1 files changed, 0 insertions, 45 deletions
diff --git a/katzenpost/dispatcher/envelope.go b/katzenpost/dispatcher/envelope.go
deleted file mode 100644
index b9ff7b8..0000000
--- a/katzenpost/dispatcher/envelope.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package dispatcher
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"net/mail"
-	"strings"
-)
-
-const MaxEnvelopeBytes = 64 * 1024
-
-// Envelope is the only application payload accepted by the dispatcher. Message
-// must already be a complete YAMN transport envelope, not user supplied mail.
-type Envelope struct {
-	EntryAddress string `json:"entry_address"`
-	Message      []byte `json:"message"`
-}
-
-func (e Envelope) Validate(allowedDomains map[string]struct{}) error {
-	if len(e.Message) == 0 || len(e.Message) > MaxEnvelopeBytes {
-		return fmt.Errorf("invalid YAMN envelope size")
-	}
-	if bytes.Contains(e.Message, []byte("\r")) {
-		return errors.New("YAMN envelope must use LF line endings")
-	}
-	address, err := mail.ParseAddress(e.EntryAddress)
-	if err != nil || address.Address != e.EntryAddress {
-		return errors.New("invalid entry remailer address")
-	}
-	parts := strings.Split(address.Address, "@")
-	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
-		return errors.New("invalid entry remailer address")
-	}
-	if _, ok := allowedDomains[strings.ToLower(parts[1])]; !ok {
-		return errors.New("entry remailer domain is not allowed")
-	}
-	if !bytes.HasPrefix(e.Message, []byte("To: "+e.EntryAddress+"\n")) {
-		return errors.New("YAMN envelope recipient does not match entry remailer")
-	}
-	if !bytes.Contains(e.Message, []byte("-----BEGIN REMAILER MESSAGE-----\n")) {
-		return errors.New("invalid YAMN envelope")
-	}
-	return nil
-}