-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
275 lines (233 loc) · 6.39 KB
/
main.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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
package main
import (
"errors"
"fmt"
"html/template"
"log"
"net/http"
"net/url"
"time"
"github.com/dgrijalva/jwt-go"
"github.com/google/uuid"
"golang.org/x/crypto/bcrypt"
)
type user struct {
Password []byte
First string
}
type customClaims struct {
jwt.StandardClaims
SID string
}
// key is email , value is password
//new :key is email , value is user
var db = map[string]user{}
var sessions = map[string]string{}
var tpl *template.Template
var key = []byte("the sucess of mine is the blessing of my Guruji shri shri 1008 ShriNiwas Prasad Sir")
func init() {
tpl = template.Must(template.ParseGlob("tmp/*"))
}
func main() {
http.HandleFunc("/", Index)
http.HandleFunc("/register", Register)
http.HandleFunc("/login", Login)
http.HandleFunc("/logout", logout)
http.ListenAndServe(":8080", nil)
}
func Index(w http.ResponseWriter, r *http.Request) {
c, err := r.Cookie("sessionID")
if err != nil {
c = &http.Cookie{
Name: "sessionID",
Value: "",
}
}
SID, err := parseToken(c.Value)
if err != nil {
log.Println("index parseToken ", err)
}
var e string
if SID != "" {
e = sessions[SID]
}
var f string
if user, ok := db[e]; ok {
f = user.First
}
/* r.ParseForm()
tpl.ExecuteTemplate(w , "tmp.html" , nil) */
msg := r.FormValue("msg")
fmt.Fprintf(w, `<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<title>Page Title</title>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<link rel='stylesheet' type='text/css' media='screen' href='main.css'>
<script src='main.js'></script>
</head>
<body>
<h2>IF YOU HAVE A SESSION , HERE IS YOUR NAME : %S</h2>
<h2>IF YOU HAVE A SESSION , HERE IS YOUR EMAIL : %S</h2>
<h2>If THERE WAS ANY ERROR , HERE IT IS : %s</h1>
<form action="register" method="post">
<h2><b>Registration </h2>
<label for="first">First</label>
First<input type="text" name="first" id="first" placeholder="first">
Email<input type="email" name="e">
Password<input type="password" name="p">
<input type="submit">
</form>
<form action="login" method="post">
<h2><b>Log In </h2>
Email<input type="email" name="e">
Password<input type="password" name="p">
<input type="submit">
</form>
<h1>Logout</h1>
<form actioon="/logout" method="POST">
<input type="submit" vale="logout">
</form>
</body>
</html>`, f, e, msg)
}
func Register(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
msg := url.QueryEscape("your method is not correct")
http.Redirect(w, r, "/msg = "+msg, http.StatusSeeOther)
return
}
e := r.FormValue("e")
if e == "" {
msg := url.QueryEscape("your Email needs to not be empty")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
p := r.FormValue("p")
if p == "" {
msg := url.QueryEscape("your Password needs to not be empty")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
f := r.FormValue("first")
if f == "" {
msg := url.QueryEscape("your first name to not be empty")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
bsp, err := bcrypt.GenerateFromPassword([]byte(p), bcrypt.DefaultCost)
if err != nil {
msg := url.QueryEscape("there are an internal server error.--")
http.Error(w, msg, http.StatusInternalServerError)
return
}
log.Println("Password :->", p)
log.Println("bcrypted password :->", bsp)
db[e] = user{
Password: bsp,
First: f,
}
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func Login(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
msg := url.QueryEscape("your method was not post")
http.Redirect(w, r, "/msg = "+msg, http.StatusSeeOther)
return
}
e := r.FormValue("e")
if e == "" {
msg := url.QueryEscape("your Email needs to not be empty")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
p := r.FormValue("p")
if p == "" {
msg := url.QueryEscape("your Password needs to not be empty")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
if _, ok := db[e]; !ok {
msg := url.QueryEscape("your email and password did't match")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
err := bcrypt.CompareHashAndPassword((db[e].Password), []byte(p))
if err != nil {
msg := url.QueryEscape("your email and password did't match")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
sUUID := uuid.New().String()
sessions[sUUID] = e
token, err := createToken(sUUID)
if err != nil {
log.Println("couldn't createToken in Login ", err)
msg := url.QueryEscape("our server didn't get response at this time, plz try after some time")
http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
return
}
c := http.Cookie{
Name: "sessionID",
Value: token,
}
http.SetCookie(w, &c)
msg := url.QueryEscape("you logged in " + e)
//http.Redirect(w, r, "/?msg="+msg, http.StatusSeeOther)
fmt.Fprintf(w,``)
tpl.ExecuteTemplate(w, "welcome.html", msg)
}
func createToken(sid string) (string, error) {
cc := customClaims{
StandardClaims: jwt.StandardClaims{
ExpiresAt: time.Now().Add(5 * time.Minute).Unix(),
},
SID: sid,
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, cc)
st, err := token.SignedString(key)
if err != nil {
return "", fmt.Errorf("could't sign token in createToken %w", err)
}
return st, nil
}
func parseToken(st string) (string, error) {
token, err := jwt.ParseWithClaims(st, &customClaims{}, func(t *jwt.Token) (interface{}, error) {
if t.Method.Alg() != jwt.SigningMethodHS256.Alg() {
return nil, errors.New("parseWithClaims different algorithms used")
}
return key, nil
})
if err != nil {
return "", fmt.Errorf("couldn't ParsewithClaims in parseToken %w", err)
}
if !token.Valid {
return "", fmt.Errorf("token not valid in parseToken")
}
return token.Claims.(*customClaims).SID, nil
}
func logout(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Redirect(w, r, "/", http.StatusSeeOther)
return
}
c, err := r.Cookie("sessionID")
if err != nil {
c = &http.Cookie{
Name: "sessionID",
Value: "",
}
fmt.Println("cookie value in logout ",c.Value)
}
sID, err := parseToken(c.Value)
if err != nil {
log.Println("index parseToken ", err)
}
delete(sessions, sID)
c.MaxAge = -1
http.SetCookie(w, c)
fmt.Println("cookie value in logoutafter deletasion ",c.Value)
http.Redirect(w, r, "/", http.StatusSeeOther)
}