Timo Sirainen [Mon, 25 Jun 2018 09:10:55 +0000 (12:10 +0300)]
imapc: Fix potential assert-crash when selecting empty mailbox
imapc_mailbox_fetch_state_finish() should have been expunging all the mails,
but it didn't happen since UIDNEXT wasn't received yet at the time EXISTS
was sent, so sync_uid_next was always 0 when checking it. Fix this by
calling imapc_mailbox_fetch_state_finish() only after SELECT/EXAMINE tagged
reply is received.
This practically happened only when index files were used. It could also
happen without index files, if the session had received new mails after
opening the mailbox, then getting disconnected and before reconnect was
finished all the mails were externally expunged.
Stephan Bosch [Wed, 20 Jun 2018 12:01:18 +0000 (14:01 +0200)]
lib-smtp: server: Make sure conn->state.data_failed is only set when no previous BDAT/BURL is pending.
Otherwise, the server would sometimes send 503 error for the first BDAT/BURL
command, while a subsequent command was actually failing earlier than the
initial one completed. Additionally, this caused a panic crash.
Panic was:
submission(stephan)<8353><C+7QBfysKluhIAAAmoV78g>: Panic: Input stream /home/stephan/Maildir/cur/1517515808.M176007P2993.johanna,S=1903,W=1956:2,DFS unexpectedly has references
Timo Sirainen [Tue, 19 Jun 2018 12:00:02 +0000 (15:00 +0300)]
quota-clone: Move state tracking to user context
This way there's no need to do multiple flushes when e.g. multiple
mailboxes change.
The flush had to be removed from close(), because the code path recurses:
* mailbox_transaction_commit() when mail is saved
* quota_count() starts counting the quota, which opens and closes mailbox
* quota_clone_mailbox_close() attempts to flush quota, which again recurses
into quota_count(), which returns 0 for the quota value.
Timo Sirainen [Sat, 16 Jun 2018 12:09:53 +0000 (15:09 +0300)]
imapc: Fix assert-crash when reconnecting expunges newly added messages
The initial FETCH 1:* during reconnection may notice some messages that are
missing and tries to expunge them. But those messages could still be in
delayed_sync_trans, and currently lib-index doesn't support expunging anything
but the latest mail from a transaction.
Timo Sirainen [Mon, 18 Jun 2018 13:19:55 +0000 (16:19 +0300)]
lib: If log write returns EAGAIN, use poll() instead of ioloop for waiting
As explained in 861d40b9aebabccae7d48e49a18cbc631ab1fefe commit message,
ioloop can call various callbacks and it can also recurse back to error
logging. Using poll() directly is safer.
Timo Sirainen [Mon, 18 Jun 2018 13:07:30 +0000 (16:07 +0300)]
lib: Revert earlier "log write is blocking" handling change
1) It was buggy, because it set O_NONBLOCK rather than removing it.
2) fd flags are shared across all the processes using the fd. We can't
reliably implement the process title update, because some processes are
blocking on the log write() before they change the process title.
Timo Sirainen [Sat, 16 Jun 2018 16:58:57 +0000 (19:58 +0300)]
lib-imap-client: Remove assert from imapc_client_mailbox_reconnect
It's possible for the assert to trigger if there are multiple reconnections.
imapc_connection_can_reconnect() checks a bit later whether the reconnection
can still be done.
Timo Sirainen [Mon, 18 Jun 2018 16:13:30 +0000 (19:13 +0300)]
imapc: Don't trust mail stream to have correct CRLFs
It's not that expensive to just recalculate them. If they're not correct in
the stream, it can result in e.g. truncated emails due to wrong virtual_size
being used in body_size calculation. The wrong CRLFs can especially happen
if plugins modify the stream in istream_opened() hook.
Timo Sirainen [Wed, 13 Jun 2018 17:09:32 +0000 (20:09 +0300)]
doveadm dump: Fix dumping "vsize" header in dovecot.index
It was trying to print it as the "vsize" header in dovecot.list.index.
This caused confusing output, as well as potentially accessing memory
out of bounds.
Timo Sirainen [Tue, 12 Jun 2018 14:08:04 +0000 (17:08 +0300)]
lib-dcrypt, mail-crypt: Fix leaking memory when using non-global keys
The users' private keys had one reference too much. Because of key cache,
most likely the keys were leaked only once at deinit.
Changed the i_stream_create_decrypt_callback() API so that it allows the
callback to create the key itself without having to store it anywhere.
In this case the key was already added to cache, which increased its
refcount. So an alternative fix would have been to simply unreferenced the
key before returning it. It's a bit ugly though to rely on such caches,
since without the cache the code would be buggy.
Timo Sirainen [Tue, 5 Jun 2018 11:22:08 +0000 (14:22 +0300)]
lib-compression: deflate ostream - Use Z_FINISH on final flush
Nowadays we have o_stream_finish(), so we can differentiate between
intermediate flush and final flush. Using this allows istream-zlib to
cleanly see that the stream ends.
Timo Sirainen [Tue, 5 Jun 2018 10:25:30 +0000 (13:25 +0300)]
lib: Add i_stream_nonseekable_try_seek()
This can be used by istreams to more easily implement seeking backwards when
it has to be done by first seeking back to offset 0 and reading from there.
Timo Sirainen [Thu, 31 May 2018 13:52:54 +0000 (16:52 +0300)]
imapc: Don't use RFC822.SIZE values for message body size calculation
If the RFC822.SIZE doesn't match the exact stream size, the body size
calculation will become wrong. The only downside to this patch is that
now the body size will need to be calculated by parsing the stream, but
there shouldn't be any need to do that unless the body was already
FETCHed, so it shouldn't cause any extra IMAP traffic.
Timo Sirainen [Thu, 31 May 2018 13:49:34 +0000 (16:49 +0300)]
lib-storage: Don't set virtual_size from index record if it's already set
The existing virtual_size may be a correct one, while the one in the index
may be wrong. This will be an especially important fix with the next
commit, because it would make the existing inexact_total_sizes=FALSE wrong.
Timo Sirainen [Mon, 4 Jun 2018 16:37:15 +0000 (19:37 +0300)]
lib-storage: Don't enforce creation of vsize header.
It's useful for caching quota=count and for STATUS (X-SIZE). If neither is
used the header shouldn't be created and kept up-to-date. If the header is
enabled, it also triggers creation of per-email vsize records.
Hannu Ylitalo [Tue, 29 May 2018 07:29:50 +0000 (10:29 +0300)]
dovecot.service: Update LimitNOFILE=65535
Current value of 8192 is too low for most production setups and it needs
to be changed every time something is deployed. Setting the default to
65535 is enough for most production environments so this would be one
task less when deploying a production platform.
Sergey Kitov [Mon, 19 Mar 2018 14:10:49 +0000 (16:10 +0200)]
global: Replace "if(auth_debug){i_debug(...)}" with e_debug(event, ...)
event is one of: global auth::auth_event,
auth_client_connection->event, auth_request->event,
login-common::event_auth. These event have category "auth".
Sergey Kitov [Mon, 19 Mar 2018 12:50:31 +0000 (14:50 +0200)]
global: Remove unnecessary checks for mail_debug and auth_request->debug
These checks are performed before calling auth_request_log_debug() and
push_notification_driver_debug(), while the same checks are performed
inside of these functions, and they return without doing anything.
Stephan Bosch [Sat, 26 May 2018 12:49:01 +0000 (14:49 +0200)]
lib-smtp: client: Avoid sending an XCLIENT command longer than 512 bytes.
Send several separate XCLIENT commands instead. This way, it complies with the
base SMTP line length limit and with Postfix' original specification for the
XCLIENT command.
With the XCLIENT fields that Dovecot currently uses, this is very unlikely to
happen. Still, this needs to be fixed to make things reliable.
Stephan Bosch [Sat, 26 May 2018 13:44:43 +0000 (15:44 +0200)]
lib-smtp: server: Provide full proxy data to the conn_proxy_data_updated() callback.
Before, it would only provide the fields that were updated, meaning that some
fields would remain unset, which caused problems for LMTP when more than one
XCLIENT command was sent or the ADDR field was not specified.