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lib/AnyEvent/Sway.pm  view on Meta::CPAN

package AnyEvent::Sway;
# vim:ts=4:sw=4:expandtab

use strict;
use warnings;
use JSON::XS;
use AnyEvent::Handle;
use AnyEvent::Socket;
use AnyEvent;
use Encode;
use Scalar::Util qw(tainted);
use Carp;

=head1 NAME

AnyEvent::Sway - communicate with the Sway window manager

=cut

our $VERSION = '0.18';

lib/AnyEvent/Sway.pm  view on Meta::CPAN

    shutdown => ($event_mask | 6),
    tick => ($event_mask | 7),
    _error => 0xFFFFFFFF,
);

sub sway
{
    AnyEvent::Sway->new(@_)
}

# Calls Sway, even when running in taint mode.
sub _call_sway
{
    my ($args) = @_;

    my $path_tainted = tainted($ENV{PATH});
    # This effectively circumvents taint mode checking for $ENV{PATH}. We
    # do this because users might specify PATH explicitly to call Sway in a
    # custom location (think ~/.bin/).
    (local $ENV{PATH}) = ($ENV{PATH} =~ /(.*)/);

    # In taint mode, we also need to remove all relative directories from
    # PATH (like . or ../bin). We only do this in taint mode and warn the
    # user, since this might break a real-world use case for some people.
    if ($path_tainted) {
        my @dirs = split /:/, $ENV{PATH};
        my @filtered = grep !/^\./, @dirs;
        if (scalar @dirs != scalar @filtered) {
            $ENV{PATH} = join ':', @filtered;
            warn qq|Removed relative directories from PATH because you | .
                 qq|are running Perl with taint mode enabled. Remove -T | .
                 qq|to be able to use relative directories in PATH. | .
                 qq|New PATH is "$ENV{PATH}"|;
        }
    }
    # Otherwise the qx() operator wont work:
    delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
    chomp(my $result = qx(sway $args));
    # Circumventing taint mode again: the socket can be anywhere on the
    # system and that’s okay.
    if ($result =~ /^([^\0]+)$/) {
        return $1;
    }

    warn "Calling sway $args failed. Is DISPLAY set and is sway in your PATH?";
    return undef;
}

=head2 $sway = AnyEvent::Sway->new([ $path ])

lib/AnyEvent/Sway.pm  view on Meta::CPAN

    my ($class, $path) = @_;

    $path = _call_sway('--get-socketpath') unless $path;

    # This is the old default path (v3.*). This fallback line can be removed in
    # a year from now. -- Michael, 2012-07-09
    $path ||= '~/.sway/ipc.sock';

    # Check if we need to resolve ~
    if ($path =~ /~/) {
        # We use getpwuid() instead of $ENV{HOME} because the latter is tainted
        # and thus produces warnings when running tests with perl -T
        my $home = (getpwuid($<))[7];
        confess "Could not get home directory" unless $home and -d $home;
        $path =~ s/~/$home/g;
    }

    bless { path => $path } => $class;
}

=head2 $sway->connect