Java 解析windows 快捷方式 lnk文件

kyaa111 3年前 ⋅ 996 阅读

转载自 https://www.oschina.net/code/snippet_12_274

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
 
 
public class Test {
 
	public Test(File f) throws Exception {
		parse(f);
	}
 
	private boolean is_dir;
 
	public boolean isDirectory() {
		return is_dir;
	}
 
	private String real_file;
 
	public String getRealFilename() {
		return real_file;
	}
 
	public void parse(File f) throws Exception {
		// read the entire file into a byte buffer
		FileInputStream fin = new FileInputStream(f);
		ByteArrayOutputStream bout = new ByteArrayOutputStream();
		byte[] buff = new byte[256];
		while (true) {
			int n = fin.read(buff);
			if (n == -1) {
				break;
			}
			bout.write(buff, 0, n);
		}
		fin.close();
		byte[] link = bout.toByteArray();
 
		// get the flags byte
		byte flags = link[0x14];
 
		// get the file attributes byte
		final int file_atts_offset = 0x18;
		byte fileatts = link[file_atts_offset];
		byte is_dir_mask = (byte) 0x10;
		if ((fileatts & is_dir_mask) > 0) {
			is_dir = true;
		} else {
			is_dir = false;
		}
 
		// if the shell settings are present, skip them
		final int shell_offset = 0x4c;
		int shell_len = 0;
		if ((flags & 0x1) > 0) {
			// the plus 2 accounts for the length marker itself
			shell_len = bytes2short(link, shell_offset) + 2;
		}
 
		// get to the file settings
		int file_start = 0x4c + shell_len;
 
		// get the local volume and local system values
		int local_sys_off = link[file_start + 0x10] + file_start;
		real_file = getNullDelimitedString(link, local_sys_off);
		p("real filename = " + real_file);
	}
 
	static String getNullDelimitedString(byte[] bytes, int off) {
		int len = 0;
		// count bytes until the null character (0)
		while (true) {
			if (bytes[off + len] == 0) {
				break;
			}
			len++;
		}
		return new String(bytes, off, len);
	}
 
	// convert two bytes into a short
	// note, this is little endian because it's for an
	// Intel only OS.
	static int bytes2short(byte[] bytes, int off) {
        return (bytes[off] & 0xFF) | ((bytes[off + 1] & 0xFF) << 8) ;
    }
	public static void p(String str) {
        System.out.println(str);
    }
	public static void main(String[] args) throws Exception{
		new Test(new File("D:\\1.lnk"));
	}
}

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