Commit 3054e29c authored by Julian Bouzas's avatar Julian Bouzas
Browse files

modules: add new API module to monitor files

parent 9ebea297
Pipeline #373135 passed with stages
in 1 minute and 46 seconds
......@@ -166,6 +166,17 @@ shared_library(
dependencies : [wp_dep, pipewire_dep, mathlib],
)
shared_library(
'wireplumber-module-file-monitor-api',
[
'module-file-monitor-api.c',
],
c_args : [common_c_args, '-DG_LOG_DOMAIN="m-file-monitor-api"'],
install : true,
install_dir : wireplumber_module_dir,
dependencies : [wp_dep, pipewire_dep],
)
if wpipc_dep.found()
shared_library(
'wireplumber-module-ipc',
......
/* WirePlumber
*
* Copyright © 2021 Collabora Ltd.
* @author Julian Bouzas <julian.bouzas@collabora.com>
*
* SPDX-License-Identifier: MIT
*/
#include <stdio.h>
#include <wp/wp.h>
struct _WpFileMonitorApi
{
WpPlugin parent;
GHashTable *monitors;
};
enum {
ACTION_ADD_WATCH,
ACTION_REMOVE_WATCH,
SIGNAL_CHANGED,
N_SIGNALS
};
static guint signals[N_SIGNALS] = {0};
G_DECLARE_FINAL_TYPE (WpFileMonitorApi, wp_file_monitor_api, WP,
FILE_MONITOR_API, WpPlugin)
G_DEFINE_TYPE (WpFileMonitorApi, wp_file_monitor_api, WP_TYPE_PLUGIN)
static void
wp_file_monitor_api_init (WpFileMonitorApi * self)
{
self->monitors = g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
g_object_unref);
}
static void
wp_file_monitor_api_finalize (GObject * object)
{
WpFileMonitorApi * self = WP_FILE_MONITOR_API (object);
g_clear_pointer (&self->monitors, g_hash_table_unref);
G_OBJECT_CLASS (wp_file_monitor_api_parent_class)->finalize (object);
}
static void
on_file_monitor_changed (GFileMonitor *monitor, GFile *file, GFile *other,
GFileMonitorEvent evtype, gpointer data)
{
WpFileMonitorApi * self = WP_FILE_MONITOR_API (data);
g_autofree char *fpath = g_file_get_path (file);
g_autofree char *opath = NULL;
const gchar *evtype_str = NULL;
if (other)
opath = g_file_get_path (other);
switch(evtype) {
case G_FILE_MONITOR_EVENT_CHANGED:
evtype_str = "changed";
break;
case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
evtype_str = "changes-done-hint";
break;
case G_FILE_MONITOR_EVENT_DELETED:
evtype_str = "deleted";
break;
case G_FILE_MONITOR_EVENT_CREATED:
evtype_str = "created";
break;
case G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED:
evtype_str = "attribute-changed";
break;
case G_FILE_MONITOR_EVENT_PRE_UNMOUNT:
evtype_str = "pre-unmount";
break;
case G_FILE_MONITOR_EVENT_UNMOUNTED:
evtype_str = "unmounted";
break;
case G_FILE_MONITOR_EVENT_MOVED:
evtype_str = "moved";
break;
case G_FILE_MONITOR_EVENT_RENAMED:
evtype_str = "renamed";
break;
case G_FILE_MONITOR_EVENT_MOVED_IN:
evtype_str = "moved-in";
break;
case G_FILE_MONITOR_EVENT_MOVED_OUT:
evtype_str = "moved-out";
break;
default:
wp_warning_object (self, "Unknown event type %d", evtype);
break;
}
g_signal_emit (self, signals[SIGNAL_CHANGED], 0, fpath, opath, evtype_str);
}
static gboolean
wp_file_monitor_api_add_watch (WpFileMonitorApi * self, const gchar *path,
const gchar *flags_str)
{
g_autoptr (GError) e = NULL;
g_autoptr (GFileMonitor) fm = NULL;
g_autoptr (GFile) f = NULL;
GFileMonitorFlags flags = G_FILE_MONITOR_NONE;
/* don't do anything if the directory is already being watched */
if (g_hash_table_contains (self->monitors, path))
return TRUE;
/* get directory */
f = g_file_new_for_path (path);
if (!f) {
wp_warning_object (self, "Invalid directory '%s'", path);
return FALSE;
}
/* parse flags */
for (guint i = 0; flags_str && i < strlen (flags_str); i++) {
switch (flags_str[i]) {
case 'o': flags |= G_FILE_MONITOR_WATCH_MOUNTS; break;
case 's': flags |= G_FILE_MONITOR_SEND_MOVED; break;
case 'h': flags |= G_FILE_MONITOR_WATCH_HARD_LINKS; break;
case 'm': flags |= G_FILE_MONITOR_WATCH_MOVES; break;
default:
break;
}
}
/* create the file monitor for that directory */
fm = g_file_monitor_directory (f, flags, NULL, &e);
if (e) {
wp_warning_object (self, "Failed to add watch for directory '%s': %s", path,
e->message);
return FALSE;
}
/* handle changed signal and add it to monitors table */
g_signal_connect (fm, "changed", G_CALLBACK (on_file_monitor_changed), self);
g_hash_table_insert (self->monitors, g_strdup (path), g_steal_pointer (&fm));
return TRUE;
}
static void
wp_file_monitor_api_remove_watch (WpFileMonitorApi * self, const gchar *path)
{
g_hash_table_remove (self->monitors, path);
}
static void
wp_file_monitor_api_enable (WpPlugin * plugin, WpTransition * transition)
{
}
static void
wp_file_monitor_api_disable (WpPlugin * plugin)
{
WpFileMonitorApi * self = WP_FILE_MONITOR_API (plugin);
g_hash_table_remove_all (self->monitors);
}
static void
wp_file_monitor_api_class_init (WpFileMonitorApiClass * klass)
{
GObjectClass *object_class = (GObjectClass *) klass;
WpPluginClass *plugin_class = (WpPluginClass *) klass;
object_class->finalize = wp_file_monitor_api_finalize;
plugin_class->enable = wp_file_monitor_api_enable;
plugin_class->disable = wp_file_monitor_api_disable;
signals[ACTION_ADD_WATCH] = g_signal_new_class_handler (
"add-watch", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
(GCallback) wp_file_monitor_api_add_watch,
NULL, NULL, NULL,
G_TYPE_BOOLEAN, 2, G_TYPE_STRING, G_TYPE_STRING);
signals[ACTION_REMOVE_WATCH] = g_signal_new_class_handler (
"remove-watch", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
(GCallback) wp_file_monitor_api_remove_watch,
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_STRING);
signals[SIGNAL_CHANGED] = g_signal_new (
"changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL,
G_TYPE_NONE, 3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
}
WP_PLUGIN_EXPORT gboolean
wireplumber__module_init (WpCore * core, GVariant * args, GError ** error)
{
wp_plugin_register (g_object_new (wp_file_monitor_api_get_type (),
"name", "file-monitor-api",
"core", core,
NULL));
return TRUE;
}
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