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authorBen Burwell <ben@benburwell.com>2019-07-31 13:33:50 -0400
committerDrew DeVault <sir@cmpwn.com>2019-08-02 09:34:08 -0400
commitbb620e09004e63699562c0533645bf8cfd865097 (patch)
tree94554615e3f5baf0ee174ae71b3fd6539bec33f2 /widgets/compose.go
parent3424c36d5225f6b798616dc691ea10bb693a2dcc (diff)
Include body MIME terminator in multipart messages
Before, the text/plain part of the multipart MIME message was not being correctly terminated with its boundary. The multipart writer writes the terminator when its Close is called, but since the call to Close() was deferred, it was not being called until after the attachments were being written resulting in the boundary not being included at all.
Diffstat (limited to 'widgets/compose.go')
-rw-r--r--widgets/compose.go53
1 files changed, 30 insertions, 23 deletions
diff --git a/widgets/compose.go b/widgets/compose.go
index 3dd569d..03b6586 100644
--- a/widgets/compose.go
+++ b/widgets/compose.go
@@ -335,14 +335,7 @@ func (c *Composer) WriteMessage(header *mail.Header, writer io.Writer) error {
if len(c.attachments) == 0 {
// don't create a multipart email if we only have text
- header.SetContentType("text/plain", map[string]string{"charset": "UTF-8"})
- w, err := mail.CreateSingleInlineWriter(writer, *header)
- if err != nil {
- return errors.Wrap(err, "CreateSingleInlineWriter")
- }
- defer w.Close()
-
- return writeBody(body, w)
+ return writeInlineBody(header, body, writer)
}
// otherwise create a multipart email,
@@ -353,6 +346,34 @@ func (c *Composer) WriteMessage(header *mail.Header, writer io.Writer) error {
}
defer w.Close()
+ if err := writeMultipartBody(body, w); err != nil {
+ return errors.Wrap(err, "writeMultipartBody")
+ }
+
+ for _, a := range c.attachments {
+ if err := writeAttachment(a, w); err != nil {
+ return errors.Wrap(err, "writeAttachment")
+ }
+ }
+
+ return nil
+}
+
+func writeInlineBody(header *mail.Header, body io.Reader, writer io.Writer) error {
+ header.SetContentType("text/plain", map[string]string{"charset": "UTF-8"})
+ w, err := mail.CreateSingleInlineWriter(writer, *header)
+ if err != nil {
+ return errors.Wrap(err, "CreateSingleInlineWriter")
+ }
+ defer w.Close()
+ if _, err := io.Copy(w, body); err != nil {
+ return errors.Wrap(err, "io.Copy")
+ }
+ return nil
+}
+
+// write the message body to the multipart message
+func writeMultipartBody(body io.Reader, w *mail.Writer) error {
bh := mail.InlineHeader{}
bh.SetContentType("text/plain", map[string]string{"charset": "UTF-8"})
@@ -367,23 +388,9 @@ func (c *Composer) WriteMessage(header *mail.Header, writer io.Writer) error {
return errors.Wrap(err, "CreatePart")
}
defer bw.Close()
-
- if err := writeBody(body, bw); err != nil {
- return err
- }
-
- for _, a := range c.attachments {
- writeAttachment(a, w)
- }
-
- return nil
-}
-
-func writeBody(body io.Reader, w io.Writer) error {
- if _, err := io.Copy(w, body); err != nil {
+ if _, err := io.Copy(bw, body); err != nil {
return errors.Wrap(err, "io.Copy")
}
-
return nil
}