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msi: Create the custom action server as an elevated process.

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Dragon Naturally Speaking 12.5 manually validates that the custom action server
is elevated.

One might imagine that the right approach here is to add a manifest to msiexec;
however, msiexec does not always trigger a UAC prompt on Windows.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51143
This commit is contained in:
Zebediah Figura 2021-05-16 20:49:05 -05:00 committed by Alexandre Julliard
parent b381f9d095
commit 366398cc53
1 changed files with 22 additions and 2 deletions
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24
dlls/msi/custom.c
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@ -573,12 +573,28 @@ UINT CDECL __wine_msi_call_dll_function(DWORD client_pid, const GUID *guid)
return r;
}
static HANDLE get_admin_token(void)
{
TOKEN_ELEVATION_TYPE type;
TOKEN_LINKED_TOKEN linked;
DWORD size;
if (!GetTokenInformation(GetCurrentThreadEffectiveToken(), TokenElevationType, &type, sizeof(type), &size)
|| type == TokenElevationTypeFull)
return NULL;
if (!GetTokenInformation(GetCurrentThreadEffectiveToken(), TokenLinkedToken, &linked, sizeof(linked), &size))
return NULL;
return linked.LinkedToken;
}
static DWORD custom_start_server(MSIPACKAGE *package, DWORD arch)
{
WCHAR path[MAX_PATH], cmdline[MAX_PATH + 23];
PROCESS_INFORMATION pi = {0};
STARTUPINFOW si = {0};
WCHAR buffer[24];
HANDLE token;
void *cookie;
HANDLE pipe;
@ -600,14 +616,18 @@ static DWORD custom_start_server(MSIPACKAGE *package, DWORD arch)
lstrcatW(path, L"\\msiexec.exe");
swprintf(cmdline, ARRAY_SIZE(cmdline), L"%s -Embedding %d", path, GetCurrentProcessId());
token = get_admin_token();
if (is_wow64 && arch == SCS_64BIT_BINARY)
{
Wow64DisableWow64FsRedirection(&cookie);
CreateProcessW(path, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
CreateProcessAsUserW(token, path, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
Wow64RevertWow64FsRedirection(cookie);
}
else
CreateProcessW(path, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
CreateProcessAsUserW(token, path, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
if (token) CloseHandle(token);
CloseHandle(pi.hThread);