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|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
#include <string.h>
#include <gmodule.h>
#define G_UDEV_API_IS_SUBJECT_TO_CHANGE
#include <gudev/gudev.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>
#include "mm-manager.h"
#include "mm-errors.h"
#include "mm-plugin.h"
static gboolean impl_manager_enumerate_devices (MMManager *manager,
GPtrArray **devices,
GError **err);
#include "mm-manager-glue.h"
G_DEFINE_TYPE (MMManager, mm_manager, G_TYPE_OBJECT)
enum {
DEVICE_ADDED,
DEVICE_REMOVED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
#define MM_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_MANAGER, MMManagerPrivate))
#define DBUS_PATH_TAG "dbus-path"
typedef struct {
DBusGConnection *connection;
GUdevClient *udev;
GSList *plugins;
GHashTable *modems;
} MMManagerPrivate;
static MMPlugin *
load_plugin (const char *path)
{
MMPlugin *plugin = NULL;
GModule *module;
MMPluginCreateFunc plugin_create_func;
int *major_plugin_version, *minor_plugin_version;
module = g_module_open (path, G_MODULE_BIND_LAZY);
if (!module) {
g_warning ("Could not load plugin %s: %s", path, g_module_error ());
return NULL;
}
if (!g_module_symbol (module, "mm_plugin_major_version", (gpointer *) &major_plugin_version)) {
g_warning ("Could not load plugin %s: Missing major version info", path);
goto out;
}
if (*major_plugin_version != MM_PLUGIN_MAJOR_VERSION) {
g_warning ("Could not load plugin %s: Plugin major version %d, %d is required",
path, *major_plugin_version, MM_PLUGIN_MAJOR_VERSION);
goto out;
}
if (!g_module_symbol (module, "mm_plugin_minor_version", (gpointer *) &minor_plugin_version)) {
g_warning ("Could not load plugin %s: Missing minor version info", path);
goto out;
}
if (*minor_plugin_version != MM_PLUGIN_MINOR_VERSION) {
g_warning ("Could not load plugin %s: Plugin minor version %d, %d is required",
path, *minor_plugin_version, MM_PLUGIN_MINOR_VERSION);
goto out;
}
if (!g_module_symbol (module, "mm_plugin_create", (gpointer *) &plugin_create_func)) {
g_warning ("Could not load plugin %s: %s", path, g_module_error ());
goto out;
}
plugin = (*plugin_create_func) ();
if (plugin) {
g_object_weak_ref (G_OBJECT (plugin), (GWeakNotify) g_module_close, module);
g_message ("Loaded plugin %s", mm_plugin_get_name (plugin));
} else
g_warning ("Could not load plugin %s: initialization failed", path);
out:
if (!plugin)
g_module_close (module);
return plugin;
}
static void
load_plugins (MMManager *manager)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
GDir *dir;
const char *fname;
if (!g_module_supported ()) {
g_warning ("GModules are not supported on your platform!");
return;
}
dir = g_dir_open (PLUGINDIR, 0, NULL);
if (!dir) {
g_warning ("No plugins found");
return;
}
while ((fname = g_dir_read_name (dir)) != NULL) {
char *path;
MMPlugin *plugin;
if (!g_str_has_suffix (fname, G_MODULE_SUFFIX))
continue;
path = g_module_build_path (PLUGINDIR, fname);
plugin = load_plugin (path);
g_free (path);
if (plugin)
priv->plugins = g_slist_append (priv->plugins, plugin);
}
g_dir_close (dir);
}
MMManager *
mm_manager_new (DBusGConnection *bus)
{
MMManager *manager;
g_return_val_if_fail (bus != NULL, NULL);
manager = (MMManager *) g_object_new (MM_TYPE_MANAGER, NULL);
if (manager) {
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
priv->connection = dbus_g_connection_ref (bus);
dbus_g_connection_register_g_object (priv->connection,
MM_DBUS_PATH,
G_OBJECT (manager));
}
return manager;
}
static void
remove_modem (MMManager *manager, MMModem *modem)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
char *device;
device = mm_modem_get_device (modem);
g_assert (device);
g_debug ("Removed modem %s", device);
g_signal_emit (manager, signals[DEVICE_REMOVED], 0, modem);
g_hash_table_remove (priv->modems, device);
g_free (device);
}
static void
modem_valid (MMModem *modem, GParamSpec *pspec, gpointer user_data)
{
MMManager *manager = MM_MANAGER (user_data);
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
static guint32 id = 0;
char *path, *device;
if (mm_modem_get_valid (modem)) {
path = g_strdup_printf (MM_DBUS_PATH"/Modems/%d", id++);
dbus_g_connection_register_g_object (priv->connection, path, G_OBJECT (modem));
g_object_set_data_full (G_OBJECT (modem), DBUS_PATH_TAG, path, (GDestroyNotify) g_free);
device = mm_modem_get_device (modem);
g_assert (device);
g_debug ("Exported modem %s", device);
g_free (device);
g_signal_emit (manager, signals[DEVICE_ADDED], 0, modem);
} else
remove_modem (manager, modem);
}
static void
add_modem (MMManager *manager, MMModem *modem)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
char *device;
gboolean valid = FALSE;
device = mm_modem_get_device (modem);
g_assert (device);
if (!g_hash_table_lookup (priv->modems, device)) {
g_hash_table_insert (priv->modems, g_strdup (device), modem);
g_debug ("Added modem %s", device);
g_signal_connect (modem, "notify::valid", G_CALLBACK (modem_valid), manager);
g_object_get (modem, MM_MODEM_VALID, &valid, NULL);
if (valid)
modem_valid (modem, NULL, manager);
}
g_free (device);
}
static void
enumerate_devices_cb (gpointer key, gpointer val, gpointer user_data)
{
MMModem *modem = MM_MODEM (val);
GPtrArray **devices = (GPtrArray **) user_data;
const char *path;
gboolean valid = FALSE;
g_object_get (G_OBJECT (modem), MM_MODEM_VALID, &valid, NULL);
if (valid) {
path = g_object_get_data (G_OBJECT (modem), DBUS_PATH_TAG);
g_return_if_fail (path != NULL);
g_ptr_array_add (*devices, g_strdup (path));
}
}
static gboolean
impl_manager_enumerate_devices (MMManager *manager,
GPtrArray **devices,
GError **err)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
*devices = g_ptr_array_sized_new (g_hash_table_size (priv->modems));
g_hash_table_foreach (priv->modems, enumerate_devices_cb, devices);
return TRUE;
}
typedef struct {
MMModem *modem;
const char *subsys;
const char *name;
} FindPortInfo;
static void
find_port (gpointer key, gpointer data, gpointer user_data)
{
FindPortInfo *info = user_data;
MMModem *modem = MM_MODEM (data);
if (!info->modem && mm_modem_owns_port (modem, info->subsys, info->name))
info->modem = modem;
}
static MMModem *
find_modem_for_port (MMManager *manager, const char *subsys, const char *name)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
FindPortInfo info = { NULL, subsys, name };
g_hash_table_foreach (priv->modems, find_port, &info);
return info.modem;
}
static void
device_added (MMManager *manager, GUdevDevice *device)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
GSList *iter;
MMModem *modem = NULL;
const char *subsys, *name;
MMPlugin *best_plugin = NULL;
guint32 best_level = 0;
GError *error = NULL;
g_return_if_fail (device != NULL);
subsys = g_udev_device_get_subsystem (device);
name = g_udev_device_get_name (device);
if (find_modem_for_port (manager, subsys, name))
return;
/* Build up the list of plugins that support this port */
for (iter = priv->plugins; iter; iter = iter->next) {
MMPlugin *plugin = MM_PLUGIN (iter->data);
guint32 level;
level = mm_plugin_supports_port (plugin, subsys, name);
if (level > best_level) {
best_plugin = plugin;
best_level = level;
}
}
/* Let the best plugin handle this port */
if (!best_plugin)
return;
modem = mm_plugin_grab_port (best_plugin, subsys, name, &error);
if (modem) {
guint32 modem_type = MM_MODEM_TYPE_UNKNOWN;
const char *type_name = "UNKNOWN";
g_object_get (G_OBJECT (modem), MM_MODEM_TYPE, &modem_type, NULL);
if (modem_type == MM_MODEM_TYPE_GSM)
type_name = "GSM";
else if (modem_type == MM_MODEM_TYPE_CDMA)
type_name = "CDMA";
g_message ("(%s): %s modem %s claimed port %s",
mm_plugin_get_name (best_plugin),
type_name,
mm_modem_get_device (modem),
name);
} else {
g_warning ("%s: plugin '%s' claimed to support %s/%s but couldn't: (%d) %s",
__func__, mm_plugin_get_name (best_plugin), subsys, name,
error ? error->code : -1,
(error && error->message) ? error->message : "(unknown)");
return;
}
add_modem (manager, modem);
}
static void
device_removed (MMManager *manager, GUdevDevice *device)
{
MMModem *modem;
const char *subsys, *name;
g_return_if_fail (device != NULL);
subsys = g_udev_device_get_subsystem (device);
name = g_udev_device_get_name (device);
modem = find_modem_for_port (manager, subsys, name);
if (modem)
mm_modem_release_port (modem, subsys, name);
}
static void
handle_uevent (GUdevClient *client,
const char *action,
GUdevDevice *device,
gpointer user_data)
{
MMManager *self = MM_MANAGER (user_data);
const char *subsys;
g_return_if_fail (action != NULL);
/* A bit paranoid */
subsys = g_udev_device_get_subsystem (device);
g_return_if_fail (subsys != NULL);
g_return_if_fail (!strcmp (subsys, "tty") || !strcmp (subsys, "net"));
if (!strcmp (action, "add"))
device_added (self, device);
else if (!strcmp (action, "remove"))
device_removed (self, device);
}
void
mm_manager_start (MMManager *manager)
{
MMManagerPrivate *priv;
GList *devices, *iter;
g_return_if_fail (manager != NULL);
g_return_if_fail (MM_IS_MANAGER (manager));
priv = MM_MANAGER_GET_PRIVATE (manager);
devices = g_udev_client_query_by_subsystem (priv->udev, "tty");
for (iter = devices; iter; iter = g_list_next (iter))
device_added (manager, G_UDEV_DEVICE (iter->data));
devices = g_udev_client_query_by_subsystem (priv->udev, "net");
for (iter = devices; iter; iter = g_list_next (iter))
device_added (manager, G_UDEV_DEVICE (iter->data));
}
static void
mm_manager_init (MMManager *manager)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
const char *subsys[3] = { "tty", "net", NULL };
priv->modems = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
load_plugins (manager);
priv->udev = g_udev_client_new (subsys);
g_assert (priv->udev);
g_signal_connect (priv->udev, "uevent", G_CALLBACK (handle_uevent), manager);
}
static void
finalize (GObject *object)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (object);
g_hash_table_destroy (priv->modems);
g_slist_foreach (priv->plugins, (GFunc) g_object_unref, NULL);
g_slist_free (priv->plugins);
if (priv->udev)
g_object_unref (priv->udev);
if (priv->connection)
dbus_g_connection_unref (priv->connection);
G_OBJECT_CLASS (mm_manager_parent_class)->finalize (object);
}
static void
mm_manager_class_init (MMManagerClass *manager_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (manager_class);
g_type_class_add_private (object_class, sizeof (MMManagerPrivate));
/* Virtual methods */
object_class->finalize = finalize;
/* Signals */
signals[DEVICE_ADDED] =
g_signal_new ("device-added",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (MMManagerClass, device_added),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
G_TYPE_OBJECT);
signals[DEVICE_REMOVED] =
g_signal_new ("device-removed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (MMManagerClass, device_removed),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
G_TYPE_OBJECT);
dbus_g_object_type_install_info (G_TYPE_FROM_CLASS (manager_class),
&dbus_glib_mm_manager_object_info);
dbus_g_error_domain_register (MM_SERIAL_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_SERIAL_ERROR);
dbus_g_error_domain_register (MM_MODEM_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_MODEM_ERROR);
dbus_g_error_domain_register (MM_MODEM_CONNECT_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_MODEM_CONNECT_ERROR);
dbus_g_error_domain_register (MM_MOBILE_ERROR, "org.freedesktop.ModemManager.Modem.Gsm", MM_TYPE_MOBILE_ERROR);
}
|