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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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
/*
* and turn off the additional virtual methods which are part of some interfaces when compiled
* with debug
*/
#undef DEBUG
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/mozilla/XMozillaBootstrap.hpp>
#include <com/sun/star/xml/crypto/DigestID.hpp>
#include <com/sun/star/xml/crypto/CipherID.hpp>
#include <cppuhelper/supportsservice.hxx>
#include <officecfg/Office/Common.hxx>
#include <sal/types.h>
#include <rtl/instance.hxx>
#include <rtl/bootstrap.hxx>
#include <rtl/string.hxx>
#include <rtl/strbuf.hxx>
#include <osl/file.hxx>
#include <osl/thread.h>
#include <sal/log.hxx>
#include "seinitializer_nssimpl.hxx"
#include "securityenvironment_nssimpl.hxx"
#include "digestcontext.hxx"
#include "ciphercontext.hxx"
#include <memory>
#include <nspr.h>
#include <cert.h>
#include <nss.h>
#include <pk11pub.h>
#include <secmod.h>
#include <nssckbi.h>
namespace cssu = css::uno;
namespace cssl = css::lang;
using namespace com::sun::star;
#define IMPLEMENTATION_NAME "com.sun.star.xml.security.bridge.xmlsec.NSSInitializer_NssImpl"
#define ROOT_CERTS "Root Certs for OpenOffice.org"
extern "C" void nsscrypto_finalize();
namespace
{
bool nsscrypto_initialize( const css::uno::Reference< css::uno::XComponentContext > &rxContext, bool & out_nss_init );
struct InitNSSInitialize
{
css::uno::Reference< css::uno::XComponentContext > m_xContext;
explicit InitNSSInitialize(const css::uno::Reference<css::uno::XComponentContext> &rxContext)
: m_xContext(rxContext)
{
}
bool * operator()()
{
static bool bInitialized = false;
bool bNSSInit = false;
bInitialized = nsscrypto_initialize( m_xContext, bNSSInit );
if (bNSSInit)
atexit(nsscrypto_finalize );
return & bInitialized;
}
};
struct GetNSSInitStaticMutex
{
::osl::Mutex* operator()()
{
static ::osl::Mutex aNSSInitMutex;
return &aNSSInitMutex;
}
};
#ifdef XMLSEC_CRYPTO_NSS
void deleteRootsModule()
{
SECMODModule *RootsModule = nullptr;
SECMODModuleList *list = SECMOD_GetDefaultModuleList();
SECMODListLock *lock = SECMOD_GetDefaultModuleListLock();
SECMOD_GetReadLock(lock);
while (!RootsModule && list)
{
SECMODModule *module = list->module;
for (int i=0; i < module->slotCount; i++)
{
PK11SlotInfo *slot = module->slots[i];
if (PK11_IsPresent(slot))
{
if (PK11_HasRootCerts(slot))
{
SAL_INFO("xmlsecurity.xmlsec", "The root certificates module \"" << module->commonName << "\" is already loaded: " << module->dllName);
RootsModule = SECMOD_ReferenceModule(module);
break;
}
}
}
list = list->next;
}
SECMOD_ReleaseReadLock(lock);
if (RootsModule)
{
PRInt32 modType;
if (SECSuccess == SECMOD_DeleteModule(RootsModule->commonName, &modType))
{
SAL_INFO("xmlsecurity.xmlsec", "Deleted module \"" << RootsModule->commonName << "\".");
}
else
{
SAL_INFO("xmlsecurity.xmlsec", "Failed to delete \"" << RootsModule->commonName << "\": " << RootsModule->dllName);
}
SECMOD_DestroyModule(RootsModule);
RootsModule = nullptr;
}
}
OString getMozillaCurrentProfile( const css::uno::Reference< css::uno::XComponentContext > &rxContext )
{
// first, try to get the profile from "MOZILLA_CERTIFICATE_FOLDER"
const char* pEnv = getenv("MOZILLA_CERTIFICATE_FOLDER");
if (pEnv)
{
SAL_INFO(
"xmlsecurity.xmlsec",
"Using Mozilla profile from MOZILLA_CERTIFICATE_FOLDER=" << pEnv);
return OString(pEnv);
}
// second, try to get saved user-preference
try
{
OUString sUserSetCertPath =
officecfg::Office::Common::Security::Scripting::CertDir::get().get_value_or(OUString());
if (!sUserSetCertPath.isEmpty())
{
SAL_INFO(
"xmlsecurity.xmlsec",
"Using Mozilla profile from /org.openoffice.Office.Common/"
"Security/Scripting/CertDir: " << sUserSetCertPath);
return OUStringToOString(sUserSetCertPath, osl_getThreadTextEncoding());
}
}
catch (const uno::Exception &e)
{
SAL_WARN(
"xmlsecurity.xmlsec",
"getMozillaCurrentProfile: caught exception " << e.Message);
}
// third, dig around to see if there's one available
mozilla::MozillaProductType productTypes[3] = {
mozilla::MozillaProductType_Thunderbird,
mozilla::MozillaProductType_Firefox,
mozilla::MozillaProductType_Mozilla };
uno::Reference<uno::XInterface> xInstance = rxContext->getServiceManager()->createInstanceWithContext("com.sun.star.mozilla.MozillaBootstrap", rxContext);
OSL_ENSURE( xInstance.is(), "failed to create instance" );
uno::Reference<mozilla::XMozillaBootstrap> xMozillaBootstrap(xInstance,uno::UNO_QUERY);
OSL_ENSURE( xMozillaBootstrap.is(), "failed to create instance" );
if (xMozillaBootstrap.is())
{
for (int i=0; i<int(SAL_N_ELEMENTS(productTypes)); ++i)
{
OUString profile = xMozillaBootstrap->getDefaultProfile(productTypes[i]);
if (!profile.isEmpty())
{
OUString sProfilePath = xMozillaBootstrap->getProfilePath( productTypes[i], profile );
SAL_INFO(
"xmlsecurity.xmlsec",
"Using Mozilla profile " << sProfilePath);
return OUStringToOString(sProfilePath, osl_getThreadTextEncoding());
}
}
}
SAL_INFO("xmlsecurity.xmlsec", "No Mozilla profile found");
return OString();
}
#endif
//Older versions of Firefox (FF), for example FF2, and Thunderbird (TB) 2 write
//the roots certificate module (libnssckbi.so), which they use, into the
//profile. This module will then already be loaded during NSS_Init (and the
//other init functions). This fails in two cases. First, FF3 was used to create
//the profile, or possibly used that profile before, and second the profile was
//used on a different platform.
//
//Then one needs to add the roots module oneself. This should be done with
//SECMOD_LoadUserModule rather then SECMOD_AddNewModule. The latter would write
//the location of the roots module to the profile, which makes FF2 and TB2 use
//it instead of there own module.
//
//When using SYSTEM_NSS then the libnss3.so lib is typically found in /usr/lib.
//This folder may, however, NOT contain the roots certificate module. That is,
//just providing the library name in SECMOD_LoadUserModule or
//SECMOD_AddNewModule will FAIL to load the mozilla unless the LD_LIBRARY_PATH
//contains an FF or TB installation.
//ATTENTION: DO NOT call this function directly instead use initNSS
//return true - whole initialization was successful
//param out_nss_init = true: at least the NSS initialization (NSS_InitReadWrite
//was successful and therefore NSS_Shutdown should be called when terminating.
bool nsscrypto_initialize( const css::uno::Reference< css::uno::XComponentContext > &rxContext, bool & out_nss_init )
{
bool return_value = true;
// this method must be called only once, no need for additional lock
OString sCertDir;
#ifdef XMLSEC_CRYPTO_NSS
sCertDir = getMozillaCurrentProfile(rxContext);
#else
(void) rxContext;
#endif
SAL_INFO("xmlsecurity.xmlsec", "Using profile: " << sCertDir );
PR_Init( PR_USER_THREAD, PR_PRIORITY_NORMAL, 1 ) ;
bool bSuccess = true;
// there might be no profile
if ( !sCertDir.isEmpty() )
{
if( NSS_InitReadWrite( sCertDir.getStr() ) != SECSuccess )
{
SAL_INFO("xmlsecurity.xmlsec", "Initializing NSS with profile failed.");
int errlen = PR_GetErrorTextLength();
if(errlen > 0)
{
std::unique_ptr<char[]> const error(new char[errlen + 1]);
PR_GetErrorText(error.get());
SAL_INFO("xmlsecurity.xmlsec", error.get());
}
bSuccess = false;
}
}
if( sCertDir.isEmpty() || !bSuccess )
{
SAL_INFO("xmlsecurity.xmlsec", "Initializing NSS without profile.");
if ( NSS_NoDB_Init(nullptr) != SECSuccess )
{
SAL_INFO("xmlsecurity.xmlsec", "Initializing NSS without profile failed.");
int errlen = PR_GetErrorTextLength();
if(errlen > 0)
{
std::unique_ptr<char[]> const error(new char[errlen + 1]);
PR_GetErrorText(error.get());
SAL_INFO("xmlsecurity.xmlsec", error.get());
}
return false ;
}
}
out_nss_init = true;
#ifdef XMLSEC_CRYPTO_NSS
#if defined SYSTEM_NSS
if (!SECMOD_HasRootCerts())
#endif
{
deleteRootsModule();
#if defined SYSTEM_NSS
OUString rootModule("libnssckbi" SAL_DLLEXTENSION);
#else
OUString rootModule("${LO_LIB_DIR}/libnssckbi" SAL_DLLEXTENSION);
#endif
::rtl::Bootstrap::expandMacros(rootModule);
OUString rootModulePath;
if (::osl::File::E_None == ::osl::File::getSystemPathFromFileURL(rootModule, rootModulePath))
{
OString ospath = OUStringToOString(rootModulePath, osl_getThreadTextEncoding());
OString aStr = "name=\"" ROOT_CERTS "\" library=\"" + ospath + "\"";
SECMODModule * RootsModule =
SECMOD_LoadUserModule(
const_cast<char*>(aStr.getStr()),
nullptr, // no parent
PR_FALSE); // do not recurse
if (RootsModule)
{
bool found = RootsModule->loaded;
SECMOD_DestroyModule(RootsModule);
RootsModule = nullptr;
if (found)
SAL_INFO("xmlsecurity.xmlsec", "Added new root certificate module " ROOT_CERTS " contained in " << ospath);
else
{
SAL_INFO("xmlsecurity.xmlsec", "FAILED to load the new root certificate module " ROOT_CERTS "contained in " << ospath);
return_value = false;
}
}
else
{
SAL_INFO("xmlsecurity.xmlsec", "FAILED to add new root certificate module " ROOT_CERTS " contained in " << ospath);
return_value = false;
}
}
else
{
SAL_INFO("xmlsecurity.xmlsec", "Adding new root certificate module failed.");
return_value = false;
}
}
#endif
return return_value;
}
} // namespace
// must be extern "C" because we pass the function pointer to atexit
extern "C" void nsscrypto_finalize()
{
SECMODModule *RootsModule = SECMOD_FindModule(ROOT_CERTS);
if (RootsModule)
{
if (SECSuccess == SECMOD_UnloadUserModule(RootsModule))
{
SAL_INFO("xmlsecurity.xmlsec", "Unloaded module \"" ROOT_CERTS "\".");
}
else
{
SAL_INFO("xmlsecurity.xmlsec", "Failed unloading module \"" ROOT_CERTS "\".");
}
SECMOD_DestroyModule(RootsModule);
}
else
{
SAL_INFO("xmlsecurity.xmlsec", "Unloading module \"" ROOT_CERTS "\" failed because it was not found.");
}
PK11_LogoutAll();
(void)NSS_Shutdown();
}
ONSSInitializer::ONSSInitializer(
const css::uno::Reference< css::uno::XComponentContext > &rxContext)
:m_xContext( rxContext )
{
}
ONSSInitializer::~ONSSInitializer()
{
}
bool ONSSInitializer::initNSS( const css::uno::Reference< css::uno::XComponentContext > &rxContext )
{
return *rtl_Instance< bool, InitNSSInitialize, ::osl::MutexGuard, GetNSSInitStaticMutex >
::create( InitNSSInitialize( rxContext ), GetNSSInitStaticMutex() );
}
css::uno::Reference< css::xml::crypto::XDigestContext > SAL_CALL ONSSInitializer::getDigestContext( ::sal_Int32 nDigestID, const css::uno::Sequence< css::beans::NamedValue >& aParams )
{
SECOidTag nNSSDigestID = SEC_OID_UNKNOWN;
sal_Int32 nDigestLength = 0;
bool b1KData = false;
if ( nDigestID == css::xml::crypto::DigestID::SHA256
|| nDigestID == css::xml::crypto::DigestID::SHA256_1K )
{
nNSSDigestID = SEC_OID_SHA256;
nDigestLength = 32;
b1KData = ( nDigestID == css::xml::crypto::DigestID::SHA256_1K );
}
else if ( nDigestID == css::xml::crypto::DigestID::SHA1
|| nDigestID == css::xml::crypto::DigestID::SHA1_1K )
{
nNSSDigestID = SEC_OID_SHA1;
nDigestLength = 20;
b1KData = ( nDigestID == css::xml::crypto::DigestID::SHA1_1K );
}
else
throw css::lang::IllegalArgumentException("Unexpected digest requested.", css::uno::Reference< css::uno::XInterface >(), 1 );
if ( aParams.getLength() )
throw css::lang::IllegalArgumentException("Unexpected arguments provided for digest creation.", css::uno::Reference< css::uno::XInterface >(), 2 );
css::uno::Reference< css::xml::crypto::XDigestContext > xResult;
if( initNSS( m_xContext ) )
{
PK11Context* pContext = PK11_CreateDigestContext( nNSSDigestID );
if ( pContext && PK11_DigestBegin( pContext ) == SECSuccess )
xResult = new ODigestContext( pContext, nDigestLength, b1KData );
}
return xResult;
}
css::uno::Reference< css::xml::crypto::XCipherContext > SAL_CALL ONSSInitializer::getCipherContext( ::sal_Int32 nCipherID, const css::uno::Sequence< ::sal_Int8 >& aKey, const css::uno::Sequence< ::sal_Int8 >& aInitializationVector, sal_Bool bEncryption, const css::uno::Sequence< css::beans::NamedValue >& aParams )
{
CK_MECHANISM_TYPE nNSSCipherID = 0;
bool bW3CPadding = false;
if ( nCipherID == css::xml::crypto::CipherID::AES_CBC_W3C_PADDING )
{
nNSSCipherID = CKM_AES_CBC;
bW3CPadding = true;
if ( aKey.getLength() != 16 && aKey.getLength() != 24 && aKey.getLength() != 32 )
throw css::lang::IllegalArgumentException("Unexpected key length.", css::uno::Reference< css::uno::XInterface >(), 2 );
if ( aParams.getLength() )
throw css::lang::IllegalArgumentException("Unexpected arguments provided for cipher creation.", css::uno::Reference< css::uno::XInterface >(), 5 );
}
else
throw css::lang::IllegalArgumentException("Unexpected cipher requested.", css::uno::Reference< css::uno::XInterface >(), 1 );
css::uno::Reference< css::xml::crypto::XCipherContext > xResult;
if( initNSS( m_xContext ) )
{
if ( aInitializationVector.getLength() != PK11_GetIVLength( nNSSCipherID ) )
throw css::lang::IllegalArgumentException("Unexpected length of initialization vector.", css::uno::Reference< css::uno::XInterface >(), 3 );
xResult = OCipherContext::Create( nNSSCipherID, aKey, aInitializationVector, bEncryption, bW3CPadding );
}
return xResult;
}
OUString ONSSInitializer_getImplementationName ()
{
return OUString ( IMPLEMENTATION_NAME );
}
cssu::Sequence< OUString > SAL_CALL ONSSInitializer_getSupportedServiceNames( )
{
cssu::Sequence<OUString> aRet { NSS_SERVICE_NAME };
return aRet;
}
cssu::Reference< cssu::XInterface > SAL_CALL ONSSInitializer_createInstance( const cssu::Reference< cssl::XMultiServiceFactory > & rSMgr)
{
return static_cast<cppu::OWeakObject*>(new ONSSInitializer( comphelper::getComponentContext(rSMgr) ));
}
/* XServiceInfo */
OUString SAL_CALL ONSSInitializer::getImplementationName()
{
return ONSSInitializer_getImplementationName();
}
sal_Bool SAL_CALL ONSSInitializer::supportsService( const OUString& rServiceName )
{
return cppu::supportsService(this, rServiceName);
}
cssu::Sequence< OUString > SAL_CALL ONSSInitializer::getSupportedServiceNames( )
{
return ONSSInitializer_getSupportedServiceNames();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|