142 lines
2.9 KiB
Go
142 lines
2.9 KiB
Go
package server
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"errors"
|
|
"net"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"time"
|
|
|
|
"git.xeserv.us/xena/route/database"
|
|
"git.xeserv.us/xena/route/lib/tun2"
|
|
proto "git.xeserv.us/xena/route/proto"
|
|
"github.com/mtneug/pkg/ulid"
|
|
"golang.org/x/crypto/acme/autocert"
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
// RPC constants
|
|
const (
|
|
RPCPort uint16 = 39453
|
|
)
|
|
|
|
// Server is the main server type
|
|
type Server struct {
|
|
cfg *Config
|
|
db database.Storage
|
|
ts *tun2.Server
|
|
|
|
*autocert.Manager
|
|
}
|
|
|
|
// Config configures Server
|
|
type Config struct {
|
|
BoltDBPath string `env:"BOLTDB_PATH,required"`
|
|
|
|
WebAddr string `env:"WEB_ADDR,required"`
|
|
SSLAddr string `env:"SSL_ADDR,required"`
|
|
BackendTCPAddr string `env:"BACKEND_TCP_ADDR,required"`
|
|
BackendKCPAddr string `env:"BACKEND_KCP_ADDR,required"`
|
|
GRPCAddr string `env:"GRPC_ADDR,required"`
|
|
|
|
DomainSuffix string `env:"DOMAIN_SUFFIX,required"`
|
|
ACMEEmail string `env:"ACME_EMAIL,required"`
|
|
CertKey *[32]byte
|
|
}
|
|
|
|
// New creates a new Server
|
|
func New(cfg Config) (*Server, error) {
|
|
if cfg.CertKey == nil {
|
|
return nil, errors.New("no cert decryption key, can't do anything")
|
|
}
|
|
|
|
db, err := database.NewBoltStorage(cfg.BoltDBPath, cfg.CertKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
m := &autocert.Manager{
|
|
Prompt: autocert.AcceptTOS,
|
|
Cache: database.Cache(db),
|
|
HostPolicy: nil,
|
|
Email: cfg.ACMEEmail,
|
|
}
|
|
|
|
tcfg := &tun2.ServerConfig{
|
|
TCPAddr: cfg.BackendTCPAddr,
|
|
KCPAddr: cfg.BackendKCPAddr,
|
|
TLSConfig: &tls.Config{
|
|
GetCertificate: m.GetCertificate,
|
|
},
|
|
Storage: &storageWrapper{
|
|
Storage: db,
|
|
},
|
|
}
|
|
|
|
ts, err := tun2.NewServer(tcfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
s := &Server{
|
|
cfg: &cfg,
|
|
db: db,
|
|
ts: ts,
|
|
|
|
Manager: m,
|
|
}
|
|
|
|
s.ts = ts
|
|
go ts.ListenAndServe()
|
|
|
|
var gs *grpc.Server
|
|
|
|
proto.RegisterRoutesServer(gs, &Route{Server: s})
|
|
proto.RegisterTokensServer(gs, &Token{Server: s})
|
|
|
|
l, err := net.Listen("tcp", cfg.GRPCAddr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
go gs.Serve(l)
|
|
|
|
return s, nil
|
|
}
|
|
|
|
// Director removes headers that are typically stripped off at request ingress.
|
|
func (s *Server) Director(r *http.Request) {
|
|
r.Header.Del("X-Forwarded-For")
|
|
r.Header.Del("X-Client-Ip")
|
|
}
|
|
|
|
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
if r.Header.Get("X-Tor2web") != "" {
|
|
http.Error(w, "tor2web proxy use is not allowed", 400)
|
|
return
|
|
}
|
|
|
|
host, _, err := net.SplitHostPort(r.RemoteAddr)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), 500)
|
|
return
|
|
}
|
|
r.Header.Set("X-Remote-Ip", host)
|
|
r.Header.Set("X-Request-Ingress", time.Now().Format(time.RFC3339))
|
|
|
|
rid := ulid.New().String()
|
|
r.Header.Set("X-Request-Id", rid)
|
|
w.Header().Set("X-Request-Id", rid)
|
|
|
|
// http://www.gnuterrypratchett.com/
|
|
w.Header().Set("X-Clacks-Overhead", "GNU Ashlynn")
|
|
|
|
rp := &httputil.ReverseProxy{
|
|
Director: s.Director,
|
|
Transport: s.ts,
|
|
FlushInterval: 1 * time.Second,
|
|
}
|
|
|
|
rp.ServeHTTP(w, r)
|
|
}
|