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printers: Add PpMaintenanceCommand object for execution of commands

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PpMaintenanceCommand object contains asynchronous method which executes
given CUPS maintenance command (e.g. "AutoConfigure"). (#683229)
This commit is contained in:
Marek Kasik 2012-09-03 20:18:47 +02:00
parent 142d2c65b4
commit 1532d7ef1a
3 changed files with 396 additions and 0 deletions
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2
panels/printers/Makefile.am
View file

@ -22,6 +22,8 @@ ccpanels_LTLIBRARIES = libprinters.la
libprinters_la_SOURCES = \
printers-module.c \
pp-maintenance-command.c \
pp-maintenance-command.h \
pp-host.c \
pp-host.h \
pp-cups.c \

325
panels/printers/pp-maintenance-command.c Normal file
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@ -0,0 +1,325 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright 2012 Red Hat, Inc,
*
* 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
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Author: Marek Kasik <mkasik@redhat.com>
*/
#include <glib/gstdio.h>
#include "pp-maintenance-command.h"
#include "pp-utils.h"
#ifndef HAVE_CUPS_1_6
#define ippGetCount(attr) attr->num_values
#define ippGetValueTag(attr) attr->value_tag
#define ippGetStatusCode(ipp) ipp->request.status.status_code
#define ippGetString(attr, element, language) attr->values[element].string.text
#endif
struct _PpMaintenanceCommandPrivate
{
gchar *printer_name;
gchar *command;
gchar *title;
};
G_DEFINE_TYPE (PpMaintenanceCommand, pp_maintenance_command, G_TYPE_OBJECT);
enum {
PROP_0 = 0,
PROP_PRINTER_NAME,
PROP_COMMAND,
PROP_TITLE
};
static void
pp_maintenance_command_finalize (GObject *object)
{
PpMaintenanceCommandPrivate *priv;
priv = PP_MAINTENANCE_COMMAND (object)->priv;
g_clear_pointer (&priv->printer_name, g_free);
g_clear_pointer (&priv->command, g_free);
g_clear_pointer (&priv->title, g_free);
G_OBJECT_CLASS (pp_maintenance_command_parent_class)->finalize (object);
}
static void
pp_maintenance_command_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *param_spec)
{
PpMaintenanceCommand *self;
self = PP_MAINTENANCE_COMMAND (object);
switch (prop_id)
{
case PROP_PRINTER_NAME:
g_value_set_string (value, self->priv->printer_name);
break;
case PROP_COMMAND:
g_value_set_string (value, self->priv->command);
break;
case PROP_TITLE:
g_value_set_string (value, self->priv->title);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
prop_id,
param_spec);
break;
}
}
static void
pp_maintenance_command_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *param_spec)
{
PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (object);
switch (prop_id)
{
case PROP_PRINTER_NAME:
g_free (self->priv->printer_name);
self->priv->printer_name = g_value_dup_string (value);
break;
case PROP_COMMAND:
g_free (self->priv->command);
self->priv->command = g_value_dup_string (value);
break;
case PROP_TITLE:
g_free (self->priv->title);
self->priv->title = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
prop_id,
param_spec);
break;
}
}
static void
pp_maintenance_command_class_init (PpMaintenanceCommandClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (PpMaintenanceCommandPrivate));
gobject_class->set_property = pp_maintenance_command_set_property;
gobject_class->get_property = pp_maintenance_command_get_property;
gobject_class->finalize = pp_maintenance_command_finalize;
g_object_class_install_property (gobject_class, PROP_PRINTER_NAME,
g_param_spec_string ("printer-name",
"Printer name",
"Name of the printer",
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_COMMAND,
g_param_spec_string ("command",
"Maintenance command",
"Command to execute",
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_TITLE,
g_param_spec_string ("title",
"Command title",
"Title of the job by which the command will be executed",
NULL,
G_PARAM_READWRITE));
}
static void
pp_maintenance_command_init (PpMaintenanceCommand *command)
{
command->priv = G_TYPE_INSTANCE_GET_PRIVATE (command,
PP_TYPE_MAINTENANCE_COMMAND,
PpMaintenanceCommandPrivate);
}
PpMaintenanceCommand *
pp_maintenance_command_new (const gchar *printer_name,
const gchar *command,
const gchar *title)
{
return g_object_new (PP_TYPE_MAINTENANCE_COMMAND,
"printer-name", printer_name,
"command", command,
"title", title,
NULL);
}
static void
_pp_maintenance_command_execute_thread (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
PpMaintenanceCommand *command = (PpMaintenanceCommand *) object;
PpMaintenanceCommandPrivate *priv = command->priv;
static const char *attrs[] = {"printer-commands"};
ipp_attribute_t *attr = NULL;
gboolean success = FALSE;
GError *error = NULL;
ipp_t *request;
ipp_t *response = NULL;
gchar *printer_uri;
gchar *printer_commands = NULL;
gchar *printer_commands_lowercase = NULL;
gchar *command_lowercase;
gchar *file_name = NULL;
int fd = -1;
printer_uri = g_strdup_printf ("ipp://localhost/printers/%s",
priv->printer_name);
request = ippNewRequest (IPP_GET_PRINTER_ATTRIBUTES);
ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, printer_uri);
ippAddStrings (request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
"requested-attributes", 1, NULL, attrs);
response = cupsDoRequest (CUPS_HTTP_DEFAULT, request, "/");
if (response)
{
if (ippGetStatusCode (response) <= IPP_OK_CONFLICT)
{
attr = ippFindAttribute (response, "printer-commands", IPP_TAG_ZERO);
if (attr && ippGetCount (attr) > 0 && ippGetValueTag (attr) != IPP_TAG_NOVALUE)
{
if (ippGetValueTag (attr) == IPP_TAG_KEYWORD)
{
printer_commands = g_strdup (ippGetString (attr, 0, NULL));
}
}
else
{
success = TRUE;
}
}
ippDelete (response);
}
if (printer_commands)
{
command_lowercase = g_ascii_strdown (priv->command, -1);
printer_commands_lowercase = g_ascii_strdown (printer_commands, -1);
if (g_strrstr (printer_commands_lowercase, command_lowercase))
{
request = ippNewRequest (IPP_PRINT_JOB);
ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, printer_uri);
ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_NAME,
"job-name", NULL, priv->title);
ippAddString (request, IPP_TAG_JOB, IPP_TAG_MIMETYPE,
"document-format", NULL, "application/vnd.cups-command");
fd = g_file_open_tmp ("ccXXXXXX", &file_name, &error);
if (fd != -1)
{
FILE *file;
file = fdopen (fd, "w");
fprintf (file, "#CUPS-COMMAND\n");
fprintf (file, "%s\n", priv->command);
fclose (file);
response = cupsDoFileRequest (CUPS_HTTP_DEFAULT, request, "/", file_name);
g_unlink (file_name);
if (response)
{
if (ippGetStatusCode (response) <= IPP_OK_CONFLICT)
{
success = TRUE;
}
ippDelete (response);
}
}
g_free (file_name);
}
else
{
success = TRUE;
}
g_free (command_lowercase);
g_free (printer_commands_lowercase);
g_free (printer_commands);
}
g_free (printer_uri);
if (!success)
{
g_simple_async_result_set_error (res,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"Execution of maintenance command failed.");
}
g_simple_async_result_set_op_res_gboolean (res, success);
}
void
pp_maintenance_command_execute_async (PpMaintenanceCommand *command,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GSimpleAsyncResult *res;
res = g_simple_async_result_new (G_OBJECT (command), callback, user_data, pp_maintenance_command_execute_async);
g_simple_async_result_set_check_cancellable (res, cancellable);
g_simple_async_result_run_in_thread (res, _pp_maintenance_command_execute_thread, 0, cancellable);
g_object_unref (res);
}
gboolean
pp_maintenance_command_execute_finish (PpMaintenanceCommand *command,
GAsyncResult *res,
GError **error)
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == pp_maintenance_command_execute_async);
if (g_simple_async_result_propagate_error (simple, error))
{
return FALSE;
}
return g_simple_async_result_get_op_res_gboolean (simple);
}

69
panels/printers/pp-maintenance-command.h Normal file
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@ -0,0 +1,69 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright 2012 Red Hat, Inc,
*
* 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
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Author: Marek Kasik <mkasik@redhat.com>
*/
#ifndef __PP_MAINTENANCE_COMMAND_H__
#define __PP_MAINTENANCE_COMMAND_H__
#include <glib-object.h>
#include <gio/gio.h>
G_BEGIN_DECLS
#define PP_TYPE_MAINTENANCE_COMMAND (pp_maintenance_command_get_type ())
#define PP_MAINTENANCE_COMMAND(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), PP_TYPE_MAINTENANCE_COMMAND, PpMaintenanceCommand))
#define PP_MAINTENANCE_COMMAND_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), PP_TYPE_MAINTENANCE_COMMAND, PpMaintenanceCommandClass))
#define PP_IS_MAINTENANCE_COMMAND(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), PP_TYPE_MAINTENANCE_COMMAND))
#define PP_IS_MAINTENANCE_COMMAND_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), PP_TYPE_MAINTENANCE_COMMAND))
#define PP_MAINTENANCE_COMMAND_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), PP_TYPE_MAINTENANCE_COMMAND, PpMaintenanceCommandClass))
typedef struct _PpMaintenanceCommand PpMaintenanceCommand;
typedef struct _PpMaintenanceCommandClass PpMaintenanceCommandClass;
typedef struct _PpMaintenanceCommandPrivate PpMaintenanceCommandPrivate;
struct _PpMaintenanceCommand
{
GObject parent_instance;
PpMaintenanceCommandPrivate *priv;
};
struct _PpMaintenanceCommandClass
{
GObjectClass parent_class;
};
GType pp_maintenance_command_get_type (void) G_GNUC_CONST;
PpMaintenanceCommand *pp_maintenance_command_new (const gchar *printer_name,
const gchar *command,
const gchar *title);
void pp_maintenance_command_execute_async (PpMaintenanceCommand *command,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
gboolean pp_maintenance_command_execute_finish (PpMaintenanceCommand *command,
GAsyncResult *result,
GError **error);
G_END_DECLS
#endif /* __PP_MAINTENANCE_COMMAND_H__ */