diff options
Diffstat (limited to 'xmlsecurity/source/xmlsec/nss/nssinitializer.cxx')
| -rw-r--r-- | xmlsecurity/source/xmlsec/nss/nssinitializer.cxx | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/xmlsecurity/source/xmlsec/nss/nssinitializer.cxx b/xmlsecurity/source/xmlsec/nss/nssinitializer.cxx new file mode 100644 index 000000000..d64ea10a0 --- /dev/null +++ b/xmlsecurity/source/xmlsec/nss/nssinitializer.cxx @@ -0,0 +1,524 @@ +/* -*- 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 . + */ + +#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 <com/sun/star/uno/XComponentContext.hpp> +#include <cppuhelper/supportsservice.hxx> +#include <officecfg/Office/Common.hxx> +#include <sal/types.h> +#include <rtl/bootstrap.hxx> +#include <rtl/string.hxx> +#include <osl/file.hxx> +#include <osl/thread.h> +#include <sal/log.hxx> +#include <tools/diagnose_ex.h> +#include <unotools/tempfile.hxx> +#include <salhelper/singletonref.hxx> + +#include <nss/nssinitializer.hxx> + +#include "digestcontext.hxx" +#include "ciphercontext.hxx" + +#include <memory> +#include <vector> + +#include <nss.h> +#include <pk11pub.h> +#include <secmod.h> +#include <prerror.h> +#include <prinit.h> + +namespace cssu = css::uno; +namespace cssl = css::lang; + +using namespace com::sun::star; + +#define ROOT_CERTS "Root Certs for OpenOffice.org" + +extern "C" { + +static void nsscrypto_finalize(); + +} + +namespace +{ + +class InitNSSPrivate +{ +private: + std::unique_ptr<utl::TempFile> m_pTempFileDatabaseDirectory; + +public: + OUString getTempDatabasePath() + { + if (!m_pTempFileDatabaseDirectory) + { + m_pTempFileDatabaseDirectory.reset(new utl::TempFile(nullptr, true)); + m_pTempFileDatabaseDirectory->EnableKillingFile(); + } + return m_pTempFileDatabaseDirectory->GetFileName(); + } + + void reset() + { + if (m_pTempFileDatabaseDirectory) + { + m_pTempFileDatabaseDirectory.reset(); + } + } +}; + +salhelper::SingletonRef<InitNSSPrivate>* getInitNSSPrivate() +{ + static salhelper::SingletonRef<InitNSSPrivate> aInitNSSPrivate; + return &aInitNSSPrivate; +} + +bool nsscrypto_initialize( const css::uno::Reference< css::uno::XComponentContext > &rxContext, bool & out_nss_init ); + +#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 pEnv; + } + + // second, try to get saved user-preference + try + { + OUString sUserSetCertPath = + officecfg::Office::Common::Security::Scripting::CertDir::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 &) + { + TOOLS_WARN_EXCEPTION("xmlsecurity.xmlsec", "getMozillaCurrentProfile:"); + } + + // 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 than SECMOD_AddNewModule. The latter would write +//the location of the roots module to the profile, which makes FF2 and TB2 use +//it instead of their 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(css::uno::Reference<css::uno::XComponentContext> const & rxContext, bool & out_nss_init) +{ + // 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 = false; + // there might be no profile + if (!sCertDir.isEmpty()) + { + if (sCertDir.indexOf(':') == -1) //might be env var with explicit prefix + { + OUString sCertDirURL; + osl::FileBase::getFileURLFromSystemPath( + OStringToOUString(sCertDir, osl_getThreadTextEncoding()), + sCertDirURL); + osl::DirectoryItem item; + if (osl::FileBase::E_NOENT != osl::DirectoryItem::get(sCertDirURL + "/cert8.db", item) && + osl::FileBase::E_NOENT == osl::DirectoryItem::get(sCertDirURL + "/cert9.db", item)) + { + SAL_INFO("xmlsecurity.xmlsec", "nsscrypto_initialize: trying to avoid profile migration"); + sCertDir = "dbm:" + sCertDir; + } + } + 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()); + } + } + else + { + bSuccess = true; + } + } + + if (!bSuccess) // Try to create a database in temp dir + { + SAL_INFO("xmlsecurity.xmlsec", "Initializing NSS with a temporary profile."); + OUString rString = (*getInitNSSPrivate())->getTempDatabasePath(); + + if (NSS_InitReadWrite(rString.toUtf8().getStr()) != SECSuccess) + { + SAL_INFO("xmlsecurity.xmlsec", "Initializing NSS with a temporary profile."); + 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; + } + // Initialize and set empty password if needed + PK11SlotInfo* pSlot = PK11_GetInternalKeySlot(); + if (pSlot) + { + if (PK11_NeedUserInit(pSlot)) + PK11_InitPin(pSlot, nullptr, nullptr); + PK11_FreeSlot(pSlot); + } + } + out_nss_init = true; + +#ifdef XMLSEC_CRYPTO_NSS + bool return_value = true; + +#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; + } + } + + return return_value; +#else + return true; +#endif +} + +} // 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(); + + (*getInitNSSPrivate())->reset(); +} + +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 ) +{ + static bool gbInitialized = [&rxContext]() + { + bool bNSSInit = false; + bool bInitialized = nsscrypto_initialize( rxContext, bNSSInit ); + if (bNSSInit) + atexit(nsscrypto_finalize); + return bInitialized; + }(); + return gbInitialized; +} + +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 if ( nDigestID == css::xml::crypto::DigestID::SHA512 + || nDigestID == css::xml::crypto::DigestID::SHA512_1K ) + { + nNSSDigestID = SEC_OID_SHA512; + nDigestLength = 64; + b1KData = ( nDigestID == css::xml::crypto::DigestID::SHA512_1K ); + } + else + throw css::lang::IllegalArgumentException("Unexpected digest requested.", css::uno::Reference< css::uno::XInterface >(), 1 ); + + if ( aParams.hasElements() ) + 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 ) + throw css::lang::IllegalArgumentException("Unexpected cipher requested.", css::uno::Reference< css::uno::XInterface >(), 1 ); + + 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.hasElements() ) + throw css::lang::IllegalArgumentException("Unexpected arguments provided for cipher creation.", css::uno::Reference< css::uno::XInterface >(), 5 ); + + 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; +} + +/* XServiceInfo */ +OUString SAL_CALL ONSSInitializer::getImplementationName() +{ + return "com.sun.star.xml.crypto.NSSInitializer"; +} + +sal_Bool SAL_CALL ONSSInitializer::supportsService( const OUString& rServiceName ) +{ + return cppu::supportsService(this, rServiceName); +} + +cssu::Sequence< OUString > SAL_CALL ONSSInitializer::getSupportedServiceNames( ) +{ + return { NSS_SERVICE_NAME }; +} + +#ifndef XMLSEC_CRYPTO_NSS +extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface* +com_sun_star_xml_crypto_NSSInitializer_get_implementation( + uno::XComponentContext* pCtx, uno::Sequence<uno::Any> const& /*rSeq*/) +{ + return cppu::acquire(new ONSSInitializer(pCtx)); +} +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |