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[network-manager-openvpn/th/vpn-editor-split-bgo765732: 13/13] properties: split libnm-vpn-plugin-openvpn.so in two libraries

commit dac2c82ada4ed82c39e44282f58fdc596bf93b81
Author: Thomas Haller <thaller redhat com>
Date:   Thu Apr 28 21:19:44 2016 +0200

    properties: split libnm-vpn-plugin-openvpn.so in two libraries
    
    Split "libnm-vpn-plugin-openvpn-editor.so" out of "libnm-vpn-plugin-openvpn.so".
    The new library contains the GTK dependent code, making the remaining
    core plugin independent of the GUI.
    
    For the new libnm-based plugin, the get_editor() function will now
    dlopen a second plugin and load the NMVpnEditor instance from there.

 Makefile.am                                    |    4 +-
 configure.ac                                   |    8 ++-
 po/POTFILES.in                                 |    1 +
 properties/Makefile.am                         |   53 ++++++++++---
 properties/auth-helpers.c                      |    1 -
 properties/libnm-vpn-plugin-openvpn-editor.ver |    6 ++
 properties/nm-openvpn-editor-plugin.c          |   39 +++++++++-
 properties/nm-openvpn-editor-plugin.h          |    8 ++
 properties/nm-openvpn-editor.c                 |   18 ++++-
 properties/nm-vpn-plugin-utils.c               |   98 ++++++++++++++++++++++++
 properties/nm-vpn-plugin-utils.h               |   40 ++++++++++
 11 files changed, 256 insertions(+), 20 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 558cfe9..b6f9cab 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,7 +19,7 @@ install-data-hook:
        mkdir -p $(DESTDIR)$(sysconfdir)/NetworkManager/VPN
        sed -e "1s|^|# This file is obsoleted by a file in $(NM_VPN_SERVICE_DIR)\n\n|" \
            -e 's|[ ]LIBEXECDIR[@]|$(libexecdir)|g' \
-           -e 's|[ ]PLUGINDIR[@]|$(libdir)/NetworkManager|g' \
+           -e 's|[ ]PLUGINDIR[@]|@NM_PLUGIN_DIR@|g' \
            <$(srcdir)/nm-openvpn-service.name.in \
            >$(DESTDIR)$(sysconfdir)/NetworkManager/VPN/nm-openvpn-service.name
 
@@ -34,7 +34,7 @@ appdata_in_files = appdata/network-manager-openvpn.metainfo.xml.in
 
 nm-openvpn-service.name: $(srcdir)/nm-openvpn-service.name.in
        sed -e 's|[ ]LIBEXECDIR[@]|$(libexecdir)|g' \
-           -e 's|[ ]PLUGINDIR[@]/|@NM_PLUGIN_DIR@|g' \
+           -e 's|[ ]PLUGINDIR[@]/|@NM_PLUGIN_DIR_NAME_FILE@|g' \
            $^ >$@
 
 DISTCHECK_CONFIGURE_FLAGS = \
diff --git a/configure.ac b/configure.ac
index 825c8b4..397866b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -95,8 +95,14 @@ AC_SUBST(NM_VPN_SERVICE_DIR)
 
 NM_COMPILER_WARNINGS
 
-test x"$enable_absolute_paths" = x"yes" && NM_PLUGIN_DIR='$(libdir)/NetworkManager/'
+NM_PLUGIN_DIR="$libdir/NetworkManager"
 AC_SUBST(NM_PLUGIN_DIR)
+if test x"$enable_absolute_paths" == x"yes"; then
+       NM_PLUGIN_DIR_NAME_FILE="$NM_PLUGIN_DIR/"
+else
+       NM_PLUGIN_DIR_NAME_FILE=""
+fi
+AC_SUBST(NM_PLUGIN_DIR_NAME_FILE)
 
 dnl
 dnl Tests
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 5dc1db0..7aa5ca3 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -6,6 +6,7 @@ properties/auth-helpers.c
 properties/import-export.c
 properties/nm-openvpn-editor-plugin.c
 properties/nm-openvpn-editor.c
+properties/nm-vpn-plugin-utils.c
 shared/nm-shared-utils.c
 src/nm-openvpn-service.c
 src/nm-openvpn-service-openvpn-helper.c
diff --git a/properties/Makefile.am b/properties/Makefile.am
index 2270024..887123b 100644
--- a/properties/Makefile.am
+++ b/properties/Makefile.am
@@ -1,7 +1,9 @@
 SUBDIRS = . tests
 
 plugindir = $(libdir)/NetworkManager
-plugin_LTLIBRARIES = libnm-vpn-plugin-openvpn.la
+plugin_LTLIBRARIES = \
+    libnm-vpn-plugin-openvpn.la \
+    libnm-vpn-plugin-openvpn-editor.la
 if WITH_LIBNM_GLIB
 plugin_LTLIBRARIES += libnm-openvpn-properties.la
 endif
@@ -9,21 +11,21 @@ endif
 plugin_sources = \
         nm-openvpn-editor-plugin.c \
         nm-openvpn-editor-plugin.h \
+        import-export.c \
+        import-export.h
+
+editor_sources = \
         nm-openvpn-editor.c \
         nm-openvpn-editor.h \
         auth-helpers.c \
-        auth-helpers.h \
-        import-export.c \
-        import-export.h
+        auth-helpers.h
 
 uidir = $(datadir)/gnome-vpn-properties/openvpn
 ui_DATA = nm-openvpn-dialog.ui
 
 common_CFLAGS =                                         \
         $(GLIB_CFLAGS)                                  \
-        $(GTK_CFLAGS)                                   \
         -I$(top_srcdir)/shared                          \
-        -DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_LIB \
         -DICONDIR=\""$(datadir)/pixmaps"\"              \
         -DUIDIR=\""$(uidir)"\"                          \
         -DLOCALEDIR=\"$(datadir)/locale\"
@@ -31,17 +33,18 @@ common_CFLAGS =                                         \
 ###############################################################################
 
 libnm_vpn_plugin_openvpn_la_SOURCES = \
-        $(plugin_sources)
+        $(plugin_sources) \
+        nm-vpn-plugin-utils.c \
+        nm-vpn-plugin-utils.h
 
 libnm_vpn_plugin_openvpn_la_CFLAGS =                    \
         $(common_CFLAGS)                                \
-        $(LIBNM_CFLAGS)                                 \
-        $(LIBNMA_CFLAGS)
+        -DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_LIB_BASE \
+        -DNM_PLUGIN_DIR=\"$(NM_PLUGIN_DIR)\" \
+        $(LIBNM_CFLAGS)
 
 libnm_vpn_plugin_openvpn_la_LIBADD =                    \
-        $(GTK_LIBS)                                     \
         $(LIBNM_LIBS)                                   \
-        $(LIBNMA_LIBS)                                  \
         $(top_builddir)/shared/libnm-vpn-plugin-openvpn-shared.la
 
 libnm_vpn_plugin_openvpn_la_LDFLAGS = \
@@ -50,12 +53,37 @@ libnm_vpn_plugin_openvpn_la_LDFLAGS = \
 
 ###############################################################################
 
+libnm_vpn_plugin_openvpn_editor_la_SOURCES = \
+        $(editor_sources)
+
+libnm_vpn_plugin_openvpn_editor_la_CFLAGS = \
+        $(common_CFLAGS) \
+        $(GTK_CFLAGS) \
+        -DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_LIB_EDITOR \
+        $(LIBNM_CFLAGS) \
+        $(LIBNMA_CFLAGS)
+
+libnm_vpn_plugin_openvpn_editor_la_LIBADD = \
+        $(GTK_LIBS) \
+        $(LIBNM_LIBS) \
+        $(LIBNMA_LIBS) \
+        $(top_builddir)/shared/libnm-vpn-plugin-openvpn-shared.la
+
+libnm_vpn_plugin_openvpn_editor_la_LDFLAGS = \
+        -avoid-version \
+        -Wl,--version-script=$(srcdir)/libnm-vpn-plugin-openvpn-editor.ver
+
+###############################################################################
+
 libnm_openvpn_properties_la_SOURCES = \
-        $(plugin_sources)
+        $(plugin_sources) \
+        $(editor_sources)
 
 libnm_openvpn_properties_la_CFLAGS =                \
         -DNM_OPENVPN_OLD \
         $(common_CFLAGS)                                \
+        $(GTK_CFLAGS) \
+        -DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_LIB \
         $(LIBNM_GLIB_CFLAGS)                            \
         $(LIBNM_GTK_CFLAGS)
 
@@ -95,6 +123,7 @@ CLEANFILES = *.bak *~
 
 EXTRA_DIST = \
         libnm-vpn-plugin-openvpn.ver \
+        libnm-vpn-plugin-openvpn-editor.ver \
         libnm-openvpn-properties.ver \
         $(ui_DATA)
 
diff --git a/properties/auth-helpers.c b/properties/auth-helpers.c
index c56fc0d..746709b 100644
--- a/properties/auth-helpers.c
+++ b/properties/auth-helpers.c
@@ -33,7 +33,6 @@
 #include <unistd.h>
 #include <errno.h>
 
-#include "nm-openvpn-editor.h"
 #include "utils.h"
 
 #define BLOCK_HANDLER_ID "block-handler-id"
diff --git a/properties/libnm-vpn-plugin-openvpn-editor.ver b/properties/libnm-vpn-plugin-openvpn-editor.ver
new file mode 100644
index 0000000..542d577
--- /dev/null
+++ b/properties/libnm-vpn-plugin-openvpn-editor.ver
@@ -0,0 +1,6 @@
+{
+global:
+       nm_vpn_editor_factory_openvpn;
+local:
+       *;
+};
diff --git a/properties/nm-openvpn-editor-plugin.c b/properties/nm-openvpn-editor-plugin.c
index 50c7fb2..90d1d72 100644
--- a/properties/nm-openvpn-editor-plugin.c
+++ b/properties/nm-openvpn-editor-plugin.c
@@ -33,8 +33,12 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "auth-helpers.h"
+#ifdef NM_OPENVPN_OLD
 #include "nm-openvpn-editor.h"
+#else
+#include "nm-vpn-plugin-utils.h"
+#endif
+
 #include "import-export.h"
 
 #define OPENVPN_PLUGIN_NAME    _("OpenVPN")
@@ -122,10 +126,40 @@ get_capabilities (NMVpnEditorPlugin *iface)
                NM_VPN_EDITOR_PLUGIN_CAPABILITY_IPV6);
 }
 
+#ifndef NM_OPENVPN_OLD
+static NMVpnEditor *
+_call_editor_factory (gpointer factory,
+                      NMVpnEditorPlugin *editor_plugin,
+                      NMConnection *connection,
+                      gpointer user_data,
+                      GError **error)
+{
+       return ((NMVpnEditorFactory) factory) (editor_plugin,
+                                              connection,
+                                              error);
+}
+#endif
+
 static NMVpnEditor *
 get_editor (NMVpnEditorPlugin *iface, NMConnection *connection, GError **error)
 {
-       return openvpn_editor_new (connection, error);
+       g_return_val_if_fail (OPENVPN_IS_EDITOR_PLUGIN (iface), NULL);
+       g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);
+       g_return_val_if_fail (!error || !*error, NULL);
+
+       {
+#ifdef NM_OPENVPN_OLD
+               return openvpn_editor_new (connection, error);
+#else
+               return nm_vpn_plugin_utils_load_editor (NM_PLUGIN_DIR"/libnm-vpn-plugin-openvpn-editor.so",
+                                                       "nm_vpn_editor_factory_openvpn",
+                                                       _call_editor_factory,
+                                                       iface,
+                                                       connection,
+                                                       NULL,
+                                                       error);
+#endif
+       }
 }
 
 /*****************************************************************************/
@@ -158,7 +192,6 @@ openvpn_editor_plugin_init (OpenvpnEditorPlugin *plugin)
 static void
 openvpn_editor_plugin_interface_init (NMVpnEditorPluginInterface *iface_class)
 {
-       /* interface implementation */
        iface_class->get_editor = get_editor;
        iface_class->get_capabilities = get_capabilities;
        iface_class->import_from_file = import;
diff --git a/properties/nm-openvpn-editor-plugin.h b/properties/nm-openvpn-editor-plugin.h
index 2ccdd65..df7808f 100644
--- a/properties/nm-openvpn-editor-plugin.h
+++ b/properties/nm-openvpn-editor-plugin.h
@@ -43,6 +43,14 @@ struct _OpenvpnEditorPluginClass {
 
 GType openvpn_editor_plugin_get_type (void);
 
+typedef NMVpnEditor *(*NMVpnEditorFactory) (NMVpnEditorPlugin *editor_plugin,
+                                            NMConnection *connection,
+                                            GError **error);
+
+NMVpnEditor *
+nm_vpn_editor_factory_openvpn (NMVpnEditorPlugin *editor_plugin,
+                               NMConnection *connection,
+                               GError **error);
 
 #endif /* __NM_OPENVPN_EDITOR_PLUGIN_H__ */
 
diff --git a/properties/nm-openvpn-editor.c b/properties/nm-openvpn-editor.c
index e904d4c..15bcf55 100644
--- a/properties/nm-openvpn-editor.c
+++ b/properties/nm-openvpn-editor.c
@@ -37,7 +37,6 @@
 #include <gtk/gtk.h>
 
 #include "auth-helpers.h"
-#include "import-export.h"
 
 /*****************************************************************************/
 
@@ -588,3 +587,20 @@ openvpn_editor_plugin_widget_class_init (OpenvpnEditorClass *req_class)
        object_class->dispose = dispose;
 }
 
+/*****************************************************************************/
+
+#ifndef NM_OPENVPN_OLD
+
+#include "nm-openvpn-editor-plugin.h"
+
+G_MODULE_EXPORT NMVpnEditor *
+nm_vpn_editor_factory_openvpn (NMVpnEditorPlugin *editor_plugin,
+                               NMConnection *connection,
+                               GError **error)
+{
+       g_return_val_if_fail (!error || !*error, NULL);
+
+       return openvpn_editor_new (connection, error);
+}
+#endif
+
diff --git a/properties/nm-vpn-plugin-utils.c b/properties/nm-vpn-plugin-utils.c
new file mode 100644
index 0000000..1c2078b
--- /dev/null
+++ b/properties/nm-vpn-plugin-utils.c
@@ -0,0 +1,98 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2016 Red Hat, Inc.
+ */
+
+#include "nm-default.h"
+
+#include "nm-vpn-plugin-utils.h"
+
+/*****************************************************************************/
+
+NMVpnEditor *
+nm_vpn_plugin_utils_load_editor (const char *module_name,
+                                 const char *factory_name,
+                                 NMVpnPluginUtilsEditorFactory editor_factory,
+                                 NMVpnEditorPlugin *editor_plugin,
+                                 NMConnection *connection,
+                                 gpointer user_data,
+                                 GError **error)
+
+{
+       NMVpnEditor *editor;
+       gpointer factory;
+       GModule *module;
+
+       g_return_val_if_fail (module_name && g_path_is_absolute (module_name), NULL);
+       g_return_val_if_fail (factory_name && factory_name[0], NULL);
+       g_return_val_if_fail (editor_factory, NULL);
+       g_return_val_if_fail (NM_IS_VPN_EDITOR_PLUGIN (editor_plugin), NULL);
+       g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);
+       g_return_val_if_fail (error && !*error, NULL);
+
+       module = g_module_open (module_name, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
+       if (!module) {
+               if (!g_file_test (module_name, G_FILE_TEST_EXISTS)) {
+                       g_set_error (error,
+                                    G_FILE_ERROR,
+                                    G_FILE_ERROR_NOENT,
+                                    _("missing plugin file \"%s\""), module_name);
+                       return NULL;
+               }
+               g_set_error (error,
+                            NM_CONNECTION_ERROR,
+                            NM_CONNECTION_ERROR_FAILED,
+                            _("cannot load editor plugin %s"), module_name);
+               return NULL;
+       }
+
+       if (!g_module_symbol (module, factory_name, &factory)) {
+               g_set_error (error,
+                            NM_CONNECTION_ERROR,
+                            NM_CONNECTION_ERROR_FAILED,
+                            _("cannot load factory %s from plugin %s: %s"),
+                            factory_name, module_name, g_module_error ());
+               g_module_close (module);
+               return NULL;
+       }
+
+       /* we cannot ever unload the module because it creates glib types, which
+        * cannot be unregistered. */
+       g_module_make_resident (module);
+
+       editor = editor_factory (factory,
+                                editor_plugin,
+                                connection,
+                                user_data,
+                                error);
+       if (!editor) {
+               if (error && !*error ) {
+                       g_set_error_literal (error,
+                                            NM_CONNECTION_ERROR,
+                                            NM_CONNECTION_ERROR_FAILED,
+                                            _("unknown error creating editor instance"));
+                       g_return_val_if_reached (NULL);
+               }
+               return NULL;
+       }
+
+       g_return_val_if_fail (NM_IS_VPN_EDITOR (editor), NULL);
+       return editor;
+}
+
diff --git a/properties/nm-vpn-plugin-utils.h b/properties/nm-vpn-plugin-utils.h
new file mode 100644
index 0000000..3efad44
--- /dev/null
+++ b/properties/nm-vpn-plugin-utils.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2016 Red Hat, Inc.
+ */
+
+#ifndef __NM_VPN_PLUGIN_UTILS_H__
+#define __NM_VPN_PLUGIN_UTILS_H__
+
+typedef NMVpnEditor *(NMVpnPluginUtilsEditorFactory) (gpointer factory,
+                                                      NMVpnEditorPlugin *editor_plugin,
+                                                      NMConnection *connection,
+                                                      gpointer user_data,
+                                                      GError **error);
+
+NMVpnEditor *nm_vpn_plugin_utils_load_editor (const char *module_name,
+                                              const char *factory_name,
+                                              NMVpnPluginUtilsEditorFactory editor_factory,
+                                              NMVpnEditorPlugin *editor_plugin,
+                                              NMConnection *connection,
+                                              gpointer user_data,
+                                              GError **error);
+
+#endif /* __NM_VPN_PLUGIN_UTILS_H__ */
+
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