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feat: never create IMAP folders

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Existing setups already have the folders created
and for new setups only INBOX should be used.
This commit is contained in:
link2xt
2026-01-27 04:17:38 +00:00
committed by l
parent 3f98e45c29
commit 1bf24618fa
7 changed files with 42 additions and 155 deletions
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61
src/imap.rs
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@@ -499,13 +499,7 @@ impl Imap {
.get_raw_config_int(constants::DC_FOLDERS_CONFIGURED_KEY)
.await?;
if folders_configured.unwrap_or_default() < constants::DC_FOLDERS_CONFIGURED_VERSION {
let is_chatmail = match context.get_config_bool(Config::FixIsChatmail).await? {
false => session.is_chatmail(),
true => context.get_config_bool(Config::IsChatmail).await?,
};
let create_mvbox = !is_chatmail || context.get_config_bool(Config::MvboxMove).await?;
self.configure_folders(context, &mut session, create_mvbox)
.await?;
self.configure_folders(context, &mut session).await?;
}
Ok(session)
@@ -563,9 +557,8 @@ impl Imap {
return Ok(false);
}
let create = false;
let folder_exists = session
.select_with_uidvalidity(context, folder, create)
.select_with_uidvalidity(context, folder)
.await
.with_context(|| format!("Failed to select folder {folder:?}"))?;
if !folder_exists {
@@ -873,10 +866,7 @@ impl Session {
// Collect pairs of UID and Message-ID.
let mut msgs = BTreeMap::new();
let create = false;
let folder_exists = self
.select_with_uidvalidity(context, folder, create)
.await?;
let folder_exists = self.select_with_uidvalidity(context, folder).await?;
let transport_id = self.transport_id();
if folder_exists {
let mut list = self
@@ -1082,10 +1072,7 @@ impl Session {
// MOVE/DELETE operations. This does not result in multiple SELECT commands
// being sent because `select_folder()` does nothing if the folder is already
// selected.
let create = false;
let folder_exists = self
.select_with_uidvalidity(context, folder, create)
.await?;
let folder_exists = self.select_with_uidvalidity(context, folder).await?;
ensure!(folder_exists, "No folder {folder}");
// Empty target folder name means messages should be deleted.
@@ -1140,8 +1127,7 @@ impl Session {
.await?;
for (folder, rowid_set, uid_set) in UidGrouper::from(rows) {
let create = false;
let folder_exists = match self.select_with_uidvalidity(context, &folder, create).await {
let folder_exists = match self.select_with_uidvalidity(context, &folder).await {
Err(err) => {
warn!(
context,
@@ -1195,9 +1181,8 @@ impl Session {
return Ok(());
}
let create = false;
let folder_exists = self
.select_with_uidvalidity(context, folder, create)
.select_with_uidvalidity(context, folder)
.await
.context("Failed to select folder")?;
if !folder_exists {
@@ -1708,17 +1693,16 @@ impl Session {
/// Attempts to configure mvbox.
///
/// Tries to find any folder examining `folders` in the order they go. If none is found, tries
/// to create any folder in the same order. This method does not use LIST command to ensure that
/// Tries to find any folder examining `folders` in the order they go.
/// This method does not use LIST command to ensure that
/// configuration works even if mailbox lookup is forbidden via Access Control List (see
/// <https://datatracker.ietf.org/doc/html/rfc4314>).
///
/// Returns first found or created folder name.
/// Returns first found folder name.
async fn configure_mvbox<'a>(
&mut self,
context: &Context,
folders: &[&'a str],
create_mvbox: bool,
) -> Result<Option<&'a str>> {
// Close currently selected folder if needed.
// We are going to select folders using low-level EXAMINE operations below.
@@ -1735,34 +1719,12 @@ impl Session {
self.close().await?;
// Before moving emails to the mvbox we need to remember its UIDVALIDITY, otherwise
// emails moved before that wouldn't be fetched but considered "old" instead.
let create = false;
let folder_exists = self
.select_with_uidvalidity(context, folder, create)
.await?;
let folder_exists = self.select_with_uidvalidity(context, folder).await?;
ensure!(folder_exists, "No MVBOX folder {:?}??", &folder);
return Ok(Some(folder));
}
}
if !create_mvbox {
return Ok(None);
}
// Some servers require namespace-style folder names like "INBOX.DeltaChat", so we try all
// the variants here.
for folder in folders {
match self
.select_with_uidvalidity(context, folder, create_mvbox)
.await
{
Ok(_) => {
info!(context, "MVBOX-folder {} created.", folder);
return Ok(Some(folder));
}
Err(err) => {
warn!(context, "Cannot create MVBOX-folder {:?}: {}", folder, err);
}
}
}
Ok(None)
}
}
@@ -1772,7 +1734,6 @@ impl Imap {
&mut self,
context: &Context,
session: &mut Session,
create_mvbox: bool,
) -> Result<()> {
let mut folders = session
.list(Some(""), Some("*"))
@@ -1813,7 +1774,7 @@ impl Imap {
let fallback_folder = format!("INBOX{delimiter}DeltaChat");
let mvbox_folder = session
.configure_mvbox(context, &["DeltaChat", &fallback_folder], create_mvbox)
.configure_mvbox(context, &["DeltaChat", &fallback_folder])
.await
.context("failed to configure mvbox")?;