provider/google: Validate VPN tunnel peer_ip
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bcf1bca564
commit
23af84ca09
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@ -1,8 +1,10 @@
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package google
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import (
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"bytes"
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"fmt"
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"log"
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"net"
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"github.com/hashicorp/terraform/helper/schema"
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@ -38,6 +40,7 @@ func resourceComputeVpnTunnel() *schema.Resource {
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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ValidateFunc: validatePeerAddr,
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},
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"shared_secret": &schema.Schema{
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Type: schema.TypeString,
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@ -177,3 +180,89 @@ func resourceComputeVpnTunnelDelete(d *schema.ResourceData, meta interface{}) er
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return nil
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}
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// validatePeerAddr returns false if a tunnel's peer_ip property
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// is invalid. Currently, only addresses that collide with RFC
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// 5735 (https://tools.ietf.org/html/rfc5735) fail validation.
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func validatePeerAddr(i interface{}, val string) ([]string, []error) {
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ip := net.ParseIP(i.(string))
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if ip == nil {
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return nil, []error{fmt.Errorf("could not parse %q to IP address", val)}
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}
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for _, test := range invalidPeerAddrs {
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if bytes.Compare(ip, test.from) >= 0 && bytes.Compare(ip, test.to) <= 0 {
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return nil, []error{fmt.Errorf("address is invalid (is between %q and %q, conflicting with RFC5735)", test.from, test.to)}
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}
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}
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return nil, nil
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}
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// invalidPeerAddrs is a collection of IP addres ranges that represent
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// a conflict with RFC 5735 (https://tools.ietf.org/html/rfc5735#page-3).
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// CIDR range notations in the RFC were converted to a (from, to) pair
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// for easy checking with bytes.Compare.
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var invalidPeerAddrs = []struct {
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from net.IP
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to net.IP
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}{
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{
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from: net.ParseIP("0.0.0.0"),
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to: net.ParseIP("0.255.255.255"),
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},
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{
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from: net.ParseIP("10.0.0.0"),
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to: net.ParseIP("10.255.255.255"),
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},
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{
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from: net.ParseIP("127.0.0.0"),
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to: net.ParseIP("127.255.255.255"),
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},
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{
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from: net.ParseIP("169.254.0.0"),
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to: net.ParseIP("169.254.255.255"),
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},
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{
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from: net.ParseIP("172.16.0.0"),
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to: net.ParseIP("172.31.255.255"),
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},
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{
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from: net.ParseIP("192.0.0.0"),
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to: net.ParseIP("192.0.0.255"),
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},
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{
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from: net.ParseIP("192.0.2.0"),
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to: net.ParseIP("192.0.2.255"),
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},
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{
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from: net.ParseIP("192.88.99.0"),
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to: net.ParseIP("192.88.99.255"),
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},
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{
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from: net.ParseIP("192.168.0.0"),
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to: net.ParseIP("192.168.255.255"),
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},
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{
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from: net.ParseIP("198.18.0.0"),
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to: net.ParseIP("198.19.255.255"),
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},
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{
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from: net.ParseIP("198.51.100.0"),
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to: net.ParseIP("198.51.100.255"),
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},
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{
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from: net.ParseIP("203.0.113.0"),
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to: net.ParseIP("203.0.113.255"),
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},
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{
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from: net.ParseIP("224.0.0.0"),
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to: net.ParseIP("239.255.255.255"),
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},
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{
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from: net.ParseIP("240.0.0.0"),
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to: net.ParseIP("255.255.255.255"),
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},
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{
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from: net.ParseIP("255.255.255.255"),
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to: net.ParseIP("255.255.255.255"),
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},
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}
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