X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=plugins%2Fwifi.c;h=3e4899950af603cd32e288294ff11184679b288a;hb=c223c7fbca163f55eabe75af145c513137593eb5;hp=f9c15b4c95a9c207070d37ba8d6e1204b48dc5bb;hpb=52efb07a99e5bdebea00013e1825a22dc28f98c4;p=framework%2Fconnectivity%2Fconnman.git

diff --git a/plugins/wifi.c b/plugins/wifi.c
index f9c15b4..3e48999 100644
--- a/plugins/wifi.c
+++ b/plugins/wifi.c
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -59,15 +59,16 @@
 #define MAXIMUM_RETRIES   4
 
 #define BGSCAN_DEFAULT "simple:30:-45:300"
-#define AUTOSCAN_DEFAULT "exponential:2:3600"
+#define AUTOSCAN_DEFAULT "exponential:3:300"
 
-struct connman_technology *wifi_technology = NULL;
+static struct connman_technology *wifi_technology = NULL;
 
 struct hidden_params {
 	char ssid[32];
 	unsigned int ssid_len;
 	char *identity;
 	char *passphrase;
+	gpointer user_data;
 };
 
 /**
@@ -107,6 +108,8 @@ struct wifi_data {
 
 static GList *iface_list = NULL;
 
+static void start_autoscan(struct connman_device *device);
+
 static void handle_tethering(struct wifi_data *wifi)
 {
 	if (wifi->tethering == FALSE)
@@ -202,7 +205,7 @@ static void remove_networks(struct connman_device *device,
 	wifi->networks = NULL;
 }
 
-static void stop_autoscan(struct connman_device *device)
+static void reset_autoscan(struct connman_device *device)
 {
 	struct wifi_data *wifi = connman_device_get_data(device);
 	struct autoscan_params *autoscan;
@@ -214,8 +217,10 @@ static void stop_autoscan(struct connman_device *device)
 
 	autoscan = wifi->autoscan;
 
-	if (autoscan->timeout > 0)
-		g_source_remove(autoscan->timeout);
+	if (autoscan->timeout == 0 && autoscan->interval == 0)
+		return;
+
+	g_source_remove(autoscan->timeout);
 
 	autoscan->timeout = 0;
 	autoscan->interval = 0;
@@ -223,6 +228,13 @@ static void stop_autoscan(struct connman_device *device)
 	connman_device_unref(device);
 }
 
+static void stop_autoscan(struct connman_device *device)
+{
+	reset_autoscan(device);
+
+	connman_device_set_scanning(device, FALSE);
+}
+
 static void wifi_remove(struct connman_device *device)
 {
 	struct wifi_data *wifi = connman_device_get_data(device);
@@ -232,8 +244,6 @@ static void wifi_remove(struct connman_device *device)
 	if (wifi == NULL)
 		return;
 
-	stop_autoscan(device);
-
 	iface_list = g_list_remove(iface_list, wifi);
 
 	remove_networks(device, wifi);
@@ -250,6 +260,142 @@ static void wifi_remove(struct connman_device *device)
 	g_free(wifi);
 }
 
+static int add_scan_param(gchar *hex_ssid, int freq,
+			GSupplicantScanParams *scan_data,
+			int driver_max_scan_ssids)
+{
+	unsigned int i;
+	struct scan_ssid *scan_ssid;
+
+	if (driver_max_scan_ssids > scan_data->num_ssids && hex_ssid != NULL) {
+		gchar *ssid;
+		unsigned int j = 0, hex;
+		size_t hex_ssid_len = strlen(hex_ssid);
+
+		ssid = g_try_malloc0(hex_ssid_len / 2);
+		if (ssid == NULL)
+			return -ENOMEM;
+
+		for (i = 0; i < hex_ssid_len; i += 2) {
+			sscanf(hex_ssid + i, "%02x", &hex);
+			ssid[j++] = hex;
+		}
+
+		scan_ssid = g_try_new(struct scan_ssid, 1);
+		if (scan_ssid == NULL) {
+			g_free(ssid);
+			return -ENOMEM;
+		}
+
+		memcpy(scan_ssid->ssid, ssid, j);
+		scan_ssid->ssid_len = j;
+		scan_data->ssids = g_slist_prepend(scan_data->ssids,
+								scan_ssid);
+
+		scan_data->num_ssids++;
+
+		g_free(ssid);
+	} else
+		return -EINVAL;
+
+	scan_data->ssids = g_slist_reverse(scan_data->ssids);
+
+	if (scan_data->freqs == NULL) {
+		scan_data->freqs = g_try_malloc0(sizeof(uint16_t) *
+						scan_data->num_ssids);
+		if (scan_data->freqs == NULL) {
+			g_slist_free_full(scan_data->ssids, g_free);
+			return -ENOMEM;
+		}
+	} else {
+		scan_data->freqs = g_try_realloc(scan_data->freqs,
+				sizeof(uint16_t) * scan_data->num_ssids);
+		if (scan_data->freqs == NULL) {
+			g_slist_free_full(scan_data->ssids, g_free);
+			return -ENOMEM;
+		}
+		scan_data->freqs[scan_data->num_ssids - 1] = 0;
+	}
+
+	/* Don't add duplicate entries */
+	for (i = 0; i < scan_data->num_ssids; i++) {
+		if (scan_data->freqs[i] == 0) {
+			scan_data->freqs[i] = freq;
+			break;
+		} else if (scan_data->freqs[i] == freq)
+			break;
+	}
+
+	return 0;
+}
+
+static int get_hidden_connections(int max_ssids,
+				GSupplicantScanParams *scan_data)
+{
+	GKeyFile *keyfile;
+	gchar **services;
+	char *ssid;
+	gchar *str;
+	int i, freq;
+	gboolean value;
+	int num_ssids = 0, add_param_failed = 0;
+
+	services = connman_storage_get_services();
+	for (i = 0; services && services[i]; i++) {
+		if (strncmp(services[i], "wifi_", 5) != 0)
+			continue;
+
+		keyfile = connman_storage_load_service(services[i]);
+
+		value = g_key_file_get_boolean(keyfile,
+					services[i], "Hidden", NULL);
+		if (value == FALSE) {
+			g_key_file_free(keyfile);
+			continue;
+		}
+
+		value = g_key_file_get_boolean(keyfile,
+					services[i], "Favorite", NULL);
+		if (value == FALSE) {
+			g_key_file_free(keyfile);
+			continue;
+		}
+
+		value = g_key_file_get_boolean(keyfile,
+					services[i], "AutoConnect", NULL);
+		if (value == FALSE) {
+			g_key_file_free(keyfile);
+			continue;
+		}
+
+		ssid = g_key_file_get_string(keyfile,
+					services[i], "SSID", NULL);
+
+		freq = g_key_file_get_integer(keyfile, services[i],
+					"Frequency", NULL);
+
+		if (add_scan_param(ssid, freq, scan_data, max_ssids) < 0) {
+			str = g_key_file_get_string(keyfile,
+					services[i], "Name", NULL);
+			DBG("Cannot scan %s (%s)", ssid, str);
+			g_free(str);
+			add_param_failed++;
+		}
+
+		num_ssids++;
+
+		g_key_file_free(keyfile);
+	}
+
+	if (add_param_failed > 0)
+		connman_warn("Unable to scan %d out of %d SSIDs (max is %d)",
+			add_param_failed, num_ssids, max_ssids);
+
+	g_strfreev(services);
+
+	return num_ssids > max_ssids ? max_ssids : num_ssids;
+}
+
 static int throw_wifi_scan(struct connman_device *device,
 			GSupplicantInterfaceCallback callback)
 {
@@ -261,6 +407,9 @@ static int throw_wifi_scan(struct connman_device *device,
 	if (wifi->tethering == TRUE)
 		return 0;
 
+	if (connman_device_get_scanning(device) == TRUE)
+		return -EALREADY;
+
 	connman_device_ref(device);
 
 	ret = g_supplicant_interface_scan(wifi->interface, NULL,
@@ -273,14 +422,77 @@ static int throw_wifi_scan(struct connman_device *device,
 	return ret;
 }
 
-static void autoscan_scan_callback(int result,
-			GSupplicantInterface *interface, void *user_data)
+static void hidden_free(struct hidden_params *hidden)
+{
+	if (hidden == NULL)
+		return;
+
+	g_free(hidden->identity);
+	g_free(hidden->passphrase);
+	g_free(hidden);
+}
+
+static void scan_callback(int result, GSupplicantInterface *interface,
+						void *user_data)
 {
 	struct connman_device *device = user_data;
+	struct wifi_data *wifi = connman_device_get_data(device);
 
-	DBG("");
+	DBG("result %d", result);
+
+	if (wifi != NULL && wifi->hidden != NULL) {
+		connman_network_clear_hidden(wifi->hidden->user_data);
+		hidden_free(wifi->hidden);
+		wifi->hidden = NULL;
+	}
+
+	if (result < 0)
+		connman_device_reset_scanning(device);
 
 	connman_device_set_scanning(device, FALSE);
+	start_autoscan(device);
+	connman_device_unref(device);
+}
+
+static void scan_callback_hidden(int result,
+			GSupplicantInterface *interface, void *user_data)
+{
+	struct connman_device *device = user_data;
+	struct wifi_data *wifi = connman_device_get_data(device);
+	int driver_max_ssids;
+
+	DBG("result %d", result);
+
+	/*
+	 * Scan hidden networks so that we can autoconnect to them.
+	 */
+	driver_max_ssids = g_supplicant_interface_get_max_scan_ssids(
+							wifi->interface);
+	DBG("max ssids %d", driver_max_ssids);
+
+	if (driver_max_ssids > 0) {
+		GSupplicantScanParams *scan_params;
+		int ret;
+
+		scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
+		if (scan_params == NULL)
+			goto out;
+
+		if (get_hidden_connections(driver_max_ssids,
+						scan_params) > 0) {
+			ret = g_supplicant_interface_scan(wifi->interface,
+							scan_params,
+							scan_callback,
+							device);
+			if (ret == 0)
+				return;
+		}
+
+		g_supplicant_free_scan_params(scan_params);
+	}
+
+out:
+	scan_callback(result, interface, user_data);
 }
 
 static gboolean autoscan_timeout(gpointer data)
@@ -301,7 +513,7 @@ static gboolean autoscan_timeout(gpointer data)
 	if (autoscan->interval >= autoscan->limit)
 		interval = autoscan->limit;
 
-	throw_wifi_scan(wifi->device, autoscan_scan_callback);
+	throw_wifi_scan(wifi->device, scan_callback_hidden);
 
 set_interval:
 	DBG("interval %d", interval);
@@ -446,6 +658,14 @@ static int wifi_disable(struct connman_device *device)
 	if (wifi->pending_network != NULL)
 		wifi->pending_network = NULL;
 
+	stop_autoscan(device);
+
+	/* In case of a user scan, device is still referenced */
+	if (connman_device_get_scanning(device) == TRUE) {
+		connman_device_set_scanning(device, FALSE);
+		connman_device_unref(wifi->device);
+	}
+
 	remove_networks(device, wifi);
 
 	ret = g_supplicant_interface_remove(wifi->interface, NULL, NULL);
@@ -455,77 +675,6 @@ static int wifi_disable(struct connman_device *device)
 	return -EINPROGRESS;
 }
 
-static void hidden_free(struct hidden_params *hidden)
-{
-	if (hidden == NULL)
-		return;
-
-	g_free(hidden->identity);
-	g_free(hidden->passphrase);
-	g_free(hidden);
-}
-
-static void scan_callback(int result, GSupplicantInterface *interface,
-						void *user_data)
-{
-	struct connman_device *device = user_data;
-	struct wifi_data *wifi = connman_device_get_data(device);
-
-	DBG("result %d", result);
-
-	if (wifi != NULL && wifi->hidden != NULL) {
-		hidden_free(wifi->hidden);
-		wifi->hidden = NULL;
-	}
-
-	if (result < 0)
-		connman_device_reset_scanning(device);
-
-	connman_device_set_scanning(device, FALSE);
-	connman_device_unref(device);
-
-	start_autoscan(device);
-}
-
-static int add_scan_param(gchar *hex_ssid, int freq,
-			GSupplicantScanParams *scan_data,
-			int driver_max_scan_ssids)
-{
-	unsigned int i;
-
-	if (driver_max_scan_ssids > scan_data->num_ssids && hex_ssid != NULL) {
-		gchar *ssid;
-		unsigned int j = 0, hex;
-		size_t hex_ssid_len = strlen(hex_ssid);
-
-		ssid = g_try_malloc0(hex_ssid_len / 2);
-		if (ssid == NULL)
-			return -ENOMEM;
-
-		for (i = 0; i < hex_ssid_len; i += 2) {
-			sscanf(hex_ssid + i, "%02x", &hex);
-			ssid[j++] = hex;
-		}
-
-		memcpy(scan_data->ssids[scan_data->num_ssids].ssid, ssid, j);
-		scan_data->ssids[scan_data->num_ssids].ssid_len = j;
-		scan_data->num_ssids++;
-
-		g_free(ssid);
-	}
-
-	/* Don't add duplicate entries */
-	for (i = 0; i < G_SUPPLICANT_MAX_FAST_SCAN; i++) {
-		if (scan_data->freqs[i] == 0) {
-			scan_data->freqs[i] = freq;
-			break;
-		} else if (scan_data->freqs[i] == freq)
-			break;
-	}
-
-	return 0;
-}
-
 struct last_connected {
 	GTimeVal modified;
 	gchar *ssid;
@@ -636,8 +785,7 @@ static int get_latest_connections(int max_ssids,
 
 	g_strfreev(services);
 
-	num_ssids = num_ssids > G_SUPPLICANT_MAX_FAST_SCAN ?
-		G_SUPPLICANT_MAX_FAST_SCAN : num_ssids;
+	num_ssids = num_ssids > max_ssids ? max_ssids : num_ssids;
 
 	iter = g_sequence_get_begin_iter(latest_list);
 
@@ -658,9 +806,9 @@ static int get_latest_connections(int max_ssids,
 
 static int wifi_scan(struct connman_device *device)
 {
-	stop_autoscan(device);
+	reset_autoscan(device);
 
-	return throw_wifi_scan(device, scan_callback);
+	return throw_wifi_scan(device, scan_callback_hidden);
 }
 
 static int wifi_scan_fast(struct connman_device *device)
@@ -675,6 +823,9 @@ static int wifi_scan_fast(struct connman_device *device)
 	if (wifi->tethering == TRUE)
 		return 0;
 
+	if (connman_device_get_scanning(device) == TRUE)
+		return -EALREADY;
+
 	driver_max_ssids = g_supplicant_interface_get_max_scan_ssids(
 							wifi->interface);
 	DBG("max ssids %d", driver_max_ssids);
@@ -687,31 +838,37 @@ static int wifi_scan_fast(struct connman_device *device)
 
 	ret = get_latest_connections(driver_max_ssids, scan_params);
 	if (ret <= 0) {
-		g_free(scan_params);
+		g_supplicant_free_scan_params(scan_params);
 		return wifi_scan(device);
 	}
 
-	stop_autoscan(device);
-
 	connman_device_ref(device);
+	reset_autoscan(device);
+
 	ret = g_supplicant_interface_scan(wifi->interface, scan_params,
 						scan_callback, device);
 	if (ret == 0)
 		connman_device_set_scanning(device, TRUE);
 	else {
-		g_free(scan_params);
+		g_supplicant_free_scan_params(scan_params);
 		connman_device_unref(device);
 	}
 
 	return ret;
 }
 
+/*
+ * This func is only used when connecting to this specific AP first time.
+ * It is not used when system autoconnects to hidden AP.
+ */
 static int wifi_scan_hidden(struct connman_device *device,
 		const char *ssid, unsigned int ssid_len,
-		const char *identity, const char* passphrase)
+		const char *identity, const char* passphrase,
+		gpointer user_data)
 {
 	struct wifi_data *wifi = connman_device_get_data(device);
 	GSupplicantScanParams *scan_params = NULL;
+	struct scan_ssid *scan_ssid;
 	struct hidden_params *hidden;
 	int ret;
 
@@ -723,11 +880,23 @@ static int wifi_scan_hidden(struct connman_device *device,
 	if (ssid == NULL || ssid_len == 0 || ssid_len > 32)
 		return -EINVAL;
 
+	if (connman_device_get_scanning(device) == TRUE)
+		return -EALREADY;
+
 	scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
 	if (scan_params == NULL)
 		return -ENOMEM;
-	memcpy(scan_params->ssids[0].ssid, ssid, ssid_len);
-	scan_params->ssids[0].ssid_len = ssid_len;
+
+	scan_ssid = g_try_new(struct scan_ssid, 1);
+	if (scan_ssid == NULL) {
+		g_free(scan_params);
+		return -ENOMEM;
+	}
+
+	memcpy(scan_ssid->ssid, ssid, ssid_len);
+	scan_ssid->ssid_len = ssid_len;
+	scan_params->ssids = g_slist_prepend(scan_params->ssids, scan_ssid);
+
 	scan_params->num_ssids = 1;
 
 	hidden = g_try_new0(struct hidden_params, 1);
@@ -739,18 +908,20 @@ static int wifi_scan_hidden(struct connman_device *device,
 	hidden->ssid_len = ssid_len;
 	hidden->identity = g_strdup(identity);
 	hidden->passphrase = g_strdup(passphrase);
+	hidden->user_data = user_data;
 	wifi->hidden = hidden;
 
-	stop_autoscan(device);
-
 	connman_device_ref(device);
+
+	reset_autoscan(device);
+
 	ret = g_supplicant_interface_scan(wifi->interface, scan_params,
 			scan_callback, device);
 	if (ret == 0)
 		connman_device_set_scanning(device, TRUE);
 	else {
 		connman_device_unref(device);
-		g_free(scan_params);
+		g_supplicant_free_scan_params(scan_params);
 		hidden_free(wifi->hidden);
 		wifi->hidden = NULL;
 	}
@@ -1175,17 +1346,21 @@ static void interface_state(GSupplicantInterface *interface)
 
 	case G_SUPPLICANT_STATE_AUTHENTICATING:
 	case G_SUPPLICANT_STATE_ASSOCIATING:
-		connman_network_set_associating(network, TRUE);
+		stop_autoscan(device);
+
+		if (wifi->connected == FALSE)
+			connman_network_set_associating(network, TRUE);
+
 		break;
 
 	case G_SUPPLICANT_STATE_COMPLETED:
+		/* though it should be already stopped: */
+		stop_autoscan(device);
+
 		if (handle_wps_completion(interface, network, device, wifi) ==
 									FALSE)
 			break;
 
-		/* reset scan trigger and schedule background scan */
-		connman_device_schedule_scan(device);
-
 		connman_network_set_connected(network, TRUE);
 		break;
 
@@ -1218,12 +1393,18 @@ static void interface_state(GSupplicantInterface *interface)
 						FALSE) != 0)
 			DBG("Could not disables selected network");
 
-		connman_network_set_associating(network, FALSE);
 		connman_network_set_connected(network, FALSE);
+		connman_network_set_associating(network, FALSE);
+		wifi->disconnecting = FALSE;
+
+		start_autoscan(device);
+
 		break;
 
 	case G_SUPPLICANT_STATE_INACTIVE:
 		connman_network_set_associating(network, FALSE);
+		start_autoscan(device);
+
 		break;
 
 	case G_SUPPLICANT_STATE_UNKNOWN:
@@ -1235,6 +1416,34 @@ static void interface_state(GSupplicantInterface *interface)
 
 	wifi->state = state;
 
+	/* Saving wpa_s state policy:
+	 * If connected and if the state changes are roaming related:
+	 * --> We stay connected
+	 * If completed
+	 * --> We are connected
+	 * All other case:
+	 * --> We are not connected
+	 * */
+	switch (state) {
+	case G_SUPPLICANT_STATE_AUTHENTICATING:
+	case G_SUPPLICANT_STATE_ASSOCIATING:
+	case G_SUPPLICANT_STATE_ASSOCIATED:
+	case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
+	case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
+		if (wifi->connected == TRUE)
+			connman_warn("Probably roaming right now!"
+						" Staying connected...");
+		else
+			wifi->connected = FALSE;
+		break;
+	case G_SUPPLICANT_STATE_COMPLETED:
+		wifi->connected = TRUE;
+		break;
+	default:
+		wifi->connected = FALSE;
+		break;
+	}
+
 	DBG("DONE");
 }
 
@@ -1251,7 +1460,7 @@ static void interface_removed(GSupplicantInterface *interface)
 		return;
 
 	if (wifi == NULL || wifi->device == NULL) {
-		connman_error("Wrong wifi pointer");
+		DBG("wifi interface already removed");
 		return;
 	}
 
@@ -1358,13 +1567,15 @@ static void network_added(GSupplicantNetwork *supplicant_network)
 	if (ssid != NULL)
 		connman_network_set_group(network, group);
 
-	if (wifi->hidden != NULL) {
+	if (wifi->hidden != NULL && ssid != NULL) {
 		if (wifi->hidden->ssid_len == ssid_len &&
 				memcmp(wifi->hidden->ssid, ssid,
 						ssid_len) == 0) {
 			connman_network_connect_hidden(network,
 					wifi->hidden->identity,
-					wifi->hidden->passphrase);
+					wifi->hidden->passphrase,
+					wifi->hidden->user_data);
+			wifi->hidden->user_data = NULL;
 			hidden_free(wifi->hidden);
 			wifi->hidden = NULL;
 		}