1 files changed, 56 insertions, 0 deletions
diff --git a/pkg/auth/basic.go b/pkg/auth/basic.go
new file mode 100644
index 0000000..dafd93f
--- /dev/null
+++ b/pkg/auth/basic.go
@@ -0,0 +1,56 @@
+package auth
+
+import (
+	"errors"
+
+	"github.com/LMBishop/confplanner/pkg/database/sqlc"
+	"github.com/LMBishop/confplanner/pkg/user"
+	"golang.org/x/crypto/bcrypt"
+)
+
+type BasicAuthProvider struct {
+	userService user.Service
+}
+
+func NewBasicAuthProvider(userService user.Service) AuthProvider {
+	return &BasicAuthProvider{
+		userService: userService,
+	}
+}
+
+func (p *BasicAuthProvider) Authenticate(username string, password string) (*sqlc.User, error) {
+	random, err := bcrypt.GenerateFromPassword([]byte("00000000"), bcrypt.DefaultCost)
+	if err != nil {
+		return nil, err
+	}
+
+	u, err := p.userService.GetUserByName(username)
+	if err != nil {
+		if errors.Is(err, user.ErrUserNotFound) {
+			bcrypt.CompareHashAndPassword(random, []byte(password))
+			return nil, nil
+		}
+		return nil, err
+	}
+	if !u.Password.Valid {
+		bcrypt.CompareHashAndPassword(random, []byte(password))
+		return nil, nil
+	}
+
+	if err = bcrypt.CompareHashAndPassword([]byte(u.Password.String), []byte(password)); err != nil {
+		if errors.Is(err, bcrypt.ErrMismatchedHashAndPassword) {
+			return nil, nil
+		}
+		return nil, err
+	}
+
+	return u, nil
+}
+
+func (p *BasicAuthProvider) Name() string {
+	return "Basic"
+}
+
+func (p *BasicAuthProvider) Type() string {
+	return "basic"
+}