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<h1>atrhandler.c</h1><a href="atrhandler_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * MUSCLE SmartCard Development ( http://www.linuxnet.com )</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 1999-2004</span>
<a name="l00005"></a>00005 <span class="comment"> * David Corcoran <corcoran@linuxnet.com></span>
<a name="l00006"></a>00006 <span class="comment"> * Ludovic Rousseau <ludovic.rousseau@free.fr></span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * $Id: atrhandler.c 4344 2009-07-28 10:54:50Z rousseau $</span>
<a name="l00009"></a>00009 <span class="comment"> */</span>
<a name="l00010"></a>00010
<a name="l00021"></a>00021 <span class="preprocessor">#include "config.h"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <string.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "misc.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="pcsclite_8h.html" title="This keeps a list of defines for pcsc-lite.">pcsclite.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="debuglog_8h.html" title="This handles debugging.">debuglog.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="atrhandler_8h.html" title="This keeps track of smartcard protocols, timing issues and Answer to Reset ATR handling...">atrhandler.h</a>"</span>
<a name="l00028"></a>00028
<a name="l00033"></a>00033 <span class="comment">/* #define ATR_DEBUG */</span>
<a name="l00034"></a>00034
<a name="l00043"></a><a class="code" href="atrhandler_8h.html#a84127d39d788360749d94c602ab3e129">00043</a> <span class="keywordtype">short</span> <a class="code" href="atrhandler_8c.html#a84127d39d788360749d94c602ab3e129" title="Uncomment the following for ATR debugging or use .">ATRDecodeAtr</a>(<a class="code" href="struct__SMARTCARD__EXTENSION.html">PSMARTCARD_EXTENSION</a> psExtension,
<a name="l00044"></a>00044 PUCHAR pucAtr, DWORD dwLength)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 USHORT p;
<a name="l00047"></a>00047 UCHAR K, TCK; <span class="comment">/* MSN of T0/Check Sum */</span>
<a name="l00048"></a>00048 UCHAR Y1i, T; <span class="comment">/* MSN/LSN of TDi */</span>
<a name="l00049"></a>00049 <span class="keywordtype">int</span> i = 1; <span class="comment">/* value of the index in TAi, TBi, etc. */</span>
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">/*</span>
<a name="l00052"></a>00052 <span class="comment"> * Zero out everything</span>
<a name="l00053"></a>00053 <span class="comment"> */</span>
<a name="l00054"></a>00054 p = K = TCK = Y1i = T = 0;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span> <span class="keywordflow">if</span> (dwLength > 0)
<a name="l00058"></a>00058 LogXxd(PCSC_LOG_DEBUG, <span class="stringliteral">"ATR: "</span>, pucAtr, dwLength);
<a name="l00059"></a>00059 <span class="preprocessor">#endif</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span>
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (dwLength < 2)
<a name="l00062"></a>00062 <span class="keywordflow">return</span> 0;
<a name="l00064"></a>00064 <span class="comment">/*</span>
<a name="l00065"></a>00065 <span class="comment"> * Zero out the bitmasks</span>
<a name="l00066"></a>00066 <span class="comment"> */</span>
<a name="l00067"></a>00067 psExtension->CardCapabilities.AvailableProtocols = <a class="code" href="pcsclite_8h.html#a3b42ca2bc25ec7ff3211a25110b4fc60" title="protocol not set">SCARD_PROTOCOL_UNDEFINED</a>;
<a name="l00068"></a>00068 psExtension->CardCapabilities.CurrentProtocol = <a class="code" href="pcsclite_8h.html#a3b42ca2bc25ec7ff3211a25110b4fc60" title="protocol not set">SCARD_PROTOCOL_UNDEFINED</a>;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">/*</span>
<a name="l00071"></a>00071 <span class="comment"> * Decode the TS byte</span>
<a name="l00072"></a>00072 <span class="comment"> */</span>
<a name="l00073"></a>00073 <span class="keywordflow">if</span> (pucAtr[0] == 0x3F)
<a name="l00074"></a>00074 { <span class="comment">/* Inverse convention used */</span>
<a name="l00075"></a>00075 psExtension->CardCapabilities.Convention = SCARD_CONVENTION_INVERSE;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 <span class="keywordflow">else</span>
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (pucAtr[0] == 0x3B)
<a name="l00079"></a>00079 { <span class="comment">/* Direct convention used */</span>
<a name="l00080"></a>00080 psExtension->CardCapabilities.Convention = SCARD_CONVENTION_DIRECT;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082 <span class="keywordflow">else</span>
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 memset(psExtension, 0x00, <span class="keyword">sizeof</span>(<a class="code" href="struct__SMARTCARD__EXTENSION.html">SMARTCARD_EXTENSION</a>));
<a name="l00085"></a>00085 <span class="keywordflow">return</span> 0;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="comment">/*</span>
<a name="l00089"></a>00089 <span class="comment"> * Here comes the platform dependant stuff</span>
<a name="l00090"></a>00090 <span class="comment"> */</span>
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">/*</span>
<a name="l00093"></a>00093 <span class="comment"> * Decode the T0 byte</span>
<a name="l00094"></a>00094 <span class="comment"> */</span>
<a name="l00095"></a>00095 Y1i = pucAtr[1] >> 4; <span class="comment">/* Get the MSN in Y1 */</span>
<a name="l00096"></a>00096 K = pucAtr[1] & 0x0F; <span class="comment">/* Get the LSN in K */</span>
<a name="l00097"></a>00097
<a name="l00098"></a>00098 p = 2;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00101"></a>00101 <span class="preprocessor"></span> Log4(PCSC_LOG_DEBUG, <span class="stringliteral">"Conv: %02X, Y1: %02X, K: %02X"</span>,
<a name="l00102"></a>00102 psExtension->CardCapabilities.Convention, Y1i, K);
<a name="l00103"></a>00103 <span class="preprocessor">#endif</span>
<a name="l00104"></a>00104 <span class="preprocessor"></span>
<a name="l00105"></a>00105 <span class="comment">/*</span>
<a name="l00106"></a>00106 <span class="comment"> * Examine Y1</span>
<a name="l00107"></a>00107 <span class="comment"> */</span>
<a name="l00108"></a>00108 <span class="keywordflow">do</span>
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="keywordtype">short</span> TAi, TBi, TCi, TDi; <span class="comment">/* Interface characters */</span>
<a name="l00111"></a>00111
<a name="l00112"></a>00112 TAi = (Y1i & 0x01) ? pucAtr[p++] : -1;
<a name="l00113"></a>00113 TBi = (Y1i & 0x02) ? pucAtr[p++] : -1;
<a name="l00114"></a>00114 TCi = (Y1i & 0x04) ? pucAtr[p++] : -1;
<a name="l00115"></a>00115 TDi = (Y1i & 0x08) ? pucAtr[p++] : -1;
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span> Log9(PCSC_LOG_DEBUG,
<a name="l00119"></a>00119 <span class="stringliteral">"TA%d: %02X, TB%d: %02X, TC%d: %02X, TD%d: %02X"</span>,
<a name="l00120"></a>00120 i, TAi, i, TBi, i, TCi, i, TDi);
<a name="l00121"></a>00121 <span class="preprocessor">#endif</span>
<a name="l00122"></a>00122 <span class="preprocessor"></span>
<a name="l00123"></a>00123 <span class="comment">/*</span>
<a name="l00124"></a>00124 <span class="comment"> * Examine TDi to determine protocol and more</span>
<a name="l00125"></a>00125 <span class="comment"> */</span>
<a name="l00126"></a>00126 <span class="keywordflow">if</span> (TDi >= 0)
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 Y1i = TDi >> 4; <span class="comment">/* Get the MSN in Y1 */</span>
<a name="l00129"></a>00129 T = TDi & 0x0F; <span class="comment">/* Get the LSN in K */</span>
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">/*</span>
<a name="l00132"></a>00132 <span class="comment"> * Set the current protocol TD1 (first TD only)</span>
<a name="l00133"></a>00133 <span class="comment"> */</span>
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (psExtension->CardCapabilities.CurrentProtocol == <a class="code" href="pcsclite_8h.html#a3b42ca2bc25ec7ff3211a25110b4fc60" title="protocol not set">SCARD_PROTOCOL_UNDEFINED</a>)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 <span class="keywordflow">switch</span> (T)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <span class="keywordflow">case</span> 0:
<a name="l00139"></a>00139 psExtension->CardCapabilities.CurrentProtocol =
<a name="l00140"></a>00140 <a class="code" href="pcsclite_8h.html#a4fe95267c322c3bf35f30fab6b25526c" title="T=0 active protocol.">SCARD_PROTOCOL_T0</a>;
<a name="l00141"></a>00141 <span class="keywordflow">break</span>;
<a name="l00142"></a>00142 <span class="keywordflow">case</span> 1:
<a name="l00143"></a>00143 psExtension->CardCapabilities.CurrentProtocol =
<a name="l00144"></a>00144 <a class="code" href="pcsclite_8h.html#a3c09cd155e07044f857130c183d64f03" title="T=1 active protocol.">SCARD_PROTOCOL_T1</a>;
<a name="l00145"></a>00145 <span class="keywordflow">break</span>;
<a name="l00146"></a>00146 <span class="keywordflow">default</span>:
<a name="l00147"></a>00147 <span class="keywordflow">return</span> 0;
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00152"></a>00152 <span class="preprocessor"></span> Log2(PCSC_LOG_DEBUG, <span class="stringliteral">"T=%d Protocol Found"</span>, T);
<a name="l00153"></a>00153 <span class="preprocessor">#endif</span>
<a name="l00154"></a>00154 <span class="preprocessor"></span> <span class="keywordflow">if</span> (0 == T)
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156 psExtension->CardCapabilities.AvailableProtocols |=
<a name="l00157"></a>00157 <a class="code" href="pcsclite_8h.html#a4fe95267c322c3bf35f30fab6b25526c" title="T=0 active protocol.">SCARD_PROTOCOL_T0</a>;
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 <span class="keywordflow">else</span>
<a name="l00160"></a>00160 <span class="keywordflow">if</span> (1 == T)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 psExtension->CardCapabilities.AvailableProtocols |=
<a name="l00163"></a>00163 <a class="code" href="pcsclite_8h.html#a3c09cd155e07044f857130c183d64f03" title="T=1 active protocol.">SCARD_PROTOCOL_T1</a>;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 <span class="keywordflow">else</span>
<a name="l00166"></a>00166 <span class="keywordflow">if</span> (15 == T)
<a name="l00167"></a>00167 {
<a name="l00168"></a>00168 psExtension->CardCapabilities.AvailableProtocols |=
<a name="l00169"></a>00169 <a class="code" href="pcsclite_8h.html#ad643c6c586c599dc5f6bd78ff13a2a53" title="T=15 protocol.">SCARD_PROTOCOL_T15</a>;
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 <span class="keywordflow">else</span>
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 <span class="comment">/*</span>
<a name="l00174"></a>00174 <span class="comment"> * Do nothing for now since other protocols are not</span>
<a name="l00175"></a>00175 <span class="comment"> * supported at this time</span>
<a name="l00176"></a>00176 <span class="comment"> */</span>
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="comment">/* test presence of TA2 */</span>
<a name="l00180"></a>00180 <span class="keywordflow">if</span> ((2 == i) && (TAi >= 0))
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 T = TAi & 0x0F;
<a name="l00183"></a>00183 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00184"></a>00184 <span class="preprocessor"></span> Log2(PCSC_LOG_DEBUG, <span class="stringliteral">"Specific mode: T=%d"</span>, T);
<a name="l00185"></a>00185 <span class="preprocessor">#endif</span>
<a name="l00186"></a>00186 <span class="preprocessor"></span> <span class="keywordflow">switch</span> (T)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 <span class="keywordflow">case</span> 0:
<a name="l00189"></a>00189 psExtension->CardCapabilities.CurrentProtocol =
<a name="l00190"></a>00190 psExtension->CardCapabilities.AvailableProtocols =
<a name="l00191"></a>00191 <a class="code" href="pcsclite_8h.html#a4fe95267c322c3bf35f30fab6b25526c" title="T=0 active protocol.">SCARD_PROTOCOL_T0</a>;
<a name="l00192"></a>00192 <span class="keywordflow">break</span>;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordflow">case</span> 1:
<a name="l00195"></a>00195 psExtension->CardCapabilities.CurrentProtocol =
<a name="l00196"></a>00196 psExtension->CardCapabilities.AvailableProtocols =
<a name="l00197"></a>00197 <a class="code" href="pcsclite_8h.html#a3c09cd155e07044f857130c183d64f03" title="T=1 active protocol.">SCARD_PROTOCOL_T1</a>;
<a name="l00198"></a>00198 <span class="keywordflow">break</span>;
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="keywordflow">default</span>:
<a name="l00201"></a>00201 <span class="keywordflow">return</span> 0;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204 } <span class="keywordflow">else</span>
<a name="l00205"></a>00205 Y1i = 0;
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (p > <a class="code" href="pcsclite_8h.html#a7ac7915ff6f9baefa66886c98bdbb91e" title="Maximum ATR size.">MAX_ATR_SIZE</a>)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209 memset(psExtension, 0x00, <span class="keyword">sizeof</span>(<a class="code" href="struct__SMARTCARD__EXTENSION.html">SMARTCARD_EXTENSION</a>));
<a name="l00210"></a>00210 <span class="keywordflow">return</span> 0;
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">/* next interface characters index */</span>
<a name="l00214"></a>00214 i++;
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216 <span class="keywordflow">while</span> (Y1i != 0);
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="comment">/*</span>
<a name="l00219"></a>00219 <span class="comment"> * If TDx is not set then the current must be T0</span>
<a name="l00220"></a>00220 <span class="comment"> */</span>
<a name="l00221"></a>00221 <span class="keywordflow">if</span> (psExtension->CardCapabilities.CurrentProtocol == <a class="code" href="pcsclite_8h.html#a3b42ca2bc25ec7ff3211a25110b4fc60" title="protocol not set">SCARD_PROTOCOL_UNDEFINED</a>)
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 psExtension->CardCapabilities.CurrentProtocol = <a class="code" href="pcsclite_8h.html#a4fe95267c322c3bf35f30fab6b25526c" title="T=0 active protocol.">SCARD_PROTOCOL_T0</a>;
<a name="l00224"></a>00224 psExtension->CardCapabilities.AvailableProtocols |= <a class="code" href="pcsclite_8h.html#a4fe95267c322c3bf35f30fab6b25526c" title="T=0 active protocol.">SCARD_PROTOCOL_T0</a>;
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="comment">/*</span>
<a name="l00228"></a>00228 <span class="comment"> * Take care of the historical characters</span>
<a name="l00229"></a>00229 <span class="comment"> */</span>
<a name="l00230"></a>00230 psExtension->ATR.HistoryLength = K;
<a name="l00231"></a>00231 memcpy(psExtension->ATR.HistoryValue, &pucAtr[p], K);
<a name="l00232"></a>00232
<a name="l00233"></a>00233 p = p + K;
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="comment">/*</span>
<a name="l00236"></a>00236 <span class="comment"> * Check to see if TCK character is included It will be included if</span>
<a name="l00237"></a>00237 <span class="comment"> * more than T=0 is supported</span>
<a name="l00238"></a>00238 <span class="comment"> */</span>
<a name="l00239"></a>00239 <span class="keywordflow">if</span> (psExtension->CardCapabilities.AvailableProtocols & <a class="code" href="pcsclite_8h.html#a3c09cd155e07044f857130c183d64f03" title="T=1 active protocol.">SCARD_PROTOCOL_T1</a>)
<a name="l00240"></a>00240 TCK = pucAtr[p++];
<a name="l00241"></a>00241
<a name="l00242"></a>00242 memcpy(psExtension->ATR.Value, pucAtr, p);
<a name="l00243"></a>00243 psExtension->ATR.Length = p; <span class="comment">/* modified from p-1 */</span>
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="preprocessor">#ifdef ATR_DEBUG</span>
<a name="l00246"></a>00246 <span class="preprocessor"></span> Log3(PCSC_LOG_DEBUG, <span class="stringliteral">"CurrentProtocol: %d, AvailableProtocols: %d"</span>,
<a name="l00247"></a>00247 psExtension->CardCapabilities.CurrentProtocol,
<a name="l00248"></a>00248 psExtension->CardCapabilities.AvailableProtocols);
<a name="l00249"></a>00249 <span class="preprocessor">#endif</span>
<a name="l00250"></a>00250 <span class="preprocessor"></span>
<a name="l00251"></a>00251 <span class="keywordflow">return</span> 1;
<a name="l00252"></a>00252 }
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