Multiphase: chains further support, ARGS split, CRS like tests

http/middleware_test.go

@@ -148,14 +148,14 @@ func createMultipartRequest(t *testing.T) *http.Request {
 }
 
 // from issue https://github.com/corazawaf/coraza/issues/159 @zpeasystart
-func TestDirectiveSecAuditLog(t *testing.T) {
+func TestChainEvaluation(t *testing.T) {
 	waf := corazawaf.NewWAF()
 	waf.RequestBodyAccess = true
 	if err := seclang.NewParser(waf).FromString(`
 	SecRule REQUEST_FILENAME "@unconditionalMatch" "id:100, phase:2, t:none, log, setvar:'tx.count=+1',chain"
-	SecRule ARGS:username "@unconditionalMatch" "t:none, setvar:'tx.count=+2',chain"
-	SecRule ARGS:password "@unconditionalMatch" "t:none, setvar:'tx.count=+3'"
-		`); err != nil {
+		SecRule ARGS_POST:username "@unconditionalMatch" "t:none, setvar:'tx.count=+2',chain"
+			SecRule ARGS_POST:password "@unconditionalMatch" "t:none, setvar:'tx.count=+3'"
+	`); err != nil {
 		t.Fatal(err)
 	}
 	if err := waf.Validate(); err != nil {

internal/corazarules/rule_match.go

@@ -25,6 +25,9 @@ type MatchData struct {
 	Message_ string
 	// Macro expanded logdata
 	Data_ string
+	// Keeps track of the chain depth in which the data matched.
+	// Multiphase specific field
+	ChainLevel_ int
 }
 
 func (m *MatchData) Variable() variables.RuleVariable {
@@ -47,6 +50,10 @@ func (m *MatchData) Data() string {
 	return m.Data_
 }
 
+func (m *MatchData) ChainLevel() int {
+	return m.ChainLevel_
+}
+
 // MatchedRule contains a list of macro expanded messages,
 // matched variables and a pointer to the rule
 type MatchedRule struct {