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<li class="navelem"><a class="el" href="dir_7a4553ee0c3b13d0e595a5d1659110a6.html">src</a> </li>
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<div class="title">winscard_msg_srv.c</div> </div>
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<a href="winscard__msg__srv_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) 2001-2004</span>
<a name="l00005"></a>00005 <span class="comment"> * David Corcoran <corcoran@linuxnet.com></span>
<a name="l00006"></a>00006 <span class="comment"> * Copyright (C) 2003-2004</span>
<a name="l00007"></a>00007 <span class="comment"> * Damien Sauveron <damien.sauveron@labri.fr></span>
<a name="l00008"></a>00008 <span class="comment"> * Copyright (C) 2002-2010</span>
<a name="l00009"></a>00009 <span class="comment"> * Ludovic Rousseau <ludovic.rousseau@free.fr></span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * $Id: winscard_msg_srv.c 5391 2010-11-08 14:53:02Z rousseau $</span>
<a name="l00012"></a>00012 <span class="comment"> */</span>
<a name="l00013"></a>00013
<a name="l00023"></a>00023 <span class="preprocessor">#include "config.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <fcntl.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <unistd.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <sys/stat.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <sys/socket.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <sys/time.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <sys/un.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <sys/ioctl.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <errno.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <stdio.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <time.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <string.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#ifdef HAVE_SYS_FILIO_H</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#include <sys/filio.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#endif</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include "misc.h"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include "<a class="code" href="pcscd_8h.html" title="This keeps a list of defines for pcsc-lite.">pcscd.h</a>"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "<a class="code" href="winscard_8h.html" title="This handles smartcard reader communications.">winscard.h</a>"</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include "<a class="code" href="debuglog_8h.html" title="This handles debugging.">debuglog.h</a>"</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include "<a class="code" href="winscard__msg_8h.html" title="This defines some structures and #defines to be used over the transport layer.">winscard_msg.h</a>"</span>
<a name="l00045"></a>00045
<a name="l00049"></a><a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c">00049</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a> = 0;
<a name="l00050"></a>00050 <span class="keyword">extern</span> <span class="keywordtype">char</span> AraKiri;
<a name="l00051"></a>00051
<a name="l00063"></a><a class="code" href="winscard__msg__srv_8c.html#a7c421010b7e933a8ed46927e5b9316e8">00063</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="winscard__msg__srv_8c.html#a7c421010b7e933a8ed46927e5b9316e8" title="Accepts a Client connection.">ProcessCommonChannelRequest</a>(<span class="comment">/*@out@*/</span> uint32_t *pdwClientID)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 socklen_t clnt_len;
<a name="l00066"></a>00066 <span class="keywordtype">int</span> new_sock;
<a name="l00067"></a>00067 <span class="keyword">struct </span>sockaddr_un clnt_addr;
<a name="l00068"></a>00068
<a name="l00069"></a>00069 clnt_len = <span class="keyword">sizeof</span>(clnt_addr);
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordflow">if</span> ((new_sock = accept(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a>, (<span class="keyword">struct</span> sockaddr *) &clnt_addr,
<a name="l00072"></a>00072 &clnt_len)) < 0)
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Accept on common socket: %s"</span>,
<a name="l00075"></a>00075 strerror(errno));
<a name="l00076"></a>00076 <span class="keywordflow">return</span> -1;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 *pdwClientID = new_sock;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">return</span> 0;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00098"></a><a class="code" href="winscard__msg__srv_8c.html#a061a490f5d2103751eb6b64573b5fb9d">00098</a> INTERNAL int32_t <a class="code" href="winscard__msg__srv_8c.html#a061a490f5d2103751eb6b64573b5fb9d" title="Prepares the communication channel used by the server to talk to the clients.">InitializeSocket</a>(<span class="keywordtype">void</span>)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 <span class="keyword">struct </span>sockaddr_un serv_adr;
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">/*</span>
<a name="l00103"></a>00103 <span class="comment"> * Create the common shared connection socket</span>
<a name="l00104"></a>00104 <span class="comment"> */</span>
<a name="l00105"></a>00105 <span class="keywordflow">if</span> ((<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a> = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Unable to create common socket: %s"</span>,
<a name="l00108"></a>00108 strerror(errno));
<a name="l00109"></a>00109 <span class="keywordflow">return</span> -1;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 serv_adr.sun_family = AF_UNIX;
<a name="l00113"></a>00113 strncpy(serv_adr.sun_path, PCSCLITE_CSOCK_NAME,
<a name="l00114"></a>00114 <span class="keyword">sizeof</span>(serv_adr.sun_path));
<a name="l00115"></a>00115 (void)<span class="keyword">remove</span>(PCSCLITE_CSOCK_NAME);
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (bind(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a>, (<span class="keyword">struct</span> sockaddr *) &serv_adr,
<a name="l00118"></a>00118 <span class="keyword">sizeof</span>(serv_adr.sun_family) + strlen(serv_adr.sun_path) + 1) < 0)
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Unable to bind common socket: %s"</span>,
<a name="l00121"></a>00121 strerror(errno));
<a name="l00122"></a>00122 <span class="keywordflow">return</span> -1;
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (listen(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a>, 1) < 0)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Unable to listen common socket: %s"</span>,
<a name="l00128"></a>00128 strerror(errno));
<a name="l00129"></a>00129 <span class="keywordflow">return</span> -1;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">/*</span>
<a name="l00133"></a>00133 <span class="comment"> * Chmod the public entry channel</span>
<a name="l00134"></a>00134 <span class="comment"> */</span>
<a name="l00135"></a>00135 (void)chmod(PCSCLITE_CSOCK_NAME, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">return</span> 0;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00153"></a>00153 <span class="preprocessor">#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)</span>
<a name="l00154"></a>00154 <span class="preprocessor"></span><span class="preprocessor">#define DO_TIMEOUT</span>
<a name="l00155"></a>00155 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00156"></a><a class="code" href="winscard__msg__srv_8c.html#a187cf841551d3e7b97e23d73067ec2d3">00156</a> <span class="preprocessor"></span>INTERNAL int32_t <a class="code" href="winscard__msg__srv_8c.html#a187cf841551d3e7b97e23d73067ec2d3" title="Looks for messages sent by clients.">ProcessEventsServer</a>(uint32_t *pdwClientID)
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158 fd_set read_fd;
<a name="l00159"></a>00159 <span class="keywordtype">int</span> selret;
<a name="l00160"></a>00160 <span class="preprocessor">#ifdef DO_TIMEOUT</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span> <span class="keyword">struct </span>timeval tv;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 tv.tv_sec = 1;
<a name="l00164"></a>00164 tv.tv_usec = 0;
<a name="l00165"></a>00165 <span class="preprocessor">#endif</span>
<a name="l00166"></a>00166 <span class="preprocessor"></span>
<a name="l00167"></a>00167 FD_ZERO(&read_fd);
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">/*</span>
<a name="l00170"></a>00170 <span class="comment"> * Set up the bit masks for select</span>
<a name="l00171"></a>00171 <span class="comment"> */</span>
<a name="l00172"></a>00172 FD_SET(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a>, &read_fd);
<a name="l00173"></a>00173
<a name="l00174"></a>00174 selret = select(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a> + 1, &read_fd, (fd_set *) NULL,
<a name="l00175"></a>00175 (fd_set *) NULL,
<a name="l00176"></a>00176 #ifdef DO_TIMEOUT
<a name="l00177"></a>00177 &tv
<a name="l00178"></a>00178 #<span class="keywordflow">else</span>
<a name="l00179"></a>00179 NULL
<a name="l00180"></a>00180 #endif
<a name="l00181"></a>00181 );
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (selret < 0)
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="keywordflow">if</span> (EINTR == errno)
<a name="l00186"></a>00186 <span class="keywordflow">return</span> -2;
<a name="l00187"></a>00187
<a name="l00188"></a>00188 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Select returns with failure: %s"</span>,
<a name="l00189"></a>00189 strerror(errno));
<a name="l00190"></a>00190 <span class="keywordflow">return</span> -1;
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="keywordflow">if</span> (selret == 0)
<a name="l00194"></a>00194 <span class="comment">/* timeout. On *BSD only */</span>
<a name="l00195"></a>00195 <span class="keywordflow">return</span> 2;
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="comment">/*</span>
<a name="l00198"></a>00198 <span class="comment"> * A common pipe packet has arrived - it could be a new application</span>
<a name="l00199"></a>00199 <span class="comment"> */</span>
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (FD_ISSET(<a class="code" href="winscard__msg__srv_8c.html#a840eb2cc63fe5b38ec8edb835bc7c40c" title="Socket to a file, used for clients-server comminication.">commonSocket</a>, &read_fd))
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 Log1(PCSC_LOG_DEBUG, <span class="stringliteral">"Common channel packet arrival"</span>);
<a name="l00203"></a>00203 <span class="keywordflow">if</span> (<a class="code" href="winscard__msg__srv_8c.html#a7c421010b7e933a8ed46927e5b9316e8" title="Accepts a Client connection.">ProcessCommonChannelRequest</a>(pdwClientID) == -1)
<a name="l00204"></a>00204 {
<a name="l00205"></a>00205 Log2(PCSC_LOG_ERROR,
<a name="l00206"></a>00206 <span class="stringliteral">"error in ProcessCommonChannelRequest: %d"</span>, *pdwClientID);
<a name="l00207"></a>00207 <span class="keywordflow">return</span> -1;
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210 <span class="keywordflow">else</span>
<a name="l00211"></a>00211 <span class="keywordflow">return</span> -1;
<a name="l00212"></a>00212
<a name="l00213"></a>00213 Log2(PCSC_LOG_DEBUG,
<a name="l00214"></a>00214 <span class="stringliteral">"ProcessCommonChannelRequest detects: %d"</span>, *pdwClientID);
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="keywordflow">return</span> 0;
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
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