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fix IP parsing in local dns client

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This commit is contained in:
Darien Raymond 2018-12-06 20:11:45 +01:00
parent 30b5bffad4
commit 21b3f66b8b
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GPG Key ID: 7251FFA14BB18169
1 changed files with 18 additions and 9 deletions
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27
features/dns/localdns/client.go
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@ -21,7 +21,18 @@ func (*Client) Close() error { return nil }
// LookupIP implements Client. // LookupIP implements Client.
func (*Client) LookupIP(host string) ([]net.IP, error) { func (*Client) LookupIP(host string) ([]net.IP, error) {
return net.LookupIP(host) ips, err := net.LookupIP(host)
if err != nil {
return nil, err
}
parsedIPs := make([]net.IP, 0, len(ips))
for _, ip := range parsedIPs {
parsed := net.IPAddress(ip)
if parsed != nil {
parsedIPs = append(parsedIPs, parsed.IP())
}
}
return parsedIPs, nil
} }
// LookupIPv4 implements IPv4Lookup. // LookupIPv4 implements IPv4Lookup.
@ -30,11 +41,10 @@ func (c *Client) LookupIPv4(host string) ([]net.IP, error) {
if err != nil { if err != nil {
return nil, err return nil, err
} }
var ipv4 []net.IP ipv4 := make([]net.IP, 0, len(ips))
for _, ip := range ips { for _, ip := range ips {
parsed := net.IPAddress(ip) if len(ip) == net.IPv4len {
if parsed.Family().IsIPv4() { ipv4 = append(ipv4, ip)
ipv4 = append(ipv4, parsed.IP())
} }
} }
return ipv4, nil return ipv4, nil
@ -46,11 +56,10 @@ func (c *Client) LookupIPv6(host string) ([]net.IP, error) {
if err != nil { if err != nil {
return nil, err return nil, err
} }
var ipv6 []net.IP ipv6 := make([]net.IP, 0, len(ips))
for _, ip := range ips { for _, ip := range ips {
parsed := net.IPAddress(ip) if len(ip) == net.IPv6len {
if parsed.Family().IsIPv6() { ipv6 = append(ipv6, ip)
ipv6 = append(ipv6, parsed.IP())
} }
} }
return ipv6, nil return ipv6, nil