package Exim::Runtest; use 5.010; use strict; use warnings; use File::Basename; use IO::Socket::INET; use Cwd; use Carp; use Exporter; our @ISA = qw(Exporter); our @EXPORT_OK = qw(mailgroup dynamic_socket exim_binary flavour flavours); our %EXPORT_TAGS = ( all => \@EXPORT_OK, ); use List::Util qw'shuffle'; =head1 NAME Exim::Runtest - helper functions for the runtest script =head1 SYNOPSIS use Exim::Runtest; my $foo = Exim::Runtest::foo('foo'); =head1 DESCRIPTION The B module provides some simple functions for the F script. No functions are exported yet. =cut sub mailgroup { my $group = shift // croak "Need a default group name."; croak "Need a group *name*, not a numeric group id." if $group =~ /^\d+$/; return $group if getgrnam $group; my @groups; setgrent or die "setgrent: $!\n"; push @groups, $_ while defined($_ = getgrent); endgrent; return (shuffle @groups)[0]; } sub dynamic_socket { my $socket; for (my $port = 1024; $port < 65000; $port++) { $socket = IO::Socket::INET->new( LocalHost => '127.0.0.1', LocalPort => $port, Listen => 10, ReuseAddr => 1, ) and return $socket; } croak 'Can not allocate a free port.'; } sub exim_binary { # two simple cases, absolute path or relative path and executable if (@_) { return @_ if $_[0] =~ /^\//; return Cwd::abs_path(shift), @_ if -x $_[0]; } # so we're still here, if the simple approach didn't help. # if there is '../exim-snapshot//exim', use this # if there is '../exim4//exim', use this # if there is '../exim-*.*//exim', use the one with the highest version # 4.84 < 4.85RC1 < 4.85RC2 < 4.85 < 4.86RC1 < … < 4.86 # if there is '../src/', use this # my $prefix = '..'; # was intended for testing. # get a list of directories having the "scripts/{os,arch}-type" # scripts my @candidates = grep { -x "$_/scripts/os-type" and -x "$_/scripts/arch-type" } "$prefix/exim-snapshot", "$prefix/exim4", # highest priority (reverse sort { # list of exim-*.* directories # split version number from RC number my @a = ($a =~ /(\d+\.\d+)(?:RC(\d+))?/); my @b = ($b =~ /(\d+\.\d+)(?:RC(\d+))?/); # if the versions are not equal, we're fine, # but otherwise we've to compare the RC number, where an # empty RC number is better than a non-empty ($a[0] cmp $b[0]) || (defined $a[1] ? defined $b[1] ? $a[1] cmp $b[1] : -1 : 1) } glob "$prefix/exim-*.*"), "$prefix/src"; # the "normal" source # binaries should be found now depending on the os-type and # arch-type in the directories we got above my @binaries = grep { -x } map { ("$_/exim", "$_/exim4") } map { my $os = `$_/scripts/os-type`; my $arch = `$_/scripts/arch-type`; chomp($os, $arch); "$_/build-$os-$arch" . ($ENV{EXIM_BUILD_SUFFIX} ? ".$ENV{EXIM_BUILD_SUFFIX}" : ''); } @candidates; return $binaries[0], @_; } sub flavour { my $etc = '/etc'; if (@_) { croak "do not pass a directory, it's for testing only" unless $ENV{HARNESS_ACTIVE}; $etc = shift; } if (open(my $f, '<', "$etc/os-release")) { local $_ = join '', <$f>; my ($id) = /^ID="?(.*?)"?\s*$/m; my $version = /^VERSION_ID="?(.*?)"?\s*$/m ? $1 : ''; return "$id$version"; } if (open(my $f, '<', "$etc/debian_version")) { chomp(local $_ = <$f>); $_ = int $_; return "debian$_"; } undef; } sub flavours { my %h = map { /\.(\S+)$/, 1 } glob('stdout/*.*'), glob('stderr/*.*'); return sort keys %h; } 1; __END__ =head1 FUNCTIONS =over =item B(I<$default>) Check if the mailgroup I<$default> exists. Return the checked group name or some other random but existing group. =item B() Return a dynamically allocated listener socket in the range between 1024 and 65534; =item ($binary, @argv) = B(I<@argv>) Find the Exim binary. Consider the first element of I<@argv> and remove it from I<@argv>, if it is an executable binary. Otherwise search the binary (while honouring C, C<../scripts/os-type> and C<../os-arch>) and return the the path to the binary and the unmodified I<@argv>. =item B() Find a hint for the current flavour (Linux distro). It does so by checking typical files in the F directory. =item B() Return a list of available flavours. It does so by scanning F and F for I files (extensions after the numerical prefix. =back =cut