add downloadToken

Author: shijiayun

Demo/Demo.cs

@@ -45,6 +45,8 @@ public static void Main()
             RSPutFile();
             ImageOps();
 
+            MakeDownloadToken();
+
             Console.ReadLine();
         }
 
@@ -181,6 +183,15 @@ public static void Drop()
             }
         }
 
+        public static void MakeDownloadToken()
+        {
+            Console.WriteLine("\n===> Auth.MakeDownloadToken");
+            string pattern = "*/*";
+            var downloadPolicy = new DownloadPolicy(pattern, 3600);
+            string dnToken = downloadPolicy.MakeAuthTokenString();
+            Console.WriteLine("dnToken: " + dnToken);
+        }
+
         public static void ImageOps()
         {
             Console.WriteLine("\n===> FileOp.ImageInfo");

QBox/Auth/AuthPolicy.cs

@@ -47,34 +47,7 @@ public string Marshal()
 
         public byte[] MakeAuthToken()
         {
-            Encoding encoding = Encoding.ASCII;
-            byte[] accessKey = encoding.GetBytes(Config.ACCESS_KEY);
-            byte[] secretKey = encoding.GetBytes(Config.SECRET_KEY);
-            byte[] upToken = null;
-            try
-            {
-                byte[] policyBase64 = encoding.GetBytes(Base64UrlSafe.Encode(Marshal()));
-                byte[] digestBase64 = null;
-                using (HMACSHA1 hmac = new HMACSHA1(secretKey))
-                {
-                    byte[] digest = hmac.ComputeHash(policyBase64);
-                    digestBase64 = encoding.GetBytes(Base64UrlSafe.Encode(digest));
-                }
-                using (MemoryStream buffer = new MemoryStream())
-                {
-                    buffer.Write(accessKey, 0, accessKey.Length);
-                    buffer.WriteByte((byte)':');
-                    buffer.Write(digestBase64, 0, digestBase64.Length);
-                    buffer.WriteByte((byte)':');
-                    buffer.Write(policyBase64, 0, policyBase64.Length);
-                    upToken = buffer.ToArray();
-                }
-            }
-            catch (Exception e)
-            {
-                Console.WriteLine(e.ToString());
-            }
-            return upToken;
+            return AuthToken.Make(Marshal());
         }
 
         public string MakeAuthTokenString()

QBox/Auth/AuthToken.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Text;
+using System.IO;
+using System.Security.Cryptography;
+using QBox.RS;
+using QBox.Util;
+
+namespace QBox.Auth
+{
+    public static class AuthToken
+    {
+        public static byte[] Make(string scope)
+        {
+            Encoding encoding = Encoding.ASCII;
+            byte[] accessKey = encoding.GetBytes(Config.ACCESS_KEY);
+            byte[] secretKey = encoding.GetBytes(Config.SECRET_KEY);
+            byte[] upToken = null;
+            try
+            {
+                byte[] policyBase64 = encoding.GetBytes(Base64UrlSafe.Encode(scope));
+                byte[] digestBase64 = null;
+                using (HMACSHA1 hmac = new HMACSHA1(secretKey))
+                {
+                    byte[] digest = hmac.ComputeHash(policyBase64);
+                    digestBase64 = encoding.GetBytes(Base64UrlSafe.Encode(digest));
+                }
+                using (MemoryStream buffer = new MemoryStream())
+                {
+                    buffer.Write(accessKey, 0, accessKey.Length);
+                    buffer.WriteByte((byte)':');
+                    buffer.Write(digestBase64, 0, digestBase64.Length);
+                    buffer.WriteByte((byte)':');
+                    buffer.Write(policyBase64, 0, policyBase64.Length);
+                    upToken = buffer.ToArray();
+                }
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.ToString());
+            }
+            return upToken;
+        }
+        
+    }
+}

QBox/Auth/DownloadPolicy.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Text;
+using System.IO;
+using System.Security.Cryptography;
+using LitJson;
+using QBox.RS;
+using QBox.Util;
+
+namespace QBox.Auth
+{
+    public class DownloadPolicy
+    {
+        public string Pattern { get; set; }
+        public long Deadline { get; set; }
+
+        public DownloadPolicy(string pattern, long expires)
+        {
+            Pattern = pattern;
+            DateTime begin = new DateTime(1970, 1, 1);
+            DateTime now = DateTime.Now;
+            TimeSpan interval = new TimeSpan(now.Ticks - begin.Ticks);
+            Deadline = (long)interval.TotalSeconds + expires;
+        }
+
+        public string Marshal()
+        {
+            JsonData data = new JsonData();
+            data["S"] = Pattern;
+            data["E"] = Deadline;
+            return data.ToJson();
+        }
+
+        public byte[] MakeAuthToken()
+        {
+            return AuthToken.Make(Marshal());
+        }
+
+        public string MakeAuthTokenString()
+        {
+            return Encoding.ASCII.GetString(MakeAuthToken());
+        }
+    }
+}

QBox/QBox.csproj

@@ -38,6 +38,8 @@
     <StartupObject />
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="Auth\AuthToken.cs" />
+    <Compile Include="Auth\DownloadPolicy.cs" />
     <Compile Include="Auth\PutAuthClient.cs" />
     <Compile Include="FileOp\ImageMogrifySpec.cs" />
     <Compile Include="FileOp\ImageViewSpec.cs" />