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NEWS
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v2.4.0 2025-01-24 Aki Tuomi <[email protected]>
* Change configuration syntax to match new Dovecot configuration syntax.
* vacation: Reduce default days to 60 from infinity
* vacation: vacation_max_period=0 is now an error.
* Version has been changed to match Dovecot version.
+ Added i;unicode-casecmp comparator.
- Lots of bugs have been fixed.
v0.5.21 2023-08-15 Aki Tuomi <[email protected]>
- sieve: Using the deleteheader action on a message with a broken/invalid
header can cause the Sieve interpreter to crash with an assert panic.
This can happen e.g. when the message is missing the empty EOH line
between the headers and the body of the message. Fixes:
Panic: file edit-mail.c: line 820 (edit_mail_headers_parse):
assertion failed: (body_offset > 0).
- sieve: Pigeonhole added an extra Message-ID header during mail
forwarding when the existing one was invalid. Now it adds the
Message-ID only if it is entirely missing. Existing Message-ID(s) are
left unchanged.
v0.5.20 2022-12-12 Aki Tuomi <[email protected]>
* No changes - release done to keep version numbers synced.
v0.5.19 2022-05-10 Aki Tuomi <[email protected]>
* No changes - release done to keep version numbers synced.
v0.5.18 2022-02-03 Aki Tuomi <[email protected]>
- duplicate: Users without a home directory can crash with Sieve when
using duplicate database. v2.3.17 regression.
- imapsieve: When mail was expunged when processing imapsieve events, a
crash could occur. Fixes Panic: file mail-index-map.c:
line 558 (mail_index_map_lookup_seq_range): assertion failed: (first_uid > 0)
- managesieve-login: Proxy didn't support forwarding the forward_* passdb fields.
- redirect: Sieve would crash if redirect after keep-equivalent action failed.
- sieve: Interpreter crashes when the Sieve index extension is used with
index zero.
- vnd.dovecot.filter: Envelope sender string may become corrupted when
Sieve scripts are using vnd.dovecot.filter. This could end up
corrupting mbox's From line and return wrong envelope sender string in
Sieve tests.
v0.5.17.1 2021-12-07 Aki Tuomi <[email protected]>
- managesieve: Dovecot failed to start if ssl_ca was too large.
- lib-sieve-tool: Binaries failed to run if ssl_ca was too large.
v0.5.17 2021-10-28 Aki Tuomi <[email protected]>
- duplicate: The Sieve duplicate test is prone to false negatives when
the user receives many e-mails concurrently, meaning that duplicate
deliveries can still occur.
- fileinto: v2.3.16 regression: Sieve delivery crashes if mail is
delivered to non-existing and existing folder.
- imap-filter-sieve: v2.3.15 regression: The CPU limits on Sieve
execution are too easily exceeded in IMAP context (the IMAPSieve and
FILTER=SIEVE capabilities). Changed the default to unlimited CPU time
for IMAP context, since similar excessive resource usage can be caused
by other means as well. The CPU limits on Sieve scripts executed at
LDA/LMTP delivery are still enforced by default.
- redirect: The Sieve redirect action has protections against users
triggering mail loops. Unfortunately, the detection of a redirect mail
loop sometimes causes the message to get lost if no other Sieve action
is applied that delivers the message somewhere else.
- redirect: v2.3.16 regression: With certain Sieve scripts if redirect
fails due to temporary failure, the lmtp process may crash after the
delivery. Fixes:
Panic: file mail-user.c: line 229 (mail_user_deinit):
assertion failed: ((*user)->refcount == 1).
v0.5.16 2021-08-06 Timo Sirainen <[email protected]>
* .dovecot.sieve.log file now includes year in the header.
* Change Sieve script result execution to delay definitive action
execution to the end of a successful Sieve script execution session.
This is part of an effort to solve problems with the Sieve duplicate
test. As a side-effect, some rare temporary-error cases yield
different results, in which partial failure is more likely.
v0.5.15 2021-06-21 Aki Tuomi <[email protected]>
* CVE-2020-28200: Sieve interpreter is not protected against abusive
scripts that claim excessive resource usage. Fixed by limiting the
user CPU time per single script execution and cumulatively over
several script runs within a configurable timeout period. Sufficiently
large CPU time usage is summed in the Sieve script binary and execution
is blocked when the sum exceeds the limit within that time. The block
is lifted when the script is updated after the resource usage times out.
* Disconnection log messages are now more standardized across services.
They also always now start with "Disconnected" prefix.
- managesieve: Commands pipelined together with and just after the
authenticate command cause these commands to be executed twice.
v0.5.14 2021-03-04 Aki Tuomi <[email protected]>
* IMAP FILTER command: cmd-filter-sieve - Do not allow NIL as
script name argument.
v0.5.13 2021-01-04 Aki Tuomi <[email protected]>
- duplicate: The test was handled badly in a multiscript (sieve_before,
sieve_after) scenario in which an earlier script in the sequence with
a duplicate test succeeded, while a later script caused a runtime
failure. In that case, the message is recorded for duplicate tracking,
while the message may not actually have been delivered in the end.
- editheader: Sieve interpreter entered infinite loop at startup when
the "editheader" configuration listed an invalid header name. This
problem can only be triggered by the administrator.
- relational: The Sieve relational extension can cause a segfault at
compile time. This is triggered by invalid script syntax. The segfault
happens when this match type is the last argument of the test command.
This situation is not possible in a valid script; positional arguments
are normally present after that, which would prevent the segfault.
- sieve: For some Sieve commands the provided mailbox name is not
properly checked for UTF-8 validity, which can cause assert crashes at
runtime when an invalid mailbox name is encountered. This can be
caused by the user by writing a bad Sieve script involving the
affected commands ("mailboxexists", "specialuse_exists").
This can be triggered by the remote sender only when the user has
written a Sieve script that passes message content to one of the
affected commands.
- sieve: Large sequences of 8-bit octets passed to certain Sieve
commands that create or modify message headers that allow UTF-8 text
(vacation, notify and addheader) can cause the delivery or IMAP
process (when IMAPSieve is used) to enter a memory-consuming
semi-infinite loop that ends when the process exceeds its memory
limits. Logged in users can cause these hangs only for their own
processes.
v0.5.11 2020-08-12 Aki Tuomi <[email protected]>
* managesieve: managesieve_max_line_length setting is now a "size" type
instead of just number of bytes. This allows using e.g. "64k" as the
value.
- lib-sieve: When folding white space is used in the Message-ID header,
it is not stripped away correctly before the message ID value is used,
causing e.g. garbled log lines at delivery.
v0.5.10 2020-03-06 Aki Tuomi <[email protected]>
* imap_sieve_filter: Change result action logging to include IMAP UID
- vacation: Addresses were compared case-sensitively.
v0.5.9 2019-12-04 Aki Tuomi <[email protected]>
+ Added events for Sieve and ManageSieve, see
https://doc.dovecot.org/admin_manual/list_of_events/#pigeonhole
+ Pigeonhole: Implement the Sieve "special-use" extension described in
RFC 8579.
- duplicate: Test only compared the handles which would cause
different values to be cached as the same duplicate test. Fix to also
compare the actual hashes.
- imap_sieve_filter: IMAP FILTER Command had various bugs in error
handling. Errors may have been duplicated for each email, errors
may have been missing entirely, command tag and ERRORS/WARNINGS
parameters were swapped.
v0.5.8 2019-10-08 Aki Tuomi <[email protected]>
- Sieve may leak resources in rare cases when a redirect, vacation or
report action fails to send the message. This mainly applies when
Sieve is executed in IMAP context; i.e., for the IMAPSIEVE or
FILTER=SIEVE capabilities.
v0.5.7.1 2019-07-23 Timo Sirainen <[email protected]>
- dsync: Sieve script syncing failed if mailbox attributes weren't
enabled.
v0.5.7 2019-07-12 Aki Tuomi <[email protected]>
+ vacation: Made the subject for the automatic response message produced
by the Sieve vacation action configurable. Both the default subject
(if the script defines none) and the subject template (e.g. used to
add a subject prefix) can be configured.
- dsync: dsync-replication does not synchronize Sieve scripts.
- imap_sieve_filter: Reduce FILTER=SIEVE verbosity over IMAP connection.
- testsuite: Pigeonhole testsuite segfaulted if it was compiled with
GCC 9
v0.5.6 2019-04-30 Aki Tuomi <[email protected]>
+ sieve: Redirect loop prevention is sometimes ineffective. Improve
existing loop detection by also recognizing the
X-Sieve-Redirected-From header in incoming messages and dropping
redirect actions when it points to the sending account. This header
is already added by the redirect action, so this improvement only
adds an additional use of this header.
- sieve: Prevent execution of implicit keep upon temporary failure
occurring at runtime.
v0.5.5 2019-03-05 Stephan Bosch <[email protected]>
+ IMAPSieve: Add new plugin/imapsieve_expunge_discarded setting which
causes messages discarded by an IMAPSieve script to be expunged
immediately, rather than only being marked as "\Deleted" (which is
still the default behavior).
- IMAPSieve: Fix panic crash occurring when a COPY command copies
messages from a virtual mailbox where the source messages originate
from more than a single real mailbox.
- imap4flags extension: Fix deleting all keywords. When the action
resulted in all keywords being removed, no changes were actually
applied.
- variables extension: Fix truncation of UTF-8 variable content. The
maximum size of Sieve variables was enforced by truncating the
variable string content bluntly at the limit, but this does not
consider UTF-8 code point boundaries. This resulted in broken UTF-8
strings. This problem also surfaced for variable modifiers, such as
the ":encodeurl" modifier provided by the Sieve "enotify" extension.
In that case, the resulting URI escaping could also be truncated
inappropriately.
- IMAPSieve, IMAP FILTER=SIEVE: Fix replacing a modified message. Sieve
scripts running in IMAPSIEVE or IMAP FILTER=SIEVE context that
modify the message, stored the message a second time, rather than
replacing the originally stored unmodified message.
- Fix segmentation fault occurring when both the sieve_extprograms
plugin (for the Sieve interpreter) and the imap_filter_sieve plugin
(for IMAP) are loaded at the same time. A symbol was defined by both
plugins, causing a clash when both were loaded.
v0.5.4 2018-11-23 Stephan Bosch <[email protected]>
* Adjustments to several changes in Dovecot v2.3.4 make this Pigeonhole
release dependent on that Dovecot release; it will not compile against
older Dovecot versions. And, conversely, you need to upgrade
Pigeonhole when upgrading Dovecot to v2.3.4.
* The changes regarding the default postmaster_address in Dovecot v2.3.4
mainly apply to Pigeonhole. The new default should work for all
existing installations, thereby fixing several reported v2.3/v0.5
migration problems.
- IMAP FILTER=SIEVE capability: Fix assert crash occurring when running
UID FILTER on a Sieve script with errors.
v0.5.3 2018-10-01 Stephan Bosch <[email protected]>
- Fix assertion panic occurring when managesieve service fails to open
INBOX while saving a Sieve script. This was caused by a lack of
cleanup after failure.
- Fix specific messages causing an assert panic with actions that
compose a reply (e.g. vacation). With some rather weird input from the
original message, the header folding algorithm (as used for composing
the References header for the reply) got confused, causing the panic.
- IMAP FILTER=SIEVE capability: Fix FILTER SIEVE SCRIPT command parsing.
After finishing reading the Sieve script, the command parsing
sometimes didn't continue with the search arguments. This is a time-
critical bug that likely only occurs when the Sieve script is sent in
the next TCP frame.
v0.5.2 2018-06-29 Stephan Bosch <[email protected]>
+ Implement plugin for the a vendor-defined IMAP capability called
"FILTER=SIEVE". It adds the ability to manually invoke Sieve filtering
in IMAP. More information can be found in
doc/plugins/imap_filter_sieve.txt.
- The Sieve addess test caused an assertion panic for invalid addresses
with UTF-8 codepoints in the localpart. Fixed by properly detecting
invalid addresses with UTF-8 codepoints in the localpart and skipping
these like other invalid addresses while iterating addresses for the
address test.
- Make the length of the subject header for the vacation response
configurable and enforce the limit in UTF-8 codepoints rather than
bytes. The subject header for a vacation response was statically
truncated to 256 bytes, which is too limited for multi-byte UTF-8
characters.
- Sieve editheader extension: Fix assertion panic occurring when it is
used to manipulate a message header with a very large header field.
- Properly abort execution of the sieve_discard script upon error.
Before, the LDA Sieve plugin attempted to execute the sieve_discard
script when an error occurs. This can lead to the message being lost.
- Fix the interaction between quota and the sieve_discard script. When
quota was used together with a sieve_discard script, the message
delivery did not bounce when the quota was exceeded.
v0.5.1 28-03-2018 Stephan Bosch <[email protected]>
- Explicitly disallow UTF-8 in localpart in addresses parsed from Sieve
script.
- editheader extension: Corrected the stream position calculations
performed while making the modified message available as a stream.
Pigeonhole Sieve crashed in LMTP with an assertion panic when the
Sieve editheader extension was used before the message was redirected.
Experiments indicate that the problem occurred only with LMTP and that
LDA is not affected.
- fileinto extension: Fix assert panic occurring when fileinto is used
without being listed in the require line, while the copy extension is
listed there. This is a very old bug.
- imapsieve plugin: Do not assert crash or log an error for messages
that disappear concurrently while applying Sieve scripts. This event
is now logged as a debug message.
- Sieve extprograms plugin: Large output from "execute" command crashed
delivery. Fixed buffering issue in code that handles output from the
external program.
v0.5.0.1 05-01-2018 Stephan Bosch <[email protected]>
- imap4flags extension: Fix binary corruption occurring when
setflag/addflag/removeflag flag-list is a variable.
- sieve-extprograms plugin: Fix segfault occurring when used in
IMAPSieve context.
v0.5.0 24-12-2017 Stephan Bosch <[email protected]>
* editheader extension: The implementation of header modifications is
heavily updated. Although the functionality has not changed, the
underlying code was updated to address several static analysis
warnings, runtime integer arithmetic warnings (Clang), and to match
updates in the Dovecot stream API.
+ variables extension: Made the maximum scope and variable size
configurable.
+ subaddress: Support multiple recipient_delimiters.
- enotify extension: mailto method: Fixed parsing of mailto URI with
only a header part.
- enotify plugin: mailto method: Make sure the "From:" header is set to
a usable address and not "(null)".
- Fixed writing address headers to outgoing messages. Sometimes headers
were MIME-encoded twice, yielding invalid results.
v0.4.23 20-03-2018 Stephan Bosch <[email protected]>
- editheader extension: Corrected the stream position calculations
performed while making the modified message available as a stream.
Pigeonhole Sieve crashed in LMTP with an assertion panic when the
Sieve editheader extension was used before the message was redirected.
Experiments indicate that the problem occurred only with LMTP and that
LDA is not affected.
- fileinto extension: Fix assert panic occurring when fileinto is used
without being listed in the require line, while the copy extension is
listed there. This is a very old bug.
- imapsieve plugin: Do not log an error for messages that disappear
concurrently while applying Sieve scripts. This is a further
improvement on the imapsieve fix in the previous release (which fixed
a panic). This event is now logged as a debug message.
v0.4.22 01-03-2018 Stephan Bosch <[email protected]>
- Fixed filesystem path handling problem: sieve plugin could have
assert-crashed with specific path lengths with: "Panic: file
realpath.c: line 86 (path_normalize): assertion failed: (npath_pos +
1 < npath + asize)".
- Sieve extprograms plugin: Large output from "execute" command crashed
delivery. Fixed buffering issue in code that handles output from the
external program.
- editheader extension: Extensively reworked the low-level
implementation of adding and removing headers. This solves a few
integer arithmetic problems reported by Clang runtime checks, but also
improves code structure and reliability in general.
- imapsieve: Fix assert crash occurring when selected messages are
expunged concurrently by the time Sieve filter is to be applied.
- imap4flags extension: Fix binary byte-code corruption occurring when
the setflag, addflag, or removeflag command's flag-list is a variable.
- enotify extension: mailto method: Fixed parsing of mailto URI with
only a header part.
- enotify extension: mailto method: Make sure "From:" header is set to a
usable address and not "(null)".
- Fixed writing address headers to outgoing messages. It sometimes
erroneously applied another layer of MIME header encoding.
v0.4.21 12-10-2017 Stephan Bosch <[email protected]>
* redirect action: Always set the X-Sieve-Redirected-From header to
sieve_user_email if configured. Before, it would use the envelope recipient
instead if available, which makes no sense if the primary e-mail address is
available.
+ vacation extension: Allow ignoring the envelope sender while composing the
"To:" header for the reply. Normally, the "To:" header is composed from
the address found in the "Sender", "Resent-From" or "From" headers that is
equal to the envelope sender. If none is then found, the bare envelope
sender is used. This change adds a new setting
"sieve_vacation_to_header_ignore_envelope". With this setting enabled, the
"To:" header is always composed from those headers in the source message.
The new setting thus allows ignoring the envelope, which is useful e.g.
when SRS is used.
+ vacation extension: Compose the "To:" header from the full sender address
found in the first "Sender:", "From:" or "Resent-From:" header. Before, it
would create a "To:" header without a phrase part. The new behavior is
nicer, since the reply will be addressed to the sender by name if possible.
- LDA Sieve plugin: Fixed sequential execution of LDAP-based scripts. A
missing LDAP-based script could cause the script sequence to exit earlier.
- sieve-filter: Removed the (now) duplicate utf8 to mutf7 mailbox name
conversion. This caused problems with mailbox names containing UTF-8
characters. The Dovecot API was changed years ago, but apparently
sieve-filter was never updated.
v0.4.20 27-08-2017 Stephan Bosch <[email protected]>
+ Made the retention period for redirect duplicate identifiers configurable.
For accounts that perform many redirects, the lda-dupes database could grow
to impractical sizes. Changed the default retention period from 24 to 12
hours.
- sieve-filter: Fixed memory leak: forgot to clean up script binary at end of
execution. Normally, this would merely be an inconsequential memory leak.
However, when the script comes from an LDAP storage, this would cause io
leak warnings.
- managesieve-login: Fixed handling of AUTHENTICATE command. A second
authenticate command would be parsed wrong. This problem was caused by
changes in the previous release.
- LDA Sieve plugin: Fixed minor memory leak caused by not cleaning up the
sieve_discard script.
v0.4.19 26-06-2017 Stephan Bosch <[email protected]>
* This release adjusts Pigeonhole to several changes in the Dovecot API,
making it depend on Dovecot v2.2.31. Previous versions of Pigeonhole will
produce compile warnings with the recent Dovecot releases (but still work
ok).
- Fixed bug in handling of implicit keep in some cases. Implicit side-effects,
such as assigned flags, were not always applied correctly. This is in
essence a very old bug, but it was exposed by recent changes.
- include extension: Fixed segfault that (sometimes) occurred when the global
script location was left unconfigured.
v0.4.18 12-04-2017 Stephan Bosch <[email protected]>
+ imapsieve plugin: Implemented the copy_source_after rule action. When this
is enabled for a mailbox rule, the specified Sieve script is executed for
the message in the source mailbox during a "COPY" event. This happens only
after the Sieve script that is executed for the corresponding message in the
destination mailbox finishes running successfully.
+ imapsieve plugin: Added non-standard Sieve environment items for the source
and destination mailbox.
- multiscript: The execution of the discard script had an implicit "keep",
rather than an implicit "discard".
v0.4.17 26-02-2017 Stephan Bosch <[email protected]>
- LDA Sieve plugin: Fixed handling of an early explicit keep during
multiscript execution. Action side-effects and the message snapshot would be
lost at the final stage where the implicit keep is evaluated. This could
result in the IMAP flags assigned to the message to be forgotten or that
headers modified by the "editheader" extension would revert to their
original state.
- file script storage: Amended the up-to-date time stamp comparison for
on-disk binaries to include nanoseconds. This will fix problems occurring
when both binary and script are saved within the same second. This fix is
ineffective on older systems that have no support for nanoseconds in stat()
timestamps, which should be pretty rare nowadays.
- file script storage: Improve saving and listing permission error to include
more details.
- imapsieve plugin: Make sure "INBOX" is upper case in static mailbox rules.
Otherwise, the mailbox name would never match, since matching is performed
case-sensitively and Dovecot only returns the upper-cased "INBOX".
- imapsieve plugin: Fixed assert failure occurring when used with virtual
mailboxes.
- doveadm sieve plugin: Fixed crash when setting Sieve script via attribute's
string value.
v0.4.16 30-10-2016 Stephan Bosch <[email protected]>
* Part of the Sieve extprograms implementation was moved to Dovecot, which
means that this release depends on Dovecot v2.2.26+.
* ManageSieve: The PUTSCRIPT command now allows uploading empty Sieve scripts.
There was really no good reason to disallow doing that.
+ Sieve vnd.dovecot.report extension:
+ Added a Dovecot-Reporting-User field to the report body, which contains
the e-mail address of the user sending the report.
+ Added support for configuring the "From:" address used in the report.
+ LDA sieve plugin: Implemented support for a "discard script" that is run
when the message is going to be discarded. This allows doing something other
than throwing the message away for good.
+ Sieve vnd.dovecot.environment extension: Added vnd.dovecot.config.*
environment items. These environment items map to sieve_env_* settings from
the plugin {} section in the configuration. Such values can of course also
be returned from userdb.
+ Sieve vacation extension: Use the Microsoft X-Auto-Response-Suppress header
to prevent unwanted responses from and to (older) Microsoft products.
+ ManageSieve: Added rawlog_dir setting to store ManageSieve traffic logs.
This replaces at least partially the rawlog plugin (mimics similar IMAP/POP3
change).
- doveadm sieve plugin: synchronization: Prevent setting file timestamps to
unix epoch time. This occurred when Dovecot passed the timestamp as
'unknown' during synchronization.
- Sieve exprograms plugin: Fixed spurious '+' sometimes returned at the end
of socket-based program output.
- imapsieve plugin: Fixed crash occurring in specific situations.
- Performed various fixes based on static analysis and Clang warnings.
v0.4.15 07-07-2016 Stephan Bosch <[email protected]>
* vacation extension: The sieve_user_email setting is now used in the check
for implicit delivery.
- imapsieve plugin: For any mail transaction, the mailbox was opened a second
time, even if no mailbox rule matched. This was unintentional, useless and
caused problems when the imapsieve plugin was used with other plugins like
acl.
- extprograms plugin: Significantly improved error handling. No stream errors
were logged.
- extprograms plugin: Fixed bug in handling of result code from remote program
(script service).
- extprograms plugin: Connection to remote program service was not retried.
- Several small fixes based on static analysis.
- Fixed handling of quoted string localparts in email addresses.
v0.4.14 26-04-2016 Stephan Bosch <[email protected]>
* The address test now allows specifying the X-Original-To header.
+ Implemented the Sieve imapsieve extension and its IMAP counterpart
(RFC 6785) as a set of plugins. This allows running Sieve scripts at IMAP
activity, rather than at delivery. There are also facilities for the
familiar sieve_before/sieve_after administrator scripts. A user script is
defined for a mailbox using an IMAP METADATA entry, whereas administrator
scripts are configured using mailbox matching rules defined in the plugin
settings.
+ Adjusted the Sieve ihave extension to allow capability tests to be performed
at runtime. This way, scripts can be written that work both at delivery and
from IMAP.
+ Implemented support for runtime trace debugging. This means that detailed
information about which commands, actions and tests are performed is written
to a file. That file is created in the configured directory, but only if
that directory exists. This way, a particular user can be easily singled out
for debugging. This works much like the Dovecot rawlog facility. The trace
output is identical to what is produced using sieve-test with its "-t"
command line option.
+ Added a "sieve_user_email" setting that configures the user's primary email
address. This is mainly useful to have a user email address available in
IMAP, where envelope data is unavailable.
+ Implemented the dovecot-specific "vnd.dovecot.report" extension. This allows
sending report messages in the Message Abuse Reporting Format (RFC 5965).
- extprograms plugin: Fixed epoll() panic caused by closing the output FD
before the output stream.
- Made sure that the local part of a mail address is encoded properly using
quoted string syntax when it is not a dot-atom.
v0.4.13 18-03-2016 Stephan Bosch <[email protected]>
* redirect action: Added the list-id header to the duplicate ID for mail loop
prevention. This means that the message sent directly to the user and the
message coming through the mailing list itself are treated as different
messages by the loop detection of the redirect command, even though their
Message-ID may be identical.
* Changed the Sieve number type to uint64_t, which means that Sieve numbers
can now technically range up to 2^64. Some other Sieve implementation
allowed this, making this change necessary for successful migration.
+ Implemented the sieve_implicit_extensions setting. The extensions listed in
this setting do not need to be enabled explicitly using the Sieve "require"
command. This behavior directly violates the standard, but can be necessary
for compatibility with some existing implementations of Sieve. Do not use
this setting unless you really need to!
- redirect action: Made mail loop detection more robust by forcibly adding a
Message-ID header if it is missing.
- Prevent logging a useless "script not found" error message for LDAP scripts
for which the entry exists but no attribute containing a script. This is not
necessarily an error.
- extprograms plugin: Changed the communication channel between parent and
child process for a directly forked program from a socketpair to a double
pipe. Linux does not support /dev/stdin, /dev/stdout and friends for
sockets. For some shell program authors this may be confusing, so that is
why it is changed. When using the script service, these device nodes are
still not usable though.
v0.4.12 06-02-2016 Stephan Bosch <[email protected]>
+ Implemented the Sieve extracttext extension (RFC 5703; Section 7). It is now
possible to extract body text from a message into a variable.
* Increased ABI version due to changes in the Sieve interpreter's object
definitions.
- multiscript: Fixed bug in handling of (implicit) keep; final keep action was
always executed as though there was a failure. This caused the keep action
to revert back to the initial message, causing editheader actions to be
ignored.
- managesieve-login: Fixed proxy to allow SASL mechanisms other than PLAIN.
Before, the proxy would fail if the server did not support the PLAIN
mechanism.
- ldap storage: Prevent segfault occurring when assigning certain (global)
configuration options.
v0.4.11 08-01-2016 Stephan Bosch <[email protected]>
- Sieve mime extension: Fixed the header :mime :anychild test to work properly
outside a foreverypart loop.
- Several fixes in message body part handling:
- Fixed assert failure occurring when text extraction is attempted on a
empty or broken text part.
- Fixed assert failure in handling of body parts that are converted to text.
- Fixed header unfolding for (mime) headers parsed from any mime part.
- Fixed trimming for (mime) headers parsed from any mime part.
- Fixed erroneous changes to the message part tree structure performed when
re-parsing the message.
- LDA Sieve plugin: Fixed logging of actions; sometimes the configured log
format was not followed.
- LDA Sieve plugin: Fixed bug in error handling of script storage
initialization.
- Sieve Extprograms plugin: Ignored ENOTCONN error in shutdown(fd, SHUT_WR)
call.
- Fixed duplication of discard actions in the script result. Each discard was
counted as a separate action, which means that action limit would be crossed
too early.
- Made sure that quota errors never get logged as errors in syslog.
- Fixed handling of implicit keep for a partially executed transaction that
yielded a temporary failure.
- Fixed handling of global errors. If master and user error handler were
identical, in some cases the log message could be lost.
- Fixed AIX compile issue in message body parser.
v0.4.10 13-12-2015 Stephan Bosch <[email protected]>
+ Implemented the Sieve mime and foreverypart extensions (RFC 5703). These
are fully implemented. The interaction with the editheader extension needs
some work, but this should not influence most uses; i.e., changes by the
editheader extension are not always visible using foreverypart/mime.
+ Sieve body extension: Properly implemented the `:text' body transform. It
now extracts text for HTML message parts.
+ Sieve enotify extension: mailto method: Implemented the
sieve_notify_mailto_envelope_from setting. This allows configuring the
source of the notification sender address for e-mail notifications. This is
similar to what already can be configured for redirect.
+ Added a sieve_enabled (defaults to 'yes') setting that allows explicitly
disabling Sieve processing for particular users. This used to be possible by
setting `sieve=', but ever since the sieve_before, sieve_after and
sieve_default settings were added, this method was not reliable anymore.
- variables extension: Fixed handling of empty string by the `:length' set
modifier. An empty string yielded an empty string rather than "0".
- Fixed memory leak in the Sieve script byte code dumping facility. Extension
contexts were never actually freed.
- Fixed handling of implicit keep when the last Sieve script is a global one.
In that case the implicit keep action was executed in global context, which
could mean that trivial (quota) errors ended up in the system log file,
rather than the user log file.
- doveadm sieve plugin: Fixed crashes caused by incorrect context allocation
in the sieve command implementations.
v0.4.9 04-10-2015 Stephan Bosch <[email protected]>
* Properly implemented checking of ABI version for Sieve interpreter plugins,
much like Dovecot itself does for plugins. This will prevent plugin ABI
mismatches.
+ Implemented a vnd.dovecot.environment extension. This builds upon the
standard environment extension and adds a few more environment items, such
as username and default mailbox. It also creates a variables namespace so
that environment items can be accessed directly. I am still thinking about
more environment items that can be added.
+ Sieve extprograms plugin: Made line endings of the input passed to the
external programs configurable. This can be configured separately for each
of the three extensions.
+ ManageSieve: Implemented proxy XCLIENT support. This allows the proxy to
pass client information to the back-end.
- ManageSieve: Fixed an assert failure occurring when a client disconnects
during the GETSCRIPT command.
- doveadm sieve plugin: Fixed incorrect initialization of mail user. This
caused a few memory leaks.
- sieve-filter command line tool: Fixed handling of failure-related implicit
keep when there is an explicit default destination folder. This caused
message duplication.
- lib-sieve: Fixed bug in RFC5322 header folding. Words longer than the
optimal line length caused empty lines in the output, which would break the
resulting message header. This surfaced in References: headers with very
long message IDs.
v0.4.8 15-05-2015 Stephan Bosch <[email protected]>
* LDA Sieve plugin: Dovecot changed the deliver_log_format setting to include
%{delivery_time}. This prompted changes in Pigeonhole that make this release
dependent on Dovecot v2.2.17.
+ Implemented magic to make sieve_default script visible from ManageSieve
under a configurable name. This way, users can see the default rules, edit
them and store a private adjusted version. This could also be achieved by
copying the default script into the user's script storage, but updates to
the global sieve_default script would be ignored that way.
+ ManageSieve: Implemented support for reporting command statistics at
disconnect. Statistics include the number of bytes and scripts uploaded/
downloaded/checked and the number of scripts deleted/renamed.
- Fixed problem in address test: erroneously decoded mime-encoded words in
address headers.
- extprograms plugin: Fixed failure occurring when connecting to script
service without the need to read back the output from the external program.
- Fixed bug in script storage path normalization occurring with relative
symbolic links below root.
- Fixed and updated various parts of the documentation
- ManageSieve: Used "managesieve" rather than "sieve" as login service name,
which means that all managesieve-specific settings where ignored.
- Managesieve: Storage quota was not always enforced properly for scripts
uploaded as quoted string. Nobody uses that, but it is allowed in the
specification and we support it, so it should work properly.
v0.4.7 19-03-2015 Stephan Bosch <[email protected]>
* editheader extension: Made protection against addition and deletion of
headers configurable separately. Also, the `Received' and `Auto-Submitted'
headers are no longer protected against addition by default.
* Turned message envelope address parse errors into warnings.
* The interpreter now accepts non-standard domain names, e.g. containing '_'.
+ Implemented the Sieve index extension (RFC 5260).
+ Implemented support for the mboxmetadata and servermetadata extensions
(RFC 5490).
+ Implemented new sieve commands for the doveadm command line utility. These
commands are currently limited to ManageSieve operations, but the other
current sieve tools will be migrated to doveadm in the near future as well.
+ Added more debug output about binary up-to-date checking.
+ Added script metadata to binary dump output.
- Fixed Sieve script binary up-to-date checking by normalizing the script
location.
- The Sieve interpreter now flushes the duplicate database during start phase
of result execution rather than commit phase. This makes sure locks on the
duplicate database are released as soon as possible, preventing contention.
- Performed a few optimizations in the lexical scanner of the language.
- Fixed bug in `:matches' match-type that made a pattern without
wildcards match as if there were a '*' at the beginning.
- Fixed crash in validation of the string parameter of the comparator tag.
- extprograms extension: Made sure supplemental group privileges are also
dropped. This was a problem reported by Debian lintian.
- Fixed bug in handling of binary errors for action side-effects and message
overrides.
- file script storage: Restructured storage initialization to address
backwards compatibility issues.
- dict script storage: Fixed small memory allocation bug.
v0.4.6 02-11-2014 Stephan Bosch <[email protected]>
- After make distclean the distributed tarball would fail to recompile.
This causes problems for some distribution builds.
v0.4.5 30-10-2014 Stephan Bosch <[email protected]>
+ Added a Pigeonhole version banner to doveconf output. This way, future
bug reports will also include Pigeonhole version information.
- Fixed handling of implicit keep. Last version erroneously reported that
implicit keep succeeded after an earlier failure, while it in fact had
failed. Particularly occurred for mailbox quota errors.
- Fixed segfault occurring on SunOS systems when there is no active script.
v0.4.4 28-10-2014 Stephan Bosch <[email protected]>
* Added support for Japanese mail addresses with dots at non-standard places
in localpart.
* Changed handling of ENOSPACE into a normal temporary failure and added
handling of ENOQUOTA as a user error.
* Restructured result execution, so that all actions which involve mail
storage are always committed before all others.
+ Implemented support for generic Sieve storages. Using alternative storages
now also possible for sieve_before/sieve_after.
+ Implemented storage driver for retrieving Sieve scripts from LDAP. This
currently cannot be used with ManageSieve.
+ Implemented sieve_redirect_envelope_from setting, which allows configuring
the envelope sender of redirected messages.
- Fixed handling of mail storage errors occurring while evaluating the input
message.
- managesieve-login:
- Removed bogus ALERT response code returned for AUTHENTICATE command.
- Fixed handling of invalid initial response argument to AUTHENTICATE
command.
- Fixed handling of stream errors in lexical scanner.
- Fixed handling of SMTP errors. Permanent and temporary errors were mixed up.
- Fixed several problems reported by CLang 3.4.
- duplicate extension: Fixed erroneous compile error about conflicting tags
when `:handle' argument was used last.
- relational extension: Fixed error handling of `:value' match.
- editheader extension: Fixed header unfolding and header iteration.
- mailbox extension: Fixed the `:create' tag, which erroneously subscribed an
existing folder.
- extprograms plugin: Fixed handling of error codes.
- doveadm-sieve plugin: Fixed several bugs. Synchronization of symbolic link
in the file storage should now also work properly.
v0.4.3 12-05-2014 Stephan Bosch <[email protected]>
* Editheader extension: Made control characters allowed for editheader, except
NUL. Before, this would cause a runtime error.
+ Upgraded Dovecot-specific Sieve "vnd.dovecot.duplicate" extension to match
the new draft "duplicate" extension.
- Fixed sieve_result_global_log_error to log only as i_info in administrator
log (syslog) if executed from multiscript context.
- Sieve redirect extension: Adjusted loop detection to show leniency to resent
messages.
- Sieve include extension: Fixed problem with handling of duplicate includes
with different parameters :once or :optional.
- Sieve spamtest/virustest extensions: Tests were erroneously performed
against the original message. When used together with extprograms filter to
add the spam headers, the changes were not being used by the spamtest and
virustest extensions.
- Deprecated Sieve notify extension: Fixed segfault problems in message string
substitution.
- ManageSieve: Fixed active link verification to handle redundant path slashes
correctly.
- Sieve vacation extension:
- Fixed interaction of sieve_vacation_dont_check_recipient with
sieve_vacation_send_from_recipient setting.
- Fixed log message for discarded response.
- Sieve extprograms plugin:
- Forgot to disable the alarm() timeouts set for script execution.
- Fixed fd leak and handling of output shutdown.
- Fixed 'Bad filedescriptor' error occurring when disconnecting script
client.
- Made sure that programs are never forked with root privileges.
v0.4.2 26-09-2013 Stephan Bosch <[email protected]>
* Incompatible change in Sieve doveadm plugin: the root attribute for
Sieve scripts is changed. Make sure that you update both sides of a dsync
setup simultaneously when Sieve is involved, otherwise synchronization will
likely fail.
+ Added support for sending Sieve vacation replies with an actual sender,
rather than the default <> sender. Check the updated
doc/extensions/vacation.txt for more information.
- Fixed a binary code read problem in the `set' command of the Sieve variables
extension. Using the set command with a modifier and an empty string value
would cause code corruption problems while running the script.
- Various fixes for doveadm-sieve plugin, mostly crashes. These include a fix
for the `Invalid value for default sieve attribute' problem.
- Various fixes for compiler and static analyzer warnings, e.g. as reported
by CLang and on 32 bit systems.
- Fixed the implementation of the new :options flag for the Sieve include
extension.
- Fixed potential segfault bug at deinitialization of the lda-sieve plugin.
- Fixed messed up hex output for sieve-dump tool.
v0.4.1 03-06-2013 Stephan Bosch <[email protected]>
+ Added support for handling temporary failures. These are passed back to
LDA/LTMP to produce an appropriate response towards the MTA.
- Sieve storage: Removed PATH_MAX limitation for active symlink. This caused
problems for GNU/Hurd.
- Fixed line endings in X-Sieve headers added by redirect command.
- ManageSieve: Fixed '[' ']' stupidity for response codes (only happened
before login).
- Fixed setting name in example-config/conf.d/20-managesieve.conf.
- Sieve extprograms plugin: Fixed interaction between pipe command and remote
script service. The output from the script service was never read, causing a
broken pipe error at the script service. Apparently, this was broken since
the I/O handling for extprograms was last revised.
- Fixed assertion failure due to datastack problem in message header
composition.
v0.4.0 09-05-2013 Stephan Bosch <[email protected]>
+ Added doveadm-sieve plugin that provides the possibility to synch Sieve
scripts using doveadm sync along with the user's mailboxes.
+ Added the Sieve extprograms plugin to the main Pigeonhole package. It is
still a plugin, but it is now included so that a separate compile is no
longer necessary and distributors are likely to include it. The extprograms
plugin provides Sieve language extensions that allows executing
(administrator-controlled) external programs for message delivery,
message filtering and string manipulation. Refer to
doc/plugins/sieve_extprograms.txt for more information.
+ Added debug message showing Pigeonhole version at initialization. Makes it
very clear that the plugin is properly loaded.
+ Finished implementation of the Sieve include extension. It should now
fully conform to RFC 6609. The main addition is the new :optional tag which
makes the include command ignore missing included scripts without an error.
+ Finished implementation of the Sieve environment extension as much as
possible. Environment items "location", "phase" and "domain" now also
return a usable value.
v0.3.6 26-09-2013 Stephan Bosch <[email protected]>
- Fixed a binary code read problem in the `set' command of the Sieve variables
extension. Using the set command with a modifier and an empty string value
would cause code corruption problems while running the script.
- Various fixes for compiler and static analyzer warnings, as reported
by CLang.
- ManageSieve: Fixed '[' ']' stupidity for response codes (only happened
before login).
- Fixed setting name in example-config/conf.d/20-managesieve.conf.
- Fixed messed up hex output for sieve-dump tool.
v0.3.5 09-05-2013 Stephan Bosch <[email protected]>
- Sieve editheader extension: fixed interaction with the Sieve body extension.
If used together, the deleteheader action could fail after a body test was
performed.
- Test suite: fixed a time zone dependency in the Sieve date extension tests.
v0.3.4 06-04-2013 Stephan Bosch <[email protected]>
* Changed error handling to be less of a nuisance for administrators. Strictly
user-caused errors are only reported in user log. Some errors are logged as
info instead.
* Sieve: Changed behavior of redirect in case of a duplicate message delivery
or a mail loop. If a duplicate is detected the implicit keep is canceled,
as though the redirect was successful. This prevents getting local
deliveries. The original SMTP recipient is used when it is available to
augment the entry in the LDA duplicate database. This way, duplicates are
only detected when (initially) addressed to the same recipient.
+ Sieve vnd.dovecot.duplicate extension: added new features to the duplicate
test, making it possible to manually compose the key value for duplicate
checking. This extension is in the process of being standardized
(https://tools.ietf.org/html/draft-bosch-sieve-duplicate-01).
+ Sieve date extension: generate warning when invalid date part is specified.
- Sieve editheader extension: fixed crash occurring when addheader :last was
used.
- Sieve include extension: fixed missing error cleanup that caused a resource
leak.
- Sieve vacation extension: fixed determination of From: address for when
sieve_vacation_dont_check_recipient is active.
- Sieve tools: the -D option wasn't enabled and documented for all tools.
- Siev dict script storage: fixed potential segfault occurring when dict
initialization fails.
- ManageSieve: fixed bug in skipping of CRLF at end of AUTHENTICATE command.
- ManageSieve: fixed handling of unkown commands pre-login.
- Fixed compile on Mageia Linux.
v0.3.3 18-09-2012 Stephan Bosch <[email protected]>
- Fixed compile against installed Dovecot headers. This was broken by the
ld.gold fix in the previous release.
v0.3.2 18-09-2012 Stephan Bosch <[email protected]>
+ sieve-refilter tool: improved man page documentation by explicitly
specifying the syntax used for mailbox arguments.
+ Sieve: spamtest and virustest extensions: improved trace debugging of score
calculation.
+ Sieve: made error messages about exceeding the maximum number of actions
more verbose.
- Sieve tools: fixed problems with running as root: sievec and sieve-dump now
ignore mail_uid and mail_gid settings when run as root.
- Sieve: fixed bug in action accounting (for limit checking): increase action
instance count only when an action is actually created.
- Sieve: include extension: fixed namespace separation of :global and
:personal scripts.
- ManageSieve: fixed segfault bug triggered by CHECKSCRIPT command.
- Fixed linking with ld.gold.
- Fixed several Clang compile warnings and a few potential bugs.
v0.3.1 25-05-2012 Stephan Bosch <[email protected]>
* Added support for retrieving Sieve scripts from dict lookup. This means that
Sieve scripts can now be downloaded from a database. Compiled script
binaries are still put on disk somewhere if used. The INSTALL documentation
is updated with information on this new feature and the
(backwards-compatible) changes to the configuration. Note that his feature
is currently not supported for sieve_before/sieve_after or script management
through ManageSieve.
+ Incorporated the sieve_duplicate plugin into main Pigeonhole tree as a
normal extension (vnd.dovecot.duplicate). This Dovecot-specific extension
adds the ability to check for duplicate deliveries based on message ID.
Specification can be found in: doc/rfc/spec-bosch-sieve-duplicate.txt
+ Added support for specifying multiple sieve_before and sieve_after paths.
This adds much more flexibility to the multiscript configuration. One
application is to have user-specific Sieve scripts outside the user's
normal control through ManageSieve.
+ Added a "session ID" string for managesieve connections, available in
%{session} variable (analogous to Dovecot change).
- Fixed several small issues, including a few potential segfault bugs, based
on static source code analysis.
- ManageSieve: changed use of EPROTO error to EIO in ManageSieve string stream
implementation because it is apparently not known in BSD.
- Gave stamp.h.in (needed for autotools) some content to prevent it from
disappearing in patch files.
- Fixed bug that caused a SunStudio CC compile failure (reported by Piotr
Tarnowski).
v0.3.0 16-02-2012 Stephan Bosch <[email protected]>
* Renamed sieve_global_path setting to sieve_default for clarity. Old name is
still recognized for backwards compatibility. Support for the ancient (pre
v1.1) name for this setting "global_script_path" is now dropped.
* Added means to prohibit use of redirect action. Setting sieve_max_redirects
to 0 now means that redirect is disallowed instead of unlimited. Default
value remains four.
* Fixed interaction of Sieve include extension with ManageSieve. It is updated
to match new requirements in the draft include specification. Missing
included scripts are no longer an error at upload time.
* Updated RFC2822 header field body verification to exclude non-printing
characters (RFC5322). Only Sieve actions that can create unstructured header
values (currently enotify/mailto and editheader) are affected by this
change.
+ Completed sieve-filter tool to a useful state. The sieve-filter tool
provides a means to (re)filter messages in a mailbox through a Sieve script.
+ Implemented the Sieve editheader extension. It is now possible to add and
remove message headers from within Sieve.
+ ManageSieve: added support for reading quoted and literal strings as a
stream. Fixes support for handing large SASL responses (analogous to similar
changes in Dovecot). It is now also allowed to use a quoted string for the
PUTSCRIPT script argument.
+ Added code to cleanup tmp directory in Sieve storage directory (sieve_dir)
every once in a while.
+ Added support for substituting the entire message during Sieve processing.
This is used for the filter action provided by the new sieve_extprograms
plugin (provided separately for now). The filter action allows passing the
message through an external program.
+ Added support for restricting certain Sieve language extensions to
(admin-controled) global scripts. Restricted extensions can be configured
using the new sieve_global_extensions setting. This is particularly useful
for some of the Dovecot-specific (plugin-based) Sieve extensions, that can
be somewhat hazardous when under direct control of users (e.g.
sieve_extprograms).
v0.2.6 13-02-2012 Stephan Bosch <[email protected]>
* This release fixes unintentional behavior of the include extension. Included
scriptnames with a name like "name.sieve" would implicitly map to a script
file called "name.sieve" and not "name.sieve.sieve". Keep in mind that the
.sieve file extension has no meaning from within the Sieve language. A Sieve
script is always stored with an appended .sieve file extension, also when
the name already ends with a .sieve suffix.
IMPORTANT: Some installations have relied on this unintentional feature, so
check your script includes for issues before upgrading.
* Matched changes regarding auth_verbose setting in Dovecot. This means that
this release will only compile against Dovecot v2.0.18.
- Fixed problem in ManageSieve that caused it to omit a WARNINGS response code
when the uploaded script compiled with warnings.
- Made sure that locations of Sieve error never report `line 0'.
- Fixed potential segfault occurring when interpreter initialization fails.
v0.2.5 19-11-2011 Stephan Bosch <[email protected]>
+ Sieve vacation extension: made discard message for implicit delivery more