diff options
Diffstat (limited to 'panels/printers/pp-maintenance-command.c')
| -rw-r--r-- | panels/printers/pp-maintenance-command.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/panels/printers/pp-maintenance-command.c b/panels/printers/pp-maintenance-command.c new file mode 100644 index 0000000..feb144c --- /dev/null +++ b/panels/printers/pp-maintenance-command.c @@ -0,0 +1,394 @@ +/* -*- 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 2 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, see <http://www.gnu.org/licenses/>. + * + * Author: Marek Kasik <mkasik@redhat.com> + */ + +#include <glib/gstdio.h> + +#include "pp-maintenance-command.h" + +#include "pp-utils.h" + +#if (CUPS_VERSION_MAJOR > 1) || (CUPS_VERSION_MINOR > 5) +#define HAVE_CUPS_1_6 1 +#endif + +#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 _PpMaintenanceCommand +{ + GObject parent_instance; + + gchar *printer_name; + gchar *command; + gchar *parameters; + gchar *title; +}; + +G_DEFINE_TYPE (PpMaintenanceCommand, pp_maintenance_command, G_TYPE_OBJECT); + +enum { + PROP_0 = 0, + PROP_PRINTER_NAME, + PROP_COMMAND, + PROP_PARAMETERS, + PROP_TITLE +}; + +static void +pp_maintenance_command_finalize (GObject *object) +{ + PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (object); + + g_clear_pointer (&self->printer_name, g_free); + g_clear_pointer (&self->command, g_free); + g_clear_pointer (&self->parameters, g_free); + g_clear_pointer (&self->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 = PP_MAINTENANCE_COMMAND (object); + + switch (prop_id) + { + case PROP_PRINTER_NAME: + g_value_set_string (value, self->printer_name); + break; + case PROP_COMMAND: + g_value_set_string (value, self->command); + break; + case PROP_PARAMETERS: + g_value_set_string (value, self->parameters); + break; + case PROP_TITLE: + g_value_set_string (value, self->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->printer_name); + self->printer_name = g_value_dup_string (value); + break; + case PROP_COMMAND: + g_free (self->command); + self->command = g_value_dup_string (value); + break; + case PROP_PARAMETERS: + g_free (self->parameters); + self->parameters = g_value_dup_string (value); + break; + case PROP_TITLE: + g_free (self->title); + self->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); + + 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_PARAMETERS, + g_param_spec_string ("parameters", + "Optional parameters", + "Optional parameters for the maintenance command", + 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 *self) +{ +} + +PpMaintenanceCommand * +pp_maintenance_command_new (const gchar *printer_name, + const gchar *command, + const gchar *parameters, + const gchar *title) +{ + return g_object_new (PP_TYPE_MAINTENANCE_COMMAND, + "printer-name", printer_name, + "command", command, + "parameters", parameters, + "title", title, + NULL); +} + +static gboolean _pp_maintenance_command_is_supported (const gchar *printer_name, + const gchar *command); + +static void +_pp_maintenance_command_execute_thread (GTask *task, + gpointer source_object, + gpointer task_data, + GCancellable *cancellable) +{ + PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (source_object); + gboolean success = FALSE; + GError *error = NULL; + + if (_pp_maintenance_command_is_supported (self->printer_name, self->command)) + { + ipp_t *request; + ipp_t *response = NULL; + g_autofree gchar *printer_uri = NULL; + g_autofree gchar *file_name = NULL; + int fd = -1; + + printer_uri = g_strdup_printf ("ipp://localhost/printers/%s", + self->printer_name); + + 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, self->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", self->command); + if (self->parameters) + fprintf (file, " %s", self->parameters); + fprintf (file, "\n"); + fclose (file); + + response = cupsDoFileRequest (CUPS_HTTP_DEFAULT, request, "/", file_name); + g_unlink (file_name); + + if (response != NULL) + { + if (ippGetStatusCode (response) <= IPP_OK_CONFLICT) + { + success = TRUE; + } + + ippDelete (response); + } + } + } + else + { + success = TRUE; + } + + if (!success) + { + g_task_return_new_error (task, + G_IO_ERROR, + G_IO_ERROR_FAILED, + "Execution of maintenance command failed."); + } + + g_task_return_boolean (task, success); +} + +void +pp_maintenance_command_execute_async (PpMaintenanceCommand *self, + GCancellable *cancellable, + GAsyncReadyCallback callback, + gpointer user_data) +{ + GTask *task; + + task = g_task_new (self, cancellable, callback, user_data); + g_task_set_check_cancellable (task, TRUE); + g_task_run_in_thread (task, _pp_maintenance_command_execute_thread); + + g_object_unref (task); +} + +gboolean +pp_maintenance_command_execute_finish (PpMaintenanceCommand *self, + GAsyncResult *result, + GError **error) +{ + g_return_val_if_fail (g_task_is_valid (result, self), FALSE); + + return g_task_propagate_boolean (G_TASK (result), error); +} + +static gboolean +_pp_maintenance_command_is_supported (const gchar *printer_name, + const gchar *command) +{ + ipp_attribute_t *attr = NULL; + gboolean is_supported = FALSE; + ipp_t *request; + ipp_t *response = NULL; + g_autofree gchar *printer_uri = NULL; + GPtrArray *available_commands = NULL; + int i; + + printer_uri = g_strdup_printf ("ipp://localhost/printers/%s", + printer_name); + + request = ippNewRequest (IPP_GET_PRINTER_ATTRIBUTES); + ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_URI, + "printer-uri", NULL, printer_uri); + ippAddString (request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD, + "requested-attributes", NULL, "printer-commands"); + response = cupsDoRequest (CUPS_HTTP_DEFAULT, request, "/"); + if (response != NULL) + { + if (ippGetStatusCode (response) <= IPP_OK_CONFLICT) + { + int commands_count; + + attr = ippFindAttribute (response, "printer-commands", IPP_TAG_ZERO); + commands_count = attr != NULL ? ippGetCount (attr) : 0; + if (commands_count > 0 && + ippGetValueTag (attr) != IPP_TAG_NOVALUE && + (ippGetValueTag (attr) == IPP_TAG_KEYWORD)) + { + available_commands = g_ptr_array_new_full (commands_count, g_free); + for (i = 0; i < commands_count; ++i) + { + /* Array gains ownership of the lower-cased string */ + g_ptr_array_add (available_commands, g_ascii_strdown (ippGetString (attr, i, NULL), -1)); + } + } + } + + ippDelete (response); + } + + if (available_commands != NULL) + { + g_autofree gchar *command_lowercase = g_ascii_strdown (command, -1); + for (i = 0; i < available_commands->len; ++i) + { + const gchar *available_command = g_ptr_array_index (available_commands, i); + if (g_strcmp0 (available_command, command_lowercase) == 0) + { + is_supported = TRUE; + break; + } + } + + g_ptr_array_free (available_commands, TRUE); + } + + return is_supported; +} + +static void +_pp_maintenance_command_is_supported_thread (GTask *task, + gpointer source_object, + gpointer task_data, + GCancellable *cancellable) +{ + PpMaintenanceCommand *self = PP_MAINTENANCE_COMMAND (source_object); + gboolean success = FALSE; + + success = _pp_maintenance_command_is_supported (self->printer_name, self->command); + g_task_return_boolean (task, success); +} + +void +pp_maintenance_command_is_supported_async (PpMaintenanceCommand *self, + GCancellable *cancellable, + GAsyncReadyCallback callback, + gpointer user_data) +{ + GTask *task; + + task = g_task_new (self, cancellable, callback, user_data); + g_task_set_check_cancellable (task, TRUE); + g_task_run_in_thread (task, _pp_maintenance_command_is_supported_thread); + + g_object_unref (task); +} + +gboolean +pp_maintenance_command_is_supported_finish (PpMaintenanceCommand *self, + GAsyncResult *result, + GError **error) +{ + g_return_val_if_fail (g_task_is_valid (result, self), FALSE); + + return g_task_propagate_boolean (G_TASK (result), error); +} |