/* * Copyright (c) 2009, Atheros Communications, Inc. * Copyright (c) 2011-2013, Qualcomm Atheros, Inc. * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #include "includes.h" #include <sys/stat.h> #include "common.h" #include "eloop.h" #include "common/ieee802_11_common.h" #include "common/ieee802_11_defs.h" #include "common/gas.h" #include "common/wpa_ctrl.h" #include "rsn_supp/wpa.h" #include "wpa_supplicant_i.h" #include "driver_i.h" #include "config.h" #include "scan.h" #include "bss.h" #include "blacklist.h" #include "gas_query.h" #include "interworking.h" #include "hs20_supplicant.h" #include "base64.h" #define OSU_MAX_ITEMS 10 struct osu_lang_string { char lang[4]; char text[253]; }; struct osu_icon { u16 width; u16 height; char lang[4]; char icon_type[256]; char filename[256]; unsigned int id; unsigned int failed:1; }; struct osu_provider { u8 bssid[ETH_ALEN]; u8 osu_ssid[SSID_MAX_LEN]; u8 osu_ssid_len; char server_uri[256]; u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */ char osu_nai[256]; struct osu_lang_string friendly_name[OSU_MAX_ITEMS]; size_t friendly_name_count; struct osu_lang_string serv_desc[OSU_MAX_ITEMS]; size_t serv_desc_count; struct osu_icon icon[OSU_MAX_ITEMS]; size_t icon_count; }; void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id) { u8 conf; wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5); wpabuf_put_be24(buf, OUI_WFA); wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE); conf = HS20_VERSION; if (pps_mo_id >= 0) conf |= HS20_PPS_MO_ID_PRESENT; wpabuf_put_u8(buf, conf); if (pps_mo_id >= 0) wpabuf_put_le16(buf, pps_mo_id); } int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, struct wpa_bss *bss) { if (!wpa_s->conf->hs20 || !ssid) return 0; if (ssid->parent_cred) return 1; if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) return 0; /* * This may catch some non-Hotspot 2.0 cases, but it is safer to do that * than cause Hotspot 2.0 connections without indication element getting * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element. */ if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X)) return 0; if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP)) return 0; if (ssid->proto != WPA_PROTO_RSN) return 0; return 1; } int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) { struct wpa_cred *cred; if (ssid == NULL) return 0; if (ssid->update_identifier) return ssid->update_identifier; if (ssid->parent_cred == NULL) return 0; for (cred = wpa_s->conf->cred; cred; cred = cred->next) { if (ssid->parent_cred == cred) return cred->update_identifier; } return 0; } void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len, struct wpabuf *buf) { u8 *len_pos; if (buf == NULL) return; len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC); wpabuf_put_be24(buf, OUI_WFA); wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE); if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) { wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY); wpabuf_put_u8(buf, 0); /* Reserved */ if (payload) wpabuf_put_data(buf, payload, payload_len); } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) { wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST); wpabuf_put_u8(buf, 0); /* Reserved */ if (payload) wpabuf_put_data(buf, payload, payload_len); } else { u8 i; wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST); wpabuf_put_u8(buf, 0); /* Reserved */ for (i = 0; i < 32; i++) { if (stypes & BIT(i)) wpabuf_put_u8(buf, i); } } gas_anqp_set_element_len(buf, len_pos); gas_anqp_set_len(buf); } struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload, size_t payload_len) { struct wpabuf *buf; buf = gas_anqp_build_initial_req(0, 100 + payload_len); if (buf == NULL) return NULL; hs20_put_anqp_req(stypes, payload, payload_len, buf); return buf; } int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes, const u8 *payload, size_t payload_len, int inmem) { struct wpabuf *buf; int ret = 0; int freq; struct wpa_bss *bss; int res; struct icon_entry *icon_entry; bss = wpa_bss_get_bssid(wpa_s, dst); if (!bss) { wpa_printf(MSG_WARNING, "ANQP: Cannot send query to unknown BSS " MACSTR, MAC2STR(dst)); return -1; } wpa_bss_anqp_unshare_alloc(bss); freq = bss->freq; wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for " "subtypes 0x%x", MAC2STR(dst), stypes); buf = hs20_build_anqp_req(stypes, payload, payload_len); if (buf == NULL) return -1; res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); if (res < 0) { wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); wpabuf_free(buf); return -1; } else wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " "%u", res); if (inmem) { icon_entry = os_zalloc(sizeof(struct icon_entry)); if (!icon_entry) return -1; os_memcpy(icon_entry->bssid, dst, ETH_ALEN); icon_entry->file_name = os_malloc(payload_len + 1); if (!icon_entry->file_name) { os_free(icon_entry); return -1; } os_memcpy(icon_entry->file_name, payload, payload_len); icon_entry->file_name[payload_len] = '\0'; icon_entry->dialog_token = res; dl_list_add(&wpa_s->icon_head, &icon_entry->list); } return ret; } static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, const char *file_name) { struct icon_entry *icon; dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 && os_strcmp(icon->file_name, file_name) == 0 && icon->image) return icon; } return NULL; } int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, const char *file_name, size_t offset, size_t size, char *reply, size_t buf_len) { struct icon_entry *icon; size_t out_size; unsigned char *b64; size_t b64_size; int reply_size; wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)", MAC2STR(bssid), file_name, (unsigned int) offset, (unsigned int) size, (unsigned int) buf_len); icon = hs20_find_icon(wpa_s, bssid, file_name); if (!icon || !icon->image || offset >= icon->image_len) return -1; if (size > icon->image_len - offset) size = icon->image_len - offset; out_size = buf_len - 3 /* max base64 padding */; if (size * 4 > out_size * 3) size = out_size * 3 / 4; if (size == 0) return -1; b64 = base64_encode(&icon->image[offset], size, &b64_size); if (buf_len >= b64_size) { os_memcpy(reply, b64, b64_size); reply_size = b64_size; } else { reply_size = -1; } os_free(b64); return reply_size; } static void hs20_free_icon_entry(struct icon_entry *icon) { wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR " dialog_token=%u file_name=%s image_len=%u", MAC2STR(icon->bssid), icon->dialog_token, icon->file_name ? icon->file_name : "N/A", (unsigned int) icon->image_len); os_free(icon->file_name); os_free(icon->image); os_free(icon); } int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, const char *file_name) { struct icon_entry *icon, *tmp; int count = 0; if (!bssid) wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons"); else if (!file_name) wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for " MACSTR, MAC2STR(bssid)); else wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for " MACSTR " file name %s", MAC2STR(bssid), file_name); dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, list) { if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) && (!file_name || os_strcmp(icon->file_name, file_name) == 0)) { dl_list_del(&icon->list); hs20_free_icon_entry(icon); count++; } } return count == 0 ? -1 : 0; } static void hs20_set_osu_access_permission(const char *osu_dir, const char *fname) { struct stat statbuf; /* Get OSU directory information */ if (stat(osu_dir, &statbuf) < 0) { wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s", osu_dir); return; } if (chmod(fname, statbuf.st_mode) < 0) { wpa_printf(MSG_WARNING, "Cannot change the permissions for %s", fname); return; } if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) { wpa_printf(MSG_WARNING, "Cannot change the ownership for %s", fname); } } static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s, struct icon_entry *new_icon) { struct icon_entry *icon, *tmp; dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, list) { if (icon == new_icon) continue; if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 && os_strcmp(icon->file_name, new_icon->file_name) == 0) { dl_list_del(&icon->list); hs20_free_icon_entry(icon); } } } static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s, const u8 *sa, const u8 *pos, size_t slen, u8 dialog_token) { char fname[256]; int png; FILE *f; u16 data_len; struct icon_entry *icon; dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { if (icon->dialog_token == dialog_token && !icon->image && os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) { icon->image = os_malloc(slen); if (!icon->image) return -1; os_memcpy(icon->image, pos, slen); icon->image_len = slen; hs20_remove_duplicate_icons(wpa_s, icon); wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ICON " MACSTR " %s %u", MAC2STR(sa), icon->file_name, (unsigned int) icon->image_len); return 0; } } wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File", MAC2STR(sa)); if (slen < 4) { wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " "value from " MACSTR, MAC2STR(sa)); return -1; } wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos); if (*pos != 0) return -1; pos++; slen--; if ((size_t) 1 + pos[0] > slen) { wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " "value from " MACSTR, MAC2STR(sa)); return -1; } wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]); png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0; slen -= 1 + pos[0]; pos += 1 + pos[0]; if (slen < 2) { wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " "value from " MACSTR, MAC2STR(sa)); return -1; } data_len = WPA_GET_LE16(pos); pos += 2; slen -= 2; if (data_len > slen) { wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " "value from " MACSTR, MAC2STR(sa)); return -1; } wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len); if (wpa_s->conf->osu_dir == NULL) return -1; wpa_s->osu_icon_id++; if (wpa_s->osu_icon_id == 0) wpa_s->osu_icon_id++; snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s", wpa_s->conf->osu_dir, wpa_s->osu_icon_id, png ? "png" : "icon"); f = fopen(fname, "wb"); if (f == NULL) return -1; hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); if (fwrite(pos, slen, 1, f) != 1) { fclose(f); unlink(fname); return -1; } fclose(f); wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname); return 0; } static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx) { struct wpa_supplicant *wpa_s = eloop_ctx; if (wpa_s->fetch_osu_icon_in_progress) hs20_next_osu_icon(wpa_s); } static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res) { size_t i, j; struct os_reltime now, tmp; int dur; os_get_reltime(&now); os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp); dur = tmp.sec * 1000 + tmp.usec / 1000; wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d", dur, res); for (i = 0; i < wpa_s->osu_prov_count; i++) { struct osu_provider *osu = &wpa_s->osu_prov[i]; for (j = 0; j < osu->icon_count; j++) { struct osu_icon *icon = &osu->icon[j]; if (icon->id || icon->failed) continue; if (res < 0) icon->failed = 1; else icon->id = wpa_s->osu_icon_id; return; } } } void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, const u8 *sa, const u8 *data, size_t slen, u8 dialog_token) { const u8 *pos = data; u8 subtype; struct wpa_bss_anqp *anqp = NULL; int ret; if (slen < 2) return; if (bss) anqp = bss->anqp; subtype = *pos++; slen--; pos++; /* Reserved */ slen--; switch (subtype) { case HS20_STYPE_CAPABILITY_LIST: wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " HS Capability List", MAC2STR(sa)); wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); if (anqp) { wpabuf_free(anqp->hs20_capability_list); anqp->hs20_capability_list = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_OPERATOR_FRIENDLY_NAME: wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Operator Friendly Name", MAC2STR(sa)); wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); if (anqp) { wpabuf_free(anqp->hs20_operator_friendly_name); anqp->hs20_operator_friendly_name = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_WAN_METRICS: wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen); if (slen < 13) { wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN " "Metrics value from " MACSTR, MAC2STR(sa)); break; } wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa), pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5), pos[9], pos[10], WPA_GET_LE16(pos + 11)); if (anqp) { wpabuf_free(anqp->hs20_wan_metrics); anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_CONNECTION_CAPABILITY: wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Connection Capability", MAC2STR(sa)); wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); if (anqp) { wpabuf_free(anqp->hs20_connection_capability); anqp->hs20_connection_capability = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_OPERATING_CLASS: wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Operating Class", MAC2STR(sa)); wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); if (anqp) { wpabuf_free(anqp->hs20_operating_class); anqp->hs20_operating_class = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_OSU_PROVIDERS_LIST: wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " OSU Providers list", MAC2STR(sa)); wpa_s->num_prov_found++; if (anqp) { wpabuf_free(anqp->hs20_osu_providers_list); anqp->hs20_osu_providers_list = wpabuf_alloc_copy(pos, slen); } break; case HS20_STYPE_ICON_BINARY_FILE: ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen, dialog_token); if (wpa_s->fetch_osu_icon_in_progress) { hs20_osu_icon_fetch_result(wpa_s, ret); eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); } break; default: wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); break; } } void hs20_notify_parse_done(struct wpa_supplicant *wpa_s) { if (!wpa_s->fetch_osu_icon_in_progress) return; if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL)) return; /* * We are going through icon fetch, but no icon response was received. * Assume this means the current AP could not provide an answer to avoid * getting stuck in fetch iteration. */ hs20_icon_fetch_failed(wpa_s); } static void hs20_free_osu_prov_entry(struct osu_provider *prov) { } void hs20_free_osu_prov(struct wpa_supplicant *wpa_s) { size_t i; for (i = 0; i < wpa_s->osu_prov_count; i++) hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]); os_free(wpa_s->osu_prov); wpa_s->osu_prov = NULL; wpa_s->osu_prov_count = 0; } static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s) { char fname[256]; FILE *f; size_t i, j; wpa_s->fetch_osu_info = 0; wpa_s->fetch_osu_icon_in_progress = 0; if (wpa_s->conf->osu_dir == NULL) { hs20_free_osu_prov(wpa_s); wpa_s->fetch_anqp_in_progress = 0; return; } snprintf(fname, sizeof(fname), "%s/osu-providers.txt", wpa_s->conf->osu_dir); f = fopen(fname, "w"); if (f == NULL) { hs20_free_osu_prov(wpa_s); wpa_s->fetch_anqp_in_progress = 0; return; } hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); for (i = 0; i < wpa_s->osu_prov_count; i++) { struct osu_provider *osu = &wpa_s->osu_prov[i]; if (i > 0) fprintf(f, "\n"); fprintf(f, "OSU-PROVIDER " MACSTR "\n" "uri=%s\n" "methods=%08x\n", MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods); if (osu->osu_ssid_len) { fprintf(f, "osu_ssid=%s\n", wpa_ssid_txt(osu->osu_ssid, osu->osu_ssid_len)); } if (osu->osu_nai[0]) fprintf(f, "osu_nai=%s\n", osu->osu_nai); for (j = 0; j < osu->friendly_name_count; j++) { fprintf(f, "friendly_name=%s:%s\n", osu->friendly_name[j].lang, osu->friendly_name[j].text); } for (j = 0; j < osu->serv_desc_count; j++) { fprintf(f, "desc=%s:%s\n", osu->serv_desc[j].lang, osu->serv_desc[j].text); } for (j = 0; j < osu->icon_count; j++) { struct osu_icon *icon = &osu->icon[j]; if (icon->failed) continue; /* could not fetch icon */ fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n", icon->id, icon->width, icon->height, icon->lang, icon->icon_type, icon->filename); } } fclose(f); hs20_free_osu_prov(wpa_s); wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed"); wpa_s->fetch_anqp_in_progress = 0; } void hs20_next_osu_icon(struct wpa_supplicant *wpa_s) { size_t i, j; wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon"); for (i = 0; i < wpa_s->osu_prov_count; i++) { struct osu_provider *osu = &wpa_s->osu_prov[i]; for (j = 0; j < osu->icon_count; j++) { struct osu_icon *icon = &osu->icon[j]; if (icon->id || icon->failed) continue; wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' " "from " MACSTR, icon->filename, MAC2STR(osu->bssid)); os_get_reltime(&wpa_s->osu_icon_fetch_start); if (hs20_anqp_send_req(wpa_s, osu->bssid, BIT(HS20_STYPE_ICON_REQUEST), (u8 *) icon->filename, os_strlen(icon->filename), 0) < 0) { icon->failed = 1; continue; } return; } } wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch"); hs20_osu_fetch_done(wpa_s); } static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, const u8 *osu_ssid, u8 osu_ssid_len, const u8 *pos, size_t len) { struct osu_provider *prov; const u8 *end = pos + len; u16 len2; const u8 *pos2; u8 uri_len, osu_method_len, osu_nai_len; wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len); prov = os_realloc_array(wpa_s->osu_prov, wpa_s->osu_prov_count + 1, sizeof(*prov)); if (prov == NULL) return; wpa_s->osu_prov = prov; prov = &prov[wpa_s->osu_prov_count]; os_memset(prov, 0, sizeof(*prov)); os_memcpy(prov->bssid, bss->bssid, ETH_ALEN); os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len); prov->osu_ssid_len = osu_ssid_len; /* OSU Friendly Name Length */ if (end - pos < 2) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " "Friendly Name Length"); return; } len2 = WPA_GET_LE16(pos); pos += 2; if (len2 > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " "Friendly Name Duples"); return; } pos2 = pos; pos += len2; /* OSU Friendly Name Duples */ while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) { struct osu_lang_string *f; if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) { wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name"); break; } f = &prov->friendly_name[prov->friendly_name_count++]; os_memcpy(f->lang, pos2 + 1, 3); os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3); pos2 += 1 + pos2[0]; } /* OSU Server URI */ if (end - pos < 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server URI length"); return; } uri_len = *pos++; if (uri_len > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server " "URI"); return; } os_memcpy(prov->server_uri, pos, uri_len); pos += uri_len; /* OSU Method list */ if (end - pos < 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " "list length"); return; } osu_method_len = pos[0]; if (osu_method_len > end - pos - 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " "list"); return; } pos2 = pos + 1; pos += 1 + osu_method_len; while (pos2 < pos) { if (*pos2 < 32) prov->osu_methods |= BIT(*pos2); pos2++; } /* Icons Available Length */ if (end - pos < 2) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " "Available Length"); return; } len2 = WPA_GET_LE16(pos); pos += 2; if (len2 > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " "Available"); return; } pos2 = pos; pos += len2; /* Icons Available */ while (pos2 < pos) { struct osu_icon *icon = &prov->icon[prov->icon_count]; u8 flen; if (2 + 2 + 3 + 1 + 1 > pos - pos2) { wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata"); break; } icon->width = WPA_GET_LE16(pos2); pos2 += 2; icon->height = WPA_GET_LE16(pos2); pos2 += 2; os_memcpy(icon->lang, pos2, 3); pos2 += 3; flen = *pos2++; if (flen > pos - pos2) { wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type"); break; } os_memcpy(icon->icon_type, pos2, flen); pos2 += flen; if (pos - pos2 < 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " "Filename length"); break; } flen = *pos2++; if (flen > pos - pos2) { wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " "Filename"); break; } os_memcpy(icon->filename, pos2, flen); pos2 += flen; prov->icon_count++; } /* OSU_NAI */ if (end - pos < 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); return; } osu_nai_len = *pos++; if (osu_nai_len > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); return; } os_memcpy(prov->osu_nai, pos, osu_nai_len); pos += osu_nai_len; /* OSU Service Description Length */ if (end - pos < 2) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " "Service Description Length"); return; } len2 = WPA_GET_LE16(pos); pos += 2; if (len2 > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " "Service Description Duples"); return; } pos2 = pos; pos += len2; /* OSU Service Description Duples */ while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) { struct osu_lang_string *f; u8 descr_len; descr_len = *pos2++; if (descr_len > pos - pos2 || descr_len < 3) { wpa_printf(MSG_DEBUG, "Invalid OSU Service " "Description"); break; } f = &prov->serv_desc[prov->serv_desc_count++]; os_memcpy(f->lang, pos2, 3); os_memcpy(f->text, pos2 + 3, descr_len - 3); pos2 += descr_len; } wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR, MAC2STR(bss->bssid)); wpa_s->osu_prov_count++; } void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s) { struct wpa_bss *bss; struct wpabuf *prov_anqp; const u8 *pos, *end; u16 len; const u8 *osu_ssid; u8 osu_ssid_len; u8 num_providers; hs20_free_osu_prov(wpa_s); dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { if (bss->anqp == NULL) continue; prov_anqp = bss->anqp->hs20_osu_providers_list; if (prov_anqp == NULL) continue; wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from " MACSTR, MAC2STR(bss->bssid)); wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list", prov_anqp); pos = wpabuf_head(prov_anqp); end = pos + wpabuf_len(prov_anqp); /* OSU SSID */ if (end - pos < 1) continue; if (1 + pos[0] > end - pos) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " "OSU SSID"); continue; } osu_ssid_len = *pos++; if (osu_ssid_len > SSID_MAX_LEN) { wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID " "Length %u", osu_ssid_len); continue; } osu_ssid = pos; pos += osu_ssid_len; if (end - pos < 1) { wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " "Number of OSU Providers"); continue; } num_providers = *pos++; wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u", num_providers); /* OSU Providers */ while (end - pos > 2 && num_providers > 0) { num_providers--; len = WPA_GET_LE16(pos); pos += 2; if (len > (unsigned int) (end - pos)) break; hs20_osu_add_prov(wpa_s, bss, osu_ssid, osu_ssid_len, pos, len); pos += len; } if (pos != end) { wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of " "extra data after OSU Providers", (int) (end - pos)); } } wpa_s->fetch_osu_icon_in_progress = 1; hs20_next_osu_icon(wpa_s); } static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res) { wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed"); if (!wpa_s->fetch_osu_waiting_scan) { wpa_printf(MSG_DEBUG, "OSU fetch have been canceled"); return; } wpa_s->network_select = 0; wpa_s->fetch_all_anqp = 1; wpa_s->fetch_osu_info = 1; wpa_s->fetch_osu_icon_in_progress = 0; interworking_start_fetch_anqp(wpa_s); } int hs20_fetch_osu(struct wpa_supplicant *wpa_s) { if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " "interface disabled"); return -1; } if (wpa_s->scanning) { wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " "scanning"); return -1; } if (wpa_s->conf->osu_dir == NULL) { wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " "osu_dir not configured"); return -1; } if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) { wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " "fetch in progress (%d, %d)", wpa_s->fetch_anqp_in_progress, wpa_s->network_select); return -1; } wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch"); wpa_s->num_osu_scans = 0; wpa_s->num_prov_found = 0; hs20_start_osu_scan(wpa_s); return 0; } void hs20_start_osu_scan(struct wpa_supplicant *wpa_s) { wpa_s->fetch_osu_waiting_scan = 1; wpa_s->num_osu_scans++; wpa_s->scan_req = MANUAL_SCAN_REQ; wpa_s->scan_res_handler = hs20_osu_scan_res_handler; wpa_supplicant_req_scan(wpa_s, 0, 0); } void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s) { wpa_printf(MSG_DEBUG, "Cancel OSU fetch"); interworking_stop_fetch_anqp(wpa_s); wpa_s->fetch_osu_waiting_scan = 0; wpa_s->network_select = 0; wpa_s->fetch_osu_info = 0; wpa_s->fetch_osu_icon_in_progress = 0; } void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s) { hs20_osu_icon_fetch_result(wpa_s, -1); eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); } void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s, const char *url, u8 osu_method) { if (url) wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s", osu_method, url); else wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION); } void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code, u16 reauth_delay, const char *url) { if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled"); return; } wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s", code, reauth_delay, url); if (code == HS20_DEAUTH_REASON_CODE_BSS) { wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist"); wpa_blacklist_add(wpa_s, wpa_s->bssid); /* TODO: For now, disable full ESS since some drivers may not * support disabling per BSS. */ if (wpa_s->current_ssid) { struct os_reltime now; os_get_reltime(&now); if (now.sec + reauth_delay <= wpa_s->current_ssid->disabled_until.sec) return; wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)", reauth_delay); wpa_s->current_ssid->disabled_until.sec = now.sec + reauth_delay; } } if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) { struct os_reltime now; os_get_reltime(&now); if (now.sec + reauth_delay <= wpa_s->current_ssid->disabled_until.sec) return; wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds", reauth_delay); wpa_s->current_ssid->disabled_until.sec = now.sec + reauth_delay; } } void hs20_init(struct wpa_supplicant *wpa_s) { dl_list_init(&wpa_s->icon_head); } void hs20_deinit(struct wpa_supplicant *wpa_s) { eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); hs20_free_osu_prov(wpa_s); if (wpa_s->icon_head.next) hs20_del_icon(wpa_s, NULL, NULL); }