| Current File : //usr/share/doc/net-snmp/html/snmpCallbackDomain_8c_source.html |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>net-snmp: snmpCallbackDomain.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">net-snmp
 <span id="projectnumber">5.4.1</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Generated by Doxygen 1.7.6.1 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">snmpCallbackDomain.c</div> </div>
</div><!--header-->
<div class="contents">
<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">#include <stdio.h></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00005"></a>00005 <span class="preprocessor">#include <ctype.h></span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <errno.h></span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span><span class="preprocessor">#include <net-snmp/library/winpipe.h></span>
<a name="l00010"></a>00010 <span class="preprocessor">#endif</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_STRING_H</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#include <string.h></span>
<a name="l00013"></a>00013 <span class="preprocessor">#else</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#include <strings.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#endif</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_STDLIB_H</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#endif</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_UNISTD_H</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#endif</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_SYS_SOCKET_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#include <sys/socket.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#endif</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_SYS_UN_H</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#include <sys/un.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#endif</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_IO_H</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#include <io.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#endif</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_FCNTL_H</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#include <fcntl.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#endif</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#if HAVE_DMALLOC_H</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include <dmalloc.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">#include <net-snmp/types.h></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <net-snmp/output_api.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <net-snmp/config_api.h></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <net-snmp/utilities.h></span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="preprocessor">#include <net-snmp/library/snmp_transport.h></span>
<a name="l00045"></a>00045 <span class="preprocessor">#include <net-snmp/library/snmpUnixDomain.h></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include <net-snmp/library/snmp_api.h></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <net-snmp/library/snmp_client.h></span>
<a name="l00048"></a>00048 <span class="preprocessor">#include <net-snmp/library/snmpCallbackDomain.h></span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="preprocessor">#ifndef NETSNMP_STREAM_QUEUE_LEN</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#define NETSNMP_STREAM_QUEUE_LEN 5</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span>
<a name="l00054"></a>00054 <span class="preprocessor">#ifdef NETSNMP_TRANSPORT_CALLBACK_DOMAIN</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span>
<a name="l00056"></a>00056 <span class="keyword">static</span> <a class="code" href="structnetsnmp__transport__list__s.html">netsnmp_transport_list</a> *trlist = NULL;
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keyword">static</span> <span class="keywordtype">int</span> callback_count = 0;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">typedef</span> <span class="keyword">struct </span>callback_hack_s {
<a name="l00061"></a>00061 <span class="keywordtype">void</span> *orig_transport_data;
<a name="l00062"></a>00062 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu;
<a name="l00063"></a>00063 } callback_hack;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">typedef</span> <span class="keyword">struct </span>callback_queue_s {
<a name="l00066"></a>00066 <span class="keywordtype">int</span> callback_num;
<a name="l00067"></a>00067 netsnmp_callback_pass *item;
<a name="l00068"></a>00068 <span class="keyword">struct </span>callback_queue_s *next, *prev;
<a name="l00069"></a>00069 } callback_queue;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 callback_queue *thequeue;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">static</span> <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *
<a name="l00074"></a>00074 find_transport_from_callback_num(<span class="keywordtype">int</span> num)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <span class="keyword">static</span> <a class="code" href="structnetsnmp__transport__list__s.html">netsnmp_transport_list</a> *ptr;
<a name="l00077"></a>00077 <span class="keywordflow">for</span> (ptr = trlist; ptr; ptr = ptr->next)
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (((netsnmp_callback_info *) ptr->transport->data)->
<a name="l00079"></a>00079 callback_num == num)
<a name="l00080"></a>00080 <span class="keywordflow">return</span> ptr->transport;
<a name="l00081"></a>00081 <span class="keywordflow">return</span> NULL;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00085"></a>00085 callback_debug_pdu(<span class="keyword">const</span> <span class="keywordtype">char</span> *ourstring, <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu)
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 <a class="code" href="structvariable__list.html" title="The netsnmp variable list binding structure, it's typedef'd to netsnmp_variable_list.">netsnmp_variable_list</a> *vb;
<a name="l00088"></a>00088 <span class="keywordtype">int</span> i = 1;
<a name="l00089"></a>00089 DEBUGMSGTL((ourstring,
<a name="l00090"></a>00090 <span class="stringliteral">"PDU: command = %d, errstat = %d, errindex = %d\n"</span>,
<a name="l00091"></a>00091 pdu-><a class="code" href="structsnmp__pdu.html#a4b4dfa4964546623586c027cf1d68ca6" title="Type of this PDU.">command</a>, pdu-><a class="code" href="structsnmp__pdu.html#a44ff060871736e6fda87c27357f9dbc5" title="Error status (non_repeaters in GetBulk)">errstat</a>, pdu-><a class="code" href="structsnmp__pdu.html#ab3a133b2a800a8d56aa96fc3b67638d0" title="Error index (max_repetitions in GetBulk)">errindex</a>));
<a name="l00092"></a>00092 <span class="keywordflow">for</span> (vb = pdu->variables; vb; vb = vb-><a class="code" href="structvariable__list.html#a036af3c8c73da042622a58afa452d76e" title="NULL for last variable.">next_variable</a>) {
<a name="l00093"></a>00093 DEBUGMSGTL((ourstring, <span class="stringliteral">" var %d:"</span>, i++));
<a name="l00094"></a>00094 DEBUGMSGVAR((ourstring, vb));
<a name="l00095"></a>00095 DEBUGMSG((ourstring, <span class="stringliteral">"\n"</span>));
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keywordtype">void</span>
<a name="l00100"></a>00100 callback_push_queue(<span class="keywordtype">int</span> num, netsnmp_callback_pass *item)
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102 callback_queue *newitem = <a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424" title="Mallocs memory of sizeof(t), zeros it and returns a pointer to it.">SNMP_MALLOC_TYPEDEF</a>(callback_queue);
<a name="l00103"></a>00103 callback_queue *ptr;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 newitem->callback_num = num;
<a name="l00106"></a>00106 newitem->item = item;
<a name="l00107"></a>00107 <span class="keywordflow">if</span> (thequeue) {
<a name="l00108"></a>00108 <span class="keywordflow">for</span> (ptr = thequeue; ptr && ptr->next; ptr = ptr->next) {
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 ptr->next = newitem;
<a name="l00111"></a>00111 newitem->prev = ptr;
<a name="l00112"></a>00112 } <span class="keywordflow">else</span> {
<a name="l00113"></a>00113 thequeue = newitem;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 DEBUGIF(<span class="stringliteral">"dump_send_callback_transport"</span>) {
<a name="l00116"></a>00116 callback_debug_pdu(<span class="stringliteral">"dump_send_callback_transport"</span>, item->pdu);
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120 netsnmp_callback_pass *
<a name="l00121"></a>00121 callback_pop_queue(<span class="keywordtype">int</span> num)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 netsnmp_callback_pass *cp;
<a name="l00124"></a>00124 callback_queue *ptr;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keywordflow">for</span> (ptr = thequeue; ptr; ptr = ptr->next) {
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (ptr->callback_num == num) {
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (ptr->prev) {
<a name="l00129"></a>00129 ptr->prev->next = ptr->next;
<a name="l00130"></a>00130 } <span class="keywordflow">else</span> {
<a name="l00131"></a>00131 thequeue = ptr->next;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 <span class="keywordflow">if</span> (ptr->next) {
<a name="l00134"></a>00134 ptr->next->prev = ptr->prev;
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 cp = ptr->item;
<a name="l00137"></a>00137 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(ptr);
<a name="l00138"></a>00138 DEBUGIF(<span class="stringliteral">"dump_recv_callback_transport"</span>) {
<a name="l00139"></a>00139 callback_debug_pdu(<span class="stringliteral">"dump_recv_callback_transport"</span>,
<a name="l00140"></a>00140 cp->pdu);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 <span class="keywordflow">return</span> cp;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 <span class="keywordflow">return</span> NULL;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="comment">/*</span>
<a name="l00149"></a>00149 <span class="comment"> * Return a string representing the address in data, or else the "far end"</span>
<a name="l00150"></a>00150 <span class="comment"> * address if data is NULL. </span>
<a name="l00151"></a>00151 <span class="comment"> */</span>
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keywordtype">char</span> *
<a name="l00154"></a>00154 netsnmp_callback_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="l00155"></a>00155 {
<a name="l00156"></a>00156 <span class="keywordtype">char</span> buf[SPRINT_MAX_LEN];
<a name="l00157"></a>00157 netsnmp_callback_info *mystuff;
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (!t)
<a name="l00160"></a>00160 <span class="keywordflow">return</span> strdup(<span class="stringliteral">"callback: unknown"</span>);
<a name="l00161"></a>00161
<a name="l00162"></a>00162 mystuff = (netsnmp_callback_info *) t->data;
<a name="l00163"></a>00163
<a name="l00164"></a>00164 if (!mystuff)
<a name="l00165"></a>00165 <span class="keywordflow">return</span> strdup(<span class="stringliteral">"callback: unknown"</span>);
<a name="l00166"></a>00166
<a name="l00167"></a>00167 snprintf(buf, SPRINT_MAX_LEN, <span class="stringliteral">"callback: %d on fd %d"</span>,
<a name="l00168"></a>00168 mystuff->callback_num, mystuff->pipefds[0]);
<a name="l00169"></a>00169 <span class="keywordflow">return</span> strdup(buf);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171
<a name="l00172"></a>00172
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="comment">/*</span>
<a name="l00175"></a>00175 <span class="comment"> * You can write something into opaque that will subsequently get passed back </span>
<a name="l00176"></a>00176 <span class="comment"> * to your send function if you like. For instance, you might want to</span>
<a name="l00177"></a>00177 <span class="comment"> * remember where a PDU came from, so that you can send a reply there... </span>
<a name="l00178"></a>00178 <span class="comment"> */</span>
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordtype">int</span>
<a name="l00181"></a>00181 netsnmp_callback_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="l00182"></a>00182 <span class="keywordtype">void</span> **opaque, <span class="keywordtype">int</span> *olength)
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184 <span class="keywordtype">int</span> rc = -1;
<a name="l00185"></a>00185 <span class="keywordtype">char</span> newbuf[1];
<a name="l00186"></a>00186 netsnmp_callback_info *mystuff = (netsnmp_callback_info *) t->data;
<a name="l00187"></a>00187
<a name="l00188"></a>00188 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_recv enter\n"</span>));
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordflow">while</span> (rc < 0) {
<a name="l00191"></a>00191 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00192"></a>00192 <span class="preprocessor"></span> rc = recv(mystuff->pipefds[0], newbuf, 1, 0);
<a name="l00193"></a>00193 <span class="preprocessor">#else</span>
<a name="l00194"></a>00194 <span class="preprocessor"></span> rc = read(mystuff->pipefds[0], newbuf, 1);
<a name="l00195"></a>00195 <span class="preprocessor">#endif</span>
<a name="l00196"></a>00196 <span class="preprocessor"></span> <span class="keywordflow">if</span> (rc < 0 && errno != EINTR) {
<a name="l00197"></a>00197 <span class="keywordflow">break</span>;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (mystuff->linkedto) {
<a name="l00202"></a>00202 <span class="comment">/*</span>
<a name="l00203"></a>00203 <span class="comment"> * we're the client. We don't need to do anything. </span>
<a name="l00204"></a>00204 <span class="comment"> */</span>
<a name="l00205"></a>00205 } <span class="keywordflow">else</span> {
<a name="l00206"></a>00206 <span class="comment">/*</span>
<a name="l00207"></a>00207 <span class="comment"> * malloc the space here, but it's filled in by</span>
<a name="l00208"></a>00208 <span class="comment"> * snmp_callback_created_pdu() below </span>
<a name="l00209"></a>00209 <span class="comment"> */</span>
<a name="l00210"></a>00210 <span class="keywordtype">int</span> *returnnum = (<span class="keywordtype">int</span> *) calloc(1, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>));
<a name="l00211"></a>00211 *opaque = returnnum;
<a name="l00212"></a>00212 *olength = <span class="keyword">sizeof</span>(int);
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_recv exit\n"</span>));
<a name="l00215"></a>00215 <span class="keywordflow">return</span> rc;
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00218"></a>00218
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordtype">int</span>
<a name="l00221"></a>00221 netsnmp_callback_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="l00222"></a>00222 <span class="keywordtype">void</span> **opaque, <span class="keywordtype">int</span> *olength)
<a name="l00223"></a>00223 {
<a name="l00224"></a>00224 <span class="keywordtype">int</span> from, rc = -1;
<a name="l00225"></a>00225 netsnmp_callback_info *mystuff = (netsnmp_callback_info *) t->data;
<a name="l00226"></a>00226 netsnmp_callback_pass *cp;
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="comment">/*</span>
<a name="l00229"></a>00229 <span class="comment"> * extract the pdu from the hacked buffer </span>
<a name="l00230"></a>00230 <span class="comment"> */</span>
<a name="l00231"></a>00231 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *other_side;
<a name="l00232"></a>00232 callback_hack *ch = (callback_hack *) * opaque;
<a name="l00233"></a>00233 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu = ch->pdu;
<a name="l00234"></a>00234 *opaque = ch->orig_transport_data;
<a name="l00235"></a>00235 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(ch);
<a name="l00236"></a>00236
<a name="l00237"></a>00237 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_send enter\n"</span>));
<a name="l00238"></a>00238
<a name="l00239"></a>00239 cp = <a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424" title="Mallocs memory of sizeof(t), zeros it and returns a pointer to it.">SNMP_MALLOC_TYPEDEF</a>(netsnmp_callback_pass);
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (!cp)
<a name="l00241"></a>00241 <span class="keywordflow">return</span> -1;
<a name="l00242"></a>00242
<a name="l00243"></a>00243 cp->pdu = snmp_clone_pdu(pdu);
<a name="l00244"></a>00244 <span class="keywordflow">if</span> (cp->pdu->transport_data) {
<a name="l00245"></a>00245 <span class="comment">/*</span>
<a name="l00246"></a>00246 <span class="comment"> * not needed and not properly freed later </span>
<a name="l00247"></a>00247 <span class="comment"> */</span>
<a name="l00248"></a>00248 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(cp->pdu->transport_data);
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="keywordflow">if</span> (cp->pdu->flags & UCD_MSG_FLAG_EXPECT_RESPONSE)
<a name="l00252"></a>00252 cp->pdu->flags ^= UCD_MSG_FLAG_EXPECT_RESPONSE;
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="comment">/*</span>
<a name="l00255"></a>00255 <span class="comment"> * push the sent pdu onto the stack </span>
<a name="l00256"></a>00256 <span class="comment"> */</span>
<a name="l00257"></a>00257 <span class="comment">/*</span>
<a name="l00258"></a>00258 <span class="comment"> * AND send a bogus byte to the remote callback receiver's pipe </span>
<a name="l00259"></a>00259 <span class="comment"> */</span>
<a name="l00260"></a>00260 <span class="keywordflow">if</span> (mystuff->linkedto) {
<a name="l00261"></a>00261 <span class="comment">/*</span>
<a name="l00262"></a>00262 <span class="comment"> * we're the client, send it to the parent </span>
<a name="l00263"></a>00263 <span class="comment"> */</span>
<a name="l00264"></a>00264 cp->return_transport_num = mystuff->callback_num;
<a name="l00265"></a>00265
<a name="l00266"></a>00266 other_side = find_transport_from_callback_num(mystuff->linkedto);
<a name="l00267"></a>00267 <span class="keywordflow">if</span> (!other_side) {
<a name="l00268"></a>00268 snmp_free_pdu(cp->pdu);
<a name="l00269"></a>00269 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(cp);
<a name="l00270"></a>00270 <span class="keywordflow">return</span> -1;
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272
<a name="l00273"></a>00273 <span class="keywordflow">while</span> (rc < 0) {
<a name="l00274"></a>00274 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00275"></a>00275 <span class="preprocessor"></span> rc = send(((netsnmp_callback_info*) other_side->data)->pipefds[1], <span class="stringliteral">" "</span>, 1, 0);
<a name="l00276"></a>00276 <span class="preprocessor">#else</span>
<a name="l00277"></a>00277 <span class="preprocessor"></span> rc = write(((netsnmp_callback_info *)other_side->data)->pipefds[1],
<a name="l00278"></a>00278 <span class="stringliteral">" "</span>, 1);
<a name="l00279"></a>00279 <span class="preprocessor">#endif</span>
<a name="l00280"></a>00280 <span class="preprocessor"></span> <span class="keywordflow">if</span> (rc < 0 && errno != EINTR) {
<a name="l00281"></a>00281 <span class="keywordflow">break</span>;
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283 }
<a name="l00284"></a>00284 callback_push_queue(mystuff->linkedto, cp);
<a name="l00285"></a>00285 <span class="comment">/*</span>
<a name="l00286"></a>00286 <span class="comment"> * we don't need the transport data any more </span>
<a name="l00287"></a>00287 <span class="comment"> */</span>
<a name="l00288"></a>00288 <span class="keywordflow">if</span> (*opaque) {
<a name="l00289"></a>00289 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(*opaque);
<a name="l00290"></a>00290 *opaque = NULL;
<a name="l00291"></a>00291 }
<a name="l00292"></a>00292 } <span class="keywordflow">else</span> {
<a name="l00293"></a>00293 <span class="comment">/*</span>
<a name="l00294"></a>00294 <span class="comment"> * we're the server, send it to the person that sent us the request </span>
<a name="l00295"></a>00295 <span class="comment"> */</span>
<a name="l00296"></a>00296 from = **((<span class="keywordtype">int</span> **) opaque);
<a name="l00297"></a>00297 <span class="comment">/*</span>
<a name="l00298"></a>00298 <span class="comment"> * we don't need the transport data any more </span>
<a name="l00299"></a>00299 <span class="comment"> */</span>
<a name="l00300"></a>00300 <span class="keywordflow">if</span> (*opaque) {
<a name="l00301"></a>00301 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(*opaque);
<a name="l00302"></a>00302 *opaque = NULL;
<a name="l00303"></a>00303 }
<a name="l00304"></a>00304 other_side = find_transport_from_callback_num(from);
<a name="l00305"></a>00305 <span class="keywordflow">if</span> (!other_side) {
<a name="l00306"></a>00306 snmp_free_pdu(cp->pdu);
<a name="l00307"></a>00307 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(cp);
<a name="l00308"></a>00308 <span class="keywordflow">return</span> -1;
<a name="l00309"></a>00309 }
<a name="l00310"></a>00310 <span class="keywordflow">while</span> (rc < 0) {
<a name="l00311"></a>00311 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00312"></a>00312 <span class="preprocessor"></span> rc = send(((netsnmp_callback_info*) other_side->data)->pipefds[1], <span class="stringliteral">" "</span>, 1, 0);
<a name="l00313"></a>00313 <span class="preprocessor">#else</span>
<a name="l00314"></a>00314 <span class="preprocessor"></span> rc = write(((netsnmp_callback_info *)other_side->data)->pipefds[1],
<a name="l00315"></a>00315 <span class="stringliteral">" "</span>, 1);
<a name="l00316"></a>00316 <span class="preprocessor">#endif</span>
<a name="l00317"></a>00317 <span class="preprocessor"></span> <span class="keywordflow">if</span> (rc < 0 && errno != EINTR) {
<a name="l00318"></a>00318 <span class="keywordflow">break</span>;
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321 callback_push_queue(from, cp);
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323
<a name="l00324"></a>00324 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_send exit\n"</span>));
<a name="l00325"></a>00325 <span class="keywordflow">return</span> 0;
<a name="l00326"></a>00326 }
<a name="l00327"></a>00327
<a name="l00328"></a>00328
<a name="l00329"></a>00329
<a name="l00330"></a>00330 <span class="keywordtype">int</span>
<a name="l00331"></a>00331 netsnmp_callback_close(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t)
<a name="l00332"></a>00332 {
<a name="l00333"></a>00333 <span class="keywordtype">int</span> rc;
<a name="l00334"></a>00334 netsnmp_callback_info *mystuff = (netsnmp_callback_info *) t->data;
<a name="l00335"></a>00335 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_close enter\n"</span>));
<a name="l00336"></a>00336
<a name="l00337"></a>00337 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00338"></a>00338 <span class="preprocessor"></span> rc = closesocket(mystuff->pipefds[0]);
<a name="l00339"></a>00339 rc |= closesocket(mystuff->pipefds[1]);
<a name="l00340"></a>00340 <span class="preprocessor">#else</span>
<a name="l00341"></a>00341 <span class="preprocessor"></span> rc = close(mystuff->pipefds[0]);
<a name="l00342"></a>00342 rc |= close(mystuff->pipefds[1]);
<a name="l00343"></a>00343 <span class="preprocessor">#endif</span>
<a name="l00344"></a>00344 <span class="preprocessor"></span>
<a name="l00345"></a>00345 rc |= netsnmp_transport_remove_from_list(&trlist, t);
<a name="l00346"></a>00346
<a name="l00347"></a>00347 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_close exit\n"</span>));
<a name="l00348"></a>00348 <span class="keywordflow">return</span> rc;
<a name="l00349"></a>00349 }
<a name="l00350"></a>00350
<a name="l00351"></a>00351
<a name="l00352"></a>00352
<a name="l00353"></a>00353 <span class="keywordtype">int</span>
<a name="l00354"></a>00354 netsnmp_callback_accept(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t)
<a name="l00355"></a>00355 {
<a name="l00356"></a>00356 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_accept enter\n"</span>));
<a name="l00357"></a>00357 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_accept exit\n"</span>));
<a name="l00358"></a>00358 <span class="keywordflow">return</span> 0;
<a name="l00359"></a>00359 }
<a name="l00360"></a>00360
<a name="l00361"></a>00361
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="comment">/*</span>
<a name="l00364"></a>00364 <span class="comment"> * Open a Callback-domain transport for SNMP. Local is TRUE if addr</span>
<a name="l00365"></a>00365 <span class="comment"> * is the local address to bind to (i.e. this is a server-type</span>
<a name="l00366"></a>00366 <span class="comment"> * session); otherwise addr is the remote address to send things to</span>
<a name="l00367"></a>00367 <span class="comment"> * (and we make up a temporary name for the local end of the</span>
<a name="l00368"></a>00368 <span class="comment"> * connection). </span>
<a name="l00369"></a>00369 <span class="comment"> */</span>
<a name="l00370"></a>00370
<a name="l00371"></a>00371 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *
<a name="l00372"></a>00372 netsnmp_callback_transport(<span class="keywordtype">int</span> to)
<a name="l00373"></a>00373 {
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *t = NULL;
<a name="l00376"></a>00376 netsnmp_callback_info *mydata;
<a name="l00377"></a>00377 <span class="keywordtype">int</span> rc;
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="comment">/*</span>
<a name="l00380"></a>00380 <span class="comment"> * transport </span>
<a name="l00381"></a>00381 <span class="comment"> */</span>
<a name="l00382"></a>00382 t = <a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424" title="Mallocs memory of sizeof(t), zeros it and returns a pointer to it.">SNMP_MALLOC_TYPEDEF</a>(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a>);
<a name="l00383"></a>00383 <span class="keywordflow">if</span> (!t)
<a name="l00384"></a>00384 <span class="keywordflow">return</span> NULL;
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <span class="comment">/*</span>
<a name="l00387"></a>00387 <span class="comment"> * our stuff </span>
<a name="l00388"></a>00388 <span class="comment"> */</span>
<a name="l00389"></a>00389 mydata = <a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424" title="Mallocs memory of sizeof(t), zeros it and returns a pointer to it.">SNMP_MALLOC_TYPEDEF</a>(netsnmp_callback_info);
<a name="l00390"></a>00390 mydata->linkedto = to;
<a name="l00391"></a>00391 mydata->callback_num = ++callback_count;
<a name="l00392"></a>00392 mydata->data = NULL;
<a name="l00393"></a>00393 t->data = mydata;
<a name="l00394"></a>00394
<a name="l00395"></a>00395 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00396"></a>00396 <span class="preprocessor"></span> rc = create_winpipe_transport(mydata->pipefds);
<a name="l00397"></a>00397 <span class="preprocessor">#else</span>
<a name="l00398"></a>00398 <span class="preprocessor"></span> rc = pipe(mydata->pipefds);
<a name="l00399"></a>00399 <span class="preprocessor">#endif</span>
<a name="l00400"></a>00400 <span class="preprocessor"></span> t->sock = mydata->pipefds[0];
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (rc) {
<a name="l00403"></a>00403 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(mydata);
<a name="l00404"></a>00404 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(t);
<a name="l00405"></a>00405 <span class="keywordflow">return</span> NULL;
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 t->f_recv = netsnmp_callback_recv;
<a name="l00409"></a>00409 t->f_send = netsnmp_callback_send;
<a name="l00410"></a>00410 t->f_close = netsnmp_callback_close;
<a name="l00411"></a>00411 t->f_accept = netsnmp_callback_accept;
<a name="l00412"></a>00412 t->f_fmtaddr = netsnmp_callback_fmtaddr;
<a name="l00413"></a>00413
<a name="l00414"></a>00414 netsnmp_transport_add_to_list(&trlist, t);
<a name="l00415"></a>00415
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (to)
<a name="l00417"></a>00417 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"initialized %d linked to %d\n"</span>,
<a name="l00418"></a>00418 mydata->callback_num, to));
<a name="l00419"></a>00419 <span class="keywordflow">else</span>
<a name="l00420"></a>00420 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>,
<a name="l00421"></a>00421 <span class="stringliteral">"initialized master listening on %d\n"</span>,
<a name="l00422"></a>00422 mydata->callback_num));
<a name="l00423"></a>00423 <span class="keywordflow">return</span> t;
<a name="l00424"></a>00424 }
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="keywordtype">int</span>
<a name="l00427"></a>00427 netsnmp_callback_hook_parse(<a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> * sp,
<a name="l00428"></a>00428 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu,
<a name="l00429"></a>00429 u_char * packetptr, <span class="keywordtype">size_t</span> len)
<a name="l00430"></a>00430 {
<a name="l00431"></a>00431 <span class="keywordflow">if</span> (SNMP_MSG_RESPONSE == pdu-><a class="code" href="structsnmp__pdu.html#a4b4dfa4964546623586c027cf1d68ca6" title="Type of this PDU.">command</a> ||
<a name="l00432"></a>00432 SNMP_MSG_REPORT == pdu-><a class="code" href="structsnmp__pdu.html#a4b4dfa4964546623586c027cf1d68ca6" title="Type of this PDU.">command</a>)
<a name="l00433"></a>00433 pdu->flags |= UCD_MSG_FLAG_RESPONSE_PDU;
<a name="l00434"></a>00434 <span class="keywordflow">else</span>
<a name="l00435"></a>00435 pdu->flags &= (~UCD_MSG_FLAG_RESPONSE_PDU);
<a name="l00436"></a>00436
<a name="l00437"></a>00437 <span class="keywordflow">return</span> SNMP_ERR_NOERROR;
<a name="l00438"></a>00438 }
<a name="l00439"></a>00439
<a name="l00440"></a>00440 <span class="keywordtype">int</span>
<a name="l00441"></a>00441 netsnmp_callback_hook_build(<a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> * sp,
<a name="l00442"></a>00442 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu, u_char * ptk, <span class="keywordtype">size_t</span> * len)
<a name="l00443"></a>00443 {
<a name="l00444"></a>00444 <span class="comment">/*</span>
<a name="l00445"></a>00445 <span class="comment"> * very gross hack, as this is passed later to the transport_send</span>
<a name="l00446"></a>00446 <span class="comment"> * function </span>
<a name="l00447"></a>00447 <span class="comment"> */</span>
<a name="l00448"></a>00448 callback_hack *ch = <a class="code" href="group__util.html#ga9cd013bb193de5048149afeb9d94e424" title="Mallocs memory of sizeof(t), zeros it and returns a pointer to it.">SNMP_MALLOC_TYPEDEF</a>(callback_hack);
<a name="l00449"></a>00449 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_build enter\n"</span>));
<a name="l00450"></a>00450 ch->pdu = pdu;
<a name="l00451"></a>00451 ch->orig_transport_data = pdu-><a class="code" href="structsnmp__pdu.html#a89e42cfcb542ac55880e25e3284e5d2c" title="Transport-specific opaque data.">transport_data</a>;
<a name="l00452"></a>00452 pdu-><a class="code" href="structsnmp__pdu.html#a89e42cfcb542ac55880e25e3284e5d2c" title="Transport-specific opaque data.">transport_data</a> = ch;
<a name="l00453"></a>00453 <span class="keywordflow">switch</span> (pdu-><a class="code" href="structsnmp__pdu.html#a4b4dfa4964546623586c027cf1d68ca6" title="Type of this PDU.">command</a>) {
<a name="l00454"></a>00454 <span class="keywordflow">case</span> SNMP_MSG_GETBULK:
<a name="l00455"></a>00455 <span class="keywordflow">if</span> (pdu->max_repetitions < 0) {
<a name="l00456"></a>00456 sp-><a class="code" href="structsnmp__session.html#afb3f06f6d767a95ebd59b35d2f10faf7" title="copy of library errno">s_snmp_errno</a> = SNMPERR_BAD_REPETITIONS;
<a name="l00457"></a>00457 <span class="keywordflow">return</span> -1;
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459 <span class="keywordflow">if</span> (pdu->non_repeaters < 0) {
<a name="l00460"></a>00460 sp-><a class="code" href="structsnmp__session.html#afb3f06f6d767a95ebd59b35d2f10faf7" title="copy of library errno">s_snmp_errno</a> = SNMPERR_BAD_REPEATERS;
<a name="l00461"></a>00461 <span class="keywordflow">return</span> -1;
<a name="l00462"></a>00462 }
<a name="l00463"></a>00463 <span class="keywordflow">break</span>;
<a name="l00464"></a>00464 <span class="keywordflow">case</span> SNMP_MSG_RESPONSE:
<a name="l00465"></a>00465 <span class="keywordflow">case</span> SNMP_MSG_TRAP:
<a name="l00466"></a>00466 <span class="keywordflow">case</span> SNMP_MSG_TRAP2:
<a name="l00467"></a>00467 pdu->flags &= (~UCD_MSG_FLAG_EXPECT_RESPONSE);
<a name="l00468"></a>00468 <span class="comment">/*</span>
<a name="l00469"></a>00469 <span class="comment"> * Fallthrough</span>
<a name="l00470"></a>00470 <span class="comment"> */</span>
<a name="l00471"></a>00471 <span class="keywordflow">default</span>:
<a name="l00472"></a>00472 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#a44ff060871736e6fda87c27357f9dbc5" title="Error status (non_repeaters in GetBulk)">errstat</a> == SNMP_DEFAULT_ERRSTAT)
<a name="l00473"></a>00473 pdu-><a class="code" href="structsnmp__pdu.html#a44ff060871736e6fda87c27357f9dbc5" title="Error status (non_repeaters in GetBulk)">errstat</a> = 0;
<a name="l00474"></a>00474 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#ab3a133b2a800a8d56aa96fc3b67638d0" title="Error index (max_repetitions in GetBulk)">errindex</a> == SNMP_DEFAULT_ERRINDEX)
<a name="l00475"></a>00475 pdu-><a class="code" href="structsnmp__pdu.html#ab3a133b2a800a8d56aa96fc3b67638d0" title="Error index (max_repetitions in GetBulk)">errindex</a> = 0;
<a name="l00476"></a>00476 <span class="keywordflow">break</span>;
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478
<a name="l00479"></a>00479 <span class="comment">/*</span>
<a name="l00480"></a>00480 <span class="comment"> * Copy missing values from session defaults</span>
<a name="l00481"></a>00481 <span class="comment"> */</span>
<a name="l00482"></a>00482 <span class="keywordflow">switch</span> (pdu-><a class="code" href="structsnmp__pdu.html#a923d65b1202d6250bc030b6ca03e4c93" title="snmp version">version</a>) {
<a name="l00483"></a>00483 <span class="preprocessor">#ifndef NETSNMP_DISABLE_SNMPV1</span>
<a name="l00484"></a>00484 <span class="preprocessor"></span> <span class="keywordflow">case</span> SNMP_VERSION_1:
<a name="l00485"></a>00485 <span class="preprocessor">#endif</span>
<a name="l00486"></a>00486 <span class="preprocessor"></span><span class="preprocessor">#ifndef NETSNMP_DISABLE_SNMPV2C</span>
<a name="l00487"></a>00487 <span class="preprocessor"></span> <span class="keywordflow">case</span> SNMP_VERSION_2c:
<a name="l00488"></a>00488 <span class="preprocessor">#endif</span>
<a name="l00489"></a>00489 <span class="preprocessor"></span><span class="preprocessor">#if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C)</span>
<a name="l00490"></a>00490 <span class="preprocessor"></span> <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#ae92f6634c376171f08b69bde084471fd" title="length of community name.">community_len</a> == 0) {
<a name="l00491"></a>00491 <span class="keywordflow">if</span> (sp-><a class="code" href="structsnmp__session.html#acd17283f3a20f2ca72ea44125c5015a2" title="Length of community name.">community_len</a> == 0) {
<a name="l00492"></a>00492 sp-><a class="code" href="structsnmp__session.html#afb3f06f6d767a95ebd59b35d2f10faf7" title="copy of library errno">s_snmp_errno</a> = SNMPERR_BAD_COMMUNITY;
<a name="l00493"></a>00493 <span class="keywordflow">return</span> -1;
<a name="l00494"></a>00494 }
<a name="l00495"></a>00495 pdu-><a class="code" href="structsnmp__pdu.html#a0731a2d5d2cfc66c4e7f34150a5c79a3" title="community for outgoing requests.">community</a> = (u_char *) malloc(sp-><a class="code" href="structsnmp__session.html#acd17283f3a20f2ca72ea44125c5015a2" title="Length of community name.">community_len</a>);
<a name="l00496"></a>00496 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#a0731a2d5d2cfc66c4e7f34150a5c79a3" title="community for outgoing requests.">community</a> == NULL) {
<a name="l00497"></a>00497 sp-><a class="code" href="structsnmp__session.html#afb3f06f6d767a95ebd59b35d2f10faf7" title="copy of library errno">s_snmp_errno</a> = SNMPERR_MALLOC;
<a name="l00498"></a>00498 <span class="keywordflow">return</span> -1;
<a name="l00499"></a>00499 }
<a name="l00500"></a>00500 memmove(pdu-><a class="code" href="structsnmp__pdu.html#a0731a2d5d2cfc66c4e7f34150a5c79a3" title="community for outgoing requests.">community</a>,
<a name="l00501"></a>00501 sp-><a class="code" href="structsnmp__session.html#ac6f500fb8171149a2dee9d85c772c021" title="community for outgoing requests.">community</a>, sp-><a class="code" href="structsnmp__session.html#acd17283f3a20f2ca72ea44125c5015a2" title="Length of community name.">community_len</a>);
<a name="l00502"></a>00502 pdu-><a class="code" href="structsnmp__pdu.html#ae92f6634c376171f08b69bde084471fd" title="length of community name.">community_len</a> = sp-><a class="code" href="structsnmp__session.html#acd17283f3a20f2ca72ea44125c5015a2" title="Length of community name.">community_len</a>;
<a name="l00503"></a>00503 }
<a name="l00504"></a>00504 <span class="keywordflow">break</span>;
<a name="l00505"></a>00505 <span class="preprocessor">#endif</span>
<a name="l00506"></a>00506 <span class="preprocessor"></span> <span class="keywordflow">case</span> SNMP_VERSION_3:
<a name="l00507"></a>00507 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#ae64416ffa9b2a034c6e8359215f7b706" title="Length of securityName.">securityNameLen</a> == 0) {
<a name="l00508"></a>00508 pdu-><a class="code" href="structsnmp__pdu.html#a5baf4f82cf5507bc1314a3efc6886805" title="on behalf of this principal">securityName</a> = (<span class="keywordtype">char</span> *)malloc(sp-><a class="code" href="structsnmp__session.html#aded39fd06dcaa1159633d3783b9e4941" title="Length of securityName.">securityNameLen</a>);
<a name="l00509"></a>00509 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#a5baf4f82cf5507bc1314a3efc6886805" title="on behalf of this principal">securityName</a> == NULL) {
<a name="l00510"></a>00510 sp-><a class="code" href="structsnmp__session.html#afb3f06f6d767a95ebd59b35d2f10faf7" title="copy of library errno">s_snmp_errno</a> = SNMPERR_MALLOC;
<a name="l00511"></a>00511 <span class="keywordflow">return</span> -1;
<a name="l00512"></a>00512 }
<a name="l00513"></a>00513 memmove(pdu-><a class="code" href="structsnmp__pdu.html#a5baf4f82cf5507bc1314a3efc6886805" title="on behalf of this principal">securityName</a>,
<a name="l00514"></a>00514 sp-><a class="code" href="structsnmp__session.html#a247882bf1e340be5ec1d22d41d5a0179" title="on behalf of this principal">securityName</a>, sp-><a class="code" href="structsnmp__session.html#aded39fd06dcaa1159633d3783b9e4941" title="Length of securityName.">securityNameLen</a>);
<a name="l00515"></a>00515 pdu-><a class="code" href="structsnmp__pdu.html#ae64416ffa9b2a034c6e8359215f7b706" title="Length of securityName.">securityNameLen</a> = sp-><a class="code" href="structsnmp__session.html#aded39fd06dcaa1159633d3783b9e4941" title="Length of securityName.">securityNameLen</a>;
<a name="l00516"></a>00516 }
<a name="l00517"></a>00517 <span class="keywordflow">if</span> (pdu->securityModel == -1)
<a name="l00518"></a>00518 pdu->securityModel = sp-><a class="code" href="structsnmp__session.html#a7bf36554eeaa2eedb5ba5ff7ec76f1a8" title="snmp security model, v1, v2c, usm">securityModel</a>;
<a name="l00519"></a>00519 <span class="keywordflow">if</span> (pdu-><a class="code" href="structsnmp__pdu.html#a7d1db322918d6d7bc34fe1eb55301d6a" title="noAuthNoPriv, authNoPriv, authPriv">securityLevel</a> == 0)
<a name="l00520"></a>00520 pdu-><a class="code" href="structsnmp__pdu.html#a7d1db322918d6d7bc34fe1eb55301d6a" title="noAuthNoPriv, authNoPriv, authPriv">securityLevel</a> = sp-><a class="code" href="structsnmp__session.html#a5394bc51b76c7f0b46e5efb464e87feb" title="noAuthNoPriv, authNoPriv, authPriv">securityLevel</a>;
<a name="l00521"></a>00521 <span class="comment">/* WHAT ELSE ?? */</span>
<a name="l00522"></a>00522 }
<a name="l00523"></a>00523 *len = 1;
<a name="l00524"></a>00524 DEBUGMSGTL((<span class="stringliteral">"transport_callback"</span>, <span class="stringliteral">"hook_build exit\n"</span>));
<a name="l00525"></a>00525 <span class="keywordflow">return</span> 1;
<a name="l00526"></a>00526 }
<a name="l00527"></a>00527
<a name="l00528"></a>00528 <span class="keywordtype">int</span>
<a name="l00529"></a>00529 netsnmp_callback_check_packet(u_char * pkt, <span class="keywordtype">size_t</span> len)
<a name="l00530"></a>00530 {
<a name="l00531"></a>00531 <span class="keywordflow">return</span> 1;
<a name="l00532"></a>00532 }
<a name="l00533"></a>00533
<a name="l00534"></a>00534 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *
<a name="l00535"></a>00535 netsnmp_callback_create_pdu(<a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *transport,
<a name="l00536"></a>00536 <span class="keywordtype">void</span> *opaque, <span class="keywordtype">size_t</span> olength)
<a name="l00537"></a>00537 {
<a name="l00538"></a>00538 <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu;
<a name="l00539"></a>00539 netsnmp_callback_pass *cp =
<a name="l00540"></a>00540 callback_pop_queue(((netsnmp_callback_info *) transport->data)->
<a name="l00541"></a>00541 callback_num);
<a name="l00542"></a>00542 <span class="keywordflow">if</span> (!cp)
<a name="l00543"></a>00543 <span class="keywordflow">return</span> NULL;
<a name="l00544"></a>00544 pdu = cp->pdu;
<a name="l00545"></a>00545 pdu-><a class="code" href="structsnmp__pdu.html#a89e42cfcb542ac55880e25e3284e5d2c" title="Transport-specific opaque data.">transport_data</a> = opaque;
<a name="l00546"></a>00546 pdu->transport_data_length = olength;
<a name="l00547"></a>00547 <span class="keywordflow">if</span> (opaque) <span class="comment">/* if created, we're the server */</span>
<a name="l00548"></a>00548 *((<span class="keywordtype">int</span> *) opaque) = cp->return_transport_num;
<a name="l00549"></a>00549 <a class="code" href="group__util.html#ga951e93edb6f0ea941e26155e3f8912a6" title="Frees a pointer only if it is !NULL and sets its value to NULL.">SNMP_FREE</a>(cp);
<a name="l00550"></a>00550 <span class="keywordflow">return</span> pdu;
<a name="l00551"></a>00551 }
<a name="l00552"></a>00552
<a name="l00553"></a>00553 <a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> *
<a name="l00554"></a>00554 netsnmp_callback_open(<span class="keywordtype">int</span> attach_to,
<a name="l00555"></a>00555 <span class="keywordtype">int</span> (*return_func) (<span class="keywordtype">int</span> op,
<a name="l00556"></a>00556 <a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> * session,
<a name="l00557"></a>00557 <span class="keywordtype">int</span> reqid, <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *pdu,
<a name="l00558"></a>00558 <span class="keywordtype">void</span> *magic),
<a name="l00559"></a>00559 <span class="keywordtype">int</span> (*fpre_parse) (<a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> *,
<a name="l00560"></a>00560 <span class="keyword">struct</span> <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport_s</a> *,
<a name="l00561"></a>00561 <span class="keywordtype">void</span> *, <span class="keywordtype">int</span>),
<a name="l00562"></a>00562 <span class="keywordtype">int</span> (*fpost_parse) (<a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> *, <a class="code" href="structsnmp__pdu.html" title="The snmp protocol data unit.">netsnmp_pdu</a> *,
<a name="l00563"></a>00563 <span class="keywordtype">int</span>))
<a name="l00564"></a>00564 {
<a name="l00565"></a>00565 <a class="code" href="structsnmp__session.html" title="The snmp session structure.">netsnmp_session</a> callback_sess, *callback_ss;
<a name="l00566"></a>00566 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *callback_tr;
<a name="l00567"></a>00567
<a name="l00568"></a>00568 callback_tr = netsnmp_callback_transport(attach_to);
<a name="l00569"></a>00569 snmp_sess_init(&callback_sess);
<a name="l00570"></a>00570 callback_sess.<a class="code" href="structsnmp__session.html#a3918c1cdd264f6a40ab06c457097a6d9" title="Function to interpret incoming data.">callback</a> = return_func;
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (attach_to) {
<a name="l00572"></a>00572 <span class="comment">/*</span>
<a name="l00573"></a>00573 <span class="comment"> * client </span>
<a name="l00574"></a>00574 <span class="comment"> */</span>
<a name="l00575"></a>00575 <span class="comment">/*</span>
<a name="l00576"></a>00576 <span class="comment"> * trysess.community = (u_char *) callback_ss; </span>
<a name="l00577"></a>00577 <span class="comment"> */</span>
<a name="l00578"></a>00578 } <span class="keywordflow">else</span> {
<a name="l00579"></a>00579 callback_sess.<a class="code" href="structsnmp__session.html#a9284be33e69062f7f90723a4ee04409b" title="are we the authoritative engine?">isAuthoritative</a> = SNMP_SESS_AUTHORITATIVE;
<a name="l00580"></a>00580 }
<a name="l00581"></a>00581 callback_sess.<a class="code" href="structsnmp__session.html#aa69bfb92a55adeb3dec474a38c33768f" title="UDP port number of peer.">remote_port</a> = 0;
<a name="l00582"></a>00582 callback_sess.<a class="code" href="structsnmp__session.html#a462db7e25f876119ff965093261073ad" title="Number of retries before timeout.">retries</a> = 0;
<a name="l00583"></a>00583 callback_sess.<a class="code" href="structsnmp__session.html#acd498bd5db671be71adc63588b0ce72c" title="Number of uS until first timeout, then exponential backoff.">timeout</a> = 30000000;
<a name="l00584"></a>00584 callback_sess.<a class="code" href="structsnmp__session.html#ae50774f611e22f73df23e97094077e49" title="snmp version">version</a> = SNMP_DEFAULT_VERSION; <span class="comment">/* (mostly) bogus */</span>
<a name="l00585"></a>00585 callback_ss = snmp_add_full(&callback_sess, callback_tr,
<a name="l00586"></a>00586 fpre_parse,
<a name="l00587"></a>00587 netsnmp_callback_hook_parse, fpost_parse,
<a name="l00588"></a>00588 netsnmp_callback_hook_build,
<a name="l00589"></a>00589 NULL,
<a name="l00590"></a>00590 netsnmp_callback_check_packet,
<a name="l00591"></a>00591 netsnmp_callback_create_pdu);
<a name="l00592"></a>00592 <span class="keywordflow">if</span> (callback_ss)
<a name="l00593"></a>00593 callback_ss-><a class="code" href="structsnmp__session.html#a0ceaa4e08dca57df14aba6499d908cd3" title="My UDP port number, 0 for default, picked randomly.">local_port</a> =
<a name="l00594"></a>00594 ((netsnmp_callback_info *) callback_tr->data)->callback_num;
<a name="l00595"></a>00595 <span class="keywordflow">return</span> callback_ss;
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597
<a name="l00598"></a>00598
<a name="l00599"></a>00599
<a name="l00600"></a>00600 <span class="keywordtype">void</span>
<a name="l00601"></a>00601 netsnmp_clear_callback_list(<span class="keywordtype">void</span>)
<a name="l00602"></a>00602 {
<a name="l00603"></a>00603
<a name="l00604"></a>00604 <a class="code" href="structnetsnmp__transport__list__s.html">netsnmp_transport_list</a> *list = trlist, *next = NULL;
<a name="l00605"></a>00605 <a class="code" href="structnetsnmp__transport__s.html">netsnmp_transport</a> *tr = NULL;
<a name="l00606"></a>00606
<a name="l00607"></a>00607 DEBUGMSGTL((<span class="stringliteral">"callback_clear"</span>, <span class="stringliteral">"called netsnmp_callback_clear_list()\n"</span>));
<a name="l00608"></a>00608 <span class="keywordflow">while</span> (list != NULL) {
<a name="l00609"></a>00609 next = list->next;
<a name="l00610"></a>00610 tr = list->transport;
<a name="l00611"></a>00611
<a name="l00612"></a>00612 <span class="keywordflow">if</span> (tr != NULL) {
<a name="l00613"></a>00613 tr->f_close(tr);
<a name="l00614"></a>00614 netsnmp_transport_remove_from_list(&trlist, list->transport);
<a name="l00615"></a>00615 netsnmp_transport_free(list->transport);
<a name="l00616"></a>00616 }
<a name="l00617"></a>00617 list = next;
<a name="l00618"></a>00618 }
<a name="l00619"></a>00619 trlist = NULL;
<a name="l00620"></a>00620
<a name="l00621"></a>00621 }
<a name="l00622"></a>00622
<a name="l00623"></a>00623 <span class="preprocessor">#endif </span><span class="comment">/* NETSNMP_TRANSPORT_CALLBACK_DOMAIN */</span>
</pre></div></div><!-- contents -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.7.6.1
</small></address>
</body>
</html>