1 files changed, 53 insertions, 0 deletions
diff --git a/vendor/mellium.im/sasl/options.go b/vendor/mellium.im/sasl/options.go
new file mode 100644
index 000000000..427a2be59
--- /dev/null
+++ b/vendor/mellium.im/sasl/options.go
@@ -0,0 +1,53 @@
+// Copyright 2016 The Mellium Contributors.
+// Use of this source code is governed by the BSD 2-clause license that can be
+// found in the LICENSE file.
+
+package sasl
+
+import (
+	"crypto/tls"
+)
+
+// An Option represents an input to a SASL state machine.
+type Option func(*Negotiator)
+
+func getOpts(n *Negotiator, o ...Option) {
+	n.credentials = func() (username, password, identity []byte) {
+		return
+	}
+	n.permissions = func(_ *Negotiator) bool {
+		return false
+	}
+	for _, f := range o {
+		f(n)
+	}
+}
+
+// TLSState lets the state machine negotiate channel binding with a TLS session
+// if supported by the underlying mechanism.
+func TLSState(cs tls.ConnectionState) Option {
+	return func(n *Negotiator) {
+		n.tlsState = &cs
+	}
+}
+
+// RemoteMechanisms sets a list of mechanisms supported by the remote client or
+// server with which the state machine will be negotiating.
+// It is used to determine if the server supports channel binding.
+func RemoteMechanisms(m ...string) Option {
+	return func(n *Negotiator) {
+		n.remoteMechanisms = m
+	}
+}
+
+// Credentials provides the negotiator with a username and password to
+// authenticate with and (optionally) an authorization identity.
+// Identity will normally be left empty to act as the username.
+// The Credentials function is called lazily and may be called multiple times by
+// the mechanism.
+// It is not memoized by the negotiator.
+func Credentials(f func() (Username, Password, Identity []byte)) Option {
+	return func(n *Negotiator) {
+		n.credentials = f
+	}
+}