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Author SHA1 Message Date
Andre Klapper
aa2b70708e PHPDoc: Replace "@return this" with "@return $this"
Summary:
Per https://github.com/php-fig/fig-standards/blob/master/proposed/phpdoc.md the valid keyword is `$this`.
Thus replace `this` to make output of static code analysis slightly less noisy.

(See rARC4b7ee1985b3c15b4af81b5480522ae24c0afd6a2 for its Arcanist counterpart.)

Test Plan: Read the docs.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25819
2024-09-09 15:48:09 +02:00
Andre Klapper
123831b53f Drop question mark suffix from optional PHPDoc @param types
Summary:
The question mark in `@param type? $foo Desc` is a custom notation not consistently applied across the codebase and not necessarily obvious to the reader (because custom and not mentioned in https://github.com/php-fig/fig-standards/blob/master/proposed/phpdoc.md ).
Instead, explicitly state "optional" in the parameter description for clarity.

Closes T15925.

Test Plan: Run PHPStan, see no `PHPDoc @param has invalid value (type? [...]` style output anymore.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15925

Differential Revision: https://we.phorge.it/D25797
2024-09-06 19:17:00 +02:00
Andre Klapper
b44b566b13 Add missing variable names to PHPDoc @param of methods
Summary:
Add variable names (`$varname` in `@param type $varname explanation`) to PHPDoc method headers, for fun and profit.

Closes T15923

Test Plan:
* Read the method signatures and their corresponding PHPDoc headers at your fireplace
* Still run `./bin/diviner generate` without explosions (though it is very lenient anyway?)

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15923

Differential Revision: https://we.phorge.it/D25794
2024-08-21 15:06:26 +02:00
Andre Klapper
c1a8b83bd7 Correct PHPDoc or add default return for numerous methods
Summary:
Correct PHPDoc when none of the method calls try to handle a return value.
Add missing fallback `return` statements (which may never be reached if previous condition checks were always true).

This reduces the amount of errors reported by static code analysis tools.

Test Plan: Carefully read the code and check all places in which a function gets called whether a return value is expected.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25650
2024-05-18 21:54:51 +02:00
Andre Klapper
7cee42ca26 Replace all phurl.io short URIs with target URIs
Summary:
As of February 2024, phurl.io (which is not run by Phorge.it) shows HTTP 503 errors instead of redirecting to the target URIs.

Thus replace any URIs pointing to phurl.io with the corresponding target URIs, based on the mapping listed on https://secure.phabricator.com/phurl/.

Closes T15746

Test Plan: Carefully read the diff.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15746

Differential Revision: https://we.phorge.it/D25543
2024-02-28 14:59:29 +01:00
Zero King
486fc95b29 Fix reentrancy guard in setDebugTimeLimit()
Summary: $initialized is never initialized and onDebugTick() may be registered multiple times.

Test Plan: None. The function is normally only called once.

Reviewers: O1 Blessed Committers, speck

Reviewed By: O1 Blessed Committers, speck

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25469
2023-11-13 08:51:13 +08:00
Francesco Gazzetta
71b273a622 Update path in startup error
Summary: The error mentioned a "phabricator" directory, but according to the docs it has been migrated to "phorge".

Test Plan: Move the "arcanist" directory somewhere else, run something from phorge/bin/.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25445
2023-10-05 10:36:10 +02:00
Aviv Eyal
9c759fe23a Fix preamble-support
Summary:
Phutil is not yet loaded during preamble, so we can't use it.

This change fixes a regression introduced here, fixing PHP 8.1 support:

{96ae4ba13acbf0e2f8932e950a92af0495f034d7}

Ref T15064

Test Plan: Included test script.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: speck, tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15064

Differential Revision: https://we.phorge.it/D25114
2023-04-10 01:13:52 -07:00
Valerio Bozzolan
96ae4ba13a PHP 8.1: fixes for strlen() not accepting NULL anymore, part 2
Summary:
This is a fix for PHP 8.1 deprecation of strlen(NULL), for these Phorge components:

- scripts
- aphront
- project

The strlen() was used in Phabricator to check if a generic value was a non-empty string.
For this reason, Phorge adopts phutil_nonempty_string() that checks that.

Note: this may highlight other absurd input values that might be worth correcting
instead of just ignoring. If your phutil_nonempty_string() throws an exception, just
report it to Phorge to evaluate and fix together that specific corner case.

Closes T15223
Ref T15190
Ref T15064

Test Plan: - check with your big eyes that there are no obvious typos

Reviewers: O1 Blessed Committers, avivey

Reviewed By: O1 Blessed Committers, avivey

Subscribers: speck, tobiaswiese, Matthew, Cigaryno

Maniphest Tasks: T15223, T15190, T15064

Differential Revision: https://we.phorge.it/D25105
2023-04-01 15:20:13 +02:00
Aviv Eyal
c3f0c0b0f7 Merge Phacility/master into phorge 2022-07-25 11:50:26 -07:00
Dmitri Iouchtchenko
2f1acf8b10 Suppress PHP 8 deprecation warning in startup
Summary: Ref T13588. See D21497. As of PHP 8, the XML entity loader is disabled by default and the `libxml_disable_entity_loader` function is deprecated. Thus suppress the deprecation warning for now; we could skip the function call, but this is safer.

Test Plan:
* Still works with PHP 7.
* No more deprecation message with PHP 8.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T13588

Differential Revision: https://secure.phabricator.com/D21701
2021-07-20 21:07:33 -04:00
Amaury Séchet
2258ba8535 Add package.json for aphlict
Summary: This makes the whole setup easier, future proof and reproducible.

Test Plan:
  cd support/aphlict/server/
  npm install

See that ws gets installed as expected.

Reviewers: O1 Blessed Committers, Matthew

Reviewed By: O1 Blessed Committers, Matthew

Subscribers: Matthew, Ekubischta, speck, tobiaswiese

Maniphest Tasks: T15019

Differential Revision: https://we.phorge.it/D25006
2021-06-21 10:46:27 +00:00
epriestley
42c0c0e3d2 Remove or correct various "phabricator/" references to "libphutil"
Summary:
Ref T13395. "libphutil/" was stripped for parts, but some documentation still references it. This is mostly minor corrections, but:

  - Removes "Javelin at Facebook", long obsolete.
  - Removes "php FPM warmup", which was always a prototype and is obsoleted by PHP preloading in recent PHP.

Test Plan: `grep` / reading

Maniphest Tasks: T13395

Differential Revision: https://secure.phabricator.com/D21624
2021-03-16 10:28:07 -07:00
epriestley
20a54a3006 Apply "pcre.*_limit" ini options in web environments
Summary: Ref T13100. Ref T13586. See D21566, which applied these changes to CLI environments. Also apply them to web environments.

Test Plan: Loaded Phabricator.

Maniphest Tasks: T13586, T13100

Differential Revision: https://secure.phabricator.com/D21567
2021-02-19 11:16:22 -08:00
epriestley
67cf80b377 Test if "get_magic_quotes_gpc()" exists before calling it
Summary:
Ref T13588. This function was deprecated in PHP 7.4 (see D20942) and removed in PHP8.

Test that it exists before calling it so we don't fatal in PHP8.

See <https://discourse.phabricator-community.org/t/daemon-fails-on-php-8-0-2-in-utils-php-array-merge-call-w-fix/4568>.

Test Plan: Used "|| true" to test the message in PHP7. No actual testing in PHP8, but a user reports a similar patch works.

Maniphest Tasks: T13588

Differential Revision: https://secure.phabricator.com/D21549
2021-02-08 09:34:05 -08:00
epriestley
18f049a282 Fix reading of the request path when running the PHP builtin webserver
Summary:
Ref T13575. Since PHP builtin webserver support was added, the pathway for parsing request parameters became more complex. We now rebuild "$_REQUEST" later, and this rebuild will destroy any mutations made to it here, so the assignment to "__path__" is lost.

Instead of "validating" the request path, make this method "read" the request path and store it explicitly, so it will survive any later request mutations.

Test Plan:
  - Submitted any POST form while running Phabricator under the builtin PHP webserver. Old behavior was an error when accessing "__path__"; new behavior is a working application.
  - Loaded normal pages, etc.

Maniphest Tasks: T13575

Differential Revision: https://secure.phabricator.com/D21506
2021-01-11 10:54:40 -08:00
epriestley
5eaa0f24e7 Use "@" to silence "GC list" warnings from "apc_store()" and "apcu_store()"
Summary:
Fixes T13525. Since D21044, the intermittent GC list warnings are treated more severely and can become user-visible errors.

Silence them, since this seems to be the only realistic response in most versions of APC/APCu.

Test Plan: Will deploy.

Maniphest Tasks: T13525

Differential Revision: https://secure.phabricator.com/D21179
2020-04-28 04:13:37 -07:00
epriestley
99cbc20778 Reduce the verbosity of the "Aphlict" log
Summary:
See PHI1692. Currently, the Aphlict log is ridiculously verbose. As an initial pass at improving this:

  - When starting in "debug" mode, pass "--debug=1" to Node.
  - In Node, separate logging into "log" (lower-volume, more-important messages) and "trace" (higher-volume, less-important messages).
  - Only print "trace" messages in "debug" mode.

Test Plan: Ran Aphlict in debug and non-debug modes. Behavior unchanged in debug mode, but log has more sensible verbosity in non-debug mode.

Differential Revision: https://secure.phabricator.com/D21115
2020-04-14 13:24:44 -07:00
epriestley
a2fb91b8af Remove the (hopefully) obsolete "post_max_size" check during startup
Summary:
Ref T13507. See that task for discussion. This check appears to be obsolete in all common cases and misfires if the client submits compressed requests.

Since the cases where it could still trigger correctly are extremely rare and should still have plausible behavior, just remove it.

Test Plan: Grepped for calls.

Maniphest Tasks: T13507

Differential Revision: https://secure.phabricator.com/D21077
2020-04-09 13:33:24 -07:00
epriestley
35a18146a2 Merge a small amount of remaining "libphutil/" code with Phabricator, break libphutil dependency
Summary: Ref T13395. Moves a small amount of remaining "libphutil/" code into "phabricator/" and stops us from loading "libphutil/".

Test Plan: Browsed around; there are likely remaining issues.

Maniphest Tasks: T13395

Differential Revision: https://secure.phabricator.com/D20981
2020-02-12 15:17:36 -08:00
epriestley
138ba87031 Guard call to "get_magic_quotes_gpc()" with "@" to silence PHP 7.4+ warning
Summary:
Fixes T13471. Recent versions of PHP raise a warning when this function is called.

We're only calling it so we can instantly fatal if it's enabled, so use "@" to silence the warning.

Test Plan: Loaded site; see also T13471 for a user reporting that this fix is effective.

Maniphest Tasks: T13471

Differential Revision: https://secure.phabricator.com/D20942
2020-01-14 12:22:59 -08:00
epriestley
adc2002d28 Make it easier to parse "X-Forwarded-For" with one or more load balancers
Summary:
Fixes T13392. If you have 17 load balancers in sequence, Phabricator will receive requests with at least 17 "X-Forwarded-For" components in the header.

We want to select the 17th-from-last element, since prior elements are not trustworthy.

This currently isn't very easy/obvious, and you have to add a kind of sketchy piece of custom code to `preamble.php` to do any "X-Forwarded-For" parsing. Make handling this correctly easier.

Test Plan:
  - Ran unit tests.
  - Configured my local `preamble.php` to call `preamble_trust_x_forwarded_for_header(4)`, then made `/debug/` dump the header and the final value of `REMOTE_ADDR`.

```
$ curl http://local.phacility.com/debug/
<pre>

HTTP_X_FORWARDED_FOR =
   FINAL REMOTE_ADDR = 127.0.0.1
</pre>
```

```
$ curl -H 'X-Forwarded-For: 1.1.1.1, 2.2.2.2, 3.3.3.3, 4.4.4.4, 5.5.5.5, 6.6.6.6' http://local.phacility.com/debug/
<pre>

HTTP_X_FORWARDED_FOR = 1.1.1.1, 2.2.2.2, 3.3.3.3, 4.4.4.4, 5.5.5.5, 6.6.6.6
   FINAL REMOTE_ADDR = 3.3.3.3
</pre>
```

```
$ curl -H 'X-Forwarded-For: 5.5.5.5, 6.6.6.6' http://local.phacility.com/debug/
<pre>

HTTP_X_FORWARDED_FOR = 5.5.5.5, 6.6.6.6
   FINAL REMOTE_ADDR = 5.5.5.5
</pre>
```

Maniphest Tasks: T13392

Differential Revision: https://secure.phabricator.com/D20785
2019-09-05 04:30:13 -07:00
epriestley
3ded5d3e8c Disable the JSHint "function called before it is defined" and "unused parameter" warnings
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
2019-02-19 15:13:56 -08:00
epriestley
b9a1260ef5 Improve top-level fatal exception handling in PHP 7+
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
2019-02-11 15:05:15 -08:00
epriestley
c32fa06266 Use phutil_microseconds_since(...) to simplify some timing arithmetic
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
2018-11-08 16:46:32 -08:00
Alex Vandiver
11f1c13915 Append the intermediate chain to the "cert" parameter in Aphlict
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
2018-06-26 19:34:28 +00:00
epriestley
7e6bae471c Always setlocale() to en_US.UTF-8 for the main process
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
2018-02-05 12:23:06 -08:00
epriestley
819b833607 Tweak rate limiting point counts for omnipotent users
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
2017-10-16 06:43:54 -07:00
epriestley
0e645b8f11 Disconnect rate limits in the PhabricatorStartup shutdown handler
This makes counts more accurate, particularly for connection limits.
2017-10-14 07:14:31 -07:00
epriestley
3f53718d10 Modularize rate/connection limits in Phabricator
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
2017-10-13 13:12:05 -07:00
epriestley
9777c66576 Allow Phabricator to run with "enable_post_data_reading" disabled
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
2017-10-13 13:11:11 -07:00
Chad Little
3b14c1fdd1 Update AphlictClientServer to support ws2 or ws3
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
2017-08-11 15:17:07 -07:00
epriestley
3698e4a14f Update rate limiting for APCu and X-Forwarded-For
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
2017-04-21 20:39:14 -07:00
epriestley
7fd98a5e86 Every so often, ask the Aphict server how things are going
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
2017-04-17 20:33:43 -07:00
epriestley
02194f0fc8 After Aphlict reconnects, ask the server to replay recent messages
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
2017-04-17 15:54:51 -07:00
epriestley
88157a9442 Hold recent messages in Aphlict so they can be replayed after clients reconnect
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
2017-04-17 15:53:58 -07:00
epriestley
842710608e Don't combine automatic output compression with "Content-Length"
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
2016-12-13 14:25:49 -08:00
epriestley
ffdc082852 Add a wide range of HTTP-request-based setup checks
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
2016-12-08 15:46:23 -08:00
epriestley
19c6ccb279 Allow bin/aphlict to start without a valid database connection
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
2016-11-13 16:43:23 -08:00
epriestley
fc950140b4 Blanket reject request which may have been poisoned by a "Proxy" header to mitigate the httpoxy vulnerability
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
2016-07-21 20:18:06 -07:00
epriestley
bbb321395a Support Aphlict clustering
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
2016-04-14 13:26:30 -07:00
epriestley
07fc8f17cc Support "ssl.chain" in Aphlict configuration
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
2016-04-14 10:41:21 -07:00
epriestley
d4bf2a147b Make paths and Aphlict instance names less ambiguous
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
2016-04-14 04:57:21 -07:00
epriestley
2930733ac9 Complete modernization of Aphlict configuration
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
2016-04-14 04:57:00 -07:00
epriestley
c6b0925954 Move Aphlict logging and PID configuration options to config file
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
2016-04-14 04:55:19 -07:00
epriestley
c84dee522b Move server-related Aphlict options to a configuration file
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
2016-04-14 04:54:42 -07:00
epriestley
e32ce529d7 Begin generalizing Aphlict server to prepare for clustering/sensible config file
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
2016-04-14 04:54:20 -07:00
epriestley
2b02024e23 Use AphrontRequestStream to read request input
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
2016-03-17 08:08:18 -07:00
epriestley
42566379dc Fix HTTP body decompression in PHP 5.6
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
2016-02-20 14:55:05 -08:00
epriestley
f5c686d6a4 Swap charts from gRaphael to D3
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
2016-02-01 10:36:59 -08:00