Current File : //usr/share/perl5/Debconf/ConfModule.pm
#!/usr/bin/perl -w
# This file was preprocessed, do not edit!
package Debconf::ConfModule;
use strict;
use IPC::Open2;
use FileHandle;
use Debconf::Gettext;
use Debconf::Config;
use Debconf::Question;
use Debconf::Priority qw(priority_valid high_enough);
use Debconf::FrontEnd::Noninteractive;
use Debconf::Log ':all';
use Debconf::Encoding;
use base qw(Debconf::Base);
my %codes = (
success => 0,
escaped_data => 1,
badparams => 10,
syntaxerror => 20,
input_invisible => 30,
version_bad => 30,
go_back => 30,
progresscancel => 30,
internalerror => 100,
);
sub init {
my $this=shift;
$this->version("2.0");
$this->owner('unknown') if ! defined $this->owner;
$this->frontend->capb_backup('');
$this->seen([]);
$this->busy([]);
$ENV{DEBIAN_HAS_FRONTEND}=1;
}
sub startup {
my $this=shift;
my $confmodule=shift;
$this->frontend->clear;
$this->busy([]);
my @args=$this->confmodule($confmodule);
push @args, @_ if @_;
debug developer => "starting ".join(' ',@args);
$this->pid(open2($this->read_handle(FileHandle->new),
$this->write_handle(FileHandle->new),
@args)) || die $!;
$this->caught_sigpipe('');
$SIG{PIPE}=sub { $this->caught_sigpipe(128) };
}
sub communicate {
my $this=shift;
my $r=$this->read_handle;
$_=<$r> || return $this->finish;
chomp;
my $ret=$this->process_command($_);
my $w=$this->write_handle;
print $w $ret."\n";
return '' unless length $ret;
return 1;
}
sub escape {
my $text=shift;
$text=~s/\\/\\\\/g;
$text=~s/\n/\\n/g;
return $text;
}
sub unescape_split {
my $text=shift;
my @words;
my $word='';
for my $chunk (split /(\\.|\s+)/, $text) {
if ($chunk eq '\n') {
$word.="\n";
} elsif ($chunk=~/^\\(.)$/) {
$word.=$1;
} elsif ($chunk=~/^\s+$/) {
push @words, $word;
$word='';
} else {
$word.=$chunk;
}
}
push @words, $word if $word ne '';
return @words;
}
sub process_command {
my $this=shift;
debug developer => "<-- $_";
chomp;
my ($command, @params);
if (defined $this->client_capb and grep { $_ eq 'escape' } @{$this->client_capb}) {
($command, @params)=unescape_split($_);
} else {
($command, @params)=split(' ', $_);
}
if (! defined $command) {
return $codes{syntaxerror}.' '.
"Bad line \"$_\" received from confmodule.";
}
$command=lc($command);
if (lc($command) eq "stop") {
return $this->finish;
}
if (! $this->can("command_$command")) {
return $codes{syntaxerror}.' '.
"Unsupported command \"$command\" (full line was \"$_\") received from confmodule.";
}
$command="command_$command";
my $ret=join(' ', $this->$command(@params));
debug developer => "--> $ret";
if ($ret=~/\n/) {
debug developer => 'Warning: return value is multiline, and would break the debconf protocol. Truncating to first line.';
$ret=~s/\n.*//s;
debug developer => "--> $ret";
}
return $ret;
}
sub finish {
my $this=shift;
waitpid $this->pid, 0 if defined $this->pid;
$this->exitcode($this->caught_sigpipe || ($? >> 8));
$SIG{PIPE} = sub {};
foreach (@{$this->seen}) {
my $q=Debconf::Question->get($_->name);
$_->flag('seen', 'true') if $q;
}
$this->seen([]);
return '';
}
sub command_input {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 2;
my $priority=shift;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "\"$question_name\" doesn't exist";
if (! priority_valid($priority)) {
return $codes{syntaxerror}, "\"$priority\" is not a valid priority";
}
$question->priority($priority);
my $visible=1;
if ($question->type ne 'error') {
$visible='' unless high_enough($priority);
$visible='' if ! Debconf::Config->reshow &&
$question->flag('seen') eq 'true';
}
my $markseen=$visible;
if ($visible && ! $this->frontend->interactive) {
$visible='';
$markseen='' unless Debconf::Config->noninteractive_seen eq 'true';
}
my $element;
if ($visible) {
$element=$this->frontend->makeelement($question);
unless ($element) {
return $codes{internalerror},
"unable to make an input element";
}
$visible=$element->visible;
}
if (! $visible) {
$element=Debconf::FrontEnd::Noninteractive->makeelement($question, 1);
return $codes{input_invisible}, "question skipped" unless $element;
}
$element->markseen($markseen);
push @{$this->busy}, $question_name;
$this->frontend->add($element);
if ($element->visible) {
return $codes{success}, "question will be asked";
}
else {
return $codes{input_invisible}, "question skipped";
}
}
sub command_clear {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 0;
$this->frontend->clear;
$this->busy([]);
return $codes{success};
}
sub command_version {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ > 1;
my $version=shift;
if (defined $version) {
return $codes{version_bad}, "Version too low ($version)"
if int($version) < int($this->version);
return $codes{version_bad}, "Version too high ($version)"
if int($version) > int($this->version);
}
return $codes{success}, $this->version;
}
sub command_capb {
my $this=shift;
$this->client_capb([@_]);
if (grep { $_ eq 'backup' } @_) {
$this->frontend->capb_backup(1);
} else {
$this->frontend->capb_backup('');
}
my @capb=('multiselect', 'escape');
push @capb, $this->frontend->capb;
return $codes{success}, @capb;
}
sub command_title {
my $this=shift;
$this->frontend->title(join ' ', @_);
$this->frontend->requested_title($this->frontend->title);
return $codes{success};
}
sub command_settitle {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "\"$question_name\" doesn't exist";
if ($this->frontend->can('settitle')) {
$this->frontend->settitle($question);
} else {
$this->frontend->title($question->description);
}
$this->frontend->requested_title($this->frontend->title);
return $codes{success};
}
sub command_beginblock {
return $codes{success};
}
sub command_endblock {
return $codes{success};
}
sub command_go {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ > 0;
my $ret=$this->frontend->go;
if ($ret && (! $this->backed_up ||
grep { $_->visible } @{$this->frontend->elements})) {
foreach (@{$this->frontend->elements}) {
$_->question->value($_->value);
push @{$this->seen}, $_->question if $_->markseen && $_->question;
}
$this->frontend->clear;
$this->busy([]);
$this->backed_up('');
return $codes{success}, "ok"
}
else {
$this->frontend->clear;
$this->busy([]);
$this->backed_up(1);
return $codes{go_back}, "backup";
}
}
sub command_get {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
my $value=$question->value;
if (defined $value) {
if (defined $this->client_capb and grep { $_ eq 'escape' } @{$this->client_capb}) {
return $codes{escaped_data}, escape($value);
} else {
return $codes{success}, $value;
}
}
else {
return $codes{success}, '';
}
}
sub command_set {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 1;
my $question_name=shift;
my $value=join(" ", @_);
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
$question->value($value);
return $codes{success}, "value set";
}
sub command_reset {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
$question->value($question->default);
$question->flag('seen', 'false');
return $codes{success};
}
sub command_subst {
my $this = shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 2;
my $question_name = shift;
my $variable = shift;
my $value = (join ' ', @_);
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
my $result=$question->variable($variable,$value);
return $codes{internalerror}, "Substitution failed" unless defined $result;
return $codes{success};
}
sub command_register {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 2;
my $template=shift;
my $name=shift;
my $tempobj = Debconf::Question->get($template);
if (! $tempobj) {
return $codes{badparams}, "No such template, \"$template\"";
}
my $question=Debconf::Question->get($name) ||
Debconf::Question->new($name, $this->owner, $tempobj->type);
if (! $question) {
return $codes{internalerror}, "Internal error making question";
}
if (! defined $question->addowner($this->owner, $tempobj->type)) {
return $codes{internalerror}, "Internal error adding owner";
}
if (! $question->template($template)) {
return $codes{internalerror}, "Internal error setting template";
}
return $codes{success};
}
sub command_unregister {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $name=shift;
my $question=Debconf::Question->get($name) ||
return $codes{badparams}, "$name doesn't exist";
if (grep { $_ eq $name } @{$this->busy}) {
return $codes{badparams}, "$name is busy, cannot unregister right now";
}
$question->removeowner($this->owner);
return $codes{success};
}
sub command_purge {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ > 0;
my $iterator=Debconf::Question->iterator;
while (my $q=$iterator->iterate) {
$q->removeowner($this->owner);
}
return $codes{success};
}
sub command_metaget {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 2;
my $question_name=shift;
my $field=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
my $lcfield=lc $field;
my $fieldval=$question->$lcfield();
unless (defined $fieldval) {
return $codes{badparams}, "$field does not exist";
}
if (defined $this->client_capb and grep { $_ eq 'escape' } @{$this->client_capb}) {
return $codes{escaped_data}, escape($fieldval);
} else {
return $codes{success}, $fieldval;
}
}
sub command_fget {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 2;
my $question_name=shift;
my $flag=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
return $codes{success}, $question->flag($flag);
}
sub command_fset {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 3;
my $question_name=shift;
my $flag=shift;
my $value=(join ' ', @_);
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
if ($flag eq 'seen') {
$this->seen([grep {$_ ne $question} @{$this->seen}]);
}
return $codes{success}, $question->flag($flag, $value);
}
sub command_info {
my $this=shift;
if (@_ == 0) {
$this->frontend->info(undef);
} elsif (@_ == 1) {
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "\"$question_name\" doesn't exist";
$this->frontend->info($question);
} else {
return $codes{syntaxerror}, "Incorrect number of arguments";
}
return $codes{success};
}
sub command_progress {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 1;
my $subcommand=shift;
$subcommand=lc($subcommand);
my $ret;
if ($subcommand eq 'start') {
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 3;
my $min=shift;
my $max=shift;
my $question_name=shift;
return $codes{syntaxerror}, "min ($min) > max ($max)" if $min > $max;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
$this->frontend->progress_start($min, $max, $question);
$ret=1;
}
elsif ($subcommand eq 'set') {
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $value=shift;
$ret = $this->frontend->progress_set($value);
}
elsif ($subcommand eq 'step') {
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $inc=shift;
$ret = $this->frontend->progress_step($inc);
}
elsif ($subcommand eq 'info') {
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
$ret = $this->frontend->progress_info($question);
}
elsif ($subcommand eq 'stop') {
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 0;
$this->frontend->progress_stop();
$ret=1;
}
else {
return $codes{syntaxerror}, "Unknown subcommand";
}
if ($ret) {
return $codes{success}, "OK";
}
else {
return $codes{progresscancel}, "CANCELED";
}
}
sub command_data {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 3;
my $template=shift;
my $item=shift;
my $value=join(' ', @_);
$value=~s/\\([n"\\])/($1 eq 'n') ? "\n" : $1/eg;
my $tempobj=Debconf::Template->get($template);
if (! $tempobj) {
if ($item ne 'type') {
return $codes{badparams}, "Template data field '$item' received before type field";
}
$tempobj=Debconf::Template->new($template, $this->owner, $value);
if (! $tempobj) {
return $codes{internalerror}, "Internal error making template";
}
} else {
if ($item eq 'type') {
return $codes{badparams}, "Template type already set";
}
$tempobj->$item(Debconf::Encoding::convert("UTF-8", $value));
}
return $codes{success};
}
sub command_visible {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 2;
my $priority=shift;
my $question_name=shift;
my $question=Debconf::Question->get($question_name) ||
return $codes{badparams}, "$question_name doesn't exist";
return $codes{success}, $this->frontend->visible($question, $priority) ? "true" : "false";
}
sub command_exist {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ != 1;
my $question_name=shift;
return $codes{success},
Debconf::Question->get($question_name) ? "true" : "false";
}
sub command_x_loadtemplatefile {
my $this=shift;
return $codes{syntaxerror}, "Incorrect number of arguments" if @_ < 1 || @_ > 2;
my $file=shift;
my $fh=FileHandle->new($file);
if (! $fh) {
return $codes{badparams}, "failed to open $file: $!";
}
my $owner=$this->owner;
if (@_) {
$owner=shift;
}
eval {
Debconf::Template->load($fh, $owner);
};
if ($@) {
$@=~s/\n/\\n/g;
return $codes{internalerror}, $@;
}
return $codes{success};
}
sub AUTOLOAD {
(my $field = our $AUTOLOAD) =~ s/.*://;
no strict 'refs';
*$AUTOLOAD = sub {
my $this=shift;
return $this->{$field} unless @_;
return $this->{$field}=shift;
};
goto &$AUTOLOAD;
}
sub DESTROY {
my $this=shift;
$this->read_handle->close if $this->read_handle;
$this->write_handle->close if $this->write_handle;
if (defined $this->pid && $this->pid > 1) {
kill 'TERM', $this->pid;
}
}
1
Mini Shell