byp4a55 professor6T9

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167.86.79.110

File Name : Python.pm

# needrestart - Restart daemons after library updates.
#
# Authors:
#   Thomas Liske <thomas@fiasko-nw.net>
#
# Copyright Holder:
#   2013 - 2018 (C) Thomas Liske [http://fiasko-nw.net/~thomas/]
#
# License:
#   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; either version 2 of the License, or
#   (at your option) any later version.
#
#   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 package; if not, write to the Free Software
#   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
#

package NeedRestart::Interp::Python;

use strict;
use warnings;

use parent qw(NeedRestart::Interp);
use Cwd qw(abs_path getcwd);
use Getopt::Std;
use NeedRestart qw(:interp);
use NeedRestart::Utils;

my $LOGPREF = '[Python]';

needrestart_interp_register(__PACKAGE__);

sub isa {
    my $self = shift;
    my $pid = shift;
    my $bin = shift;

return 1 if($bin =~ m@^/usr/(local/)?bin/python([23][.\d]*)?$@);

return 0;
}

sub _scan($$$$$) {
    my $debug = shift;
    my $pid = shift;
    my $src = shift;
    my $files = shift;
    my $path = shift;

my $fh;
    open($fh, '<', $src) || return;
    # find used modules
    my %modules = map {
	(/^\s*import\s+(\S+)/ ? ($1 => 1) : (/^\s*from\s+(\S+)\s+import\s+/ ? ($1 => 1) : ()))
    } <$fh>;
    close($fh);

# track file
    $files->{$src}++;

# scan module files
    if(scalar keys %modules) {
	foreach my $module (keys %modules) {
	    $module =~ s@\.@/@g;
	    $module .= '.py';

foreach my $p (@$path) {
		my $fn = ($p ne '' ? "$p/" : '').$module;
		&_scan($debug, $pid, $fn, $files, $path) if(!exists($files->{$fn}) && -r $fn && -f $fn);
	    }
	}
    }
}

sub source {
    my $self = shift;
    my $pid = shift;
    my $ptable = nr_ptable_pid($pid);
    unless($ptable->{cwd}) {
	print STDERR "$LOGPREF #$pid: could not get current working directory, skipping\n" if($self->{debug});
	return undef;
    }
    my $cwd = getcwd();
    chdir("/proc/$pid/root/$ptable->{cwd}");

# skip the process if the cwd is unreachable (i.e. due to mnt ns)
    unless(getcwd()) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: process cwd is unreachable\n" if($self->{debug});
	return undef;
    }

# get original ARGV
    (my $bin, local @ARGV) = nr_parse_cmd($pid);

# eat Python's command line options
    my %opts;
    {
	local $SIG{__WARN__} = sub { };
	getopts('BdEhim:ORQ:sStuvVW:x3?c:', \%opts);
    }

# skip python -c '...' calls
    if(exists($opts{c})) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: uses no source file (-c), skipping\n" if($self->{debug});
	return undef;
    }

# extract source file
    unless($#ARGV > -1) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: could not get a source file, skipping\n" if($self->{debug});
	return undef;
    }

my $src = abs_path($ARGV[0]);
    chdir($cwd);
    unless(defined($src) && -r $src && -f $src) {
	print STDERR "$LOGPREF #$pid: source file not found, skipping\n" if($self->{debug});
	print STDERR "$LOGPREF #$pid:  reduced ARGV: ".join(' ', @ARGV)."\n" if($self->{debug});
	return undef;
    }

return $src;
}

sub files {
    my $self = shift;
    my $pid = shift;
    my $cache = shift;
    my $ptable = nr_ptable_pid($pid);
    unless($ptable->{cwd}) {
	print STDERR "$LOGPREF #$pid: could not get current working directory, skipping\n" if($self->{debug});
	return ();
    }
    my $cwd = getcwd();
    chdir("/proc/$pid/root/$ptable->{cwd}");

# get original ARGV
    (my $bin, local @ARGV) = nr_parse_cmd($pid);

# eat Python's command line options
    my %opts;
    {
	local $SIG{__WARN__} = sub { };
	getopts('BdEhim:ORQ:sStuvVW:x3?c:', \%opts);
    }

# skip python -c '...' calls
    if(exists($opts{c})) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: uses no source file (-c), skipping\n" if($self->{debug});
	return ();
    }

# extract source file
    unless($#ARGV > -1) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: could not get a source file, skipping\n" if($self->{debug});
	return ();
    }
    my $src = abs_path ($ARGV[0]);
    unless(defined($src) && -r $src && -f $src) {
	chdir($cwd);
	print STDERR "$LOGPREF #$pid: source file not found, skipping\n" if($self->{debug});
	print STDERR "$LOGPREF #$pid:  reduced ARGV: ".join(' ', @ARGV)."\n" if($self->{debug});
	return ();
    }
    print STDERR "$LOGPREF #$pid: source=$src\n" if($self->{debug});

# use cached data if avail
    if(exists($cache->{files}->{(__PACKAGE__)}->{$src})) {
	print STDERR "$LOGPREF #$pid: use cached file list\n" if($self->{debug});
	return %{ $cache->{files}->{(__PACKAGE__)}->{$src} };
    }

# prepare include path environment variable
    my %e = nr_parse_env($pid);
    local %ENV;
    if(exists($e{PYTHONPATH})) {
	$ENV{PYTHONPATH} = $e{PYTHONPATH};
    }
    elsif(exists($ENV{PYTHONPATH})) {
	delete($ENV{PYTHONPATH});
    }
    
    # get include path
    my ($pyread, $pywrite) = nr_fork_pipe2($self->{debug}, $ptable->{exec}, '-');
    print $pywrite "import sys\nprint(sys.path)\n";
    close($pywrite);
    my ($path) = <$pyread>;
    close($pyread);
    
    # look for module source files
    my @path;
    if(defined($path)) {
	chomp($path);
	$path =~ s/^\['//;
	$path =~ s/'\$//;
	@path = map { "/proc/$pid/root/$_"; } split("', '", $path);
    }
    else {
	print STDERR "$LOGPREF #$pid: failed to retrieve include path\n" if($self->{debug});
    }
    
    my %files;
    _scan($self->{debug}, $pid, $src, \%files, \@path);

my %ret = map {
	my $stat = nr_stat("/proc/$pid/root/$_");
	$_ => ( defined($stat) ? $stat->{ctime} : undef );
    } keys %files;

chdir($cwd);

$cache->{files}->{(__PACKAGE__)}->{$src} = \%ret;
    return %ret;
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2022-11-29 07:09:00
..	dir	-	root/root	0755	2022-11-29 07:09:00
Java.pm	text/plain	1.63 KB	root/root	0644	2019-02-05 09:35:46
Perl.pm	text/plain	5.27 KB	root/root	0644	2022-05-16 11:12:48
Python.pm	text/plain	6.16 KB	root/root	0644	2022-05-16 11:12:48
Ruby.pm	text/plain	5.77 KB	root/root	0644	2022-05-16 11:12:48

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