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libobs/util: Add get_dll_ver function (windows)

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Used to get the version of a dynamic link library on windows.
This commit is contained in:
jp9000 2015-10-03 22:02:47 -07:00
parent 48550b9691
commit 8a0a28bf27
2 changed files with 38 additions and 21 deletions
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58
libobs/util/platform-windows.c
View file

@ -585,25 +585,24 @@ typedef BOOL (WINAPI *ver_query_value_w_t)(
LPVOID *buf,
PUINT sizeout);
static void actually_get_win_ver(struct win_version_info *ver_info)
static get_file_version_info_size_w_t get_file_version_info_size = NULL;
static get_file_version_info_w_t get_file_version_info = NULL;
static ver_query_value_w_t ver_query_value = NULL;
static bool ver_initialized = false;
static bool ver_initialize_success = false;
static bool initialize_version_functions(void)
{
HMODULE ver = GetModuleHandleW(L"version");
VS_FIXEDFILEINFO *info = NULL;
UINT len = 0;
BOOL success;
LPVOID data;
DWORD size;
get_file_version_info_size_w_t get_file_version_info_size;
get_file_version_info_w_t get_file_version_info;
ver_query_value_w_t ver_query_value;
ver_initialized = true;
if (!ver) {
ver = LoadLibraryW(L"version");
if (!ver) {
blog(LOG_ERROR, "Failed to load windows version "
"library");
return;
blog(LOG_ERROR, "Failed to load windows "
"version library");
return false;
}
}
@ -617,29 +616,46 @@ static void actually_get_win_ver(struct win_version_info *ver_info)
if (!get_file_version_info_size ||
!get_file_version_info ||
!ver_query_value) {
blog(LOG_ERROR, "Failed to load windows version "
"functions");
return;
blog(LOG_ERROR, "Failed to load windows version "
"functions");
return false;
}
size = get_file_version_info_size(L"kernel32", NULL);
ver_initialize_success = true;
return true;
}
bool get_dll_ver(const wchar_t *lib, struct win_version_info *ver_info)
{
VS_FIXEDFILEINFO *info = NULL;
UINT len = 0;
BOOL success;
LPVOID data;
DWORD size;
if (!ver_initialized && !initialize_version_functions())
return false;
if (!ver_initialize_success)
return false;
size = get_file_version_info_size(lib, NULL);
if (!size) {
blog(LOG_ERROR, "Failed to get windows version info size");
return;
return false;
}
data = bmalloc(size);
if (!get_file_version_info(L"kernel32", 0, size, data)) {
blog(LOG_ERROR, "Failed to get windows version info");
bfree(data);
return;
return false;
}
success = ver_query_value(data, L"\\", (LPVOID*)&info, &len);
if (!success || !info || !len) {
blog(LOG_ERROR, "Failed to get windows version info value");
bfree(data);
return;
return false;
}
ver_info->major = (int)HIWORD(info->dwFileVersionMS);
@ -648,7 +664,7 @@ static void actually_get_win_ver(struct win_version_info *ver_info)
ver_info->revis = (int)LOWORD(info->dwFileVersionLS);
bfree(data);
return;
return true;
}
void get_win_ver(struct win_version_info *info)
@ -660,7 +676,7 @@ void get_win_ver(struct win_version_info *info)
return;
if (!got_version) {
actually_get_win_ver(&ver);
get_dll_ver(L"kernel32", &ver);
got_version = true;
}

1
libobs/util/windows/win-version.h
View file

@ -29,6 +29,7 @@ struct win_version_info {
int revis;
};
EXPORT bool get_dll_ver(const wchar_t *lib, struct win_version_info *info);
EXPORT void get_win_ver(struct win_version_info *info);
#ifdef __cplusplus