get_object_list not using prefix so not filtering

[capozzme]

In case anyone else runs into this issue.

I found that there was an issue on line 642 with the call to prep_aws_data. The p_query_string was passed in as null.

	l_signature := prep_aws_data (
		P_BUCKET				=> P_BUCKET,
		P_HTTP_METHOD				=> P_HTTP_METHOD,
		P_CANONICAL_URI				=> P_OBJECT,
                P_QUERY_STRING				=> NULL,
		P_DATE					=> l_date,
		P_CANONICAL_REQUEST		        => l_canonical_request,
		P_PAYLOAD_HASH				=> l_payload_hash,
		P_URL					=> l_url
		);

I changed Line 642 to
P_QUERY_STRING => P_QUERY_STRING

After this change I got
<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>

I found that this issue was in the canonical_request function.

On line 395 we were escaping the query string which was different then the url
l_query_string := aws4_escape(P_QUERY_STRING);

So the url we were calling was formatted like this
list-type=2&max-keys=1000&prefix=RRS
but the
query_string passed to
was
list-type=2%26max-keys=1000%26prefix=RRS
so the signature did not match

changed line 395 to
l_query_string := P_QUERY_STRING;

So short summary this works
Line 395 l_query_string := P_QUERY_STRING;
Line 642 P_QUERY_STRING => P_QUERY_STRING

`