fix: update lego.

vendor/google.golang.org/api/gensupport/media.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"mime"
 	"mime/multipart"
 	"net/http"
 	"net/textproto"
@@ -115,11 +116,15 @@ type multipartReader struct {
 	pipeOpen bool
 }
 
-func newMultipartReader(parts []typeReader) *multipartReader {
+// boundary optionally specifies the MIME boundary
+func newMultipartReader(parts []typeReader, boundary string) *multipartReader {
 	mp := &multipartReader{pipeOpen: true}
 	var pw *io.PipeWriter
 	mp.pr, pw = io.Pipe()
 	mpw := multipart.NewWriter(pw)
+	if boundary != "" {
+		mpw.SetBoundary(boundary)
+	}
 	mp.ctype = "multipart/related; boundary=" + mpw.Boundary()
 	go func() {
 		for _, part := range parts {
@@ -163,10 +168,15 @@ func (mp *multipartReader) Close() error {
 //
 // The caller must call Close on the returned ReadCloser if reads are abandoned before reaching EOF.
 func CombineBodyMedia(body io.Reader, bodyContentType string, media io.Reader, mediaContentType string) (io.ReadCloser, string) {
+	return combineBodyMedia(body, bodyContentType, media, mediaContentType, "")
+}
+
+// combineBodyMedia is CombineBodyMedia but with an optional mimeBoundary field.
+func combineBodyMedia(body io.Reader, bodyContentType string, media io.Reader, mediaContentType, mimeBoundary string) (io.ReadCloser, string) {
 	mp := newMultipartReader([]typeReader{
 		{body, bodyContentType},
 		{media, mediaContentType},
-	})
+	}, mimeBoundary)
 	return mp, mp.ctype
 }
 
@@ -242,6 +252,7 @@ func NewInfoFromResumableMedia(r io.ReaderAt, size int64, mediaType string) *Med
 	}
 }
 
+// SetProgressUpdater sets the progress updater for the media info.
 func (mi *MediaInfo) SetProgressUpdater(pu googleapi.ProgressUpdater) {
 	if mi != nil {
 		mi.progressUpdater = pu
@@ -283,7 +294,11 @@ func (mi *MediaInfo) UploadRequest(reqHeaders http.Header, body io.Reader) (newB
 			getBody = func() (io.ReadCloser, error) {
 				rb := ioutil.NopCloser(fb())
 				rm := ioutil.NopCloser(fm())
-				r, _ := CombineBodyMedia(rb, "application/json", rm, mi.mType)
+				var mimeBoundary string
+				if _, params, err := mime.ParseMediaType(ctype); err == nil {
+					mimeBoundary = params["boundary"]
+				}
+				r, _ := combineBodyMedia(rb, "application/json", rm, mi.mType, mimeBoundary)
 				return r, nil
 			}
 		}
@@ -334,3 +349,15 @@ func (mi *MediaInfo) ResumableUpload(locURI string) *ResumableUpload {
 		},
 	}
 }
+
+// SetGetBody sets the GetBody field of req to f. This was once needed
+// to gracefully support Go 1.7 and earlier which didn't have that
+// field.
+//
+// Deprecated: the code generator no longer uses this as of
+// 2019-02-19. Nothing else should be calling this anyway, but we
+// won't delete this immediately; it will be deleted in as early as 6
+// months.
+func SetGetBody(req *http.Request, f func() (io.ReadCloser, error)) {
+	req.GetBody = f
+}