Allow more advanced element focusing

[squirrelmail.git] / functions / url_parser.php

diff --git a/functions/url_parser.php b/functions/url_parser.php
index 32fdc392f04ce52c9eb92fb279e44256bcb4b28d..eecd579af67c5c54cdb5a2b3231c0d9980fdf70c 100644 (file)
--- a/functions/url_parser.php
+++ b/functions/url_parser.php
@@ -6,7 +6,7 @@
  * This code provides various string manipulation functions that are
  * used by the rest of the SquirrelMail code.
  *
- * @copyright © 1999-2006 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
@@ -35,10 +35,12 @@ function replaceBlock (&$in, $replace, $start, $end) {
  */
 /* Here's enough: */
 global $IP_RegExp_Match, $Host_RegExp_Match, $Email_RegExp_Match;
+//FIXME: these were written for use in an ereg().... they are now being used in preg()... we need to run some tests to make sure they are fully working still
 $IP_RegExp_Match = '\\[?[0-9]{1,3}(\\.[0-9]{1,3}){3}\\]?';
 $Host_RegExp_Match = '(' . $IP_RegExp_Match .
     '|[0-9a-z]([-.]?[0-9a-z])*\\.[a-z][a-z]+)';
-$atext = '([a-z0-9!#$&%*+/=?^_`{|}~-]|&)';
+// NB: the backslash in the following line escapes the forward slash, which assumes that the regular expression will be enclosed in /.../
+$atext = '([a-z0-9!#$&%*+\/=?^_`{|}~-]|&)';
 $dot_atom = $atext . '+(\.' . $atext . '+)*';
 $Email_RegExp_Match = $dot_atom . '(%' . $Host_RegExp_Match . ')?@' .
                       $Host_RegExp_Match;
@@ -55,7 +57,7 @@ function parseEmail (&$body) {
     $addresses = array();
 
     /* Find all the email addresses in the body */
-    while(eregi($Email_RegExp_Match, $sbody, $regs)) {
+    while (preg_match('/' . $Email_RegExp_Match . '/i', $sbody, $regs)) {
         $addresses[$regs[0]] = strtr($regs[0], array('&' => '&'));
         $start = strpos($sbody, $regs[0]) + strlen($regs[0]);
         $sbody = substr($sbody, $start);
@@ -133,8 +135,8 @@ function parseUrl (&$body) {
             $target_pos = strlen($check_str) + $start;
         }
 
-        /* If there was a token to replace, replace it */
-        if ($target_token == 'mailto:') {    // rfc 2368 (mailto URL)
+        // rfc 2368 (mailto URL)
+        if ($target_token == 'mailto:') {
             $target_pos += 7;    //skip mailto:
             $end = $blength;
 
@@ -144,9 +146,15 @@ function parseUrl (&$body) {
             if ((preg_match($MailTo_PReg_Match, $mailto, $regs)) && ($regs[0] != '')) {
                 //sm_print_r($regs);
                 $mailto_before = $target_token . $regs[0];
-                $mailto_params = $regs[10];
+                /**
+                 * '+' characters in a mailto URI don't need to be percent-encoded.
+                 * However, when mailto URI data is transported via HTTP, '+' must
+                 * be percent-encoded as %2B so that when the HTTP data is
+                 * percent-decoded, you get '+' back and not a space.
+                 */
+                $mailto_params = str_replace("+", "%2B", $regs[10]);
                 if ($regs[1]) {    //if there is an email addr before '?', we need to merge it with the params
-                    $to = 'to=' . $regs[1];
+                    $to = 'to=' . str_replace("+", "%2B", $regs[1]);
                     if (strpos($mailto_params, 'to=') > -1)    //already a 'to='
                         $mailto_params = str_replace('to=', $to . '%2C%20', $mailto_params);
                     else {
@@ -163,6 +171,7 @@ function parseUrl (&$body) {
             }
         }
         else
+        /* If there was a token to replace, replace it */
         if ($target_token != '') {
             /* Find the end of the URL */
             $end = $blength;
@@ -182,7 +191,7 @@ function parseUrl (&$body) {
             $url = substr($body, $target_pos, $end-$target_pos);
 
             /* Needed since lines are not passed with \n or \r */
-            while ( ereg("[,\.]$", $url) ) {
+            while ( preg_match('/[,.]$/', $url) ) {
                 $url = substr( $url, 0, -1 );
                 $end--;
             }
@@ -216,7 +225,7 @@ function getEmail($string) {
     $addresses = array();
 
     /* Find all the email addresses in the body */
-    while (eregi($Email_RegExp_Match, $string, $regs)) {
+    while (preg_match('/' . $Email_RegExp_Match . '/i', $string, $regs)) {
         $addresses[$regs[0]] = strtr($regs[0], array('&' => '&'));
         $start = strpos($string, $regs[0]) + strlen($regs[0]);
         $string = substr($string, $start);