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-rw-r--r--plugins/supplicant.c259
1 files changed, 195 insertions, 64 deletions
diff --git a/plugins/supplicant.c b/plugins/supplicant.c
index bc83be9f..23acd086 100644
--- a/plugins/supplicant.c
+++ b/plugins/supplicant.c
@@ -47,15 +47,101 @@
#define SUPPLICANT_INTF "fi.epitest.hostap.WPASupplicant"
#define SUPPLICANT_PATH "/fi/epitest/hostap/WPASupplicant"
+/* Taken from "WPA Supplicant - Common definitions" */
enum supplicant_state {
- STATE_INACTIVE,
- STATE_SCANNING,
- STATE_ASSOCIATING,
- STATE_ASSOCIATED,
- STATE_4WAY_HANDSHAKE,
- STATE_GROUP_HANDSHAKE,
- STATE_COMPLETED,
- STATE_DISCONNECTED,
+ /**
+ * WPA_DISCONNECTED - Disconnected state
+ *
+ * This state indicates that client is not associated, but is likely to
+ * start looking for an access point. This state is entered when a
+ * connection is lost.
+ */
+ WPA_DISCONNECTED,
+
+ /**
+ * WPA_INACTIVE - Inactive state (wpa_supplicant disabled)
+ *
+ * This state is entered if there are no enabled networks in the
+ * configuration. wpa_supplicant is not trying to associate with a new
+ * network and external interaction (e.g., ctrl_iface call to add or
+ * enable a network) is needed to start association.
+ */
+ WPA_INACTIVE,
+
+ /**
+ * WPA_SCANNING - Scanning for a network
+ *
+ * This state is entered when wpa_supplicant starts scanning for a
+ * network.
+ */
+ WPA_SCANNING,
+
+ /**
+ * WPA_ASSOCIATING - Trying to associate with a BSS/SSID
+ *
+ * This state is entered when wpa_supplicant has found a suitable BSS
+ * to associate with and the driver is configured to try to associate
+ * with this BSS in ap_scan=1 mode. When using ap_scan=2 mode, this
+ * state is entered when the driver is configured to try to associate
+ * with a network using the configured SSID and security policy.
+ */
+ WPA_ASSOCIATING,
+
+ /**
+ * WPA_ASSOCIATED - Association completed
+ *
+ * This state is entered when the driver reports that association has
+ * been successfully completed with an AP. If IEEE 802.1X is used
+ * (with or without WPA/WPA2), wpa_supplicant remains in this state
+ * until the IEEE 802.1X/EAPOL authentication has been completed.
+ */
+ WPA_ASSOCIATED,
+
+ /**
+ * WPA_4WAY_HANDSHAKE - WPA 4-Way Key Handshake in progress
+ *
+ * This state is entered when WPA/WPA2 4-Way Handshake is started. In
+ * case of WPA-PSK, this happens when receiving the first EAPOL-Key
+ * frame after association. In case of WPA-EAP, this state is entered
+ * when the IEEE 802.1X/EAPOL authentication has been completed.
+ */
+ WPA_4WAY_HANDSHAKE,
+
+ /**
+ * WPA_GROUP_HANDSHAKE - WPA Group Key Handshake in progress
+ *
+ * This state is entered when 4-Way Key Handshake has been completed
+ * (i.e., when the supplicant sends out message 4/4) and when Group
+ * Key rekeying is started by the AP (i.e., when supplicant receives
+ * message 1/2).
+ */
+ WPA_GROUP_HANDSHAKE,
+
+ /**
+ * WPA_COMPLETED - All authentication completed
+ *
+ * This state is entered when the full authentication process is
+ * completed. In case of WPA2, this happens when the 4-Way Handshake is
+ * successfully completed. With WPA, this state is entered after the
+ * Group Key Handshake; with IEEE 802.1X (non-WPA) connection is
+ * completed after dynamic keys are received (or if not used, after
+ * the EAP authentication has been completed). With static WEP keys and
+ * plaintext connections, this state is entered when an association
+ * has been completed.
+ *
+ * This state indicates that the supplicant has completed its
+ * processing for the association phase and that data connection is
+ * fully configured.
+ */
+ WPA_COMPLETED,
+
+ /**
+ * WPA_INVALID - Invalid state (parsing error)
+ *
+ * This state is returned if the string input is invalid. It is not
+ * an official wpa_supplicant state.
+ */
+ WPA_INVALID,
};
struct supplicant_result {
@@ -82,7 +168,7 @@ struct supplicant_task {
char *netpath;
gboolean created;
enum supplicant_state state;
- gboolean doscan;
+ gboolean noscan;
GSList *scan_results;
};
@@ -750,7 +836,7 @@ static void extract_capabilites(DBusMessageIter *value,
result->has_wep = TRUE;
}
-static int get_properties(struct supplicant_task *task);
+static void get_properties(struct supplicant_task *task);
static void properties_reply(DBusPendingCall *call, void *user_data)
{
@@ -771,6 +857,12 @@ static void properties_reply(DBusPendingCall *call, void *user_data)
return;
}
+ if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
+ dbus_message_unref(reply);
+ get_properties(task);
+ return;
+ }
+
memset(&result, 0, sizeof(result));
dbus_message_iter_init(reply, &array);
@@ -899,18 +991,15 @@ done:
get_properties(task);
}
-static int get_properties(struct supplicant_task *task)
+static void get_properties(struct supplicant_task *task)
{
DBusMessage *message;
DBusPendingCall *call;
char *path;
path = g_slist_nth_data(task->scan_results, 0);
- if (path == NULL) {
- if (task->doscan == FALSE)
- connman_device_set_scanning(task->device, FALSE);
- return 0;
- }
+ if (path == NULL)
+ goto noscan;
message = dbus_message_new_method_call(SUPPLICANT_NAME, path,
SUPPLICANT_INTF ".BSSID",
@@ -920,20 +1009,24 @@ static int get_properties(struct supplicant_task *task)
g_free(path);
if (message == NULL)
- return -ENOMEM;
+ goto noscan;
if (dbus_connection_send_with_reply(connection, message,
&call, TIMEOUT) == FALSE) {
connman_error("Failed to get network properties");
dbus_message_unref(message);
- return -EIO;
+ goto noscan;
}
dbus_pending_call_set_notify(call, properties_reply, task, NULL);
dbus_message_unref(message);
- return 0;
+ return;
+
+noscan:
+ if (task->noscan == FALSE)
+ connman_device_set_scanning(task->device, FALSE);
}
static void scan_results_reply(DBusPendingCall *call, void *user_data)
@@ -947,11 +1040,11 @@ static void scan_results_reply(DBusPendingCall *call, void *user_data)
DBG("task %p", task);
reply = dbus_pending_call_steal_reply(call);
- if (reply == NULL) {
- if (task->doscan == FALSE)
- connman_device_set_scanning(task->device, FALSE);
- return;
- }
+ if (reply == NULL)
+ goto noscan;
+
+ if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
+ goto done;
dbus_error_init(&error);
@@ -964,11 +1057,12 @@ static void scan_results_reply(DBusPendingCall *call, void *user_data)
dbus_error_free(&error);
} else
connman_error("Wrong arguments for scan result");
- if (task->doscan == FALSE)
- connman_device_set_scanning(task->device, FALSE);
goto done;
}
+ if (num_results == 0)
+ goto done;
+
for (i = 0; i < num_results; i++) {
char *path = g_strdup(results[i]);
if (path == NULL)
@@ -979,13 +1073,21 @@ static void scan_results_reply(DBusPendingCall *call, void *user_data)
g_strfreev(results);
+ dbus_message_unref(reply);
+
get_properties(task);
+ return;
+
done:
dbus_message_unref(reply);
+
+noscan:
+ if (task->noscan == FALSE)
+ connman_device_set_scanning(task->device, FALSE);
}
-static int scan_results_available(struct supplicant_task *task)
+static void scan_results_available(struct supplicant_task *task)
{
DBusMessage *message;
DBusPendingCall *call;
@@ -996,33 +1098,55 @@ static int scan_results_available(struct supplicant_task *task)
SUPPLICANT_INTF ".Interface",
"scanResults");
if (message == NULL)
- return -ENOMEM;
+ return;
if (dbus_connection_send_with_reply(connection, message,
&call, TIMEOUT) == FALSE) {
connman_error("Failed to request scan result");
- dbus_message_unref(message);
- return -EIO;
+ goto done;
}
- connman_device_set_scanning(task->device, TRUE);
+ if (task->noscan == FALSE)
+ connman_device_set_scanning(task->device, TRUE);
dbus_pending_call_set_notify(call, scan_results_reply, task, NULL);
+done:
dbus_message_unref(message);
+}
- return 0;
+static enum supplicant_state string2state(const char *state)
+{
+ if (g_str_equal(state, "INACTIVE") == TRUE)
+ return WPA_INACTIVE;
+ else if (g_str_equal(state, "SCANNING") == TRUE)
+ return WPA_SCANNING;
+ else if (g_str_equal(state, "ASSOCIATING") == TRUE)
+ return WPA_ASSOCIATING;
+ else if (g_str_equal(state, "ASSOCIATED") == TRUE)
+ return WPA_ASSOCIATED;
+ else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
+ return WPA_GROUP_HANDSHAKE;
+ else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
+ return WPA_4WAY_HANDSHAKE;
+ else if (g_str_equal(state, "COMPLETED") == TRUE)
+ return WPA_COMPLETED;
+ else if (g_str_equal(state, "DISCONNECTED") == TRUE)
+ return WPA_DISCONNECTED;
+ else
+ return WPA_INVALID;
}
static void state_change(struct supplicant_task *task, DBusMessage *msg)
{
DBusError error;
- const char *state, *previous;
+ const char *newstate, *oldstate;
+ enum supplicant_state state;
dbus_error_init(&error);
- if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &state,
- DBUS_TYPE_STRING, &previous,
+ if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &newstate,
+ DBUS_TYPE_STRING, &oldstate,
DBUS_TYPE_INVALID) == FALSE) {
if (dbus_error_is_set(&error) == TRUE) {
connman_error("%s", error.message);
@@ -1032,44 +1156,50 @@ static void state_change(struct supplicant_task *task, DBusMessage *msg)
return;
}
- DBG("state %s ==> %s", previous, state);
+ DBG("state %s ==> %s", oldstate, newstate);
- if (g_str_equal(state, "INACTIVE") == TRUE)
- task->state = STATE_INACTIVE;
- else if (g_str_equal(state, "SCANNING") == TRUE)
- task->state = STATE_SCANNING;
- else if (g_str_equal(state, "ASSOCIATING") == TRUE)
- task->state = STATE_ASSOCIATING;
- else if (g_str_equal(state, "ASSOCIATED") == TRUE)
- task->state = STATE_ASSOCIATED;
- else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
- task->state = STATE_GROUP_HANDSHAKE;
- else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
- task->state = STATE_4WAY_HANDSHAKE;
- else if (g_str_equal(state, "COMPLETED") == TRUE)
- task->state = STATE_COMPLETED;
- else if (g_str_equal(state, "DISCONNECTED") == TRUE)
- task->state = STATE_DISCONNECTED;
+ state = string2state(newstate);
+ if (state == WPA_INVALID)
+ return;
+
+ task->state = state;
- if (task->state == STATE_SCANNING) {
- task->doscan = TRUE;
+ switch (task->state) {
+ case WPA_SCANNING:
+ task->noscan = TRUE;
connman_device_set_scanning(task->device, TRUE);
- } else if (task->state == STATE_INACTIVE) {
- task->doscan = FALSE;
+ break;
+ case WPA_ASSOCIATING:
+ case WPA_ASSOCIATED:
+ case WPA_4WAY_HANDSHAKE:
+ case WPA_GROUP_HANDSHAKE:
+ task->noscan = TRUE;
+ break;
+ case WPA_COMPLETED:
+ case WPA_DISCONNECTED:
+ task->noscan = FALSE;
+ break;
+ case WPA_INACTIVE:
+ task->noscan = FALSE;
connman_device_set_scanning(task->device, FALSE);
+ break;
+ case WPA_INVALID:
+ break;
}
if (task->network == NULL)
return;
switch (task->state) {
- case STATE_COMPLETED:
+ case WPA_COMPLETED:
/* carrier on */
connman_network_set_connected(task->network, TRUE);
+ connman_device_set_scanning(task->device, FALSE);
break;
- case STATE_DISCONNECTED:
+ case WPA_DISCONNECTED:
/* carrier off */
connman_network_set_connected(task->network, FALSE);
+ connman_device_set_scanning(task->device, FALSE);
break;
default:
break;
@@ -1128,7 +1258,8 @@ int supplicant_start(struct connman_device *device)
}
task->created = FALSE;
- task->state = STATE_INACTIVE;
+ task->noscan = FALSE;
+ task->state = WPA_INVALID;
task_list = g_slist_append(task_list, task);
@@ -1168,12 +1299,12 @@ int supplicant_scan(struct connman_device *device)
return -ENODEV;
switch (task->state) {
- case STATE_SCANNING:
+ case WPA_SCANNING:
return -EALREADY;
- case STATE_ASSOCIATING:
- case STATE_ASSOCIATED:
- case STATE_4WAY_HANDSHAKE:
- case STATE_GROUP_HANDSHAKE:
+ case WPA_ASSOCIATING:
+ case WPA_ASSOCIATED:
+ case WPA_4WAY_HANDSHAKE:
+ case WPA_GROUP_HANDSHAKE:
return -EBUSY;
default:
break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 13:31:45 +0000