/usr/bin/cme is in libconfig-model-perl 2.021-3+deb7u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
if 0; # not running under some shell
#
# This file is part of Config-Model
#
# This software is Copyright (c) 2012 by Dominique Dumont, Krzysztof Tyszecki.
#
# This is free software, licensed under:
#
# The GNU Lesser General Public License, Version 2.1, February 1999
#
use strict;
use warnings;
use 5.10.1;
use Config::Model;
use Config::Model::Lister;
use Getopt::Long;
use Pod::Usage;
use Log::Log4perl qw(get_logger :levels);
use POSIX qw/setsid/;
use AnyEvent ;
my $log4perl_syst_conf_file = '/etc/log4config-model.conf';
my $log4perl_user_conf_file = $ENV{HOME} . '/.log4config-model';
my $fallback_conf = << 'EOC';
log4perl.logger=WARN, Screen
log4perl.appender.Screen = Log::Log4perl::Appender::Screen
log4perl.appender.Screen.stderr = 0
log4perl.appender.Screen.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.Screen.layout.ConversionPattern = %d %m %n
EOC
my $log4perl_conf =
-e $log4perl_user_conf_file ? $log4perl_user_conf_file
: -e $log4perl_syst_conf_file ? $log4perl_syst_conf_file
: \$fallback_conf;
Log::Log4perl::init($log4perl_conf);
my $ui_type;
eval { require Config::Model::TkUI; };
my $has_tk = $@ ? 0 : 1;
eval { require Config::Model::CursesUI; };
my $has_curses = $@ ? 0 : 1;
eval { require Config::Model::FuseUI; };
my $has_fuse = $@ ? 0 : 1;
my $model_dir;
my $trace = 0;
my $root_dir;
my $man = 0;
my $help = 0;
my $force_load = 0;
my $dev = 0;
my $backend;
my $experience = 'beginner';
my $dumptype;
my $load;
my $force_save = 0;
my $open_item = '';
my $fuse_dir;
my $fuse_debug = 0;
my $apply_fixes = 0;
my $search;
my $search_type = 'all';
my %command_option = (
list => [],
check => [],
migrate => [],
fix => [],
modify => [],
search => [
"search=s" => \$search,
"narrow-search=s" => \$search_type,
],
edit => [
"ui|if=s" => \$ui_type,
"open_item|open-item=s" => \$open_item,
],
dump => [ "dumptype:s" => \$dumptype, ],
fusefs => [
"fuse_dir|fuse-dir=s" => \$fuse_dir,
"dfuse!" => \$fuse_debug,
],
);
my @global_options = (
"model_dir|model-dir=s" => \$model_dir,
"experience=s" => \$experience,
"dev!" => \$dev,
"force_load|force-load!" => \$force_load,
"root_dir|root-dir=s" => \$root_dir,
"backend=s" => \$backend,
"stack-trace|trace!" => \$trace,
);
# retrieve the main command, i.e. the first arg without leading dash
my ($command) = grep { ! /^-/ } @ARGV ;
pod2usage(-message => 'no command specified', -verbose => 0)
unless defined $command ;
pod2usage( -verbose => 1 ) if $command =~ /help/;
pod2usage( -verbose => 2 ) if $command =~ /man/;
my $cmd_options = $command_option{$command}
|| pod2usage(-message => "unknown command: $command", -verbose => 0) ;
my $result = GetOptions( @global_options, @$cmd_options);
pod2usage(-verbose => 0) if not $result;
# now @ARGV should be $command, $application, [ $config_file ]
shift @ARGV;
my $application = shift @ARGV ;
# ignore $dev if run as root
if ( $> and $dev ) {
unshift @INC, 'lib';
$model_dir = 'lib/Config/Model/models/';
warn "-dev option is ignored when run as root\n";
}
Config::Model::Exception::Any->Trace(1) if $trace;
if ( defined $root_dir && !-e $root_dir ) {
mkdir $root_dir, 0755 || die "can't create $root_dir:$!";
}
my $model = Config::Model->new( model_dir => $model_dir );
my ( $categories, $appli_info, $appli_map ) =
Config::Model::Lister::available_models;
my $root_model = $appli_map->{$application} ;
if (not defined $root_model) {
warn "Unknown application: $application\n";
}
if ( not defined $root_model or $command eq 'list') {
print "The following applications are available:\n";
foreach my $cat ( keys %$categories ) {
my $names = $categories->{$cat} || [];
next unless @$names;
print "$cat:\n\t", join( "\n\t", @$names ), "\n";
}
exit 1;
}
my $config_file ;
$config_file = shift @ARGV if $appli_info->{$application}{require_config_file} ;
my $inst = $model->instance(
root_class_name => $root_model,
instance_name => $application,
root_dir => $root_dir,
check => $force_load ? 'no' : 'yes',
skip_read => $load ? 1 : 0,
backend => $backend,
config_file => $config_file,
);
my $root = $inst->config_root;
if ($command eq 'edit' and not defined $ui_type ) {
if ($has_tk) {
$ui_type = 'tk';
}
elsif ($has_curses) {
warn "You should install Config::Model::TkUI for a ",
"more friendly user interface\n";
$ui_type = 'curses';
}
else {
warn "You should install Config::Model::TkUI or ",
"Config::Model::CursesUI ",
"for a more friendly user interface\n";
$ui_type = 'shell';
}
}
if ( $command eq 'dump' ) {
my $dump_string = $root->dump_tree( mode => $dumptype || 'custom' );
print $dump_string ;
}
elsif ( $command eq 'check' ) {
$root->dump_tree( mode => 'full' );
}
elsif ( $command eq 'search' ) {
pod2usage(-message => "missing -search option with search command" )
unless defined $search;
my @res = $root->tree_searcher( type => $search_type )->search($search);
foreach my $path ( @res ) {
print "$path";
my $obj = $root->grab($path);
if ( $obj->get_type =~ /leaf|check_list/ ) {
my $v = $obj->fetch;
$v = defined $v ? $v : '<undef>';
print " -> '$v'";
}
print "\n";
}
}
elsif ($command eq 'migrate') {
$force_save = 1;
$root->migrate;
}
elsif ($command eq 'fix') {
say "Fixing..." ;
$inst->apply_fixes;
$force_save = 1;
}
elsif ( $command eq 'modify' ) {
$root->load("@ARGV");
$force_save = 1;
}
elsif ( $command =~ /^fuse/ ) {
die "could not load Config::Model::FuseUI. Is Fuse installed ?\n"
unless $has_fuse;
die "Missing -fuse_dir option\n" unless defined $fuse_dir;
die "Directory $fuse_dir does not exists\n" unless -d $fuse_dir;
my $ui = Config::Model::FuseUI->new(
root => $root,
mountpoint => "$fuse_dir",
);
print "Mounting config on $fuse_dir in background.\n",
"Use command 'fusermount -u $fuse_dir' to unmount\n";
# now fork
my $pid = fork;
if ( defined $pid and $pid == 0 ) {
# child process, just run fuse and wait for exit
$ui->run_loop( debug => $fuse_debug );
$force_save = 1;
}
else {
exit; # don't save data in parent process
}
}
elsif ( $command eq 'edit' ) {
if ( $ui_type eq 'simple' ) {
# experience not yet implemented
require Config::Model::SimpleUI;
my $shell_ui = Config::Model::SimpleUI->new(
root => $root,
title => $root_model . ' configuration',
prompt => ' >',
);
# engage in user interaction
$shell_ui->run_loop;
}
elsif ( $ui_type eq 'shell' ) {
# experience not yet implemented
require Config::Model::TermUI;
my $shell_ui = Config::Model::TermUI->new(
root => $root,
title => $root_model . ' configuration',
prompt => ' >',
);
# engage in user interaction
$shell_ui->run_loop;
}
elsif ( $ui_type eq 'curses' ) {
die "cannot run curses interface: ",
"Config::Model::CursesUI is not installed\n"
unless $has_curses;
my $err_file = '/tmp/cme-error.log';
print "In case of error, check $err_file\n";
open( FH, "> $err_file" ) || die "Can't open $err_file: $!";
open STDERR, ">&FH";
my $dialog = Config::Model::CursesUI->new( experience => $experience, );
# engage in user interaction
$dialog->start($model);
close FH;
}
elsif ( $ui_type eq 'tk' ) {
die "cannot run Tk interface: Config::Model::CursesUI is not installed\n"
unless $has_tk;
require Tk;
require Tk::ErrorDialog;
Tk->import;
# BLEEUAARGHHH.
# Currently AnyEvent is loaded and called only within Debian::Dpkg backend
# and C::M::Debian::Dependency. When called in a Tk environment
# AnyEvent creates its own TK mw which may be along the one created below
# this require make sure that AnyEvent Tk mw is created and used for Tk application
require AnyEvent::Impl::Tk ;
# without that, C::M::TkUI::quit (which just destroys one $mw, not 2) is not enough
# to end the program :-(
no warnings 'once' ;
my $mw = $AnyEvent::Impl::Tk::mw ;#|| MainWindow->new;
# $mw->withdraw;
# Thanks to Jerome Quelin for the tip
$mw->optionAdd( '*BorderWidth' => 1 );
my $cmu = $mw->ConfigModelUI(
-root => $root,
-experience => $experience
);
if ($open_item) {
my $obj = $root->grab($open_item);
$cmu->force_element_display($obj);
}
&MainLoop; # Tk's
}
elsif ( $ui_type =~ /^no/i ) {
# trigger a dump to load all sub-models
my $dump = $root->dump_tree;
$force_save = 1 if $apply_fixes or $load or @ARGV;
}
else {
die "Unsupported user interface: $ui_type";
}
}
else {
die "Looks like the author forgot to implement $command. Bad author, bad.";
}
if ($force_save) {
my @changes = $inst->list_changes ;
say "\n",join( "\n- ","Changes:", @changes ) if @changes;
$inst->write_back ;
}
exit 0;
__END__
=pod
=head1 NAME
cme - Edit data of configuration managed by Config::Model
=head1 SYNOPSIS
# general synopsis
cme [ global_options ] command application [ options ] arguments
# edit dpkg config with GUI
cme edit dpkg
# edit /etc/sshd_config (requires Config::Model::OpenSsh)
sudo cme edit sshd
# edit ~/.ssh/config (requires Config::Model::OpenSsh)
cme edit ssh
# just check the validity of a file
cme check multistrap file.conf
# check dpkg files, update deprecated parameters and save
cme migrate dpkg
# like migrate, but also apply all suggested fixes
cme fix dpkg
# modify configuration with command line
cme modify dpkg source 'format="quilt (3.0)"'
# edit a file (file name specification is mandatory here)
cme edit multistrap my.conf
# map conf data to a fuse file system
cme fusefs multistrap my.conf -d fuse_dir
# likewise for dpkg data
cme fusefs dpkg -d fuse_dir
# list all available applications (depends on your installation)
cme list
=head1 DESCRIPTION
C<cme> program will use Config::Model configuration
descriptions to check or modify or fix configuration files.
=head1 Commands
=head2 list
Show a list all applications where a model is available. This list depends on
installed Config::Model modules.
=head2 edit
Edit a configuration. By default, a Tk GUI will be opened If L<Config::Model::TkUI> is
installed. You can choose another user interface with the C<-ui> option:
=over
=item *
C<tk>: provides a Tk graphical interface (If L<Config::Model::TkUI> is
installed).
=item *
C<curses>: provides a curses user interface (If
L<Config::Model::CursesUI> is installed).
=item *
C<shell>: provides a shell like interface. See L<Config::Model::TermUI>
for details.
=back
=head2 check
Checks the content of the configuration file of an application. Prints warnings
and errors on STDOUT.
Example:
cme check lcdproc
=head2 migrate
Checks the content of the configuration file of an application, update deprecated
(old value are saved to new parameters) and save the new configuration.
For more details, see L<Config::Model::Value/Upgrade>
=head2 fix
Like C<migrate> and, when possible, fix the warnings of a configuration.
=head2 modify
Modify a configuration file with the values passed on the command line.
These command must follow the syntax defined in L<Config::Model::Loader>.
Example:
cme modify dpkg source format="quilt (3.0)"
cme modify multistrap my_mstrap.conf sections:base source="http://ftp.fr.debian.org"
=head2 search
You can search the configuration with the following options
=over
=item -search
Specifies a string or pattern to search. C<cme> will a list of path pointing
to the matching tree element and their value.
See L<Config::Model::AnyThing/grab(...)> for details
on the path syntax.
=item -narrow-search
Narrows down the search to:
=over
=item element
=item value
=item key
=item summary
Summary text
=item description
description text
=item help
value help text
=back
=back
Example:
$ cme search multistrap my_mstrap.conf -s http -narrow value
sections:base source -> 'http://ftp.fr.debian.org'
sections:debian source -> 'http://ftp.uk.debian.org/debian'
sections:toolchains source -> 'http://www.emdebian.org/debian'
=head2 dump
Dump configuration content on STDOUT with Config::Model syntax.
By default, dump only custom values, i.e. different from application
built-in values or model default values. You can use the C<-dumptype> option for
other types of dump:
-dumptype [ full | preset | custom ]
Choose to dump every values (full), only preset values or only
customized values (default)
=head2 fusefs
Map the configuration file content to a FUSE virtual file system.
You must give a directory where
the virtual file system will be mounted with option C<-fuse-dir>.
To stop (and write the configuration data back to the configuration file),
run C<< fusermount -u <mounted_fuse_dir> >>. Use C<-dfuse> option to debug
fuse problems.
=head1 Global options
The following options are available for all commands:
=over
=item -experience
Change the experience level. By default only parameters with "beginner" experience
are shown or modifiable. You can choose C<advanced> or C<master> level to get
access to more parameters. Note that experience level can be changed in the GUI with the
I<options> menu.
=item -force-load
Load file even if error are found in data. Bad data are discarded
=item -dev
Use this option if you want to test a model under development. This
option will add C<lib> in C<@INC> and use C<lib/Config/Model/models>
as model directory. This option is ignored when run as root.
=item -model-dir
Specify an alternate directory to find model files. Mostly useful for
tests.
=item -root-dir
Specify a pseudo root directory to read and write the configuration
files. (Actual default directory and file names depends on the model
(See C<-model> option). For instance, if you specify C<~/mytest>, the
C</etc/ssh/sshd_config> files will be written in C<~/mytest/etc/ssh/>
directory.
=item -stack-trace
Provides a full stack trace when exiting on error.
=item -backend
Specify a read/write backend. The actual backend name depends on the model
passed to C<-model> option. See L<Config::Model::AutoRead> for details.
=back
=head1 Embedding cme
You can use cme from another program by using C<-ui simple>
option. This way you will be able to send command on the standard input
of C<cme> and get the results from the standard output.
=head1 Logging
All Config::Model logging is now based on L<Log::Log4perl>.
Logging can be configured in the following files:
=over
=item *
~/.log4config-model
=item *
/etc/log4config-model.conf
=back
Without these files, the following Log4perl config is used:
log4perl.logger=WARN, Screen
log4perl.appender.Screen = Log::Log4perl::Appender::Screen
log4perl.appender.Screen.stderr = 0
log4perl.appender.Screen.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.Screen.layout.ConversionPattern = %d %m %n
Log4perl uses the following categories:
=over
=item Anything
=item Anything::Change
Trace change notification through configuration tree and instance.
=item Backend
=item Backend::Debian::Dpkg
=item Backend::Debian::Dpkg::Control
=item Backend::Debian::Dpkg::Copyright
=item Backend::Fstab
=item Backend::IniFile
=item Backend::PlainFile
=item Backend::ShellVar
=item Backend::Yaml
=item FuseUI
=item Instance
=item Loader
=item Model::Searcher
=item Tree::Element::CheckList
=item Tree::Element::Id
=item Tree::Element::Id::Hash
=item Tree::Element::Id::List
=item Tree::Element::Value
=item Tree::Element::Value::Dependency
=item Tree::Node
=item Tree::Node::Warped
=item ValueComputer
=item Warper
=item Wizard::Helper
=item Model
=back
More categories will come.
=head1 SUPPORT
For support, please check the following resources:
=over
=item *
The config-model users mailing list:
config-model-users at lists.sourceforge.net
=item *
The config-model wiki: L<http://config-model.wiki.sourceforge.net/>
=back
=head1 FEEDBACKS
Feedback from users are highly desired. If you find this module useful, please
share your use cases, success stories with the author or with the config-model-
users mailing list.
=head1 AUTHOR
Dominique Dumont, ddumont at cpan dot org
=head1 SEE ALSO
L<Config::Model::Model>,
L<Config::Model::Instance>,
L<Config::Model::Node>,
L<Config::Model::HashId>,
L<Config::Model::ListId>,
L<Config::Model::WarpedNode>,
L<Config::Model::Value>
=cut
|