Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.13 2003/12/05 05:02:08 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  Revision 1.13  2003/12/05 05:02:08  joko
##  + minor update: disabled some unnecessary loggers or changed to debug-level
##
##  Revision 1.12  2003/06/24 20:59:51  jonen
##  added option 'detach'
##
##  Revision 1.11  2003/06/23 17:54:32  joko
##  prepared execution of in-process perl-code via eval (not activated yet!)
##
##  Revision 1.10  2003/05/13 07:56:12  joko
##  enhanced: *hierarchical* containers for context handling
##  fixes: some pre-flight checks
##  new: propagate "end-tag" event to e.g. close containers
##
##  Revision 1.9  2003/04/04 17:23:11  joko
##  minor update: debugging output
##
##  Revision 1.8  2003/03/29 07:11:54  joko
##  modified: sub run_executable
##  new: sub run_script
##
##  Revision 1.7  2003/03/28 07:02:56  joko
##  modified structure around '$wrapper_program'
##
##  Revision 1.6  2003/03/27 15:31:05  joko
##  fixes to modules regarding new namespace(s) below Data::Mungle::*
##
##  Revision 1.5  2003/03/27 15:03:03  joko
##  enhanced 'sub run_executable'
##
##  Revision 1.4  2003/02/22 16:51:21  joko
##  + enhanced run_executable
##  modified logging output
##
##  Revision 1.3  2003/02/21 01:46:17  joko
##  renamed core function
##
##  Revision 1.2  2003/02/20 19:46:33  joko
##  renamed and revamped some of modules
##  renamed methods
##  + sub run_executable
##
##  Revision 1.1  2003/02/18 15:35:25  joko
##  + initial commit
##
## ----------------------------------------------------------------------


package Data::Rap::Engine;

use strict;
use warnings;


use Data::Dumper;
use Hash::Merge qw( merge );
use Iterate;

use shortcuts qw( run_cmd );
use Data::Mungle::Code::Ref qw( ref_slot );
use Data::Mungle::Transform::Deep qw( expand deep_copy );
use File::Temp qw/ tempfile tempdir /;

my $DEBUG = 0;

sub performTarget {
  my $self = shift;
  my $targetname = shift;
  $self->perform_target($targetname);
}

sub perform_target {
  my $self = shift;
  my $targetname = shift;

  # pre-flight checks
  if (!$targetname) {
    $self->log("Target name empty. Please try to specify (e.g.) on the command line.", 'critical');
    return;
  }

  my $header = ("- " x 12) . "   " . $targetname . "   " . ("- " x 6);
  
  # V1
  #$self->log("- " x 35, 'notice');
  #$self->log("Performing Target '$targetname'.", 'notice');

  # V2
  #$self->log($header, 'notice');

  # V3
  #$self->log("- " x 20, 'info');
  $self->log("Performing Target '$targetname'.", 'notice');

  #exit;

  my $target = $self->getTargetDetails($targetname);

  # trace
    #print Dumper($target);
    #exit;
    
  $self->perform_dependencies($target);
  $self->perform_details($target);
  
  return 1;

}

sub perform_dependencies {
  my $self = shift;
  my $target = shift;
  # resolve dependencies (just run prior)
  if (my $targetname_dep = $target->{attrib}->{depends}) {
    my @targets = split(/,\s|,/, $targetname_dep);
    #print Dumper(@targets);
    #$self->perform($targetname_dep);
    #delete $target->{attrib}->{depends};
    foreach (@targets) {
      if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
        $self->perform_target($_);
      }
    }
    delete $target->{attrib}->{depends};
  }
}

sub perform_details {
  my $self = shift;
  my $target = shift;
  
  #print Dumper($target);
  #exit;
  
  foreach my $entry (@{$target->{content}}) {
    my $command = $entry->{name};
    my $args = $entry->{attrib};
    my $content = $entry->{content};
    $self->perform_command($command, $args, $content, { warn => 1 } );
    # check recursiveness
    # new condition: don't recurse if node is flagged to have inline-args (2003-04-17)
    my $has_inline_args = ($entry->{attrib}->{_args} && $entry->{attrib}->{_args} eq 'inline');
    if ($entry->{content} && ref $entry->{content} && !$has_inline_args) {
      $self->perform_details($entry);
    }
    # new of 2003-05-08
    $command ||= '';
    $self->perform_command($command . '_end', undef, undef, { warn => 0 } );
  }
}

sub rc {
  my $self = shift;
  return $self->perform_command(@_);
}

sub perform_command {
  my $self = shift;
  my $command = shift;
  my $args_list = shift;
  my $content = shift;
  my $options = shift;

  if (!$command) {
    $self->log("Command was empty!", 'debug') if $DEBUG;
    return;
  }

  # FIXME: make '__PACKAGE__' go one level deeper properly!
  $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug') if $DEBUG;
  
  
  # 1. make arguments from list of arguments(?)

  my $args = {};
  #print Dumper($args_list);
  if ($args_list) {
    if (ref $args_list eq 'ARRAY') {
      foreach (@$args_list) {
        $args = merge($args, $_);
      }
    } else {
      $args = $args_list;
    }
  }
  
  
  # 2. prepare command
  
  # default setting for internal rap commands
  my $method_prefix_default = '_';
  # setting from property database
  my $method_prefix_setting = $self->get_property('core.method_prefix');
  #print "setting: ", $method_prefix_setting, "\n";
  my $prefix = $method_prefix_setting;
  if (not defined $prefix) {
    $prefix = $method_prefix_default;
  }
  $command = $prefix . $command;
  
  
  # 3. determine container
  my $container; # = $self->getInstance();
  #$container ||= $self->getInstance();
  $container ||= $self;
  
  # 4. run method
  if ($container->can($command)) {
    $container->$command($args, $content);
  } else {
    my $level = "debug";
    $level = "warning" if $options->{warn};
    $self->log("Command '$command' not implemented.", $level) if $DEBUG;
  }
  
}


sub merge_properties {
  my $self = shift;
  my $name = shift;
  my $data = shift;

  $self->log("merge-name: $name");
  #print "name: $name", "\n";
  #print Dumper($data);
  #exit;

  # check if slot (or childs of it) is/are already occupied
  #if (my $data_old = ref_slot($self, $name, undef, '.')) {
  if (my $data_old = $self->get_property($name)) {
    #print "old:", "\n";
    #print Dumper($data_old);
    
    # FIXME: review - any options for 'merge' here?
    my $data_new = merge($data_old, $data);
    #print "DATA NEE! - MERGE!", "\n";
    #print Dumper($data_new);
    #exit;
    #merge_to($self, $data_new);
    $self->set_property( { name => $name, value => $data_new } );
    
  } else {

=pod    
    # make up a dummy hash matching the structure of the destination one
      my $dummy = {};
      ref_slot($dummy, $name, $data, '.');
      print Dumper($dummy);
    
    # mix into destination
      mixin($self, $dummy, { init => 1 });
=cut

      ref_slot($self, $name, $data, '.');

  }
  
  
  #print Dumper($self);
  #exit;
  #$self->

}

sub set_property {
  my $self = shift;
  my $args = shift;

  $self->interpolate($args) ;
  my $name = $args->{name};
  my $value = $args->{value};
  $name = '__rap.properties.' . $name;

  $self->log("set-name: $name");

  #print Dumper($name, $value, '.');

  # fill property slot with given value
  # fix (2003-04-17): always do fill if value is *defined*!!!
  if (defined $value) {
    ref_slot($self, $name, $value, '.');
  }
  
  #print Dumper($self);
  
  # FIXME!!!
  #return if ! ref $args;

  # fill property slot with (probably bigger) data structure from property-/configuration-style - file
  if (my $file = $args->{file}) {
    my $type = $args->{type};
    if (!$type) {
      die("default file (no type specified) is not implemented yet!");
    
    } elsif ($type eq 'perl-eval') {
      #die($type);
      $self->loadFromPerlFile($file, $name, $args->{'varnames'});
      
    } elsif ($type eq 'App::Config') {
      die("not implemented: $type");
      
    }

  } elsif (my $command = $args->{command}) {
    $self->perform_command($command, $args);
  
  }

}

sub get_property {
  my $self = shift;
  #my $args = shift;
  my $name = shift;

  #$self->interpolate($args);

  #my $name = $args->{name};
  my $result;

  if (!$name) {
    $self->log( __PACKAGE__ . ": no name!", 'critical');
    
  } elsif ($name eq '/') {
    $result = expand($self);

  } elsif ($name eq '.') {
    if (my $instance = $self->getInstance()) {
      $result = expand($instance);
    } else {
      $result = ref_slot($self, '__rap.properties', undef, '.');
      
    }

  } else {

    $name = '__rap.properties.' . $name;
    
    $self->log("get-name: $name") if $DEBUG;
    
    # get property slot and return value
    $result = ref_slot($self, $name, undef, '.');
    
    # FIXME: Is this okay? It's provided for now in order not
    # to deliver an 'undef' to the regex below inside 'interpolate'.
    # revamp this, maybe!
    #$result ||= '';    # NO!!!
  }
  
  return $result;
}

sub interpolate {
  my $self = shift;
  my $ref = shift;
  IterHash %$ref, sub {
    #print $_[1], "\n";
    $_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
  }
}

sub run_executable {
  my $self = shift;
  my $opts = shift;

  my $meta = deep_copy($opts);

  delete $opts->{caption};
  delete $opts->{async};
  delete $opts->{detach};

  #print Dumper($meta);

  if ($opts->{executable}) {

    my $program = $opts->{executable};
    delete $opts->{executable};

    # determine execution method
    my $wrapper_program = '';
    
    # check if program is a namespace-string (contains '::') - use 'do' in this case!
    if ($program =~ /::/) {
      #$wrapper_program = 'rap.pl';
      $wrapper_program = $0;
    }

    # prepare arguments
    my @buf;
    foreach (keys %$opts) {
      my $value = $opts->{$_};
      if (m/^_/) {
        if ($_ eq '_switches') {
          my @switches = split(/,\s|,/, $value);
          foreach my $switch (@switches) {
            push @buf, '--' . $switch;
          }
        }
        next;
      }
      
      if ($value =~ /\s/) {
        $value = "\"$value\"";
      }
      push @buf, "--$_=$value";
    }

    # build {program} & {arguments}  
    my $cmd = ($wrapper_program ? $wrapper_program . ' ' : '') . $program . ' ' . join(' ', @buf);
    
    # trace
      #print "command: $cmd", "\n";
    
    # start process
      # 2004-05-11 - seems like only ONE args is valid at PERL5LIB,
      #     so we use V2!
      # V1: join all args
      #$ENV{PERL5LIB} = join(' ', @INC);      
      # V2: insert only FIRST arg
      $ENV{PERL5LIB} = $INC[0];
      # WARNING: at (free)BSD our var is the SECOND, NOT FIRST!!
      # FIXME!! Do this in an abstract way!!
      #$ENV{PERL5LIB} = $INC[1];
      
      #print Dumper(%ENV);
      
      #print "command: '$cmd'", "\n";

      # V1 - basic
      #run_cmd($cmd);

      # V1.b - enhanced: variable local method
      $meta->{caption} ||= '';
      $meta->{async} ||= 0;
      $meta->{detach} ||= 0;
      # new of 2003-05-08: USE_PATH!
      $meta->{USE_PATH} ||= 0;
      my $evalstr = "run_cmd('$cmd', '$meta->{caption}', { async => $meta->{async}, detach => $meta->{detach}, USE_PATH => $meta->{USE_PATH} });";
      eval($evalstr);
      #my $res = do "$cmd";
      #print $res, "\n" if $res;

      #$self->log("run_executable: $evalstr", 'info');
      $self->raiseException("run_executable: $evalstr\n$@") if $@;

      # V2: via IPC::Run
      # ....  (TODO)
      
    
  }
  
}


sub run_script {

  my $self = shift;
  my $args = shift;
  my $code = shift;

  if ($args->{language} eq 'msdos/bat') {
    
    #print "code: $code", "\n";
    
    # reporting
    $self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
    $self->log("\n<code>\n$code\n</code>", 'info');
    
    # create temporary intermediate file to execute code
    my $tmpdir = '/tmp/rap';
    mkdir $tmpdir;
    (my $fh, my $filename) = tempfile( DIR => $tmpdir, SUFFIX => '.bat' );
    print $fh $code, "\n";
    run_cmd( $filename, '', { async => 1 } );
    
    # FIXME: DELETE code inside temp-files as soon as possible!
    #print $fh '';
    
    # TODO: delete FILE completely!
    # required for this: wait until execution has finished, then unlink....
    # but: "how to wait until execution is finished"?
    # i believe the best is to spawn *another* process directly from here,
    # let's call it 'watcher-agent'.
    # This one should monitor a certain running process and delete its 
    # executable file after it has finished execution.
    # Possible extensions could be:
    #   keep track of all stuff sent to STDOUT or STDERR and 
    #   send that stuff to the task-owner indirectly (not via shell/console)
    #   (e.g. via email, by posting report to a newsgroup or publishing on a specified web-page: use mod-dav!)
    
  } elsif ($args->{language} eq 'bash') {
    $self->log("FIXME: - - - - - -- - - --  BASH -  - -    -  - -   -    --   - ", 'error');

  } elsif ($args->{language} eq 'perl') {
    
    # reporting
    #$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
    #$self->log("\n<code>\n$code\n</code>", 'info');
    
    # do it
    #eval($code);
    #$self->log("\n<code>\n$code\n</code>", 'error') if $@;
    
  } else {
    $self->log("FIXME: Script language '$args->{language}' not implemented.", 'error');
    
  }

}

1;
__END__
1	joko	1.1	## ----------------------------------------------------------------------
2	jonen	1.14	## $Id: Engine.pm,v 1.13 2003/12/05 05:02:08 joko Exp $
3	joko	1.1	## ----------------------------------------------------------------------
4	joko	1.2	## $Log: Engine.pm,v $
5	jonen	1.14	## Revision 1.13 2003/12/05 05:02:08 joko
6			## + minor update: disabled some unnecessary loggers or changed to debug-level
7			##
8	joko	1.13	## Revision 1.12 2003/06/24 20:59:51 jonen
9			## added option 'detach'
10			##
11	jonen	1.12	## Revision 1.11 2003/06/23 17:54:32 joko
12			## prepared execution of in-process perl-code via eval (not activated yet!)
13			##
14	joko	1.11	## Revision 1.10 2003/05/13 07:56:12 joko
15			## enhanced: hierarchical containers for context handling
16			## fixes: some pre-flight checks
17			## new: propagate "end-tag" event to e.g. close containers
18			##
19	joko	1.10	## Revision 1.9 2003/04/04 17:23:11 joko
20			## minor update: debugging output
21			##
22	joko	1.9	## Revision 1.8 2003/03/29 07:11:54 joko
23			## modified: sub run_executable
24			## new: sub run_script
25			##
26	joko	1.8	## Revision 1.7 2003/03/28 07:02:56 joko
27			## modified structure around '$wrapper_program'
28			##
29	joko	1.7	## Revision 1.6 2003/03/27 15:31:05 joko
30			## fixes to modules regarding new namespace(s) below Data::Mungle::*
31			##
32	joko	1.6	## Revision 1.5 2003/03/27 15:03:03 joko
33			## enhanced 'sub run_executable'
34			##
35	joko	1.5	## Revision 1.4 2003/02/22 16:51:21 joko
36			## + enhanced run_executable
37			## modified logging output
38			##
39	joko	1.4	## Revision 1.3 2003/02/21 01:46:17 joko
40			## renamed core function
41			##
42	joko	1.3	## Revision 1.2 2003/02/20 19:46:33 joko
43			## renamed and revamped some of modules
44			## renamed methods
45			## + sub run_executable
46			##
47	joko	1.2	## Revision 1.1 2003/02/18 15:35:25 joko
48			## + initial commit
49			##
50	joko	1.1	## ----------------------------------------------------------------------
51
52
53			package Data::Rap::Engine;
54
55			use strict;
56			use warnings;
57
58
59			use Data::Dumper;
60	joko	1.2	use Hash::Merge qw( merge );
61	joko	1.1	use Iterate;
62	joko	1.2
63			use shortcuts qw( run_cmd );
64	joko	1.6	use Data::Mungle::Code::Ref qw( ref_slot );
65	joko	1.8	use Data::Mungle::Transform::Deep qw( expand deep_copy );
66			use File::Temp qw/ tempfile tempdir /;
67	joko	1.1
68	joko	1.13	my $DEBUG = 0;
69	joko	1.1
70			sub performTarget {
71			my $self = shift;
72			my $targetname = shift;
73	joko	1.2	$self->perform_target($targetname);
74			}
75
76			sub perform_target {
77			my $self = shift;
78			my $targetname = shift;
79
80	joko	1.10	# pre-flight checks
81			if (!$targetname) {
82			$self->log("Target name empty. Please try to specify (e.g.) on the command line.", 'critical');
83			return;
84			}
85
86	joko	1.4	my $header = ("- " x 12) . " " . $targetname . " " . ("- " x 6);
87
88	joko	1.8	# V1
89	joko	1.4	#$self->log("- " x 35, 'notice');
90			#$self->log("Performing Target '$targetname'.", 'notice');
91
92	joko	1.8	# V2
93			#$self->log($header, 'notice');
94
95			# V3
96	joko	1.13	#$self->log("- " x 20, 'info');
97	joko	1.8	$self->log("Performing Target '$targetname'.", 'notice');
98	joko	1.2
99			#exit;
100
101			my $target = $self->getTargetDetails($targetname);
102	joko	1.1
103			# trace
104			#print Dumper($target);
105			#exit;
106
107	joko	1.2	$self->perform_dependencies($target);
108			$self->perform_details($target);
109	joko	1.10
110			return 1;
111	joko	1.2
112			}
113
114			sub perform_dependencies {
115			my $self = shift;
116			my $target = shift;
117	joko	1.1	# resolve dependencies (just run prior)
118			if (my $targetname_dep = $target->{attrib}->{depends}) {
119	joko	1.2	my @targets = split(/,\s\|,/, $targetname_dep);
120			#print Dumper(@targets);
121			#$self->perform($targetname_dep);
122			#delete $target->{attrib}->{depends};
123			foreach (@targets) {
124			if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
125			$self->perform_target($_);
126			}
127			}
128	joko	1.1	delete $target->{attrib}->{depends};
129			}
130	joko	1.2	}
131	joko	1.1
132	joko	1.2	sub perform_details {
133			my $self = shift;
134			my $target = shift;
135
136			#print Dumper($target);
137			#exit;
138
139	joko	1.1	foreach my $entry (@{$target->{content}}) {
140			my $command = $entry->{name};
141			my $args = $entry->{attrib};
142	joko	1.8	my $content = $entry->{content};
143	joko	1.10	$self->perform_command($command, $args, $content, { warn => 1 } );
144	joko	1.2	# check recursiveness
145	jonen	1.12	# new condition: don't recurse if node is flagged to have inline-args (2003-04-17)
146	joko	1.10	my $has_inline_args = ($entry->{attrib}->{_args} && $entry->{attrib}->{_args} eq 'inline');
147			if ($entry->{content} && ref $entry->{content} && !$has_inline_args) {
148	joko	1.2	$self->perform_details($entry);
149			}
150	joko	1.10	# new of 2003-05-08
151	jonen	1.12	$command \|\|= '';
152	joko	1.10	$self->perform_command($command . '_end', undef, undef, { warn => 0 } );
153	joko	1.1	}
154			}
155
156			sub rc {
157			my $self = shift;
158	joko	1.2	return $self->perform_command(@_);
159	joko	1.1	}
160
161	joko	1.2	sub perform_command {
162	joko	1.1	my $self = shift;
163			my $command = shift;
164	joko	1.8	my $args_list = shift;
165			my $content = shift;
166	joko	1.10	my $options = shift;
167	joko	1.2
168	joko	1.1	if (!$command) {
169	joko	1.13	$self->log("Command was empty!", 'debug') if $DEBUG;
170	joko	1.1	return;
171			}
172	joko	1.2
173			# FIXME: make '__PACKAGE__' go one level deeper properly!
174	joko	1.13	$self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug') if $DEBUG;
175	joko	1.1
176	joko	1.10
177			# 1. make arguments from list of arguments(?)
178
179	joko	1.1	my $args = {};
180			#print Dumper($args_list);
181			if ($args_list) {
182			if (ref $args_list eq 'ARRAY') {
183			foreach (@$args_list) {
184			$args = merge($args, $_);
185			}
186			} else {
187			$args = $args_list;
188			}
189			}
190	joko	1.2
191
192	joko	1.10	# 2. prepare command
193
194			# default setting for internal rap commands
195			my $method_prefix_default = '_';
196			# setting from property database
197			my $method_prefix_setting = $self->get_property('core.method_prefix');
198			#print "setting: ", $method_prefix_setting, "\n";
199			my $prefix = $method_prefix_setting;
200			if (not defined $prefix) {
201			$prefix = $method_prefix_default;
202			}
203			$command = $prefix . $command;
204
205
206			# 3. determine container
207	joko	1.2	my $container; # = $self->getInstance();
208	joko	1.10	#$container \|\|= $self->getInstance();
209	joko	1.2	$container \|\|= $self;
210
211	joko	1.10	# 4. run method
212	joko	1.2	if ($container->can($command)) {
213	joko	1.8	$container->$command($args, $content);
214	joko	1.1	} else {
215	joko	1.10	my $level = "debug";
216			$level = "warning" if $options->{warn};
217	joko	1.13	$self->log("Command '$command' not implemented.", $level) if $DEBUG;
218	joko	1.1	}
219	joko	1.2
220	joko	1.1	}
221
222	joko	1.2
223			sub merge_properties {
224	joko	1.1	my $self = shift;
225	joko	1.2	my $name = shift;
226			my $data = shift;
227	joko	1.1
228	joko	1.2	$self->log("merge-name: $name");
229			#print "name: $name", "\n";
230			#print Dumper($data);
231			#exit;
232	joko	1.1
233	joko	1.2	# check if slot (or childs of it) is/are already occupied
234			#if (my $data_old = ref_slot($self, $name, undef, '.')) {
235			if (my $data_old = $self->get_property($name)) {
236			#print "old:", "\n";
237			#print Dumper($data_old);
238
239			# FIXME: review - any options for 'merge' here?
240			my $data_new = merge($data_old, $data);
241			#print "DATA NEE! - MERGE!", "\n";
242			#print Dumper($data_new);
243			#exit;
244	joko	1.3	#merge_to($self, $data_new);
245	joko	1.2	$self->set_property( { name => $name, value => $data_new } );
246
247	joko	1.1	} else {
248	joko	1.2
249			=pod
250			# make up a dummy hash matching the structure of the destination one
251			my $dummy = {};
252			ref_slot($dummy, $name, $data, '.');
253			print Dumper($dummy);
254
255			# mix into destination
256			mixin($self, $dummy, { init => 1 });
257			=cut
258
259			ref_slot($self, $name, $data, '.');
260
261	joko	1.1	}
262	joko	1.2
263
264			#print Dumper($self);
265			#exit;
266			#$self->
267
268			}
269	joko	1.1
270	joko	1.2	sub set_property {
271			my $self = shift;
272			my $args = shift;
273
274			$self->interpolate($args) ;
275			my $name = $args->{name};
276			my $value = $args->{value};
277			$name = '__rap.properties.' . $name;
278
279			$self->log("set-name: $name");
280	joko	1.1
281	joko	1.10	#print Dumper($name, $value, '.');
282
283	joko	1.1	# fill property slot with given value
284	joko	1.10	# fix (2003-04-17): always do fill if value is defined!!!
285			if (defined $value) {
286	joko	1.2	ref_slot($self, $name, $value, '.');
287	joko	1.1	}
288
289	joko	1.2	#print Dumper($self);
290
291	joko	1.1	# FIXME!!!
292	joko	1.2	#return if ! ref $args;
293	joko	1.1
294			# fill property slot with (probably bigger) data structure from property-/configuration-style - file
295			if (my $file = $args->{file}) {
296			my $type = $args->{type};
297			if (!$type) {
298			die("default file (no type specified) is not implemented yet!");
299
300			} elsif ($type eq 'perl-eval') {
301			#die($type);
302			$self->loadFromPerlFile($file, $name, $args->{'varnames'});
303
304			} elsif ($type eq 'App::Config') {
305			die("not implemented: $type");
306
307			}
308
309			} elsif (my $command = $args->{command}) {
310	joko	1.2	$self->perform_command($command, $args);
311	joko	1.1
312			}
313
314			}
315
316			sub get_property {
317			my $self = shift;
318			#my $args = shift;
319			my $name = shift;
320
321			#$self->interpolate($args);
322
323			#my $name = $args->{name};
324	joko	1.2	my $result;
325
326			if (!$name) {
327			$self->log( __PACKAGE__ . ": no name!", 'critical');
328
329			} elsif ($name eq '/') {
330			$result = expand($self);
331
332			} elsif ($name eq '.') {
333			if (my $instance = $self->getInstance()) {
334			$result = expand($instance);
335			} else {
336			$result = ref_slot($self, '__rap.properties', undef, '.');
337
338			}
339	joko	1.1
340	joko	1.2	} else {
341
342			$name = '__rap.properties.' . $name;
343
344	joko	1.13	$self->log("get-name: $name") if $DEBUG;
345	joko	1.2
346			# get property slot and return value
347			$result = ref_slot($self, $name, undef, '.');
348
349			# FIXME: Is this okay? It's provided for now in order not
350			# to deliver an 'undef' to the regex below inside 'interpolate'.
351			# revamp this, maybe!
352			#$result \|\|= ''; # NO!!!
353			}
354	joko	1.1
355	joko	1.2	return $result;
356	joko	1.1	}
357
358			sub interpolate {
359			my $self = shift;
360			my $ref = shift;
361			IterHash %$ref, sub {
362			#print $_[1], "\n";
363			$_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
364			}
365			}
366	joko	1.2
367			sub run_executable {
368			my $self = shift;
369			my $opts = shift;
370
371	joko	1.8	my $meta = deep_copy($opts);
372
373			delete $opts->{caption};
374			delete $opts->{async};
375	jonen	1.12	delete $opts->{detach};
376	joko	1.8
377			#print Dumper($meta);
378
379	joko	1.2	if ($opts->{executable}) {
380
381			my $program = $opts->{executable};
382			delete $opts->{executable};
383
384	joko	1.5	# determine execution method
385			my $wrapper_program = '';
386
387			# check if program is a namespace-string (contains '::') - use 'do' in this case!
388			if ($program =~ /::/) {
389	joko	1.7	#$wrapper_program = 'rap.pl';
390			$wrapper_program = $0;
391	joko	1.5	}
392
393			# prepare arguments
394	joko	1.2	my @buf;
395			foreach (keys %$opts) {
396			my $value = $opts->{$_};
397	joko	1.4	if (m/^_/) {
398			if ($_ eq '_switches') {
399			my @switches = split(/,\s\|,/, $value);
400			foreach my $switch (@switches) {
401			push @buf, '--' . $switch;
402			}
403			}
404			next;
405			}
406
407	joko	1.2	if ($value =~ /\s/) {
408			$value = "\"$value\"";
409			}
410			push @buf, "--$_=$value";
411			}
412	joko	1.5
413			# build {program} & {arguments}
414	joko	1.7	my $cmd = ($wrapper_program ? $wrapper_program . ' ' : '') . $program . ' ' . join(' ', @buf);
415	joko	1.2
416			# trace
417			#print "command: $cmd", "\n";
418
419			# start process
420	jonen	1.14	# 2004-05-11 - seems like only ONE args is valid at PERL5LIB,
421			# so we use V2!
422			# V1: join all args
423			#$ENV{PERL5LIB} = join(' ', @INC);
424			# V2: insert only FIRST arg
425	joko	1.2	$ENV{PERL5LIB} = $INC[0];
426	jonen	1.14	# WARNING: at (free)BSD our var is the SECOND, NOT FIRST!!
427			# FIXME!! Do this in an abstract way!!
428			#$ENV{PERL5LIB} = $INC[1];
429	joko	1.2
430			#print Dumper(%ENV);
431	joko	1.5
432	joko	1.7	#print "command: '$cmd'", "\n";
433	joko	1.5
434			# V1 - basic
435			#run_cmd($cmd);
436
437			# V1.b - enhanced: variable local method
438	joko	1.8	$meta->{caption} \|\|= '';
439			$meta->{async} \|\|= 0;
440	jonen	1.12	$meta->{detach} \|\|= 0;
441	joko	1.10	# new of 2003-05-08: USE_PATH!
442			$meta->{USE_PATH} \|\|= 0;
443	jonen	1.12	my $evalstr = "run_cmd('$cmd', '$meta->{caption}', { async => $meta->{async}, detach => $meta->{detach}, USE_PATH => $meta->{USE_PATH} });";
444	joko	1.5	eval($evalstr);
445			#my $res = do "$cmd";
446			#print $res, "\n" if $res;
447
448			#$self->log("run_executable: $evalstr", 'info');
449			$self->raiseException("run_executable: $evalstr\n$@") if $@;
450
451	joko	1.2	# V2: via IPC::Run
452			# .... (TODO)
453	joko	1.7
454	joko	1.2
455			}
456
457			}
458
459	joko	1.8
460			sub run_script {
461
462			my $self = shift;
463			my $args = shift;
464			my $code = shift;
465
466			if ($args->{language} eq 'msdos/bat') {
467
468			#print "code: $code", "\n";
469
470			# reporting
471			$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
472			$self->log("\n<code>\n$code\n</code>", 'info');
473
474			# create temporary intermediate file to execute code
475			my $tmpdir = '/tmp/rap';
476			mkdir $tmpdir;
477			(my $fh, my $filename) = tempfile( DIR => $tmpdir, SUFFIX => '.bat' );
478			print $fh $code, "\n";
479			run_cmd( $filename, '', { async => 1 } );
480
481			# FIXME: DELETE code inside temp-files as soon as possible!
482			#print $fh '';
483
484			# TODO: delete FILE completely!
485			# required for this: wait until execution has finished, then unlink....
486			# but: "how to wait until execution is finished"?
487			# i believe the best is to spawn another process directly from here,
488			# let's call it 'watcher-agent'.
489			# This one should monitor a certain running process and delete its
490			# executable file after it has finished execution.
491			# Possible extensions could be:
492			# keep track of all stuff sent to STDOUT or STDERR and
493			# send that stuff to the task-owner indirectly (not via shell/console)
494			# (e.g. via email, by posting report to a newsgroup or publishing on a specified web-page: use mod-dav!)
495
496			} elsif ($args->{language} eq 'bash') {
497			$self->log("FIXME: - - - - - -- - - -- BASH - - - - - - - -- - ", 'error');
498	joko	1.11
499			} elsif ($args->{language} eq 'perl') {
500
501			# reporting
502			#$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
503			#$self->log("\n<code>\n$code\n</code>", 'info');
504
505			# do it
506			#eval($code);
507			#$self->log("\n<code>\n$code\n</code>", 'error') if $@;
508	joko	1.8
509			} else {
510			$self->log("FIXME: Script language '$args->{language}' not implemented.", 'error');
511
512			}
513
514			}
515	joko	1.1
516			1;
517			__END__
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