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<h1>nfc-mfultralight.c</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*-</span>
<a name="l00002"></a>00002 <span class="comment"> * Public platform independent Near Field Communication (NFC) library examples</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2009, Roel Verdult</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2010, Romuald Conty</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00008"></a>00008 <span class="comment"> * modification, are permitted provided that the following conditions are met:</span>
<a name="l00009"></a>00009 <span class="comment"> * 1) Redistributions of source code must retain the above copyright notice,</span>
<a name="l00010"></a>00010 <span class="comment"> * this list of conditions and the following disclaimer. </span>
<a name="l00011"></a>00011 <span class="comment"> * 2 )Redistributions in binary form must reproduce the above copyright</span>
<a name="l00012"></a>00012 <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span>
<a name="l00013"></a>00013 <span class="comment"> * documentation and/or other materials provided with the distribution.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</span>
<a name="l00016"></a>00016 <span class="comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
<a name="l00017"></a>00017 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
<a name="l00018"></a>00018 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE</span>
<a name="l00019"></a>00019 <span class="comment"> * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
<a name="l00020"></a>00020 <span class="comment"> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span>
<a name="l00021"></a>00021 <span class="comment"> * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span>
<a name="l00022"></a>00022 <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span>
<a name="l00023"></a>00023 <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span>
<a name="l00024"></a>00024 <span class="comment"> * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span>
<a name="l00025"></a>00025 <span class="comment"> * POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00026"></a>00026 <span class="comment"> * </span>
<a name="l00027"></a>00027 <span class="comment"> * Note that this license only applies on the examples, NFC library itself is under LGPL</span>
<a name="l00028"></a>00028 <span class="comment"> *</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030
<a name="l00036"></a>00036 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor"># include "config.h"</span>
<a name="l00038"></a>00038 <span class="preprocessor">#endif // HAVE_CONFIG_H</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <stdio.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <stdint.h></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <stddef.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <stdbool.h></span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="preprocessor">#include <string.h></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <ctype.h></span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#include <nfc/nfc.h></span>
<a name="l00050"></a>00050 <span class="preprocessor">#include <nfc/nfc-messages.h></span>
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="preprocessor">#include "mifare.h"</span>
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">static</span> <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pnd;
<a name="l00055"></a>00055 <span class="keyword">static</span> <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt;
<a name="l00056"></a>00056 <span class="keyword">static</span> mifare_param mp;
<a name="l00057"></a>00057 <span class="keyword">static</span> mifareul_tag mtDump;
<a name="l00058"></a>00058 <span class="keyword">static</span> uint32_t uiBlocks = 0xF;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="structnfc__modulation__t.html" title="NFC modulation structure.">nfc_modulation_t</a> nmMifare = {
<a name="l00061"></a>00061 .nmt = NMT_ISO14443A,
<a name="l00062"></a>00062 .nbr = NBR_106,
<a name="l00063"></a>00063 };
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00066"></a>00066 print_success_or_failure (<span class="keywordtype">bool</span> bFailure, uint32_t * uiCounter)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 printf (<span class="stringliteral">"%c"</span>, (bFailure) ? <span class="charliteral">'x'</span> : <span class="charliteral">'.'</span>);
<a name="l00069"></a>00069 <span class="keywordflow">if</span> (uiCounter)
<a name="l00070"></a>00070 *uiCounter += (bFailure) ? 0 : 1;
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">static</span> <span class="keywordtype">bool</span>
<a name="l00074"></a>00074 read_card (<span class="keywordtype">void</span>)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 uint32_t page;
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> bFailure = <span class="keyword">false</span>;
<a name="l00078"></a>00078 uint32_t uiReadedPages = 0;
<a name="l00079"></a>00079
<a name="l00080"></a>00080 printf (<span class="stringliteral">"Reading %d pages |"</span>, uiBlocks + 1);
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">for</span> (page = 0; page <= uiBlocks; page += 4) {
<a name="l00083"></a>00083 <span class="comment">// Try to read out the data block</span>
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (nfc_initiator_mifare_cmd (pnd, MC_READ, page, &mp)) {
<a name="l00085"></a>00085 memcpy (mtDump.amb[page / 4].mbd.abtData, mp.mpd.abtData, 16);
<a name="l00086"></a>00086 } <span class="keywordflow">else</span> {
<a name="l00087"></a>00087 bFailure = <span class="keyword">true</span>;
<a name="l00088"></a>00088 <span class="keywordflow">break</span>;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 print_success_or_failure (bFailure, &uiReadedPages);
<a name="l00092"></a>00092 print_success_or_failure (bFailure, &uiReadedPages);
<a name="l00093"></a>00093 print_success_or_failure (bFailure, &uiReadedPages);
<a name="l00094"></a>00094 print_success_or_failure (bFailure, &uiReadedPages);
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 printf (<span class="stringliteral">"|\n"</span>);
<a name="l00097"></a>00097 printf (<span class="stringliteral">"Done, %d of %d pages readed.\n"</span>, uiReadedPages, uiBlocks + 1);
<a name="l00098"></a>00098 fflush (stdout);
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">return</span> (!bFailure);
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="keyword">static</span> <span class="keywordtype">bool</span>
<a name="l00104"></a>00104 write_card (<span class="keywordtype">void</span>)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 uint32_t uiBlock = 0;
<a name="l00107"></a>00107 <span class="keywordtype">bool</span> bFailure = <span class="keyword">false</span>;
<a name="l00108"></a>00108 uint32_t uiWritenPages = 0;
<a name="l00109"></a>00109 uint32_t uiSkippedPages;
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keywordtype">char</span> buffer[BUFSIZ];
<a name="l00112"></a>00112 <span class="keywordtype">bool</span> write_otp;
<a name="l00113"></a>00113 <span class="keywordtype">bool</span> write_lock;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 printf (<span class="stringliteral">"Write OTP bytes ? [yN] "</span>);
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (!fgets (buffer, BUFSIZ, stdin)) {
<a name="l00117"></a>00117 ERR (<span class="stringliteral">"Unable to read standard input."</span>);
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 write_otp = ((buffer[0] == <span class="charliteral">'y'</span>) || (buffer[0] == <span class="charliteral">'Y'</span>));
<a name="l00120"></a>00120 printf (<span class="stringliteral">"Write Lock bytes ? [yN] "</span>);
<a name="l00121"></a>00121 <span class="keywordflow">if</span> (!fgets (buffer, BUFSIZ, stdin)) {
<a name="l00122"></a>00122 ERR (<span class="stringliteral">"Unable to read standard input."</span>);
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124 write_lock = ((buffer[0] == <span class="charliteral">'y'</span>) || (buffer[0] == <span class="charliteral">'Y'</span>));
<a name="l00125"></a>00125
<a name="l00126"></a>00126 printf (<span class="stringliteral">"Writing %d pages |"</span>, uiBlocks + 1);
<a name="l00127"></a>00127 <span class="comment">/* We need to skip 2 first pages. */</span>
<a name="l00128"></a>00128 printf (<span class="stringliteral">"ss"</span>);
<a name="l00129"></a>00129 uiSkippedPages = 2;
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> page = 0x2; page <= 0xF; page++) {
<a name="l00132"></a>00132 <span class="keywordflow">if</span> ((page==0x2) && (!write_lock)) {
<a name="l00133"></a>00133 printf (<span class="stringliteral">"s"</span>);
<a name="l00134"></a>00134 uiSkippedPages++;
<a name="l00135"></a>00135 <span class="keywordflow">continue</span>;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 <span class="keywordflow">if</span> ((page==0x3) && (!write_otp)) {
<a name="l00138"></a>00138 printf (<span class="stringliteral">"s"</span>);
<a name="l00139"></a>00139 uiSkippedPages++;
<a name="l00140"></a>00140 <span class="keywordflow">continue</span>;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 <span class="comment">// Show if the readout went well</span>
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (bFailure) {
<a name="l00144"></a>00144 <span class="comment">// When a failure occured we need to redo the anti-collision</span>
<a name="l00145"></a>00145 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#acff0e43e51d7a2c8d750d09fa5265e16" title="Select a passive or emulated tag.">nfc_initiator_select_passive_target</a> (pnd, nmMifare, NULL, 0, &nt)) {
<a name="l00146"></a>00146 ERR (<span class="stringliteral">"tag was removed"</span>);
<a name="l00147"></a>00147 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 bFailure = <span class="keyword">false</span>;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 <span class="comment">// For the Mifare Ultralight, this write command can be used</span>
<a name="l00152"></a>00152 <span class="comment">// in compatibility mode, which only actually writes the first </span>
<a name="l00153"></a>00153 <span class="comment">// page (4 bytes). The Ultralight-specific Write command only</span>
<a name="l00154"></a>00154 <span class="comment">// writes one page at a time.</span>
<a name="l00155"></a>00155 uiBlock = page / 4;
<a name="l00156"></a>00156 memcpy (mp.mpd.abtData, mtDump.amb[uiBlock].mbd.abtData + ((page % 4) * 4), 16);
<a name="l00157"></a>00157 <span class="keywordflow">if</span> (!nfc_initiator_mifare_cmd (pnd, MC_WRITE, page, &mp))
<a name="l00158"></a>00158 bFailure = <span class="keyword">true</span>;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 print_success_or_failure (bFailure, &uiWritenPages);
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 printf (<span class="stringliteral">"|\n"</span>);
<a name="l00163"></a>00163 printf (<span class="stringliteral">"Done, %d of %d pages written (%d pages skipped).\n"</span>, uiWritenPages, uiBlocks + 1, uiSkippedPages);
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="keywordtype">int</span>
<a name="l00169"></a>00169 main (<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span> *argv[])
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="keywordtype">bool</span> bReadAction;
<a name="l00172"></a>00172 FILE *pfDump;
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordflow">if</span> (argc < 3) {
<a name="l00175"></a>00175 printf (<span class="stringliteral">"\n"</span>);
<a name="l00176"></a>00176 printf (<span class="stringliteral">"%s r|w <dump.mfd>\n"</span>, argv[0]);
<a name="l00177"></a>00177 printf (<span class="stringliteral">"\n"</span>);
<a name="l00178"></a>00178 printf (<span class="stringliteral">"r|w - Perform read from or write to card\n"</span>);
<a name="l00179"></a>00179 printf (<span class="stringliteral">"<dump.mfd> - MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)\n"</span>);
<a name="l00180"></a>00180 printf (<span class="stringliteral">"\n"</span>);
<a name="l00181"></a>00181 <span class="keywordflow">return</span> 1;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 DBG (<span class="stringliteral">"\nChecking arguments and settings\n"</span>);
<a name="l00185"></a>00185
<a name="l00186"></a>00186 bReadAction = tolower ((<span class="keywordtype">int</span>) ((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) *(argv[1])) == <span class="charliteral">'r'</span>);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="keywordflow">if</span> (bReadAction) {
<a name="l00189"></a>00189 memset (&mtDump, 0x00, <span class="keyword">sizeof</span> (mtDump));
<a name="l00190"></a>00190 } <span class="keywordflow">else</span> {
<a name="l00191"></a>00191 pfDump = fopen (argv[2], <span class="stringliteral">"rb"</span>);
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="keywordflow">if</span> (pfDump == NULL) {
<a name="l00194"></a>00194 ERR (<span class="stringliteral">"Could not open dump file: %s\n"</span>, argv[2]);
<a name="l00195"></a>00195 <span class="keywordflow">return</span> 1;
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (fread (&mtDump, 1, <span class="keyword">sizeof</span> (mtDump), pfDump) != <span class="keyword">sizeof</span> (mtDump)) {
<a name="l00199"></a>00199 ERR (<span class="stringliteral">"Could not read from dump file: %s\n"</span>, argv[2]);
<a name="l00200"></a>00200 fclose (pfDump);
<a name="l00201"></a>00201 <span class="keywordflow">return</span> 1;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 fclose (pfDump);
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 DBG (<span class="stringliteral">"Successfully opened the dump file\n"</span>);
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="comment">// Try to open the NFC device</span>
<a name="l00208"></a>00208 pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (NULL);
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (pnd == NULL) {
<a name="l00210"></a>00210 ERR (<span class="stringliteral">"Error connecting NFC device\n"</span>);
<a name="l00211"></a>00211 <span class="keywordflow">return</span> 1;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <a class="code" href="nfc_8c.html#a1c05aadcf1b30e8d69969dfd74a793f2" title="Initialize NFC device as initiator (reader)">nfc_initiator_init</a> (pnd);
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="comment">// Drop the field for a while</span>
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea932832c243c9448924de6e21aa622d07">NDO_ACTIVATE_FIELD</a>, <span class="keyword">false</span>)) {
<a name="l00218"></a>00218 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pnd, <span class="stringliteral">"nfc_configure"</span>);
<a name="l00219"></a>00219 exit (EXIT_FAILURE);
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 <span class="comment">// Let the device only try once to find a tag</span>
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ead179fd877ff1ba540f0425fa3547825d">NDO_INFINITE_SELECT</a>, <span class="keyword">false</span>)) {
<a name="l00223"></a>00223 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pnd, <span class="stringliteral">"nfc_configure"</span>);
<a name="l00224"></a>00224 exit (EXIT_FAILURE);
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea34588e4870fcc10476151e27e8e97a74">NDO_HANDLE_CRC</a>, <span class="keyword">true</span>)) {
<a name="l00227"></a>00227 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pnd, <span class="stringliteral">"nfc_configure"</span>);
<a name="l00228"></a>00228 exit (EXIT_FAILURE);
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea7c1f6097b2d2a1670f580de332c41596">NDO_HANDLE_PARITY</a>, <span class="keyword">true</span>)) {
<a name="l00231"></a>00231 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pnd, <span class="stringliteral">"nfc_configure"</span>);
<a name="l00232"></a>00232 exit (EXIT_FAILURE);
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 <span class="comment">// Enable field so more power consuming cards can power themselves up</span>
<a name="l00235"></a>00235 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea932832c243c9448924de6e21aa622d07">NDO_ACTIVATE_FIELD</a>, <span class="keyword">true</span>)) {
<a name="l00236"></a>00236 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pnd, <span class="stringliteral">"nfc_configure"</span>);
<a name="l00237"></a>00237 exit (EXIT_FAILURE);
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240 printf (<span class="stringliteral">"Connected to NFC device: %s\n"</span>, pnd-><a class="code" href="structnfc__device__t.html#a3933f0bea196fedca0345a7f940dc85b">acName</a>);
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="comment">// Try to find a MIFARE Ultralight tag</span>
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#acff0e43e51d7a2c8d750d09fa5265e16" title="Select a passive or emulated tag.">nfc_initiator_select_passive_target</a> (pnd, nmMifare, NULL, 0, &nt)) {
<a name="l00244"></a>00244 ERR (<span class="stringliteral">"no tag was found\n"</span>);
<a name="l00245"></a>00245 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pnd);
<a name="l00246"></a>00246 <span class="keywordflow">return</span> 1;
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248 <span class="comment">// Test if we are dealing with a MIFARE compatible tag</span>
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordflow">if</span> (nt.nti.nai.abtAtqa[1] != 0x44) {
<a name="l00251"></a>00251 ERR (<span class="stringliteral">"tag is not a MIFARE Ultralight card\n"</span>);
<a name="l00252"></a>00252 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pnd);
<a name="l00253"></a>00253 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00254"></a>00254 }
<a name="l00255"></a>00255 <span class="comment">// Get the info from the current tag</span>
<a name="l00256"></a>00256 printf (<span class="stringliteral">"Found MIFARE Ultralight card with UID: "</span>);
<a name="l00257"></a>00257 <span class="keywordtype">size_t</span> szPos;
<a name="l00258"></a>00258 <span class="keywordflow">for</span> (szPos = 0; szPos < nt.nti.nai.szUidLen; szPos++) {
<a name="l00259"></a>00259 printf (<span class="stringliteral">"%02x"</span>, nt.nti.nai.abtUid[szPos]);
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 printf(<span class="stringliteral">"\n"</span>);
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="keywordflow">if</span> (bReadAction) {
<a name="l00264"></a>00264 <span class="keywordflow">if</span> (read_card ()) {
<a name="l00265"></a>00265 printf (<span class="stringliteral">"Writing data to file: %s ... "</span>, argv[2]);
<a name="l00266"></a>00266 fflush (stdout);
<a name="l00267"></a>00267 pfDump = fopen (argv[2], <span class="stringliteral">"wb"</span>);
<a name="l00268"></a>00268 <span class="keywordflow">if</span> (pfDump == NULL) {
<a name="l00269"></a>00269 printf (<span class="stringliteral">"Could not open file: %s\n"</span>, argv[2]);
<a name="l00270"></a>00270 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272 <span class="keywordflow">if</span> (fwrite (&mtDump, 1, <span class="keyword">sizeof</span> (mtDump), pfDump) != <span class="keyword">sizeof</span> (mtDump)) {
<a name="l00273"></a>00273 printf (<span class="stringliteral">"Could not write to file: %s\n"</span>, argv[2]);
<a name="l00274"></a>00274 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 fclose (pfDump);
<a name="l00277"></a>00277 printf (<span class="stringliteral">"Done.\n"</span>);
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279 } <span class="keywordflow">else</span> {
<a name="l00280"></a>00280 write_card ();
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282
<a name="l00283"></a>00283 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pnd);
<a name="l00284"></a>00284
<a name="l00285"></a>00285 <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00286"></a>00286 }
</pre></div></div>
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