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options.go
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options.go
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package main
import (
"crypto/tls"
"crypto/x509"
"fmt"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
func _pkscGrpcCreds(PEMca, PEMcert, PEMkey string) (credentials.TransportCredentials, error) {
certificate, err := tls.X509KeyPair([]byte(PEMcert), []byte(PEMkey))
if err != nil {
return nil, err
}
// TODO exit the pool to be global to the file we need to load only
// once..
caPool := x509.NewCertPool()
ok := caPool.AppendCertsFromPEM([]byte(PEMca))
if !ok {
return nil, fmt.Errorf("bleh")
}
tlsConfig := &tls.Config{
ClientAuth: tls.RequireAndVerifyClientCert,
Certificates: []tls.Certificate{certificate},
ClientCAs: caPool,
InsecureSkipVerify: false,
// XXX this handler is NOT necessary for GRPC, since you have the interceptor
// but for normal sockets with single cert it's the basic client verification
//VerifyPeerCertificate: PscVerifyPeerCertificate,
MinVersion: tls.VersionTLS13,
CipherSuites: []uint16{
tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
tls.TLS_AES_128_GCM_SHA256,
tls.TLS_AES_256_GCM_SHA384,
tls.TLS_CHACHA20_POLY1305_SHA256},
}
return credentials.NewTLS(tlsConfig), nil
}
var (
optIntercept = map[string]func() grpc.ServerOption{
"servA": pkscGrpcOptInterceptor_servA,
"servB": pkscGrpcOptInterceptor_servB,
//"servC": pkscGrpcOptInterceptor_servC,
}
optTlsId = map[string]func(p ...string) (grpc.ServerOption, error){
"servA": pkscGrpcOptTlsServer_servA,
"servB": pkscGrpcOptTlsServer_servB,
}
)
func pkscGrpcOptInterceptorByName(name string) (opt grpc.ServerOption, err error) {
f, ok := optIntercept[name]
if !ok {
err = fmt.Errorf("no such name: %s", name)
return
}
opt = f()
return
}
func pkscGrpcOptTlsServerByName(name string) (opt grpc.ServerOption, err error) {
f, ok := optTlsId[name]
if !ok {
err = fmt.Errorf("no such name: %s", name)
return
}
opt, err = f()
return
}
/*
func pkscGrpcOptInterceptorByName(name string) (opt grpc.ServerOption, err error) {
f, ok := interceptors[name]
if !ok {
err = fmt.Errorf("prout")
return
}
opt = grpc.UnaryInterceptor(f)
return
}
func pkscGrpcOptTlsServerByName(name string) (opt grpc.ServerOption, err error) {
tlsId, ok := tlsCerts[name]
if !ok {
err = fmt.Errorf("prout")
return
}
tlscreds, err := pkscGrpcCredsServ(tlsId.ca, tlsId.cert, tlsId.key)
if err != nil {
return
}
opt = grpc.Creds(tlscreds)
return
}
*/