80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
// +build ignore
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package main
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import (
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"crypto"
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"io"
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"log"
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"os"
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"time"
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"git.sr.ht/~adnano/go-gemini"
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)
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func main() {
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var server gemini.Server
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if err := server.Certificates.Load("/var/lib/gemini/certs"); err != nil {
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log.Fatal(err)
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}
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server.CreateCertificate = func(hostname string) (tls.Certificate, error) {
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fmt.Println("Generating certificate for", hostname)
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cert, err := gemini.CreateCertificate(gemini.CertificateOptions{
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DNSNames: []string{hostname},
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Duration: time.Minute, // for testing purposes
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})
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if err == nil {
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// Write the new certificate to disk
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err = writeCertificate("/var/lib/gemini/certs/"+hostname, cert)
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}
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return cert, err
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}
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var mux gemini.ServeMux
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mux.Handle("/", gemini.FileServer(gemini.Dir("/var/www")))
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server.Register("localhost", &mux)
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if err := server.ListenAndServe(); err != nil {
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log.Fatal(err)
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}
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}
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// writeCertificate writes the provided certificate and private key
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// to path.crt and path.key respectively.
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func writeCertificate(path string, cert tls.Certificate) error {
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// Write the certificate
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crtPath := path + ".crt"
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crtOut, err := os.OpenFile(crtPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
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if err != nil {
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return err
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}
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if err := marshalX509Certificate(crtOut, cert.Leaf.Raw); err != nil {
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return err
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}
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// Write the private key
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keyPath := path + ".key"
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keyOut, err := os.OpenFile(keyPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
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if err != nil {
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return err
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}
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return marshalPrivateKey(keyOut, cert.PrivateKey)
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}
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// marshalX509Certificate writes a PEM-encoded version of the given certificate.
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func marshalX509Certificate(w io.Writer, cert []byte) error {
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return pem.Encode(w, &pem.Block{Type: "CERTIFICATE", Bytes: cert})
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}
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// marshalPrivateKey writes a PEM-encoded version of the given private key.
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func marshalPrivateKey(w io.Writer, priv crypto.PrivateKey) error {
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privBytes, err := x509.MarshalPKCS8PrivateKey(priv)
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if err != nil {
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return err
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}
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return pem.Encode(w, &pem.Block{Type: "PRIVATE KEY", Bytes: privBytes})
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}
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