<?php
/* This file handles the generation of zip file for downloads. */
include(dirname(__FILE__).'/plog-load-config.php');
if (!$config['allow_dl']) {
// ignorance is bliss
exit();
}
/*
Zip file creation class
makes zip files on the fly...
use the functions add_dir() and add_file() to build the zip file;
see example code below
by Eric Mueller
http://www.themepark.com
v1.1 9-20-01
- added comments to example
v1.0 2-5-01
initial version with:
- class appearance
- add_file() and file() methods
- gzcompress() output hacking
by Denis O.Philippov, webmaster@atlant.ru, http://www.atlant.ru
official ZIP file format: http://www.pkware.com/appnote.txt
*/
class zipfile {
var $datasec = array(); // array to store compressed data
var $ctrl_dir = array(); // central directory
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; // end of Central directory record
var $old_offset = 0;
function add_dir($name) {
// adds 'directory' to archive - do this before putting any files in directory!
// $name - name of directory... like this: 'path/'
// ...then you can add files using add_file with names like 'path/file.txt'
$name = str_replace("\\", "/", $name);
$fr = "\x50\x4b\x03\x04";
$fr .= "\x0a\x00"; // ver needed to extract
$fr .= "\x00\x00"; // gen purpose bit flag
$fr .= "\x00\x00"; // compression method
$fr .= "\x00\x00\x00\x00"; // last mod time and date
$fr .= pack("V", 0); // crc32
$fr .= pack("V", 0); // compressed filesize
$fr .= pack("V", 0); // uncompressed filesize
$fr .= pack("v", strlen($name) ); // length of pathname
$fr .= pack("v", 0 ); // extra field length
$fr .= $name;
// end of 'local file header' segment
// no 'file data' segment for path
// "data descriptor" segment (optional but necessary if archive is not served as file)
$fr .= pack("V", $crc); // crc32
$fr .= pack("V", $c_len); // compressed filesize
$fr .= pack("V", $unc_len); // uncompressed filesize
// add this entry to array
$this -> datasec[] = $fr;
$new_offset = $this->old_offset + strlen ($fr) ;
//$new_offset = strlen(implode("", $this->datasec));
// ext. file attributes mirrors MS-DOS directory attr byte, detailed
// at http://support.microsoft.com/support/kb/articles/Q125/0/19.asp
// now add to central record
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x0a\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= "\x00\x00"; // compression method
$cdrec .= "\x00\x00\x00\x00"; // last mod time & date
$cdrec .= pack("V", 0); // crc32
$cdrec .= pack("V", 0); // compressed filesize
$cdrec .= pack("V", 0); // uncompressed filesize
$cdrec .= pack("v", strlen($name) ); // length of filename
$cdrec .= pack("v", 0 ); // extra field length
$cdrec .= pack("v", 0 ); // file comment length
$cdrec .= pack("v", 0 ); // disk number start
$cdrec .= pack("v", 0 ); // internal file attributes
$ext = "\x00\x00\x10\x00";
$ext = "\xff\xff\xff\xff";
$cdrec .= pack("V", 16 ); // external file attributes - 'directory' bit set
$cdrec .= pack("V", $this -> old_offset ); // relative offset of local header
$this -> old_offset = $new_offset;
$cdrec .= $name;
// optional extra field, file comment goes here
// save to array
$this -> ctrl_dir[] = $cdrec;
}
function add_file($data, $name) {
// adds 'file' to archive
// $data - file contents
// $name - name of file in archive. Add path if you want
$name = str_replace("\\", "/", $name);
//$name = str_replace("\\", "\\\\", $name);
$fr = "\x50\x4b\x03\x04";
$fr .= "\x14\x00"; // ver needed to extract
$fr .= "\x00\x00"; // gen purpose bit flag
$fr .= "\x08\x00"; // compression method
$fr .= "\x00\x00\x00\x00"; // last mod time and date
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr( substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
$fr .= pack("V", $crc); // crc32
$fr .= pack("V", $c_len); // compressed filesize
$fr .= pack("V", $unc_len); // uncompressed filesize
$fr .= pack("v", strlen($name) ); // length of filename
$fr .= pack("v", 0 ); // extra field length
$fr .= $name;
// end of 'local file header' segment
// 'file data' segment
$fr .= $zdata;
// "data descriptor" segment (optional but necessary if archive is not served as file)
$fr .= pack("V", $crc); // crc32
$fr .= pack("V", $c_len); // compressed filesize
$fr .= pack("V", $unc_len); // uncompressed filesize
// add this entry to array
$this -> datasec[] = $fr;
$new_offset = strlen(implode("", $this->datasec));
// now add to central directory record
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x14\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= "\x08\x00"; // compression method
$cdrec .= "\x00\x00\x00\x00"; // last mod time & date
$cdrec .= pack("V", $crc); // crc32
$cdrec .= pack("V", $c_len); // compressed filesize
$cdrec .= pack("V", $unc_len); // uncompressed filesize
$cdrec .= pack("v", strlen($name) ); // length of filename
$cdrec .= pack("v", 0 ); // extra field length
$cdrec .= pack("v", 0 ); // file comment length
$cdrec .= pack("v", 0 ); // disk number start
$cdrec .= pack("v", 0 ); // internal file attributes
$cdrec .= pack("V", 32 ); // external file attributes - 'archive' bit set
$cdrec .= pack("V", $this -> old_offset ); // relative offset of local header
// &n // bsp; echo "old offset is ".$this->old_offset.", new offset is $new_offset<br />";
$this -> old_offset = $new_offset;
$cdrec .= $name;
// optional extra field, file comment goes here
// save to central directory
$this -> ctrl_dir[] = $cdrec;
}
// dump out file
function file() {
$data = implode("", $this -> datasec);
$ctrldir = implode("", $this -> ctrl_dir);
return
$data.
$ctrldir.
$this -> eof_ctrl_dir.
pack("v", sizeof($this -> ctrl_dir)). // total # of entries "on this disk"
pack("v", sizeof($this -> ctrl_dir)). // total # of entries overall
pack("V", strlen($ctrldir)). // size of central dir
pack("V", strlen($data)). // offset to start of central dir
"\x00\x00"; // .zip file comment length
}
}
connect_db();
if (!isset($_REQUEST['checked']) || (!is_array($_REQUEST['checked']))) {
echo 'No pictures were selected.';
} else {
create_zip($_REQUEST['checked'], $_REQUEST['dl_type']);
}
close_db();
function create_zip($checked, $level) {
global $zipfile;
$dir = 'Plogger.'.date('Y.m.d').'/';
$zipfile = new zipfile();
// add the subdirectory ... important!
// $zipfile -> add_dir($dir);
add_photos($checked, $level, $dir, $zipfile);
$output = $zipfile -> file();
// the next lines attempt to clear the cache, get the filesize, and force an immediate download of the zip file:
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false);
header('Content-type: application/octet-stream');
header('Content-disposition: attachment; filename=plog-package-'.date('Y.m.d').'.zip');
header('Content-Length: '.strlen($output));
header('Content-Transfer-Encoding: binary');
echo $output;
return;
}
function add_photos($checked, $type, $dir) {
global $zipfile;
if ($type == 'collections') {
foreach ($checked as $cid) {
$query = "SELECT * FROM `".PLOGGER_TABLE_PREFIX."collections` WHERE `id`='".intval($cid)."'";
$result = run_query($query);
while ($row = mysqli_fetch_assoc($result)) {
$query = "SELECT * FROM `".PLOGGER_TABLE_PREFIX."albums` WHERE `parent_id`='".$row['id']."'";
$newresult = run_query($query);
$newchecked = array();
while ($newrow = mysqli_fetch_assoc($newresult)) {
$newchecked[] = $newrow['id'];
}
$newdir = $row['name'];
$i = 1;
while (is_dir($newdir)) {
$newdir = $row['name'].'('.$i++.')';
}
// $zipfile -> add_dir($dir . $newdir);
add_photos($newchecked, 'collection', $dir.$newdir.'/');
}
}
} else if ($type == 'collection') {
foreach ($checked as $aid) {
$query = "SELECT * FROM `".PLOGGER_TABLE_PREFIX."albums` WHERE `id`='".intval($aid)."'";
$result = run_query($query);
while ($row = mysqli_fetch_assoc($result)) {
$query = "SELECT * FROM `".PLOGGER_TABLE_PREFIX."pictures` WHERE `parent_album`='".$row['id']."'";
$newresult = run_query($query);
$newchecked = array();
while ($newrow = mysqli_fetch_assoc($newresult)) {
$newchecked[] = $newrow['id'];
}
$newdir = $row['name'];
$i = 1;
while (is_dir($newdir)) {
$newdir = $row['name'].'('.$i++.')';
}
// $zipfile -> add_dir($dir . $newdir);
add_photos($newchecked, 'album', $dir.$newdir.'/');
}
}
} elseif ($type == 'album' || $type == 'search') {
foreach ($checked as $pid) {
$query = "SELECT * FROM `".PLOGGER_TABLE_PREFIX."pictures` WHERE `id`='".intval($pid)."'";
$result = run_query($query);
while ($row = mysqli_fetch_assoc($result)) {
$file_contents = file_get_contents('plog-content/images/'.$row['path'], true);
$zipfile -> add_file($file_contents, $row['path']);
}
}
}
return;
}
?>
accountmanagementengine