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
|
package main
import (
"bufio"
"encoding/json"
"io"
"log"
"net/http"
"os"
"os/user"
"strings"
"time"
"golang.org/x/crypto/bcrypt"
)
type response struct {
Msg string `json:"msg"`
Timestamp int64 `json:"timestamp"`
}
func main() {
var msg string = ""
var timestamp int64 = 0
var adminHash []byte
var userHash []byte
user, err := user.Current()
if err != nil {
log.Fatal(err.Error())
}
file, err := os.Open(user.HomeDir + "/.status/auth")
if err != nil {
log.Fatal(err.Error())
}
defer file.Close()
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := scanner.Text()
if after, found := strings.CutPrefix(line, "admin:"); found {
adminHash = []byte(after)
}
if after, found := strings.CutPrefix(line, "user:"); found {
userHash = []byte(after)
}
}
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
err := bcrypt.CompareHashAndPassword(userHash, []byte(username+password))
if err != nil {
deny(w)
return
}
res := response{
Msg: msg,
Timestamp: timestamp,
}
json, err := json.Marshal(res)
if err != nil {
http.Error(w, "Failed create JSON body", http.StatusInternalServerError)
return
}
w.Write(json)
return
}
deny(w)
})
http.HandleFunc("/raw", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
err := bcrypt.CompareHashAndPassword(userHash, []byte(username+password))
if err != nil {
deny(w)
return
}
w.Write([]byte(msg))
return
}
deny(w)
})
http.HandleFunc("/update", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
err := bcrypt.CompareHashAndPassword(adminHash, []byte(username+password))
if err != nil {
deny(w)
return
}
if r.Method == "POST" {
buf, err := io.ReadAll(r.Body)
if err != nil {
http.Error(w, "Failed to read request body", http.StatusInternalServerError)
return
}
msg = string(buf)
timestamp = time.Now().Unix()
log.Print(string(buf))
w.Write([]byte("success"))
return
}
}
deny(w)
})
http.HandleFunc("/generate-hash", func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if ok {
hash, err := bcrypt.GenerateFromPassword([]byte(username+password), 0)
if err != nil {
http.Error(w, "Failed to generate hash", http.StatusInternalServerError)
return
}
log.Print(string(hash))
w.Write([]byte("Hash successfully generated (output to server log for some semblance of security)"))
return
}
deny(w)
})
log.Fatal(http.ListenAndServe(":"+os.Args[1], nil))
}
func deny(w http.ResponseWriter) {
w.Header().Set("WWW-Authenticate", `Basic realm="restricted", charset="UTF-8"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}
|