Reset a user password using CLI (#226)

docs/administration/reset-password.md

@@ -0,0 +1,7 @@
+# Reset a user password
+
+To reset a user password, run the following command using the Opengist binary:
+
+```bash
+./opengist admin reset-password <username> <new-password>
+```

internal/cli/admin.go

@@ -0,0 +1,50 @@
+package cli
+
+import (
+	"fmt"
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/utils"
+	"github.com/urfave/cli/v2"
+)
+
+var CmdAdmin = cli.Command{
+	Name:  "admin",
+	Usage: "Admin commands",
+	Subcommands: []*cli.Command{
+		&CmdAdminResetPassword,
+	},
+}
+
+var CmdAdminResetPassword = cli.Command{
+	Name:      "reset-password",
+	Usage:     "Reset the password for a given user",
+	ArgsUsage: "[username] [password]",
+	Action: func(ctx *cli.Context) error {
+		initialize(ctx)
+		if ctx.NArg() < 2 {
+			return fmt.Errorf("username and password are required")
+		}
+		username := ctx.Args().Get(0)
+		plainPassword := ctx.Args().Get(1)
+
+		user, err := db.GetUserByUsername(username)
+		if err != nil {
+			fmt.Printf("Cannot get user %s: %s\n", username, err)
+			return err
+		}
+		password, err := utils.Argon2id.Hash(plainPassword)
+		if err != nil {
+			fmt.Printf("Cannot hash password for user %s: %s\n", username, err)
+			return err
+		}
+		user.Password = password
+
+		if err = user.Update(); err != nil {
+			fmt.Printf("Cannot update password for user %s: %s\n", username, err)
+			return err
+		}
+
+		fmt.Printf("Password for user %s has been reset.\n", username)
+		return nil
+	},
+}

internal/cli/main.go

@@ -48,7 +48,7 @@ func App() error {
 	app.Usage = "A self-hosted pastebin powered by Git."
 	app.HelpName = "opengist"
 
-	app.Commands = []*cli.Command{&CmdVersion, &CmdStart, &CmdHook}
+	app.Commands = []*cli.Command{&CmdVersion, &CmdStart, &CmdHook, &CmdAdmin}
 	app.DefaultCommand = CmdStart.Name
 	app.Flags = []cli.Flag{
 		&ConfigFlag,

internal/utils/argon2id.go

@@ -0,0 +1,76 @@
+package utils
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"golang.org/x/crypto/argon2"
+	"strings"
+)
+
+type Argon2ID struct {
+	format  string
+	version int
+	time    uint32
+	memory  uint32
+	keyLen  uint32
+	saltLen uint32
+	threads uint8
+}
+
+var Argon2id = Argon2ID{
+	format:  "$argon2id$v=%d$m=%d,t=%d,p=%d$%s$%s",
+	version: argon2.Version,
+	time:    1,
+	memory:  64 * 1024,
+	keyLen:  32,
+	saltLen: 16,
+	threads: 4,
+}
+
+func (a Argon2ID) Hash(plain string) (string, error) {
+	salt := make([]byte, a.saltLen)
+	if _, err := rand.Read(salt); err != nil {
+		return "", err
+	}
+
+	hash := argon2.IDKey([]byte(plain), salt, a.time, a.memory, a.threads, a.keyLen)
+
+	return fmt.Sprintf(a.format, a.version, a.memory, a.time, a.threads,
+		base64.RawStdEncoding.EncodeToString(salt),
+		base64.RawStdEncoding.EncodeToString(hash),
+	), nil
+}
+
+func (a Argon2ID) Verify(plain, hash string) (bool, error) {
+	if hash == "" {
+		return false, nil
+	}
+
+	hashParts := strings.Split(hash, "$")
+
+	if len(hashParts) != 6 {
+		return false, errors.New("invalid hash")
+	}
+
+	_, err := fmt.Sscanf(hashParts[3], "m=%d,t=%d,p=%d", &a.memory, &a.time, &a.threads)
+	if err != nil {
+		return false, err
+	}
+
+	salt, err := base64.RawStdEncoding.DecodeString(hashParts[4])
+	if err != nil {
+		return false, err
+	}
+
+	decodedHash, err := base64.RawStdEncoding.DecodeString(hashParts[5])
+	if err != nil {
+		return false, err
+	}
+
+	hashToCompare := argon2.IDKey([]byte(plain), salt, a.time, a.memory, a.threads, uint32(len(decodedHash)))
+
+	return subtle.ConstantTimeCompare(decodedHash, hashToCompare) == 1, nil
+}

internal/web/auth.go

@@ -74,7 +74,7 @@ func processRegister(ctx echo.Context) error {
 
 	user := dto.ToUser()
 
-	password, err := argon2id.hash(user.Password)
+	password, err := utils.Argon2id.Hash(user.Password)
 	if err != nil {
 		return errorRes(500, "Cannot hash password", err)
 	}
@@ -129,7 +129,7 @@ func processLogin(ctx echo.Context) error {
 		return redirect(ctx, "/login")
 	}
 
-	if ok, err := argon2id.verify(password, user.Password); !ok {
+	if ok, err := utils.Argon2id.Verify(password, user.Password); !ok {
 		if err != nil {
 			return errorRes(500, "Cannot check for password", err)
 		}

internal/web/git_http.go

@@ -6,6 +6,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"fmt"
+	"github.com/thomiceli/opengist/internal/utils"
 	"net/http"
 	"os"
 	"os/exec"
@@ -98,7 +99,7 @@ func gitHttp(ctx echo.Context) error {
 					return plainText(ctx, 404, "Check your credentials or make sure you have access to the Gist")
 				}
 
-				if ok, err := argon2id.verify(authPassword, gist.User.Password); !ok || gist.User.Username != authUsername {
+				if ok, err := utils.Argon2id.Verify(authPassword, gist.User.Password); !ok || gist.User.Username != authUsername {
 					if err != nil {
 						return errorRes(500, "Cannot verify password", err)
 					}
@@ -115,7 +116,7 @@ func gitHttp(ctx echo.Context) error {
 					return errorRes(401, "Invalid credentials", nil)
 				}
 
-				if ok, err := argon2id.verify(authPassword, user.Password); !ok {
+				if ok, err := utils.Argon2id.Verify(authPassword, user.Password); !ok {
 					if err != nil {
 						return errorRes(500, "Cannot check for password", err)
 					}

internal/web/settings.go

@@ -131,7 +131,7 @@ func passwordProcess(ctx echo.Context) error {
 		return html(ctx, "settings.html")
 	}
 
-	password, err := argon2id.hash(dto.Password)
+	password, err := utils.Argon2id.Hash(dto.Password)
 	if err != nil {
 		return errorRes(500, "Cannot hash password", err)
 	}

internal/web/util.go

@@ -2,17 +2,12 @@ package web
 
 import (
 	"context"
-	"crypto/rand"
-	"crypto/subtle"
-	"encoding/base64"
 	"errors"
-	"fmt"
 	"github.com/gorilla/sessions"
 	"github.com/labstack/echo/v4"
 	"github.com/thomiceli/opengist/internal/config"
 	"github.com/thomiceli/opengist/internal/db"
 	"github.com/thomiceli/opengist/internal/i18n"
-	"golang.org/x/crypto/argon2"
 	"html/template"
 	"net/http"
 	"strconv"
@@ -219,68 +214,3 @@ func addMetadataToSearchQuery(input, key, value string) string {
 
 	return strings.TrimSpace(resultBuilder.String())
 }
-
-type Argon2ID struct {
-	format  string
-	version int
-	time    uint32
-	memory  uint32
-	keyLen  uint32
-	saltLen uint32
-	threads uint8
-}
-
-var argon2id = Argon2ID{
-	format:  "$argon2id$v=%d$m=%d,t=%d,p=%d$%s$%s",
-	version: argon2.Version,
-	time:    1,
-	memory:  64 * 1024,
-	keyLen:  32,
-	saltLen: 16,
-	threads: 4,
-}
-
-func (a Argon2ID) hash(plain string) (string, error) {
-	salt := make([]byte, a.saltLen)
-	if _, err := rand.Read(salt); err != nil {
-		return "", err
-	}
-
-	hash := argon2.IDKey([]byte(plain), salt, a.time, a.memory, a.threads, a.keyLen)
-
-	return fmt.Sprintf(a.format, a.version, a.memory, a.time, a.threads,
-		base64.RawStdEncoding.EncodeToString(salt),
-		base64.RawStdEncoding.EncodeToString(hash),
-	), nil
-}
-
-func (a Argon2ID) verify(plain, hash string) (bool, error) {
-	if hash == "" {
-		return false, nil
-	}
-
-	hashParts := strings.Split(hash, "$")
-
-	if len(hashParts) != 6 {
-		return false, errors.New("invalid hash")
-	}
-
-	_, err := fmt.Sscanf(hashParts[3], "m=%d,t=%d,p=%d", &a.memory, &a.time, &a.threads)
-	if err != nil {
-		return false, err
-	}
-
-	salt, err := base64.RawStdEncoding.DecodeString(hashParts[4])
-	if err != nil {
-		return false, err
-	}
-
-	decodedHash, err := base64.RawStdEncoding.DecodeString(hashParts[5])
-	if err != nil {
-		return false, err
-	}
-
-	hashToCompare := argon2.IDKey([]byte(plain), salt, a.time, a.memory, a.threads, uint32(len(decodedHash)))
-
-	return subtle.ConstantTimeCompare(decodedHash, hashToCompare) == 1, nil
-}