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/* Any copyright is dedicated to the Public Domain.
"use strict";
const uuidGenerator = Services.uuid;
/*
* Utility functions for the browser content sandbox tests.
*/
function sanityChecks() {
// This test is only relevant in e10s
if (!gMultiProcessBrowser) {
ok(false, "e10s is enabled");
info("e10s is not enabled, exiting");
return;
}
let level = 0;
let prefExists = true;
// Read the security.sandbox.content.level pref.
// eslint-disable-next-line mozilla/use-default-preference-values
try {
level = Services.prefs.getIntPref("security.sandbox.content.level");
} catch (e) {
prefExists = false;
}
ok(prefExists, "pref security.sandbox.content.level exists");
if (!prefExists) {
return;
}
info(`security.sandbox.content.level=${level}`);
Assert.greater(level, 0, "content sandbox is enabled.");
let isFileIOSandboxed = isContentFileIOSandboxed(level);
// Content sandbox enabled, but level doesn't include file I/O sandboxing.
ok(isFileIOSandboxed, "content file I/O sandboxing is enabled.");
if (!isFileIOSandboxed) {
info("content sandbox level too low for file I/O tests, exiting\n");
}
}
// Creates file at |path| and returns a promise that resolves with an object
// with .ok boolean to indicate true if the file was successfully created,
// otherwise false. Include imports so this can be safely serialized and run
// remotely by ContentTask.spawn.
function createFile(path) {
const { FileUtils } = ChromeUtils.importESModule(
);
try {
const fstream = Cc[
"@mozilla.org/network/file-output-stream;1"
].createInstance(Ci.nsIFileOutputStream);
fstream.init(
new FileUtils.File(path),
-1, // readonly mode
-1, // default permissions
0
); // behaviour flags
const ostream = Cc["@mozilla.org/binaryoutputstream;1"].createInstance(
Ci.nsIBinaryOutputStream
);
ostream.setOutputStream(fstream);
const data = "TEST FILE DUMMY DATA";
ostream.writeBytes(data, data.length);
ostream.close();
fstream.close();
} catch (e) {
return { ok: false };
}
return { ok: true };
}
// Creates a symlink at |path| and returns a promise that resolves with an
// object with .ok boolean to indicate true if the symlink was successfully
// created, otherwise false. Include imports so this can be safely serialized
// and run remotely by ContentTask.spawn.
function createSymlink(path) {
const { ctypes } = ChromeUtils.importESModule(
);
try {
const libc = ctypes.open(
Services.appinfo.OS === "Darwin" ? "libSystem.B.dylib" : "libc.so"
);
const symlink = libc.declare(
"symlink",
ctypes.default_abi,
ctypes.int, // return value
ctypes.char.ptr, // target
ctypes.char.ptr //linkpath
);
if (symlink("/etc", path)) {
return { ok: false };
}
} catch (e) {
return { ok: false };
}
return { ok: true };
}
// Deletes file at |path| and returns a promise that resolves with an object
// with .ok boolean to indicate true if the file was successfully deleted,
// otherwise false. Include imports so this can be safely serialized and run
// remotely by ContentTask.spawn.
function deleteFile(path) {
const { FileUtils } = ChromeUtils.importESModule(
);
try {
const file = new FileUtils.File(path);
file.remove(false);
} catch (e) {
return { ok: false };
}
return { ok: true };
}
// Reads the directory at |path| and returns a promise that resolves when
// iteration over the directory finishes or encounters an error. The promise
// resolves with an object where .ok indicates success or failure and
// .numEntries is the number of directory entries found.
function readDir(path) {
const { FileUtils } = ChromeUtils.importESModule(
);
let numEntries = 0;
try {
const file = new FileUtils.File(path);
const enumerator = file.directoryEntries;
while (enumerator.hasMoreElements()) {
void enumerator.nextFile;
numEntries++;
}
} catch (e) {
return { ok: false, numEntries };
}
return { ok: true, numEntries };
}
// Reads the file at |path| and returns a promise that resolves when
// reading is completed. Returned object has boolean .ok to indicate
// success or failure.
function readFile(path) {
const { FileUtils } = ChromeUtils.importESModule(
);
try {
const file = new FileUtils.File(path);
const fstream = Cc[
"@mozilla.org/network/file-input-stream;1"
].createInstance(Ci.nsIFileInputStream);
fstream.init(file, -1, -1, 0);
const istream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(
Ci.nsIBinaryInputStream
);
istream.setInputStream(fstream);
const available = istream.available();
void istream.readBytes(available);
} catch (e) {
return { ok: false };
}
return { ok: true };
}
// Does a stat of |path| and returns a promise that resolves if the
// stat is successful. Returned object has boolean .ok to indicate
// success or failure.
function statPath(path) {
const { FileUtils } = ChromeUtils.importESModule(
);
try {
const file = new FileUtils.File(path);
void file.lastModifiedTime;
} catch (e) {
return { ok: false };
}
return { ok: true };
}
// Returns true if the current content sandbox level, passed in
// the |level| argument, supports filesystem sandboxing.
function isContentFileIOSandboxed(level) {
let fileIOSandboxMinLevel = 0;
// Set fileIOSandboxMinLevel to the lowest level that has
// content filesystem sandboxing enabled. For now, this
// varies across Windows, Mac, Linux, other.
switch (Services.appinfo.OS) {
case "WINNT":
fileIOSandboxMinLevel = 1;
break;
case "Darwin":
fileIOSandboxMinLevel = 1;
break;
case "Linux":
fileIOSandboxMinLevel = 2;
break;
default:
Assert.ok(false, "Unknown OS");
}
return level >= fileIOSandboxMinLevel;
}
// Returns the lowest sandbox level where blanket reading of the profile
// directory from the content process should be blocked by the sandbox.
function minProfileReadSandboxLevel() {
switch (Services.appinfo.OS) {
case "WINNT":
return 3;
case "Darwin":
return 2;
case "Linux":
return 3;
default:
Assert.ok(false, "Unknown OS");
return 0;
}
}
// Returns the lowest sandbox level where blanket reading of the home
// directory from the content process should be blocked by the sandbox.
function minHomeReadSandboxLevel() {
switch (Services.appinfo.OS) {
case "WINNT":
return 3;
case "Darwin":
return 3;
case "Linux":
return 3;
default:
Assert.ok(false, "Unknown OS");
return 0;
}
}
function isMac() {
return Services.appinfo.OS == "Darwin";
}
function isWin() {
return Services.appinfo.OS == "WINNT";
}
function isLinux() {
return Services.appinfo.OS == "Linux";
}
function isNightly() {
let version = SpecialPowers.Services.appinfo.version;
return version.endsWith("a1");
}
function uuid() {
return uuidGenerator.generateUUID().toString();
}
// Returns a file object for a new file in the home dir ($HOME/<UUID>).
function fileInHomeDir() {
// get home directory, make sure it exists
let homeDir = Services.dirsvc.get("Home", Ci.nsIFile);
Assert.ok(homeDir.exists(), "Home dir exists");
Assert.ok(homeDir.isDirectory(), "Home dir is a directory");
// build a file object for a new file named $HOME/<UUID>
let homeFile = homeDir.clone();
homeFile.appendRelativePath(uuid());
Assert.ok(!homeFile.exists(), homeFile.path + " does not exist");
return homeFile;
}
// Returns a file object for a new file in the content temp dir (.../<UUID>).
function fileInTempDir() {
let contentTempKey = "TmpD";
// get the content temp dir, make sure it exists
let ctmp = Services.dirsvc.get(contentTempKey, Ci.nsIFile);
Assert.ok(ctmp.exists(), "Temp dir exists");
Assert.ok(ctmp.isDirectory(), "Temp dir is a directory");
// build a file object for a new file in content temp
let tempFile = ctmp.clone();
tempFile.appendRelativePath(uuid());
Assert.ok(!tempFile.exists(), tempFile.path + " does not exist");
return tempFile;
}
function GetProfileDir() {
// get profile directory
let profileDir = Services.dirsvc.get("ProfD", Ci.nsIFile);
return profileDir;
}
function GetHomeDir() {
// get home directory
let homeDir = Services.dirsvc.get("Home", Ci.nsIFile);
return homeDir;
}
function GetHomeSubdir(subdir) {
return GetSubdir(GetHomeDir(), subdir);
}
function GetHomeSubdirFile(subdir) {
return GetSubdirFile(GetHomeSubdir(subdir));
}
function GetSubdir(dir, subdir) {
let newSubdir = dir.clone();
newSubdir.appendRelativePath(subdir);
return newSubdir;
}
function GetSubdirFile(dir) {
let newFile = dir.clone();
newFile.appendRelativePath(uuid());
return newFile;
}
function GetPerUserExtensionDir() {
return Services.dirsvc.get("XREUSysExt", Ci.nsIFile);
}
// Returns a file object for the file or directory named |name| in the
// profile directory.
function GetProfileEntry(name) {
let entry = GetProfileDir();
entry.append(name);
return entry;
}
function GetDir(path) {
let dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
dir.initWithPath(path);
Assert.ok(dir.isDirectory(), `${path} is a directory`);
return dir;
}
function GetDirFromEnvVariable(varName) {
return GetDir(Services.env.get(varName));
}
function GetFile(path) {
let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
file.initWithPath(path);
return file;
}
function GetBrowserType(type) {
let browserType = undefined;
if (!GetBrowserType[type]) {
if (type === "web") {
GetBrowserType[type] = gBrowser.selectedBrowser;
} else {
// open a tab in a `type` content process
gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
preferredRemoteType: type,
});
// get the browser for the `type` process tab
GetBrowserType[type] = gBrowser.getBrowserForTab(gBrowser.selectedTab);
}
}
browserType = GetBrowserType[type];
Assert.strictEqual(
browserType.remoteType,
type,
`GetBrowserType(${type}) returns a ${type} process`
);
return browserType;
}
function GetWebBrowser() {
return GetBrowserType("web");
}
function isFileContentProcessEnabled() {
// Ensure that the file content process is enabled.
let fileContentProcessEnabled = Services.prefs.getBoolPref(
"browser.tabs.remote.separateFileUriProcess"
);
ok(fileContentProcessEnabled, "separate file content process is enabled");
return fileContentProcessEnabled;
}
function GetFileBrowser() {
if (!isFileContentProcessEnabled()) {
return undefined;
}
return GetBrowserType("file");
}
function GetSandboxLevel() {
// Current level
return Services.prefs.getIntPref("security.sandbox.content.level");
}
async function runTestsList(tests) {
let level = GetSandboxLevel();
// remove tests not enabled by the current sandbox level
tests = tests.filter(test => test.minLevel <= level);
for (let test of tests) {
let okString = test.ok ? "allowed" : "blocked";
let processType = test.browser.remoteType;
// ensure the file/dir exists before we ask a content process to stat
// it so we know a failure is not due to a nonexistent file/dir
if (test.func === statPath) {
ok(test.file.exists(), `${test.file.path} exists`);
}
let result = await ContentTask.spawn(
test.browser,
test.file.path,
test.func
);
Assert.equal(
result.ok,
test.ok,
`reading ${test.desc} from a ${processType} process ` +
`is ${okString} (${test.file.path})`
);
// if the directory is not expected to be readable,
// ensure the listing has zero entries
if (test.func === readDir && !test.ok) {
Assert.equal(
result.numEntries,
0,
`directory list is empty (${test.file.path})`
);
}
if (test.cleanup != undefined) {
await test.cleanup(test.file.path);
}
}
}