ksgi

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digraph {
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	node [shape="ellipse"; width="0"; height="0"; margin="0.05,0.05"];
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	edge [arrowsize="0.5";];
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	subgraph cluster0 {
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		color="black";
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		client [label="application logic"];
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		subgraph cluster1 {
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			parser [shape="record"; label="{ HTTP parser | input validator }"];
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			color="red";
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			label="sandboxed child";
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			labelloc="b";
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		}
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		label="CGI client";
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	}
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	evil [label="CGI server"];
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	parser -> client [label="validated pairs"];
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	evil -> parser [label="CGI"];
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	client -> evil [label="HTTP"];
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}
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