forked from mirrors/gotosocial
37 lines
1.5 KiB
Go
37 lines
1.5 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
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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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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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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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*/
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package middleware
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import "github.com/gin-gonic/gin"
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// ExtraHeaders returns a new gin middleware which adds various extra headers to the response.
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func ExtraHeaders() gin.HandlerFunc {
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return func(c *gin.Context) {
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// Inform all callers which server implementation this is.
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c.Header("Server", "gotosocial")
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// Prevent google chrome cohort tracking. Originally this was referred
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// to as FlocBlock. Floc was replaced by Topics in 2022 and the spec says
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// that interest-cohort will also block Topics (as of 2022-Nov).
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//
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// See: https://smartframe.io/blog/google-topics-api-everything-you-need-to-know
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//
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// See: https://github.com/patcg-individual-drafts/topics
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c.Header("Permissions-Policy", "browsing-topics=()")
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}
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}
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