From 6a40ecf6aec13bf650645d65713c0327c6d8c5e6 Mon Sep 17 00:00:00 2001 From: Guilhem Moulin Date: Tue, 8 Sep 2015 00:17:24 +0200 Subject: Block SIGINT signals to the children for type=tunnel. So we can clean after us (and for instance remove the lockfile). --- lib/Net/IMAP/InterIMAP.pm | 40 +++++++++++++++++++++++++++++++++------- 1 file changed, 33 insertions(+), 7 deletions(-) (limited to 'lib/Net') diff --git a/lib/Net/IMAP/InterIMAP.pm b/lib/Net/IMAP/InterIMAP.pm index 26cfbbd..35d2075 100644 --- a/lib/Net/IMAP/InterIMAP.pm +++ b/lib/Net/IMAP/InterIMAP.pm @@ -24,6 +24,7 @@ use Config::Tiny (); use IO::Select (); use List::Util 'first'; use Socket 'SO_KEEPALIVE'; +use POSIX ':signal_h'; use Exporter 'import'; BEGIN { @@ -225,10 +226,33 @@ sub new($%) { $self->{_STATE} = ''; if ($self->{type} eq 'tunnel') { - require 'IPC/Open2.pm'; my $command = $self->{command} // $self->fail("Missing tunnel command"); - my $pid = IPC::Open2::open2(@$self{qw/STDOUT STDIN/}, $command) - or $self->panic("Can't fork: $!"); + + pipe $self->{STDOUT}, my $wd or $self->panic("Can't pipe: $!"); + pipe my $rd, $self->{STDIN} or $self->panic("Can't pipe: $!"); + + my $pid = fork // $self->panic("Can't fork: $!"); + + unless ($pid) { + # children + foreach (\*STDIN, \*STDOUT, $self->{STDIN}, $self->{STDOUT}) { + close $_ or $self->panic("Can't close: $!"); + } + open STDIN, '<&', $rd or $self->panic("Can't dup: $!"); + open STDOUT, '>&', $wd or $self->panic("Can't dup: $!"); + + my $sigset = POSIX::SigSet::->new(SIGINT); + my $oldsigset = POSIX::SigSet::->new(); + + sigprocmask(SIG_BLOCK, $sigset, $oldsigset) // $self->panic("Can't block SIGINT: $!"); + + exec $command or $self->panic("Can't exec: $!"); + } + + # parent + foreach ($rd, $wd) { + close $_ or $self->panic("Can't close: $!"); + } } else { my %args = (Proto => 'tcp', Blocking => 1); @@ -287,8 +311,8 @@ sub new($%) { # are considered. $self->{_MODIFIED} = {}; - if (defined $self->{'logger-fd'} and $self->{'logger-fd'}->fileno != fileno STDERR) { - require 'POSIX.pm'; + if (defined $self->{'logger-fd'} and defined $self->{'logger-fd'}->fileno + and $self->{'logger-fd'}->fileno != fileno STDERR) { require 'Time/HiRes.pm'; } @@ -400,7 +424,8 @@ sub DESTROY($) { sub log($@) { my $self = shift; return unless @_; - $self->logger(@_) if defined $self->{'logger-fd'} and $self->{'logger-fd'}->fileno != fileno STDERR; + $self->logger(@_) if defined $self->{'logger-fd'} and defined $self->{'logger-fd'}->fileno + and $self->{'logger-fd'}->fileno != fileno STDERR; my $prefix = defined $self->{name} ? $self->{name} : ''; $prefix .= "($self->{_SELECTED})" if $self->{_STATE} eq 'SELECTED'; print STDERR $prefix, ': ', @_, "\n"; @@ -409,7 +434,8 @@ sub logger($@) { my $self = shift; return unless @_ and defined $self->{'logger-fd'}; my $prefix = ''; - if ($self->{'logger-fd'}->fileno != fileno STDERR) { + if (defined $self->{'logger-fd'}->fileno and defined $self->{'logger-fd'}->fileno + and $self->{'logger-fd'}->fileno != fileno STDERR) { my ($s, $us) = Time::HiRes::gettimeofday(); $prefix = POSIX::strftime("%b %e %H:%M:%S", localtime($s)).".$us "; } -- cgit v1.2.3