ev-daemon.c File Reference

#include "config.h"
#include <glib.h>
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "ev-daemon-gdbus-generated.h"

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Data Structures
struct	_EvDaemonApplicationClass
struct	_EvDaemonApplication
struct	EvDoc

Macros
#define	G_LOG_DOMAIN   "EvinceDaemon"
#define	EV_DBUS_DAEMON_NAME   "org.gnome.evince.Daemon"
#define	EV_DBUS_DAEMON_INTERFACE_NAME   "org.gnome.evince.Daemon"
#define	EV_DBUS_DAEMON_OBJECT_PATH   "/org/gnome/evince/Daemon"
#define	EV_DBUS_WINDOW_INTERFACE_NAME   "org.gnome.evince.Window"
#define	DAEMON_TIMEOUT   (30) /* seconds */
#define	LOG   g_debug
#define	EV_TYPE_DAEMON_APPLICATION   (ev_daemon_application_get_type ())
#define	EV_DAEMON_APPLICATION(object)   (G_TYPE_CHECK_INSTANCE_CAST ((object), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplication))
#define	EV_DAEMON_APPLICATION_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplicationClass))
#define	EV_IS_DAEMON_APPLICATION(object)   (G_TYPE_CHECK_INSTANCE_TYPE ((object), EV_TYPE_DAEMON_APPLICATION))
#define	EV_IS_DAEMON_APPLICATION_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_DAEMON_APPLICATION))
#define	EV_DAEMON_APPLICATION_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplicationClass))

Typedefs
typedef struct _EvDaemonApplication	EvDaemonApplication
typedef struct _EvDaemonApplicationClass	EvDaemonApplicationClass

Functions
static GType	ev_daemon_application_get_type (void)
static void	ev_doc_free (EvDoc *doc)
static EvDoc *	ev_daemon_application_find_doc (EvDaemonApplication *application, const gchar *uri)
static gboolean	spawn_evince (const gchar *uri)
static void	name_appeared_cb (GDBusConnection *connection, const gchar *name, const gchar *name_owner, gpointer user_data)
static void	name_vanished_cb (GDBusConnection *connection, const gchar *name, gpointer user_data)
static void	process_pending_invocations (EvDaemonApplication *application, const gchar *uri, const gchar *dbus_name)
static void	document_loaded_cb (GDBusConnection *connection, const gchar *sender_name, const gchar *object_path, const gchar *interface_name, const gchar *signal_name, GVariant *parameters, gpointer user_data)
static gboolean	handle_register_document_cb (EvDaemon *object, GDBusMethodInvocation *invocation, const gchar *uri, EvDaemonApplication *application)
static gboolean	handle_unregister_document_cb (EvDaemon *object, GDBusMethodInvocation *invocation, const gchar *uri, EvDaemonApplication *application)
static gboolean	handle_find_document_cb (EvDaemon *object, GDBusMethodInvocation *invocation, const gchar *uri, gboolean spawn, EvDaemonApplication *application)
static gboolean	ev_daemon_application_dbus_register (GApplication *gapplication, GDBusConnection *connection, const gchar *object_path, GError **error)
static void	ev_daemon_application_dbus_unregister (GApplication *gapplication, GDBusConnection *connection, const gchar *object_path)
static void	ev_daemon_application_init (EvDaemonApplication *application)
static void	ev_daemon_application_finalize (GObject *object)
static void	ev_daemon_application_class_init (EvDaemonApplicationClass *klass)
gint	main (gint argc, gchar **argv)

Macro Definition Documentation

#define DAEMON_TIMEOUT   (30) /* seconds */

Definition at line 42 of file ev-daemon.c.

#define EV_DAEMON_APPLICATION

(

object)

(G_TYPE_CHECK_INSTANCE_CAST ((object), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplication))

Definition at line 47 of file ev-daemon.c.

#define EV_DAEMON_APPLICATION_CLASS

(

klass)

(G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplicationClass))

Definition at line 48 of file ev-daemon.c.

#define EV_DAEMON_APPLICATION_GET_CLASS

(

obj)

(G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_DAEMON_APPLICATION, EvDaemonApplicationClass))

Definition at line 51 of file ev-daemon.c.

#define EV_DBUS_DAEMON_INTERFACE_NAME   "org.gnome.evince.Daemon"

Definition at line 37 of file ev-daemon.c.

#define EV_DBUS_DAEMON_NAME   "org.gnome.evince.Daemon"

Definition at line 36 of file ev-daemon.c.

#define EV_DBUS_DAEMON_OBJECT_PATH   "/org/gnome/evince/Daemon"

Definition at line 38 of file ev-daemon.c.

#define EV_DBUS_WINDOW_INTERFACE_NAME   "org.gnome.evince.Window"

Definition at line 40 of file ev-daemon.c.

#define EV_IS_DAEMON_APPLICATION

(

object)

(G_TYPE_CHECK_INSTANCE_TYPE ((object), EV_TYPE_DAEMON_APPLICATION))

Definition at line 49 of file ev-daemon.c.

#define EV_IS_DAEMON_APPLICATION_CLASS

(

klass)

(G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_DAEMON_APPLICATION))

Definition at line 50 of file ev-daemon.c.

#define EV_TYPE_DAEMON_APPLICATION   (ev_daemon_application_get_type ())

Definition at line 46 of file ev-daemon.c.

#define G_LOG_DOMAIN   "EvinceDaemon"

Definition at line 24 of file ev-daemon.c.

#define LOG   g_debug

Definition at line 44 of file ev-daemon.c.

Typedef Documentation

typedef struct _EvDaemonApplication EvDaemonApplication

Definition at line 53 of file ev-daemon.c.

typedef struct _EvDaemonApplicationClass EvDaemonApplicationClass

Definition at line 54 of file ev-daemon.c.

Function Documentation

static void document_loaded_cb ( GDBusConnection *  connection, const gchar *  sender_name, const gchar *  object_path, const gchar *  interface_name, const gchar *  signal_name, GVariant *  parameters, gpointer  user_data  )

static

Definition at line 192 of file ev-daemon.c.

{
        EvDaemonApplication *application = EV_DAEMON_APPLICATION (user_data);
        const gchar *uri;
        EvDoc *doc;

    g_variant_get (parameters, "(&s)", &uri);
        doc = ev_daemon_application_find_doc (application, uri);

    if (doc == NULL)
        return;
        if (strcmp (uri, doc->uri) == 0) {
        process_pending_invocations (application, uri, sender_name);
        }

    g_dbus_connection_signal_unsubscribe (connection, doc->loaded_id);
        doc->loaded_id = 0;
}

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static void ev_daemon_application_class_init ( EvDaemonApplicationClass *  klass)

static

Definition at line 442 of file ev-daemon.c.

{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
        GApplicationClass *g_application_class = G_APPLICATION_CLASS (klass);

        object_class->finalize = ev_daemon_application_finalize;

        g_application_class->dbus_register = ev_daemon_application_dbus_register;
        g_application_class->dbus_unregister = ev_daemon_application_dbus_unregister;
}

static gboolean ev_daemon_application_dbus_register ( GApplication *  gapplication, GDBusConnection *  connection, const gchar *  object_path, GError **  error  )

static

Definition at line 368 of file ev-daemon.c.

{
        EvDaemonApplication *application = EV_DAEMON_APPLICATION (gapplication);
        EvDaemon *skeleton;

        if (!G_APPLICATION_CLASS (ev_daemon_application_parent_class)->dbus_register (gapplication,
                                                                                      connection,
                                                                                      object_path,
                                                                                      error))
                return FALSE;

        skeleton = ev_daemon_skeleton_new ();
        if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (skeleton),
                                               connection,
                                               EV_DBUS_DAEMON_OBJECT_PATH,
                                               error)) {
                g_object_unref (skeleton);
                return FALSE;
        }

        application->daemon = skeleton;
        g_signal_connect (skeleton, "handle-register-document",
                          G_CALLBACK (handle_register_document_cb), application);
        g_signal_connect (skeleton, "handle-unregister-document",
                          G_CALLBACK (handle_unregister_document_cb), application);
        g_signal_connect (skeleton, "handle-find-document",
                          G_CALLBACK (handle_find_document_cb), application);
        return TRUE;
}

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static void ev_daemon_application_dbus_unregister ( GApplication *  gapplication, GDBusConnection *  connection, const gchar *  object_path  )

static

Definition at line 402 of file ev-daemon.c.

{
        EvDaemonApplication *application = EV_DAEMON_APPLICATION (gapplication);

        if (application->daemon) {
                g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (application->daemon));
                g_object_unref (application->daemon);
                application->daemon = NULL;
        }

        G_APPLICATION_CLASS (ev_daemon_application_parent_class)->dbus_unregister (gapplication,
                                                                                   connection,
                                                                                   object_path);
}

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static void ev_daemon_application_finalize ( GObject *  object)

static

Definition at line 429 of file ev-daemon.c.

{
        EvDaemonApplication *application = EV_DAEMON_APPLICATION (object);

        g_warn_if_fail (g_hash_table_size (application->pending_invocations) == 0);
        g_hash_table_destroy (application->pending_invocations);

        g_list_free_full (application->docs, (GDestroyNotify) ev_doc_free);

        G_OBJECT_CLASS (ev_daemon_application_parent_class)->finalize (object);
}

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static EvDoc* ev_daemon_application_find_doc ( EvDaemonApplication *  application, const gchar *  uri  )

static

Definition at line 94 of file ev-daemon.c.

{
    GList *l;

    for (l = application->docs; l != NULL; l = l->next) {
        EvDoc *doc = (EvDoc *)l->data;

        if (strcmp (doc->uri, uri) == 0)
            return doc;
    }

    return NULL;
}

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static GType ev_daemon_application_get_type ( void  )

static

static void ev_daemon_application_init ( EvDaemonApplication *  application)

static

Definition at line 420 of file ev-daemon.c.

{
        application->pending_invocations = g_hash_table_new_full (g_str_hash,
                                                                  g_str_equal,
                                                                  (GDestroyNotify) g_free,
                                                                  NULL);
}

static void ev_doc_free ( EvDoc *  doc)

static

Definition at line 80 of file ev-daemon.c.

{
    if (!doc)
        return;

    g_free (doc->dbus_name);
    g_free (doc->uri);

        g_bus_unwatch_name (doc->watch_id);

    g_free (doc);
}

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static gboolean handle_find_document_cb ( EvDaemon *  object, GDBusMethodInvocation *  invocation, const gchar *  uri, gboolean  spawn, EvDaemonApplication *  application  )

static

Definition at line 320 of file ev-daemon.c.

{
        EvDoc *doc;

        LOG ("FindDocument URI '%s'", uri);

        doc = ev_daemon_application_find_doc (application, uri);
        if (doc != NULL) {
                ev_daemon_complete_find_document (object, invocation, doc->dbus_name);

                return TRUE;
        }

        if (spawn) {
                GList *uri_invocations;
                gboolean ret_val = TRUE;

                uri_invocations = g_hash_table_lookup (application->pending_invocations, uri);

                if (uri_invocations == NULL) {
                        /* Only spawn once. */
                        ret_val = spawn_evince (uri);
                }

                if (ret_val) {
                        /* Only defer DBUS answer if evince was succesfully spawned */
                        uri_invocations = g_list_prepend (uri_invocations, invocation);
                        g_hash_table_insert (application->pending_invocations,
                                             g_strdup (uri),
                                             uri_invocations);
                        return TRUE;
                }
        }

        LOG ("FindDocument URI '%s' was not registered!", uri);
        // FIXME: shouldn't this return an error then?
        ev_daemon_complete_find_document (object, invocation, "");

        return TRUE;
}

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static gboolean handle_register_document_cb ( EvDaemon *  object, GDBusMethodInvocation *  invocation, const gchar *  uri, EvDaemonApplication *  application  )

static

Definition at line 218 of file ev-daemon.c.

{
        GDBusConnection *connection;
        const char *sender;
        EvDoc       *doc;

        doc = ev_daemon_application_find_doc (application, uri);
        if (doc != NULL) {
                LOG ("RegisterDocument found owner '%s' for URI '%s'", doc->dbus_name, uri);
                ev_daemon_complete_register_document (object, invocation, doc->dbus_name);

                return TRUE;
        }

        sender = g_dbus_method_invocation_get_sender (invocation);
        connection = g_dbus_method_invocation_get_connection (invocation);

        LOG ("RegisterDocument registered owner '%s' for URI '%s'", sender, uri);

        doc = g_new (EvDoc, 1);
        doc->dbus_name = g_strdup (sender);
        doc->uri = g_strdup (uri);

        application->docs = g_list_prepend (application->docs, doc);

        doc->loaded_id = g_dbus_connection_signal_subscribe (connection,
                                                             doc->dbus_name,
                                                             EV_DBUS_WINDOW_INTERFACE_NAME,
                                                             "DocumentLoaded",
                                                             NULL,
                                                             NULL,
                                                             0,
                                                             document_loaded_cb,
                                                             application, NULL);
        doc->watch_id = g_bus_watch_name_on_connection (connection,
                                                        sender,
                                                        G_BUS_NAME_WATCHER_FLAGS_NONE,
                                                        name_appeared_cb,
                                                        name_vanished_cb,
                                                        application, NULL);

        ev_daemon_complete_register_document (object, invocation, "");

        g_application_hold (G_APPLICATION (application));

        return TRUE;
}

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static gboolean handle_unregister_document_cb ( EvDaemon *  object, GDBusMethodInvocation *  invocation, const gchar *  uri, EvDaemonApplication *  application  )

static

Definition at line 270 of file ev-daemon.c.

{
        EvDoc *doc;
        const char *sender;

        LOG ("UnregisterDocument URI '%s'", uri);

        doc = ev_daemon_application_find_doc (application, uri);
        if (doc == NULL) {
                LOG ("UnregisterDocument URI was not registered!");
                g_dbus_method_invocation_return_error_literal (invocation,
                                                               G_DBUS_ERROR,
                                                               G_DBUS_ERROR_INVALID_ARGS,
                                                               "URI not registered");
                return TRUE;
        }

        sender = g_dbus_method_invocation_get_sender (invocation);
        if (strcmp (doc->dbus_name, sender) != 0) {
                LOG ("UnregisterDocument called by non-owner (owner '%s' sender '%s')",
                     doc->dbus_name, sender);

                g_dbus_method_invocation_return_error_literal (invocation,
                                                               G_DBUS_ERROR,
                                                               G_DBUS_ERROR_BAD_ADDRESS,
                                                               "Only owner can call this method");
                return TRUE;
        }

        application->docs = g_list_remove (application->docs, doc);

        if (doc->loaded_id != 0) {
                g_dbus_connection_signal_unsubscribe (g_dbus_method_invocation_get_connection (invocation),
                                                      doc->loaded_id);
                doc->loaded_id = 0;
        }

        ev_doc_free (doc);

        ev_daemon_complete_unregister_document (object, invocation);

        g_application_release (G_APPLICATION (application));

        return TRUE;
}

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gint main	(	gint	argc,
		gchar **	argv
	)

Definition at line 456 of file ev-daemon.c.

{
        GApplication *application;
        const GApplicationFlags flags = G_APPLICATION_IS_SERVICE;
        GError *error = NULL;
        int status;

        g_set_prgname ("evince-daemon");

        application = g_object_new (EV_TYPE_DAEMON_APPLICATION,
                                    "application-id", EV_DBUS_DAEMON_NAME,
                                    "flags", flags,
                                    NULL);
        g_application_set_inactivity_timeout (application, DAEMON_TIMEOUT);

        if (!g_application_register (application, NULL, &error)) {
                g_printerr ("Failed to register: %s\n", error->message);
                g_error_free (error);
                g_object_unref (application);

                return 1;
        }

        status = g_application_run (application, 0, NULL);
        g_object_unref (application);

    return status;
}

static void name_appeared_cb ( GDBusConnection *  connection, const gchar *  name, const gchar *  name_owner, gpointer  user_data  )

static

Definition at line 133 of file ev-daemon.c.

{
        LOG ("Watch name'%s' appeared with owner '%s'", name, name_owner);
}

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static void name_vanished_cb ( GDBusConnection *  connection, const gchar *  name, gpointer  user_data  )

static

Definition at line 142 of file ev-daemon.c.

{
        EvDaemonApplication *application = EV_DAEMON_APPLICATION (user_data);
    GList *l;

        LOG ("Watch name'%s' disappeared", name);

        for (l = application->docs; l != NULL; l = l->next) {
                EvDoc *doc = (EvDoc *) l->data;

                if (strcmp (doc->dbus_name, name) != 0)
                        continue;

                LOG ("Watch found URI '%s' for name; removing", doc->uri);

                application->docs = g_list_delete_link (application->docs, l);
                ev_doc_free (doc);

                g_application_release (G_APPLICATION (application));

                return;
        }
}

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static void process_pending_invocations ( EvDaemonApplication *  application, const gchar *  uri, const gchar *  dbus_name  )

static

Definition at line 169 of file ev-daemon.c.

{
    GList *l;
    GList *uri_invocations;

    LOG ("RegisterDocument process pending invocations for URI %s", uri);
    uri_invocations = g_hash_table_lookup (application->pending_invocations, uri);

    for (l = uri_invocations; l != NULL; l = l->next) {
        GDBusMethodInvocation *invocation;

        invocation = (GDBusMethodInvocation *)l->data;
        g_dbus_method_invocation_return_value (invocation,
                               g_variant_new ("(s)", dbus_name));
    }

    g_list_free (uri_invocations);
    g_hash_table_remove (application->pending_invocations, uri);
}

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static gboolean spawn_evince ( const gchar *  uri)

static

Definition at line 110 of file ev-daemon.c.

{
    gchar   *argv[3];
    gboolean retval;
    GError  *error = NULL;

    /* TODO Check that the uri exists */
    argv[0] = g_build_filename (BINDIR, "evince", NULL);
    argv[1] = (gchar *) uri;
    argv[2] = NULL;

    retval = g_spawn_async (NULL /* wd */, argv, NULL /* env */,
                0, NULL, NULL, NULL, &error);
    if (!retval) {
        g_printerr ("Error spawning evince for uri %s: %s\n", uri, error->message);
        g_error_free (error);
    }
    g_free (argv[0]);

    return retval;
}

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