/* 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/. */

var classifierTester = {
  URL_PATH:
    "/browser/toolkit/components/url-classifier/tests/browser/flash_block_frame.html",
  OBJECT_ID: "testObject",
  IFRAME_ID: "testFrame",
  FLASHBLOCK_ENABLE_PREF: "plugins.flashBlock.enabled",
  FLASH_PLUGIN_USER_SETTING_PREF: "plugin.state.flash",
  URLCLASSIFIER_DISALLOW_COMPLETIONS_PREF: "urlclassifier.disallow_completions",
  FISSION_PREF: "fission.autostart",
  NEVER_ACTIVATE_PREF_VALUE: 0,
  ASK_TO_ACTIVATE_PREF_VALUE: 1,
  ALWAYS_ACTIVATE_PREF_VALUE: 2,

  dbUrls: [
    {
      url: "flashallow.example.com/",
      db: "test-flashallow-simple",
      pref: "urlclassifier.flashAllowTable",
    },
    {
      url: "exception.flashallow.example.com/",
      db: "testexcept-flashallow-simple",
      pref: "urlclassifier.flashAllowExceptTable",
    },
    {
      url: "flashblock.example.com/",
      db: "test-flash-simple",
      pref: "urlclassifier.flashTable",
    },
    {
      url: "exception.flashblock.example.com/",
      db: "testexcept-flash-simple",
      pref: "urlclassifier.flashExceptTable",
    },
    {
      url: "subdocument.example.com/",
      db: "test-flashsubdoc-simple",
      pref: "urlclassifier.flashSubDocTable",
    },
    {
      url: "exception.subdocument.example.com/",
      db: "testexcept-flashsubdoc-simple",
      pref: "urlclassifier.flashSubDocExceptTable",
    },
  ],

  setPrefs({
    setDBs = true,
    flashBlockEnable = true,
    flashSetting = classifierTester.ALWAYS_ACTIVATE_PREF_VALUE,
  } = {}) {
    if (setDBs) {
      let DBs = [];

      for (let dbData of classifierTester.dbUrls) {
        Services.prefs.setCharPref(dbData.pref, dbData.db);
        DBs.push(dbData.db);
      }

      let completions = Services.prefs.getCharPref(
        classifierTester.URLCLASSIFIER_DISALLOW_COMPLETIONS_PREF
      );
      completions += "," + DBs.join(",");
      Services.prefs.setCharPref(
        classifierTester.URLCLASSIFIER_DISALLOW_COMPLETIONS_PREF,
        completions
      );
    }

    Services.prefs.setBoolPref(
      classifierTester.FLASHBLOCK_ENABLE_PREF,
      flashBlockEnable
    );
    Services.prefs.setIntPref(
      classifierTester.FLASH_PLUGIN_USER_SETTING_PREF,
      flashSetting
    );
  },

  unsetPrefs() {
    for (let dbData of classifierTester.dbUrls) {
      Services.prefs.clearUserPref(dbData.pref);
    }

    Services.prefs.clearUserPref(
      classifierTester.URLCLASSIFIER_DISALLOW_COMPLETIONS_PREF
    );
    Services.prefs.clearUserPref(classifierTester.FLASHBLOCK_ENABLE_PREF);
    Services.prefs.clearUserPref(
      classifierTester.FLASH_PLUGIN_USER_SETTING_PREF
    );
  },

  // The |domains| property describes the domains of the nested documents making
  // up the page. |domains[0]| represents the domain in the URL bar. The last
  // domain in the list is the domain of the most deeply nested iframe.
  // Only the plugin in the most deeply nested document will be checked.
  testCases: [
    {
      name: "Unknown domain",
      domains: ["http://example.com"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Nested unknown domains",
      domains: ["http://example.com", "http://example.org"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Allowed domain",
      domains: ["http://flashallow.example.com"],
      expectedFlashClassification: "allowed",
    },
    {
      name: "Allowed nested domain",
      domains: ["http://example.com", "http://flashallow.example.com"],
      expectedFlashClassification: "allowed",
    },
    {
      name: "Subdocument of allowed domain",
      domains: ["http://flashallow.example.com", "http://example.com"],
      expectedFlashClassification: "allowed",
    },
    {
      name: "Exception to allowed domain",
      domains: ["http://exception.flashallow.example.com"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Blocked domain",
      domains: ["http://flashblock.example.com"],
      expectedFlashClassification: "denied",
    },
    {
      name: "Nested blocked domain",
      domains: ["http://example.com", "http://flashblock.example.com"],
      expectedFlashClassification: "denied",
    },
    {
      name: "Subdocument of blocked subdocument",
      domains: [
        "http://example.com",
        "http://flashblock.example.com",
        "http://example.com",
      ],
      expectedFlashClassification: "denied",
    },
    {
      name: "Blocked subdocument nested among in allowed documents",
      domains: [
        "http://flashallow.example.com",
        "http://flashblock.example.com",
        "http://flashallow.example.com",
      ],
      expectedFlashClassification: "denied",
    },
    {
      name: "Exception to blocked domain",
      domains: ["http://exception.flashblock.example.com"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Sub-document blocked domain in top-level context",
      domains: ["http://subdocument.example.com"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Sub-document blocked domain",
      domains: ["http://example.com", "http://subdocument.example.com"],
      expectedFlashClassification: "denied",
    },
    {
      name: "Sub-document blocked domain in non-Third-Party context",
      domains: [
        "http://subdocument.example.com",
        "http://subdocument.example.com",
      ],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Sub-document blocked domain differing only by scheme",
      domains: [
        "http://subdocument.example.com",
        "https://subdocument.example.com",
      ],
      expectedFlashClassification: "denied",
    },
    {
      name: "Sub-document blocked subdocument of an allowed domain",
      domains: [
        "http://flashallow.example.com",
        "http://subdocument.example.com",
      ],
      expectedFlashClassification: "denied",
    },
    {
      name: "Subdocument of Sub-document blocked domain",
      domains: [
        "http://example.com",
        "http://subdocument.example.com",
        "http://example.com",
      ],
      expectedFlashClassification: "denied",
    },
    {
      name: "Sub-document exception in top-level context",
      domains: ["http://exception.subdocument.example.com"],
      expectedFlashClassification: "unknown",
    },
    {
      name: "Sub-document blocked domain exception",
      domains: [
        "http://example.com",
        "http://exception.subdocument.example.com",
      ],
      expectedFlashClassification: "unknown",
    },
  ],

  // Returns null if this value should not be verified given the combination
  // of inputs
  expectedPluginFallbackType(classification, flashSetting) {
    switch (classification) {
      case "unknown":
        if (flashSetting == classifierTester.ALWAYS_ACTIVATE_PREF_VALUE) {
          return null;
        } else if (
          flashSetting == classifierTester.ASK_TO_ACTIVATE_PREF_VALUE
        ) {
          return Ci.nsIObjectLoadingContent.PLUGIN_CLICK_TO_PLAY;
        } else if (flashSetting == classifierTester.NEVER_ACTIVATE_PREF_VALUE) {
          return Ci.nsIObjectLoadingContent.PLUGIN_DISABLED;
        }
        break;
      case "allowed":
        if (flashSetting == classifierTester.NEVER_ACTIVATE_PREF_VALUE) {
          return Ci.nsIObjectLoadingContent.PLUGIN_DISABLED;
        }
        return null;
      case "denied":
        return Ci.nsIObjectLoadingContent.PLUGIN_USER_DISABLED;
    }
    throw new Error("Invalid classification or flash setting");
  },

  // Returns null if this value should not be verified given the combination
  // of inputs
  expectedActivated(classification, flashSetting) {
    switch (classification) {
      case "unknown":
        return flashSetting == classifierTester.ALWAYS_ACTIVATE_PREF_VALUE;
      case "allowed":
        return flashSetting != classifierTester.NEVER_ACTIVATE_PREF_VALUE;
      case "denied":
        return false;
    }
    throw new Error("Invalid classification or flash setting");
  },

  // Returns null if this value should not be verified given the combination
  // of inputs
  expectedHasRunningPlugin(classification, flashSetting) {
    switch (classification) {
      case "unknown":
        return flashSetting == classifierTester.ALWAYS_ACTIVATE_PREF_VALUE;
      case "allowed":
        return flashSetting != classifierTester.NEVER_ACTIVATE_PREF_VALUE;
      case "denied":
        return false;
    }
    throw new Error("Invalid classification or flash setting");
  },

  // Returns null if this value should not be verified given the combination
  // of inputs
  expectedPluginListed(classification, flashSetting) {
    if (
      flashSetting == classifierTester.ASK_TO_ACTIVATE_PREF_VALUE &&
      Services.prefs.getCharPref("plugins.navigator.hidden_ctp_plugin") ==
        "Shockwave Flash"
    ) {
      return false;
    }
    switch (classification) {
      case "unknown":
      case "allowed":
        return flashSetting != classifierTester.NEVER_ACTIVATE_PREF_VALUE;
      case "denied":
        return false;
    }
    throw new Error("Invalid classification or flash setting");
  },

  buildTestCaseInNewTab(browser, testCase) {
    return (async function() {
      let iframeDomains = testCase.domains.slice();
      let pageDomain = iframeDomains.shift();
      let tab = await BrowserTestUtils.openNewForegroundTab(
        browser,
        pageDomain + classifierTester.URL_PATH
      );

      let depth = 0;
      for (let domain of iframeDomains) {
        // Firefox does not like to load the same page in its own iframe. Put some
        // bogus query strings in the URL to make it happy.
        let url =
          domain +
          classifierTester.URL_PATH +
          "?date=" +
          Date.now() +
          "rand=" +
          Math.random();
        let domainLoaded = BrowserTestUtils.browserLoaded(
          tab.linkedBrowser,
          true,
          url
        );

        await SpecialPowers.spawn(
          tab.linkedBrowser,
          [classifierTester.IFRAME_ID, url, depth],
          (iframeId, url, depth) => {
            let doc = content.document;
            for (let i = 0; i < depth; ++i) {
              doc = doc.getElementById(iframeId).contentDocument;
            }
            doc.getElementById(iframeId).src = url;
          }
        );

        await domainLoaded;
        ++depth;
      }
      return tab;
    })();
  },

  async getPluginInfo(browser, depth) {
    async function fn(frame, iframeId, depth) {
      return SpecialPowers.spawn(
        frame,
        [iframeId, depth, fn.toString()],
        async (iframeId, depth, fnSource) => {
          // eslint-disable-next-line no-eval
          let fnGetIframePluginInfo = eval(`(() => (${fnSource}))()`);

          let doc = content.document;
          let win = content.window;
          let frame = doc.getElementById(iframeId);
          if (!frame) {
            throw new Error("Unable to find iframe!");
          }
          if (depth != 0) {
            return fnGetIframePluginInfo(
              frame.contentWindow,
              iframeId,
              --depth
            );
          }

          let pluginObj = doc.getElementById("testObject");
          if (!(pluginObj instanceof Ci.nsIObjectLoadingContent)) {
            throw new Error("Unable to find plugin!");
          }

          return {
            pluginFallbackType: pluginObj.pluginFallbackType,
            activated: pluginObj.activated,
            hasRunningPlugin: pluginObj.hasRunningPlugin,
            listed: "Shockwave Flash" in win.navigator.plugins,
            flashClassification: doc.documentFlashClassification,
          };
        }
      );
    }

    return fn(browser, classifierTester.IFRAME_ID, depth);
  },

  checkPluginInfo(pluginInfo, expectedClassification, flashSetting) {
    // Flashblocking is disabled when fission is enabled, so all the classifications
    // should be "unknown"
    if (Services.prefs.getBoolPref(classifierTester.FISSION_PREF)) {
      expectedClassification = "unknown";
    }

    // We've stopped allowing flash to be always activated, so check
    // existing tests that attempt to do so get treated as using ask-to-activate.
    if (flashSetting == classifierTester.ALWAYS_ACTIVATE_PREF_VALUE) {
      flashSetting = classifierTester.ASK_TO_ACTIVATE_PREF_VALUE;
    }
    is(
      pluginInfo.flashClassification,
      expectedClassification,
      "Page's classification should match expected"
    );

    let expectedPluginFallbackType = classifierTester.expectedPluginFallbackType(
      pluginInfo.flashClassification,
      flashSetting
    );
    if (expectedPluginFallbackType != null) {
      is(
        pluginInfo.pluginFallbackType,
        expectedPluginFallbackType,
        "Plugin should have the correct fallback type"
      );
    }

    let expectedActivated = classifierTester.expectedActivated(
      pluginInfo.flashClassification,
      flashSetting
    );
    if (expectedActivated != null) {
      is(
        pluginInfo.activated,
        expectedActivated,
        "Plugin should have the correct activation"
      );
    }

    let expectedHasRunningPlugin = classifierTester.expectedHasRunningPlugin(
      pluginInfo.flashClassification,
      flashSetting
    );
    if (expectedHasRunningPlugin != null) {
      is(
        pluginInfo.hasRunningPlugin,
        expectedHasRunningPlugin,
        "Plugin should have the correct 'plugin running' state"
      );
    }

    let expectedPluginListed = classifierTester.expectedPluginListed(
      pluginInfo.flashClassification,
      flashSetting
    );
    if (expectedPluginListed != null) {
      is(
        pluginInfo.listed,
        expectedPluginListed,
        "Plugin's existance in navigator.plugins should match expected"
      );
    }
  },
};
registerCleanupFunction(classifierTester.unsetPrefs);