use Digest::SHA;
use Text::ParseWords;
use String::ShellQuote;
-use Time::HiRes qw(usleep gettimeofday tv_interval);
+use Time::HiRes qw(usleep gettimeofday tv_interval alarm);
# avoid warning when parsing long hex values with hex()
no warnings 'portable'; # Support for 64-bit ints required
die "got timeout\n" if $timeout <= 0;
- my $prev_alarm;
+ my $prev_alarm = alarm 0; # suspend outer alarm early
my $sigcount = 0;
my $res;
- local $SIG{ALRM} = sub { $sigcount++; }; # catch alarm outside eval
-
eval {
local $SIG{ALRM} = sub { $sigcount++; die "got timeout\n"; };
local $SIG{PIPE} = sub { $sigcount++; die "broken pipe\n" };
local $SIG{__DIE__}; # see SA bug 4631
- $prev_alarm = alarm($timeout);
+ alarm($timeout);
- $res = &$code(@param);
+ eval { $res = &$code(@param); };
alarm(0); # avoid race conditions
+
+ die $@ if $@;
};
my $err = $@;
- alarm($prev_alarm) if defined($prev_alarm);
+ alarm $prev_alarm;
+ # this shouldn't happen anymore?
die "unknown error" if $sigcount && !$err; # seems to happen sometimes
die $err if $err;
return $input;
}
+# The $cmd parameter can be:
+# -) a string
+# This is generally executed by passing it to the shell with the -c option.
+# However, it can be executed in one of two ways, depending on whether
+# there's a pipe involved:
+# *) with pipe: passed explicitly to bash -c, prefixed with:
+# set -o pipefail &&
+# *) without a pipe: passed to perl's open3 which uses 'sh -c'
+# (Note that this may result in two different syntax requirements!)
+# FIXME?
+# -) an array of arguments (strings)
+# Will be executed without interference from a shell. (Parameters are passed
+# as is, no escape sequences of strings will be touched.)
sub run_command {
my ($cmd, %param) = @_;
if (!ref($cmd)) {
$cmdstr = $cmd;
- if ($cmd =~ m/|/) {
+ if ($cmd =~ m/\|/) {
# see 'man bash' for option pipefail
$cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmd" ];
} else {
}
sub next_unused_port {
- my ($range_start, $range_end) = @_;
+ my ($range_start, $range_end, $family) = @_;
# We use a file to register allocated ports.
# Those registrations expires after $expiretime.
next if $ports->{$p}; # reserved
my $sock = IO::Socket::IP->new(Listen => 5,
- LocalAddr => '0.0.0.0',
LocalPort => $p,
ReuseAddr => 1,
- Proto => 0);
+ Family => $family,
+ Proto => 0,
+ GetAddrInfoFlags => 0);
if ($sock) {
close($sock);
}
sub next_migrate_port {
- return next_unused_port(60000, 60050);
+ my ($family) = @_;
+ return next_unused_port(60000, 60050, $family);
}
sub next_vnc_port {
- return next_unused_port(5900, 6000);
+ my ($family) = @_;
+ return next_unused_port(5900, 6000, $family);
}
sub next_spice_port {
- return next_unused_port(61000, 61099);
+ my ($family) = @_;
+ return next_unused_port(61000, 61099, $family);
}
# NOTE: NFS syscall can't be interrupted, so alarm does
return ($count, $lines);
}
+sub dump_journal {
+ my ($start, $limit, $filter) = @_;
+
+ my $lines = [];
+ my $count = 0;
+
+ $start = 0 if !$start;
+ $limit = 50 if !$limit;
+
+ my $parser = sub {
+ my $line = shift;
+
+ return if $count++ < $start;
+ return if $limit <= 0;
+ push @$lines, { n => int($count), t => $line};
+ $limit--;
+ };
+
+ my $cmd = ['journalctl', '-o', 'short', '--no-pager'];
+ run_command($cmd, outfunc => $parser);
+
+ # HACK: ExtJS store.guaranteeRange() does not like empty array
+ # so we add a line
+ if (!$count) {
+ $count++;
+ push @$lines, { n => $count, t => "no content"};
+ }
+
+ return ($count, $lines);
+}
+
sub dir_glob_regex {
my ($dir, $regex) = @_;
return ($family, $port, $host);
}
-sub get_host_address_family {
- my ($hostname, $socktype) = @_;
+sub getaddrinfo_all {
+ my ($hostname, @opts) = @_;
my %hints = ( flags => AI_V4MAPPED | AI_ALL,
- socktype => $socktype );
+ @opts );
my ($err, @res) = Socket::getaddrinfo($hostname, '0', \%hints);
- die "failed to resolve $hostname: $err\n" if $err;
+ die "failed to get address info for: $hostname: $err\n" if $err;
+ return @res;
+}
+
+sub get_host_address_family {
+ my ($hostname, $socktype) = @_;
+ my @res = getaddrinfo_all($hostname, socktype => $socktype);
+ return $res[0]->{family};
+}
- return ${res[0]}->{family};
+# Parses any sane kind of host, or host+port pair:
+# The port is always optional and thus may be undef.
+sub parse_host_and_port {
+ my ($address) = @_;
+ if ($address =~ /^($IPV4RE|[[:alnum:]\-.]+)(?::(\d+))?$/ || # ipv4 or host with optional ':port'
+ $address =~ /^\[($IPV6RE|$IPV4RE|[[:alnum:]\-.]+)\](?::(\d+))?$/ || # anything in brackets with optional ':port'
+ $address =~ /^($IPV6RE)(?:\.(\d+))?$/) # ipv6 with optional port separated by dot
+ {
+ return ($1, $2, 1); # end with 1 to support simple if(parse...) tests
+ }
+ return; # nothing
}
1;