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Diffstat (limited to 'plugins/smartcard/msd-smartcard-manager.c')
-rw-r--r--plugins/smartcard/msd-smartcard-manager.c1372
1 files changed, 1372 insertions, 0 deletions
diff --git a/plugins/smartcard/msd-smartcard-manager.c b/plugins/smartcard/msd-smartcard-manager.c
new file mode 100644
index 0000000..ed823f4
--- /dev/null
+++ b/plugins/smartcard/msd-smartcard-manager.c
@@ -0,0 +1,1372 @@
+/* msd-smartcard-manager.c - object for monitoring smartcard insertion and
+ * removal events
+ *
+ * Copyright (C) 2006, 2009 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, 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.
+ *
+ * Written By: Ray Strode
+ */
+#include "config.h"
+
+#include "msd-smartcard-manager.h"
+
+#define SMARTCARD_ENABLE_INTERNAL_API
+#include "msd-smartcard.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#include <prerror.h>
+#include <nss.h>
+#include <pk11func.h>
+#include <secmod.h>
+#include <secerr.h>
+
+#ifndef MSD_SMARTCARD_MANAGER_NSS_DB
+#define MSD_SMARTCARD_MANAGER_NSS_DB SYSCONFDIR"/pki/nssdb"
+#endif
+
+typedef enum _MsdSmartcardManagerState MsdSmartcardManagerState;
+typedef struct _MsdSmartcardManagerWorker MsdSmartcardManagerWorker;
+
+enum _MsdSmartcardManagerState {
+ MSD_SMARTCARD_MANAGER_STATE_STOPPED = 0,
+ MSD_SMARTCARD_MANAGER_STATE_STARTING,
+ MSD_SMARTCARD_MANAGER_STATE_STARTED,
+ MSD_SMARTCARD_MANAGER_STATE_STOPPING,
+};
+
+struct _MsdSmartcardManagerPrivate {
+ MsdSmartcardManagerState state;
+ SECMODModule *module;
+ char *module_path;
+
+ GSource *smartcard_event_source;
+ GPid smartcard_event_watcher_pid;
+ GHashTable *smartcards;
+
+ GThread *worker_thread;
+
+ guint poll_timeout_id;
+
+ guint32 is_unstoppable : 1;
+ guint32 nss_is_loaded : 1;
+};
+
+struct _MsdSmartcardManagerWorker {
+ SECMODModule *module;
+ GHashTable *smartcards;
+ int write_fd;
+
+ guint32 nss_is_loaded : 1;
+};
+
+static void msd_smartcard_manager_finalize (GObject *object);
+static void msd_smartcard_manager_class_install_signals (MsdSmartcardManagerClass *service_class);
+static void msd_smartcard_manager_class_install_properties (MsdSmartcardManagerClass *service_class);
+static void msd_smartcard_manager_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void msd_smartcard_manager_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void msd_smartcard_manager_set_module_path (MsdSmartcardManager *manager,
+ const char *module_path);
+static void msd_smartcard_manager_card_removed_handler (MsdSmartcardManager *manager,
+ MsdSmartcard *card);
+static void msd_smartcard_manager_card_inserted_handler (MsdSmartcardManager *manager_class,
+ MsdSmartcard *card);
+static gboolean msd_smartcard_manager_stop_now (MsdSmartcardManager *manager);
+static void msd_smartcard_manager_queue_stop (MsdSmartcardManager *manager);
+
+static gboolean msd_smartcard_manager_create_worker (MsdSmartcardManager *manager,
+ int *worker_fd, GThread **worker_thread);
+
+static MsdSmartcardManagerWorker * msd_smartcard_manager_worker_new (int write_fd);
+static void msd_smartcard_manager_worker_free (MsdSmartcardManagerWorker *worker);
+static gboolean open_pipe (int *write_fd, int *read_fd);
+static gboolean read_bytes (int fd, gpointer bytes, gsize num_bytes);
+static gboolean write_bytes (int fd, gconstpointer bytes, gsize num_bytes);
+static MsdSmartcard *read_smartcard (int fd, SECMODModule *module);
+static gboolean write_smartcard (int fd, MsdSmartcard *card);
+
+enum {
+ PROP_0 = 0,
+ PROP_MODULE_PATH,
+ NUMBER_OF_PROPERTIES
+};
+
+enum {
+ SMARTCARD_INSERTED = 0,
+ SMARTCARD_REMOVED,
+ ERROR,
+ NUMBER_OF_SIGNALS
+};
+
+static guint msd_smartcard_manager_signals[NUMBER_OF_SIGNALS];
+
+G_DEFINE_TYPE (MsdSmartcardManager,
+ msd_smartcard_manager,
+ G_TYPE_OBJECT);
+
+static void
+msd_smartcard_manager_class_init (MsdSmartcardManagerClass *manager_class)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = G_OBJECT_CLASS (manager_class);
+
+ gobject_class->finalize = msd_smartcard_manager_finalize;
+
+ msd_smartcard_manager_class_install_signals (manager_class);
+ msd_smartcard_manager_class_install_properties (manager_class);
+
+ g_type_class_add_private (manager_class,
+ sizeof (MsdSmartcardManagerPrivate));
+}
+
+static void
+msd_smartcard_manager_class_install_properties (MsdSmartcardManagerClass *card_class)
+{
+ GObjectClass *object_class;
+ GParamSpec *param_spec;
+
+ object_class = G_OBJECT_CLASS (card_class);
+ object_class->set_property = msd_smartcard_manager_set_property;
+ object_class->get_property = msd_smartcard_manager_get_property;
+
+ param_spec = g_param_spec_string ("module-path", _("Module Path"),
+ _("path to smartcard PKCS #11 driver"),
+ NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+ g_object_class_install_property (object_class, PROP_MODULE_PATH, param_spec);
+}
+
+static void
+msd_smartcard_manager_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ MsdSmartcardManager *manager = MSD_SMARTCARD_MANAGER (object);
+
+ switch (prop_id) {
+ case PROP_MODULE_PATH:
+ msd_smartcard_manager_set_module_path (manager,
+ g_value_get_string (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+msd_smartcard_manager_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ MsdSmartcardManager *manager = MSD_SMARTCARD_MANAGER (object);
+ char *module_path;
+
+ switch (prop_id) {
+ case PROP_MODULE_PATH:
+ module_path = msd_smartcard_manager_get_module_path (manager);
+ g_value_set_string (value, module_path);
+ g_free (module_path);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+char *
+msd_smartcard_manager_get_module_path (MsdSmartcardManager *manager)
+{
+ return manager->priv->module_path;
+}
+
+static void
+msd_smartcard_manager_set_module_path (MsdSmartcardManager *manager,
+ const char *module_path)
+{
+ if ((manager->priv->module_path == NULL) && (module_path == NULL)) {
+ return;
+ }
+
+ if (((manager->priv->module_path == NULL) ||
+ (module_path == NULL) ||
+ (strcmp (manager->priv->module_path, module_path) != 0))) {
+ g_free (manager->priv->module_path);
+ manager->priv->module_path = g_strdup (module_path);
+ g_object_notify (G_OBJECT (manager), "module-path");
+ }
+}
+
+static void
+msd_smartcard_manager_card_removed_handler (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ g_debug ("informing smartcard of its removal");
+ _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_REMOVED);
+ g_debug ("done");
+}
+
+static void
+msd_smartcard_manager_card_inserted_handler (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ g_debug ("informing smartcard of its insertion");
+
+ _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_INSERTED);
+ g_debug ("done");
+
+}
+
+static void
+msd_smartcard_manager_class_install_signals (MsdSmartcardManagerClass *manager_class)
+{
+ GObjectClass *object_class;
+
+ object_class = G_OBJECT_CLASS (manager_class);
+
+ msd_smartcard_manager_signals[SMARTCARD_INSERTED] =
+ g_signal_new ("smartcard-inserted",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (MsdSmartcardManagerClass,
+ smartcard_inserted),
+ NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1, G_TYPE_POINTER);
+ manager_class->smartcard_inserted = msd_smartcard_manager_card_inserted_handler;
+
+ msd_smartcard_manager_signals[SMARTCARD_REMOVED] =
+ g_signal_new ("smartcard-removed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (MsdSmartcardManagerClass,
+ smartcard_removed),
+ NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1, G_TYPE_POINTER);
+ manager_class->smartcard_removed = msd_smartcard_manager_card_removed_handler;
+
+ msd_smartcard_manager_signals[ERROR] =
+ g_signal_new ("error",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (MsdSmartcardManagerClass, error),
+ NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1, G_TYPE_POINTER);
+ manager_class->error = NULL;
+}
+
+static gboolean
+slot_id_equal (CK_SLOT_ID *slot_id_1,
+ CK_SLOT_ID *slot_id_2)
+{
+ g_assert (slot_id_1 != NULL);
+ g_assert (slot_id_2 != NULL);
+
+ return *slot_id_1 == *slot_id_2;
+}
+
+static gboolean
+slot_id_hash (CK_SLOT_ID *slot_id)
+{
+ guint32 upper_bits, lower_bits;
+ int temp;
+
+ if (sizeof (CK_SLOT_ID) == sizeof (int)) {
+ return g_int_hash (slot_id);
+ }
+
+ upper_bits = ((*slot_id) >> 31) - 1;
+ lower_bits = (*slot_id) & 0xffffffff;
+
+ /* The upper bits are almost certainly always zero,
+ * so let's degenerate to g_int_hash for the
+ * (very) common case
+ */
+ temp = lower_bits + upper_bits;
+ return upper_bits + g_int_hash (&temp);
+}
+
+static void
+msd_smartcard_manager_init (MsdSmartcardManager *manager)
+{
+ g_debug ("initializing smartcard manager");
+
+ manager->priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
+ MSD_TYPE_SMARTCARD_MANAGER,
+ MsdSmartcardManagerPrivate);
+ manager->priv->poll_timeout_id = 0;
+ manager->priv->is_unstoppable = FALSE;
+ manager->priv->module = NULL;
+
+ manager->priv->smartcards =
+ g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ (GDestroyNotify) g_free,
+ (GDestroyNotify) g_object_unref);
+
+ if (!g_thread_supported ()) {
+ g_thread_init (NULL);
+ }
+
+}
+
+static void
+msd_smartcard_manager_finalize (GObject *object)
+{
+ MsdSmartcardManager *manager;
+ GObjectClass *gobject_class;
+
+ manager = MSD_SMARTCARD_MANAGER (object);
+ gobject_class =
+ G_OBJECT_CLASS (msd_smartcard_manager_parent_class);
+
+ msd_smartcard_manager_stop_now (manager);
+
+ g_hash_table_destroy (manager->priv->smartcards);
+ manager->priv->smartcards = NULL;
+
+ gobject_class->finalize (object);
+}
+
+GQuark
+msd_smartcard_manager_error_quark (void)
+{
+ static GQuark error_quark = 0;
+
+ if (error_quark == 0) {
+ error_quark = g_quark_from_static_string ("msd-smartcard-manager-error-quark");
+ }
+
+ return error_quark;
+}
+
+MsdSmartcardManager *
+msd_smartcard_manager_new (const char *module_path)
+{
+ MsdSmartcardManager *instance;
+
+ instance = MSD_SMARTCARD_MANAGER (g_object_new (MSD_TYPE_SMARTCARD_MANAGER,
+ "module-path", module_path,
+ NULL));
+
+ return instance;
+}
+
+static void
+msd_smartcard_manager_emit_error (MsdSmartcardManager *manager,
+ GError *error)
+{
+ manager->priv->is_unstoppable = TRUE;
+ g_signal_emit (manager, msd_smartcard_manager_signals[ERROR], 0,
+ error);
+ manager->priv->is_unstoppable = FALSE;
+}
+
+static void
+msd_smartcard_manager_emit_smartcard_inserted (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ manager->priv->is_unstoppable = TRUE;
+ g_signal_emit (manager, msd_smartcard_manager_signals[SMARTCARD_INSERTED], 0,
+ card);
+ manager->priv->is_unstoppable = FALSE;
+}
+
+static void
+msd_smartcard_manager_emit_smartcard_removed (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ MsdSmartcardManagerState old_state;
+
+ old_state = manager->priv->state;
+ manager->priv->is_unstoppable = TRUE;
+ g_signal_emit (manager, msd_smartcard_manager_signals[SMARTCARD_REMOVED], 0,
+ card);
+ manager->priv->is_unstoppable = FALSE;
+}
+
+static gboolean
+msd_smartcard_manager_check_for_and_process_events (GIOChannel *io_channel,
+ GIOCondition condition,
+ MsdSmartcardManager *manager)
+{
+ MsdSmartcard *card;
+ gboolean should_stop;
+ gchar event_type;
+ char *card_name;
+ int fd;
+
+ card = NULL;
+ should_stop = (condition & G_IO_HUP) || (condition & G_IO_ERR);
+
+ if (should_stop) {
+ g_debug ("received %s on event socket, stopping "
+ "manager...",
+ (condition & G_IO_HUP) && (condition & G_IO_ERR)?
+ "error and hangup" :
+ (condition & G_IO_HUP)?
+ "hangup" : "error");
+ }
+
+ if (!(condition & G_IO_IN)) {
+ goto out;
+ }
+
+ fd = g_io_channel_unix_get_fd (io_channel);
+
+ event_type = '\0';
+ if (!read_bytes (fd, &event_type, 1)) {
+ should_stop = TRUE;
+ goto out;
+ }
+
+ card = read_smartcard (fd, manager->priv->module);
+
+ if (card == NULL) {
+ should_stop = TRUE;
+ goto out;
+ }
+
+ card_name = msd_smartcard_get_name (card);
+
+ switch (event_type) {
+ case 'I':
+ g_hash_table_replace (manager->priv->smartcards,
+ card_name, card);
+ card_name = NULL;
+
+ msd_smartcard_manager_emit_smartcard_inserted (manager, card);
+ card = NULL;
+ break;
+
+ case 'R':
+ msd_smartcard_manager_emit_smartcard_removed (manager, card);
+ if (!g_hash_table_remove (manager->priv->smartcards, card_name)) {
+ g_debug ("got removal event of unknown card!");
+ }
+ g_free (card_name);
+ card_name = NULL;
+ card = NULL;
+ break;
+
+ default:
+ g_free (card_name);
+ card_name = NULL;
+ g_object_unref (card);
+
+ should_stop = TRUE;
+ break;
+ }
+
+out:
+ if (should_stop) {
+ GError *error;
+
+ error = g_error_new (MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_WATCHING_FOR_EVENTS,
+ "%s", (condition & G_IO_IN) ? g_strerror (errno) : _("received error or hang up from event source"));
+
+ msd_smartcard_manager_emit_error (manager, error);
+ g_error_free (error);
+ msd_smartcard_manager_stop_now (manager);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+msd_smartcard_manager_event_processing_stopped_handler (MsdSmartcardManager *manager)
+{
+ manager->priv->smartcard_event_source = NULL;
+ msd_smartcard_manager_stop_now (manager);
+}
+
+static gboolean
+open_pipe (int *write_fd,
+ int *read_fd)
+{
+ int pipe_fds[2] = { -1, -1 };
+
+ g_assert (write_fd != NULL);
+ g_assert (read_fd != NULL);
+
+ if (pipe (pipe_fds) < 0) {
+ return FALSE;
+ }
+
+ if (fcntl (pipe_fds[0], F_SETFD, FD_CLOEXEC) < 0) {
+ close (pipe_fds[0]);
+ close (pipe_fds[1]);
+ return FALSE;
+ }
+
+ if (fcntl (pipe_fds[1], F_SETFD, FD_CLOEXEC) < 0) {
+ close (pipe_fds[0]);
+ close (pipe_fds[1]);
+ return FALSE;
+ }
+
+ *read_fd = pipe_fds[0];
+ *write_fd = pipe_fds[1];
+
+ return TRUE;
+}
+
+static void
+msd_smartcard_manager_stop_watching_for_events (MsdSmartcardManager *manager)
+{
+ if (manager->priv->smartcard_event_source != NULL) {
+ g_source_destroy (manager->priv->smartcard_event_source);
+ manager->priv->smartcard_event_source = NULL;
+ }
+
+ if (manager->priv->worker_thread != NULL) {
+ SECMOD_CancelWait (manager->priv->module);
+ manager->priv->worker_thread = NULL;
+ }
+}
+
+static gboolean
+load_nss (GError **error)
+{
+ SECStatus status = SECSuccess;
+ static const guint32 flags =
+ NSS_INIT_READONLY | NSS_INIT_NOCERTDB | NSS_INIT_NOMODDB |
+ NSS_INIT_FORCEOPEN | NSS_INIT_NOROOTINIT |
+ NSS_INIT_OPTIMIZESPACE | NSS_INIT_PK11RELOAD;
+
+ g_debug ("attempting to load NSS database '%s'",
+ MSD_SMARTCARD_MANAGER_NSS_DB);
+
+ status = NSS_Initialize (MSD_SMARTCARD_MANAGER_NSS_DB,
+ "", "", SECMOD_DB, flags);
+
+ if (status != SECSuccess) {
+ gsize error_message_size;
+ char *error_message;
+
+ error_message_size = PR_GetErrorTextLength ();
+
+ if (error_message_size == 0) {
+ g_debug ("NSS security system could not be initialized");
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+ _("NSS security system could not be initialized"));
+ goto out;
+ }
+
+ error_message = g_slice_alloc0 (error_message_size);
+ PR_GetErrorText (error_message);
+
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+ "%s", error_message);
+ g_debug ("NSS security system could not be initialized - %s",
+ error_message);
+
+ g_slice_free1 (error_message_size, error_message);
+
+ goto out;
+ }
+
+ g_debug ("NSS database sucessfully loaded");
+ return TRUE;
+
+out:
+ g_debug ("NSS database couldn't be sucessfully loaded");
+ return FALSE;
+}
+
+static SECMODModule *
+load_driver (char *module_path,
+ GError **error)
+{
+ SECMODModule *module;
+ char *module_spec;
+ gboolean module_explicitly_specified;
+
+ g_debug ("attempting to load driver...");
+
+ module = NULL;
+ module_explicitly_specified = module_path != NULL;
+ if (module_explicitly_specified) {
+ module_spec = g_strdup_printf ("library=\"%s\"", module_path);
+ g_debug ("loading smartcard driver using spec '%s'",
+ module_spec);
+
+ module = SECMOD_LoadUserModule (module_spec,
+ NULL /* parent */,
+ FALSE /* recurse */);
+ g_free (module_spec);
+ module_spec = NULL;
+
+ } else {
+ SECMODModuleList *modules, *tmp;
+
+ modules = SECMOD_GetDefaultModuleList ();
+
+ for (tmp = modules; tmp != NULL; tmp = tmp->next) {
+ if (!SECMOD_HasRemovableSlots (tmp->module) ||
+ !tmp->module->loaded)
+ continue;
+
+ module = SECMOD_ReferenceModule (tmp->module);
+ break;
+ }
+ }
+
+ if (!module_explicitly_specified && module == NULL) {
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+ _("no suitable smartcard driver could be found"));
+ } else if (module == NULL || !module->loaded) {
+
+ gsize error_message_size;
+ char *error_message;
+
+ if (module != NULL && !module->loaded) {
+ g_debug ("module found but not loaded?!");
+ SECMOD_DestroyModule (module);
+ module = NULL;
+ }
+
+ error_message_size = PR_GetErrorTextLength ();
+
+ if (error_message_size == 0) {
+ g_debug ("smartcard driver '%s' could not be loaded",
+ module_path);
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+ _("smartcard driver '%s' could not be "
+ "loaded"), module_path);
+ goto out;
+ }
+
+ error_message = g_slice_alloc0 (error_message_size);
+ PR_GetErrorText (error_message);
+
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+ "%s", error_message);
+
+ g_debug ("smartcard driver '%s' could not be loaded - %s",
+ module_path, error_message);
+ g_slice_free1 (error_message_size, error_message);
+ }
+
+out:
+ return module;
+}
+
+static void
+msd_smartcard_manager_get_all_cards (MsdSmartcardManager *manager)
+{
+ int i;
+
+ for (i = 0; i < manager->priv->module->slotCount; i++) {
+ MsdSmartcard *card;
+ CK_SLOT_ID slot_id;
+ int slot_series;
+ char *card_name;
+
+ slot_id = PK11_GetSlotID (manager->priv->module->slots[i]);
+ slot_series = PK11_GetSlotSeries (manager->priv->module->slots[i]);
+
+ card = _msd_smartcard_new (manager->priv->module,
+ slot_id, slot_series);
+
+ card_name = msd_smartcard_get_name (card);
+
+ g_hash_table_replace (manager->priv->smartcards,
+ card_name, card);
+ }
+}
+
+gboolean
+msd_smartcard_manager_start (MsdSmartcardManager *manager,
+ GError **error)
+{
+ GError *watching_error;
+ int worker_fd;
+ GPid worker_pid;
+ GIOChannel *io_channel;
+ GSource *source;
+ GIOFlags channel_flags;
+ GError *nss_error;
+
+ if (manager->priv->state == MSD_SMARTCARD_MANAGER_STATE_STARTED) {
+ g_debug ("smartcard manager already started");
+ return TRUE;
+ }
+
+ manager->priv->state = MSD_SMARTCARD_MANAGER_STATE_STARTING;
+
+ worker_fd = -1;
+ worker_pid = 0;
+
+ nss_error = NULL;
+ if (!manager->priv->nss_is_loaded && !load_nss (&nss_error)) {
+ g_propagate_error (error, nss_error);
+ goto out;
+ }
+ manager->priv->nss_is_loaded = TRUE;
+
+ if (manager->priv->module == NULL) {
+ manager->priv->module = load_driver (manager->priv->module_path, &nss_error);
+ }
+
+ if (manager->priv->module == NULL) {
+ g_propagate_error (error, nss_error);
+ goto out;
+ }
+
+ if (!msd_smartcard_manager_create_worker (manager, &worker_fd, &manager->priv->worker_thread)) {
+
+ g_set_error (error,
+ MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_WATCHING_FOR_EVENTS,
+ _("could not watch for incoming card events - %s"),
+ g_strerror (errno));
+
+ goto out;
+ }
+
+ io_channel = g_io_channel_unix_new (worker_fd);
+
+ channel_flags = g_io_channel_get_flags (io_channel);
+ watching_error = NULL;
+
+ source = g_io_create_watch (io_channel, G_IO_IN | G_IO_HUP);
+ g_io_channel_unref (io_channel);
+ io_channel = NULL;
+
+ manager->priv->smartcard_event_source = source;
+
+ g_source_set_callback (manager->priv->smartcard_event_source,
+ (GSourceFunc) (GIOFunc)
+ msd_smartcard_manager_check_for_and_process_events,
+ manager,
+ (GDestroyNotify)
+ msd_smartcard_manager_event_processing_stopped_handler);
+ g_source_attach (manager->priv->smartcard_event_source, NULL);
+ g_source_unref (manager->priv->smartcard_event_source);
+
+ /* populate the hash with cards that are already inserted
+ */
+ msd_smartcard_manager_get_all_cards (manager);
+
+ manager->priv->state = MSD_SMARTCARD_MANAGER_STATE_STARTED;
+
+out:
+ /* don't leave it in a half started state
+ */
+ if (manager->priv->state != MSD_SMARTCARD_MANAGER_STATE_STARTED) {
+ g_debug ("smartcard manager could not be completely started");
+ msd_smartcard_manager_stop (manager);
+ } else {
+ g_debug ("smartcard manager started");
+ }
+
+ return manager->priv->state == MSD_SMARTCARD_MANAGER_STATE_STARTED;
+}
+
+static gboolean
+msd_smartcard_manager_stop_now (MsdSmartcardManager *manager)
+{
+ if (manager->priv->state == MSD_SMARTCARD_MANAGER_STATE_STOPPED) {
+ return FALSE;
+ }
+
+ manager->priv->state = MSD_SMARTCARD_MANAGER_STATE_STOPPED;
+ msd_smartcard_manager_stop_watching_for_events (manager);
+
+ if (manager->priv->module != NULL) {
+ SECMOD_DestroyModule (manager->priv->module);
+ manager->priv->module = NULL;
+ }
+
+ if (manager->priv->nss_is_loaded) {
+ NSS_Shutdown ();
+ manager->priv->nss_is_loaded = FALSE;
+ }
+
+ g_debug ("smartcard manager stopped");
+
+ return FALSE;
+}
+
+static void
+msd_smartcard_manager_queue_stop (MsdSmartcardManager *manager)
+{
+
+ manager->priv->state = MSD_SMARTCARD_MANAGER_STATE_STOPPING;
+
+ g_idle_add ((GSourceFunc) msd_smartcard_manager_stop_now, manager);
+}
+
+void
+msd_smartcard_manager_stop (MsdSmartcardManager *manager)
+{
+ if (manager->priv->state == MSD_SMARTCARD_MANAGER_STATE_STOPPED) {
+ return;
+ }
+
+ if (manager->priv->is_unstoppable) {
+ msd_smartcard_manager_queue_stop (manager);
+ return;
+ }
+
+ msd_smartcard_manager_stop_now (manager);
+}
+
+static void
+msd_smartcard_manager_check_for_login_card (CK_SLOT_ID slot_id,
+ MsdSmartcard *card,
+ gboolean *is_inserted)
+{
+ g_assert (is_inserted != NULL);
+
+ if (msd_smartcard_is_login_card (card)) {
+ *is_inserted = TRUE;
+ }
+
+}
+
+gboolean
+msd_smartcard_manager_login_card_is_inserted (MsdSmartcardManager *manager)
+
+{
+ gboolean is_inserted;
+
+ is_inserted = FALSE;
+ g_hash_table_foreach (manager->priv->smartcards,
+ (GHFunc)
+ msd_smartcard_manager_check_for_login_card,
+ &is_inserted);
+ return is_inserted;
+}
+
+static MsdSmartcardManagerWorker *
+msd_smartcard_manager_worker_new (int write_fd)
+{
+ MsdSmartcardManagerWorker *worker;
+
+ worker = g_slice_new0 (MsdSmartcardManagerWorker);
+ worker->write_fd = write_fd;
+ worker->module = NULL;
+
+ worker->smartcards =
+ g_hash_table_new_full ((GHashFunc) slot_id_hash,
+ (GEqualFunc) slot_id_equal,
+ (GDestroyNotify) g_free,
+ (GDestroyNotify) g_object_unref);
+
+ return worker;
+}
+
+static void
+msd_smartcard_manager_worker_free (MsdSmartcardManagerWorker *worker)
+{
+ if (worker->smartcards != NULL) {
+ g_hash_table_destroy (worker->smartcards);
+ worker->smartcards = NULL;
+ }
+
+ g_slice_free (MsdSmartcardManagerWorker, worker);
+}
+
+static gboolean
+read_bytes (int fd,
+ gpointer bytes,
+ gsize num_bytes)
+{
+ size_t bytes_left;
+ size_t total_bytes_read;
+ ssize_t bytes_read;
+
+ bytes_left = (size_t) num_bytes;
+ total_bytes_read = 0;
+
+ do {
+ bytes_read = read (fd,
+ (char *) bytes + total_bytes_read,
+ bytes_left);
+ g_assert (bytes_read <= (ssize_t) bytes_left);
+
+ if (bytes_read <= 0) {
+ if ((bytes_read < 0) && (errno == EINTR || errno == EAGAIN)) {
+ continue;
+ }
+
+ bytes_left = 0;
+ } else {
+ bytes_left -= bytes_read;
+ total_bytes_read += bytes_read;
+ }
+ } while (bytes_left > 0);
+
+ if (total_bytes_read < (size_t) num_bytes) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+write_bytes (int fd,
+ gconstpointer bytes,
+ gsize num_bytes)
+{
+ size_t bytes_left;
+ size_t total_bytes_written;
+ ssize_t bytes_written;
+
+ bytes_left = (size_t) num_bytes;
+ total_bytes_written = 0;
+
+ do {
+ bytes_written = write (fd,
+ (char *) bytes + total_bytes_written,
+ bytes_left);
+ g_assert (bytes_written <= (ssize_t) bytes_left);
+
+ if (bytes_written <= 0) {
+ if ((bytes_written < 0) && (errno == EINTR || errno == EAGAIN)) {
+ continue;
+ }
+
+ bytes_left = 0;
+ } else {
+ bytes_left -= bytes_written;
+ total_bytes_written += bytes_written;
+ }
+ } while (bytes_left > 0);
+
+ if (total_bytes_written < (size_t) num_bytes) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static MsdSmartcard *
+read_smartcard (int fd,
+ SECMODModule *module)
+{
+ MsdSmartcard *card;
+ char *card_name;
+ gsize card_name_size;
+
+ card_name_size = 0;
+ if (!read_bytes (fd, &card_name_size, sizeof (card_name_size))) {
+ return NULL;
+ }
+
+ card_name = g_slice_alloc0 (card_name_size);
+ if (!read_bytes (fd, card_name, card_name_size)) {
+ g_slice_free1 (card_name_size, card_name);
+ return NULL;
+ }
+ card = _msd_smartcard_new_from_name (module, card_name);
+ g_slice_free1 (card_name_size, card_name);
+
+ return card;
+}
+
+static gboolean
+write_smartcard (int fd,
+ MsdSmartcard *card)
+{
+ gsize card_name_size;
+ char *card_name;
+
+ card_name = msd_smartcard_get_name (card);
+ card_name_size = strlen (card_name) + 1;
+
+ if (!write_bytes (fd, &card_name_size, sizeof (card_name_size))) {
+ g_free (card_name);
+ return FALSE;
+ }
+
+ if (!write_bytes (fd, card_name, card_name_size)) {
+ g_free (card_name);
+ return FALSE;
+ }
+ g_free (card_name);
+
+ return TRUE;
+}
+
+static gboolean
+msd_smartcard_manager_worker_emit_smartcard_removed (MsdSmartcardManagerWorker *worker,
+ MsdSmartcard *card,
+ GError **error)
+{
+ g_debug ("card '%s' removed!", msd_smartcard_get_name (card));
+
+ if (!write_bytes (worker->write_fd, "R", 1)) {
+ goto error_out;
+ }
+
+ if (!write_smartcard (worker->write_fd, card)) {
+ goto error_out;
+ }
+
+ return TRUE;
+
+error_out:
+ g_set_error (error, MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_REPORTING_EVENTS,
+ "%s", g_strerror (errno));
+ return FALSE;
+}
+
+static gboolean
+msd_smartcard_manager_worker_emit_smartcard_inserted (MsdSmartcardManagerWorker *worker,
+ MsdSmartcard *card,
+ GError **error)
+{
+ GError *write_error;
+
+ write_error = NULL;
+ g_debug ("card '%s' inserted!", msd_smartcard_get_name (card));
+ if (!write_bytes (worker->write_fd, "I", 1)) {
+ goto error_out;
+ }
+
+ if (!write_smartcard (worker->write_fd, card)) {
+ goto error_out;
+ }
+
+ return TRUE;
+
+error_out:
+ g_set_error (error, MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_REPORTING_EVENTS,
+ "%s", g_strerror (errno));
+ return FALSE;
+}
+
+static gboolean
+msd_smartcard_manager_worker_watch_for_and_process_event (MsdSmartcardManagerWorker *worker,
+ GError **error)
+{
+ PK11SlotInfo *slot;
+ CK_SLOT_ID slot_id, *key;
+ int slot_series, card_slot_series;
+ MsdSmartcard *card;
+ GError *processing_error;
+ gboolean ret;
+
+ g_debug ("waiting for card event");
+ ret = FALSE;
+
+ slot = SECMOD_WaitForAnyTokenEvent (worker->module, 0, PR_SecondsToInterval (1));
+ processing_error = NULL;
+
+ if (slot == NULL) {
+ int error_code;
+
+ error_code = PORT_GetError ();
+ if ((error_code == 0) || (error_code == SEC_ERROR_NO_EVENT)) {
+ g_debug ("spurrious event occurred");
+ return TRUE;
+ }
+
+ /* FIXME: is there a function to convert from a PORT error
+ * code to a translated string?
+ */
+ g_set_error (error, MSD_SMARTCARD_MANAGER_ERROR,
+ MSD_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+ _("encountered unexpected error while "
+ "waiting for smartcard events"));
+ goto out;
+ }
+
+ /* the slot id and series together uniquely identify a card.
+ * You can never have two cards with the same slot id at the
+ * same time, however (I think), so we can key off of it.
+ */
+ slot_id = PK11_GetSlotID (slot);
+ slot_series = PK11_GetSlotSeries (slot);
+
+ /* First check to see if there is a card that we're currently
+ * tracking in the slot.
+ */
+ key = g_new (CK_SLOT_ID, 1);
+ *key = slot_id;
+ card = g_hash_table_lookup (worker->smartcards, key);
+
+ if (card != NULL) {
+ card_slot_series = msd_smartcard_get_slot_series (card);
+ } else {
+ card_slot_series = -1;
+ }
+
+ if (PK11_IsPresent (slot)) {
+ /* Now, check to see if their is a new card in the slot.
+ * If there was a different card in the slot now than
+ * there was before, then we need to emit a removed signal
+ * for the old card (we don't want unpaired insertion events).
+ */
+ if ((card != NULL) &&
+ card_slot_series != slot_series) {
+ if (!msd_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+ g_propagate_error (error, processing_error);
+ goto out;
+ }
+ }
+
+ card = _msd_smartcard_new (worker->module,
+ slot_id, slot_series);
+
+ g_hash_table_replace (worker->smartcards,
+ key, card);
+ key = NULL;
+
+ if (!msd_smartcard_manager_worker_emit_smartcard_inserted (worker,
+ card,
+ &processing_error)) {
+ g_propagate_error (error, processing_error);
+ goto out;
+ }
+ } else {
+ /* if we aren't tracking the card, just discard the event.
+ * We don't want unpaired remove events. Note on startup
+ * NSS will generate an "insertion" event if a card is
+ * already inserted in the slot.
+ */
+ if ((card != NULL)) {
+ /* FIXME: i'm not sure about this code. Maybe we
+ * shouldn't do this at all, or maybe we should do it
+ * n times (where n = slot_series - card_slot_series + 1)
+ *
+ * Right now, i'm just doing it once.
+ */
+ if ((slot_series - card_slot_series) > 1) {
+
+ if (!msd_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+ g_propagate_error (error, processing_error);
+ goto out;
+ }
+ g_hash_table_remove (worker->smartcards, key);
+
+ card = _msd_smartcard_new (worker->module,
+ slot_id, slot_series);
+ g_hash_table_replace (worker->smartcards,
+ key, card);
+ key = NULL;
+ if (!msd_smartcard_manager_worker_emit_smartcard_inserted (worker, card, &processing_error)) {
+ g_propagate_error (error, processing_error);
+ goto out;
+ }
+ }
+
+ if (!msd_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+ g_propagate_error (error, processing_error);
+ goto out;
+ }
+
+ g_hash_table_remove (worker->smartcards, key);
+ card = NULL;
+ } else {
+ g_debug ("got spurious remove event");
+ }
+ }
+
+ ret = TRUE;
+
+out:
+ g_free (key);
+ PK11_FreeSlot (slot);
+
+ return ret;
+}
+
+static void
+msd_smartcard_manager_worker_run (MsdSmartcardManagerWorker *worker)
+{
+ GError *error;
+
+
+ error = NULL;
+
+ while (msd_smartcard_manager_worker_watch_for_and_process_event (worker, &error));
+
+ if (error != NULL) {
+ g_debug ("could not process card event - %s", error->message);
+ g_error_free (error);
+ }
+
+ msd_smartcard_manager_worker_free (worker);
+}
+
+static gboolean
+msd_smartcard_manager_create_worker (MsdSmartcardManager *manager,
+ int *worker_fd,
+ GThread **worker_thread)
+{
+ MsdSmartcardManagerWorker *worker;
+ int write_fd, read_fd;
+
+ write_fd = -1;
+ read_fd = -1;
+ if (!open_pipe (&write_fd, &read_fd)) {
+ return FALSE;
+ }
+
+ worker = msd_smartcard_manager_worker_new (write_fd);
+ worker->module = manager->priv->module;
+
+ *worker_thread = g_thread_create ((GThreadFunc)
+ msd_smartcard_manager_worker_run,
+ worker, FALSE, NULL);
+
+ if (*worker_thread == NULL) {
+ msd_smartcard_manager_worker_free (worker);
+ return FALSE;
+ }
+
+ if (worker_fd) {
+ *worker_fd = read_fd;
+ }
+
+ return TRUE;
+}
+
+#ifdef MSD_SMARTCARD_MANAGER_ENABLE_TEST
+#include <glib.h>
+
+static GMainLoop *event_loop;
+static gboolean should_exit_on_next_remove = FALSE;
+
+static gboolean
+on_timeout (MsdSmartcardManager *manager)
+{
+ GError *error;
+ g_print ("Re-enabling manager.\n");
+
+ if (!msd_smartcard_manager_start (manager, &error)) {
+ g_warning ("could not start smartcard manager - %s",
+ error->message);
+ g_error_free (error);
+ return 1;
+ }
+ g_print ("Please re-insert smartcard\n");
+
+ should_exit_on_next_remove = TRUE;
+
+ return FALSE;
+}
+
+static void
+on_device_inserted (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ g_print ("smartcard inserted!\n");
+ g_print ("Please remove it.\n");
+}
+
+static void
+on_device_removed (MsdSmartcardManager *manager,
+ MsdSmartcard *card)
+{
+ g_print ("smartcard removed!\n");
+
+ if (should_exit_on_next_remove) {
+ g_main_loop_quit (event_loop);
+ } else {
+ g_print ("disabling manager for 2 seconds\n");
+ msd_smartcard_manager_stop (manager);
+ g_timeout_add (2000, (GSourceFunc) on_timeout, manager);
+ }
+}
+
+int
+main (int argc,
+ char *argv[])
+{
+ MsdSmartcardManager *manager;
+ GError *error;
+
+ g_log_set_always_fatal (G_LOG_LEVEL_ERROR
+ | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING);
+
+ g_type_init ();
+
+ g_message ("creating instance of 'smartcard manager' object...");
+ manager = msd_smartcard_manager_new (NULL);
+ g_message ("'smartcard manager' object created successfully");
+
+ g_signal_connect (manager, "smartcard-inserted",
+ G_CALLBACK (on_device_inserted), NULL);
+
+ g_signal_connect (manager, "smartcard-removed",
+ G_CALLBACK (on_device_removed), NULL);
+
+ g_message ("starting listener...");
+
+ error = NULL;
+ if (!msd_smartcard_manager_start (manager, &error)) {
+ g_warning ("could not start smartcard manager - %s",
+ error->message);
+ g_error_free (error);
+ return 1;
+ }
+
+ event_loop = g_main_loop_new (NULL, FALSE);
+ g_main_loop_run (event_loop);
+ g_main_loop_unref (event_loop);
+ event_loop = NULL;
+
+ g_message ("destroying previously created 'smartcard manager' object...");
+ g_object_unref (manager);
+ manager = NULL;
+ g_message ("'smartcard manager' object destroyed successfully");
+
+ return 0;
+}
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 23:09:43 +0000