63 lines
2.2 KiB
PHP
63 lines
2.2 KiB
PHP
<?php
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if( isset( $_POST[ 'Upload' ] ) ) {
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// Check Anti-CSRF token
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checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );
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// File information
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$uploaded_name = $_FILES[ 'uploaded' ][ 'name' ];
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$uploaded_ext = substr( $uploaded_name, strrpos( $uploaded_name, '.' ) + 1);
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$uploaded_size = $_FILES[ 'uploaded' ][ 'size' ];
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$uploaded_type = $_FILES[ 'uploaded' ][ 'type' ];
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$uploaded_tmp = $_FILES[ 'uploaded' ][ 'tmp_name' ];
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// Where are we going to be writing to?
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$target_path = DVWA_WEB_PAGE_TO_ROOT . 'hackable/uploads/';
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//$target_file = basename( $uploaded_name, '.' . $uploaded_ext ) . '-';
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$target_file = md5( uniqid() . $uploaded_name ) . '.' . $uploaded_ext;
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$temp_file = ( ( ini_get( 'upload_tmp_dir' ) == '' ) ? ( sys_get_temp_dir() ) : ( ini_get( 'upload_tmp_dir' ) ) );
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$temp_file .= DIRECTORY_SEPARATOR . md5( uniqid() . $uploaded_name ) . '.' . $uploaded_ext;
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// Is it an image?
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if( ( strtolower( $uploaded_ext ) == 'jpg' || strtolower( $uploaded_ext ) == 'jpeg' || strtolower( $uploaded_ext ) == 'png' ) &&
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( $uploaded_size < 100000 ) &&
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( $uploaded_type == 'image/jpeg' || $uploaded_type == 'image/png' ) &&
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getimagesize( $uploaded_tmp ) ) {
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// Strip any metadata, by re-encoding image (Note, using php-Imagick is recommended over php-GD)
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if( $uploaded_type == 'image/jpeg' ) {
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$img = imagecreatefromjpeg( $uploaded_tmp );
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imagejpeg( $img, $temp_file, 100);
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}
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else {
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$img = imagecreatefrompng( $uploaded_tmp );
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imagepng( $img, $temp_file, 9);
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}
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imagedestroy( $img );
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// Can we move the file to the web root from the temp folder?
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if( rename( $temp_file, ( getcwd() . DIRECTORY_SEPARATOR . $target_path . $target_file ) ) ) {
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// Yes!
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$html .= "<pre><a href='${target_path}${target_file}'>${target_file}</a> succesfully uploaded!</pre>";
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}
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else {
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// No
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$html .= '<pre>Your image was not uploaded.</pre>';
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}
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// Delete any temp files
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if( file_exists( $temp_file ) )
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unlink( $temp_file );
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}
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else {
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// Invalid file
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$html .= '<pre>Your image was not uploaded. We can only accept JPEG or PNG images.</pre>';
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}
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}
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// Generate Anti-CSRF token
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generateSessionToken();
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?>
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