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matterbridge/vendor/github.com/mattermost/logr/v2/targets/utils.go
2021-10-16 23:23:24 +02:00

34 lines
781 B
Go

package targets
import (
"crypto/x509"
"encoding/base64"
"errors"
"io/ioutil"
)
// GetCertPool returns a x509.CertPool containing the cert(s)
// from `cert`, which can be a path to a .pem or .crt file,
// or a base64 encoded cert.
func GetCertPool(cert string) (*x509.CertPool, error) {
if cert == "" {
return nil, errors.New("no cert provided")
}
// first treat as a file and try to read.
serverCert, err := ioutil.ReadFile(cert)
if err != nil {
// maybe it's a base64 encoded cert
serverCert, err = base64.StdEncoding.DecodeString(cert)
if err != nil {
return nil, errors.New("cert cannot be read")
}
}
pool := x509.NewCertPool()
if ok := pool.AppendCertsFromPEM(serverCert); ok {
return pool, nil
}
return nil, errors.New("cannot parse cert")
}