anyRTC · suchafool · Jan 22, 2021 · Jan 22, 2021
diff --git a/DynamicKey/ARDynamicKey/README.md b/DynamicKey/ARDynamicKey/README.md
@@ -24,6 +24,7 @@ Sample Code for generating AccessToken are available on the following platforms:
  + Node.js
  + Python
  + PHP
+ + C#
 
 ### **YOUR IMPLEMENTATIONS ARE VERY WELCOME.**
 
@@ -205,3 +206,46 @@ if __name__ == "__main__":
 
 ```
 
+
+### C#
+```c#
+using AnyRtcTools;
+using System;
+
+namespace Sample
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var appID = "970CA35de60c44645bbae8a215061b33";
+            var appCertificate = "5CFd2fd1755d40ecb72977518be15d3b";
+            var channelName = "7d72365eb983485397e3e3f9d460bdda";
+            var userAccount = "2882341273";
+
+            var expireTimeInSeconds = 3600;
+            var currentTimestamp = DateTime.UtcNow.Subtract(
+                new DateTime(1970, 1, 1)).TotalSeconds;
+            var privilegeExpiredTs = (int)currentTimestamp 
+                + expireTimeInSeconds;
+
+            var token = new AccessToken(appID, 
+                appCertificate, channelName, userAccount);
+            token.AddPrivilege(AccessToken.kJoinChannel, 
+                privilegeExpiredTs);
+            //token.AddPrivilege(AccessToken.kPublishVideoStream, 
+            //    privilegeExpiredTs);
+            //token.AddPrivilege(AccessToken.kPublishAudioStream, 
+            //    privilegeExpiredTs);
+            //token.AddPrivilege(AccessToken.kPublishDataStream,    
+            //    privilegeExpiredTs);
+
+            Console.WriteLine(token.Build());
+
+            Console.ReadLine();
+        }
+    }
+}
+
+```
+
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.Tests/AccessTokenTest.cs b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.Tests/AccessTokenTest.cs
@@ -0,0 +1,43 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AnyRtcTools.Tests
+{
+    [TestClass]
+    public class AccessTokenTest
+    {
+        private string appID = "970CA35de60c44645bbae8a215061b33";
+        private string appCertificate = "5CFd2fd1755d40ecb72977518be15d3b";
+        private string channelName = "7d72365eb983485397e3e3f9d460bdda";
+        private string uid = "2882341273";
+        private int expireTimestamp = 1446455471;
+        private int salt = 1;
+        private int ts = 1111111;
+
+        [TestMethod]
+        public void TestBuild()
+        {
+            var expected = "006970CA35de60c44645bbae8a215061b33IACV0fZUBw+72cVoL9eyGGh3Q6Poi8bgjwVLnyKSJyOXR7dIfRBXoFHlEAABAAAAR/QQAAEAAQCvKDdW";
+
+            var key = new AccessToken(appID, appCertificate, channelName, uid);
+            key._salt = salt;
+            key._ts = ts;
+            key.AddPrivilege(AccessToken.kJoinChannel, expireTimestamp);
+
+            var result = key.Build();
+
+            Assert.AreEqual(expected, result);
+
+            // test uid = 0
+            expected = "006970CA35de60c44645bbae8a215061b33IACw1o7htY6ISdNRtku3p9tjTPi0jCKf9t49UHJhzCmL6bdIfRAAAAAAEAABAAAAR/QQAAEAAQCvKDdW";
+
+            var uid_zero = "";
+            key = new AccessToken(appID, appCertificate, channelName, uid_zero);
+            key._salt = salt;
+            key._ts = ts;
+            key.AddPrivilege(AccessToken.kJoinChannel, expireTimestamp);
+
+            result = key.Build();
+            Assert.AreEqual(expected, result);
+        }
+    }
+}
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.Tests/AnyRtcTools.Tests.csproj b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.Tests/AnyRtcTools.Tests.csproj
@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.2</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.3.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.3.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AnyRtcTools\AnyRtcTools.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.sln b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools.sln
@@ -0,0 +1,93 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.1340
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AnyRtcTools", "AnyRtcTools\AnyRtcTools.csproj", "{EB61A8BA-9739-44F0-A9AD-8A44E052922F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sample", "Sample\Sample.csproj", "{D79D4486-176D-4B73-9305-8F350A75C844}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AnyRtcTools.Tests", "AnyRtcTools.Tests\AnyRtcTools.Tests.csproj", "{931463CF-3D94-46F1-AE27-AB28369B1376}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|ARM = Debug|ARM
+		Debug|ARM64 = Debug|ARM64
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|ARM = Release|ARM
+		Release|ARM64 = Release|ARM64
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|ARM.Build.0 = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|x64.Build.0 = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Debug|x86.Build.0 = Debug|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|ARM.ActiveCfg = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|ARM.Build.0 = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|ARM64.ActiveCfg = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|ARM64.Build.0 = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|x64.ActiveCfg = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|x64.Build.0 = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|x86.ActiveCfg = Release|Any CPU
+		{EB61A8BA-9739-44F0-A9AD-8A44E052922F}.Release|x86.Build.0 = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|ARM.Build.0 = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|x64.Build.0 = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Debug|x86.Build.0 = Debug|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|ARM.ActiveCfg = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|ARM.Build.0 = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|ARM64.ActiveCfg = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|ARM64.Build.0 = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|x64.ActiveCfg = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|x64.Build.0 = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|x86.ActiveCfg = Release|Any CPU
+		{D79D4486-176D-4B73-9305-8F350A75C844}.Release|x86.Build.0 = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|ARM.Build.0 = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|x64.Build.0 = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Debug|x86.Build.0 = Debug|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|Any CPU.Build.0 = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|ARM.ActiveCfg = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|ARM.Build.0 = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|ARM64.ActiveCfg = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|ARM64.Build.0 = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|x64.ActiveCfg = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|x64.Build.0 = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|x86.ActiveCfg = Release|Any CPU
+		{931463CF-3D94-46F1-AE27-AB28369B1376}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2C01FC33-D2A5-4D79-923B-874A5EE99420}
+	EndGlobalSection
+EndGlobal
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/AccessToken.cs b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/AccessToken.cs
@@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace AnyRtcTools
+{
+    public class AccessToken
+    {
+        public const ushort kJoinChannel = 1;
+        public const ushort kPublishAudioStream = 2;
+        public const ushort kPublishVideoStream = 3;
+        public const ushort kPublishDataStream = 4;
+        public const ushort kPublishAudiocdn = 5;
+        public const ushort kPublishVideoCdn = 6;
+        public const ushort kRequestPublishAudioStream = 7;
+        public const ushort kRequestPublishVideoStream = 8;
+        public const ushort kRequestPublishDataStream = 9;
+        public const ushort kInvitePublishAudioStream = 10;
+        public const ushort kInvitePublishVideoStream = 11;
+        public const ushort kInvitePublishDataStream = 12;
+        public const ushort kAdministrateChannel = 101;
+        public const ushort kRtmLogin = 1000;
+
+        public const int VERSION_LENGTH = 3;
+        public const int APP_ID_LENGTH = 32;
+
+        private readonly string _appID;
+        private readonly string _appCertificate;
+        private readonly string _channelName;
+        private readonly string _uid;
+        public int _ts;
+        public int _salt;
+        private SortedDictionary<ushort, int> _messages;
+
+        public AccessToken(string appID, string appCertificate, string channelName, string uid)
+        {
+            _appID = appID;
+            _appCertificate = appCertificate;
+            _channelName = channelName;
+            _uid = uid;
+
+            _ts = (int)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalSeconds) + 24 * 3600;
+            var random = new Random();
+            _salt = random.Next(1, 99999999);
+        }
+
+        public void AddPrivilege(ushort privilege, int expireTimestamp)
+        {
+            if (_messages == null)
+            {
+                _messages = new SortedDictionary<ushort, int>();
+            }
+
+            _messages.Add(privilege, expireTimestamp);
+        }
+
+        public string Build()
+        {
+            if (_messages == null)
+            {
+                throw new Exception("Please specify some privileges first.");
+            }
+
+            var m = BitConverter.GetBytes(_salt)
+                .Concat(BitConverter.GetBytes(_ts))
+                .Concat(PackMapUint32(_messages));
+
+            var val = Encoding.UTF8.GetBytes(_appID)
+                .Concat(Encoding.UTF8.GetBytes(_channelName))
+                .Concat(Encoding.UTF8.GetBytes(_uid))
+                .Concat(m).ToArray();
+
+            HMACSHA256 hmacSha256 = new HMACSHA256(Encoding.UTF8.GetBytes(_appCertificate));
+            var signature = hmacSha256.ComputeHash(val);
+
+            var crc32 = new CRC32Cls();
+            var crc_channel_name = crc32.GetCRC32Str(_channelName) & 0xffffffff;
+            var crc_uid = crc32.GetCRC32Str(_uid) & 0xffffffff;
+
+            var content = PackString(signature)
+                            .Concat(BitConverter.GetBytes(crc_channel_name))
+                            .Concat(BitConverter.GetBytes(crc_uid))
+                            .Concat(PackString(m.ToArray())).ToArray();
+
+            return $"006{_appID}{Convert.ToBase64String(content)}";
+        }
+
+        private static byte[] PackString(byte[] strBytes)
+        {
+            return BitConverter.GetBytes((ushort)(strBytes.Length))
+                .Concat(strBytes).ToArray();
+        }
+
+        private static byte[] PackMapUint32(SortedDictionary<ushort, int> ms)
+        {
+            var m = BitConverter.GetBytes((ushort)(ms.Count));
+            IEnumerable<byte> ret = m.ToList();
+            foreach (var kvp in ms)
+            {
+                ret = ret.Concat(BitConverter.GetBytes(kvp.Key))
+                    .Concat(BitConverter.GetBytes(kvp.Value));
+            }
+            return ret.ToArray();
+        }
+    }
+}
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/AnyRtcTools.csproj b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/AnyRtcTools.csproj
@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/CRC32Cls.cs b/DynamicKey/ARDynamicKey/csharp/AnyRtcTools/CRC32Cls.cs
@@ -0,0 +1,49 @@
+using System.Text;
+
+namespace AnyRtcTools
+{
+    class CRC32Cls
+    {
+        /*
+         * 
+         * author: uusystem
+         * blog url:  https://www.cnblogs.com/tianjifa/p/9216985.html
+         * 
+         */
+        protected uint[] Crc32Table;
+        //生成CRC32码表
+        public void GetCRC32Table()
+        {
+            uint Crc;
+            Crc32Table = new uint[256];
+            int i, j;
+            for (i = 0; i < 256; i++)
+            {
+                Crc = (uint)i;
+                for (j = 8; j > 0; j--)
+                {
+                    if ((Crc & 1) == 1)
+                        Crc = (Crc >> 1) ^ 0xEDB88320;
+                    else
+                        Crc >>= 1;
+                }
+                Crc32Table[i] = Crc;
+            }
+        }
+
+        //获取字符串的CRC32校验值
+        public uint GetCRC32Str(string sInputString)
+        {
+            //生成码表
+            GetCRC32Table();
+            byte[] buffer = Encoding.UTF8.GetBytes(sInputString);
+            uint value = 0xffffffff;
+            int len = buffer.Length;
+            for (int i = 0; i < len; i++)
+            {
+                value = (value >> 8) ^ Crc32Table[(value & 0xFF) ^ buffer[i]];
+            }
+            return value ^ 0xffffffff;
+        }
+    }
+}