mirror of
https://github.com/smallstep/certificates.git
synced 2024-11-17 15:29:21 +00:00
102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
package identity
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"crypto/x509"
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// Client wraps http.Client with a transport using the step root and identity.
|
|
type Client struct {
|
|
CaURL *url.URL
|
|
*http.Client
|
|
}
|
|
|
|
// ResolveReference resolves the given reference from the CaURL.
|
|
func (c *Client) ResolveReference(ref *url.URL) *url.URL {
|
|
return c.CaURL.ResolveReference(ref)
|
|
}
|
|
|
|
// LoadClient configures an http.Client with the root in
|
|
// $STEPPATH/config/defaults.json and the identity defined in
|
|
// $STEPPATH/config/identity.json
|
|
func LoadClient() (*Client, error) {
|
|
defaultsFile := DefaultsFile()
|
|
b, err := os.ReadFile(defaultsFile)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error reading %s", defaultsFile)
|
|
}
|
|
|
|
var defaults defaultsConfig
|
|
if err := json.Unmarshal(b, &defaults); err != nil {
|
|
return nil, errors.Wrapf(err, "error unmarshaling %s", defaultsFile)
|
|
}
|
|
if err := defaults.Validate(); err != nil {
|
|
return nil, errors.Wrapf(err, "error validating %s", defaultsFile)
|
|
}
|
|
caURL, err := url.Parse(defaults.CaURL)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error validating %s", defaultsFile)
|
|
}
|
|
if caURL.Scheme == "" {
|
|
caURL.Scheme = "https"
|
|
}
|
|
|
|
identity, err := LoadDefaultIdentity()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := identity.Validate(); err != nil {
|
|
return nil, errors.Wrapf(err, "error validating %s", IdentityFile())
|
|
}
|
|
if kind := identity.Kind(); kind != MutualTLS {
|
|
return nil, errors.Errorf("unsupported identity %s: only mTLS is currently supported", kind)
|
|
}
|
|
|
|
// Prepare transport with information in defaults.json and identity.json
|
|
tr := http.DefaultTransport.(*http.Transport).Clone()
|
|
tr.TLSClientConfig = &tls.Config{
|
|
MinVersion: tls.VersionTLS12,
|
|
GetClientCertificate: identity.GetClientCertificateFunc(),
|
|
}
|
|
|
|
// RootCAs
|
|
b, err = os.ReadFile(defaults.Root)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error loading %s", defaults.Root)
|
|
}
|
|
pool := x509.NewCertPool()
|
|
if pool.AppendCertsFromPEM(b) {
|
|
tr.TLSClientConfig.RootCAs = pool
|
|
}
|
|
|
|
return &Client{
|
|
CaURL: caURL,
|
|
Client: &http.Client{
|
|
Transport: tr,
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
type defaultsConfig struct {
|
|
CaURL string `json:"ca-url"`
|
|
Root string `json:"root"`
|
|
}
|
|
|
|
func (c *defaultsConfig) Validate() error {
|
|
switch {
|
|
case c.CaURL == "":
|
|
return fmt.Errorf("missing or invalid `ca-url` property")
|
|
case c.Root == "":
|
|
return fmt.Errorf("missing or invalid `root` property")
|
|
default:
|
|
return nil
|
|
}
|
|
}
|