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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "DefaultPDF.h"
#include <string>
#include <shlobj.h>
#include <winerror.h>
#include "EventLog.h"
#include "UtfConvert.h"
#include "mozilla/Buffer.h"
#include "mozilla/RefPtr.h"
#include "mozilla/WinHeaderOnlyUtils.h"
using PdfResult = mozilla::WindowsErrorResult<std::string>;
static PdfResult GetDefaultPdf() {
RefPtr<IApplicationAssociationRegistration> pAAR;
HRESULT hr = CoCreateInstance(
CLSID_ApplicationAssociationRegistration, nullptr, CLSCTX_INPROC,
IID_IApplicationAssociationRegistration, getter_AddRefs(pAAR));
if (FAILED(hr)) {
LOG_ERROR(hr);
return PdfResult(mozilla::WindowsError::FromHResult(hr));
}
mozilla::UniquePtr<wchar_t, mozilla::CoTaskMemFreeDeleter> registeredApp;
{
wchar_t* rawRegisteredApp;
hr = pAAR->QueryCurrentDefault(L".pdf", AT_FILEEXTENSION, AL_EFFECTIVE,
&rawRegisteredApp);
if (FAILED(hr)) {
LOG_ERROR(hr);
return PdfResult(mozilla::WindowsError::FromHResult(hr));
}
registeredApp = mozilla::UniquePtr<wchar_t, mozilla::CoTaskMemFreeDeleter>{
rawRegisteredApp};
}
// Get the application Friendly Name associated to the found ProgID. This is
// sized to be larger than any observed or expected friendly names. Long
// friendly names tend to be in the form `[Company] [Viewer] [Variant]`
DWORD friendlyNameLen = 0;
hr = AssocQueryStringW(ASSOCF_NONE, ASSOCSTR_FRIENDLYAPPNAME,
registeredApp.get(), nullptr, nullptr,
&friendlyNameLen);
if (FAILED(hr)) {
LOG_ERROR(hr);
return PdfResult(mozilla::WindowsError::FromHResult(hr));
}
mozilla::Buffer<wchar_t> friendlyNameBuffer(friendlyNameLen);
hr = AssocQueryStringW(ASSOCF_NONE, ASSOCSTR_FRIENDLYAPPNAME,
registeredApp.get(), nullptr,
friendlyNameBuffer.Elements(), &friendlyNameLen);
if (FAILED(hr)) {
LOG_ERROR(hr);
return PdfResult(mozilla::WindowsError::FromHResult(hr));
}
return Utf16ToUtf8(friendlyNameBuffer.Elements());
}
DefaultPdfResult GetDefaultPdfInfo() {
DefaultPdfInfo pdfInfo;
MOZ_TRY_VAR(pdfInfo.currentDefaultPdf, GetDefaultPdf());
return pdfInfo;
}
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