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update flycast patch script to support multiple instances

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This commit is contained in:
Martin Michelsen
2023-12-16 21:03:50 -08:00
parent 209ccd6726
commit 9fa25d6337
1 changed files with 35 additions and 24 deletions
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patch_flycast_memory.py
+35 -24
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@@ -1,39 +1,50 @@
#!/bin/env python3 #!/bin/env python3
import argparse
import os import os
import subprocess import subprocess
import sys import sys
def get_ip_address(ifname): def get_ip_address(ifname):
data = subprocess.check_output(['ifconfig', ifname]) data = subprocess.check_output(["ifconfig", ifname])
for line in data.splitlines(): for line in data.splitlines():
line = line.strip() line = line.strip()
if line.startswith(b'inet '): if line.startswith(b"inet "):
return line.split()[1].decode('ascii') return line.split()[1].decode("ascii")
raise RuntimeError('cannot get address for interface ' + ifname) raise RuntimeError("cannot get address for interface " + ifname)
def main(argv): def main(argv):
if len(argv) < 2: parser = argparse.ArgumentParser()
raise RuntimeError(f'Usage: {argv[0]} <original-destination> [new-destination]') parser.add_argument("--pid", "-p", type=int, default=0)
if os.geteuid() != 0: parser.add_argument("orig_destination", type=str)
raise RuntimeError('You must use sudo to run this script') parser.add_argument("new_destination", type=str, default=None, nargs="?")
original_destination = argv[1] args = parser.parse_args()
new_destination = argv[2] if len(argv) > 2 else get_ip_address('en0')
print(f'Finding occurrences of \"{original_destination}\"') if os.geteuid() != 0:
addresses_str = subprocess.check_output(['memwatch', 'Flycast.app', 'find', f'\"{original_destination}\"']) raise RuntimeError("You must use sudo to run this script")
for line in addresses_str.splitlines(): new_destination = args.new_destination or get_ip_address("en0")
# line is like '(0) 00007FFF038500A0 (rw-)' (we care only about the address) proc_arg = "Flycast.app" if args.pid == 0 else str(args.pid)
tokens = line.split()
if len(tokens) != 3:
continue
print(f'Replacing \"{original_destination}\" with \"{new_destination}\" at {tokens[1]} in Flycast')
subprocess.check_call(['memwatch', 'Flycast.app', 'write', tokens[1], f'\"{new_destination}\" 00'])
return 0 print(f'Finding occurrences of "{args.orig_destination}"')
addresses_str = subprocess.check_output(
["memwatch", proc_arg, "find", f'"{args.orig_destination}"']
)
for line in addresses_str.splitlines():
# line is like '(0) 00007FFF038500A0 (rw-)' (we care only about the address)
tokens = line.split()
if len(tokens) != 3:
continue
print(
f'Replacing "{args.orig_destination}" with "{new_destination}" at {tokens[1]} in Flycast'
)
subprocess.check_call(
["memwatch", proc_arg, "write", tokens[1], f'"{new_destination}" 00']
)
return 0
if __name__ == '__main__': if __name__ == "__main__":
sys.exit(main(sys.argv)) sys.exit(main(sys.argv))