[reactos] 01/01: [SHELL32] Fix for shlexec.cpp regressions (#5282)

[Doug Lyons]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1b3eed58cac4cd7f8ebfe…
commit 1b3eed58cac4cd7f8ebfeecbe1f244076c83a8b8
Author:     Doug Lyons <douglyons(a)douglyons.com>
AuthorDate: Sun Sep 24 15:35:28 2023 -0500
Commit:     GitHub <noreply(a)github.com>
CommitDate: Sun Sep 24 20:35:28 2023 +0000
    [SHELL32] Fix for shlexec.cpp regressions (#5282)
    fixes CORE-18967 'Taskbar toolbar - Right click > Open folder fails'
    by restoring the code-path we removed with the guilty
    0.4.15-dev-3847-g /9b716539182864bc077e362febcda74da50287ed
    and add test_sei_lpIDList to shell32:ShellExecuteEx apitest test to protect
    that functionality on future attempts to simplify.
---
 dll/win32/shell32/shlexec.cpp                      | 33 ++++++++++++++++
 .../rostests/apitests/shell32/ShellExecuteEx.cpp   | 45 ++++++++++++++++++++++
 2 files changed, 78 insertions(+)
diff --git a/dll/win32/shell32/shlexec.cpp b/dll/win32/shell32/shlexec.cpp
index 292c8db8292..ce8113aefa9 100644
--- a/dll/win32/shell32/shlexec.cpp
+++ b/dll/win32/shell32/shlexec.cpp
@@ -2124,6 +2124,39 @@ static BOOL SHELL_execute(LPSHELLEXECUTEINFOW sei, SHELL_ExecuteW32
execfunc)
             *end = L'\0';
             lpFile = wfileName;
         }
+        /* We have to test sei instead of sei_tmp because sei_tmp had its
+         * input fMask modified above in SHELL_translate_idlist.
+         * This code is needed to handle the case where we only have an
+         * lpIDList with multiple CLSID/PIDL's (not 'My Computer' only) */
+        else if ((sei->fMask & SEE_MASK_IDLIST) == SEE_MASK_IDLIST)
+        {
+            WCHAR buffer[MAX_PATH], xlpFile[MAX_PATH];
+            LPWSTR space, s;
+
+            LPWSTR beg = wszApplicationName;
+            for(s = beg; (space = const_cast<LPWSTR>(strchrW(s, L' '))); s
= space + 1)
+            {
+                int idx = space - sei_tmp.lpFile;
+                memcpy(buffer, sei_tmp.lpFile, idx * sizeof(WCHAR));
+                buffer[idx] = '\0';
+
+                if (SearchPathW(*sei_tmp.lpDirectory ? sei_tmp.lpDirectory : NULL,
+                    buffer, L".exe", _countof(xlpFile), xlpFile, NULL))
+                {
+                    /* separate out command from parameter string */
+                    LPCWSTR p = space + 1;
+
+                    while(isspaceW(*p))
+                        ++p;
+
+                    strcpyW(wszParameters, p);
+                    *space = L'\0';
+
+                    break;
+                }
+            }
+            lpFile = sei_tmp.lpFile;
+        }
         else
         {
             lpFile = sei_tmp.lpFile;
diff --git a/modules/rostests/apitests/shell32/ShellExecuteEx.cpp
b/modules/rostests/apitests/shell32/ShellExecuteEx.cpp
index d239467d859..29f03be94b8 100644
--- a/modules/rostests/apitests/shell32/ShellExecuteEx.cpp
+++ b/modules/rostests/apitests/shell32/ShellExecuteEx.cpp
@@ -467,6 +467,48 @@ static void test_properties()
     ok_ptr(info.hInstApp, (HINSTANCE)2);
 }
+static void test_sei_lpIDList()
+{
+    /* This tests ShellExecuteEx with lpIDList for explorer C:\ */
+
+    /* ITEMIDLIST for CLSID of 'My Computer' followed by PIDL for 'C:\'
*/
+    BYTE lpitemidlist[30] = { 0x14, 0, 0x1f, 0, 0xe0, 0x4f, 0xd0, 0x20, 0xea,
+    0x3a, 0x69, 0x10, 0xa2, 0xd8, 0x08, 0, 0x2b, 0x30, 0x30, 0x9d, // My Computer
+    0x8, 0, 0x23, 0x43, 0x3a, 0x5c, 0x5c, 0, 0, 0,}; // C:\\ + NUL-NUL ending
+    BYTE *lpBytes;
+    lpBytes = lpitemidlist;
+
+    SHELLEXECUTEINFOW ShellExecInfo;
+    BOOL Result;
+    STARTUPINFOW si;
+    PROCESS_INFORMATION pi;
+    HWND hWnd;
+
+    ZeroMemory( &si, sizeof(si) );
+    si.cb = sizeof(si);
+    ZeroMemory( &pi, sizeof(pi) );
+
+    ZeroMemory(&ShellExecInfo, sizeof(ShellExecInfo));
+    ShellExecInfo.cbSize = sizeof(ShellExecInfo);
+    ShellExecInfo.fMask = SEE_MASK_IDLIST;
+    ShellExecInfo.hwnd = NULL;
+    ShellExecInfo.nShow = SW_SHOWNORMAL;
+    ShellExecInfo.lpFile = NULL;
+    ShellExecInfo.lpDirectory = NULL;
+    ShellExecInfo.lpIDList = lpBytes;
+
+    Result = ShellExecuteExW(&ShellExecInfo);
+    ok(Result == TRUE, "ShellExecuteEx lpIDList 'C:\\' failed\n");
+    trace("sei_lpIDList returned: %s\n", Result ? "SUCCESS" :
"FAILURE");
+    if (Result)
+    {
+        Sleep(700);
+        // Terminate Window
+        hWnd = FindWindowW(L"CabinetWClass", L"Local Disk (C:)");
+        PostMessage(hWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
+    }
+}
+
 START_TEST(ShellExecuteEx)
 {
     DoAppPathTest();
@@ -475,4 +517,7 @@ START_TEST(ShellExecuteEx)
     DoWaitForWindow(CLASSNAME, CLASSNAME, TRUE, TRUE);
     Sleep(100);
+
+    test_sei_lpIDList();
+
 }