/**
* imap_general.php
*
- * Copyright (c) 1999-2004 The SquirrelMail Project Team
- * Licensed under the GNU GPL. For full terms see the file COPYING.
- *
- * This implements all functions that do general imap functions.
+ * This implements all functions that do general IMAP functions.
*
+ * @copyright © 1999-2006 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id$
* @package squirrelmail
* @subpackage imap
*/
/** Includes.. */
-require_once(SM_PATH . 'functions/page_header.php');
-require_once(SM_PATH . 'functions/auth.php');
+
+require_once(SM_PATH . 'functions/rfc822address.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
+ * @param bool $unique_id (since 1.3.0) controls use of unique
+ * identifiers/message sequence numbers in IMAP commands. See IMAP
+ * rfc 'UID command' chapter.
* @return string IMAP session id of the form 'A000'.
+ * @since 1.2.0
*/
function sqimap_session_id($unique_id = FALSE) {
static $sqimap_session_id = 1;
/**
* Both send a command and accept the result from the command.
* This is to allow proper session number handling.
+ * @param stream $imap_stream imap connection resource
+ * @param string $query imap command
+ * @param boolean $handle_errors see sqimap_retrieve_imap_response()
+ * @param array $response
+ * @param array $message
+ * @param boolean $unique_id (since 1.3.0) see sqimap_session_id().
+ * @return mixed returns false on imap error. displays error message
+ * if imap stream is not available.
+ * @since 1.2.3
*/
function sqimap_run_command_list ($imap_stream, $query, $handle_errors, &$response, &$message, $unique_id = false) {
if ($imap_stream) {
} 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 imapstream.") .
+ $string = "<b><font color=\"$color[2]\">\n" .
+ _("ERROR: No available IMAP stream.") .
"</b></font>\n";
- error_box($string,$color);
+ error_box($string);
return false;
}
}
+/**
+ * @param stream $imap_stream imap connection resource
+ * @param string $query imap command
+ * @param boolean $handle_errors see sqimap_retrieve_imap_response()
+ * @param array $response empty string, if return = false
+ * @param array $message empty string, if return = false
+ * @param boolean $unique_id (since 1.3.0) see sqimap_session_id()
+ * @param boolean $filter (since 1.4.1 and 1.5.0) see sqimap_fread()
+ * @param mixed $outputstream (since 1.4.1 and 1.5.0) see sqimap_fread()
+ * @param boolean $no_return (since 1.4.1 and 1.5.0) see sqimap_fread()
+ * @return mixed returns false on imap error. displays error message
+ * if imap stream is not available.
+ * @since 1.2.3
+ */
function sqimap_run_command ($imap_stream, $query, $handle_errors, &$response,
&$message, $unique_id = false,$filter=false,
$outputstream=false,$no_return=false) {
$read = sqimap_read_data ($imap_stream, $tag, $handle_errors, $response,
$message, $query,$filter,$outputstream,$no_return);
- if (empty($read)) { //Imap server dropped its connection
+ if (empty($read)) { //IMAP server dropped its connection
$response = '';
$message = '';
return false;
} 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 imapstream.") .
+ $string = "<b><font color=\"$color[2]\">\n" .
+ _("ERROR: No available IMAP stream.") .
"</b></font>\n";
- error_box($string,$color);
+ error_box($string);
return false;
}
}
+/**
+ * @param mixed $new_query
+ * @param string $tag
+ * @param array $aQuery
+ * @param boolean $unique_id see sqimap_session_id()
+ * @since 1.5.0
+ */
function sqimap_prepare_pipelined_query($new_query,&$tag,&$aQuery,$unique_id) {
$sid = sqimap_session_id($unique_id);
$tag_uid_a = explode(' ',trim($sid));
$aQuery[$tag] = $query;
}
+/**
+ * @param stream $imap_stream imap stream
+ * @param array $aQueryList
+ * @param boolean $handle_errors
+ * @param array $aServerResponse
+ * @param array $aServerMessage
+ * @param boolean $unique_id see sqimap_session_id()
+ * @param boolean $filter see sqimap_fread()
+ * @param mixed $outputstream see sqimap_fread()
+ * @param boolean $no_return see sqimap_fread()
+ * @since 1.5.0
+ */
function sqimap_run_pipelined_command ($imap_stream, $aQueryList, $handle_errors,
&$aServerResponse, &$aServerMessage, $unique_id = false,
$filter=false,$outputstream=false,$no_return=false) {
$aResponse = false;
/*
- Do not fire all calls at once to the imap-server but split the calls up
+ Do not fire all calls at once to the IMAP server but split the calls up
in portions of $iChunkSize. If we do not do that I think we misbehave as
- IMAP client or should handle BYE calls if the IMAP-server drops the
+ IMAP client or should handle BYE calls if the IMAP server drops the
connection because the number of queries is to large. This isn't tested
but a wild guess how it could work in the field.
}
/**
- * Custom fgets function: gets a line from the IMAP-server,
+ * 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
+ * @param stream $imap_stream the stream to read from
* @return string a line
+ * @since 1.2.8
*/
function sqimap_fgets($imap_stream) {
$read = '';
return $results;
}
+/**
+ * @param stream $imap_stream
+ * @param integer $iSize
+ * @param boolean $filter
+ * @param mixed $outputstream stream or 'php://stdout' string
+ * @param boolean $no_return controls data returned by function
+ * @return string
+ * @since 1.4.1
+ */
function sqimap_fread($imap_stream,$iSize,$filter=false,
$outputstream=false, $no_return=false) {
if (!$filter || !$outputstream) {
if ($iRemaining < $iBufferSize) {
$iBufferSize = $iRemaining;
}
- if (!$sRead) {
+ if ($sRead == '') {
$results = false;
break;
}
- if ($sReadRem) {
+ if ($sReadRem != '') {
$sRead = $sReadRem . $sRead;
$sReadRem = '';
}
- if ($filter && $sRead) {
+ if ($filter && $sRead != '') {
// in case the filter is base64 decoding we return a remainder
$sReadRem = $filter($sRead);
}
- if ($outputstream && $sRead) {
+ if ($outputstream && $sRead != '') {
if (is_resource($outputstream)) {
fwrite($outputstream,$sRead);
} else if ($outputstream == 'php://stdout') {
/**
* Obsolete function, inform plugins that use it
- * @deprecated use sqimap_run_command or sqimap_run_command_list instead
+ * @param stream $imap_stream
+ * @param string $tag
+ * @param boolean $handle_errors
+ * @param array $response
+ * @param array $message
+ * @param string $query
+ * @since 1.1.3
+ * @deprecated (since 1.5.0) use sqimap_run_command or sqimap_run_command_list instead
*/
function sqimap_read_data_list($imap_stream, $tag, $handle_errors,
&$response, &$message, $query = '') {
- global $color, $squirrelmail_language;
+ global $color, $oTemplate, $squirrelmail_language;
set_up_language($squirrelmail_language);
- require_once(SM_PATH . 'functions/display_messages.php');
- $string = "<b><font color=$color[2]>\n" .
- _("ERROR : Bad function call.") .
- "</b><br>\n" .
+ $string = "<b><font color=\"$color[2]\">\n" .
+ _("ERROR: Bad function call.") .
+ "</b><br />\n" .
_("Reason:") . ' '.
- 'There is a plugin installed which make use of the <br>' .
- 'SquirrelMail internal function sqimap_read_data_list.<br>'.
- 'Please adapt the installed plugin and let it use<br>'.
- 'sqimap_run_command or sqimap_run_command_list instead<br><br>'.
- 'The following query was issued:<br>'.
- htmlspecialchars($query) . '<br>' . "</font><br>\n";
- error_box($string,$color);
- echo '</body></html>';
+ 'There is a plugin installed which make use of the <br />' .
+ 'SquirrelMail internal function sqimap_read_data_list.<br />'.
+ 'Please adapt the installed plugin and let it use<br />'.
+ 'sqimap_run_command or sqimap_run_command_list instead<br /><br />'.
+ 'The following query was issued:<br />'.
+ htmlspecialchars($query) . '<br />' . "</font><br />\n";
+ error_box($string);
+ $oTemplate->display('footer.tpl');
exit;
}
/**
- * Function to display an error related to an IMAP-query.
+ * Function to display an error related to an IMAP query.
* @param string title the caption of the error box
* @param string query the query that went wrong
* @param string message_title optional message title
* @param string message optional error message
* @param string $link an optional link to try again
* @return void
+ * @since 1.5.0
*/
function sqimap_error_box($title, $query = '', $message_title = '', $message = '', $link = '')
{
global $color, $squirrelmail_language;
set_up_language($squirrelmail_language);
- require_once(SM_PATH . 'functions/display_messages.php');
- $string = "<font color=$color[2]><b>\n" . $title . "</b><br>\n";
+ $string = "<font color=\"$color[2]\"><b>\n" . $title . "</b><br />\n";
$cmd = explode(' ',$query);
$cmd= strtolower($cmd[0]);
if ($query != '' && $cmd != 'login')
- $string .= _("Query:") . ' ' . htmlspecialchars($query) . '<br>';
+ $string .= _("Query:") . ' ' . htmlspecialchars($query) . '<br />';
if ($message_title != '')
$string .= $message_title;
if ($message != '')
$string .= htmlspecialchars($message);
- $string .= "</font><br>\n";
+ $string .= "</font><br />\n";
if ($link != '')
$string .= $link;
- error_box($string,$color);
+ error_box($string);
}
/**
* 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.
+ * @param stream $imap_stream imap stream
+ * @param string $tag
+ * @param boolean $handle_errors handle errors internally or send them in $response and $message.
+ * @param array $response
+ * @param array $message
+ * @param string $query command that can be printed if something fails
+ * @param boolean $filter see sqimap_fread()
+ * @param mixed $outputstream see sqimap_fread()
+ * @param boolean $no_return see sqimap_fread()
+ * @since 1.5.0
*/
function sqimap_retrieve_imap_response($imap_stream, $tag, $handle_errors,
&$response, &$message, $query = '',
$aResponse = '';
$resultlist = array();
$data = array();
+ $sCommand = '';
+ if (preg_match("/^(\w+)\s*/",$query,$aMatch)) {
+ $sCommand = strtoupper($aMatch[1]);
+ } else {
+ // error reporting (shouldn't happen)
+ }
$read = sqimap_fgets($imap_stream);
- $i = $k = 0;
+ $i = 0;
while ($read) {
$char = $read{0};
switch ($char)
}
$read = sqimap_fgets($imap_stream);
if ($read === false) { /* error */
- break 3; /* switch switch while */
+ break 2; /* switch while */
}
break;
} // end case $tag{0}
case '*':
{
- if (preg_match('/^\*\s\d+\sFETCH/',$read)) {
+ if (($sCommand == "FETCH" || $sCommand == "STORE") && preg_match('/^\*\s\d+\sFETCH/',$read)) {
/* check for literal */
$s = substr($read,-3);
$fetch_data = array();
if ($s === "}\r\n") {
$j = strrpos($read,'{');
$iLit = substr($read,$j+1,-3);
- $data[] = $read;
- $sLiteral = fread($imap_stream,$iLit);
- if ($sLiteral === false) { /* error */
- $read = false;
- break 3; /* while switch while */
+ // check for numeric value to avoid that untagged responses like:
+ // * OK [PARSE] Unexpected characters at end of address: {SET:debug=51}
+ // will trigger literal fetching ({SET:debug=51} !== int )
+ if (is_numeric($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;
}
- $data[] = $sLiteral;
- $data[] = sqimap_fgets($imap_stream);
} else {
$data[] = $read;
}
if (!$handle_errors) {
$query = '';
}
- sqimap_error_box(_("ERROR : Imap server closed the connection."), $query, _("Server responded:"),$sResponse);
+ sqimap_error_box(_("ERROR: IMAP server closed the connection."), $query, _("Server responded:"),$sResponse);
echo '</body></html>';
exit;
} else if ($handle_errors) {
unset($data);
- sqimap_error_box(_("ERROR : Connection dropped by imap-server."), $query);
+ sqimap_error_box(_("ERROR: Connection dropped by IMAP server."), $query);
exit;
}
}
case 'NO':
/* ignore this error from M$ exchange, it is not fatal (aka bug) */
if (strstr($message[$tag], 'command resulted in') === false) {
- sqimap_error_box(_("ERROR : Could not complete request."), $query, _("Reason Given: "), $message[$tag]);
+ sqimap_error_box(_("ERROR: Could not complete request."), $query, _("Reason Given:") . ' ', $message[$tag]);
echo '</body></html>';
exit;
}
break;
case 'BAD':
- sqimap_error_box(_("ERROR : Bad or malformed request."), $query, _("Server responded: "), $message[$tag]);
+ sqimap_error_box(_("ERROR: Bad or malformed request."), $query, _("Server responded:") . ' ', $message[$tag]);
echo '</body></html>';
exit;
case 'BYE':
- sqimap_error_box(_("ERROR : Imap server closed the connection."), $query, _("Server responded: "), $message[$tag]);
+ sqimap_error_box(_("ERROR: IMAP server closed the connection."), $query, _("Server responded:") . ' ', $message[$tag]);
echo '</body></html>';
exit;
default:
- sqimap_error_box(_("ERROR : Unknown imap response."), $query, _("Server responded: "), $message[$tag]);
+ sqimap_error_box(_("ERROR: Unknown IMAP response."), $query, _("Server responded:") . ' ', $message[$tag]);
/* the error is displayed but because we don't know the reponse we
return the result anyway */
return $aResponse;
}
}
+/**
+ * @param stream $imap_stream imap string
+ * @param string $tag_uid
+ * @param boolean $handle_errors
+ * @param array $response
+ * @param array $message
+ * @param string $query (since 1.2.5)
+ * @param boolean $filter (since 1.4.1) see sqimap_fread()
+ * @param mixed $outputstream (since 1.4.1) see sqimap_fread()
+ * @param boolean $no_return (since 1.4.1) see sqimap_fread()
+ */
function sqimap_read_data ($imap_stream, $tag_uid, $handle_errors,
&$response, &$message, $query = '',
$filter=false,$outputstream=false,$no_return=false) {
/**
* Connects to the IMAP server and returns a resource identifier for use with
- * the other SquirrelMail IMAP functions. Does NOT login!
+ * the other SquirrelMail IMAP functions. Does NOT login!
* @param string server hostname of IMAP server
* @param int port port number to connect to
- * @param bool tls whether to use TLS when connecting.
+ * @param integer $tls whether to use plain text(0), TLS(1) or STARTTLS(2) when connecting.
+ * Argument was boolean before 1.5.1.
* @return imap-stream resource identifier
+ * @since 1.5.0 (usable only in 1.5.1 or later)
*/
-function sqimap_create_stream($server,$port,$tls=false) {
- global $username, $use_imap_tls;
+function sqimap_create_stream($server,$port,$tls=0) {
+ global $squirrelmail_language;
+
+ if (strstr($server,':') && ! preg_match("/^\[.*\]$/",$server)) {
+ // numerical IPv6 address must be enclosed in square brackets
+ $server = '['.$server.']';
+ }
- if ($tls == true) {
+ if ($tls == 1) {
if ((check_php_version(4,3)) and (extension_loaded('openssl'))) {
/* Use TLS by prefixing "tls://" to the hostname */
$server = 'tls://' . $server;
} else {
require_once(SM_PATH . 'functions/display_messages.php');
- $string = "Unable to connect to IMAP server!<br>TLS is enabled, but this " .
- "version of PHP does not support TLS sockets, or is missing the openssl " .
- "extension.<br><br>Please contact your system administrator.";
- logout_error($string,$color);
+ logout_error( sprintf(_("Error connecting to IMAP server: %s."), $server).
+ '<br />'.
+ _("TLS is enabled, but this version of PHP does not support TLS sockets, or is missing the openssl extension.").
+ '<br /><br />'.
+ _("Please contact your system administrator and report this error."),
+ sprintf(_("Error connecting to IMAP server: %s."), $server));
}
}
- $imap_stream = fsockopen($server, $port, $error_number, $error_string, 15);
+ $imap_stream = @fsockopen($server, $port, $error_number, $error_string, 15);
/* Do some error correction */
if (!$imap_stream) {
set_up_language($squirrelmail_language, true);
require_once(SM_PATH . 'functions/display_messages.php');
- $string = sprintf (_("Error connecting to IMAP server: %s.") .
- "<br>\r\n", $server) .
- "$error_number : $error_string<br>\r\n";
- logout_error($string,$color);
+ logout_error( sprintf(_("Error connecting to IMAP server: %s."), $server).
+ "<br />\r\n$error_number : $error_string<br />\r\n",
+ sprintf(_("Error connecting to IMAP server: %s."), $server) );
exit;
}
$server_info = fgets ($imap_stream, 1024);
+
+ /**
+ * Implementing IMAP STARTTLS (rfc2595) in php 5.1.0+
+ * http://www.php.net/stream-socket-enable-crypto
+ */
+ if ($tls === 2) {
+ if (function_exists('stream_socket_enable_crypto')) {
+ // check starttls capability, don't use cached capability version
+ if (! sqimap_capability($imap_stream, 'STARTTLS', false)) {
+ // imap server does not declare starttls support
+ sqimap_error_box(sprintf(_("Error connecting to IMAP server: %s."), $server),
+ '','',
+ _("IMAP STARTTLS is enabled in SquirrelMail configuration, but used IMAP server does not support STARTTLS."));
+ exit;
+ }
+
+ // issue starttls command and check response
+ sqimap_run_command($imap_stream, 'STARTTLS', false, $starttls_response, $starttls_message);
+ // check response
+ if ($starttls_response!='OK') {
+ // starttls command failed
+ sqimap_error_box(sprintf(_("Error connecting to IMAP server: %s."), $server),
+ 'STARTTLS',
+ _("Server replied:") . ' ',
+ $starttls_message);
+ exit();
+ }
+
+ // start crypto on connection. suppress function errors.
+ if (@stream_socket_enable_crypto($imap_stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
+ // starttls was successful
+
+ /**
+ * RFC 2595 requires to discard CAPABILITY information after successful
+ * STARTTLS command. We don't follow RFC, because SquirrelMail stores CAPABILITY
+ * information only after successful login (src/redirect.php) and cached information
+ * is used only in other php script connections after successful STARTTLS. If script
+ * issues sqimap_capability() call before sqimap_login() and wants to get initial
+ * capability response, script should set third sqimap_capability() argument to false.
+ */
+ //sqsession_unregister('sqimap_capabilities');
+ } else {
+ /**
+ * stream_socket_enable_crypto() call failed. Possible issues:
+ * - broken ssl certificate (uw drops connection, error is in syslog mail facility)
+ * - some ssl error (can reproduce with STREAM_CRYPTO_METHOD_SSLv3_CLIENT, PHP E_WARNING
+ * suppressed in stream_socket_enable_crypto() call)
+ */
+ sqimap_error_box(sprintf(_("Error connecting to IMAP server: %s."), $server),
+ '','',
+ _("Unable to start TLS."));
+ /**
+ * Bug: stream_socket_enable_crypto() does not register SSL errors in
+ * openssl_error_string() or stream notification wrapper and displays
+ * them in E_WARNING level message. It is impossible to retrieve error
+ * message without own error handler.
+ */
+ exit;
+ }
+ } else {
+ // php install does not support stream_socket_enable_crypto() function
+ sqimap_error_box(sprintf(_("Error connecting to IMAP server: %s."), $server),
+ '','',
+ _("IMAP STARTTLS is enabled in SquirrelMail configuration, but used PHP version does not support functions that allow to enable encryption on open socket."));
+ exit;
+ }
+ }
return $imap_stream;
}
/**
- * Logs the user into the imap server. If $hide is set, no error messages
- * will be displayed. This function returns the imap connection handle.
+ * Logs the user into the IMAP server. If $hide is set, no error messages
+ * will be displayed (if set to 1, just exits, if set to 2, returns FALSE).
+ * This function returns the IMAP connection handle.
+ * @param string $username user name
+ * @param string $password password encrypted with onetimepad. Since 1.5.2
+ * function can use internal password functions, if parameter is set to
+ * boolean false.
+ * @param string $imap_server_address address of imap server
+ * @param integer $imap_port port of imap server
+ * @param int $hide controls display connection errors:
+ * 0 = do not hide
+ * 1 = show no errors (just exit)
+ * 2 = show no errors (return FALSE)
+ * 3 = show no errors (return error string)
+ * @return mixed The IMAP connection stream, or if the connection fails,
+ * FALSE if $hide is set to 2 or an error string if $hide
+ * is set to 3.
*/
function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
global $color, $squirrelmail_language, $onetimepad, $use_imap_tls,
$imap_auth_mech, $sqimap_capabilities;
- if (!isset($onetimepad) || empty($onetimepad)) {
- sqgetglobalvar('onetimepad' , $onetimepad , SQ_SESSION );
+ // Note/TODO: This hack grabs the $authz argument from the session. In the short future,
+ // a new argument in function sqimap_login() will be used instead.
+ $authz = '';
+ global $authz;
+ sqgetglobalvar('authz' , $authz , SQ_SESSION);
+
+ if(!empty($authz)) {
+ /* authz plugin - specific:
+ * Get proxy login parameters from authz plugin configuration. If they
+ * exist, they will override the current ones.
+ * This is useful if we want to use different SASL authentication mechanism
+ * and/or different TLS settings for proxy logins. */
+ global $authz_imap_auth_mech, $authz_use_imap_tls, $authz_imapPort_tls;
+ $imap_auth_mech = !empty($authz_imap_auth_mech) ? strtolower($authz_imap_auth_mech) : $imap_auth_mech;
+ $use_imap_tls = !empty($authz_use_imap_tls)? $authz_use_imap_tls : $use_imap_tls;
+ $imap_port = !empty($authz_use_imap_tls)? $authz_imapPort_tls : $imap_port;
+
+ if($imap_auth_mech == 'login' || $imap_auth_mech == 'cram-md5') {
+ logout_error("Misconfigured Plugin (authz or equivalent):<br/>".
+ "The LOGIN and CRAM-MD5 authentication mechanisms cannot be used when attempting proxy login.");
+ exit;
+ }
+ }
+
+ /* get imap login password */
+ if ($password===false) {
+ /* standard functions */
+ $password = sqauth_read_password();
+ } else {
+ /* old way. $key must be extracted from cookie */
+ if (!isset($onetimepad) || empty($onetimepad)) {
+ sqgetglobalvar('onetimepad' , $onetimepad , SQ_SESSION );
+ }
+ /* Decrypt the password */
+ $password = OneTimePadDecrypt($password, $onetimepad);
}
+
if (!isset($sqimap_capabilities)) {
- sqgetglobalvar('sqimap_capabilities' , $capability , SQ_SESSION );
+ sqgetglobalvar('sqimap_capabilities' , $sqimap_capabilities , SQ_SESSION );
}
$host = $imap_server_address;
$imap_stream = sqimap_create_stream($imap_server_address,$imap_port,$use_imap_tls);
- /* 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
+ // 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";
// Got a challenge back
$challenge=$response[1];
if ($imap_auth_mech == 'digest-md5') {
- $reply = digest_md5_response($username,$password,$challenge,'imap',$host);
+ $reply = digest_md5_response($username,$password,$challenge,'imap',$host,$authz);
} elseif ($imap_auth_mech == 'cram-md5') {
$reply = cram_md5_response($username,$password,$challenge);
}
fputs($imap_stream,$reply);
$read=sqimap_fgets($imap_stream);
if ($imap_auth_mech == 'digest-md5') {
- // DIGEST-MD5 has an extra step..
+ // DIGEST-MD5 has an extra step..
if (substr($read,0,1) == '+') { // OK so far..
fputs($imap_stream,"\r\n");
$read=sqimap_fgets($imap_stream);
$response=$results[1];
$message=$results[2];
} else {
- // Fake the response, so the error trap at the bottom will work
+ // 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.';
$read = sqimap_run_command ($imap_stream, $query, false, $response, $message);
} elseif ($imap_auth_mech == 'plain') {
/***
- * SASL PLAIN
- *
- * RFC 2595 Chapter 6
+ * SASL PLAIN, RFC 4616 (updates 2595)
*
- * The mechanism consists of a single message from the client to the
- * server. The client sends the authorization identity (identity to
- * login as), followed by a US-ASCII NUL character, followed by the
- * authentication identity (identity whose password will be used),
- * followed by a US-ASCII NUL character, followed by the clear-text
- * password. The client may leave the authorization identity empty to
- * indicate that it is the same as the authentication identity.
- *
- **/
+ * The mechanism consists of a single message, a string of [UTF-8]
+ * encoded [Unicode] characters, from the client to the server. The
+ * client presents the authorization identity (identity to act as),
+ * followed by a NUL (U+0000) character, followed by the authentication
+ * identity (identity whose password will be used), followed by a NUL
+ * (U+0000) character, followed by the clear-text password. As with
+ * other SASL mechanisms, the client does not provide an authorization
+ * identity when it wishes the server to derive an identity from the
+ * credentials and use that as the authorization identity.
+ */
$tag=sqimap_session_id(false);
- $sasl = (isset($capability['SASL-IR']) && $capability['SASL-IR']) ? true : false;
- $auth = base64_encode("$username\0$username\0$password");
+ $sasl = (isset($sqimap_capabilities['SASL-IR']) && $sqimap_capabilities['SASL-IR']) ? true : false;
+ if(!empty($authz)) {
+ $auth = base64_encode("$username\0$authz\0$password");
+ } else {
+ $auth = base64_encode("$username\0$username\0$password");
+ }
if ($sasl) {
// IMAP Extension for SASL Initial Client Response
// <draft-siemborski-imap-sasl-initial-response-01b.txt>
$results=explode(" ",$read,3);
$response=$results[1];
$message=$results[2];
+
} 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 (!$hide) {
+ if (!$hide || $hide == 3) {
+//FIXME: UUURG... We don't want HTML in error messages, should also do html sanitizing of error messages elsewhere; should't assume output is destined for an HTML browser here
if ($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", $message);
+ if ($hide == 3) return sprintf(_("Bad request: %s"), $message);
+ $string = sprintf (_("Bad request: %s")."<br />\r\n", $message);
} else {
- $string = sprintf (_("Unknown error: %s") . "<br>\n", $message);
+ if ($hide == 3) return sprintf(_("Unknown error: %s"), $message);
+ $string = sprintf (_("Unknown error: %s") . "<br />\n", $message);
}
if (isset($read) && is_array($read)) {
- $string .= '<br>' . _("Read data:") . "<br>\n";
+ $string .= '<br />' . _("Read data:") . "<br />\n";
foreach ($read as $line) {
- $string .= htmlspecialchars($line) . "<br>\n";
+ $string .= htmlspecialchars($line) . "<br />\n";
}
}
- error_box($string,$color);
+ error_box($string);
exit;
} else {
/*
*/
set_up_language($squirrelmail_language, true);
- include_once(SM_PATH . 'functions/display_messages.php' );
sqsession_destroy();
+
+ /* terminate the session nicely */
+ sqimap_logout($imap_stream);
+ if ($hide == 3) return _("Unknown user or password incorrect.");
logout_error( _("Unknown user or password incorrect.") );
exit;
}
} else {
+ if ($hide == 2) return FALSE;
exit;
}
}
+
+ /* Special error case:
+ * Login referrals. The server returns:
+ * ? OK [REFERRAL <imap url>]
+ * Check RFC 2221 for details. Since we do not support login referrals yet
+ * we log the user out.
+ */
+ if ( stristr($message, 'REFERRAL imap') === TRUE ) {
+ sqimap_logout($imap_stream);
+ set_up_language($squirrelmail_language, true);
+ sqsession_destroy();
+ logout_error( _("Your mailbox is not located at this server. Try a different server or consult your system administrator") );
+ exit;
+ }
+
return $imap_stream;
}
/**
* Simply logs out the IMAP session
- * @param stream imap_stream the IMAP connection to log out.
+ * @param stream $imap_stream the IMAP connection to log out.
* @return void
*/
function sqimap_logout ($imap_stream) {
}
/**
- * Retreive the CAPABILITY string from the IMAP server.
+ * Retrieve the CAPABILITY string from the IMAP server.
* If capability is set, returns only that specific capability,
* else returns array of all capabilities.
+ * @param stream $imap_stream
+ * @param string $capability (since 1.3.0)
+ * @param boolean $bUseCache (since 1.5.1) Controls use of capability data stored in session
+ * @return mixed (string if $capability is set and found,
+ * false, if $capability is set and not found,
+ * array if $capability not set)
*/
-function sqimap_capability($imap_stream, $capability='') {
- global $sqimap_capabilities;
- if (!is_array($sqimap_capabilities)) {
- $read = sqimap_run_command($imap_stream, 'CAPABILITY', true, $a, $b);
+function sqimap_capability($imap_stream, $capability='', $bUseCache=true) {
+ // sqgetGlobalVar('sqimap_capabilities', $sqimap_capabilities, SQ_SESSION);
+ if (!$bUseCache || ! sqgetGlobalVar('sqimap_capabilities', $sqimap_capabilities, SQ_SESSION)) {
+ $read = sqimap_run_command($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]] = $cap_list[1];
+ if(isset($sqimap_capabilities[trim($cap_list[0])]) &&
+ !is_array($sqimap_capabilities[trim($cap_list[0])])) {
+ // Remove array key that was added in 'else' block below
+ // This is to accomodate for capabilities like:
+ // SORT SORT=MODSEQ
+ unset($sqimap_capabilities[trim($cap_list[0])]);
+ }
+ $sqimap_capabilities[trim($cap_list[0])][] = $cap_list[1];
} else {
- $sqimap_capabilities[$cap_list[0]] = TRUE;
+ if(!isset($sqimap_capabilities[trim($cap_list[0])])) {
+ $sqimap_capabilities[trim($cap_list[0])] = TRUE;
+ }
}
}
}
}
/**
- * Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test
+ * Returns the delimiter between mailboxes: INBOX/Test, or INBOX.Test
+ * @param stream $imap_stream
+ * @return string
*/
function sqimap_get_delimiter ($imap_stream = false) {
global $sqimap_delimiter, $optional_delimiter;
return $optional_delimiter;
}
+ /* Delimiter is stored in the session from redirect. Try fetching from there first */
+ if (empty($sqimap_delimiter)) {
+ sqgetGlobalVar('delimiter',$sqimap_delimiter,SQ_SESSION);
+ }
+
/* Do some caching here */
if (!$sqimap_delimiter) {
if (sqimap_capability($imap_stream, 'NAMESPACE')) {
* 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...
+ *
+ * TODO: remove this in favour of the information from sqimap_get_namespace()
*/
$read = sqimap_run_command($imap_stream, 'NAMESPACE', true, $a, $b);
if (eregi('\\* NAMESPACE +(\\( *\\(.+\\) *\\)|NIL) +(\\( *\\(.+\\) *\\)|NIL) +(\\( *\\(.+\\) *\\)|NIL)', $read[0], $data)) {
} else {
fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
$read = sqimap_read_data($imap_stream, '.', true, $a, $b);
- $read = $read['.'][0]; //sqimap_read_data() now returns a tag array of response array
+ $read = $read['.'][0]; //sqimap_read_data() now returns a tag array of response array
$quote_position = strpos ($read[0], '"');
$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
}
return $sqimap_delimiter;
}
+/**
+ * Retrieves the namespaces from the IMAP server.
+ * NAMESPACE is an IMAP extension defined in RFC 2342.
+ *
+ * @param stream $imap_stream
+ * @return array
+ */
+function sqimap_get_namespace($imap_stream) {
+ $read = sqimap_run_command($imap_stream, 'NAMESPACE', true, $a, $b);
+ return sqimap_parse_namespace($read[0]);
+}
+
+/**
+ * Parses a NAMESPACE response and returns an array with the available
+ * personal, users and shared namespaces.
+ *
+ * @param string $input
+ * @return array The returned array has the following format:
+ * <pre>
+ * array(
+ * 'personal' => array(
+ * 0 => array('prefix'=>'INBOX.','delimiter' =>'.'),
+ * 1 => ...
+ * ),
+ * 'users' => array(..
+ * ),
+ * 'shared' => array( ..
+ * )
+ * )
+ * </pre>
+ * Note that if a namespace is not defined in the server, then the corresponding
+ * array will be empty.
+ */
+function sqimap_parse_namespace(&$input) {
+ $ns_strings = array(1=>'personal', 2=>'users', 3=>'shared');
+ $namespace = array();
+
+ if(ereg('NAMESPACE (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL)', $input, $regs) !== false) {
+ for($i=1; $i<=3; $i++) {
+ if($regs[$i] == 'NIL') {
+ $namespace[$ns_strings[$i]] = array();
+ } else {
+ // Pop-out the first ( and last ) for easier parsing
+ $ns = substr($regs[$i], 1, sizeof($regs[$i])-2);
+ if($c = preg_match_all('/\((?:(.*?)\s*?)\)/', $ns, $regs2)) {
+ $namespace[$ns_strings[$i]] = array();
+ for($j=0; $j<sizeof($regs2[1]); $j++) {
+ preg_match('/"(.*)"\s+("(.*)"|NIL)/', $regs2[1][$j], $regs3);
+ $namespace[$ns_strings[$i]][$j]['prefix'] = $regs3[1];
+ if($regs3[2] == 'NIL') {
+ $namespace[$ns_strings[$i]][$j]['delimiter'] = null;
+ } else {
+ // $regs[3] is $regs[2] without the quotes
+ $namespace[$ns_strings[$i]][$j]['delimiter'] = $regs3[3];
+ }
+ unset($regs3);
+ }
+ }
+ unset($ns);
+ }
+ }
+ }
+ return($namespace);
+}
+
/**
* This encodes a mailbox name for use in IMAP commands.
- * @param string what the mailbox to encode
+ * @param string $what the mailbox to encode
* @return string the encoded mailbox string
+ * @since 1.5.0
*/
function sqimap_encode_mailbox_name($what)
{
- if (ereg("[\"\\\r\n]", $what))
- return '{' . strlen($what) . "}\r\n" . $what; /* 4.3 literal form */
- return '"' . $what . '"'; /* 4.3 quoted string form */
+ if (ereg("[\"\\\r\n]", $what))
+ return '{' . strlen($what) . "}\r\n" . $what; /* 4.3 literal form */
+ return '"' . $what . '"'; /* 4.3 quoted string form */
}
/**
* Gets the number of messages in the current mailbox.
*
* OBSOLETE use sqimap_status_messages instead.
+ * @param stream $imap_stream imap stream
+ * @param string $mailbox
+ * @deprecated
*/
function sqimap_get_num_messages ($imap_stream, $mailbox) {
- $read_ary = sqimap_run_command ($imap_stream, 'EXAMINE ' . sqimap_encode_mailbox_name($mailbox), false, $result, $message);
- for ($i = 0; $i < count($read_ary); $i++) {
- if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
- return $regs[1];
- }
- }
- return false; //"BUG! Couldn't get number of messages in $mailbox!";
+ $aStatus = sqimap_status_messages($imap_stream,$mailbox,array('MESSAGES'));
+ return $aStatus['MESSAGES'];
}
-include_once(SM_PATH . 'functions/rfc822address.php');
/**
* OBSOLETE FUNCTION should be removed after mailbox_display,
* printMessage function is adapted
+ * $addr_ar = array(), $group = '' and $host='' arguments are used in 1.4.0
+ * @param string $address
+ * @param integer $max
+ * @since 1.4.0
+ * @deprecated See Rfc822Address.php
*/
function parseAddress($address, $max=0) {
$aAddress = parseRFC822Address($address,array('limit'=> $max));
/**
* OBSOLETE FUNCTION should be removed after mailbox_display,
* printMessage function is adapted
+ *
+ * callback function used for formating of addresses array in
+ * parseAddress() function
+ * @param array $aAddr
+ * @param integer $k array key
+ * @since 1.5.1
+ * @deprecated
*/
function _adaptAddress(&$aAddr,$k) {
$sPersonal = (isset($aAddr[SQM_ADDR_PERSONAL]) && $aAddr[SQM_ADDR_PERSONAL]) ?
/**
* Returns the number of unseen messages in this folder.
* obsoleted by sqimap_status_messages !
+ * Arguments differ in 1.0.x
+ * @param stream $imap_stream
+ * @param string $mailbox
+ * @return integer
+ * @deprecated
*/
function sqimap_unseen_messages ($imap_stream, $mailbox) {
$aStatus = sqimap_status_messages($imap_stream,$mailbox,array('UNSEEN'));
/**
* Returns the status items of a mailbox.
* Default it returns MESSAGES,UNSEEN and RECENT
- * Supported status items are MESSAGES, UNSEEN, RECENT, UIDNEXT and UIDVALIDITY
+ * Supported status items are MESSAGES, UNSEEN, RECENT (since 1.4.0),
+ * UIDNEXT (since 1.5.1) and UIDVALIDITY (since 1.5.1)
+ * @param stream $imap_stream imap stream
+ * @param string $mailbox mail folder
+ * @param array $aStatusItems status items
+ * @return array
+ * @since 1.3.2
*/
function sqimap_status_messages ($imap_stream, $mailbox,
$aStatusItems = array('MESSAGES','UNSEEN','RECENT')) {
}
$i++;
}
- return array('MESSAGES' => $messages,
+
+ $status=array('MESSAGES' => $messages,
'UNSEEN'=>$unseen,
'RECENT' => $recent,
'UIDNEXT' => $uidnext,
'UIDVALIDITY' => $uidvalidity);
+
+ if (!empty($messages)) { $hook_status['MESSAGES']=$messages; }
+ if (!empty($unseen)) { $hook_status['UNSEEN']=$unseen; }
+ if (!empty($recent)) { $hook_status['RECENT']=$recent; }
+ if (!empty($hook_status)) {
+ $hook_status['MAILBOX']=$mailbox;
+ $hook_status['CALLER']='sqimap_status_messages';
+ do_hook('folder_status', $hook_status);
+ }
+ return $status;
}
/**
* Saves a message to a given folder -- used for saving sent messages
+ * @param stream $imap_stream
+ * @param string $sent_folder
+ * @param $length
+ * @return string $sid
*/
-function sqimap_append ($imap_stream, $sent_folder, $length) {
- fputs ($imap_stream, sqimap_session_id() . ' APPEND ' . sqimap_encode_mailbox_name($sent_folder) . " (\\Seen) \{$length}\r\n");
+function sqimap_append ($imap_stream, $sMailbox, $length) {
+ $sid = sqimap_session_id();
+ $query = $sid . ' APPEND ' . sqimap_encode_mailbox_name($sMailbox) . " (\\Seen) {".$length."}";
+ fputs ($imap_stream, "$query\r\n");
$tmp = fgets ($imap_stream, 1024);
+ sqimap_append_checkresponse($tmp, $sMailbox,$sid, $query);
+ return $sid;
}
-function sqimap_append_done ($imap_stream, $folder='') {
- global $squirrelmail_language, $color;
+/**
+ * @param stream imap_stream
+ * @param string $folder (since 1.3.2)
+ */
+function sqimap_append_done ($imap_stream, $sMailbox='') {
fputs ($imap_stream, "\r\n");
$tmp = fgets ($imap_stream, 1024);
- if (preg_match("/(.*)(BAD|NO)(.*)$/", $tmp, $regs)) {
- set_up_language($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 folder and 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: ") .
- $tmp . "</font><br>\n";
- error_box($string,$color);
- exit;
+ while (!sqimap_append_checkresponse($tmp, $sMailbox)) {
+ $tmp = fgets ($imap_stream, 1024);
+ }
+}
+
+/**
+ * Displays error messages, if there are errors in responses to
+ * commands issues by sqimap_append() and sqimap_append_done() functions.
+ * @param string $response
+ * @param string $sMailbox
+ * @return bool $bDone
+ * @since 1.5.1 and 1.4.5
+ */
+function sqimap_append_checkresponse($response, $sMailbox, $sid='', $query='') {
+ // static vars to keep them available when sqimap_append_done calls this function.
+ static $imapquery, $imapsid;
+
+ $bDone = false;
+
+ if ($query) {
+ $imapquery = $query;
+ }
+ if ($sid) {
+ $imapsid = $sid;
+ }
+ if ($response{0} == '+') {
+ // continuation request triggerd by sqimap_append()
+ $bDone = true;
+ } else {
+ $i = strpos($response, ' ');
+ $sRsp = substr($response,0,$i);
+ $sMsg = substr($response,$i+1);
+ $aExtra = array('MAILBOX' => $sMailbox);
+ switch ($sRsp) {
+ case '*': //untagged response
+ $i = strpos($sMsg, ' ');
+ $sRsp = strtoupper(substr($sMsg,0,$i));
+ $sMsg = substr($sMsg,$i+1);
+ if ($sRsp == 'NO' || $sRsp == 'BAD') {
+ // for the moment disabled. Enable after 1.5.1 release.
+ // Notices could give valueable information about the mailbox
+ // sqm_trigger_imap_error('SQM_IMAP_APPEND_NOTICE',$imapquery,$sRsp,$sMsg);
+ }
+ $bDone = false;
+ case $imapsid:
+ // A001 OK message
+ // $imapsid<space>$sRsp<space>$sMsg
+ $bDone = true;
+ $i = strpos($sMsg, ' ');
+ $sRsp = strtoupper(substr($sMsg,0,$i));
+ $sMsg = substr($sMsg,$i+1);
+ switch ($sRsp) {
+ case 'NO':
+ if (preg_match("/(.*)(quota)(.*)$/i", $sMsg, $aMatch)) {
+ sqm_trigger_imap_error('SQM_IMAP_APPEND_QUOTA_ERROR',$imapquery,$sRsp,$sMsg,$aExtra);
+ } else {
+ sqm_trigger_imap_error('SQM_IMAP_APPEND_ERROR',$imapquery,$sRsp,$sMsg,$aExtra);
+ }
+ break;
+ case 'BAD':
+ sqm_trigger_imap_error('SQM_IMAP_ERROR',$imapquery,$sRsp,$sMsg,$aExtra);
+ break;
+ case 'BYE':
+ sqm_trigger_imap_error('SQM_IMAP_BYE',$imapquery,$sRsp,$sMsg,$aExtra);
+ break;
+ case 'OK':
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ // should be false because of the unexpected response but i'm not sure if
+ // that will cause an endless loop in sqimap_append_done
+ $bDone = true;
}
}
+ return $bDone;
}
+/**
+ * Allows mapping of IMAP server address with custom function
+ * see map_yp_alias()
+ * @param string $imap_server imap server address or mapping
+ * @param string $username
+ * @return string
+ * @since 1.3.0
+ */
function sqimap_get_user_server ($imap_server, $username) {
if (substr($imap_server, 0, 4) != "map:") {
return $imap_server;
}
/**
- * This is an example that gets imapservers from yellowpages (NIS).
+ * 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 imapserver.
+ * LDAP whatever way to find the users IMAP server.
+ *
+ * Requires access to external ypmatch program
+ * FIXME: it can be implemented in php yp extension or pecl (since php 5.1.0)
+ * @param string $username
+ * @return string
+ * @since 1.3.0
*/
function map_yp_alias($username) {
$yp = `ypmatch $username aliases`;
return chop(substr($yp, strlen($username)+1));
}
-
-?>
projects / squirrelmail.git / blobdiff