reset user password

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/labstack/echo/v4 v4.13.4
 	github.com/strukturag/libheif-go v0.0.0-20250130134905-55b3482bea15
 	golang.org/x/crypto v0.44.0
+	golang.org/x/term v0.39.0
 )
 
 require (
@@ -18,7 +19,7 @@ require (
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	golang.org/x/net v0.47.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
 	golang.org/x/text v0.31.0 // indirect
 	golang.org/x/time v0.14.0 // indirect
 )

go.sum

@@ -27,8 +27,10 @@ golang.org/x/crypto v0.44.0/go.mod h1:013i+Nw79BMiQiMsOPcVCB5ZIJbYkerPrGnOa00tvm
 golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
 golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
-golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
+golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/term v0.39.0 h1:RclSuaJf32jOqZz74CkPA9qFuVTX7vhLlpfj/IGWlqY=
+golang.org/x/term v0.39.0/go.mod h1:yxzUCTP/U+FzoxfdKmLaA0RV1WgE0VY7hXBwKtY/4ww=
 golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
 golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
 golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=

internal/auth.go

@@ -112,6 +112,19 @@ func VerifyPassword(user *User, password string) bool {
 	return err == nil
 }
 
+// GetUsernameByID retrieves username by user ID
+func GetUsernameByID(userID string) (string, error) {
+	var username string
+	err := authDB.QueryRow("SELECT username FROM users WHERE id = ?", userID).Scan(&username)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			return "", fmt.Errorf("user not found")
+		}
+		return "", err
+	}
+	return username, nil
+}
+
 // GenerateSessionID generates a random session ID
 func GenerateSessionID() (string, error) {
 	bytes := make([]byte, 32)

main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"flag"
+	"fmt"
 	"log/slog"
 	"net/http"
 	_ "net/http/pprof"
@@ -10,11 +12,16 @@ import (
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 	"github.com/lowcarbdev/sbv/internal"
+	"golang.org/x/term"
 )
 
 var logger *slog.Logger
 
 func main() {
+	// Parse CLI flags
+	resetPassword := flag.String("reset-password", "", "Reset password for the specified username")
+	flag.Parse()
+
 	// Initialize slog logger
 	logger = slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
 		Level: slog.LevelInfo,
@@ -35,6 +42,15 @@ func main() {
 	}
 	logger.Info("Authentication database initialized", "path", authDBPath)
 
+	// Handle password reset if requested
+	if *resetPassword != "" {
+		if err := handleResetPassword(*resetPassword); err != nil {
+			fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+			os.Exit(1)
+		}
+		os.Exit(0)
+	}
+
 	// Create Echo instance
 	e := echo.New()
 
@@ -145,3 +161,45 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+// handleResetPassword prompts for a new password and resets it for the given username
+func handleResetPassword(username string) error {
+	// Look up the user
+	user, err := internal.GetUserByUsername(username)
+	if err != nil {
+		return fmt.Errorf("user '%s' not found", username)
+	}
+
+	// Prompt for new password
+	fmt.Print("Enter new password: ")
+	passwordBytes, err := term.ReadPassword(int(os.Stdin.Fd()))
+	fmt.Println()
+	if err != nil {
+		return fmt.Errorf("failed to read password: %w", err)
+	}
+
+	// Prompt for password confirmation
+	fmt.Print("Confirm new password: ")
+	confirmBytes, err := term.ReadPassword(int(os.Stdin.Fd()))
+	fmt.Println()
+	if err != nil {
+		return fmt.Errorf("failed to read password confirmation: %w", err)
+	}
+
+	password := string(passwordBytes)
+	if password != string(confirmBytes) {
+		return fmt.Errorf("passwords do not match")
+	}
+
+	if len(password) < 6 {
+		return fmt.Errorf("password must be at least 6 characters")
+	}
+
+	// Update the password
+	if err := internal.UpdatePassword(user.ID, password); err != nil {
+		return fmt.Errorf("failed to update password: %w", err)
+	}
+
+	fmt.Printf("Password reset successfully for user '%s'\n", username)
+	return nil
+}