antispam

This library currently provides only very simple means to filter spam messages. It was broken out to a separate project so that it can be shared between different projects:

• VibeNews NTTP server and web forum
• VibeLog embeddable blog engine
• Diskuto embeddable comment engine

Example usage

ìmport antispam.antispam;
import vibe.data.json : parseJsonString;
import std.algorithm.comparison : among;

void main()
{
	auto config = parseJsonString(
		`[
			{"filter": "bayes"},
			{"filter": "blacklist",
				"settings": {
					"ips": ["124.51.45.1", "41.23.11.5"]
				}
			}
		]`);

	auto antispam = new AntispamState;
	antispam.loadConfig(config);

	AntispamMessage msg;
	msg.headers["Subject"] = "8uy CH34P V14GR4!!11";
	msg.message = cast(const(ubyte)[])"Just look here: http://bestdrugdealz.c0m";
	msg.peerAddress = ["123.52.433.1", "vps12315.some.provider.n3t"];

	antispam.filterMessage!(
		(status) {
			if (status.among(SpamAction.revoke, SpamAction.block))
				throw new Exception("Your message has been rejected!");
			// otherwise store message...
		},
		(async_status) {
			if (async_status.among!(SpamAction.revoke, SpamAction.block)) {
				// Flag or delete the stored message.
			}

			// It could also theoretically happen here that async_status is amnesty
			// or pass, so that a message that was already rejected in the first
			// phase would be accepted in retrospective. You'll have to decides on
			// a per-application basis if it makes sense to support this case, or
			// if immediate rejections always have precedence.
		}
	)(msg);
}