pop3d::udb(3tcl)

NAME
pop3d::udb - Simple user database for pop3d

SYNOPSIS
package require Tcl 8.2

package require pop3d::udb ?1.0.1?

::pop3d::udb::new ?dbName?

dbName option ?arg arg ...?

dbName destroy

dbName add user pwd storage

dbName remove user

dbName rename user newName

dbName lookup user

dbName exists user

dbName who

dbName save ?file?

dbName read file

DESCRIPTION

The package pop3d::udb provides simple in memory databases which can be used in conjunction with the pop3 server core provided by the package pop3d. The databases will use the names of users as keys and associates passwords and storage references with them.

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 pop3d.

::pop3d::udb::new ?dbName?
    This command creates a new database object with an associated global Tcl command whose name is dbName.

The command dbName may be used to invoke various operations on the database. It has the following general form:

dbName option ?arg arg ...?
    Option and the args determine the exact behavior of the command.

The following commands are possible for database objects:

dbName destroy
    Destroys the database object.

dbName add user pwd storage
    Add a new user or changes the data of an existing user. Stores password and storage reference for the given user.

dbName remove user
    Removes the specified user from the database.

dbName rename user newName
    Changes the name of the specified user to newName.

dbName lookup user
    Searches the database for the specified user 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 pop3d.

dbName exists user
    Returns true if the specified user is known to the database, else false.

dbName who
    Returns a list of users known to the database.

dbName save ?file?
    Saves the contents of the database into the given file. If the file is not specified the system will use the path last used in a call to dbName read. The generated file can be read by the read method.

dbName read file
    Reads the specified file and adds the contained user definitions to the database. As the file is actually source'd a safe interpreter is employed to safeguard against malicious code. This interpreter knows the add command for adding users and their associated data to this database. This command has the same argument signature as the method add. The path of the file is remembered internally so that it can be used in the next call of dbName save without an argument.

BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category pop3d of the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist]. Please also report any ideas for enhancements you may have for either package and/or documentation.

When proposing code changes, please provide unified diffs, i.e the output of diff -u.

Note further that attachments are strongly preferred over inlined patches. Attachments can be made by going to the Edit form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar.

KEYWORDS
internet, network, pop3, protocol

CATEGORY
Networking

COPYRIGHT
Copyright (c) 2002 Andreas Kupries <andreas_kupries@users.sourceforge.net>