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GNU mailutils NEWS -- history of user-visible changes. 2008-03-02
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 
2008 Free Software Foundation, Inc.
See the end of file for copying conditions.

Please send mailutils bug reports to <bug-mailutils@gnu.org>.


Version 1.9.90:

* New configuration file format.

* Programs

** Debugging and online help

Each Mailutils utility understands two additional command line
options:

 --debug-level=LEVEL    Set Mailutils debugging level.
 --debug-line-info      Show source info with debugging messages.

(see also `** Global debugging and verbosity settings.', below)

The programs using configuration file facility also understand the
--config-help command line option.  This option prints on the standard
output the detailed description of configuration file statements that
affect the given program.

** URL parameters.

Additional mailbox URL parameters `type', `user' and `param' can
appear in any local URLs.

** MAIL and FOLDER environment variables.

These variables are consulted only if mail-spool directory is not
explicitely set either in the configuration files or in the command
line. This is different from the previous versions.

** New utility `maidag'

Maidag is a MAIl Delivery AGent. It is a general-purpose MDA able to
run in both traditional and LMTP mode and to deliver mails to various
mailbox formats.  These formats, among others, include remote+smtp and
remote+sendmail (see `New mailbox types.', below), which are
equivalent to forwarding a message over SMTP.  Thus, maidag supercedes
both `mail.local' and `mail.remote' (which are still included for
backward compatibility).  Maidag is also able to process incoming 
messages using Sieve or Scheme scripts and, based on results of this
processing, to take a decision on whether to actually deliver and
where to deliver them.

** Comsat

The `comsat' utility is able to notify about messages delivered to
a mailbox of any `local' type, i.e.: UNIX mailbox, MH and Maildir.
This is implemented using quick access mode.  See `Quick access to a
message', below.

The communication protocol has been modified to make this possible.
The traditional comsat protocol is supported as well.

** New Sieve action `pipe'

Syntax: pipe [:envelope] <command line: string> 

This action executes the given <command line> and pipes the message to
its standard input. If the :envelope tag is given, the envelope of the
message is piped as well.

** Client SMTP STARTTLS support

** Support for new protocols: POPS (pops://) and IMAPS (imaps://),

** LDAP support (authentication and authorization).

** Support for TCP wrappers.

The support for TCP wrappers is added to the daemon programs (imap4d,
pop3d, maidag). The support is controlled at compile time by the
--with-tcpwrappers command line options to configure. By default, it
is enabled if libwrap presence is detected. A set of configuration
file statements are provided for fine tuning TCP wrappers at run-time.

** pop3d and imap4d ports.

Pop3d and imap4d can be configured to listen on several different
IP addresses/ports (or even local sockets) simultaneously.

** pop3d: Fixed APOP handling.

** imap4d supports PREAUTH mode.

Three mechanisms are provided for authentifying the connection in
PREAUTH mode:

 1. stdio - PREAUTH mode is enabled automatically if imap4d is started
    from command line in interactive mode (-i command line
    option). The current login name is used as the user name.

 2. ident - The remote machine is asked about the requester identity
    using the identification protocol (RFC 1413). Both plaintext and
    DES encrypted replies are understood.

 3. prog - Imap4d invokes an external program to authenticate the
    connection. The command line is obtained from the supplied string,
    by expandind the following variables:

      1) ${client_address} - Remote IP address in dotted-quad notation;
      2) ${client_port}    - Remote port number;
      3) ${server_address} - Local IP address;
      4) ${server_port}    - Local port number.

    If the connection is authenticated, the program should print the
    user name, followed by a newline character, on its standard
    output and exit with code 0.

    Otherwise, it shoud exit with a non-zero exit code.
    
* Libraries

** Diagnostic and debugging functions essentially rewritten.

A set of debugging macros, MU_DEBUG0 through MU_DEBUG11, is provided.
New functions mu_debug_printf and mu_debug_vprintf allow for flexible
formatting of debugging messages. The mu_debug_t object features
built-in line bufferring.

The new function mu_debug_check_level(d,l) returns true if the logging
level currently set for debugging object `d' matches that given by
`l'.

New diagnostics functions are available, among them:

  void mu_diag_vprintf (int level, const char *fmt, va_list ap);
  void mu_diag_printf (int level, const char *fmt, ...);
  void mu_diag_voutput (int level, const char *fmt, va_list ap);
  void mu_diag_output (int level, const char *fmt, ...);

A new header file, mailutils/diag.h, declarations of these and other
related functions.
  
See documentation (FIXME: Chapter?) for more information.

The functions mu_error and mu_verror are shortcuts for
mu_diag_output (MU_DIAG_ERROR, ...)  and mu_diag_voutput (MU_DIAG_ERROR, ...),
correspondingly.

The function mu_error_set_print is deprecated as well as the
mu_error_pfn_t type. They are, however, still supported. The following
approach is recommended to use instead of mu_error_set_print:

      mu_diag_get_debug (&debug);
      mu_debug_set_print (debug, new_printer, NULL);

** Header iteration

New function `mu_header_get_iterator' returns an iterator for this
header object. Thus, the following code loops over all headers:

      mu_iterator_t itr;
      mu_header_get_iterator (header, &itr);
      for (mu_iterator_first (itr); !mu_iterator_is_done (itr);
	   mu_iterator_next (itr))
	{
	  const char *hdr, *val;
	  mu_iterator_current_kv (itr,
				  (const void**)&hdr,
				  (void**)&val));
	  /* Do something with hdr and val */			  
	}
      mu_iterator_destroy (&itr);

** Global debugging and verbosity settings.

These settings provide default values for mu_debug_t objects created
by various library objects. The following functions are provided for
dealing with global debugging level:

   unsigned mu_global_debug_level (const char *object_name);
   int mu_global_debug_set_level (const char *object_name, unsigned level);
   int mu_global_debug_clear_level (const char *object_name);

** New function mu_mailbox_sync

It supercedes mu_mailbox_save_attributes, which is now considered
deprecated.

** Observable event handling

Each event type is associated with an event-specific data
pointer. This pointer is passed to event handling functions along with
an opaque function-specific data pointer. This affects the following
functions:

  mu_observer_set_action
  mu_observer_set_action_data (New function)
  mu_observable_notify

New type of event, MU_EVT_MESSAGE_APPEND, is signalled whenever a new
message is appended to the mailbox.

** Quick access to a message

A set of functions are provided for so-called `quick access' to mail
messages.

Quick access is used when an application needs to quickly read one
message from the mailbox. In particular, this mode is used by comsat.

To use quick access functions, the mailbox must be opened with flags
MU_STREAM_READ|MU_STREAM_QACCESS.  The function
mu_mailbox_quick_get_message can then be used to retrieve the message:

   int mu_mailbox_quick_get_message (mu_mailbox_t mbox,
 				    mu_message_qid_t qid,
 				    mu_message_t *pmsg);	

The message is identified by the second argument, qid.

The function mu_message_get_qid can be used to retrieve
mu_message_qid_t identifier for a message:

   int mu_message_get_qid (mu_message_t msg, mu_message_qid_t *pqid);

** New `aget' and `sget' accessors for mu_url_t

The following new accessors are provided:

extern int mu_url_sget_scheme  (const mu_url_t, const char **);
extern int mu_url_aget_scheme  (const mu_url_t, char **);  
  
extern int mu_url_sget_user  (const mu_url_t, const char **);
extern int mu_url_aget_user  (const mu_url_t, char **);  

extern int mu_url_sget_passwd  (const mu_url_t, const char **);
extern int mu_url_aget_passwd  (const mu_url_t, char **);  
  
extern int mu_url_sget_auth  (const mu_url_t, const char **);
extern int mu_url_aget_auth  (const mu_url_t, char **);  

extern int mu_url_sget_host  (const mu_url_t, const char **);
extern int mu_url_aget_host  (const mu_url_t, char **);  
  
extern int mu_url_sget_path  (const mu_url_t, const char **);
extern int mu_url_aget_path  (const mu_url_t, char **);  

extern int mu_url_sget_query  (const mu_url_t, const char **);
extern int mu_url_aget_query  (const mu_url_t, char **);  

int mu_url_sget_fvpairs (const mu_url_t, size_t *, char ***);
int mu_url_aget_fvpairs (const mu_url_t, size_t *, char ***);

** ACL

A set of functions implements general-purpose access control lists.
They are declared in the header file mailutils/acl.h.  Currently,
these functions support IPv4 and UNIX address families.  Support for
more address families, in particular IPv6, will be added in future.
The following actions can be defined in ACLs:

 1. mu_acl_accept       - Accept connection.
 2. mu_acl_deny         - Deny connection.
 3. mu_acl_log          - Issue a log message, using mu_diag.*
                          diagnostics functions.
 4. mu_acl_exec         - Execute an external program. 
 5. mu_acl_ifexec       - Execute an external program and accept or
                          deny connection depending on its exit code.

** KWD

A set of functions is provided for translating string values to
integer tokens and vice-versa using simple translation tables.
These functions are declared in the header file mailutils/kwd.h.

** Vartab

A set of functions is provided for performing variable expansion in
strings. These functions are declared in the header file
mailutils/vartab.h. 
	  
** Incompatible change in mu_url_get_.* return value

Any mu_url_get_.* accessors return MU_ERR_ENOENT if the corresponding
field is not present in the object. Previous versions in that case
returned 0 and stored empty string in the output buffer.

** New mailbox types.

Two new mailbox types, "remote+smtp" and "remote+sendmail", are
supported. These are `append-only' mailboxes, i.e. the only operation
that can be done over them is mu_mailbox_append_message.  E.g.,
appending to the URL `remote+smtp://127.0.0.1:24' is equivalent to
sending a message using mailer `smtp://127.0.0.1:24'.

** New argcv functions.

-  int mu_argcv_get_np (const char *command, int len,
  		        const char *delim, const char *cmnt,
		        int flags,
 		        int *pargc, char ***pargv, char **endp);

This function is an alternative entry point to
mu_argcv_get/mu_argcv_get_n functions. The resulting argv will contain
non-whitespace delimiters only if flags contains the bit
MU_ARGCV_RETURN_DELIMS.

-  void mu_argcv_remove (int *pargc, char ***pargv,
		         int (*sel) (const char *, void *), void *);

Removes from pargc/pargv all elements for which the sel function
returns true.
			 
** New registry functions.

- int mu_registrar_lookup_url (mu_url_t url, int flags,
			       mu_record_t *precord, int *pflags);
			     
** Fixed parsing of URLs similar to file:///a/b. 

It is parsed as an absolute file name `/a/b'.

Previous versions incorrectly understood such an URL as `a/b'
(relative file name). 

** Remove v0.6 compatibility layer.

** Function mu_mail_directory is removed.

** New function mu_mailbox_url.


Version 1.2:

* GPLv3

The programs in this release are licensed under the GNU General Public License
version 3.  The libraries are covered by the GNU Lesser General Public License
version 3.

* `libmailbox' library

** mu_stream_wait and mu_fd_wait allow to wait for exceptional conditions.

** maildir and mh repositories are created if MU_STREAM_CREAT flag is supplied.

** Fix coredump in argcv, which was triggered by input line consisting of
a single double-quote character.

** Fix inconsistency in decoding MIME messages: the CRLF preceding the
encapsulation line is conceptually attached to the boundary, as
requested by RFC 1521.

** Three kinds of accessors.

Each MU object has now three kind of accessors.  The `sget' accessor
returns a pointer to the immutable memory allocated inside the object
and holding its string representation.  The `aget' accessor allocates
new memory chunk, copies there the string representation of the object
and returns the pointer to the allocated memory.  Finally, the `get'
accessor copies the string representation to the character buffer
supplied by the caller.  For example:

  const char *s;
  mu_header_sget_value (hdr, "From", &s);

  char *s
  mu_header_aget_value (hdr, "From", &s);
  [...]
  free (s);

  char buf[SIZE];
  size_t size;
  mu_header_get_value (hdr, "From", buf, sizeof buf, &size);

** RFC2822 Headers.

The RFC 2822 headers support has been rewritten from scratch.  The
accessor functions are able to return a given header instance in case
of multiple headers, something which was impossible in the earlier
Mailutils releases.  These new functions are given identifiers, ending
with `_n', for example:

   int mu_header_sget_value_n (mu_header_t header,
                               const char *name, int n, const char **retval);

The `n' argument gives the ordinal number (1-based) of the header to return.
For example, to get the topmost 'Recieved' header:

   mu_header_sget_value_n (header, "Received", 1, &str);

To count headers from the bottom up, pass negative value of `n',
e.g. to get the last 'Recieved' header:

   mu_header_sget_value_n (header, "Received", -1, &str);

For backward compatibility, traditional header accessors are still
provided, being implemented as macros that expand to the
corresponding `_n' style accessors.   
			              
Important note: `mu_header_aget_value' does not allocate any memory
if the requested header was not found. This differs from its behavior
in previous releases, where it used to return a pointer to an empty
string ("") in that case. 

New functions are provided for adding and replacing headers:

- int mu_header_prepend (mu_header_t header, const char *name, const char *val)

Prepends header `name: val' to the existing headers;

- int mu_header_append (mu_header_t header, const char *name, const char *val)

Appends header `name: val' to the existing headers

- int mu_header_insert (mu_header_t header, const char *name, const char *val, 
  		        const char *ref, int num, int flags)

Inserts header `name: val'. The insertion position is determined by
the last three arguments: 

  -- If flags is MU_HEADER_REPLACE and the header with the same name
     exists, it is replaced by the new header. Otherwise:
  -- If ref == NULL, the header is added before the existing ones;
  -- If ref is not NULL, the new header is inserted after `num'th
     occurrence of the header named `ref'.  If flags is
     MU_HEADER_BEFORE, it is inserted before that occurrence.
     
** New functions `mu_address_set_local_part', `mu_address_set_domain',
`mu_address_set_route', `mu_address_set_email'

* The `mail.local' utility

The program can be run by a non-privileged user.  Thus, it can be used with
`fetchmail' and similar utilities.

Any changes to message headers done by Sieve filters are reflected in
the delivered message.

* The `mail' utility:

Fix bugs in `pipe' command: the cmd variable setting
and single-argument invocation were handled incorrectly

Fix coredump in `send' command.

** Empty messages 

The handling of empty messages by the `mail' utility is controlled by the
bollean variable `nullbody'.  If it is set (the default), the message
is sent and the warning ``Null message body; hope that's ok'' is
issued. This is compatible with other mail implementations. The exact
message displayed in this case is set by `nullbodymsg' variable.

If `nullbody' is unset, the message is silently ignored. This is
useful, in particular, in crontab files.

* The `readmsg' utility.

Improve compatibility with elm's implementation.  In particular -w
'From_' will now output `From ' markers.  If the underlying mailbox
format does not contain those, `readmsg' will try to construct them
from the available data.

* The `pop3d' utility.

New options `--bulletin-db' and `--bulletin-source' implement bulletin
facility.

* MH changes

** sortm uses stable sort algorithm.
** send supports `--split'. The new option `--chunksize' allows to
set size of chunks to split the message into. The default size is
48032 (632 lines, each of 76 bytes).


* Support for old DBM has been withdrawn.


Version 1.1:

* mail: Implement ^ and $ commands

* Add support for Berkeley DB 3 and 4

* comsat

The syntax of echo command changed. Now it is more shell-like:

echo
echo New mail for \a$u@$h:
echo ---
echo From: $H{From}
echo Subject: $H{Subject}
echo $B(,5)---

** Bug fixes
* Fix build without Guile
* mail core dumped on tab expansion of `cd x'
* Print "-- \n" before ~a expansion in mail
* Fix memory problems in mail's `decode' command
* Fix endless loop in libsieve that was triggered by using a tag without the
arguments it requires.
* Fix unfolding


Version 1.0:

Official release.  This is the first stable release since 0.6.  For a
complete list of changes, please see the entries below.


Version 0.6.95:

* New functions:
** Two new functions (mu_tcp_stream_create_with_source_ip and
mu_tcp_stream_create_with_source_host) allow to create TCP connections
from the given source address. 

* Bugfixes:
** Fix handling of Fcc headers in mailers
** Fix several inconsistencies in `mh/folder' to make it compatible with
RAND and nmh implementations.  In particular, `folder -all +name'
(`folders +name') is now working as expected.
** MH programs create directory hierarchies if requested to.
** `mail' correctly handles empty mailboxes (it used to display garbage in
place of the message count).
** Fix RFC 2047 filters: do not stop translating until the buffer is drained.
** Fix option handling in guimb: remove leftover optind usage.


Version 0.6.94:

* Add support for Berkeley DB 3.x and 4.x
See the description of --with-berkeley-db option in the README file.

* Add support for Guile 1.8.x

* The module mailutils.scm is now defined as (mailutils mailutils). Please
change your (use-modules) statements accordingly.

* Scheme modules can now be installed in the site-wide Guile directory.
See the description of --with-guiledir option in the README file.

* Bugfixes:
** Fix handling of file names containing whitespace characters in imap4 server
and library.
** frm: Fix coredump on empty From headers.
** folder: If a +folder is given along with the -all switch, folder will, in
addition to setting the current folder, list the top-level subfolders
for the current folder (with -norecurse) or list all sub-folders under
the current folder recursively (with -recurse). This behavior is
compatible with nmh and rand implementations.
** rmf: Fix coredump when invoked without arguments.
** send: rename draft file after sending it.
** All mh utilities: create nested directories, if required.
** Correctly handle comma-delimited folder lists in Fcc headers.
** A decoder stream correctly handles unfinished input strings.


Version 0.6.93:

* The library namespace is optimized. Now all global identifiers begin 
with mu_.
NOTE: This is incompatible change.

Programs using old API can still be compiled, using one of the
following approaches. If the program includes <mailutils/mailutils.h>,
define the symbol MU_COMPAT before including it (or invoke cc with
-DMU_COMPAT option). Otherwise, include file <mailutils/compat.h>.

* Main library is renamed to libmailutils
NOTE: This is incompatible change, unless you use mailutils-config to
obtain loader options (which is recommended, anyway).

* Use of '~' character (denoting the user home directory)

This character is expanded also if it appears after the protocol
specification in a mailbox URL. e.g.: maildir:~/Mail/inbox.

It is possible to use '~' in mailutils configuration file.

* New option --mailbox-type

Use this option to specify the default mailbox type. It is supported
by all utilities that use "mailbox" command line capability (see the
documentation for the list). For example:

  mail --mailbox-type=mh: --file=~/Mail/inbox

will open ~/Mail/inbox directory as an MH folder. This option is
especially useful in the mailutils configuration file. For example,
adding this line to your mailutils.rc:

:mailbox  --mailbox-type=mh:

will force all mail utilities to use MH by default.

* mail: New option --exec (-E) allows to execute arbitrary mail commands
before opening the mailbox. Any number of --exec options can be given.

** New variables `recursivealiases' and `inplacealiases' control the way
mail aliases are expanded. When `recursivealiases' is set, aliases
will be expanded recursively. When `inplacealiases' is set, alias
expansion takes place before entering compose mode (by default, it is
carried out when exiting compose mode, right before sending the
message). The default is `set recursivealiases noinplacealiases'.

* imap4d: New option --create-home-dir: If a user logs in and his home
directory does not exist, create it.

* Changes in MH

** Context file handling

Comments and empty lines are allowed in any MH context file
(.mh_profile, .mtstailor etc.)

Comment is any line whose first non-whitespace character is
'#'. Notice that '#' looses its special meaning when used as a part of
the keyword or a value. 

** send

Add support for localname and localdomain mtstailor variables.

New mtstailor variable x-mailer controls whether to add the 'X-Mailer'
header to the message being sent, if it does not contain one. The
value 'yes' means to add the default X-Mailer string, the value
'no' means to ignore it. Any other value is taken as the X-Mailer
identifier to be added to the message.

** mhn

In compose mode mhn analyzes Subject: line and, if it contains any
non-printable characters, encodes it in accordance with RFC
2047. Encoding type and charset are taken from the first message
part. They also can be specified in the subject itself using the
following syntax:

 #<encoding=ENC; charset=CSET>CONTENT

* Bugfixes:
** mail: Fix handling of conditional expressions
** mail: When several recipients were specified, no alias expansion took
place. 
** movemail: did not preserve input mailbox if an I/O error happened on the
output one. Debian Bug#344420.
** Fix handling of Alternate-Mailboxes in MH


Version 0.6.91:

* libsieve: New action 'vacation'

* imap4d: Implemented SASL authentication using LOGIN and PLAIN mechanisms.

* Plaintext passwords for SASL authentication types can be kept in SQL
database. When used with LOGIN or PLAIN, the passwords may be
encrypted using MySQL password() function. New option
--sql-password-type specifies what kind of password is returned by
--sql-getpass query. Its possible values are: `plain' for plaintext
passwords, `scrambled' for passwords hashed using MySQL algorithm and
`hash' for MD5 or DES hashed passwords (default).

* mail

** Improved output of the commands `headers' and `z'

** Improved POSIX compatibility.
In particular, `next' command now works as described by
POSIX. Following commands change the status of the message to `read':
mbox, pipe, print, top, undelete, visual and decode (a GNU extension).
Implemented following variables: flipr, showto, bang.
The command `touch' does not alter messages that were deleted or saved
to a file.

** The `decode' command uses `mailcap' extension to display
parts of MIME multy-part messages. By default the built-in mailcap
engine is used. Normally `mail' asks for confirmation before running
an interpreter to display a message part, unless the type of the part
is listed in `mimenoask' mail variable.

If `metamail' variable is set, it specifies the external program
to be used instead of the built-in engine. Thus, settting

      set metamail="metamail -m mail -p"

in your ~/.mailrc enables use of the standard `metamail' program
by `decode'.

Before calling `metamail', the environment variable METAMAIL_PAGER
is set to the value of the variable PAGER. If `mimenoask' mail
variable is set, its value is passed to `metamail' via MM_NOASK
environment variable.

Unsetting `metamail' variable turns off special interpretation
of MIME parts.

* from
The `from' utility was rewritten. It is now fully compatible with the
BSD version.

* frm
Implemented -t (--align) command line option.
Whenever available, `frm' uses BIDI algorithm for display. This
allows for correct display of subject lines written in languages
with right to left script orientation (Arabic, Hebrew).

* Maildir support
Implemented removal of messages.

* New SQL driver: odbc

* New authentication method: radius

* Ukrainian localization

* Bugfixes

** Fixed possible mailbox corruption in imap4d
** imap4d subscribe/unsubscribe was not working
** Fixed displaying mail headers in different languages (mail,frm,from)
** SQL authentication: prevent sql inje