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|
import os, struct, signal
from typing import Any, Dict
import lldb
from lldb.plugins.scripted_process import ScriptedProcess
from lldb.plugins.scripted_process import ScriptedThread
from lldb.plugins.scripted_process import ScriptedFrame
class DummyStopHook:
def __init__(self, target, args):
self.target = target
self.args = args
def handle_stop(self, exe_ctx, stream):
print("My DummyStopHook triggered. Printing args: \n%s" % self.args)
sp = exe_ctx.process.GetScriptedImplementation()
sp.handled_stop = True
class DummyScriptedProcess(ScriptedProcess):
memory = None
def __init__(self, exe_ctx: lldb.SBExecutionContext, args: lldb.SBStructuredData):
super().__init__(exe_ctx, args)
self.threads[0] = DummyScriptedThread(self, args)
self.memory = {}
addr = 0x500000000
debugger = self.target.GetDebugger()
index = debugger.GetIndexOfTarget(self.target)
self.memory[addr] = "Hello, target " + str(index)
self.handled_stop = False
def read_memory_at_address(
self, addr: int, size: int, error: lldb.SBError
) -> lldb.SBData:
data = lldb.SBData().CreateDataFromCString(
self.target.GetByteOrder(), self.target.GetCodeByteSize(), self.memory[addr]
)
return data
def write_memory_at_address(self, addr, data, error):
self.memory[addr] = data.GetString(error, 0)
return len(self.memory[addr]) + 1
def get_loaded_images(self):
return self.loaded_images
def get_process_id(self) -> int:
return 42
def should_stop(self) -> bool:
return True
def is_alive(self) -> bool:
return True
def get_scripted_thread_plugin(self):
return DummyScriptedThread.__module__ + "." + DummyScriptedThread.__name__
def my_super_secret_method(self):
if hasattr(self, "my_super_secret_member"):
return self.my_super_secret_member
else:
return None
class DummyScriptedThread(ScriptedThread):
def __init__(self, process, args):
super().__init__(process, args)
self.frames.append({"pc": 0x0100001B00})
self.frames.append(DummyScriptedFrame(self, args, len(self.frames), "baz123"))
self.frames.append(DummyScriptedFrame(self, args, len(self.frames), "bar"))
self.frames.append(DummyScriptedFrame(self, args, len(self.frames), "foo"))
def get_thread_id(self) -> int:
return 0x19
def get_name(self) -> str:
return DummyScriptedThread.__name__ + ".thread-1"
def get_state(self) -> int:
return lldb.eStateStopped
def get_stop_reason(self) -> Dict[str, Any]:
return {"type": lldb.eStopReasonTrace, "data": {}}
def get_register_context(self) -> str:
return struct.pack(
"21Q",
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
)
class DummyScriptedFrame(ScriptedFrame):
def __init__(self, thread, args, id, name, sym_ctx=None):
super().__init__(thread, args)
self.id = id
self.name = name
self.sym_ctx = sym_ctx
def get_id(self):
return self.id
def get_function_name(self):
return self.name
def get_register_context(self) -> str:
return struct.pack(
"21Q",
0x10001,
0x10002,
0x10003,
0x10004,
0x10005,
0x10006,
0x10007,
0x10008,
0x10009,
0x100010,
0x100011,
0x100012,
0x100013,
0x100014,
0x100015,
0x100016,
0x100017,
0x100018,
0x100019,
0x100020,
0x100021,
)
def get_symbol_context(self):
def get_symbol_context_for_function(func_name):
module = self.target.FindModule(self.target.GetExecutable())
if not module.IsValid():
return None
sym_ctx_list = module.FindFunctions(func_name)
if not sym_ctx_list.IsValid() or sym_ctx_list.GetSize() == 0:
return None
return sym_ctx_list.GetContextAtIndex(0)
return (
self.sym_ctx if self.sym_ctx else get_symbol_context_for_function(self.name)
)
def get_scripted_frame_plugin(self):
return DummyScriptedFrame.__module__ + "." + DummyScriptedFrame.__name__
def __lldb_init_module(debugger, dict):
# This is used when loading the script in an interactive debug session to
# automatically, register the stop-hook and launch the scripted process.
if not "SKIP_SCRIPTED_PROCESS_LAUNCH" in os.environ:
debugger.HandleCommand(
"target stop-hook add -k first -v 1 -k second -v 2 -P %s.%s"
% (__name__, DummyStopHook.__name__)
)
debugger.HandleCommand(
"process launch -C %s.%s" % (__name__, DummyScriptedProcess.__name__)
)
else:
print(
"Name of the class that will manage the scripted process: '%s.%s'"
% (__name__, DummyScriptedProcess.__name__)
)
print(
"Name of the class that will manage the stop-hook: '%s.%s'"
% (__name__, DummyStopHook.__name__)
)
|
