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
198
199
200
201
202
203
204
205
|
/**
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* XSEC
*
* TXFMBase64 := Class that performs a Base64 transform
*
* Author(s): Berin Lautenbach
*
* $Id: TXFMBase64.cpp 1125514 2011-05-20 19:08:33Z scantor $
*
*/
// XSEC
#include <xsec/transformers/TXFMBase64.hpp>
#include <xsec/utils/XSECPlatformUtils.hpp>
#include <xsec/framework/XSECException.hpp>
XERCES_CPP_NAMESPACE_USE
TXFMBase64::TXFMBase64(DOMDocument *doc, bool decode) : TXFMBase(doc) {
m_complete = false; // Nothing yet to output
m_remaining = 0;
m_doDecode = decode;
mp_b64 = XSECPlatformUtils::g_cryptoProvider->base64();
if (!mp_b64) {
throw XSECException(XSECException::CryptoProviderError,
"Error requesting Base64 object from Crypto Provider");
}
if (decode)
mp_b64->decodeInit();
else
mp_b64->encodeInit();
};
TXFMBase64::~TXFMBase64() {
if (mp_b64 != NULL)
delete mp_b64;
};
// Methods to set the inputs
void TXFMBase64::setInput(TXFMBase *newInput) {
input = newInput;
// Set up for comments
keepComments = input->getCommentsStatus();
}
// Methods to get tranform output type and input requirement
TXFMBase::ioType TXFMBase64::getInputType(void) {
return TXFMBase::BYTE_STREAM;
}
TXFMBase::ioType TXFMBase64::getOutputType(void) {
return TXFMBase::BYTE_STREAM;
}
TXFMBase::nodeType TXFMBase64::getNodeType(void) {
return TXFMBase::DOM_NODE_NONE;
}
// Methods to get output data
unsigned int TXFMBase64::readBytes(XMLByte * const toFill, unsigned int maxToFill) {
unsigned int ret, fill, leftToFill;
ret = 0; // How much have we copied?
leftToFill = maxToFill; // Still have to copy in entire thing
while (ret != maxToFill && (m_complete == false || m_remaining > 0)) {
if (m_remaining != 0) {
// Copy anything remaining in the buffer to the output
fill = (leftToFill > m_remaining ? m_remaining : leftToFill);
memcpy(&toFill[ret], m_outputBuffer, fill);
if (fill < m_remaining)
memmove(m_outputBuffer, m_outputBuffer + fill, (m_remaining - fill));
m_remaining -= fill;
leftToFill -= fill;
ret += fill;
}
// Now do some crypting
if (m_complete == false && m_remaining == 0) {
unsigned int sz = input->readBytes(m_inputBuffer, 1024);
if (m_doDecode) {
if (sz == 0) {
m_complete = true;
m_remaining = mp_b64->decodeFinish(m_outputBuffer, 2048);
}
else
m_remaining = mp_b64->decode(m_inputBuffer, sz, m_outputBuffer, 2048);
}
else {
if (sz == 0) {
m_complete = true;
m_remaining = mp_b64->encodeFinish(m_outputBuffer, 3072);
}
else
m_remaining = mp_b64->encode(m_inputBuffer, sz, m_outputBuffer, 2048);
}
}
}
return ret;
#if 0
unsigned int ret, fill;
if (m_complete)
return 0;
fill = (maxToFill > 2000 ? 2000 : maxToFill);
ret = 0;
while (ret == 0 && !m_complete) {
unsigned int sz = input->readBytes(m_base64Buffer, fill / 2);
if (m_doDecode) {
if (sz == 0)
ret = mp_b64->decodeFinish((unsigned char *) toFill, maxToFill);
else
ret = mp_b64->decode(m_base64Buffer, sz, (unsigned char *) toFill, maxToFill);
if (ret == 0)
m_complete = true;
}
else {
if (sz == 0) {
ret = mp_b64->encodeFinish((unsigned char *) toFill, maxToFill);
m_complete = true;
}
else
ret = mp_b64->encode(m_base64Buffer, sz, (unsigned char *) toFill, maxToFill);
}
}
return ret;
#endif
}
DOMDocument *TXFMBase64::getDocument() {
return NULL;
}
DOMNode * TXFMBase64::getFragmentNode() {
return NULL; // Return a null node
}
const XMLCh * TXFMBase64::getFragmentId() {
return NULL; // Empty string
}
|
