update go api

go/gmssl/engine.go

@@ -7,7 +7,10 @@ package gmssl
 import "C"
 
 import (
+	"runtime"
 	"errors"
+	"unsafe"
+	"fmt"
 )
 
 func GetEngineNames() []string {
@@ -19,19 +22,63 @@ type Engine struct {
 }
 
 func OpenEngine(name string, args map[string]string) (*Engine, error) {
-	return nil, errors.New("Not implemented")
+	cname := C.CString(name)
+	defer C.free(unsafe.Pointer(cname))
+
+	engine := C.ENGINE_by_id(cname)
+	if engine == nil {
+		return nil, fmt.Errorf("shit")
+	}
+
+	ret := &Engine{engine}
+	runtime.SetFinalizer(ret, func(ret *Engine) {
+		C.ENGINE_free(ret.engine)
+	})
+	return ret, nil
 }
 
-func (eng *Engine) ExecuteCommand(cmd_name string, arg string, optinal bool) (string, error) {
-	return "", errors.New("Not implemented")
+func (eng *Engine) ExecuteCommand(cmd_name string, arg string, optinal bool) error {
+	ccmd := C.CString(cmd_name)
+	defer C.free(unsafe.Pointer(ccmd))
+	carg := C.CString(arg)
+	defer C.free(unsafe.Pointer(carg))
+
+	if 1 != C.ENGINE_ctrl_cmd_string(eng.engine, ccmd, carg, 0) {
+		return errors.New("Not implemented")
+	}
+	return nil
 }
 
 func (eng *Engine) LoadPrivateKey(key_id string, args map[string]string) (*PrivateKey, error) {
-	return nil, errors.New("Not implemented")
+	cid := C.CString(key_id)
+	defer C.free(unsafe.Pointer(cid))
+
+	pkey := C.ENGINE_load_private_key(eng.engine, cid, C.NULL, C.NULL)
+	if pkey == nil {
+		return nil, fmt.Errorf("shit")
+	}
+
+	ret := &PrivateKey{pkey}
+	runtime.SetFinalizer(ret, func(ret *PrivateKey) {
+		C.EVP_PKEY_free(ret.pkey)
+	})
+	return ret, nil
 }
 
 func (eng *Engine) LoadPublicKey(key_id string, args map[string]string) (*PublicKey, error) {
-	return nil, errors.New("Not implemented")
+	cid := C.CString(key_id)
+	defer C.free(unsafe.Pointer(cid))
+
+	pkey := C.ENGINE_load_public_key(eng.engine, cid, C.NULL, C.NULL)
+	if pkey == nil {
+		return nil, fmt.Errorf("shit")
+	}
+
+	ret := &PublicKey{pkey}
+	runtime.SetFinalizer(ret, func(ret *PublicKey) {
+		C.EVP_PKEY_free(ret.pkey)
+	})
+	return ret, nil
 }
 
 func (eng *Engine) LoadCertificate(ca_dn []string, args map[string]string) (string, error) {