Update lego

vendor/github.com/dnsimple/dnsimple-go/dnsimple/authentication.go

@@ -0,0 +1,68 @@
+package dnsimple
+
+import (
+	"encoding/base64"
+)
+
+const (
+	httpHeaderDomainToken   = "X-DNSimple-Domain-Token"
+	httpHeaderApiToken      = "X-DNSimple-Token"
+	httpHeaderAuthorization = "Authorization"
+)
+
+// Provides credentials that can be used for authenticating with DNSimple.
+//
+// See https://developer.dnsimple.com/v2/#authentication
+type Credentials interface {
+	// Returns the HTTP headers that should be set
+	// to authenticate the HTTP Request.
+	Headers() map[string]string
+}
+
+// Domain token authentication
+type domainTokenCredentials struct {
+	domainToken string
+}
+
+// NewDomainTokenCredentials construct Credentials using the DNSimple Domain Token method.
+func NewDomainTokenCredentials(domainToken string) Credentials {
+	return &domainTokenCredentials{domainToken: domainToken}
+}
+
+func (c *domainTokenCredentials) Headers() map[string]string {
+	return map[string]string{httpHeaderDomainToken: c.domainToken}
+}
+
+// HTTP basic authentication
+type httpBasicCredentials struct {
+	email    string
+	password string
+}
+
+// NewHTTPBasicCredentials construct Credentials using HTTP Basic Auth.
+func NewHTTPBasicCredentials(email, password string) Credentials {
+	return &httpBasicCredentials{email, password}
+}
+
+func (c *httpBasicCredentials) Headers() map[string]string {
+	return map[string]string{httpHeaderAuthorization: "Basic " + c.basicAuth(c.email, c.password)}
+}
+
+func (c *httpBasicCredentials) basicAuth(username, password string) string {
+	auth := username + ":" + password
+	return base64.StdEncoding.EncodeToString([]byte(auth))
+}
+
+// OAuth token authentication
+type oauthTokenCredentials struct {
+	oauthToken string
+}
+
+// NewOauthTokenCredentials construct Credentials using the OAuth access token.
+func NewOauthTokenCredentials(oauthToken string) Credentials {
+	return &oauthTokenCredentials{oauthToken: oauthToken}
+}
+
+func (c *oauthTokenCredentials) Headers() map[string]string {
+	return map[string]string{httpHeaderAuthorization: "Bearer " + c.oauthToken}
+}