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<div class="title">snmpTCPIPv6Domain.c</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include <net-snmp/net-snmp-config.h></span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="preprocessor">#ifdef NETSNMP_TRANSPORT_TCPIPV6_DOMAIN</span>
<a name="l00004"></a>00004 <span class="preprocessor"></span>
<a name="l00005"></a>00005 <span class="comment">/*</span>
<a name="l00006"></a>00006 <span class="comment"> * hack-o-matic for Cygwin to use winsock2</span>
<a name="l00007"></a>00007 <span class="comment">*/</span>
<a name="l00008"></a>00008 <span class="preprocessor">#if defined(cygwin)</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_UNISTD_H</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_NETINET_IN_H</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_ARPA_INET_H</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_NET_IF_H</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_NETDB_H</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_SYS_PARAM_H</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_SYS_SELECT_H</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_SYS_SOCKET_H</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#undef HAVE_IN_ADDR_T</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <stdio.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <errno.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#if HAVE_STRING_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#include <string.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#else</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#include <strings.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#endif</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_STDLIB_H</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#endif</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_UNISTD_H</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#endif</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_SYS_SOCKET_H</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include <sys/socket.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="preprocessor">#if defined(HAVE_WINSOCK_H) || defined(cygwin)</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span> <span class="comment">/*</span>
<a name="l00041"></a>00041 <span class="comment"> * Windows IPv6 support is part of WinSock2 only</span>
<a name="l00042"></a>00042 <span class="comment"> */</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <winsock2.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <ws2tcpip.h></span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *inet_ntop(<span class="keywordtype">int</span>, <span class="keyword">const</span> <span class="keywordtype">void</span>*, <span class="keywordtype">char</span>*, <span class="keywordtype">size_t</span>);
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="preprocessor">#endif</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>
<a name="l00050"></a>00050 <span class="preprocessor">#if HAVE_NETINET_IN_H</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#include <netinet/in.h></span>
<a name="l00052"></a>00052 <span class="preprocessor">#endif</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_ARPA_INET_H</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#include <arpa/inet.h></span>
<a name="l00055"></a>00055 <span class="preprocessor">#endif</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_NETDB_H</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#include <netdb.h></span>
<a name="l00058"></a>00058 <span class="preprocessor">#endif</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_FCNTL_H</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span><span class="preprocessor">#include <fcntl.h></span>
<a name="l00061"></a>00061 <span class="preprocessor">#endif</span>
<a name="l00062"></a>00062 <span class="preprocessor"></span>
<a name="l00063"></a>00063 <span class="preprocessor">#if HAVE_DMALLOC_H</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span><span class="preprocessor">#include <dmalloc.h></span>
<a name="l00065"></a>00065 <span class="preprocessor">#endif</span>
<a name="l00066"></a>00066 <span class="preprocessor"></span>
<a name="l00067"></a>00067 <span class="preprocessor">#include <net-snmp/types.h></span>
<a name="l00068"></a>00068 <span class="preprocessor">#include <net-snmp/output_api.h></span>
<a name="l00069"></a>00069 <span class="preprocessor">#include <net-snmp/config_api.h></span>
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="preprocessor">#include <net-snmp/library/snmp_transport.h></span>
<a name="l00072"></a>00072 <span class="preprocessor">#include <net-snmp/library/snmpUDPDomain.h></span>
<a name="l00073"></a>00073 <span class="preprocessor">#include <net-snmp/library/snmpUDPIPv6Domain.h></span>
<a name="l00074"></a>00074 <span class="preprocessor">#include <net-snmp/library/snmpTCPIPv6Domain.h></span>
<a name="l00075"></a>00075
<a name="l00076"></a>00076 oid netsnmp_TCPIPv6Domain[] = { TRANSPORT_DOMAIN_TCP_IPV6 };
<a name="l00077"></a>00077 <span class="keyword">static</span> <a class="code" href="structnetsnmp__tdomain__s.html">netsnmp_tdomain</a> tcp6Domain;
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">/*</span>
<a name="l00080"></a>00080 <span class="comment"> * Return a string representing the address in data, or else the "far end"</span>
<a name="l00081"></a>00081 <span class="comment"> * address if data is NULL. </span>
<a name="l00082"></a>00082 <span class="comment"> */</span>
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">char</span> *
<a name="l00085"></a>00085 netsnmp_tcp6_fmtaddr(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t, <span class="keywordtype">void</span> *data, <span class="keywordtype">int</span> len)
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 <span class="keyword">struct </span>sockaddr_in6 *to = NULL;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"fmtaddr: t = %p, data = %p, len = %d\n"</span>, t,
<a name="l00090"></a>00090 data, len));
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (data != NULL && len == <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6)) {
<a name="l00092"></a>00092 to = (<span class="keyword">struct </span>sockaddr_in6 *) data;
<a name="l00093"></a>00093 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (t != NULL && t->data != NULL) {
<a name="l00094"></a>00094 to = (<span class="keyword">struct </span>sockaddr_in6 *) t->data;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (to == NULL) {
<a name="l00097"></a>00097 <span class="keywordflow">return</span> strdup(<span class="stringliteral">"TCP/IPv6: unknown"</span>);
<a name="l00098"></a>00098 } <span class="keywordflow">else</span> {
<a name="l00099"></a>00099 <span class="keywordtype">char</span> addr[INET6_ADDRSTRLEN];
<a name="l00100"></a>00100 <span class="keywordtype">char</span> tmp[INET6_ADDRSTRLEN + 8];
<a name="l00101"></a>00101
<a name="l00102"></a>00102 sprintf(tmp, <span class="stringliteral">"TCP/IPv6: [%s]:%hd"</span>,
<a name="l00103"></a>00103 inet_ntop(AF_INET6, (<span class="keywordtype">void</span> *) &(to->sin6_addr), addr,
<a name="l00104"></a>00104 INET6_ADDRSTRLEN), ntohs(to->sin6_port));
<a name="l00105"></a>00105 <span class="keywordflow">return</span> strdup(tmp);
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="comment">/*</span>
<a name="l00110"></a>00110 <span class="comment"> * You can write something into opaque that will subsequently get passed back </span>
<a name="l00111"></a>00111 <span class="comment"> * to your send function if you like. For instance, you might want to</span>
<a name="l00112"></a>00112 <span class="comment"> * remember where a PDU came from, so that you can send a reply there... </span>
<a name="l00113"></a>00113 <span class="comment"> */</span>
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00116"></a>00116 netsnmp_tcp6_recv(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t, <span class="keywordtype">void</span> *buf, <span class="keywordtype">int</span> size,
<a name="l00117"></a>00117 <span class="keywordtype">void</span> **opaque, <span class="keywordtype">int</span> *olength)
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 <span class="keywordtype">int</span> rc = -1;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="keywordflow">if</span> (t != NULL && t->sock >= 0) {
<a name="l00122"></a>00122 <span class="keywordflow">while</span> (rc < 0) {
<a name="l00123"></a>00123 rc = recv(t->sock, buf, size, 0);
<a name="l00124"></a>00124 <span class="keywordflow">if</span> (rc < 0 && errno != EINTR) {
<a name="l00125"></a>00125 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"recv fd %d err %d (\"%s\")\n"</span>,
<a name="l00126"></a>00126 t->sock, errno, strerror(errno)));
<a name="l00127"></a>00127 <span class="keywordflow">return</span> -1;
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"recv fd %d got %d bytes\n"</span>, t->sock, rc));
<a name="l00131"></a>00131 } <span class="keywordflow">else</span> {
<a name="l00132"></a>00132 <span class="keywordflow">return</span> -1;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (opaque != NULL && olength != NULL) {
<a name="l00136"></a>00136 <span class="keywordflow">if</span> (t->data_length > 0) {
<a name="l00137"></a>00137 <span class="keywordflow">if</span> ((*opaque = malloc(t->data_length)) != NULL) {
<a name="l00138"></a>00138 memcpy(*opaque, t->data, t->data_length);
<a name="l00139"></a>00139 *olength = t->data_length;
<a name="l00140"></a>00140 } <span class="keywordflow">else</span> {
<a name="l00141"></a>00141 *olength = 0;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143 } <span class="keywordflow">else</span> {
<a name="l00144"></a>00144 *opaque = NULL;
<a name="l00145"></a>00145 *olength = 0;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">return</span> rc;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00153"></a>00153 netsnmp_tcp6_send(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t, <span class="keywordtype">void</span> *buf, <span class="keywordtype">int</span> size,
<a name="l00154"></a>00154 <span class="keywordtype">void</span> **opaque, <span class="keywordtype">int</span> *olength)
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156 <span class="keywordtype">int</span> rc = -1;
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (t != NULL && t->sock >= 0) {
<a name="l00159"></a>00159 <span class="keywordflow">while</span> (rc < 0) {
<a name="l00160"></a>00160 rc = send(t->sock, buf, size, 0);
<a name="l00161"></a>00161 <span class="keywordflow">if</span> (rc < 0 && errno != EINTR) {
<a name="l00162"></a>00162 <span class="keywordflow">break</span>;
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 <span class="keywordflow">return</span> rc;
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00170"></a>00170 netsnmp_tcp6_close(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t)
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="keywordtype">int</span> rc = -1;
<a name="l00173"></a>00173 <span class="keywordflow">if</span> (t != NULL && t->sock >= 0) {
<a name="l00174"></a>00174 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"close fd %d\n"</span>, t->sock));
<a name="l00175"></a>00175 <span class="preprocessor">#ifndef HAVE_CLOSESOCKET</span>
<a name="l00176"></a>00176 <span class="preprocessor"></span> rc = close(t->sock);
<a name="l00177"></a>00177 <span class="preprocessor">#else</span>
<a name="l00178"></a>00178 <span class="preprocessor"></span> rc = closesocket(t->sock);
<a name="l00179"></a>00179 <span class="preprocessor">#endif</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span> t->sock = -1;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 <span class="keywordflow">return</span> rc;
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00186"></a>00186 netsnmp_tcp6_accept(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 <span class="keyword">struct </span>sockaddr_in6 *farend = NULL;
<a name="l00189"></a>00189 <span class="keywordtype">int</span> newsock = -1, sockflags = 0;
<a name="l00190"></a>00190 socklen_t farendlen = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>sockaddr_in6);
<a name="l00191"></a>00191 <span class="keywordtype">char</span> *str = NULL;
<a name="l00192"></a>00192
<a name="l00193"></a>00193 farend = (<span class="keyword">struct </span>sockaddr_in6 *) malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (farend == NULL) {
<a name="l00196"></a>00196 <span class="comment">/*</span>
<a name="l00197"></a>00197 <span class="comment"> * Indicate that the acceptance of this socket failed. </span>
<a name="l00198"></a>00198 <span class="comment"> */</span>
<a name="l00199"></a>00199 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"accept: malloc failed\n"</span>));
<a name="l00200"></a>00200 <span class="keywordflow">return</span> -1;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="keywordflow">if</span> (t != NULL && t->sock >= 0) {
<a name="l00204"></a>00204 newsock = accept(t->sock, (<span class="keyword">struct</span> sockaddr *) farend, &farendlen);
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (newsock < 0) {
<a name="l00207"></a>00207 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>,<span class="stringliteral">"accept failed rc %d errno %d \"%s\"\n"</span>,
<a name="l00208"></a>00208 newsock, errno, strerror(errno)));
<a name="l00209"></a>00209 free(farend);
<a name="l00210"></a>00210 <span class="keywordflow">return</span> newsock;
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="keywordflow">if</span> (t->data != NULL) {
<a name="l00214"></a>00214 free(t->data);
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216
<a name="l00217"></a>00217 t->data = farend;
<a name="l00218"></a>00218 t->data_length = farendlen;
<a name="l00219"></a>00219 str = netsnmp_tcp6_fmtaddr(NULL, farend, farendlen);
<a name="l00220"></a>00220 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"accept succeeded (from %s)\n"</span>, str));
<a name="l00221"></a>00221 free(str);
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="comment">/*</span>
<a name="l00224"></a>00224 <span class="comment"> * Try to make the new socket blocking. </span>
<a name="l00225"></a>00225 <span class="comment"> */</span>
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00228"></a>00228 <span class="preprocessor"></span> ioctlsocket(newsock, FIONBIO, &sockflags);
<a name="l00229"></a>00229 <span class="preprocessor">#else</span>
<a name="l00230"></a>00230 <span class="preprocessor"></span> <span class="keywordflow">if</span> ((sockflags = fcntl(newsock, F_GETFL, 0)) >= 0) {
<a name="l00231"></a>00231 fcntl(newsock, F_SETFL, (sockflags & ~O_NONBLOCK));
<a name="l00232"></a>00232 } <span class="keywordflow">else</span> {
<a name="l00233"></a>00233 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"accept: couldn't f_getfl of fd %d\n"</span>,
<a name="l00234"></a>00234 newsock));
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236 <span class="preprocessor">#endif</span>
<a name="l00237"></a>00237 <span class="preprocessor"></span>
<a name="l00238"></a>00238 <span class="comment">/*</span>
<a name="l00239"></a>00239 <span class="comment"> * Allow user to override the send and receive buffers. Default is</span>
<a name="l00240"></a>00240 <span class="comment"> * to use os default. Don't worry too much about errors --</span>
<a name="l00241"></a>00241 <span class="comment"> * just plough on regardless. </span>
<a name="l00242"></a>00242 <span class="comment"> */</span>
<a name="l00243"></a>00243 netsnmp_sock_buffer_set(newsock, SO_SNDBUF, 1, 0);
<a name="l00244"></a>00244 netsnmp_sock_buffer_set(newsock, SO_RCVBUF, 1, 0);
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="keywordflow">return</span> newsock;
<a name="l00247"></a>00247 } <span class="keywordflow">else</span> {
<a name="l00248"></a>00248 free(farend);
<a name="l00249"></a>00249 <span class="keywordflow">return</span> -1;
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 }
<a name="l00252"></a>00252
<a name="l00253"></a>00253
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="comment">/*</span>
<a name="l00256"></a>00256 <span class="comment"> * Open a TCP/IPv6-based transport for SNMP. Local is TRUE if addr is the</span>
<a name="l00257"></a>00257 <span class="comment"> * local address to bind to (i.e. this is a server-type session); otherwise</span>
<a name="l00258"></a>00258 <span class="comment"> * addr is the remote address to send things to. </span>
<a name="l00259"></a>00259 <span class="comment"> */</span>
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *
<a name="l00262"></a>00262 netsnmp_tcp6_transport(<span class="keyword">struct</span> sockaddr_in6 *addr, <span class="keywordtype">int</span> local)
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t = NULL;
<a name="l00265"></a>00265 <span class="keywordtype">int</span> rc = 0;
<a name="l00266"></a>00266 <span class="keywordtype">char</span> *str = NULL;
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="keywordflow">if</span> (addr == NULL || addr->sin6_family != AF_INET6) {
<a name="l00269"></a>00269 <span class="keywordflow">return</span> NULL;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00272"></a>00272 t = (<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *) malloc(<span class="keyword">sizeof</span>(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a>));
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (t == NULL) {
<a name="l00274"></a>00274 <span class="keywordflow">return</span> NULL;
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 memset(t, 0, <span class="keyword">sizeof</span>(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a>));
<a name="l00277"></a>00277
<a name="l00278"></a>00278 str = netsnmp_tcp6_fmtaddr(NULL, (<span class="keywordtype">void</span> *)addr,
<a name="l00279"></a>00279 <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00280"></a>00280 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"open %s %s\n"</span>, local ? <span class="stringliteral">"local"</span> : <span class="stringliteral">"remote"</span>,
<a name="l00281"></a>00281 str));
<a name="l00282"></a>00282 free(str);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 memset(t, 0, <span class="keyword">sizeof</span>(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a>));
<a name="l00285"></a>00285
<a name="l00286"></a>00286 t->data = malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00287"></a>00287 <span class="keywordflow">if</span> (t->data == NULL) {
<a name="l00288"></a>00288 netsnmp_transport_free(t);
<a name="l00289"></a>00289 <span class="keywordflow">return</span> NULL;
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291 t->data_length = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>sockaddr_in6);
<a name="l00292"></a>00292 memcpy(t->data, addr, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00293"></a>00293
<a name="l00294"></a>00294 t->domain = netsnmp_TCPIPv6Domain;
<a name="l00295"></a>00295 t->domain_length = <span class="keyword">sizeof</span>(netsnmp_TCPIPv6Domain) / <span class="keyword">sizeof</span>(oid);
<a name="l00296"></a>00296
<a name="l00297"></a>00297 t->sock = socket(PF_INET6, SOCK_STREAM, 0);
<a name="l00298"></a>00298 <span class="keywordflow">if</span> (t->sock < 0) {
<a name="l00299"></a>00299 netsnmp_transport_free(t);
<a name="l00300"></a>00300 <span class="keywordflow">return</span> NULL;
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302
<a name="l00303"></a>00303 t->flags = NETSNMP_TRANSPORT_FLAG_STREAM;
<a name="l00304"></a>00304
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (local) {
<a name="l00306"></a>00306 <span class="keywordtype">int</span> sockflags = 0, opt = 1;
<a name="l00307"></a>00307
<a name="l00308"></a>00308 <span class="comment">/*</span>
<a name="l00309"></a>00309 <span class="comment"> * This session is inteneded as a server, so we must bind on to the</span>
<a name="l00310"></a>00310 <span class="comment"> * given IP address, which may include an interface address, or could</span>
<a name="l00311"></a>00311 <span class="comment"> * be INADDR_ANY, but certainly includes a port number.</span>
<a name="l00312"></a>00312 <span class="comment"> */</span>
<a name="l00313"></a>00313
<a name="l00314"></a>00314 <span class="preprocessor">#ifdef IPV6_V6ONLY</span>
<a name="l00315"></a>00315 <span class="preprocessor"></span> <span class="comment">/* Try to restrict PF_INET6 socket to IPv6 communications only. */</span>
<a name="l00316"></a>00316 {
<a name="l00317"></a>00317 <span class="keywordtype">int</span> one=1;
<a name="l00318"></a>00318 <span class="keywordflow">if</span> (setsockopt(t->sock, IPPROTO_IPV6, IPV6_V6ONLY, (<span class="keywordtype">char</span> *)&one, <span class="keyword">sizeof</span>(one)) != 0) {
<a name="l00319"></a>00319 DEBUGMSGTL((<span class="stringliteral">"netsnmp_udp6"</span>, <span class="stringliteral">"couldn't set IPV6_V6ONLY to %d bytes: %s\n"</span>, one, strerror(errno)));
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322 <span class="preprocessor">#endif</span>
<a name="l00323"></a>00323 <span class="preprocessor"></span>
<a name="l00324"></a>00324 t->flags |= NETSNMP_TRANSPORT_FLAG_LISTEN;
<a name="l00325"></a>00325 t->local = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)malloc(18);
<a name="l00326"></a>00326 <span class="keywordflow">if</span> (t->local == NULL) {
<a name="l00327"></a>00327 netsnmp_tcp6_close(t);
<a name="l00328"></a>00328 netsnmp_transport_free(t);
<a name="l00329"></a>00329 <span class="keywordflow">return</span> NULL;
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331 memcpy(t->local, addr->sin6_addr.s6_addr, 16);
<a name="l00332"></a>00332 t->local[16] = (addr->sin6_port & 0xff00) >> 8;
<a name="l00333"></a>00333 t->local[17] = (addr->sin6_port & 0x00ff) >> 0;
<a name="l00334"></a>00334 t->local_length = 18;
<a name="l00335"></a>00335
<a name="l00336"></a>00336 <span class="comment">/*</span>
<a name="l00337"></a>00337 <span class="comment"> * We should set SO_REUSEADDR too. </span>
<a name="l00338"></a>00338 <span class="comment"> */</span>
<a name="l00339"></a>00339
<a name="l00340"></a>00340 setsockopt(t->sock, SOL_SOCKET, SO_REUSEADDR, (<span class="keywordtype">void</span> *)&opt, <span class="keyword">sizeof</span>(opt));
<a name="l00341"></a>00341
<a name="l00342"></a>00342 rc = bind(t->sock, (<span class="keyword">struct</span> sockaddr *) addr,
<a name="l00343"></a>00343 <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00344"></a>00344 <span class="keywordflow">if</span> (rc != 0) {
<a name="l00345"></a>00345 netsnmp_tcp6_close(t);
<a name="l00346"></a>00346 netsnmp_transport_free(t);
<a name="l00347"></a>00347 <span class="keywordflow">return</span> NULL;
<a name="l00348"></a>00348 }
<a name="l00349"></a>00349
<a name="l00350"></a>00350 <span class="comment">/*</span>
<a name="l00351"></a>00351 <span class="comment"> * Since we are going to be letting select() tell us when connections</span>
<a name="l00352"></a>00352 <span class="comment"> * are ready to be accept()ed, we need to make the socket n0n-blocking</span>
<a name="l00353"></a>00353 <span class="comment"> * to avoid the race condition described in W. R. Stevens, ``Unix</span>
<a name="l00354"></a>00354 <span class="comment"> * Network Programming Volume I Second Edition'', pp. 422--4, which</span>
<a name="l00355"></a>00355 <span class="comment"> * could otherwise wedge the agent.</span>
<a name="l00356"></a>00356 <span class="comment"> */</span>
<a name="l00357"></a>00357
<a name="l00358"></a>00358 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00359"></a>00359 <span class="preprocessor"></span> opt = 1;
<a name="l00360"></a>00360 ioctlsocket(t->sock, FIONBIO, &opt);
<a name="l00361"></a>00361 <span class="preprocessor">#else</span>
<a name="l00362"></a>00362 <span class="preprocessor"></span> sockflags = fcntl(t->sock, F_GETFL, 0);
<a name="l00363"></a>00363 fcntl(t->sock, F_SETFL, sockflags | O_NONBLOCK);
<a name="l00364"></a>00364 <span class="preprocessor">#endif</span>
<a name="l00365"></a>00365 <span class="preprocessor"></span>
<a name="l00366"></a>00366 <span class="comment">/*</span>
<a name="l00367"></a>00367 <span class="comment"> * Now sit here and wait for connections to arrive. </span>
<a name="l00368"></a>00368 <span class="comment"> */</span>
<a name="l00369"></a>00369
<a name="l00370"></a>00370 rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN);
<a name="l00371"></a>00371 <span class="keywordflow">if</span> (rc != 0) {
<a name="l00372"></a>00372 netsnmp_tcp6_close(t);
<a name="l00373"></a>00373 netsnmp_transport_free(t);
<a name="l00374"></a>00374 <span class="keywordflow">return</span> NULL;
<a name="l00375"></a>00375 }
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="comment">/*</span>
<a name="l00378"></a>00378 <span class="comment"> * no buffer size on listen socket - doesn't make sense</span>
<a name="l00379"></a>00379 <span class="comment"> */</span>
<a name="l00380"></a>00380
<a name="l00381"></a>00381 } <span class="keywordflow">else</span> {
<a name="l00382"></a>00382 t->remote = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)malloc(18);
<a name="l00383"></a>00383 <span class="keywordflow">if</span> (t->remote == NULL) {
<a name="l00384"></a>00384 netsnmp_tcp6_close(t);
<a name="l00385"></a>00385 netsnmp_transport_free(t);
<a name="l00386"></a>00386 <span class="keywordflow">return</span> NULL;
<a name="l00387"></a>00387 }
<a name="l00388"></a>00388 memcpy(t->remote, addr->sin6_addr.s6_addr, 16);
<a name="l00389"></a>00389 t->remote[16] = (addr->sin6_port & 0xff00) >> 8;
<a name="l00390"></a>00390 t->remote[17] = (addr->sin6_port & 0x00ff) >> 0;
<a name="l00391"></a>00391 t->remote_length = 18;
<a name="l00392"></a>00392
<a name="l00393"></a>00393 <span class="comment">/*</span>
<a name="l00394"></a>00394 <span class="comment"> * This is a client-type session, so attempt to connect to the far</span>
<a name="l00395"></a>00395 <span class="comment"> * end. We don't go non-blocking here because it's not obvious what</span>
<a name="l00396"></a>00396 <span class="comment"> * you'd then do if you tried to do snmp_sends before the connection</span>
<a name="l00397"></a>00397 <span class="comment"> * had completed. So this can block.</span>
<a name="l00398"></a>00398 <span class="comment"> */</span>
<a name="l00399"></a>00399
<a name="l00400"></a>00400 rc = connect(t->sock, (<span class="keyword">struct</span> sockaddr *) addr,
<a name="l00401"></a>00401 <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00402"></a>00402
<a name="l00403"></a>00403 DEBUGMSGTL((<span class="stringliteral">"netsnmp_tcp6"</span>, <span class="stringliteral">"connect returns %d\n"</span>, rc));
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="keywordflow">if</span> (rc < 0) {
<a name="l00406"></a>00406 netsnmp_tcp6_close(t);
<a name="l00407"></a>00407 netsnmp_transport_free(t);
<a name="l00408"></a>00408 <span class="keywordflow">return</span> NULL;
<a name="l00409"></a>00409 }
<a name="l00410"></a>00410
<a name="l00411"></a>00411 <span class="comment">/*</span>
<a name="l00412"></a>00412 <span class="comment"> * Allow user to override the send and receive buffers. Default is</span>
<a name="l00413"></a>00413 <span class="comment"> * to use os default. Don't worry too much about errors --</span>
<a name="l00414"></a>00414 <span class="comment"> * just plough on regardless. </span>
<a name="l00415"></a>00415 <span class="comment"> */</span>
<a name="l00416"></a>00416 netsnmp_sock_buffer_set(t->sock, SO_SNDBUF, local, 0);
<a name="l00417"></a>00417 netsnmp_sock_buffer_set(t->sock, SO_RCVBUF, local, 0);
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419
<a name="l00420"></a>00420 <span class="comment">/*</span>
<a name="l00421"></a>00421 <span class="comment"> * Message size is not limited by this transport (hence msgMaxSize</span>
<a name="l00422"></a>00422 <span class="comment"> * is equal to the maximum legal size of an SNMP message). </span>
<a name="l00423"></a>00423 <span class="comment"> */</span>
<a name="l00424"></a>00424
<a name="l00425"></a>00425 t->msgMaxSize = 0x7fffffff;
<a name="l00426"></a>00426 t->f_recv = netsnmp_tcp6_recv;
<a name="l00427"></a>00427 t->f_send = netsnmp_tcp6_send;
<a name="l00428"></a>00428 t->f_close = netsnmp_tcp6_close;
<a name="l00429"></a>00429 t->f_accept = netsnmp_tcp6_accept;
<a name="l00430"></a>00430 t->f_fmtaddr = netsnmp_tcp6_fmtaddr;
<a name="l00431"></a>00431
<a name="l00432"></a>00432 <span class="keywordflow">return</span> t;
<a name="l00433"></a>00433 }
<a name="l00434"></a>00434
<a name="l00435"></a>00435 <span class="comment">/*</span>
<a name="l00436"></a>00436 <span class="comment"> * Not extern but still defined in snmpUDPIPv6Domain.c</span>
<a name="l00437"></a>00437 <span class="comment"> */</span>
<a name="l00438"></a>00438 <span class="keyword">extern</span> <span class="keywordtype">int</span>
<a name="l00439"></a>00439 netsnmp_sockaddr_in6_2(<span class="keyword">struct</span> sockaddr_in6*, <span class="keyword">const</span> <span class="keywordtype">char</span>*, <span class="keyword">const</span> <span class="keywordtype">char</span>*);
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *
<a name="l00442"></a>00442 netsnmp_tcp6_create_tstring(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, <span class="keywordtype">int</span> local,
<a name="l00443"></a>00443 <span class="keyword">const</span> <span class="keywordtype">char</span> *default_target)
<a name="l00444"></a>00444 {
<a name="l00445"></a>00445 <span class="keyword">struct </span>sockaddr_in6 addr;
<a name="l00446"></a>00446
<a name="l00447"></a>00447 <span class="keywordflow">if</span> (netsnmp_sockaddr_in6_2(&addr, str, default_target)) {
<a name="l00448"></a>00448 <span class="keywordflow">return</span> netsnmp_tcp6_transport(&addr, local);
<a name="l00449"></a>00449 } <span class="keywordflow">else</span> {
<a name="l00450"></a>00450 <span class="keywordflow">return</span> NULL;
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452 }
<a name="l00453"></a>00453
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <span class="comment">/*</span>
<a name="l00456"></a>00456 <span class="comment"> * See:</span>
<a name="l00457"></a>00457 <span class="comment"> * </span>
<a name="l00458"></a>00458 <span class="comment"> * http://www.ietf.org/internet-drafts/draft-ietf-ops-taddress-mib-01.txt</span>
<a name="l00459"></a>00459 <span class="comment"> * </span>
<a name="l00460"></a>00460 <span class="comment"> * (or newer equivalent) for details of the TC which we are using for</span>
<a name="l00461"></a>00461 <span class="comment"> * the mapping here. </span>
<a name="l00462"></a>00462 <span class="comment"> */</span>
<a name="l00463"></a>00463
<a name="l00464"></a>00464 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *
<a name="l00465"></a>00465 netsnmp_tcp6_create_ostring(<span class="keyword">const</span> u_char * o, <span class="keywordtype">size_t</span> o_len, <span class="keywordtype">int</span> local)
<a name="l00466"></a>00466 {
<a name="l00467"></a>00467 <span class="keyword">struct </span>sockaddr_in6 addr;
<a name="l00468"></a>00468
<a name="l00469"></a>00469 <span class="keywordflow">if</span> (o_len == 18) {
<a name="l00470"></a>00470 memset((u_char *) & addr, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sockaddr_in6));
<a name="l00471"></a>00471 addr.sin6_family = AF_INET6;
<a name="l00472"></a>00472 memcpy((u_char *) & (addr.sin6_addr.s6_addr), o, 16);
<a name="l00473"></a>00473 addr.sin6_port = (o[16] << 8) + o[17];
<a name="l00474"></a>00474 <span class="keywordflow">return</span> netsnmp_tcp6_transport(&addr, local);
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476 <span class="keywordflow">return</span> NULL;
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478
<a name="l00479"></a>00479
<a name="l00480"></a>00480 <span class="keywordtype">void</span>
<a name="l00481"></a>00481 netsnmp_tcp6_ctor(<span class="keywordtype">void</span>)
<a name="l00482"></a>00482 {
<a name="l00483"></a>00483 tcp6Domain.name = netsnmp_TCPIPv6Domain;
<a name="l00484"></a>00484 tcp6Domain.name_length = <span class="keyword">sizeof</span>(netsnmp_TCPIPv6Domain) / <span class="keyword">sizeof</span>(oid);
<a name="l00485"></a>00485 tcp6Domain.f_create_from_tstring_new = netsnmp_tcp6_create_tstring;
<a name="l00486"></a>00486 tcp6Domain.f_create_from_ostring = netsnmp_tcp6_create_ostring;
<a name="l00487"></a>00487 tcp6Domain.prefix = (<span class="keyword">const</span> <span class="keywordtype">char</span>**)calloc(4, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span> *));
<a name="l00488"></a>00488 tcp6Domain.prefix[0] = <span class="stringliteral">"tcp6"</span>;
<a name="l00489"></a>00489 tcp6Domain.prefix[1] = <span class="stringliteral">"tcpv6"</span>;
<a name="l00490"></a>00490 tcp6Domain.prefix[2] = <span class="stringliteral">"tcpipv6"</span>;
<a name="l00491"></a>00491
<a name="l00492"></a>00492 netsnmp_tdomain_register(&tcp6Domain);
<a name="l00493"></a>00493 }
<a name="l00494"></a>00494
<a name="l00495"></a>00495 <span class="preprocessor">#endif </span><span class="comment">/* NETSNMP_TRANSPORT_TCPIPV6_DOMAIN */</span>
<a name="l00496"></a>00496
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