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Added hook to filter intelligence items.

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This commit is contained in:
Jan Grashoefer 2019-03-24 21:31:48 +01:00
parent b2930a6ec3
commit 3e31f3d554
2 changed files with 16 additions and 5 deletions
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15
scripts/base/frameworks/intel/main.bro
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@ -173,6 +173,14 @@ export {
## be removed. ## be removed.
global item_expired: hook(indicator: string, indicator_type: Type, metas: set[MetaData]); global item_expired: hook(indicator: string, indicator_type: Type, metas: set[MetaData]);
## This hook can be used to filter intelligence items that are about to be
## inserted into the internal data store. In case the hook execution is
## terminated using break, the item will not be (re)added to the internal
## data store.
##
## item: The intel item that should be inserted.
global filter_item: hook(item: Intel::Item);
global log_intel: event(rec: Info); global log_intel: event(rec: Info);
} }
@ -496,8 +504,11 @@ function _insert(item: Item, first_dispatch: bool &default = T)
function insert(item: Item) function insert(item: Item)
{ {
# Insert possibly new item. if ( hook filter_item(item) )
_insert(item, T); {
# Insert possibly new item.
_insert(item, T);
}
} }
# Function to check whether an item is present. # Function to check whether an item is present.

6
testing/btest/Baseline/scripts.base.frameworks.intel.remove-non-existing/output
View file

@ -3,9 +3,9 @@
#empty_field (empty) #empty_field (empty)
#unset_field - #unset_field -
#path reporter #path reporter
#open 2018-02-27-17-25-30 #open 2019-03-24-20-20-10
#fields ts level message location #fields ts level message location
#types time enum string string #types time enum string string
0.000000 Reporter::INFO Tried to remove non-existing item '192.168.1.1' (Intel::ADDR). /home/jgras/devel/bro/scripts/base/frameworks/intel/./main.bro, lines 552-553 0.000000 Reporter::INFO Tried to remove non-existing item '192.168.1.1' (Intel::ADDR). /home/jgras/devel/zeek/scripts/base/frameworks/intel/./main.bro, lines 563-564
0.000000 Reporter::INFO received termination signal (empty) 0.000000 Reporter::INFO received termination signal (empty)
#close 2018-02-27-17-25-30 #close 2019-03-24-20-20-10