"use strict";

let ssm = Services.scriptSecurityManager;
// This will show a directory listing, but we never actually load these so that's OK.
const kDummyPage = getRootDirectory(gTestPath);

const kAboutPagesRegistered = Promise.all([
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-chrome-privs",
    kDummyPage,
    Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-chrome-privs2",
    kDummyPage,
    Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-unknown-linkable",
    kDummyPage,
    Ci.nsIAboutModule.MAKE_LINKABLE | Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-unknown-linkable2",
    kDummyPage,
    Ci.nsIAboutModule.MAKE_LINKABLE | Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-unknown-unlinkable",
    kDummyPage,
    Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-unknown-unlinkable2",
    kDummyPage,
    Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-content-unlinkable",
    kDummyPage,
    Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT |
      Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-content-unlinkable2",
    kDummyPage,
    Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT |
      Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-content-linkable",
    kDummyPage,
    Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT |
      Ci.nsIAboutModule.MAKE_LINKABLE |
      Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
  BrowserTestUtils.registerAboutPage(
    registerCleanupFunction,
    "test-content-linkable2",
    kDummyPage,
    Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT |
      Ci.nsIAboutModule.MAKE_LINKABLE |
      Ci.nsIAboutModule.ALLOW_SCRIPT
  ),
]);

const URLs = new Map([
  [
    "http://www.example.com",
    [
      // For each of these entries, the booleans represent whether the parent URI can:
      // - load them
      // - load them without principal inheritance
      // - whether the URI can be created at all (some protocol handlers will
      //   refuse to create certain variants)
      ["http://www.example2.com", true, true, true],
      ["https://www.example2.com", true, true, true],
      ["moz-icon:file:///foo/bar/baz.exe", false, false, true],
      ["moz-icon://.exe", false, false, true],
      ["chrome://foo/content/bar.xul", false, false, true],
      ["view-source:http://www.example2.com", false, false, true],
      ["view-source:https://www.example2.com", false, false, true],
      ["data:text/html,Hi", true, false, true],
      ["view-source:data:text/html,Hi", false, false, true],
      ["javascript:alert('hi')", true, false, true],
      ["moz://a", false, false, true],
      ["about:test-chrome-privs", false, false, true],
      ["about:test-unknown-unlinkable", false, false, true],
      ["about:test-content-unlinkable", false, false, true],
      ["about:test-content-linkable", true, true, true],
      // Because this page doesn't have SAFE_FOR_UNTRUSTED, the web can't link to it:
      ["about:test-unknown-linkable", false, false, true],
    ],
  ],
  [
    "view-source:http://www.example.com",
    [
      ["http://www.example2.com", true, true, true],
      ["https://www.example2.com", true, true, true],
      ["moz-icon:file:///foo/bar/baz.exe", false, false, true],
      ["moz-icon://.exe", false, false, true],
      ["chrome://foo/content/bar.xul", false, false, true],
      ["view-source:http://www.example2.com", true, true, true],
      ["view-source:https://www.example2.com", true, true, true],
      ["data:text/html,Hi", true, false, true],
      ["view-source:data:text/html,Hi", true, false, true],
      ["javascript:alert('hi')", true, false, true],
      ["moz://a", false, false, true],
      ["about:test-chrome-privs", false, false, true],
      ["about:test-unknown-unlinkable", false, false, true],
      ["about:test-content-unlinkable", false, false, true],
      ["about:test-content-linkable", true, true, true],
      // Because this page doesn't have SAFE_FOR_UNTRUSTED, the web can't link to it:
      ["about:test-unknown-linkable", false, false, true],
    ],
  ],
  // about: related tests.
  [
    "about:test-chrome-privs",
    [
      ["about:test-chrome-privs", true, true, true],
      ["about:test-chrome-privs2", true, true, true],
      ["about:test-chrome-privs2?foo#bar", true, true, true],
      ["about:test-chrome-privs2?foo", true, true, true],
      ["about:test-chrome-privs2#bar", true, true, true],

      ["about:test-unknown-unlinkable", true, true, true],

      ["about:test-content-unlinkable", true, true, true],
      ["about:test-content-unlinkable?foo", true, true, true],
      ["about:test-content-unlinkable?foo#bar", true, true, true],
      ["about:test-content-unlinkable#bar", true, true, true],

      ["about:test-content-linkable", true, true, true],

      ["about:test-unknown-linkable", true, true, true],
      ["moz-icon:file:///foo/bar/baz.exe", true, true, true],
      ["moz-icon://.exe", true, true, true],
    ],
  ],
  [
    "about:test-unknown-unlinkable",
    [
      ["about:test-chrome-privs", false, false, true],

      // Can link to ourselves:
      ["about:test-unknown-unlinkable", true, true, true],
      // Can't link to unlinkable content if we're not sure it's privileged:
      ["about:test-unknown-unlinkable2", false, false, true],

      ["about:test-content-unlinkable", true, true, true],
      ["about:test-content-unlinkable2", true, true, true],
      ["about:test-content-unlinkable2?foo", true, true, true],
      ["about:test-content-unlinkable2?foo#bar", true, true, true],
      ["about:test-content-unlinkable2#bar", true, true, true],

      ["about:test-content-linkable", true, true, true],

      // Because this page doesn't have SAFE_FOR_UNTRUSTED, the web can't link to it:
      ["about:test-unknown-linkable", false, false, true],
    ],
  ],
  [
    "about:test-content-unlinkable",
    [
      ["about:test-chrome-privs", false, false, true],

      // Can't link to unlinkable content if we're not sure it's privileged:
      ["about:test-unknown-unlinkable", false, false, true],

      ["about:test-content-unlinkable", true, true, true],
      ["about:test-content-unlinkable2", true, true, true],
      ["about:test-content-unlinkable2?foo", true, true, true],
      ["about:test-content-unlinkable2?foo#bar", true, true, true],
      ["about:test-content-unlinkable2#bar", true, true, true],

      ["about:test-content-linkable", true, true, true],
      ["about:test-unknown-linkable", false, false, true],
    ],
  ],
  [
    "about:test-unknown-linkable",
    [
      ["about:test-chrome-privs", false, false, true],

      // Linkable content can't link to unlinkable content.
      ["about:test-unknown-unlinkable", false, false, true],

      ["about:test-content-unlinkable", false, false, true],
      ["about:test-content-unlinkable2", false, false, true],
      ["about:test-content-unlinkable2?foo", false, false, true],
      ["about:test-content-unlinkable2?foo#bar", false, false, true],
      ["about:test-content-unlinkable2#bar", false, false, true],

      // ... but it can link to other linkable content.
      ["about:test-content-linkable", true, true, true],

      // Can link to ourselves:
      ["about:test-unknown-linkable", true, true, true],

      // Because this page doesn't have SAFE_FOR_UNTRUSTED, the web can't link to it:
      ["about:test-unknown-linkable2", false, false, true],
    ],
  ],
  [
    "about:test-content-linkable",
    [
      ["about:test-chrome-privs", false, false, true],

      // Linkable content can't link to unlinkable content.
      ["about:test-unknown-unlinkable", false, false, true],

      ["about:test-content-unlinkable", false, false, true],

      // ... but it can link to itself and other linkable content.
      ["about:test-content-linkable", true, true, true],
      ["about:test-content-linkable2", true, true, true],

      // Because this page doesn't have SAFE_FOR_UNTRUSTED, the web can't link to it:
      ["about:test-unknown-linkable", false, false, true],
    ],
  ],
]);

function testURL(
  source,
  target,
  canLoad,
  canLoadWithoutInherit,
  canCreate,
  flags
) {
  function getPrincipalDesc(principal) {
    if (principal.spec != "") {
      return principal.spec;
    }
    if (principal.isSystemPrincipal) {
      return "system principal";
    }
    if (principal.isNullPrincipal) {
      return "null principal";
    }
    return "unknown principal";
  }
  let threw = false;
  let targetURI;
  try {
    targetURI = Services.io.newURI(target);
  } catch (ex) {
    ok(
      !canCreate,
      "Shouldn't be passing URIs that we can't create. Failed to create: " +
        target
    );
    return;
  }
  ok(
    canCreate,
    "Created a URI for " +
      target +
      " which should " +
      (canCreate ? "" : "not ") +
      "be possible."
  );
  try {
    ssm.checkLoadURIWithPrincipal(source, targetURI, flags);
  } catch (ex) {
    info(ex.message);
    threw = true;
  }
  let inheritDisallowed = flags & ssm.DISALLOW_INHERIT_PRINCIPAL;
  let shouldThrow = inheritDisallowed ? !canLoadWithoutInherit : !canLoad;
  ok(
    threw == shouldThrow,
    "Should " +
      (shouldThrow ? "" : "not ") +
      "throw an error when loading " +
      target +
      " from " +
      getPrincipalDesc(source) +
      (inheritDisallowed ? " without" : " with") +
      " principal inheritance."
  );
}

add_task(async function () {
  // In this test we want to verify both http and https load
  // restrictions, hence we explicitly switch off the https-first
  // upgrading mechanism.
  await SpecialPowers.pushPrefEnv({
    set: [["dom.security.https_first", false]],
  });

  await kAboutPagesRegistered;
  let baseFlags = ssm.STANDARD | ssm.DONT_REPORT_ERRORS;
  for (let [sourceString, targetsAndExpectations] of URLs) {
    let source;
    if (sourceString.startsWith("about:test-chrome-privs")) {
      source = ssm.getSystemPrincipal();
    } else {
      source = ssm.createContentPrincipal(Services.io.newURI(sourceString), {});
    }
    for (let [
      target,
      canLoad,
      canLoadWithoutInherit,
      canCreate,
    ] of targetsAndExpectations) {
      testURL(
        source,
        target,
        canLoad,
        canLoadWithoutInherit,
        canCreate,
        baseFlags
      );
      testURL(
        source,
        target,
        canLoad,
        canLoadWithoutInherit,
        canCreate,
        baseFlags | ssm.DISALLOW_INHERIT_PRINCIPAL
      );
    }
  }

  // Now test blob URIs, which we need to do in-content.
  await BrowserTestUtils.withNewTab(
    "http://www.example.com/",
    async function (browser) {
      await SpecialPowers.spawn(
        browser,
        [testURL.toString()],
        async function (testURLFn) {
          // eslint-disable-next-line no-shadow , no-eval
          let testURL = eval("(" + testURLFn + ")");
          // eslint-disable-next-line no-shadow
          let ssm = Services.scriptSecurityManager;
          // eslint-disable-next-line no-shadow
          let baseFlags = ssm.STANDARD | ssm.DONT_REPORT_ERRORS;
          // eslint-disable-next-line no-unused-vars
          let b = new content.Blob(["I am a blob"]);
          let contentBlobURI = content.URL.createObjectURL(b);
          let contentPrincipal = content.document.nodePrincipal;
          // Loading this blob URI from the content page should work:
          testURL(
            contentPrincipal,
            contentBlobURI,
            true,
            true,
            true,
            baseFlags
          );
          testURL(
            contentPrincipal,
            contentBlobURI,
            true,
            true,
            true,
            baseFlags | ssm.DISALLOW_INHERIT_PRINCIPAL
          );

          testURL(
            contentPrincipal,
            "view-source:" + contentBlobURI,
            false,
            false,
            true,
            baseFlags
          );
          testURL(
            contentPrincipal,
            "view-source:" + contentBlobURI,
            false,
            false,
            true,
            baseFlags | ssm.DISALLOW_INHERIT_PRINCIPAL
          );
        }
      );
    }
  );
});