Allow pure dynamic bindings

[src/app-framework-binder.git] / src / afb-api-so-vdyn.c

diff --git a/src/afb-api-so-vdyn.c b/src/afb-api-so-vdyn.c
new file mode 100644 (file)
index 0000000..c2ac2cf
--- /dev/null
+++ b/src/afb-api-so-vdyn.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include <dlfcn.h>
+
+#include "afb-api-so-vdyn.h"
+#include "afb-export.h"
+#include "verbose.h"
+
+/*
+ * names of symbols
+ */
+static const char afb_api_so_vdyn_entry[] = "afbBindingVdyn";
+
+/*
+ * Description of a binding
+ */
+static int vdyn_preinit(void *closure, struct afb_dynapi *dynapi)
+{
+       int (*entry)(struct afb_dynapi*) = closure;
+       return entry(dynapi);
+}
+
+int afb_api_so_vdyn_add(const char *path, void *handle, struct afb_apiset *apiset)
+{
+       int rc;
+       int (*entry)(void*, struct afb_dynapi*);
+       struct afb_export *export;
+
+       entry = dlsym(handle, afb_api_so_vdyn_entry);
+       if (!entry)
+               return 0;
+
+       INFO("binding [%s] looks like an AFB binding Vdyn", path);
+
+       export = afb_export_create_vdyn(apiset, path, NULL);
+       if (!export) {
+               ERROR("can't create export for %s", path);
+               return -1;
+       }
+
+       INFO("binding [%s] calling dynamic initialisation %s", path, afb_api_so_vdyn_entry);
+       rc = afb_export_preinit_vdyn(export, vdyn_preinit, entry);
+       afb_export_destroy(export);
+       return rc < 0 ? rc : 1;
+}
+