Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.10 2003/05/13 07:56:12 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  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 /;


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 (2004-04-17)
    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
    $self->perform_command($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');
    return;
  }

  # FIXME: make '__PACKAGE__' go one level deeper properly!
  $self->log( __PACKAGE__ . "->perform_command: " . $command, '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);
  }
  
}


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");
    
    # 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};

  #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
      # V1: via shortcut
      #$ENV{PERL5LIB} = join(' ', @INC);
      
      # FIXME!!! what about the other slots of @INC?
      $ENV{PERL5LIB} = $INC[0];
      
      #print Dumper(%ENV);
      
      #print "command: '$cmd'", "\n";

      # V1 - basic
      #run_cmd($cmd);

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