1 files changed, 39 insertions, 0 deletions
diff --git a/projects/cel-go/fuzz_eval.go b/projects/cel-go/fuzz_eval.go
new file mode 100644
index 000000000..8b2764c60
--- /dev/null
+++ b/projects/cel-go/fuzz_eval.go
@@ -0,0 +1,39 @@
+package cel
+
+import (
+	"github.com/golang/protobuf/proto"
+
+	"github.com/google/cel-go/checker/decls"
+	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
+)
+
+func FuzzEval(data []byte) int {
+	gen := &FuzzVariables{}
+	err := proto.Unmarshal(data, gen)
+	if err != nil {
+		panic("Failed to unmarshal LPM generated variables")
+	}
+
+	declares := make([]*exprpb.Decl, 0, len(gen.Inputs))
+	for k, _ := range gen.Inputs {
+		declares = append(declares, decls.NewVar(k, decls.String))
+	}
+	env, err := NewEnv(Declarations(declares...))
+	if err != nil {
+		panic("impossible to create env")
+	}
+
+	ast, issues := env.Compile(gen.Expr)
+	if issues != nil && issues.Err() != nil {
+		return 0
+	}
+	prg, err := env.Program(ast)
+	if err != nil {
+		return 0
+	}
+	//fmt.Printf("loltry %#+v\n", gen)
+
+	_, _, err = prg.Eval(gen.Inputs)
+
+	return 1
+}