Summary:
Ref T12822. The next change hits these warnings but I think neither is a net positive.
The "function called before it is defined" error alerts on this kind of thing:
```
function a() {
b();
}
function b() {
}
a();
```
Here, `b()` is called before it is defined. This code, as written, is completely safe. Although it's possible that this kind of construct may be unsafe, I think the number of programs where there's unsafe behavior here AND the whole thing doesn't immediately break when you run it at all is very very small.
Complying with this warning is sometimes impossible -- at least without cheating/restructuring/abuse -- for example, if you have two functions which are mutually recursive.
Although compliance is usually possible, it forces you to define all your small utility functions at the top of a behavior. This isn't always the most logical or comprehensible order.
I think we also have some older code which did `var a = function() { ... }` to escape this, which I think is just silly/confusing.
Bascially, this is almost always a false positive and I think it makes the code worse more often than it makes it better.
---
The "unused function parameter" error warns about this:
```
function onevent(e) {
do_something();
```
We aren't using `e`, so this warning is correct. However, when the function is a callback (as here), I think it's generally good hygiene to include the callback parameters in the signature (`onresponse(response)`, `onevent(event)`, etc), even if you aren't using any/all of them. This is a useful hint to future editors that the function is a callback.
Although this //can// catch mistakes, I think this is also a situation where the number of cases where it catches a mistake and even the most cursory execution of the code doesn't catch the mistake is vanishingly small.
Test Plan: Egregiously violated both rules in the next diff. Before change: complaints. After change: no complaints.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T12822
Differential Revision: https://secure.phabricator.com/D20190
Summary:
Depends on D20137. Ref T13250. Ref T12101. In versions of PHP beyond 7, various engine errors are gradually changing from internal fatals or internal errors to `Throwables`, a superclass of `Exception`.
This is generally a good change, but code written against PHP 5.x before `Throwable` was introduced may not catch these errors, even when the code is intended to be a top-level exception handler.
(The double-catch pattern here and elsewhere is because `Throwable` does not exist in older PHP, so `catch (Throwable $ex)` catches nothing. The `Exception $ex` clause catches everything in old PHP, the `Throwable $ex` clause catches everything in newer PHP.)
Generalize some `Exception` into `Throwable`.
Test Plan:
- Added a bogus function call to the rendering stack.
- Before change: got a blank page.
- After change: nice exception page.
{F6205012}
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13250, T12101
Differential Revision: https://secure.phabricator.com/D20138
Summary: Depends on D19796. Simplify some timing code by using phutil_microseconds_since() instead of duplicate casting and arithmetic.
Test Plan: Grepped for `1000000` to find these. Pulled, pushed, made a conduit call. This isn't exhaustive but it should be hard for these to break in a bad way since they're all just diagnostic.
Reviewers: amckinley
Reviewed By: amckinley
Differential Revision: https://secure.phabricator.com/D19797
Summary:
Per the documentation[1], any intermediate chain is to be
appended to the "cert" parameter. The "ca" parameter controls the
root CA used to authenticate the client certificate, if one is
provided, and is not used for intermediate certificate chains -- nor
has it ever been. It is not clear how this could have worked in the
past[2].
[1] https://nodejs.org/api/tls.html#tls_tls_createsecurecontext_options
[2] D15709
Test Plan:
Before this diff, with node 4.2.6 from Ubuntu packages:
```
$ openssl s_client -connect phabricator.dropboxer.net:22280 -verify 5 -CApath /etc/ssl/certs/
verify depth is 5
CONNECTED(00000003)
depth=0 C = US, ST = California, L = San Francisco, O = "Dropbox, Inc", OU = Dropbox Ops, CN = phabricator.dropboxer.net
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 C = US, ST = California, L = San Francisco, O = "Dropbox, Inc", OU = Dropbox Ops, CN = phabricator.dropboxer.net
verify error:num=27:certificate not trusted
verify return:1
depth=0 C = US, ST = California, L = San Francisco, O = "Dropbox, Inc", OU = Dropbox Ops, CN = phabricator.dropboxer.net
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
0 s:/C=US/ST=California/L=San Francisco/O=Dropbox, Inc/OU=Dropbox Ops/CN=phabricator.dropboxer.net
i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 High Assurance Server CA
```
After:
```
$ openssl s_client -connect phabricator.dropboxer.net:22280 -verify 5 -CApath /etc/ssl/certs/
verify depth is 5
CONNECTED(00000003)
depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert High Assurance EV Root CA
verify return:1
depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert SHA2 High Assurance Server CA
verify return:1
depth=0 C = US, ST = California, L = San Francisco, O = "Dropbox, Inc", OU = Dropbox Ops, CN = phabricator.dropboxer.net
verify return:1
---
Certificate chain
0 s:/C=US/ST=California/L=San Francisco/O=Dropbox, Inc/OU=Dropbox Ops/CN=phabricator.dropboxer.net
i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 High Assurance Server CA
1 s:/C=US/ST=California/L=San Francisco/O=Dropbox, Inc/OU=Dropbox Ops/CN=phabricator.dropboxer.net
i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 High Assurance Server CA
2 s:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 High Assurance Server CA
i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert High Assurance EV Root CA
```
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D18181
Summary:
Depends on D18987. See PHI343. Fixes T13060. See also T7339.
When the main process starts up with `LANG=POSIX` (this is the default on Ubuntu) and we later try to run a subprocess with a UTF8 character in the argument list (like `git cat-file blob 🐑.txt`), the argument is not passed to the subprocess correctly.
We already set `LANG=en_US.UTF-8` in the //subprocess// environment, but this only controls behavior for the subprocess itself. It appears that the argument list encoding before the actual subprocess starts depends on the parent process's locale setting, which makes some degree of sense.
Setting `putenv('LANG=en_US.UTF-8')` has no effect on this, but my guess is that the parent process's locale setting is read at startup (rather than read anew from `LANG` every time) and not changed by further modifications of `LANG`.
Using `setlocale(...)` does appear to fix this.
Ideally, installs would probably set some UTF-8-compatible LANG setting as the default. However, this makes setup harder and I couldn't figure out how to do it on our production Ubuntu AMI after spending a reasonable amount of time at it (see T13060).
Since it's very rare that this setting matters, try to just do the right thing. This may fail if "en_US.UTF-8" isn't available, but I think warnings/remedies to this are in the scope of T7339, since we want this locale to exist for other legitimate reasons anyway.
Test Plan:
- Applied this fix in production, processed the failing worker task from PHI343 after kicking Apache hard enough.
- Ran locally with `setlocale(LC_ALL, 'duck.quack')` to make sure a bad/invalid/unavailable setting didn't break anything, didn't hit any issues.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13060
Differential Revision: https://secure.phabricator.com/D18988
Summary:
Ref T13008. We haven't hit any issues with this, but I can imagine we might in the future.
When one host makes an intracluster request to another host, the `$viewer` ends up as the omnipotent viewer. This viewer isn't logged in, so they'll currently accumulate rate limit points at a high rate.
Instead, don't give them any points. These requests are always legitimate, and if they originated from a user request, that request should be the one getting rate limited.
Test Plan: Browsed around.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13008
Differential Revision: https://secure.phabricator.com/D18708
Summary:
Depends on D18702. Ref T13008. This replaces the old hard-coded single rate limit with multiple flexible limits, and defines two types of limits:
- Rate: reject requests if a client has completed too many requests recently.
- Connection: reject requests if a client has too many more connections than disconnections recently.
The connection limit adds +1 to the score for each connection, then adds -1 for each disconnection. So the overall number is how many open connections they have, at least approximately.
Supporting multiple limits will let us do limiting by Hostname and by remote address (e.g., a specific IP can't exceed a low limit, and all requests to a hostname can't exceed a higher limit).
Configuring the new limits looks something like this:
```
PhabricatorStartup::addRateLimit(new PhabricatorClientRateLimit())
->setLimitKey('rate')
->setClientKey($_SERVER['REMOTE_ADDR'])
->setLimit(5);
PhabricatorStartup::addRateLimit(new PhabricatorClientConnectionLimit())
->setLimitKey('conn')
->setClientKey($_SERVER['REMOTE_ADDR'])
->setLimit(2);
```
Test Plan:
- Configured limits as above.
- Made a lot of requests, got cut off by the rate limit.
- Used `curl --limit-rate -F 'data=@the_letter_m.txt' ...` to upload files really slowly. Got cut off by the connection limit. With `enable_post_data_reading` off, this correctly killed the connections //before// the uploads finished.
- I'll send this stuff to `secure` before production to give it more of a chance.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13008
Differential Revision: https://secure.phabricator.com/D18703
Summary:
Ref T13008. Depends on D18701. The overall goal here is to make turning `enable_post_data_reading` off not break things, so we can run rate limiting checks before we read file uploads.
The biggest blocker for this is that turning it off stops `$_FILES` from coming into existence.
This //appears// to mostly work. Specifically:
- Skip the `max_post_size` check when POST is off, since it's meaningless.
- Don't read or scrub $_POST at startup when POST is off.
- When we rebuild REQUEST and POST before processing requests, do multipart parsing if we need to and rebuild FILES.
- Skip the `is_uploaded_file()` check if we built FILES ourselves.
This probably breaks a couple of small things, like maybe `__profile__` and other DarkConsole triggers over POST, and probably some other weird stuff. The parsers may also need more work than they've received so far.
I also need to verify that this actually works (i.e., lets us run code without reading the request body) but I'll include that in the change where I update the actual rate limiting.
Test Plan:
- Disabled `enable_post_data_reading`.
- Uploaded a file with a vanilla upload form (project profile image).
- Uploaded a file with drag and drop.
- Used DarkConsole.
- Submitted comments.
- Created a task.
- Browsed around.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13008
Differential Revision: https://secure.phabricator.com/D18702
Summary: This lets us support either ws2 or ws3. Fixes T12755
Test Plan: Update server to version 3, send message, watch debug log. Downgrade to 2.x, send messages, watch debug log. Everything seems OK
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T12755
Differential Revision: https://secure.phabricator.com/D18411
Summary:
Ref T12612. This updates the rate limiting code to:
- Support a customizable token, like the client's X-Forwarded-For address, rather than always using `REMOTE_ADDR`.
- Support APCu.
- Report a little more rate limiting information.
- Not reference nonexistent documentation (removed in D16403).
I'm planning to put this into production on `secure` for now and then we can deploy it more broadly if things work well.
Test Plan:
- Enabled it locally, used `ab -n 100` to hit the limit, saw the limit enforced.
- Waited a while, was allowed to browse again.
Reviewers: chad, amckinley
Reviewed By: amckinley
Maniphest Tasks: T12612
Differential Revision: https://secure.phabricator.com/D17758
Summary: Ref T12573. This sends a "ping" to the server, and a "pong" back to the client, every 15 seconds. This tricks ELBs into thinking we're doing something useful and productive.
Test Plan: Ran `bin/aphlict debug`, loaded Phabricator, saw ping/pong in logs.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12573
Differential Revision: https://secure.phabricator.com/D17717
Summary:
Fixes T12563. If we've ever seen an "open", mark all future connections as reconnects. When we reconnect, replay recent history.
(Until duplicate messages (T12564) are handled better this may cause some notification duplication.)
Also emit a reconnect event (for T12566) but don't use it yet.
Test Plan: {F4912044}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12563
Differential Revision: https://secure.phabricator.com/D17708
Summary:
Ref T12563. Before broadcasting messages from the server, store them in a history buffer.
A future change will let clients retrieve them.
Test Plan:
- Used the web frontend to look at the buffer, reloaded over time, sent messages. Saw buffer size go up as I sent messages and fall after 60 seconds.
- Set size to 4 messages, sent a bunch of messages, saw the buffer size max out at 4 messages.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12563
Differential Revision: https://secure.phabricator.com/D17707
Summary:
Fixes T12013. Send either "Content-Length" or enable output compression, but not both.
Prefer compression for static resources (CSS, JS, etc).
Test Plan: Ran `curl -v ...`, no longer saw responses with both compression and `Content-Length`.
Reviewers: chad, avivey
Reviewed By: avivey
Subscribers: avivey
Maniphest Tasks: T12013
Differential Revision: https://secure.phabricator.com/D17045
Summary:
Ref T11553. With some regularity, users make various configuration mistakes which we can detect by making a request to ourselves.
I use a magical header to make this request because we want to test everything else (parameters, path).
- Fixes T4854, probably. Tries to detect mod_pagespeed by looking for a header. This is a documentation-based "fix", I didn't actually install mod_pagespeed or formally test this.
- Fixes T6866. We now test for parameters (e.g., user somehow lost "QSA").
- Ref T6709. We now test that stuff is decoded exactly once (e.g., user somehow lost "B").
- Fixes T4921. We now test that Authorization survives the request.
- Fixes T2226. Adds a setup check to determine whether gzip is enabled on the web server, and attempts to enable it at the PHP level.
- Fixes `<space space newline newline space><?php` in `preamble.php`.
Test Plan: Tested all of these setup warnings, although mostly by faking them.
Reviewers: joshuaspence, chad
Reviewed By: chad
Subscribers: Korvin
Maniphest Tasks: T4854, T4921, T6709, T6866, T11553, T2226
Differential Revision: https://secure.phabricator.com/D12622
Summary:
Ref T11818. See that task for a description.
This is like a tiny pinch of hackiness but not really unreasonable. Basically, `aphlict` is already an "uber-server" and one copy can handle a ton of instances.
Test Plan: Started `bin/aphlict` without a valid database connection.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11818
Differential Revision: https://secure.phabricator.com/D16854
Summary:
See accompanying discussion in T11359.
As far as I can tell we aren't vulnerable, but subprocesses could be (now, or in the future). Reject any request which may have a `Proxy:` header.
This will also do a false-positive reject if `HTTP_PROXY` is defined in the environment, but this is likely a misconfiguration (cURL does not read it). I'll provide guidance on this.
Test Plan:
- Made requests using `curl -H Proxy:...`, got rejected.
- Made normal requests, got normal pages.
Reviewers: chad, avivey
Reviewed By: avivey
Differential Revision: https://secure.phabricator.com/D16318
Summary:
Ref T6915. This allows multiple notification servers to talk to each other:
- Every server has a list of every other server, including itself.
- Every server generates a unique fingerprint at startup, like "XjeHuPKPBKHUmXkB".
- Every time a server gets a message, it marks it with its personal fingerprint, then sends it to every other server.
- Servers do not retransmit messages that they've already seen (already marked with their fingerprint).
- Servers learn other servers' fingerprints after they send them a message, and stop sending them messages they've already seen.
This is pretty crude, and the first message to a cluster will transmit N^2 times, but N is going to be like 3 or 4 in even the most extreme cases for a very long time.
The fingerprinting stops cycles, and stops servers from sending themselves copies of messages.
We don't need to do anything more sophisticated than this because it's fine if some notifications get lost when a server dies. Clients will reconnect after a short period of time and life will continue.
Test Plan:
- Wrote two server configs.
- Started two servers.
- Told Phabricator about all four services.
- Loaded Chrome and Safari.
- Saw them connect to different servers.
- Sent messages in one, got notifications in the other (magic!).
- Saw the fingerprinting stuff work on the console, no infinite retransmission of messages, etc.
(This pretty much just worked when I ran it the first time so I probably missed something?)
{F1218835}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T6915
Differential Revision: https://secure.phabricator.com/D15711
Summary: Fixes T10806. Although browsers don't seem to care about this, it's more correct to support it, and the new test console uses normal `cURL` and does care.
Test Plan:
- Hit the error case for providing a chain but no key/cert.
- Used `openssl s_client -connect localhost:22280` to connect to local Aphlict servers.
- With SSL but no chain, saw `openssl` fail to verify the remote.
- With SSL and a chain, saw `openssl` verify the identify of the remote.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10806
Differential Revision: https://secure.phabricator.com/D15709
Summary:
Fixes T10783 (what little of it remains). Ref T10697.
Aphlict currently uses request paths for two different things:
- multi-tenant instancing in the Phacility cluster (each instance gets its own namespace within an Aphlict server);
- some users configure nginx and apache to do proxying or SSL termination based on the path.
Currently, these can collide.
Put a "~" before the instance name to make it unambiguous. At some point we can possibly just use a GET parameter, but I think there was some reason I didn't do that originally and this sequence of changes is disruptive enough already.
Test Plan: Saw local Aphlict unambiguously recognize "local.phacility.com" as instance "local", with a "~"-style URI.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697, T10783
Differential Revision: https://secure.phabricator.com/D15705
Summary:
Fixes T10697. This finishes bringing the rest of the config up to cluster power levels.
Phabricator is now given an arbitrarily long list of notification servers.
Each Aphlict server is given an arbitrarily long list of ports to run services on.
Users are free to make them meet in the middle by proxying whatever they want to whatever else they want.
This should also accommodate clustering fairly easily in the future.
Also rewrote the status UI and changed a million other things. 🐗
Test Plan:
{F1217864}
{F1217865}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15703
Summary: Ref T10697. Mostly straightforward. Also allow the server to have multiple logs and log options in the future (e.g., different verbosities or separate admin/client logs or whatever). No specific plans for this, but the default log is pretty noisy today.
Test Plan: Set up a couple of logs, started server, saw it log to them.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15702
Summary: Ref T10697. This isn't everything but starts generalizing options and moving us toward a cluster-ready state of affairs.
Test Plan: Started server in various configurations, hit most (all?) of the error cases with bad configs, sent test notifications.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15701
Summary:
Ref T10697. Currently, `aphlict` takes a ton of command line flags to configure exactly one admin server and exactly one client server.
I want to replace this with a config file. Additionally, I plan to support:
- arbitrary numbers of listening client ports;
- arbitrary numbers of listening admin ports;
- SSL on any port.
For now, just transform the arguments to look like they're a config file. In the future, I'll load from a config file instead.
This greater generality will allow you to do stuff like run separate HTTP and HTTPS admin ports if you really want. I don't think there's a ton of use for this, but it tends to make the code cleaner anyway and there may be some weird cross-datacneter cases for it. Certainly, we undershot with the initial design and lots of users want to terminate SSL in nginx and run only HTTP on this server.
(Some sort-of-plausible use cases are running separate HTTP and HTTPS client servers, if your Phabricator install supports both, or running multiple HTTPS servers with different certificates if you have a bizarre VPN.)
Test Plan: Started Aphlict, connected to it, sent myself test notifications, viewed status page, reviewed logfile.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15700
Summary:
Ref T10604. This uses the new standalone stream reader introduced in D15483 to read request data, instead of putting the logic in PhabricatorStartup.
It also doesn't read request data until it specifically needs to. This supports, e.g., streaming Git LFS PUT requests, and streaming more types of requests in the future.
Test Plan: See D15483. Made various different types of requests and wasn't immediately able to break anything.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10604
Differential Revision: https://secure.phabricator.com/D15484
Summary:
Ref T10264. Under PHP 5.6, you are no longer allowed to use `compress.zlib://php://input` as an argument to either `fopen()` or `file_get_contents()`.
Instead, open `php://input` as a file handle, then add `zlib.inflate` as a stream wrapper. This requires some level of magic to work properly.
Test Plan:
First, I constructed a synthetic gzipped payload by typing some words into a file and using `gzcompress()` to compress it.
Then I used a `curl` command like this to make requests with it:
```
$ curl -X POST -H "Content-Length: 66" -H "Content-Type: text/plain" -H "Content-Encoding: gzip" --data-binary @payload.deflate -v http://127.0.0.1/
```
I modified Phabricator to just dump the raw request body and exit, and reproduced the issue under PHP 5.6 (no body, error in log) by brining up a micro instance in EC2 and installing php56 on it.
After this patch, it dumped the body properly instead, and PHP 5.5 also continued worked properly.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10264
Differential Revision: https://secure.phabricator.com/D15314
Summary:
Mostly, this has just been sitting in my sandbox for a long time. I may also touch some charting stuff with subprojects/milestones, but don't have particular plans to do that.
D3 seems a bit more flexible, and it's easier to push more of the style logic into CSS so you can fix my design atrocities. gRaphael also hasn't been updated in ~3+ years.
Test Plan:
{F1085433}
{F1085434}
Reviewers: chad
Reviewed By: chad
Subscribers: cburroughs, yelirekim
Differential Revision: https://secure.phabricator.com/D15155
Summary:
Fixes T10228. When we receive a gzipped request (rare, but `git` may send them), decode it before providing it to the application.
This fixes the issue with proxying certain requests described in T10228.
Test Plan:
- Applied this fix in production.
- Cloned a problem repository cleanly.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10228
Differential Revision: https://secure.phabricator.com/D15145
Summary: Ref T8588. It looks like something slow is happening //before// we start DarkConsole. Add some crude reporting to try to narrow it down.
Test Plan: {F743050}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8588
Differential Revision: https://secure.phabricator.com/D13956
Summary: Use `PhutilClassMaQuery` instead of `PhutilSymbolLoader`, mostly for consistency. Depends on D13588.
Test Plan: Poked around a bunch of pages.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D13589
Summary:
Ref T8424. Fixes T7114. This was envisioned as a per-request cache for reusing interpreters, but isn't a good fit for that in modern Phabricator.
In particular, it isn't loaded by the daemons, but they have equal need for per-request caching.
Since I finally need such a cache for Spaces, throw the old stuff away before I built a more modern cache.
Also resolves T7114 by dropping filtering on $_SERVER. I'm pretty sure this is the simplest fix, see D12977 for a bit more discussion.
Test Plan: Called `didFatal()` from somewhere in normal code and verified it was able to use the access log.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7114, T8424
Differential Revision: https://secure.phabricator.com/D13152
Summary: Use `__CLASS__` instead of hard-coding class names. Depends on D12605.
Test Plan: Eyeball it.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: hach-que, Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D12806
Summary:
Caught this in the production error logs. We can end up with `argv` defined and set to an array in an nginx + php-fpm configuration.
When we later run `ExecFuture` subprocesses, they won't be able to forward the value.
The error this produces looks like this:
```
015/04/27 12:17:35 [error] 10948#0: *674 FastCGI sent in stderr: "PHP message: [2015-04-27 12:17:35] ERROR 8: Array to string conversion at [/core/lib/libphutil/src/future/exec/ExecFuture.php:667]
PHP message: arcanist(head=master, ref.master=805ae12408e8), phabricator(head=master, ref.master=8ce8a761efe9), phutil(head=master, ref.master=fccf03d48e08)
PHP message: #0 ExecFuture::isReady() called at [<phutil>/src/future/Future.php:39]
PHP message: #1 Future::resolve(NULL) called at [<phutil>/src/future/exec/ExecFuture.php:413]
PHP message: #2 ExecFuture::resolvex() called at [<phabricator>/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php:40]
PHP message: #3 DiffusionGitRawDiffQuery::executeQuery() called at [<phabricator>/src/applications/diffusion/query/rawdiff/DiffusionRawDiffQuery.php:17]
PHP message: #4 DiffusionRawDiffQuery::loadRawDiff() called at [<phabricator>/src/applications/diffusion/conduit/DiffusionRawDiffQueryConduitAPIMethod.php:56]
PHP message: #5 DiffusionRawDiffQueryConduitAPIMethod::getResult(ConduitAPIRequest) called at [<phabricator>/src/applications/diffusion/conduit/DiffusionQueryConduitAPIMethod.php:135]
PHP message: #6 DiffusionQueryConduitAPIMethod::execute(ConduitAPIRequest) called at [<phabricator>/src/applications/conduit/method/ConduitAPIMethod.php:90]
PHP message: #7 ConduitAPIMethod::executeMethod(ConduitAPIRequest) called at [<phabricator>/src/applications/conduit/call/ConduitCall.php:134]
PHP message: #8 ConduitCall::executeMethod() called at [<phabricator>/src/applications/conduit/call/ConduitCall.php:84]
PHP message: #9 ConduitCall::execute() called at [<phabricator>/src/applications/diffusion/query/DiffusionQuery.php:81]
PHP message: #10 DiffusionQuery::callConduitWithDiffusionRequest(PhabricatorUser, DiffusionGitRequest, string, array) called at [<phabricator>/src/applications/diffusion/controller/DiffusionController.php:184]
PHP message: #11 DiffusionController::callConduitWithDiffusionRequest(string, array) called at [<phabricat
```
Test Plan: I'm just going to push this to make sure it fixes things, since I can't repro it locally.
Reviewers: btrahan
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D12571
Summary:
Fixes T7130. Fixes T7041. Fixes T7012.
Major change here is partitioning clients. In the Phacility cluster, being able to get a huge pile of instances on a single server -- without needing to run a process per instance -- is desirable.
To accomplish this, just bucket clients by the path they connect with. This will let us set client URIs to `/instancename/` and then route connections to a small set of servers. This degrades cleanly in the common case and has no effect on installs which don't do instancing.
Also fix two unrelated issues:
- Fix the timeouts, which were incorrectly initializing in `open()` (which is called during reconnect, causing them to reset every time). Instead, initialize in the constructor. Cap timeout at 5 minutes.
- Probably fix subscriptions, which were using a property with an object definition. Since this is by-ref, all concrete instances of the object share the same property, so all users would be subscribed to everything. Probably.
Test Plan:
- Hit notification status page, saw version bump and instance/path name.
- Saw instance/path name in client and server logs.
- Stopped server, saw reconnects after 2, 4, 16, ... seconds.
- Sent test notification; received test notification.
- Didn't explicitly test the subscription thing but it should be obvious by looking at `/notification/status/` shortly after a push.
Reviewers: joshuaspence, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7041, T7012, T7130
Differential Revision: https://secure.phabricator.com/D11769
Summary: Ref T7124. The local version of `this` in the handler of 'end' was incremented rather than the global one.
Test Plan: Sending test notifications did not increment the `messages.in` value before this patch even if it should have. With the patch sending test notifications does increment `messages.in`.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7124
Differential Revision: https://secure.phabricator.com/D11648
Summary: Ref T7126. Dictionaries do not have a `length` property unlike arrays resulting in the `getActiveListenerCount()` function returning undefined results. Using the `length` property on the array of keys will work.
Test Plan: Using `wscat` to generate multiple connections to the server, establish new ones and close others while keeping an eye on the displayed `clients.active` value.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T7126
Differential Revision: https://secure.phabricator.com/D11647
Summary: Ref T7110. Listeners are now removed when clients close the connection to avoid stacking a never ending number of unused listeners.
Test Plan: Using `wscat` to connect to the Aphlict server; when closing the connection a 'Diconnected.' will appear in the logs and the number of active listeners is decreased by one.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T7110
Differential Revision: https://secure.phabricator.com/D11634
Summary: Add the logger as soon as possible so that the log file will contain errors if the `ws` module cannot be loaded.
Test Plan: Ran `./bin/aphlict debug` without having the `ws` module installed. Saw errors in the logs.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11457
Summary:
This option prohibits overwriting prototypes of native objects such as `Array`, `Date` and so on.
```lang=js
// jshint freeze:true
Array.prototype.count = function (value) { return 4; };
// -> Warning: Extending prototype of native object: 'Array'.
```
Test Plan: Linted existing JavaScript files, found no violations.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11439
Summary:
In particular, this changes the behavior of NodeJS in the following ways:
- Any attempt to get or modify the global object will result in an error.
- `null` values of `this` will no longer be evaluated to the global object and primitive values of this will not be converted to wrapper objects.
- Writing or deleting properties which have there writeable or configurable attributes set to false will now throw an error instead of failing silently.
- Adding a property to an object whose extensible attribute is false will also throw an error now.
- A functions arguments are not writeable so attempting to change them will now throw an error `arguments = [...]`.
- `with(){}` statements are gone.
- Use of `eval` is effectively banned.
- `eval` and `arguments` are not allowed as variable or function identifiers in any scope.
- The identifiers `implements`, `interface`, `let`, `package`, `private`, `protected`, `public`, `static` and `yield` are all now reserved for future use (roll on ES6).
Test Plan: Verified that Aphlict was still functional.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11430
Summary:
This was broken in D11383. Basically, I had the `ws` module installed globally whilst testing, but the changes made do not work if the `ws` module is installed locally (i.e. in the `./support/aphlict/server/node_modules` directory). After poking around, it seems that this is due to the sandboxing that is done by `JX.require`.
A quick fix is to just //not// use `JX.require`, although you may have a better idea?
The error that is occurring is as follows:
```
<<< UNCAUGHT EXCEPTION! >>>
Error: Cannot find module 'ws'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at extra.require (/usr/src/phabricator/webroot/rsrc/externals/javelin/core/init_node.js:48:16)
at /usr/src/phabricator/support/aphlict/server/lib/AphlictClientServer.js:10:17
at Script.(anonymous function) [as runInNewContext] (vm.js:41:22)
at Object.JX.require (/usr/src/phabricator/webroot/rsrc/externals/javelin/core/init_node.js:58:6)
at Object.<anonymous> (/usr/src/phabricator/support/aphlict/server/aphlict_server.js:102:4)
at Module._compile (module.js:456:26)
>>> Server exited!
```
Test Plan: Now able to start the Aphlict server.
Reviewers: joshuaspence
Reviewed By: joshuaspence
Subscribers: Korvin, epriestley
Maniphest Tasks: T6987
Differential Revision: https://secure.phabricator.com/D11425
Summary: By calling `process.exit(1)` we are forcing the Node.js process to exit prematurely. Specifically, the process is terminated before the error is written to the log file. This can be verified by inspecting the value of `debug._logs[0]._writableState.writing` immediately before the process is terminated.
Test Plan: Ran `./bin/aphlict debug` without the `ws` module being installed. Verified that `<<< UNCAUGHT EXCEPTION! >>>` was echoed to the console as well as the log file. Also verified that the exit status was non-zero.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11426
Summary: Tidy the Aphlict server by splitting the functionality into two main modules, `AphlictClientServer` and `AphlictAdminServer. There is still further tidying that could be done here, but I feel that this puts us in a much better place.
Test Plan: Sent notifications via `/notification/status/`.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11383
Summary: Currently, the Aphlict server created the log file (if it doesn't exist) but then immediately fails with "Unable to open logfile". It seems that we don't set the permissions correctly.
Test Plan: Deleted log file and was able to start the Aphlict server.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11351
Summary:
Yeahhhhhhhh....
- Open a "stream", not a "steam".
- Make error easier for users to understand.
- Write to the log in debug mode so the issue is more apparent.
Test Plan:
- Started server with bad permissions, got usable error message.
- Started server with good permissions, got logfile.
Reviewers: joshuaspence, btrahan
Reviewed By: btrahan
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11339
Summary: If you are running the Aphlict server behind a reverse proxy (such as `nginx`) then there's no need to bind to `0.0.0.0`. Add a `--client-host` flag to `aphlict_server.js` to allow binding to a different hostname. Also changed the other flags for consistency and clarity.
Test Plan: Started, stopped and debug the Aphlict server.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11288
