cpp secret

Author: UnixY2K

.vscode/launch.json

@@ -34,6 +34,7 @@
             "preLaunchTask": "build C# project",
             "program": "${workspaceFolder}/csharp/bin/Debug/net6.0/csharp-cross-platform.dll",
             "args": [],
+            "justMyCode": false,
             "cwd": "${workspaceFolder}/csharp",
             "environment": [
                 {

README.md

@@ -2,6 +2,24 @@
 
 App Center Interop example for c++/c#(winforms).
 
+# App Center Build with this project
+
+> this steps will be called from the custom build scripts on App Center
+> So you will need to set the following environment variables
+> APPCENTER_APP_SECRET
+
+- on this example the c++ project will contain the app center application secret
+- build the project with the secret like this:
+  ```ps1
+  meson builddir '-DAPPCENTER_APP_SECRET="<your secret>"'
+  cd builddir
+  meson compile
+  ```
+- this will generate a dll that needs to be copied to the c# project binary folder
+- do the common steps for the c# project
+
+# From scratch guide
+
 ## C# first Steps
 
 - Create a new C# project.

cpp/meson.build

@@ -16,6 +16,11 @@ if host_machine.system() == 'linux'
     myApp_deps += [gtkmm_dep]
 endif
 
+## add app center app secret to arguments
+myApp_args += [
+    '-DAPPCENTER_APP_SECRET="'+get_option('APPCENTER_APP_SECRET')+'"',
+]
+
 
 # we compile the c++ application as a shared library
 myApp_lib = library('myapp',

cpp/src/main.cpp

@@ -2,6 +2,10 @@
 #include <dialogBox.hpp>
 #include <iostream>
 
+#ifndef APPCENTER_APP_SECRET
+#define APPCENTER_APP_SECRET ""
+#endif
+
 #define myAppLIBRARY_EXPORT
 #include <exportAPI.hpp>
 
@@ -24,5 +28,9 @@ myAppAPI void setupAppCenterCallbacks(
 	Interop::AppCenter::setTrackEventCallback(trackEventCallback);
 	Interop::AppCenter::setTrackEventCallback(trackEventExtraCallback);
 }
-
+// this will retrieve the AppCenter app secret
+myAppAPI const char* getAppCenterAppSecret() {
+	constexpr const char *appSecret = APPCENTER_APP_SECRET;
+	return appSecret;
+}
 }

csharp/csharp.csproj

@@ -6,12 +6,14 @@
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>2116154c-7e25-4d69-b324-cdf42e3a7b68</UserSecretsId>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AppCenter" Version="4.4.0" />
     <PackageReference Include="Microsoft.AppCenter.Analytics" Version="4.4.0" />
     <PackageReference Include="Microsoft.AppCenter.Crashes" Version="4.4.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.0" />
   </ItemGroup>
 
 </Project>

csharp/source/Program.cs

@@ -7,6 +7,9 @@ namespace csharp;
 using Microsoft.AppCenter.Analytics;
 using Microsoft.AppCenter.Crashes;
 
+// secrets
+using Microsoft.Extensions.Configuration;
+
 static class Program
 {
     /// <summary>
@@ -26,7 +29,7 @@ static void Main()
             Crashes.TrackError(args.Exception);
         };
         // this will start the App Center SDK
-        AppCenter.Start("{Your App Secret}", typeof(Analytics), typeof(Crashes));
+        AppCenter.Start(AppCenterCpp.getAppSecret(), typeof(Analytics), typeof(Crashes));
         // this will setup the callbacks for C++
         AppCenterCpp.setup();
         // this will initialize the C++ app

csharp/source/interop/AppCenter.cs

@@ -25,20 +25,28 @@ public static void initApp()
         dllEntry();
     }
 
+    public static string getAppSecret()
+    {
+        var result = getAppCenterAppSecret();
+        var strResult = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(result);
+        return strResult ?? "";
+    }
+
+    [DllImport("myApp")]
+    private static extern IntPtr getAppCenterAppSecret();
+
     // the C++ dll entry point
-    [DllImport("myApp.dll", EntryPoint = "dllEntry")]
+    [DllImport("myApp", EntryPoint = "dllEntry")]
     private static extern void dllEntry();
-    [DllImport("myApp.dll")]
+    [DllImport("myApp")]
     private static extern void setupAppCenterCallbacks(TrackEventDelegate normal, TrackEventExtraDelegate extra);
 
     private static void trackEventFunc(string eventName)
     {
-        Console.WriteLine("trackEventFunc: " + eventName);
         Analytics.TrackEvent(eventName);
     }
     private static void trackEventFunc(string eventName, string properties)
     {
-        Console.WriteLine("trackEventFunc: " + eventName + " " + properties);
         // convert the properties string(json) to a dictionary
         var props = JsonConvert.DeserializeObject<Dictionary<string, string>>(properties);
         Analytics.TrackEvent(eventName, props);

meson_options.txt

@@ -0,0 +1 @@
+option('APPCENTER_APP_SECRET', type : 'string', value : '', description : 'AppCenter app secret')