internal/feed: add v2accessvector, v2accessvector tests

1 files changed, 42 insertions, 0 deletions

diff --git a/internal/feed/v2accessvector.go b/internal/feed/v2accessvector.go
new file mode 100644
index 0000000..80490c2
--- /dev/null
+++ b/internal/feed/v2accessvector.go
@@ -0,0 +1,42 @@
+package feed
+
+//go:generate stringer -linecomment -type=V2AccessVector
+
+import (
+  "encoding/json"
+  "fmt"
+)
+
+type V2AccessVector byte
+
+const (
+  V2AVAdjacentNetwork V2AccessVector = iota // ADJACENT_NETWORK
+  V2AVLocal // LOCAL
+  V2AVNetwork // NETWORK
+)
+
+// Unmarshal CVSS V2 access vector from JSON.
+func (me *V2AccessVector) 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 "ADJACENT_NETWORK":
+    *me = V2AVAdjacentNetwork
+  case "LOCAL":
+    *me = V2AVLocal
+  case "NETWORK":
+    *me = V2AVNetwork
+  default:
+    // return error
+    return fmt.Errorf("unknown CVSS v2 access vector: %s", s)
+  }
+
+  // return success
+  return nil
+}
+