/// <summary>
/// Get the reassembled cookie. Non chunked cookies are returned normally.
/// Cookies with missing chunks just have their "chunks:XX" header returned.
/// </summary>
/// <param name="context"></param>
/// <param name="key"></param>
/// <returns>The reassembled cookie, if any, or null.</returns>
public string GetRequestCookie(IOwinContext context, string key)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
var webContext = context.Get <HttpContextBase>(typeof(HttpContextBase).FullName);
if (webContext == null)
{
return(Fallback.GetRequestCookie(context, key));
}
var requestCookies = webContext.Request.Cookies;
var escapedKey = Uri.EscapeDataString(key);
var cookie = requestCookies[escapedKey];
if (cookie == null)
{
return(null);
}
var value = cookie.Value;
int chunksCount = ParseChunksCount(value);
if (chunksCount > 0)
{
bool quoted = false;
string[] chunks = new string[chunksCount];
for (int chunkId = 1; chunkId <= chunksCount; chunkId++)
{
cookie = requestCookies[escapedKey + "C" + chunkId.ToString(CultureInfo.InvariantCulture)];
if (cookie == null)
{
if (ThrowForPartialCookies)
{
int totalSize = 0;
for (int i = 0; i < chunkId - 1; i++)
{
totalSize += chunks[i].Length;
}
throw new FormatException(
string.Format(CultureInfo.CurrentCulture, Resources.Exception_ImcompleteChunkedCookie, chunkId - 1, chunksCount, totalSize));
}
// Missing chunk, abort by returning the original cookie value. It may have been a false positive?
return(Uri.UnescapeDataString(value));
}
string chunk = cookie.Value;
if (IsQuoted(chunk))
{
// Note: Since we assume these cookies were generated by our code, then we can assume that if one cookie has quotes then they all do.
quoted = true;
chunk = RemoveQuotes(chunk);
}
chunks[chunkId - 1] = chunk;
}
string merged = string.Join(string.Empty, chunks);
if (quoted)
{
merged = Quote(merged);
}
return(Uri.UnescapeDataString(merged));
}
return(Uri.UnescapeDataString(value));
}
