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Add certificate requests in the templates.

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This commit is contained in:
Mariano Cano 2020-07-09 11:40:37 -07:00
parent ca2fb42d68
commit 28ff122f83
3 changed files with 22 additions and 12 deletions
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2
x509util/certificate.go
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@ -43,7 +43,7 @@ func NewCertificate(cr *x509.CertificateRequest, opts ...Option) (*Certificate,
return nil, errors.Wrap(err, "error validating certificate request")
}
o, err := new(Options).apply(opts)
o, err := new(Options).apply(cr, opts)
if err != nil {
return nil, err
}

17
x509util/options.go
View file

@ -2,6 +2,7 @@ package x509util
import (
"bytes"
"crypto/x509"
"io/ioutil"
"text/template"
@ -15,9 +16,9 @@ type Options struct {
CertBuffer *bytes.Buffer
}
func (o *Options) apply(opts []Option) (*Options, error) {
func (o *Options) apply(cr *x509.CertificateRequest, opts []Option) (*Options, error) {
for _, fn := range opts {
if err := fn(o); err != nil {
if err := fn(cr, o); err != nil {
return o, err
}
}
@ -25,18 +26,19 @@ func (o *Options) apply(opts []Option) (*Options, error) {
}
// Option is the type used as a variadic argument in NewCertificate.
type Option func(o *Options) error
type Option func(cr *x509.CertificateRequest, o *Options) error
// WithTemplate is an options that executes the given template text with the
// given data.
func WithTemplate(text string, data map[string]interface{}) Option {
return func(o *Options) error {
func WithTemplate(text string, data TemplateData) Option {
return func(cr *x509.CertificateRequest, o *Options) error {
tmpl, err := template.New("template").Funcs(sprig.TxtFuncMap()).Parse(text)
if err != nil {
return errors.Wrapf(err, "error parsing template")
}
buf := new(bytes.Buffer)
data.SetCertificateRequest(cr)
if err := tmpl.Execute(buf, data); err != nil {
return errors.Wrapf(err, "error executing template")
}
@ -47,8 +49,8 @@ func WithTemplate(text string, data map[string]interface{}) Option {
// WithTemplateFile is an options that reads the template file and executes it
// with the given data.
func WithTemplateFile(path string, data map[string]interface{}) Option {
return func(o *Options) error {
func WithTemplateFile(path string, data TemplateData) Option {
return func(cr *x509.CertificateRequest, o *Options) error {
filename := config.StepAbs(path)
b, err := ioutil.ReadFile(filename)
if err != nil {
@ -61,6 +63,7 @@ func WithTemplateFile(path string, data map[string]interface{}) Option {
}
buf := new(bytes.Buffer)
data.SetCertificateRequest(cr)
if err := tmpl.Execute(buf, data); err != nil {
return errors.Wrapf(err, "error executing %s", path)
}

7
x509util/templates.go
View file

@ -1,10 +1,13 @@
package x509util
import "crypto/x509"
const (
UserKey = "User"
SubjectKey = "Subject"
SANsKey = "SANs"
TokenKey = "Token"
CertificateRequestKey = "CR"
)
// TemplateData is an alias for map[string]interface{}. It represents the data
@ -31,6 +34,10 @@ func (t TemplateData) SetToken(v interface{}) {
t[TokenKey] = v
}
func (t TemplateData) SetCertificateRequest(cr *x509.CertificateRequest) {
t[CertificateRequestKey] = newCertificateRequest(cr)
}
const DefaultLeafTemplate = `{
"subject": {{ toJson .Subject }},
"sans": {{ toJson .SANs }},