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Windows: Don't pull in all of resolvconf

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Signed-off-by: John Howard <jhoward@microsoft.com>
This commit is contained in:
John Howard 2015-05-11 15:16:23 -07:00
parent 2c617078a7
commit d255187be4
2 changed files with 18 additions and 10 deletions
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16
resolvconf/dns/resolvconf.go Normal file
View file

@ -0,0 +1,16 @@
package dns
import (
"regexp"
)
const IpLocalhost = `((127\.([0-9]{1,3}.){2}[0-9]{1,3})|(::1))`
var localhostIPRegexp = regexp.MustCompile(IpLocalhost)
// IsLocalhost returns true if ip matches the localhost IP regular expression.
// Used for determining if nameserver settings are being passed which are
// localhost addresses
func IsLocalhost(ip string) bool {
return localhostIPRegexp.MatchString(ip)
}

12
resolvconf/resolvconf.go
View file

@ -10,6 +10,7 @@ import (
"github.com/Sirupsen/logrus" "github.com/Sirupsen/logrus"
"github.com/docker/docker/pkg/ioutils" "github.com/docker/docker/pkg/ioutils"
"github.com/docker/docker/pkg/resolvconf/dns"
) )
var ( var (
@ -24,10 +25,8 @@ var (
// For readability and sufficiency for Docker purposes this seemed more reasonable than a // For readability and sufficiency for Docker purposes this seemed more reasonable than a
// 1000+ character regexp with exact and complete IPv6 validation // 1000+ character regexp with exact and complete IPv6 validation
ipv6Address = `([0-9A-Fa-f]{0,4}:){2,7}([0-9A-Fa-f]{0,4})` ipv6Address = `([0-9A-Fa-f]{0,4}:){2,7}([0-9A-Fa-f]{0,4})`
ipLocalhost = `((127\.([0-9]{1,3}.){2}[0-9]{1,3})|(::1))`
localhostIPRegexp = regexp.MustCompile(ipLocalhost) localhostNSRegexp = regexp.MustCompile(`(?m)^nameserver\s+` + dns.IpLocalhost + `\s*\n*`)
localhostNSRegexp = regexp.MustCompile(`(?m)^nameserver\s+` + ipLocalhost + `\s*\n*`)
nsIPv6Regexp = regexp.MustCompile(`(?m)^nameserver\s+` + ipv6Address + `\s*\n*`) nsIPv6Regexp = regexp.MustCompile(`(?m)^nameserver\s+` + ipv6Address + `\s*\n*`)
nsRegexp = regexp.MustCompile(`^\s*nameserver\s*((` + ipv4Address + `)|(` + ipv6Address + `))\s*$`) nsRegexp = regexp.MustCompile(`^\s*nameserver\s*((` + ipv4Address + `)|(` + ipv6Address + `))\s*$`)
searchRegexp = regexp.MustCompile(`^\s*search\s*(([^\s]+\s*)*)$`) searchRegexp = regexp.MustCompile(`^\s*search\s*(([^\s]+\s*)*)$`)
@ -128,13 +127,6 @@ func getLines(input []byte, commentMarker []byte) [][]byte {
return output return output
} }
// IsLocalhost returns true if ip matches the localhost IP regular expression.
// Used for determining if nameserver settings are being passed which are
// localhost addresses
func IsLocalhost(ip string) bool {
return localhostIPRegexp.MatchString(ip)
}
// GetNameservers returns nameservers (if any) listed in /etc/resolv.conf // GetNameservers returns nameservers (if any) listed in /etc/resolv.conf
func GetNameservers(resolvConf []byte) []string { func GetNameservers(resolvConf []byte) []string {
nameservers := []string{} nameservers := []string{}