X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=functions%2Fimap_general.php;h=131278e12da048249983740fff400a3d33130518;hb=6872a6750379b6c17cf6a6dfec6150ade78f52a0;hp=d81192a7a9a67b7000e12a15f2b39b8aefe8475c;hpb=4bc49df676b788846c6e777f929dbc742159f8d1;p=squirrelmail.git

diff --git a/functions/imap_general.php b/functions/imap_general.php
index d81192a7..131278e1 100755
--- a/functions/imap_general.php
+++ b/functions/imap_general.php
@@ -5,7 +5,7 @@
  *
  * This implements all functions that do general IMAP functions.
  *
- * @copyright © 1999-2009 The SquirrelMail Project Team
+ * @copyright 1999-2018 The SquirrelMail Project Team
  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  * @version $Id$
  * @package squirrelmail
@@ -109,6 +109,21 @@ function sqimap_run_command ($imap_stream, $query, $handle_errors, &$response,
         $message  = $message[$tag];
 
         if (!empty($read[$tag])) {
+            /* sqimap_read_data should be called for one response
+               but since it just calls sqimap_retrieve_imap_response
+               which handles multiple responses we need to check for
+               that and merge the $read[$tag] array IF they are
+               separated and IF it was a FETCH response. */
+
+            if (isset($read[$tag][1]) && is_array($read[$tag][1]) && isset($read[$tag][1][0])
+                && preg_match('/^\* \d+ FETCH/', $read[$tag][1][0])) {
+                $result = array();
+                foreach($read[$tag] as $index => $value) {
+                    $result = array_merge($result, $read[$tag]["$index"]);
+                }
+                return $result;
+            }
+
             return $read[$tag][0];
         } else {
             return $read[$tag];
@@ -334,7 +349,7 @@ function sqimap_read_data_list($imap_stream, $tag, $handle_errors,
           'sqimap_run_command or sqimap_run_command_list instead<br /><br />'.
           'The following query was issued:<br />'.
 //FIXME: NO HTML IN CORE!
-           htmlspecialchars($query) . '<br />' . "</font><br />\n";
+           sm_encode_html_special_chars($query) . '<br />' . "</font><br />\n";
     error_box($string);
     $oTemplate->display('footer.tpl');
     exit;
@@ -361,11 +376,11 @@ function sqimap_error_box($title, $query = '', $message_title = '', $message = '
     $cmd= strtolower($cmd[0]);
 
     if ($query != '' &&  $cmd != 'login')
-        $string .= _("Query:") . ' ' . htmlspecialchars($query) . '<br />';
+        $string .= _("Query:") . ' ' . sm_encode_html_special_chars($query) . '<br />';
     if ($message_title != '')
         $string .= $message_title;
     if ($message != '')
-        $string .= htmlspecialchars($message);
+        $string .= sm_encode_html_special_chars($message);
 //FIXME: NO HTML IN CORE!
     $string .= "</font><br />\n";
     if ($link != '')
@@ -395,7 +410,7 @@ function sqimap_retrieve_imap_response($imap_stream, $tag, $handle_errors,
     $read = '';
     if (!is_array($message)) $message = array();
     if (!is_array($response)) $response = array();
-    $aResponse = '';
+    $aResponse = array();
     $resultlist = array();
     $data = array();
     $sCommand = '';
@@ -601,22 +616,34 @@ function sqimap_retrieve_imap_response($imap_stream, $tag, $handle_errors,
     case 'NO':
         /* ignore this error from M$ exchange, it is not fatal (aka bug) */
         if (strstr($message[$tag], 'command resulted in') === false) {
+            sqsession_register('NO', 'IMAP_FATAL_ERROR_TYPE');
+            sqsession_register($query, 'IMAP_FATAL_ERROR_QUERY');
+            sqsession_register($message[$tag], 'IMAP_FATAL_ERROR_MESSAGE');
             sqimap_error_box(_("ERROR: Could not complete request."), $query, _("Reason Given:") . ' ', $message[$tag]);
             echo '</body></html>';
             exit;
         }
         break;
     case 'BAD':
+        sqsession_register('BAD', 'IMAP_FATAL_ERROR_TYPE');
+        sqsession_register($query, 'IMAP_FATAL_ERROR_QUERY');
+        sqsession_register($message[$tag], 'IMAP_FATAL_ERROR_MESSAGE');
         sqimap_error_box(_("ERROR: Bad or malformed request."), $query, _("Server responded:") . ' ', $message[$tag]);
 //FIXME: NO HTML IN CORE!
         echo '</body></html>';
         exit;
     case 'BYE':
+        sqsession_register('BYE', 'IMAP_FATAL_ERROR_TYPE');
+        sqsession_register($query, 'IMAP_FATAL_ERROR_QUERY');
+        sqsession_register($message[$tag], 'IMAP_FATAL_ERROR_MESSAGE');
         sqimap_error_box(_("ERROR: IMAP server closed the connection."), $query, _("Server responded:") . ' ', $message[$tag]);
 //FIXME: NO HTML IN CORE!
         echo '</body></html>';
         exit;
     default:
+        sqsession_register('UNKNOWN', 'IMAP_FATAL_ERROR_TYPE');
+        sqsession_register($query, 'IMAP_FATAL_ERROR_QUERY');
+        sqsession_register($message[$tag], 'IMAP_FATAL_ERROR_MESSAGE');
         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 */
@@ -655,10 +682,12 @@ function sqimap_read_data ($imap_stream, $tag_uid, $handle_errors,
  * @param int port port number to connect to
  * @param integer $tls whether to use plain text(0), TLS(1) or STARTTLS(2) when connecting.
  *  Argument was boolean before 1.5.1.
+ * @param array $stream_options Stream context options, see config_local.php
+ *                           for more details (OPTIONAL)
  * @return imap-stream resource identifier
  * @since 1.5.0 (usable only in 1.5.1 or later)
  */
-function sqimap_create_stream($server,$port,$tls=0) {
+function sqimap_create_stream($server,$port,$tls=0,$stream_options=array()) {
     global $squirrelmail_language;
 
     if (strstr($server,':') && ! preg_match("/^\[.*\]$/",$server)) {
@@ -666,10 +695,23 @@ function sqimap_create_stream($server,$port,$tls=0) {
         $server = '['.$server.']';
     }
 
+    // NB: Using "ssl://" ensures the highest possible TLS version
+    // will be negotiated with the server (whereas "tls://" only
+    // uses TLS version 1.0)
+    //
     if ($tls == 1) {
         if ((check_php_version(4,3)) and (extension_loaded('openssl'))) {
-            /* Use TLS by prefixing "tls://" to the hostname */
-            $server = 'tls://' . $server;
+            if (function_exists('stream_socket_client')) {
+                $server_address = 'ssl://' . $server . ':' . $port;
+                $ssl_context = @stream_context_create($stream_options);
+                $connect_timeout = ini_get('default_socket_timeout');
+                // null timeout is broken
+                if ($connect_timeout == 0)
+                    $connect_timeout = 15;
+                $imap_stream = @stream_socket_client($server_address, $error_number, $error_string, $connect_timeout, STREAM_CLIENT_CONNECT, $ssl_context);
+            } else {
+                $imap_stream = @fsockopen('ssl://' . $server, $port, $error_number, $error_string, 15);
+            }
         } else {
             require_once(SM_PATH . 'functions/display_messages.php');
             logout_error( sprintf(_("Error connecting to IMAP server: %s."), $server).
@@ -679,9 +721,10 @@ function sqimap_create_stream($server,$port,$tls=0) {
                 _("Please contact your system administrator and report this error."),
                           sprintf(_("Error connecting to IMAP server: %s."), $server));
         }
+    } else {
+        $imap_stream = @fsockopen($server, $port, $error_number, $error_string, 15);
     }
 
-    $imap_stream = @fsockopen($server, $port, $error_number, $error_string, 15);
 
     /* Do some error correction */
     if (!$imap_stream) {
@@ -779,13 +822,16 @@ function sqimap_create_stream($server,$port,$tls=0) {
  *                  1 = show no errors (just exit)
  *                  2 = show no errors (return FALSE)
  *                  3 = show no errors (return error string)
+ * @param array $stream_options Stream context options, see config_local.php
+ *                           for more details (OPTIONAL)
  * @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, $hide) {
+function sqimap_login ($username, $password, $imap_server_address,
+                       $imap_port, $hide, $stream_options=array()) {
     global $color, $squirrelmail_language, $onetimepad, $use_imap_tls,
-           $imap_auth_mech, $sqimap_capabilities;
+           $imap_auth_mech, $sqimap_capabilities, $display_imap_login_error;
 
     // Note/TODO: This hack grabs the $authz argument from the session. In the short future,
     // a new argument in function sqimap_login() will be used instead.
@@ -831,7 +877,7 @@ function sqimap_login ($username, $password, $imap_server_address, $imap_port, $
     $host = $imap_server_address;
     $imap_server_address = sqimap_get_user_server($imap_server_address, $username);
 
-    $imap_stream = sqimap_create_stream($imap_server_address,$imap_port,$use_imap_tls);
+    $imap_stream = sqimap_create_stream($imap_server_address,$imap_port,$use_imap_tls,$stream_options);
 
     if (($imap_auth_mech == 'cram-md5') OR ($imap_auth_mech == 'digest-md5')) {
         // We're using some sort of authentication OTHER than plain or login
@@ -926,7 +972,7 @@ function sqimap_login ($username, $password, $imap_server_address, $imap_port, $
 //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);
+                $message = sm_encode_html_special_chars($message);
                 set_up_language($squirrelmail_language, true);
                 if ($response == 'BAD') {
                     if ($hide == 3) return sprintf(_("Bad request: %s"), $message);
@@ -938,7 +984,7 @@ function sqimap_login ($username, $password, $imap_server_address, $imap_port, $
                 if (isset($read) && is_array($read)) {
                     $string .= '<br />' . _("Read data:") . "<br />\n";
                     foreach ($read as $line) {
-                        $string .= htmlspecialchars($line) . "<br />\n";
+                        $string .= sm_encode_html_special_chars($line) . "<br />\n";
                     }
                 }
                 error_box($string);
@@ -960,8 +1006,30 @@ function sqimap_login ($username, $password, $imap_server_address, $imap_port, $
 
                 /* terminate the session nicely */
                 sqimap_logout($imap_stream);
-                if ($hide == 3) return _("Unknown user or password incorrect.");
-                logout_error( _("Unknown user or password incorrect.") );
+
+                // determine what error message to use
+                //
+                $fail_msg = _("Unknown user or password incorrect.");
+                if ($display_imap_login_error) {
+                    // See if there is an error message from the server
+                    // Skip any rfc5530 response code: '[something]' at the
+                    // start of the message
+                    if (!empty($message)
+                     && $message{0} == '['
+                     && ($end = strstr($message, ']'))
+                     && $end != ']') {
+                        $message = substr($end, 1);
+                    }
+                    // Remove surrounding spaces and if there
+                    // is anything left, display that as the
+                    // error message:
+                    $message = trim($message);
+                    if (strlen($message))
+                        $fail_msg = _($message);
+                }
+
+                if ($hide == 3) return $fail_msg;
+                logout_error($fail_msg);
                 exit;
             }
         } else {
@@ -995,8 +1063,10 @@ function sqimap_login ($username, $password, $imap_server_address, $imap_port, $
 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) && $imap_stream)
+    if(isset($imap_stream) && $imap_stream) {
         sqimap_run_command($imap_stream, 'LOGOUT', false, $response, $message);
+        fclose($imap_stream);
+    }
 }
 
 /**
@@ -1064,7 +1134,7 @@ function sqimap_get_delimiter ($imap_stream = false) {
 
     /* Do some caching here */
     if (!$sqimap_delimiter) {
-        if (sqimap_capability($imap_stream, 'NAMESPACE')) {
+        if (sqimap_capability($imap_stream, 'NAMESPACE')
             /*
              * According to something that I can't find, this is supposed to work on all systems
              * OS: This won't work in Courier IMAP.
@@ -1074,22 +1144,21 @@ function sqimap_get_delimiter ($imap_stream = false) {
              *
              * 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)) {
-                if (eregi('^\\( *\\((.*)\\) *\\)', $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]] = '';
-                    }
+         && ($read = sqimap_run_command($imap_stream, 'NAMESPACE', true, $a, $b))
+         && preg_match('/\* NAMESPACE +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL) +(\( *\(.+\) *\)|NIL)/i', $read[0], $data)
+         && preg_match('/^\( *\((.*)\) *\)/', $data[1], $data2)) {
+            $pn = $data2[1];
+            $pna = explode(')(', $pn);
+            $delnew = array();
+            while (list($k, $v) = each($pna)) {
+                $lst = explode('"', $v);
+                if (isset($lst[3])) {
+                    $delnew[$lst[1]] = $lst[3];
+                } else {
+                    $delnew[$lst[1]] = '';
                 }
             }
-            $sqimap_delimiter = $pn[0];
+            $sqimap_delimiter = array_shift($delnew);
         } else {
             fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
             $read = sqimap_read_data($imap_stream, '.', true, $a, $b);
@@ -1138,7 +1207,7 @@ function sqimap_parse_namespace(&$input) {
     $ns_strings = array(1=>'personal', 2=>'users', 3=>'shared');
     $namespace = array();
 
-    if(ereg('NAMESPACE (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL)', $input, $regs) !== false) {
+    if (preg_match('/NAMESPACE (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL) (\(\(.*\)\)|NIL)/', $input, $regs)) {
         for($i=1; $i<=3; $i++) {
             if($regs[$i] == 'NIL') {
                 $namespace[$ns_strings[$i]] = array();
@@ -1174,7 +1243,7 @@ function sqimap_parse_namespace(&$input) {
  */
 function sqimap_encode_mailbox_name($what)
 {
-    if (ereg("[\"\\\r\n]", $what))
+    if (preg_match('/["\\\r\n]/', $what))
         return '{' . strlen($what) . "}\r\n" . $what;        /* 4.3 literal form */
     return '"' . $what . '"';        /* 4.3 quoted string form */
 }
@@ -1436,6 +1505,7 @@ function sqimap_get_user_server ($imap_server, $username) {
  * @since 1.3.0
  */
 function map_yp_alias($username) {
-   $yp = `ypmatch $username aliases`;
+   $safe_username = escapeshellarg($username);
+   $yp = `ypmatch $safe_username aliases`;
    return chop(substr($yp, strlen($username)+1));
 }