forked from coredns/coredns
/
config.go
67 lines (54 loc) · 1.82 KB
/
config.go
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package dnsserver
import (
"crypto/tls"
"github.com/coredns/coredns/middleware"
"github.com/mholt/caddy"
)
// Config configuration for a single server.
type Config struct {
// The zone of the site.
Zone string
// The hostname to bind listener to, defaults to the wildcard address
ListenHost string
// The port to listen on.
Port string
// Root points to a base directory we we find user defined "things".
// First consumer is the file middleware to looks for zone files in this place.
Root string
// The transport we implement, normally just "dns" over TCP/UDP, but could be
// DNS-over-TLS or DNS-over-gRPC.
Transport string
// TLSConfig when listening for encrypted connections (gRPC, DNS-over-TLS).
TLSConfig *tls.Config
// Middleware stack.
Middleware []middleware.Middleware
// Compiled middleware stack.
middlewareChain middleware.Handler
}
// GetConfig gets the Config that corresponds to c.
// If none exist nil is returned.
func GetConfig(c *caddy.Controller) *Config {
ctx := c.Context().(*dnsContext)
if cfg, ok := ctx.keysToConfigs[c.Key]; ok {
return cfg
}
// we should only get here during tests because directive
// actions typically skip the server blocks where we make
// the configs.
ctx.saveConfig(c.Key, &Config{})
return GetConfig(c)
}
// GetMiddleware returns the middleware handler that has been added to the config under name.
// This is useful to inspect if a certain middleware is active in this server.
// Note that this is order dependent and the order is defined in directives.go, i.e. if your middleware
// comes before the middleware you are checking; it will not be there (yet).
func GetMiddleware(c *caddy.Controller, name string) middleware.Handler {
conf := GetConfig(c)
for _, h := range conf.Middleware {
x := h(nil)
if name == x.Name() {
return x
}
}
return nil
}