imap_general.php 13972 2010-07-23 03:18:42Z pdontthink $
* @package squirrelmail
* @subpackage imap
*/
/** Includes.. */
require_once(SM_PATH . 'functions/page_header.php');
require_once(SM_PATH . 'functions/auth.php');
/**
* Generates a new session ID by incrementing the last one used;
* this ensures that each command has a unique ID.
* @param bool unique_id
* @return string IMAP session id of the form 'A000'.
*/
function sqimap_session_id($unique_id = FALSE) {
static $sqimap_session_id = 1;
if (!$unique_id) {
return( sprintf("A%03d", $sqimap_session_id++) );
} else {
return( sprintf("A%03d", $sqimap_session_id++) . ' UID' );
}
}
/**
* Both send a command and accept the result from the command.
* This is to allow proper session number handling.
*/
function sqimap_run_command_list ($imap_stream, $query, $handle_errors, &$response, &$message, $unique_id = false) {
if ($imap_stream) {
$sid = sqimap_session_id($unique_id);
fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
$read = sqimap_read_data_list ($imap_stream, $sid, $handle_errors, $response, $message, $query );
return $read;
} else {
global $squirrelmail_language, $color;
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: No available IMAP stream.") .
"</b></font>\n";
error_box($string,$color);
return false;
}
}
function sqimap_run_command ($imap_stream, $query, $handle_errors, &$response,
&$message, $unique_id = false,$filter=false,
$outputstream=false,$no_return=false) {
if ($imap_stream) {
$sid = sqimap_session_id($unique_id);
fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
$read = sqimap_read_data ($imap_stream, $sid, $handle_errors, $response,
$message, $query,$filter,$outputstream,$no_return);
return $read;
} else {
global $squirrelmail_language, $color;
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: No available IMAP stream.") .
"</b></font>\n";
error_box($string,$color);
return false;
}
}
function sqimap_run_literal_command($imap_stream, $query, $handle_errors, &$response, &$message, $unique_id = false) {
if ($imap_stream) {
$sid = sqimap_session_id($unique_id);
$command = sprintf("%s {%d}\r\n", $query['command'], strlen($query['literal_args'][0]));
fputs($imap_stream, $sid . ' ' . $command);
// TODO: Put in error handling here //
$read = sqimap_read_data($imap_stream, $sid, $handle_errors, $response, $message, $query['command']);
$i = 0;
$cnt = count($query['literal_args']);
while( $i < $cnt ) {
if (($cnt > 1) && ($i < ($cnt - 1))) {
$command = sprintf("%s {%d}\r\n", $query['literal_args'][$i], strlen($query['literal_args'][$i+1]));
} else {
$command = sprintf("%s\r\n", $query['literal_args'][$i]);
}
fputs($imap_stream, $command);
$read = sqimap_read_data($imap_stream, $sid, $handle_errors, $response, $message, $query['command']);
$i++;
}
return $read;
} else {
global $squirrelmail_language, $color;
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: No available IMAP stream.") .
"</b></font>\n";
error_box($string,$color);
return false;
}
}
/**
* Custom fgets function: gets a line from the IMAP server,
* no matter how big it may be.
* @param stream imap_stream the stream to read from
* @return string a line
*/
function sqimap_fgets($imap_stream) {
$read = '';
$buffer = 4096;
$results = '';
$offset = 0;
while (strpos($results, "\r\n", $offset) === false) {
if (!($read = fgets($imap_stream, $buffer))) {
/* this happens in case of an error */
/* reset $results because it's useless */
$results = false;
break;
}
if ( $results != '' ) {
$offset = strlen($results) - 1;
}
$results .= $read;
}
return $results;
}
function sqimap_fread($imap_stream,$iSize,$filter=false,
$outputstream=false, $no_return=false) {
if (!$filter || !$outputstream) {
$iBufferSize = $iSize;
} else {
// see php bug 24033. They changed fread behaviour %$^&$%
$iBufferSize = 7800; // multiple of 78 in case of base64 decoding.
}
if ($iSize < $iBufferSize) {
$iBufferSize = $iSize;
}
$iRetrieved = 0;
$results = '';
$sRead = $sReadRem = '';
// NB: fread can also stop at end of a packet on sockets.
while ($iRetrieved < $iSize) {
$sRead = fread($imap_stream,$iBufferSize);
$iLength = strlen($sRead);
$iRetrieved += $iLength ;
$iRemaining = $iSize - $iRetrieved;
if ($iRemaining < $iBufferSize) {
$iBufferSize = $iRemaining;
}
if ($sRead == '') {
$results = false;
break;
}
if ($sReadRem != '') {
$sRead = $sReadRem . $sRead;
$sReadRem = '';
}
if ($filter && $sRead != '') {
// in case the filter is base64 decoding we return a remainder
$sReadRem = $filter($sRead);
}
if ($outputstream && $sRead != '') {
if (is_resource($outputstream)) {
fwrite($outputstream,$sRead);
} else if ($outputstream == 'php://stdout') {
echo $sRead;
}
}
if ($no_return) {
$sRead = '';
} else {
$results .= $sRead;
}
}
return $results;
}
/**
* 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 $message.
*/
function sqimap_read_data_list ($imap_stream, $tag_uid, $handle_errors,
&$response, &$message, $query = '',
$filter = false, $outputstream = false, $no_return = false) {
global $color, $squirrelmail_language;
$read = '';
$tag_uid_a = explode(' ',trim($tag_uid));
$tag = $tag_uid_a[0];
$resultlist = array();
$data = array();
$read = sqimap_fgets($imap_stream);
$i = 0;
while ($read) {
$char = $read{0};
switch ($char)
{
case '+':
{
$response = 'OK';
break 2;
}
default:
$read = sqimap_fgets($imap_stream);
break;
case $tag{0}:
{
/* get the command */
$arg = '';
$i = strlen($tag)+1;
$s = substr($read,$i);
if (($j = strpos($s,' ')) || ($j = strpos($s,"\n"))) {
$arg = substr($s,0,$j);
}
$found_tag = substr($read,0,$i-1);
if ($arg && $found_tag==$tag) {
switch ($arg)
{
case 'OK':
case 'BAD':
case 'NO':
case 'BYE':
case 'PREAUTH':
$response = $arg;
$message = trim(substr($read,$i+strlen($arg)));
break 3; /* switch switch while */
default:
/* this shouldn't happen */
$response = $arg;
$message = trim(substr($read,$i+strlen($arg)));
break 3; /* switch switch while */
}
} elseif($found_tag !== $tag) {
/* reset data array because we do not need this reponse */
$data = array();
$read = sqimap_fgets($imap_stream);
break;
}
} // end case $tag{0}
case '*':
{
if (preg_match('/^\*\s\d+\sFETCH/',$read)) {
/* check for literal */
$s = substr($read,-3);
$fetch_data = array();
do { /* outer loop, continue until next untagged fetch
or tagged reponse */
do { /* innerloop for fetching literals. with this loop
we prohibid that literal responses appear in the
outer loop so we can trust the untagged and
tagged info provided by $read */
$read_literal = false;
if ($s === "}\r\n") {
$j = strrpos($read,'{');
$iLit = substr($read,$j+1,-3);
$fetch_data[] = $read;
$sLiteral = sqimap_fread($imap_stream,$iLit,$filter,$outputstream,$no_return);
if ($sLiteral === false) { /* error */
break 4; /* while while switch while */
}
/* backwards compattibility */
$aLiteral = explode("\n", $sLiteral);
/* release not neaded data */
unset($sLiteral);
foreach ($aLiteral as $line) {
$fetch_data[] = $line ."\n";
}
/* release not neaded data */
unset($aLiteral);
/* next fgets belongs to this fetch because
we just got the exact literalsize and there
must follow data to complete the response */
$read = sqimap_fgets($imap_stream);
if ($read === false) { /* error */
break 4; /* while while switch while */
}
$s = substr($read,-3);
$read_literal = true;
continue;
} else {
$fetch_data[] = $read;
}
/* retrieve next line and check in the while
statements if it belongs to this fetch response */
$read = sqimap_fgets($imap_stream);
if ($read === false) { /* error */
break 4; /* while while switch while */
}
/* check for next untagged reponse and break */
if ($read{0} == '*') break 2;
$s = substr($read,-3);
} while ($s === "}\r\n" || $read_literal);
$s = substr($read,-3);
} while ($read{0} !== '*' &&
substr($read,0,strlen($tag)) !== $tag);
$resultlist[] = $fetch_data;
/* release not neaded data */
unset ($fetch_data);
} else {
$s = substr($read,-3);
do {
if ($s === "}\r\n") {
$j = strrpos($read,'{');
$iLit = substr($read,$j+1,-3);
// check for numeric value to avoid that untagged responses like:
// * OK [PARSE] Unexpected characters at end of address: {SET:debug=51}
// will trigger literal fetching ({SET:debug=51} !== int )
if (is_numeric($iLit)) {
$data[] = $read;
$sLiteral = fread($imap_stream,$iLit);
if ($sLiteral === false) { /* error */
$read = false;
break 3; /* while switch while */
}
$data[] = $sLiteral;
$data[] = sqimap_fgets($imap_stream);
} else {
$data[] = $read;
}
} else {
$data[] = $read;
}
$read = sqimap_fgets($imap_stream);
if ($read === false) {
break 3; /* while switch while */
} else if ($read{0} == '*') {
break;
}
$s = substr($read,-3);
} while ($s === "}\r\n");
break 1;
}
break;
} // end case '*'
} // end switch
} // end while
/* error processing in case $read is false */
if ($read === false) {
unset($data);
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Connection dropped by IMAP server.") .
"</b><br />\n";
$cmd = explode(' ',$query);
$cmd = strtolower($cmd[0]);
if ($query != '' && $cmd != 'login') {
$string .= ("Query:") . ' '. htmlspecialchars($query)
. '<br />' . "</font><br />\n";
}
error_box($string,$color);
exit;
}
/* Set $resultlist array */
if (!empty($data)) {
$resultlist[] = $data;
}
elseif (empty($resultlist)) {
$resultlist[] = array();
}
/* Return result or handle errors */
if ($handle_errors == false) {
return( $resultlist );
}
switch ($response) {
case 'OK':
return $resultlist;
break;
case 'NO':
/* ignore this error from M$ exchange, it is not fatal (aka bug) */
if (strstr($message, 'command resulted in') === false) {
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Could not complete request.") .
"</b><br />\n" .
_("Query:") . ' ' .
htmlspecialchars($query) . '<br />' .
_("Reason Given:") . ' ' .
htmlspecialchars($message) . "</font><br />\n";
error_box($string,$color);
echo '</body></html>';
exit;
}
break;
case 'BAD':
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Bad or malformed request.") .
"</b><br />\n" .
_("Query:") . ' '.
htmlspecialchars($query) . '<br />' .
_("Server responded:") . ' ' .
htmlspecialchars($message) . "</font><br />\n";
error_box($string,$color);
echo '</body></html>';
exit;
case 'BYE':
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: IMAP server closed the connection.") .
"</b><br />\n" .
_("Query:") . ' '.
htmlspecialchars($query) . '<br />' .
_("Server responded:") . ' ' .
htmlspecialchars($message) . "</font><br />\n";
error_box($string,$color);
echo '</body></html>';
exit;
default:
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Unknown IMAP response.") .
"</b><br />\n" .
_("Query:") . ' '.
htmlspecialchars($query) . '<br />' .
_("Server responded:") . ' ' .
htmlspecialchars($message) . "</font><br />\n";
error_box($string,$color);
/* the error is displayed but because we don't know the reponse we
return the result anyway */
return $resultlist;
break;
}
}
function sqimap_read_data ($imap_stream, $tag_uid, $handle_errors,
&$response, &$message, $query = '',
$filter=false,$outputstream=false,$no_return=false) {
$res = sqimap_read_data_list($imap_stream, $tag_uid, $handle_errors,
$response, $message, $query,$filter,$outputstream,$no_return);
/* sqimap_read_data should be called for one response
but since it just calls sqimap_read_data_list which
handles multiple responses we need to check for that
and merge the $res array IF they are seperated and
IF it was a FETCH response. */
// if (isset($res[1]) && is_array($res[1]) && isset($res[1][0])
// && preg_match('/^\* \d+ FETCH/', $res[1][0])) {
// $result = array();
// foreach($res as $index=>$value) {
// $result = array_merge($result, $res["$index"]);
// }
// }
return $res[0];
}
/**
* 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, $onetimepad, $use_imap_tls, $imap_auth_mech;
if (!isset($onetimepad) || empty($onetimepad)) {
sqgetglobalvar('onetimepad' , $onetimepad , SQ_SESSION );
}
$imap_server_address = sqimap_get_user_server($imap_server_address, $username);
$host=$imap_server_address;
if (($use_imap_tls == true) and (check_php_version(4,3)) and (extension_loaded('openssl'))) {
/* Use TLS by prefixing "tls://" to the hostname */
$imap_server_address = 'tls://' . $imap_server_address;
}
$imap_stream = @fsockopen($imap_server_address, $imap_port, $error_number, $error_string, 15);
/* Do some error correction */
if (!$imap_stream) {
if (!$hide) {
set_up_language($squirrelmail_language, true);
require_once(SM_PATH . 'functions/display_messages.php');
logout_error( sprintf(_("Error connecting to IMAP server: %s."), $imap_server_address).
"<br />\r\n$error_number : $error_string<br />\r\n",
sprintf(_("Error connecting to IMAP server: %s."), $imap_server_address) );
}
exit;
}
$server_info = fgets ($imap_stream, 1024);
/* Decrypt the password */
$password = OneTimePadDecrypt($password, $onetimepad);
if (($imap_auth_mech == 'cram-md5') OR ($imap_auth_mech == 'digest-md5')) {
// We're using some sort of authentication OTHER than plain or login
$tag=sqimap_session_id(false);
if ($imap_auth_mech == 'digest-md5') {
$query = $tag . " AUTHENTICATE DIGEST-MD5\r\n";
} elseif ($imap_auth_mech == 'cram-md5') {
$query = $tag . " AUTHENTICATE CRAM-MD5\r\n";
}
fputs($imap_stream,$query);
$answer=sqimap_fgets($imap_stream);
// Trim the "+ " off the front
$response=explode(" ",$answer,3);
if ($response[0] == '+') {
// Got a challenge back
$challenge=$response[1];
if ($imap_auth_mech == 'digest-md5') {
$reply = digest_md5_response($username,$password,$challenge,'imap',$host);
} elseif ($imap_auth_mech == 'cram-md5') {
$reply = cram_md5_response($username,$password,$challenge);
}
fputs($imap_stream,$reply);
$read=sqimap_fgets($imap_stream);
if ($imap_auth_mech == 'digest-md5') {
// DIGEST-MD5 has an extra step..
if (substr($read,0,1) == '+') { // OK so far..
fputs($imap_stream,"\r\n");
$read=sqimap_fgets($imap_stream);
}
}
$results=explode(" ",$read,3);
$response=$results[1];
$message=$results[2];
} else {
// Fake the response, so the error trap at the bottom will work
$response="BAD";
$message='IMAP server does not appear to support the authentication method selected.';
$message .= ' Please contact your system administrator.';
}
} elseif ($imap_auth_mech == 'login') {
// this is a workaround to alert users of LOGINDISABLED, which is done "right" in
// devel but requires functions not available in stable. RFC requires us to
// not send LOGIN when LOGINDISABLED is advertised.
if(stristr($server_info, 'LOGINDISABLED')) {
$response = 'BAD';
$message = _("The IMAP server is reporting that plain text logins are disabled.").' '.
_("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").' ';
if (!$use_imap_tls) {
$message .= _("Also, the use of TLS may allow SquirrelMail to login.").' ';
}
$message .= _("Please contact your system administrator and report this error.");
} else {
// Original IMAP login code
if(sq_is8bit($username) || sq_is8bit($password)) {
$query['command'] = 'LOGIN';
$query['literal_args'][0] = $username;
$query['literal_args'][1] = $password;
$read = sqimap_run_literal_command($imap_stream, $query, false, $response, $message);
} else {
$query = 'LOGIN "' . quoteimap($username) . '"'
. ' "' . quoteimap($password) . '"';
$read = sqimap_run_command ($imap_stream, $query, false, $response, $message);
}
}
} elseif ($imap_auth_mech == 'plain') {
/* Replace this with SASL PLAIN if it ever gets implemented */
$response="BAD";
$message='SquirrelMail does not support SASL PLAIN yet. Rerun conf.pl and use login instead.';
} else {
$response="BAD";
$message="Internal SquirrelMail error - unknown IMAP authentication method chosen. Please contact the developers.";
}
/* If the connection was not successful, lets see why */
if ($response != 'OK') {
if (!$hide) {
if ($response != 'NO') {
/* "BAD" and anything else gets reported here. */
$message = htmlspecialchars($message);
set_up_language($squirrelmail_language, true);
require_once(SM_PATH . 'functions/display_messages.php');
if ($response == 'BAD') {
$string = sprintf (_("Bad request: %s")."<br />\r\n", $message);
} else {
$string = sprintf (_("Unknown error: %s") . "<br />\n", $message);
}
if (isset($read) && is_array($read)) {
$string .= '<br />' . _("Read data:") . "<br />\n";
foreach ($read as $line) {
$string .= htmlspecialchars($line) . "<br />\n";
}
}
error_box($string,$color);
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);
include_once(SM_PATH . 'functions/display_messages.php' );
sqsession_destroy();
/* terminate the session nicely */
sqimap_logout($imap_stream);
logout_error( _("Unknown user or password incorrect.") );
exit;
}
} else {
exit;
}
}
return $imap_stream;
}
/**
* Simply logs out the IMAP session
* @param stream imap_stream the IMAP connection to log out.
* @return void
*/
function sqimap_logout ($imap_stream) {
/* Logout is not valid until the server returns 'BYE'
* If we don't have an imap_stream we're already logged out */
if(isset($imap_stream) && $imap_stream)
sqimap_run_command($imap_stream, 'LOGOUT', false, $response, $message);
}
/**
* Retreive the CAPABILITY string from the IMAP server.
* If capability is set, returns only that specific capability,
* else returns array of all capabilities.
*/
function sqimap_capability($imap_stream, $capability='') {
global $sqimap_capabilities;
if (!is_array($sqimap_capabilities)) {
$read = sqimap_run_command($imap_stream, 'CAPABILITY', true, $a, $b);
$c = explode(' ', $read[0]);
for ($i=2; $i < count($c); $i++) {
$cap_list = explode('=', $c[$i]);
if (isset($cap_list[1])) {
// FIX ME. capabilities can occure multiple times.
// THREAD=REFERENCES THREAD=ORDEREDSUBJECT
$sqimap_capabilities[$cap_list[0]] = $cap_list[1];
} else {
$sqimap_capabilities[$cap_list[0]] = TRUE;
}
}
}
if ($capability) {
if (isset($sqimap_capabilities[$capability])) {
return $sqimap_capabilities[$capability];
} else {
return false;
}
}
return $sqimap_capabilities;
}
/**
* Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test
*/
function sqimap_get_delimiter ($imap_stream = false) {
global $sqimap_delimiter, $optional_delimiter;
/* Use configured delimiter if set */
if((!empty($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...
*/
$read = sqimap_run_command($imap_stream, 'NAMESPACE', true, $a, $b);
if (preg_match('/\* NAMESPACE +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL)/i', $read[0], $data)) {
if (preg_match('/^\( *\((.*)\) *\)/', $data[1], $data2)) {
$pn = $data2[1];
}
$pna = explode(')(', $pn);
while (list($k, $v) = each($pna)) {
$lst = explode('"', $v);
if (isset($lst[3])) {
$pn[$lst[1]] = $lst[3];
} else {
$pn[$lst[1]] = '';
}
}
}
$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) {
$read_ary = sqimap_run_command ($imap_stream, "EXAMINE \"$mailbox\"", false, $result, $message);
for ($i = 0; $i < count($read_ary); $i++) {
if (preg_match('/[^ ]+ +([^ ]+) +EXISTS/', $read_ary[$i], $regs)) {
return $regs[1];
}
}
return false; //"BUG! Couldn't get number of messages in $mailbox!";
}
/**
* Parses an address string.
FIXME: the original author should step up and document this - the following is a guess based on a couple simple tests of *using* the function, not knowing the code inside
*
* @param string $address Generic email address(es) in any format, including
* possible personal information as well as the
* actual address (such as "Jose" <jose@example.org>
* or "Jose" <jose@example.org>, "Keiko" <keiko@example.org>)
* @param int $max The most email addresses to parse out of the given string
*
* @return array An array with one sub-array for each address found in the
* given string. Each sub-array contains two (?) entries, the
* first containing the actual email address, the second
* containing any personal information that was in the address
* string
*
*/
function parseAddress($address, $max=0) {
$aTokens = array();
$aAddress = array();
$iCnt = strlen($address);
$aSpecials = array('(' ,'<' ,',' ,';' ,':');
$aReplace = array(' (',' <',' ,',' ;',' :');
$address = str_replace($aSpecials,$aReplace,$address);
$i = 0;
while ($i < $iCnt) {
$cChar = $address{$i};
switch($cChar)
{
case '<':
$iEnd = strpos($address,'>',$i+1);
if (!$iEnd) {
$sToken = substr($address,$i);
$i = $iCnt;
} else {
$sToken = substr($address,$i,$iEnd - $i +1);
$i = $iEnd;
}
$sToken = str_replace($aReplace, $aSpecials,$sToken);
$aTokens[] = $sToken;
break;
case '"':
$iEnd = strpos($address,$cChar,$i+1);
if ($iEnd) {
// skip escaped quotes
$prev_char = $address{$iEnd-1};
while ($prev_char === '\\' && substr($address,$iEnd-2,2) !== '\\\\') {
$iEnd = strpos($address,$cChar,$iEnd+1);
if ($iEnd) {
$prev_char = $address{$iEnd-1};
} else {
$prev_char = false;
}
}
}
if (!$iEnd) {
$sToken = substr($address,$i);
$i = $iCnt;
} else {
// also remove the surrounding quotes
$sToken = substr($address,$i+1,$iEnd - $i -1);
$i = $iEnd;
}
$sToken = str_replace($aReplace, $aSpecials,$sToken);
if ($sToken) $aTokens[] = $sToken;
break;
case '(':
$iEnd = strrpos($address,')');
if (!$iEnd || $iEnd < $i) {
$sToken = substr($address,$i);
$i = $iCnt;
} else {
$sToken = substr($address,$i,$iEnd - $i + 1);
$i = $iEnd;
}
$sToken = str_replace($aReplace, $aSpecials,$sToken);
$aTokens[] = $sToken;
break;
case ',':
case ';':
case ';':
case ' ':
$aTokens[] = $cChar;
break;
default:
$iEnd = strpos($address,' ',$i+1);
if ($iEnd) {
$sToken = trim(substr($address,$i,$iEnd - $i));
$i = $iEnd-1;
} else {
$sToken = trim(substr($address,$i));
$i = $iCnt;
}
if ($sToken) $aTokens[] = $sToken;
}
++$i;
}
$sPersonal = $sEmail = $sComment = $sGroup = '';
$aStack = $aComment = array();
foreach ($aTokens as $sToken) {
if ($max && $max == count($aAddress)) {
return $aAddress;
}
$cChar = $sToken{0};
switch ($cChar)
{
case '=':
case '"':
case ' ':
$aStack[] = $sToken;
break;
case '(':
$aComment[] = substr($sToken,1,-1);
break;
case ';':
if ($sGroup) {
$sEmail = trim(implode(' ',$aStack));
$aAddress[] = array($sGroup,$sEmail);
$aStack = $aComment = array();
$sGroup = '';
break;
}
case ',':
if (!$sEmail) {
while (count($aStack) && !$sEmail) {
$sEmail = trim(array_pop($aStack));
}
}
if (count($aStack)) {
$sPersonal = trim(implode('',$aStack));
} else {
$sPersonal = '';
}
if (!$sPersonal && count($aComment)) {
$sComment = implode(' ',$aComment);
$sPersonal .= $sComment;
}
$aAddress[] = array($sEmail,$sPersonal);
$sPersonal = $sComment = $sEmail = '';
$aStack = $aComment = array();
break;
case ':':
$sGroup = implode(' ',$aStack); break;
$aStack = array();
break;
case '<':
$sEmail = trim(substr($sToken,1,-1));
break;
case '>':
/* skip */
break;
default: $aStack[] = $sToken; break;
}
}
/* now do the action again for the last address */
if (!$sEmail) {
while (count($aStack) && !$sEmail) {
$sEmail = trim(array_pop($aStack));
}
}
if (count($aStack)) {
$sPersonal = trim(implode('',$aStack));
} else {
$sPersonal = '';
}
if (!$sPersonal && count($aComment)) {
$sComment = implode(' ',$aComment);
$sPersonal .= $sComment;
}
$aAddress[] = array($sEmail,$sPersonal);
return $aAddress;
}
/**
* Returns the number of unseen messages in this folder.
*/
function sqimap_unseen_messages ($imap_stream, $mailbox) {
$read_ary = sqimap_run_command ($imap_stream, "STATUS \"$mailbox\" (UNSEEN)", false, $result, $message);
$i = 0;
$regs = array(false, false);
while (isset($read_ary[$i])) {
if (preg_match('/UNSEEN\s+([0-9]+)/i', $read_ary[$i], $regs)) {
break;
}
$i++;
}
return $regs[1];
}
/**
* Returns the number of unseen/total messages in this folder
*/
function sqimap_status_messages ($imap_stream, $mailbox) {
$read_ary = sqimap_run_command ($imap_stream, "STATUS \"$mailbox\" (MESSAGES UNSEEN RECENT)", false, $result, $message);
$i = 0;
$messages = $unseen = $recent = false;
$regs = array(false,false);
while (isset($read_ary[$i])) {
if (preg_match('/UNSEEN\s+([0-9]+)/i', $read_ary[$i], $regs)) {
$unseen = $regs[1];
}
if (preg_match('/MESSAGES\s+([0-9]+)/i', $read_ary[$i], $regs)) {
$messages = $regs[1];
}
if (preg_match('/RECENT\s+([0-9]+)/i', $read_ary[$i], $regs)) {
$recent = $regs[1];
}
$i++;
}
return array('MESSAGES' => $messages, 'UNSEEN'=>$unseen, 'RECENT' => $recent);
}
/**
* Saves a message to a given folder -- used for saving sent messages
*/
function sqimap_append ($imap_stream, $sent_folder, $length) {
fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) {".$length."}\r\n");
$tmp = fgets ($imap_stream, 1024);
sqimap_append_checkresponse($tmp, $sent_folder);
}
function sqimap_append_done ($imap_stream, $folder='') {
fputs ($imap_stream, "\r\n");
$tmp = fgets ($imap_stream, 1024);
sqimap_append_checkresponse($tmp, $folder);
}
function sqimap_append_checkresponse($response, $folder) {
if (preg_match("/(.*)(BAD|NO)(.*)$/", $response, $regs)) {
global $squirrelmail_language, $color;
set_up_language($squirrelmail_language);
require_once(SM_PATH . 'functions/display_messages.php');
$reason = $regs[3];
if ($regs[2] == 'NO') {
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Could not append message to") ." $folder." .
"</b><br />\n" .
_("Server responded:") . ' ' .
$reason . "<br />\n";
if (preg_match("/(.*)(quota)(.*)$/i", $reason, $regs)) {
$string .= _("Solution:") . ' ' .
_("Remove unneccessary messages from your folders. Start with your Trash folder.")
."<br />\n";
}
$string .= "</font>\n";
error_box($string,$color);
} else {
$string = "<b><font color=\"$color[2]\">\n" .
_("ERROR: Bad or malformed request.") .
"</b><br />\n" .
_("Server responded:") . ' ' .
$reason . "</font><br />\n";
error_box($string,$color);
exit;
}
}
}
function sqimap_get_user_server ($imap_server, $username) {
if (substr($imap_server, 0, 4) != "map:") {
return $imap_server;
}
$function = substr($imap_server, 4);
return $function($username);
}
/**
* This is an example that gets IMAP servers from yellowpages (NIS).
* you can simple put map:map_yp_alias in your $imap_server_address
* in config.php use your own function instead map_yp_alias to map your
* LDAP whatever way to find the users IMAP server.
*/
function map_yp_alias($username) {
$safe_username = escapeshellarg($username);
$yp = `ypmatch $safe_username aliases`;
return chop(substr($yp, strlen($username)+1));
}
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