`a.clone_from(&b)` is equivalent to `a = b.clone()` in functionality,
but can be overridden to reuse the resources of a to avoid unnecessary
allocations.
Connection establishment now happens only in one place in each IMAP loop.
Now all connection establishment happens in one place
and is limited by the ratelimit.
Backoff was removed from fake_idle
as it does not establish connections anymore.
If connection fails, fake_idle will return an error.
We then drop the connection and get back to the beginning of IMAP
loop.
Backoff may be still nice to have to delay retries
in case of constant connection failures
so we don't immediately hit ratelimit if the network is unusable
and returns immediate error on each connection attempt
(e.g. ICMP network unreachable error),
but adding backoff for connection failures is out of scope for this change.
Restart the IO scheduler if needed to make the new config value effective (for `MvboxMove,
OnlyFetchMvbox, SentboxWatch` currently). Also add `set_config_internal()` which doesn't affect
running the IO scheduler. The reason is that `Scheduler::start()` itself calls `set_config()`,
although not for the mentioned keys, but still, and also Rust complains about recursive async calls.
Motivation: Syncing these options will improve UX in very most cases and should be done. Other
candidates are less clear or are advanced options, we can reconsider that at some point later.
Approach:
- Sync options one-by-one when the corresponding option is set (even if to the same value).
- Don't sync when an option is reset to a default as defaults may differ across client versions.
- Check on both sides that the option should be synced so that if there are different client
versions, the synchronisation of the option is either done or not done in both directions.
Moreover, receivers of a config value need to check if a key can be synced because some settings
(e.g. Avatar path) could otherwise lead to exfiltration of files from a receiver's device if we
assume an attacker to have control of a device in a multi-device setting or if multiple users are
sharing an account.
- Don't sync `SyncMsgs` itself.
Message.set_text() and Message.get_text() are modified accordingly
to accept String and return String.
Messages which previously contained None text
are now represented as messages with empty text.
Use Message.set_text("".to_string())
instead of Message.set_text(None).
This removes the message that needed to be supplied to LogExt::log_err
calls. This was from a time before we adopted anyhow and now we are
better off using anyhow::Context::context for the message: it is more
consistent, composes better and is less custom.
The benefit of the composition can be seen in the FFI calls which need
to both log the error as well as return it to the caller via
the set_last_error mechanism.
It also removes the LogExt::ok_or_log_msg funcion for the same reason,
the message is obsoleted by anyhow's context.
To handle backups the UIs have to make sure they do stop the IO
scheduler and also don't accidentally restart it while working on it.
Since they have to call start_io from a bunch of locations this can be
a bit difficult to manage.
This introduces a mechanism for the core to pause IO for some time,
which is used by the imex function. It interacts well with other
calls to dc_start_io() and dc_stop_io() making sure that when resumed
the scheduler will be running or not as the latest calls to them.
This was a little more invasive then hoped due to the scheduler. The
additional abstraction of the scheduler on the context seems a nice
improvement though.
IMAP capabilities and selected folder are IMAP session,
not IMAP client property.
Moving most operations into IMAP session structure
removes the need to constantly check whether IMAP session exists
and reduces number of invalid states, e.g. when a folder is selected but
there is no connection.
Capabilities are determined immediately after logging in,
so there is no need for `capabilities_determined` flag anymore.
Capabilities of the server are always known if there is a session.
`should_reconnect` flag and `disconnect()` function are removed: we
drop the session on error. Even though RFC 3501 says that a client
SHOULD NOT close the connection without a LOGOUT, it is more reliable
to always just drop the connection, especially after an error.
Very small PR; Motivation: Easier navigation using Go-To-definition.
Because, using go-to-definition of rust-analyzer on parse() doesn't take you to the actual parse() implementation but its trait definiton. On the other hand, it's very easy to find EmailAddress::new().
This makes sure that under normal circumstances the LoginParam struct
is always fully validated, ensure future use does not have to be
careful with this.
The brittle handling of `server_flags` is also abstraced away from
users of it and is now handled entirely internally, as the flags is
really only a boolean a lot of the flag parsing complexity is removed.
The OAuth2 flag is moved into the ServerLoginParam struct as it really
belongs in there.
Scheduler has no Stopped state anymore. If Scheduler exists, it is
always started. Scheduler is stopped via Scheduler.stop(), which
consumes Scheduler and cannot fail.
* Make set_config() look a bit nicer
* Add OnlyFetchMvbox option
* Add test for the config
* Add option to only watch mvbox
This is supposed to support having a server-side rule which moves
emails to the mvbox already. The new option makes sure the mvbox is
wathched and also makes sure no messages are feched from folders other
than the mvbox and the spam folder if enabled. It does not interact
with the other settings.
* Fixup ignore conditions
* Cleanup some bits
* Watch the mvbox when `WatchMvboxOnly` is set
* Rename back to only_fetch_mvbox (flub said it's OK for him)
* typo
* clippy, more typos
Co-authored-by: Hocuri <hocuri@gmx.de>
While experimenting with encrypted storage, once configuring failed between 920 and 940. But as the "configured" config had already been written after progress 910, some part of the code thought we are configured, some didn't.
* fix missing MX resolver eg. on android
switching completely to /etc/resolv.conf (see #2780)
does not work at least on some Androids
(see https://github.com/deltachat/deltachat-android/issues/2151 )
therefore, we use the old approach as a fallback.
* log a warning, when we again have problems with figuring out MX resolvers
