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源文雨
2022-11-26 00:39:38 +08:00
parent 2dd688a7d9
commit 8743bf9b5d
8 changed files with 361 additions and 0 deletions
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9
base64.go Normal file
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package gondportal
import "encoding/base64"
const (
PortalBase64Table = "LVoJPiCN2R8G90yg+hmFHuacZ1OWMnrsSTXkYpUq/3dlbfKwv6xztjI7DeBE45QA"
)
var Base64Encoding = base64.NewEncoding(PortalBase64Table)

15
base64_test.go Normal file
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package gondportal
import (
"encoding/base64"
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
func TestBase64(t *testing.T) {
buf := strings.Builder{}
base64.NewEncoder(Base64Encoding, &buf).Write([]byte("123456"))
assert.Equal(t, "9F2z0JHI", buf.String())
}

16
go.mod Normal file
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module github.com/fumiama/go-nd-portal
go 1.19
require (
github.com/FloatTech/floatbox v0.0.0-20221121151328-cac4af114b44
github.com/stretchr/testify v1.7.0
)
require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/sirupsen/logrus v1.9.0 // indirect
golang.org/x/sys v0.0.0-20220915200043-7b5979e65e41 // indirect
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
)

22
go.sum Normal file
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github.com/FloatTech/floatbox v0.0.0-20221121151328-cac4af114b44 h1:/Er1NIsb3giFG0rQqA2TO1JkN8TTBDRcmaektAvEfK8=
github.com/FloatTech/floatbox v0.0.0-20221121151328-cac4af114b44/go.mod h1:DUd62cKBBLBK+8HEABQ6hM2bfZ3TMLOAMKaf1R2w7Pw=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/tidwall/gjson v1.14.3 h1:9jvXn7olKEHU1S9vwoMGliaT8jq1vJ7IH/n9zD9Dnlw=
github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220915200043-7b5979e65e41 h1:ohgcoMbSofXygzo6AD2I1kz3BFmW1QArPYTtwEM3UXc=
golang.org/x/sys v0.0.0-20220915200043-7b5979e65e41/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

21
helper.go Normal file
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package gondportal
import (
"reflect"
"unsafe"
)
// BytesToString 没有内存开销的转换
func BytesToString(b []byte) string {
return *(*string)(unsafe.Pointer(&b))
}
// StringToBytes 没有内存开销的转换
func StringToBytes(s string) (b []byte) {
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
bh.Data = sh.Data
bh.Len = sh.Len
bh.Cap = sh.Len
return b
}

103
portal.go Normal file
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package gondportal
import (
"crypto/hmac"
"crypto/md5"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"net"
"time"
"github.com/FloatTech/floatbox/web"
)
var (
ErrIllegalIPv4 = errors.New("illegal ipv4")
ErrUnexpectedChallengeResponse = errors.New("unexpected challenge response")
)
type Portal struct {
nam string
pwd string
ip net.IP
}
func NewPortal(name, password string, ipv4 net.IP) (*Portal, error) {
if len(ipv4) != 4 {
return nil, ErrIllegalIPv4
}
return &Portal{
nam: name,
pwd: password,
ip: ipv4,
}, nil
}
func (p *Portal) GetChallenge() (string, error) {
data, err := web.RequestDataWith(
web.NewDefaultClient(),
fmt.Sprintf(PortalGetChallenge, "gondportal", p.nam, p.ip, time.Now().UnixMilli()),
"GET", "", PortalHeaderUA,
)
if err != nil {
return "", err
}
if len(data) < 12 {
return "", ErrUnexpectedChallengeResponse
}
type rsp struct {
Challenge string `json:"challenge"`
Ecode int `json:"ecode"`
Msg string `json:"error_msg"`
}
var r rsp
err = json.Unmarshal(data[11:len(data)-1], &r)
if err != nil {
return "", err
}
if r.Ecode != 0 {
return "", errors.New(r.Msg)
}
return r.Challenge, nil
}
func (p *Portal) PasswordHMd5(challenge string) string {
var buf [16]byte
h := hmac.New(md5.New, StringToBytes(challenge))
_, _ = h.Write(StringToBytes(p.pwd))
return hex.EncodeToString(h.Sum(buf[:0]))
}
func (p *Portal) Login(challenge string) error {
info := EncodeUserInfo(p.String(), challenge)
hmd5 := p.PasswordHMd5(challenge)
data, err := web.RequestDataWith(
web.NewDefaultClient(),
fmt.Sprintf(PortalLogin, "gondportal", p.nam, hmd5, p.ip, p.CheckSum(challenge, hmd5, info), info, time.Now().UnixMilli()),
"GET", "", PortalHeaderUA,
)
if err != nil {
return err
}
if len(data) < 12 {
return ErrUnexpectedChallengeResponse
}
type rsp struct {
Error string `json:"error"`
}
var r rsp
err = json.Unmarshal(data[11:len(data)-1], &r)
if err != nil {
return err
}
if r.Error == "ok" {
return nil
}
return errors.New(r.Error)
}
func (p *Portal) String() string {
return fmt.Sprintf(PortalUserInfo, p.nam, p.pwd, p.ip)
}

96
server.go Normal file
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package gondportal
import (
"crypto/sha1"
"encoding/binary"
"encoding/hex"
)
const (
PortalServerIP = "10.253.0.237"
PortalGetChallenge = "http://" + PortalServerIP + "/cgi-bin/get_challenge?callback=%s&username=%s@dx-uestc&ip=%v&_=%d"
PortalLogin = "http://" + PortalServerIP + "/cgi-bin/srun_portal?callback=%s&action=login&username=%s@dx-uestc&password={MD5}%s&ac_id=1&ip=%v&chksum=%s&info={SRBX1}%s&n=200&type=1&os=Windows+10&name=Windows&double_stack=0&_=%d"
)
const (
PortalHeaderAccept = "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript, */*; q=0.01"
PortalHeaderUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.56"
)
const (
PortalUserInfo = `{"username":"%s@dx-uestc","password":"%s","ip":"%v","acid":"1","enc_ver":"srun_bx1"}`
)
func EncodeUserInfo(info, challenge string) string {
if len(info) == 0 || len(challenge) == 0 || len(challenge)%4 != 0 {
return ""
}
sc := len(info)
if sc%4 != 0 {
sc = (sc/4 + 1) * 4
}
userinfo := make([]byte, sc)
copy(userinfo, info)
v := make([]uint32, sc/4, sc/4+1)
for i := 0; i < sc/4; i++ {
v[i] = binary.LittleEndian.Uint32(userinfo[i*4 : i*4+4])
}
v = append(v, uint32(len(info)))
sc = len(challenge)
if sc < 16 {
sc = 16
}
k := make([]uint32, sc/4)
token := StringToBytes(challenge)
for i := 0; i < sc/4; i++ {
k[i] = binary.LittleEndian.Uint32(token[i*4 : i*4+4])
}
n := len(v) - 1
z := v[n]
d := uint32(0)
for q := 0; q < 6+52/(n+1); q++ {
d += uint32(0x86014019|0x183639A0) & uint32(0x8CE0D9BF|0x731F2640)
e := (d >> 2) & 3
for p := 0; p < n; p++ {
y := v[p+1]
m := (z >> 5) ^ (y << 2)
m += ((y >> 3) ^ (z << 4)) ^ (d ^ y)
m += k[(uint32(p)&3)^e] ^ z
v[p] += m & (0xEFB8D130 | 0x10472ECF)
z = v[p]
}
y := v[0]
m := (z >> 5) ^ (y << 2)
m += ((y >> 3) ^ (z << 4)) ^ (d ^ y)
m += k[uint32(n)&3^e] ^ z
v[n] += m & (0xBB390742 | 0x44C6F8BD)
z = v[n]
}
lv := make([]byte, len(v)*4)
for i := 0; i < len(v); i++ {
binary.LittleEndian.PutUint32(lv[i*4:i*4+4], v[i])
}
return Base64Encoding.EncodeToString(lv)
}
func (p *Portal) CheckSum(challenge, hmd5, info string) string {
var buf [20]byte
h := sha1.New()
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write(StringToBytes(p.nam))
_, _ = h.Write([]byte("@dx-uestc"))
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write(StringToBytes(hmd5))
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write([]byte("1")) // ac_id
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write(StringToBytes(p.ip.String()))
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write([]byte("200")) // n
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write([]byte("1")) // type
_, _ = h.Write(StringToBytes(challenge))
_, _ = h.Write([]byte("{SRBX1}"))
_, _ = h.Write(StringToBytes(info))
return hex.EncodeToString(h.Sum(buf[:0]))
}

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server_test.go Normal file
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package gondportal
import (
"crypto/hmac"
"crypto/md5"
"crypto/sha1"
"encoding/binary"
"encoding/hex"
"net"
"testing"
"github.com/stretchr/testify/assert"
)
func TestDecodeInfo(t *testing.T) {
info := `{"username":"2000010101001@dx-uestc","password":"12345678","ip":"1.2.3.4","acid":"1","enc_ver":"srun_bx1"}`
sc := len(info)
if sc%4 != 0 {
sc = (sc/4 + 1) * 4
}
userinfo := make([]byte, sc)
copy(userinfo, info)
v := make([]uint32, sc/4, sc/4+1)
for i := 0; i < sc/4; i++ {
v[i] = binary.LittleEndian.Uint32(userinfo[i*4 : i*4+4])
}
v = append(v, uint32(len(info)))
assert.Equal(t, []uint32{1937056379, 1634628197, 975332717, 808464930, 808529968, 808529969, 1681928496, 1702178168, 576943219, 1634738732, 1870099315, 975332466, 858927394, 926299444, 573317688, 975335529, 841888034, 875442990, 1629629474, 577005923, 573645370, 1852121644, 1702256483, 574235250, 1853190771, 829973087, 32034, 106}, v)
}
func TestDecodeKey(t *testing.T) {
challenge := "c312a4194d4310695b71d92ac3c740198a14a7a280022f89408edec4e932d1e5"
sc := len(challenge)
k := make([]uint32, sc/4)
token := StringToBytes(challenge)
for i := 0; i < sc/4; i++ {
k[i] = binary.LittleEndian.Uint32(token[i*4 : i*4+4])
}
assert.Equal(t, []uint32{842085219, 959525985, 859071540, 959852593, 825713205, 1630681444, 929248099, 959524916, 875651384, 845231969, 842018872, 959997490, 1698181172, 878929252, 842217829, 895824228}, k)
}
func TestEncodeUserInfo(t *testing.T) {
u, err := NewPortal("2000010101001", "12345678", net.IPv4(1, 2, 3, 4).To4())
if err != nil {
t.Fatal(err)
}
t.Log(u.String())
r := EncodeUserInfo(u.String(), "c312a4194d4310695b71d92ac3c740198a14a7a280022f89408edec4e932d1e5")
assert.Equal(t, "LMDd8Hmfuq32k+whLiNtcuRwEVxEswfsm4rKEoAoGnFeDlMijgeXC6mtK3nTlrNmjwoEmRyLsWePyrFzDd/EI7EfgKh2gF3c9dGmUrlFO9cy6PFqBDShWsGaAuatVgZLhKBOACTShgxGraRJBoA9WS==", r)
}
func TestHMd5(t *testing.T) {
h := hmac.New(md5.New, []byte("c312a4194d4310695b71d92ac3c740198a14a7a280022f89408edec4e932d1e5"))
h.Write([]byte("1234567890"))
assert.Equal(t, "69ff50d80e734878259dbee3322591a7", hex.EncodeToString(h.Sum(nil)))
}
func TestSha1(t *testing.T) {
h := sha1.New()
h.Write([]byte("123456"))
assert.Equal(t, "7c4a8d09ca3762af61e59520943dc26494f8941b", hex.EncodeToString(h.Sum(nil)))
}
func TestCheckSum(t *testing.T) {
u, err := NewPortal("2000010101001", "1234567890", net.IPv4(1, 2, 3, 4).To4())
if err != nil {
t.Fatal(err)
}
t.Log(u.String())
s := u.CheckSum(
"c312a4194d4310695b71d92ac3c740198a14a7a280022f89408edec4e932d1e5",
"69ff50d80e734878259dbee3322591a7",
EncodeUserInfo(
u.String(),
"c312a4194d4310695b71d92ac3c740198a14a7a280022f89408edec4e932d1e5",
),
)
assert.Equal(t, "3785bd1e1fa71a2b26470b5faa64aad9130ae418", s)
}