87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package app
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import (
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"crypto/sha256"
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"fmt"
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"owl-blogs/app/repository"
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"owl-blogs/domain/model"
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"strings"
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"golang.org/x/crypto/bcrypt"
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)
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type AuthorService struct {
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repo repository.AuthorRepository
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siteConfigRepo repository.SiteConfigRepository
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}
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func NewAuthorService(repo repository.AuthorRepository, siteConfigRepo repository.SiteConfigRepository) *AuthorService {
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return &AuthorService{repo: repo, siteConfigRepo: siteConfigRepo}
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}
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func hashPassword(password string) (string, error) {
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bytes, err := bcrypt.GenerateFromPassword([]byte(password), 10)
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if err != nil {
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return "", err
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}
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return string(bytes), nil
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}
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func (s *AuthorService) Create(name string, password string) (*model.Author, error) {
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hash, err := hashPassword(password)
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if err != nil {
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return nil, err
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}
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return s.repo.Create(name, hash)
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}
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func (s *AuthorService) FindByName(name string) (*model.Author, error) {
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return s.repo.FindByName(name)
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}
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func (s *AuthorService) Authenticate(name string, password string) bool {
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author, err := s.repo.FindByName(name)
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if err != nil {
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return false
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}
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err = bcrypt.CompareHashAndPassword([]byte(author.PasswordHash), []byte(password))
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return err == nil
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}
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func (s *AuthorService) getSecretKey() string {
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config, err := s.siteConfigRepo.Get()
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if err != nil {
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panic(err)
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}
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if config.Secret == "" {
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config.Secret = RandStringRunes(64)
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err = s.siteConfigRepo.Update(config)
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if err != nil {
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panic(err)
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}
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}
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return config.Secret
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}
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func (s *AuthorService) CreateToken(name string) (string, error) {
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hash := sha256.New()
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_, err := hash.Write([]byte(name + s.getSecretKey()))
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if err != nil {
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return "", err
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}
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return fmt.Sprintf("%s.%x", name, hash.Sum(nil)), nil
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}
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func (s *AuthorService) ValidateToken(token string) (bool, string) {
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parts := strings.Split(token, ".")
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witness := parts[len(parts)-1]
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name := strings.Join(parts[:len(parts)-1], ".")
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hash := sha256.New()
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_, err := hash.Write([]byte(name + s.getSecretKey()))
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if err != nil {
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return false, ""
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}
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return fmt.Sprintf("%x", hash.Sum(nil)) == witness, name
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}
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