imports: prevent empty Content-Type header field

emersion · emersion · commit fab70c279bc9 · 2026-05-10T18:43:54.000+02:00
This makes the API choke with "[36026] Imported message is empty".
diff --git a/imports/messages.go b/imports/messages.go
@@ -82,7 +82,9 @@ func ImportMessage(c *protonmail.Client, r io.Reader) error {
 	}
 
 	var ihdr mail.InlineHeader
-	ihdr.Set("Content-Type", hdr.Get("Content-Type"))
+	if hdr.Has("Content-Type") {
+		ihdr.Set("Content-Type", hdr.Get("Content-Type"))
+	}
 	ihdr.Set("Content-Transfer-Encoding", "8bit")
 
 	hdr.Del("Content-Type")

Original file line number	Diff line number	Diff line change
`@@ -82,7 +82,9 @@ func ImportMessage(c *protonmail.Client, r io.Reader) error {`
`82`	`82`	`}`
`83`	`83`
`84`	`84`	`var ihdr mail.InlineHeader`
`85`		`- ihdr.Set("Content-Type", hdr.Get("Content-Type"))`
	`85`	`+ if hdr.Has("Content-Type") {`
	`86`	`+ ihdr.Set("Content-Type", hdr.Get("Content-Type"))`
	`87`	`+ }`
`86`	`88`	`ihdr.Set("Content-Transfer-Encoding", "8bit")`
`87`	`89`
`88`	`90`	`hdr.Del("Content-Type")`