mirror of
https://github.com/minecraft-linux/mcpelauncher-versiondb.git
synced 2024-09-22 03:51:00 +00:00
43 lines
1.6 KiB
Python
43 lines
1.6 KiB
Python
import subprocess
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import re
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import struct
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split_regex = re.compile("^\s*\d*: ([0-9a-f]{8})\s*\d+ \w+\s+\w+\s+\w+\s+\w+ (.*)$")
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def get_value_at(file, offset, size, format):
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if offset == None or offset < 0:
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return -1
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file.seek(offset)
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return struct.unpack(format, file.read(size))[0]
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def get_so_info(path):
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cmd = subprocess.Popen(['readelf', '-Ws', path], stdout=subprocess.PIPE)
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beta_off = None
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protocol_ver_off = None
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chunk_format_ver_off = None
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subchunk_format_ver_off = None
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for line in cmd.stdout:
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parts = split_regex.match(line.decode('utf-8'))
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if parts == None:
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continue
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symbol = parts.group(2)
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if symbol == "_ZN15SharedConstants6IsBetaE":
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beta_off = int(parts.group(1), 16)
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if symbol == "_ZN15SharedConstants22NetworkProtocolVersionE":
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protocol_ver_off = int(parts.group(1), 16)
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if symbol == "_ZN15SharedConstants23CurrentLevelChunkFormatE":
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chunk_format_ver_off = int(parts.group(1), 16)
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if symbol == "_ZN15SharedConstants21CurrentSubChunkFormatE":
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subchunk_format_ver_off = int(parts.group(1), 16)
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if beta_off == None:
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return False
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with open(path, 'rb') as file:
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return {
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"is_beta": (get_value_at(file, beta_off, 1, 'B') == 1),
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"protocol_ver": get_value_at(file, protocol_ver_off, 4, 'i'),
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"chunk_format_ver": get_value_at(file, chunk_format_ver_off, 1, 'B'),
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"subchunk_format_ver": get_value_at(file, subchunk_format_ver_off, 1, 'B')
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}
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