1 files changed, 77 insertions, 0 deletions
diff --git a/src/common/windows/version.c b/src/common/windows/version.c
new file mode 100644
index 0000000..4d61c78
--- /dev/null
+++ b/src/common/windows/version.c
@@ -0,0 +1,77 @@
+#include "common/debug.h"
+#include "common/mallocHelper.h"
+#include "common/windows/version.h"
+#include "common/windows/unicode.h"
+
+#include <windows.h>
+
+bool ffGetFileVersion(const wchar_t* filePath, const wchar_t* stringName, FFstrbuf* version) {
+    FF_DEBUG("ffGetFileVersion: enter filePath=%ls stringName=%ls", filePath, stringName);
+
+    DWORD handle;
+    DWORD size = GetFileVersionInfoSizeW(filePath, &handle);
+    if (size == 0) {
+        FF_DEBUG("GetFileVersionInfoSizeW failed: %s", ffDebugWin32Error(GetLastError()));
+        return false;
+    }
+
+    FF_DEBUG("GetFileVersionInfoSizeW ok: size=%lu handle=%lu",
+        (unsigned long) size,
+        (unsigned long) handle);
+
+    FF_AUTO_FREE void* versionData = malloc(size);
+    if (!versionData) {
+        FF_DEBUG("malloc failed: size=%lu", (unsigned long) size);
+        return false;
+    }
+
+    if (!GetFileVersionInfoW(filePath, handle, size, versionData)) {
+        FF_DEBUG("GetFileVersionInfoW failed: %s", ffDebugWin32Error(GetLastError()));
+        return false;
+    }
+
+    FF_DEBUG("GetFileVersionInfoW ok");
+
+    if (!stringName) {
+        VS_FIXEDFILEINFO* verInfo;
+        UINT len;
+        if (VerQueryValueW(versionData, L"\\", (void**) &verInfo, &len) &&
+            len &&
+            verInfo->dwSignature == 0xFEEF04BD) {
+            ffStrbufSetF(version, "%u.%u.%u.%u", (unsigned) ((verInfo->dwProductVersionMS >> 16) & 0xffff), (unsigned) ((verInfo->dwProductVersionMS >> 0) & 0xffff), (unsigned) ((verInfo->dwProductVersionLS >> 16) & 0xffff), (unsigned) ((verInfo->dwProductVersionLS >> 0) & 0xffff));
+            FF_DEBUG("fixed version resolved: %s", version->chars);
+            return true;
+        }
+
+        FF_DEBUG("fixed version query failed or invalid signature");
+        return false;
+    }
+
+    struct {
+        WORD language;
+        WORD codePage;
+    }* translations;
+    UINT translationsLen;
+
+    if (VerQueryValueW(versionData, L"\\VarFileInfo\\Translation", (void**) &translations, &translationsLen) &&
+        translationsLen >= sizeof(*translations)) {
+        wchar_t subBlock[128];
+        snwprintf(subBlock, ARRAY_SIZE(subBlock), L"\\StringFileInfo\\%04x%04x\\%ls", translations[0].language, translations[0].codePage, stringName);
+        FF_DEBUG("query version string with translation: %ls", subBlock);
+
+        wchar_t* value;
+        UINT valueLen; // Number of characters, including null terminator
+        if (VerQueryValueW(versionData, subBlock, (void**) &value, &valueLen) && valueLen > 0) {
+            ffStrbufSetNWS(version, valueLen - 1, value);
+            FF_DEBUG("version string resolved (translation fallback): %s", version->chars);
+            return true;
+        }
+
+        FF_DEBUG("translation fallback query failed");
+    } else {
+        FF_DEBUG("no translation table found in version resource");
+    }
+
+    FF_DEBUG("ffGetFileVersion failed");
+    return false;
+}