void ReleaseActContext(void)
{
void (WINAPI *ReleaseActCtx)(HANDLE);
BOOL (WINAPI *DeactivateActCtx)(DWORD dwFlags, ULONG_PTR ulCookie);
HANDLE k32;
if (!IsXPOrLater())
return;
k32 = LoadLibrary("kernel32");
ReleaseActCtx = (void*)GetProcAddress(k32, "ReleaseActCtx");
DeactivateActCtx = (void*)GetProcAddress(k32, "DeactivateActCtx");
if (!ReleaseActCtx || !DeactivateActCtx)
{
VS("Cannot find ReleaseActCtx/DeactivateActCtx exports in kernel32.dll\n");
return;
}
__try
{
VS("Deactivating activation context\n");
if (!DeactivateActCtx(0, actToken))
VS("Error deactivating context!\n!");
VS("Releasing activation context\n");
if (hCtx != INVALID_HANDLE_VALUE)
ReleaseActCtx(hCtx);
VS("Done\n");
}
__except (STATUS_SXS_EARLY_DEACTIVATION)
{
VS("XS early deactivation; somebody left the activation context dirty, let's ignore the problem\n");
}
}
int CreateActContext(char *workpath, char *thisfile)
{
char manifestpath[PATH_MAX];
char basename[PATH_MAX];
ACTCTX ctx;
BOOL activated;
HANDLE k32;
HANDLE (WINAPI *CreateActCtx)(PACTCTX pActCtx);
BOOL (WINAPI *ActivateActCtx)(HANDLE hActCtx, ULONG_PTR *lpCookie);
// If not XP, nothing to do -- return OK
if (!IsXPOrLater())
return 1;
/* Setup activation context */
pyi_path_basename(basename, thisfile);
pyi_path_join(manifestpath, workpath, basename);
strcat(manifestpath, ".manifest");
VS("LOADER: manifestpath: %s\n", manifestpath);
k32 = LoadLibrary("kernel32");
CreateActCtx = (void*)GetProcAddress(k32, "CreateActCtxA");
ActivateActCtx = (void*)GetProcAddress(k32, "ActivateActCtx");
if (!CreateActCtx || !ActivateActCtx)
{
VS("LOADER: Cannot find CreateActCtx/ActivateActCtx exports in kernel32.dll\n");
return 0;
}
ZeroMemory(&ctx, sizeof(ctx));
ctx.cbSize = sizeof(ACTCTX);
ctx.lpSource = manifestpath;
hCtx = CreateActCtx(&ctx);
if (hCtx != INVALID_HANDLE_VALUE)
{
VS("LOADER: Activation context created\n");
activated = ActivateActCtx(hCtx, &actToken);
if (activated)
{
VS("LOADER: Activation context activated\n");
return 1;
}
}
hCtx = INVALID_HANDLE_VALUE;
VS("LOADER: Error activating the context\n");
return 0;
}
