This patch import suri-graphite into suricata contrib directory.
This script reads counters from suricata unix socket and send them
to a Graphite graphing server.
Use test macro instead of direct access to action field.
This patch has been obtained by using the following
spatch file:
@@
Packet *p;
expression E;
@@
- p->action & E
+ TEST_PACKET_ACTION(p, E)
The action field in Packet structure should not be accessed
directly as the tunneled packet needs to update the root packet
and not the initial packet.
This patch is fixing issue #819 where suricata was not able to
drop fragmented packets in AF_PACKET IPS mode. It also fixes
drop capability for tunneled packets.
Bug emanates from byte_test, byte_jump and byte_extract keyword being
unable to handle negative offsets when the inspection pointer is at the
end of the buffer.
Now depth is kept in mind when we inspect chunks in client/server body.
This takes care of FPs originating from inspecting subsequent chunks that
match with depth, but shouldn't.
Add flowint lua functions for incrementing and decrementing flowints.
First use creates the var and inits to 0. So a call:
a = ScFlowintIncr(0)
Results in a == 1.
If the var reached UINT_MAX (2^32), it's not further incremented. If the
var reaches 0 it's not decremented further.
Calling ScFlowintDecr on a uninitialized var will init it to 0.
Example script:
function init (args)
local needs = {}
needs["http.request_headers"] = tostring(true)
needs["flowint"] = {"cnt_incr"}
return needs
end
function match(args)
a = ScFlowintIncr(0);
if a == 23 then
return 1
end
return 0
end
return 0
This script matches the 23rd time it's invoked on a flow.
Expose ScFlowintGet and ScFlowintSet functions to luajit. These set
flowints in real time, regardless of rule and/or script match.
Example:
function init (args)
local needs = {}
needs["http.request_headers"] = tostring(true)
needs["flowint"] = {"cnt"}
return needs
end
function match(args)
a = ScFlowintGet(0);
if a then
ScFlowintSet(0, a + 1)
else
ScFlowintSet(0, 1)
end
a = ScFlowintGet(0);
if a == 23 then
return 1
end
return 0
end
return 0
Script's init call first registers "cnt" at id 0, then 0 is used to use
this var.
sigs(priority wise) inside staging.
Previously we would assign signums before sig ordering, and hence the
order didn't actually reflect the order of the sig in the
sig_list(assuming sig reordering changed the sig_list). Staging would
use the old sig_nums to decide the priority of sigs.
2. Fix sig ordering for flowvar, flowbits, flowint, pktvar sigs. We have
introduced a new priority to treat sigs with set + read as lower
priority compared to set only sigs.
3. Previously we treated sigs with a "priority(keyword)" > another sig's
priority, as a sig with greater priority than the later. We have
reversed it. Now the sig priority ordering is 1,2,.etc. Updated
sigordering unittests to reflect the same.
Improved accuracy, improved performance. Performance improvement
noticeable with http heavy traffic and ruleset.
A lot of other cosmetic changes carried out as well. Wrappers introduced
for a lot of app layer functions.
Failing dce unittests disabled. Will be reintroduced in the updated dce
engine.
Cross transaction matching taken care of. FPs emanating from these
matches have now disappeared. Double inspection of transactions taken
care of as well.
The memset() inside PACKET_INITIALIZE() is redundant in some cases and
it is cleaner to do as part of the memory allocation. This simplifies
changes for integrating Tilera mPIPE support because the size of memory
cleared in that case is different from SIZE_OF_PACKET.
For the cases where Packets are directly allocated and then call
PACKET_INITIALIZE() without memset() first, this patch adds memset() calls.
A further change would use GetPacketFromAlloc() directly.
Anoop Saldanha
Anoop Saldanha
Eric Leblond
Victor Julien
Phil Schroeder
Ken Steele