6b1ec05470
* autoencrypt: helpful error for clients with wrong dc If clients have set a different datacenter than the servers they're connecting with for autoencrypt, give a helpful error message.
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package consul
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import (
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"errors"
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"fmt"
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"github.com/hashicorp/consul/agent/structs"
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)
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var (
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ErrAutoEncryptAllowTLSNotEnabled = errors.New("AutoEncrypt.AllowTLS must be enabled in order to use this endpoint")
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)
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type AutoEncrypt struct {
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srv *Server
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}
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// Sign signs a certificate for an agent.
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func (a *AutoEncrypt) Sign(
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args *structs.CASignRequest,
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reply *structs.SignedResponse) error {
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if !a.srv.config.ConnectEnabled {
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return ErrConnectNotEnabled
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}
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if !a.srv.config.AutoEncryptAllowTLS {
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return ErrAutoEncryptAllowTLSNotEnabled
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}
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// There's no reason to forward the AutoEncrypt.Sign RPC to a remote datacenter because its certificates
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// won't be valid in this datacenter. If the client is requesting a different datacenter, then this is a
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// misconfiguration, and we can give them a useful error.
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if args.Datacenter != a.srv.config.Datacenter {
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return fmt.Errorf("mismatched datacenter (client_dc='%s' server_dc='%s');"+
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" check client has same datacenter set as servers", args.Datacenter, a.srv.config.Datacenter)
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}
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if done, err := a.srv.ForwardRPC("AutoEncrypt.Sign", args, reply); done {
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return err
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}
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// This is the ConnectCA endpoint which is reused here because it is
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// exactly what is needed.
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c := ConnectCA{srv: a.srv}
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rootsArgs := structs.DCSpecificRequest{Datacenter: args.Datacenter}
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roots := structs.IndexedCARoots{}
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err := c.Roots(&rootsArgs, &roots)
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if err != nil {
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return err
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}
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cert := structs.IssuedCert{}
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err = c.Sign(args, &cert)
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if err != nil {
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return err
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}
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reply.IssuedCert = cert
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reply.ConnectCARoots = roots
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reply.ManualCARoots = a.srv.tlsConfigurator.ManualCAPems()
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reply.VerifyServerHostname = a.srv.tlsConfigurator.VerifyServerHostname()
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return nil
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}
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