Tetsing void pointer from C to Go.

auth-plugin.c

@@ -2,11 +2,10 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
-#include <curl/curl.h>
 
 #include <mosquitto.h>
 #include <mosquitto_plugin.h>
-#include "auth-plugin.h"
+#include "go-auth.h"
 
 int mosquitto_auth_plugin_version(void) {
   return MOSQ_AUTH_PLUGIN_VERSION;
@@ -16,9 +15,10 @@ int mosquitto_auth_plugin_init(void **user_data, struct mosquitto_auth_opt *auth
   /*
     Pass auth_opts hash to Go in order to initialize them there.
   */
-  GoSlice auth_opts = {mosquitto_auth_opt, auth_opt_count, auth_opt_count};
+  //GoSlice auth_opts = {mosquitto_auth_opt, auth_opt_count, auth_opt_count};
   GoInt32 opts_count = auth_opt_count;
-  AuthPluginInit(auth_opts, opts_count);
+  GoMap opts = auth_opts;
+  AuthPluginInit(opts, opts_count);
   return MOSQ_ERR_SUCCESS;
 }
 

go-auth-plug.h

@@ -0,0 +1,66 @@
+/* Created by "go tool cgo" - DO NOT EDIT. */
+
+/* package github.com/iegomez/mosquitto-go-auth-plugin */
+
+/* Start of preamble from import "C" comments.  */
+
+
+
+
+/* End of preamble from import "C" comments.  */
+
+
+/* Start of boilerplate cgo prologue.  */
+#line 1 "cgo-gcc-export-header-prolog"
+
+#ifndef GO_CGO_PROLOGUE_H
+#define GO_CGO_PROLOGUE_H
+
+typedef signed char GoInt8;
+typedef unsigned char GoUint8;
+typedef short GoInt16;
+typedef unsigned short GoUint16;
+typedef int GoInt32;
+typedef unsigned int GoUint32;
+typedef long long GoInt64;
+typedef unsigned long long GoUint64;
+typedef GoInt64 GoInt;
+typedef GoUint64 GoUint;
+typedef __SIZE_TYPE__ GoUintptr;
+typedef float GoFloat32;
+typedef double GoFloat64;
+typedef float _Complex GoComplex64;
+typedef double _Complex GoComplex128;
+
+/*
+  static assertion to make sure the file is being used on architecture
+  at least with matching size of GoInt.
+*/
+typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1];
+
+typedef struct { const char *p; GoInt n; } GoString;
+typedef void *GoMap;
+typedef void *GoChan;
+typedef struct { void *t; void *v; } GoInterface;
+typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
+
+#endif
+
+/* End of boilerplate cgo prologue.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+extern void AuthPluginInit(GoMap p0, GoInt p1);
+
+extern GoUint8 AuthUnpwdCheck(GoString p0, GoString p1);
+
+extern GoUint8 AuthAclCheck(GoString p0, GoString p1, GoString p2, GoInt p3);
+
+extern GoUint8 AuthPskKeyGet();
+
+#ifdef __cplusplus
+}
+#endif

go-auth.go

@@ -2,13 +2,16 @@ package main
 
 import "C"
 
+import "fmt"
+import "unsafe"
+
 var jsonJwtOpts []string
 var pgOpts []string
 var redisOpts []string
 
 //export AuthPluginInit
-func AuthPluginInit(authOpts []string, authOptsNum int) {
-
+func AuthPluginInit(authOpts map[string]string, authOptsNum int) {
+	fmt.Printf("authOpts: %v\n", unsafe.Pointer(&authOpts))
 }
 
 //export AuthUnpwdCheck

go-auth.h

@@ -53,7 +53,7 @@ extern "C" {
 #endif
 
 
-extern void AuthPluginInit(GoSlice p0, GoInt p1);
+extern void AuthPluginInit(GoMap p0, GoInt p1);
 
 extern GoUint8 AuthUnpwdCheck(GoString p0, GoString p1);