forked from crewjam/saml
/
util.go
51 lines (39 loc) · 1.01 KB
/
util.go
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package samlidp
import (
"encoding/xml"
"errors"
"io"
"io/ioutil"
"github.com/bilcus/saml"
)
func randomBytes(n int) []byte {
rv := make([]byte, n)
if _, err := saml.RandReader.Read(rv); err != nil {
panic(err)
}
return rv
}
func getSPMetadata(r io.Reader) (spMetadata *saml.EntityDescriptor, err error) {
var bytes []byte
if bytes, err = ioutil.ReadAll(r); err != nil {
return nil, err
}
spMetadata = &saml.EntityDescriptor{}
if err := xml.Unmarshal(bytes, &spMetadata); err != nil {
if err.Error() == "expected element type <EntityDescriptor> but have <EntitiesDescriptor>" {
entities := &saml.EntitiesDescriptor{}
if err := xml.Unmarshal(bytes, &entities); err != nil {
return nil, err
}
for _, e := range entities.EntityDescriptors {
if len(e.SPSSODescriptors) > 0 {
return &e, nil
}
}
// there were no SPSSODescriptors in the response
return nil, errors.New("metadata contained no service provider metadata")
}
return nil, err
}
return spMetadata, nil
}