| Commit message (Collapse) | Author | Age |
|---|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The semantics of this endpoint are somewhat complex, and are incompletely captured in the associated docs change. For posterity, the intended workflow is:
1. Obtain Pilcrow's current VAPID key by connecting (it's in the events, either from boot or from the event stream).
2. Use the browser push APIs to create a push subscription, using that VAPID key.
3. Send Pilcrow the push subscription endpoint and keys, plus the VAPID key the client used to create it so that the server can detect race conditions with key rotation.
4. Wait for messages to arrive.
This commit does not introduce any actual messages, just subscription management endpoints.
When the server's VAPID key is rotated, all existing subscriptions are discarded. Without the VAPID key, the server cannot service those subscriptions. We can't exactly notify the broker to stop processing messages on those subscriptions, so this is an incomplete solution to what to do if the key is being rotated due to a compromise, but it's better than nothing.
The shape of the API endpoint is heavily informed by the [JSON payload][web-push-json] provided by browser Web Push implementations, to ease client development in a browser-based context. The idea is that a client can take that JSON and send it to the server verbatim, without needing to transform it in any way, to submit the subscription to the server for use.
[web-push-json]: https://developer.mozilla.org/en-US/docs/Web/API/PushSubscription/toJSON
Push subscriptions are operationally associated with a specific _user agent_, and have no inherent relationship with a Pilcrow login or token (session). Taken as-is, a subscription created by user A could be reused by user B if they share a user agent, even if user A logs out before user B logs in. Pilcrow therefore _logically_ associates push subscriptions with specific tokens, and abandons those subscriptions when the token is invalidated by
* logging out,
* expiry, or
* changing passwords.
(There are no other token invalidation workflows at this time.)
Stored subscriptions are also abandoned when the server's VAPID key changes.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
The taxonomy is now as follows:
* A _login_ is someone's identity for the purposes of authenticating to the service. Logins are not synchronized, and in fact are not published anywhere in the current API. They have a login ID, a name and a password.
* A _user_ is someone's identity for the purpose of participating in conversations. Users _are_ synchronized, as before. They have a user ID, a name, and a creation instant for the purposes of synchronization.
In practice, a user exists for every login - in fact, users' names are stored in the login table and are joined in, rather than being stored redundantly in the user table. A login ID and its corresponding user ID are always equal, and the user and login ID types support conversion and comparison to facilitate their use in this context.
Tokens are now associated with logins, not users. The currently-acting identity is passed down into app types as a login, not a user, and then resolved to a user where appropriate within the app methods.
As a side effect, the `GET /api/boot` method now returns a `login` key instead of a `user` key. The structure of the nested value is unchanged.
|
| |
|
|
| |
This is the leading edge of a larger storage refactoring, where repo types stop doing things like generating secrets or deciding whether to carry out an operation. To make this work, there is now a `Token` type that holds the complete state of a token, in memory.
|
| |
|
|
| |
We'll be building separate entities around this in future commits, to better separate the authentication data (non-synchronized and indeed "not public") from the chat data (synchronized and public).
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Rust 1.89 added a new warning:
warning: hiding a lifetime that's elided elsewhere is confusing
--> src/setup/repo.rs:4:14
|
4 | fn setup(&mut self) -> Setup;
| ^^^^^^^^^ ----- the same lifetime is hidden here
| |
| the lifetime is elided here
|
= help: the same lifetime is referred to in inconsistent ways, making the signature confusing
help: use `'_` for type paths
|
4 | fn setup(&mut self) -> Setup<'_>;
| ++++
I don't entirely agree with the style advice here, but lifetime elision style is an evolving area in Rust and I'd rather track the Rust team's recommendations than invent my own, so I've added all of them.
|
| |
|
|
| |
Missed in 9f7f82dbd9adee8ae18ae7ff2600b3e1dc8fadbc.
|
| | |
|
| | |
|
| | |
|
| |
|
|
|
|
|
|
| |
There are a couple of migration suggestions from `cargo fix --edition` that I have deliberately skipped, which are intended to make sure that the changes to `if let` scoping don't bite us. They don't, I'm pretty sure, and if I turn out to be wrong, I'd rather fix the scoping issues (as they arise) than use `match` (`cargo fix --edition`'s suggestion).
This change also includes a bulk reformat and a clippy cleanup.
NOTA BENE: As this requires a new Rust toolchain, you'll need to update Rust (`rustup update`, normally) or the server won't build. This also applies to the Debian builder Docker image; it'll need to be rebuilt (from scratch, pulling its base image again) as well.
|
| |
|
|
| |
The protocol here re-checks the caller's password, as a "I left myself logged in" anti-pranking check.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Canonicalization does two things:
* It prevents duplicate names that differ only by case or only by normalization/encoding sequence; and
* It makes certain name-based comparisons "case-insensitive" (generalizing via Unicode's case-folding rules).
This change is complicated, as it means that every name now needs to be stored in two forms. Unfortunately, this is _very likely_ a breaking schema change. The migrations in this commit perform a best-effort attempt to canonicalize existing channel or login names, but it's likely any existing channels or logins with non-ASCII characters will not be canonicalize correctly. Since clients look at all channel names and all login names on boot, and since the code in this commit verifies canonicalization when reading from the database, this will effectively make the server un-usuable until any incorrectly-canonicalized values are either manually canonicalized, or removed
It might be possible to do better with [the `icu` sqlite3 extension][icu], but (a) I'm not convinced of that and (b) this commit is already huge; adding database extension support would make it far larger.
[icu]: https://sqlite.org/src/dir/ext/icu
For some references on why it's worth storing usernames this way, see <https://www.b-list.org/weblog/2018/nov/26/case/> and the refernced talk, as well as <https://www.b-list.org/weblog/2018/feb/11/usernames/>. Bennett's treatment of this issue is, to my eye, much more readable than the referenced Unicode technical reports, and I'm inclined to trust his opinion given that he maintains a widely-used, internet-facing user registration library for Django.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
This normalizes the following values:
* login names
* passwords
* channel names
* message bodies, because why not
The goal here is to have a canonical representation of these values, so that, for example, the service does not inadvertently host two channels whose names are semantically identical but differ in the specifics of how diacritics are encoded, or two users whose names are identical.
Normalization is done on input from the wire, using Serde hooks, and when reading from the database. The `crate::nfc::String` type implements these normalizations (as well as normalizing whenever converted from a `std::string::String` generally).
This change does not cover:
* Trying to cope with passwords that were created as non-normalized strings, which are now non-verifiable as all the paths to verify passwords normalize the input.
* Trying to ensure that non-normalized data in the database compares reasonably to normalized data. Fortunately, we don't _do_ very many string comparisons (I think only login names), so this isn't a huge deal at this stage. Login names will probably have to Get Fixed later on, when we figure out how to handle case folding for login name verification.
|
| | |
|
| |
|
