[PATCH v3 0/1] MR7023: kernelbase: Workaround for SetCurrentDirectoryW misuse in Vanguard: Saga of Heroes

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Lois Gomez (＠loisgomez)

16 Dec 2024 16 Dec '24

7:03 a.m.

**Context:**

Vanguard Saga of Heroes is an MMORPG that was closed years ago by SOE. However the game is still alive in the emulator scene at https://vgoemulator.net/

The game seems to have relied on an old behaviour of the function SetCurrentDirectoryW( LPCWSTR dir ) which currently crashes the game.

This patch was a solution discovered by the community at https://vgoemulator.net/phpBB3/viewtopic.php?t=5563

It was previously reported to wine bugzilla in this bug report. https://bugs.winehq.org/show_bug.cgi?id=34285

**Summary of changes:**

Updates the function SetCurrentDirectoryW( LPCWSTR dir ) to remove any trailing "." Previously the game will set the current directory as "bin\." and subsequently crash when accessing "bin\.Caches". It will now access "bin\Caches" and run successfully

**Notes:**

This is my first contribution to the project so I might be making a lot of incorrect assumptions on how this might affect other binaries. Please do let me know if there is a better way to implement a change like this in the codebase.

Thanks for your help

-- v3: kernelbase: Workaound for SetCurrentDirectoryW misuse

https://gitlab.winehq.org/wine/wine/-/merge_requests/7023

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Lois Gomez

16 Dec 16 Dec

7:04 a.m.

New subject: [PATCH v3 1/1] kernelbase: Workaound for SetCurrentDirectoryW misuse

From: Lois Gomez csberto@gmail.com

--- dlls/ntdll/path.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/dlls/ntdll/path.c b/dlls/ntdll/path.c index 8956ff07f6c..252cc045c80 100644 --- a/dlls/ntdll/path.c +++ b/dlls/ntdll/path.c @@ -966,6 +966,13 @@ NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir) ptr = newdir.Buffer; ptr += 4; /* skip ??\ prefix */ size -= 4; + + /* remove trailing '.' if present */ + if (size && ptr[size - 1] == '.' && (size == 1 || ptr[size - 2] == '\')) + { + size--; /* Remove the dot */ + } + if (size && ptr[size - 1] != '\') ptr[size++] = '\';

/* convert ??\UNC\ path to \ prefix */

-- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/7023

Marvin

7:35 a.m.

New subject: [PATCH v3 1/1] kernelbase: Workaound for SetCurrentDirectoryW misuse

Hi,

It looks like your patch introduced the new failures shown below. Please investigate and fix them before resubmitting your patch. If they are not new, fixing them anyway would help a lot. Otherwise please ask for the known failures list to be updated.

The tests also ran into some preexisting test failures. If you know how to fix them that would be helpful. See the TestBot job for the details:

The full results can be found at: https://testbot.winehq.org/JobDetails.pl?Key=150398

Your paranoid android.

=== debian11b (64 bit WoW report) ===

user32: input.c:733: Test failed: peek: raw_legacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey F, message WM_KEYDOWN, extra 0 input.c:733: Test failed: peek: raw_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0x46, lparam 0x10001 input.c:733: Test failed: peek: raw_legacy: 0: test->expect 2 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_CHAR, wparam 0x66, lparam 0x10001 input.c:734: Test failed: peek: raw_legacy: 0: got F: 0 input.c:733: Test failed: peek: raw_legacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey F, message WM_KEYUP, extra 0 input.c:733: Test failed: peek: raw_legacy: 1: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0x46, lparam 0xffffffffc0020001 input.c:733: Test failed: peek: raw_vk_packet_legacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey 0xe7, message WM_KEYDOWN, extra 0 input.c:733: Test failed: peek: raw_vk_packet_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0xe7, lparam 0x10001 input.c:734: Test failed: peek: raw_vk_packet_legacy: 0: got 0xe7: 0 input.c:733: Test failed: peek: raw_vk_packet_legacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey 0xe7, message WM_KEYUP, extra 0 input.c:733: Test failed: peek: raw_vk_packet_legacy: 1: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0xe7, lparam 0xffffffffc0020001 input.c:733: Test failed: peek: raw_unicode_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_CHAR, wparam 0x3c0, lparam 0x1 input.c:734: Test failed: peek: raw_unicode_legacy: 0: got 0xe7: 0 input.c:733: Test failed: peek: raw_unicode_vkey_ctrl_legacy: 0: test->expect 0 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0x11, lparam 0xc00001 input.c:734: Test failed: peek: raw_unicode_vkey_ctrl_legacy: 0: got VK_CONTROL: 0 input.c:734: Test failed: peek: raw_unicode_vkey_ctrl_legacy: 0: got VK_LCONTROL: 0 input.c:733: Test failed: peek: raw_unicode_vkey_ctrl_legacy: 1: test->expect 0 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0x11, lparam 0xffffffffc0c00001 input.c:733: Test failed: peek: raw_nolegacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey F, message WM_KEYDOWN, extra 0 input.c:733: Test failed: peek: raw_nolegacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey F, message WM_KEYUP, extra 0 input.c:733: Test failed: peek: raw_vk_packet_nolegacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey 0xe7, message WM_KEYDOWN, extra 0 input.c:733: Test failed: peek: raw_vk_packet_nolegacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey 0xe7, message WM_KEYUP, extra 0 input.c:733: Test failed: receive: raw_legacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey F, message WM_KEYDOWN, extra 0 input.c:733: Test failed: receive: raw_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0x46, lparam 0x10001 input.c:733: Test failed: receive: raw_legacy: 0: test->expect 2 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_CHAR, wparam 0x66, lparam 0x10001 input.c:734: Test failed: receive: raw_legacy: 0: got F: 0 input.c:733: Test failed: receive: raw_legacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey F, message WM_KEYUP, extra 0 input.c:733: Test failed: receive: raw_legacy: 1: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0x46, lparam 0xffffffffc0020001 input.c:733: Test failed: receive: raw_vk_packet_legacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey 0xe7, message WM_KEYDOWN, extra 0 input.c:733: Test failed: receive: raw_vk_packet_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0xe7, lparam 0x10001 input.c:734: Test failed: receive: raw_vk_packet_legacy: 0: got 0xe7: 0 input.c:733: Test failed: receive: raw_vk_packet_legacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey 0xe7, message WM_KEYUP, extra 0 input.c:733: Test failed: receive: raw_vk_packet_legacy: 1: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0xe7, lparam 0xffffffffc0020001 input.c:733: Test failed: receive: raw_unicode_legacy: 0: test->expect 1 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_CHAR, wparam 0x3c0, lparam 0x1 input.c:734: Test failed: receive: raw_unicode_legacy: 0: got 0xe7: 0 input.c:733: Test failed: receive: raw_unicode_vkey_ctrl_legacy: 0: test->expect 0 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYDOWN, wparam 0x11, lparam 0xc00001 input.c:734: Test failed: receive: raw_unicode_vkey_ctrl_legacy: 0: got VK_CONTROL: 0 input.c:734: Test failed: receive: raw_unicode_vkey_ctrl_legacy: 0: got VK_LCONTROL: 0 input.c:733: Test failed: receive: raw_unicode_vkey_ctrl_legacy: 1: test->expect 0 (missing): MSG_TEST_WIN hwnd 0000000000000000, WM_KEYUP, wparam 0x11, lparam 0xffffffffc0c00001 input.c:733: Test failed: receive: raw_nolegacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey F, message WM_KEYDOWN, extra 0 input.c:733: Test failed: receive: raw_nolegacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey F, message WM_KEYUP, extra 0 input.c:733: Test failed: receive: raw_vk_packet_nolegacy: 0: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x1, flags 0, vkey 0xe7, message WM_KEYDOWN, extra 0 input.c:733: Test failed: receive: raw_vk_packet_nolegacy: 1: test->expect 0 (missing): got WM_INPUT key hwnd 0000000000000000, code 0, make_code 0x2, flags 0x1, vkey 0xe7, message WM_KEYUP, extra 0

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Lois Gomez
Lois Gomez (＠loisgomez)
Marvin