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Diffstat (limited to 'xmlsecurity/source/xmlsec/xmlstreamio.cxx')
| -rw-r--r-- | xmlsecurity/source/xmlsec/xmlstreamio.cxx | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/xmlsecurity/source/xmlsec/xmlstreamio.cxx b/xmlsecurity/source/xmlsec/xmlstreamio.cxx new file mode 100644 index 000000000000..d5ba439467fe --- /dev/null +++ b/xmlsecurity/source/xmlsec/xmlstreamio.cxx @@ -0,0 +1,244 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_xmlsecurity.hxx" + +/* + * Implementation of the I/O interfaces based on stream and URI binding + */ +#include "xmlstreamio.hxx" +#include <rtl/ustring.hxx> +#include "rtl/uri.hxx" + +#include <libxml/uri.h> +#include <sal/types.h> +//For reasons that escape me, this is what xmlsec does when size_t is not 4 +#if SAL_TYPES_SIZEOFPOINTER != 4 +# define XMLSEC_NO_SIZE_T +#endif +#include <xmlsec/io.h> + +#define XMLSTREAMIO_INITIALIZED 0x01 +#define XMLSTREAMIO_REGISTERED 0x02 + +/* Global variables */ +/*- + * Enable stream I/O or not. + */ +static char enableXmlStreamIO = 0x00 ; + +::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XUriBinding > m_xUriBinding ; + +extern "C" +int xmlStreamMatch( const char* uri ) +{ + ::com::sun::star::uno::Reference< com::sun::star::io::XInputStream > xInputStream ; + + if( ( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) && + ( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + if( uri == NULL || !m_xUriBinding.is() ) + return 0 ; + //XMLSec first unescapes the uri and calls this function. For example, we pass the Uri + //ObjectReplacements/Object%201 then XMLSec passes ObjectReplacements/Object 1 + //first. If this failed it would try this + //again with the original escaped string. However, it does not get this far, because there + //is another callback registered by libxml which claims to be able to handle this uri. + ::rtl::OUString sUri = + ::rtl::Uri::encode( ::rtl::OUString::createFromAscii( uri ), + rtl_UriCharClassUric, rtl_UriEncodeKeepEscapes, RTL_TEXTENCODING_UTF8); + xInputStream = m_xUriBinding->getUriBinding( sUri ) ; + if (!xInputStream.is()) + { + //Try the the passed in uri directly. + //For old documents prior OOo 3.0. We did not use URIs then. + xInputStream = m_xUriBinding->getUriBinding( + ::rtl::OUString::createFromAscii(uri)); + } + } + if (xInputStream.is()) + return 1; + else + return 0 ; +} + +extern "C" +void* xmlStreamOpen( const char* uri ) +{ + ::com::sun::star::uno::Reference< com::sun::star::io::XInputStream > xInputStream ; + ::com::sun::star::io::XInputStream* pInputStream ; + + if( ( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) && + ( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + if( uri == NULL || !m_xUriBinding.is() ) + return NULL ; + + //see xmlStreamMatch + ::rtl::OUString sUri = + ::rtl::Uri::encode( ::rtl::OUString::createFromAscii( uri ), + rtl_UriCharClassUric, rtl_UriEncodeKeepEscapes, RTL_TEXTENCODING_UTF8); + xInputStream = m_xUriBinding->getUriBinding( sUri ) ; + if (!xInputStream.is()) + { + //For old documents. + //try the the passed in uri directly. + xInputStream = m_xUriBinding->getUriBinding( + ::rtl::OUString::createFromAscii(uri)); + } + + if( xInputStream.is() ) { + pInputStream = xInputStream.get() ; + pInputStream->acquire() ; + return ( void* )pInputStream ; + } + } + + return NULL ; +} + +extern "C" +int xmlStreamRead( void* context, char* buffer, int len ) +{ + int numbers ; + ::com::sun::star::uno::Reference< com::sun::star::io::XInputStream > xInputStream ; + ::com::sun::star::uno::Sequence< sal_Int8 > outSeqs( len ) ; + + numbers = 0 ; + if( ( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) && + ( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + if( context != NULL ) { + xInputStream = ( com::sun::star::io::XInputStream* )context ; + if( !xInputStream.is() ) + return 0 ; + + numbers = xInputStream->readBytes( outSeqs, len ) ; + const sal_Int8* readBytes = ( const sal_Int8* )outSeqs.getArray() ; + for( int i = 0 ; i < numbers ; i ++ ) + *( buffer + i ) = *( readBytes + i ) ; + } + } + + return numbers ; +} + +extern "C" +int xmlStreamClose( void * context ) +{ + ::com::sun::star::io::XInputStream* pInputStream ; + + if( ( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) && + ( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + if( context != NULL ) { + pInputStream = ( ::com::sun::star::io::XInputStream* )context ; + pInputStream->release() ; + } + } + + return 0 ; +} + +int xmlEnableStreamInputCallbacks() +{ + int cbs = 0 ; + + if( !( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) ) { + //Register the callbacks into libxml2 + //cbs = xmlRegisterInputCallbacks( + // xmlStreamMatch, + // xmlStreamOpen, + // xmlStreamRead, + // xmlStreamClose ) ; + //if( cbs < 0 ) { + // return -1 ; + //} + + //Register the callbacks into xmlSec + //In order to make the xmlsec io finding the callbacks firstly, + //I put the callbacks at the very begining. + + //Cleanup the older callbacks. + //Notes: all none default callbacks will lose. + xmlSecIOCleanupCallbacks() ; + + //Register my classbacks. + cbs = xmlSecIORegisterCallbacks( + xmlStreamMatch, + xmlStreamOpen, + xmlStreamRead, + xmlStreamClose ) ; + if( cbs < 0 ) { + return -1 ; + } + + //Register the default callbacks. + //Notes: the error will cause xmlsec working problems. + cbs = xmlSecIORegisterDefaultCallbacks() ; + if( cbs < 0 ) { + return -1 ; + } + + enableXmlStreamIO |= XMLSTREAMIO_INITIALIZED ; + } + + return 0 ; +} + +int xmlRegisterStreamInputCallbacks( + ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XUriBinding >& aUriBinding +) { + if( !( enableXmlStreamIO & XMLSTREAMIO_INITIALIZED ) ) { + if( xmlEnableStreamInputCallbacks() < 0 ) + return -1 ; + } + + if( !( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + enableXmlStreamIO |= XMLSTREAMIO_REGISTERED ; + } + + m_xUriBinding = aUriBinding ; + + return 0 ; +} + +int xmlUnregisterStreamInputCallbacks( void ) +{ + if( ( enableXmlStreamIO & XMLSTREAMIO_REGISTERED ) ) { + //Clear the uir-stream binding + m_xUriBinding.clear() ; + + //disable the registered flag + enableXmlStreamIO &= ~XMLSTREAMIO_REGISTERED ; + } + + return 0 ; +} + +void xmlDisableStreamInputCallbacks() { + xmlUnregisterStreamInputCallbacks() ; + enableXmlStreamIO &= ~XMLSTREAMIO_INITIALIZED ; +} + |