40 lines
1.3 KiB
Go
40 lines
1.3 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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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 <http://www.gnu.org/licenses/>.
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package middleware
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import (
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"net/http"
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"github.com/gin-gonic/gin"
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apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
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)
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// UserAgent returns a gin middleware which aborts requests with
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// empty user agent strings, returning code 418 - I'm a teapot.
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func UserAgent() gin.HandlerFunc {
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// todo: make this configurable
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var rsp = []byte(`{"error": "I'm a teapot: no user-agent sent with request"}`)
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return func(c *gin.Context) {
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if ua := c.Request.UserAgent(); ua == "" {
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apiutil.Data(c,
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http.StatusTeapot, apiutil.AppJSON, rsp)
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c.Abort()
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}
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}
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}
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