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package goxy
import (
"crypto/tls"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/url"
"os"
)
// Routes defines a set of routes including correspondent TLS certificates
type Routes map[string]Route
type Route struct {
Host, Upstream string
Cert, Key []byte
certificate *tls.Certificate
}
func (r Route) String() string {
if r.certificate != nil {
return fmt.Sprintf("%v → %v with TLS", r.Host, r.Upstream)
}
return fmt.Sprintf("%v → %v", r.Host, r.Upstream)
}
// GetCertificate returns certificate for SNI negotiation
func (r Routes) GetCertificate(h *tls.ClientHelloInfo) (*tls.Certificate, error) {
host := h.ServerName
if v, ok := r[host]; ok && v.certificate != nil {
return v.certificate, nil
}
// HACK search for certs without port
for k, v := range r {
if k[:len(host)] == host {
return v.certificate, nil
}
}
return nil, errors.New("no cert for " + host)
}
func (r Routes) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
for _, v := range r {
fmt.Fprintln(w, v)
}
}
func (r Routes) Save(fname string) error {
fd, err := os.Create(fname)
if err != nil {
return err
}
defer fd.Close()
return json.NewEncoder(fd).Encode(r)
}
func (r *Routes) Load(fname string) error {
fd, err := os.Open(fname)
if err != nil {
return err
}
defer fd.Close()
return json.NewDecoder(fd).Decode(r)
}
func Slug(host string) (string, bool, error) {
h, err := url.Parse(host)
if err != nil {
return "", false, err
}
if h.Path == "" {
h.Path = "/"
}
return h.Host + h.Path, h.Scheme == "https", nil
}
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