mirror of
https://github.com/barronwaffles/dwc_network_server_emulator.git
synced 2026-07-14 07:01:58 -05:00
219 lines
7.0 KiB
Python
219 lines
7.0 KiB
Python
# DWC Network Server Emulator
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# Copyright (C) 2014 polaris-
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# Copyright (C) 2014 msoucy
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging
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import logging.handlers
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import random
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import string
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import struct
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import ctypes
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import os
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def generate_random_str_from_set(ln, chs):
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return ''.join(random.choice(chs) for _ in range(ln))
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def generate_random_str(ln, chs=""):
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return generate_random_str_from_set(ln, chs or (string.ascii_letters + string.digits))
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def generate_random_number_str(ln):
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return generate_random_str_from_set(ln, string.digits)
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def generate_random_hex_str(ln):
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return generate_random_str_from_set(ln, string.hexdigits.lower())
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# Code: Tetris DS @ 020573F4
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def calculate_crc8(inp):
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crc_table = [
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0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D,
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0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65, 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D,
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0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
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0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD,
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0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2, 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA,
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0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
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0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A,
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0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42, 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A,
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0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
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0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4,
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0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C, 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44,
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0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
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0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63,
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0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B, 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13,
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0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
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0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3
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]
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crc = 0
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for b in inp:
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crc = crc_table[(b ^ crc) & 0xff]
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return crc
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def base32_encode(num, reverse=True):
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alpha = "0123456789abcdefghijklmnopqrstuv"
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encoded = ""
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while num > 0:
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encoded += alpha[num & 0x1f]
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num = num >> 5
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while len(encoded) < 9:
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encoded += "0"
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if reverse == True:
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encoded = encoded[::-1] # Reverse string
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return encoded
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def base32_decode(s, reverse=False):
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alpha = "0123456789abcdefghijklmnopqrstuv"
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if reverse == True:
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s = s[::-1] # Reverse string
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return reduce(lambda orig, b: ((orig<<5)|alpha.index(b)), s, 0)
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# Number routines
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def get_num_from_bytes(data, idx, fmt, bigEndian=False):
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return struct.unpack_from("<>"[bigEndian] + fmt, buffer(bytearray(data)), idx)[0]
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# Instead of passing slices, pass the buffer and index so we can calculate
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# the length automatically.
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def get_short_signed(data, idx, be=False):
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return get_num_from_bytes(data, idx, 'h', be)
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def get_short(data, idx, be=False):
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return get_num_from_bytes(data, idx, 'H', be)
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def get_int_signed(data, idx, be=False):
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return get_num_from_bytes(data, idx, 'i', be)
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def get_int(data, idx, be=False):
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return get_num_from_bytes(data, idx, 'I', be)
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def get_ip(data, idx, be=False):
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return ctypes.c_int32(get_int(data, idx, be)).value
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def get_string(data, idx):
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data = data[idx:]
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end = data.index('\x00')
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return str(''.join(data[:end]))
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def get_bytes_from_num(num, fmt, bigEndian=False):
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return struct.pack("<>"[bigEndian] + fmt, num)
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def get_bytes_from_short_signed(num, be=False):
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return get_bytes_from_num(num, 'h', be)
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def get_bytes_from_short(num, be=False):
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return get_bytes_from_num(num, 'H', be)
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def get_bytes_from_int_signed(num, be=False):
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return get_bytes_from_num(num, 'i', be)
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def get_bytes_from_int(num, be=False):
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return get_bytes_from_num(num, 'I', be)
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# For server logging
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def create_logger(loggername, filename, level, log_to_console, log_to_file):
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log_folder = "logs"
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# Create log folder if it doesn't exist
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if not os.path.exists(log_folder):
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os.makedirs(log_folder)
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# Build full path to log file
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filename = os.path.join(log_folder, filename)
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logging.addLevelName(-1, "TRACE")
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fmt = "[%(asctime)s | " + loggername + "] %(message)s"
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date_format = "%Y-%m-%d %H:%M:%S"
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#logging.basicConfig(format=format, datefmt=date_format)
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logger = logging.getLogger(loggername)
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logger.setLevel(level)
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# Only needed when logging.basicConfig isn't set.
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if log_to_console == True:
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console_logger = logging.StreamHandler()
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console_logger.setFormatter(
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logging.Formatter(fmt, datefmt=date_format))
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logger.addHandler(console_logger)
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if log_to_file == True and filename != "":
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# Use a rotating log set to rotate every night at midnight with a max of 10 backups
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file_logger = logging.handlers.TimedRotatingFileHandler(filename, when='midnight', backupCount=10) #logging.FileHandler(filename)
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file_logger.setFormatter(logging.Formatter(fmt, datefmt=date_format))
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logger.addHandler(file_logger)
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return logger
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def print_hex(data, cols=16):
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print pretty_print_hex(data, cols)
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def pretty_print_hex(orig_data, cols=16):
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data = bytearray(orig_data)
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output = "\n"
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for i in range(len(data) / cols + 1):
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output += "%08x | " % (i * 16)
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c = 0
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for x in range(cols):
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if (i * cols + x + 1) > len(data):
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break
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output += "%02x " % data[i * cols + x]
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c += 1
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c = cols - c
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output += " " * (c * 3 + 1)
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for x in range(cols):
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if (i * cols + x + 1) > len(data):
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break
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if data[i * cols + x] < 0x21 or data[i * cols + x] >= 0x7f:
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output += "."
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else:
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output += "%c" % data[i * cols + x]
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output += "\n"
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return output
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