azure REST API communication - rest

Question

I'm currently trying retrieve list share available in my Azure account from salesforce. I'm trying to implement the example from below sample code:
https://learn.microsoft.com/en-us/rest/api/storageservices/list-shares#samplerequestandresponse
//private key: access key of my account
string storageKey =private key;
string storageName = 'accountName';
Datetime dt = Datetime.now();
string formattedDate = dt.formatGMT('EEE, dd MMM yyyy HH:mm:ss')+ ' GMT';
system.debug('formattedDate--'+formattedDate);
string CanonicalizedHeaders = 'x-ms-date:'+formattedDate+'\nx-ms-version:2016-05-31';
string CanonicalizedResource = '/' + storageName + '/\ncomp:list';
string StringToSign = 'GET\n\n\n\n\n\n\n\n\n\n\n\n' + CanonicalizedHeaders+'\n'+CanonicalizedResource;
system.debug('StringToSign--'+StringToSign);
Blob temp = EncodingUtil.base64Decode(storageKey);
Blob hmac = Crypto.generateMac('HmacSHA256',Blob.valueOf(StringToSign),temp ); //StringToSign
system.debug('oo-'+EncodingUtil.base64Encode(hmac));
HttpRequest req = new HttpRequest();
req.setMethod('GET');
//req.setHeader('content-type', 'application/xml');
req.setHeader('x-ms-version','2016-05-31' );
req.setHeader('x-ms-date', formattedDate);
string signature = EncodingUtil.base64Encode(hmac);
string authHeader = 'SharedKey salesforcestrongaccount'+':'+signature;
req.setHeader('Authorization',authHeader);
req.setEndpoint('https://<accountName>.file.core.windows.net/?comp=list');
Http http = new Http();
HTTPResponse res;
res = http.send(req);
System.debug(LoggingLevel.INFO, 'http.send result status: ' + res.getStatus());
Any help?

Answer 1

As Gaurav Mantri says, there are something wrong with your stringToSign. So you will get this error.
The right Shared Key Authentication is like this:
StringToSign = VERB + "\n" +
Content-Encoding + "\n" +
Content-Language + "\n" +
Content-Length + "\n" +
Content-MD5 + "\n" +
Content-Type + "\n" +
Date + "\n" +
If-Modified-Since + "\n" +
If-Match + "\n" +
If-None-Match + "\n" +
If-Unmodified-Since + "\n" +
Range + "\n" +
CanonicalizedHeaders +
CanonicalizedResource;
Here I create a test demo, you could refer to it.
List share:
string storageAccount = "storage account";
string accessKey = "accountkey";
string resourcePath = "?comp=list";
string uri = #"https://" + storageAccount + ".file.core.windows.net/" + resourcePath;
// Web request
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
request.Method = "GET";
request.Headers["x-ms-date"] = DateTime.UtcNow.ToString("R", System.Globalization.CultureInfo.InvariantCulture);
request.Headers["x-ms-version"] = "2015-02-21";
String stringToSign = "GET\n"
+ "\n" // content encoding
+ "\n" // content language
+ "\n" // content length
+ "\n" // content md5
+ "\n" // content type
+ "\n" // date
+ "\n" // if modified since
+ "\n" // if match
+ "\n" // if none match
+ "\n" // if unmodified since
+ "\n" // range
+ "x-ms-date:" + request.Headers["x-ms-date"] + "\nx-ms-version:2015-02-21\n" // headers
+ "/" + storageAccount + "/" + "\ncomp:list"; // resources
System.Security.Cryptography.HMACSHA256 hasher = new System.Security.Cryptography.HMACSHA256(Convert.FromBase64String(accessKey));
string strAuthorization = "SharedKey " + storageAccount + ":" + System.Convert.ToBase64String(hasher.ComputeHash(System.Text.Encoding.UTF8.GetBytes(stringToSign)));
request.Headers["Authorization"] = strAuthorization;
Task<WebResponse> response = request.GetResponseAsync();
HttpWebResponse responseresult = (HttpWebResponse)response.Result;
using (System.IO.StreamReader r = new System.IO.StreamReader(responseresult.GetResponseStream()))
{
string jsonData = r.ReadToEnd();
Console.WriteLine(jsonData);
}
Result:
Java:
private static final String account = "accountname";
private static final String key = "Key";
public static void main(String args[]) throws Exception {
// String urlString = "http://" + account + ".file.core.windows.net/sampleshare/name.txt";
String urlString = "https://" + account + ".file.core.windows.net/?comp=list";
HttpURLConnection connection = (HttpURLConnection) (new URL(urlString)).openConnection();
getFileRequest(connection, account, key);
connection.connect();
System.out.println("Response message : " + connection.getResponseMessage());
System.out.println("Response code : " + connection.getResponseCode());
BufferedReader br = null;
if (connection.getResponseCode() != 200) {
br = new BufferedReader(new InputStreamReader((connection.getErrorStream())));
} else {
br = new BufferedReader(new InputStreamReader((connection.getInputStream())));
}
System.out.println("Response body : " + br.readLine());
}
public static void getFileRequest(HttpURLConnection request, String account, String key) throws Exception {
SimpleDateFormat fmt = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss");
fmt.setTimeZone(TimeZone.getTimeZone("GMT"));
String date = fmt.format(Calendar.getInstance().getTime()) + " GMT";
String stringToSign = "GET\n" + "\n" // content encoding
+ "\n" // content language
+ "\n" // content length
+ "\n" // content md5
+ "\n" // content type
+ "\n" // date
+ "\n" // if modified since
+ "\n" // if match
+ "\n" // if none match
+ "\n" // if unmodified since
+ "\n" // range
+ "x-ms-date:" + date + "\nx-ms-version:2015-02-21\n" // headers
+ "/" + account + request.getURL().getPath() + "\ncomp:list"; // resources
System.out.println("stringToSign : " + stringToSign);
String auth = getAuthenticationString(stringToSign);
request.setRequestMethod("GET");
request.setRequestProperty("x-ms-date", date);
request.setRequestProperty("x-ms-version", "2015-02-21");
request.setRequestProperty("Authorization", auth);
}
private static String getAuthenticationString(String stringToSign) throws Exception {
Mac mac = Mac.getInstance("HmacSHA256");
mac.init(new SecretKeySpec(Base64.decode(key), "HmacSHA256"));
String authKey = new String(Base64.encode(mac.doFinal(stringToSign.getBytes("UTF-8"))));
String auth = "SharedKey " + account + ":" + authKey;
return auth;
}