encoding/asn1: UTF8String being unmarshalled as PrintableString and failing #8541
Description
> What does 'go version' print? go version go1.3 linux/amd64 > What steps reproduce the problem? Attempt to unmarshal a string with non-PrintableString characters in a field with a context-specific tag and no EXPLICIT: http://play.golang.org/p/5bGjMTiq93 > What happened? The Broken case returns an error. > What should have happened instead? Both cases should work. Most unexpected, note that the "utf8" parameter has no effect when "tag:1" is present. Adding "explicit" makes Broken work. Looking at the marshalling output, the Works does properly produce a UTF8String. I think the problem is that the switch in https://code.google.com/p/go/source/browse/src/pkg/encoding/asn1/asn1.go?name=go1.3.1#798 is seeing tagPrintableString because https://code.google.com/p/go/source/browse/src/pkg/encoding/asn1/asn1.go?name=go1.3.1#643 doesn't match in the case of non-universal tags. I see no reference to param.stringType in the unmarshaller, which is an indication this code does not handle the (non-explicit) context-specific tags case. I propose the following patch, falling back to using param.stringType if the on-wire tag doesn't provide a clue.
Attachments:
- asn1printablestring.diff (1451 bytes)