X-Git-Url: https://vcs.fsf.org/?p=squirrelmail.git;a=blobdiff_plain;f=functions%2Fimap_general.php;h=1826d9124a4a69a5fb2881d82acfcb83bac65b21;hp=5ee384040a778464b571ddb0ee95dcf67d10facd;hb=7350889b45590aee831ba1150ee94efb95b03992;hpb=8e9e8afac7b50a90520dd86c7d8efdfd3ee62d7a

diff --git a/functions/imap_general.php b/functions/imap_general.php
index 5ee38404..1826d912 100755
--- a/functions/imap_general.php
+++ b/functions/imap_general.php
@@ -1,101 +1,211 @@
 <?php
+
    /**
-    **  imap.php
-    **
-    **  This implements all functions that do general imap functions.
-    **/
+    *   imap.php
+    *
+    *   Copyright (c) 1999-2001 The Squirrelmail Development Team
+    *   Licensed under the GNU GPL. For full terms see the file COPYING.
+    *
+    *   This implements all functions that do general imap functions.
+    *
+    *   $Id$
+    */
+
+    /**
+    * Unique SessionId
+    *
+    * Sets an unique session id in order to avoid simultanous sessions crash.
+    *
+    * @return	string	a 4 chars unique string
+    */
+    function sqimap_session_id() {
+
+        if (session_id() == '')
+            global $RememberedSessionID;
+
+            if (! isset($RememberedSessionID))
+                $RememberedSessionID = GenerateRandomString(4, '', 7);
+        else
+            $RememberedSessionID = substr(session_id(), -4);
+
+        return( $RememberedSessionID );
+   }
+
 
    /******************************************************************************
     **  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;
-
-      $read = fgets ($imap_stream, 1024);
-      $counter = 0;
-      while ((substr($read, 0, strlen("$pre OK")) != "$pre OK") &&
-             (substr($read, 0, strlen("$pre BAD")) != "$pre BAD") &&
-             (substr($read, 0, strlen("$pre NO")) != "$pre NO")) {
-         $data[$counter] = $read;
-         $read = fgets ($imap_stream, 1024);
-         $counter++;
-      }       
-      if (substr($read, 0, strlen("$pre OK")) == "$pre OK") {
-         $response = "OK";
-         $message = trim(substr($read, strlen("$pre OK"), strlen($read)));
-      }
-      else if (substr($read, 0, strlen("$pre BAD")) == "$pre BAD") {
-         $response = "BAD";
-         $message = trim(substr($read, strlen("$pre BAD"), strlen($read)));
-      }
-      else {   
-         $response = "NO";
-         $message = trim(substr($read, strlen("$pre NO"), strlen($read)));
-      }
 
-      if ($handle_errors == true) {
-         if ($response == "NO") {
-            echo "<br><b><font color=$color[2]>";
+   function sqimap_read_data_list ($imap_stream, $pre, $handle_errors,
+                                   &$response, &$message) {
+      global $color, $squirrelmail_language;
+
+      $read = '';
+      $resultlist = array();
+
+      $more_msgs = true;
+      while ($more_msgs) {
+         $data = array();
+         $total_size = 0;
+         while (strpos($read, "\n") === false) {
+            $read .= fgets($imap_stream, 9096);
+         }
+
+         if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
+            $size = $regs[1];
+         } else if (ereg("^\\* [0-9]+ FETCH", $read, $regs)) {
+            // Sizeless response, probably single-line
+            $size = -1;
+            $data[] = $read;
+            $read = fgets($imap_stream, 9096);
+         } else {
+            $size = -1;
+         }
+         while (1) {
+            while (strpos($read, "\n") === false) {
+               $read .= fgets($imap_stream, 9096);
+            }
+            // If we know the size, no need to look at the end parameters
+            if ($size > 0) {
+               if ($total_size == $size) {
+                  // We've reached the end of this 'message', switch to the next one.
+                  $data[] = $read;
+                  break;
+               } else if ($total_size > $size) {
+                  $difference = $total_size - $size;
+                  $total_size = $total_size - strlen($read);
+                  $data[] = substr ($read, 0, strlen($read)-$difference);
+                  $read = substr ($read, strlen($read)-$difference, strlen($read));
+                  break;
+               } else {
+                  $data[] = $read;
+                  $read = fgets($imap_stream, 9096);
+                  while (strpos($read, "\n") === false) {
+                      $read .= fgets($imap_stream, 9096);
+                  }
+               }
+               $total_size += strlen($read);
+            } else {
+               if (ereg("^$pre (OK|BAD|NO)(.*)", $read, $regs) ||
+                   (($size == -1) && ereg("^\\* [0-9]+ FETCH.*", $read, $regs))) {
+                  break;
+               } else {
+                  $data[] = $read;
+                  $read = fgets ($imap_stream, 9096);
+               }
+            }
+         }
+
+         while (($more_msgs = !ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) &&
+                !ereg("^\\* [0-9]+ FETCH.*", $read, $regs)) {
+            $read = fgets($imap_stream, 9096);
+         }
+         $resultlist[] = $data;
+      }
+      $response = $regs[1];
+      $message = trim($regs[2]);
+      
+      if ($handle_errors == false) { return $resultlist; }
+     
+      if ($response == '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);
+            echo "<br><b><font color=$color[2]>\n";
             echo _("ERROR : Could not complete request.");
-            echo "</b><br>";
+            echo "</b><br>\n";
             echo _("Reason Given: ");
-            echo "$message</font><br>";
-            exit;
-         } else if ($response == "BAD") {
-            echo "<br><b><font color=$color[2]>";
-            echo _("ERROR : Bad or malformed request.");
-            echo "</b><br>";
-            echo _("Server responded: ");
-            echo "$message</font><br>";
+            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;
+      return $resultlist;
    }
-   
 
+   function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
+        $res = sqimap_read_data_list($imap_stream, $pre, $handle_errors, $response, $message);
+        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;
-      $imap_stream = fsockopen ($imap_server_address, $imap_port, &$error_number, &$error_string);
+      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) {
-            echo "Error connecting to IMAP server: $imap_server_address.<br>\r\n";
+            set_up_language($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 ($imap_stream, "a001 LOGIN \"$username\" \"$password\"\r\n");
-      $read = fgets ($imap_stream, 1024);
+      fputs ($imap_stream, sqimap_session_id() . ' LOGIN "' . quoteIMAP($username) .
+         '" "' . quoteIMAP($password) . "\"\r\n");
+      $read = sqimap_read_data ($imap_stream, sqimap_session_id(), false, $response, $message);
 
       /** If the connection was not successful, lets see why **/
-      if (substr($read, 0, 7) != "a001 OK") {
+      if ($response != "OK") {
          if (!$hide) {
-            if (substr($read, 0, 8) == "a001 BAD") {
-               echo "Bad request: $read<br>\r\n";
+            if ($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 (substr($read, 0, 7) == "a001 NO") {
+            } 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>
+                     <body bgcolor="ffffff">
                         <br>
                         <center>
-                        <table width=70% noborder bgcolor=ffffff align=center>
+                        <table width="70%" noborder bgcolor="ffffff" align="center">
                            <tr>
-                              <td bgcolor=dcdcdc>
-                                 <font color=cc0000>
+                              <td bgcolor="dcdcdc">
+                                 <font color="cc0000">
                                  <center>
                                  <?php echo _("ERROR") ?>
                                  </center>
@@ -106,7 +216,7 @@
                               <td>
                                  <center>
                                  <?php echo _("Unknown user or password incorrect.") ?><br>
-                                 <a href="login.php"><?php echo _("Click here to try again") ?></a>
+                                 <a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
                                  </center>
                               </td>
                            </tr>
@@ -117,9 +227,6 @@
                <?php
                session_destroy();
                exit;
-            } else {
-               echo "Unknown error: $read<br>";
-               exit;
             }
          } else {
             exit;
@@ -136,39 +243,91 @@
     **  Simply logs out the imap session
     ******************************************************************************/
    function sqimap_logout ($imap_stream) {
-      fputs ($imap_stream, "a001 LOGOUT\r\n");
+      fputs ($imap_stream, sqimap_session_id() . " LOGOUT\r\n");
    }
 
+   function sqimap_capability($imap_stream, $capability) {
+        global $sqimap_capabilities;
+
+        if (!is_array($sqimap_capabilities)) {
+            fputs ($imap_stream, sqimap_session_id() . " CAPABILITY\r\n");
+            $read = sqimap_read_data($imap_stream, sqimap_session_id(), 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;
+            }
+        }
+        if (! isset($sqimap_capabilities[$capability]))
+        return false;
+        return $sqimap_capabilities[$capability];
+    }
 
    /******************************************************************************
     **  Returns the delimeter between mailboxes:  INBOX/Test, or INBOX.Test... 
     ******************************************************************************/
-   function sqimap_get_delimiter ($imap_stream) {
-      fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
-      $read = sqimap_read_data($imap_stream, ".", true, $a, $b);
-      $quote_position = strpos ($read[0], "\"");
-      $delim = substr ($read[0], $quote_position+1, 1);
+   function sqimap_get_delimiter ($imap_stream = false) {
 
-      return $delim;
-   }
+      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, sqimap_session_id() . " NAMESPACE\r\n");
+            $read = sqimap_read_data($imap_stream, sqimap_session_id(), 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]] = '';
+                    }
+                }
+            }
+            $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, $message);
+      fputs ($imap_stream, sqimap_session_id() . " EXAMINE \"$mailbox\"\r\n");
+      $read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
       for ($i = 0; $i < count($read_ary); $i++) {
-         if (substr(trim($read_ary[$i]), -6) == EXISTS) {
-            $array = explode (" ", $read_ary[$i]);
-            $num = $array[1];
+         if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
+            return $regs[1];
          }
       }
-      return $num;
+      return "BUG!  Couldn't get number of messages in $mailbox!";
    }
 
    
@@ -179,11 +338,13 @@
       /** Luke Ehresman <lehresma@css.tayloru.edu>
        ** <lehresma@css.tayloru.edu>
        ** lehresma@css.tayloru.edu
+       **
+       ** What about
+       **    lehresma@css.tayloru.edu (Luke Ehresman)
        **/
 
-      if (strpos($string, "<") && strpos($string, ">")) {
-         $string = substr($string, strpos($string, "<")+1);
-         $string = substr($string, 0, strpos($string, ">"));
+      if (ereg("<([^>]+)>", $string, $regs)) {
+          $string = $regs[1];
       }
       return trim($string); 
    }
@@ -197,39 +358,34 @@
     **           becomes:   lkehresman@yahoo.com
     ******************************************************************************/
    function sqimap_find_displayable_name ($string) {
-      $string = " ".trim($string);
-      if (strpos($string, "<") && strpos($string, ">")) {
-         if (strpos($string, "<") == 1) {
+      $string = ' '.trim($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);   
+            $string = substr($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) {
-      fputs ($imap_stream, "a001 SEARCH UNSEEN NOT DELETED\r\n");
-      $read_ary = sqimap_read_data ($imap_stream, "a001", true, $result, $message);
-      $unseen = false;
-      
-      if (strlen($read_ary[0]) > 10) {
-         $unseen = true;
-         $ary = explode (" ", $read_ary[0]);
-         $num_unseen = count($ary) - 2;
-      } else {
-         $unseen = false;
-         $num_unseen = 0;
-      }
-
-      return $unseen;
+   function sqimap_unseen_messages ($imap_stream, $mailbox) {
+      //fputs ($imap_stream, sqimap_session_id() . " SEARCH UNSEEN NOT DELETED\r\n");
+      fputs ($imap_stream, sqimap_session_id() . " STATUS \"$mailbox\" (UNSEEN)\r\n");
+      $read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
+      ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
+      return $regs[1];
    }
  
   
@@ -237,7 +393,7 @@
     **  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");
+      fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
       $tmp = fgets ($imap_stream, 1024);
    }