parser-common: recognize events produced by SIGMA checkers

Resolves: https://issues.redhat.com/browse/OSH-539
Closes: #159

Author: kdudka

src/lib/parser-common.hh

@@ -35,7 +35,8 @@
 
 #define RE_EVENT_GCC "(?:(?:(?:fatal|internal|runtime) )?[A-Za-z][A-Za-z0-9_-]+)(?:\\[[^ \\]]+\\])?"
 #define RE_EVENT_PROSPECTOR "(?:[A-Z]+[0-9]+\\[[a-z0-9-]+\\])"
-#define RE_EVENT RE_EVENT_GCC "|" RE_EVENT_PROSPECTOR
+#define RE_EVENT_SIGMA "(?:Sigma (?:main )?event)"
+#define RE_EVENT RE_EVENT_GCC "|" RE_EVENT_PROSPECTOR "|" RE_EVENT_SIGMA
 
 int parse_int(const std::string &, int fallback = 0);
 

tests/csgrep/0119-cov-parser-sigma-args.txt

@@ -0,0 +1 @@
+--mode=json