/// <summary>
/// Empaqquete un DIscoInfo
/// </summary>
/// <param name="info">DicoInfo</param>
/// <returns>Ampaquetage</returns>
public static string DiscoInfoToVersion(DiscoInfo info)
{
StringBuilder builder = new StringBuilder(256);
DiscoIdentity[] identities = info.GetIdentities();
string[] ids = new string[identities.Length];
for (int i = 0; i < identities.Length; i++)
{
ids[i] = string.Format("{0}/{1}", identities[i].Category, identities[i].Type);
}
Array.Sort(ids);
foreach (string id in ids)
{
builder.AppendFormat("{0}<", id);
}
DiscoFeature[] features = info.GetFeatures();
string[] feas = new string[features.Length];
for (int i = 0; i < features.Length; i++)
{
feas[i] = features[i].Var;
}
Array.Sort(feas);
foreach (string fea in feas)
{
builder.AppendFormat("{0}<", fea);
}
SHA1Managed sha1 = new SHA1Managed();
byte[] hash = sha1.ComputeHash(Encoding.Unicode.GetBytes(builder.ToString()));
return Convert.ToBase64String(hash);
}
public void AddToCache(Capabilities capabilities, DiscoInfo discoInfo)
{
if (discoInfo.GetFeatures().Length > 0)
{
lock (_cacheLock)
{
string caps = GetCapsString(capabilities);
_cache[GetCapsString(capabilities)] = discoInfo;
Database.SaveCapsCache(caps, discoInfo.ToString());
}
}
}
private string BuildCapsVersion(DiscoInfo di)
{
/*
1. Initialize an empty string S.
2. Sort the service discovery identities by category and then by type (if it exists), formatted as 'category' '/' 'type'.
3. For each identity, append the 'category/type' to S, followed by the '<' character.
4. Sort the supported features.
5. For each feature, append the feature to S, followed by the '<' character.
6. Compute ver by hashing S using the SHA-1 algorithm as specified in RFC 3174 [17] (with binary output) and
encoding the hash using Base64 as specified in Section 4 of RFC 4648 [18]
(note: the Base64 output MUST NOT include whitespace and MUST set padding bits to zero). [19]
*/
ArrayList features = new ArrayList();
ArrayList identities = new ArrayList();
foreach (DiscoIdentity did in di.GetIdentities())
identities.Add(did.Type == null ? did.Category : did.Category + "/" + did.Type);
foreach (DiscoFeature df in di.GetFeatures())
features.Add(df.Var);
identities.Sort();
features.Sort();
StringBuilder S = new StringBuilder();
foreach (string s in identities)
S.Append(s + "<");
foreach (string s in features)
S.Append(s + "<");
byte[] sha1 = util.Hash.Sha1HashBytes(S.ToString());
#if CF
return Convert.ToBase64String(sha1, 0, sha1.Length);
#else
return Convert.ToBase64String(sha1);
#endif
}