New: CheckForUpdates to support CDN cache

Author: rzander

RZ.Base/RZRestAPIv2.cs

@@ -7,6 +7,8 @@
 using System.Net;
 using System.Net.Http;
 using System.Net.Sockets;
+using System.Numerics;
+using System.Security.Cryptography;
 using System.Text;
 using System.Threading.Tasks;
 using System.Web.Script.Serialization;
@@ -333,9 +335,10 @@ public static List<AddSoftware> CheckForUpdate(List<AddSoftware> lSoftware, stri
                 if (lSoftware.Count > 0)
                 {
                     JavaScriptSerializer ser = new JavaScriptSerializer();
-                    HttpContent oCont = new StringContent(ser.Serialize(lSoftware), Encoding.UTF8, "application/json");
-
-                    var response = oClient.PostAsync(sURL + "/rest/v2/checkforupdate", oCont);
+                    string sSoftware = ser.Serialize(lSoftware);
+                    HttpContent oCont = new StringContent(sSoftware, Encoding.UTF8, "application/json");
+                    string sHash = CalculateMD5HashString(sSoftware);
+                    var response = oClient.PostAsync(sURL + $"/rest/v2/checkforupdate/{sHash}", oCont);
                     response.Wait(120000); //2min max
                     if (response.IsCompleted)
                     {
@@ -353,6 +356,56 @@ public static List<AddSoftware> CheckForUpdate(List<AddSoftware> lSoftware, stri
             return new List<AddSoftware>();
         }
 
+        #region Hash
+        private const string Digits = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
+
+        private static byte[] CalculateMD5Hash(string input)
+        {
+            MD5 md5 = System.Security.Cryptography.MD5.Create();
+            byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);
+            byte[] hash = md5.ComputeHash(inputBytes);
+            byte[] mhash = new byte[hash.Length + 2];
+            hash.CopyTo(mhash, 2);
+            //Add Multihash identifier
+            mhash[0] = 0xD5; //MD5
+            mhash[1] = Convert.ToByte(hash.Length); //Hash legth
+            return mhash;
+        }
+
+        private static string Encode58(byte[] data)
+        {
+            // Decode byte[] to BigInteger
+            BigInteger intData = 0;
+            for (int i = 0; i < data.Length; i++)
+            {
+                intData = intData * 256 + data[i];
+            }
+
+            // Encode BigInteger to Base58 string
+            string result = "";
+            while (intData > 0)
+            {
+                int remainder = (int)(intData % 58);
+                intData /= 58;
+                result = Digits[remainder] + result;
+            }
+
+            // Append `1` for each leading 0 byte
+            for (int i = 0; i < data.Length && data[i] == 0; i++)
+            {
+                result = '1' + result;
+            }
+
+            return result;
+        }
+
+        public static string CalculateMD5HashString(string input)
+        {
+            return Encode58(CalculateMD5Hash(input));
+        }
+
+        #endregion
+
     }
 
     public class GetSoftware

RuckZuck_Tool/Properties/AssemblyInfo.cs

@@ -52,4 +52,4 @@
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("1.7.0.*")]
-[assembly: AssemblyFileVersion("1.7.0.5")]
+[assembly: AssemblyFileVersion("1.7.0.6")]

RuckZuck_Tool/RuckZuck_Tool.csproj

@@ -104,6 +104,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
+    <Reference Include="System.Numerics" />
     <Reference Include="System.Printing" />
     <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Security" />