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new.go
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new.go
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// SPDX-License-Identifier: AGPL-3.0-only
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>
package origin
import (
"net/http"
"github.com/labstack/echo/v4"
"github.com/bangumi/server/config/env"
"github.com/bangumi/server/web/res"
)
func New(allowed string) echo.MiddlewareFunc {
if !env.Production {
return dev(allowed)
}
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
if c.Request().Method == http.MethodGet {
return next(c)
}
origin := c.Get(echo.HeaderOrigin)
if origin == "" {
return res.BadRequest("empty origin is not allowed")
}
if origin != allowed {
return res.BadRequest("cross-site request is not allowed")
}
return next(c)
}
}
}
func dev(_ string) echo.MiddlewareFunc {
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
return next(c)
}
}
}