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gtk2/modules/printbackends/cups/gtkcupssecretsutils.c
Andre Heinecke 382d68ff8e Use secrets service for cups auth_info 
When a printer requires auth_info (e.g. a printer connected
    over the samba protocol) it is now possible to save the
    credentials necessary for printing if a secrets service
    is available over dbus.
    The auth_info is then stored / loaded from the default
    collection of that secrets service.
    If no such service is available the user is not shown
    the option to remember the password and the behavior
    remains the same as before.

    https://bugzilla.gnome.org/show_bug.cgi?id=674264
2014-09-01 22:39:51 +02:00

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/* gtkcupssecretsutils.h: Helper to use a secrets service for printer passwords
* Copyright (C) 2014, Intevation GmbH
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glib.h>
#include <gio/gio.h>
#include <string.h>
#include <gtk/gtk.h>
#include "gtkcupssecretsutils.h"
#define SECRETS_BUS "org.freedesktop.secrets"
#define SECRETS_IFACE(interface) "org.freedesktop.Secret."interface
#define SECRETS_PATH "/org/freedesktop/secrets"
#define SECRETS_TIMEOUT 5000
typedef enum
{
SECRETS_SERVICE_ACTION_QUERY,
SECRETS_SERVICE_ACTION_STORE
} SecretsServiceAction;
typedef struct
{
GDBusConnection *dbus_connection;
SecretsServiceAction action;
gchar **auth_info,
**auth_info_labels,
**auth_info_required,
*printer_uri,
*session_path,
*collection_path;
GDBusProxy *item_proxy;
guint prompt_subscription;
} SecretsServiceData;
/**
* create_attributes:
* @printer_uri: URI for the printer
* @additional_labels: Optional labels for additional attributes
* @additional_attrs: Optional additional attributes
*
* Creates a GVariant dictionary with key / value pairs that
* can be used to identify a secret item.
*
* Returns: A GVariant dictionary of string pairs or NULL on error.
*/
static GVariant *
create_attributes (const gchar *printer_uri,
gchar **additional_attrs,
gchar **additional_labels)
{
GVariantBuilder *attr_builder = NULL;
GVariant *ret = NULL;
if (printer_uri == NULL)
{
GTK_NOTE (PRINTING,
g_print ("create_attributes called with invalid parameters.\n"));
return NULL;
}
attr_builder = g_variant_builder_new (G_VARIANT_TYPE_DICTIONARY);
/* The printer uri is the main identifying part */
g_variant_builder_add (attr_builder, "{ss}", "uri", printer_uri);
if (additional_labels != NULL)
{
int i;
for (i = 0; additional_labels[i] != NULL; i++)
{
g_variant_builder_add (attr_builder, "{ss}",
additional_labels[i],
additional_attrs[i]);
}
}
ret = g_variant_builder_end (attr_builder);
g_variant_builder_unref (attr_builder);
return ret;
}
static void
get_secret_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GVariant *output,
*attributes;
gchar **auth_info = NULL,
*key = NULL,
*value = NULL;
GVariantIter *iter = NULL;
guint i;
gint pw_field = -1;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_proxy_call_finish (G_DBUS_PROXY (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
attributes = g_dbus_proxy_get_cached_property (task_data->item_proxy,
"Attributes");
if (attributes == NULL)
{
GTK_NOTE (PRINTING, g_print ("Failed to lookup attributes.\n"));
g_variant_unref (output);
g_task_return_pointer (task, NULL, NULL);
return;
}
/* Iterate over the attributes to fill the auth info */
g_variant_get (attributes, "a{ss}", &iter);
auth_info = g_new0 (gchar *,
g_strv_length (task_data->auth_info_required) + 1);
while (g_variant_iter_loop (iter, "{ss}", &key, &value))
{
/* Match attributes with required auth info */
for (i = 0; task_data->auth_info_required[i] != NULL; i++)
{
if ((strcmp (key, "user") == 0 ||
strcmp (key, "username") == 0) &&
strcmp (task_data->auth_info_required[i],
"username") == 0)
{
auth_info[i] = g_strdup (value);
}
else if (strcmp (key, "domain") == 0 &&
strcmp (task_data->auth_info_required[i], "domain") == 0)
{
auth_info[i] = g_strdup (value);
}
else if ((strcmp (key, "hostname") == 0 ||
strcmp (key, "server") == 0 ) &&
strcmp (task_data->auth_info_required[i], "hostname") == 0)
{
auth_info[i] = g_strdup (value);
}
else if (strcmp (task_data->auth_info_required[i], "password") == 0)
{
pw_field = i;
}
}
}
if (pw_field == -1)
{
/* should not happen... */
GTK_NOTE (PRINTING, g_print ("No password required?.\n"));
g_variant_unref (output);
goto fail;
}
else
{
GVariant *secret,
*s_value;
gconstpointer ba_passwd = NULL;
gsize len = 0;
secret = g_variant_get_child_value (output, 0);
g_variant_unref (output);
if (secret == NULL || g_variant_n_children (secret) != 4)
{
GTK_NOTE (PRINTING, g_print ("Get secret response invalid.\n"));
if (secret != NULL)
g_variant_unref (secret);
goto fail;
}
s_value = g_variant_get_child_value (secret, 2);
ba_passwd = g_variant_get_fixed_array (s_value,
&len,
sizeof (guchar));
g_variant_unref (secret);
if (ba_passwd == NULL || strlen (ba_passwd) > len + 1)
{
/* No secret or the secret is not a zero terminated value */
GTK_NOTE (PRINTING, g_print ("Invalid secret.\n"));
g_variant_unref (s_value);
goto fail;
}
auth_info[pw_field] = g_strndup (ba_passwd, len);
g_variant_unref (s_value);
}
for (i = 0; task_data->auth_info_required[i] != NULL; i++)
{
if (auth_info[i] == NULL)
{
/* Error out if we did not find everything */
GTK_NOTE (PRINTING, g_print ("Failed to lookup required attribute: %s.\n",
task_data->auth_info_required[i]));
goto fail;
}
}
g_task_return_pointer (task, auth_info, NULL);
return;
fail:
/* Error out */
GTK_NOTE (PRINTING, g_print ("Failed to lookup secret.\n"));
for (i = 0; i < g_strv_length (task_data->auth_info_required); i++)
{
/* Not all fields of auth_info are neccessarily written so we can not
use strfreev here */
g_free (auth_info[i]);
}
g_free (auth_info);
g_task_return_pointer (task, NULL, NULL);
}
static void
create_item_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
GError *error = NULL;
GVariant *output;
gchar *item = NULL;
task = user_data;
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
g_variant_get (output, "(&o&o)", &item, NULL);
if (item != NULL && strlen (item) > 1)
{
GTK_NOTE (PRINTING, g_print ("Successfully stored auth info.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
g_variant_unref (output);
}
static void
do_store_auth_info (GTask *task)
{
GVariant *attributes = NULL,
*properties = NULL,
*secret = NULL;
gchar **additional_attrs = NULL,
**additional_labels = NULL,
*password = NULL;
SecretsServiceData *task_data = g_task_get_task_data (task);
guint i,
length,
additional_count = 0;
GVariantBuilder *prop_builder = NULL;
length = g_strv_length (task_data->auth_info_labels);
additional_attrs = g_new0 (gchar *, length + 1);
additional_labels = g_new0 (gchar *, length + 1);
/* The labels user and server are chosen to be compatible with
the attributes used by system-config-printer */
for (i = 0; task_data->auth_info_labels[i] != NULL; i++)
{
if (g_strcmp0 (task_data->auth_info_labels[i], "username") == 0)
{
additional_attrs[additional_count] = task_data->auth_info[i];
additional_labels[additional_count++] = "user";
}
else if (g_strcmp0 (task_data->auth_info_labels[i], "hostname") == 0)
{
additional_attrs[additional_count] = task_data->auth_info[i];
additional_labels[additional_count++] = "server";
}
else if (g_strcmp0 (task_data->auth_info_labels[i], "password") == 0)
{
password = task_data->auth_info[i];
}
}
attributes = create_attributes (task_data->printer_uri,
additional_attrs,
additional_labels);
g_free (additional_labels);
g_free (additional_attrs);
if (attributes == NULL)
{
GTK_NOTE (PRINTING, g_print ("Failed to create attributes.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
if (password == NULL)
{
GTK_NOTE (PRINTING, g_print ("No secret to store.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
prop_builder = g_variant_builder_new (G_VARIANT_TYPE_DICTIONARY);
g_variant_builder_add (prop_builder, "{sv}", SECRETS_IFACE ("Item.Label"),
g_variant_new_string (task_data->printer_uri));
g_variant_builder_add (prop_builder, "{sv}", SECRETS_IFACE ("Item.Attributes"),
attributes);
properties = g_variant_builder_end (prop_builder);
g_variant_builder_unref (prop_builder);
secret = g_variant_new ("(oay@ays)",
task_data->session_path,
NULL,
g_variant_new_bytestring (password),
"text/plain");
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
task_data->collection_path,
SECRETS_IFACE ("Collection"),
"CreateItem",
g_variant_new ("(@a{sv}@(oayays)b)",
properties,
secret,
TRUE),
G_VARIANT_TYPE ("(oo)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
create_item_cb,
task);
}
static void
prompt_completed_cb (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GVariant *dismissed;
gboolean is_dismissed = TRUE;
task = user_data;
task_data = g_task_get_task_data (task);
g_dbus_connection_signal_unsubscribe (task_data->dbus_connection,
task_data->prompt_subscription);
task_data->prompt_subscription = 0;
dismissed = g_variant_get_child_value (parameters, 0);
if (dismissed == NULL)
{
GTK_NOTE (PRINTING, g_print ("Invalid prompt signal.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
g_variant_get (dismissed, "b", &is_dismissed);
g_variant_unref (dismissed);
if (is_dismissed)
{
GTK_NOTE (PRINTING, g_print ("Collection unlock dismissed.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
/* Prompt successfull, proceed to get or store secret */
switch (task_data->action)
{
case SECRETS_SERVICE_ACTION_STORE:
do_store_auth_info (task);
break;
case SECRETS_SERVICE_ACTION_QUERY:
g_dbus_proxy_call (task_data->item_proxy,
"GetSecret",
g_variant_new ("(o)",
task_data->session_path),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
get_secret_cb,
task);
break;
}
}
static void
prompt_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GVariant *output;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
g_variant_unref (output);
/* Connect to the prompt's completed signal */
task_data->prompt_subscription =
g_dbus_connection_signal_subscribe (task_data->dbus_connection,
NULL,
SECRETS_IFACE ("Prompt"),
"Completed",
NULL,
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
prompt_completed_cb,
task,
NULL);
}
static void
unlock_collection_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GVariant *output;
const gchar *prompt_path;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
g_variant_get (output, "(@ao&o)", NULL, &prompt_path);
if (prompt_path != NULL && strlen (prompt_path) > 1)
{
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
prompt_path,
SECRETS_IFACE ("Prompt"),
"Prompt",
g_variant_new ("(s)", "0"),
G_VARIANT_TYPE ("()"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
prompt_cb,
task);
}
else
{
switch (task_data->action)
{
case SECRETS_SERVICE_ACTION_STORE:
do_store_auth_info (task);
break;
case SECRETS_SERVICE_ACTION_QUERY:
/* Prompt successfull proceed to get secret */
g_dbus_proxy_call (task_data->item_proxy,
"GetSecret",
g_variant_new ("(o)",
task_data->session_path),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
get_secret_cb,
task);
break;
}
}
g_variant_unref (output);
}
static void
unlock_read_alias_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GVariant *output,
*subresult;
gsize path_len = 0;
const gchar *collection_path;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
subresult = g_variant_get_child_value (output, 0);
g_variant_unref (output);
if (subresult == NULL)
{
GTK_NOTE (PRINTING, g_print ("Invalid ReadAlias response.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
collection_path = g_variant_get_string (subresult, &path_len);
const gchar * const to_unlock[] =
{
collection_path, NULL
};
task_data->collection_path = g_strdup (collection_path);
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
SECRETS_PATH,
SECRETS_IFACE ("Service"),
"Unlock",
g_variant_new ("(^ao)", to_unlock),
G_VARIANT_TYPE ("(aoo)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
unlock_collection_cb,
task);
g_variant_unref (subresult);
}
static void
item_proxy_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GDBusProxy *item_proxy;
GVariant *locked;
gboolean is_locked;
task = user_data;
task_data = g_task_get_task_data (task);
item_proxy = g_dbus_proxy_new_finish (res,
&error);
if (item_proxy == NULL)
{
g_task_return_error (task, error);
return;
}
task_data->item_proxy = item_proxy;
locked = g_dbus_proxy_get_cached_property (item_proxy, "Locked");
if (locked == NULL)
{
GTK_NOTE (PRINTING, g_print ("Failed to look up \"Locked\" property on item.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
g_variant_get (locked, "b", &is_locked);
g_variant_unref (locked);
if (is_locked)
{
/* Go down the unlock -> lookup path */
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
SECRETS_PATH,
SECRETS_IFACE ("Service"),
"ReadAlias",
g_variant_new ("(s)", "default"),
G_VARIANT_TYPE ("(o)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
unlock_read_alias_cb,
task);
return;
}
/* Unlocked proceed to get or store secret */
switch (task_data->action)
{
case SECRETS_SERVICE_ACTION_STORE:
do_store_auth_info (task);
break;
case SECRETS_SERVICE_ACTION_QUERY:
g_dbus_proxy_call (item_proxy,
"GetSecret",
g_variant_new ("(o)",
task_data->session_path),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
get_secret_cb,
task);
break;
}
}
static void
search_items_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
GVariant *output;
gsize array_cnt,
i;
gboolean found_item = FALSE;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
array_cnt = g_variant_n_children (output);
for (i = 0; i < array_cnt; i++)
{
GVariant * const item_paths = g_variant_get_child_value (output, i);
const gchar **items = NULL;
if (item_paths == NULL)
{
GTK_NOTE (PRINTING,
g_print ("SearchItems returned invalid result.\n"));
continue;
}
items = g_variant_get_objv (item_paths, NULL);
if (*items == NULL)
{
g_variant_unref (item_paths);
g_free ((gpointer) items);
continue;
}
/* Access the first found item. */
found_item = TRUE;
g_dbus_proxy_new (task_data->dbus_connection,
G_DBUS_PROXY_FLAGS_NONE,
NULL,
SECRETS_BUS,
*items,
SECRETS_IFACE ("Item"),
g_task_get_cancellable (task),
item_proxy_cb,
task);
g_free ((gpointer) items);
g_variant_unref (item_paths);
break;
}
g_variant_unref (output);
if (!found_item)
{
GTK_NOTE (PRINTING, g_print ("No match found in secrets service.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
}
static void
open_session_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
GVariant *output,
*session_variant;
SecretsServiceData *task_data;
GError *error = NULL;
task = user_data;
task_data = g_task_get_task_data (task);
output = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object),
res,
&error);
if (output == NULL)
{
g_task_return_error (task, error);
return;
}
session_variant = g_variant_get_child_value (output, 1);
if (session_variant == NULL)
{
GTK_NOTE (PRINTING, g_print ("Invalid session path response.\n"));
g_variant_unref (output);
g_task_return_pointer (task, NULL, NULL);
return;
}
task_data->session_path = g_variant_dup_string (session_variant, NULL);
if (task_data->session_path == NULL)
{
GTK_NOTE (PRINTING, g_print ("Invalid session path string value.\n"));
g_variant_unref (session_variant);
g_variant_unref (output);
g_task_return_pointer (task, NULL, NULL);
return;
}
g_variant_unref (session_variant);
g_variant_unref (output);
switch (task_data->action)
{
case SECRETS_SERVICE_ACTION_QUERY:
{
/* Search for the secret item */
GVariant *secrets_attrs;
secrets_attrs = create_attributes (task_data->printer_uri, NULL, NULL);
if (secrets_attrs == NULL)
{
GTK_NOTE (PRINTING, g_print ("Failed to create attributes.\n"));
g_task_return_pointer (task, NULL, NULL);
return;
}
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
SECRETS_PATH,
SECRETS_IFACE ("Service"),
"SearchItems",
g_variant_new ("(@a{ss})", secrets_attrs),
G_VARIANT_TYPE ("(aoao)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
search_items_cb,
task);
break;
}
case SECRETS_SERVICE_ACTION_STORE:
{
/* Look up / unlock the default collection for storing */
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
SECRETS_PATH,
SECRETS_IFACE ("Service"),
"ReadAlias",
g_variant_new ("(s)", "default"),
G_VARIANT_TYPE ("(o)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
unlock_read_alias_cb,
task);
break;
}
}
}
static void
get_connection_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task;
SecretsServiceData *task_data;
GError *error = NULL;
task = user_data;
task_data = g_task_get_task_data (task);
task_data->dbus_connection = g_bus_get_finish (res, &error);
if (task_data->dbus_connection == NULL)
{
g_task_return_error (task, error);
return;
}
/* Now open a session */
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
SECRETS_PATH,
SECRETS_IFACE ("Service"),
"OpenSession",
g_variant_new ("(sv)", "plain",
g_variant_new_string ("")),
G_VARIANT_TYPE ("(vo)"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
g_task_get_cancellable (task),
open_session_cb,
task);
}
/**
* gtk_cups_secrets_service_watch:
* @appeared: The callback to call when the service interface appears
* @vanished: The callback to call when the service interface vanishes
* @user_data: A reference to the watching printbackend
*
* Registers a watch for the secrets service interface.
*
* Returns: The watcher id
*/
guint
gtk_cups_secrets_service_watch (GBusNameAppearedCallback appeared,
GBusNameVanishedCallback vanished,
gpointer user_data)
{
return g_bus_watch_name (G_BUS_TYPE_SESSION,
SECRETS_BUS,
G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
appeared,
vanished,
user_data,
NULL);
}
void
cleanup_task_data (gpointer data)
{
gint i;
SecretsServiceData *task_data = data;
g_free (task_data->collection_path);
g_strfreev (task_data->auth_info_labels);
g_strfreev (task_data->auth_info_required);
g_free (task_data->printer_uri);
if (task_data->auth_info != NULL)
{
for (i = 0; task_data->auth_info[i] != NULL; i++)
{
memset (task_data->auth_info[i], 0, strlen (task_data->auth_info[i]));
g_clear_pointer (&task_data->auth_info[i], g_free);
}
g_clear_pointer (&task_data->auth_info, g_free);
}
if (task_data->prompt_subscription != 0)
{
g_dbus_connection_signal_unsubscribe (task_data->dbus_connection,
task_data->prompt_subscription);
task_data->prompt_subscription = 0;
}
if (task_data->session_path != NULL)
{
g_dbus_connection_call (task_data->dbus_connection,
SECRETS_BUS,
task_data->session_path,
SECRETS_IFACE ("Session"),
"Close",
NULL,
G_VARIANT_TYPE ("()"),
G_DBUS_CALL_FLAGS_NONE,
SECRETS_TIMEOUT,
NULL,
NULL,
NULL);
}
g_clear_object (&task_data->dbus_connection);
g_clear_pointer (&task_data->session_path, g_free);
g_clear_object (&task_data->item_proxy);
}
/**
* gtk_cups_secrets_service_query_task:
* @source_object: Source object for this task
* @cancellable: Cancellable to cancel this task
* @callback: Callback to call once the query is finished
* @user_data: The user_data passed to the callback
* @printer_uri: URI of the printer
* @auth_info_required: Info required for authentication
*
* Checks if a secrets service as described by the secrets-service standard
* is available and if so it tries to find the authentication info in the
* default collection of the service.
*
* This is the entry point to a chain of async calls to open a session,
* search the secret, unlock the collection (if necessary) and finally
* to lookup the secret.
*
* See: http://standards.freedesktop.org/secret-service/ for documentation
* of the used API.
*/
void
gtk_cups_secrets_service_query_task (gpointer source_object,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data,
const gchar *printer_uri,
gchar **auth_info_required)
{
GTask *task;
SecretsServiceData *task_data;
task_data = g_new0 (SecretsServiceData, 1);
task_data->action = SECRETS_SERVICE_ACTION_QUERY;
task_data->printer_uri = g_strdup (printer_uri);
task_data->auth_info_required = g_strdupv (auth_info_required);
task = g_task_new (source_object, cancellable, callback, user_data);
g_task_set_task_data (task, task_data, cleanup_task_data);
g_bus_get (G_BUS_TYPE_SESSION, cancellable,
get_connection_cb, task);
}
static void
store_done_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task = (GTask *) res;
GError *error = NULL;
g_task_propagate_pointer (task, &error);
if (error != NULL)
{
GTK_NOTE (PRINTING,
g_print ("Failed to store auth info: %s\n", error->message));
g_error_free (error);
}
g_object_unref (task);
GTK_NOTE (PRINTING,
g_print ("gtk_cups_secrets_service_store finished.\n"));
}
/**
* gtk_cups_secrets_service_store:
* @auth_info: Auth info that should be stored
* @auth_info_labels: The keys to use for the auth info
* @printer_uri: URI of the printer
*
* Tries to store the auth_info in a secrets service.
*/
void
gtk_cups_secrets_service_store (gchar **auth_info,
gchar **auth_info_labels,
const gchar *printer_uri)
{
GTask *task;
SecretsServiceData *task_data;
if (auth_info == NULL || auth_info_labels == NULL || printer_uri == NULL)
{
GTK_NOTE (PRINTING,
g_print ("Invalid call to gtk_cups_secrets_service_store.\n"));
return;
}
task_data = g_new0 (SecretsServiceData, 1);
task_data->action = SECRETS_SERVICE_ACTION_STORE;
task_data->printer_uri = g_strdup (printer_uri);
task_data->auth_info = g_strdupv (auth_info);
task_data->auth_info_labels = g_strdupv (auth_info_labels);
task = g_task_new (NULL, NULL, store_done_cb, NULL);
g_task_set_task_data (task, task_data, cleanup_task_data);
g_bus_get (G_BUS_TYPE_SESSION, NULL,
get_connection_cb, task);
}
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