internal static string CanonicalizedHeaders(HttpRequestHeaders headers)
{
var canonicalizedString = new CanonicalizedString(string.Empty);
var keyList =
headers.Where(h => h.Key.StartsWith("x-ms-", StringComparison.OrdinalIgnoreCase)).Select(header => header.Key).ToList();
keyList.Sort();
foreach (string str2 in keyList)
{
var builder = new StringBuilder(str2);
string str3 = ":";
foreach (string str4 in GetHeaderValues(headers, str2))
{
string str5 = str4.Replace("\r\n", string.Empty);
builder.Append(str3);
builder.Append(str5);
str3 = ",";
}
canonicalizedString.AppendCanonicalizedElement(builder.ToString());
}
return canonicalizedString.Value.TrimEnd('\n').TrimStart('\n');
}
internal static string GetCanonicalizedResourceVersion2(Uri address, string accountName)
{
var builder = new StringBuilder("/");
builder.Append(accountName);
builder.Append(address.AbsolutePath);
var str = new CanonicalizedString(builder.ToString());
NameValueCollection values = HttpUtility.ParseQueryString(address.Query);
var values2 = new NameValueCollection();
foreach (string str2 in values.Keys)
{
var list = new ArrayList(values.GetValues(str2));
list.Sort();
var builder2 = new StringBuilder();
foreach (object obj2 in list)
{
if (builder2.Length > 0)
{
builder2.Append(",");
}
builder2.Append(obj2.ToString());
}
values2.Add((str2 == null) ? str2 : str2.ToLowerInvariant(), builder2.ToString());
}
var list2 = new ArrayList(values2.AllKeys);
list2.Sort();
foreach (string str3 in list2)
{
var builder3 = new StringBuilder(string.Empty);
builder3.Append(str3);
builder3.Append(":");
builder3.Append(values2[str3]);
str.AppendCanonicalizedElement(builder3.ToString());
}
return str.Value;
}
internal static void Sign(this HttpRequestMessage request, CloudStorageAccount account)
{
string str = DateTime.UtcNow.ToString("R", CultureInfo.InvariantCulture);
var headerName = request.Headers.Where(h => h.Key.Equals("x-ms-date", StringComparison.OrdinalIgnoreCase)).Select(header => header.Key).FirstOrDefault();
if (!string.IsNullOrEmpty(headerName))
request.Headers.Remove(headerName);
request.Headers.Add("x-ms-date", str);
var canonicalizedString = new CanonicalizedString(request.Method.ToString());
if (request.Content == null)
{
canonicalizedString.AppendCanonicalizedElement(string.Empty);
canonicalizedString.AppendCanonicalizedElement(string.Empty);
if (request.Method == HttpMethod.Put || request.Method == HttpMethod.Post || request.Method == HttpMethod.Delete)
canonicalizedString.AppendCanonicalizedElement("0");
else
{
canonicalizedString.AppendCanonicalizedElement(string.Empty);
}
canonicalizedString.AppendCanonicalizedElement(string.Empty);
canonicalizedString.AppendCanonicalizedElement(string.Empty);
}
else
{
canonicalizedString.AppendCanonicalizedElement(request.Content.Headers.ContentEncoding.ToString());
canonicalizedString.AppendCanonicalizedElement(request.Content.Headers.ContentLanguage.ToString());
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentLength > 0) ? request.Content.Headers.ContentLength.ToString() : string.Empty);
canonicalizedString.AppendCanonicalizedElement(
request.Content.Headers.ContentMD5 != null
? request.Content.Headers.ContentMD5.ToString()
: string.Empty);
canonicalizedString.AppendCanonicalizedElement(request.Content.Headers.ContentType.ToString());
}
canonicalizedString.AppendCanonicalizedElement(string.Empty);
canonicalizedString.AppendCanonicalizedElement(request.Headers.IfModifiedSince.ToString());
canonicalizedString.AppendCanonicalizedElement(request.Headers.IfMatch.ToString());
canonicalizedString.AppendCanonicalizedElement(request.Headers.IfNoneMatch.ToString());
canonicalizedString.AppendCanonicalizedElement(request.Headers.IfUnmodifiedSince.ToString());
canonicalizedString.AppendCanonicalizedElement(request.Headers.Range != null ? request.Headers.Range.ToString() : string.Empty);
canonicalizedString.AppendCanonicalizedElement(CanonicalizedHeaders(request.Headers));
canonicalizedString.AppendCanonicalizedElement(
GetCanonicalizedResourceVersion2(
request.RequestUri, account.Credentials.AccountName).TrimEnd('\n'));
var stringToSign = canonicalizedString.Value;
string signedString = account.Credentials.ComputeHmac(stringToSign);
headerName = request.Headers.Where(h => h.Key.Equals("Authorization", StringComparison.OrdinalIgnoreCase)).Select(header => header.Key).FirstOrDefault();
if (!string.IsNullOrEmpty(headerName))
request.Headers.Remove(headerName);
request.Headers.Add("Authorization", string.Format(CultureInfo.InvariantCulture, "SharedKey {0}:{1}", new object[] { account.Credentials.AccountName, signedString }));
}
