- This [is said to lead improve compilation
speed](https://matklad.github.io/2021/02/27/delete-cargo-integration-tests.html#Assorted-Tricks)
- When grepping for a function invocation, this makes it easy to see whether it's from a test or "real" code
- We're calling the files e.g. `chat_tests.rs` instead of `tests.rs` for the same reason why we moved `imap/mod.rs` to `imap.rs`: Otherwise, your editor always shows you that you're in the file `tests.rs` and you don't know which one.
This is only moving mimeparser and chat tests, because these were the
biggest files; we can move more files in subsequent PRs if we like it.
Fix https://github.com/deltachat/deltachat-core-rust/issues/6433
I at first only wanted to do it any outgoing messages, but @link2xt was
concerned that this may accidentally enable bcc_self, e.g. in the
following case:
- you send out a message
- it's deleted, e.g. via ephemeral messages
- Someone forwards this outgoing message to you again, e.g. via a
mailing list.
If we create an unpromoted group,
add a member there and then remove it
before we promote a group, there is no need to
add such member to the list of past members
and send the address of this member to the group
when it is promoted.
> _took quite some time until i found the time to finish this PR and to
find a time window that does not disturb other developments too much,
but here we are:_
this PR enables UI to improve "Saved messages" hugely, bringing it on
WhatsApp's "Starred Messages" or Telegram's "Saved Messages" level. with
this PR, UIs can add the following functionality with few effort ([~100
loc on iOS](https://github.com/deltachat/deltachat-ios/pull/2527)):
- add a "Save" button in the messages context menu, allowing to save a
message
- show directly in the chat if a message was saved, eg. by a little star
★
- in "Saved Messages", show the message in its context - so with author,
avatar, date and keep incoming/outgoing state
- in "Saved Messages", a button to go to the original message can be
added
- if the original message was deleted, one can still go to the original
chat
these features were often requested, in the forum, but also in many
one-to-one discussions, recently at the global gathering.
moreover, in contrast to the old method with "forward to saved", no
traffic is wasted - the messages are saved locally, and only a small
sync messages is sent around
this is how it looks out on iOS:
<img width="260" alt="Screenshot 2025-01-17 at 00 02 51"
src="https://github.com/user-attachments/assets/902741b6-167f-4af1-9f9a-bd0439dd20d0"
/> <img width="353" alt="Screenshot 2025-01-17 at 00 05
33"
src="https://github.com/user-attachments/assets/97eceb79-6e43-4a89-9792-2e077e7141cd"
/>
technically, still a copy is done from the original message (with
already now deduplicated blobs), so that things work nicely with
deletion modes; eg. you can save an important message and preserve it
from deletion that way.
jsonrpc can be done in a subsequent PR, i was implementing the UI on iOS
where that was not needed (and most API were part of message object that
is not in use in jsonrpc atm)
@hpk42 the forward issue we discussed earller that day is already solved
(first implementation did not had an explict save_msgs() but was using
forward_msgs(SELF) as saving - with the disadvantage that forwarding to
SELF is not working, eg. if one wants the old behaviour) acutally, that
made the PR a lot nicer, as now very few existing code is changed
<details>
<summary>previous considerations and abandoned things</summary>
while working on this PR, there was also the idea to just set a flag
“starred” in the message table and not copy anything. however, while
tempting, that would result in more complexity, questions and drawbacks
in UI:
- delete-message, delete-chat, auto-deletion, clear-chat would raise
questions - what do do with the “Starred”? having a copy in “Saved
Messages” does not raise this question
- newly saved messages appear naturally as “new” in “Saved Messages”,
simply setting a flag would show them somewhere in between - unless we
do additional effort
- “Saved Messages” already has its place in the UI - and allows to
_directly_ save things there as well - not easily doable with “starring”
- one would need to re-do many things that already exist in “Saved
Messages”, at least in core
- one idea to solve some of the issues could be to have “Starred” as
well as “Saved Messages” - however, that would irritate user, one would
remember exactly what was done with a message, and understand the fine
differences
whatsapp does this “starred”, btw, so when original is deleted, starred
is deleted as well. Telegram does things similar to us, Signal does
nothing. Whatsapp has a per-chat view for starred messages - if needed,
we could do sth. like that as well, however, let’s first see how far the
“all view” goes (in contrast to whatsapp, we have profiles for
separation as well)
for the wording: “saving” is what we’re doing here, this is much more on
point as “starring” - which is more the idea of a “bookmark”, and i
think, whatsapp uses this wording to not raise false expectations
(still, i know of ppl that were quite upset that a “starred” message was
deleted when eg. the chat was cleared to save some memory)
wrt webxdc app updates: options that come into mind were: _empty_ (as
now), _snapshot_ (copy all updates) or _shortcut_ (always open
original). i am not sure what the best solution is, the easiest was
_empty_, so i went for that, as it is (a) obvious, and what is already
done with forwarding and (b) the original is easy to open now (in
contrast to forwarding).
so, might totally be that we need or want to tweak things here, but i
would leave that outside the first iteration, things are not worsened in
that area
wrt reactions: as things are detached, similar to webxdc updates, we do
not not to show the original reactions - that way, one can use reactions
for private markers (telegram is selling that feature :)
to the icon: a disk or a bookmark might be other options, but the star
is nicer and also know from other apps - and anyways a but vague UX
wise. so i think, it is fine
finally, known issue is that if a message was saved that does not exist
on another device, it does not get there. i think, that issue is a weak
one, and can be ignored mostly, most times, user will save messages soon
after receiving, and if on some devices auto-deletion is done, it is
maybe not even expected to have suddenly another copy there
</details>
EDIT: once this is merged, detailed issues about what to do should be
filed for android/desktop (however, they do not have urgency to adapt,
things will continue working as is)
---------
Co-authored-by: Hocuri <hocuri@gmx.de>
This partially restores the fix from c9cf2b7f2e
that was removed during the addition of new group consistency at de63527d94
but only for "Member added" messages.
Multiple "Member added" messages happen
when the same QR code is processed multiple times
by multiple devices.
Some migrations change the `config` table, but they don't update the
cache. While this wasn't the cause for
https://github.com/deltachat/deltachat-core-rust/issues/6432, it might
have caused a similar bug, so, let's clear the config cache after every
migration.
Users report that in a setup with Android (1.50.4 from F-Droid) and Desktop (1.48.0 x86_64 .deb
release) and chatmail account `bcc_self` was reverted to 0 on Android, resulting in messages sent
from Android not appearing on Desktop. This might happen because of the bug in migration #127, it
doesn't handle `delete_server_after` > 1. Existing chatmail configurations having
`delete_server_after` != 1 ("delete at once") should get `bcc_self` enabled, they may be multidevice
configurations:
- Before migration #127, `delete_server_after` was set to 0 upon a backup export, but
then `bcc_self` is enabled instead (whose default is changed to 0 for chatmail).
- The user might set `delete_server_after` to a value other than 0 or 1 when that was
possible in UIs.
So let's add another migration fixing this. But still don't check `is_chatmail` for simplicity.
Using `repeat_vars()` to generate SQL statements led to some of them having more than
`SQLITE_MAX_VARIABLE_NUMBER` parameters and thus failing, so let's get rid of this pattern. But
let's not optimise for now and just repeat executing an SQL statement in a loop, all the places
where `repeat_vars()` is used seem not performance-critical and containing functions execute other
SQL statements in loops. If needed, performance can be improved by preparing a statement and
executing it in a loop. An exception is `lookup_chat_or_create_adhoc_group()` where `repeat_vars()`
can't be replaced with a query loop, there we need to replace the `SELECT` query with a read
transaction creating a temporary table which is used to perform the SELECT query then.
Before, `Chat::why_cant_send()` just returned `CantSendReason` after the first unsuccessful check
allowing to handle the result and finally send the message if the condition is acceptable in which
case the remaining checks are not done. This didn't result in any bugs, but to make the code more
robust let's add a functional parameter to filter failed checks without early return.
This implements new group consistency algorithm described in
<https://github.com/deltachat/deltachat-core-rust/issues/6401>
New `Chat-Group-Member-Timestamps` header is added
to send timestamps of member additions and removals.
Member is part of the chat if its addition timestamp
is greater or equal to the removal timestamp.
Currently Delta Chat puts self address in the To field
to avoid the To field being empty.
There is a plan to put empty `hidden-recipients`
group there, this fix prepares the receiver for such messages.
New Delta Chat is going to send self-sent messages
with undisclosed recipients instead of placing self into the `To` field.
To avoid assigning broadcast list messages to Saved Messages chat,
we should check the mailing list headers
before attempting to assign to Saved Messages.
First of all, chatmail servers normally forbid to send unencrypted mail, so if we know the peer's
key, we should encrypt to it. Chatmail setups have `E2eeEnabled=1` by default and this isn't
possible to change in UIs, so this change fixes the chatmail case. Additionally, for chatmail, if a
peer has `EncryptPreference::Reset`, let's handle it as `EncryptPreference::NoPreference` for the
reason above. Still, if `E2eeEnabled` is 0 for a chatmail setup somehow, e.g. the user set it via
environment, let's assume that the user knows what they do and ignore `IsChatmail` flag.
NB:
- If we don't know the peer's key, we should try to send an unencrypted message as before for a
chatmail setup.
- This change doesn't remove the "majority rule", but now the majority with
`EncryptPreference::NoPreference` can't disable encryption if the local preference is `Mutual`. To
disable encryption, some peer should have a missing peerstate or, for the non-chatmail case, the
majority should have `EncryptPreference::Reset`.
Change `BccSelf` default to 0 for chatmail configurations and enable it upon a backup export. As for
`DeleteServerAfter` who was set to 0 upon a backup export before, make its default dependent on
`BccSelf` for chatmail. We don't need `BccSelf` for chatmail by default because we assume
single-device use. Also `BccSelf` is needed for "classic" email accounts even if `DeleteServerAfter`
is set to "immediately" to detect that a message was sent if SMTP server is slow to respond and
connection is lost before receiving the status line which isn't a problem for chatmail servers.
Even if UIs don't call `Message::force_sticker()`, they don't want conversions of `Sticker` to
`Image` if it's obviously not an image, particularly, has non-image extension. Also UIs don't want
conversions of `Sticker` to anything other than `Image`, so let's keep the `Sticker` viewtype in
this case.
In multi-device case `vg-request-with-auth` left on IMAP may result in situation when Bob joins the
group, then leaves it, then second Alice device comes online and processes `vg-request-with-auth`
again and adds Bob back. So we should IMAP-delete `vg-request-with-auth`. Another device will know
the Bob's key from Autocrypt-Gossip. It's not a problem if Alice loses state (restores from an old
backup) or goes offline for long before sending `vg-member-added`, anyway it may not be delivered by
the server, rather Bob should retry sending SecureJoin messages as he is a part which wants to join,
so let's not solve this for now.
Add a `create` param to `select_with_uidvalidity()` instead of always trying to create the folder
and return `Ok(false)` from it if the folder doesn't exist and shouldn't be created, and handle this
in `store_seen_flags_on_imap()` by just removing "jobs" from the `imap_markseen` table. Also don't
create the folder in other code paths where it's not necessary.
This is to avoid revalidating HTTP cache too frequently (and have many parallel revalidation tasks)
if revalidation fails or the HTTP request takes some time. The stale period >= 1 hour, so 1 more
minute won't be a problem.
It was called from `receive_imf` when an outgoing message is received. But
`Imap::fetch_new_messages()` already calls `chat::mark_old_messages_as_noticed()` which does the job
better (per-message).
SQL statements fail if the number of variables
exceeds `SQLITE_LIMIT_VARIABLE_NUMBER`.
Remaining repeat_vars() calls are difficult to replace
and use arrays passed from the UI,
e.g. forwarded message IDs or marked as seen IDs.
