90 lines
1.7 KiB
Go
90 lines
1.7 KiB
Go
package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"sync"
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"golang.org/x/crypto/bcrypt"
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"gopkg.in/yaml.v3"
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)
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type AdminUser struct {
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Username string `yaml:"username"`
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PasswordHash string `yaml:"password_hash"`
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}
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type Config struct {
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Port int `yaml:"port"`
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Admin []AdminUser `yaml:"admin"`
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mu sync.Mutex
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path string
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}
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func LoadConfig(dataDir string) (*Config, error) {
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path := filepath.Join(dataDir, "config.yml")
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cfg := &Config{
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Port: 47732,
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Admin: nil,
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path: path,
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}
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data, err := os.ReadFile(path)
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if err == nil {
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if err := yaml.Unmarshal(data, cfg); err != nil {
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return nil, fmt.Errorf("parse config: %w", err)
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}
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}
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return cfg, nil
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}
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func (c *Config) Save() error {
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c.mu.Lock()
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defer c.mu.Unlock()
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data, err := yaml.Marshal(c)
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if err != nil {
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return err
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}
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return os.WriteFile(c.path, data, 0640)
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}
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func (c *Config) SetAdmin(username, password string) error {
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c.mu.Lock()
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defer c.mu.Unlock()
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hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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if err != nil {
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return err
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}
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user := AdminUser{Username: username, PasswordHash: string(hash)}
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// Replace existing or append.
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for i, u := range c.Admin {
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if u.Username == username {
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c.Admin[i] = user
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return c.saveLocked()
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}
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}
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c.Admin = append(c.Admin, user)
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return c.saveLocked()
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}
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func (c *Config) CheckAdmin(username, password string) bool {
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c.mu.Lock()
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defer c.mu.Unlock()
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for _, u := range c.Admin {
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if u.Username == username {
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if bcrypt.CompareHashAndPassword([]byte(u.PasswordHash), []byte(password)) == nil {
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return true
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}
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}
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}
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return false
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}
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func (c *Config) saveLocked() error {
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data, err := yaml.Marshal(c)
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if err != nil {
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return err
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}
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return os.WriteFile(c.path, data, 0640)
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}
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