def decompress_fs(data, path, test = False):
"""Decompress filesystem"""
lzofsdatalen = unpack('>L', data[4:8])[0]
if draytools.verbose:
print 'Compressed FS length: %d [0x%08X]' % (lzofsdatalen,
lzofsdatalen)
# stupid assumption of raw FS length. Seems OK for now
fsdatalen = 0x800000
fs_raw = pydelzo.decompress('\xF0' + pack(">L", fsdatalen) \
+ data[0x08:0x08 + lzofsdatalen])
cfs = draytools.fs(fs_raw, test, draytools.verbose)
return (lzofsdatalen, cfs.save_all(path))
def decompress_cfg(data):
"""Decompress a config file"""
modelstr = "V" + format(unpack(">H",
draytools.get_modelid(data))[0],"04X")
if draytools.verbose and draytools.modelprint:
print 'Model is :\t' + modelstr
else:
draytools.modelprint = True
rawcfgsize = 0x00100000
lzocfgsize = unpack(">L", data[0x24:0x28])[0]
raw = data[:0x2D] + '\x00' + data[0x2E:0x100] \
+ pydelzo.decompress('\xF0' + pack(">L",rawcfgsize) \
+ data[0x100:0x100+lzocfgsize])
return raw
def decompress_cfg(data):
"""Decompress a config file"""
modelstr = "V" + format(
unpack(">H", draytools.get_modelid(data))[0], "04X")
if draytools.verbose and draytools.modelprint:
print 'Model is :\t' + modelstr
else:
draytools.modelprint = True
rawcfgsize = 0x00100000
lzocfgsize = unpack(">L", data[0x24:0x28])[0]
raw = data[:0x2D] + '\x00' + data[0x2E:0x100] \
+ pydelzo.decompress('\xF0' + pack(">L",rawcfgsize) \
+ data[0x100:0x100+lzocfgsize])
return raw
def save_file(self,i):
"""Extract file #i from current FS"""
fname = self.get_fname(i)
# compressed file data offset in FS block
ds = self.get_offset(i)
# size of compressed file
fs = self.get_fsize(i)
# compressed file data
fdata = self.cdata[ds : ds+fs]
# create all subdirs along the path if they don't exist
pp = fname.split('\\')
pp = [self.path] + pp
ppp = os.sep.join(pp[:-1])
if len(pp) > 1:
if not os.path.exists(ppp) and not self.test:
os.makedirs(ppp)
nfname = os.sep.join(pp)
# size of uncompressed file
rawfs = -1
if not self.test:
ff = file(nfname,'wb')
# perform extraction, some file types are not compressed
if fs>0:
if pp[-1].split('.')[-1].lower() \
in ['gif','jpg','cgi','cab','txt','jar']:
rawfdata = fdata
else:
try:
rawfdata = pydelzo.decompress('\xF0' \
+ pack(">L",fs*64)+fdata)
except LZO_ERROR as lze:
print '[ERR]:\tFile "'+ fname \
+ '" is damaged or uncompressed [' \
+ str(lze) \
+ '], RAW DATA WRITTEN'
rawfdata = fdata
else:
rawfdata = ''
rawfs = len(rawfdata)
if not self.test:
ff.write(rawfdata)
ff.close()
# print some debug info for each file
if self.echo:
print '%08X "' % ds + fname + '" %08X' % fs \
+ ' %08X' % rawfs
return (fs, rawfs)
def save_file(self,i):
"""Extract file #i from current FS"""
fname = self.get_fname(i)
# compressed file data offset in FS block
ds = self.get_offset(i)
# size of compressed file
fs = self.get_fsize(i)
# compressed file data
fdata = self.cdata[ds : ds+fs]
# create all subdirs along the path if they don't exist
pp = fname.split('\\')
pp = [self.path] + pp
ppp = os.sep.join(pp[:-1])
if len(pp) > 1:
if not os.path.exists(ppp) and not self.test:
os.makedirs(ppp)
nfname = os.sep.join(pp)
# size of uncompressed file
rawfs = -1
if not self.test:
ff = file(nfname,'wb')
# perform extraction, some file types are not compressed
if fs > 0:
if pp[-1].split('.')[-1].lower() \
in ['gif','jpg','cgi','cab','txt','jar']:
rawfdata = fdata
else:
try:
rawfdata = pydelzo.decompress('\xF0' \
+ pack(">L",fs*64)+fdata)
except LZO_ERROR as lze:
print '[ERR]:\tFile "'+ fname \
+ '" is damaged or uncompressed [' \
+ str(lze) \
+ '], RAW DATA WRITTEN'
rawfdata = fdata
else:
rawfdata = ''
rawfs = len(rawfdata)
if not self.test:
ff.write(rawfdata)
ff.close()
# print some debug info for each file
if self.echo:
print '%08X "' % ds + fname + '" %08X' % fs \
+ ' %08X' % rawfs
return (fs, rawfs)
def decompress_firmware(data):
"""Decompress firmware"""
flen = len(data)
sigstart = data.find('\xA5\xA5\xA5\x5A\xA5\x5A')
# Try an alternative signature
if sigstart <= 0:
sigstart = data.find('\x5A\x5A\xA5\x5A\xA5\x5A')
# Compressed FW block found, now decompress
if sigstart > 0:
if draytools.verbose:
print 'Signature found at [0x%08X]' % sigstart
lzosizestart = sigstart + 6
lzostart = lzosizestart + 4
lzosize = unpack('>L', data[lzosizestart:lzostart])[0]
return data[0x100:sigstart+2] \
+ pydelzo.decompress('\xF0' + pack(">L",0x1000000) \
+ data[lzostart:lzostart+lzosize])
else:
print '[ERR]:\tCompressed FW signature not found!'
raise Exception('Compressed FW signature not found')
return ''
def decompress_firmware(data):
"""Decompress firmware"""
flen = len(data)
sigstart = data.find('\xA5\xA5\xA5\x5A\xA5\x5A')
# Try an alternative signature
if sigstart <= 0:
sigstart = data.find('\x5A\x5A\xA5\x5A\xA5\x5A')
# Compressed FW block found, now decompress
if sigstart > 0:
if draytools.verbose:
print 'Signature found at [0x%08X]' % sigstart
lzosizestart = sigstart + 6
lzostart = lzosizestart + 4
lzosize = unpack('>L', data[lzosizestart:lzostart])[0]
return data[0x100:sigstart+2] \
+ pydelzo.decompress('\xF0' + pack(">L",0x1000000) \
+ data[lzostart:lzostart+lzosize])
else:
print '[ERR]:\tCompressed FW signature not found!'
raise Exception('Compressed FW signature not found')
return ''