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CipUX.3pm

NAME

CipUX - Common CipUX functions

VERSION

version 3.4.0.9

SYNOPSIS

   use CipUX;
 
   my $cipux = $CipUX->new();
 
   my $max = $cipux->max(5,6);
 
 

Or use as base class:

   use base(CipUX);
 
   my $max = $self->max(5,6);
 
 

DESCRIPTION

Provides functions common to all CipUX classes and scripts.

CONSTRUCTOR

new

Constructor

   my $cipux = CipUX->new();
 
 

SUBROUTINES/METHODS

The following functions will be exported by CipUX.

get_linewidth

Returns the CipUX line width.

perr

Prints an exception that variable name VARNAME was not used in subroutine API. This is used to discover internal programming errors.

   $cipux->perr('<NAME OF PARAMETER>');
   $cipux->perr('<NAME OF PARAMETER>','<LINE NUMBER>');
 
 

Example:

   $cipux->perr('parameter_x');
   $cipux->perr('parameter_x', 98);
 
 

exc

Prints a CipUX default exception on STDERR and exits.

  $self->exc({nr=>$nr, value=>$value, msg=>$msg });
 
 

config

Central function to retrieve config space.

   my ($x_hr, $y_hr, $z_hr) = $self->config({config_ar=>$config_ar});
 
 

Local <NAME>_config subroutine should be use to fill $config_ar

   Example:
 
   sub task_config {
       my $config_ar = [];
       push @{$config_ar}, '/home/dummmy/cipux-task.conf';
       my ($x_hr, $y_hr, $z_hr) =
         $self->config({config_ar=>$config_ar});
       return ($x_hr, $y_hr, $z_hr);
   }
 
 

source

Incorporates a config file.

store_mattrvalue

Helper function for multiple getopt parameter with values.

store_attrvalue

Helper function for single getopt parameter with value.

homedir

This is an auxiliary method replacing ~ with $ENV{HGOME}.

Syntax:

  my $file1  =  $common->homedir($file2);
 
 

Example:

  if $file1  =  ~/.cipux/cipux-object.conf
  and $ENV{HOME} = /root
  then file2 =  /root/.cipux/cipux-object.conf
 
 

lf

Laundering LDAP filter.

lp

Laundering passwords.

li

Laundering integer values.

l

Laundering of a scalar

  my $scalar = $self->l($input);
 
 

h

Check if type is hash or hash reference.

  my $hash_hr = $self->a($input_hr);
 
 

a

Check if type is array or array reference.

  my $array_ar = $self->a($input_ar);
 
 

test_cli_option

Executes some basic test on command line option regarding a hash.

date_time

returns date time format of today

latin1_to_utf8

Converts latin to UTF-8 encoding.

login_prompt

Prints a login prompt on STDOUT.

password_prompt

Prints a password prompt on STDOUT.

random_password

Calculates and returns a relatively random password.

hash_password

Calculates and returns a hashed password.

min

Calculate the minimum of two integer values.

max

Calculate the maximum of two integer values.

out

Prints content to STDOUT.

_merge_array

Helper subroutine for _hash_merge_setup. It uses Array::Unique to return a merged unique array reference.

_hash_merge_setup

Perform setup for Hash::Merge. The main change is that Arrays are also merged with uniq values.

cfg_ext

Gets all supported extensions from Config::Any and remove non supported extensions.

cfg

Query the CipUX config space to load configuration in various formats.

  0. Set cfgbase to "cipux" (+ "-$submodule" if not core module)
 
  1. Set cfgpaths to...:
     1. /usr/share/cipux/etc/$cfgbase.$ext
     2. /usr/share/cipux/etc/$cfgbase.d/*.$ext
     3. /etc/cipux/$cfgbase.$ext
     4. /etc/cipux/$cfgbase.d/*.$ext
     5. ~/.cipux/$cfgbase.$ext
 
  2. Possible $ext are: cnf .conf .json .jsn .xml .yml .yaml .ini .pl .perl
 
  #3. Optionally parse and validate uppercase "$cfgbase_cfg" environment
      variable [fail if validation fails]
 
  #4. Optionally parse and validate "cfg" commandline option
      [fail if validation fails]
 
  5. Resolve configfile list as cfgpaths, with "$cfgbase_cfg" and "cfg" appended
     if there
 
  6. Resolve bootstrap file through parsing and validating "bootstrap" option
     from all available files in cfgpaths, later declaration overriding earlier
     ones
 
  7. Resolve all options through executing bootstrap file
 
  #8. Optionally override subset of options through parsing and validating
     environment variables starting with uppercase "$cfgbase_"
     [fail if any validation fails]
 
  9. Optionally override subset of options through parsing and validating all
     options from all available files in cfgpaths [fail if any validation fails]
 
 

Notes about the above:

  * Number with leading "#" are not implemented.
 
  * config files are "layered", allowing overrides. Personal configfile
    is included last, not first, and more locations are supported.
 
  #* (subset of) options can be provided through ENV
 
  #* commandline and environment options are validated as part of parsing
 
 

Recommendation:

Even if several formats are supported, that does not mean they are all suited for this task.

  * Some configuration formats for example are too simple to express the complex
    cipux-task.perl configuration.
 
  * The CPAN Perl modules used for this configuration space are rather young
    Config::Any 2006 - 2009, Hash::Merge 2001 - 2009  and not every
    configuration file type mixture was tested. As a recommendation, you should
    not mix to many files and formats.
 
 

create_cache_dir_if_not_present

Creates a directory 'cipux' under /var/cache if not present. This is used to store serialized objects.

iterate_config_space

Takes a single config file $cfg (can be undef, but must be present) and a string representing the configuration base $cfgbase. It will then just use $cfg or it will find out regarding to $cfgbase what files should be considered.

   my $loadcfg_ar = $self->iterate_config_space(
       {
           cfg     => $cfg,
           cfgbase => $cfgbase,
       }
   );
 
 

returns a list of all configuration files which should be evaluated.

evaluate_config_space

Takes a araay ref to a list of configuration files $loadcfg_ar, preferably cunstructed by iterate_config_space. It also taks a string $cache_dir to the temporary location of a cache_dir. This value can be empty but not undef and has to be provided. It also require the $cfgbase string, the ``domain'' of the configuration.

It will calculate for every config file the MD5sum for later comparison.

         my $clean = $self->evaluate_config_space(
             {
                 loadcfg_ar => $loadcfg_ar,
                 cache_dir  => $cache_dir,
                 cfgbase    => $cfgbase,
             }
         );
 
 

It will return 0 if changed files are found and 1 if no changed files are found.

DIAGNOSTICS

This module generates the following exceptions:

TODO

CONFIGURATION AND ENVIRONMENT

Not applicable.

DEPENDENCIES

  Array::Unique
  Carp
  Class::Std
  Config::Any
  Data::Dumper
  Date::Manip
  English
  File::Basename
  File::Glob
  File::Path
  Hash::Merge
  Log::Log4perl
  Pod::Usage
  Readonly
  Storable
  Term::ReadKey
  Unicode::String
  version
 
 

INCOMPATIBILITIES

Not known.

BUGS AND LIMITATIONS

Not known.

SEE ALSO

See the CipUX web page and the manual at <http://www.cipux.org>

See the mailing list <http://sympa.cipworx.org/wws/info/cipux-devel>

AUTHOR

Christian Kuelker <christian.kuelker@cipworx.org>

LICENSE AND COPYRIGHT

Copyright (C) 2007 - 2009 by Christian Kuelker

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA