Databases
StackOverflow2013
Postsdbo
POWorking with Azure in Winrt with Rest API, trouble with signature
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWorking with Azure in Winrt with Rest API, trouble with signature
    primarykey
    data
    text
    <p>I'm trying to work with azure storage in winrt. Since the azure storage client is not compatible with winrt I am trying to use azure's rest API. I am having a heck of a time getting the signature right and I could use another set of eyes to help me see where I'm going wrong.</p> <p>Azure Account provides a name and key property, this method builds up the request right now simply listing all blobs.</p> <p>'private async void BuildHTTPRequest(AzureAccount account) { System.Net.Http.HttpClient request = new HttpClient();</p> <pre><code> request.BaseAddress = new Uri(string.Format("http://{0}.blob.core.windows.net/", account.Name)); // Always have to use UTC date/time request.DefaultRequestHeaders.Add("x-ms-date", DateTime.UtcNow.ToString("R", CultureInfo.InvariantCulture)); string fmtStringToSign = "{0}\n{1}\n{2}\n{3:R}\n{4}{5}"; request.DefaultRequestHeaders.Add("x-ms-version", "2011-08-18"); string hdr = CanonicalizeHeaders(request.DefaultRequestHeaders); string authValue = string.Format(fmtStringToSign, "GET", "", "", "", hdr, ""); byte[] signatureByteForm = System.Text.Encoding.UTF8.GetBytes(authValue); string hashKey = account.Key; MacAlgorithmProvider macAlgorithmProvider = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA256"); BinaryStringEncoding encoding = BinaryStringEncoding.Utf8; var messageBuffer = CryptographicBuffer.ConvertStringToBinary(authValue, encoding); IBuffer keyBuffer = CryptographicBuffer.ConvertStringToBinary(hashKey, encoding); CryptographicKey hmacKey = macAlgorithmProvider.CreateKey(keyBuffer); IBuffer signedMessage = CryptographicEngine.Sign(hmacKey, messageBuffer); string hashedString = CryptographicBuffer.EncodeToBase64String(signedMessage); String authHeader = String.Format(CultureInfo.InvariantCulture, "{0} {1}:{2}", "SharedKey", account.Name, hashedString); request.DefaultRequestHeaders.Add("Authorization", authHeader); // Send the request to the queue try { var test1 = request.GetAsync("?comp=list").Result; if (test1.IsSuccessStatusCode) { } } catch (WebException ex) { } } </code></pre> <p>This should set the headers up for signing...</p> <pre><code>public string CanonicalizeHeaders(System.Net.Http.Headers.HttpRequestHeaders hdrCollection) { StringBuilder retVal = new StringBuilder();// Look for header names that start with "x-ms-" // Then sort them in case-insensitive manner. List&lt;string&gt; httpStorageHeaderNameArray = new List&lt;string&gt;(); Dictionary&lt;string, string&gt; ht = new Dictionary&lt;string, string&gt;(); foreach (var key in hdrCollection) { if (key.Key.ToLowerInvariant().StartsWith("x-ms-", StringComparison.Ordinal)) { if (ht.ContainsKey(key.Key.ToLowerInvariant())) { ht[key.Key.ToLowerInvariant()] = string.Format("{0},{1}", ht[key.Key.ToLowerInvariant()], hdrCollection.FirstOrDefault(m =&gt; m.Key == key.Key).ToString().Replace("\n", string.Empty).Replace("\r", string.Empty).Trim()); } else { httpStorageHeaderNameArray.Add(key.Key.ToLowerInvariant()); ht.Add(key.Key.ToLowerInvariant(), hdrCollection.FirstOrDefault(m =&gt; m.Key == key.Key).Value.FirstOrDefault().ToString().Replace("\n", string.Empty).Replace("\r", string.Empty).Trim()); } } } httpStorageHeaderNameArray.Sort();// Now go through each header's values in the sorted order and append them to the canonicalized string. foreach (string key in httpStorageHeaderNameArray) { retVal.AppendFormat("{0}:{1}\n", key.Trim(), ht[key]); } return retVal.ToString(); } </code></pre> <p>'</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USPaul Wade
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWorking with Azure in Winrt with Rest API, trouble with signature
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload