xmlsecurity/source/helper/xmlsignaturehelper2.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <xmlsignaturehelper.hxx>
  21 #include <xmlsignaturehelper2.hxx>
  22
  23 #include <tools/solar.h>
  24 #include <unotools/streamhelper.hxx>
  25
  26 #include <com/sun/star/embed/XStorage.hpp>
  27 #include <com/sun/star/embed/XStorageRawAccess.hpp>
  28 #include <com/sun/star/embed/ElementModes.hpp>
  29 #include <com/sun/star/beans/XPropertySet.hpp>
  30 #include <osl/diagnose.h>
  31 #include <rtl/uri.hxx>
  32
  33 using namespace com::sun::star;
  34
  35 // XUriBinding
  36
  37 UriBindingHelper::UriBindingHelper()
  38 {
  39 }
  40
  41 UriBindingHelper::UriBindingHelper( const css::uno::Reference < css::embed::XStorage >& rxStorage )
  42 {
  43     mxStorage = rxStorage;
  44 }
  45
  46 void SAL_CALL UriBindingHelper::setUriBinding( const OUString& /*uri*/, const uno::Reference< io::XInputStream >&)
  47 {
  48 }
  49
  50 uno::Reference< io::XInputStream > SAL_CALL UriBindingHelper::getUriBinding( const OUString& uri )
  51 {
  52     uno::Reference< io::XInputStream > xInputStream;
  53     if ( mxStorage.is() )
  54     {
  55         xInputStream = OpenInputStream( mxStorage, uri );
  56     }
  57     else
  58     {
  59         SvFileStream* pStream = new SvFileStream( uri, StreamMode::READ );
  60         pStream->Seek( STREAM_SEEK_TO_END );
  61         sal_uLong nBytes = pStream->Tell();
  62         pStream->Seek( STREAM_SEEK_TO_BEGIN );
  63         SvLockBytesRef xLockBytes = new SvLockBytes( pStream, true );
  64         xInputStream = new utl::OInputStreamHelper( xLockBytes, nBytes );
  65     }
  66     return xInputStream;
  67 }
  68
  69 uno::Reference < io::XInputStream > UriBindingHelper::OpenInputStream( const uno::Reference < embed::XStorage >& rxStore, const OUString& rURI )
  70 {
  71     OSL_ASSERT(!rURI.isEmpty());
  72     uno::Reference < io::XInputStream > xInStream;
  73
  74     OUString aURI(rURI);
  75     // Ignore leading slash, don't attempt to open a storage with name "".
  76     if (aURI.startsWith("/"))
  77         aURI = aURI.copy(1);
  78     // Ignore query part of the URI.
  79     sal_Int32 nQueryPos = aURI.indexOf('?');
  80     if (nQueryPos != -1)
  81         aURI = aURI.copy(0, nQueryPos);
  82
  83
  84     sal_Int32 nSepPos = aURI.indexOf( '/' );
  85     if ( nSepPos == -1 )
  86     {
  87         // Cloning because of I can't keep all storage references open
  88         // MBA with think about a better API...
  89         const OUString sName = ::rtl::Uri::decode(
  90             aURI, rtl_UriDecodeStrict, rtl_UriCharClassRelSegment);
  91         if (sName.isEmpty() && !aURI.isEmpty())
  92             throw uno::Exception("Could not decode URI for stream element.", nullptr);
  93
  94         uno::Reference< io::XStream > xStream;
  95         uno::Reference<container::XNameAccess> xNameAccess(rxStore, uno::UNO_QUERY);
  96         if (!xNameAccess->hasByName(sName))
  97             SAL_WARN("xmlsecurity.helper", "expected stream, but not found: " << sName);
  98         else
  99             xStream = rxStore->cloneStreamElement( sName );
 100         if ( !xStream.is() )
 101             throw uno::RuntimeException();
 102         xInStream = xStream->getInputStream();
 103     }
 104     else
 105     {
 106         const OUString aStoreName = ::rtl::Uri::decode(
 107             aURI.copy( 0, nSepPos ), rtl_UriDecodeStrict, rtl_UriCharClassRelSegment);
 108         if (aStoreName.isEmpty() && !aURI.isEmpty())
 109             throw uno::Exception("Could not decode URI for stream element.", nullptr);
 110
 111         OUString aElement = aURI.copy( nSepPos+1 );
 112         uno::Reference < embed::XStorage > xSubStore = rxStore->openStorageElement( aStoreName, embed::ElementModes::READ );
 113         xInStream = OpenInputStream( xSubStore, aElement );
 114     }
 115     return xInStream;
 116 }
 117
 118 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */