Force unloading IDA plugin (or not)

unload.py

from pkg.internal_api import _ida_lib
import ctypes


functype, lib = _ida_lib()


class qstring(ctypes.Structure):
    _fields_ = [
        ('array', ctypes.c_void_p),
        ('n', ctypes.c_size_t),
        ('alloc', ctypes.c_size_t)
    ]

call_func_type = functype(ctypes.c_bool, ctypes.c_void_p, ctypes.c_char_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.POINTER(qstring))
call_method_type = functype(ctypes.c_bool, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_char_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.POINTER(qstring))


class method_type(ctypes.Union):
    _fields_ = [
        ('ptr', ctypes.c_void_p),
        ('func', call_method_type)
    ]


class _extlang_t(ctypes.Structure):
    _fields_ = [
        ('size', ctypes.c_size_t),
        ('flags', ctypes.c_uint),
        ('refcnt', ctypes.c_int),
        ('name', ctypes.c_char_p),
        ('fileext', ctypes.c_char_p),
        ('highlighter', ctypes.c_void_p),
        ('compile_expr', ctypes.c_void_p),
        ('compile_file', ctypes.c_void_p),
        ('call_func', call_func_type),
        ('eval_expr', ctypes.c_void_p),
        ('eval_snippet', ctypes.c_void_p),
        ('create_object', ctypes.c_void_p),
        ('get_attr', ctypes.c_void_p),
        ('set_attr', ctypes.c_void_p),
        ('call_method', method_type),
        ('load_procmod', ctypes.c_void_p),
        ('unload_procmod', ctypes.c_void_p)
    ]

class plugin_t(ctypes.Structure):
    _fields_ = [
        ('version', ctypes.c_int32),
        ('flags', ctypes.c_int32),
        ('init', functype(ctypes.c_int32)),
        ('term', functype(None)),
        ('run', functype(ctypes.c_bool, ctypes.c_size_t)),
        ('comment', ctypes.c_char_p),
        ('help', ctypes.c_char_p),
        ('wanted_name', ctypes.c_char_p),
        ('wanted_hotkey', ctypes.c_char_p),
        ('reserved1', ctypes.c_void_p),
        ('reserved2', ctypes.c_void_p),
        ('reserved3', ctypes.c_void_p),
        ('extlang', ctypes.POINTER(_extlang_t))
    ]


@functype(ctypes.c_bool, ctypes.c_size_t)
def nop(arg):
    print arg
    return True

def nop_extlang(extlang, original):
    @call_method_type
    def handler(*args):
        extlang.call_method.ptr = original
        return True
    return handler

find_plugin = lib.find_plugin
find_plugin.restype = ctypes.POINTER(plugin_t)
find_plugin.argtypes = [ctypes.c_char_p, ctypes.c_bool]

run_plugin = lib.run_plugin
run_plugin.restype = ctypes.c_bool
run_plugin.argtypes = [ctypes.POINTER(plugin_t), ctypes.c_size_t]

path = os.path.join(pkg.local('community-headers').path, 'plugins', 'main.py')
p = find_plugin(path, False)
if p:
    if p[0].flags & 0x8000:
        call_method = p[0].extlang[0].call_method.ptr
        p[0].extlang[0].call_method.func = nop_extlang(p[0].extlang[0], call_method)
    else:
        p[0].run = nop
    p[0].flags &= ~0x20
    p[0].flags |= 8
    run_plugin(p, 0)
    print p