Summary:
Fixes T5752. This obsoletes a bunch of old patterns and I'll follow up on those with a big "go do a bunch of mechanical code changes" task. Major goals are:
- Don't load named queries multiple times on search pages.
- Don't require extra code to get standard navigation right on mobile.
- Reduce the amount of boilerplate in ListControllers.
- Reduce the amount of boilerplate around navigation/menus in all controllers.
Specifically, here's what this does:
- The StandardPage is now a smarter/more structured object with `setNavigation()` and `setCrumbs()` methods. More rendering decisions are delayed until the last possible moment.
- It uses this to automatically add crumb actions to the application menu.
- It uses this to automatically reuse one SearchEngine instead of running queries multiple times.
- The new preferred way to build responses is `$this->newPage()` (like `$this->newDialog()`), which has structured methods for adding stuff (`setTitle()`, etc).
- SearchEngine exposes a new convenience method so you don't have to do all the controller delegation stuff.
- Building menus is generally simpler.
Test Plan:
- Tested paste list, view, edit, comment, raw controllers for functionality, mobile menu, crumbs, navigation menu.
- Edited saved queries.
- Tested Differential, Maniphest (no changes).
- Verified the paste pages don't run any duplicate NamedQuery queries.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T5752
Differential Revision: https://secure.phabricator.com/D14382
Summary:
This implements `PHUIDocumentViewPro` which should move to be the base for all documents (Phame, Phriction, Legalpad, Diviner). Overall this feels really good to me, but I'd like to roll it out into Diviner specifically first to work through the issues and then move into other apps and drop `PHUIDocumentView` once everything is converted. Some features are:
- White Background, no border on page
- Table of Contents is move to hidden menu (more space for documentation)
- Property List sits under the document
Some design decisions above are in anticipation of Phriction v3 and Unbeta Phame, specifically commenting and maybe some cool new Remarkup text layout options for Phame.
Test Plan:
Went through tons of pages on Diviner on Desktop, Tablet, Mobile. Bounce back to Phriction to make sure DocumentView CSS changes actually look better there.
{F930518}
{F930519}
{F930520}
{F930521}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: tycho.tatitscheff, joshuaspence, Korvin
Differential Revision: https://secure.phabricator.com/D14374
Summary:
Ref T1806. Ref T5752. Currently, `handleRequest()` needs to return an `AphrontResponse`, but sometimes it's really convenient to return some other object, like a Dialog, and let that convert into a response elsewhere.
Formalize this and clean up some of the existing hacks for it so there's less custom/magical code in Phabricator-specific classes and more general code in Aphront classes.
More broadly, I want to clean up T5752 before pursuing T9132, since I'm generally happy with how `SearchEngine` works except for how it interacts with side navs / application menus. I want to fix that first so a new Editor (which will have a lot in common with SearchEngine in terms of how controllers interact with it) doesn't make the problem twice as bad.
Test Plan:
- Loaded a bunch of normal pages.
- Loaded dialogs.
- Loaded proxy responses (submitted empty comments in Maniphest).
Reviewers: chad
Reviewed By: chad
Subscribers: joshuaspence
Maniphest Tasks: T1806, T5752
Differential Revision: https://secure.phabricator.com/D14032
Summary:
Ref T8449. If a user doesn't have access to any spaces, most applications just don't work, and they fail in confusing ways.
Just lock users out of everything explicitly up front with a clear message instead of letting them stumble into a big broken mess.
Test Plan: Locked a user out of all spaces, saw error to that effect.
Reviewers: btrahan, eadler
Reviewed By: eadler
Subscribers: eadler, epriestley
Maniphest Tasks: T8449
Differential Revision: https://secure.phabricator.com/D13545
Summary: Ref T6367.
Test Plan:
- Added and executed unit tests.
- Sent mail to A (en_US) and B (en_A*).
- Got one mail in English and one mail in ENGLISH.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T6367
Differential Revision: https://secure.phabricator.com/D13142
Summary: Fixes T7913. Collapse the separate board dropdown into the board projects behavior; we always need that anyway and now we can install the listener more granularly.
Test Plan:
- visted project board
- invoked create task, cancelled dialog
- visited project feed
- visited project board
- invoked create task, cancelled dialog (FAILED pre patch...!)
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7913
Differential Revision: https://secure.phabricator.com/D12599
Summary: Fixes T7685. This required making the global drag and drop behavior able to "uninstall" itself so to speak, and then it re-installs it self as necessary.
Test Plan:
Did the following all successfully
- uploaded a file to homepage
- homepage -> differential -- no way to upload via drag and drop
- homepage -> differential -> homepage -- uploaded a file
- homepage -> differential -> browser back button to homepage -- uploaded a file
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7685
Differential Revision: https://secure.phabricator.com/D12534
Summary: Ref T7803. Remove these in favor of more generalized paging and ordering.
Test Plan: Sorted and paged results in various applications.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7803
Differential Revision: https://secure.phabricator.com/D12378
Summary: Fixes T7689. I'm not going to go clean up all the rest of the `loadViewerHandles()` calls right now since a lot of them are kind of a pain and they aren't really hurting anything so it doesn't feel very leveraged, but at least deprecate it and document the new hotness.
Test Plan:
have a look
in a book
reading rainbow
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7689
Differential Revision: https://secure.phabricator.com/D12343
Summary: These arrays looks a little odd, most likely due to the autofix applied by `ArcanistXHPASTLinter::LINT_ARRAY_SEPARATOR`. See D12296 in which I attempt to improve the autocorrection from this linter rule.
Test Plan: N/A
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D12281
Summary: Ref T7061. Quicksand still needs an ajax-style response here.
Test Plan: Clicked a file detail page (this redirects) with column open, ended up in the right place.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7061
Differential Revision: https://secure.phabricator.com/D12206
Summary: Fixes T7159.
Test Plan:
Created a legalpad document that needed a signature and I was required to sign it no matter what page I hit. Signed it and things worked! Added a new legalpad document and I had to sign again!
Ran unit tests and they passed!
Logged out as a user who was roadblocked into signing a bunch of stuff and it worked!
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7159
Differential Revision: https://secure.phabricator.com/D11759
Summary:
Ref T7152. Ref T1139. This updates Phabricator so third-party libraries can translate their own stuff. Also:
- Hide "All Caps" when not in development mode, since some users have found this a little confusing.
- With other changes, adds a "Raw Strings" mode (development mode only).
- Add an example silly translation to make sure the serious business flag works.
- Add a basic British English translation.
- Simplify handling of translation overrides.
Test Plan:
- Flipped serious business / development on and off and saw silly/development translations drop off.
- Switched to "All Caps" and saw all caps.
- Switched to Very English, Wow!
- Switched to British english and saw "colour".
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7152, T1139
Differential Revision: https://secure.phabricator.com/D11747
Summary:
Ref T2086. Ref T7014. With the persistent column, there is significant value in retaining chrome state through navigation events, because the user may have a lot of state in the chat window (scroll position, text selection, room juggling, partially entered text, etc). We can do this by capturing navigation events and faking them with Javascript.
(This can also improve performance, albeit slightly, and I believe there are better approaches to tackle performance any problems which exist with the chrome in many cases).
At Facebook, this system was "Photostream" in photos and then "Quickling" in general, and the technical cost of the system was //staggering//. I am loathe to pursue it again. However:
- Browsers are less junky now, and we target a smaller set of browsers. A large part of the technical cost of Quickling was the high complexity of emulating nagivation events in IE, where we needed to navigate a hidden iframe to make history entries. All desktop browsers which we might want to use this system on support the History API (although this prototype does not yet implement it).
- Javelin and Phabricator's architecture are much cleaner than Facebook's was. A large part of the technical cost of Quickling was inconsistency, inlined `onclick` handlers, and general lack of coordination and abstraction. We will have //some// of this, but "correctly written" behaviors are mostly immune to it by design, and many of Javelin's architectural decisions were influenced by desire to avoid issues we encountered building this stuff for Facebook.
- Some of the primitives which Quickling required (like loading resources over Ajax) have existed in a stable state in our codebase for a year or more, and adoption of these primitives was trivial and uneventful (vs a huge production at Facebook).
- My hubris is bolstered by recent success with WebSockets and JX.Scrollbar, both of which I would have assessed as infeasibly complex to develop in this project a few years ago.
To these points, the developer cost to prototype Photostream was several weeks; the developer cost to prototype this was a bit less than an hour. It is plausible to me that implementing and maintaining this system really will be hundreds of times less complex than it was at Facebook.
Test Plan:
My plan for this and D11497 is:
- Get them in master.
- Some secret key / relatively-hidden preference activates the column.
- Quicksand activates //only// when the column is open.
- We can use column + quicksand for a long period of time (i.e., over the course of Conpherence v2 development) and hammer out the long tail of issues.
- When it derps up, you just hide the column and you're good to go.
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: epriestley
Maniphest Tasks: T2086, T7014
Differential Revision: https://secure.phabricator.com/D11507
Summary: Ref T6822. This method needs to be `public` because it is called from `PhabricatorApplicationSearchController::buildApplicationMenu()`.
Test Plan: I wouldn't expect //increasing// method visibility to break anything.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T6822
Differential Revision: https://secure.phabricator.com/D11416
Summary: Fixes T6731. I don't really understand the intent behind the two view classes here, but to get this to work I need to pass yet more data to the lower-level class.
Test Plan: Viewed a task with many comments. Clicked "show older". Quoted everything I could. Verified for each quote that it quoted correctly, inlcuding linking to the prior transaction.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T6731
Differential Revision: https://secure.phabricator.com/D10973
Summary: Fixes T6693.
Test Plan:
Made a bunch of comments on a diff with differential, being sure to leave inlines here and there. This reproduced the issue in T6693. With this patch this issue no longer reproduces!
Successfully "showed older changes" in Maniphest too.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T6693
Differential Revision: https://secure.phabricator.com/D10931
Summary: Ref T4712. This adds pagination. Future diffs will need to deploy `buildTransactionTimeline` everywhere and massage this stuff as necessary if we hit any special cases.
Test Plan: Set page size to "5" to make it need to paginate often. Verified proper transactions loaded in and the javascript actions worked.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T4712
Differential Revision: https://secure.phabricator.com/D10887
Summary:
Ref T6238. I'm building the instance management application now, but not putting it in the upstream -- I think the only use case for it is to build SAAS. If someone comes up with a use case (maybe a college course that wants to create an instance per-class or something?) we could open it up eventually, but it seems cleaner to keep it out of the upstream until we have such a use case.
I need to add schema patches. Make it easier for a subclass to just "add all the patches in this directory", like "autopatches/" works.
Test Plan:
- Ran `bin/storage status`, saw all normal patches still valid.
- In some future diff, the instances application will use this to apply patches.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T6238
Differential Revision: https://secure.phabricator.com/D10848
Summary: ...way way down in PhabricatorController. Use it on ManiphestTaskDetailController to test it. Ref T4712. I think the pager logic to be added as part of T4712 can safely reside entirely within this method. As I said earlier, 5 parameters is a lot, so I don't really want to add more. Next diff would do the pagination logic and the diff after that would deploy it everywhere. If while deploying it everywhere I find something off, that will be a different diff.
Test Plan: viewed maniphest tasks and they looked as spiffy as ever.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T4712
Differential Revision: https://secure.phabricator.com/D10844
Summary:
Ref T5702. This is a forward-looking change which provides some very broad API improvements but does not implement them. In particular:
- Controllers no longer require `$request` to construct. This is mostly for T5702, directly, but simplifies things in general. Instead, we call `setRequest()` before using a controller. Only a small number of sites activate controllers, so this is less code overall, and more consistent with most constructors not having any parameters or effects.
- `$request` now offers `getURIData($key, ...)`. This is an alternate way of accessing `$data` which is currently only available on `willProcessRequest(array $data)`. Almost all controllers which implement this method do so in order to read one or two things out of the URI data. Instead, let them just read this data directly when processing the request.
- Introduce `handleRequest(AphrontRequest $request)` and deprecate (very softly) `processRequest()`. The majority of `processRequest()` calls begin `$request = $this->getRequest()`, which is avoided with the more practical signature.
- Provide `getViewer()` on `$request`, and a convenience `getViewer()` on `$controller`. This fixes `$viewer = $request->getUser();` into `$viewer = $request->getViewer();`, and converts the `$request + $viewer` two-liner into a single `$this->getViewer()`.
Test Plan:
- Browsed around in general.
- Hit special controllers (redirect, 404).
- Hit AuditList controller (uses new style).
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5702
Differential Revision: https://secure.phabricator.com/D10698
Summary:
Ref T2787. Currently, we kill a cart and dead-end the workflow on a charge failure.
Instead, fail the charge and reset the cart so the user can try using a valid payment instrument like a normal checkout workflow would.
Some shakiness/smoothing on WePay for the moment; PayPal is still made up since we don't have a "Hold" state yet.
Test Plan: {F215214}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T2787
Differential Revision: https://secure.phabricator.com/D10666
Summary: Fixes T6052. Allow installs to link to legal documents, etc., in the page footer.
Test Plan:
- Configured a footer.
- Viewed workboards (no footer).
- Viewed Conpherence (no apparent disruption, I think everything z-indexes over the footer).
- Viewed stuff on mobile (seems OK).
- Viewed login page (saw footer).
{F201718}
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: epriestley
Maniphest Tasks: T6052
Differential Revision: https://secure.phabricator.com/D10466
Summary: Ref T5655. Some discussion in D9839. Generally speaking, `Phabricator{$name}Application` is clearer than `PhabricatorApplication{$name}`.
Test Plan:
# Pinned and uninstalled some applications.
# Applied patch and performed migrations.
# Verified that the pinned applications were still pinned and that the uninstalled applications were still uninstalled.
# Performed a sanity check on the database contents.
Reviewers: btrahan, epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: hach-que, epriestley, Korvin
Maniphest Tasks: T5655
Differential Revision: https://secure.phabricator.com/D9982
Summary: Fixes T5541. Standalone dialog pages, including the high-security auth page, should all work fine on mobile.
Test Plan: {F173598}
Reviewers: chad, joshuaspence
Reviewed By: joshuaspence
Subscribers: epriestley
Maniphest Tasks: T5541
Differential Revision: https://secure.phabricator.com/D9799
Summary:
Ref T5446.
- For all callsites which do not specify a value, set `false` explicitly.
- Make `true` the default.
Test Plan: Used `grep`, then manually went through everything.
Reviewers: chad
Reviewed By: chad
Subscribers: epriestley
Maniphest Tasks: T5446
Differential Revision: https://secure.phabricator.com/D9687
Summary: Ran `arc lint --apply-patches --everything` over rP, mainly to change double quotes to single quotes where appropriate. These changes also validate that the `ArcanistXHPASTLinter::LINT_DOUBLE_QUOTE` rule is working as expected.
Test Plan: Eyeballed it.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin, hach-que
Differential Revision: https://secure.phabricator.com/D9431
Summary: Ref T5089. Adds a `security.require-multi-factor-auth` which forces all users to enroll in MFA before they can use their accounts.
Test Plan:
Config:
{F159750}
Roadblock:
{F159748}
After configuration:
{F159749}
- Required MFA, got roadblocked, added MFA, got unblocked.
- Removed MFA, got blocked again.
- Used `bin/auth strip` to strip MFA, got blocked.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5089
Differential Revision: https://secure.phabricator.com/D9285
Summary: The removes the sprite sheet 'icons' and replaces it with FontAwesome fonts.
Test Plan:
- Grep for SPRITE_ICONS and replace
- Grep for sprite-icons and replace
- Grep for PhabricatorActionList and choose all new icons
- Grep for Crumbs and fix icons
- Test/Replace PHUIList Icon support
- Test/Replace ObjectList Icon support (foot, epoch, etc)
- Browse as many pages as I could get to
- Remove sprite-icons and move remarkup to own sheet
- Review this diff in Differential
Reviewers: btrahan, epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin, hach-que
Differential Revision: https://secure.phabricator.com/D9052
Summary:
Ref T4398. This prompts users for multi-factor auth on login.
Roughly, this introduces the idea of "partial" sessions, which we haven't finished constructing yet. In practice, this means the session has made it through primary auth but not through multi-factor auth. Add a workflow for bringing a partial session up to a full one.
Test Plan:
- Used Conduit.
- Logged in as multi-factor user.
- Logged in as no-factor user.
- Tried to do non-login-things with a partial session.
- Reviewed account activity logs.
{F149295}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4398
Differential Revision: https://secure.phabricator.com/D8922
Summary: Ref T4843. This is a purely-visual link; label it with the application name.
Test Plan: {F149583}
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: epriestley
Maniphest Tasks: T4843
Differential Revision: https://secure.phabricator.com/D8927
Summary:
- Dialog pages currently have no titles or crumbs, and look shoddy. Add titles and crumbs.
- Dialog titles aren't always great for crumbs, add an optional "short title" for crumbs.
- `AphrontDialogResponse` is pure boilerplate. Allow controllers to just return a `DialogView` instead and get the same effect.
- Building dialogs requires a bit of boilerplate, and we generally construct them with no explicit `"action"`, which has some issues with T4593. Provide a convenience method to set the viewer and get a reasonable, explict submit URI.
Test Plan:
- Viewed dialog on its own.
- Viewed dialog as a dialog.
{F132353}
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D8577
Summary:
Ref T4593. There are a variety of clever attacks against OAuth which involve changing the redirect URI to some other URI on the same domain which exhibits unexpected behavior in response to an OAuth request. The best approach to dealing with this is for providers to lock to a specific path and refuse to redirect elsewhere, but not all providers do this.
We haven't had any specific issues related to this, but the anchor issue in T4593 was only a step away.
To mitigate this in general, we can reject the OAuth2 `'code'` parameter on //every// page by default, and then whitelist it on the tiny number of controllers which should be able to receive it.
This is very coarse, kind of overkill, and has some fallout (we can't use `'code'` as a normal parameter in the application), but I think it's relatively well-contained and seems reasonable. A better approach might be to whitelist parameters on every controller (i.e., have each controller specify the parameters it can receive), but that would be a ton of work and probably cause a lot of false positives for a long time.
Since we don't use `'code'` normally anywhere (as far as I can tell), the coarseness of this approach seems reasonable.
Test Plan:
- Logged in with OAuth.
- Hit any other page with `?code=...` in the URL, got an exception.
- Grepped for `'code'` and `"code"`, and examined each use to see if it was impacted.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: aran, epriestley
Maniphest Tasks: T4593
Differential Revision: https://secure.phabricator.com/D8499
Summary:
Unwinds the mess I made in D8422 / D8430:
- Remove `'fonts'`, since individual fonts can be included via Celerity now.
- Include Source Sans from the local source when a document uses it as a fontkit.
Test Plan: Browsed Diviner, saw Source Sans.
Reviewers: chad
Reviewed By: chad
CC: aran
Differential Revision: https://secure.phabricator.com/D8431
Summary:
- Allow Celerity to map and serve WOFF files.
- Add Source Sans Pro, Source Sans Pro Bold, and the corresponding LICENSE.
- Add a `font-source-sans-pro` resource for the font.
Test Plan:
- Changed body `font-face` to `'Source Sans Pro'`.
- Added `require_celerity_resource('font-source-sans-pro')` in StandardPageView.
Works in Firefox/Chrome/Safari, at least:
{F123296}
{F123297}
{F123298}
Reviewers: btrahan, chad
Reviewed By: chad
CC: chad, aran
Differential Revision: https://secure.phabricator.com/D8430
Summary:
Ref T2380. If an install has a CDN domain configured, but does not list it as an alternate domain (which is standard/correct, but not incredibly common, see T2380), we'll currently try to set anonymous cookies on it. These will correctly fail security rules.
Instead, don't try to set these cookies.
I missed this in testing yesterday because I have a file domain, but I also have it configured as an alternate domain, which allows cookies to be set. Generally, domain management is due for some refactoring.
Test Plan: Set file domain but not as an alternate, logged out, nuked file domain cookies, reloaded page. No error after patch.
Reviewers: btrahan, csilvers
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2380
Differential Revision: https://secure.phabricator.com/D8057
Summary: Fixes T4339. If you're anonymous, we use a digest of your session key to generate a CSRF token. Otherwise, everything works normally.
Test Plan: Logged out, logged in, tweaked CSRF in forms -- I'll add some inlines.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4339
Differential Revision: https://secure.phabricator.com/D8046
Summary:
Ref T4339. Ref T4310. Currently, sessions look like `"afad85d675fda87a4fadd54"`, and are only issued for logged-in users. To support logged-out CSRF and (eventually) external user sessions, I made two small changes:
- First, sessions now have a "kind", which is indicated by a prefix, like `"A/ab987asdcas7dca"`. This mostly allows us to issue session queries more efficiently: we don't have to issue a query at all for anonymous sessions, and can join the correct table for user and external sessions and save a query. Generally, this gives us more debugging information and more opportunity to recover from issues in a user-friendly way, as with the "invalid session" error in this diff.
- Secondly, if you load a page and don't have a session, we give you an anonymous session. This is just a secret with no special significance.
This does not implement CSRF yet, but gives us a client secret we can use to implement it.
Test Plan:
- Logged in.
- Logged out.
- Browsed around.
- Logged in again.
- Went through link/register.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4310, T4339
Differential Revision: https://secure.phabricator.com/D8043
Summary: Ref T4339. We have more magical cookie names than we should, move them all to a central location.
Test Plan: Registered, logged in, linked account, logged out. See inlines.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4339
Differential Revision: https://secure.phabricator.com/D8041
Summary: Ref T4310. Ref T3720. We use bare strings to refer to session types in several places right now; use constants instead.
Test Plan: grep; logged out; logged in; ran Conduit commands.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4310, T3720
Differential Revision: https://secure.phabricator.com/D7963
