91 lines
2.4 KiB
PHP
91 lines
2.4 KiB
PHP
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<?php
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Class ForceDownload{
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public $filename;
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public $dir;
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public $path;
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public $download_name;
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public $size;
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public $time_file;
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public $mime_type;
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public $extension;
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public $http_reponse;
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public function __construct($dir, $filename){
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$dir = trim( (string) $dir );
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$this->dir = (string) $dir;
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$this->filename = basename( (string) $filename );
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$this->path = $this->dir . $this->filename;
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$this->download_name = $this->filename;
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$this->mime_type = 'application/octet-stream';
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// checking file
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$this->file_checked();
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}
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protected function file_checked(){
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if( $this->filename == '' ){
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$this->http_reponse = 406; // not acceptable
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return FALSE;
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}
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if( !is_file($this->path) ){
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$this->http_reponse = 404; // not found
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return FALSE;
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}
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else if( !is_readable($this->path) ){
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$this->http_reponse = 403; // forbidden
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return FALSE;
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}
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$info = pathinfo( $this->path );
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$this->extension = $info['extension'];
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$this->size = filesize($this->path);
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$this->time_file = date( 'r', filemtime( $this->path ) );
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$this->http_reponse = 200;
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return TRUE;
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}
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protected function headers_for_download(){
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header('Content-Type: ' . $this->mime_type);
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header('Content-Disposition: attachment; filename="'. $this->download_name .'"');
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header('Content-Transfer-Encoding: binary');
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header('Content-Length: ' . $this->size);
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header('Last-Modified: ' . $this->time_file);
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header('Expires: 0');
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header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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header('Pragma: public');
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return;
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}
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public function set_download_name($name){
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$this->download_name = preg_replace(
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array("/\s+/", "/[^-\.\w]+/"),
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array("_", ""),
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trim($name));
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}
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public function download(){
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if( $this->http_reponse === 200 ){
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$this->headers_for_download();
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/*end headers*/
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if( !@readfile( $this->path ) ){
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$this->http_reponse = 500; // internal server error
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return FALSE;
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}
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return TRUE;
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}
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return FALSE;
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}
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public function get_error(){
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switch($this->http_reponse){
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case 200: $error = null; break;
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case 406: $error = 'Undefined file'; break;
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case 404: $error = 'File not found'; break;
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case 403: $error = 'Access denied'; break;
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default: $error = 'Unknown error'; break;
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}
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return $error;
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}
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}
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