Refactor server code (#407)

internal/web/handlers/auth/mfa.go

@@ -0,0 +1,22 @@
+package auth
+
+import (
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/web/context"
+)
+
+func Mfa(ctx *context.Context) error {
+	var err error
+
+	user := db.User{ID: ctx.GetSession().Values["mfaID"].(uint)}
+
+	var hasWebauthn, hasTotp bool
+	if hasWebauthn, hasTotp, err = user.HasMFA(); err != nil {
+		return ctx.ErrorRes(500, "Cannot check for user MFA", err)
+	}
+
+	ctx.SetData("hasWebauthn", hasWebauthn)
+	ctx.SetData("hasTotp", hasTotp)
+
+	return ctx.Html("mfa.html")
+}

internal/web/handlers/auth/oauth.go

@@ -0,0 +1,166 @@
+package auth
+
+import (
+	"crypto/md5"
+	"errors"
+	"fmt"
+	"github.com/rs/zerolog/log"
+	"github.com/thomiceli/opengist/internal/auth/oauth"
+	"github.com/thomiceli/opengist/internal/config"
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/web/context"
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
+	"gorm.io/gorm"
+	"strings"
+)
+
+func Oauth(ctx *context.Context) error {
+	providerStr := ctx.Param("provider")
+
+	httpProtocol := "http"
+	if ctx.Request().TLS != nil || ctx.Request().Header.Get("X-Forwarded-Proto") == "https" {
+		httpProtocol = "https"
+	}
+
+	forwarded_hdr := ctx.Request().Header.Get("Forwarded")
+	if forwarded_hdr != "" {
+		fields := strings.Split(forwarded_hdr, ";")
+		fwd := make(map[string]string)
+		for _, v := range fields {
+			p := strings.Split(v, "=")
+			fwd[p[0]] = p[1]
+		}
+		val, ok := fwd["proto"]
+		if ok && val == "https" {
+			httpProtocol = "https"
+		}
+	}
+
+	var opengistUrl string
+	if config.C.ExternalUrl != "" {
+		opengistUrl = config.C.ExternalUrl
+	} else {
+		opengistUrl = httpProtocol + "://" + ctx.Request().Host
+	}
+
+	provider, err := oauth.DefineProvider(providerStr, opengistUrl)
+	if err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.oauth-unsupported"), nil)
+	}
+
+	if err = provider.RegisterProvider(); err != nil {
+		return ctx.ErrorRes(500, "Cannot create provider", err)
+	}
+
+	provider.BeginAuthHandler(ctx)
+	return nil
+}
+
+func OauthCallback(ctx *context.Context) error {
+	provider, err := oauth.CompleteUserAuth(ctx)
+	if err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.complete-oauth-login", err.Error()), err)
+	}
+
+	currUser := ctx.User
+	// if user is logged in, link account to user and update its avatar URL
+	if currUser != nil {
+		provider.UpdateUserDB(currUser)
+
+		if err = currUser.Update(); err != nil {
+			return ctx.ErrorRes(500, "Cannot update user "+cases.Title(language.English).String(provider.GetProvider())+" id", err)
+		}
+
+		ctx.AddFlash(ctx.Tr("flash.auth.account-linked-oauth", cases.Title(language.English).String(provider.GetProvider())), "success")
+		return ctx.RedirectTo("/settings")
+	}
+
+	user := provider.GetProviderUser()
+	userDB, err := db.GetUserByProvider(user.UserID, provider.GetProvider())
+	// if user is not in database, create it
+	if err != nil {
+		if ctx.GetData("DisableSignup") == true {
+			return ctx.ErrorRes(403, ctx.Tr("error.signup-disabled"), nil)
+		}
+
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return ctx.ErrorRes(500, "Cannot get user", err)
+		}
+
+		if user.NickName == "" {
+			user.NickName = strings.Split(user.Email, "@")[0]
+		}
+
+		userDB = &db.User{
+			Username: user.NickName,
+			Email:    user.Email,
+			MD5Hash:  fmt.Sprintf("%x", md5.Sum([]byte(strings.ToLower(strings.TrimSpace(user.Email))))),
+		}
+
+		// set provider id and avatar URL
+		provider.UpdateUserDB(userDB)
+
+		if err = userDB.Create(); err != nil {
+			if db.IsUniqueConstraintViolation(err) {
+				ctx.AddFlash(ctx.Tr("flash.auth.username-exists"), "error")
+				return ctx.RedirectTo("/login")
+			}
+
+			return ctx.ErrorRes(500, "Cannot create user", err)
+		}
+
+		if userDB.ID == 1 {
+			if err = userDB.SetAdmin(); err != nil {
+				return ctx.ErrorRes(500, "Cannot set user admin", err)
+			}
+		}
+
+		keys, err := provider.GetProviderUserSSHKeys()
+		if err != nil {
+			ctx.AddFlash(ctx.Tr("flash.auth.user-sshkeys-not-retrievable"), "error")
+			log.Error().Err(err).Msg("Could not get user keys")
+		} else {
+			for _, key := range keys {
+				sshKey := db.SSHKey{
+					Title:   "Added from " + user.Provider,
+					Content: key,
+					User:    *userDB,
+				}
+
+				if err = sshKey.Create(); err != nil {
+					ctx.AddFlash(ctx.Tr("flash.auth.user-sshkeys-not-created"), "error")
+					log.Error().Err(err).Msg("Could not create ssh key")
+				}
+			}
+		}
+	}
+
+	sess := ctx.GetSession()
+	sess.Values["user"] = userDB.ID
+	ctx.SaveSession(sess)
+	ctx.DeleteCsrfCookie()
+
+	return ctx.RedirectTo("/")
+}
+
+func OauthUnlink(ctx *context.Context) error {
+	providerStr := ctx.Param("provider")
+	provider, err := oauth.DefineProvider(ctx.Param("provider"), "")
+	if err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.oauth-unsupported"), nil)
+	}
+
+	currUser := ctx.User
+
+	if provider.UserHasProvider(currUser) {
+		if err := currUser.DeleteProviderID(providerStr); err != nil {
+			return ctx.ErrorRes(500, "Cannot unlink account from "+cases.Title(language.English).String(providerStr), err)
+		}
+
+		ctx.AddFlash(ctx.Tr("flash.auth.account-unlinked-oauth", cases.Title(language.English).String(providerStr)), "success")
+		return ctx.RedirectTo("/settings")
+	}
+
+	return ctx.RedirectTo("/settings")
+}

internal/web/handlers/auth/password.go

@@ -0,0 +1,170 @@
+package auth
+
+import (
+	"errors"
+	"github.com/rs/zerolog/log"
+	passwordpkg "github.com/thomiceli/opengist/internal/auth/password"
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/i18n"
+	"github.com/thomiceli/opengist/internal/validator"
+	"github.com/thomiceli/opengist/internal/web/context"
+	"gorm.io/gorm"
+)
+
+func Register(ctx *context.Context) error {
+	disableSignup := ctx.GetData("DisableSignup")
+	disableForm := ctx.GetData("DisableLoginForm")
+
+	code := ctx.QueryParam("code")
+	if code != "" {
+		if invitation, err := db.GetInvitationByCode(code); err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+			return ctx.ErrorRes(500, "Cannot check for invitation code", err)
+		} else if invitation != nil && invitation.IsUsable() {
+			disableSignup = false
+		}
+	}
+
+	ctx.SetData("title", ctx.TrH("auth.new-account"))
+	ctx.SetData("htmlTitle", ctx.TrH("auth.new-account"))
+	ctx.SetData("disableForm", disableForm)
+	ctx.SetData("disableSignup", disableSignup)
+	ctx.SetData("isLoginPage", false)
+	return ctx.Html("auth_form.html")
+}
+
+func ProcessRegister(ctx *context.Context) error {
+	disableSignup := ctx.GetData("DisableSignup")
+
+	code := ctx.QueryParam("code")
+	invitation, err := db.GetInvitationByCode(code)
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return ctx.ErrorRes(500, "Cannot check for invitation code", err)
+	} else if invitation.ID != 0 && invitation.IsUsable() {
+		disableSignup = false
+	}
+
+	if disableSignup == true {
+		return ctx.ErrorRes(403, ctx.Tr("error.signup-disabled"), nil)
+	}
+
+	if ctx.GetData("DisableLoginForm") == true {
+		return ctx.ErrorRes(403, ctx.Tr("error.signup-disabled-form"), nil)
+	}
+
+	ctx.SetData("title", ctx.TrH("auth.new-account"))
+	ctx.SetData("htmlTitle", ctx.TrH("auth.new-account"))
+
+	sess := ctx.GetSession()
+
+	dto := new(db.UserDTO)
+	if err := ctx.Bind(dto); err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.cannot-bind-data"), err)
+	}
+
+	if err := ctx.Validate(dto); err != nil {
+		ctx.AddFlash(validator.ValidationMessages(&err, ctx.GetData("locale").(*i18n.Locale)), "error")
+		return ctx.Html("auth_form.html")
+	}
+
+	if exists, err := db.UserExists(dto.Username); err != nil || exists {
+		ctx.AddFlash(ctx.Tr("flash.auth.username-exists"), "error")
+		return ctx.Html("auth_form.html")
+	}
+
+	user := dto.ToUser()
+
+	password, err := passwordpkg.HashPassword(user.Password)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot hash password", err)
+	}
+	user.Password = password
+
+	if err = user.Create(); err != nil {
+		return ctx.ErrorRes(500, "Cannot create user", err)
+	}
+
+	if user.ID == 1 {
+		if err = user.SetAdmin(); err != nil {
+			return ctx.ErrorRes(500, "Cannot set user admin", err)
+		}
+	}
+
+	if invitation.ID != 0 {
+		if err := invitation.Use(); err != nil {
+			return ctx.ErrorRes(500, "Cannot use invitation", err)
+		}
+	}
+
+	sess.Values["user"] = user.ID
+	ctx.SaveSession(sess)
+
+	return ctx.RedirectTo("/")
+}
+
+func Login(ctx *context.Context) error {
+	ctx.SetData("title", ctx.TrH("auth.login"))
+	ctx.SetData("htmlTitle", ctx.TrH("auth.login"))
+	ctx.SetData("disableForm", ctx.GetData("DisableLoginForm"))
+	ctx.SetData("isLoginPage", true)
+	return ctx.Html("auth_form.html")
+}
+
+func ProcessLogin(ctx *context.Context) error {
+	if ctx.GetData("DisableLoginForm") == true {
+		return ctx.ErrorRes(403, ctx.Tr("error.login-disabled-form"), nil)
+	}
+
+	var err error
+	sess := ctx.GetSession()
+
+	dto := &db.UserDTO{}
+	if err = ctx.Bind(dto); err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.cannot-bind-data"), err)
+	}
+	password := dto.Password
+
+	var user *db.User
+
+	if user, err = db.GetUserByUsername(dto.Username); err != nil {
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return ctx.ErrorRes(500, "Cannot get user", err)
+		}
+		log.Warn().Msg("Invalid HTTP authentication attempt from " + ctx.RealIP())
+		ctx.AddFlash(ctx.Tr("flash.auth.invalid-credentials"), "error")
+		return ctx.RedirectTo("/login")
+	}
+
+	if ok, err := passwordpkg.VerifyPassword(password, user.Password); !ok {
+		if err != nil {
+			return ctx.ErrorRes(500, "Cannot check for password", err)
+		}
+		log.Warn().Msg("Invalid HTTP authentication attempt from " + ctx.RealIP())
+		ctx.AddFlash(ctx.Tr("flash.auth.invalid-credentials"), "error")
+		return ctx.RedirectTo("/login")
+	}
+
+	// handle MFA
+	var hasWebauthn, hasTotp bool
+	if hasWebauthn, hasTotp, err = user.HasMFA(); err != nil {
+		return ctx.ErrorRes(500, "Cannot check for user MFA", err)
+	}
+	if hasWebauthn || hasTotp {
+		sess.Values["mfaID"] = user.ID
+		sess.Options.MaxAge = 5 * 60 // 5 minutes
+		ctx.SaveSession(sess)
+		return ctx.RedirectTo("/mfa")
+	}
+
+	sess.Values["user"] = user.ID
+	sess.Options.MaxAge = 60 * 60 * 24 * 365 // 1 year
+	ctx.SaveSession(sess)
+	ctx.DeleteCsrfCookie()
+
+	return ctx.RedirectTo("/")
+}
+
+func Logout(ctx *context.Context) error {
+	ctx.DeleteSession()
+	ctx.DeleteCsrfCookie()
+	return ctx.RedirectTo("/all")
+}

internal/web/handlers/auth/totp.go

@@ -0,0 +1,177 @@
+package auth
+
+import (
+	"github.com/thomiceli/opengist/internal/auth/totp"
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/web/context"
+	"net/url"
+)
+
+func BeginTotp(ctx *context.Context) error {
+	user := ctx.User
+
+	if _, hasTotp, err := user.HasMFA(); err != nil {
+		return ctx.ErrorRes(500, "Cannot check for user MFA", err)
+	} else if hasTotp {
+		ctx.AddFlash(ctx.Tr("auth.totp.already-enabled"), "error")
+		return ctx.RedirectTo("/settings")
+	}
+
+	ogUrl, err := url.Parse(ctx.GetData("baseHttpUrl").(string))
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot parse base URL", err)
+	}
+
+	sess := ctx.GetSession()
+	generatedSecret, _ := sess.Values["generatedSecret"].([]byte)
+
+	totpSecret, qrcode, err, generatedSecret := totp.GenerateQRCode(ctx.User.Username, ogUrl.Hostname(), generatedSecret)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot generate TOTP QR code", err)
+	}
+	sess.Values["totpSecret"] = totpSecret
+	sess.Values["generatedSecret"] = generatedSecret
+	ctx.SaveSession(sess)
+
+	ctx.SetData("totpSecret", totpSecret)
+	ctx.SetData("totpQrcode", qrcode)
+
+	return ctx.Html("totp.html")
+
+}
+
+func FinishTotp(ctx *context.Context) error {
+	user := ctx.User
+
+	if _, hasTotp, err := user.HasMFA(); err != nil {
+		return ctx.ErrorRes(500, "Cannot check for user MFA", err)
+	} else if hasTotp {
+		ctx.AddFlash(ctx.Tr("auth.totp.already-enabled"), "error")
+		return ctx.RedirectTo("/settings")
+	}
+
+	dto := &db.TOTPDTO{}
+	if err := ctx.Bind(dto); err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.cannot-bind-data"), err)
+	}
+
+	if err := ctx.Validate(dto); err != nil {
+		ctx.AddFlash("Invalid secret", "error")
+		return ctx.RedirectTo("/settings/totp/generate")
+	}
+
+	sess := ctx.GetSession()
+	secret, ok := sess.Values["totpSecret"].(string)
+	if !ok {
+		return ctx.ErrorRes(500, "Cannot get TOTP secret from session", nil)
+	}
+
+	if !totp.Validate(dto.Code, secret) {
+		ctx.AddFlash(ctx.Tr("auth.totp.invalid-code"), "error")
+
+		return ctx.RedirectTo("/settings/totp/generate")
+	}
+
+	userTotp := &db.TOTP{
+		UserID: ctx.User.ID,
+	}
+	if err := userTotp.StoreSecret(secret); err != nil {
+		return ctx.ErrorRes(500, "Cannot store TOTP secret", err)
+	}
+
+	if err := userTotp.Create(); err != nil {
+		return ctx.ErrorRes(500, "Cannot create TOTP", err)
+	}
+
+	ctx.AddFlash("TOTP successfully enabled", "success")
+	codes, err := userTotp.GenerateRecoveryCodes()
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot generate recovery codes", err)
+	}
+
+	delete(sess.Values, "totpSecret")
+	delete(sess.Values, "generatedSecret")
+	ctx.SaveSession(sess)
+
+	ctx.SetData("recoveryCodes", codes)
+	return ctx.Html("totp.html")
+}
+
+func AssertTotp(ctx *context.Context) error {
+	var err error
+	dto := &db.TOTPDTO{}
+	if err := ctx.Bind(dto); err != nil {
+		return ctx.ErrorRes(400, ctx.Tr("error.cannot-bind-data"), err)
+	}
+
+	if err := ctx.Validate(dto); err != nil {
+		ctx.AddFlash(ctx.Tr("auth.totp.invalid-code"), "error")
+		return ctx.RedirectTo("/mfa")
+	}
+
+	sess := ctx.GetSession()
+	userId := sess.Values["mfaID"].(uint)
+	var userTotp *db.TOTP
+	if userTotp, err = db.GetTOTPByUserID(userId); err != nil {
+		return ctx.ErrorRes(500, "Cannot get TOTP by UID", err)
+	}
+
+	redirectUrl := "/"
+
+	var validCode, validRecoveryCode bool
+	if validCode, err = userTotp.ValidateCode(dto.Code); err != nil {
+		return ctx.ErrorRes(500, "Cannot validate TOTP code", err)
+	}
+	if !validCode {
+		validRecoveryCode, err = userTotp.ValidateRecoveryCode(dto.Code)
+		if err != nil {
+			return ctx.ErrorRes(500, "Cannot validate TOTP code", err)
+		}
+
+		if !validRecoveryCode {
+			ctx.AddFlash(ctx.Tr("auth.totp.invalid-code"), "error")
+			return ctx.RedirectTo("/mfa")
+		}
+
+		ctx.AddFlash(ctx.Tr("auth.totp.code-used", dto.Code), "warning")
+		redirectUrl = "/settings"
+	}
+
+	sess.Values["user"] = userId
+	sess.Options.MaxAge = 60 * 60 * 24 * 365 // 1 year
+	delete(sess.Values, "mfaID")
+	ctx.SaveSession(sess)
+
+	return ctx.RedirectTo(redirectUrl)
+}
+
+func DisableTotp(ctx *context.Context) error {
+	user := ctx.User
+	userTotp, err := db.GetTOTPByUserID(user.ID)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot get TOTP by UID", err)
+	}
+
+	if err = userTotp.Delete(); err != nil {
+		return ctx.ErrorRes(500, "Cannot delete TOTP", err)
+	}
+
+	ctx.AddFlash(ctx.Tr("auth.totp.disabled"), "success")
+	return ctx.RedirectTo("/settings")
+}
+
+func RegenerateTotpRecoveryCodes(ctx *context.Context) error {
+	user := ctx.User
+	userTotp, err := db.GetTOTPByUserID(user.ID)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot get TOTP by UID", err)
+	}
+
+	codes, err := userTotp.GenerateRecoveryCodes()
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot generate recovery codes", err)
+	}
+
+	ctx.SetData("recoveryCodes", codes)
+	return ctx.Html("totp.html")
+}

internal/web/handlers/auth/webauthn.go

@@ -0,0 +1,151 @@
+package auth
+
+import (
+	"bytes"
+	gojson "encoding/json"
+	"github.com/thomiceli/opengist/internal/auth/webauthn"
+	"github.com/thomiceli/opengist/internal/db"
+	"github.com/thomiceli/opengist/internal/web/context"
+	"io"
+)
+
+func BeginWebAuthnBinding(ctx *context.Context) error {
+	credsCreation, jsonWaSession, err := webauthn.BeginBinding(ctx.User)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot begin WebAuthn registration", err)
+	}
+
+	sess := ctx.GetSession()
+	sess.Values["webauthn_registration_session"] = jsonWaSession
+	sess.Options.MaxAge = 5 * 60 // 5 minutes
+	ctx.SaveSession(sess)
+
+	return ctx.JSON(200, credsCreation)
+}
+
+func FinishWebAuthnBinding(ctx *context.Context) error {
+	sess := ctx.GetSession()
+	jsonWaSession, ok := sess.Values["webauthn_registration_session"].([]byte)
+	if !ok {
+		return ctx.ErrorRes(401, "Cannot get WebAuthn registration session", nil)
+	}
+
+	user := ctx.User
+
+	// extract passkey name from request
+	body, err := io.ReadAll(ctx.Request().Body)
+	if err != nil {
+		return ctx.ErrorRes(400, "Failed to read request body", err)
+	}
+	ctx.Request().Body.Close()
+	ctx.Request().Body = io.NopCloser(bytes.NewBuffer(body))
+
+	dto := new(db.CrendentialDTO)
+	_ = gojson.Unmarshal(body, &dto)
+
+	if err = ctx.Validate(dto); err != nil {
+		return ctx.ErrorRes(400, "Invalid request", err)
+	}
+	passkeyName := dto.PasskeyName
+	if passkeyName == "" {
+		passkeyName = "WebAuthn"
+	}
+
+	waCredential, err := webauthn.FinishBinding(user, jsonWaSession, ctx.Request())
+	if err != nil {
+		return ctx.ErrorRes(403, "Failed binding attempt for passkey", err)
+	}
+
+	if _, err = db.CreateFromCrendential(user.ID, passkeyName, waCredential); err != nil {
+		return ctx.ErrorRes(500, "Cannot create WebAuthn credential on database", err)
+	}
+
+	delete(sess.Values, "webauthn_registration_session")
+	ctx.SaveSession(sess)
+
+	ctx.AddFlash(ctx.Tr("flash.auth.passkey-registred", passkeyName), "success")
+	return ctx.Json([]string{"OK"})
+}
+
+func BeginWebAuthnLogin(ctx *context.Context) error {
+	credsCreation, jsonWaSession, err := webauthn.BeginDiscoverableLogin()
+	if err != nil {
+		return ctx.ErrorRes(401, "Cannot begin WebAuthn login", err)
+	}
+
+	sess := ctx.GetSession()
+	sess.Values["webauthn_login_session"] = jsonWaSession
+	sess.Options.MaxAge = 5 * 60 // 5 minutes
+	ctx.SaveSession(sess)
+
+	return ctx.Json(credsCreation)
+}
+
+func FinishWebAuthnLogin(ctx *context.Context) error {
+	sess := ctx.GetSession()
+	sessionData, ok := sess.Values["webauthn_login_session"].([]byte)
+	if !ok {
+		return ctx.ErrorRes(401, "Cannot get WebAuthn login session", nil)
+	}
+
+	userID, err := webauthn.FinishDiscoverableLogin(sessionData, ctx.Request())
+	if err != nil {
+		return ctx.ErrorRes(403, "Failed authentication attempt for passkey", err)
+	}
+
+	sess.Values["user"] = userID
+	sess.Options.MaxAge = 60 * 60 * 24 * 365 // 1 year
+
+	delete(sess.Values, "webauthn_login_session")
+	ctx.SaveSession(sess)
+
+	return ctx.Json([]string{"OK"})
+}
+
+func BeginWebAuthnAssertion(ctx *context.Context) error {
+	sess := ctx.GetSession()
+
+	ogUser, err := db.GetUserById(sess.Values["mfaID"].(uint))
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot get user", err)
+	}
+
+	credsCreation, jsonWaSession, err := webauthn.BeginLogin(ogUser)
+	if err != nil {
+		return ctx.ErrorRes(401, "Cannot begin WebAuthn login", err)
+	}
+
+	sess.Values["webauthn_assertion_session"] = jsonWaSession
+	sess.Options.MaxAge = 5 * 60 // 5 minutes
+	ctx.SaveSession(sess)
+
+	return ctx.Json(credsCreation)
+}
+
+func FinishWebAuthnAssertion(ctx *context.Context) error {
+	sess := ctx.GetSession()
+	sessionData, ok := sess.Values["webauthn_assertion_session"].([]byte)
+	if !ok {
+		return ctx.ErrorRes(401, "Cannot get WebAuthn assertion session", nil)
+	}
+
+	userId := sess.Values["mfaID"].(uint)
+
+	ogUser, err := db.GetUserById(userId)
+	if err != nil {
+		return ctx.ErrorRes(500, "Cannot get user", err)
+	}
+
+	if err = webauthn.FinishLogin(ogUser, sessionData, ctx.Request()); err != nil {
+		return ctx.ErrorRes(403, "Failed authentication attempt for passkey", err)
+	}
+
+	sess.Values["user"] = userId
+	sess.Options.MaxAge = 60 * 60 * 24 * 365 // 1 year
+
+	delete(sess.Values, "webauthn_assertion_session")
+	delete(sess.Values, "mfaID")
+	ctx.SaveSession(sess)
+
+	return ctx.Json([]string{"OK"})
+}