/* * hostapd / UNIX domain socket -based control interface * Copyright (c) 2004-2015, Jouni Malinen * * 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 #ifdef CONFIG_TESTING_OPTIONS #include #include #endif /* CONFIG_TESTING_OPTIONS */ #include #include #include #include "utils/common.h" #include "utils/eloop.h" #include "common/version.h" #include "common/ieee802_11_defs.h" #include "crypto/tls.h" #include "drivers/driver.h" #include "eapol_auth/eapol_auth_sm.h" #include "radius/radius_client.h" #include "radius/radius_server.h" #include "l2_packet/l2_packet.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 "ap/beacon.h" #include "wps/wps_defs.h" #include "wps/wps.h" #include "fst/fst_ctrl_iface.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, enum wpa_msg_type type, 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 (os_snprintf_error(buflen, ret)) return -1; return ret; } } ret = os_snprintf(buf, buflen, "%s", pin); if (os_snprintf_error(buflen, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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; /* [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); } static int hostapd_ctrl_iface_bss_tm_req(struct hostapd_data *hapd, const char *cmd) { u8 addr[ETH_ALEN]; const char *pos, *end; int disassoc_timer = 0; struct sta_info *sta; u8 req_mode = 0, valid_int = 0x01; u8 bss_term_dur[12]; char *url = NULL; int ret; u8 nei_rep[1000]; u8 *nei_pos = nei_rep; if (hwaddr_aton(cmd, addr)) { wpa_printf(MSG_DEBUG, "Invalid STA MAC address"); return -1; } sta = ap_get_sta(hapd, addr); if (sta == NULL) { wpa_printf(MSG_DEBUG, "Station " MACSTR " not found for BSS TM Request message", MAC2STR(addr)); return -1; } pos = os_strstr(cmd, " disassoc_timer="); if (pos) { pos += 16; disassoc_timer = atoi(pos); if (disassoc_timer < 0 || disassoc_timer > 65535) { wpa_printf(MSG_DEBUG, "Invalid disassoc_timer"); return -1; } } pos = os_strstr(cmd, " valid_int="); if (pos) { pos += 11; valid_int = atoi(pos); } pos = os_strstr(cmd, " bss_term="); if (pos) { pos += 10; req_mode |= WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED; /* TODO: TSF configurable/learnable */ bss_term_dur[0] = 4; /* Subelement ID */ bss_term_dur[1] = 10; /* Length */ os_memset(bss_term_dur, 2, 8); end = os_strchr(pos, ','); if (end == NULL) { wpa_printf(MSG_DEBUG, "Invalid bss_term data"); return -1; } end++; WPA_PUT_LE16(&bss_term_dur[10], atoi(end)); } /* * BSS Transition Candidate List Entries - Neighbor Report elements * neighbor=,,, * ,[,] */ pos = cmd; while (pos) { u8 *nei_start; long int val; char *endptr, *tmp; pos = os_strstr(pos, " neighbor="); if (!pos) break; if (nei_pos + 15 > nei_rep + sizeof(nei_rep)) { wpa_printf(MSG_DEBUG, "Not enough room for additional neighbor"); return -1; } pos += 10; nei_start = nei_pos; *nei_pos++ = WLAN_EID_NEIGHBOR_REPORT; nei_pos++; /* length to be filled in */ if (hwaddr_aton(pos, nei_pos)) { wpa_printf(MSG_DEBUG, "Invalid BSSID"); return -1; } nei_pos += ETH_ALEN; pos += 17; if (*pos != ',') { wpa_printf(MSG_DEBUG, "Missing BSSID Information"); return -1; } pos++; val = strtol(pos, &endptr, 0); WPA_PUT_LE32(nei_pos, val); nei_pos += 4; if (*endptr != ',') { wpa_printf(MSG_DEBUG, "Missing Operating Class"); return -1; } pos = endptr + 1; *nei_pos++ = atoi(pos); /* Operating Class */ pos = os_strchr(pos, ','); if (pos == NULL) { wpa_printf(MSG_DEBUG, "Missing Channel Number"); return -1; } pos++; *nei_pos++ = atoi(pos); /* Channel Number */ pos = os_strchr(pos, ','); if (pos == NULL) { wpa_printf(MSG_DEBUG, "Missing PHY Type"); return -1; } pos++; *nei_pos++ = atoi(pos); /* PHY Type */ end = os_strchr(pos, ' '); tmp = os_strchr(pos, ','); if (tmp && (!end || tmp < end)) { /* Optional Subelements (hexdump) */ size_t len; pos = tmp + 1; end = os_strchr(pos, ' '); if (end) len = end - pos; else len = os_strlen(pos); if (nei_pos + len / 2 > nei_rep + sizeof(nei_rep)) { wpa_printf(MSG_DEBUG, "Not enough room for neighbor subelements"); return -1; } if (len & 0x01 || hexstr2bin(pos, nei_pos, len / 2) < 0) { wpa_printf(MSG_DEBUG, "Invalid neighbor subelement info"); return -1; } nei_pos += len / 2; pos = end; } nei_start[1] = nei_pos - nei_start - 2; } pos = os_strstr(cmd, " url="); if (pos) { size_t len; pos += 5; end = os_strchr(pos, ' '); if (end) len = end - pos; else len = os_strlen(pos); url = os_malloc(len + 1); if (url == NULL) return -1; os_memcpy(url, pos, len); url[len] = '\0'; req_mode |= WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT; } if (os_strstr(cmd, " pref=1")) req_mode |= WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED; if (os_strstr(cmd, " abridged=1")) req_mode |= WNM_BSS_TM_REQ_ABRIDGED; if (os_strstr(cmd, " disassoc_imminent=1")) req_mode |= WNM_BSS_TM_REQ_DISASSOC_IMMINENT; ret = wnm_send_bss_tm_req(hapd, sta, req_mode, disassoc_timer, valid_int, bss_term_dur, url, nei_pos > nei_rep ? nei_rep : NULL, nei_pos - nei_rep); os_free(url); return ret; } #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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) return pos - buf; pos += ret; if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) { ret = os_snprintf(pos, end - pos, "WPA-PSK "); if (os_snprintf_error(end - pos, ret)) return pos - buf; pos += ret; } if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) { ret = os_snprintf(pos, end - pos, "WPA-EAP "); if (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) return pos - buf; pos += ret; } #endif /* CONFIG_SAE */ if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) { ret = os_snprintf(pos, end - pos, "WPA-EAP-SUITE-B "); if (os_snprintf_error(end - pos, ret)) return pos - buf; pos += ret; } if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { ret = os_snprintf(pos, end - pos, "WPA-EAP-SUITE-B-192 "); if (os_snprintf_error(end - pos, ret)) return pos - buf; pos += ret; } ret = os_snprintf(pos, end - pos, "\n"); if (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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 (os_snprintf_error(end - pos, ret)) 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); } else if (os_strcasecmp(cmd, "ext_eapol_frame_io") == 0) { hapd->ext_eapol_frame_io = 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 (os_snprintf_error(buflen, res)) return -1; return res; } else if (os_strcmp(cmd, "tls_library") == 0) { res = tls_get_library_version(buf, buflen); if (os_snprintf_error(buflen, res)) 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; } static int hostapd_ctrl_iface_eapol_rx(struct hostapd_data *hapd, char *cmd) { char *pos; u8 src[ETH_ALEN], *buf; int used; size_t len; wpa_printf(MSG_DEBUG, "External EAPOL RX: %s", cmd); pos = cmd; used = hwaddr_aton2(pos, src); if (used < 0) return -1; pos += used; while (*pos == ' ') pos++; len = os_strlen(pos); if (len & 1) return -1; len /= 2; buf = os_malloc(len); if (buf == NULL) return -1; if (hexstr2bin(pos, buf, len) < 0) { os_free(buf); return -1; } ieee802_1x_receive(hapd, src, buf, len); os_free(buf); return 0; } static u16 ipv4_hdr_checksum(const void *buf, size_t len) { size_t i; u32 sum = 0; const u16 *pos = buf; for (i = 0; i < len / 2; i++) sum += *pos++; while (sum >> 16) sum = (sum & 0xffff) + (sum >> 16); return sum ^ 0xffff; } #define HWSIM_PACKETLEN 1500 #define HWSIM_IP_LEN (HWSIM_PACKETLEN - sizeof(struct ether_header)) void hostapd_data_test_rx(void *ctx, const u8 *src_addr, const u8 *buf, size_t len) { struct hostapd_data *hapd = ctx; const struct ether_header *eth; struct iphdr ip; const u8 *pos; unsigned int i; if (len != HWSIM_PACKETLEN) return; eth = (const struct ether_header *) buf; os_memcpy(&ip, eth + 1, sizeof(ip)); pos = &buf[sizeof(*eth) + sizeof(ip)]; if (ip.ihl != 5 || ip.version != 4 || ntohs(ip.tot_len) != HWSIM_IP_LEN) return; for (i = 0; i < HWSIM_IP_LEN - sizeof(ip); i++) { if (*pos != (u8) i) return; pos++; } wpa_msg(hapd->msg_ctx, MSG_INFO, "DATA-TEST-RX " MACSTR " " MACSTR, MAC2STR(eth->ether_dhost), MAC2STR(eth->ether_shost)); } static int hostapd_ctrl_iface_data_test_config(struct hostapd_data *hapd, char *cmd) { int enabled = atoi(cmd); char *pos; const char *ifname; if (!enabled) { if (hapd->l2_test) { l2_packet_deinit(hapd->l2_test); hapd->l2_test = NULL; wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: Disabled"); } return 0; } if (hapd->l2_test) return 0; pos = os_strstr(cmd, " ifname="); if (pos) ifname = pos + 8; else ifname = hapd->conf->iface; hapd->l2_test = l2_packet_init(ifname, hapd->own_addr, ETHERTYPE_IP, hostapd_data_test_rx, hapd, 1); if (hapd->l2_test == NULL) return -1; wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: Enabled"); return 0; } static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd) { u8 dst[ETH_ALEN], src[ETH_ALEN]; char *pos; int used; long int val; u8 tos; u8 buf[2 + HWSIM_PACKETLEN]; struct ether_header *eth; struct iphdr *ip; u8 *dpos; unsigned int i; if (hapd->l2_test == NULL) return -1; /* format: */ pos = cmd; used = hwaddr_aton2(pos, dst); if (used < 0) return -1; pos += used; while (*pos == ' ') pos++; used = hwaddr_aton2(pos, src); if (used < 0) return -1; pos += used; val = strtol(pos, NULL, 0); if (val < 0 || val > 0xff) return -1; tos = val; eth = (struct ether_header *) &buf[2]; os_memcpy(eth->ether_dhost, dst, ETH_ALEN); os_memcpy(eth->ether_shost, src, ETH_ALEN); eth->ether_type = htons(ETHERTYPE_IP); ip = (struct iphdr *) (eth + 1); os_memset(ip, 0, sizeof(*ip)); ip->ihl = 5; ip->version = 4; ip->ttl = 64; ip->tos = tos; ip->tot_len = htons(HWSIM_IP_LEN); ip->protocol = 1; ip->saddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 1); ip->daddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 2); ip->check = ipv4_hdr_checksum(ip, sizeof(*ip)); dpos = (u8 *) (ip + 1); for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++) *dpos++ = i; if (l2_packet_send(hapd->l2_test, dst, ETHERTYPE_IP, &buf[2], HWSIM_PACKETLEN) < 0) return -1; wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX dst=" MACSTR " src=" MACSTR " tos=0x%x", MAC2STR(dst), MAC2STR(src), tos); return 0; } static int hostapd_ctrl_iface_data_test_frame(struct hostapd_data *hapd, char *cmd) { u8 *buf; struct ether_header *eth; struct l2_packet_data *l2 = NULL; size_t len; u16 ethertype; int res = -1; const char *ifname = hapd->conf->iface; if (os_strncmp(cmd, "ifname=", 7) == 0) { cmd += 7; ifname = cmd; cmd = os_strchr(cmd, ' '); if (cmd == NULL) return -1; *cmd++ = '\0'; } len = os_strlen(cmd); if (len & 1 || len < ETH_HLEN * 2) return -1; len /= 2; buf = os_malloc(len); if (buf == NULL) return -1; if (hexstr2bin(cmd, buf, len) < 0) goto done; eth = (struct ether_header *) buf; ethertype = ntohs(eth->ether_type); l2 = l2_packet_init(ifname, hapd->own_addr, ethertype, hostapd_data_test_rx, hapd, 1); if (l2 == NULL) goto done; res = l2_packet_send(l2, eth->ether_dhost, ethertype, buf, len); wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX frame res=%d", res); done: if (l2) l2_packet_deinit(l2); os_free(buf); return res < 0 ? -1 : 0; } static int hostapd_ctrl_test_alloc_fail(struct hostapd_data *hapd, char *cmd) { #ifdef WPA_TRACE_BFD extern char wpa_trace_fail_func[256]; extern unsigned int wpa_trace_fail_after; char *pos; wpa_trace_fail_after = atoi(cmd); pos = os_strchr(cmd, ':'); if (pos) { pos++; os_strlcpy(wpa_trace_fail_func, pos, sizeof(wpa_trace_fail_func)); } else { wpa_trace_fail_after = 0; } return 0; #else /* WPA_TRACE_BFD */ return -1; #endif /* WPA_TRACE_BFD */ } static int hostapd_ctrl_get_alloc_fail(struct hostapd_data *hapd, char *buf, size_t buflen) { #ifdef WPA_TRACE_BFD extern char wpa_trace_fail_func[256]; extern unsigned int wpa_trace_fail_after; return os_snprintf(buf, buflen, "%u:%s", wpa_trace_fail_after, wpa_trace_fail_func); #else /* WPA_TRACE_BFD */ return -1; #endif /* WPA_TRACE_BFD */ } static int hostapd_ctrl_test_fail(struct hostapd_data *hapd, char *cmd) { #ifdef WPA_TRACE_BFD extern char wpa_trace_test_fail_func[256]; extern unsigned int wpa_trace_test_fail_after; char *pos; wpa_trace_test_fail_after = atoi(cmd); pos = os_strchr(cmd, ':'); if (pos) { pos++; os_strlcpy(wpa_trace_test_fail_func, pos, sizeof(wpa_trace_test_fail_func)); } else { wpa_trace_test_fail_after = 0; } return 0; #else /* WPA_TRACE_BFD */ return -1; #endif /* WPA_TRACE_BFD */ } static int hostapd_ctrl_get_fail(struct hostapd_data *hapd, char *buf, size_t buflen) { #ifdef WPA_TRACE_BFD extern char wpa_trace_test_fail_func[256]; extern unsigned int wpa_trace_test_fail_after; return os_snprintf(buf, buflen, "%u:%s", wpa_trace_test_fail_after, wpa_trace_test_fail_func); #else /* WPA_TRACE_BFD */ return -1; #endif /* WPA_TRACE_BFD */ } #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 = 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 int hostapd_ctrl_iface_eapol_reauth(struct hostapd_data *hapd, const char *cmd) { u8 addr[ETH_ALEN]; struct sta_info *sta; if (hwaddr_aton(cmd, addr)) return -1; sta = ap_get_sta(hapd, addr); if (!sta || !sta->eapol_sm) return -1; eapol_auth_reauthenticate(sta->eapol_sm); return 0; } static int hostapd_ctrl_iface_eapol_set(struct hostapd_data *hapd, char *cmd) { u8 addr[ETH_ALEN]; struct sta_info *sta; char *pos = cmd, *param; if (hwaddr_aton(pos, addr) || pos[17] != ' ') return -1; pos += 18; param = pos; pos = os_strchr(pos, ' '); if (!pos) return -1; *pos++ = '\0'; sta = ap_get_sta(hapd, addr); if (!sta || !sta->eapol_sm) return -1; return eapol_auth_set_conf(sta->eapol_sm, param, pos); } 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) { wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s", strerror(errno)); 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) { if (sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from, fromlen) < 0) { wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s", strerror(errno)); } 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; } else if (os_strcmp(buf, "STOP_AP") == 0) { if (hostapd_ctrl_iface_stop_ap(hapd)) 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; } else if (os_strncmp(buf, "BSS_TM_REQ ", 11) == 0) { if (hostapd_ctrl_iface_bss_tm_req(hapd, buf + 11)) 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; } else if (os_strcmp(buf, "UPDATE_BEACON") == 0) { if (ieee802_11_set_beacon(hapd)) 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; } else if (os_strncmp(buf, "EAPOL_RX ", 9) == 0) { if (hostapd_ctrl_iface_eapol_rx(hapd, buf + 9) < 0) reply_len = -1; } else if (os_strncmp(buf, "DATA_TEST_CONFIG ", 17) == 0) { if (hostapd_ctrl_iface_data_test_config(hapd, buf + 17) < 0) reply_len = -1; } else if (os_strncmp(buf, "DATA_TEST_TX ", 13) == 0) { if (hostapd_ctrl_iface_data_test_tx(hapd, buf + 13) < 0) reply_len = -1; } else if (os_strncmp(buf, "DATA_TEST_FRAME ", 16) == 0) { if (hostapd_ctrl_iface_data_test_frame(hapd, buf + 16) < 0) reply_len = -1; } else if (os_strncmp(buf, "TEST_ALLOC_FAIL ", 16) == 0) { if (hostapd_ctrl_test_alloc_fail(hapd, buf + 16) < 0) reply_len = -1; } else if (os_strcmp(buf, "GET_ALLOC_FAIL") == 0) { reply_len = hostapd_ctrl_get_alloc_fail(hapd, reply, reply_size); } else if (os_strncmp(buf, "TEST_FAIL ", 10) == 0) { if (hostapd_ctrl_test_fail(hapd, buf + 10) < 0) reply_len = -1; } else if (os_strcmp(buf, "GET_FAIL") == 0) { reply_len = hostapd_ctrl_get_fail(hapd, reply, reply_size); #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 if (os_strcmp(buf, "ERP_FLUSH") == 0) { ieee802_1x_erp_flush(hapd); #ifdef RADIUS_SERVER radius_server_erp_flush(hapd->radius_srv); #endif /* RADIUS_SERVER */ } else if (os_strncmp(buf, "EAPOL_REAUTH ", 13) == 0) { if (hostapd_ctrl_iface_eapol_reauth(hapd, buf + 13)) reply_len = -1; } else if (os_strncmp(buf, "EAPOL_SET ", 10) == 0) { if (hostapd_ctrl_iface_eapol_set(hapd, buf + 10)) reply_len = -1; } else { os_memcpy(reply, "UNKNOWN COMMAND\n", 16); reply_len = 16; } if (reply_len < 0) { os_memcpy(reply, "FAIL\n", 5); reply_len = 5; } if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen) < 0) { wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s", strerror(errno)); } 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, enum wpa_msg_type type, const char *txt, size_t len) { struct hostapd_data *hapd = ctx; if (hapd == NULL) return; hostapd_ctrl_iface_send(hapd, level, type, 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 { wpa_printf(MSG_ERROR, "mkdir[ctrl_interface]: %s", strerror(errno)); goto fail; } } if (hapd->conf->ctrl_interface_gid_set && chown(hapd->conf->ctrl_interface, -1, hapd->conf->ctrl_interface_gid) < 0) { wpa_printf(MSG_ERROR, "chown[ctrl_interface]: %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "chown[ctrl_interface]: %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "Could not unlink existing ctrl_iface socket '%s': %s", fname, strerror(errno)); goto fail; } if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { wpa_printf(MSG_ERROR, "hostapd-ctrl-iface: bind(PF_UNIX): %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "chown[ctrl_interface/ifname]: %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "chown[ctrl_interface/ifname]: %s", strerror(errno)); goto fail; } if (chmod(fname, S_IRWXU | S_IRWXG) < 0) { wpa_printf(MSG_ERROR, "chmod[ctrl_interface/ifname]: %s", strerror(errno)); goto fail; } os_free(fname); hapd->ctrl_sock = s; if (eloop_register_read_sock(s, hostapd_ctrl_iface_receive, hapd, NULL) < 0) { hostapd_ctrl_iface_deinit(hapd); return -1; } 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; hapd->ctrl_dst = NULL; while (dst) { prev = dst; dst = dst->next; os_free(prev); } #ifdef CONFIG_TESTING_OPTIONS l2_packet_deinit(hapd->l2_test); hapd->l2_test = NULL; #endif /* CONFIG_TESTING_OPTIONS */ } 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 int hostapd_global_ctrl_iface_attach(struct hapd_interfaces *interfaces, 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 = interfaces->global_ctrl_dst; interfaces->global_ctrl_dst = dst; wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached (global)", from->sun_path, fromlen - offsetof(struct sockaddr_un, sun_path)); return 0; } static int hostapd_global_ctrl_iface_detach(struct hapd_interfaces *interfaces, struct sockaddr_un *from, socklen_t fromlen) { struct wpa_ctrl_dst *dst, *prev = NULL; dst = interfaces->global_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 (global)", from->sun_path, fromlen - offsetof(struct sockaddr_un, sun_path)); if (prev == NULL) interfaces->global_ctrl_dst = dst->next; else prev->next = dst->next; os_free(dst); return 0; } prev = dst; dst = dst->next; } return -1; } 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 */ } #ifdef CONFIG_FST static int hostapd_global_ctrl_iface_fst_attach(struct hapd_interfaces *interfaces, const char *cmd) { char ifname[IFNAMSIZ + 1]; struct fst_iface_cfg cfg; struct hostapd_data *hapd; struct fst_wpa_obj iface_obj; if (!fst_parse_attach_command(cmd, ifname, sizeof(ifname), &cfg)) { hapd = hostapd_get_iface(interfaces, ifname); if (hapd) { fst_hostapd_fill_iface_obj(hapd, &iface_obj); hapd->iface->fst = fst_attach(ifname, hapd->own_addr, &iface_obj, &cfg); if (hapd->iface->fst) return 0; } } return EINVAL; } static int hostapd_global_ctrl_iface_fst_detach(struct hapd_interfaces *interfaces, const char *cmd) { char ifname[IFNAMSIZ + 1]; struct hostapd_data * hapd; if (!fst_parse_detach_command(cmd, ifname, sizeof(ifname))) { hapd = hostapd_get_iface(interfaces, ifname); if (hapd) { if (!fst_iface_detach(ifname)) { hapd->iface->fst = NULL; return 0; } } } return EINVAL; } #endif /* CONFIG_FST */ 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; int reply_len; const int reply_size = 4096; res = recvfrom(sock, buf, sizeof(buf) - 1, 0, (struct sockaddr *) &from, &fromlen); if (res < 0) { wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s", strerror(errno)); return; } buf[res] = '\0'; wpa_printf(MSG_DEBUG, "Global ctrl_iface command: %s", buf); reply = os_malloc(reply_size); if (reply == NULL) { if (sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from, fromlen) < 0) { wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s", strerror(errno)); } 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, "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; } else if (os_strcmp(buf, "ATTACH") == 0) { if (hostapd_global_ctrl_iface_attach(interfaces, &from, fromlen)) reply_len = -1; } else if (os_strcmp(buf, "DETACH") == 0) { if (hostapd_global_ctrl_iface_detach(interfaces, &from, fromlen)) 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 */ #ifdef CONFIG_FST } else if (os_strncmp(buf, "FST-ATTACH ", 11) == 0) { if (!hostapd_global_ctrl_iface_fst_attach(interfaces, buf + 11)) reply_len = os_snprintf(reply, reply_size, "OK\n"); else reply_len = -1; } else if (os_strncmp(buf, "FST-DETACH ", 11) == 0) { if (!hostapd_global_ctrl_iface_fst_detach(interfaces, buf + 11)) reply_len = os_snprintf(reply, reply_size, "OK\n"); else reply_len = -1; } else if (os_strncmp(buf, "FST-MANAGER ", 12) == 0) { reply_len = fst_ctrl_iface_receive(buf + 12, reply, reply_size); #endif /* CONFIG_FST */ } 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; } if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen) < 0) { wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s", strerror(errno)); } os_free(reply); } 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 { wpa_printf(MSG_ERROR, "mkdir[ctrl_interface]: %s", strerror(errno)); goto fail; } } else if (interface->ctrl_iface_group && chown(interface->global_iface_path, -1, interface->ctrl_iface_group) < 0) { wpa_printf(MSG_ERROR, "chown[ctrl_interface]: %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "Could not unlink existing ctrl_iface socket '%s': %s", fname, strerror(errno)); goto fail; } if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { wpa_printf(MSG_ERROR, "bind(PF_UNIX): %s", strerror(errno)); 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) { wpa_printf(MSG_ERROR, "chown[ctrl_interface]: %s", strerror(errno)); goto fail; } if (chmod(fname, S_IRWXU | S_IRWXG) < 0) { wpa_printf(MSG_ERROR, "chmod[ctrl_interface/ifname]: %s", strerror(errno)); 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; struct wpa_ctrl_dst *dst, *prev; 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; dst = interfaces->global_ctrl_dst; interfaces->global_ctrl_dst = NULL; while (dst) { prev = dst; dst = dst->next; os_free(prev); } } static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level, enum wpa_msg_type type, const char *buf, size_t len) { struct wpa_ctrl_dst *dst, *next; struct msghdr msg; int idx; struct iovec io[2]; char levelstr[10]; int s; if (type != WPA_MSG_ONLY_GLOBAL) { s = hapd->ctrl_sock; dst = hapd->ctrl_dst; } else { s = hapd->iface->interfaces->global_ctrl_sock; dst = hapd->iface->interfaces->global_ctrl_dst; } if (s < 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(s, &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) { if (type != WPA_MSG_ONLY_GLOBAL) hostapd_ctrl_iface_detach( hapd, &dst->addr, dst->addrlen); else hostapd_global_ctrl_iface_detach( hapd->iface->interfaces, &dst->addr, dst->addrlen); } } else dst->errors = 0; } idx++; dst = next; } } #endif /* CONFIG_NATIVE_WINDOWS */