fix for values with encoded equal signs

jhillyerd · Apr 27, 2023 · cee000b · cee000b
1 parent 26de42c
commit cee000b
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/internal/coding/headerext.go b/internal/coding/headerext.go
@@ -54,7 +54,7 @@ func RFC2047Decode(s string) string {
 
 		default:
 			if decoded {
-				keyValuePair := strings.SplitAfter(s, "=")
+				keyValuePair := strings.SplitAfterN(s, "=", 2)
 				if len(keyValuePair) < 2 {
 					return s
 				}

diff --git a/mediatype/mediatype_test.go b/mediatype/mediatype_test.go
@@ -497,6 +497,12 @@ func TestParseMediaType(t *testing.T) {
 			mtype:  "multipart/alternative",
 			params: map[string]string{"boundary": "<myboundary>"},
 		},
+		{
+			label:  "encoded equal sign",
+			input:  "application/pdf; name=\"=?iso-8859-1?Q?key=3Dvalue?=\"",
+			mtype:  "application/pdf",
+			params: map[string]string{"name": "key=value"},
+		},
 	}
 	for _, tc := range testCases {
 		t.Run(tc.label, func(t *testing.T) {