aboutsummaryrefslogtreecommitdiff
path: root/rpc.go
blob: bf34484bc6039d000ebaf1ade529c9cf81f656a0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
package goxy

import (
	"crypto/tls"
	"errors"
	"fmt"
	"net/rpc"
	"net/url"
)

var (
	ErrNoHost    = errors.New("Both Host and Upstream are required")
	ErrNoCert    = errors.New("Certificate and Key are required")
	ErrEmptyHost = errors.New("Empty Host value")
)

const RPCPort = ":8000"

// Entry holds routing settings
type Entry struct {
	Host     string // URL
	Upstream string // URL
	Cert     []byte // PEM
	Key      []byte // PEM
}

type GoXY struct {
	server *Server
}

func init() {
	rpc.HandleHTTP()
}

func RegisterRPC(s *Server) error {
	return rpc.Register(&GoXY{s})
}

func DialRPC(server string) (*rpc.Client, error) {
	return rpc.DialHTTP("tcp", server)
}

// Add adds a new route
func (s *GoXY) Add(e Entry, _ *struct{}) error {
	host, err := url.Parse(e.Host)
	if err != nil {
		return err
	}
	up, err := url.Parse(e.Upstream)
	if err != nil {
		return err
	}
	if host.Host == "" || up.Host == "" {
		return ErrNoHost
	}
	if host.Path == "" {
		host.Path = "/"
	}
	r := route{
		ServerName: host,
		Upstream:   up,
	}
	if host.Scheme == "https" {
		if e.Cert == nil || e.Key == nil {
			return ErrNoCert
		}
		crt, err := tls.X509KeyPair(e.Cert, e.Key)
		if err != nil {
			return err
		}
		r.Certificate = &crt
	}
	defer s.server.Save(s.server.DataFile)
	s.server.Route[host.Host] = r
	return s.server.Update()
}

// Del removes a route
func (s *GoXY) Del(host string, _ *struct{}) error {
	h, err := url.Parse(host)
	if err != nil {
		return err
	}
	if h.Host == "" {
		return ErrEmptyHost
	}
	delete(s.server.Route, h.Host)
	s.server.Save(s.server.DataFile)
	return s.server.Update()
}

// List routes
func (s GoXY) List(_ struct{}, ret *[]string) error {
	for _, v := range s.server.Route {
		*ret = append(*ret, fmt.Sprint(v))
	}
	return nil
}