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<h1>correlation.c File Reference</h1> </div>
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<code>#include &quot;<a class="el" href="spp__ai_8h_source.html">spp_ai.h</a>&quot;</code><br/>
<code>#include &lt;stdio.h&gt;</code><br/>
<code>#include &lt;stdlib.h&gt;</code><br/>
<code>#include &lt;string.h&gt;</code><br/>
<code>#include &lt;unistd.h&gt;</code><br/>
<code>#include &lt;time.h&gt;</code><br/>
<code>#include &lt;math.h&gt;</code><br/>
<code>#include &lt;alloca.h&gt;</code><br/>
<code>#include &lt;sys/stat.h&gt;</code><br/>
<code>#include &lt;pthread.h&gt;</code><br/>
<code>#include &lt;libxml/xmlreader.h&gt;</code><br/>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="structAI__alert__correlation__key.html">AI_alert_correlation_key</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="structAI__alert__correlation.html">AI_alert_correlation</a></td></tr>
<tr><td colspan="2"><h2><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum &nbsp;</td><td class="memItemRight" valign="bottom">{ <br/>
&nbsp;&nbsp;<a class="el" href="group__correlation.html#gga06fc87d81c62e9abb8790b6e5713c55ba0b3b5f651ab0c6355666ff7b1c778af8">inHyperAlert</a>,
<a class="el" href="group__correlation.html#gga06fc87d81c62e9abb8790b6e5713c55ba52d913c46f650f89a5da3ff4bfb7a45d">inSnortIdTag</a>,
<a class="el" href="group__correlation.html#gga06fc87d81c62e9abb8790b6e5713c55ba828f2ec4acb20bae9b9c9fb0c5e0881f">inPreTag</a>,
<a class="el" href="group__correlation.html#gga06fc87d81c62e9abb8790b6e5713c55baf6430d8e5b9791cca74ec3b325a8339f">inPostTag</a>,
<br/>
&nbsp;&nbsp;<a class="el" href="group__correlation.html#gga06fc87d81c62e9abb8790b6e5713c55ba551d1861515058fbfe34955d4170ae67">TAG_NUM</a>
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga9bcb94264ffe30f113f3fb7287b774e3">_AI_correlation_table_cleanup</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Clean up the correlation hash table. <a href="group__correlation.html#ga9bcb94264ffe30f113f3fb7287b774e3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga4267a39fa1a5ac035015823bca43288e">_AI_print_correlated_alerts</a> (<a class="el" href="structAI__alert__correlation.html">AI_alert_correlation</a> *corr, FILE *fp)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Recursively write a flow of correlated alerts to a .dot file, ready for being rendered as graph. <a href="group__correlation.html#ga4267a39fa1a5ac035015823bca43288e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE char *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga7a1b2d01f526f24ea91d7f08bdefd4fe">_AI_get_function_name</a> (const char *orig_stmt)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get the name of the function called by a pre-condition or post-condition predicate. <a href="group__correlation.html#ga7a1b2d01f526f24ea91d7f08bdefd4fe"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE char **&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#gab716702cd226ab2ad957234a92da6e4a">_AI_get_function_arguments</a> (char *orig_stmt, int *n_args)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get the arguments passed to a function predicate in a pre-condition or post-condition (comma-separated values). <a href="group__correlation.html#gab716702cd226ab2ad957234a92da6e4a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga9cb283b28a66829574add58a251b93c6">_AI_correlation_coefficient</a> (<a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *a, <a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *b)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Compute the correlation coefficient between two alerts, as INTERSECTION(pre(B), post(A) / UNION(pre(B), post(A)). <a href="group__correlation.html#ga9cb283b28a66829574add58a251b93c6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga70a4aaf8b689472dad62ba7a9bbde1a6">_AI_macro_subst</a> (<a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> **alert)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Substitute the macros in hyperalert pre-conditions and post-conditions with their associated values. <a href="group__correlation.html#ga70a4aaf8b689472dad62ba7a9bbde1a6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="structAI__hyperalert__info.html">AI_hyperalert_info</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga929e5c17fdb247a998d83ed6a4ae5a65">_AI_hyperalert_from_XML</a> (<a class="el" href="structAI__hyperalert__key.html">AI_hyperalert_key</a> key)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Parse info about a hyperalert from a correlation XML file, if it exists. <a href="group__correlation.html#ga929e5c17fdb247a998d83ed6a4ae5a65"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga939353a4e15de7a8f4145ab986f584be">AI_alert_correlation_thread</a> (void *arg)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Thread for correlating clustered alerts. <a href="group__correlation.html#ga939353a4e15de7a8f4145ab986f584be"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="var-members"></a>
Variables</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="structAI__hyperalert__info.html">AI_hyperalert_info</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#gae56c79aa018caaeebeeb709a9e51c9c2">hyperalerts</a> = NULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="structAI__config.html">AI_config</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#gaad7a982b6016390e7cd1164bd7db8bca">conf</a> = NULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#gae837fc04e61c0eb052f997c54b4fd9fe">alerts</a> = NULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="structAI__alert__correlation.html">AI_alert_correlation</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#ga701934a296c51f2397d24e8bf4a9f021">correlation_table</a> = NULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="spp__ai_8h.html#a3e5b8192e7d9ffaf3542f1210aec18dd">BOOL</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__correlation.html#gafebc81c042a632dc987e113b7f390274">lock_flag</a> = false</td></tr>
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