a6d9adbf4a
* make sure client CA and auth type are set if CA is explicitly specified. added some simple tests to confirm the effect. * test certificates (forgot to add them in the previous commit) * made client auth policy configurable with new client_auth option. README has been updated accordingly. * fix editorial in README
76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
package tls
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import (
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ctls "crypto/tls"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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"github.com/coredns/coredns/plugin/pkg/tls"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("tls", caddy.Plugin{
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ServerType: "dns",
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Action: setup,
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})
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}
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func setup(c *caddy.Controller) error {
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err := parseTLS(c)
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if err != nil {
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return plugin.Error("tls", err)
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}
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return nil
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}
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func parseTLS(c *caddy.Controller) error {
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config := dnsserver.GetConfig(c)
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if config.TLSConfig != nil {
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return plugin.Error("tls", c.Errf("TLS already configured for this server instance"))
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}
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for c.Next() {
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args := c.RemainingArgs()
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if len(args) < 2 || len(args) > 3 {
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return plugin.Error("tls", c.ArgErr())
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}
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clientAuth := ctls.NoClientCert
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for c.NextBlock() {
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switch c.Val() {
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case "client_auth":
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authTypeArgs := c.RemainingArgs()
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if len(authTypeArgs) != 1 {
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return c.ArgErr()
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}
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switch authTypeArgs[0] {
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case "nocert":
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clientAuth = ctls.NoClientCert
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case "request":
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clientAuth = ctls.RequestClientCert
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case "require":
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clientAuth = ctls.RequireAnyClientCert
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case "verify_if_given":
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clientAuth = ctls.VerifyClientCertIfGiven
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case "require_and_verify":
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clientAuth = ctls.RequireAndVerifyClientCert
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default:
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return c.Errf("unknown authentication type '%s'", authTypeArgs[0])
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}
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default:
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return c.Errf("unknown option '%s'", c.Val())
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}
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}
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tls, err := tls.NewTLSConfigFromArgs(args...)
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if err != nil {
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return err
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}
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tls.ClientAuth = clientAuth
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// NewTLSConfigFromArgs only sets RootCAs, so we need to let ClientCAs refer to it.
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tls.ClientCAs = tls.RootCAs
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config.TLSConfig = tls
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}
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return nil
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}
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