| /* |
| * |
| * Connection Manager |
| * |
| * Copyright (C) 2007-2009 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 |
| * published by the Free Software Foundation. |
| * |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <net/ethernet.h> |
| |
| #include <glib.h> |
| |
| #include <connman/blob.h> |
| |
| #include "connman.h" |
| |
| #define _DBG_WIFI(fmt, arg...) DBG(DBG_WIFI, fmt, ## arg) |
| |
| static inline gboolean ispsk(const char *security) |
| { |
| return (g_strcmp0(security, "wpa") == 0 || |
| g_strcmp0(security, "rsn") == 0 || |
| g_strcmp0(security, "psk") == 0); |
| } |
| |
| /* |
| * Construct a ``group name'' when creating a wifi service (see |
| * __connman_get_wifi_service_int). This string incorporates the |
| * SSID, security, and operating mode of all devices that should |
| * be grouped together. Note that we promote all PSK security |
| * settings to "psk" so services created before the device shows |
| * up in a scan result can be located when their associated |
| * network is created. |
| */ |
| char *connman_wifi_build_group_name(const unsigned char *ssid, |
| unsigned int ssid_len, |
| const char *mode, |
| const char *security) |
| { |
| GString *str; |
| unsigned int i; |
| |
| str = g_string_sized_new((ssid_len * 2) + 24); |
| if (str == NULL) |
| return NULL; |
| |
| if (ssid_len > 0 && ssid[0] != '\0') { |
| for (i = 0; i < ssid_len; i++) |
| g_string_append_printf(str, "%02x", ssid[i]); |
| } |
| |
| /* NB: use "psk" for all wpa/rsn/psk services */ |
| g_string_append_printf(str, "_%s_%s", mode, |
| ispsk(security) ? "psk" : security); |
| |
| return g_string_free(str, FALSE); |
| } |
| |
| /* |
| * Table of well-known SSID's that we want to disambiguate when |
| * constructing service identifiers. Normally all devices with |
| * the same SSID, security setup, and operating mode will be |
| * merged to the same service. A service advertising one of |
| * these SSID's will have a unique group name constructed that |
| * ensures like-devices will not be grouped together. |
| * |
| * TODO(sleffler) externalize this table and make it's use optional |
| */ |
| static struct { |
| char *name; |
| char *value; |
| } special_ssid[] = { |
| { "<hidden>", "hidden" }, |
| { "default", "linksys" }, |
| { "wireless" }, |
| { "linksys" }, |
| { "netgear" }, |
| { "dlink" }, |
| { "2wire" }, |
| { "compaq" }, |
| { "tsunami" }, |
| { "comcomcom", "3com" }, |
| { "3Com", "3com" }, |
| { "Symbol", "symbol" }, |
| { "Motorola", "motorola" }, |
| { "Wireless" , "wireless" }, |
| { "WLAN", "wlan" }, |
| { } |
| }; |
| |
| /* |
| * Like connman_wifi_build_group_name but used in the wifi plugins |
| * when creating network objects from scan results. The group name |
| * must match the strings constructed by connman_wifi_build_group_name |
| * so the associated services are matched up. This routine differs |
| * in that it handles hidden SSID's and does uniquification of |
| * devices that beacon well-known SSID's that we don't want to merge |
| * into a group. |
| */ |
| char *connman_wifi_build_group(const char *addr, const char *name, |
| const unsigned char *ssid, unsigned int ssid_len, |
| const char *mode, const char *security) |
| { |
| GString *str; |
| unsigned int i; |
| |
| if (addr == NULL) |
| return NULL; |
| |
| str = g_string_sized_new((ssid_len * 2) + 24); |
| if (str == NULL) |
| return NULL; |
| |
| if (ssid == NULL) { |
| g_string_append_printf(str, "hidden_%s", addr); |
| goto done; |
| } |
| |
| for (i = 0; special_ssid[i].name; i++) { |
| if (g_strcmp0(special_ssid[i].name, name) == 0) { |
| if (special_ssid[i].value == NULL) |
| g_string_append_printf(str, "%s_%.*s", |
| name, 2*ETH_ALEN, addr); |
| else |
| g_string_append_printf(str, "%s_%.*s", |
| special_ssid[i].value, 2*ETH_ALEN, addr); |
| goto done; |
| } |
| } |
| |
| if (ssid_len > 0 && ssid[0] != '\0') { |
| for (i = 0; i < ssid_len; i++) |
| g_string_append_printf(str, "%02x", ssid[i]); |
| } else |
| g_string_append_printf(str, "hidden_%.*s", 2*ETH_ALEN, addr); |
| done: |
| /* NB: use "psk" for all wpa/rsn/psk services */ |
| g_string_append_printf(str, "_%s_%s", mode, |
| ispsk(security) ? "psk" : security); |
| |
| return g_string_free(str, FALSE); |
| } |
| |
| /* |
| * NB: this knows a bit too much about how services are written to the profile. |
| */ |
| static void append_hidden_ssids(GKeyFile *keyfile, GSList **hidden_ssids) |
| { |
| gchar **keys; |
| |
| keys = g_key_file_get_groups(keyfile, NULL); |
| if (keys == NULL) { |
| connman_warn("%s: unable to retrieve groups", __func__); |
| return; |
| } |
| |
| for (; *keys != NULL; keys++) { |
| gchar *key = *keys; |
| gchar *hex_ssid; |
| struct blob *ssid; |
| int ret; |
| |
| if (g_ascii_strncasecmp(key, "wifi_", 5) != 0) |
| continue; |
| |
| if (!g_key_file_get_boolean(keyfile, key, "WiFi.HiddenSSID", |
| NULL)) |
| continue; |
| |
| hex_ssid = g_key_file_get_string(keyfile, key, "SSID", NULL); |
| if (hex_ssid == NULL) |
| continue; |
| |
| _DBG_WIFI("service %s", key); |
| |
| ret = blob_new_from_hex(&ssid, hex_ssid); |
| g_free(hex_ssid); |
| if (ret < 0) { |
| connman_warn("%s: skip hex ssid %s for key %s", |
| __func__, hex_ssid, key); |
| continue; |
| } |
| |
| _DBG_WIFI("ssid %.*s", (int) ssid->len, ssid->data); |
| *hidden_ssids = g_slist_prepend(*hidden_ssids, ssid); |
| } |
| } |
| |
| /** |
| * connman_wifi_append_hidden_ssids: |
| * @ssids: pointer to a list of hidden SSIDs |
| * |
| * Append the list of SSIDs whose services whose WiFi.HiddenSSID property is |
| * TRUE. These SSIDs should be directly probed whenever performing a WiFi |
| * network scan. |
| */ |
| void connman_wifi_append_hidden_ssids(GSList **ssids) |
| { |
| __connman_profile_append_hidden_ssids(ssids, append_hidden_ssids); |
| } |