503 lines
25 KiB
Python
503 lines
25 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from typing import Optional, TypedDict, NotRequired
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from socketserver import UnixStreamServer, StreamRequestHandler, ThreadingMixIn
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import os
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import re
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type Pointer = int
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type PointerTo[T] = tuple[Pointer, T]
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type Constant = tuple[int, str]
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type Flags = tuple[int, list[str]]
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StructTimeSpec = TypedDict('StructTimeSpec', {'tv_sec': int, 'tv_nsec': int})
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StructSigAction = TypedDict('StructSigAction', {'sa_flags': Flags, 'sa_handler': NotRequired[Pointer], 'sa_sigaction': NotRequired[Pointer], 'sa_mask': list[str]})
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StructSockAddr = TypedDict('StructSockAddr', {'sa_family': Constant, 'sa_data': NotRequired[bytes],
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'sun_path': NotRequired[bytes],
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'sin_addr': NotRequired[bytes], 'sin_port': NotRequired[int],
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'sin6_addr': NotRequired[bytes], 'sin6_port': NotRequired[int], 'sin6_scope_id': NotRequired[int]})
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StructAddrInfo = TypedDict('StructAddrInfo', {})
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StructMsgHdr = TypedDict('StructMsgHdr', {})
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class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
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pass
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class Handler(StreamRequestHandler):
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pid: Optional[int]
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path: Optional[str]
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stack: list[tuple[int, str, tuple]]
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ret_addr: int
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def before(self) -> None: pass
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def after(self) -> None: pass
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def before_fallback(self, func_name: str, *args) -> str: pass
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def after_fallback(self, func_name: str, *args, **kwargs) -> None: pass
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def handle(self):
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first = self.rfile.readline()
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meta = {a[0]: a[1] for a in [tuple(p.decode('utf-8').split(':', 1)) for p in first.split(b' ', 3)[3].strip().split(b';')]}
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self.pid = int(meta['PID']) if 'PID' in meta else None
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self.path = meta['PATH'] if 'PATH' in meta else None
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self.stack = []
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print(f'Process with PID {self.pid} connected ({self.path})')
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self.before()
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try:
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while True:
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msg = self.rfile.readline()
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if not msg:
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return
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self.handle_msg(msg)
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finally:
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self.after()
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@staticmethod
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def parse_str(argument: str) -> tuple[str or bytes, int]:
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if not ((len(argument) >= 2 and argument[0] == '"') or (len(argument) >= 3 and argument[0] == 'b' and argument[1] == '"')):
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raise ValueError()
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idx = 1
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esc, fin = False, False
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data = b'' if argument[0] == 'b' else ''
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tmp = None
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for ch in argument[1:]:
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idx += 1
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if fin:
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if ch in (' ', '\t'):
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continue
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elif ch in (',', ']'):
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idx -= 1
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break
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elif tmp:
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tmp += ch
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if len(tmp) == 2:
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data += bytes([int(tmp, 16)]) if argument[0] == 'b' else chr(int(tmp, 16))
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tmp = None
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elif esc:
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if ch in ('\\', '"'):
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data += ch.encode('ascii') if argument[0] == 'b' else ch
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elif ch == 'x':
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tmp = ''
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esc = False
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else:
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raise ValueError()
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elif ch == '"':
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fin = True
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elif ch == '\\':
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esc = True
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else:
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data += ch.encode('utf-8') if argument[0] == 'b' else ch
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if not fin:
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raise ValueError()
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return data, idx
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@staticmethod
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def parse_arg(argument: str) -> tuple[any, int]:
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if argument == '':
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return None, 0
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m = re.match(r'^\s*(\(nil\)|NULL|null|nullptr)\s*(,|$)', argument)
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if m:
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return 0, len(m.group(0))
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m = re.match(r'^\s*(.*?)([,:]|$)', argument)
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a, e = m.group(1), m.group(2)
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idx = len(m.group(0))
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if a.startswith('0x'):
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val = int(a[2:], 16)
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elif a.startswith('0') and len(a) > 1:
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val = int(a[1:], 8)
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else:
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val = int(a, 10)
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if e in (',', ''):
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return val, idx
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if argument[idx] == '[':
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idx += 1
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l, i = Handler.parse_args(argument[idx:])
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idx += i
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if idx < len(argument) and argument[idx] == ',':
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idx += 1
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return (val, list(l)), idx
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elif argument[idx] == '|':
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m = re.match(r'^[| A-Za-z0-9_]*', argument[idx:])
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flags = m.group(0)
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if not flags.startswith('|') or not flags.endswith('|'):
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raise ValueError()
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idx += len(flags)
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if idx < len(argument) and argument[idx] == ',':
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idx += 1
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flags = [f.strip() for f in flags[1:-1].split('|') if len(f.strip()) > 0]
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return (val, flags), idx
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elif argument[idx] == '"':
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s, i = Handler.parse_str(argument[idx:])
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idx += i
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if idx < len(argument) and argument[idx] == ',':
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idx += 1
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return (val, s), idx
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elif argument[idx] == '{':
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m = re.match(r'^[^}]*', argument[idx:])
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value = m.group(0)
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if not value.startswith('{') or not value.endswith('}'):
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raise ValueError()
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idx += len(value)
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if idx < len(argument) and argument[idx] == ',':
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idx += 1
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entries = {}
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for e in [v.strip() for v in value[1:-1].split(',') if len(e.strip()) > 0]:
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k, v = e.split(':', 1)
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entries[k.strip()] = int(v.strip(), 0)
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return (val, entries), idx
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else:
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raise ValueError()
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@staticmethod
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def parse_args(arguments: str) -> tuple[tuple, int]:
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args = []
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idx = 0
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while idx < len(arguments):
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if arguments[idx] == ']':
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idx += 1
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break
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val, i = Handler.parse_arg(arguments[idx:])
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args.append(val)
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idx += i
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return tuple(args), idx
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def handle_msg(self, msg: bytes):
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timestamp, pid, tid, data = msg.rstrip(b'\n').split(b' ', 3)
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if not data.startswith(b'return ') and not data == b'return':
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call = data.decode('utf-8')
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print(f'[{self.pid}] {call}')
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func_name = call[:call.find('(')]
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self.ret_addr = int(call[call.rfind(':') + 1:], 0)
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args, _ = Handler.parse_args(call[call.find('(') + 1:call.rfind(':') - 1])
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self.stack.append((self.ret_addr, func_name, args))
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try:
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func = getattr(self, f'before_{func_name}')
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if not callable(func):
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func = None
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except AttributeError:
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func = None
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try:
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if func is None:
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raise NotImplementedError()
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command = func(*args) or self.before_fallback(func_name, *args) or 'ok'
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except NotImplementedError:
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command = self.before_fallback(func_name, *args) or 'ok'
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print(f'[{self.pid}] -> {command}')
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self.wfile.write(command.encode('utf-8') + b'\n')
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else:
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ret = data.decode('utf-8')
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ret_value, _ = Handler.parse_arg(ret[7:].split(';')[0])
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self.ret_addr, func_name, args = self.stack.pop()
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try:
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func = getattr(self, f'after_{func_name}')
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if not callable(func):
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func = None
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except AttributeError:
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func = None
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try:
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if func is None:
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raise NotImplementedError()
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if ret_value is None:
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func(*args)
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else:
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func(*args, ret_value)
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except NotImplementedError:
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if ret_value is None:
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self.after_fallback(func_name, *args)
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else:
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self.after_fallback(func_name, *args, ret_value)
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print(f'[{self.pid}] -> {ret}')
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def before_malloc(self, size: int) -> str:
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raise NotImplementedError()
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def after_malloc(self, size: int,
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_calloc(self, nmemb: int, size: int) -> str:
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raise NotImplementedError()
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def after_calloc(self, nmemb: int, size: int,
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_realloc(self, ptr: Pointer, size: int) -> str:
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raise NotImplementedError()
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def after_realloc(self, ptr: Pointer, size: int,
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_reallocarray(self, ptr: Pointer, nmemb: int, size: int) -> str:
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raise NotImplementedError()
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def after_reallocarray(self, ptr: Pointer, nmemb: int, size: int,
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_free(self, ptr: Pointer) -> str:
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raise NotImplementedError()
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def after_free(self, ptr: Pointer) -> None:
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raise NotImplementedError()
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def before_getopt(self, argc: int, argv: PointerTo[list[PointerTo[bytes]]], optstring: PointerTo[bytes]) -> str:
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raise NotImplementedError()
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def after_getopt(self, argc: int, argv: PointerTo[list[PointerTo[bytes]]], optstring: PointerTo[bytes],
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ret_value: int) -> None:
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raise NotImplementedError()
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def before_exit(self, status: int) -> str:
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raise NotImplementedError()
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def after_exit(self, status: int) -> None:
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raise NotImplementedError()
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def before_read(self, fildes: int, buf_ptr: Pointer, nbyte: int) -> str:
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raise NotImplementedError()
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def after_read(self, fildes: int, buf_ptr: Pointer, nbyte: int,
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ret_value: int, errno: str = None, buf: PointerTo[bytes] = None) -> None:
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raise NotImplementedError()
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def before_pread(self, fildes: int, buf_ptr: Pointer, nbyte: int, offset: int) -> str:
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raise NotImplementedError()
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def after_pread(self, fildes: int, buf_ptr: Pointer, nbyte: int, offset: int,
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ret_value: int, errno: str = None, buf: PointerTo[bytes] = None) -> None:
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raise NotImplementedError()
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def before_write(self, fildes: int, buf: PointerTo[bytes], nbyte: int) -> str:
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raise NotImplementedError()
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def after_write(self, fildes: int, buf: PointerTo[bytes], nbyte: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_pwrite(self, fildes: int, buf: PointerTo[bytes], nbyte: int, offste: int) -> str:
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raise NotImplementedError()
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def after_pwrite(self, fildes: int, buf: PointerTo[bytes], nbyte: int, offste: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_close(self, fildes: int) -> str:
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raise NotImplementedError()
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def after_close(self, fildes: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sigaction(self, sig: Constant, act: PointerTo[StructSigAction], oact_ptr: Pointer) -> str:
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raise NotImplementedError()
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def after_sigaction(self, sig: Constant, act: PointerTo[StructSigAction], oact_ptr: Pointer,
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ret_value: int, errno: str = None, oact: StructSigAction = None) -> None:
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raise NotImplementedError()
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def before_sem_init(self, sem: Pointer, pshared: int, value: int) -> str:
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raise NotImplementedError()
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def after_sem_init(self, sem: Pointer, pshared: int, value: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_open(self, name: str, oflag: Flags, mode: Optional[int], value: Optional[int]) -> str:
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raise NotImplementedError()
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def after_sem_open(self, name: str, oflag: Flags, mode: Optional[int], value: Optional[int],
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_post(self, sem: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_post(self, sem: Pointer,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_wait(self, sem: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_wait(self, sem: Pointer,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_trywait(self, sem: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_trywait(self, sem: Pointer,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_timedwait(self, sem: Pointer, abs_timeout: PointerTo[StructTimeSpec]) -> str:
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raise NotImplementedError()
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def after_sem_timedwait(self, sem: Pointer, abs_timeout: PointerTo[StructTimeSpec],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_getvalue(self, sem: Pointer, value_ptr: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_getvalue(self, sem: Pointer, value_ptr: Pointer,
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ret_value: int, errno: str = None, value: int = None) -> None:
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raise NotImplementedError()
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def before_sem_close(self, sem: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_close(self, sem: Pointer,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_unlink(self, name: PointerTo[bytes]) -> str:
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raise NotImplementedError()
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def after_sem_unlink(self, name: PointerTo[bytes],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_sem_destroy(self, sem: Pointer) -> str:
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raise NotImplementedError()
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def after_sem_destroy(self, sem: Pointer,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_shm_open(self, name: PointerTo[bytes], oflag: Flags, mode: int) -> str:
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raise NotImplementedError()
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def after_shm_open(self, name: PointerTo[bytes], oflag: Flags, mode: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_shm_unlink(self, name: PointerTo[bytes]) -> str:
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raise NotImplementedError()
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def after_shm_unlink(self, name: PointerTo[bytes],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_mmap(self, addr: Pointer, length: int, prot: Flags, flags: Flags, fildes: int, off: int) -> str:
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raise NotImplementedError()
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def after_mmap(self, addr: Pointer, length: int, prot: Flags, flags: Flags, fildes: int, off: int,
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ret_value: Pointer, errno: str = None) -> None:
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raise NotImplementedError()
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def before_munmap(self, addr: Pointer, length: int) -> str:
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raise NotImplementedError()
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def after_munmap(self, addr: Pointer, length: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_ftruncate(self, fildes: int, length: int) -> str:
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raise NotImplementedError()
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def after_ftruncate(self, fildes: int, length: int,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_fork(self) -> str:
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raise NotImplementedError()
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def after_fork(self,
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_wait(self, stat_loc: Pointer) -> str:
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raise NotImplementedError()
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def after_wait(self, stat_loc: Pointer,
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ret_value: int, errno: str = None, stat: int = None) -> None:
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raise NotImplementedError()
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def before_waitpid(self, pid: int, stat_loc: Pointer, options: Flags) -> str:
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raise NotImplementedError()
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def after_waitpid(self, pid: int, stat_loc: Pointer, options: Flags,
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ret_value: int, errno: str = None, stat: int = None) -> None:
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raise NotImplementedError()
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def before_execl(self, pathname: PointerTo[bytes], *args: list[PointerTo[bytes]]) -> str:
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raise NotImplementedError()
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def after_execl(self, pathname: PointerTo[bytes], *args: list[PointerTo[bytes]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execlp(self, file: PointerTo[bytes], *args: list[PointerTo[bytes]]) -> str:
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raise NotImplementedError()
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def after_execlp(self, file: PointerTo[bytes], *args: list[PointerTo[bytes]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execle(self, pathname: PointerTo[bytes], *args: list[PointerTo[bytes]], envp: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_execle(self, pathname: PointerTo[bytes], *args: list[PointerTo[bytes]], envp: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execv(self, pathname: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_execv(self, pathname: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execvp(self, file: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_execvp(self, file: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execvpe(self, file: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_execvpe(self, file: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_execve(self, pathname: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_execve(self, pathname: PointerTo[bytes], argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
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def before_fexecve(self, fd: int, argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]]) -> str:
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raise NotImplementedError()
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def after_fexecve(self, fd: int, argv: PointerTo[list[PointerTo[bytes]]], envp: PointerTo[list[PointerTo[bytes]]],
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ret_value: int, errno: str = None) -> None:
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raise NotImplementedError()
|
|
def before_pipe(self, fildes_ptr: Pointer) -> str:
|
|
raise NotImplementedError()
|
|
def after_pipe(self, fildes_ptr: Pointer,
|
|
ret_value: int, errno: str = None, fildes: list[int] = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_dup(self, oldfd: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_dup(self, oldfd: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_dup2(self, oldfd: int, newfd: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_dup2(self, oldfd: int, newfd: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_dup3(self, oldfd: int, newfd: int, flags: Flags) -> str:
|
|
raise NotImplementedError()
|
|
def after_dup3(self, oldfd: int, newfd: int, flags: Flags,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_socket(self, domain: Constant, socktype: Constant, protocol: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_socket(self, domain: Constant, socktype: Constant, protocol: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_bind(self, sockfd: int, address: PointerTo[StructSockAddr], address_len: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_bind(self, sockfd: int, address: PointerTo[StructSockAddr], address_len: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_listen(self, sockfd: int, backlog: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_listen(self, sockfd: int, backlog: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_accept(self, sockfd: int, address_ptr: Pointer, address_len_ptr: Pointer) -> str:
|
|
raise NotImplementedError()
|
|
def after_accept(self, sockfd: int, address_ptr: Pointer, address_len_ptr: Pointer,
|
|
ret_value: int, errno: str = None, address: PointerTo[StructSockAddr] = None, address_len: PointerTo[StructSockAddr] = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_connect(self, sockfd: int, address: PointerTo[StructSockAddr], address_len: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_connect(self, sockfd: int, address: PointerTo[StructSockAddr], address_len: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_getaddrinfo(self, node: PointerTo[bytes], service: PointerTo[bytes], hints: PointerTo[StructAddrInfo], res: Pointer) -> str:
|
|
raise NotImplementedError()
|
|
def after_getaddrinfo(self, node: PointerTo[bytes], service: PointerTo[bytes], hints: PointerTo[StructAddrInfo], res: Pointer,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_freeaddrinfo(self, res: Pointer) -> str:
|
|
raise NotImplementedError()
|
|
def after_freeaddrinfo(self, res: Pointer) -> None:
|
|
raise NotImplementedError()
|
|
def before_send(self, sockfd: int, buf: PointerTo[bytes], length: int, flags: Flags) -> str:
|
|
raise NotImplementedError()
|
|
def after_send(self, sockfd: int, buf: PointerTo[bytes], length: int, flags: Flags,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_sendto(self, sockfd: int, buf: PointerTo[bytes], length: int, flags: Flags, dest_addr: PointerTo[StructSockAddr], addrlen: int) -> str:
|
|
raise NotImplementedError()
|
|
def after_sendto(self, sockfd: int, buf: PointerTo[bytes], length: int, flags: Flags, dest_addr: PointerTo[StructSockAddr], addrlen: int,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_sendmsg(self, sockfd: int, message: StructMsgHdr, flags: Flags) -> str:
|
|
raise NotImplementedError()
|
|
def after_sendmsg(self, sockfd: int, message: StructMsgHdr, flags: Flags,
|
|
ret_value: int, errno: str = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_recv(self, sockfd: int, buf_ptr: Pointer, size: int, flags: Flags) -> str:
|
|
raise NotImplementedError()
|
|
def after_recv(self, sockfd: int, buf_ptr: Pointer, size: int, flags: Flags,
|
|
ret_value: int, errno: str = None, buf: PointerTo[bytes] = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_recvfrom(self, sockfd: int, buf_ptr: Pointer, size: int, flags: Flags, src_addr_ptr: Pointer, addrlen_ptr: Pointer) -> str:
|
|
raise NotImplementedError()
|
|
def after_recvfrom(self, sockfd: int, buf_ptr: Pointer, size: int, flags: Flags, src_addr_ptr: Pointer, addrlen_ptr: Pointer,
|
|
ret_value: int, errno: str = None, buf: PointerTo[bytes] = None, src_addr: PointerTo[StructSockAddr] = None, addrlen: int = None) -> None:
|
|
raise NotImplementedError()
|
|
def before_recvmsg(self, sockfd: int, message_ptr: Pointer, flags: Flags) -> str:
|
|
raise NotImplementedError()
|
|
def after_recvmsg(self, sockfd: int, message_ptr: Pointer, flags: Flags,
|
|
ret_value: int, errno: str = None, message: PointerTo[StructMsgHdr] = None) -> None:
|
|
raise NotImplementedError()
|
|
|
|
|
|
def intercept(socket: str, handler: type[Handler]) -> None:
|
|
try:
|
|
with ThreadedUnixStreamServer(socket, handler) as server:
|
|
server.serve_forever()
|
|
except KeyboardInterrupt:
|
|
print('\nBye')
|
|
server.shutdown()
|
|
finally:
|
|
try:
|
|
os.unlink(socket)
|
|
except FileNotFoundError:
|
|
pass
|