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bmc-tools.py
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bmc-tools.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import argparse, os, os.path, sys
from struct import pack, unpack
class BMCContainer():
BIN_FILE_HEADER = b"RDP8bmp\x00"
BIN_CONTAINER = b".BIN"
BMC_CONTAINER = b".BMC"
TILE_HEADER_SIZE = {BMC_CONTAINER: 0x14, BIN_CONTAINER: 0xC}
STRIPE_WIDTH = 64
LOG_TYPES = ["[===]", "[+++]", "[---]", "[!!!]"]
PALETTE = bytes(bytearray((0, 0, 0, 0, 0, 0, 128, 0, 0, 128, 0, 0, 0, 128, 128, 0, 128, 0, 0, 0, 128, 0, 128, 0, 128, 128, 0, 0, 192, 192, 192, 0, 192, 220, 192, 0, 240, 202, 166, 0, 0, 32, 64, 0, 0, 32, 96, 0, 0, 32, 128, 0, 0, 32, 160, 0, 0, 32, 192, 0, 0, 32, 224, 0, 0, 64, 0, 0, 0, 64, 32, 0, 0, 64, 64, 0, 0, 64, 96, 0, 0, 64, 128, 0, 0, 64, 160, 0, 0, 64, 192, 0, 0, 64, 224, 0, 0, 96, 0, 0, 0, 96, 32, 0, 0, 96, 64, 0, 0, 96, 96, 0, 0, 96, 128, 0, 0, 96, 160, 0, 0, 96, 192, 0, 0, 96, 224, 0, 0, 128, 0, 0, 0, 128, 32, 0, 0, 128, 64, 0, 0, 128, 96, 0, 0, 128, 128, 0, 0, 128, 160, 0, 0, 128, 192, 0, 0, 128, 224, 0, 0, 160, 0, 0, 0, 160, 32, 0, 0, 160, 64, 0, 0, 160, 96, 0, 0, 160, 128, 0, 0, 160, 160, 0, 0, 160, 192, 0, 0, 160, 224, 0, 0, 192, 0, 0, 0, 192, 32, 0, 0, 192, 64, 0, 0, 192, 96, 0, 0, 192, 128, 0, 0, 192, 160, 0, 0, 192, 192, 0, 0, 192, 224, 0, 0, 224, 0, 0, 0, 224, 32, 0, 0, 224, 64, 0, 0, 224, 96, 0, 0, 224, 128, 0, 0, 224, 160, 0, 0, 224, 192, 0, 0, 224, 224, 0, 64, 0, 0, 0, 64, 0, 32, 0, 64, 0, 64, 0, 64, 0, 96, 0, 64, 0, 128, 0, 64, 0, 160, 0, 64, 0, 192, 0, 64, 0, 224, 0, 64, 32, 0, 0, 64, 32, 32, 0, 64, 32, 64, 0, 64, 32, 96, 0, 64, 32, 128, 0, 64, 32, 160, 0, 64, 32, 192, 0, 64, 32, 224, 0, 64, 64, 0, 0, 64, 64, 32, 0, 64, 64, 64, 0, 64, 64, 96, 0, 64, 64, 128, 0, 64, 64, 160, 0, 64, 64, 192, 0, 64, 64, 224, 0, 64, 96, 0, 0, 64, 96, 32, 0, 64, 96, 64, 0, 64, 96, 96, 0, 64, 96, 128, 0, 64, 96, 160, 0, 64, 96, 192, 0, 64, 96, 224, 0, 64, 128, 0, 0, 64, 128, 32, 0, 64, 128, 64, 0, 64, 128, 96, 0, 64, 128, 128, 0, 64, 128, 160, 0, 64, 128, 192, 0, 64, 128, 224, 0, 64, 160, 0, 0, 64, 160, 32, 0, 64, 160, 64, 0, 64, 160, 96, 0, 64, 160, 128, 0, 64, 160, 160, 0, 64, 160, 192, 0, 64, 160, 224, 0, 64, 192, 0, 0, 64, 192, 32, 0, 64, 192, 64, 0, 64, 192, 96, 0, 64, 192, 128, 0, 64, 192, 160, 0, 64, 192, 192, 0, 64, 192, 224, 0, 64, 224, 0, 0, 64, 224, 32, 0, 64, 224, 64, 0, 64, 224, 96, 0, 64, 224, 128, 0, 64, 224, 160, 0, 64, 224, 192, 0, 64, 224, 224, 0, 128, 0, 0, 0, 128, 0, 32, 0, 128, 0, 64, 0, 128, 0, 96, 0, 128, 0, 128, 0, 128, 0, 160, 0, 128, 0, 192, 0, 128, 0, 224, 0, 128, 32, 0, 0, 128, 32, 32, 0, 128, 32, 64, 0, 128, 32, 96, 0, 128, 32, 128, 0, 128, 32, 160, 0, 128, 32, 192, 0, 128, 32, 224, 0, 128, 64, 0, 0, 128, 64, 32, 0, 128, 64, 64, 0, 128, 64, 96, 0, 128, 64, 128, 0, 128, 64, 160, 0, 128, 64, 192, 0, 128, 64, 224, 0, 128, 96, 0, 0, 128, 96, 32, 0, 128, 96, 64, 0, 128, 96, 96, 0, 128, 96, 128, 0, 128, 96, 160, 0, 128, 96, 192, 0, 128, 96, 224, 0, 128, 128, 0, 0, 128, 128, 32, 0, 128, 128, 64, 0, 128, 128, 96, 0, 128, 128, 128, 0, 128, 128, 160, 0, 128, 128, 192, 0, 128, 128, 224, 0, 128, 160, 0, 0, 128, 160, 32, 0, 128, 160, 64, 0, 128, 160, 96, 0, 128, 160, 128, 0, 128, 160, 160, 0, 128, 160, 192, 0, 128, 160, 224, 0, 128, 192, 0, 0, 128, 192, 32, 0, 128, 192, 64, 0, 128, 192, 96, 0, 128, 192, 128, 0, 128, 192, 160, 0, 128, 192, 192, 0, 128, 192, 224, 0, 128, 224, 0, 0, 128, 224, 32, 0, 128, 224, 64, 0, 128, 224, 96, 0, 128, 224, 128, 0, 128, 224, 160, 0, 128, 224, 192, 0, 128, 224, 224, 0, 192, 0, 0, 0, 192, 0, 32, 0, 192, 0, 64, 0, 192, 0, 96, 0, 192, 0, 128, 0, 192, 0, 160, 0, 192, 0, 192, 0, 192, 0, 224, 0, 192, 32, 0, 0, 192, 32, 32, 0, 192, 32, 64, 0, 192, 32, 96, 0, 192, 32, 128, 0, 192, 32, 160, 0, 192, 32, 192, 0, 192, 32, 224, 0, 192, 64, 0, 0, 192, 64, 32, 0, 192, 64, 64, 0, 192, 64, 96, 0, 192, 64, 128, 0, 192, 64, 160, 0, 192, 64, 192, 0, 192, 64, 224, 0, 192, 96, 0, 0, 192, 96, 32, 0, 192, 96, 64, 0, 192, 96, 96, 0, 192, 96, 128, 0, 192, 96, 160, 0, 192, 96, 192, 0, 192, 96, 224, 0, 192, 128, 0, 0, 192, 128, 32, 0, 192, 128, 64, 0, 192, 128, 96, 0, 192, 128, 128, 0, 192, 128, 160, 0, 192, 128, 192, 0, 192, 128, 224, 0, 192, 160, 0, 0, 192, 160, 32, 0, 192, 160, 64, 0, 192, 160, 96, 0, 192, 160, 128, 0, 192, 160, 160, 0, 192, 160, 192, 0, 192, 160, 224, 0, 192, 192, 0, 0, 192, 192, 32, 0, 192, 192, 64, 0, 192, 192, 96, 0, 192, 192, 128, 0, 192, 192, 160, 0, 240, 251, 255, 0, 164, 160, 160, 0, 128, 128, 128, 0, 0, 0, 255, 0, 0, 255, 0, 0, 0, 255, 255, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 255, 0, 0, 255, 255, 255, 0)))
def __init__(self, verbose=False, count=0, old=False, big=False, width=64):
self.bdat = ""
self.o_bmps = []
self.bmps = []
self.btype = None
self.cnt = count
self.fname = None
self.oldsave = old
self.pal = False
self.verb = verbose
self.big = big
self.STRIPE_WIDTH = width
if count > 0:
self.b_log(sys.stdout, True, 2, "At most %d tiles will be processed." % (count))
if old:
self.b_log(sys.stdout, True, 2, "Old data will also be saved in separate files.")
def b_log(self, stream, verbose, ltype, lmsg):
if not verbose or self.verb:
stream.write("%s %s%s" % (self.LOG_TYPES[ltype], lmsg, os.linesep))
return True
def b_import(self, fname):
if len(self.bdat) > 0:
self.b_log(sys.stderr, False, 3, "Data is already waiting to be processed; aborting.")
return False
with open(fname, "rb") as f:
self.bdat = f.read()
if len(self.bdat) == 0:
self.b_log(sys.stderr, False, 3, "Unable to retrieve file contents; aborting.")
return False
self.fname = fname
self.btype = self.BMC_CONTAINER
if self.bdat[:len(self.BIN_FILE_HEADER)] == self.BIN_FILE_HEADER:
self.b_log(sys.stdout, True, 2, "Subsequent header version: %d." % (unpack("<L", self.bdat[len(self.BIN_FILE_HEADER):len(self.BIN_FILE_HEADER)+4])[0]))
self.bdat = self.bdat[len(self.BIN_FILE_HEADER)+4:]
self.btype = self.BIN_CONTAINER
self.b_log(sys.stdout, True, 0, "Successfully loaded '%s' as a %s container." % (self.fname, self.btype))
return True
def b_process(self):
if len(self.bdat) == 0:
self.b_log(sys.stderr, False, 3, "Nothing to process.")
return False
bl = 0
while len(self.bdat) > 0:
old = False
o_bmp = ""
t_hdr = self.bdat[:self.TILE_HEADER_SIZE[self.btype]]
key1, key2, t_width, t_height = unpack("<LLHH", t_hdr[:0xC])
if self.btype == self.BIN_CONTAINER:
bl = 4*t_width*t_height
t_bmp = self.b_parse_rgb32b(self.bdat[len(t_hdr):len(t_hdr)+bl])
elif self.btype == self.BMC_CONTAINER:
t_bmp = ""
t_len, t_params = unpack("<LL", t_hdr[-0x8:])
if t_params & 0x08: #This bit is always ONE when relevant data is smaller than expected data, thus it is most likely the "compression" bit flag.
self.b_log(sys.stdout, False, 3, "Tile data is compressed (%d bytes compressed in %d bytes); skipping." % (t_width*t_height*4, t_len))
if bl == 0:
if "22.bmc" in self.fname:
bl = 64*64*2
elif "24.bmc" in self.fname:
bl = 64*64*4
elif "2.bmc" in self.fname:
bl = 64*64
else:
for b in [1, 2, 4]:
if len(self.bdat) < len(t_hdr)+64*64*b+8:
break
elif unpack("<H", self.bdat[len(t_hdr)+64*64*b+8:][:2])[0] == 64:
bl = 64*64*b
break
if bl == 0:
self.b_log(sys.stderr, False, 3, "Unable to determine data pattern size; exiting before throwing any error!")
return False
else:
cf = t_len//(t_width*t_height)
if cf == 4:
t_bmp = self.b_parse_rgb32b(self.bdat[len(t_hdr):len(t_hdr)+cf*t_width*t_height])
if t_height != 64:
old = True
o_bmp = self.b_parse_rgb32b(self.bdat[len(t_hdr)+cf*t_width*t_height:len(t_hdr)+cf*64*64])
elif cf == 3:
t_bmp = self.b_parse_rgb24b(self.bdat[len(t_hdr):len(t_hdr)+cf*t_width*t_height])
if t_height != 64:
old = True
o_bmp = self.b_parse_rgb24b(self.bdat[len(t_hdr)+cf*t_width*t_height:len(t_hdr)+cf*64*64])
elif cf == 2:
t_bmp = self.b_parse_rgb565(self.bdat[len(t_hdr):len(t_hdr)+cf*t_width*t_height])
if t_height != 64:
old = True
o_bmp = self.b_parse_rgb565(self.bdat[len(t_hdr)+cf*t_width*t_height:len(t_hdr)+cf*64*64])
elif cf == 1:
self.pal = True
t_bmp = self.PALETTE+self.bdat[len(t_hdr):len(t_hdr)+cf*t_width*t_height]
if t_height != 64:
old = True
o_bmp = self.PALETTE+self.bdat[len(t_hdr)+cf*t_width*t_height:len(t_hdr)+cf*64*64]
else:
self.b_log(sys.stderr, False, 3, "Unexpected bpp (%d) found during processing; aborting." % (8*cf))
return False
bl = cf*64*64
if len(t_bmp) > 0:
self.bmps.append(t_bmp)
self.o_bmps.append(o_bmp)
if len(self.bmps)%100 == 0:
self.b_log(sys.stdout, True, 1, "%d tiles successfully extracted so far." % (len(self.bmps)))
self.bdat = self.bdat[len(t_hdr)+bl:]
if self.cnt != 0 and len(self.bmps) == self.cnt:
break
self.b_log(sys.stdout, False, 0, "%d tiles successfully extracted in the end." % (len(self.bmps)))
return True
def b_parse_rgb565(self, data):
d_out = b""
while len(data) > 0:
pxl = unpack("<H", data[:2])[0]
bl = ((pxl>>8)&0xF8)|((pxl>>13)&0x07)
gr = ((pxl>>3)&0xFC)|((pxl>>9)&0x03)
re = ((pxl<<3)&0xF8)|((pxl>>2)&0x07)
d_out+=bytearray((re, gr, bl, 255))
data = data[2:]
return bytes(d_out)
def b_parse_rgb32b(self, data):
d_out = b""
d_buf = b""
while len(data) > 0:
if self.btype == self.BIN_CONTAINER:
d_buf+=data[:3]+b"\xFF"
if len(d_buf) == 256:
d_out = d_buf+d_out
d_buf = b""
else:
d_out+=data[:3]+b"\xFF"
data = data[4:]
return d_out
def b_parse_rgb24b(self, data):
d_out = b""
d_buf = b""
while len(data) > 0:
if self.btype == self.BIN_CONTAINER:
d_buf+=data[:3]+b"\xFF"
if len(d_buf) == 256:
d_out = d_buf+d_out
d_buf = b""
else:
d_out+=data[:3]+b"\xFF"
data = data[3:]
return d_out
def b_export(self, dname):
if not os.path.isdir(dname):
self.b_log(sys.stderr, False, 3, "Destination must be an already existing folder.")
return False
self.fname = os.path.basename(self.fname)
for i in range(len(self.bmps)):
self.b_write(os.path.join(dname, "%s_%04d.bmp" % (self.fname, i)), self.b_export_bmp(64, len(self.bmps[i])//256, self.bmps[i]))
if self.oldsave and len(self.o_bmps[i]) > 0:
self.b_write(os.path.join(dname, "%s_old_%04d.bmp" % (self.fname, i)), self.b_export_bmp(64, len(self.o_bmps[i])//256, self.o_bmps[i]))
self.b_log(sys.stdout, False, 0, "Successfully exported %d files." % (len(self.bmps)))
if self.big:
pad = b"\xFF"
if not self.pal:
pad*=4
for i in range(len(self.bmps)):
if self.pal:
self.bmps[i] = self.bmps[i][len(self.PALETTE):]
while len(self.bmps[i]) != 64*64*len(pad):
self.bmps[i]+=pad*64
w = 64*len(self.bmps)
h = 64
if len(self.bmps)//self.STRIPE_WIDTH > 0:
m = len(self.bmps)%self.STRIPE_WIDTH
if m != 0:
for i in range(self.STRIPE_WIDTH-m):
self.bmps.append(pad*64*64)
w = self.STRIPE_WIDTH*64
h*=len(self.bmps)//self.STRIPE_WIDTH
c_bmp = b"" if not self.pal else self.PALETTE
if self.btype == self.BIN_CONTAINER:
collage_builder = (lambda x, a=self, PAD=len(pad), WIDTH=range(w // 64): b''.join([b''.join([a.bmps[a.STRIPE_WIDTH*(x+1)-1-k][64*PAD*j:64*PAD*(j+1)] for k in WIDTH]) for j in range(64)]))
else:
collage_builder = (lambda x, a=self, PAD=len(pad), WIDTH=range(w // 64): b''.join([b''.join([a.bmps[a.STRIPE_WIDTH*x+k][64*PAD*j:64*PAD*(j+1)] for k in WIDTH]) for j in range(64)]))
c_bmp += b''.join(map(collage_builder, range(h//64)))
self.b_write(os.path.join(dname, "%s_collage.bmp" % (self.fname)), self.b_export_bmp(w, h, c_bmp))
self.b_log(sys.stdout, False, 0, "Successfully exported collage file.")
return True
def b_export_bmp(self, width, height, data):
if not self.pal:
return b"BM"+pack("<L", len(data)+122)+b"\x00\x00\x00\x00\x7A\x00\x00\x00\x6C\x00\x00\x00"+pack("<L", width)+pack("<L", height)+b"\x01\x00\x20\x00\x03\x00\x00\x00"+pack("<L", len(data))+b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\x00\x00\xFF\x00\x00\xFF\x00\x00\x00\x00\x00\x00\xFF niW"+(b"\x00"*36)+b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+data
else:
return b"BM"+pack("<L", len(data)+0x36)+b"\x00\x00\x00\x00\x36\x04\x00\x00\x28\x00\x00\x00"+pack("<L", width)+pack("<L", height)+b"\x01\x00\x08\x00\x00\x00\x00\x00"+pack("<L", len(data)-0x400)+b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+data
def b_write(self, fname, data):
with open(fname, "wb") as f:
f.write(data)
return True
def b_flush(self):
self.bdat = ""
self.bmps = []
self.o_bmps = []
return True
if __name__ == "__main__":
prs = argparse.ArgumentParser(description="RDP Bitmap Cache parser (v. 2.00, 04/12/2020)")
prs.add_argument("-s", "--src", help="Specify the BMCache file or directory to process.", required=True)
prs.add_argument("-d", "--dest", help="Specify the directory where to store the extracted bitmaps.", required=True)
prs.add_argument("-c", "--count", help="Only extract the given number of bitmaps.", type=int, default=-1)
prs.add_argument("-v", "--verbose", help="Determine the amount of information displayed.", action="store_true", default=False)
prs.add_argument("-o", "--old", help="Extract the old bitmap data found in the BMCache file.", action="store_true", default=False)
prs.add_argument("-b", "--bitmap", help="Provide a big bitmap aggregating all the tiles.", action="store_true", default=False)
prs.add_argument("-w", "--width", help="Specify the number of tiles per line of the aggregated bitmap (default=64).", type=int, default=64)
args = prs.parse_args(sys.argv[1:])
bmcc = BMCContainer(verbose=args.verbose, count=args.count, old=args.old, big=args.bitmap, width=args.width)
if os.path.isdir(args.src):
sys.stdout.write("[+++] Processing a directory...%s" % (os.linesep))
src_files = []
for root, dirs, files in os.walk(args.src):
for f in files:
if f.rsplit(".", 1)[-1].upper() in ["BIN", "BMC"]:
if args.verbose:
sys.stdout.write("[---] File '%s' has been found.%s" % (os.path.join(root, f), os.linesep))
src_files.append(os.path.join(root, f))
if len(src_files) == 0:
sys.stderr.write("No suitable files were found under '%s' directory.%s" % (args.src, os.linesep))
exit(-1)
elif not os.path.isfile(args.src):
sys.stderr.write("Invalid -s/--src parameter; use -h/--help for help.%s" % (os.linesep))
exit(-1)
else:
sys.stdout.write("[+++] Processing a single file: '%s'.%s" % (args.src, os.linesep))
src_files = [args.src]
for src in src_files:
if bmcc.b_import(src):
bmcc.b_process()
bmcc.b_export(args.dest)
bmcc.b_flush()
del bmcc