author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:29:21 +0200 | |
changeset 0 | e35f40988205 |
child 24 | 74f0b3eb154c |
permissions | -rw-r--r-- |
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/** |
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* XML Security Library (http://www.aleksey.com/xmlsec). |
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* |
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* Memory buffer transform |
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* |
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* This is free software; see Copyright file in the source |
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* distribution for preciese wording. |
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* |
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* Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com> |
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* Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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*/ |
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#include "xmlsec_globals.h" |
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#include <stdlib.h> |
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#include <string.h> |
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#include <libxml2_tree.h> |
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#include "xmlsec_xmlsec.h" |
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#include "xmlsec_buffer.h" |
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#include "xmlsec_keys.h" |
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#include "xmlsec_transforms.h" |
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#include "xmlsec_keys.h" |
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#include "xmlsec_base64.h" |
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#include "xmlsec_membuf.h" |
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#include "xmlsec_errors.h" |
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/***************************************************************************** |
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* |
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* Memory Buffer Transform |
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* |
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* xmlSecBuffer is located after xmlSecTransform |
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* |
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****************************************************************************/ |
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#define xmlSecTransformMemBufSize \ |
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(sizeof(xmlSecTransform) + sizeof(xmlSecBuffer)) |
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#define xmlSecTransformMemBufGetBuf(transform) \ |
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((xmlSecTransformCheckSize((transform), xmlSecTransformMemBufSize)) ? \ |
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(xmlSecBufferPtr)(((xmlSecByte*)(transform)) + sizeof(xmlSecTransform)) : \ |
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(xmlSecBufferPtr)NULL) |
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static int xmlSecTransformMemBufInitialize (xmlSecTransformPtr transform); |
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static void xmlSecTransformMemBufFinalize (xmlSecTransformPtr transform); |
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static int xmlSecTransformMemBufExecute (xmlSecTransformPtr transform, |
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int last, |
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xmlSecTransformCtxPtr transformCtx); |
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static xmlSecTransformKlass xmlSecTransformMemBufKlass = { |
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/* klass/object sizes */ |
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sizeof(xmlSecTransformKlass), /* xmlSecSize klassSize */ |
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xmlSecTransformMemBufSize, /* xmlSecSize objSize */ |
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xmlSecNameMemBuf, /* const xmlChar* name; */ |
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NULL, /* const xmlChar* href; */ |
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0, /* xmlSecAlgorithmUsage usage; */ |
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xmlSecTransformMemBufInitialize, /* xmlSecTransformInitializeMethod initialize; */ |
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xmlSecTransformMemBufFinalize, /* xmlSecTransformFianlizeMethod finalize; */ |
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NULL, /* xmlSecTransformNodeReadMethod readNode; */ |
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NULL, /* xmlSecTransformNodeWriteMethod writeNode; */ |
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NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */ |
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NULL, /* xmlSecTransformSetKeyMethod setKey; */ |
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NULL, /* xmlSecTransformValidateMethod validate; */ |
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xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */ |
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xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */ |
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xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */ |
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NULL, /* xmlSecTransformPushXmlMethod pushXml; */ |
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NULL, /* xmlSecTransformPopXmlMethod popXml; */ |
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xmlSecTransformMemBufExecute, /* xmlSecTransformExecuteMethod execute; */ |
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NULL, /* void* reserved0; */ |
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NULL, /* void* reserved1; */ |
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}; |
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/** |
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* xmlSecTransformMemBufGetKlass: |
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* |
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* The memory buffer transorm (used to store the data that go through it). |
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* |
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* Returns memory buffer transform klass. |
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*/ |
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EXPORT_C |
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xmlSecTransformId |
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xmlSecTransformMemBufGetKlass(void) { |
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return(&xmlSecTransformMemBufKlass); |
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} |
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/** |
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* xmlSecTransformMemBufGetBuffer: |
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* @transform: the pointer to memory buffer transform. |
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* |
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* Gets the pointer to memory buffer transform buffer. |
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* |
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* Returns pointer to the transform's #xmlSecBuffer. |
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*/ |
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EXPORT_C |
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xmlSecBufferPtr |
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xmlSecTransformMemBufGetBuffer(xmlSecTransformPtr transform) { |
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xmlSecBufferPtr buffer; |
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xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformMemBufId), NULL); |
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buffer = xmlSecTransformMemBufGetBuf(transform); |
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xmlSecAssert2(buffer != NULL, NULL); |
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105 |
return(buffer); |
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106 |
} |
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107 |
|
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108 |
static int |
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109 |
xmlSecTransformMemBufInitialize(xmlSecTransformPtr transform) { |
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110 |
xmlSecBufferPtr buffer; |
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111 |
int ret; |
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112 |
|
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113 |
xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformMemBufId), -1); |
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114 |
|
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115 |
buffer = xmlSecTransformMemBufGetBuf(transform); |
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116 |
xmlSecAssert2(buffer != NULL, -1); |
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117 |
|
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118 |
ret = xmlSecBufferInitialize(buffer, 0); |
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119 |
if(ret < 0) { |
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120 |
xmlSecError(XMLSEC_ERRORS_HERE, |
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121 |
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), |
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122 |
"xmlSecBufferInitialize", |
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123 |
XMLSEC_ERRORS_R_XMLSEC_FAILED, |
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124 |
XMLSEC_ERRORS_NO_MESSAGE); |
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125 |
return(-1); |
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126 |
} |
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127 |
return(0); |
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128 |
} |
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129 |
|
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130 |
static void |
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131 |
xmlSecTransformMemBufFinalize(xmlSecTransformPtr transform) { |
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132 |
xmlSecBufferPtr buffer; |
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133 |
|
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134 |
xmlSecAssert(xmlSecTransformCheckId(transform, xmlSecTransformMemBufId)); |
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135 |
|
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136 |
buffer = xmlSecTransformMemBufGetBuf(transform); |
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|
137 |
xmlSecAssert(buffer != NULL); |
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|
138 |
|
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139 |
xmlSecBufferFinalize(xmlSecTransformMemBufGetBuf(transform)); |
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140 |
} |
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141 |
|
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142 |
static int |
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143 |
xmlSecTransformMemBufExecute(xmlSecTransformPtr transform, int last, xmlSecTransformCtxPtr transformCtx) { |
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144 |
xmlSecBufferPtr buffer; |
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145 |
xmlSecBufferPtr in, out; |
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146 |
xmlSecSize inSize; |
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147 |
int ret; |
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148 |
|
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|
149 |
xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformMemBufId), -1); |
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150 |
xmlSecAssert2(transformCtx != NULL, -1); |
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|
151 |
|
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152 |
buffer = xmlSecTransformMemBufGetBuf(transform); |
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|
153 |
xmlSecAssert2(buffer != NULL, -1); |
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|
154 |
|
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155 |
in = &(transform->inBuf); |
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156 |
out = &(transform->outBuf); |
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157 |
inSize = xmlSecBufferGetSize(in); |
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|
158 |
|
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159 |
if(transform->status == xmlSecTransformStatusNone) { |
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160 |
transform->status = xmlSecTransformStatusWorking; |
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161 |
} |
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|
162 |
|
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163 |
if(transform->status == xmlSecTransformStatusWorking) { |
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164 |
/* just copy everything from in to our buffer and out */ |
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165 |
ret = xmlSecBufferAppend(buffer, xmlSecBufferGetData(in), inSize); |
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|
166 |
if(ret < 0) { |
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|
167 |
xmlSecError(XMLSEC_ERRORS_HERE, |
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|
168 |
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), |
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|
169 |
"xmlSecBufferAppend", |
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|
170 |
XMLSEC_ERRORS_R_XMLSEC_FAILED, |
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|
171 |
"size=%d", inSize); |
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|
172 |
return(-1); |
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|
173 |
} |
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|
174 |
|
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|
175 |
ret = xmlSecBufferAppend(out, xmlSecBufferGetData(in), inSize); |
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|
176 |
if(ret < 0) { |
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|
177 |
xmlSecError(XMLSEC_ERRORS_HERE, |
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|
178 |
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), |
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|
179 |
"xmlSecBufferAppend", |
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|
180 |
XMLSEC_ERRORS_R_XMLSEC_FAILED, |
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|
181 |
"size=%d", inSize); |
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|
182 |
return(-1); |
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|
183 |
} |
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|
184 |
|
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|
185 |
ret = xmlSecBufferRemoveHead(in, inSize); |
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|
186 |
if(ret < 0) { |
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|
187 |
xmlSecError(XMLSEC_ERRORS_HERE, |
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|
188 |
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), |
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|
189 |
"xmlSecBufferRemoveHead", |
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|
190 |
XMLSEC_ERRORS_R_XMLSEC_FAILED, |
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|
191 |
"size=%d", inSize); |
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|
192 |
return(-1); |
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|
193 |
} |
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|
194 |
|
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|
195 |
if(last != 0) { |
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|
196 |
transform->status = xmlSecTransformStatusFinished; |
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|
197 |
} |
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|
198 |
} else if(transform->status == xmlSecTransformStatusFinished) { |
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|
199 |
/* the only way we can get here is if there is no input */ |
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|
200 |
xmlSecAssert2(inSize == 0, -1); |
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|
201 |
} else { |
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|
202 |
xmlSecError(XMLSEC_ERRORS_HERE, |
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|
203 |
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), |
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|
204 |
NULL, |
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|
205 |
XMLSEC_ERRORS_R_INVALID_STATUS, |
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|
206 |
"status=%d", transform->status); |
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|
207 |
return(-1); |
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|
208 |
} |
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|
209 |
return(0); |
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|
210 |
} |
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