/usr/lib/nanoweb/modules/mod_gzip.php is in nanoweb 2.2.9-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | <?php
/*
Nanoweb Gzip Transfer Encoding Support Module
=============================================
Copyright (C) 2002-2003 Vincent Negrier aka. sIX <six@aegis-corp.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# it now adds itself to the parser/filter chain
# <mario@erphesfurt·de>
*/
class mod_gzip extends pfilter {
function mod_gzip() {
$this->modtype = "core_after_pfilters";
$this->modname = "gzip content encoding support";
}
function init() {
register_filter("gzip", $this, NW_PFILTER_ALL);
}
function main() {
if ((access_query("gzipenable", 0) && $GLOBALS["gz_av"])) {
global $lf;
$this->pp = $lf;
$this->content_length = $this->pp->content_length;
$lf=$this;
}
}
function filter_func(&$lf, $args) {
global $htreq_headers, $out_add_headers, $first_chunk, $chunky;
if ($first_chunk) {
$this->gz_method = false;
foreach (array("deflate", "gzip", "compress") as $m) {
if (strpos($htreq_headers["ACCEPT-ENCODING"], $m) !== false) {
$this->gz_method = $m;
break;
}
}
if (!($this->gz_level=access_query("gziplevel", 0))) {
$this->gz_level=3;
}
$this->engaged = $this->gz_method && empty($out_add_headers["Content-Encoding"]);
$this->engaged = $this->engaged && ( !($chunky || (nw_use_chunked_encoding()==true)) || (access_query("gzipenable",0)>=2) );
}
if ($this->engaged) {
switch ($this->gz_method) {
case "deflate":
$gz_content=gzdeflate($lf, $this->gz_level);
break;
case "compress":
$gz_content=gzcompress($lf, $this->gz_level);
break;
case "gzip":
$gz_content=gzencode($lf, $this->gz_level); //(..., FORCE_DEFLATE) ??
default:
}
#techo("compressing " . strlen($lf) . " bytes using " . $this->gz_method . " level=".$this->gz_level);
if (!$chunky || isset($this->pp->content_length)) {
if (!$maxratio=(access_query("gzipmaxratio", 0)/100)) $maxratio=0.90;
if (!(strlen($gz_content)<(strlen($lf)*$maxratio))) {
return(0);
}
$this->content_length = strlen($gz_content);
}
$lf=$gz_content;
$out_add_headers["Content-Encoding"]=$this->gz_method;
}
else {
$this->content_length = $this->pp->content_length;
}
}
}
?>
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