| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package x509check |
| 4 | |
| 5 | import ( |
| 6 | "crypto/x509" |
| 7 | "fmt" |
| 8 | "time" |
| 9 | |
| 10 | "github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/oldmetrix" |
| 11 | |
| 12 | "github.com/cloudflare/cfssl/revoke" |
| 13 | ) |
| 14 | |
| 15 | func (c *Collector) collect() (map[string]int64, error) { |
| 16 | certs, err := c.prov.certificates() |
| 17 | if err != nil { |
| 18 | return nil, err |
| 19 | } |
| 20 | |
| 21 | if len(certs) == 0 { |
| 22 | return nil, fmt.Errorf("no certificate was provided by '%s'", c.Config.Source) |
| 23 | } |
| 24 | |
| 25 | mx := make(map[string]int64) |
| 26 | |
| 27 | if err := c.collectCertificates(mx, certs); err != nil { |
| 28 | return nil, err |
| 29 | } |
| 30 | |
| 31 | return mx, nil |
| 32 | } |
| 33 | |
| 34 | func (c *Collector) collectCertificates(mx map[string]int64, certs []*x509.Certificate) error { |
| 35 | for i, cert := range certs { |
| 36 | cn := cert.Subject.CommonName |
| 37 | |
| 38 | if !c.seenCerts[cn] { |
| 39 | c.seenCerts[cn] = true |
| 40 | c.addCertCharts(cn, i) |
| 41 | } |
| 42 | |
| 43 | px := fmt.Sprintf("cert_depth%d_", i) |
| 44 | |
| 45 | mx[px+"expiry"] = int64(time.Until(cert.NotAfter).Seconds()) |
| 46 | |
| 47 | if i == 0 && c.CheckRevocation { |
| 48 | func() { |
| 49 | rev, ok, err := revoke.VerifyCertificateError(cert) |
| 50 | if err != nil { |
| 51 | c.Debug(err) |
| 52 | return |
| 53 | } |
| 54 | if !ok { |
| 55 | return |
| 56 | } |
| 57 | mx[px+"revoked"] = oldmetrix.Bool(rev) |
| 58 | mx[px+"not_revoked"] = oldmetrix.Bool(!rev) |
| 59 | }() |
| 60 | } |
| 61 | |
| 62 | if !c.CheckFullChain { |
| 63 | break |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | return nil |
| 68 | } |