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github.com/mitchellh/go-homedir has not received any update since 2019.
The last release of github.com/kyoh86/xdg was in 2020 and it has been
marked as deprecated by its author.
Replace these with internal functions.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Reviewed-by: Moritz Poldrack <moritz@poldrack.dev>
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Sometimes, aerc lists completely random messages when opening a mailbox.
It only happens when cache-headers=true.
According to RFC 3501:
> The combination of mailbox name, UIDVALIDITY, and UID must refer to
> a single immutable message on that server forever.
It turns out that several mailboxes may have the same UIDVALIDITY value
and may contain messages that have the same UID. When that happens, aerc
assumes that the headers for these messages are already cached and
returns them whereas they are for messages from another mailbox.
Add the mailbox name into the header cache key to avoid these confusing
collisions.
Fixes: 7aa71d334b27 ("imap: add option to cache headers")
Link: https://datatracker.ietf.org/doc/html/rfc3501#section-2.3.1.1
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Inwit <inwit@sindominio.net>
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Every message exchanged between the UI and the worker(s) is logged at
least twice with some obscure IDs and struct pointer names.
When enabling trace logging, this floods the files for very little or no
benefit and makes the meaningful logging message hard to catch.
Also, other messages tend to flood the output for no specific reason.
These are most of the time leftovers from the development process and
are not useful for tracking potential issues.
Remove these.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Inwit <inwit@sindominio.net>
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Use the worker's logging functions to have all imap related messages
prefixed by the account name.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Inwit <inwit@sindominio.net>
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Enable partial header fetching by creating config values for headers to
specifically include, or specifically exclude. The References field will
always be fetched, regardless of the include list. Envelope data is
always fetched, but is not shown with :toggle-headers, since it isn't in
the RFC822 struct unless explicitly included in the list.
Partial headers can break the cache on changes. Update the cache tag key
to include the state of the partially-fetched headers.
Partial header fetching can have a significant performance increase for
IMAP, and for all backends a resource improvement. Some data to support
this is below. Gathered by opening aerc, selecting a mailbox with
approximately 800 messages and scrolling to the end.
Received measured with nethogs, RAM from btop
Received | RAM
-------------------------------------
All Headers | 9,656 kb | 103 MB
Minimum Headers | 896 kb | 36 MB
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
Acked-by: Robin Jarry <robin@jarry.cc>
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Avoid such errors in the logs:
ERROR cache.go:187: cannot clean database 0: unexpected EOF
The cache now contains a tag mapped to a special key. This is not
a gob serialized cached header. Ignore it when pruning old cache
entries.
Fixes: 6ea0f18635a8 ("imap: clear cache on tag mismatch")
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
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Add size field to the cache struct and increment cache tag.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
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Tag the imap cache and clear it when the cache tag does not match the
current tag in the code. This ensures that the cache structure is always
consitent with our code base.
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
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Some user agents deliberately generate non-standard
message identifier lists in In-Reply-To and References headers.
Instead of failing silently, aerc now falls back to a desperate parser
scavaging whatever looking like <id-left@id-right>.
As the more liberal parser being substituted with, References header
are now stored for IMAP not only when there's a parsing error.
Fixes: 31d2f5be3cec ("message-info: add explicit References field")
Signed-off-by: Nguyễn Gia Phong <mcsinyx@disroot.org>
Acked-by: Robin Jarry <robin@jarry.cc>
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These issues were all reported by the new custom analyzer introduced in
previous commit.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
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Using a list of integers is not optimal. Use a bit mask instead.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
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Use the same name than the builtin "log" package. That way, we do not
risk logging in the wrong place.
Suggested-by: Tim Culverhouse <tim@timculverhouse.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
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The main goal is to ensure that by default, the log file (if configured)
does not grow out of proportions. Most of the logging messages in aerc
are actually for debugging and/or trace purposes.
Define clear rules for logging levels. Enforce these rules everywhere.
After this patch, here is what the log file looks like after starting up
with a single account:
INFO 2022/11/24 20:26:16.147164 aerc.go:176: Starting up version 0.13.0-100-g683981479c60 (go1.18.7 amd64 linux)
INFO 2022/11/24 20:26:17.546448 account.go:254: [work] connected.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
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Add an explicit References field to message info. This is useful for
storing information needed for threading without storing all of the
header values, keeping system RAM usage lower.
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Tested-by: Inwit <inwit@sindominio.net>
Acked-by: Robin Jarry <robin@jarry.cc>
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When cached headers are fetched, an action is posted back to the Worker
to immediately fetch the flags for the message from the server (we can't
know the flags state, therefore it's not cached). When scrolling, a lag
occurs when loading cached headers because the n+1 message has to wait
for the flag request to return before the cached headers are retrieved.
Collect the message UIDs in the UI that need flags, and fetch them based
off a debounce timer in a single request. Post the action from the UI to
eliminate an (ugly) go routine in the worker.
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
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The IMAP worker has a few methods that post a new Action to itself. This
can create a deadlock when the worker.Actions channel is full: The
worker can't accept a new Action because it's trying to post an action.
This is most noticeable when cached headers are enabled and the message
list is scrolled fast.
Use a goroutine to post actions to the worker when posting from within
the worker.
Fixes: https://todo.sr.ht/~rjarry/aerc/45
Fixes: 7aa71d334b27 ("imap: add option to cache headers")
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>
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Apply GoDoc comment policy (comments for humans should have a space
after the //; machine-readable comments shouldn't)
Use strings.ReplaceAll instead of strings.Replace when appropriate
Remove if/else chains by replacing them with switches
Use short assignment/increment notation
Replace single case switches with if statements
Combine else and if when appropriate
Signed-off-by: Moritz Poldrack <moritz@poldrack.dev>
Acked-by: Robin Jarry <robin@jarry.cc>
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Do not pass logger objects around anymore. Shuffle some messages to make
them consistent with the new logging API. Avoid using %v when a more
specific verb exists for the argument types.
The loggers are completely disabled (i.e. Sprintf is not even called)
by default. They are only enabled when redirecting stdout to a file.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
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Add option to cache headers for imap accounts. Cache db is located at
$XDG_CACHE_DIR/aerc/{account name}. The cache is cleaned of stale
entries when aerc is first opened.
Two new account level configuration options are introduced:
* cache-headers (Default: false)
* cache-max-age (Default: 30 days (720 hours))
The change in worker/imap/open.go is to set the selected directory. This
is required to access the UIDVALIDITY field, which is used in
combination with the message ID to form the key for use in the cache db.
The key structure is: "header.{UIDVALIDITY}.{UID}"
Where reasonable, cache does not stop aerc from running. In general, if
there is an error in the cache, aerc should continue working as usual.
Errors are either displayed to the user or logged.
All messages are stored without flags, and when retrieved have the flags
set to SEEN. This is to prevent UI flashes. A new method to
FetchMessageFlags is introduced to update flags of cached headers. This
is done asynchronously, and the user will see their messages appear and
then any flags updated. The message will initially show as SEEN, but
will update to unread. I considered updating the cache with the
last-known flag state, however it seems prudent to spare the R/W cycle
and assume that - eventually - all messages will end up read, and if it
isn't the update will occur rather quickly.
Note that leveldb puts a lock on the database, preventing multiple
instances of aerc from accessing the cache at the same time.
Much of this work is based on previous efforts by Vladimír Magyar.
Implements: https://todo.sr.ht/~rjarry/aerc/2
Thanks: Vladimír Magyar <vladimir@mgyar.me>
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Tested-by: inwit <inwit@sindominio.net>
Reviewed-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>
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