implemented jsn encoding for req and responses

CMakeLists.txt

@@ -45,6 +45,15 @@ if(NOT expected_POPULATED)
   FetchContent_Populate(expected)
 endif(NOT expected_POPULATED)
 
+find_package(Doxygen
+             REQUIRED dot
+             OPTIONAL_COMPONENTS mscgen dia)
+set(DOXYGEN_HAVE_DOT YES)
+doxygen_add_docs(
+    doc
+    src
+    COMMENT "Generate dcoumentation"
+)
 set(API_SOURCES src/main.cpp src/model.cpp src/model.hpp)
 add_executable(oc-mint ${API_SOURCES})
 target_link_libraries(oc-mint PRIVATE Crow::Crow INTERFACE tl::expected::expected)

src/main.cpp

@@ -1,72 +1,96 @@
-#include "crow/http_response.h"
-#include "crow/json.h"
-#include <optional>
-
 #include "crow.h"
-
 #include "model.hpp"
 
-
 int main()
 {
     crow::SimpleApp app;
     std::shared_ptr<Model> model = Model::getModel("simple");
 
-    CROW_ROUTE(app, "/cddc")//.methods(crow::HTTPMethod::GET)
+    CROW_ROUTE(app, "/cddc")
       ([&model](const crow::request& req){
-	auto json = crow::json::load(req.body);
+	auto req_cddc = RequestCDDC::from_string(req.body);
-	if (!json) {
+	if (!req_cddc) {
-	  return crow::response(crow::status::BAD_REQUEST,
+	  return crow::response(crow::status::BAD_REQUEST);
-				"json parse error");
 	} else {
-	  auto req_cddc = RequestCDDC::from_json(json);
+	  ResponseCDDC res;
-	  if (!req_cddc)
+	  // TBD use serial from req
-	    return crow::response(crow::status::BAD_REQUEST,
+	  res.cddc = model->getCDDC();
-				  "json decode error ");
+	  res.message_reference = req_cddc->message_reference;
-	  else {
+	  res.status_code = crow::status::OK;
-	    ResponseCDDC res;
+	  return crow::response(res.to_json());
-	    // TBD use serial from req
-	    res.cddc = model->getCDDC();
-	    res.message_reference = req_cddc->message_reference;
-	    res.status_code = 200;
-	    return crow::response(res.to_json());
-	  }
 	}
       });
 
-    CROW_ROUTE(app, "/cddc/serial").methods(crow::HTTPMethod::GET)
+    CROW_ROUTE(app, "/cddc/serial")
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestCDDSerial::from_string(request.body);
+	if (!req) {
+	  return crow::response(crow::status::BAD_REQUEST);
+	} else {
+	  // \todo check serial input
+	  ResponseCDDSerial res;
+	  res.cdd_serial = model->getCurrentCDDC().cdd.cdd_serial;
+	  res.message_reference = req->message_reference;
+	  res.status_code = crow::status::OK;
+	  return crow::response(res.to_json());
+	}
     });
 
-    CROW_ROUTE(app, "/mkcs").methods(crow::HTTPMethod::GET)
+    CROW_ROUTE(app, "/mkcs")
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestMKCs::from_string(request.body);
-    });
+	if (!req) {
+	  return crow::response(crow::status::BAD_REQUEST);
+	} else {
+	  // \todo implement request
+	  return crow::response(crow::status::NOT_IMPLEMENTED);
+	}
+      });
 
     CROW_ROUTE(app, "/mint").methods(crow::HTTPMethod::GET)
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestMint::from_string(request.body);
-    });
+	if (!req) {
+	  return crow::response(crow::status::BAD_REQUEST);
+	} else {
+	  // \todo implement request
+	  return crow::response(crow::status::NOT_IMPLEMENTED);
+	}
+      });
 
 
     CROW_ROUTE(app, "/renew").methods(crow::HTTPMethod::GET)
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestMint::from_string(request.body);
-    });
+	if (!req) {
+	  return crow::response(crow::status::BAD_REQUEST);
+	} else {
+	  // \todo implement request
+	  return crow::response(crow::status::NOT_IMPLEMENTED);
+	}
+      });
 
     CROW_ROUTE(app, "/resume").methods(crow::HTTPMethod::GET)
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestResume::from_string(request.body);
-    });
+	if (!req) {
+	  return crow::response(crow::status::BAD_REQUEST);
+	} else {
+	  // \todo implement request
+	  return crow::response(crow::status::NOT_IMPLEMENTED);
+	}
+      });
 
     CROW_ROUTE(app, "/redeem").methods(crow::HTTPMethod::GET)
-      ([](){
+      ([&model](const crow::request& request){
-	return crow::response(crow::status::NOT_IMPLEMENTED);
+	auto req = RequestRedeem::from_string(request.body);
-    });
+	if (!req) {
-
+	  return crow::response(crow::status::BAD_REQUEST);
-    
+	} else {
-    
+	  // \todo implement request
+	  return crow::response(crow::status::NOT_IMPLEMENTED);
+	}
+      });
 
     app.port(18080).run();
 }

src/model.cpp

@@ -3,7 +3,7 @@
 
 #define TO_JSON(name) r[#name]=name
 #define TO_JSON_JSON(name) r[#name]=name.to_json()
-#define SEQ_TO_JSON(name) r[#name]=list_to_json(name)
+#define TO_JSON_ARRAY(name) r[#name]=list_to_json(name)
 
 template <class T>
 crow::json::wvalue list_to_json(const std::vector<T>& array) {
@@ -49,15 +49,15 @@ crow::json::wvalue CDD::to_json() const {
   TO_JSON(cdd_signing_date);
   TO_JSON(currency_divisor);
   TO_JSON( currency_name);
-  SEQ_TO_JSON(denominations);
+  TO_JSON_ARRAY(denominations);
   TO_JSON(id);
-  SEQ_TO_JSON(info_service);
+  TO_JSON_ARRAY(info_service);
   TO_JSON(issuer_cipher_suite);
   TO_JSON_JSON(issuer_public_master_key);
-  SEQ_TO_JSON(mint_service);
+  TO_JSON_ARRAY(mint_service);
   TO_JSON(protocol_version); 
-  SEQ_TO_JSON(redeem_service);
+  TO_JSON_ARRAY(redeem_service);
-  SEQ_TO_JSON(renew_service); 
+  TO_JSON_ARRAY(renew_service); 
 
   r["type"]= "cdd";
   return r;
@@ -97,36 +97,223 @@ crow::json::wvalue MintKeyCert::to_json() const {
   return r;
 }
 
-crow::json::wvalue ResponseCDDC::to_json() const
+crow::json::wvalue Response::to_json() const
 {
   crow::json::wvalue r;
-  TO_JSON_JSON(cddc);
   TO_JSON(message_reference);
   TO_JSON(status_code);
   TO_JSON(status_description);
-  
-  r["type"]= "response cddc";
   return r;
 }
-std::optional<RequestCDDC> RequestCDDC::from_json(const crow::json::rvalue & json) {
 
-  if (json.has("cdd_serial")&&json.has("message_reference")) {
+
-    auto r = std::make_optional<RequestCDDC>();
+crow::json::wvalue ResponseCDDSerial::to_json() const
-    r->cdd_serial=json["cdd_serial"].u();
+{
-    r->message_reference= json["message_reference"].u();
+  crow::json::wvalue r = Response::to_json();
+  TO_JSON(cdd_serial);
+  
+  r["type"]= "response cdd serial";
+  return r;
+}
+
+tl::expected<RequestCDDSerial,eError>
+RequestCDDSerial::from_string(const std::string& str)
+{
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else if (!json.has("message_reference")) {
+    return tl::make_unexpected(eError::JSON_ERROR);
+  } else {
+    RequestCDDSerial r;
+    r.message_reference= json["message_reference"].u();
     return r;
   }
-  else {
-    return std::nullopt;
-  }
 }
 
-/** blafasel */
+crow::json::wvalue ResponseCDDC::to_json() const
+{
+  crow::json::wvalue r = Response::to_json();
+  TO_JSON_JSON(cddc);
+  r["type"]= "response cdd serial";
+  return r;
+}
+
+tl::expected<RequestCDDC,eError>
+RequestCDDC::from_string(const std::string& str)
+{
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else if (!(json.has("cdd_serial")&&json.has("message_reference"))) {
+    return tl::make_unexpected(eError::JSON_ERROR);
+  } else {
+    RequestCDDC r;
+    r.cdd_serial=json["cdd_serial"].u();
+    r.message_reference= json["message_reference"].u();
+    return r;
+  }
+}
+
+tl::expected<RequestMKCs,eError>
+RequestMKCs::from_string(const std::string& str) {
+  std::vector<unsigned int> denominations;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  std::vector<unsigned int> mint_key_ids;
+  //  "type": "request mint key certificates"
+
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else {
+    return tl::make_unexpected(eError::NOT_IMPLEMENTED);
+  }
+}
+
+
+crow::json::wvalue ResponseMKCs::to_json() const{  
+  crow::json::wvalue r = Response::to_json();
+  TO_JSON_ARRAY(keys);
+  r["type"]= "response mint key certificates";
+  return r;
+}
+
+crow::json::wvalue Blind::to_json() const {
+  crow::json::wvalue r;
+  TO_JSON(blinded_payload_hash);
+  TO_JSON(mint_key_id);
+  TO_JSON(reference);
+  r["type"]= "blinded payload hash";
+  return r;
+} 
+
+crow::json::wvalue BlindSignature::to_json() const {
+  crow::json::wvalue r;
+  TO_JSON(blind_signature);
+  TO_JSON(reference);
+  r["type"]= "blind signature";
+  return r;
+  
+}
+
+tl::expected<RequestMint,eError>
+RequestMint::from_string(const std::string& str){
+  std::vector<Blind> blinds;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  //  "type": "request mint"
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else {
+    return tl::make_unexpected(eError::NOT_IMPLEMENTED);
+  }
+}
+
+crow::json::wvalue ResponseMint::to_json() const {
+  crow::json::wvalue r = Response::to_json();
+  TO_JSON_ARRAY(blind_signatures);
+  r["type"]= "response mint";
+  return r;
+}
+
+crow::json::wvalue Coin::Payload::to_json() const {
+  crow::json::wvalue r;
+  TO_JSON(cdd_location);
+  TO_JSON(denomination);
+  TO_JSON(issuer_id);
+  TO_JSON(mint_key_id);
+  TO_JSON(protocol_version);
+  TO_JSON(serial);
+
+  r["type"]= "payload";
+  return r;
+}
+
+crow::json::wvalue Coin::to_json() const
+{
+  crow::json::wvalue r;
+  TO_JSON_JSON(payload);
+  TO_JSON(signature);
+  r["type"]= "coin";
+  return r;
+}
+
+crow::json::wvalue CoinStack::to_json() const {
+  crow::json::wvalue r;
+  TO_JSON_ARRAY(coins);
+  TO_JSON(subject);
+  r["type"]= "coinstack";
+  return r;
+}  
+
+
+tl::expected<RequestRenew,eError>
+RequestRenew::from_string(const std::string& str) {
+  std::vector<Blind> blinds;
+  std::vector<Coin> coins;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request renew"
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else {
+    return tl::make_unexpected(eError::NOT_IMPLEMENTED);
+  }
+}
+
+crow::json::wvalue ResponseDelay::to_json() const {  
+  crow::json::wvalue r = Response::to_json();
+  r["type"]= "response delay";
+  return r;
+}
+
+tl::expected<RequestResume,eError>
+RequestResume::from_string(const std::string& str) {
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request resume"
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else {
+    return tl::make_unexpected(eError::NOT_IMPLEMENTED);
+  }
+}
+
+tl::expected<RequestRedeem,eError>
+RequestRedeem::from_string(const std::string& str) {
+  std::vector<Coin> coins;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request redeem"
+  auto json = crow::json::load(str);
+  if (!json) {
+    return tl::make_unexpected(eError::JSON_PARSE_ERROR);
+  } else {
+    return tl::make_unexpected(eError::NOT_IMPLEMENTED);
+  }
+}
+
+crow::json::wvalue ResponseReedem::to_json() const {
+  crow::json::wvalue r = Response::to_json();
+  r["type"]= "response redeem";
+  return r;
+}  
+
+
+/** this is for now our sample model */
 class DefaultModel : public Model {
 public:
   
   DefaultModel() {}
   const CDDC& getCDDC() override {return m_cddc; };
+  const CDDC& getCurrentCDDC() override {return m_cddc; };
   void mint() override {};
 
 private:

src/model.hpp

@@ -10,6 +10,7 @@
 
 #include "tl/expected.hpp"
 
+
 struct PublicKey {
   std::string modulus; //: "daaa63ddda38c189b8c49020c8276adbe0a695685a...",
   std::string public_exponent;//: 65537,
@@ -24,7 +25,6 @@ struct WeightedUrl {
   crow::json::wvalue to_json() const;
 };
 
-
 /** currency description document */
 struct CDD {
 
@@ -80,28 +80,154 @@ struct MintKeyCert {
   crow::json::wvalue to_json() const;  
 };
 
-struct RequestCDDC {
+enum class eError {
-  unsigned int cdd_serial;/// The version of the CDD. (Int)
+  JSON_PARSE_ERROR,
-  unsigned int message_reference; /// Client internal message reference.
+  JSON_ERROR,
-                                  /// (Integer)
+  NOT_IMPLEMENTED
-  static std::optional<RequestCDDC> from_json(const crow::json::rvalue & json); 
 };
 
-struct ResponseCDDC {
+struct Response {
-  CDDC cddc;
   unsigned int message_reference;
   unsigned int status_code;
   std::string status_description;
 
+  virtual crow::json::wvalue to_json() const;  
+};
+  
+struct RequestCDDSerial {
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  static tl::expected<RequestCDDSerial,eError> from_string(const std::string& str);
+};
+
+struct ResponseCDDSerial: Response {
+  unsigned int cdd_serial;
+
+  crow::json::wvalue to_json() const override;  
+};
+
+struct RequestCDDC {
+  unsigned int cdd_serial;/// The version of the CDD. (Int)
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  static tl::expected<RequestCDDC,eError> from_string(const std::string& str);
+};
+
+struct ResponseCDDC : Response {
+  CDDC cddc;
+
+  crow::json::wvalue to_json() const override;  
+};
+
+struct RequestMKCs {
+  std::vector<unsigned int> denominations;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  std::vector<unsigned int> mint_key_ids;
+  //  "type": "request mint key certificates"
+  static tl::expected<RequestMKCs,eError> from_string(const std::string& str);
+};
+
+struct ResponseMKCs: Response {
+  std::vector<MintKeyCert> keys;
+
+  crow::json::wvalue to_json() const override;  
+};
+
+struct Blind {
+  std::string blinded_payload_hash;
+  std::string mint_key_id;
+  std::string reference;
   crow::json::wvalue to_json() const;  
 };
 
+struct BlindSignature {
+  std::string blind_signature;
+  std::string reference;
+  crow::json::wvalue to_json() const;  
+};
+
+struct RequestMint {
+  std::vector<Blind> blinds;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  //  "type": "request mint"
+  static tl::expected<RequestMint,eError> from_string(const std::string& str);
+};
+
+struct ResponseMint : Response {
+  std::vector<BlindSignature> blind_signatures;
+
+  crow::json::wvalue to_json() const override;  
+};
+
+
+struct Coin {
+  struct Payload {
+    std::string cdd_location;
+    unsigned int denomination;
+    std::string issuer_id;
+    std::string mint_key_id;
+    std::string protocol_version;
+    std::string serial;
+    
+    crow::json::wvalue to_json() const;  
+};
+
+  Payload payload;
+  std::string signature;
+
+  crow::json::wvalue to_json() const;  
+};
+
+struct CoinStack {
+  std::vector<Coin> coins;
+  std::string subject;
+  //  "type": "coinstack"
+  crow::json::wvalue to_json() const;  
+};
+
+struct RequestRenew {
+  std::vector<Blind> blinds;
+  std::vector<Coin> coins;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request renew"
+  static tl::expected<RequestRenew,eError> from_string(const std::string& str);
+};
+
+struct ResponseDelay : Response {
+  crow::json::wvalue to_json() const override;  
+};
+
+struct RequestResume {
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request resume"
+  static tl::expected<RequestResume,eError> from_string(const std::string& str);
+};
+
+struct RequestRedeem {
+  std::vector<Coin> coins;
+  unsigned int message_reference; /// Client internal message reference.
+                                  /// (Integer)
+  unsigned int transaction_reference; 
+  //  "type": "request redeem"
+  static tl::expected<RequestRedeem,eError> from_string(const std::string& str);
+};
+
+struct ResponseReedem : Response {
+  crow::json::wvalue to_json() const override;  
+};
 
 class Model {
 public:
   virtual ~Model(){};
 
   virtual const CDDC& getCDDC() = 0;
+  virtual const CDDC& getCurrentCDDC() = 0;
   virtual void mint() = 0;
 
   static std::unique_ptr<Model> getModel(const std::string& backend_name);