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package server
import (
"crypto/x509"
"fmt"
"net/http"
)
// Node is an identified system that can request certificates
type Node struct {
Name string `json:"name"` // Artbirary node name for authentication
Secret string `json:"secret"` // Arbitrary node secret for authentication
Domains []string `json:"issues"` // Exact-match domain names that are allowed
}
func (node *Node) authenticate(r *http.Request) error {
user, password, ok := r.BasicAuth()
if !ok {
return fmt.Errorf("no http basic auth credentials")
}
if user != node.Name || password != node.Secret {
return fmt.Errorf("invalid http basic auth credentials")
}
return nil
}
func (node *Node) check(crt x509.Certificate) error {
for _, san := range crt.DNSNames {
ok := false
for _, domain := range node.Domains {
if domain == san {
ok = true
break
}
}
if !ok {
return fmt.Errorf("%s: not authorized to issue certificates for %s", node.Name, san)
}
}
return nil
}
// Nodes is a list of nodes that can request certificates
type Nodes []Node
func (nodes *Nodes) authenticate(r *http.Request) (Node, error) {
for _, node := range (*nodes)[:] {
if err := node.authenticate(r); err == nil {
return node, nil
}
}
return Node{}, fmt.Errorf("no valid HTTP basic auth credentials")
}
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