mirror of https://github.com/dirtbags/moth.git
87 lines
2.1 KiB
Python
Executable File
87 lines
2.1 KiB
Python
Executable File
#! /usr/bin/python3
|
|
|
|
import sys
|
|
import struct
|
|
import random
|
|
stdch = ('␀·········␊··␍··'
|
|
'················'
|
|
' !"#$%&\'()*+,-./'
|
|
'0123456789:;<=>?'
|
|
'@ABCDEFGHIJKLMNO'
|
|
'PQRSTUVWXYZ[\]^_'
|
|
'`abcdefghijklmno'
|
|
'pqrstuvwxyz{|}~·'
|
|
'················'
|
|
'················'
|
|
'················'
|
|
'················'
|
|
'················'
|
|
'················'
|
|
'················'
|
|
'················')
|
|
|
|
def hexdump(buf, fd=sys.stdout, charset=stdch):
|
|
offset = 0
|
|
last = None
|
|
elided = False
|
|
for offset in range(0, len(buf), 16):
|
|
l = buf[offset:offset+16]
|
|
|
|
if l == last:
|
|
if not elided:
|
|
fd.write("*\n")
|
|
elided = True
|
|
continue
|
|
else:
|
|
last = l
|
|
elided = False
|
|
|
|
pad = 16-len(l)
|
|
|
|
hx = []
|
|
for b in l:
|
|
hx.append('%02x' % b)
|
|
hx += [' '] * pad
|
|
|
|
fd.write('%08x ' % offset)
|
|
fd.write(' '.join(hx[:8]))
|
|
fd.write(' ')
|
|
fd.write(' '.join(hx[8:]))
|
|
fd.write(' |')
|
|
fd.write(''.join(charset[b] for b in l))
|
|
fd.write('|\n')
|
|
fd.write('%08x\n' % len(buf))
|
|
|
|
|
|
class Container:
|
|
def __init__(self):
|
|
self.contents = []
|
|
|
|
def add(self, opcode, subcode, part, text):
|
|
hdr = struct.pack('!BBHH',
|
|
opcode, subcode, part,
|
|
len(text))
|
|
self.contents.append(hdr + text)
|
|
random.shuffle(self.contents)
|
|
|
|
def bytes(self):
|
|
body = b''.join(self.contents)
|
|
hdr = struct.pack('!LHL',
|
|
0xB00FB00F,
|
|
2,
|
|
len(body))
|
|
return hdr + body
|
|
|
|
|
|
|
|
c = Container()
|
|
s = open('salad.jpg', 'rb')
|
|
i = 0
|
|
while True:
|
|
b = s.read(3150)
|
|
if not b:
|
|
break
|
|
c.add(5, 8, i, b)
|
|
i += 1
|
|
hexdump(c.bytes())
|