diff options
Diffstat (limited to 'lib/Arctica/Core/Mother/Forker.pm')
| -rw-r--r-- | lib/Arctica/Core/Mother/Forker.pm | 743 |
1 files changed, 743 insertions, 0 deletions
diff --git a/lib/Arctica/Core/Mother/Forker.pm b/lib/Arctica/Core/Mother/Forker.pm new file mode 100644 index 0000000..21fd8c1 --- /dev/null +++ b/lib/Arctica/Core/Mother/Forker.pm @@ -0,0 +1,743 @@ +################################################################################ +# _____ _ +# |_ _| |_ ___ +# | | | ' \/ -_) +# |_| |_||_\___| +# _ _ ____ _ _ +# / \ _ __ ___| |_(_) ___ __ _ | _ \ _ __ ___ (_) ___ ___| |_ +# / _ \ | '__/ __| __| |/ __/ _` | | |_) | '__/ _ \| |/ _ \/ __| __| +# / ___ \| | | (__| |_| | (_| (_| | | __/| | | (_) | | __/ (__| |_ +# /_/ \_\_| \___|\__|_|\___\__,_| |_| |_| \___// |\___|\___|\__| +# |__/ +# The Arctica Modular Remote Computing Framework +# +################################################################################ +# +# Copyright (C) 2015-2016 The Arctica Project +# http://http://arctica-project.org/ +# +# This code is dual licensed: strictly GPL-2 or AGPL-3+ +# +# GPL-2 +# ----- +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the +# Free Software Foundation, Inc., +# +# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. +# +# AGPL-3+ +# ------- +# This programm is free software; you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This programm is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. +# +# You should have received a copy of the GNU Affero General Public License +# along with this program; if not, write to the +# Free Software Foundation, Inc., +# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. +# +# Copyright (C) 2015-2016 Guangzhou Nianguan Electronics Technology Co.Ltd. +# <opensource@gznianguan.com> +# Copyright (C) 2015-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de> +# +################################################################################ +package Arctica::Core::Mother::Forker; +use strict; +use Arctica::Core::eventInit qw( genARandom BugOUT ); +use Data::Dumper; +use Exporter qw(import); +## Be very selective about what (if any) gets exported by default: +our @EXPORT = qw(); +## And be mindfull of what we lett the caller request here too: +our @EXPORT_OK = qw(); + +use POSIX qw(:sys_wait_h mkfifo); +use FileHandle; +use IO::Pty; + +my $arctica_core_object; + +# A BUNCH OF CLEANUP STUFF IS MISSING RIGHT NOW +# CLEANUP WHEN CHILD TERMINATES AND ON "DESTROY" +# FIX THAT SOON AND REMOVE THIS TEXT WHEN ITS DONE + +sub new { + BugOUT(9,"Mother::Forker new->ENTER"); + my $class_name = $_[0];# Be EXPLICIT!! DON'T SHIFT OR "@_"; + $arctica_core_object = $_[1]; + my $the_tmpdir = $arctica_core_object->{'a_dirs'}{'tmp_adir'}; + my $dev_conf = $_[2]; + + if (lc($dev_conf->{'fork_style'}) =~ /^(interactive_pty)$/) { + # There may be future options for other ways of going about forking... + # But hopefully the interavtive_pty method will be a good universal approach for most + $dev_conf->{'fork_style'} = $1; + BugOUT(9,"Mother::Forker fork_style is $dev_conf->{'fork_style'}"); + } else { + die("Mother::Forker Unknown fork_style: '$dev_conf->{'fork_style'}'"); + } + + my $self = { + dummydata => {# RM this junk before public release! + somevalue => 321, + otherinfo => "The Other INFO!", + }, + child_name => $dev_conf->{'child_name'}, + fork_style => $dev_conf->{'fork_style'}, + isArctica => 1, # Declare that this is a Arctica "something" + aobject_name => "MForker_Child", + }; + + if (-x $dev_conf->{'exec_path'}) { + if ($dev_conf->{'exec_path'} =~ /^\//) {# Not M$ Windoz friendly... deal with that later... + $self->{'exec_path'} = $dev_conf->{'exec_path'}; + BugOUT(9,"Mother::Forker exec_path is $self->{'exec_path'}"); + } else { + die("We're only going to fork stuff you provide a full path for. ('$dev_conf->{'exec_path'}'!?!?)"); + } + } else { + die("$dev_conf->{'exec_path'} is not executable!"); + } + + if ($dev_conf->{'exec_cl_argv'}) {# add some sanity checks and whatnot here? + BugOUT(9,"Mother::Forker We got command line arguments for child!"); + $self->{'exec_cl_argv'} = $dev_conf->{'exec_cl_argv'}; + } + + if ($dev_conf->{'return_stdin'} eq 1) { + $self->{'stdin'} = 1; + } + + if ($dev_conf->{'handle_stdeoc'}) {# combine ERR and OUT EOC = "Err+Out Combined" + if ($dev_conf->{'handle_stdout'} or $dev_conf->{'handle_stderr'}) { + die("You can't have a combo STEOC and individual ERR and OUT handlers"); + } + BugOUT(9,"Mother::Forker Combining STDERR into STDOUT"); + $self->{'handle_stdeoc'} = $dev_conf->{'handle_stdeoc'}; + } else { + if ($dev_conf->{'handle_stdout'}) { + BugOUT(9,"Mother::Forker Individual handler for STDOUT"); + $self->{'handle_stdout'} = $dev_conf->{'handle_stdout'}; + } else { + BugOUT(9,"Mother::Forker No handler for STDOUT"); + } + if ($dev_conf->{'handle_stderr'}) { + BugOUT(9,"Mother::Forker Individual handler for STDERR"); + $self->{'handle_stderr'} = $dev_conf->{'handle_stderr'}; + } else { + BugOUT(9,"Mother::Forker No handler for STDERR"); + } + } + + if ($dev_conf-> {'handle_death'}) { + BugOUT(9,"Mother::Forker GoT handler for DEATH of forked child"); + $self->{'handle_death'} = $dev_conf->{'handle_death'}; + } else { + BugOUT(9,"Mother::Forker No handler for DEATH of forked child"); + } + $self->{'child_aid'} = genARandom('id'); + + bless($self, $class_name);# Blessed be thy object. + # Then append our self to the ACO tree: + $arctica_core_object->{'aobj'}{'MForker'}{$self->{'child_aid'}} = \$self; + +# START dealing with ENV here. + if ($dev_conf->{'env_strict'}) { + $self->{'env_strict'} = 1; + if ($dev_conf->{'env_pass'}) { + $self->{'env_pass'} = $dev_conf->{'env_pass'}; + } + } + if ($dev_conf->{'env_set'}) { + $self->{'env_set'} = $dev_conf->{'env_set'}; + } +# DONE dealing with ENV here. + + if ($dev_conf->{'exec_hold'} eq 1) {# Not executing yet, eh? + BugOUT(9,"Mother::Forker exec_hold requested!!"); + } else {# Executing right away, huh!? + BugOUT(9,"Mother::Forker NO HOLD requested, executing now..."); + $self->run_child(); + } + $self->_chkncreatedir(); + return $self; +} + +sub run_child { + BugOUT(8,"Mother::Forker about to run_child..."); + my $self = $_[0]; + + $self->_afork_ipty(); +} + +sub _afork_ipty { + my $self = $_[0]; + my $main_pty = IO::Pty->new; + $main_pty->set_raw();# WE DONT WANT ECHOING OF WHAT WE SEND... + + my $errpipe; + if ($self->{'handle_stderr'}) { + $errpipe = $self->_create_pipe($self->{'handle_stderr'}); + } + + unless ($self->{'child_pid'} = fork) { + # START OF THE FORKING CHILD + $ENV{LANG} = "C";# We wan't to be dealing with the child in English + my $slave_pty = $main_pty->slave; + $main_pty->make_slave_controlling_terminal(); +# $main_pty->slave->clone_winsize_from(\*STDIN); + STDOUT->autoflush(1);# These three sometimes makes a difference. + STDERR->autoflush(1);# Other times they don't... + STDIN->autoflush(1); # Depending on the child?!? at least causes no problems. + + my $slave_pty_fn = $slave_pty->fileno; + open STDIN, "<&$slave_pty_fn" or die $!; + + if ($self->{'handle_stdeoc'}) { + open STDOUT, ">&$slave_pty_fn" or die $!; + open STDERR, ">&STDOUT" or die $!; + } else { + open STDOUT, ">&$slave_pty_fn" or die $!; + if ($self->{'handle_stderr'}) { + BugOUT(9,"Mother::Forker Sending STDERR to fifopipe $errpipe"); + open(STDERR, ">$errpipe") or die($!); + } else { + BugOUT(9,"Mother::Forker Sending STDERR to /dev/null"); + open(STDERR, ">/dev/null") or die($!); + } + } + + my @cl_args;# Move this whole following code chunk out of the child??? + if ($self->{'exec_cl_argv'}) { + foreach my $the_arg (@{$self->{'exec_cl_argv'}}) { + # do some sanitation here? + push @cl_args, $the_arg; + } + } + +# START dealing with ENV here. + if ($self->{'env_strict'}) {# Yay! Strict ENV! + foreach my $key (sort keys %ENV) { + if (($key =~ /^A\_/) and ($self->{'env_pass'}{'ARCTICA'} eq 1)) { +# Probably do nothing here!?! + } elsif ($self->{'env_pass'}{$key} eq 1) { +# Probably do nothing here!?! + } else { + $ENV{$key} = undef; + delete($ENV{$key}); + } + } + } + + if ($self->{'env_set'}) { + foreach my $key (keys $self->{'env_set'}) { + $ENV{$key} = $self->{'env_set'}{$key}; + } + } +# DONE dealing with ENV here. + + exec($self->{'exec_path'},@cl_args); + + # END OF THE FORKING CHILD + } + + if ($self->{'child_pid'} > 0) { + BugOUT(8,"Mother::Forker child PID is: $self->{'child_pid'}"); + $self->{'glib_tnw'}{'reaper_of_zombie_children'} = Glib::Timeout->add(500, sub {\$self->_is_child_alive();}, undef, 1 ); + if ($self->{'stdin'} eq 1) { + $self->{'stdin'} = $main_pty; + } + if ($self->{'handle_stdeoc'}) { + $self->{'glib_tnw'}{'stderr_and_out'} = Glib::IO->add_watch( + fileno( $main_pty ), ['in', 'hup','err'], + sub {\$self->_input_reader($main_pty,$self->{'handle_stdeoc'},$_[0],$_[1],$_[2]);}); + BugOUT(9,"Mother::Forker combined STD OUT/ERR watcher initiated."); + } else { + if ($self->{'handle_stdout'}) { + $self->{'glib_tnw'}{'stdout'} = Glib::IO->add_watch( + fileno( $main_pty ), ['in', 'hup','err'], + sub {\$self->_input_reader($main_pty,$self->{'handle_stdout'},$_[0],$_[1],$_[2]);}); + BugOUT(9,"Mother::Forker STDOUT watcher initiated."); + } else { + # Apparently we need to pretend to do something with STDOUT to keep everything happy... + $self->{'glib_tnw'}{'stdout'} = Glib::IO->add_watch( + fileno( $main_pty ), ['in', 'hup','err'], + sub {\$self->_input_reader($main_pty,sub {},$_[0],$_[1],$_[2]);}); + BugOUT(9,"Mother::Forker watching STDOUT but doing nothing."); + } +# if ($self->{'handle_stderr'}) { +# This is already being taken care of by the pipe plumber.. +# Do nothing here? remove this chunk before release?!!? +# print "INSERT ERRPIPE STUFF HERE!\n"; +# } + } + } else { + warn("FAIL TO FORK!");# The application using this module may want to try to recover from this.. or not?!? + } +} + +sub _is_child_alive {# Idealy you should catch deaths before this do... + # Could this be done more effichient and pretty? + my $self = $_[0]; + my $thekill = kill(0,$self->{'child_pid'}); + if ($thekill > 0) { + foreach my $zpid (ZombieSlayer()) { + $zpid =~ s/\D//g; + if ($zpid eq $self->{'child_pid'}) { + BugOUT(8,"Mother::Forker child appear to be dead..."); + $self->limpiador_de_la_muerte(); + } + } + } else { + # insert the call for cleanup here too? + } +} + + +sub limpiador_de_la_muerte { + my $self = $_[0]; + if ($self->{'dead'} ne 1) {# Death may be noticed multiple places... + $self->{'dead'} = 1;# Prevents multiple cleanup instances... + my $death_handler; + + if ($self->{'handle_death'}) { + $death_handler = $self->{'handle_death'}; + } + +# Glib::Source->remove($self->{'glib_timeout'});# THESE TWO NEED TO GO... +# Glib::Source->remove($self->{'glib_watcher'});# foreach of $self->{'glib_tnw'} instead... +# Not that it's really needed.... explicitly cleaning shit up never hurt nobody... + + if ($death_handler) { + $death_handler->("AAAAAAAWWWWWWWWWWWWWW WERE DEAD!!!"); + } + return 0; + } +} + +sub send { + my $self = $_[0]; + if ($self->{'stdin'} and ($self->{'dead'} ne 1)) { + my $bytes_written = syswrite($self->{'stdin'},"$_[1]\n") or warn("Mother::Forker fail to write to childs STDIN"); + $self->{'stdin'}->flush;# REDUNDANT!? + if ($bytes_written > 0) { + BugOUT(9,"Mother::Forker $bytes_written bytes Written to childs STDIN") + } else { + if (lenght($_[1]) > 0) { + warn("Mother::Forker fail to write to childs STDIN"); + } else { + warn("Mother::Forker WTF?!"); + } + } + } else { + warn("Mother::Forker write: Did not write a damn thing!"); + } +} + +sub _input_reader { + my $self = $_[0]; + my $read_fd = $_[1]; + my $handler_function = $_[2]; +# print "$read_fd\t$_[3]\t$_[4]\t$_[5]\n\n";# don't forget to either remove this or turn it into a bugout + my $buffer; + my $bytesread = sysread($read_fd,$buffer,8192); + if ($bytesread > 0) { + foreach my $line (split(/\n/, $buffer)) { + $line =~ s/\n//g; + unless ($line =~ /^\s*$/) { + $handler_function->($line); + } else { +# print "GOT EMPTY LINE\n"; + } + } + } + return 1; +} + +sub _create_pipe { + my $self = $_[0]; + my $handler_function = $_[1]; + if ($handler_function) { + my $fullpath2 = $self->_chkncreatedir(); + my $pipeid = genARandom('id'); + my $pipeFH = FileHandle->new; + mkfifo("$fullpath2/$pipeid.fifo",0700); + open($pipeFH,"+<$fullpath2/$pipeid.fifo"); + $pipeFH->autoflush(1); + $self->{'glib_tnw'}{"fifo_$pipeid"} = Glib::IO->add_watch($pipeFH->fileno, [qw/in/], + sub {\$self->_input_reader($pipeFH,$handler_function,$_[0],$_[1],$_[2]);} ,$pipeFH); + + return "$fullpath2/$pipeid.fifo"; + } else { + die("Mother::Forker did you forget to specify a handler func?"); + } +} + +sub log_slurper {# create pipe we can declare as log file. + my $self = $_[0]; + my $handler_function = $_[1]; + if ($handler_function) { + unless (($self->{'dead'} eq 1) and ($self->{'child_pid'} > 0)) { + print "SLURP!!!!!!!!!!!!!! NOM NOM NOM.....\n"; + my $pipe_path = $self->_create_pipe($handler_function); + if (-p $pipe_path) { + return $pipe_path; + } else { + die("Mother::Forker Unable to create pipe"); + } + } else { + die("Mother::Forker Slurper must be initated before exec!"); + } + } +} + + +sub clargv_append { + my $self = $_[0]; + my $new_clargv = $_[1]; + unless ($new_clargv =~ /^\s*$/) { + unless (($self->{'dead'} eq 1) and ($self->{'child_pid'} > 0)) { + push $self->{'exec_cl_argv'}, $new_clargv; + } else { + die("Mother::Forker Must append cl_argv before exec!"); + } + } +} + + +sub new_blank_file { + my $self = $_[0]; + my $options = $_[1]; + my $full_path = $self->_chkncreatedir('files'); + if (-d $full_path) { + my $file_id = genARandom('id'); + my $fext = "file"; + if ($options->{'_configfile'} eq 1) { + $fext = "conf"; + } + if (($options->{'_configfile'} ne 1) and ($options->{'create'} eq 1)) { + open(EMPTY,">$full_path/$file_id.$fext") + or die("Mother::Forker Can't create file: '$full_path/$file_id.$fext' ($!)"); + close(EMPTY); + BugOUT(9,"Mother::Forker created empty file: '$full_path/$file_id.$fext'"); + } else { + BugOUT(9,"Mother::Forker got path for new file: '$full_path/$file_id.$fext'"); + } + + if (lc($options->{'name'}) =~ /^([a-z]{1,16})$/) { + $self->{'Files'}{$file_id}{'name'} = $1; + } + $self->{'Files'}{$file_id}{'path'} = "$full_path/$file_id.$fext"; + $self->{'Files'}{$file_id}{'fext'} = $fext; + + return "$full_path/$file_id.$fext"; + } else { + die("Mother::Forker Directory '$full_path' does not exist?!"); + } +} + +sub new_empty_dir { + my $self = $_[0]; + my $options = $_[1]; + my $full_path = $self->_chkncreatedir('dirs'); + if (-d $full_path) { + my $dir_id = genARandom('id'); + if (lc($options->{'name'}) =~ /^([a-z]{1,16})$/) { + $self->{'Dirs'}{$dir_id}{'name'} = $1; + } + mkdir("$full_path/$dir_id") + or die("Mother::Forker Can't create dir '$full_path/$dir_id' ($!)"); + $self->{'Dirs'}{$dir_id}{'path'} = "$full_path/$dir_id"; + BugOUT(9,"Mother::Forker created empty dir '$self->{'Dirs'}{$dir_id}{'path'}'"); + return "$full_path/$dir_id"; + } else { + die("Mother::Forker Directory '$full_path' does not exist?!"); + } +} + + +sub cfg_file_init { + my $self = $_[0]; + my $options = $_[1]; + if ($options->{'blob'}) {# complete blob + BugOUT(9,"Mother::Forker cfg_file_init BLOB"); +# This will be for when you'd want to just supply a whole config file blob +# rather than using the config template functions + die("BLOB CONF Not yet!!"); + } elsif ($options->{'template'}) {# use template + if ((-f $options->{'template'}) and ($options->{'template'} =~ /^\//)) { + BugOUT(9,"Mother::Forker cfg_file_init TEMPLATE: '$options->{'template'}'"); + open(ACNFT,$options->{'template'}); + my ($first_line,@file_content) = <ACNFT>; + close(ACNFT); + if (uc($first_line) =~ /ACNFT\_START/) { + my $cfg_id = genARandom('id'); +# $self->{'cfg_files'}{$cfg_id}{'pdv'} +# my %decvars; + my $var_dec; + ($var_dec,$self->{'cfg_files'}{$cfg_id}{'template'},undef) = split(/\#{6,}\n/,"@file_content"); + foreach my $varline (split(/\n/,$var_dec)) { + $varline =~ s/^\s*//g; + $varline =~ s/\s*$//g; + if ($varline =~ /^(\d)\;([a-z0-9]{1,16})\;([A-Z0-9\_]{3,32})\=(.*)$/) { + $self->{'cfg_files'}{$cfg_id}{'pdv'}{$3}{'value'} = $4; + if ($1 eq 0) { + $self->{'cfg_files'}{$cfg_id}{'pdv'}{$3}{'req'} = 0; + } else { + $self->{'cfg_files'}{$cfg_id}{'pdv'}{$3}{'req'} = 1; + } + + if ($2 eq 0) { + $self->{'cfg_files'}{$cfg_id}{'pdv'}{$3}{'sanitation'} = 0; + } else { +# ADD SOME SANITATION STUFF HERE? + die("Mother::Forker cfg_file_init '$2' is not a valid sanitation rule"); + } + } else { + if (length($varline) > 0) { + warn("Mother::Forker cfg_file_init not a valid vardec: '$varline'"); +# print "NOT A VALID VARDEC LINE?!\n"; + } + } + } +# @file_content = undef;$var_dec = undef; + $self->{'cfg_files'}{$cfg_id}{'file_path'} = $self->new_blank_file({ + _configfile => 1, + create => 0, + }); + $self->_cfg_file_template_prep_vars($cfg_id,$options->{'vars'},1,0); + + if ($options->{'handle_cfg_change'}) { + $self->{'cfg_files'}{$cfg_id}{'handle_cfg_change'} = $options->{'handle_cfg_change'}; + } + + return $cfg_id; + + } else { + die("Mother::Forker '$options->{'template'}' does not appear to be a ACNFT file?!?"); + } + + + + } else { + die("Mother::Forker cfg template must be full path to existing file!"); + } + } else { + die("Mother::Forker cfg file must be either 'blob' or 'template'!"); + } +} + +sub cfg_file_chval {# update existing config file.... maybe trigger some signaling? + my $self = $_[0]; + my $cfg_id = $_[1]; + my $new_confv = $_[2]; + if ($self->{'cfg_files'}{$cfg_id}) { + if (($self->{'cfg_files'}{$cfg_id}{'template'}) and (ref($new_confv) eq "HASH")) { + BugOUT(9,"Mother::Forker cfg_file_chval template style."); + $self->_cfg_file_template_prep_vars($cfg_id,$new_confv,1,1); + } elsif ($self->{'cfg_files'}{$cfg_id}{'blob'}) { + BugOUT(9,"Mother::Forker cfg_file_chval blob style."); + die("Mother::Forke blobs not supportet ATM.. :-("); + } else { + die("Mother::Forker something is probably messed up!"); + } + } else { + warn("Mother::Forker '$cfg_id' is not a valid cfg file id"); + } +# if (reg($new_values) eq "HASH") +#mostly relying on _cfg_file_template_prep_vars for template based files +#conf blobs not a pri at the moment +} + +sub _cfg_file_template_prep_vars { + my $self = $_[0]; + my $cfg_id = $_[1]; + my $in_vars = $_[2]; + my $writefile = $_[3]; + my $trigger_call = $_[4]; + if ($self->{'cfg_files'}{$cfg_id}{'template'}) { + foreach my $inv_key (keys $in_vars) { +# if (length($in_vars->{$inv_key}) > 0) {# need to allow empty values + my $uc_key = uc($inv_key); + if ($self->{'cfg_files'}{$cfg_id}{'pdv'}{$uc_key}) { + if ($self->{'cfg_files'}{$cfg_id}{'pdv'}{$uc_key}{'sanitation'} eq 0) { + unless (($self->{'cfg_files'}{$cfg_id}{'pdv'}{$uc_key}{'req'} eq 1) and (length($in_vars->{$inv_key}) < 1)) { + $self->{'cfg_files'}{$cfg_id}{'pdv'}{$uc_key}{'value'} = $in_vars->{$inv_key}; + } else { + warn("Mother::Forker _cfg_file_template_prep_vars required var '$inv_key' can not be set to empty value!"); + } + } else { +# Insert some santiation functions here at some point? + die("BUT FOR NOW... WE DIE HERE!"); + } + } else { + warn("Mother::Forker invalid cfg var '$inv_key'!"); + } +# }# need to allow empty values + } + + + if (($writefile eq 1) and ($self->{'cfg_files'}{$cfg_id}{'file_path'} =~ /^\//)) { + my $template = $self->{'cfg_files'}{$cfg_id}{'template'}; + foreach my $key (keys $self->{'cfg_files'}{$cfg_id}{'pdv'}) { + if ($template =~ /\$\$ACV\-$key\$\$/) { +# my $value = $decvars{$key}{'value'}; +# print "FOUND MATCH: $1 $value\n"; + unless (($self->{'cfg_files'}{$cfg_id}{'pdv'}{$key}{'req'} eq 1) and (length($self->{'cfg_files'}{$cfg_id}{'pdv'}{$key}{'value'}) < 1)) { + $template =~ s/\$\$ACV\-$key\$\$/$self->{'cfg_files'}{$cfg_id}{'pdv'}{$key}{'value'}/g + } else { + warn("Mother::Forker _cfg_file_template_prep_vars required var '$key' can not be set to empty value!"); + } + + } else { + warn("Mother::Forker _cfg_file_template_prep_vars no match in template for '$key'!"); + } + } + + if ($template =~ /\$\$ACV\-[A-Z0-9\_]{3,32}\$\$/) { + $template =~ s/\$\$ACV\-[A-Z0-9\_]{3,32}\$\$//g; + warn("Mother::Forker _cfg_file_template_prep_vars leftover placeholder(s) in template!"); + } + + open(CFG,">$self->{'cfg_files'}{$cfg_id}{'file_path'}") + or die("Mother::Forker _cfg_file_template_prep_vars UNABLE to write to file '$self->{'cfg_files'}{$cfg_id}{'file_path'}' ($!)"); + foreach my $cfg_line (split(/\n/, $template)) { + $cfg_line =~ s/^\s*//g; + $cfg_line =~ s/\s*$//g; + unless ($cfg_line =~ /^\s*$/) { + print CFG "$cfg_line\n"; + } + } + close(CFG); + + if (($trigger_call eq 1) and ($self->{'cfg_files'}{$cfg_id}{'handle_cfg_change'})) { + $self->{'cfg_files'}{$cfg_id}{'handle_cfg_change'}($cfg_id); + } + } + + } else { + if ($self->{'cfg_files'}{$cfg_id}) { + die("Mother::Forker '$cfg_id' is not a valid cfg_id?!"); + } else { + die("Mother::Forker '$cfg_id' is not a template style cfg file!?!"); + } + } +} + +sub _chkncreatedir { + my $self = $_[0]; + my $subdir = $_[1]; + # Figure out what class this application is and create in appropraite place. + # DONT FORGET TO SET STRICT FILE PERMS (WE GOT A SUB FOR THAT!!) + my $full_path = $arctica_core_object->{'a_dirs'}{'tmp_adir'}; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + + $full_path .= "/foobar";# This is probably where we would want to so something based on application class. + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + + $full_path .= "/$arctica_core_object->{'AExecDeclaration'}{'self_aID'}.apd"; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + + $full_path .= "/children"; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + + $full_path .= "/$self->{'child_aid'}.cld"; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + + if ($subdir eq "files") { + $full_path .= "/files/"; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + } elsif ($subdir eq "dirs") { + $full_path .= "/dirs/"; + unless (-d $full_path) { + mkdir($full_path) or die("Could not create directory: '$full_path' ($!)"); + } + } + + if (-d $full_path) { + return $full_path; + } else { + return 0; + } +} + +#sub _check_n_remove_dir { $self = $_[0];} + + +sub signal { + my $self = $_[0]; + my $signal = uc($_[1]); +# signal the child if its running... +# Obviously we'll do something with "kill" here... +# playing with a few options. + if (($signal =~ /^(\-?[A-Z]*)$/) or ($signal =~ /^(\-?\d*)$/)) { + $signal = $1; + # add some future signal sanitation? + if ($self->{'child_pid'}) { + if (kill(0,$self->{'child_pid'}) and ($self->{'dead'} ne 1)) { + BugOUT(9,"Mother::Forker sending '$signal' to PID#$self->{'child_pid'}"); + kill($signal,$self->{'child_pid'}) + or warn("Mother::Forker unable to signal child PID#$self->{'child_pid'} ($!)"); + } else { + warn("Mother::Forker unable to signal child PID#$self->{'child_pid'} ($self->{'dead'})"); + } + } else { + warn("Mother::Forker NO child PID? So... we're unable to signal child, did it ever run?)"); + } + } else { + die("Mother::Forker signal '$signal' is invalid or not supported."); + } + + +} + +sub ZombieSlayer {# This one may be usefull for external use too... +# usleep(1000);# Give stuff a remote chance of actually being zombified... and if not.... not really a big deal.. + my $zombID = 1; + my $maxCnt = 0;# Just for those unforseen, unlikely events when '$zombID' would never free us from the while loop. + my @zombieList; + while (($zombID > 0) and ($maxCnt < 100)) { + $maxCnt++; + $zombID = waitpid(-1, WNOHANG); + if ($zombID > 0) { + push @zombieList, $zombID; + } + } + return @zombieList; +} + +sub DESTROY { + my $self = $_[0]; + warn("Mother::Forker DESTROY object $self->{'child_id'}"); +} + + +1; |