win: Retrieve module version/type information

util/win/module_version.cc

+// Copyright 2015 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/win/module_version.h"
+
+#include <windows.h>
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/utf_string_conversions.h"
+
+namespace crashpad {
+

[cpu_(ooo_6.6-7.5), 2015/05/13 01:34:12]

fyi you can have modules without fixedfileinfo, I guess they should not be using
crashpad.

[scottmg, 2015/05/13 02:12:41]

That fails at GetFileVersionInfo() and then will end up storing a version of
"0.0.0.0" later. It does log spam for those modules, but maybe that's ok.

+bool GetModuleVersionAndType(const base::FilePath& path,
+                             VS_FIXEDFILEINFO* vs_fixedfileinfo) {
+  DWORD size = GetFileVersionInfoSize(path.value().c_str(), nullptr);
+  if (!size) {
+    PLOG(WARNING) << "GetFileVersionInfoSize: "
+                  << base::UTF16ToUTF8(path.value());
+  } else {
+    scoped_ptr<uint8_t[]> data(new uint8_t[size]);
+    if (!GetFileVersionInfo(path.value().c_str(), 0, size, data.get())) {
+      PLOG(WARNING) << "GetFileVersionInfo: "

[cpu_(ooo_6.6-7.5), 2015/05/13 01:34:12]

fwiw, this is slooow. Specially for a big binary.

[scottmg, 2015/05/13 02:12:41]

I was wondering about that. I was vaguely hoping it wouldn't be too bad since
it'll be in memory, but I didn't check. Do you think we should cache? Or maybe
find the resource ourselves? Or just leave it?

+                    << base::UTF16ToUTF8(path.value());
+    } else {
+      VS_FIXEDFILEINFO* fixed_file_info;
+      UINT size;
+      if (!VerQueryValue(data.get(),
+                         L"\\",
+                         reinterpret_cast<void**>(&fixed_file_info),
+                         &size)) {
+        PLOG(WARNING) << "VerQueryValue";
+      } else {
+        *vs_fixedfileinfo = *fixed_file_info;
+        vs_fixedfileinfo->dwFileFlags &= vs_fixedfileinfo->dwFileFlagsMask;
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+}  // namespace crashpad