diff options
Diffstat (limited to 'packages/squidGuard/sgerror.php')
| -rw-r--r-- | packages/squidGuard/sgerror.php | 56 |
1 files changed, 50 insertions, 6 deletions
diff --git a/packages/squidGuard/sgerror.php b/packages/squidGuard/sgerror.php index 7e3b5c6c..8084c5c3 100644 --- a/packages/squidGuard/sgerror.php +++ b/packages/squidGuard/sgerror.php @@ -140,16 +140,24 @@ if ($url) { } # blank page - if ($url === 'blank') { + if ($url === TAG_BLANK) { echo get_page(''); } # blank image elseif ($url === TAG_BLANK_IMG) { - # -------------------------------------------------------------- - # return blank image - # -------------------------------------------------------------- - header("Content-Type: image/gif;"); // charset=windows-1251"); - echo GIF_BODY; + $msg = trim($msg); + if(strpos($msg, "maxlen_") !== false) { + $maxlen = intval(trim(str_replace("maxlen_", "", $url))); + filter_by_image_size($cl['u'], $maxlen); + exit(); + } + else { + # -------------------------------------------------------------- + # return blank image + # -------------------------------------------------------------- + header("Content-Type: image/gif;"); // charset=windows-1251"); + echo GIF_BODY; + } } # error code elseif ($err_id !== 0) { @@ -237,4 +245,40 @@ function get_about() { return implode("\n", $str); } + +function filter_by_image_size($url, $val_size) { + + # load url header + $ch = curl_init(); + curl_setopt($ch, CURLOPT_URL, $url); + curl_setopt($ch, CURLOPT_HEADER, 1); + curl_setopt($ch, CURLOPT_NOBODY, 1); + curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); + $hd = curl_exec($ch); + curl_close($ch); + + $size = 0; + $SKEY = "content-length:"; + $s_tmp = strtolower($hd); + $s_tmp = str_replace("\n", " ", $s_tmp); # replace all "\n" + if (strpos($s_tmp, $SKEY) !== false) { + $s_tmp = trim(substr($s_tmp, strpos($s_tmp, $SKEY) + strlen($SKEY))); + $s_tmp = trim(substr($s_tmp, 0, strpos($s_tmp, " "))); + if (is_numeric($s_tmp)) + $size = intval($s_tmp); + else $size = 0; + } + + # === check url type and content size === + # redirect to specified url + if (($size !== 0) && ($size < $val_size)) { + header("HTTP/1.0"); + header("Location: $url", '', 302); + } + # return blank image + else { + header("Content-Type: image/gif;"); + echo GIF_BODY; + } +} ?>
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