use File::Basename;
use IO::Socket::IP;
+use JSON;
use Net::IP;
+use NetAddr::IP qw(:lower);
use POSIX qw(ECONNREFUSED);
use Socket qw(NI_NUMERICHOST NI_NUMERICSERV);
# host network related utility functions
-our $PHYSICAL_NIC_RE = qr/(?:eth\d+|en[^:.]+|ib\d+)/;
+our $PHYSICAL_NIC_RE = qr/(?:eth\d+|en[^:.]+|ib[^:.]+)/;
our $ipv4_reverse_mask = [
'0.0.0.0',
return $overlap == $Net::IP::IP_B_IN_A_OVERLAP || $overlap == $Net::IP::IP_IDENTICAL;
}
+# get all currently configured addresses that have a global scope, i.e., are reachable from the
+# outside of the host and thus are neither loopback nor link-local ones
+# returns an array ref of: { addr => "IP", cidr => "IP/PREFIXLEN", family => "inet|inet6" }
+sub get_reachable_networks {
+ my $raw = '';
+ run_command([qw(ip -j addr show up scope global)], outfunc => sub { $raw .= shift });
+ my $decoded = decode_json($raw);
+
+ my $addrs = []; # filter/transform first so that we can sort correctly more easily below
+ for my $e ($decoded->@*) {
+ next if !$e->{addr_info} || grep { $_ eq 'LOOPBACK' } $e->{flags}->@*;
+ push $addrs->@*, grep { scalar(keys $_->%*) } $e->{addr_info}->@*
+ }
+ my $res = [];
+ for my $info (sort { $a->{family} cmp $b->{family} || $a->{local} cmp $b->{local} } $addrs->@*) {
+ push $res->@*, {
+ addr => $info->{local},
+ cidr => "$info->{local}/$info->{prefixlen}",
+ family => $info->{family},
+ };
+ }
+
+ return $res;
+}
+
+# get one or all local IPs that are not loopback ones, able to pick up the following ones (in order)
+# - the hostname primary resolves too, follows gai.conf (admin controlled) and will be prioritised
+# - all configured in the interfaces configuration
+# - all currently networks known to the kernel in the current (root) namespace
+# returns a single address if no parameter is passed, and all found, grouped by type, if `all => 1`
+# is passed.
+sub get_local_ip {
+ my (%param) = @_;
+
+ my $nodename = PVE::INotify::nodename();
+ my $resolved_host = eval { get_ip_from_hostname($nodename) };
+
+ return $resolved_host if defined($resolved_host) && !$param{all};
+
+ my $all = { v4 => {}, v6 => {} }; # hash to avoid duplicates and group by type
+
+ my $ifaces = PVE::INotify::read_file('interfaces', 1)->{data}->{ifaces};
+ for my $if (values $ifaces->%*) {
+ next if $if->{type} eq 'loopback' || (!defined($if->{address}) && !defined($if->{address6}));
+ my ($v4, $v6) = ($if->{address}, $if->{address6});
+
+ return ($v4 // $v6) if !$param{all}; # prefer v4, admin can override $resolved_host via hosts/gai.conf
+
+ $all->{v4}->{$v4} = 1 if defined($v4);
+ $all->{v6}->{$v6} = 1 if defined($v6);
+ }
+
+ my $live = eval { get_reachable_networks() } // [];
+ for my $info ($live->@*) {
+ my $addr = $info->{addr};
+
+ return $addr if !$param{all};
+
+ if ($info->{family} eq 'inet') {
+ $all->{v4}->{$addr} = 1;
+ } else {
+ $all->{v6}->{$addr} = 1;
+ }
+ }
+
+ return undef if !$param{all}; # getting here means no early return above triggered -> no IPs
+
+ my $res = []; # order gai.conf controlled first, then group v4 and v6, simply lexically sorted
+ if ($resolved_host) {
+ push $res->@*, $resolved_host;
+ delete $all->{v4}->{$resolved_host};
+ delete $all->{v6}->{$resolved_host};
+ }
+ push $res->@*, sort { $a cmp $b } keys $all->{v4}->%*;
+ push $res->@*, sort { $a cmp $b } keys $all->{v6}->%*;
+
+ return $res;
+}
sub get_local_ip_from_cidr {
my ($cidr) = @_;
return undef;
}
- my ($ip, $family);
for my $ai (@res) {
- $family = $ai->{family};
- my $tmpip = addr_to_ip($ai->{addr});
- if ($tmpip !~ m/^127\.|^::1$/) {
- $ip = $tmpip;
- last;
+ my $ip = addr_to_ip($ai->{addr});
+ if ($ip !~ m/^127\.|^::1$/) {
+ return wantarray ? ($ip, $ai->{family}) : $ip;
}
}
- if (!defined($ip) ) {
- die "hostname lookup '$hostname' failed - got local IP address '$ip'\n" if !$noerr;
- return undef;
- }
-
- return wantarray ? ($ip, $family) : $ip;
+ # NOTE: we only get here if no WAN/LAN IP was found, so this is now the error path!
+ die "address lookup for '$hostname' did not find any IP address\n" if !$noerr;
+ return undef;
}
sub lock_network {
return $res;
}
+# the canonical form of the given IP, i.e. dotted quad for IPv4 and RFC 5952 for IPv6
+sub canonical_ip {
+ my ($ip) = @_;
+
+ my $ip_obj = NetAddr::IP->new($ip) or die "invalid IP string '$ip'\n";
+
+ return $ip_obj->canon();
+}
+
+# List of unique, canonical IPs in the provided list.
+# Keeps the original order, filtering later duplicates.
+sub unique_ips {
+ my ($ips) = @_;
+
+ my $res = [];
+ my $seen = {};
+
+ for my $ip (@{$ips}) {
+ $ip = canonical_ip($ip);
+
+ next if $seen->{$ip};
+
+ $seen->{$ip} = 1;
+ push @{$res}, $ip;
+ }
+
+ return $res;
+}
+
1;
projects / pve-common.git / blobdiff