89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Package gmi implements the Gemini protocol
|
|
package gmi
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"crypto/x509"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
// Status codes.
|
|
const (
|
|
StatusInput = 10
|
|
StatusSensitiveInput = 11
|
|
StatusSuccess = 20
|
|
StatusRedirect = 30
|
|
StatusRedirectPermanent = 31
|
|
StatusTemporaryFailure = 40
|
|
StatusServerUnavailable = 41
|
|
StatusCGIError = 42
|
|
StatusProxyError = 43
|
|
StatusSlowDown = 44
|
|
StatusPermanentFailure = 50
|
|
StatusNotFound = 51
|
|
StatusGone = 52
|
|
StatusProxyRequestRefused = 53
|
|
StatusBadRequest = 59
|
|
StatusCertificateRequired = 60
|
|
StatusCertificateNotAuthorized = 61
|
|
StatusCertificateNotValid = 62
|
|
)
|
|
|
|
// Status code categories.
|
|
const (
|
|
StatusClassInput = 1
|
|
StatusClassSuccess = 2
|
|
StatusClassRedirect = 3
|
|
StatusClassTemporaryFailure = 4
|
|
StatusClassPermanentFailure = 5
|
|
StatusClassCertificateRequired = 6
|
|
)
|
|
|
|
// DefaultClient is the default client. It is used by Send.
|
|
//
|
|
// On the first request, DefaultClient will load the default list of known hosts.
|
|
var DefaultClient = &Client{}
|
|
|
|
var (
|
|
crlf = []byte("\r\n")
|
|
)
|
|
|
|
func init() {
|
|
DefaultClient.TrustCertificate = func(hostname string, cert *x509.Certificate, knownHosts *KnownHosts) error {
|
|
// Load the hosts only once. This is so that the hosts don't have to be loaded
|
|
// for those using their own clients.
|
|
setupDefaultClientOnce.Do(setupDefaultClient)
|
|
return knownHosts.Lookup(hostname, cert)
|
|
}
|
|
DefaultClient.GetCertificate = func(hostname string, store CertificateStore) *tls.Certificate {
|
|
// If the certificate is in the store, return it
|
|
if cert, ok := store[hostname]; ok {
|
|
return cert
|
|
}
|
|
// Otherwise, generate a certificate
|
|
duration := time.Hour
|
|
cert, err := NewCertificate(hostname, duration)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
// Store and return the certificate
|
|
store[hostname] = &cert
|
|
return &cert
|
|
}
|
|
}
|
|
|
|
var setupDefaultClientOnce sync.Once
|
|
|
|
func setupDefaultClient() {
|
|
DefaultClient.CertificateStore = CertificateStore{}
|
|
DefaultClient.KnownHosts.Load()
|
|
}
|
|
|
|
// Send sends a Gemini request and returns a Gemini response.
|
|
//
|
|
// Send is a wrapper around DefaultClient.Send.
|
|
func Send(req *Request) (*Response, error) {
|
|
return DefaultClient.Send(req)
|
|
}
|