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

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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  SF   Trackers
       [http://sourceforge.net/tracker/?group_id=12883].    Please  also  report  any  ideas  for
       enhancements you may have for either package and/or documentation.

KEYWORDS

       internet, network, pop3, protocol

CATEGORY

       Networking

COPYRIGHT

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