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
|
package main
import (
"database/sql"
"fmt"
"log"
_ "github.com/lib/pq"
)
// setup the Database
func setupDatabase() *sql.DB {
connStr := "user=postgres dbname=postgres sslmode=disable"
db, err := sql.Open("postgres", connStr)
if err != nil {
log.Fatal(err)
}
return db
}
// getNames gets the name of all the challenges
func dbGetName(db *sql.DB) string {
// get the current name of the challenges
query := fmt.Sprintf("SELECT name FROM challenges WHERE points=200")
var names string
err := db.QueryRow(query).Scan(&names)
if err != nil {
log.Fatalf("[ E ] :", err)
}
return names
}
// getAllChallenges gets all the challenges from the server
func dbGetAllChallenges() []Challenge {
// build the query
query := fmt.Sprintf("SELECT * FROM challenges")
// Execute the query
rows, err := db.Query(query)
defer rows.Close()
if err != nil {
log.Printf("[ E ] getAllChallenges query: %v\n\t\t\t query: %s\n", err, query)
return []Challenge{}
}
var challenges []Challenge
// iterate over the returned rows
for rows.Next() {
var uuid, name, description, flag, container, category string
var points int
var static bool
scanErr := rows.Scan(&uuid, &name, &description, &flag, &container, &category, &points, &static)
if scanErr != nil {
log.Printf("[ E ] scan error: %v", scanErr)
return []Challenge{}
}
newChallenge := Challenge{
UUID: uuid,
Name: name,
Description: description,
Flag: flag,
Container: container,
Category: category,
Points: points,
Static: static,
}
challenges = append(challenges, newChallenge)
}
return challenges
}
// dbNewChallenge inserts the given challenge into the database
func dbNewChallenge(challenge Challenge) (string, error) {
// build the query to be executed
query := fmt.Sprintf("INSERT INTO challenges(name, description, flag, container, category, points, static) VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING uuid")
// execute the query with the challenge values given
var uuid string
err := db.QueryRow(query, challenge.Name, challenge.Description, challenge.Flag, challenge.Container, challenge.Category, challenge.Points, challenge.Static).Scan(&uuid)
// handle errors
if err != nil {
return "", err
}
return uuid, nil
}
// editChallengeUUID edited the challenge with the given uuid using the values in the updatedChallenge
func dbEditChallengeUUID(uuid string, updatedChallenge Challenge) error {
query := fmt.Sprintf("UPDATE challenges SET name = '%s', description = '%s', flag = '%s', container = '%s', category = '%s', points = %d, static = %t WHERE uuid::text = '%s'", updatedChallenge.Name, updatedChallenge.Description, updatedChallenge.Flag, updatedChallenge.Container, updatedChallenge.Category, updatedChallenge.Points, updatedChallenge.Static, updatedChallenge.UUID)
_, err := db.Exec(query)
if err != nil {
return err
}
return nil
}
// dbGetChallengeByUUID returns the challenge with the given UUID from the database
func dbGetChallengeByUUID(uuid string) (Challenge, error) {
// build the query to be executed
query := fmt.Sprintf("SELECT uuid, name, description, flag, container, category, points, static FROM challenges WHERE uuid::text= '%s'", uuid)
challenge := Challenge{}
// execute the query storing the values in the challenge struct defined above
err := db.QueryRow(query).Scan(&challenge.UUID, &challenge.Name, &challenge.Description, &challenge.Flag, &challenge.Container, &challenge.Category, &challenge.Points, &challenge.Static)
if err != nil {
return Challenge{}, err
}
return challenge, nil
}
func dbDeleteChallengeByUUID(uuid string) error {
query := fmt.Sprintf("DELETE FROM challenges WHERE uuid::text = '%s'", uuid)
_, _ = db.Exec(query)
return nil
}
|
