import pytest
import textwrap

import windows
import windows.generated_def as gdef
import windows.native_exec.simple_x86 as x86
import windows.native_exec.simple_x64 as x64

from pfwtest import *

pytestmark = pytest.mark.usefixtures('check_for_gc_garbage')



@process_syswow_only
class TestSyswowCurrentProcess(object):
    def test_exec_syswow(self):
        x64_code = x64.assemble("mov rax, 0x4040404040404040; mov r11, 0x0202020202020202; add rax, r11; ret")
        res = windows.syswow64.execute_64bits_code_from_syswow(x64_code)
        assert res == 0x4242424242424242

    def test_self_pebsyswow(self):
        peb64 = windows.current_process.peb_syswow
        modules_names = [m.name for m in peb64.modules]
        assert "wow64.dll" in modules_names
        # Parsing
        wow64 = [m for m in peb64.modules if m.name == "wow64.dll"][0]
        assert "Wow64LdrpInitialize" in wow64.pe.exports

@python_injection
@windows_64bit_only
class TestSyswowRemoteProcess(object):
    def test_remote_pebsyswow(self, proc32):
        peb64 = proc32.peb_syswow
        modules_names = [m.name for m in peb64.modules]
        assert "wow64.dll" in modules_names
        # Parsing
        wow64 = [m for m in peb64.modules if m.name == "wow64.dll"][0]
        assert "Wow64LdrpInitialize" in wow64.pe.exports


    def test_getset_syswow_context(self, proc32):
        addr = proc32.virtual_alloc(0x1000)
        remote_python_code = """
        import windows
        import windows.native_exec.simple_x64 as x64
        windows.utils.create_console()
        x64_code = x64.assemble("mov r11, 0x1122334455667788; mov rax, 0x8877665544332211; mov [{0}], rax ;label :loop; jmp :loop; nop; nop; ret")
        res = windows.syswow64.execute_64bits_code_from_syswow(x64_code)
        print("res = {{0}}".format(hex(res)))
        windows.current_process.write_qword({0},  res)
        """.format(addr)

        t = proc32.execute_python_unsafe(textwrap.dedent(remote_python_code))
        # Wait for python execution
        while proc32.read_qword(addr) != 0x8877665544332211:
            pass
        ctx = t.context_syswow
        # Check the get context
        assert ctx.R11 == 0x1122334455667788
        assert proc32.read_memory(ctx.Rip, 2) == x64.assemble("label :loop; jmp :loop")
        t.suspend()
        proc32.write_memory(ctx.Rip, "\x90\x90")
        # Check the set context
        RETURN_VALUE = 0x4041424344454647
        ctx.Rax = RETURN_VALUE
        ctx.Rip += 2
        t.set_syswow_context(ctx)
        t.resume()
        t.wait()
        assert RETURN_VALUE == proc32.read_qword(addr)