Martin Michelsen
51 lines
1.6 KiB
Python
Executable File
51 lines
1.6 KiB
Python
Executable File
#!/bin/env python3
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import argparse
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import os
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import subprocess
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import sys
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def get_ip_address(ifname):
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data = subprocess.check_output(["ifconfig", ifname])
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for line in data.splitlines():
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line = line.strip()
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if line.startswith(b"inet "):
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return line.split()[1].decode("ascii")
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raise RuntimeError("cannot get address for interface " + ifname)
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def main(argv):
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parser = argparse.ArgumentParser()
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parser.add_argument("--pid", "-p", type=int, default=0)
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parser.add_argument("orig_destination", type=str)
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parser.add_argument("new_destination", type=str, default=None, nargs="?")
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args = parser.parse_args()
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if os.geteuid() != 0:
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raise RuntimeError("You must use sudo to run this script")
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new_destination = args.new_destination or get_ip_address("en0")
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proc_arg = "Flycast.app" if args.pid == 0 else str(args.pid)
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print(f'Finding occurrences of "{args.orig_destination}"')
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addresses_str = subprocess.check_output(
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["memwatch", proc_arg, "find", f'"{args.orig_destination}"']
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)
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for line in addresses_str.splitlines():
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# line is like '(0) 00007FFF038500A0 (rw-)' (we care only about the address)
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tokens = line.split()
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if len(tokens) != 3:
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continue
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print(
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f'Replacing "{args.orig_destination}" with "{new_destination}" at {tokens[1]} in Flycast'
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)
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subprocess.check_call(
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["memwatch", proc_arg, "write", tokens[1], f'"{new_destination}" 00']
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)
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return 0
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if __name__ == "__main__":
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sys.exit(main(sys.argv))
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