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Code Issues Releases Wiki Activity

Ensure that the hash value is put in lowercase on the wire

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This commit is contained in:
Florian Schmaus 2014-12-10 14:16:34 +01:00
parent 8bfc887f63
commit 4c2d5d797a
1 changed files with 5 additions and 0 deletions
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5
smack-extensions/src/main/java/org/jivesoftware/smackx/caps/EntityCapsManager.java
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@ -596,9 +596,14 @@ public class EntityCapsManager extends Manager {
if (hash == null) {
hash = DEFAULT_HASH;
}
// SUPPORTED_HASHES uses the format of MessageDigest, which is uppercase, e.g. "SHA-1" instead of "sha-1"
MessageDigest md = SUPPORTED_HASHES.get(hash.toUpperCase(Locale.US));
if (md == null)
return null;
// Then transform the hash to lowercase, as this value will be put on the wire within the caps element's hash
// attribute. I'm not sure if the standard is case insensitive here, but let's assume that even it is, there could
// be "broken" implementation in the wild, so we *always* transform to lowercase.
hash = hash.toLowerCase(Locale.US);
DataForm extendedInfo = DataForm.from(discoverInfo);