This makes it possible to test various settings combinations and
examine internal state to confirm correct behavior. Also, the user
doesn't need to start an Etherpad server before running these tests.
There's no need to perform an authentication check in the socket.io
middleware because `PadMessageHandler.handleMessage` calls
`SecurityMananger.checkAccess` and that now performs authentication
and authorization checks.
This change also improves the user experience: Before, access denials
caused socket.io error events in the client, which `pad.js` mostly
ignores (the user doesn't see anything). Now a deny message is sent
back to the client, which causes `pad.js` to display an obvious
permission denied message.
This also fixes a minor bug: `settings.loadTest` is supposed to bypass
authentication and authorization checks, but they weren't bypassed
because `SecurityManager.checkAccess` did not check
`settings.loadTest`.
Previously Etherpad would not pass the correct client IP address through and this caused the rate limiter to limit users behind reverse proxies. This change allows Etherpad to use a client IP passed from a reverse proxy.
Note to devs: This header can be spoofed and spoofing the header could be used in an attack. To mitigate additional *steps should be taken by Etherpad site admins IE doing rate limiting at proxy.* This only really applies to large scale deployments but it's worth noting.
Before this change, the authorize hook was invoked twice: once before
authentication and again after (if settings.requireAuthorization is
true). Now pre-authentication authorization is instead handled by a
new preAuthorize hook, and the authorize hook is only invoked after
the user has authenticated.
Rationale: Without this change it is too easy to write an
authorization plugin that is too permissive. Specifically:
* If the plugin does not check the path for /admin then a non-admin
user might be able to access /admin pages.
* If the plugin assumes that the user has already been authenticated
by the time the authorize function is called then unauthenticated
users might be able to gain access to restricted resources.
This change also avoids calling the plugin's authorize function twice
per access, which makes it easier for plugin authors to write an
authorization plugin that is easy to understand.
This change may break existing authorization plugins: After this
change, the authorize hook will no longer be able to authorize
non-admin access to /admin pages. This is intentional. Access to admin
pages should instead be controlled via the `is_admin` user setting,
which can be set in the config file or by an authentication plugin.
Also:
* Add tests for the authenticate and authorize hooks.
* Disable the authentication failure delay when testing.
Three of the four tests fail if `settings.allowAnyoneToImport` is
false. The fourth ("tries to import Plain Text to a pad that does not
exist") isn't particularly useful when `settings.allowAnyoneToImport`
is false: That test tests an import failure mode, and when
`settings.allowAnyoneToImport` is false the failure could be caused by
that instead of the expected cause.
This makes it possible for reverse proxies to transform 403 errors
into something like "upgrade to a premium account to access this
pad".
Also add some webaccess tests.
* `src/node/server.js` can now be run as a script (for normal
operation) or imported as a module (for tests).
* Move shutdown actions to `src/node/server.js` to be close to the
startup actions.
* Put startup and shutdown in functions so that tests can call them.
* Use `await` instead of callbacks.
* Block until the HTTP server is listening to avoid races during
test startup.
* Add a new `shutdown` hook.
* Use the `shutdown` hook to:
* close the HTTP server
* call `end()` on the stats collection to cancel its timers
* call `terminate()` on the Threads.Pool to stop the workers
* Exit with exit code 0 (instead of 1) on SIGTERM.
* Export the HTTP server so that tests can get the HTTP server's
port via `server.address().port` when `settings.port` is 0.
Before this change, `promises.timesLimit()` created `concurrency - 1`
too many promises. The only users of this function use a concurrency
of 500, so this meant that 499 extra promises were created each time
it was used. The bug didn't affect correctness, but it did result in a
large number of unnecessary database operations whenever a pad was
deleted. This change fixes that bug.
Also:
* Convert the function to async and have it resolve after all of the
created promises are resolved.
* Reject concurrency of 0 (unless total is 0).
* Document the function.
* Add tests.
New feature to copy a pad without copying entire history. This is useful to perform a low CPU intensive operation while still copying current pad state.
Before, a malicious user could bypass authorization restrictions
imposed by the authorize hook:
* Step 1: Fetch any resource that the malicious user is authorized to
access (e.g., static content).
* Step 2: Use the signed express_sid cookie generated in step 1 to
create a socket.io connection.
* Step 3: Perform the CLIENT_READY handshake for the desired pad.
* Step 4: Profit!
Now the authorization decision made by the authorize hook is
propagated to SecurityManager so that it can approve or reject
socket.io messages as appropriate.
This also sets up future support for per-user read-only and
modify-only (no create) authorization levels.
* remote_runner.js: fix drain call (cf.
https://github.com/caolan/async/blob/master/CHANGELOG.md#breaking-changes)
* dont wait 30 seconds after remote_runner.js returned
* timeout frontend tests after 9.5 minutes to prevent travis from silently stop them
* log when not all tests finished
* prevent killTimeout to happen after last test
* log server messages to console
* remote_runner will take some time to setup sl, so this second is not necessary
* dont write to global mocha variable
* mochas `test end` event is not called when a before/beforeEach-hooks
failed, so we should only use pass/fail/pending-hooks for logging.
also some cruft removed
* pass test in `pending`-event handler
* remove some more cruft in tests/frontend/runner.js
* frontend tests: clarify why stats.tests and total differ
* move killTimeout to pass/fail/pending instead of `test end` to guarantee that it is run
* delete killTimeout on test end to prevent misleading log message
* unused variable
* fix regex
* unlikely edge case
* ensure `allowed test duration exceeded` message is printed for the last runner
* get rid of jquery.iframe.js, currently no support for IE<9
* retry up to 3 times when pad could not be loaded
* Call the logging code in stopSauce in a callback for `browser.quit()`.
This should fix cases like
https://app.saucelabs.com/tests/cb8225375d274cbcbb091309f5466cfd
Travis received all the logs and remote_runner.js exits, but there never
is a DELETE command for webdriver.
