From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:32:43 +0200
Subject: Adding upstream version 1:115.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../permissions/browser_canvas_rfp_exclusion.js    | 194 +++++++++++++++++++++
 1 file changed, 194 insertions(+)
 create mode 100644 browser/base/content/test/permissions/browser_canvas_rfp_exclusion.js

(limited to 'browser/base/content/test/permissions/browser_canvas_rfp_exclusion.js')

diff --git a/browser/base/content/test/permissions/browser_canvas_rfp_exclusion.js b/browser/base/content/test/permissions/browser_canvas_rfp_exclusion.js
new file mode 100644
index 0000000000..61c9c5bf84
--- /dev/null
+++ b/browser/base/content/test/permissions/browser_canvas_rfp_exclusion.js
@@ -0,0 +1,194 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Adapted from browser_canvas_fingerprinting_resistance.js
+ */
+"use strict";
+
+const kUrl = "https://example.com/";
+var gPlacedData = false;
+
+function initTab(performReadbackTest) {
+  let contentWindow = content.wrappedJSObject;
+
+  let drawCanvas = (fillStyle, id) => {
+    let contentDocument = contentWindow.document;
+    let width = 64,
+      height = 64;
+    let canvas = contentDocument.createElement("canvas");
+    if (id) {
+      canvas.setAttribute("id", id);
+    }
+    canvas.setAttribute("width", width);
+    canvas.setAttribute("height", height);
+    contentDocument.body.appendChild(canvas);
+
+    let context = canvas.getContext("2d");
+    context.fillStyle = fillStyle;
+    context.fillRect(0, 0, width, height);
+    return canvas;
+  };
+
+  let canvas = drawCanvas("cyan", "canvas-id-canvas");
+
+  let placedData = canvas.toDataURL();
+  if (performReadbackTest) {
+    is(
+      canvas.toDataURL(),
+      placedData,
+      "Reading the placed data twice didn't match"
+    );
+    return placedData;
+  }
+  return undefined;
+}
+
+function disableResistFingerprinting() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["privacy.resistFingerprinting", false],
+      ["privacy.resistFingerprinting.pbmode", false],
+    ],
+  });
+}
+
+function enableResistFingerprinting(RfpNonPbmExclusion, RfpDomainExclusion) {
+  if (RfpNonPbmExclusion && RfpDomainExclusion) {
+    return SpecialPowers.pushPrefEnv({
+      set: [
+        ["privacy.resistFingerprinting.pbmode", true],
+        ["privacy.resistFingerprinting.exemptedDomains", "example.com"],
+      ],
+    });
+  } else if (RfpNonPbmExclusion) {
+    return SpecialPowers.pushPrefEnv({
+      set: [["privacy.resistFingerprinting.pbmode", true]],
+    });
+  } else if (RfpDomainExclusion) {
+    return SpecialPowers.pushPrefEnv({
+      set: [
+        ["privacy.resistFingerprinting", true],
+        ["privacy.resistFingerprinting.exemptedDomains", "example.com"],
+      ],
+    });
+  }
+  return SpecialPowers.pushPrefEnv({
+    set: [["privacy.resistFingerprinting", true]],
+  });
+}
+
+function extractCanvasData(
+  placedData,
+  isPbm,
+  RfpNonPbmExclusion,
+  RfpDomainExclusion
+) {
+  let contentWindow = content.wrappedJSObject;
+  let canvas = contentWindow.document.getElementById("canvas-id-canvas");
+  let canvasData = canvas.toDataURL();
+
+  if (RfpDomainExclusion) {
+    is(
+      canvasData,
+      placedData,
+      `A: RFP, domain exempted, canvas data == placed data (isPbm: ${isPbm}, RfpNonPbmExclusion: ${RfpNonPbmExclusion}, RfpDomainExclusion: ${RfpDomainExclusion})`
+    );
+  } else if (!isPbm && RfpNonPbmExclusion) {
+    is(
+      canvasData,
+      placedData,
+      `B: RFP, nonPBM exempted, not in PBM, canvas data == placed data (isPbm: ${isPbm}, RfpNonPbmExclusion: ${RfpNonPbmExclusion}, RfpDomainExclusion: ${RfpDomainExclusion})`
+    );
+  } else if (isPbm && RfpNonPbmExclusion) {
+    isnot(
+      canvasData,
+      placedData,
+      `C: RFP, nonPBM exempted, in PBM, canvas data != placed data (isPbm: ${isPbm}, RfpNonPbmExclusion: ${RfpNonPbmExclusion}, RfpDomainExclusion: ${RfpDomainExclusion})`
+    );
+  } else {
+    isnot(
+      canvasData,
+      placedData,
+      `D: RFP, domain not exempted, nonPBM not exempted, canvas data != placed data (isPbm: ${isPbm}, RfpNonPbmExclusion: ${RfpNonPbmExclusion}, RfpDomainExclusion: ${RfpDomainExclusion})`
+    );
+  }
+}
+
+async function populatePlacedData() {
+  let win = await BrowserTestUtils.openNewBrowserWindow();
+  await disableResistFingerprinting();
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser: win.gBrowser,
+      url: kUrl,
+    },
+    async function () {
+      let browser = win.gBrowser.selectedBrowser;
+      gPlacedData = await SpecialPowers.spawn(
+        browser,
+        [/* performReadbackTest= */ true],
+        initTab
+      );
+    }
+  );
+  await BrowserTestUtils.closeWindow(win);
+  await SpecialPowers.popPrefEnv();
+}
+
+async function rfpExclusionTestOnCanvas(
+  win,
+  placedData,
+  isPbm,
+  RfpNonPbmExclusion,
+  RfpDomainExclusion
+) {
+  let browser = win.gBrowser.selectedBrowser;
+  await SpecialPowers.spawn(
+    browser,
+    [/* performReadbackTest= */ false],
+    initTab
+  );
+  await SpecialPowers.spawn(
+    browser,
+    [placedData, isPbm, RfpNonPbmExclusion, RfpDomainExclusion],
+    extractCanvasData
+  );
+}
+
+async function testCanvasRfpExclusion(
+  isPbm,
+  RfpNonPbmExclusion,
+  RfpDomainExclusion
+) {
+  let win = await BrowserTestUtils.openNewBrowserWindow({
+    private: isPbm,
+  });
+  await enableResistFingerprinting(RfpNonPbmExclusion, RfpDomainExclusion);
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser: win.gBrowser,
+      url: kUrl,
+    },
+    rfpExclusionTestOnCanvas.bind(
+      null,
+      win,
+      gPlacedData,
+      isPbm,
+      RfpNonPbmExclusion,
+      RfpDomainExclusion
+    )
+  );
+  await BrowserTestUtils.closeWindow(win);
+  await SpecialPowers.popPrefEnv();
+}
+
+add_task(populatePlacedData.bind(null));
+add_task(testCanvasRfpExclusion.bind(null, false, false, false));
+add_task(testCanvasRfpExclusion.bind(null, false, false, true));
+add_task(testCanvasRfpExclusion.bind(null, false, true, false));
+add_task(testCanvasRfpExclusion.bind(null, false, true, true));
+add_task(testCanvasRfpExclusion.bind(null, true, false, false));
+add_task(testCanvasRfpExclusion.bind(null, true, false, true));
+add_task(testCanvasRfpExclusion.bind(null, true, true, false));
+add_task(testCanvasRfpExclusion.bind(null, true, true, true));
-- 
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