It can be used e.g. as a default in the file saving dialog. Also display the original filename in
the message info. For these purposes add Param::Filename in addition to Param::File and use it as an
attachment filename in sent emails.
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).
simplify() is written to process incoming plaintext messages
and extract footers and quotes from them.
Incoming messages contain various quote styles
and simplify() implements heuristics to detects them.
If dehtml() output is processed by simplify(),
simplify() heuristics may erroneously detect
footers and quotes in produced plaintext.
dehtml() should directly detect quotes
instead of converting them to plaintext quotes
for parsing with simplify().
New algorithm improves group consistency
in cases of missing messages,
restored old backups and replies from classic MUAs.
Co-authored-by: Hocuri <hocuri@gmx.de>
Co-authored-by: link2xt <link2xt@testrun.org>
Otherwise sending a message without plaintext part
resets the signature. It is particularly dangerous
in multidevice case, because it's easy to accidentally
reset the signature on your other device with a non-text message.
Moved custom ToSql trait including Send + Sync from lib.rs to sql.rs.
Replaced most params! and paramsv! macro usage with tuples.
Replaced paramsv! and params_iterv! with params_slice!,
because there is no need to construct a vector.
This makes DC compatible with "multipart/signed" messages thus allowing switching to them someday
from the current "multipart/mixed" unencrypted message format.
try_decrypt() is a CPU-bound task.
When called from async function,
it should be wrapped in tokio::task::spawn_blocking().
Using tokio::task::spawn_blocking() is difficult here
because of &mail, &private_keyring and &public_keyring borrows,
so we should at least use tokio::task::block_in_place()
to avoid blocking the executor.
This makes it possible to fuzz test the functions
without exposing the module interface in the deltachat core
interface.
Also ensure that format_flowed will not grow a dependency
on deltachat core types.
If we move the detached signatures validation code out of try_decrypt(), we don't need to convert an
already parsed signed message part to Vec and then parse it back. Also this simplifies the
try_decrypt() semantics and return type. It can't make a good coffee anyway.
