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// +build ignore
package main
import (
"crypto/tls"
"log"
"time"
"git.sr.ht/~adnano/gmi"
)
func main() {
var server gmi.Server
if err := server.CertificateStore.Load("/var/lib/gemini/certs"); err != nil {
log.Fatal(err)
}
server.GetCertificate = func(hostname string, store *gmi.CertificateStore) *tls.Certificate {
cert, err := store.Lookup(hostname)
if err != nil {
switch err {
case gmi.ErrCertificateExpired:
log.Print("Old certificate expired, creating new one")
// Generate a new certificate if the old one is expired.
crt, key, err := gmi.NewRawCertificate(hostname, time.Minute)
if err != nil {
// Failed to generate new certificate, abort
return nil
}
// Store and return the new certificate
err = writeX509KeyPair("/var/lib/gemini/certs/"+hostname, crt, key)
if err != nil {
return nil
}
newCert, err := tls.X509KeyPair(crt, key)
if err != nil {
return nil
}
store.Add(hostname, newCert)
return &newCert
}
}
return cert
}
var mux gmi.ServeMux
mux.Handle("/", gmi.FileServer(gmi.Dir("/var/www")))
server.Handle("localhost", &mux)
if err := server.ListenAndServe(); err != nil {
log.Fatal(err)
}
}
// writeX509KeyPair writes the provided certificate and private key
// to path.crt and path.key respectively.
func writeX509KeyPair(path string, crt, key []byte) error {
// Write the certificate
crtPath := path + ".crt"
crtOut, err := os.OpenFile(crtPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
if _, err := crtOut.Write(crt); err != nil {
return err
}
// Write the private key
keyPath := path + ".key"
keyOut, err := os.OpenFile(keyPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
if _, err := keyOut.Write(key); err != nil {
return err
}
return nil
}
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