c6febe6250
* Add pkg/fall for Fallthrough Move this into it's own package to facilitate tests. Important bug was fixed: make the names fully qualified. Add fall package to hosts, reverse, etcd, and fix kubernetes and any tests. The k8s tests are still as-is, might need a future cleanup.
125 lines
2.3 KiB
Go
125 lines
2.3 KiB
Go
package hosts
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"path"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/coredns/coredns/core/dnsserver"
|
|
"github.com/coredns/coredns/plugin"
|
|
"github.com/coredns/coredns/plugin/pkg/fall"
|
|
|
|
"github.com/mholt/caddy"
|
|
)
|
|
|
|
func init() {
|
|
caddy.RegisterPlugin("hosts", caddy.Plugin{
|
|
ServerType: "dns",
|
|
Action: setup,
|
|
})
|
|
}
|
|
|
|
func setup(c *caddy.Controller) error {
|
|
h, err := hostsParse(c)
|
|
if err != nil {
|
|
return plugin.Error("hosts", err)
|
|
}
|
|
|
|
parseChan := make(chan bool)
|
|
|
|
c.OnStartup(func() error {
|
|
h.readHosts()
|
|
|
|
go func() {
|
|
ticker := time.NewTicker(5 * time.Second)
|
|
for {
|
|
select {
|
|
case <-parseChan:
|
|
return
|
|
case <-ticker.C:
|
|
h.readHosts()
|
|
}
|
|
}
|
|
}()
|
|
return nil
|
|
})
|
|
|
|
c.OnShutdown(func() error {
|
|
close(parseChan)
|
|
return nil
|
|
})
|
|
|
|
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
|
|
h.Next = next
|
|
return h
|
|
})
|
|
|
|
return nil
|
|
}
|
|
|
|
func hostsParse(c *caddy.Controller) (Hosts, error) {
|
|
var h = Hosts{
|
|
Hostsfile: &Hostsfile{
|
|
path: "/etc/hosts",
|
|
hmap: newHostsMap(),
|
|
},
|
|
}
|
|
|
|
config := dnsserver.GetConfig(c)
|
|
|
|
inline := []string{}
|
|
for c.Next() {
|
|
args := c.RemainingArgs()
|
|
if len(args) >= 1 {
|
|
h.path = args[0]
|
|
args = args[1:]
|
|
|
|
if !path.IsAbs(h.path) && config.Root != "" {
|
|
h.path = path.Join(config.Root, h.path)
|
|
}
|
|
s, err := os.Stat(h.path)
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
log.Printf("[WARNING] File does not exist: %s", h.path)
|
|
} else {
|
|
return h, c.Errf("unable to access hosts file '%s': %v", h.path, err)
|
|
}
|
|
}
|
|
if s != nil && s.IsDir() {
|
|
log.Printf("[WARNING] hosts file %q is a directory", h.path)
|
|
}
|
|
}
|
|
|
|
origins := make([]string, len(c.ServerBlockKeys))
|
|
copy(origins, c.ServerBlockKeys)
|
|
if len(args) > 0 {
|
|
origins = args
|
|
}
|
|
|
|
for i := range origins {
|
|
origins[i] = plugin.Host(origins[i]).Normalize()
|
|
}
|
|
h.Origins = origins
|
|
|
|
for c.NextBlock() {
|
|
switch c.Val() {
|
|
case "fallthrough":
|
|
h.Fall = fall.New()
|
|
h.Fall.SetZones(c.RemainingArgs())
|
|
default:
|
|
if h.Fall.IsNil() {
|
|
line := strings.Join(append([]string{c.Val()}, c.RemainingArgs()...), " ")
|
|
inline = append(inline, line)
|
|
continue
|
|
}
|
|
return h, c.Errf("unknown property '%s'", c.Val())
|
|
}
|
|
}
|
|
}
|
|
|
|
h.initInline(inline)
|
|
|
|
return h, nil
|
|
}
|