/
bancho.go
94 lines (79 loc) · 2.01 KB
/
bancho.go
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
package dispatcher
import (
"bufio"
"fmt"
"io/ioutil"
"net/http"
"strconv"
"strings"
"time"
"github.com/bnch/lan/handler"
"github.com/bnch/lan/packets"
)
func panicRecover() {
err := recover()
if err != nil {
fmt.Printf("Critical error! %v\n", err)
}
}
// exportQueue takes from the queue the packets it can fetch in 50 milliseconds.
func exportQueue(token string) []byte {
parts := make([]byte, 0, 1024*64)
p := handler.Redis.BLPop(time.Millisecond*100, "lan/queues/"+token).Val()
if len(p) < 2 {
return nil
}
parts = append(parts, []byte(p[1])...)
for {
p := handler.Redis.LPop("lan/queues/" + token).Val()
if p == "" {
break
}
parts = append(parts, []byte(p)...)
}
return parts
}
func (s Server) bancho(w http.ResponseWriter, r *http.Request) {
defer panicRecover()
if r.Method != "POST" || r.UserAgent() != "osu!" {
w.Header().Add("Content-Type", "text/plain; charset=utf-8")
w.Write([]byte("lan\ngithub.com/bnch/lan\n"))
return
}
w.Header().Add("Content-Type", "text/html; charset=utf-8")
w.Header()["cho-protocol"] = []string{strconv.Itoa(handler.ProtocolVersion)}
tok := r.Header.Get("osu-token")
var sess handler.Session
if tok == "" {
br := bufio.NewReader(r.Body)
u, _ := br.ReadString('\n')
p, _ := br.ReadString('\n')
sess = handler.Authenticate(strings.TrimSpace(u), strings.TrimSpace(p))
} else {
sess = s.banchoHandle(r)
}
if tok == "" {
w.Header()["cho-token"] = []string{sess.Token}
}
w.Write(exportQueue(sess.Token))
}
func (s Server) banchoHandle(r *http.Request) handler.Session {
sessPtr := handler.GetSession(r.Header.Get("osu-token"))
if sessPtr == nil {
return handler.LogoutTokenNotFound()
}
sess := *sessPtr
d, err := ioutil.ReadAll(r.Body)
if err != nil {
fmt.Printf("Error reading post body: %v\n", err)
return handler.LogoutTokenNotFound()
}
DumpPackets(d)
pks, err := packets.Depacketify(d)
if err != nil {
fmt.Printf("Error depacketifying: %v\n", err)
return handler.LogoutTokenNotFound()
}
sess.Handle(pks)
return sess
}