summaryrefslogtreecommitdiffstats
path: root/xmlsecurity/source/framework/signatureengine.cxx
blob: 095b2d04d4d79a8980c1d8c57b841b9c32947ba1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
/* -*- 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 <framework/signatureengine.hxx>
#include <framework/xmlsignaturetemplateimpl.hxx>
#include <rtl/ref.hxx>

namespace com::sun::star::xml::wrapper { class XXMLElementWrapper; }

using namespace com::sun::star::uno;

SignatureEngine::SignatureEngine()
    : m_nTotalReferenceNumber(-1)
{
}

bool SignatureEngine::checkReady() const
/****** SignatureEngine/checkReady *******************************************
 *
 *   NAME
 *  checkReady -- checks the conditions for the main operation.
 *
 *   SYNOPSIS
 *  bReady = checkReady( );
 *
 *   FUNCTION
 *  checks whether all following conditions are satisfied:
 *  1. the main operation has't begun yet;
 *  2. the key material is known;
 *  3. the amount of reference is known;
 *  4. all of referenced elements, the key element and the signature
 *     template are buffered.
 *
 *   RESULT
 *  bReady - true if all conditions are satisfied, false otherwise
 ******************************************************************************/
{
    bool rc = true;

    sal_Int32 nKeyInc = 0;
    if (m_nIdOfKeyEC != 0)
    {
        nKeyInc = 1;
    }

    if (m_bMissionDone ||
        m_nIdOfKeyEC == -1 ||
        m_nTotalReferenceNumber == -1 ||
        m_nTotalReferenceNumber+1+nKeyInc > m_nNumOfResolvedReferences)
    {
        rc = false;
    }

    return rc;
}

void SignatureEngine::tryToPerform( )
/****** SignatureEngine/tryToPerform *****************************************
 *
 *   NAME
 *  tryToPerform -- tries to perform the signature operation.
 *
 *   FUNCTION
 *  if the situation is ready, perform following operations.
 *  1. prepares a signature template;
 *  2. calls the signature bridge component;
 *  3. clears up all used resources;
 *  4. notifies the result listener;
 *  5. sets the "accomplishment" flag.
 ******************************************************************************/
{
    if (checkReady())
    {
        rtl::Reference<XMLSignatureTemplateImpl> xSignatureTemplate = new XMLSignatureTemplateImpl();

        css::uno::Reference< css::xml::wrapper::XXMLElementWrapper >
            xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );

        xSignatureTemplate->setTemplate(xXMLElement);

        for( const auto i : m_vReferenceIds )
        {
            xXMLElement = m_xSAXEventKeeper->getElement( i );
            xSignatureTemplate->setTarget(xXMLElement);
        }

        /*
         * set the Uri binding
         */
        xSignatureTemplate->setBinding( this );

        startEngine(xSignatureTemplate);

        /*
         * done
         */
        clearUp( );

        notifyResultListener();

        m_bMissionDone = true;
    }
}

void SignatureEngine::clearUp( ) const
/****** SignatureEngine/clearUp **********************************************
 *
 *   NAME
 *  clearUp -- clear up all resources used by this operation.
 *
 *   FUNCTION
 *  cleaning resources up includes:
 *  1. releases the ElementCollector for the signature template element;
 *  2. releases ElementCollectors for referenced elements;
 *  3. releases the ElementCollector for the key element, if there is one.
 ******************************************************************************/
{
    css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedBroadcaster >
        xReferenceResolvedBroadcaster( m_xSAXEventKeeper, css::uno::UNO_QUERY );
    xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
        m_nIdOfTemplateEC,
        static_cast<const css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedListener > >(static_cast<SecurityEngine *>(const_cast<SignatureEngine *>(this))));

    m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);

    for( const auto& i : m_vReferenceIds )
    {
        xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
            i,
            static_cast<const css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedListener > >(static_cast<SecurityEngine *>(const_cast<SignatureEngine *>(this))));
        m_xSAXEventKeeper->removeElementCollector(i);
    }

    if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
    {
        m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
    }
}

/* XReferenceCollector */
void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count )
{
    m_nTotalReferenceNumber = count;
    tryToPerform();
}

void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id )
{
    m_vReferenceIds.push_back( id );
}

/* XUriBinding */
void SAL_CALL SignatureEngine::setUriBinding(
    const OUString& uri,
    const css::uno::Reference< css::io::XInputStream >& aInputStream )
{
    m_vUris.push_back(uri);
    m_vXInputStreams.push_back(aInputStream);
}

css::uno::Reference< css::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const OUString& uri )
{
    css::uno::Reference< css::io::XInputStream > xInputStream;

    int size = m_vUris.size();

    for( int i=0; i<size; ++i)
    {
        if (m_vUris[i] == uri)
        {
            xInputStream = m_vXInputStreams[i];
            break;
        }
    }

    return xInputStream;
}


/* vim:set shiftwidth=4 softtabstop=4 expandtab: */