use libnetwork from c/common

The libpod/network packages were moved to c/common so that buildah can
use it as well. To prevent duplication use it in podman as well and
remove it from here.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

vendor/github.com/containers/common/libnetwork/util/filters.go

@@ -0,0 +1,80 @@
+package util
+
+import (
+	"strings"
+
+	"github.com/containers/common/libnetwork/types"
+	"github.com/containers/common/pkg/filters"
+	"github.com/containers/common/pkg/util"
+	"github.com/pkg/errors"
+)
+
+func GenerateNetworkFilters(f map[string][]string) ([]types.FilterFunc, error) {
+	filterFuncs := make([]types.FilterFunc, 0, len(f))
+	for key, filterValues := range f {
+		filterFunc, err := createFilterFuncs(key, filterValues)
+		if err != nil {
+			return nil, err
+		}
+		filterFuncs = append(filterFuncs, filterFunc)
+	}
+	return filterFuncs, nil
+}
+
+func createFilterFuncs(key string, filterValues []string) (types.FilterFunc, error) {
+	switch strings.ToLower(key) {
+	case "name":
+		// matches one name, regex allowed
+		return func(net types.Network) bool {
+			return util.StringMatchRegexSlice(net.Name, filterValues)
+		}, nil
+
+	case "driver":
+		// matches network driver
+		return func(net types.Network) bool {
+			return util.StringInSlice(net.Driver, filterValues)
+		}, nil
+
+	case "id":
+		// matches part of one id
+		return func(net types.Network) bool {
+			return util.StringMatchRegexSlice(net.ID, filterValues)
+		}, nil
+
+		// TODO: add dns enabled, internal filter
+	}
+	return createPruneFilterFuncs(key, filterValues)
+}
+
+func GenerateNetworkPruneFilters(f map[string][]string) ([]types.FilterFunc, error) {
+	filterFuncs := make([]types.FilterFunc, 0, len(f))
+	for key, filterValues := range f {
+		filterFunc, err := createPruneFilterFuncs(key, filterValues)
+		if err != nil {
+			return nil, err
+		}
+		filterFuncs = append(filterFuncs, filterFunc)
+	}
+	return filterFuncs, nil
+}
+
+func createPruneFilterFuncs(key string, filterValues []string) (types.FilterFunc, error) {
+	switch strings.ToLower(key) {
+	case "label":
+		// matches all labels
+		return func(net types.Network) bool {
+			return filters.MatchLabelFilters(filterValues, net.Labels)
+		}, nil
+
+	case "until":
+		until, err := filters.ComputeUntilTimestamp(filterValues)
+		if err != nil {
+			return nil, err
+		}
+		return func(net types.Network) bool {
+			return net.Created.Before(until)
+		}, nil
+	default:
+		return nil, errors.Errorf("invalid filter %q", key)
+	}
+}

vendor/github.com/containers/common/libnetwork/util/ip.go

@@ -0,0 +1,56 @@
+package util
+
+import (
+	"net"
+)
+
+// IsIPv6 returns true if netIP is IPv6.
+func IsIPv6(netIP net.IP) bool {
+	return netIP != nil && netIP.To4() == nil
+}
+
+// IsIPv4 returns true if netIP is IPv4.
+func IsIPv4(netIP net.IP) bool {
+	return netIP != nil && netIP.To4() != nil
+}
+
+// LastIPInSubnet gets the last IP in a subnet
+func LastIPInSubnet(addr *net.IPNet) (net.IP, error) { //nolint:interfacer
+	// re-parse to ensure clean network address
+	_, cidr, err := net.ParseCIDR(addr.String())
+	if err != nil {
+		return nil, err
+	}
+
+	ones, bits := cidr.Mask.Size()
+	if ones == bits {
+		return cidr.IP, nil
+	}
+	for i := range cidr.IP {
+		cidr.IP[i] |= ^cidr.Mask[i]
+	}
+	return cidr.IP, nil
+}
+
+// FirstIPInSubnet gets the first IP in a subnet
+func FirstIPInSubnet(addr *net.IPNet) (net.IP, error) { //nolint:interfacer
+	// re-parse to ensure clean network address
+	_, cidr, err := net.ParseCIDR(addr.String())
+	if err != nil {
+		return nil, err
+	}
+	ones, bits := cidr.Mask.Size()
+	if ones == bits {
+		return cidr.IP, nil
+	}
+	cidr.IP[len(cidr.IP)-1]++
+	return cidr.IP, nil
+}
+
+// NormalizeIP will transform the given ip to the 4 byte len ipv4 if possible
+func NormalizeIP(ip *net.IP) {
+	ipv4 := ip.To4()
+	if ipv4 != nil {
+		*ip = ipv4
+	}
+}

vendor/github.com/containers/common/libnetwork/util/ip_calc.go

@@ -0,0 +1,53 @@
+// Copyright 2015 CNI authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"math/big"
+	"net"
+)
+
+// NextIP returns IP incremented by 1
+func NextIP(ip net.IP) net.IP {
+	i := ipToInt(ip)
+	return intToIP(i.Add(i, big.NewInt(1)))
+}
+
+// PrevIP returns IP decremented by 1
+func PrevIP(ip net.IP) net.IP {
+	i := ipToInt(ip)
+	return intToIP(i.Sub(i, big.NewInt(1)))
+}
+
+// Cmp compares two IPs, returning the usual ordering:
+// a < b : -1
+// a == b : 0
+// a > b : 1
+func Cmp(a, b net.IP) int {
+	aa := ipToInt(a)
+	bb := ipToInt(b)
+	return aa.Cmp(bb)
+}
+
+func ipToInt(ip net.IP) *big.Int {
+	if v := ip.To4(); v != nil {
+		return big.NewInt(0).SetBytes(v)
+	}
+	return big.NewInt(0).SetBytes(ip.To16())
+}
+
+func intToIP(i *big.Int) net.IP {
+	return net.IP(i.Bytes())
+}