MINOR: Add Mod Defender integration as contrib
This is a service that talks SPOE protocol and uses the Mod Defender (a
NAXSI clone) functionality to detect HTTP attacks. It returns a HTTP
status code to indicate whether the request is suspicious or not, based on
NAXSI rules. The value of the returned code can be used in HAProxy rules
to determine if the HTTP request should be blocked/rejected.
diff --git a/contrib/mod_defender/spoa.h b/contrib/mod_defender/spoa.h
new file mode 100644
index 0000000..332f387
--- /dev/null
+++ b/contrib/mod_defender/spoa.h
@@ -0,0 +1,50 @@
+/*
+ * Mod Defender for HAProxy
+ *
+ * Copyright 2017 HAProxy Technologies, Dragan Dosen <ddosen@haproxy.com>
+ *
+ * Based on "A Random IP reputation service acting as a Stream Processing Offload Agent"
+ * Copyright 2016 HAProxy Technologies, Christopher Faulet <cfaulet@haproxy.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 3 of the License, or (at your option) any later version.
+ *
+ */
+#ifndef __SPOA_H__
+#define __SPOA_H__
+
+#include <sys/time.h>
+
+#include <event2/util.h>
+#include <event2/event.h>
+#include <event2/event_struct.h>
+#include <event2/thread.h>
+
+#define LOG(worker, fmt, args...) \
+ do { \
+ struct timeval now; \
+ \
+ gettimeofday(&now, NULL); \
+ fprintf(stderr, "%ld.%06ld [%02d] " fmt "\n", \
+ now.tv_sec, now.tv_usec, (worker)->id, ##args); \
+ } while (0)
+
+struct worker {
+ pthread_t thread;
+ int id;
+ struct event_base *base;
+ struct event *monitor_event;
+
+ struct list engines;
+
+ unsigned int nbclients;
+ struct list clients;
+
+ struct list frames;
+};
+
+extern struct worker null_worker;
+
+#endif /* __SPOA_H__ */