2 * Network Configuration Module
4 * Copyright (c) 2000 - 2012 Samsung Electronics Co., Ltd. All rights reserved.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
22 #include "netsupplicant.h"
25 #include "wifi-config.h"
26 #include "wifi-netlink-scan.h"
27 #include <netlink/genl/genl.h>
28 #include <netlink/genl/family.h>
29 #include <netlink/genl/ctrl.h>
30 #include <netlink/msg.h>
31 #include <netlink/attr.h>
32 #include <netlink/netlink.h>
35 static GSList *bss_info_list = NULL;
37 static gint __netconfig_compare_bss_by_rssi(gconstpointer a, gconstpointer b)
39 struct bss_scan_info_t *entry_a = (struct bss_scan_info_t *) a;
40 struct bss_scan_info_t *entry_b = (struct bss_scan_info_t *) b;
42 if (entry_a->signal > entry_b->signal)
45 if (entry_a->signal < entry_b->signal)
51 void __netconfig_notify_netlink_scan_done(const char *interface_name)
53 GVariantBuilder *builder = NULL;
54 GVariantBuilder *builder1 = NULL;
55 GVariantBuilder *builder2 = NULL;
57 const char *prop_ssid = "ssid";
58 const char *prop_bssid = "bssid";
59 const char *prop_freq = "freq";
60 const char *prop_rssi = "rssi";
61 const char *prop_vsie_list = "vsie_list";
62 const char *prop_sec = "security";
63 const char *prop_enc = "encryption";
65 bss_info_list = g_slist_sort(bss_info_list, __netconfig_compare_bss_by_rssi);
67 builder = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
68 for (list = bss_info_list; list != NULL; list = list->next) {
69 struct bss_scan_info_t *bss_info = (struct bss_scan_info_t *)list->data;
72 char *bssid = (char *)bss_info->bssid;
73 char *ssid = (char *)bss_info->ssid;
74 GSList *vsie_list = bss_info->vsie_list;
75 int freq = (int)bss_info->freq;
76 int signal = (int)bss_info->signal;
77 int sec_type = (int)bss_info->security_type;
78 int enc_type = (int)bss_info->encryption_type;
80 g_variant_builder_add(builder, "{sv}", prop_ssid, g_variant_new_string(ssid));
81 g_variant_builder_add(builder, "{sv}", prop_bssid, g_variant_new_string(bssid));
82 g_variant_builder_add(builder, "{sv}", prop_freq, g_variant_new_int32(freq));
83 g_variant_builder_add(builder, "{sv}", prop_rssi, g_variant_new_int32(signal));
84 builder1 = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
86 unsigned char *net_vsie;
87 unsigned int net_vsie_len;
89 for (list = vsie_list; list; list = list->next) {
90 builder2 = g_variant_builder_new(G_VARIANT_TYPE("ay"));
91 net_vsie = (unsigned char *)list->data;
92 net_vsie_len = net_vsie[1] + 2;
94 for (count = 0; count < net_vsie_len; count++) {
95 g_variant_builder_add(builder2, "y", net_vsie[count]);
98 g_variant_builder_add(builder1, "{sv}", "Vsie", g_variant_builder_end(builder2));
99 g_variant_builder_unref(builder2);
101 g_variant_builder_add(builder, "{sv}", prop_vsie_list, g_variant_builder_end(builder1));
102 g_variant_builder_unref(builder1);
104 if (vsie_list != NULL)
105 g_slist_free_full(vsie_list, g_free);
109 g_variant_builder_add(builder, "{sv}", prop_sec, g_variant_new_int32(sec_type));
110 g_variant_builder_add(builder, "{sv}", prop_enc, g_variant_new_int32(enc_type));
114 wifi_emit_netlink_scan_completed((Wifi *)get_wifi_object(),
115 interface_name, g_variant_builder_end(builder));
116 g_variant_builder_unref(builder);
118 if (bss_info_list != NULL)
119 g_slist_free_full(bss_info_list, g_free);
121 bss_info_list = NULL;
122 INFO("NetlinkScanCompleted");
127 static int ack_handler(struct nl_msg *msg, void *user_data)
129 int *err = user_data;
135 static int finish_handler(struct nl_msg *msg, void *user_data)
137 int *ret = user_data;
142 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
145 int *ret = user_data;
150 static int no_seq_check(struct nl_msg *msg, void *user_data)
156 static int __netconfig_family_handler(struct nl_msg *msg, void *user_data)
158 /** Callback for NL_CB_VALID in multicast group */
159 struct netconfig_netlink_scan_handler_args *grp = user_data;
160 struct nlattr *tb[CTRL_ATTR_MAX + 1];
161 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
162 struct nlattr *mc_grp;
165 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL);
167 if (!tb[CTRL_ATTR_MCAST_GROUPS])
170 nla_for_each_nested(mc_grp, tb[CTRL_ATTR_MCAST_GROUPS], rem_mc_grp) {
171 struct nlattr *tb_mc_grp[CTRL_ATTR_MCAST_GRP_MAX + 1];
173 nla_parse(tb_mc_grp, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mc_grp), nla_len(mc_grp), NULL);
175 if (!tb_mc_grp[CTRL_ATTR_MCAST_GRP_NAME] || !tb_mc_grp[CTRL_ATTR_MCAST_GRP_ID])
177 if (strncmp(nla_data(tb_mc_grp[CTRL_ATTR_MCAST_GRP_NAME]), grp->group,
178 nla_len(tb_mc_grp[CTRL_ATTR_MCAST_GRP_NAME])))
181 grp->id = nla_get_u32(tb_mc_grp[CTRL_ATTR_MCAST_GRP_ID]);
188 static int __netconfig_get_multicast_id(struct nl_sock *socket, const char *family, const char *group)
190 struct nl_msg *msg = NULL;
191 struct nl_cb *cb = NULL;
193 struct netconfig_netlink_scan_handler_args grp = { .group = group, .id = -ENOENT, };
199 cb = nl_cb_alloc(NL_CB_DEFAULT);
205 ctrl_id = genl_ctrl_resolve(socket, "nlctrl");
207 genlmsg_put(msg, 0, 0, ctrl_id, 0, 0, CTRL_CMD_GETFAMILY, 0);
210 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
212 ret = nl_send_auto_complete(socket, msg);
218 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &ret);
219 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &ret);
220 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, __netconfig_family_handler, &grp);
223 nl_recvmsgs(socket, cb);
236 static void __netconfig_macaddress_str(char *bssid, unsigned char *user_data)
240 for (i = 0; i < 6; i++) {
242 snprintf(bssid, 3, "%02x", user_data[i]);
245 snprintf(bssid, 4, ":%02x", user_data[i]);
252 WIFI_SECURITY_TYPE_NONE = 0,
253 WIFI_SECURITY_TYPE_WEP = 1,
254 WIFI_SECURITY_TYPE_WPA_PSK = 2,
255 WIFI_SECURITY_TYPE_WPA2_PSK = 3,
256 WIFI_SECURITY_TYPE_SAE = 4,
257 WIFI_SECURITY_TYPE_EAP = 5,
258 } wifi_security_type_e;
261 WIFI_ENCRYPTION_TYPE_NONE = 0,
262 WIFI_ENCRYPTION_TYPE_WEP = 1,
263 WIFI_ENCRYPTION_TYPE_TKIP = 2,
264 WIFI_ENCRYPTION_TYPE_AES = 3,
265 WIFI_ENCRYPTION_TYPE_TKIP_AES_MIXED = 4,
266 } wifi_encryption_type_e;
268 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
269 static unsigned char ieee80211_oui[3] = { 0x00, 0x0f, 0xac };
271 static void __netconfig_get_security(unsigned char *bss_element, int length, wifi_security_type_e *sec_type, wifi_encryption_type_e *enc_type)
278 gboolean ieee80211_psk = false;
280 *sec_type = WIFI_SECURITY_TYPE_NONE;
281 *enc_type = WIFI_ENCRYPTION_TYPE_NONE;
283 while (length >= 2 && length >= bss_element[1]) {
284 if (bss_element[0] == 221 && (bss_element[1] >= 4 && memcmp(bss_element + 2, ms_oui, 3) == 0)) {
285 data = bss_element + 2 + 4 + 2 + 4;
286 len = bss_element[1] - 4 - 2 - 4;
289 length -= bss_element[1] + 2;
290 bss_element += bss_element[1] + 2;
294 count = data[0] | (data[1] << 8);
296 if (2 + (count * 4) > len) {
297 length -= bss_element[1] + 2;
298 bss_element += bss_element[1] + 2;
302 for (i = 0; i < count; i++) {
303 t_data = (data + 2 + (i * 4));
305 if ((memcmp(t_data, ms_oui, 3) == 0) || (memcmp(t_data, ieee80211_oui, 3) == 0)) {
306 if (t_data[3] == 1 || t_data[3] == 5) { // 1 : WEP-40, 5 : WEP-104
307 *sec_type = WIFI_SECURITY_TYPE_WEP;
308 *enc_type = WIFI_ENCRYPTION_TYPE_WEP;
310 } else if (t_data[3] == 2) { // 2 : TKIP
311 if (*sec_type != WIFI_SECURITY_TYPE_WPA2_PSK)
312 *sec_type = WIFI_SECURITY_TYPE_WPA_PSK;
313 if (*enc_type == WIFI_ENCRYPTION_TYPE_AES)
314 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP_AES_MIXED;
316 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP;
317 } else if (t_data[3] == 4) { // 3 : CCMP
318 if (*sec_type != WIFI_SECURITY_TYPE_WPA2_PSK)
319 *sec_type = WIFI_SECURITY_TYPE_WPA_PSK;
320 if (*enc_type == WIFI_ENCRYPTION_TYPE_TKIP)
321 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP_AES_MIXED;
323 *enc_type = WIFI_ENCRYPTION_TYPE_AES;
328 data += 2 + (count * 4);
329 len -= 2 + (count * 4);
332 length -= bss_element[1] + 2;
333 bss_element += bss_element[1] + 2;
337 count = data[0] | (data[1] << 8);
339 if (2 + (count * 4) > len) {
340 length -= bss_element[1] + 2;
341 bss_element += bss_element[1] + 2;
345 for (i = 0; i < count; i++) {
346 t_data = (data + 2 + (i * 4));
348 if ((memcmp(t_data, ms_oui, 3) == 0) || (memcmp(t_data, ieee80211_oui, 3) == 0)) {
349 if (t_data[3] == 1 || t_data[3] == 3 || t_data[3] == 5) { // 1 : IEEE 802.1X, 3 : FT/IEEE 802.1X, 5 : IEEE 802.1X/SHA-256
350 *sec_type = WIFI_SECURITY_TYPE_EAP;
351 } else if (t_data[3] == 2 || t_data[3] == 4 || t_data[3] == 6) { // 2 : PSK, 4 : FT/PSK, 6 : PSK/SHA-256
352 if (*sec_type != WIFI_SECURITY_TYPE_WPA2_PSK)
353 *sec_type = WIFI_SECURITY_TYPE_WPA_PSK;
357 } else if (bss_element[0] == 48 && (bss_element[1] >= 2 && bss_element[1] <= 255)) {
358 data = bss_element + 2 + 2 + 4;
359 len = bss_element[1] - 2 - 4;
362 length -= bss_element[1] + 2;
363 bss_element += bss_element[1] + 2;
367 count = data[0] | (data[1] << 8);
368 if (2 + (count + 4) > len) {
369 length -= bss_element[1] + 2;
370 bss_element += bss_element[1] + 2;
374 for (i = 0; i < count; i++) {
375 t_data = (data + 2 + (i * 4));
377 if ((memcmp(t_data, ms_oui, 3) == 0) || (memcmp(t_data, ieee80211_oui, 3) == 0)) {
378 if (t_data[3] == 1 || t_data[3] == 5) { // 1 : WEP-40, 5 : WEP-104
379 *sec_type = WIFI_SECURITY_TYPE_WEP;
380 *enc_type = WIFI_ENCRYPTION_TYPE_WEP;
382 } else if (t_data[3] == 2) { // 2 : TKIP
383 *sec_type = WIFI_SECURITY_TYPE_WPA2_PSK;
384 if (*enc_type == WIFI_ENCRYPTION_TYPE_AES)
385 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP_AES_MIXED;
387 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP;
388 } else if (t_data[3] == 4) { // 3 : CCMP
389 *sec_type = WIFI_SECURITY_TYPE_WPA2_PSK;
390 if (*enc_type == WIFI_ENCRYPTION_TYPE_TKIP)
391 *enc_type = WIFI_ENCRYPTION_TYPE_TKIP_AES_MIXED;
393 *enc_type = WIFI_ENCRYPTION_TYPE_AES;
398 data += 2 + (count * 4);
399 len -= 2 + (count * 4);
402 length -= bss_element[1] + 2;
403 bss_element += bss_element[1] + 2;
407 count = data[0] | (data[1] << 8);
408 if (2 + (count * 4) > len) {
409 length -= bss_element[1] + 2;
410 bss_element += bss_element[1] + 2;
414 for (i = 0; i < count; i++) {
415 t_data = (data + 2 + (i * 4));
417 if ((memcmp(t_data, ms_oui, 3) == 0) || (memcmp(t_data, ieee80211_oui, 3) == 0)) {
418 if (t_data[3] == 1 || t_data[3] == 3 || t_data[3] == 5) { // 1 : IEEE 802.1X, 3 : FT/IEEE 802.1X, 5 : IEEE 802.1X/SHA-256
419 *sec_type = WIFI_SECURITY_TYPE_EAP;
420 } else if (t_data[3] == 2 || t_data[3] == 4 || t_data[3] == 6) { // 2 : PSK, 4 : FT/PSK, 6 : PSK/SHA-256
421 *sec_type = WIFI_SECURITY_TYPE_WPA2_PSK;
422 ieee80211_psk = true;
423 } else if (t_data[3] == 8) { // Add SAE security type for netlink scan
424 if (ieee80211_psk != true)
425 *sec_type = WIFI_SECURITY_TYPE_SAE;
431 length -= bss_element[1] + 2;
432 bss_element += bss_element[1] + 2;
438 static void __netconfig_get_vsie(unsigned char *bss_element, int length, GSList **dst)
444 DBG("Vendor specific data not available");
448 while (length >= 2 && length >= bss_element[1]) {
449 if (bss_element[0] == NETCONFIG_VENDOR_SPECIFIC_ID) {
450 vsie_len = bss_element[1]+2;
451 vsie = (unsigned char *)g_try_malloc0(vsie_len);
454 memcpy(vsie, bss_element, vsie_len);
455 *dst = g_slist_append(*dst, vsie);
457 DBG("Failed to allocate memory");
460 length -= bss_element[1] + 2;
461 bss_element += bss_element[1] + 2;
465 static void __netconfig_found_ap(unsigned char *bss_element, int length, char *str)
471 while (length >= 2 && length >= bss_element[1]) {
472 if (bss_element[0] == 0 && bss_element[1] <= 32) {
473 len = bss_element[1];
474 data = bss_element + 2;
475 for (i = 0; i < len; i++) {
476 if (isprint(data[i]) && data[i] != ' ' && data[i] != '\\')
477 snprintf(&str[i], 2, "%c", data[i]);
478 else if (data[i] == ' ' && (i != 0 && i != len -1))
479 snprintf(&str[i], 2, "%c", ' ');
481 snprintf(&str[i], 2, "%c", data[i]);
485 length -= bss_element[1] + 2;
486 bss_element += bss_element[1] + 2;
490 static int __netconfig_netlink_scan_cb(struct nl_msg *msg, void *user_data)
492 /** Called by the kernel with a dump of the successful scan's data. Called for each SSID. */
493 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
494 char bssid[NETCONFIG_BSSID_LEN+1];
495 char ssid[NETCONFIG_SSID_LEN+1] = {0, };
496 wifi_security_type_e sec_type = WIFI_SECURITY_TYPE_NONE;
497 wifi_encryption_type_e enc_type = WIFI_ENCRYPTION_TYPE_NONE;
500 struct nlattr *tb[NL80211_ATTR_MAX + 1];
501 struct nlattr *bss[NL80211_BSS_MAX + 1];
502 struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
503 [NL80211_BSS_FREQUENCY] = {.type = NLA_U32},
504 [NL80211_BSS_BSSID] = { },
505 [NL80211_BSS_CAPABILITY] = {.type = NLA_U16},
506 [NL80211_BSS_INFORMATION_ELEMENTS] = { },
507 [NL80211_BSS_SIGNAL_MBM] = {.type = NLA_U32},
510 /** Parse nl message and check error. */
511 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL);
512 if (!tb[NL80211_ATTR_BSS]) {
513 DBG("BSS info not available");
516 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], bss_policy)) {
517 DBG("Failed to parse nested attributes");
520 if ((!bss[NL80211_BSS_BSSID]) || (!bss[NL80211_BSS_INFORMATION_ELEMENTS]))
523 /** Extract BSSID and AP info. */
524 __netconfig_macaddress_str(bssid, nla_data(bss[NL80211_BSS_BSSID]));
525 __netconfig_found_ap(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), ssid);
526 __netconfig_get_vsie(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), &vsie);
528 if (bss[NL80211_BSS_CAPABILITY]) {
529 __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
530 if (capa & WLAN_CAPABILITY_PRIVACY) {
534 __netconfig_get_security(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]),
535 nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), &sec_type, &enc_type);
537 if (wep_check && sec_type == WIFI_SECURITY_TYPE_NONE) {
538 sec_type = WIFI_SECURITY_TYPE_WEP;
539 enc_type = WIFI_ENCRYPTION_TYPE_WEP;
542 if (sec_type == WIFI_SECURITY_TYPE_EAP) {
543 g_slist_free_full(vsie, g_free);
546 for (GSList *list = bss_info_list; list != NULL; list = list->next) {
547 struct bss_scan_info_t *bss_info = (struct bss_scan_info_t *)list->data;
548 if ((g_strcmp0(bss_info->ssid, ssid) == 0) && (bss_info->security_type == sec_type)
549 && (bss_info->encryption_type == enc_type)) {
550 g_slist_free_full(vsie, g_free);
555 /** Create AP info list. */
556 if (ssid[0] != '\0') {
557 struct bss_scan_info_t *bss_info;
560 bss_info = g_try_new0(struct bss_scan_info_t, 1);
561 if (bss_info == NULL) {
562 g_slist_free_full(vsie, g_free);
566 g_strlcpy(bss_info->bssid, bssid, strlen(bssid)+1);
567 g_strlcpy(bss_info->ssid, ssid, strlen(ssid)+1);
568 bss_info->vsie_list = vsie;
569 bss_info->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
571 if (bss[NL80211_BSS_SIGNAL_MBM]) {
572 signal = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
573 signal /= 100; /** mBm to dBm */
574 bss_info->signal = signal;
577 bss_info->security_type = sec_type;
578 bss_info->encryption_type = enc_type;
579 DBG("%s %d %d %s %d %d ", bss_info->bssid, bss_info->freq,
580 bss_info->signal, bss_info->ssid, bss_info->security_type,
581 bss_info->encryption_type);
583 if (bss_info->ssid[0] == '\0')
586 bss_info_list = g_slist_append(bss_info_list, bss_info);
589 g_slist_free_full(vsie, g_free);
594 static int __netconfig_netlink_scan_reply(struct nl_msg *msg, void *user_data)
596 /** Called by the kernel when the scan is done or has been aborted. */
597 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
598 struct netconfig_netlink_scan_results *results = user_data;
600 if (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS) {
601 DBG("Received NL80211_CMD_NEW_SCAN_RESULTS in reply");
603 results->aborted = 0;
604 } else if (gnlh->cmd == NL80211_CMD_SCAN_ABORTED) {
605 DBG("Received NL80211_CMD_SCAN_ABORTED in reply");
607 results->aborted = 1;
613 static int __netconfig_trigger_netlink_scan(struct nl_sock *socket,
614 int if_index, int id, GSList *ssid_list, char *vsie)
616 struct netconfig_netlink_scan_results results = { .done = 0, .aborted = 0 };
617 struct nl_msg *msg = NULL;
618 struct nl_cb *cb = NULL;
619 struct nl_msg *ssids = NULL;
622 unsigned char ies[NETCONFIG_MAX_VSIE_LEN+1] = {0x00, };
624 int mcid = __netconfig_get_multicast_id(socket, "nl80211", "scan");
627 ret = nl_socket_add_membership(socket, mcid);
629 DBG("Failed to add membership, error: (%s)", nl_geterror(-ret));
635 DBG("Failed to allocate msg");
636 nl_socket_drop_membership(socket, mcid);
639 ssids = nlmsg_alloc();
641 DBG("Failed to allocate ssids");
643 nl_socket_drop_membership(socket, mcid);
646 cb = nl_cb_alloc(NL_CB_DEFAULT);
648 DBG("Failed to allocate callbacks");
651 nl_socket_drop_membership(socket, mcid);
655 /** Set nl message and callback functions. */
656 genlmsg_put(msg, 0, 0, id, 0, 0, NL80211_CMD_TRIGGER_SCAN, 0);
657 ret = nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_index);
659 DBG("Failed to add integer attribute to netlink message, error: (%s)", nl_geterror(-ret));
663 for (GSList *i = ssid_list; i; i = i->next) {
664 char *ssid = (char *)i->data;
665 ret = nla_put(ssids, 1, strlen(ssid), ssid);
667 DBG("Failed to add ssid to netlink message, error: (%s)", nl_geterror(-ret));
672 if (g_slist_length(ssid_list) == 0) {
673 DBG("Scan with no ssids");
674 ret = nla_put(ssids, 1, 0, "");
676 DBG("nla_put error: (%s)", nl_geterror(-ret));
680 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
683 int vsie_len = strlen(vsie);
684 DBG("vsie: %s vsie_len: %d", vsie, vsie_len);
685 ies_len = (vsie_len % 2) ? ((vsie_len / 2) + 1) : (vsie_len / 2);
686 __netconfig_hex_str_to_bin(vsie, ies, ies_len);
689 if (ies[0] == NETCONFIG_VENDOR_SPECIFIC_ID && ies[1] >= 4) {
690 DBG("ies_len: %d ies: %02x %02x %02x %02x %02x %02x %02x", ies_len,
691 ies[0], ies[1], ies[2], ies[3], ies[4], ies[5], ies[6]);
692 ret = nla_put(msg, NL80211_ATTR_IE, ies_len, ies);
694 DBG("Failed to add vsie data to netlink message, error: (%s)", nl_geterror(-ret));
700 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, __netconfig_netlink_scan_reply, &results);
701 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
702 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
703 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
704 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
705 ret = nl_socket_set_nonblocking(socket);
706 DBG("Set the non-blocking mode [%d]", ret);
708 /** Send NL80211_CMD_TRIGGER_SCAN to start the scan. */
709 ret = nl_send_auto_complete(socket, msg);
712 DBG("nl_send_auto_complete() error: (%s)", nl_geterror(-ret));
716 DBG("Sent %d bytes to the kernel", ret);
719 ret = nl_recvmsgs(socket, cb);
721 DBG("nl_recvmsgs() ret: %d (%s)", ret, nl_geterror(-ret));
726 while (!results.done) {
727 ret = nl_recvmsgs(socket, cb);
728 #if !defined TIZEN_WEARABLE
729 if (ret == -NLE_AGAIN && err >= 0)
737 DBG("scan failed err: %d", err);
743 if (results.aborted) {
750 /** Release memory */
754 nl_socket_drop_membership(socket, mcid);
756 if (ret < 0 || ret == 1)
763 static int __netconfig_netlink_scan(netconfig_nl_global *global, GSList *ssid_list, char *vsie)
766 int ret = __netconfig_trigger_netlink_scan(global->socket, global->if_index, global->id, ssid_list, vsie);
767 if (ret == -NLE_AGAIN) {
769 ret = __netconfig_trigger_netlink_scan(global->socket, global->if_index, global->id, ssid_list, vsie);
774 static int __netconfig_initialize_nl80211(netconfig_nl_global *global,
775 const char *interface_name)
779 global->if_index = __netconfig_get_interface_index(interface_name);
780 if (global->if_index < 0) {
781 DBG("Failed to get interface index");
785 global->socket = nl_socket_alloc();
786 if (!global->socket) {
787 DBG("Failed to allocate netlink socket.");
791 if (genl_connect(global->socket)) {
792 DBG("Failed to connect to generic netlink.");
797 global->id = genl_ctrl_resolve(global->socket, "nl80211");
798 if (global->id < 0) {
799 DBG("Failed to find the nl80211 driver");
807 nl_socket_free(global->socket);
811 static void __netconfig_deinitialize_nl80211(netconfig_nl_global *global)
816 if (global->socket) {
817 nl_socket_free(global->socket);
818 global->socket = NULL;
822 static int __netconfig_initialize_nl_msg(netconfig_nl_global *global)
826 if (global == NULL) {
827 DBG("Invalid parameter.");
831 global->msg = nlmsg_alloc();
832 if (global->msg == NULL) {
833 DBG("Failed to allocate netlink message");
837 /* Set command into message */
838 genlmsg_put(global->msg, 0, 0, global->id, 0, NLM_F_DUMP, NL80211_CMD_GET_SCAN, 0);
839 rv = nla_put_u32(global->msg, NL80211_ATTR_IFINDEX, global->if_index);
841 DBG("Failed to add integer attribute to netlink message.");
842 nlmsg_free(global->msg);
845 nl_socket_modify_cb(global->socket, NL_CB_VALID, NL_CB_CUSTOM, __netconfig_netlink_scan_cb, NULL);
850 static void __netconfig_get_netlink_scan_parameters(GVariant *params, GSList *ssid_list, char **vsie)
855 g_variant_get(params, "a{sv}", &iter);
856 while (g_variant_iter_loop(iter, "{sv}", &key, &value)) {
857 if (g_strcmp0(key, "SSID") == 0) {
858 if (g_variant_is_of_type(value, G_VARIANT_TYPE_STRING)) {
859 char *ssid = g_strdup(g_variant_get_string(value, NULL));
860 DBG("ssid [%s]", ssid);
861 ssid_list = g_slist_append(ssid_list, ssid);
863 } else if (g_strcmp0(key, "VSIE") == 0) {
864 if (g_variant_is_of_type(value, G_VARIANT_TYPE_STRING))
865 *vsie = g_strdup(g_variant_get_string(value, NULL));
868 g_variant_iter_free(iter);
871 static int __netconfig_get_scan_results(netconfig_nl_global *global)
873 int ret = __netconfig_initialize_nl_msg(global);
875 DBG("__netconfig_initialize_nl_msg() failed, error %d", ret);
879 ret = nl_send_auto_complete(global->socket, global->msg);
881 DBG("nl_send_auto_complete() failed, error %d", ret);
884 DBG("NL80211_CMD_GET_SCAN sent %d bytes to the kernel", ret);
886 /** Receive the kernel message. */
887 ret = nl_recvmsgs_default(global->socket);
888 nlmsg_free(global->msg);
890 DBG("nl_recvmsgs_default() failed. ret: %d (error: %s)", ret, nl_geterror(-ret));
896 int handle_netlink_scan(Wifi *wifi, GDBusMethodInvocation *context,
897 const gchar *ifname, GVariant *params)
900 netconfig_nl_global global = {
907 /** Initialize netlink socket */
908 int ret = __netconfig_initialize_nl80211(&global, ifname);
910 DBG("__netconfig_initialize_nl80211() failed, error %d", ret);
911 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "AccessDenied");
915 GSList *ssid_list = NULL;
917 __netconfig_get_netlink_scan_parameters(params, ssid_list, &vsie);
918 /** Request NL80211_CMD_TRIGGER_SCAN to the kernel. */
919 ret = __netconfig_netlink_scan(&global, ssid_list, vsie);
920 g_slist_free_full(ssid_list, g_free);
924 DBG("__netconfig_netlink_scan() failed, error %d", ret);
925 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "AccessDenied");
926 __netconfig_deinitialize_nl80211(&global);
930 ret = __netconfig_get_scan_results(&global);
932 netconfig_error_dbus_method_return(context, NETCONFIG_ERROR_INTERNAL, "AccessDenied");
933 __netconfig_deinitialize_nl80211(&global);
937 wifi_complete_netlink_scan(wifi, context);
938 __netconfig_notify_netlink_scan_done(ifname);
939 __netconfig_deinitialize_nl80211(&global);