'\"
'\" Generated from file 'pop3d_udb\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2002 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>
'\"
.TH "pop3d::udb" n 1\&.0\&.1 tcllib "Tcl POP3 Server Package"
.\" The -*- nroff -*- definitions below are for supplemental macros used
.\" in Tcl/Tk manual entries.
.\"
.\" .AP type name in/out ?indent?
.\"	Start paragraph describing an argument to a library procedure.
.\"	type is type of argument (int, etc.), in/out is either "in", "out",
.\"	or "in/out" to describe whether procedure reads or modifies arg,
.\"	and indent is equivalent to second arg of .IP (shouldn't ever be
.\"	needed;  use .AS below instead)
.\"
.\" .AS ?type? ?name?
.\"	Give maximum sizes of arguments for setting tab stops.  Type and
.\"	name are examples of largest possible arguments that will be passed
.\"	to .AP later.  If args are omitted, default tab stops are used.
.\"
.\" .BS
.\"	Start box enclosure.  From here until next .BE, everything will be
.\"	enclosed in one large box.
.\"
.\" .BE
.\"	End of box enclosure.
.\"
.\" .CS
.\"	Begin code excerpt.
.\"
.\" .CE
.\"	End code excerpt.
.\"
.\" .VS ?version? ?br?
.\"	Begin vertical sidebar, for use in marking newly-changed parts
.\"	of man pages.  The first argument is ignored and used for recording
.\"	the version when the .VS was added, so that the sidebars can be
.\"	found and removed when they reach a certain age.  If another argument
.\"	is present, then a line break is forced before starting the sidebar.
.\"
.\" .VE
.\"	End of vertical sidebar.
.\"
.\" .DS
.\"	Begin an indented unfilled display.
.\"
.\" .DE
.\"	End of indented unfilled display.
.\"
.\" .SO ?manpage?
.\"	Start of list of standard options for a Tk widget. The manpage
.\"	argument defines where to look up the standard options; if
.\"	omitted, defaults to "options". The options follow on successive
.\"	lines, in three columns separated by tabs.
.\"
.\" .SE
.\"	End of list of standard options for a Tk widget.
.\"
.\" .OP cmdName dbName dbClass
.\"	Start of description of a specific option.  cmdName gives the
.\"	option's name as specified in the class command, dbName gives
.\"	the option's name in the option database, and dbClass gives
.\"	the option's class in the option database.
.\"
.\" .UL arg1 arg2
.\"	Print arg1 underlined, then print arg2 normally.
.\"
.\" .QW arg1 ?arg2?
.\"	Print arg1 in quotes, then arg2 normally (for trailing punctuation).
.\"
.\" .PQ arg1 ?arg2?
.\"	Print an open parenthesis, arg1 in quotes, then arg2 normally
.\"	(for trailing punctuation) and then a closing parenthesis.
.\"
.\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.nr ^l \n(.l
.ad b
.\"	# Start an argument description
.de AP
.ie !"\\$4"" .TP \\$4
.el \{\
.   ie !"\\$2"" .TP \\n()Cu
.   el          .TP 15
.\}
.ta \\n()Au \\n()Bu
.ie !"\\$3"" \{\
\&\\$1 \\fI\\$2\\fP (\\$3)
.\".b
.\}
.el \{\
.br
.ie !"\\$2"" \{\
\&\\$1	\\fI\\$2\\fP
.\}
.el \{\
\&\\fI\\$1\\fP
.\}
.\}
..
.\"	# define tabbing values for .AP
.de AS
.nr )A 10n
.if !"\\$1"" .nr )A \\w'\\$1'u+3n
.nr )B \\n()Au+15n
.\"
.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
.\"	# BS - start boxed text
.\"	# ^y = starting y location
.\"	# ^b = 1
.de BS
.br
.mk ^y
.nr ^b 1u
.if n .nf
.if n .ti 0
.if n \l'\\n(.lu\(ul'
.if n .fi
..
.\"	# BE - end boxed text (draw box now)
.de BE
.nf
.ti 0
.mk ^t
.ie n \l'\\n(^lu\(ul'
.el \{\
.\"	Draw four-sided box normally, but don't draw top of
.\"	box if the box started on an earlier page.
.ie !\\n(^b-1 \{\
\h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.el \}\
\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.\}
.fi
.br
.nr ^b 0
..
.\"	# VS - start vertical sidebar
.\"	# ^Y = starting y location
.\"	# ^v = 1 (for troff;  for nroff this doesn't matter)
.de VS
.if !"\\$2"" .br
.mk ^Y
.ie n 'mc \s12\(br\s0
.el .nr ^v 1u
..
.\"	# VE - end of vertical sidebar
.de VE
.ie n 'mc
.el \{\
.ev 2
.nf
.ti 0
.mk ^t
\h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
.sp -1
.fi
.ev
.\}
.nr ^v 0
..
.\"	# Special macro to handle page bottom:  finish off current
.\"	# box/sidebar if in box/sidebar mode, then invoked standard
.\"	# page bottom macro.
.de ^B
.ev 2
'ti 0
'nf
.mk ^t
.if \\n(^b \{\
.\"	Draw three-sided box if this is the box's first page,
.\"	draw two sides but no top otherwise.
.ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
.el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
.\}
.if \\n(^v \{\
.nr ^x \\n(^tu+1v-\\n(^Yu
\kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
.\}
.bp
'fi
.ev
.if \\n(^b \{\
.mk ^y
.nr ^b 2
.\}
.if \\n(^v \{\
.mk ^Y
.\}
..
.\"	# DS - begin display
.de DS
.RS
.nf
.sp
..
.\"	# DE - end display
.de DE
.fi
.RE
.sp
..
.\"	# SO - start of list of standard options
.de SO
'ie '\\$1'' .ds So \\fBoptions\\fR
'el .ds So \\fB\\$1\\fR
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
.ft B
..
.\"	# SE - end of list of standard options
.de SE
.fi
.ft R
.LP
See the \\*(So manual entry for details on the standard options.
..
.\"	# OP - start of full description for a single option
.de OP
.LP
.nf
.ta 4c
Command-Line Name:	\\fB\\$1\\fR
Database Name:	\\fB\\$2\\fR
Database Class:	\\fB\\$3\\fR
.fi
.IP
..
.\"	# CS - begin code excerpt
.de CS
.RS
.nf
.ta .25i .5i .75i 1i
..
.\"	# CE - end code excerpt
.de CE
.fi
.RE
..
.\"	# UL - underline word
.de UL
\\$1\l'|0\(ul'\\$2
..
.\"	# QW - apply quotation marks to word
.de QW
.ie '\\*(lq'"' ``\\$1''\\$2
.\"" fix emacs highlighting
.el \\*(lq\\$1\\*(rq\\$2
..
.\"	# PQ - apply parens and quotation marks to word
.de PQ
.ie '\\*(lq'"' (``\\$1''\\$2)\\$3
.\"" fix emacs highlighting
.el (\\*(lq\\$1\\*(rq\\$2)\\$3
..
.\"	# QR - quoted range
.de QR
.ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
.\"" fix emacs highlighting
.el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
..
.\"	# MT - "empty" string
.de MT
.QW ""
..
.BS
.SH NAME
pop3d::udb \- Simple user database for pop3d
.SH SYNOPSIS
package require \fBTcl 8\&.5 9\fR
.sp
package require \fBpop3d::udb ?1\&.0\&.1?\fR
.sp
\fB::pop3d::udb::new\fR ?\fIdbName\fR?
.sp
\fBdbName\fR \fIoption\fR ?\fIarg arg \&.\&.\&.\fR?
.sp
\fIdbName\fR \fBdestroy\fR
.sp
\fIdbName\fR \fBadd\fR \fIuser pwd storage\fR
.sp
\fIdbName\fR \fBremove\fR \fIuser\fR
.sp
\fIdbName\fR \fBrename\fR \fIuser newName\fR
.sp
\fIdbName\fR \fBlookup\fR \fIuser\fR
.sp
\fIdbName\fR \fBexists\fR \fIuser\fR
.sp
\fIdbName\fR \fBwho\fR
.sp
\fIdbName\fR \fBsave\fR ?\fIfile\fR?
.sp
\fIdbName\fR \fBread\fR \fIfile\fR
.sp
.BE
.SH DESCRIPTION
.PP
The package \fBpop3d::udb\fR provides simple in memory databases
which can be used in conjunction with the pop3 server core provided by
the package \fBpop3d\fR\&. The databases will use the names of users
as keys and associates passwords and storage references with them\&.
.PP
Objects created by this package can be directly used in the
authentication callback of pop3 servers following the same interface
as servers created by the package \fBpop3d\fR\&.
.PP
.TP
\fB::pop3d::udb::new\fR ?\fIdbName\fR?
This command creates a new database object with an associated global
Tcl command whose name is \fIdbName\fR\&.
.PP
The command \fBdbName\fR may be used to invoke various operations on
the database\&.  It has the following general form:
.TP
\fBdbName\fR \fIoption\fR ?\fIarg arg \&.\&.\&.\fR?
\fIOption\fR and the \fIarg\fRs determine the exact behavior of the
command\&.
.PP
.PP
The following commands are possible for database objects:
.TP
\fIdbName\fR \fBdestroy\fR
Destroys the database object\&.
.TP
\fIdbName\fR \fBadd\fR \fIuser pwd storage\fR
Add a new user or changes the data of an existing user\&. Stores
\fIpassword\fR and \fIstorage\fR reference for the given \fIuser\fR\&.
.TP
\fIdbName\fR \fBremove\fR \fIuser\fR
Removes the specified \fIuser\fR from the database\&.
.TP
\fIdbName\fR \fBrename\fR \fIuser newName\fR
Changes the name of the specified \fIuser\fR to \fInewName\fR\&.
.TP
\fIdbName\fR \fBlookup\fR \fIuser\fR
Searches the database for the specified \fIuser\fR and returns a
two-element list containing the associated password and storage
reference, in this order\&. Throws an error if the user could not be
found\&. This is the interface as expected by the authentication
callback of package \fBpop3d\fR\&.
.TP
\fIdbName\fR \fBexists\fR \fIuser\fR
Returns true if the specified \fIuser\fR is known to the database,
else false\&.
.TP
\fIdbName\fR \fBwho\fR
Returns a list of users known to the database\&.
.TP
\fIdbName\fR \fBsave\fR ?\fIfile\fR?
Saves the contents of the database into the given \fIfile\fR\&. If the
file is not specified the system will use the path last used in a call
to \fIdbName\fR \fBread\fR\&. The generated file can be read by the
\fBread\fR method\&.
.TP
\fIdbName\fR \fBread\fR \fIfile\fR
Reads the specified \fIfile\fR and adds the contained user definitions
to the database\&. As the file is actually \fBsource\fR'd a safe
interpreter is employed to safeguard against malicious code\&. This
interpreter knows the \fBadd\fR command for adding users and their
associated data to this database\&. This command has the same argument
signature as the method \fBadd\fR\&. The path of the \fIfile\fR is
remembered internally so that it can be used in the next call of
\fIdbName\fR \fBsave\fR without an argument\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIpop3d\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.PP
When proposing code changes, please provide \fIunified diffs\fR,
i\&.e the output of \fBdiff -u\fR\&.
.PP
Note further that \fIattachments\fR are strongly preferred over
inlined patches\&. Attachments can be made by going to the \fBEdit\fR
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar\&.
.SH KEYWORDS
internet, network, pop3, protocol
.SH CATEGORY
Networking
.SH COPYRIGHT
.nf
Copyright (c) 2002 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>

.fi