If you are using Net::Twitter in Perl, the developer released a new release today that now correctly handles OAuth and Unicode-related issues.
http://search.cpan.org/dist/Net-Twitter/ On Jul 28, 3:21 pm, Scott Carter <scarter28m-goo...@yahoo.com> wrote: > This post is geared toward Perl implementations of OAuth, though it > may shed some light on recent URI escape problems in other languages > as well. > > use Encode qw(encode); > use URI::Escape; > > I previously had been escaping my parameters with a call such as: > my $value = uri_escape(encode("UTF-8",$param)); > > The encode() call was encoding the $param as UTF-8 octets before > percent encoding with uri_escape(). > > The use of uri_escape() above is NOT correct to meet the requirements > of the OAuth spec. The following is the explanation and fix: > > # OAUTH spec URI encoding > # ========================= > # > #http://oauth.net/core/1.0a#encoding_parameters > # with reference to > #http://tools.ietf.org/html/rfc3986#section-2.3 > # > # 5.1. Parameter Encoding > # > # All parameter names and values are escaped using the [RFC3986] > # percent-encoding (%xx) mechanism. Characters not in the > unreserved character > # set MUST be encoded. Characters in the unreserved character > # set MUST NOT be encoded. Hexadecimal characters in encodings > MUST be upper case. > # Text names and values MUST be encoded as UTF-8 octets before > percent-encoding > # them per [RFC3629] > # > # unreserved = ALPHA, DIGIT, '-', '.', '_', '~' > # > # > # URI::Escape > # ============= > #http://search.cpan.org/~gaas/URI-1.38/URI/Escape.pm > # uri_escape() by default encodes > # "^A-Za-z0-9\-_.!~*'()" > # > # We must subtract from this the reserved characters: ! * ' ( ) > # "^A-Za-z0-9\-_.~" > # > > The correct assignment in Perl is thus: > my $value = uri_escape(encode("UTF-8",$param),"^A-Za-z0-9\-_.~"); > > I've tested this and it fixed the problems I was having sending > characters "! " "*" etc. > > I suspect percent encoding in other languages may need a similar > implementation. > > - Scott > @scott_carterhttp://www.bigtweet.com/
