Fix a few issues with the C generator (part 4) (#20289)

* [C] Deal with binary api parameters

With this change, the bodyParameters array can also be binary, so pass
its length around instead of relying on strlen().

* [C] Fix a few remaining enum issues

* [C] Install headers and include any_type.h header

* [C] Don't require C++ to compile C code

* [C] Test binary bodies and path enums in schemas

* Update samples

---------

Co-authored-by: Sam Bingner <[email protected]>

Author: eafer

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CLibcurlClientCodegen.java

@@ -347,6 +347,7 @@ public void processOpts() {
         // root folder
         supportingFiles.add(new SupportingFile("CMakeLists.txt.mustache", "", "CMakeLists.txt"));
         supportingFiles.add(new SupportingFile("Packing.cmake.mustache", "", "Packing.cmake"));
+        supportingFiles.add(new SupportingFile("cmake-config.mustache", "", "Config.cmake.in"));
         supportingFiles.add(new SupportingFile("libcurl.licence.mustache", "", "libcurl.licence"));
         supportingFiles.add(new SupportingFile("uncrustify-rules.cfg.mustache", "", "uncrustify-rules.cfg"));
         supportingFiles.add(new SupportingFile("README.md.mustache", "", "README.md"));

modules/openapi-generator/src/main/resources/C-libcurl/CMakeLists.txt.mustache

@@ -1,10 +1,9 @@
 cmake_minimum_required (VERSION 2.6...3.10.2)
-project (CGenerator)
+project (CGenerator C)
 
 cmake_policy(SET CMP0063 NEW)
 
 set(CMAKE_C_VISIBILITY_PRESET default)
-set(CMAKE_CXX_VISIBILITY_PRESET default)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN OFF)
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 

modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache

@@ -107,6 +107,7 @@ end:
     list_t *localVarHeaderType = {{#hasProduces}}list_createList();{{/hasProduces}}{{^hasProduces}}NULL;{{/hasProduces}}
     list_t *localVarContentType = {{#hasConsumes}}list_createList();{{/hasConsumes}}{{^hasConsumes}}NULL;{{/hasConsumes}}
     char      *localVarBodyParameters = NULL;
+    size_t     localVarBodyLength = 0;
 
     // clear the error code from the previous api call
     apiClient->response_code = 0;
@@ -121,12 +122,16 @@ end:
     if(!{{paramName}})
         goto end;
     {{/isString}}
+    {{#isBinary}}
+    if(!{{paramName}})
+        goto end;
+    {{/isBinary}}
     {{/pathParams}}
 
     {{#pathParams}}
 
     // Path Params
-    long sizeOfPathParams_{{{paramName}}} = {{#pathParams}}{{#isLong}}sizeof({{paramName}})+3{{/isLong}}{{#isString}}strlen({{paramName}})+3{{/isString}}{{^-last}} + {{/-last}}{{/pathParams}} + strlen("{ {{baseName}} }");
+    long sizeOfPathParams_{{{paramName}}} = {{#pathParams}}{{#isLong}}sizeof({{paramName}})+3{{/isLong}}{{#isString}}strlen({{^isEnum}}{{paramName}}{{/isEnum}}{{#isEnum}}{{{operationId}}}_{{enumName}}_ToString({{paramName}}){{/isEnum}})+3{{/isString}}{{^-last}} + {{/-last}}{{/pathParams}} + strlen("{ {{baseName}} }");
     {{#isNumeric}}
     if({{paramName}} == 0){
         goto end;
@@ -180,13 +185,13 @@ end:
 
     {{/isLong}}
     {{#isString}}
-    if({{paramName}} == NULL) {
+    if({{paramName}} == {{#isEnum}}0{{/isEnum}}{{^isEnum}}NULL{{/isEnum}}) {
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
     sprintf(localVarToReplace_{{paramName}}, "{%s}", "{{baseName}}");
 
-    localVarPath = strReplace(localVarPath, localVarToReplace_{{paramName}}, {{paramName}});
+    localVarPath = strReplace(localVarPath, localVarToReplace_{{paramName}}, {{^isEnum}}{{paramName}}{{/isEnum}}{{#isEnum}}{{{operationId}}}_{{enumName}}_ToString({{paramName}}){{/isEnum}});
     {{/isString}}
     {{#isUuid}}
     if({{paramName}} == NULL) {
@@ -331,20 +336,30 @@ end:
         }
         cJSON_AddItemToArray(localVarSingleItemJSON_{{paramName}}, localVar_{{paramName}});
         localVarBodyParameters = {{{cJSONPrint}}}(localVarItemJSON_{{paramName}});
+        localVarBodyLength = strlen(localVarBodyParameters);
     }
     {{/isArray}}
     {{^isArray}}
     {{#isString}}
     localVarBodyParameters = strdup({{paramName}});
+    localVarBodyLength = strlen(localVarBodyParameters);
     {{/isString}}
     {{^isString}}
+    {{#isBinary}}
+    localVarBodyParameters = malloc({{paramName}}->len);
+    memcpy(localVarBodyParameters, {{paramName}}->data, {{paramName}}->len);
+    localVarBodyLength = {{paramName}}->len;
+    {{/isBinary}}
+    {{^isBinary}}
     cJSON *localVarSingleItemJSON_{{paramName}} = NULL;
     if ({{paramName}} != NULL)
     {
-        //string
+        //not string, not binary
         localVarSingleItemJSON_{{paramName}} = {{dataType}}_convertToJSON({{paramName}});
         localVarBodyParameters = {{{cJSONPrint}}}(localVarSingleItemJSON_{{paramName}});
+        localVarBodyLength = strlen(localVarBodyParameters);
     }
+    {{/isBinary}}
     {{/isString}}
     {{/isArray}}
     {{/bodyParam}}
@@ -362,6 +377,7 @@ end:
                     localVarHeaderType,
                     localVarContentType,
                     localVarBodyParameters,
+                    localVarBodyLength,
                     "{{{httpMethod}}}");
 
     {{#responses}}
@@ -503,10 +519,12 @@ end:
     {{/isArray}}
     {{^isArray}}
     {{^isString}}
+    {{^isBinary}}
     if (localVarSingleItemJSON_{{paramName}}) {
         cJSON_Delete(localVarSingleItemJSON_{{paramName}});
         localVarSingleItemJSON_{{paramName}} = NULL;
     }
+    {{/isBinary}}
     {{/isString}}
     free(localVarBodyParameters);
     {{/isArray}}
@@ -644,10 +662,12 @@ end:
     free(localVarBodyParameters);
     {{/isArray}}
     {{^isArray}}
+    {{^isBinary}}
     if (localVarSingleItemJSON_{{paramName}}) {
         cJSON_Delete(localVarSingleItemJSON_{{paramName}});
         localVarSingleItemJSON_{{paramName}} = NULL;
     }
+    {{/isBinary}}
     free(localVarBodyParameters);
     {{/isArray}}
     {{/bodyParams}}

modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache

@@ -244,10 +244,10 @@ char *assembleHeaderField(char *key, char *value) {
     return header;
 }
 
-void postData(CURL *handle, const char *bodyParameters) {
+void postData(CURL *handle, const char *bodyParameters, size_t bodyParametersLength) {
     curl_easy_setopt(handle, CURLOPT_POSTFIELDS, bodyParameters);
     curl_easy_setopt(handle, CURLOPT_POSTFIELDSIZE_LARGE,
-                     (curl_off_t)strlen(bodyParameters));
+                     (curl_off_t)bodyParametersLength);
 }
 
 int lengthOfKeyPair(keyValuePair_t *keyPair) {
@@ -270,7 +270,8 @@ void apiClient_invoke(apiClient_t    *apiClient,
                       list_t        *headerType,
                       list_t        *contentType,
                       const char    *bodyParameters,
-                      const char    *requestType) {
+                      size_t       bodyParametersLength,
+                      const char   *requestType) {
     CURL *handle = curl_easy_init();
     CURLcode res;
 
@@ -550,7 +551,7 @@ void apiClient_invoke(apiClient_t    *apiClient,
         {{/hasAuthMethods}}
 
         if(bodyParameters != NULL) {
-            postData(handle, bodyParameters);
+            postData(handle, bodyParameters, bodyParametersLength);
         }
 
         res = curl_easy_perform(handle);

modules/openapi-generator/src/main/resources/C-libcurl/apiClient.h.mustache

@@ -62,7 +62,7 @@ apiClient_t* apiClient_create_with_base_path(const char *basePath
 
 void apiClient_free(apiClient_t *apiClient);
 
-void apiClient_invoke(apiClient_t *apiClient,const char* operationParameter, list_t *queryParameters, list_t *headerParameters, list_t *formParameters,list_t *headerType,list_t *contentType, const char *bodyParameters, const char *requestType);
+void apiClient_invoke(apiClient_t *apiClient,const char* operationParameter, list_t *queryParameters, list_t *headerParameters, list_t *formParameters,list_t *headerType,list_t *contentType, const char *bodyParameters, size_t bodyParametersLength, const char *requestType);
 
 sslConfig_t *sslConfig_create(const char *clientCertFile, const char *clientKeyFile, const char *CACertFile, int insecureSkipTlsVerify);
 

modules/openapi-generator/src/main/resources/C-libcurl/cmake-config.mustache

@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+
+include(${CMAKE_CURRENT_LIST_DIR}/@[email protected])
+
+check_required_components("@PROJECT_NAME@")

modules/openapi-generator/src/test/resources/2_0/c/petstore.yaml

@@ -280,6 +280,7 @@ paths:
           required: true
           schema:
             type: string
+            format: binary
       responses:
         '200':
           description: successful operation
@@ -348,6 +349,52 @@ paths:
         - petstore_auth:
             - 'write:pets'
             - 'read:pets'
+  /store/feedback:
+    post:
+      tags:
+        - store
+      summary: Send us a feedback message
+      description: ''
+      operationId: sendFeedback
+      parameters:
+        - in: body
+          name: feedback
+          description: The feedback message to send
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: successful operation
+          schema:
+            type: string
+            description: Thank you message
+  '/store/rating/{rating}':
+    post:
+      tags:
+        - store
+      summary: How would you rate our service?
+      description: ''
+      operationId: sendRating
+      parameters:
+        - in: path
+          name: rating
+          description: The rating to submit
+          required: true
+          type: string
+          enum:
+            - Excellent
+            - Great
+            - Good
+            - Regular
+            - Bad
+            - Awful
+      responses:
+        '200':
+          description: successful operation
+          schema:
+            type: string
+            description: Thank you message
   /store/daysWithoutIncident:
     get:
       tags:

samples/client/others/c/bearerAuth/.openapi-generator/FILES

@@ -1,4 +1,5 @@
 CMakeLists.txt
+Config.cmake.in
 Packing.cmake
 README.md
 api/DefaultAPI.c

samples/client/others/c/bearerAuth/CMakeLists.txt

@@ -1,10 +1,9 @@
 cmake_minimum_required (VERSION 2.6...3.10.2)
-project (CGenerator)
+project (CGenerator C)
 
 cmake_policy(SET CMP0063 NEW)
 
 set(CMAKE_C_VISIBILITY_PRESET default)
-set(CMAKE_CXX_VISIBILITY_PRESET default)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN OFF)
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 

samples/client/others/c/bearerAuth/Config.cmake.in

@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+
+include(${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake)
+
+check_required_components("@PROJECT_NAME@")