/*
* hostapd / UNIX domain socket -based control interface
* Copyright (c) 2004-2014, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#ifndef CONFIG_NATIVE_WINDOWS
#include <sys/un.h>
#include <sys/stat.h>
#include <stddef.h>
#include "utils/common.h"
#include "utils/eloop.h"
#include "common/version.h"
#include "common/ieee802_11_defs.h"
#include "drivers/driver.h"
#include "radius/radius_client.h"
#include "radius/radius_server.h"
#include "ap/hostapd.h"
#include "ap/ap_config.h"
#include "ap/ieee802_1x.h"
#include "ap/wpa_auth.h"
#include "ap/ieee802_11.h"
#include "ap/sta_info.h"
#include "ap/wps_hostapd.h"
#include "ap/ctrl_iface_ap.h"
#include "ap/ap_drv_ops.h"
#include "ap/hs20.h"
#include "ap/wnm_ap.h"
#include "ap/wpa_auth.h"
#include "wps/wps_defs.h"
#include "wps/wps.h"
#include "config_file.h"
#include "ctrl_iface.h"
struct wpa_ctrl_dst {
struct wpa_ctrl_dst *next;
struct sockaddr_un addr;
socklen_t addrlen;
int debug_level;
int errors;
};
static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
const char *buf, size_t len);
static int hostapd_ctrl_iface_attach(struct hostapd_data *hapd,
struct sockaddr_un *from,
socklen_t fromlen)
{
struct wpa_ctrl_dst *dst;
dst = os_zalloc(sizeof(*dst));
if (dst == NULL)
return -1;
os_memcpy(&dst->addr, from, sizeof(struct sockaddr_un));
dst->addrlen = fromlen;
dst->debug_level = MSG_INFO;
dst->next = hapd->ctrl_dst;
hapd->ctrl_dst = dst;
wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached",
(u8 *) from->sun_path,
fromlen - offsetof(struct sockaddr_un, sun_path));
return 0;
}
static int hostapd_ctrl_iface_detach(struct hostapd_data *hapd,
struct sockaddr_un *from,
socklen_t fromlen)
{
struct wpa_ctrl_dst *dst, *prev = NULL;
dst = hapd->ctrl_dst;
while (dst) {
if (fromlen == dst->addrlen &&
os_memcmp(from->sun_path, dst->addr.sun_path,
fromlen - offsetof(struct sockaddr_un, sun_path))
== 0) {
wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor detached",
(u8 *) from->sun_path,
fromlen -
offsetof(struct sockaddr_un, sun_path));
if (prev == NULL)
hapd->ctrl_dst = dst->next;
else
prev->next = dst->next;
os_free(dst);
return 0;
}
prev = dst;
dst = dst->next;
}
return -1;
}
static int hostapd_ctrl_iface_level(struct hostapd_data *hapd,
struct sockaddr_un *from,
socklen_t fromlen,
char *level)
{
struct wpa_ctrl_dst *dst;
wpa_printf(MSG_DEBUG, "CTRL_IFACE LEVEL %s", level);
dst = hapd->ctrl_dst;
while (dst) {
if (fromlen == dst->addrlen &&
os_memcmp(from->sun_path, dst->addr.sun_path,
fromlen - offsetof(struct sockaddr_un, sun_path))
== 0) {
wpa_hexdump(MSG_DEBUG, "CTRL_IFACE changed monitor "
"level", (u8 *) from->sun_path, fromlen -
offsetof(struct sockaddr_un, sun_path));
dst->debug_level = atoi(level);
return 0;
}
dst = dst->next;
}
return -1;
}
static int hostapd_ctrl_iface_new_sta(struct hostapd_data *hapd,
const char *txtaddr)
{
u8 addr[ETH_ALEN];
struct sta_info *sta;
wpa_printf(MSG_DEBUG, "CTRL_IFACE NEW_STA %s", txtaddr);
if (hwaddr_aton(txtaddr, addr))
return -1;
sta = ap_get_sta(hapd, addr);
if (sta)
return 0;
wpa_printf(MSG_DEBUG, "Add new STA " MACSTR " based on ctrl_iface "
"notification", MAC2STR(addr));
sta = ap_sta_add(hapd, addr);
if (sta == NULL)
return -1;
hostapd_new_assoc_sta(hapd, sta, 0);
return 0;
}
#ifdef CONFIG_IEEE80211W
#ifdef NEED_AP_MLME
static int hostapd_ctrl_iface_sa_query(struct hostapd_data *hapd,
const char *txtaddr)
{
u8 addr[ETH_ALEN];
u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
wpa_printf(MSG_DEBUG, "CTRL_IFACE SA_QUERY %s", txtaddr);
if (hwaddr_aton(txtaddr, addr) ||
os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0)
return -1;
ieee802_11_send_sa_query_req(hapd, addr, trans_id);
return 0;
}
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
static int hostapd_ctrl_iface_wps_pin(struct hostapd_data *hapd, char *txt)
{
char *pin = os_strchr(txt, ' ');
char *timeout_txt;
int timeout;
u8 addr_buf[ETH_ALEN], *addr = NULL;
char *pos;
if (pin == NULL)
return -1;
*pin++ = '\0';
timeout_txt = os_strchr(pin, ' ');
if (timeout_txt) {
*timeout_txt++ = '\0';
timeout = atoi(timeout_txt);
pos = os_strchr(timeout_txt, ' ');
if (pos) {
*pos++ = '\0';
if (hwaddr_aton(pos, addr_buf) == 0)
addr = addr_buf;
}
} else
timeout = 0;
return hostapd_wps_add_pin(hapd, addr, txt, pin, timeout);
}
static int hostapd_ctrl_iface_wps_check_pin(
struct hostapd_data *hapd, char *cmd, char *buf, size_t buflen)
{
char pin[9];
size_t len;
char *pos;
int ret;
wpa_hexdump_ascii_key(MSG_DEBUG, "WPS_CHECK_PIN",
(u8 *) cmd, os_strlen(cmd));
for (pos = cmd, len = 0; *pos != '\0'; pos++) {
if (*pos < '0' || *pos > '9')
continue;
pin[len++] = *pos;
if (len == 9) {
wpa_printf(MSG_DEBUG, "WPS: Too long PIN");
return -1;
}
}
if (len != 4 && len != 8) {
wpa_printf(MSG_DEBUG, "WPS: Invalid PIN length %d", (int) len);
return -1;
}
pin[len] = '\0';
if (len == 8) {
unsigned int pin_val;
pin_val = atoi(pin);
if (!wps_pin_valid(pin_val)) {
wpa_printf(MSG_DEBUG, "WPS: Invalid checksum digit");
ret = os_snprintf(buf, buflen, "FAIL-CHECKSUM\n");
if (ret < 0 || (size_t) ret >= buflen)
return -1;
return ret;
}
}
ret = os_snprintf(buf, buflen, "%s", pin);
if (ret < 0 || (size_t) ret >= buflen)
return -1;
return ret;
}
#ifdef CONFIG_WPS_NFC
static int hostapd_ctrl_iface_wps_nfc_tag_read(struct hostapd_data *hapd,
char *pos)
{
size_t len;
struct wpabuf *buf;
int ret;
len = os_strlen(pos);
if (len & 0x01)
return -1;
len /= 2;
buf = wpabuf_alloc(len);
if (buf == NULL)
return -1;
if (hexstr2bin(pos, wpabuf_put(buf, len), len) < 0) {
wpabuf_free(buf);
return -1;
}
ret = hostapd_wps_nfc_tag_read(hapd, buf);
wpabuf_free(buf);
return ret;
}
static int hostapd_ctrl_iface_wps_nfc_config_token(struct hostapd_data *hapd,
char *cmd, char *reply,
size_t max_len)
{
int ndef;
struct wpabuf *buf;
int res;
if (os_strcmp(cmd, "WPS") == 0)
ndef = 0;
else if (os_strcmp(cmd, "NDEF") == 0)
ndef = 1;
else
return -1;
buf = hostapd_wps_nfc_config_token(hapd, ndef);
if (buf == NULL)
return -1;
res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
wpabuf_len(buf));
reply[res++] = '\n';
reply[res] = '\0';
wpabuf_free(buf);
return res;
}
static int hostapd_ctrl_iface_wps_nfc_token_gen(struct hostapd_data *hapd,
char *reply, size_t max_len,
int ndef)
{
struct wpabuf *buf;
int res;
buf = hostapd_wps_nfc_token_gen(hapd, ndef);
if (buf == NULL)
return -1;
res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
wpabuf_len(buf));
reply[res++] = '\n';
reply[res] = '\0';
wpabuf_free(buf);
return res;
}
static int hostapd_ctrl_iface_wps_nfc_token(struct hostapd_data *hapd,
char *cmd, char *reply,
size_t max_len)
{
if (os_strcmp(cmd, "WPS") == 0)
return hostapd_ctrl_iface_wps_nfc_token_gen(hapd, reply,
max_len, 0);
if (os_strcmp(cmd, "NDEF") == 0)
return hostapd_ctrl_iface_wps_nfc_token_gen(hapd, reply,
max_len, 1);
if (os_strcmp(cmd, "enable") == 0)
return hostapd_wps_nfc_token_enable(hapd);
if (os_strcmp(cmd, "disable") == 0) {
hostapd_wps_nfc_token_disable(hapd);
return 0;
}
return -1;
}
static int hostapd_ctrl_iface_nfc_get_handover_sel(struct hostapd_data *hapd,
char *cmd, char *reply,
size_t max_len)
{
struct wpabuf *buf;
int res;
char *pos;
int ndef;
pos = os_strchr(cmd, ' ');
if (pos == NULL)
return -1;
*pos++ = '\0';
if (os_strcmp(cmd, "WPS") == 0)
ndef = 0;
else if (os_strcmp(cmd, "NDEF") == 0)
ndef = 1;
else
return -1;
if (os_strcmp(pos, "WPS-CR") == 0)
buf = hostapd_wps_nfc_hs_cr(hapd, ndef);
else
buf = NULL;
if (buf == NULL)
return -1;
res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
wpabuf_len(buf));
reply[res++] = '\n';
reply[res] = '\0';
wpabuf_free(buf);
return res;
}
static int hostapd_ctrl_iface_nfc_report_handover(struct hostapd_data *hapd,
char *cmd)
{
size_t len;
struct wpabuf *req, *sel;
int ret;
char *pos, *role, *type, *pos2;
role = cmd;
pos = os_strchr(role, ' ');
if (pos == NULL)
return -1;
*pos++ = '\0';
type = pos;
pos = os_strchr(type, ' ');
if (pos == NULL)
return -1;
*pos++ = '\0';
pos2 = os_strchr(pos, ' ');
if (pos2 == NULL)
return -1;
*pos2++ = '\0';
len = os_strlen(pos);
if (len & 0x01)
return -1;
len /= 2;
req = wpabuf_alloc(len);
if (req == NULL)
return -1;
if (hexstr2bin(pos, wpabuf_put(req, len), len) < 0) {
wpabuf_free(req);
return -1;
}
len = os_strlen(pos2);
if (len & 0x01) {
wpabuf_free(req);
return -1;
}
len /= 2;
sel = wpabuf_alloc(len);
if (sel == NULL) {
wpabuf_free(req);
return -1;
}
if (hexstr2bin(pos2, wpabuf_put(sel, len), len) < 0) {
wpabuf_free(req);
wpabuf_free(sel);
return -1;
}
if (os_strcmp(role, "RESP") == 0 && os_strcmp(type, "WPS") == 0) {
ret = hostapd_wps_nfc_report_handover(hapd, req, sel);
} else {
wpa_printf(MSG_DEBUG, "NFC: Unsupported connection handover "
"reported: role=%s type=%s", role, type);
ret = -1;
}
wpabuf_free(req);
wpabuf_free(sel);
return ret;
}
#endif /* CONFIG_WPS_NFC */
static int hostapd_ctrl_iface_wps_ap_pin(struct hostapd_data *hapd, char *txt,
char *buf, size_t buflen)
{
int timeout = 300;
char *pos;
const char *pin_txt;
pos = os_strchr(txt, ' ');
if (pos)
*pos++ = '\0';
if (os_strcmp(txt, "disable") == 0) {
hostapd_wps_ap_pin_disable(hapd);
return os_snprintf(buf, buflen, "OK\n");
}
if (os_strcmp(txt, "random") == 0) {
if (pos)
timeout = atoi(pos);
pin_txt = hostapd_wps_ap_pin_random(hapd, timeout);
if (pin_txt == NULL)
return -1;
return os_snprintf(buf, buflen, "%s", pin_txt);
}
if (os_strcmp(txt, "get") == 0) {
pin_txt = hostapd_wps_ap_pin_get(hapd);
if (pin_txt == NULL)
return -1;
return os_snprintf(buf, buflen, "%s", pin_txt);
}
if (os_strcmp(txt, "set") == 0) {
char *pin;
if (pos == NULL)
return -1;
pin = pos;
pos = os_strchr(pos, ' ');
if (pos) {
*pos++ = '\0';
timeout = atoi(pos);
}
if (os_strlen(pin) > buflen)
return -1;
if (hostapd_wps_ap_pin_set(hapd, pin, timeout) < 0)
return -1;
return os_snprintf(buf, buflen, "%s", pin);
}
return -1;
}
static int hostapd_ctrl_iface_wps_config(struct hostapd_data *hapd, char *txt)
{
char *pos;
char *ssid, *auth, *encr = NULL, *key = NULL;
ssid = txt;
pos = os_strchr(txt, ' ');
if (!pos)
return -1;
*pos++ = '\0';
auth = pos;
pos = os_strchr(pos, ' ');
if (pos) {
*pos++ = '\0';
encr = pos;
pos = os_strchr(pos, ' ');
if (pos) {
*pos++ = '\0';
key = pos;
}
}
return hostapd_wps_config_ap(hapd, ssid, auth, encr, key);
}
static const char * pbc_status_str(enum pbc_status status)
{
switch (status) {
case WPS_PBC_STATUS_DISABLE:
return "Disabled";
case WPS_PBC_STATUS_ACTIVE:
return "Active";
case WPS_PBC_STATUS_TIMEOUT:
return "Timed-out";
case WPS_PBC_STATUS_OVERLAP:
return "Overlap";
default:
return "Unknown";
}
}
static int hostapd_ctrl_iface_wps_get_status(struct hostapd_data *hapd,
char *buf, size_t buflen)
{
int ret;
char *pos, *end;
pos = buf;
end = buf + buflen;
ret = os_snprintf(pos, end - pos, "PBC Status: %s\n",
pbc_status_str(hapd->wps_stats.pbc_status));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "Last WPS result: %s\n",
(hapd->wps_stats.status == WPS_STATUS_SUCCESS ?
"Success":
(hapd->wps_stats.status == WPS_STATUS_FAILURE ?
"Failed" : "None")));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
/* If status == Failure - Add possible Reasons */
if(hapd->wps_stats.status == WPS_STATUS_FAILURE &&
hapd->wps_stats.failure_reason > 0) {
ret = os_snprintf(pos, end - pos,
"Failure Reason: %s\n",
wps_ei_str(hapd->wps_stats.failure_reason));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->wps_stats.status) {
ret = os_snprintf(pos, end - pos, "Peer Address: " MACSTR "\n",
MAC2STR(hapd->wps_stats.peer_addr));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
return pos - buf;
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
static int hostapd_ctrl_iface_hs20_wnm_notif(struct hostapd_data *hapd,
const char *cmd)
{
u8 addr[ETH_ALEN];
const char *url;
if (hwaddr_aton(cmd, addr))
return -1;
url = cmd + 17;
if (*url == '\0') {
url = NULL;
} else {
if (*url != ' ')
return -1;
url++;
if (*url == '\0')
url = NULL;
}
return hs20_send_wnm_notification(hapd, addr, 1, url);
}
static int hostapd_ctrl_iface_hs20_deauth_req(struct hostapd_data *hapd,
const char *cmd)
{
u8 addr[ETH_ALEN];
int code, reauth_delay, ret;
const char *pos;
size_t url_len;
struct wpabuf *req;
/* <STA MAC Addr> <Code(0/1)> <Re-auth-Delay(sec)> [URL] */
if (hwaddr_aton(cmd, addr))
return -1;
pos = os_strchr(cmd, ' ');
if (pos == NULL)
return -1;
pos++;
code = atoi(pos);
pos = os_strchr(pos, ' ');
if (pos == NULL)
return -1;
pos++;
reauth_delay = atoi(pos);
url_len = 0;
pos = os_strchr(pos, ' ');
if (pos) {
pos++;
url_len = os_strlen(pos);
}
req = wpabuf_alloc(4 + url_len);
if (req == NULL)
return -1;
wpabuf_put_u8(req, code);
wpabuf_put_le16(req, reauth_delay);
wpabuf_put_u8(req, url_len);
if (pos)
wpabuf_put_data(req, pos, url_len);
wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to " MACSTR
" to indicate imminent deauthentication (code=%d "
"reauth_delay=%d)", MAC2STR(addr), code, reauth_delay);
ret = hs20_send_wnm_notification_deauth_req(hapd, addr, req);
wpabuf_free(req);
return ret;
}
#endif /* CONFIG_HS20 */
#ifdef CONFIG_INTERWORKING
static int hostapd_ctrl_iface_set_qos_map_set(struct hostapd_data *hapd,
const char *cmd)
{
u8 qos_map_set[16 + 2 * 21], count = 0;
const char *pos = cmd;
int val, ret;
for (;;) {
if (count == sizeof(qos_map_set)) {
wpa_printf(MSG_ERROR, "Too many qos_map_set parameters");
return -1;
}
val = atoi(pos);
if (val < 0 || val > 255) {
wpa_printf(MSG_INFO, "Invalid QoS Map Set");
return -1;
}
qos_map_set[count++] = val;
pos = os_strchr(pos, ',');
if (!pos)
break;
pos++;
}
if (count < 16 || count & 1) {
wpa_printf(MSG_INFO, "Invalid QoS Map Set");
return -1;
}
ret = hostapd_drv_set_qos_map(hapd, qos_map_set, count);
if (ret) {
wpa_printf(MSG_INFO, "Failed to set QoS Map Set");
return -1;
}
os_memcpy(hapd->conf->qos_map_set, qos_map_set, count);
hapd->conf->qos_map_set_len = count;
return 0;
}
static int hostapd_ctrl_iface_send_qos_map_conf(struct hostapd_data *hapd,
const char *cmd)
{
u8 addr[ETH_ALEN];
struct sta_info *sta;
struct wpabuf *buf;
u8 *qos_map_set = hapd->conf->qos_map_set;
u8 qos_map_set_len = hapd->conf->qos_map_set_len;
int ret;
if (!qos_map_set_len) {
wpa_printf(MSG_INFO, "QoS Map Set is not set");
return -1;
}
if (hwaddr_aton(cmd, addr))
return -1;
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "Station " MACSTR " not found "
"for QoS Map Configuration message",
MAC2STR(addr));
return -1;
}
if (!sta->qos_map_enabled) {
wpa_printf(MSG_DEBUG, "Station " MACSTR " did not indicate "
"support for QoS Map", MAC2STR(addr));
return -1;
}
buf = wpabuf_alloc(2 + 2 + qos_map_set_len);
if (buf == NULL)
return -1;
wpabuf_put_u8(buf, WLAN_ACTION_QOS);
wpabuf_put_u8(buf, QOS_QOS_MAP_CONFIG);
/* QoS Map Set Element */
wpabuf_put_u8(buf, WLAN_EID_QOS_MAP_SET);
wpabuf_put_u8(buf, qos_map_set_len);
wpabuf_put_data(buf, qos_map_set, qos_map_set_len);
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
return ret;
}
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_WNM
static int hostapd_ctrl_iface_disassoc_imminent(struct hostapd_data *hapd,
const char *cmd)
{
u8 addr[ETH_ALEN];
int disassoc_timer;
struct sta_info *sta;
if (hwaddr_aton(cmd, addr))
return -1;
if (cmd[17] != ' ')
return -1;
disassoc_timer = atoi(cmd + 17);
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "Station " MACSTR
" not found for disassociation imminent message",
MAC2STR(addr));
return -1;
}
return wnm_send_disassoc_imminent(hapd, sta, disassoc_timer);
}
static int hostapd_ctrl_iface_ess_disassoc(struct hostapd_data *hapd,
const char *cmd)
{
u8 addr[ETH_ALEN];
const char *url, *timerstr;
int disassoc_timer;
struct sta_info *sta;
if (hwaddr_aton(cmd, addr))
return -1;
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "Station " MACSTR
" not found for ESS disassociation imminent message",
MAC2STR(addr));
return -1;
}
timerstr = cmd + 17;
if (*timerstr != ' ')
return -1;
timerstr++;
disassoc_timer = atoi(timerstr);
if (disassoc_timer < 0 || disassoc_timer > 65535)
return -1;
url = os_strchr(timerstr, ' ');
if (url == NULL)
return -1;
url++;
return wnm_send_ess_disassoc_imminent(hapd, sta, url, disassoc_timer);
}
#endif /* CONFIG_WNM */
static int hostapd_ctrl_iface_get_config(struct hostapd_data *hapd,
char *buf, size_t buflen)
{
int ret;
char *pos, *end;
pos = buf;
end = buf + buflen;
ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n"
"ssid=%s\n",
MAC2STR(hapd->own_addr),
wpa_ssid_txt(hapd->conf->ssid.ssid,
hapd->conf->ssid.ssid_len));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
#ifdef CONFIG_WPS
ret = os_snprintf(pos, end - pos, "wps_state=%s\n",
hapd->conf->wps_state == 0 ? "disabled" :
(hapd->conf->wps_state == 1 ? "not configured" :
"configured"));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (hapd->conf->wps_state && hapd->conf->wpa &&
hapd->conf->ssid.wpa_passphrase) {
ret = os_snprintf(pos, end - pos, "passphrase=%s\n",
hapd->conf->ssid.wpa_passphrase);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->conf->wps_state && hapd->conf->wpa &&
hapd->conf->ssid.wpa_psk &&
hapd->conf->ssid.wpa_psk->group) {
char hex[PMK_LEN * 2 + 1];
wpa_snprintf_hex(hex, sizeof(hex),
hapd->conf->ssid.wpa_psk->psk, PMK_LEN);
ret = os_snprintf(pos, end - pos, "psk=%s\n", hex);
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#endif /* CONFIG_WPS */
if (hapd->conf->wpa && hapd->conf->wpa_key_mgmt) {
ret = os_snprintf(pos, end - pos, "key_mgmt=");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) {
ret = os_snprintf(pos, end - pos, "WPA-PSK ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
ret = os_snprintf(pos, end - pos, "WPA-EAP ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#ifdef CONFIG_IEEE80211R
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_PSK) {
ret = os_snprintf(pos, end - pos, "FT-PSK ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
ret = os_snprintf(pos, end - pos, "FT-EAP ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#ifdef CONFIG_SAE
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_SAE) {
ret = os_snprintf(pos, end - pos, "FT-SAE ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#endif /* CONFIG_SAE */
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
ret = os_snprintf(pos, end - pos, "WPA-PSK-SHA256 ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
ret = os_snprintf(pos, end - pos, "WPA-EAP-SHA256 ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_SAE
if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_SAE) {
ret = os_snprintf(pos, end - pos, "SAE ");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
#endif /* CONFIG_SAE */
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if (hapd->conf->wpa) {
ret = os_snprintf(pos, end - pos, "group_cipher=%s\n",
wpa_cipher_txt(hapd->conf->wpa_group));
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if ((hapd->conf->wpa & WPA_PROTO_RSN) && hapd->conf->rsn_pairwise) {
ret = os_snprintf(pos, end - pos, "rsn_pairwise_cipher=");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ret = wpa_write_ciphers(pos, end, hapd->conf->rsn_pairwise,
" ");
if (ret < 0)
return pos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
if ((hapd->conf->wpa & WPA_PROTO_WPA) && hapd->conf->wpa_pairwise) {
ret = os_snprintf(pos, end - pos, "wpa_pairwise_cipher=");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
ret = wpa_write_ciphers(pos, end, hapd->conf->wpa_pairwise,
" ");
if (ret < 0)
return pos - buf;
pos += ret;
ret = os_snprintf(pos, end - pos, "\n");
if (ret < 0 || ret >= end - pos)
return pos - buf;
pos += ret;
}
return pos - buf;
}
static int hostapd_ctrl_iface_set(struct hostapd_data *hapd, char *cmd)
{
char *value;
int ret = 0;
value = os_strchr(cmd, ' ');
if (value == NULL)
return -1;
*value++ = '\0';
wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
if (0) {
#ifdef CONFIG_WPS_TESTING
} else if (os_strcasecmp(cmd, "wps_version_number") == 0) {
long int val;
val = strtol(value, NULL, 0);
if (val < 0 || val > 0xff) {
ret = -1;
wpa_printf(MSG_DEBUG, "WPS: Invalid "
"wps_version_number %ld", val);
} else {
wps_version_number = val;
wpa_printf(MSG_DEBUG, "WPS: Testing - force WPS "
"version %u.%u",
(wps_version_number & 0xf0) >> 4,
wps_version_number & 0x0f);
hostapd_wps_update_ie(hapd);
}
} else if (os_strcasecmp(cmd, "wps_testing_dummy_cred") == 0) {
wps_testing_dummy_cred = atoi(value);
wpa_printf(MSG_DEBUG, "WPS: Testing - dummy_cred=%d",
wps_testing_dummy_cred);
} else if (os_strcasecmp(cmd, "wps_corrupt_pkhash") == 0) {
wps_corrupt_pkhash = atoi(value);
wpa_printf(MSG_DEBUG, "WPS: Testing - wps_corrupt_pkhash=%d",
wps_corrupt_pkhash);
#endif /* CONFIG_WPS_TESTING */
#ifdef CONFIG_INTERWORKING
} else if (os_strcasecmp(cmd, "gas_frag_limit") == 0) {
int val = atoi(value);
if (val <= 0)
ret = -1;
else
hapd->gas_frag_limit = val;
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_TESTING_OPTIONS
} else if (os_strcasecmp(cmd, "ext_mgmt_frame_handling") == 0) {
hapd->ext_mgmt_frame_handling = atoi(value);
#endif /* CONFIG_TESTING_OPTIONS */
} else {
struct sta_info *sta;
int vlan_id;
ret = hostapd_set_iface(hapd->iconf, hapd->conf, cmd, value);
if (ret)
return ret;
if (os_strcasecmp(cmd, "deny_mac_file") == 0) {
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (hostapd_maclist_found(
hapd->conf->deny_mac,
hapd->conf->num_deny_mac, sta->addr,
&vlan_id) &&
(!vlan_id || vlan_id == sta->vlan_id))
ap_sta_disconnect(
hapd, sta, sta->addr,
WLAN_REASON_UNSPECIFIED);
}
} else if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED &&
os_strcasecmp(cmd, "accept_mac_file") == 0) {
for (sta = hapd->sta_list; sta; sta = sta->next) {
if (!hostapd_maclist_found(
hapd->conf->accept_mac,
hapd->conf->num_accept_mac,
sta->addr, &vlan_id) ||
(vlan_id && vlan_id != sta->vlan_id))
ap_sta_disconnect(
hapd, sta, sta->addr,
WLAN_REASON_UNSPECIFIED);
}
}
}
return ret;
}
static int hostapd_ctrl_iface_get(struct hostapd_data *hapd, char *cmd,
char *buf, size_t buflen)
{
int res;
wpa_printf(MSG_DEBUG, "CTRL_IFACE GET '%s'", cmd);
if (os_strcmp(cmd, "version") == 0) {
res = os_snprintf(buf, buflen, "%s", VERSION_STR);
if (res < 0 || (unsigned int) res >= buflen)
return -1;
return res;
}
return -1;
}
static int hostapd_ctrl_iface_enable(struct hostapd_iface *iface)
{
if (hostapd_enable_iface(iface) < 0) {
wpa_printf(MSG_ERROR, "Enabling of interface failed");
return -1;
}
return 0;
}
static int hostapd_ctrl_iface_reload(struct hostapd_iface *iface)
{
if (hostapd_reload_iface(iface) < 0) {
wpa_printf(MSG_ERROR, "Reloading of interface failed");
return -1;
}
return 0;
}
static int hostapd_ctrl_iface_disable(struct hostapd_iface *iface)
{
if (hostapd_disable_iface(iface) < 0) {
wpa_printf(MSG_ERROR, "Disabling of interface failed");
return -1;
}
return 0;
}
#ifdef CONFIG_TESTING_OPTIONS
static int hostapd_ctrl_iface_radar(struct hostapd_data *hapd, char *cmd)
{
union wpa_event_data data;
char *pos, *param;
enum wpa_event_type event;
wpa_printf(MSG_DEBUG, "RADAR TEST: %s", cmd);
os_memset(&data, 0, sizeof(data));
param = os_strchr(cmd, ' ');
if (param == NULL)
return -1;
*param++ = '\0';
if (os_strcmp(cmd, "DETECTED") == 0)
event = EVENT_DFS_RADAR_DETECTED;
else if (os_strcmp(cmd, "CAC-FINISHED") == 0)
event = EVENT_DFS_CAC_FINISHED;
else if (os_strcmp(cmd, "CAC-ABORTED") == 0)
event = EVENT_DFS_CAC_ABORTED;
else if (os_strcmp(cmd, "NOP-FINISHED") == 0)
event = EVENT_DFS_NOP_FINISHED;
else {
wpa_printf(MSG_DEBUG, "Unsupported RADAR test command: %s",
cmd);
return -1;
}
pos = os_strstr(param, "freq=");
if (pos)
data.dfs_event.freq = atoi(pos + 5);
pos = os_strstr(param, "ht_enabled=1");
if (pos)
data.dfs_event.ht_enabled = 1;
pos = os_strstr(param, "chan_offset=");
if (pos)
data.dfs_event.chan_offset = atoi(pos + 12);
pos = os_strstr(param, "chan_width=");
if (pos)
data.dfs_event.chan_width = atoi(pos + 11);
pos = os_strstr(param, "cf1=");
if (pos)
data.dfs_event.cf1 = atoi(pos + 4);
pos = os_strstr(param, "cf2=");
if (pos)
data.dfs_event.cf2 = atoi(pos + 4);
wpa_supplicant_event(hapd, event, &data);
return 0;
}
static int hostapd_ctrl_iface_mgmt_tx(struct hostapd_data *hapd, char *cmd)
{
size_t len;
u8 *buf;
int res;
wpa_printf(MSG_DEBUG, "External MGMT TX: %s", cmd);
len = os_strlen(cmd);
if (len & 1)
return -1;
len /= 2;
buf = os_malloc(len);
if (buf == NULL)
return -1;
if (hexstr2bin(cmd, buf, len) < 0) {
os_free(buf);
return -1;
}
res = hostapd_drv_send_mlme(hapd, buf, len, 0);
os_free(buf);
return res;
}
#endif /* CONFIG_TESTING_OPTIONS */
static int hostapd_ctrl_iface_chan_switch(struct hostapd_iface *iface,
char *pos)
{
#ifdef NEED_AP_MLME
struct csa_settings settings;
int ret;
unsigned int i;
ret = hostapd_parse_csa_settings(pos, &settings);
if (ret)
return ret;
for (i = 0; i < iface->num_bss; i++) {
ret = hostapd_switch_channel(iface->bss[i], &settings);
if (ret) {
/* FIX: What do we do if CSA fails in the middle of
* submitting multi-BSS CSA requests? */
return ret;
}
}
return 0;
#else /* NEED_AP_MLME */
return -1;
#endif /* NEED_AP_MLME */
}
static int hostapd_ctrl_iface_mib(struct hostapd_data *hapd, char *reply,
int reply_size, const char *param)
{
#ifdef RADIUS_SERVER
if (os_strcmp(param, "radius_server") == 0) {
return radius_server_get_mib(hapd->radius_srv, reply,
reply_size);
}
#endif /* RADIUS_SERVER */
return -1;
}
static int hostapd_ctrl_iface_vendor(struct hostapd_data *hapd, char *cmd,
char *buf, size_t buflen)
{
int ret;
char *pos;
u8 *data = NULL;
unsigned int vendor_id, subcmd;
struct wpabuf *reply;
size_t data_len = 0;
/* cmd: <vendor id> <subcommand id> [<hex formatted data>] */
vendor_id = strtoul(cmd, &pos, 16);
if (!isblank(*pos))
return -EINVAL;
subcmd = strtoul(pos, &pos, 10);
if (*pos != '\0') {
if (!isblank(*pos++))
return -EINVAL;
data_len = os_strlen(pos);
}
if (data_len) {
data_len /= 2;
data = os_malloc(data_len);
if (!data)
return -ENOBUFS;
if (hexstr2bin(pos, data, data_len)) {
wpa_printf(MSG_DEBUG,
"Vendor command: wrong parameter format");
os_free(data);
return -EINVAL;
}
}
reply = wpabuf_alloc((buflen - 1) / 2);
if (!reply) {
os_free(data);
return -ENOBUFS;
}
ret = hostapd_drv_vendor_cmd(hapd, vendor_id, subcmd, data, data_len,
reply);
if (ret == 0)
ret = wpa_snprintf_hex(buf, buflen, wpabuf_head_u8(reply),
wpabuf_len(reply));
wpabuf_free(reply);
os_free(data);
return ret;
}
static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
void *sock_ctx)
{
struct hostapd_data *hapd = eloop_ctx;
char buf[4096];
int res;
struct sockaddr_un from;
socklen_t fromlen = sizeof(from);
char *reply;
const int reply_size = 4096;
int reply_len;
int level = MSG_DEBUG;
res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
(struct sockaddr *) &from, &fromlen);
if (res < 0) {
perror("recvfrom(ctrl_iface)");
return;
}
buf[res] = '\0';
if (os_strcmp(buf, "PING") == 0)
level = MSG_EXCESSIVE;
wpa_hexdump_ascii(level, "RX ctrl_iface", (u8 *) buf, res);
reply = os_malloc(reply_size);
if (reply == NULL) {
sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from,
fromlen);
return;
}
os_memcpy(reply, "OK\n", 3);
reply_len = 3;
if (os_strcmp(buf, "PING") == 0) {
os_memcpy(reply, "PONG\n", 5);
reply_len = 5;
} else if (os_strncmp(buf, "RELOG", 5) == 0) {
if (wpa_debug_reopen_file() < 0)
reply_len = -1;
} else if (os_strcmp(buf, "STATUS") == 0) {
reply_len = hostapd_ctrl_iface_status(hapd, reply,
reply_size);
} else if (os_strcmp(buf, "STATUS-DRIVER") == 0) {
reply_len = hostapd_drv_status(hapd, reply, reply_size);
} else if (os_strcmp(buf, "MIB") == 0) {
reply_len = ieee802_11_get_mib(hapd, reply, reply_size);
if (reply_len >= 0) {
res = wpa_get_mib(hapd->wpa_auth, reply + reply_len,
reply_size - reply_len);
if (res < 0)
reply_len = -1;
else
reply_len += res;
}
if (reply_len >= 0) {
res = ieee802_1x_get_mib(hapd, reply + reply_len,
reply_size - reply_len);
if (res < 0)
reply_len = -1;
else
reply_len += res;
}
#ifndef CONFIG_NO_RADIUS
if (reply_len >= 0) {
res = radius_client_get_mib(hapd->radius,
reply + reply_len,
reply_size - reply_len);
if (res < 0)
reply_len = -1;
else
reply_len += res;
}
#endif /* CONFIG_NO_RADIUS */
} else if (os_strncmp(buf, "MIB ", 4) == 0) {
reply_len = hostapd_ctrl_iface_mib(hapd, reply, reply_size,
buf + 4);
} else if (os_strcmp(buf, "STA-FIRST") == 0) {
reply_len = hostapd_ctrl_iface_sta_first(hapd, reply,
reply_size);
} else if (os_strncmp(buf, "STA ", 4) == 0) {
reply_len = hostapd_ctrl_iface_sta(hapd, buf + 4, reply,
reply_size);
} else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
reply_len = hostapd_ctrl_iface_sta_next(hapd, buf + 9, reply,
reply_size);
} else if (os_strcmp(buf, "ATTACH") == 0) {
if (hostapd_ctrl_iface_attach(hapd, &from, fromlen))
reply_len = -1;
} else if (os_strcmp(buf, "DETACH") == 0) {
if (hostapd_ctrl_iface_detach(hapd, &from, fromlen))
reply_len = -1;
} else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
if (hostapd_ctrl_iface_level(hapd, &from, fromlen,
buf + 6))
reply_len = -1;
} else if (os_strncmp(buf, "NEW_STA ", 8) == 0) {
if (hostapd_ctrl_iface_new_sta(hapd, buf + 8))
reply_len = -1;
} else if (os_strncmp(buf, "DEAUTHENTICATE ", 15) == 0) {
if (hostapd_ctrl_iface_deauthenticate(hapd, buf + 15))
reply_len = -1;
} else if (os_strncmp(buf, "DISASSOCIATE ", 13) == 0) {
if (hostapd_ctrl_iface_disassociate(hapd, buf + 13))
reply_len = -1;
#ifdef CONFIG_IEEE80211W
#ifdef NEED_AP_MLME
} else if (os_strncmp(buf, "SA_QUERY ", 9) == 0) {
if (hostapd_ctrl_iface_sa_query(hapd, buf + 9))
reply_len = -1;
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
} else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
if (hostapd_ctrl_iface_wps_pin(hapd, buf + 8))
reply_len = -1;
} else if (os_strncmp(buf, "WPS_CHECK_PIN ", 14) == 0) {
reply_len = hostapd_ctrl_iface_wps_check_pin(
hapd, buf + 14, reply, reply_size);
} else if (os_strcmp(buf, "WPS_PBC") == 0) {
if (hostapd_wps_button_pushed(hapd, NULL))
reply_len = -1;
} else if (os_strcmp(buf, "WPS_CANCEL") == 0) {
if (hostapd_wps_cancel(hapd))
reply_len = -1;
} else if (os_strncmp(buf, "WPS_AP_PIN ", 11) == 0) {
reply_len = hostapd_ctrl_iface_wps_ap_pin(hapd, buf + 11,
reply, reply_size);
} else if (os_strncmp(buf, "WPS_CONFIG ", 11) == 0) {
if (hostapd_ctrl_iface_wps_config(hapd, buf + 11) < 0)
reply_len = -1;
} else if (os_strncmp(buf, "WPS_GET_STATUS", 13) == 0) {
reply_len = hostapd_ctrl_iface_wps_get_status(hapd, reply,
reply_size);
#ifdef CONFIG_WPS_NFC
} else if (os_strncmp(buf, "WPS_NFC_TAG_READ ", 17) == 0) {
if (hostapd_ctrl_iface_wps_nfc_tag_read(hapd, buf + 17))
reply_len = -1;
} else if (os_strncmp(buf, "WPS_NFC_CONFIG_TOKEN ", 21) == 0) {
reply_len = hostapd_ctrl_iface_wps_nfc_config_token(
hapd, buf + 21, reply, reply_size);
} else if (os_strncmp(buf, "WPS_NFC_TOKEN ", 14) == 0) {
reply_len = hostapd_ctrl_iface_wps_nfc_token(
hapd, buf + 14, reply, reply_size);
} else if (os_strncmp(buf, "NFC_GET_HANDOVER_SEL ", 21) == 0) {
reply_len = hostapd_ctrl_iface_nfc_get_handover_sel(
hapd, buf + 21, reply, reply_size);
} else if (os_strncmp(buf, "NFC_REPORT_HANDOVER ", 20) == 0) {
if (hostapd_ctrl_iface_nfc_report_handover(hapd, buf + 20))
reply_len = -1;
#endif /* CONFIG_WPS_NFC */
#endif /* CONFIG_WPS */
#ifdef CONFIG_INTERWORKING
} else if (os_strncmp(buf, "SET_QOS_MAP_SET ", 16) == 0) {
if (hostapd_ctrl_iface_set_qos_map_set(hapd, buf + 16))
reply_len = -1;
} else if (os_strncmp(buf, "SEND_QOS_MAP_CONF ", 18) == 0) {
if (hostapd_ctrl_iface_send_qos_map_conf(hapd, buf + 18))
reply_len = -1;
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
} else if (os_strncmp(buf, "HS20_WNM_NOTIF ", 15) == 0) {
if (hostapd_ctrl_iface_hs20_wnm_notif(hapd, buf + 15))
reply_len = -1;
} else if (os_strncmp(buf, "HS20_DEAUTH_REQ ", 16) == 0) {
if (hostapd_ctrl_iface_hs20_deauth_req(hapd, buf + 16))
reply_len = -1;
#endif /* CONFIG_HS20 */
#ifdef CONFIG_WNM
} else if (os_strncmp(buf, "DISASSOC_IMMINENT ", 18) == 0) {
if (hostapd_ctrl_iface_disassoc_imminent(hapd, buf + 18))
reply_len = -1;
} else if (os_strncmp(buf, "ESS_DISASSOC ", 13) == 0) {
if (hostapd_ctrl_iface_ess_disassoc(hapd, buf + 13))
reply_len = -1;
#endif /* CONFIG_WNM */
} else if (os_strcmp(buf, "GET_CONFIG") == 0) {
reply_len = hostapd_ctrl_iface_get_config(hapd, reply,
reply_size);
} else if (os_strncmp(buf, "SET ", 4) == 0) {
if (hostapd_ctrl_iface_set(hapd, buf + 4))
reply_len = -1;
} else if (os_strncmp(buf, "GET ", 4) == 0) {
reply_len = hostapd_ctrl_iface_get(hapd, buf + 4, reply,
reply_size);
} else if (os_strncmp(buf, "ENABLE", 6) == 0) {
if (hostapd_ctrl_iface_enable(hapd->iface))
reply_len = -1;
} else if (os_strncmp(buf, "RELOAD", 6) == 0) {
if (hostapd_ctrl_iface_reload(hapd->iface))
reply_len = -1;
} else if (os_strncmp(buf, "DISABLE", 7) == 0) {
if (hostapd_ctrl_iface_disable(hapd->iface))
reply_len = -1;
#ifdef CONFIG_TESTING_OPTIONS
} else if (os_strncmp(buf, "RADAR ", 6) == 0) {
if (hostapd_ctrl_iface_radar(hapd, buf + 6))
reply_len = -1;
} else if (os_strncmp(buf, "MGMT_TX ", 8) == 0) {
if (hostapd_ctrl_iface_mgmt_tx(hapd, buf + 8))
reply_len = -1;
#endif /* CONFIG_TESTING_OPTIONS */
} else if (os_strncmp(buf, "CHAN_SWITCH ", 12) == 0) {
if (hostapd_ctrl_iface_chan_switch(hapd->iface, buf + 12))
reply_len = -1;
} else if (os_strncmp(buf, "VENDOR ", 7) == 0) {
reply_len = hostapd_ctrl_iface_vendor(hapd, buf + 7, reply,
reply_size);
} else {
os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
reply_len = 16;
}
if (reply_len < 0) {
os_memcpy(reply, "FAIL\n", 5);
reply_len = 5;
}
sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen);
os_free(reply);
}
static char * hostapd_ctrl_iface_path(struct hostapd_data *hapd)
{
char *buf;
size_t len;
if (hapd->conf->ctrl_interface == NULL)
return NULL;
len = os_strlen(hapd->conf->ctrl_interface) +
os_strlen(hapd->conf->iface) + 2;
buf = os_malloc(len);
if (buf == NULL)
return NULL;
os_snprintf(buf, len, "%s/%s",
hapd->conf->ctrl_interface, hapd->conf->iface);
buf[len - 1] = '\0';
return buf;
}
static void hostapd_ctrl_iface_msg_cb(void *ctx, int level, int global,
const char *txt, size_t len)
{
struct hostapd_data *hapd = ctx;
if (hapd == NULL)
return;
hostapd_ctrl_iface_send(hapd, level, txt, len);
}
int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
{
struct sockaddr_un addr;
int s = -1;
char *fname = NULL;
if (hapd->ctrl_sock > -1) {
wpa_printf(MSG_DEBUG, "ctrl_iface already exists!");
return 0;
}
if (hapd->conf->ctrl_interface == NULL)
return 0;
if (mkdir(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
if (errno == EEXIST) {
wpa_printf(MSG_DEBUG, "Using existing control "
"interface directory.");
} else {
perror("mkdir[ctrl_interface]");
goto fail;
}
}
if (hapd->conf->ctrl_interface_gid_set &&
chown(hapd->conf->ctrl_interface, -1,
hapd->conf->ctrl_interface_gid) < 0) {
perror("chown[ctrl_interface]");
return -1;
}
if (!hapd->conf->ctrl_interface_gid_set &&
hapd->iface->interfaces->ctrl_iface_group &&
chown(hapd->conf->ctrl_interface, -1,
hapd->iface->interfaces->ctrl_iface_group) < 0) {
perror("chown[ctrl_interface]");
return -1;
}
#ifdef ANDROID
/*
* Android is using umask 0077 which would leave the control interface
* directory without group access. This breaks things since Wi-Fi
* framework assumes that this directory can be accessed by other
* applications in the wifi group. Fix this by adding group access even
* if umask value would prevent this.
*/
if (chmod(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
wpa_printf(MSG_ERROR, "CTRL: Could not chmod directory: %s",
strerror(errno));
/* Try to continue anyway */
}
#endif /* ANDROID */
if (os_strlen(hapd->conf->ctrl_interface) + 1 +
os_strlen(hapd->conf->iface) >= sizeof(addr.sun_path))
goto fail;
s = socket(PF_UNIX, SOCK_DGRAM, 0);
if (s < 0) {
perror("socket(PF_UNIX)");
goto fail;
}
os_memset(&addr, 0, sizeof(addr));
#ifdef __FreeBSD__
addr.sun_len = sizeof(addr);
#endif /* __FreeBSD__ */
addr.sun_family = AF_UNIX;
fname = hostapd_ctrl_iface_path(hapd);
if (fname == NULL)
goto fail;
os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
strerror(errno));
if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
" allow connections - assuming it was left"
"over from forced program termination");
if (unlink(fname) < 0) {
perror("unlink[ctrl_iface]");
wpa_printf(MSG_ERROR, "Could not unlink "
"existing ctrl_iface socket '%s'",
fname);
goto fail;
}
if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
0) {
perror("hostapd-ctrl-iface: bind(PF_UNIX)");
goto fail;
}
wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
"ctrl_iface socket '%s'", fname);
} else {
wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
"be in use - cannot override it");
wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
"not used anymore", fname);
os_free(fname);
fname = NULL;
goto fail;
}
}
if (hapd->conf->ctrl_interface_gid_set &&
chown(fname, -1, hapd->conf->ctrl_interface_gid) < 0) {
perror("chown[ctrl_interface/ifname]");
goto fail;
}
if (!hapd->conf->ctrl_interface_gid_set &&
hapd->iface->interfaces->ctrl_iface_group &&
chown(fname, -1, hapd->iface->interfaces->ctrl_iface_group) < 0) {
perror("chown[ctrl_interface/ifname]");
goto fail;
}
if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
perror("chmod[ctrl_interface/ifname]");
goto fail;
}
os_free(fname);
hapd->ctrl_sock = s;
eloop_register_read_sock(s, hostapd_ctrl_iface_receive, hapd,
NULL);
hapd->msg_ctx = hapd;
wpa_msg_register_cb(hostapd_ctrl_iface_msg_cb);
return 0;
fail:
if (s >= 0)
close(s);
if (fname) {
unlink(fname);
os_free(fname);
}
return -1;
}
void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
{
struct wpa_ctrl_dst *dst, *prev;
if (hapd->ctrl_sock > -1) {
char *fname;
eloop_unregister_read_sock(hapd->ctrl_sock);
close(hapd->ctrl_sock);
hapd->ctrl_sock = -1;
fname = hostapd_ctrl_iface_path(hapd);
if (fname)
unlink(fname);
os_free(fname);
if (hapd->conf->ctrl_interface &&
rmdir(hapd->conf->ctrl_interface) < 0) {
if (errno == ENOTEMPTY) {
wpa_printf(MSG_DEBUG, "Control interface "
"directory not empty - leaving it "
"behind");
} else {
wpa_printf(MSG_ERROR,
"rmdir[ctrl_interface=%s]: %s",
hapd->conf->ctrl_interface,
strerror(errno));
}
}
}
dst = hapd->ctrl_dst;
while (dst) {
prev = dst;
dst = dst->next;
os_free(prev);
}
}
static int hostapd_ctrl_iface_add(struct hapd_interfaces *interfaces,
char *buf)
{
if (hostapd_add_iface(interfaces, buf) < 0) {
wpa_printf(MSG_ERROR, "Adding interface %s failed", buf);
return -1;
}
return 0;
}
static int hostapd_ctrl_iface_remove(struct hapd_interfaces *interfaces,
char *buf)
{
if (hostapd_remove_iface(interfaces, buf) < 0) {
wpa_printf(MSG_ERROR, "Removing interface %s failed", buf);
return -1;
}
return 0;
}
static void hostapd_ctrl_iface_flush(struct hapd_interfaces *interfaces)
{
#ifdef CONFIG_WPS_TESTING
wps_version_number = 0x20;
wps_testing_dummy_cred = 0;
wps_corrupt_pkhash = 0;
#endif /* CONFIG_WPS_TESTING */
}
static void hostapd_global_ctrl_iface_receive(int sock, void *eloop_ctx,
void *sock_ctx)
{
void *interfaces = eloop_ctx;
char buf[256];
int res;
struct sockaddr_un from;
socklen_t fromlen = sizeof(from);
char reply[24];
int reply_len;
res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
(struct sockaddr *) &from, &fromlen);
if (res < 0) {
perror("recvfrom(ctrl_iface)");
return;
}
buf[res] = '\0';
wpa_printf(MSG_DEBUG, "Global ctrl_iface command: %s", buf);
os_memcpy(reply, "OK\n", 3);
reply_len = 3;
if (os_strcmp(buf, "PING") == 0) {
os_memcpy(reply, "PONG\n", 5);
reply_len = 5;
} else if (os_strncmp(buf, "RELOG", 5) == 0) {
if (wpa_debug_reopen_file() < 0)
reply_len = -1;
} else if (os_strcmp(buf, "FLUSH") == 0) {
hostapd_ctrl_iface_flush(interfaces);
} else if (os_strncmp(buf, "ADD ", 4) == 0) {
if (hostapd_ctrl_iface_add(interfaces, buf + 4) < 0)
reply_len = -1;
} else if (os_strncmp(buf, "REMOVE ", 7) == 0) {
if (hostapd_ctrl_iface_remove(interfaces, buf + 7) < 0)
reply_len = -1;
#ifdef CONFIG_MODULE_TESTS
} else if (os_strcmp(buf, "MODULE_TESTS") == 0) {
int hapd_module_tests(void);
if (hapd_module_tests() < 0)
reply_len = -1;
#endif /* CONFIG_MODULE_TESTS */
} else {
wpa_printf(MSG_DEBUG, "Unrecognized global ctrl_iface command "
"ignored");
reply_len = -1;
}
if (reply_len < 0) {
os_memcpy(reply, "FAIL\n", 5);
reply_len = 5;
}
sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen);
}
static char * hostapd_global_ctrl_iface_path(struct hapd_interfaces *interface)
{
char *buf;
size_t len;
if (interface->global_iface_path == NULL)
return NULL;
len = os_strlen(interface->global_iface_path) +
os_strlen(interface->global_iface_name) + 2;
buf = os_malloc(len);
if (buf == NULL)
return NULL;
os_snprintf(buf, len, "%s/%s", interface->global_iface_path,
interface->global_iface_name);
buf[len - 1] = '\0';
return buf;
}
int hostapd_global_ctrl_iface_init(struct hapd_interfaces *interface)
{
struct sockaddr_un addr;
int s = -1;
char *fname = NULL;
if (interface->global_iface_path == NULL) {
wpa_printf(MSG_DEBUG, "ctrl_iface not configured!");
return 0;
}
if (mkdir(interface->global_iface_path, S_IRWXU | S_IRWXG) < 0) {
if (errno == EEXIST) {
wpa_printf(MSG_DEBUG, "Using existing control "
"interface directory.");
} else {
perror("mkdir[ctrl_interface]");
goto fail;
}
} else if (interface->ctrl_iface_group &&
chown(interface->global_iface_path, -1,
interface->ctrl_iface_group) < 0) {
perror("chown[ctrl_interface]");
goto fail;
}
if (os_strlen(interface->global_iface_path) + 1 +
os_strlen(interface->global_iface_name) >= sizeof(addr.sun_path))
goto fail;
s = socket(PF_UNIX, SOCK_DGRAM, 0);
if (s < 0) {
perror("socket(PF_UNIX)");
goto fail;
}
os_memset(&addr, 0, sizeof(addr));
#ifdef __FreeBSD__
addr.sun_len = sizeof(addr);
#endif /* __FreeBSD__ */
addr.sun_family = AF_UNIX;
fname = hostapd_global_ctrl_iface_path(interface);
if (fname == NULL)
goto fail;
os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
strerror(errno));
if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
" allow connections - assuming it was left"
"over from forced program termination");
if (unlink(fname) < 0) {
perror("unlink[ctrl_iface]");
wpa_printf(MSG_ERROR, "Could not unlink "
"existing ctrl_iface socket '%s'",
fname);
goto fail;
}
if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
0) {
perror("bind(PF_UNIX)");
goto fail;
}
wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
"ctrl_iface socket '%s'", fname);
} else {
wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
"be in use - cannot override it");
wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
"not used anymore", fname);
os_free(fname);
fname = NULL;
goto fail;
}
}
if (interface->ctrl_iface_group &&
chown(fname, -1, interface->ctrl_iface_group) < 0) {
perror("chown[ctrl_interface]");
goto fail;
}
if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
perror("chmod[ctrl_interface/ifname]");
goto fail;
}
os_free(fname);
interface->global_ctrl_sock = s;
eloop_register_read_sock(s, hostapd_global_ctrl_iface_receive,
interface, NULL);
return 0;
fail:
if (s >= 0)
close(s);
if (fname) {
unlink(fname);
os_free(fname);
}
return -1;
}
void hostapd_global_ctrl_iface_deinit(struct hapd_interfaces *interfaces)
{
char *fname = NULL;
if (interfaces->global_ctrl_sock > -1) {
eloop_unregister_read_sock(interfaces->global_ctrl_sock);
close(interfaces->global_ctrl_sock);
interfaces->global_ctrl_sock = -1;
fname = hostapd_global_ctrl_iface_path(interfaces);
if (fname) {
unlink(fname);
os_free(fname);
}
if (interfaces->global_iface_path &&
rmdir(interfaces->global_iface_path) < 0) {
if (errno == ENOTEMPTY) {
wpa_printf(MSG_DEBUG, "Control interface "
"directory not empty - leaving it "
"behind");
} else {
wpa_printf(MSG_ERROR,
"rmdir[ctrl_interface=%s]: %s",
interfaces->global_iface_path,
strerror(errno));
}
}
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = NULL;
}
}
static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
const char *buf, size_t len)
{
struct wpa_ctrl_dst *dst, *next;
struct msghdr msg;
int idx;
struct iovec io[2];
char levelstr[10];
dst = hapd->ctrl_dst;
if (hapd->ctrl_sock < 0 || dst == NULL)
return;
os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
io[0].iov_base = levelstr;
io[0].iov_len = os_strlen(levelstr);
io[1].iov_base = (char *) buf;
io[1].iov_len = len;
os_memset(&msg, 0, sizeof(msg));
msg.msg_iov = io;
msg.msg_iovlen = 2;
idx = 0;
while (dst) {
next = dst->next;
if (level >= dst->debug_level) {
wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
(u8 *) dst->addr.sun_path, dst->addrlen -
offsetof(struct sockaddr_un, sun_path));
msg.msg_name = &dst->addr;
msg.msg_namelen = dst->addrlen;
if (sendmsg(hapd->ctrl_sock, &msg, 0) < 0) {
int _errno = errno;
wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: "
"%d - %s",
idx, errno, strerror(errno));
dst->errors++;
if (dst->errors > 10 || _errno == ENOENT) {
hostapd_ctrl_iface_detach(
hapd, &dst->addr,
dst->addrlen);
}
} else
dst->errors = 0;
}
idx++;
dst = next;
}
}
#endif /* CONFIG_NATIVE_WINDOWS */