mirror of git://git.sysmocom.de/ofono
Add plugin support infrastructure
This commit is contained in:
Marcel Holtmann
parent
e059f43fae
commit
ed08e2adee
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@ -76,5 +76,5 @@ AC_SUBST(DBUS_DATADIR)
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AC_SUBST([GDBUS_CFLAGS], ['$(DBUS_CFLAGS) -I$(top_srcdir)/gdbus'])
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AC_SUBST([GDBUS_LIBS], ['$(top_builddir)/gdbus/libgdbus.la $(DBUS_LIBS)'])
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AC_OUTPUT(Makefile gdbus/Makefile include/Makefile
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AC_OUTPUT(Makefile gdbus/Makefile include/Makefile include/version.h
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src/Makefile plugins/Makefile)
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@ -1,7 +1,9 @@
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includedir = @includedir@/ofono
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include_HEADERS = log.h
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include_HEADERS = log.h plugin.h
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nodist_include_HEADERS = version.h
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MAINTAINERCLEANFILES = Makefile.in
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@ -10,6 +12,8 @@ all-local:
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mkdir ofono; \
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list='$(include_HEADERS)'; for i in $$list; \
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do $(LN_S) $(abs_top_srcdir)/include/$$i ofono/$$i; done; \
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list='$(nodist_include_HEADERS)'; for i in $$list; \
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do $(LN_S) $(abs_top_builddir)/include/$$i ofono/$$i; done; \
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fi
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clean-local:
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@ -0,0 +1,76 @@
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/*
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*
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* oFono - Open Telephony stack for Linux
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*
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* Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __OFONO_PLUGIN_H
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#define __OFONO_PLUGIN_H
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#include <ofono/version.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef OFONO_API_SUBJECT_TO_CHANGE
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#error "Please define OFONO_API_SUBJECT_TO_CHANGE to acknowledge your \
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understanding that oFono hasn't reached a stable API."
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#endif
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#define OFONO_PLUGIN_PRIORITY_LOW -100
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#define OFONO_PLUGIN_PRIORITY_DEFAULT 0
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#define OFONO_PLUGIN_PRIORITY_HIGH 100
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/**
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* SECTION:plugin
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* @title: Plugin premitives
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* @short_description: Functions for declaring plugins
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*/
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struct ofono_plugin_desc {
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const char *name;
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const char *description;
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const char *version;
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int priority;
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int (*init) (void);
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void (*exit) (void);
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};
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/**
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* OFONO_PLUGIN_DEFINE:
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* @name: plugin name
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* @description: plugin description
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* @version: plugin version string
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* @init: init function called on plugin loading
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* @exit: exit function called on plugin removal
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*
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* Macro for defining a plugin descriptor
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*/
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#define OFONO_PLUGIN_DEFINE(name, description, version, priority, init, exit) \
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extern struct ofono_plugin_desc ofono_plugin_desc \
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__attribute__ ((visibility("default"))); \
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struct ofono_plugin_desc ofono_plugin_desc = { \
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#name, description, version, priority, init, exit \
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* __OFONO_PLUGIN_H */
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@ -0,0 +1,35 @@
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/*
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*
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* oFono - Open Telephony stack for Linux
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*
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* Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __OFONO_VERSION_H
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#define __OFONO_VERSION_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define OFONO_VERSION "@VERSION@"
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#ifdef __cplusplus
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}
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#endif
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#endif /* __OFONO_VERSION_H */
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@ -1,7 +1,7 @@
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sbin_PROGRAMS = ofonod
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ofonod_SOURCES = main.c ofono.h log.c
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ofonod_SOURCES = main.c ofono.h log.c plugin.c
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ofonod_LDADD = @GDBUS_LIBS@ @GLIB_LIBS@ @GTHREAD_LIBS@ -ldl
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@ -29,6 +29,10 @@ int main(int argc, char *argv[])
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{
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__ofono_log_init();
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__ofono_plugin_init(NULL, NULL);
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__ofono_plugin_cleanup();
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__ofono_log_cleanup();
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return 0;
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@ -27,3 +27,8 @@
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int __ofono_log_init(void);
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void __ofono_log_cleanup(void);
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#include <ofono/plugin.h>
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int __ofono_plugin_init(const char *pattern, const char *exclude);
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void __ofono_plugin_cleanup(void);
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@ -0,0 +1,162 @@
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/*
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*
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* oFono - Open Telephony stack for Linux
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*
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* Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <dlfcn.h>
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#include <glib.h>
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#include "ofono.h"
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static GSList *plugins = NULL;
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struct ofono_plugin {
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void *handle;
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gboolean active;
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struct ofono_plugin_desc *desc;
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};
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static gint compare_priority(gconstpointer a, gconstpointer b)
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{
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const struct ofono_plugin *plugin1 = a;
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const struct ofono_plugin *plugin2 = b;
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return plugin2->desc->priority - plugin1->desc->priority;
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}
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static gboolean add_plugin(void *handle, struct ofono_plugin_desc *desc)
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{
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struct ofono_plugin *plugin;
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if (desc->init == NULL)
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return FALSE;
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if (g_str_equal(desc->version, OFONO_VERSION) == FALSE) {
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DBG("version mismatch for %s", desc->description);
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return FALSE;
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}
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plugin = g_try_new0(struct ofono_plugin, 1);
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if (plugin == NULL)
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return FALSE;
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plugin->handle = handle;
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plugin->active = FALSE;
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plugin->desc = desc;
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plugins = g_slist_insert_sorted(plugins, plugin, compare_priority);
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return TRUE;
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}
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int __ofono_plugin_init(const char *pattern, const char *exclude)
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{
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GSList *list;
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GDir *dir;
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const gchar *file;
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gchar *filename;
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DBG("");
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dir = g_dir_open(PLUGINDIR, 0, NULL);
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if (dir != NULL) {
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while ((file = g_dir_read_name(dir)) != NULL) {
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void *handle;
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struct ofono_plugin_desc *desc;
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if (g_str_has_prefix(file, "lib") == TRUE ||
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g_str_has_suffix(file, ".so") == FALSE)
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continue;
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filename = g_build_filename(PLUGINDIR, file, NULL);
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handle = dlopen(filename, RTLD_NOW);
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if (handle == NULL) {
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g_warning("Can't load %s: %s", filename,
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dlerror());
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g_free(filename);
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continue;
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}
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g_free(filename);
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desc = dlsym(handle, "ofono_plugin_desc");
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if (desc == NULL) {
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g_warning("Can't load symbol: %s", dlerror());
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dlclose(handle);
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continue;
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}
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if (exclude != NULL && g_pattern_match_simple(exclude,
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desc->name) == TRUE) {
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DBG("excluding %s", desc->description);
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dlclose(handle);
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continue;
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}
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if (pattern != NULL && g_pattern_match_simple(pattern,
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desc->name) == FALSE) {
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DBG("ignoring %s", desc->description);
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dlclose(handle);
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continue;
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}
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if (add_plugin(handle, desc) == FALSE)
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dlclose(handle);
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}
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g_dir_close(dir);
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}
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for (list = plugins; list; list = list->next) {
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struct ofono_plugin *plugin = list->data;
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if (plugin->desc->init() < 0)
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continue;
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plugin->active = TRUE;
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}
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return 0;
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}
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void __ofono_plugin_cleanup(void)
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{
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GSList *list;
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DBG("");
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for (list = plugins; list; list = list->next) {
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struct ofono_plugin *plugin = list->data;
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if (plugin->active == TRUE && plugin->desc->exit)
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plugin->desc->exit();
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dlclose(plugin->handle);
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g_free(plugin);
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}
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g_slist_free(plugins);
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}
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