local-server/cmd/dkl-local-server/cluster-render-context.go

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package main
import (
"encoding/json"
"fmt"
"log"
"path"
"github.com/cloudflare/cfssl/csr"
yaml "gopkg.in/yaml.v2"
"novit.nc/direktil/pkg/config"
)
var templateFuncs = map[string]interface{}{
"password": func(cluster, name string) (password string, err error) {
password = secretData.Password(cluster, name)
if len(password) == 0 {
err = fmt.Errorf("password %q not defined for cluster %q", name, cluster)
}
return
},
"token": func(cluster, name string) (s string, err error) {
return secretData.Token(cluster, name)
},
"ca_key": func(cluster, name string) (s string, err error) {
ca, err := secretData.CA(cluster, name)
if err != nil {
return
}
s = string(ca.Key)
return
},
"ca_crt": func(cluster, name string) (s string, err error) {
ca, err := secretData.CA(cluster, name)
if err != nil {
return
}
s = string(ca.Cert)
return
},
"ca_dir": func(cluster, name string) (s string, err error) {
ca, err := secretData.CA(cluster, name)
if err != nil {
return
}
dir := "/etc/tls-ca/" + name
return asYaml([]config.FileDef{
{
Path: path.Join(dir, "ca.crt"),
Mode: 0644,
Content: string(ca.Cert),
},
{
Path: path.Join(dir, "ca.key"),
Mode: 0600,
Content: string(ca.Key),
},
})
},
"tls_key": func(cluster, caName, name, profile, label, reqJson string) (s string, err error) {
kc, err := getKeyCert(cluster, caName, name, profile, label, reqJson)
if err != nil {
return
}
s = string(kc.Key)
return
},
"tls_crt": func(cluster, caName, name, profile, label, reqJson string) (s string, err error) {
kc, err := getKeyCert(cluster, caName, name, profile, label, reqJson)
if err != nil {
return
}
s = string(kc.Cert)
return
},
"tls_dir": func(dir, cluster, caName, name, profile, label, reqJson string) (s string, err error) {
ca, err := secretData.CA(cluster, caName)
if err != nil {
return
}
kc, err := getKeyCert(cluster, caName, name, profile, label, reqJson)
if err != nil {
return
}
return asYaml([]config.FileDef{
{
Path: path.Join(dir, "ca.crt"),
Mode: 0644,
Content: string(ca.Cert),
},
{
Path: path.Join(dir, "tls.crt"),
Mode: 0644,
Content: string(kc.Cert),
},
{
Path: path.Join(dir, "tls.key"),
Mode: 0600,
Content: string(kc.Key),
},
})
},
"ssh_host_keys": func(dir, cluster, host string) (s string, err error) {
pairs, err := secretData.SSHKeyPairs(cluster, host)
if err != nil {
return
}
files := make([]config.FileDef, 0, len(pairs)*2)
for _, pair := range pairs {
basePath := path.Join(dir, "ssh_host_"+pair.Type+"_key")
files = append(files, []config.FileDef{
{
Path: basePath,
Mode: 0600,
Content: pair.Private,
},
{
Path: basePath + ".pub",
Mode: 0644,
Content: pair.Public,
},
}...)
}
return asYaml(files)
},
}
func getKeyCert(cluster, caName, name, profile, label, reqJson string) (kc *KeyCert, err error) {
certReq := &csr.CertificateRequest{
KeyRequest: csr.NewBasicKeyRequest(),
}
err = json.Unmarshal([]byte(reqJson), certReq)
if err != nil {
log.Print("CSR unmarshal failed on: ", reqJson)
return
}
return secretData.KeyCert(cluster, caName, name, profile, label, certReq)
}
func asYaml(v interface{}) (string, error) {
ba, err := yaml.Marshal(v)
if err != nil {
return "", err
}
return string(ba), nil
}