go-gemini/gemini.go

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package gmi
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import (
"crypto/tls"
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"crypto/x509"
"sync"
"time"
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)
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// Status codes.
const (
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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
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)
// Status code categories.
const (
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StatusClassInput = 1
StatusClassSuccess = 2
StatusClassRedirect = 3
StatusClassTemporaryFailure = 4
StatusClassPermanentFailure = 5
StatusClassCertificateRequired = 6
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)
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// DefaultClient is the default client. It is used by Send.
//
// On the first request, DefaultClient will load the default list of known hosts.
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var DefaultClient = &Client{}
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var (
crlf = []byte("\r\n")
)
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func init() {
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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)
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}
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DefaultClient.GetCertificate = func(hostname string, store *CertificateStore) *tls.Certificate {
// If the certificate is in the store, return it
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if cert, err := store.Lookup(hostname); err == nil {
return cert
}
// Otherwise, generate a certificate
duration := time.Hour
cert, err := NewCertificate(hostname, duration)
if err != nil {
return nil
}
// Store and return the certificate
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store.Add(hostname, cert)
return &cert
}
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}
var setupDefaultClientOnce sync.Once
func setupDefaultClient() {
DefaultClient.KnownHosts.Load()
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}
// 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)
}