badguardhome/home/auth_glinet.go
Simon Zolin dab0a9d87a + "--glinet" command-line argument: Run in GL-Inet compatibility mode
Close #1853

Squashed commit of the following:

commit 3730cafabe8fa1dbf2bf75915079d2effe4ff9a3
Merge: 533ae3c2 6b134469
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 19:21:08 2020 +0300

    Merge remote-tracking branch 'origin/master' into 1853-glinet

commit 533ae3c2678cd6cfd26bf9560bee4eb5a015a615
Merge: 3521992b 21dfb5ff
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 19:14:45 2020 +0300

    Merge remote-tracking branch 'origin/master' into 1853-glinet

commit 3521992b4609fa3400942c89f7a7546dade459bc
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 18:04:53 2020 +0300

    logs

commit 3e0258782b1a14c08156fe65940ae7b661a42b54
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 17:11:47 2020 +0300

    fix

commit bb814db9df1c770d0ea02eafd12bedd122bef894
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 16:58:37 2020 +0300

    minor

commit b161bbc5749ce76b16600e0153120935ad20077e
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jul 3 16:53:22 2020 +0300

    move code

commit c506e81265bdee140c0f61255f927c13738efc1a
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jul 2 10:50:56 2020 +0300

    test

commit c09f201cbd88498a2328be332197e4d96e5fb115
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jul 2 10:42:23 2020 +0300

    + "--glinet" command-line argument: Run in GL-Inet compatibility mode
2020-07-03 20:34:08 +03:00

103 lines
2.0 KiB
Go

package home
import (
"bytes"
"encoding/binary"
"io/ioutil"
"net"
"net/http"
"os"
"time"
"unsafe"
"github.com/AdguardTeam/golibs/log"
)
// GLMode - enable GL-Inet compatibility mode
var GLMode bool
var glFilePrefix = "/tmp/gl_token_"
const glTokenTimeoutSeconds = 3600
const glCookieName = "Admin-Token"
func glProcessRedirect(w http.ResponseWriter, r *http.Request) bool {
if !GLMode {
return false
}
// redirect to gl-inet login
host, _, _ := net.SplitHostPort(r.Host)
url := "http://" + host
log.Debug("Auth: redirecting to %s", url)
http.Redirect(w, r, url, http.StatusFound)
return true
}
func glProcessCookie(r *http.Request) bool {
if !GLMode {
return false
}
glCookie, glerr := r.Cookie(glCookieName)
if glerr != nil {
return false
}
log.Debug("Auth: GL cookie value: %s", glCookie.Value)
if glCheckToken(glCookie.Value) {
return true
}
log.Info("Auth: invalid GL cookie value: %s", glCookie)
return false
}
func glCheckToken(sess string) bool {
tokenName := glFilePrefix + sess
_, err := os.Stat(tokenName)
if err != nil {
log.Error("os.Stat: %s", err)
return false
}
tokenDate := glGetTokenDate(tokenName)
now := uint32(time.Now().UTC().Unix())
return now <= (tokenDate + glTokenTimeoutSeconds)
}
func archIsLittleEndian() bool {
var i int32 = 0x01020304
u := unsafe.Pointer(&i)
pb := (*byte)(u)
b := *pb
return (b == 0x04)
}
func glGetTokenDate(file string) uint32 {
f, err := os.Open(file)
if err != nil {
log.Error("os.Open: %s", err)
return 0
}
var dateToken uint32
bs, err := ioutil.ReadAll(f)
if err != nil {
log.Error("ioutil.ReadAll: %s", err)
return 0
}
buf := bytes.NewBuffer(bs)
if archIsLittleEndian() {
err := binary.Read(buf, binary.LittleEndian, &dateToken)
if err != nil {
log.Error("binary.Read: %s", err)
return 0
}
} else {
err := binary.Read(buf, binary.BigEndian, &dateToken)
if err != nil {
log.Error("binary.Read: %s", err)
return 0
}
}
return dateToken
}