mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-20 20:10:22 +00:00
e32b649648
Adding extenal-provisoner will help us to test snapshot functionality Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
135 lines
3.1 KiB
Go
135 lines
3.1 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes 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 net
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
)
|
|
|
|
// ParseCIDRs parses a list of cidrs and return error if any is invalid.
|
|
// order is maintained
|
|
func ParseCIDRs(cidrsString []string) ([]*net.IPNet, error) {
|
|
cidrs := make([]*net.IPNet, 0, len(cidrsString))
|
|
for _, cidrString := range cidrsString {
|
|
_, cidr, err := net.ParseCIDR(cidrString)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to parse cidr value:%q with error:%v", cidrString, err)
|
|
}
|
|
cidrs = append(cidrs, cidr)
|
|
}
|
|
return cidrs, nil
|
|
}
|
|
|
|
// IsDualStackIPs returns if a slice of ips is:
|
|
// - all are valid ips
|
|
// - at least one ip from each family (v4 or v6)
|
|
func IsDualStackIPs(ips []net.IP) (bool, error) {
|
|
v4Found := false
|
|
v6Found := false
|
|
for _, ip := range ips {
|
|
if ip == nil {
|
|
return false, fmt.Errorf("ip %v is invalid", ip)
|
|
}
|
|
|
|
if v4Found && v6Found {
|
|
continue
|
|
}
|
|
|
|
if IsIPv6(ip) {
|
|
v6Found = true
|
|
continue
|
|
}
|
|
|
|
v4Found = true
|
|
}
|
|
|
|
return (v4Found && v6Found), nil
|
|
}
|
|
|
|
// IsDualStackIPStrings returns if
|
|
// - all are valid ips
|
|
// - at least one ip from each family (v4 or v6)
|
|
func IsDualStackIPStrings(ips []string) (bool, error) {
|
|
parsedIPs := make([]net.IP, 0, len(ips))
|
|
for _, ip := range ips {
|
|
parsedIP := net.ParseIP(ip)
|
|
parsedIPs = append(parsedIPs, parsedIP)
|
|
}
|
|
return IsDualStackIPs(parsedIPs)
|
|
}
|
|
|
|
// IsDualStackCIDRs returns if
|
|
// - all are valid cidrs
|
|
// - at least one cidr from each family (v4 or v6)
|
|
func IsDualStackCIDRs(cidrs []*net.IPNet) (bool, error) {
|
|
v4Found := false
|
|
v6Found := false
|
|
for _, cidr := range cidrs {
|
|
if cidr == nil {
|
|
return false, fmt.Errorf("cidr %v is invalid", cidr)
|
|
}
|
|
|
|
if v4Found && v6Found {
|
|
continue
|
|
}
|
|
|
|
if IsIPv6(cidr.IP) {
|
|
v6Found = true
|
|
continue
|
|
}
|
|
v4Found = true
|
|
}
|
|
|
|
return v4Found && v6Found, nil
|
|
}
|
|
|
|
// IsDualStackCIDRStrings returns if
|
|
// - all are valid cidrs
|
|
// - at least one cidr from each family (v4 or v6)
|
|
func IsDualStackCIDRStrings(cidrs []string) (bool, error) {
|
|
parsedCIDRs, err := ParseCIDRs(cidrs)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return IsDualStackCIDRs(parsedCIDRs)
|
|
}
|
|
|
|
// IsIPv6 returns if netIP is IPv6.
|
|
func IsIPv6(netIP net.IP) bool {
|
|
return netIP != nil && netIP.To4() == nil
|
|
}
|
|
|
|
// IsIPv6String returns if ip is IPv6.
|
|
func IsIPv6String(ip string) bool {
|
|
netIP := net.ParseIP(ip)
|
|
return IsIPv6(netIP)
|
|
}
|
|
|
|
// IsIPv6CIDRString returns if cidr is IPv6.
|
|
// This assumes cidr is a valid CIDR.
|
|
func IsIPv6CIDRString(cidr string) bool {
|
|
ip, _, _ := net.ParseCIDR(cidr)
|
|
return IsIPv6(ip)
|
|
}
|
|
|
|
// IsIPv6CIDR returns if a cidr is ipv6
|
|
func IsIPv6CIDR(cidr *net.IPNet) bool {
|
|
ip := cidr.IP
|
|
return IsIPv6(ip)
|
|
}
|