484 lines
8.4 KiB
Plaintext
484 lines
8.4 KiB
Plaintext
.TH UPASFS 4
|
|
.SH NAME
|
|
upasfs \- mail file server
|
|
.SH SYNOPSIS
|
|
.B upas/fs
|
|
[
|
|
.B -DSbdfilnps
|
|
][
|
|
.B -c
|
|
.I cachtarg
|
|
][
|
|
.B -f
|
|
.I mailbox
|
|
][
|
|
.B -m
|
|
.I mntpoint
|
|
]
|
|
.SH DESCRIPTION
|
|
.PP
|
|
.I Fs
|
|
is a user level file system that caches mailboxes and presents them as a file
|
|
system.
|
|
A user normally starts
|
|
.I fs
|
|
in his/her profile after starting
|
|
.IR plumber (4)
|
|
and before starting
|
|
a window system, such as
|
|
.IR rio (1)
|
|
or
|
|
.IR acme (1).
|
|
The file system is used by
|
|
.IR nedmail (1),
|
|
.IR acme (1)'s
|
|
mail reader, and
|
|
.I imap4d
|
|
and
|
|
.I pop3
|
|
(both
|
|
.IR pop3 (8))
|
|
to parse messages.
|
|
.I Fs
|
|
also generates plumbing messages used by
|
|
.IR biff
|
|
and
|
|
.IR faces (1)
|
|
to provide mail announcements.
|
|
.PP
|
|
The mailbox itself becomes a directory under
|
|
.BR /mail/fs .
|
|
Each message in the mailbox becomes a numbered directory in the
|
|
mailbox directory, and each attachment becomes a numbered directory
|
|
in the message directory. Since an attachment may itself be a mail message,
|
|
this structure can recurse ad nauseam.
|
|
.PP
|
|
Each message and attachment directory contains the files:
|
|
.TP 1.4i
|
|
.B body
|
|
.PD 0
|
|
the message minus the RFC2822 style headers
|
|
.TP
|
|
.B cc
|
|
the address(es) from the CC: header
|
|
.TP
|
|
.B date
|
|
the date in the message, or if none, the time of delivery
|
|
.TP
|
|
.B digest
|
|
an SHA1 digest of the message contents
|
|
.TP
|
|
.B disposition
|
|
.B inline
|
|
or
|
|
.B file
|
|
.TP
|
|
.B filename
|
|
a name to use to file an attachment
|
|
.TP
|
|
.B flags
|
|
persistant message flags as per IMAP
|
|
.TP
|
|
.B ffrom
|
|
the parsed name of the sender
|
|
.TP
|
|
.B from
|
|
the from address in the From: header, or if none,
|
|
the address on the envelope.
|
|
.TP
|
|
.B header
|
|
the RFC822 headers
|
|
.TP
|
|
.B info
|
|
described below, essentially a summary of the header info
|
|
.TP
|
|
.B inreplyto
|
|
contents of the
|
|
.B in-reply-to:
|
|
header
|
|
.TP
|
|
.B lines
|
|
the number of lines in the message body
|
|
.TP
|
|
.B messageid
|
|
the parsed RFC2822 MessageID
|
|
.TP
|
|
.B mimeheader
|
|
the mime headers
|
|
.TP
|
|
.B raw
|
|
the undecoded MIME message
|
|
.TP
|
|
.B rawbody
|
|
the undecoded message body
|
|
.TP
|
|
.B rawheader
|
|
the undecoded message header
|
|
.TP
|
|
.B references
|
|
the parsed MessageIDs of each referenced message,
|
|
one per line
|
|
.TP
|
|
.B replyto
|
|
the address to send any replies to.
|
|
.TP
|
|
.B subject
|
|
the contents of the subject line
|
|
.TP
|
|
.B to
|
|
the address(es) from the To: line.
|
|
.TP
|
|
.B type
|
|
the MIME content type
|
|
.TP
|
|
.B unixheader
|
|
the envelope header from the mailbox
|
|
.TP
|
|
.B unixdate
|
|
the date portion of the Unix From line.
|
|
.TP
|
|
.B unixdatesec
|
|
the mdir filename for mdir messages. The portion
|
|
before the dot is always the date from the Unix From
|
|
line in seconds since epoch.
|
|
.PD
|
|
.PP
|
|
The
|
|
.B info
|
|
file contains the following information, one item per line. Lists
|
|
of addresses are single space separated.
|
|
.IP
|
|
.TP 2i
|
|
.I "sender address
|
|
.PD 0
|
|
.TP
|
|
.I "recipient addresses
|
|
.TP
|
|
.I "cc addresses
|
|
.TP
|
|
.I "reply address
|
|
.TP
|
|
.I "envelope date
|
|
.TP
|
|
.I "subject
|
|
.TP
|
|
.I "MIME content type
|
|
.TP
|
|
.I "MIME disposition
|
|
.TP
|
|
.I filename
|
|
.TP
|
|
.I "SHA1 digest
|
|
.TP
|
|
.I "bcc addresses
|
|
.TP
|
|
.I "in-reply-to: contents
|
|
.TP
|
|
.I "RFC822 date
|
|
.TP
|
|
.I "message senders
|
|
.TP
|
|
.I "message id
|
|
.TP
|
|
.I "number of lines in body
|
|
.TP
|
|
.I "size of message
|
|
.TP
|
|
.I "message flags
|
|
.TP
|
|
.I unixdatesec
|
|
.TP
|
|
.I name from From: header
|
|
.PD
|
|
.PP
|
|
Deleting message directories causes the message to be removed from
|
|
the mailbox.
|
|
.PP
|
|
The mailbox is scanned and the structure updated
|
|
whenever the mailbox changes. Message directories are
|
|
not renumbered. The results of the scan are
|
|
recorded in
|
|
.IR mailbox ".idx".
|
|
.PP
|
|
The file
|
|
.B /mail/fs/ctl
|
|
is used to direct
|
|
.I fs
|
|
to open, close, rename, create or remove new mailboxes,
|
|
and also to
|
|
delete or flag groups of messages atomically.
|
|
The messages that can be written to this file are:
|
|
.TP 2i
|
|
.PD 0
|
|
.B "open \fIpath mboxname\fP
|
|
opens a new mailbox.
|
|
.I path
|
|
is the file to open, and
|
|
.I mboxname
|
|
is the name that appears under
|
|
.BR /mail/fs .
|
|
.TP
|
|
.B "close \fImboxname\fP
|
|
close
|
|
.IR mboxname .
|
|
The close takes affect only after all files open under
|
|
.BI /mail/fs/ mboxname
|
|
have been closed.
|
|
.TP
|
|
.B "create \fImboxname\fP
|
|
create a new mailbox,
|
|
.BR mboxname .
|
|
The mailbox type must support creation.
|
|
.TP
|
|
.B "rename [-t] \fIold new\fP
|
|
rename the mailbox
|
|
.I old
|
|
to
|
|
.IR new .
|
|
The
|
|
.I t
|
|
flag truncates rather than removes the old
|
|
mailbox.
|
|
The renaming takes effect immedately. While mailboxes
|
|
of any type may be renamed, it is not possible to use
|
|
.B rename
|
|
to convert folder types.
|
|
.TP
|
|
.B "remove [-rt] \fImboxname\fP
|
|
remove
|
|
.BR mboxname .
|
|
The
|
|
.I r
|
|
flag removes any subfolders while
|
|
the
|
|
.I t
|
|
flag truncates, rather than removes.
|
|
.TP
|
|
.B "delete \fImboxname number ...\fP
|
|
Delete the messages with the given numbers from
|
|
.IR mboxname.
|
|
.TP
|
|
.B "flag \fImboxname flags number ...\fP
|
|
flag the given messages.
|
|
.PD
|
|
.PP
|
|
The
|
|
.B flags
|
|
file records persistant message flags. These
|
|
flags are a superset of the standard IMAP message
|
|
flags. Flags are stored in order. Unset flags
|
|
are represented by a
|
|
`-' while set flags are represented by the following
|
|
ordered characters
|
|
.TF "D
|
|
.TP
|
|
.B a
|
|
answered
|
|
.TP
|
|
.B D
|
|
deleted
|
|
.TP
|
|
.B d
|
|
draft
|
|
.TP
|
|
.B f
|
|
flagged
|
|
.TP
|
|
.B r
|
|
recent
|
|
.TP
|
|
.B s
|
|
seen
|
|
.TP
|
|
.B S
|
|
stored
|
|
.PD
|
|
.PP
|
|
Messages of the form
|
|
.BI "[+-]" flags
|
|
may be written to the
|
|
.B flags
|
|
file.
|
|
Fs maintains the
|
|
.I r
|
|
flag. Mail readers are expected
|
|
to maintain other flags.
|
|
.PP
|
|
The options are:
|
|
.TF "-c cachetarg
|
|
.TP
|
|
.B -D
|
|
Trace 9P protocol messages.
|
|
.TP
|
|
.B -S
|
|
Log to console in addition to the standard places.
|
|
.TP
|
|
.B -b
|
|
stands for biffing. Each time new mail
|
|
is received, a message is printed to standard
|
|
output containing the sender address, subject,
|
|
and number of bytes. It is intended for
|
|
people telnetting in who want mail announcements.
|
|
.TP
|
|
.B -c \fIcachetarg\fP
|
|
attempt to keep the cache below
|
|
.I cachetarg
|
|
bytes.
|
|
.TP
|
|
.B -d
|
|
loud debugging.
|
|
.TP
|
|
.B -f \fIfile\fP
|
|
use
|
|
.I file
|
|
as the mailbox instead of the default,
|
|
.BI /mail/box/ username /mbox.
|
|
.PD 0
|
|
.TP
|
|
.B -i
|
|
chatty index debugging.
|
|
.TP
|
|
.B -l
|
|
logging. Turn on logging via syslog
|
|
(and to the console with -\fIS\fP) to
|
|
the file
|
|
.BR /sys/log/fs .
|
|
.TP
|
|
.B -m \fImntpt\fP
|
|
mount on
|
|
.I mntpt
|
|
rather than the default
|
|
.BR /mail/fs .
|
|
.TP
|
|
.B -n
|
|
Don't open a mailbox initially. Overridden by -f.
|
|
.TP
|
|
.B -p
|
|
turn off plumbing. Unless this is specified,
|
|
.I fs
|
|
sends a message to the plumb port,
|
|
.BR seemail ,
|
|
from source
|
|
.B mailfs
|
|
for each message received or deleted.
|
|
The message contains the attributes
|
|
.IR sender = "<contents of from file>" ,
|
|
.IR filetype =mail,
|
|
.IR mailtype = "deleted or new" ,
|
|
and
|
|
.IR length = "<message length in bytes>" .
|
|
The contents of the message is the full path
|
|
name of the directory representing the message.
|
|
.TP
|
|
.B -s
|
|
causes
|
|
.I fs
|
|
to put itself in
|
|
.B /srv
|
|
with a name of the form
|
|
.BR /srv/upasfs.\fIuser\fP .
|
|
.PD
|
|
.PP
|
|
.I Fs
|
|
will exit once all references to its directory
|
|
have disappeared.
|
|
.PP
|
|
.I Fs
|
|
interprets mailbox file names of the form
|
|
.BI / proto / host / user
|
|
to mean access an account on
|
|
.I host
|
|
using the given protocol.
|
|
Authentication is delegated to
|
|
.IR factotum (4).
|
|
The final
|
|
.BI / user
|
|
may be omitted, in which case
|
|
the user name is gleaned from the key held by
|
|
.IR factotum .
|
|
The following protocols are supported:
|
|
.PP
|
|
.TF apoptls
|
|
.TP
|
|
.B pop
|
|
cleartext POP with password authentication
|
|
.TP
|
|
.B apop
|
|
cleartext POP with challenge-response (APOP) authentication
|
|
.TP
|
|
.B poptls
|
|
TLS-encrypted POP with password authentication
|
|
.TP
|
|
.B apoptls
|
|
TLS-encrypted POP with challenge-response (APOP) authentication
|
|
.TP
|
|
.B imap
|
|
cleartext IMAP with CRAM-MD5 or password authentication
|
|
.TP
|
|
.B imaps
|
|
TLS-encrypted IMAP CRAM-MD5 or password authentication
|
|
.PD
|
|
.PP
|
|
The two IMAP protocols allow an optional fourth field
|
|
specifying a mailbox name, for example
|
|
.BR /imap/server/user/stored .
|
|
.PP
|
|
.B Poptls
|
|
and
|
|
.B apoptls
|
|
connect to port 110 in plaintext and start TLS using the POP
|
|
STLS command.
|
|
.B Imaps
|
|
connects to port 993 and starts TLS before initiating the IMAP conversation.
|
|
There should probably be
|
|
.BR pops ,
|
|
.BR apops ,
|
|
and
|
|
.B imaptls
|
|
protocols as well.
|
|
.RB ( Pops
|
|
and
|
|
.B apops
|
|
would connect to port 995 and start TLS before initiating the POP conversation,
|
|
and
|
|
.B imaptls
|
|
would connect to port 143 in plaintext and start TLS using the IMAP
|
|
STARTTLS command.
|
|
(That's the nice thing about standards\(emthere's so many to choose from.))
|
|
.SH FILES
|
|
.TF /mail/box/*/dead.letter
|
|
.TP
|
|
.B /mail/box/*
|
|
mail directories
|
|
.TP
|
|
.B /mail/box/*/mbox
|
|
mailbox files
|
|
.TP
|
|
.B /mail/box/*/\fImbox\fP.idx
|
|
mailbox indicies
|
|
.TP
|
|
.B /mail/box/*/L.mbox
|
|
mutual exclusion lock for altering mbox (mbox format only)
|
|
.SH SOURCE
|
|
.TP
|
|
.B /sys/src/cmd/upas/fs
|
|
.SH "SEE ALSO"
|
|
.IR aliasmail (8),
|
|
.IR faces (1),
|
|
.IR filter (1),
|
|
.IR mail (1),
|
|
.IR marshal (1),
|
|
.IR mdir (6),
|
|
.IR mlmgr (1),
|
|
.IR nedmail (1),
|
|
.IR pop3 (8),
|
|
.IR qer (8),
|
|
.IR rewrite (6),
|
|
.IR send (8),
|
|
.IR upasfs (4),
|
|
.br
|
|
Erik Quanstrom
|
|
``Scaling Upas'',
|
|
Proceedings of IWP9,
|
|
October, 2008.
|