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
|
package main
import (
"flag"
"fmt"
"html/template"
"io/ioutil"
"log"
"net/http"
"strconv"
"strings"
"github.com/gorilla/mux"
)
var (
port *int
)
func registerHTTPFlags() {
port = flag.Int("port", 8080, "The port for HTTP")
}
func setupHTTPServer() http.Server {
r := mux.NewRouter()
r.HandleFunc("/", indexHandler)
r.HandleFunc("/create", createGetHandler).Methods("GET")
r.HandleFunc("/create", createPostHandler).Methods("POST")
r.HandleFunc("/view", viewGetHandler).Methods("GET")
r.HandleFunc("/edit", editGetHandler).Methods("GET")
r.HandleFunc("/edit", editPostHandler).Methods("POST")
return http.Server{
Addr: fmt.Sprintf("0.0.0.0:%d", *port),
Handler: r,
}
}
// Host the index file
func indexHandler(w http.ResponseWriter, r *http.Request) {
readFileToResponse(w, "/index.html")
}
func createGetHandler(w http.ResponseWriter, r *http.Request) {
log.Println("create GET")
readFileToResponse(w, "/create.html")
}
// createPostHandler handles HTTP POST requests to the /create endpoint creating
// new challenges in the database
func createPostHandler(w http.ResponseWriter, r *http.Request) {
// parse the Post Request form
r.ParseForm()
points, err := strconv.ParseInt(r.Form.Get("challengePoints"), 10, 64)
if err != nil {
log.Printf("Could not parse points: %v", err)
return
}
var static bool
if r.Form.Get("challengeStatic") == "on" {
static = true
} else if r.Form.Get("challengeStatic") == "off" {
static = false
} else {
log.Println("Could not parse static: %v", r.Form.Get("challengeStatic"))
return
}
// Define the new challenge
newChallenge := Challenge{
Name: r.Form.Get("challengeName"),
Description: r.Form.Get("challengeDescription"),
Flag: r.Form.Get("challengeFlag"),
Container: r.Form.Get("challengeContainer"),
Category: r.Form.Get("challengeCategory"),
Points: int(points),
Static: static,
}
// Create the new challenge in the database
uuid, err := dbNewChallenge(newChallenge)
if err != nil {
log.Println(err)
return
}
log.Printf("Create a new challenge. UUID: %s", uuid)
}
// viewGetHandler returns a list of all challenges in the database
func viewGetHandler(w http.ResponseWriter, r *http.Request) {
// get all challenges from the db
challs := getAllChallenges(db)
// define a challenges struct storing the challenges.
// This struct can be used in a template
challenges := Challenges{}
for _, chal := range challs {
challenges.Challenge = append(challenges.Challenge, chal)
}
// define a new template to render the challenges in
t := template.New("")
t, err := t.ParseFiles("./hosted/view.html")
if err != nil {
log.Println(err)
return
}
// execure the template using the challenges struct
t.ExecuteTemplate(w, "view", challenges)
}
func editGetHandler(w http.ResponseWriter, r *http.Request) {
var uuid string
if r.URL.Query()["uuid"] == nil {
log.Println("no uuid given")
// redirect the user to the view page for selecting what challenge to edit
viewGetHandler(w, r)
return
}
uuid = r.URL.Query()["uuid"][0]
log.Printf("fetching challenge with the uuid %s", uuid)
//chall := dbGetChallengeByUUID(uuid)
//
// temporary test challenge used while the dbGetChallengeByUUID function
// has not been implemented:
chall := Challenge{
UUID: uuid,
Name: "random challenge name",
Description: "some bad description",
Flag: "FLAG",
Container: "container-randomchallenge",
Category: "guess",
Points: 100,
Static: false,
}
// define a new template to render the challenges in
t := template.New("")
t, err := t.ParseFiles("./hosted/edit_uuid.html")
if err != nil {
log.Println(err)
return
}
// execute the template using the challenges struct
t.ExecuteTemplate(w, "edit_uuid", chall)
return
}
func editPostHandler(w http.ResponseWriter, r *http.Request) {
log.Println("edit POST")
// parse the Post Request form
err := r.ParseForm()
if err != nil {
log.Println("could not parse the http post form!")
return
}
// parse the challenge points
points, err := strconv.ParseInt(r.PostFormValue("challengePoints"), 10, 64)
if err != nil {
log.Printf("Could not parse points: %v (%#v)", err, r.Form.Get("challengePoints"))
return
}
// parse the static value
var static bool
if r.Form.Get("challengeStatic") == "true" {
static = true
} else if r.Form.Get("challengeStatic") == "false" {
static = false
} else {
log.Println("[edit POST] Could not parse static: %v", r.Form.Get("challengeStatic"))
return
}
// define the new edited challenge
editedChallenge := Challenge{
UUID: r.Form.Get("challengeUUID"),
Name: r.Form.Get("challengeName"),
Description: r.Form.Get("challengeDescription"),
Flag: r.Form.Get("challengeFlag"),
Container: r.Form.Get("challengeContainer"),
Category: r.Form.Get("challengeCategory"),
Points: int(points),
Static: static,
}
// update the challenge in the database
editChallengeUUID(r.Form.Get("challengeUUID"), editedChallenge)
log.Println("done editing challenge!")
}
// Helper function to host files off of "hosted/" directory
func readFileToResponse(w http.ResponseWriter, path string) {
requestedFile := strings.Replace(path, "..", "", -1)
contents, readError := ioutil.ReadFile(fmt.Sprintf("hosted/%s", requestedFile))
if readError != nil {
w.Write([]byte(fmt.Sprintf("unable to read %s", requestedFile)))
} else {
w.Write([]byte(contents))
}
}
|
