asmail - Online in the Cloud

PROGRAM:

NAME

asmail - the AfterStep e-mail monitor

SYNOPSIS

asmail [-h] [-V] [-v] [-nox]
[-insecure]
[-noconfig]
[-f resource file]
[-geometry X geometry specification]
[-iconic]
[-withdrawn]

DESCRIPTION

The asmail is a X11 application that acts as an e-mail monitor for a number of various
format mailboxes. The asmail provides a distinctive Afterstep window manager look and
feel and features multiple options to allow the customization.

Basically, the tool shows you the following:

- The background image changes depending on whether
there is e-mail in your mailboxes or not.
Custom images may be loaded and used for animation
sequences.

- The tool will display the number of e-mails waiting
in each mailbox and/or the total numbers for all
mailboxes together.

- For each mailbox, there is a status indicator that
shows whether the update is running at this moment
and indicates if there is an error. The same indicator
shows up next to the summary line.

The folowing indicators are used for the status display:

R An update on the mailbox is running at this moment.
For small mailboxes with fast access, you may never
actually see it - so fast it disappears.

L An error occured that has to do with the login
procedure. Most probably, your name/password
combination was not accepted by the server.

C A connection problem. asmail could not
connect to the server for some reason. The reasons
may be many - server down, network unreachable,
service not available and so on.

T A time-out has occured while asmail was
waiting for the server's answer. If you have a
frequent problem with this but the server seems
to be available in other applicaitons, try
increasing the "timeout" setting for the mailbox.

F This is an indicator of a general error condition.
Something is wrong, maybe the configuration is not
correct, or the mailbox is not readable. Check the
output of asmail by running from the terminal -
this should give you an idea of what is wrong.

The resource files may be specified with a command line option. The logic of asmail is
simple: first it parses the resource file that you specified on the command line. If you
do not specify the resource file on the command line, asmail will look in the default
location (~/.asmailrc). If it exists, asmail will parse that one. If no configuration
file was given on the command line and there is no configuration file in the default
location, asmail will attempt to monitor the mailbox specified by the $MAILBOX environment
variable.

How asmail distinguishes between old and new mail.

The UNIX mailbox format does not contain any indication on the outside. The mailbox must
be parsed to check if some e-mail is new. Parsing the mailbox is an expensive operation,
especially if the mailbox is large. asmail checks the mailbox file modification time with
the stat(2) system call. When the file modification time changes, the mailbox is parsed.
The lines "From " are counted and taken to be the number of e-mails in the box. After each
"From " line, asmail looks for the "Status:" header. This header contains flags when the
message was seen and read. Messages without this header line (or with an empty header) are
considered to be new.

The Maildir format is very well-behaved. There are separate folders for old and new e-
mails so we just count the number of files in "cur" and "new" subdirectories. The "tmp"
subdirectory is ignored since this is the temporary storage and is not supposed to be
taken into account.

The mH format is somewhere between Maildir and the UNIX mailbox formats. It is used by mh,
nmh, balsa and xfmail among others. The messages are all stored in separate files, one
message per file, and all of the messages in a single directory. Each message file is
named with an increasing number, so the first message recieved in the mailbox is stored as
"1" and the 39th message is stored as "39". There are two ways that the status of the
messages are kept track of. Traditionally, the mH tools used a file called
".mh_sequences", which is stored in the mH directory, to keep track of status. This file
contains a series of sequences, each one starting with a token followed by a colon and
then by a series of message numebrs, representing the messages that belong to that
sequence. It looks something like this:
unseen: 1 2 3-5 19 25-31
Although there are many sequences, some standard and some user-defined, if the use-mh-
sequences configuration option is set to "yes" for that mailbox, then asmail will parse
this file, looking for the "unseen" sequence to determine how many messages are new. Some
mail clients don't use the .mh_sequences file and instead treat the files in the mH
mailbox just like a collection of seperate messages from a UNIX mailbox. So, if the use-
mh-sequences configuration option is set to "no", or is not specified at all, then asmail
will parse all of the files in the mH directory, searching for the Status header.
Therefore, this mode is definitely the most "processor hungry" format from the point of
view of asmail. mh, nmh, and newer versions of balsa utilize the .mh_sequences file,
while older versions of balsa and xfmail do not. It is not known how other clients treat
mH mailboxes.

The POP3 protocol does not support the notion of new or old e-mail. Your e-mail client
keeps a list of messages and can tell whether you read one of them or not. Since asmail
does not keep a list of messages there is no way to tell a new message from the old one.
Ok, so what we do is assume that all e-mail is new at start-up. This is a logical
assumption for most of the people because they store the e-mail locally and remove it from
the server. Others are out of luck. Now, when the number of messages decreases, we assume
that you read all your e-mail and deleted some, so all messages are marked as old. When
the number of messages increases, we assume that the new mail arrived and we report the
additional mail as new.

The IMAP protocol is very well behaved, it reports the number of new e-mails and the
number of old e-mails if you ask politely :) Since we open the mailbox in read-only mode,
we do not cause any status changes for the mailbox on the server. The IMAP server will
store a special e-mail into your mailbox if it is in UNIX format. This e-mail allows the
server to keep track of the new and old e-mails. The server will not report this e-mail
into the number of e-mails, so that if you check your UNIX mailbox directly the number of
messages will be one more.

CONFIGURATION OPTIONS

-h
prints a short description and usage message.

-V
Version control. Prints out the version of the program.

-v
Verbose mode. In this mode, asmail will print the information about mailboxes onto
the controlling terminal. The information includes: number of updates requested,
per mailbox: thread PID, [R]unning or idle, any errors are signalled with leters
(see above) and the number of e-mails in the format new/old. This mode is useful
for debugging or could be used to monitor mailboxes without X Windows interface
(give the -nox option).

-f resource file
Specifies the alternative location for the resource file. The default location is
~/.asmailrc If the alternative file is specified, the default location is ignored.

-geometry X geometry specification
Specifies the size and position of the application on the screen in the standard
X11 format (see XParseGeometry (3x) for details):

[=][<width>{xX}<height>][{+-}<xoffset>{+-}<yoffset>]

-noconfig
Forces asmail to ignore the resource file even if one is present. asmail will run
with all default settings and check the Unix mailbox specified by the $MAIL
environment variable.

-nox
Starts the asmail application in the terminal-only mode. The X Windows interface is
not started. The configuration file is still parsed as usual though.

This option implies -v option.

-insecure
Usually, asmail will check that the resource file has the 600 mode, that is there
are no access rights for "group" and "others". If such access rights are granted,
asmail will complain and exit. This is done to make you remember the passwords you
put into the resource file. If there are no passwords stored in the file (e.g. you
are using UNIX mailbox on the local machine) the check is not applied.

This option forces asmail to continue operation even if the resource file has
insecure permissions and passwords are stored in that file.

-iconic
This option will cause asmail to start up as an icon rather than as a normal
window. The application can still be de-iconized and iconized as usual.

-withdrawn
This option will cause asmail to start up in a so-called "withdrawn" mode. This
mode is used by WindowMaker window manager to dock the application into their
version of the Wharf.

RESOURCE FILE SYNTAX

The syntax of the resource file is described in a separate man page under asmailrc (5).

INVOCATION

asmail can be called in different ways. The most common invocation is the command line:

user@host[1]% asmail &

Another way to call asmail is from the window manager:

*Wharf "asmail" nil Swallow "asmail" /usr/local/bin/asmail &

This line, when placed in the wharf file in the users Afterstep configuration directory
will cause asmail to become a button on the Wharf (1) button bar under the afterstep (1)
window manager.

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