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|
package cvss
import (
"regexp"
"strings"
)
// CVSS v3.1 prefix
var v31Prefix = "CVSS:3.1/"
// CVSS 3.1 vector.
type v31Vector []v3Metric
// Convert vector to string
func (v v31Vector) String() string {
// convert to slice of metrics
metrics := []v3Metric(v)
// build vector
r := make([]string, len(metrics))
for i, m := range(metrics) {
r[i] = m.String()
}
// build and return string
return v31Prefix + strings.Join(r, "/")
}
// Return CVSS version.
func (v31Vector) Version() Version {
return V31
}
// Return metrics in this vector.
func (v v31Vector) Metrics() []Metric {
// build slice of metrics
r := make([]Metric, len(v))
for i, m := range(v) {
r[i] = m
}
// return result
return r
}
// create CVSS 3.1 vector from string.
func newV31Vector(s string) (v31Vector, error) {
// strip version prefix, split into metric strings
strs := strings.Split(s[len(v31Prefix):], "/")
r := make([]v3Metric, len(strs))
// build results
for i, ms := range(strs) {
// get metric from string
m, err := getV3Metric(V31, ms)
if err != nil {
return nil, err
}
// add to results
r[i] = m
}
// return result
return v31Vector(r), nil
}
// // Unmarshal CVSS 3.1 vector from JSON string.
// func (me *v31Vector) UnmarshalJSON(b []byte) error {
// // decode string, check for error
// var s string
// if err := json.Unmarshal(b, &s); err != nil {
// return err
// }
//
// // parse vector, check for error
// r, err := newV31Vector(s)
// if err != nil {
// return err
// }
//
// // save result, return success
// *me = r
// return nil
// }
var v31VecRe = regexp.MustCompile(
"\\ACVSS:3\\.1(?:/(?:" + strings.Join([]string {
"(?:AV:[NALP])",
"(?:AC:[LH])",
"(?:PR:[NLH])",
"(?:UI:[NR])",
"(?:S:[UC])",
"(?:C:[HLN])",
"(?:I:[HLN])",
"(?:A:[HLN])",
"(?:E:[XHFPU])",
"(?:RL:[XUWTO])",
"(?:RC:[XCRU])",
"(?:CR:[XHML])",
"(?:IR:[XHML])",
"(?:AR:[XHML])",
"(?:MAV:[XNALP])",
"(?:MAC:[XLH])",
"(?:MPR:[XNLH])",
"(?:MUI:[XNR])",
"(?:MS:[XUC])",
"(?:MC:[XNLH])",
"(?:MI:[XNLH])",
"(?:MA:[XNLH])",
}, "|") + "))+\\z",
)
// Is the given string a CVSSv3.1 vector string?
func isV31VectorString(s string) bool {
return (len(s) > len(v31Prefix)) &&
(s[:len(v31Prefix)] == v31Prefix) &&
v31VecRe.MatchString(s)
}
|
