Subversion-Projekte lars-tiefland.php_share

<?php

class AutofixUrl {

  function AutofixUrl() {

  }

  function apply($url) {

    $parts = @parse_url($url);

    if ($parts === FALSE) {

      return null;

    };

    $path = isset($parts['path']) ? $parts['path'] : '/';

    /*

     * Check if path contains only RFC1738 compliant symbols and fix it

     * No graphic: 00-1F, 7F, 80-FF

     * Unsafe: 'space',<>"#%{}|\^~[]`

     * Reserved: ;/?:@=&

     *

     * Normally, slash is allowed in path part, and % may be a part of encoded character

     */

    $no_graphic_found = preg_match('/[\x00-\x1F\x7F\x80-\xFF]/', $path);

    $unsafe_found = preg_match('/[ <>\"#{}\|\^~\[\]`]/', $path);

    $unsafe_percent_found = preg_match('/%[^\dA-F]|%\d[^\dA-F]/i', $path);

    $reserved_found = preg_match('/;\?:@=&/', $path);

    if ($no_graphic_found ||

        $unsafe_found ||

        $unsafe_percent_found ||

        $reserved_found) {

      $path = join('/', array_map('rawurlencode', explode('/',$path)));

    };

    // Build updated URL

    $url_fixed = '';

    if (isset($parts['scheme'])) {

      $url_fixed .= $parts['scheme'];

      $url_fixed .= '://';

      if (isset($parts['user'])) {

        $url_fixed .= $parts['user'];

        if (isset($parts['pass'])) {

          $url_fixed .= ':';

          $url_fixed .= $parts['pass'];

        };

        $url_fixed .= '@';

      };

      if (isset($parts['host'])) {

        $url_fixed .= $parts['host'];

      };

      if (isset($parts['port'])) {

        $url_fixed .= ':';

        $url_fixed .= $parts['port'];

      };

    };

    $url_fixed .= $path;

    if (isset($parts['query'])) {

      $url_fixed .= '?';

      $url_fixed .= $parts['query'];

    };

    if (isset($parts['fragment'])) {

      $url_fixed .= '#';

      $url_fixed .= $parts['fragment'];

    };

    return $url_fixed;

  }

}

?>