func (l *Logger) getRoots() (*x509.CertPool, error) {
rootsJSON, err := l.client.Get(l.url + "/ct/v1/get-roots")
if err != nil {
return nil, fmt.Errorf("can't get roots from %s: %s", l.url, err)
}
defer rootsJSON.Body.Close()
j, err := ioutil.ReadAll(rootsJSON.Body)
if err != nil {
return nil, fmt.Errorf("can't read body from %s: %s", l.url, err)
}
if rootsJSON.StatusCode != 200 {
return nil, fmt.Errorf("can't deal with status other than 200 from %s: %d\nbody: %s", l.url, rootsJSON.StatusCode, string(j))
}
type Certificates struct {
Certificates [][]byte
}
var certs Certificates
err = json.Unmarshal(j, &certs)
if err != nil {
return nil, fmt.Errorf("can't parse json (%s) from %s: %s", err, l.url, j)
}
ret := x509.NewCertPool()
for i := 0; i < len(certs.Certificates); i++ {
r, err := x509.ParseCertificate(certs.Certificates[i])
switch err.(type) {
case nil, x509.NonFatalErrors:
// ignore
default:
return nil, fmt.Errorf("can't parse certificate from %s: %s %#v", l.url, err, certs.Certificates[i])
}
ret.AddCert(r)
}
return ret, nil
}
func setUpFix(t *testing.T, i int, ft *fixTest) *toFix {
// Create & populate toFix to test from fixTest info
fix := &toFix{
cert: GetTestCertificateFromPEM(t, ft.cert),
chain: newDedupedChain(extractTestChain(t, i, ft.chain)),
roots: extractTestRoots(t, i, ft.roots),
cache: newURLCache(&http.Client{Transport: &testRoundTripper{}}, false),
}
intermediates := x509.NewCertPool()
for j, cert := range ft.chain {
ok := intermediates.AppendCertsFromPEM([]byte(cert))
if !ok {
t.Errorf("#%d: Failed to parse intermediate #%d", i, j)
}
}
fix.opts = &x509.VerifyOptions{
Intermediates: intermediates,
Roots: fix.roots,
DisableTimeChecks: true,
KeyUsages: []x509.ExtKeyUsage{x509.ExtKeyUsageAny},
}
return fix
}
func extractTestRoots(t *testing.T, i int, testRoots []string) *x509.CertPool {
roots := x509.NewCertPool()
for j, cert := range testRoots {
ok := roots.AppendCertsFromPEM([]byte(cert))
if !ok {
t.Errorf("#%d: Failed to parse root #%d", i, j)
}
}
return roots
}
func (fix *toFix) handleChain() ([][]*x509.Certificate, []*FixError) {
intermediates := x509.NewCertPool()
for _, c := range fix.chain.certs {
intermediates.AddCert(c)
}
fix.opts = &x509.VerifyOptions{
Intermediates: intermediates,
Roots: fix.roots,
DisableTimeChecks: true,
KeyUsages: []x509.ExtKeyUsage{x509.ExtKeyUsageAny},
}
var retferrs []*FixError
chains, ferrs := fix.constructChain()
if ferrs != nil {
retferrs = append(retferrs, ferrs...)
chains, ferrs = fix.fixChain()
if ferrs != nil {
retferrs = append(retferrs, ferrs...)
}
}
return chains, retferrs
}
func ExampleCertificate_Verify() {
// Verifying with a custom list of root certificates.
const rootPEM = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`
const certPEM = `
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----`
// First, create the set of root certificates. For this example we only
// have one. It's also possible to omit this in order to use the
// default root set of the current operating system.
roots := x509.NewCertPool()
ok := roots.AppendCertsFromPEM([]byte(rootPEM))
if !ok {
panic("failed to parse root certificate")
}
block, _ := pem.Decode([]byte(certPEM))
if block == nil {
panic("failed to parse certificate PEM")
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
panic("failed to parse certificate: " + err.Error())
}
opts := x509.VerifyOptions{
DNSName: "mail.google.com",
Roots: roots,
}
if _, err := cert.Verify(opts); err != nil {
panic("failed to verify certificate: " + err.Error())
}
}