390 lines
13 KiB
C
390 lines
13 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
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*
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* Copyright 2012 Red Hat, Inc,
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Marek Kasik <mkasik@redhat.com>
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*/
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#include <glib/gstdio.h>
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#include "pp-maintenance-command.h"
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#include "pp-utils.h"
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#if (CUPS_VERSION_MAJOR > 1) || (CUPS_VERSION_MINOR > 5)
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#define HAVE_CUPS_1_6 1
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#endif
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#ifndef HAVE_CUPS_1_6
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#define ippGetCount(attr) attr->num_values
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#define ippGetValueTag(attr) attr->value_tag
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#define ippGetStatusCode(ipp) ipp->request.status.status_code
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#define ippGetString(attr, element, language) attr->values[element].string.text
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#endif
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struct _PpMaintenanceCommand
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{
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GObject parent_instance;
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gchar *printer_name;
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gchar *command;
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gchar *parameters;
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gchar *title;
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};
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G_DEFINE_TYPE (PpMaintenanceCommand, pp_maintenance_command, G_TYPE_OBJECT);
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enum {
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PROP_0 = 0,
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PROP_PRINTER_NAME,
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PROP_COMMAND,
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PROP_PARAMETERS,
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PROP_TITLE
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};
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static void
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pp_maintenance_command_finalize (GObject *object)
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{
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PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (object);
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g_clear_pointer (&self->printer_name, g_free);
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g_clear_pointer (&self->command, g_free);
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g_clear_pointer (&self->parameters, g_free);
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g_clear_pointer (&self->title, g_free);
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G_OBJECT_CLASS (pp_maintenance_command_parent_class)->finalize (object);
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}
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static void
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pp_maintenance_command_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *param_spec)
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{
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PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (object);
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switch (prop_id)
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{
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case PROP_PRINTER_NAME:
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g_value_set_string (value, self->printer_name);
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break;
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case PROP_COMMAND:
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g_value_set_string (value, self->command);
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break;
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case PROP_PARAMETERS:
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g_value_set_string (value, self->parameters);
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break;
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case PROP_TITLE:
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g_value_set_string (value, self->title);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
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prop_id,
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param_spec);
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break;
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}
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}
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static void
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pp_maintenance_command_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *param_spec)
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{
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PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (object);
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switch (prop_id)
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{
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case PROP_PRINTER_NAME:
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g_free (self->printer_name);
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self->printer_name = g_value_dup_string (value);
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break;
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case PROP_COMMAND:
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g_free (self->command);
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self->command = g_value_dup_string (value);
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break;
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case PROP_PARAMETERS:
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g_free (self->parameters);
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self->parameters = g_value_dup_string (value);
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break;
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case PROP_TITLE:
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g_free (self->title);
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self->title = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
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prop_id,
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param_spec);
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break;
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}
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}
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static void
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pp_maintenance_command_class_init (PpMaintenanceCommandClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = pp_maintenance_command_set_property;
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gobject_class->get_property = pp_maintenance_command_get_property;
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gobject_class->finalize = pp_maintenance_command_finalize;
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g_object_class_install_property (gobject_class, PROP_PRINTER_NAME,
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g_param_spec_string ("printer-name",
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"Printer name",
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"Name of the printer",
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NULL,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_COMMAND,
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g_param_spec_string ("command",
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"Maintenance command",
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"Command to execute",
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NULL,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_PARAMETERS,
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g_param_spec_string ("parameters",
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"Optional parameters",
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"Optional parameters for the maintenance command",
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NULL,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_TITLE,
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g_param_spec_string ("title",
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"Command title",
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"Title of the job by which the command will be executed",
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NULL,
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G_PARAM_READWRITE));
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}
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static void
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pp_maintenance_command_init (PpMaintenanceCommand *self)
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{
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}
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PpMaintenanceCommand *
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pp_maintenance_command_new (const gchar *printer_name,
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const gchar *command,
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const gchar *parameters,
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const gchar *title)
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{
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return g_object_new (PP_TYPE_MAINTENANCE_COMMAND,
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"printer-name", printer_name,
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"command", command,
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"parameters", parameters,
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"title", title,
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NULL);
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}
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static gboolean _pp_maintenance_command_is_supported (const gchar *printer_name,
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const gchar *command);
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static void
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_pp_maintenance_command_execute_thread (GTask *task,
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gpointer source_object,
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gpointer task_data,
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GCancellable *cancellable)
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{
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PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (source_object);
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gboolean success = FALSE;
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GError *error = NULL;
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if (_pp_maintenance_command_is_supported (self->printer_name, self->command))
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{
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ipp_t *request;
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ipp_t *response = NULL;
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g_autofree gchar *printer_uri = NULL;
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g_autofree gchar *file_name = NULL;
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int fd = -1;
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printer_uri = g_strdup_printf ("ipp://localhost/printers/%s",
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self->printer_name);
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request = ippNewRequest (IPP_PRINT_JOB);
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ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_URI,
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"printer-uri", NULL, printer_uri);
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ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_NAME,
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"job-name", NULL, self->title);
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ippAddString (request, IPP_TAG_JOB, IPP_TAG_MIMETYPE,
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"document-format", NULL, "application/vnd.cups-command");
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fd = g_file_open_tmp ("ccXXXXXX", &file_name, &error);
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if (fd != -1)
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{
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FILE *file;
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file = fdopen (fd, "w");
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fprintf (file, "#CUPS-COMMAND\n");
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fprintf (file, "%s", self->command);
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if (self->parameters)
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fprintf (file, " %s", self->parameters);
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fprintf (file, "\n");
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fclose (file);
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response = cupsDoFileRequest (CUPS_HTTP_DEFAULT, request, "/", file_name);
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g_unlink (file_name);
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if (response != NULL)
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{
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if (ippGetStatusCode (response) <= IPP_OK_CONFLICT)
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{
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success = TRUE;
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}
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ippDelete (response);
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}
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}
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}
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else
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{
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success = TRUE;
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}
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if (!success)
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{
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g_task_return_new_error (task,
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G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Execution of maintenance command failed.");
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}
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g_task_return_boolean (task, success);
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}
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void
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pp_maintenance_command_execute_async (PpMaintenanceCommand *self,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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g_autoptr(GTask) task = NULL;
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task = g_task_new (self, cancellable, callback, user_data);
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g_task_set_check_cancellable (task, TRUE);
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g_task_run_in_thread (task, _pp_maintenance_command_execute_thread);
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}
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gboolean
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pp_maintenance_command_execute_finish (PpMaintenanceCommand *self,
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GAsyncResult *result,
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GError **error)
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{
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g_return_val_if_fail (g_task_is_valid (result, self), FALSE);
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return g_task_propagate_boolean (G_TASK (result), error);
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}
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static gboolean
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_pp_maintenance_command_is_supported (const gchar *printer_name,
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const gchar *command)
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{
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ipp_attribute_t *attr = NULL;
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gboolean is_supported = FALSE;
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ipp_t *request;
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ipp_t *response = NULL;
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g_autofree gchar *printer_uri = NULL;
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GPtrArray *available_commands = NULL;
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int i;
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printer_uri = g_strdup_printf ("ipp://localhost/printers/%s",
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printer_name);
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request = ippNewRequest (IPP_GET_PRINTER_ATTRIBUTES);
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ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_URI,
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"printer-uri", NULL, printer_uri);
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ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
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"requested-attributes", NULL, "printer-commands");
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response = cupsDoRequest (CUPS_HTTP_DEFAULT, request, "/");
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if (response != NULL)
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{
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if (ippGetStatusCode (response) <= IPP_OK_CONFLICT)
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{
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int commands_count;
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attr = ippFindAttribute (response, "printer-commands", IPP_TAG_ZERO);
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commands_count = attr != NULL ? ippGetCount (attr) : 0;
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if (commands_count > 0 &&
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ippGetValueTag (attr) != IPP_TAG_NOVALUE &&
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(ippGetValueTag (attr) == IPP_TAG_KEYWORD))
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{
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available_commands = g_ptr_array_new_full (commands_count, g_free);
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for (i = 0; i < commands_count; ++i)
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{
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/* Array gains ownership of the lower-cased string */
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g_ptr_array_add (available_commands, g_ascii_strdown (ippGetString (attr, i, NULL), -1));
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}
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}
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}
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ippDelete (response);
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}
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if (available_commands != NULL)
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{
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g_autofree gchar *command_lowercase = g_ascii_strdown (command, -1);
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for (i = 0; i < available_commands->len; ++i)
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{
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const gchar *available_command = g_ptr_array_index (available_commands, i);
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if (g_strcmp0 (available_command, command_lowercase) == 0)
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{
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is_supported = TRUE;
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break;
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}
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}
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g_ptr_array_free (available_commands, TRUE);
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}
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return is_supported;
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}
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static void
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_pp_maintenance_command_is_supported_thread (GTask *task,
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gpointer source_object,
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gpointer task_data,
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GCancellable *cancellable)
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{
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PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (source_object);
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gboolean success = FALSE;
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success = _pp_maintenance_command_is_supported (self->printer_name, self->command);
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g_task_return_boolean (task, success);
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}
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void
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pp_maintenance_command_is_supported_async (PpMaintenanceCommand *self,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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g_autoptr(GTask) task = NULL;
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task = g_task_new (self, cancellable, callback, user_data);
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g_task_set_check_cancellable (task, TRUE);
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g_task_run_in_thread (task, _pp_maintenance_command_is_supported_thread);
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}
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gboolean
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pp_maintenance_command_is_supported_finish (PpMaintenanceCommand *self,
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GAsyncResult *result,
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GError **error)
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{
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g_return_val_if_fail (g_task_is_valid (result, self), FALSE);
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return g_task_propagate_boolean (G_TASK (result), error);
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}
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