#include "gnunet_os_lib.h"
#include "gnunet_plugin_lib.h"
+#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+
/**
* Linked list of active plugins.
*/
/**
* Setup libtool paths.
*/
-static void
+static void
plugin_init ()
{
int err;
err = lt_dlinit ();
if (err > 0)
- {
- fprintf (stderr,
- _("Initialization of plugin mechanism failed: %s!\n"),
- lt_dlerror ());
- return;
- }
+ {
+ FPRINTF (stderr, _("Initialization of plugin mechanism failed: %s!\n"),
+ lt_dlerror ());
+ return;
+ }
opath = lt_dlgetsearchpath ();
if (opath != NULL)
old_dlsearchpath = GNUNET_strdup (opath);
path = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
if (path != NULL)
+ {
+ if (opath != NULL)
+ {
+ GNUNET_asprintf (&cpath, "%s:%s", opath, path);
+ lt_dlsetsearchpath (cpath);
+ GNUNET_free (path);
+ GNUNET_free (cpath);
+ }
+ else
{
- if (opath != NULL)
- {
- GNUNET_asprintf (&cpath,
- "%s:%s",
- opath,
- path);
- lt_dlsetsearchpath (cpath);
- GNUNET_free (path);
- GNUNET_free (cpath);
- }
- else
- {
- lt_dlsetsearchpath (path);
- GNUNET_free (path);
- }
+ lt_dlsetsearchpath (path);
+ GNUNET_free (path);
}
+ }
}
{
lt_dlsetsearchpath (old_dlsearchpath);
if (old_dlsearchpath != NULL)
- {
- GNUNET_free (old_dlsearchpath);
- old_dlsearchpath = NULL;
- }
+ {
+ GNUNET_free (old_dlsearchpath);
+ old_dlsearchpath = NULL;
+ }
lt_dlexit ();
}
if (mptr == NULL)
mptr = lt_dlsym (plug->handle, initName);
if (mptr == NULL)
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("`%s' failed to resolve method '%s' with error: %s\n"),
- "lt_dlsym", &initName[1], lt_dlerror ());
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("`%s' failed to resolve method '%s' with error: %s\n"), "lt_dlsym",
+ &initName[1], lt_dlerror ());
GNUNET_free (initName);
return mptr;
}
* Test if a plugin exists.
*
* Note that the library must export a symbol called
- * "library_name_init" for the test to succeed.
+ * "library_name_init" for the test to succeed.
*
* @param library_name name of the plugin to test if it is installed
* @return GNUNET_YES if the plugin exists, GNUNET_NO if not
GNUNET_PLUGIN_Callback init;
struct PluginList plug;
- if (! initialized)
- {
- initialized = GNUNET_YES;
- plugin_init ();
- }
+ if (!initialized)
+ {
+ initialized = GNUNET_YES;
+ plugin_init ();
+ }
libhandle = lt_dlopenext (library_name);
if (libhandle == NULL)
return GNUNET_NO;
plug.handle = libhandle;
- plug.name = (char*) library_name;
+ plug.name = (char *) library_name;
init = resolve_function (&plug, "init");
if (init == NULL)
- {
- GNUNET_break (0);
- lt_dlclose (libhandle);
- return GNUNET_NO;
- }
+ {
+ GNUNET_break (0);
+ lt_dlclose (libhandle);
+ return GNUNET_NO;
+ }
lt_dlclose (libhandle);
return GNUNET_YES;
}
GNUNET_PLUGIN_Callback init;
void *ret;
- if (! initialized)
- {
- initialized = GNUNET_YES;
- plugin_init ();
- }
+ if (!initialized)
+ {
+ initialized = GNUNET_YES;
+ plugin_init ();
+ }
libhandle = lt_dlopenext (library_name);
if (libhandle == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("`%s' failed for library `%s' with error: %s\n"),
- "lt_dlopenext", library_name, lt_dlerror ());
- return NULL;
- }
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("`%s' failed for library `%s' with error: %s\n"), "lt_dlopenext",
+ library_name, lt_dlerror ());
+ return NULL;
+ }
plug = GNUNET_malloc (sizeof (struct PluginList));
plug->handle = libhandle;
plug->name = GNUNET_strdup (library_name);
plugins = plug;
init = resolve_function (plug, "init");
if ((init == NULL) || (NULL == (ret = init (arg))))
- {
- lt_dlclose (libhandle);
- GNUNET_free (plug->name);
- plugins = plug->next;
- GNUNET_free (plug);
- return NULL;
- }
+ {
+ lt_dlclose (libhandle);
+ GNUNET_free (plug->name);
+ plugins = plug->next;
+ GNUNET_free (plug);
+ return NULL;
+ }
return ret;
}
prev = NULL;
pos = plugins;
while ((pos != NULL) && (0 != strcmp (pos->name, library_name)))
- {
- prev = pos;
- pos = pos->next;
- }
+ {
+ prev = pos;
+ pos = pos->next;
+ }
if (pos == NULL)
return NULL;
GNUNET_free (pos->name);
GNUNET_free (pos);
if (plugins == NULL)
- {
- plugin_fini();
- initialized = GNUNET_NO;
- }
+ {
+ plugin_fini ();
+ initialized = GNUNET_NO;
+ }
return ret;
}
+struct LoadAllContext
+{
+ const char *basename;
+ void *arg;
+ GNUNET_PLUGIN_LoaderCallback cb;
+ void *cb_cls;
+};
+
+
+static int
+find_libraries (void *cls, const char *filename)
+{
+ struct LoadAllContext *lac = cls;
+ const char *slashpos;
+ const char *libname;
+ char *basename;
+ char *dot;
+ void *lib_ret;
+ size_t n;
+
+ libname = filename;
+ while (NULL != (slashpos = strstr (libname, DIR_SEPARATOR_STR)))
+ libname = slashpos + 1;
+ n = strlen (libname);
+ if (0 != strncmp (lac->basename, libname, strlen (lac->basename)))
+ return GNUNET_OK; /* wrong name */
+ if ((n > 3) && (0 == strcmp (&libname[n - 3], ".la")))
+ return GNUNET_OK; /* .la file */
+ basename = GNUNET_strdup (libname);
+ if (NULL != (dot = strstr (basename, ".")))
+ *dot = '\0';
+ lib_ret = GNUNET_PLUGIN_load (basename, lac->arg);
+ if (NULL != lib_ret)
+ lac->cb (lac->cb_cls, basename, lib_ret);
+ GNUNET_free (basename);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Load all compatible plugins with the given base name.
+ *
+ * Note that the library must export symbols called
+ * "basename_ANYTHING_init" and "basename_ANYTHING__done". These will
+ * be called when the library is loaded and unloaded respectively.
+ *
+ * @param basename basename of the plugins to load
+ * @param arg argument to the plugin initialization function
+ * @param cb function to call for each plugin found
+ * @param cb_cls closure for 'cb'
+ */
+void
+GNUNET_PLUGIN_load_all (const char *basename, void *arg,
+ GNUNET_PLUGIN_LoaderCallback cb, void *cb_cls)
+{
+ struct LoadAllContext lac;
+ char *path;
+
+ path = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
+ if (path == NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Could not determine plugin installation path.\n"));
+ return;
+ }
+ lac.basename = basename;
+ lac.arg = arg;
+ lac.cb = cb;
+ lac.cb_cls = cb_cls;
+ GNUNET_DISK_directory_scan (path, &find_libraries, &lac);
+ GNUNET_free (path);
+}
+
/* end of plugin.c */
projects / oweals / gnunet.git / blobdiff