<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!--Converted with LaTeX2HTML 2008 (1.71) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Engine structure</TITLE> <META NAME="description" CONTENT="Engine structure"> <META NAME="keywords" CONTENT="clamdoc"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2008"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="clamdoc.css"> <LINK REL="next" HREF="node55.html"> <LINK REL="previous" HREF="node53.html"> <LINK REL="up" HREF="node49.html"> <LINK REL="next" HREF="node55.html"> </HEAD> <BODY > <DIV CLASS="navigation"><!--Navigation Panel--> <A NAME="tex2html934" HREF="node55.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html930" HREF="node49.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html924" HREF="node53.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html932" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html935" HREF="node55.html">Limits</A> <B> Up:</B> <A NAME="tex2html931" HREF="node49.html">API</A> <B> Previous:</B> <A NAME="tex2html925" HREF="node53.html">Error handling</A> <B> <A NAME="tex2html933" HREF="node1.html">Contents</A></B> <BR> <BR></DIV> <!--End of Navigation Panel--> <H3><A NAME="SECTION00073500000000000000"> Engine structure</A> </H3> When all required databases are loaded you should prepare the detection engine by calling <code>cl_engine_compile()</code>. In case of failure you should still free the memory allocated to the engine with <code>cl_engine_free()</code>: <PRE> int cl_engine_compile(struct cl_engine *engine); </PRE> In our example: <PRE> if((ret = cl_engine_compile(engine)) != CL_SUCCESS) { printf("cl_engine_compile() error: %s\n", cl_strerror(ret)); cl_engine_free(engine); return 1; } </PRE> <P> <BR><HR> <ADDRESS> Cisco 2018-02-01 </ADDRESS> </BODY> </HTML>