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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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 "SecurityEnvironment.hxx"
#include "CertificateImpl.hxx"
#include <com/sun/star/security/CertificateCharacters.hpp>
#include <com/sun/star/security/CertificateValidity.hpp>
#include <comphelper/servicehelper.hxx>
#include <vector>
#include <rtl/ref.hxx>
#ifdef _WIN32
#include <config_folders.h>
#include <osl/file.hxx>
#include <osl/process.h>
#include <rtl/bootstrap.hxx>
#include <tools/urlobj.hxx>
#endif
#include <key.h>
#include <keylistresult.h>
#include <xmlsec-wrapper.h>
#if defined _MSC_VER && defined __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wundef"
#endif
#include <gpgme.h>
#if defined _MSC_VER && defined __clang__
#pragma clang diagnostic pop
#endif
#include <context.h>
using namespace css;
using namespace css::security;
using namespace css::uno;
using namespace css::lang;
SecurityEnvironmentGpg::SecurityEnvironmentGpg()
{
#ifdef _WIN32
// On Windows, gpgme expects gpgme-w32spawn.exe to be in the same directory as the current
// process executable. This assumption might be wrong, e.g., for bundled python, which is
// in instdir/program/python-core-x.y.z/bin, while gpgme-w32spawn.exe is in instdir/program.
// If we can't find gpgme-w32spawn.exe in the current executable location, then try to find
// the spawn executable, and inform gpgme about actual location using gpgme_set_global_flag.
[[maybe_unused]] static bool bSpawnPathInitialized = [] {
auto accessUrl = [](const INetURLObject& url) {
osl::File file(url.GetMainURL(INetURLObject::DecodeMechanism::NONE));
return file.open(osl_File_OpenFlag_Read) == osl::FileBase::E_None;
};
OUString sPath;
osl_getExecutableFile(&sPath.pData);
INetURLObject aPathUrl(sPath);
aPathUrl.setName(u"gpgme-w32spawn.exe");
if (!accessUrl(aPathUrl))
{
sPath = "$BRAND_BASE_DIR/" LIBO_LIBEXEC_FOLDER "/gpgme-w32spawn.exe";
rtl::Bootstrap::expandMacros(sPath);
aPathUrl.SetURL(sPath);
if (accessUrl(aPathUrl))
{
aPathUrl.removeSegment();
GpgME::setGlobalFlag("w32-inst-dir",
aPathUrl.getFSysPath(FSysStyle::Dos).toUtf8().getStr());
}
}
return true;
}();
#endif
GpgME::Error err = GpgME::checkEngine(GpgME::OpenPGP);
if (err)
throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
m_ctx.reset( GpgME::Context::createForProtocol(GpgME::OpenPGP) );
if (m_ctx == nullptr)
throw RuntimeException("The GpgME library failed to initialize for the OpenPGP protocol.");
m_ctx->setArmor(false);
}
SecurityEnvironmentGpg::~SecurityEnvironmentGpg()
{
}
OUString SecurityEnvironmentGpg::getSecurityEnvironmentInformation()
{
return OUString();
}
Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::getCertificatesImpl( bool bPrivateOnly )
{
std::vector< GpgME::Key > keyList;
std::vector< rtl::Reference<CertificateImpl> > certsList;
m_ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
GpgME::Error err = m_ctx->startKeyListing("", bPrivateOnly );
while (!err) {
GpgME::Key k = m_ctx->nextKey(err);
if (err)
break;
if (!k.isRevoked() && !k.isExpired() && !k.isDisabled() && !k.isInvalid()) {
// We can't create CertificateImpl here as CertificateImpl::setCertificate uses GpgME API
// which interrupts our key listing here. So first get the keys from GpgME, then create the CertificateImpls
keyList.push_back(k);
}
}
m_ctx->endKeyListing();
for (auto const& key : keyList) {
rtl::Reference<CertificateImpl> xCert = new CertificateImpl();
xCert->setCertificate(m_ctx.get(),key);
certsList.push_back(xCert);
}
Sequence< Reference< XCertificate > > xCertificateSequence(certsList.size());
auto xCertificateSequenceRange = asNonConstRange(xCertificateSequence);
int i = 0;
for (const auto& cert : certsList) {
xCertificateSequenceRange[i++] = cert;
}
return xCertificateSequence;
}
Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::getPersonalCertificates()
{
return getCertificatesImpl( true );
}
Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::getAllCertificates()
{
return getCertificatesImpl( false );
}
Reference< XCertificate > SecurityEnvironmentGpg::getCertificate( const OUString& keyId, const Sequence< sal_Int8 >& /*serialNumber*/ )
{
//xmlChar* pSignatureValue=xmlNodeGetContent(cur);
OString ostr = OUStringToOString( keyId , RTL_TEXTENCODING_UTF8 );
const xmlChar* strKeyId = reinterpret_cast<const xmlChar*>(ostr.getStr());
xmlSecSize nWritten;
int nRet = xmlSecBase64Decode_ex(strKeyId, const_cast<xmlSecByte*>(strKeyId), xmlStrlen(strKeyId), &nWritten);
if(nRet < 0)
throw RuntimeException("Base64 decode failed");
m_ctx->setKeyListMode(GPGME_KEYLIST_MODE_LOCAL);
GpgME::Error err = m_ctx->startKeyListing("", false);
while (!err) {
GpgME::Key k = m_ctx->nextKey(err);
if (err)
break;
if (!k.isInvalid() && strcmp(k.primaryFingerprint(), reinterpret_cast<const char*>(strKeyId)) == 0) {
rtl::Reference<CertificateImpl> xCert = new CertificateImpl();
xCert->setCertificate(m_ctx.get(), k);
m_ctx->endKeyListing();
return xCert;
}
}
m_ctx->endKeyListing();
return nullptr;
}
Sequence< Reference < XCertificate > > SecurityEnvironmentGpg::buildCertificatePath( const Reference< XCertificate >& /*begin*/ )
{
return Sequence< Reference < XCertificate > >();
}
Reference< XCertificate > SecurityEnvironmentGpg::createCertificateFromRaw( const Sequence< sal_Int8 >& /*rawCertificate*/ )
{
return nullptr;
}
Reference< XCertificate > SecurityEnvironmentGpg::createCertificateFromAscii( const OUString& /*asciiCertificate*/ )
{
return nullptr;
}
sal_Int32 SecurityEnvironmentGpg::verifyCertificate( const Reference< XCertificate >& aCert,
const Sequence< Reference< XCertificate > >& /*intermediateCerts*/ )
{
const CertificateImpl* xCert = dynamic_cast<CertificateImpl*>(aCert.get());
if (xCert == nullptr) {
// Can't find the key locally -> unknown owner
return security::CertificateValidity::ISSUER_UNKNOWN;
}
const GpgME::Key* key = xCert->getCertificate();
if (key->ownerTrust() == GpgME::Key::OwnerTrust::Marginal ||
key->ownerTrust() == GpgME::Key::OwnerTrust::Full ||
key->ownerTrust() == GpgME::Key::OwnerTrust::Ultimate)
{
return security::CertificateValidity::VALID;
}
return security::CertificateValidity::ISSUER_UNTRUSTED;
}
sal_Int32 SecurityEnvironmentGpg::getCertificateCharacters(
const Reference< XCertificate >& aCert)
{
if (dynamic_cast<CertificateImpl*>(aCert.get()) == nullptr)
throw RuntimeException();
// we only listed private keys anyway, up in
// SecurityEnvironmentGpg::getPersonalCertificates
return CertificateCharacters::HAS_PRIVATE_KEY;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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