1 files changed, 28 insertions, 0 deletions
diff --git a/internal/api/security/flocblock.go b/internal/api/security/flocblock.go
new file mode 100644
index 000000000..7cedcde6b
--- /dev/null
+++ b/internal/api/security/flocblock.go
@@ -0,0 +1,28 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   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, either version 3 of the License, or
+   (at your option) any later version.
+
+   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 <http://www.gnu.org/licenses/>.
+*/
+
+package security
+
+import "github.com/gin-gonic/gin"
+
+// FlocBlock is a middleware that prevents google chrome cohort tracking by
+// writing the Permissions-Policy header after all other parts of the request have been completed.
+// See: https://plausible.io/blog/google-floc
+func (m *Module) FlocBlock(c *gin.Context) {
+	c.Header("Permissions-Policy", "interest-cohort=()")
+}