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#include <glib.h>
#include <gmodule.h>
typedef void (*PluginStartup)();
typedef void (*PluginShutdown)();
typedef struct {
GModule *module;
char *name;
PluginStartup startup;
PluginShutdown shutdown;
} Plugin;
static gpointer load_sym(GModule *module, char *name, char *symbol)
{
gpointer var;
if (!g_module_symbol(module, symbol, &var)) {
g_warning("Failed to load symbol '%s' from plugin '%s'",
symbol, name);
var = NULL;
}
return var;
}
static Plugin *plugin_new(char *name)
{
Plugin *p;
char *path;
p = g_new(Plugin, 1);
path = g_build_filename(PLUGINDIR, name, NULL);
p->module = g_module_open(path, 0);
g_free(path);
if (p->module == NULL) {
path = g_build_filename(g_get_home_dir(), ".openbox", "plugins", name,
NULL);
p->module = g_module_open(path, 0);
g_free(path);
}
if (p->module == NULL) {
g_free(p);
return NULL;
}
p->startup = load_sym(p->module, name, "plugin_startup");
p->shutdown = load_sym(p->module, name, "plugin_shutdown");
if (p->startup == NULL || p->shutdown == NULL) {
g_module_close(p->module);
g_free(p);
return NULL;
}
p->name = g_strdup(name);
return p;
}
static void plugin_free(Plugin *p)
{
p->shutdown();
g_free(p->name);
g_module_close(p->module);
}
static GData *plugins = NULL;
void plugin_startup()
{
g_datalist_init(&plugins);
}
void plugin_shutdown()
{
g_datalist_clear(&plugins);
}
gboolean plugin_open(char *name)
{
Plugin *p;
if (g_datalist_get_data(&plugins, name) != NULL) {
g_warning("plugin '%s' already loaded, can't load again", name);
return TRUE;
}
p = plugin_new(name);
if (p == NULL) {
g_warning("failed to load plugin '%s'", name);
return FALSE;
}
g_datalist_set_data_full(&plugins, name, p, (GDestroyNotify) plugin_free);
p->startup();
return TRUE;
}
void plugin_close(char *name)
{
g_datalist_remove_data(&plugins, name);
}
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