initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2018 claustromaniac
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

etag-stoppa.js

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+browser.webRequest.onHeadersReceived.addListener(
+	function(d) {
+		if (!d.responseHeaders) return;
+		let headers = d.responseHeaders;
+		let newHeaders = [];
+		for (let i in headers) {
+			if (headers[i].name.toLowerCase() !== 'etag') {
+				newHeaders.push(headers[i]);
+			}
+		}
+		return {responseHeaders: newHeaders};
+	},
+	{urls: ["<all_urls>"]}, ['blocking', 'responseHeaders']
+);

manifest.json

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+{
+	"manifest_version": 2,
+	"name": "ETag Stoppa",
+	"description": "Prevents Firefox from storing ETags by removing ETag response headers unconditionally and without exceptions.",
+	"version": "0.1",
+	"applications": {
+		"gecko": {
+			"id": "[email protected]",
+			"strict_min_version": "52.0"
+		}
+	},
+    "icons": {
+         "32": "icons/etag32.png",
+         "64": "icons/etag64.png"
+    },
+	"permissions": [
+		"webRequest",
+		"webRequestBlocking",
+		"<all_urls>"
+	],
+	"background": {
+		"scripts": [ "etag-stoppa.js" ]
+	}
+}