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package federation
import (
"fmt"
"net/http"
"github.com/spiffe/go-spiffe/v2/bundle/spiffebundle"
"github.com/spiffe/go-spiffe/v2/logger"
"github.com/spiffe/go-spiffe/v2/spiffeid"
)
type HandlerOption interface {
apply(*handlerConfig) error
}
func WithLogger(log logger.Logger) HandlerOption {
return handlerOption(func(c *handlerConfig) error {
c.log = log
return nil
})
}
// NewHandler returns an HTTP handler that provides the trust domain bundle for
// the given trust domain. The bundle is encoded according to the format
// outlined in the SPIFFE Trust Domain and Bundle specification. The bundle
// source is used to obtain the bundle on each request. Source implementations
// should consider a caching strategy if retrieval is expensive.
// See the specification for more details:
// https://github.com/spiffe/spiffe/blob/main/standards/SPIFFE_Trust_Domain_and_Bundle.md
func NewHandler(trustDomain spiffeid.TrustDomain, source spiffebundle.Source, opts ...HandlerOption) (http.Handler, error) {
conf := &handlerConfig{
log: logger.Null,
}
for _, opt := range opts {
if err := opt.apply(conf); err != nil {
return nil, fmt.Errorf("handler configuration is invalid: %w", err)
}
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
http.Error(w, "method is not allowed", http.StatusMethodNotAllowed)
return
}
bundle, err := source.GetBundleForTrustDomain(trustDomain)
if err != nil {
conf.log.Errorf("unable to get bundle for trust domain %q: %v", trustDomain, err)
http.Error(w, fmt.Sprintf("unable to serve bundle for %q", trustDomain), http.StatusInternalServerError)
return
}
data, err := bundle.Marshal()
if err != nil {
conf.log.Errorf("unable to marshal bundle for trust domain %q: %v", trustDomain, err)
http.Error(w, fmt.Sprintf("unable to serve bundle for %q", trustDomain), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
_, _ = w.Write(data)
}), nil
}
type handlerConfig struct {
log logger.Logger
}
type handlerOption func(*handlerConfig) error
func (o handlerOption) apply(conf *handlerConfig) error {
return o(conf)
}
|
