95 lines
3.3 KiB
Go
95 lines
3.3 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-present Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package routes
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import (
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"net/http"
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"strings"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"code.vikunja.io/api/pkg/models"
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"code.vikunja.io/api/pkg/modules/auth"
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"code.vikunja.io/api/pkg/web"
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echojwt "github.com/labstack/echo-jwt/v5"
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"github.com/labstack/echo/v5"
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)
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// ErrCodeInvalidToken is the error code returned when the JWT is missing,
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// malformed, or expired. The frontend uses this to distinguish "token expired,
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// try refreshing" from other 401s (disabled account, wrong API token, etc.).
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const ErrCodeInvalidToken = 11
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func SetupTokenMiddleware() echo.MiddlewareFunc {
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return echojwt.WithConfig(echojwt.Config{
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SigningKey: []byte(config.ServiceSecret.GetString()),
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Skipper: func(c *echo.Context) bool {
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authHeader := c.Request().Header.Values("Authorization")
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if len(authHeader) == 0 {
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return false // let the jwt middleware handle invalid headers
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}
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for _, s := range authHeader {
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if strings.HasPrefix(s, "Bearer "+models.APITokenPrefix) {
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path := c.Request().URL.Path
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// The MCP endpoint uses POST, GET, and DELETE on the same path
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// (streamable-HTTP transport). CanDoAPIRoute does an exact
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// (method, path) match per permission, so we skip it here
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// and gate inside the MCP handler via token.HasMCPAccess().
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skipRouteCheck := path == "/api/v1/token/test" ||
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path == "/api/v1/mcp" ||
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strings.HasPrefix(path, "/api/v1/mcp/")
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err := checkAPITokenAndPutItInContext(s, c, skipRouteCheck)
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return err == nil
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}
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}
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return false
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},
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ErrorHandler: func(c *echo.Context, err error) error {
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if err != nil {
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return c.JSON(http.StatusUnauthorized, web.HTTPError{
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HTTPCode: http.StatusUnauthorized,
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Code: ErrCodeInvalidToken,
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Message: "missing, malformed, expired or otherwise invalid token provided",
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})
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}
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return nil
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},
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})
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}
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func checkAPITokenAndPutItInContext(tokenHeaderValue string, c *echo.Context, skipRouteCheck bool) error {
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token, u, err := auth.ValidateAPITokenString(strings.TrimPrefix(tokenHeaderValue, "Bearer "))
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if err != nil {
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log.Debugf("[auth] API token validation failed: %v", err)
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return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized")
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}
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if !skipRouteCheck && !models.CanDoAPIRoute(c, token) {
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log.Debugf("[auth] Tried authenticating with token %d but it does not have permission to do this route", token.ID)
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return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized")
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}
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c.Set("api_token", token)
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c.Set("api_user", u)
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return nil
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}
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