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data.go
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data.go
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package main
import (
"fmt"
"database/sql"
"log"
_ "github.com/mattn/go-sqlite3"
)
var (
users []User
hosts []Host
creds []Credential
)
type Database struct {
Connection *sql.DB
}
type User struct {
Id int
Username string
PasswordHash string
Admin bool
}
type Host struct {
Id int
Hostname string
IpAddress string
Os string
Information string
}
type Credential struct {
Id int
Username string
Password string
Host string
Information string
}
func createDbConnection() (*Database, error) {
db, err := sql.Open("sqlite3", "db.sql")
if err != nil {
log.Fatal(err)
}
return &Database{Connection: db}, nil
}
func (d *Database) Close() {
d.Connection.Close()
}
func createDbSchema(d *Database) {
const createStmt string = `
create table if not exists Users (
id integer primary key autoincrement not null,
username text not null unique,
passwordhash text not null,
admin bool not null
);
create table if not exists Hosts (
id integer primary key autoincrement not null,
hostname text not null,
ipaddress text not null,
os text not null,
information text not null
);
create table if not exists Credentials (
id integer primary key autoincrement not null,
username text not null,
password text not null,
host text not null,
information text not null
);
`
_, err := d.Connection.Exec(createStmt)
if err != nil {
log.Print(err)
return
}
}
func getUsers(d *Database) ([]User, error) {
var id int
var username, passwordhash string
var admin bool
rows, err := d.Connection.Query("select * from users")
if err != nil {
log.Print(err)
}
defer rows.Close()
for rows.Next() {
err = rows.Scan(&id, &username, &passwordhash, &admin)
if err != nil {
log.Print(err)
}
users = append(users, User{
Id: id,
Username: username,
PasswordHash: passwordhash,
Admin: admin,
})
}
err = rows.Err()
if err != nil {
log.Print(err)
}
return users, nil
}
func createAdmin(d *Database) (string, error) {
var password string
stmt, err := d.Connection.Prepare("delete from Users where username = ?")
if err != nil {
log.Print(err)
}
defer stmt.Close()
_, err = stmt.Exec("admin")
if err != nil {
log.Print(err)
}
stmt_2, err := d.Connection.Prepare("insert into users(username, passwordhash, admin) values(?, ?, ?)")
if err != nil {
log.Print(err)
}
defer stmt_2.Close()
password, err = generateRandomString(12)
if err != nil {
log.Print(err)
return "", nil
}
hashedPassword, err := hashPassword(password)
if err != nil {
log.Print(err)
}
_, err = stmt_2.Exec("admin", hashedPassword, true)
if err != nil {
log.Print(err)
}
return password, nil
}
func insertUser(d *Database, user User) {
tx, err := d.Connection.Begin()
if err != nil {
log.Print(err)
}
stmt, err := tx.Prepare("insert into users(username, passwordhash, admin) values(?, ?, ?)")
if err != nil {
log.Print(err)
}
defer stmt.Close()
hashedPassword, err := hashPassword(user.PasswordHash)
if err != nil {
log.Print(err)
return
}
fmt.Println(hashPassword)
_, err = stmt.Exec(user.Username, hashedPassword, user.Admin)
if err != nil {
log.Print(err)
}
err = tx.Commit()
if err != nil {
log.Print(err)
}
}
func getUserById(d *Database, id int) (User, error) {
var username, password string
var admin bool
stmt, err := d.Connection.Prepare("select * from Users where id = ?")
if err != nil {
log.Print(err)
}
defer stmt.Close()
err = stmt.QueryRow(id).Scan(&id, &username, &password, &admin)
if err != nil {
log.Print(err)
}
return User{
Id: id,
Username: username,
PasswordHash: password,
Admin: admin,
}, nil
}
func getUserByUsername(d *Database, username string) (User, error) {
var id int
var password string
var admin bool
stmt, err := d.Connection.Prepare("select * from Users where username = ?")
if err != nil {
log.Print(err)
}
defer stmt.Close()
err = stmt.QueryRow(username).Scan(&id, &username, &password, &admin)
if err != nil {
log.Print(err)
}
return User{
Id: id,
Username: username,
PasswordHash: password,
Admin: admin,
}, nil
}
func getUserIdByUsername(d *Database, username string) (int, error) {
var id int
stmt, err := d.Connection.Prepare("select id from Users where username = ?")
if err != nil {
log.Print(err)
}
defer stmt.Close()
err = stmt.QueryRow(username).Scan(&id)
if err != nil {
log.Print(err)
}
return id, nil
}
func getHosts(d *Database) ([]Host, error) {
var id int
var hostname, ipaddress, os, information string
rows, err := d.Connection.Query("select * from hosts")
if err != nil {
log.Print(err)
}
defer rows.Close()
for rows.Next() {
err = rows.Scan(&id, &hostname, &ipaddress, &os, &information)
if err != nil {
log.Print(err)
}
hosts = append(hosts, Host{
Id: id,
Hostname: hostname,
IpAddress: ipaddress,
Os: os,
Information: information,
})
}
err = rows.Err()
if err != nil {
log.Print(err)
}
return hosts, nil
}
func insertHost(d *Database, host Host) {
tx, err := d.Connection.Begin()
if err != nil {
log.Print(err)
}
stmt, err := tx.Prepare("insert into hosts(hostname, ipaddress, os, information) values(?, ?, ?, ?)")
if err != nil {
log.Print(err)
}
defer stmt.Close()
_, err = stmt.Exec(host.Hostname, host.IpAddress, host.Os, host.Information)
if err != nil {
log.Print(err)
}
err = tx.Commit()
if err != nil {
log.Print(err)
}
}
func getCredentials(d *Database) ([]Credential, error) {
var id int
var username, password, host, information string
rows, err := d.Connection.Query("select * from credentials")
if err != nil {
log.Print(err)
}
defer rows.Close()
for rows.Next() {
err = rows.Scan(&id, &username, &password, &host, &information)
if err != nil {
log.Print(err)
}
creds = append(creds, Credential{
Id: id,
Username: username,
Password: password,
Host: host,
Information: information,
})
}
err = rows.Err()
if err != nil {
log.Print(err)
}
return creds, nil
}
func insertCredential(d *Database, cred Credential) {
tx, err := d.Connection.Begin()
if err != nil {
log.Print(err)
}
stmt, err := tx.Prepare("insert into credentials(username, password, host, information) values(?, ?, ?, ?)")
if err != nil {
log.Print(err)
}
defer stmt.Close()
_, err = stmt.Exec(cred.Username, cred.Password, cred.Host, cred.Information)
if err != nil {
log.Print(err)
}
err = tx.Commit()
if err != nil {
log.Print(err)
}
}