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dokuwiki_ynh/sources/lib/plugins/plugin/classes/ap_download.class.php
2014-02-11 14:56:25 +01:00

288 lines
9.6 KiB
PHP

<?php
class ap_download extends ap_manage {
var $overwrite = true;
/**
* Initiate the plugin download
*/
function process() {
global $INPUT;
$plugin_url = $INPUT->str('url');
$this->download($plugin_url, $this->overwrite);
return '';
}
/**
* Print results of the download
*/
function html() {
parent::html();
ptln('<div class="pm_info">');
ptln('<h2>'.$this->lang['downloading'].'</h2>');
if ($this->manager->error) {
ptln('<div class="error">'.str_replace("\n","<br />",$this->manager->error).'</div>');
} else if (count($this->downloaded) == 1) {
ptln('<p>'.sprintf($this->lang['downloaded'],$this->downloaded[0]).'</p>');
} else if (count($this->downloaded)) { // more than one plugin in the download
ptln('<p>'.$this->lang['downloads'].'</p>');
ptln('<ul>');
foreach ($this->downloaded as $plugin) {
ptln('<li><div class="li">'.$plugin.'</div></li>',2);
}
ptln('</ul>');
} else { // none found in download
ptln('<p>'.$this->lang['download_none'].'</p>');
}
ptln('</div>');
}
/**
* Process the downloaded file
*/
function download($url, $overwrite=false) {
// check the url
$matches = array();
if (!preg_match("/[^\/]*$/", $url, $matches) || !$matches[0]) {
$this->manager->error = $this->lang['error_badurl']."\n";
return false;
}
$file = $matches[0];
if (!($tmp = io_mktmpdir())) {
$this->manager->error = $this->lang['error_dircreate']."\n";
return false;
}
if (!$file = io_download($url, "$tmp/", true, $file, 0)) {
$this->manager->error = sprintf($this->lang['error_download'],$url)."\n";
}
if (!$this->manager->error && !$this->decompress("$tmp/$file", $tmp)) {
$this->manager->error = sprintf($this->lang['error_decompress'],$file)."\n";
}
// search $tmp for the folder(s) that has been created
// move the folder(s) to lib/plugins/
if (!$this->manager->error) {
$result = array('old'=>array(), 'new'=>array());
if($this->find_folders($result,$tmp)){
// choose correct result array
if(count($result['new'])){
$install = $result['new'];
}else{
$install = $result['old'];
}
// now install all found items
foreach($install as $item){
// where to install?
if($item['type'] == 'template'){
$target = DOKU_INC.'lib/tpl/'.$item['base'];
}else{
$target = DOKU_INC.'lib/plugins/'.$item['base'];
}
// check to make sure we aren't overwriting anything
if (!$overwrite && @file_exists($target)) {
// remember our settings, ask the user to confirm overwrite, FIXME
continue;
}
$instruction = @file_exists($target) ? 'update' : 'install';
// copy action
if ($this->dircopy($item['tmp'], $target)) {
$this->downloaded[] = $item['base'];
$this->plugin_writelog($target, $instruction, array($url));
} else {
$this->manager->error .= sprintf($this->lang['error_copy']."\n", $item['base']);
}
}
} else {
$this->manager->error = $this->lang['error']."\n";
}
}
// cleanup
if ($tmp) $this->dir_delete($tmp);
if (!$this->manager->error) {
msg(sprintf($this->lang['packageinstalled'], count($this->downloaded), join(',',$this->downloaded)),1);
$this->refresh();
return true;
}
return false;
}
/**
* Find out what was in the extracted directory
*
* Correct folders are searched recursively using the "*.info.txt" configs
* as indicator for a root folder. When such a file is found, it's base
* setting is used (when set). All folders found by this method are stored
* in the 'new' key of the $result array.
*
* For backwards compatibility all found top level folders are stored as
* in the 'old' key of the $result array.
*
* When no items are found in 'new' the copy mechanism should fall back
* the 'old' list.
*
* @author Andreas Gohr <andi@splitbrain.org>
* @param arrayref $result - results are stored here
* @param string $base - the temp directory where the package was unpacked to
* @param string $dir - a subdirectory. do not set. used by recursion
* @return bool - false on error
*/
function find_folders(&$result,$base,$dir=''){
$dh = @opendir("$base/$dir");
if(!$dh) return false;
while (false !== ($f = readdir($dh))) {
if ($f == '.' || $f == '..' || $f == 'tmp') continue;
if(!is_dir("$base/$dir/$f")){
// it's a file -> check for config
if($f == 'plugin.info.txt'){
$info = array();
$info['type'] = 'plugin';
$info['tmp'] = "$base/$dir";
$conf = confToHash("$base/$dir/$f");
$info['base'] = utf8_basename($conf['base']);
if(!$info['base']) $info['base'] = utf8_basename("$base/$dir");
$result['new'][] = $info;
}elseif($f == 'template.info.txt'){
$info = array();
$info['type'] = 'template';
$info['tmp'] = "$base/$dir";
$conf = confToHash("$base/$dir/$f");
$info['base'] = utf8_basename($conf['base']);
if(!$info['base']) $info['base'] = utf8_basename("$base/$dir");
$result['new'][] = $info;
}
}else{
// it's a directory -> add to dir list for old method, then recurse
if(!$dir){
$info = array();
$info['type'] = 'plugin';
$info['tmp'] = "$base/$dir/$f";
$info['base'] = $f;
$result['old'][] = $info;
}
$this->find_folders($result,$base,"$dir/$f");
}
}
closedir($dh);
return true;
}
/**
* Decompress a given file to the given target directory
*
* Determines the compression type from the file extension
*/
function decompress($file, $target) {
global $conf;
// decompression library doesn't like target folders ending in "/"
if (substr($target, -1) == "/") $target = substr($target, 0, -1);
$ext = $this->guess_archive($file);
if (in_array($ext, array('tar','bz','gz'))) {
switch($ext){
case 'bz':
$compress_type = Tar::COMPRESS_BZIP;
break;
case 'gz':
$compress_type = Tar::COMPRESS_GZIP;
break;
default:
$compress_type = Tar::COMPRESS_NONE;
}
$tar = new Tar();
try {
$tar->open($file, $compress_type);
$tar->extract($target);
return true;
}catch(Exception $e){
if($conf['allowdebug']){
msg('Tar Error: '.$e->getMessage().' ['.$e->getFile().':'.$e->getLine().']',-1);
}
return false;
}
} else if ($ext == 'zip') {
$zip = new ZipLib();
$ok = $zip->Extract($file, $target);
// FIXME sort something out for handling zip error messages meaningfully
return ($ok==-1?false:true);
}
// unsupported file type
return false;
}
/**
* Determine the archive type of the given file
*
* Reads the first magic bytes of the given file for content type guessing,
* if neither bz, gz or zip are recognized, tar is assumed.
*
* @author Andreas Gohr <andi@splitbrain.org>
* @returns boolean|string false if the file can't be read, otherwise an "extension"
*/
function guess_archive($file){
$fh = fopen($file,'rb');
if(!$fh) return false;
$magic = fread($fh,5);
fclose($fh);
if(strpos($magic,"\x42\x5a") === 0) return 'bz';
if(strpos($magic,"\x1f\x8b") === 0) return 'gz';
if(strpos($magic,"\x50\x4b\x03\x04") === 0) return 'zip';
return 'tar';
}
/**
* Copy with recursive sub-directory support
*/
function dircopy($src, $dst) {
global $conf;
if (is_dir($src)) {
if (!$dh = @opendir($src)) return false;
if ($ok = io_mkdir_p($dst)) {
while ($ok && (false !== ($f = readdir($dh)))) {
if ($f == '..' || $f == '.') continue;
$ok = $this->dircopy("$src/$f", "$dst/$f");
}
}
closedir($dh);
return $ok;
} else {
$exists = @file_exists($dst);
if (!@copy($src,$dst)) return false;
if (!$exists && !empty($conf['fperm'])) chmod($dst, $conf['fperm']);
@touch($dst,filemtime($src));
}
return true;
}
}