1 files changed, 42 insertions, 0 deletions
diff --git a/feed/v3attackcomplexity.go b/feed/v3attackcomplexity.go
new file mode 100644
index 0000000..6e7481c
--- /dev/null
+++ b/feed/v3attackcomplexity.go
@@ -0,0 +1,42 @@
+package feed
+
+//go:generate stringer -linecomment -type=V3AttackComplexity
+
+import (
+  "encoding/json"
+  "fmt"
+)
+
+// CVSS v3 attack complexity
+type V3AttackComplexity byte
+
+const (
+  V3ACLow V3AttackComplexity = iota // LOW
+  V3ACMedium // MEDIUM
+  V3ACHigh // HIGH
+)
+
+// Unmarshal CVSS v3 attack complexity from JSON.
+func (me *V3AttackComplexity) UnmarshalJSON(b []byte) error {
+  // decode string, check for error
+  var s string
+  if err := json.Unmarshal(b, &s); err != nil {
+    return err
+  }
+
+  // check value
+  switch s {
+  case "LOW":
+    *me = V3ACLow
+  case "MEDIUM":
+    *me = V3ACMedium
+  case "HIGH":
+    *me = V3ACHigh
+  default:
+    // return error
+    return fmt.Errorf("unknown CVSS v3 attack complexity: %s", s)
+  }
+
+  // return success
+  return nil
+}