121 lines
2.2 KiB
Go
121 lines
2.2 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"math/rand"
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"strings"
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"sync"
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"time"
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)
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var settings *Settings
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var settingsMtx sync.Mutex
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type Settings struct {
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filename string
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AdminPassword string
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Bans []BanInfo
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}
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type BanInfo struct {
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IP string
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Names []string
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When time.Time
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}
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func init() {
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var err error
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settings, err = LoadSettings("settings.json")
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if err != nil {
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panic("Unable to load settings: " + err.Error())
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}
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}
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func LoadSettings(filename string) (*Settings, error) {
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raw, err := ioutil.ReadFile(filename)
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if err != nil {
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return nil, fmt.Errorf("Error reading file: %s", err)
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}
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var s *Settings
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err = json.Unmarshal(raw, &s)
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if err != nil {
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return nil, fmt.Errorf("Error unmarshaling: %s", err)
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}
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s.filename = filename
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s.AdminPassword = generateAdminPass(time.Now().Unix())
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fmt.Printf("Settings reloaded. New admin password: %s\n", s.AdminPassword)
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return s, nil
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}
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func generateAdminPass(seed int64) string {
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out := ""
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r := rand.New(rand.NewSource(seed))
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//for i := 0; i < 20; i++ {
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for len(out) < 20 {
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out = fmt.Sprintf("%s%X", out, r.Int31())
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}
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return out
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}
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func (s *Settings) Save() error {
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marshaled, err := json.Marshal(s)
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if err != nil {
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return fmt.Errorf("Error marshaling: %s", err)
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}
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err = ioutil.WriteFile(s.filename, marshaled, 0777)
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if err != nil {
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return fmt.Errorf("Error saving: %s", err)
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}
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return nil
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}
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func (s *Settings) AddBan(host string, names []string) error {
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b := BanInfo{
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Names: names,
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IP: host,
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When: time.Now(),
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}
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settings.Bans = append(settings.Bans, b)
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fmt.Printf("[BAN] %q (%s) has been banned.\n", strings.Join(names, ", "), host)
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return settings.Save()
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}
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func (s *Settings) RemoveBan(name string) error {
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defer settingsMtx.Unlock()
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settingsMtx.Lock()
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name = strings.ToLower(name)
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newBans := []BanInfo{}
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for _, b := range s.Bans {
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for _, n := range b.Names {
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if n == name {
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fmt.Printf("[ban] Removed ban for %s [%s]\n", b.IP, n)
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} else {
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newBans = append(newBans, b)
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}
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}
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}
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s.Bans = newBans
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return settings.Save()
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}
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func (s *Settings) IsBanned(host string) (bool, []string) {
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defer settingsMtx.Unlock()
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settingsMtx.Lock()
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for _, b := range s.Bans {
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if b.IP == host {
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return true, b.Names
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}
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}
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return false, nil
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}
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