[cpp][pistache-server] Add void* userdata to HttpBasicCredentials.

This allows for data ft be passed on from the authenticator to the
handler implementation. For example a userid that has already been
looked up

Author: mowijo

modules/openapi-generator/src/main/resources/cpp-pistache-server/api-base-header.mustache

@@ -20,9 +20,10 @@ namespace {{apiNamespace}}
     {
         std::string user;
         std::string password;
+        std::unique_ptr<void, std::function<void(void*)>> userdata;
     } HttpBasicCredentials;
 
-    typedef std::function<bool(const HttpBasicCredentials &)> BasicCredentialsAuthenticator;
+    typedef std::function<bool(HttpBasicCredentials &)> BasicCredentialsAuthenticator;
     {{/isBasicBasic}}{{/authMethods}}
 
 
@@ -34,7 +35,7 @@ public:
     virtual void init() = 0;
 
     {{#authMethods}}{{#isBasicBasic}}
-    bool canCredentialsBeAccepted(const HttpBasicCredentials& credentials) const;
+    bool canCredentialsBeAccepted(HttpBasicCredentials& credentials) const;
     void setBasicCredentialsAuthenticator( const BasicCredentialsAuthenticator &newBasicCredentialsAuthenticator)
     {
         basicCredentialsAuthenticator = newBasicCredentialsAuthenticator;

modules/openapi-generator/src/main/resources/cpp-pistache-server/api-impl-source.mustache

@@ -16,25 +16,54 @@ using namespace {{modelNamespace}};{{/hasModelImport}}
     {{#authMethods}}{{#isBasicBasic}}/*
 
     Http Basic Auth
+    ===============
 
     Do this in the individual classes in the constructor
 
     this->setBasicCredentialsAuthenticator(
-    [](const HttpBasicCredentials &credentials)->bool
-    {
-        return credentials.user == "foo" && credentials.password == "bar";
-    }
-    );
+        [](HttpBasicCredentials &credentials)->bool
+        {
+            if(credentials.user == "foo" && credentials.password == "bar")
+            {
+
+                const int userIdOfFoo = 66;
+                credentials.userdata = std::unique_ptr<void, std::function<void(void*)>> (
+                    reinterpret_cast<void*>(new int(userIdOfFoo)),
+                    [&](void* ptr)
+                    {
+                        int * value = reinterpret_cast<int*>(ptr);
+                        delete value;
+                    }
+                );
+                return true;
+            }
+            return false;
+        }
+        );
 
     or in main:
 
     for (auto api : apiImpls) {
         api->init();
 
-          setBasicCredentialsAuthenticator(
-        [](const HttpBasicCredentials &credentials)->bool
+        api->setBasicCredentialsAuthenticator(
+        []( HttpBasicCredentials &credentials)->bool
         {
-            return credentials.user == "foo" && credentials.password == "bar";
+            if(credentials.user == "foo" && credentials.password == "bar")
+            {
+
+                const int userIdOfFoo = 66;
+                credentials.userdata = std::unique_ptr<void, std::function<void(void*)>> (
+                    reinterpret_cast<void*>(new int(userIdOfFoo)),
+                    [&](void* ptr)
+                    {
+                        int * value = reinterpret_cast<int*>(ptr);
+                        delete value;
+                    }
+                );
+                return true;
+            }
+            return false;
         }
         );
     }