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#!/usr/bin/perl
# This file was preprocessed, do not edit!
use warnings;
use strict;
use POSIX;
use Fcntl;
use Getopt::Long;
use Debconf::Client::ConfModule ();
my ($config, $start, $from, $to, $stop);
my $progress=1;
my $dlwaypoint=15;
my ($logfile, $logstderr);
my $had_frontend;
our ($status_read, $status_write);
our ($command_read, $command_write);
our ($debconf_command_read, $debconf_command_write);
our ($debconf_reply_read, $debconf_reply_write);
our $apt_log;
sub checkopen (@) {
my $file = $_[0];
my $fd = POSIX::open($file, &POSIX::O_RDONLY);
defined $fd or die "$0: can't open $file: $!\n";
return $fd;
}
sub checkclose ($) {
my $fd = $_[0];
unless (POSIX::close($fd)) {
return if $! == &POSIX::EBADF;
die "$0: can't close fd $fd: $!\n";
}
}
sub checkdup2 ($$) {
my ($oldfd, $newfd) = @_;
checkclose($newfd);
POSIX::dup2($oldfd, $newfd)
or die "$0: can't dup fd $oldfd to $newfd: $!\n";
}
sub nocloexec ($) {
my $fh = shift;
my $flags = fcntl($fh, F_GETFD, 0);
fcntl($fh, F_SETFD, $flags & ~FD_CLOEXEC);
}
sub nonblock ($) {
my $fh = shift;
my $flags = fcntl($fh, F_GETFL, 0);
fcntl($fh, F_SETFL, $flags | O_NONBLOCK);
}
sub reservefds (@) {
my $null = checkopen('/dev/null');
my $close = 1;
for my $fd (@_) {
if ($null == $fd) {
$close = 0;
} else {
checkclose($fd);
checkdup2($null, $fd);
}
}
if ($close) {
checkclose($null);
}
}
sub envnonempty ($) {
my $name = shift;
return (exists $ENV{$name} and $ENV{$name} ne '');
}
sub start_debconf (@) {
if (! $ENV{DEBIAN_HAS_FRONTEND}) {
if (envnonempty('DEBCONF_DB_REPLACE')) {
$ENV{DEBCONF_APT_PROGRESS_DB_REPLACE} =
$ENV{DEBCONF_DB_REPLACE};
}
if (envnonempty('DEBCONF_DB_OVERRIDE')) {
$ENV{DEBCONF_APT_PROGRESS_DB_OVERRIDE} =
$ENV{DEBCONF_DB_OVERRIDE};
}
$ENV{DEBCONF_DB_REPLACE} = 'configdb';
$ENV{DEBCONF_DB_OVERRIDE} = 'Pipe{infd:none outfd:none}';
$ENV{DEBCONF_APT_PROGRESS_NO_FRONTEND} = 1;
@ARGV = @_;
}
import Debconf::Client::ConfModule;
}
sub passthrough (@) {
my $priority = Debconf::Client::ConfModule::get('debconf/priority');
defined(my $pid = fork) or die "$0: can't fork: $!\n";
if (!$pid) {
close $status_read;
close $command_write;
close $debconf_command_read;
close $debconf_reply_write;
$^F = 6; # avoid close-on-exec
if (fileno($command_read) != 0) {
checkdup2(fileno($command_read), 0);
close $command_read;
}
if (fileno($apt_log) != 1) {
checkclose(1);
checkdup2(fileno($apt_log), 1);
}
if (fileno($apt_log) != 2) {
checkclose(2);
checkdup2(fileno($apt_log), 2);
}
close $apt_log;
delete $ENV{DEBIAN_HAS_FRONTEND};
delete $ENV{DEBCONF_REDIR};
delete $ENV{DEBCONF_SYSTEMRC};
delete $ENV{DEBCONF_PIPE}; # just in case ...
$ENV{DEBIAN_FRONTEND} = 'passthrough';
$ENV{DEBIAN_PRIORITY} = $priority;
$ENV{DEBCONF_READFD} = 5;
$ENV{DEBCONF_WRITEFD} = 6;
$ENV{APT_LISTCHANGES_FRONTEND} = 'none';
if ($had_frontend) {
$ENV{DEBCONF_DB_REPLACE} = 'configdb';
$ENV{DEBCONF_DB_OVERRIDE} = 'Pipe{infd:none outfd:none}';
}
exec @_ or die "can't exec $_[0]: $!";
}
close $status_write;
close $command_read;
close $debconf_command_write;
close $debconf_reply_read;
return $pid;
}
sub handle_status ($$$) {
my ($from, $to, $line) = @_;
my ($status, $pkg, $percent, $description) = split ':', $line, 4;
my ($min, $len);
if ($status eq 'dlstatus') {
$min = 0;
$len = $dlwaypoint;
}
elsif ($status eq 'pmstatus') {
$min = $dlwaypoint;
$len = 100 - $dlwaypoint;
}
elsif ($status eq 'media-change') {
Debconf::Client::ConfModule::subst(
'debconf-apt-progress/media-change', 'MESSAGE',
$description);
my @ret = Debconf::Client::ConfModule::input(
'critical', 'debconf-apt-progress/media-change');
$ret[0] == 0 or die "Can't display media change request!\n";
Debconf::Client::ConfModule::go();
print $command_write "\n" ||
die "can't talk to command fd: $!";
return;
}
else {
return;
}
$percent = ($percent * $len / 100 + $min);
$percent = ($percent * ($to - $from) / 100 + $from);
$percent =~ s/\..*//;
if ($progress) {
my @ret=Debconf::Client::ConfModule::progress('SET', $percent);
if ($ret[0] eq '30') {
cancel();
}
}
Debconf::Client::ConfModule::subst(
'debconf-apt-progress/info', 'DESCRIPTION', $description);
my @ret=Debconf::Client::ConfModule::progress(
'INFO', 'debconf-apt-progress/info');
if ($ret[0] eq '30') {
cancel();
}
}
sub handle_debconf_command ($) {
my $line = shift;
print "$line\n" || die "can't write to stdout: $!";
my $ret = <STDIN>;
chomp $ret;
print $debconf_reply_write "$ret\n" ||
die "can't write to \$debconf_reply_write: $!";
}
my $pid;
sub run_progress ($$@) {
my $from = shift;
my $to = shift;
my $command = shift;
local ($status_read, $status_write);
local ($command_read, $command_write);
local ($debconf_command_read, $debconf_command_write);
local ($debconf_reply_read, $debconf_reply_write);
local $apt_log;
use IO::Handle;
if ($progress) {
my @ret=Debconf::Client::ConfModule::progress(
'INFO', 'debconf-apt-progress/preparing');
if ($ret[0] eq '30') {
cancel();
return 30;
}
}
reservefds(4, 5, 6);
pipe $status_read, $status_write
or die "$0: can't create status pipe: $!";
nonblock($status_read);
checkdup2(fileno($status_write), 4);
open $status_write, '>&=', 4
or die "$0: can't reopen \$status_write as fd 4: $!";
nocloexec($status_write);
pipe $command_read, $command_write
or die "$0: can't create command pipe: $!";
nocloexec($command_read);
$command_write->autoflush(1);
pipe $debconf_command_read, $debconf_command_write
or die "$0: can't create debconf command pipe: $!";
nonblock($debconf_command_read);
checkdup2(fileno($debconf_command_write), 6);
open $debconf_command_write, '>&=', 6
or die "$0: can't reopen \$debconf_command_write as fd 6: $!";
nocloexec($debconf_command_write);
pipe $debconf_reply_read, $debconf_reply_write
or die "$0: can't create debconf reply pipe: $!";
checkdup2(fileno($debconf_reply_read), 5);
open $debconf_reply_read, '<&=', 5
or die "$0: can't reopen \$debconf_reply_read as fd 5: $!";
nocloexec($debconf_reply_read);
$debconf_reply_write->autoflush(1);
if (defined $logfile) {
open $apt_log, '>>', $logfile
or die "$0: can't open $logfile: $!";
} elsif ($logstderr) {
open $apt_log, '>&', \*STDERR
or die "$0: can't duplicate stderr: $!";
} else {
open $apt_log, '>', '/dev/null'
or die "$0: can't open /dev/null: $!";
}
nocloexec($apt_log);
$pid = passthrough $command,
'-o', 'APT::Status-Fd=4',
'-o', 'APT::Keep-Fds::=5',
'-o', 'APT::Keep-Fds::=6',
@_;
my $status_eof = 0;
my $debconf_command_eof = 0;
my $status_buf = '';
my $debconf_command_buf = '';
while (not $status_eof) {
my $rin = '';
my $rout;
vec($rin, fileno($status_read), 1) = 1;
vec($rin, fileno($debconf_command_read), 1) = 1
unless $debconf_command_eof;
my $sel = select($rout = $rin, undef, undef, undef);
if ($sel < 0) {
next if $! == &POSIX::EINTR;
die "$0: select failed: $!";
}
if (vec($rout, fileno($status_read), 1) == 1) {
while (1) {
my $r = sysread($status_read, $status_buf,
4096, length $status_buf);
if (not defined $r) {
next if $! == &POSIX::EINTR;
last if $! == &POSIX::EAGAIN or
$! == &POSIX::EWOULDBLOCK;
die "$0: read \$status_read failed: $!";
}
elsif ($r == 0) {
if ($status_buf ne '' and
$status_buf !~ /\n$/) {
$status_buf .= "\n";
}
$status_eof = 1;
last;
}
last if $status_buf =~ /\n/;
}
while ($status_buf =~ /\n/) {
my $status_line;
($status_line, $status_buf) =
split /\n/, $status_buf, 2;
handle_status $from, $to, $status_line;
}
}
if (vec($rout, fileno($debconf_command_read), 1) == 1) {
while (1) {
my $r = sysread($debconf_command_read,
$debconf_command_buf, 4096,
length $debconf_command_buf);
if (not defined $r) {
next if $! == &POSIX::EINTR;
last if $! == &POSIX::EAGAIN or
$! == &POSIX::EWOULDBLOCK;
die "$0: read " .
"\$debconf_command_read " .
"failed: $!";
}
elsif ($r == 0) {
if ($debconf_command_buf ne '' and
$debconf_command_buf !~ /\n$/) {
$debconf_command_buf .= "\n";
}
$debconf_command_eof = 1;
last;
}
last if $debconf_command_buf =~ /\n/;
}
while ($debconf_command_buf =~ /\n/) {
my $debconf_command_line;
($debconf_command_line, $debconf_command_buf) =
split /\n/, $debconf_command_buf, 2;
handle_debconf_command $debconf_command_line;
}
}
}
waitpid $pid, 0;
undef $pid;
my $status = $?;
if ($progress) {
my @ret=Debconf::Client::ConfModule::progress('SET', $to);
if ($ret[0] eq '30') {
cancel();
}
}
if ($status & 127) {
return 127;
}
return ($status >> 8);
}
my $cancelled=0;
my $cancel_sent_signal=0;
sub cancel () {
$cancelled++;
if (defined $pid) {
$cancel_sent_signal++;
if ($cancel_sent_signal == 1) {
kill INT => $pid;
}
else {
kill KILL => $pid;
}
}
}
sub start_bar ($$) {
my ($from, $to) = @_;
if ($progress) {
Debconf::Client::ConfModule::progress(
'START', $from, $to, 'debconf-apt-progress/title');
my @ret=Debconf::Client::ConfModule::progress(
'INFO', 'debconf-apt-progress/preparing');
if ($ret[0] eq '30') {
cancel();
}
}
}
sub stop_bar () {
Debconf::Client::ConfModule::progress('STOP') if $progress;
Debconf::Client::ConfModule::stop() unless $had_frontend;
}
if (envnonempty('DEBCONF_APT_PROGRESS_DB_REPLACE')) {
$ENV{DEBCONF_DB_REPLACE} = $ENV{DEBCONF_APT_PROGRESS_DB_REPLACE};
} else {
delete $ENV{DEBCONF_DB_REPLACE};
}
if (envnonempty('DEBCONF_APT_PROGRESS_DB_OVERRIDE')) {
$ENV{DEBCONF_DB_OVERRIDE} = $ENV{DEBCONF_APT_PROGRESS_DB_OVERRIDE};
} else {
delete $ENV{DEBCONF_DB_OVERRIDE};
}
$had_frontend = 1 unless $ENV{DEBCONF_APT_PROGRESS_NO_FRONTEND};
delete $ENV{DEBCONF_APT_PROGRESS_NO_FRONTEND}; # avoid inheritance
my @saved_argv = @ARGV;
my $result = GetOptions('config' => \$config,
'start' => \$start,
'from=i' => \$from,
'to=i' => \$to,
'stop' => \$stop,
'logfile=s' => \$logfile,
'logstderr' => \$logstderr,
'progress!' => \$progress,
'dlwaypoint=i' => \$dlwaypoint,
);
if (! $progress && ($start || $from || $to || $stop)) {
die "--no-progress cannot be used with --start, --from, --to, or --stop\n";
}
unless ($start) {
if (defined $from and not defined $to) {
die "$0: --from requires --to\n";
} elsif (defined $to and not defined $from) {
die "$0: --to requires --from\n";
}
}
my $mutex = 0;
++$mutex if $config;
++$mutex if $start;
++$mutex if $stop;
if ($mutex > 1) {
die "$0: must use only one of --config, --start, or --stop\n";
}
if (($config or $stop) and (defined $from or defined $to)) {
die "$0: cannot use --from or --to with --config or --stop\n";
}
start_debconf(@saved_argv) unless $config;
my $status = 0;
if ($config) {
print <<'EOF';
DEBCONF_APT_PROGRESS_DB_REPLACE="$DEBCONF_DB_REPLACE"
DEBCONF_APT_PROGRESS_DB_OVERRIDE="$DEBCONF_DB_OVERRIDE"
export DEBCONF_APT_PROGRESS_DB_REPLACE DEBCONF_APT_PROGRESS_DB_OVERRIDE
DEBCONF_DB_REPLACE=configdb
DEBCONF_DB_OVERRIDE='Pipe{infd:none outfd:none}'
export DEBCONF_DB_REPLACE DEBCONF_DB_OVERRIDE
EOF
} elsif ($start) {
$from = 0 unless defined $from;
$to = 100 unless defined $to;
start_bar($from, $to);
} elsif (defined $from) {
$status = run_progress($from, $to, @ARGV);
} elsif ($stop) {
stop_bar();
} else {
start_bar(0, 100);
if (! $cancelled) {
$status = run_progress(0, 100, @ARGV);
stop_bar();
}
}
if ($cancelled) {
Debconf::Client::ConfModule::get("debconf/priority");
exit 30;
}
elsif ($status == 30) {
exit 3;
}
else {
exit $status;
}