prevent the use of AI_ADDRCONFIG

[pve-common.git] / src / PVE / Tools.pm

diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm
index d886a3dd4343b9bf31886d87915b780d82fa9044..1bc9eec6afa857926e62626747318268f4d21ed6 100644 (file)
--- a/src/PVE/Tools.pm
+++ b/src/PVE/Tools.pm
@@ -4,6 +4,7 @@ use strict;
 use warnings;
 use POSIX qw(EINTR);
 use IO::Socket::IP;
+use Socket qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED);
 use IO::Select;
 use File::Basename;
 use File::Path qw(make_path);
@@ -659,7 +660,7 @@ sub wait_for_vnc_port {
 }
 
 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.
@@ -692,10 +693,11 @@ sub next_unused_port {
            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);
@@ -724,15 +726,18 @@ sub next_unused_port {
 }
 
 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 
@@ -1043,4 +1048,27 @@ sub fnv31a {
 
 sub fnv31a_hex { return sprintf("%X", fnv31a(@_)); }
 
+sub unpack_sockaddr_in46 {
+    my ($sin) = @_;
+    my $family = Socket::sockaddr_family($sin);
+    my ($port, $host) = ($family == AF_INET6 ? Socket::unpack_sockaddr_in6($sin)
+                                             : Socket::unpack_sockaddr_in($sin));
+    return ($family, $port, $host);
+}
+
+sub getaddrinfo_all {
+    my ($hostname, @opts) = @_;
+    my %hints = ( flags => AI_V4MAPPED | AI_ALL,
+                  @opts );
+    my ($err, @res) = Socket::getaddrinfo($hostname, '0', \%hints);
+    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};
+}
+
 1;