From 905f9975d2868e6544d4759a90be85facbfd59b1 Mon Sep 17 00:00:00 2001
From: Jagadeesh Kotra <jagadeesh@stdin.top>
Date: Fri, 19 Mar 2021 16:54:00 +0530
Subject: [PATCH] example: importing vpn with libnm

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/789
---
 Makefile.examples                  | 10 ++++-
 examples/C/glib/meson.build        |  1 +
 examples/C/glib/vpn-import-libnm.c | 72 ++++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+), 1 deletion(-)
 create mode 100644 examples/C/glib/vpn-import-libnm.c

diff --git a/Makefile.examples b/Makefile.examples
index d427397830..437b1e0ed7 100644
--- a/Makefile.examples
+++ b/Makefile.examples
@@ -20,7 +20,9 @@ check_programs_norun += \
 	examples/C/glib/list-connections-gdbus \
 	examples/C/glib/list-connections-libnm \
 	examples/C/glib/monitor-nm-running-gdbus \
-	examples/C/glib/monitor-nm-state-gdbus
+	examples/C/glib/monitor-nm-state-gdbus \
+	examples/C/glib/vpn-import-libnm \
+	$(NULL)
 
 examples_C_glib_add_connection_gdbus_CPPFLAGS = $(examples_C_glib_cppflags_gdbus)
 examples_C_glib_add_connection_gdbus_LDADD = \
@@ -63,6 +65,12 @@ examples_C_glib_monitor_nm_state_gdbus_CPPFLAGS = $(examples_C_glib_cppflags_gdb
 examples_C_glib_monitor_nm_state_gdbus_LDADD = \
 	$(GLIB_LIBS)
 
+examples_C_glib_vpn_import_libnm_CPPFLAGS = $(examples_C_glib_cppflags_libnm)
+examples_C_glib_vpn_import_libnm_LDADD = \
+	src/libnm-client-impl/libnm.la \
+	$(GLIB_LIBS)
+$(examples_C_glib_vpn_import_libnm_OBJECTS): $(src_libnm_core_public_mkenums_h) $(src_libnm_client_public_mkenums_h)
+
 EXTRA_DIST += \
 	examples/C/glib/meson.build
 
diff --git a/examples/C/glib/meson.build b/examples/C/glib/meson.build
index 5bee13c1dc..8899a90fa4 100644
--- a/examples/C/glib/meson.build
+++ b/examples/C/glib/meson.build
@@ -9,6 +9,7 @@ examples = [
   ['list-connections-libnm',       []],
   ['monitor-nm-running-gdbus',     []],
   ['monitor-nm-state-gdbus',       []],
+  ['vpn-import-libnm',              []],
 ]
 
 foreach example: examples
diff --git a/examples/C/glib/vpn-import-libnm.c b/examples/C/glib/vpn-import-libnm.c
new file mode 100644
index 0000000000..ccdbe92310
--- /dev/null
+++ b/examples/C/glib/vpn-import-libnm.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * The example shows how to import VPN connection from a file.
+ * @author: Jagadeesh Kotra <jagadeesh@stdin.top>
+ *
+ * Compile with:
+ *   gcc -Wall vpn-import-libnm.c -o vpn-import-libnm `pkg-config --cflags --libs libnm`
+ */
+
+#include <glib.h>
+#include <NetworkManager.h>
+#include <stdlib.h>
+
+static void
+add_cb(NMClient *client, GAsyncResult *result, GMainLoop *loop)
+{
+    GError *err = NULL;
+    nm_client_add_connection_finish(client, result, &err);
+    if (err != NULL) {
+        g_print("Error: %s\n", err->message);
+    } else {
+        g_print("Connection Added.\n");
+    }
+
+    g_main_loop_quit(loop);
+}
+
+int
+main(int argc, char **argv)
+{
+    GMainLoop *        loop = g_main_loop_new(NULL, FALSE);
+    GSList *           plugins;
+    GSList *           iter;
+    NMVpnEditorPlugin *editor;
+    NMClient *         client;
+    GError *           err  = NULL;
+    NMConnection *     conn = NULL;
+
+    if (argc < 2) {
+        g_print("program takes exactly one(1) argument.\n");
+        exit(1);
+    }
+
+    plugins = nm_vpn_plugin_info_list_load();
+    g_assert(plugins != NULL);
+
+    for (iter = plugins; iter; iter = iter->next) {
+        const char *plugin_name = nm_vpn_plugin_info_get_name(iter->data);
+        g_print("Trying Plugin: %s\n", plugin_name);
+
+        //try to load plugin
+        editor = nm_vpn_plugin_info_load_editor_plugin(iter->data, NULL);
+
+        conn = nm_vpn_editor_plugin_import(editor, argv[1], &err);
+        if (err != NULL) {
+            g_print("Error: %s\n", err->message);
+            g_error_free(err);
+            err = NULL;
+        } else {
+            g_print("%s imported with %s plugin.\n", argv[1], plugin_name);
+            break;
+        }
+    }
+
+    g_slist_free_full(plugins, g_object_unref);
+    g_assert(conn != NULL);
+
+    client = nm_client_new(NULL, NULL);
+
+    nm_client_add_connection_async(client, conn, TRUE, NULL, (GAsyncReadyCallback) add_cb, loop);
+    g_main_loop_run(loop);
+}