diff options
-rw-r--r-- | internal/feed/feed.go | 60 | ||||
-rw-r--r-- | internal/feed/v3attackvector.go | 46 | ||||
-rw-r--r-- | internal/feed/v3attackvector_string.go | 26 | ||||
-rw-r--r-- | internal/feed/v3attackvector_test.go | 81 |
4 files changed, 168 insertions, 45 deletions
diff --git a/internal/feed/feed.go b/internal/feed/feed.go index 93a4a8f..a04c3ce 100644 --- a/internal/feed/feed.go +++ b/internal/feed/feed.go @@ -3,16 +3,10 @@ package feed import ( "encoding/json" "fmt" - // "strconv" ) const ( - AdjacentNetwork = iota // Adjacent Network attack vector. - Network // Network attack vector. - Local // Local attack vector. - Physical // Physical attack vector. - - None // no priv req/user interaction + None = iota // no priv req/user interaction Low // low complexity/priv req Medium // medium complexity/priv req High // high complexity/priv req @@ -35,36 +29,6 @@ const ( // TODO: parse cpe -// CVSS attack vector -type AttackVector int - -// Unmarshal CVSS attack vector from JSON. -func (me *AttackVector) 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 = AdjacentNetwork - case "LOCAL": - *me = Local - case "NETWORK": - *me = Network - case "PHYSICAL": - *me = Physical - default: - // return error - return fmt.Errorf("unknown attack vector: %s", s) - } - - // return success - return nil -} - // CVSS attack complexity type AttackComplexity int @@ -258,10 +222,16 @@ func (me *Severity) UnmarshalJSON(b []byte) error { return nil } -type AccessVector int +type V2AccessVector byte + +const ( + V2AVAdjacentNetwork V2AccessVector = iota + V2AVLocal + V2AVNetwork +) // Unmarshal CVSS V2 access vector from JSON. -func (me *AccessVector) UnmarshalJSON(b []byte) error { +func (me *V2AccessVector) UnmarshalJSON(b []byte) error { // decode string, check for error var s string if err := json.Unmarshal(b, &s); err != nil { @@ -271,14 +241,14 @@ func (me *AccessVector) UnmarshalJSON(b []byte) error { // check value switch s { case "ADJACENT_NETWORK": - *me = AdjacentNetwork + *me = V2AVAdjacentNetwork case "LOCAL": - *me = Local + *me = V2AVLocal case "NETWORK": - *me = Network + *me = V2AVNetwork default: // return error - return fmt.Errorf("unknown CVSS access vector: %s", s) + return fmt.Errorf("unknown CVSS v2 access vector: %s", s) } // return success @@ -511,7 +481,7 @@ type CvssV3 struct { VectorString string `json:"vectorString"` // attack vector - AttackVector AttackVector `json:"attackVector"` + AttackVector V3AttackVector `json:"attackVector"` // attack complexity AttackComplexity AttackComplexity `json:"attackComplexity"` @@ -554,7 +524,7 @@ type CvssV2 struct { VectorString string `json:"vectorString"` // attack vector - AccessVector AccessVector `json:"accessVector"` + AccessVector V2AccessVector `json:"accessVector"` // attack complexity AccessComplexity AccessComplexity `json:"accessComplexity"` diff --git a/internal/feed/v3attackvector.go b/internal/feed/v3attackvector.go new file mode 100644 index 0000000..ecc309a --- /dev/null +++ b/internal/feed/v3attackvector.go @@ -0,0 +1,46 @@ +package feed + +//go:generate stringer -linecomment -type=V3AttackVector + +import ( + "encoding/json" + "fmt" +) + +// CVSS v3 attack vector. +type V3AttackVector byte + +const ( + V3AVAdjacentNetwork V3AttackVector = iota // ADJACENT_NETWORK + V3AVNetwork // NETWORK + V3AVLocal // LOCAL + V3AVPhysical // PHYSICAL +) + +// Unmarshal CVSS v3 attack vector from JSON. +func (me *V3AttackVector) 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 = V3AVAdjacentNetwork + case "LOCAL": + *me = V3AVLocal + case "NETWORK": + *me = V3AVNetwork + case "PHYSICAL": + *me = V3AVPhysical + default: + // return error + return fmt.Errorf("unknown CVSS v3 attack vector: %s", s) + } + + // return success + return nil +} + diff --git a/internal/feed/v3attackvector_string.go b/internal/feed/v3attackvector_string.go new file mode 100644 index 0000000..277520f --- /dev/null +++ b/internal/feed/v3attackvector_string.go @@ -0,0 +1,26 @@ +// Code generated by "stringer -linecomment -type=V3AttackVector"; DO NOT EDIT. + +package feed + +import "strconv" + +func _() { + // An "invalid array index" compiler error signifies that the constant values have changed. + // Re-run the stringer command to generate them again. + var x [1]struct{} + _ = x[V3AVAdjacentNetwork-0] + _ = x[V3AVNetwork-1] + _ = x[V3AVLocal-2] + _ = x[V3AVPhysical-3] +} + +const _V3AttackVector_name = "ADJACENT_NETWORKNETWORKLOCALPHYSICAL" + +var _V3AttackVector_index = [...]uint8{0, 16, 23, 28, 36} + +func (i V3AttackVector) String() string { + if i >= V3AttackVector(len(_V3AttackVector_index)-1) { + return "V3AttackVector(" + strconv.FormatInt(int64(i), 10) + ")" + } + return _V3AttackVector_name[_V3AttackVector_index[i]:_V3AttackVector_index[i+1]] +} diff --git a/internal/feed/v3attackvector_test.go b/internal/feed/v3attackvector_test.go new file mode 100644 index 0000000..251cfd4 --- /dev/null +++ b/internal/feed/v3attackvector_test.go @@ -0,0 +1,81 @@ +package feed + +import ( + "encoding/json" + "testing" +) + +func TestV3AttackVectorUnmarshalInvalidData(t *testing.T) { + test := []byte(`{}`) + var val V3AttackVector + + if err := json.Unmarshal(test, &val); err == nil { + t.Errorf("got \"%s\", exp error", val) + } +} + +func TestV3AttackVectorUnmarshalUnknown(t *testing.T) { + test := []byte(`"foo"`) + exp := "unknown CVSS v3 attack vector: foo" + var val V3AttackVector + + err := json.Unmarshal(test, &val) + if err == nil { + t.Errorf("got \"%s\", exp error", val) + return + } + + if err.Error() != exp { + t.Errorf("got \"%s\", exp \"%s\"", err.Error(), exp) + } +} + +func TestV3AttackVectorUnmarshalValid(t *testing.T) { + tests := []struct { + val string + exp V3AttackVector + } { + { "\"ADJACENT_NETWORK\"", V3AVAdjacentNetwork }, + { "\"LOCAL\"", V3AVLocal }, + { "\"NETWORK\"", V3AVNetwork }, + { "\"PHYSICAL\"", V3AVPhysical }, + } + + for _, test := range(tests) { + t.Run(test.val, func(t *testing.T) { + var got V3AttackVector + if err := json.Unmarshal([]byte(test.val), &got); err != nil { + t.Error(err) + return + } + + if got != test.exp { + t.Errorf("got \"%s\", exp \"%s\"", got, test.exp) + } + }) + } +} + +func TestV3AttackVectorString(t *testing.T) { + tests := []struct { + val V3AttackVector + exp string + } { + { V3AVAdjacentNetwork, "ADJACENT_NETWORK" }, + { V3AVLocal, "LOCAL" }, + { V3AVNetwork, "NETWORK" }, + { V3AVPhysical, "PHYSICAL" }, + + { V3AttackVector(255), "V3AttackVector(255)" }, + } + + for _, test := range(tests) { + t.Run(test.exp, func(t *testing.T) { + got := test.val.String() + + if got != test.exp { + t.Errorf("got \"%s\", exp \"%s\"", got, test.exp) + } + }) + } +} |