| Methods Summary |
|---|
| static int | bytes2short(byte[] bytes, int off)
return bytes[off] | (bytes[off+1]<<8);
|
| static java.lang.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);
|
| public java.lang.String | getRealFilename()
return real_file;
|
| public boolean | isDirectory()
return is_dir;
|
| public static void | p(java.lang.String str)
System.out.println(str);
|
| public void | parse(java.io.File f)
// 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);
|
