Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.11 2003/06/23 17:54:32 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  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 /;


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