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			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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| 
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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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| */
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| 
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| package middleware
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| 
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| import "github.com/gin-gonic/gin"
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| 
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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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