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fprintd: Use GDBus codegen based implementation

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Fprintd is dependent on the deprecated dbus-glib, also this doesn't provide
various features we can take advantage of, like the ones for async
authentication mechanism.

So, remove all the dbus-glib dependencies and simplify the code, but without
any further refactor, and keeping everything as it used to work, while this
will give room for further improvements in subsequent commits.

Internally, we just use dbus-codegen to generate the skeletons, and we
use the generated FprintdDBusManager with composition, while we
implement the device skeleton interface in FprintDevice, so that we
don't have to use it as a proxy, and keep being closer to what it used
to be with dbus-glib.

Fixes: #61
This commit is contained in:
Marco Trevisan (Treviño)
2020-02-03 20:29:56 +01:00
committed by Benjamin Berg
parent e224913b80
commit 93bad82540
15 changed files with 750 additions and 588 deletions
Download Patch File Download Diff File Expand all files Collapse all files

88
utils/enroll.c
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@ -1,6 +1,7 @@
/*
* fprintd example to enroll right index finger
* Copyright (C) 2008 Daniel Drake <dsd@gentoo.org>
* Copyright (C) 2020 Marco Trevisan <marco.trevisan@canonical.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -21,17 +22,14 @@
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <dbus/dbus-glib-bindings.h>
#include "manager-dbus-glue.h"
#include "device-dbus-glue.h"
#include "fprintd-marshal.h"
#include "fprintd-dbus.h"
#define N_(x) x
#define TR(x) x
#include "fingerprint-strings.h"
static DBusGProxy *manager = NULL;
static DBusGConnection *connection = NULL;
static FprintDBusManager *manager = NULL;
static GDBusConnection *connection = NULL;
static char *finger_name = NULL;
static char **usernames = NULL;
@ -39,41 +37,54 @@ static void create_manager(void)
{
GError *error = NULL;
connection = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
if (connection == NULL) {
g_print("Failed to connect to session bus: %s\n", error->message);
exit (1);
}
manager = dbus_g_proxy_new_for_name(connection,
"net.reactivated.Fprint", "/net/reactivated/Fprint/Manager",
"net.reactivated.Fprint.Manager");
manager = fprint_dbus_manager_proxy_new_sync (connection,
G_DBUS_PROXY_FLAGS_NONE,
"net.reactivated.Fprint",
"/net/reactivated/Fprint/Manager",
NULL, &error);
if (manager == NULL) {
g_print ("Failed to get Fprintd manager: %s\n", error->message);
exit (1);
}
}
static DBusGProxy *open_device(const char *username)
static FprintDBusDevice *open_device (const char *username)
{
g_autoptr(FprintDBusDevice) dev = NULL;
GError *error = NULL;
gchar *path;
DBusGProxy *dev;
if (!net_reactivated_Fprint_Manager_get_default_device(manager, &path, &error)) {
if (!fprint_dbus_manager_call_get_default_device_sync (manager, &path,
NULL, &error)) {
g_print("Impossible to enroll: %s\n", error->message);
exit (1);
}
g_print("Using device %s\n", path);
/* FIXME use for_name_owner?? */
dev = dbus_g_proxy_new_for_name(connection, "net.reactivated.Fprint",
path, "net.reactivated.Fprint.Device");
dev = fprint_dbus_device_proxy_new_sync (connection,
G_DBUS_PROXY_FLAGS_NONE,
"net.reactivated.Fprint",
path, NULL, &error);
g_free (path);
if (!net_reactivated_Fprint_Device_claim(dev, username, &error)) {
if (error) {
g_print ("failed to connect to device: %s\n", error->message);
exit (1);
}
if (!fprint_dbus_device_call_claim_sync (dev, username, NULL, &error)) {
g_print("failed to claim device: %s\n", error->message);
exit (1);
}
return dev;
return g_steal_pointer (&dev);
}
static void enroll_result(GObject *object, const char *result, gboolean done, void *user_data)
@ -84,16 +95,30 @@ static void enroll_result(GObject *object, const char *result, gboolean done, vo
*enroll_completed = TRUE;
}
static void do_enroll(DBusGProxy *dev)
static void proxy_signal_cb (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
if (g_str_equal (signal_name, "EnrollStatus")) {
const gchar *result;
gboolean done;
g_variant_get (parameters, "(&sb)", &result, &done);
enroll_result (G_OBJECT (proxy), result, done, user_data);
}
}
static void do_enroll (FprintDBusDevice *dev)
{
GError *error = NULL;
gboolean enroll_completed = FALSE;
gboolean found;
guint i;
dbus_g_proxy_add_signal(dev, "EnrollStatus", G_TYPE_STRING, G_TYPE_BOOLEAN, NULL);
dbus_g_proxy_connect_signal(dev, "EnrollStatus", G_CALLBACK(enroll_result),
&enroll_completed, NULL);
g_signal_connect (dev, "g-signal", G_CALLBACK (proxy_signal_cb),
&enroll_completed);
found = FALSE;
for (i = 0; fingers[i].dbus_name != NULL; i++) {
@ -118,7 +143,8 @@ static void do_enroll(DBusGProxy *dev)
}
g_print("Enrolling %s finger.\n", finger_name);
if (!net_reactivated_Fprint_Device_enroll_start(dev, finger_name, &error)) {
if (!fprint_dbus_device_call_enroll_start_sync (dev, finger_name, NULL,
&error)) {
g_print("EnrollStart failed: %s\n", error->message);
exit (1);
}
@ -126,19 +152,18 @@ static void do_enroll(DBusGProxy *dev)
while (!enroll_completed)
g_main_context_iteration(NULL, TRUE);
dbus_g_proxy_disconnect_signal(dev, "EnrollStatus",
G_CALLBACK(enroll_result), &enroll_completed);
g_signal_handlers_disconnect_by_func (dev, proxy_signal_cb, &enroll_result);
if (!net_reactivated_Fprint_Device_enroll_stop(dev, &error)) {
if (!fprint_dbus_device_call_enroll_stop_sync (dev, NULL, &error)) {
g_print("VerifyStop failed: %s\n", error->message);
exit(1);
}
}
static void release_device(DBusGProxy *dev)
static void release_device (FprintDBusDevice *dev)
{
GError *error = NULL;
if (!net_reactivated_Fprint_Device_release(dev, &error)) {
if (!fprint_dbus_device_call_release_sync (dev, NULL, &error)) {
g_print("ReleaseDevice failed: %s\n", error->message);
exit (1);
}
@ -152,15 +177,12 @@ static const GOptionEntry entries[] = {
int main(int argc, char **argv)
{
g_autoptr(FprintDBusDevice) dev = NULL;
GOptionContext *context;
GError *err = NULL;
DBusGProxy *dev;
setlocale (LC_ALL, "");
dbus_g_object_register_marshaller (fprintd_marshal_VOID__STRING_BOOLEAN,
G_TYPE_NONE, G_TYPE_STRING, G_TYPE_BOOLEAN, G_TYPE_INVALID);
context = g_option_context_new ("Enroll a fingerprint");
g_option_context_add_main_entries (context, entries, NULL);
@ -175,7 +197,7 @@ int main(int argc, char **argv)
create_manager();
dev = open_device(usernames ? usernames[0] : NULL);
dev = open_device (usernames ? usernames[0] : "");
do_enroll(dev);
release_device(dev);
g_free(finger_name);