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-rw-r--r--panels/printers/pp-host.c747
1 files changed, 747 insertions, 0 deletions
diff --git a/panels/printers/pp-host.c b/panels/printers/pp-host.c
new file mode 100644
index 0000000..a31a606
--- /dev/null
+++ b/panels/printers/pp-host.c
@@ -0,0 +1,747 @@
+/* -*- 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 "config.h"
+
+#include "pp-host.h"
+
+#include <glib/gi18n.h>
+
+#define BUFFER_LENGTH 1024
+
+typedef struct
+{
+ gchar *hostname;
+ gint port;
+} PpHostPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (PpHost, pp_host, G_TYPE_OBJECT);
+
+enum {
+ PROP_0 = 0,
+ PROP_HOSTNAME,
+ PROP_PORT,
+};
+
+enum {
+ AUTHENTICATION_REQUIRED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static void
+pp_host_finalize (GObject *object)
+{
+ PpHost *self = PP_HOST (object);
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+
+ g_clear_pointer (&priv->hostname, g_free);
+
+ G_OBJECT_CLASS (pp_host_parent_class)->finalize (object);
+}
+
+static void
+pp_host_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *param_spec)
+{
+ PpHost *self = PP_HOST (object);
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+
+ switch (prop_id)
+ {
+ case PROP_HOSTNAME:
+ g_value_set_string (value, priv->hostname);
+ break;
+ case PROP_PORT:
+ g_value_set_int (value, priv->port);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
+ prop_id,
+ param_spec);
+ break;
+ }
+}
+
+static void
+pp_host_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *param_spec)
+{
+ PpHost *self = PP_HOST (object);
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+
+ switch (prop_id)
+ {
+ case PROP_HOSTNAME:
+ g_free (priv->hostname);
+ priv->hostname = g_value_dup_string (value);
+ break;
+ case PROP_PORT:
+ priv->port = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
+ prop_id,
+ param_spec);
+ break;
+ }
+}
+
+static void
+pp_host_class_init (PpHostClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ gobject_class->set_property = pp_host_set_property;
+ gobject_class->get_property = pp_host_get_property;
+ gobject_class->finalize = pp_host_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_HOSTNAME,
+ g_param_spec_string ("hostname",
+ "Hostname",
+ "The hostname",
+ NULL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_class, PROP_PORT,
+ g_param_spec_int ("port",
+ "Port",
+ "The port",
+ -1, G_MAXINT32, PP_HOST_UNSET_PORT,
+ G_PARAM_READWRITE));
+
+ signals[AUTHENTICATION_REQUIRED] =
+ g_signal_new ("authentication-required",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ 0,
+ NULL, NULL, NULL,
+ G_TYPE_NONE, 0);
+}
+
+static void
+pp_host_init (PpHost *self)
+{
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+ priv->port = PP_HOST_UNSET_PORT;
+}
+
+PpHost *
+pp_host_new (const gchar *hostname)
+{
+ return g_object_new (PP_TYPE_HOST,
+ "hostname", hostname,
+ NULL);
+}
+
+static gchar **
+line_split (gchar *line)
+{
+ gboolean escaped = FALSE;
+ gboolean quoted = FALSE;
+ gboolean in_word = FALSE;
+ gchar **words = NULL;
+ gchar **result = NULL;
+ g_autofree gchar *buffer = NULL;
+ gchar ch;
+ gint n = 0;
+ gint i, j = 0, k = 0;
+
+ if (line)
+ {
+ n = strlen (line);
+ words = g_new0 (gchar *, n + 1);
+ buffer = g_new0 (gchar, n + 1);
+
+ for (i = 0; i < n; i++)
+ {
+ ch = line[i];
+
+ if (escaped)
+ {
+ buffer[k++] = ch;
+ escaped = FALSE;
+ continue;
+ }
+
+ if (ch == '\\')
+ {
+ in_word = TRUE;
+ escaped = TRUE;
+ continue;
+ }
+
+ if (in_word)
+ {
+ if (quoted)
+ {
+ if (ch == '"')
+ quoted = FALSE;
+ else
+ buffer[k++] = ch;
+ }
+ else if (g_ascii_isspace (ch))
+ {
+ words[j++] = g_strdup (buffer);
+ memset (buffer, 0, n + 1);
+ k = 0;
+ in_word = FALSE;
+ }
+ else if (ch == '"')
+ quoted = TRUE;
+ else
+ buffer[k++] = ch;
+ }
+ else
+ {
+ if (ch == '"')
+ {
+ in_word = TRUE;
+ quoted = TRUE;
+ }
+ else if (!g_ascii_isspace (ch))
+ {
+ in_word = TRUE;
+ buffer[k++] = ch;
+ }
+ }
+ }
+ }
+
+ if (buffer && buffer[0] != '\0')
+ words[j++] = g_strdup (buffer);
+
+ result = g_strdupv (words);
+ g_strfreev (words);
+
+ return result;
+}
+
+static void
+_pp_host_get_snmp_devices_thread (GTask *task,
+ gpointer source_object,
+ gpointer task_data,
+ GCancellable *cancellable)
+{
+ PpHost *self = source_object;
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+ g_autoptr(GPtrArray) devices = NULL;
+ g_autoptr(GError) error = NULL;
+ g_auto(GStrv) argv = NULL;
+ g_autofree gchar *stdout_string = NULL;
+ gint exit_status;
+
+ devices = g_ptr_array_new_with_free_func (g_object_unref);
+
+ argv = g_new0 (gchar *, 3);
+ argv[0] = g_strdup ("/usr/lib/cups/backend/snmp");
+ argv[1] = g_strdup (priv->hostname);
+
+ /* Use SNMP to get printer's informations */
+ g_spawn_sync (NULL,
+ argv,
+ NULL,
+ G_SPAWN_STDERR_TO_DEV_NULL,
+ NULL,
+ NULL,
+ &stdout_string,
+ NULL,
+ &exit_status,
+ &error);
+
+ if (exit_status == 0 && stdout_string)
+ {
+ g_auto(GStrv) printer_informations = NULL;
+ gint length;
+
+ printer_informations = line_split (stdout_string);
+ length = g_strv_length (printer_informations);
+
+ if (length >= 4)
+ {
+ g_autofree gchar *device_name = NULL;
+ gboolean is_network_device;
+ PpPrintDevice *device;
+
+ device_name = g_strdup (printer_informations[3]);
+ g_strcanon (device_name, ALLOWED_CHARACTERS, '-');
+ is_network_device = g_strcmp0 (printer_informations[0], "network") == 0;
+
+ device = g_object_new (PP_TYPE_PRINT_DEVICE,
+ "is-network-device", is_network_device,
+ "device-uri", printer_informations[1],
+ "device-make-and-model", printer_informations[2],
+ "device-info", printer_informations[3],
+ "acquisition-method", ACQUISITION_METHOD_SNMP,
+ "device-name", device_name,
+ NULL);
+
+ if (length >= 5 && printer_informations[4][0] != '\0')
+ g_object_set (device, "device-id", printer_informations[4], NULL);
+
+ if (length >= 6 && printer_informations[5][0] != '\0')
+ g_object_set (device, "device-location", printer_informations[5], NULL);
+
+ g_ptr_array_add (devices, device);
+ }
+ }
+
+ g_task_return_pointer (task, g_ptr_array_ref (devices), (GDestroyNotify) g_ptr_array_unref);
+}
+
+void
+pp_host_get_snmp_devices_async (PpHost *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = NULL;
+
+ task = g_task_new (self, cancellable, callback, user_data);
+ g_task_run_in_thread (task, _pp_host_get_snmp_devices_thread);
+}
+
+GPtrArray *
+pp_host_get_snmp_devices_finish (PpHost *self,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (g_task_is_valid (res, self), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+static void
+_pp_host_get_remote_cups_devices_thread (GTask *task,
+ gpointer source_object,
+ gpointer task_data,
+ GCancellable *cancellable)
+{
+ cups_dest_t *dests = NULL;
+ PpHost *self = (PpHost *) source_object;
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+ g_autoptr(GPtrArray) devices = NULL;
+ http_t *http;
+ gint num_of_devices = 0;
+ gint port;
+ gint i;
+
+ devices = g_ptr_array_new_with_free_func (g_object_unref);
+
+ if (priv->port == PP_HOST_UNSET_PORT)
+ port = PP_HOST_DEFAULT_IPP_PORT;
+ else
+ port = priv->port;
+
+ /* Connect to remote CUPS server and get its devices */
+#ifdef HAVE_CUPS_HTTPCONNECT2
+ http = httpConnect2 (priv->hostname, port, NULL, AF_UNSPEC,
+ HTTP_ENCRYPTION_IF_REQUESTED, 1, 30000, NULL);
+#else
+ http = httpConnect (priv->hostname, port);
+#endif
+ if (http)
+ {
+ num_of_devices = cupsGetDests2 (http, &dests);
+ if (num_of_devices > 0)
+ {
+ for (i = 0; i < num_of_devices; i++)
+ {
+ g_autofree gchar *device_uri = NULL;
+ const char *device_location;
+ PpPrintDevice *device;
+
+ device_uri = g_strdup_printf ("ipp://%s:%d/printers/%s",
+ priv->hostname,
+ port,
+ dests[i].name);
+
+ device_location = cupsGetOption ("printer-location",
+ dests[i].num_options,
+ dests[i].options);
+
+ device = g_object_new (PP_TYPE_PRINT_DEVICE,
+ "is-network-device", TRUE,
+ "device-uri", device_uri,
+ "device-name", dests[i].name,
+ "device-location", device_location,
+ "host-name", priv->hostname,
+ "host-port", port,
+ "acquisition-method", ACQUISITION_METHOD_REMOTE_CUPS_SERVER,
+ NULL);
+ g_ptr_array_add (devices, device);
+ }
+ }
+
+ httpClose (http);
+ }
+
+ g_task_return_pointer (task, g_ptr_array_ref (devices), (GDestroyNotify) g_ptr_array_unref);
+}
+
+void
+pp_host_get_remote_cups_devices_async (PpHost *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = NULL;
+
+ task = g_task_new (self, cancellable, callback, user_data);
+ g_task_run_in_thread (task, _pp_host_get_remote_cups_devices_thread);
+}
+
+GPtrArray *
+pp_host_get_remote_cups_devices_finish (PpHost *self,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (g_task_is_valid (res, self), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+typedef struct
+{
+ PpHost *host;
+ gint port;
+} JetDirectData;
+
+static void
+jetdirect_data_free (JetDirectData *data)
+{
+ if (data != NULL)
+ {
+ g_clear_object (&data->host);
+ g_free (data);
+ }
+}
+
+static void
+jetdirect_connection_test_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ g_autoptr(GSocketConnection) connection = NULL;
+ PpHostPrivate *priv;
+ JetDirectData *data;
+ g_autoptr(GPtrArray) devices = NULL;
+ g_autoptr(GError) error = NULL;
+ g_autoptr(GTask) task = G_TASK (user_data);
+
+ data = g_task_get_task_data (task);
+ priv = pp_host_get_instance_private (data->host);
+
+ devices = g_ptr_array_new_with_free_func (g_object_unref);
+
+ connection = g_socket_client_connect_to_host_finish (G_SOCKET_CLIENT (source_object),
+ res,
+ &error);
+
+ if (connection != NULL)
+ {
+ g_autofree gchar *device_uri = NULL;
+ PpPrintDevice *device;
+
+ g_io_stream_close (G_IO_STREAM (connection), NULL, NULL);
+
+ device_uri = g_strdup_printf ("socket://%s:%d",
+ priv->hostname,
+ data->port);
+
+ device = g_object_new (PP_TYPE_PRINT_DEVICE,
+ "is-network-device", TRUE,
+ "device-uri", device_uri,
+ /* Translators: The found device is a JetDirect printer */
+ "device-name", _("JetDirect Printer"),
+ "host-name", priv->hostname,
+ "host-port", data->port,
+ "acquisition-method", ACQUISITION_METHOD_JETDIRECT,
+ NULL);
+ g_ptr_array_add (devices, device);
+ }
+
+ g_task_return_pointer (task, g_ptr_array_ref (devices), (GDestroyNotify) g_ptr_array_unref);
+}
+
+/* Test whether given host has an AppSocket/HP JetDirect printer connected.
+ See http://en.wikipedia.org/wiki/JetDirect
+ http://www.cups.org/documentation.php/network.html */
+void
+pp_host_get_jetdirect_devices_async (PpHost *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+ JetDirectData *data;
+ g_autoptr(GTask) task = NULL;
+ g_autofree gchar *address = NULL;
+
+ data = g_new0 (JetDirectData, 1);
+ data->host = g_object_ref (self);
+
+ if (priv->port == PP_HOST_UNSET_PORT)
+ data->port = PP_HOST_DEFAULT_JETDIRECT_PORT;
+ else
+ data->port = priv->port;
+
+ task = g_task_new (G_OBJECT (self), cancellable, callback, user_data);
+ g_task_set_task_data (task, data, (GDestroyNotify) jetdirect_data_free);
+
+ address = g_strdup_printf ("%s:%d", priv->hostname, data->port);
+ if (address != NULL && address[0] != '/')
+ {
+ g_autoptr(GSocketClient) client = NULL;
+
+ client = g_socket_client_new ();
+
+ g_socket_client_connect_to_host_async (client,
+ address,
+ data->port,
+ cancellable,
+ jetdirect_connection_test_cb,
+ g_steal_pointer (&task));
+ }
+ else
+ {
+ GPtrArray *devices = g_ptr_array_new_with_free_func (g_object_unref);
+ g_task_return_pointer (task, devices, (GDestroyNotify) g_ptr_array_unref);
+ }
+}
+
+GPtrArray *
+pp_host_get_jetdirect_devices_finish (PpHost *self,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (g_task_is_valid (res, self), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+static gboolean
+test_lpd_queue (GSocketClient *client,
+ gchar *address,
+ gint port,
+ GCancellable *cancellable,
+ gchar *queue_name)
+{
+ g_autoptr(GSocketConnection) connection = NULL;
+ gboolean result = FALSE;
+ g_autoptr(GError) error = NULL;
+
+ connection = g_socket_client_connect_to_host (client,
+ address,
+ port,
+ cancellable,
+ &error);
+
+ if (connection != NULL)
+ {
+ if (G_IS_TCP_CONNECTION (connection))
+ {
+ GOutputStream *output;
+ GInputStream *input;
+ gssize bytes_read, bytes_written;
+ gchar buffer[BUFFER_LENGTH];
+ gint length;
+
+ output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
+ input = g_io_stream_get_input_stream (G_IO_STREAM (connection));
+
+ /* This LPD command is explained in RFC 1179, section 5.2 */
+ length = g_snprintf (buffer, BUFFER_LENGTH, "\2%s\n", queue_name);
+
+ bytes_written = g_output_stream_write (output,
+ buffer,
+ length,
+ NULL,
+ &error);
+
+ if (bytes_written != -1)
+ {
+ bytes_read = g_input_stream_read (input,
+ buffer,
+ BUFFER_LENGTH,
+ NULL,
+ &error);
+
+ if (bytes_read != -1)
+ {
+ if (bytes_read > 0 && buffer[0] == 0)
+ {
+ /* This LPD command is explained in RFC 1179, section 6.1 */
+ length = g_snprintf (buffer, BUFFER_LENGTH, "\1\n");
+
+ bytes_written = g_output_stream_write (output,
+ buffer,
+ length,
+ NULL,
+ &error);
+
+ result = TRUE;
+ }
+ }
+ }
+ }
+
+ g_io_stream_close (G_IO_STREAM (connection), NULL, NULL);
+ }
+
+ return result;
+}
+
+static void
+_pp_host_get_lpd_devices_thread (GTask *task,
+ gpointer source_object,
+ gpointer task_data,
+ GCancellable *cancellable)
+{
+ g_autoptr(GSocketConnection) connection = NULL;
+ PpHost *self = source_object;
+ PpHostPrivate *priv = pp_host_get_instance_private (self);
+ g_autoptr(GPtrArray) devices = NULL;
+ g_autoptr(GSocketClient) client = NULL;
+ g_autoptr(GError) error = NULL;
+ GList *candidates = NULL;
+ GList *iter;
+ gchar *found_queue = NULL;
+ gchar *candidate;
+ g_autofree gchar *address = NULL;
+ gint port;
+ gint i;
+
+ if (priv->port == PP_HOST_UNSET_PORT)
+ port = PP_HOST_DEFAULT_LPD_PORT;
+ else
+ port = priv->port;
+
+ devices = g_ptr_array_new_with_free_func (g_object_unref);
+
+ address = g_strdup_printf ("%s:%d", priv->hostname, port);
+ if (address == NULL || address[0] == '/')
+ {
+ g_task_return_pointer (task, g_ptr_array_ref (devices), (GDestroyNotify) g_ptr_array_unref);
+ return;
+ }
+
+ client = g_socket_client_new ();
+
+ connection = g_socket_client_connect_to_host (client,
+ address,
+ port,
+ cancellable,
+ &error);
+
+ if (connection != NULL)
+ {
+ g_io_stream_close (G_IO_STREAM (connection), NULL, NULL);
+
+ /* Most of this list is taken from system-config-printer */
+ candidates = g_list_append (candidates, g_strdup ("PASSTHRU"));
+ candidates = g_list_append (candidates, g_strdup ("AUTO"));
+ candidates = g_list_append (candidates, g_strdup ("BINPS"));
+ candidates = g_list_append (candidates, g_strdup ("RAW"));
+ candidates = g_list_append (candidates, g_strdup ("TEXT"));
+ candidates = g_list_append (candidates, g_strdup ("ps"));
+ candidates = g_list_append (candidates, g_strdup ("lp"));
+ candidates = g_list_append (candidates, g_strdup ("PORT1"));
+
+ for (i = 0; i < 8; i++)
+ {
+ candidates = g_list_append (candidates, g_strdup_printf ("LPT%d", i));
+ candidates = g_list_append (candidates, g_strdup_printf ("LPT%d_PASSTHRU", i));
+ candidates = g_list_append (candidates, g_strdup_printf ("COM%d", i));
+ candidates = g_list_append (candidates, g_strdup_printf ("COM%d_PASSTHRU", i));
+ }
+
+ for (i = 0; i < 50; i++)
+ candidates = g_list_append (candidates, g_strdup_printf ("pr%d", i));
+
+ for (iter = candidates; iter != NULL; iter = iter->next)
+ {
+ candidate = (gchar *) iter->data;
+
+ if (test_lpd_queue (client,
+ address,
+ port,
+ cancellable,
+ candidate))
+ {
+ found_queue = g_strdup (candidate);
+ break;
+ }
+ }
+
+ if (found_queue != NULL)
+ {
+ g_autofree gchar *device_uri = NULL;
+ PpPrintDevice *device;
+
+ device_uri = g_strdup_printf ("lpd://%s:%d/%s",
+ priv->hostname,
+ port,
+ found_queue);
+
+ device = g_object_new (PP_TYPE_PRINT_DEVICE,
+ "is-network-device", TRUE,
+ "device-uri", device_uri,
+ /* Translators: The found device is a Line Printer Daemon printer */
+ "device-name", _("LPD Printer"),
+ "host-name", priv->hostname,
+ "host-port", port,
+ "acquisition-method", ACQUISITION_METHOD_LPD,
+ NULL);
+ g_ptr_array_add (devices, device);
+ }
+
+ g_list_free_full (candidates, g_free);
+ }
+
+ g_task_return_pointer (task, g_ptr_array_ref (devices), (GDestroyNotify) g_ptr_array_unref);
+}
+
+void
+pp_host_get_lpd_devices_async (PpHost *self,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = NULL;
+
+ task = g_task_new (G_OBJECT (self), cancellable, callback, user_data);
+ g_task_run_in_thread (task, _pp_host_get_lpd_devices_thread);
+}
+
+GPtrArray *
+pp_host_get_lpd_devices_finish (PpHost *self,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (g_task_is_valid (res, self), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ return g_task_propagate_pointer (G_TASK (res), error);
+}
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