ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/common/dpp.c b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/common/dpp.c
new file mode 100644
index 0000000..3b9f35e
--- /dev/null
+++ b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/common/dpp.c
@@ -0,0 +1,5190 @@
+/*
+ * DPP functionality shared between hostapd and wpa_supplicant
+ * Copyright (c) 2017, Qualcomm Atheros, Inc.
+ * Copyright (c) 2018-2020, The Linux Foundation
+ * Copyright (c) 2021-2022, Qualcomm Innovation Center, Inc.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+
+#include "utils/common.h"
+#include "utils/base64.h"
+#include "utils/json.h"
+#include "utils/ip_addr.h"
+#include "common/ieee802_11_common.h"
+#include "common/wpa_ctrl.h"
+#include "common/gas.h"
+#include "eap_common/eap_defs.h"
+#include "crypto/crypto.h"
+#include "crypto/random.h"
+#include "crypto/aes.h"
+#include "crypto/aes_siv.h"
+#include "drivers/driver.h"
+#include "dpp.h"
+#include "dpp_i.h"
+
+
+#ifdef CONFIG_TESTING_OPTIONS
+#ifdef CONFIG_DPP3
+int dpp_version_override = 3;
+#elif defined(CONFIG_DPP2)
+int dpp_version_override = 2;
+#else
+int dpp_version_override = 1;
+#endif
+enum dpp_test_behavior dpp_test = DPP_TEST_DISABLED;
+#endif /* CONFIG_TESTING_OPTIONS */
+
+
+void dpp_auth_fail(struct dpp_authentication *auth, const char *txt)
+{
+ wpa_msg(auth->msg_ctx, MSG_INFO, DPP_EVENT_FAIL "%s", txt);
+}
+
+
+struct wpabuf * dpp_alloc_msg(enum dpp_public_action_frame_type type,
+ size_t len)
+{
+ struct wpabuf *msg;
+
+ msg = wpabuf_alloc(8 + len);
+ if (!msg)
+ return NULL;
+ wpabuf_put_u8(msg, WLAN_ACTION_PUBLIC);
+ wpabuf_put_u8(msg, WLAN_PA_VENDOR_SPECIFIC);
+ wpabuf_put_be24(msg, OUI_WFA);
+ wpabuf_put_u8(msg, DPP_OUI_TYPE);
+ wpabuf_put_u8(msg, 1); /* Crypto Suite */
+ wpabuf_put_u8(msg, type);
+ return msg;
+}
+
+
+const u8 * dpp_get_attr(const u8 *buf, size_t len, u16 req_id, u16 *ret_len)
+{
+ u16 id, alen;
+ const u8 *pos = buf, *end = buf + len;
+
+ while (end - pos >= 4) {
+ id = WPA_GET_LE16(pos);
+ pos += 2;
+ alen = WPA_GET_LE16(pos);
+ pos += 2;
+ if (alen > end - pos)
+ return NULL;
+ if (id == req_id) {
+ *ret_len = alen;
+ return pos;
+ }
+ pos += alen;
+ }
+
+ return NULL;
+}
+
+
+static const u8 * dpp_get_attr_next(const u8 *prev, const u8 *buf, size_t len,
+ u16 req_id, u16 *ret_len)
+{
+ u16 id, alen;
+ const u8 *pos, *end = buf + len;
+
+ if (!prev)
+ pos = buf;
+ else
+ pos = prev + WPA_GET_LE16(prev - 2);
+ while (end - pos >= 4) {
+ id = WPA_GET_LE16(pos);
+ pos += 2;
+ alen = WPA_GET_LE16(pos);
+ pos += 2;
+ if (alen > end - pos)
+ return NULL;
+ if (id == req_id) {
+ *ret_len = alen;
+ return pos;
+ }
+ pos += alen;
+ }
+
+ return NULL;
+}
+
+
+int dpp_check_attrs(const u8 *buf, size_t len)
+{
+ const u8 *pos, *end;
+ int wrapped_data = 0;
+
+ pos = buf;
+ end = buf + len;
+ while (end - pos >= 4) {
+ u16 id, alen;
+
+ id = WPA_GET_LE16(pos);
+ pos += 2;
+ alen = WPA_GET_LE16(pos);
+ pos += 2;
+ wpa_printf(MSG_MSGDUMP, "DPP: Attribute ID %04x len %u",
+ id, alen);
+ if (alen > end - pos) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Truncated message - not enough room for the attribute - dropped");
+ return -1;
+ }
+ if (wrapped_data) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: An unexpected attribute included after the Wrapped Data attribute");
+ return -1;
+ }
+ if (id == DPP_ATTR_WRAPPED_DATA)
+ wrapped_data = 1;
+ pos += alen;
+ }
+
+ if (end != pos) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unexpected octets (%d) after the last attribute",
+ (int) (end - pos));
+ return -1;
+ }
+
+ return 0;
+}
+
+
+void dpp_bootstrap_info_free(struct dpp_bootstrap_info *info)
+{
+ if (!info)
+ return;
+ os_free(info->uri);
+ os_free(info->info);
+ os_free(info->chan);
+ os_free(info->host);
+ os_free(info->pk);
+ crypto_ec_key_deinit(info->pubkey);
+ str_clear_free(info->configurator_params);
+ os_free(info);
+}
+
+
+const char * dpp_bootstrap_type_txt(enum dpp_bootstrap_type type)
+{
+ switch (type) {
+ case DPP_BOOTSTRAP_QR_CODE:
+ return "QRCODE";
+ case DPP_BOOTSTRAP_PKEX:
+ return "PKEX";
+ case DPP_BOOTSTRAP_NFC_URI:
+ return "NFC-URI";
+ }
+ return "??";
+}
+
+
+static int dpp_uri_valid_info(const char *info)
+{
+ while (*info) {
+ unsigned char val = *info++;
+
+ if (val < 0x20 || val > 0x7e || val == 0x3b)
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static int dpp_clone_uri(struct dpp_bootstrap_info *bi, const char *uri)
+{
+ bi->uri = os_strdup(uri);
+ return bi->uri ? 0 : -1;
+}
+
+
+int dpp_parse_uri_chan_list(struct dpp_bootstrap_info *bi,
+ const char *chan_list)
+{
+ const char *pos = chan_list, *pos2;
+ int opclass = -1, channel, freq;
+
+ while (pos && *pos && *pos != ';') {
+ pos2 = pos;
+ while (*pos2 >= '0' && *pos2 <= '9')
+ pos2++;
+ if (*pos2 == '/') {
+ opclass = atoi(pos);
+ pos = pos2 + 1;
+ }
+ if (opclass <= 0)
+ goto fail;
+ channel = atoi(pos);
+ if (channel <= 0)
+ goto fail;
+ while (*pos >= '0' && *pos <= '9')
+ pos++;
+ freq = ieee80211_chan_to_freq(NULL, opclass, channel);
+ wpa_printf(MSG_DEBUG,
+ "DPP: URI channel-list: opclass=%d channel=%d ==> freq=%d",
+ opclass, channel, freq);
+ bi->channels_listed = true;
+ if (freq < 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Ignore unknown URI channel-list channel (opclass=%d channel=%d)",
+ opclass, channel);
+ } else if (bi->num_freq == DPP_BOOTSTRAP_MAX_FREQ) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Too many channels in URI channel-list - ignore list");
+ bi->num_freq = 0;
+ break;
+ } else {
+ bi->freq[bi->num_freq++] = freq;
+ }
+
+ if (*pos == ';' || *pos == '\0')
+ break;
+ if (*pos != ',')
+ goto fail;
+ pos++;
+ }
+
+ return 0;
+fail:
+ wpa_printf(MSG_DEBUG, "DPP: Invalid URI channel-list");
+ return -1;
+}
+
+
+int dpp_parse_uri_mac(struct dpp_bootstrap_info *bi, const char *mac)
+{
+ if (!mac)
+ return 0;
+
+ if (hwaddr_aton2(mac, bi->mac_addr) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Invalid URI mac");
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "DPP: URI mac: " MACSTR, MAC2STR(bi->mac_addr));
+
+ return 0;
+}
+
+
+int dpp_parse_uri_info(struct dpp_bootstrap_info *bi, const char *info)
+{
+ const char *end;
+
+ if (!info)
+ return 0;
+
+ end = os_strchr(info, ';');
+ if (!end)
+ end = info + os_strlen(info);
+ bi->info = os_malloc(end - info + 1);
+ if (!bi->info)
+ return -1;
+ os_memcpy(bi->info, info, end - info);
+ bi->info[end - info] = '\0';
+ wpa_printf(MSG_DEBUG, "DPP: URI(information): %s", bi->info);
+ if (!dpp_uri_valid_info(bi->info)) {
+ wpa_printf(MSG_DEBUG, "DPP: Invalid URI information payload");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+int dpp_parse_uri_version(struct dpp_bootstrap_info *bi, const char *version)
+{
+#ifdef CONFIG_DPP2
+ if (!version || DPP_VERSION < 2)
+ return 0;
+
+ if (*version == '1')
+ bi->version = 1;
+ else if (*version == '2')
+ bi->version = 2;
+ else if (*version == '3')
+ bi->version = 3;
+ else
+ wpa_printf(MSG_DEBUG, "DPP: Unknown URI version");
+
+ wpa_printf(MSG_DEBUG, "DPP: URI version: %d", bi->version);
+#endif /* CONFIG_DPP2 */
+
+ return 0;
+}
+
+
+static int dpp_parse_uri_pk(struct dpp_bootstrap_info *bi, const char *info)
+{
+ u8 *data;
+ size_t data_len;
+ int res;
+ const char *end;
+
+ end = os_strchr(info, ';');
+ if (!end)
+ return -1;
+
+ data = base64_decode(info, end - info, &data_len);
+ if (!data) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Invalid base64 encoding on URI public-key");
+ return -1;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Base64 decoded URI public-key",
+ data, data_len);
+
+ res = dpp_get_subject_public_key(bi, data, data_len);
+ os_free(data);
+ return res;
+}
+
+
+static int dpp_parse_uri_supported_curves(struct dpp_bootstrap_info *bi,
+ const char *txt)
+{
+ int val;
+
+ if (!txt)
+ return 0;
+
+ val = hex2num(txt[0]);
+ if (val < 0)
+ return -1;
+ bi->supported_curves = val;
+
+ val = hex2num(txt[1]);
+ if (val > 0)
+ bi->supported_curves |= val << 4;
+
+ wpa_printf(MSG_DEBUG, "DPP: URI supported curves: 0x%x",
+ bi->supported_curves);
+
+ return 0;
+}
+
+
+static int dpp_parse_uri_host(struct dpp_bootstrap_info *bi, const char *txt)
+{
+ const char *end;
+ char *port;
+ struct hostapd_ip_addr addr;
+ char buf[100], *pos;
+
+ if (!txt)
+ return 0;
+
+ end = os_strchr(txt, ';');
+ if (!end)
+ end = txt + os_strlen(txt);
+ if (end - txt > (int) sizeof(buf) - 1)
+ return -1;
+ os_memcpy(buf, txt, end - txt);
+ buf[end - txt] = '\0';
+
+ bi->port = DPP_TCP_PORT;
+
+ pos = buf;
+ if (*pos == '[') {
+ pos = &buf[1];
+ port = os_strchr(pos, ']');
+ if (!port)
+ return -1;
+ *port++ = '\0';
+ if (*port == ':')
+ bi->port = atoi(port + 1);
+ }
+
+ if (hostapd_parse_ip_addr(pos, &addr) < 0) {
+ if (buf[0] != '[') {
+ port = os_strrchr(pos, ':');
+ if (port) {
+ *port++ = '\0';
+ bi->port = atoi(port);
+ }
+ }
+ if (hostapd_parse_ip_addr(pos, &addr) < 0) {
+ wpa_printf(MSG_INFO,
+ "DPP: Invalid IP address in URI host entry: %s",
+ pos);
+ return -1;
+ }
+ }
+ os_free(bi->host);
+ bi->host = os_memdup(&addr, sizeof(addr));
+ if (!bi->host)
+ return -1;
+
+ wpa_printf(MSG_DEBUG, "DPP: host: %s port: %u",
+ hostapd_ip_txt(bi->host, buf, sizeof(buf)), bi->port);
+
+ return 0;
+}
+
+
+static struct dpp_bootstrap_info * dpp_parse_uri(const char *uri)
+{
+ const char *pos = uri;
+ const char *end;
+ const char *chan_list = NULL, *mac = NULL, *info = NULL, *pk = NULL;
+ const char *version = NULL, *supported_curves = NULL, *host = NULL;
+ struct dpp_bootstrap_info *bi;
+
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: URI", uri, os_strlen(uri));
+
+ if (os_strncmp(pos, "DPP:", 4) != 0) {
+ wpa_printf(MSG_INFO, "DPP: Not a DPP URI");
+ return NULL;
+ }
+ pos += 4;
+
+ for (;;) {
+ end = os_strchr(pos, ';');
+ if (!end)
+ break;
+
+ if (end == pos) {
+ /* Handle terminating ";;" and ignore unexpected ";"
+ * for parsing robustness. */
+ pos++;
+ continue;
+ }
+
+ if (pos[0] == 'C' && pos[1] == ':' && !chan_list)
+ chan_list = pos + 2;
+ else if (pos[0] == 'M' && pos[1] == ':' && !mac)
+ mac = pos + 2;
+ else if (pos[0] == 'I' && pos[1] == ':' && !info)
+ info = pos + 2;
+ else if (pos[0] == 'K' && pos[1] == ':' && !pk)
+ pk = pos + 2;
+ else if (pos[0] == 'V' && pos[1] == ':' && !version)
+ version = pos + 2;
+ else if (pos[0] == 'B' && pos[1] == ':' && !supported_curves)
+ supported_curves = pos + 2;
+ else if (pos[0] == 'H' && pos[1] == ':' && !host)
+ host = pos + 2;
+ else
+ wpa_hexdump_ascii(MSG_DEBUG,
+ "DPP: Ignore unrecognized URI parameter",
+ pos, end - pos);
+ pos = end + 1;
+ }
+
+ if (!pk) {
+ wpa_printf(MSG_INFO, "DPP: URI missing public-key");
+ return NULL;
+ }
+
+ bi = os_zalloc(sizeof(*bi));
+ if (!bi)
+ return NULL;
+
+ if (dpp_clone_uri(bi, uri) < 0 ||
+ dpp_parse_uri_chan_list(bi, chan_list) < 0 ||
+ dpp_parse_uri_mac(bi, mac) < 0 ||
+ dpp_parse_uri_info(bi, info) < 0 ||
+ dpp_parse_uri_version(bi, version) < 0 ||
+ dpp_parse_uri_supported_curves(bi, supported_curves) < 0 ||
+ dpp_parse_uri_host(bi, host) < 0 ||
+ dpp_parse_uri_pk(bi, pk) < 0) {
+ dpp_bootstrap_info_free(bi);
+ bi = NULL;
+ }
+
+ return bi;
+}
+
+
+void dpp_build_attr_status(struct wpabuf *msg, enum dpp_status_error status)
+{
+ wpa_printf(MSG_DEBUG, "DPP: Status %d", status);
+ wpabuf_put_le16(msg, DPP_ATTR_STATUS);
+ wpabuf_put_le16(msg, 1);
+ wpabuf_put_u8(msg, status);
+}
+
+
+void dpp_build_attr_r_bootstrap_key_hash(struct wpabuf *msg, const u8 *hash)
+{
+ if (hash) {
+ wpa_printf(MSG_DEBUG, "DPP: R-Bootstrap Key Hash");
+ wpabuf_put_le16(msg, DPP_ATTR_R_BOOTSTRAP_KEY_HASH);
+ wpabuf_put_le16(msg, SHA256_MAC_LEN);
+ wpabuf_put_data(msg, hash, SHA256_MAC_LEN);
+ }
+}
+
+
+static int dpp_channel_ok_init(struct hostapd_hw_modes *own_modes,
+ u16 num_modes, unsigned int freq)
+{
+ u16 m;
+ int c, flag;
+
+ if (!own_modes || !num_modes)
+ return 1;
+
+ for (m = 0; m < num_modes; m++) {
+ for (c = 0; c < own_modes[m].num_channels; c++) {
+ if ((unsigned int) own_modes[m].channels[c].freq !=
+ freq)
+ continue;
+ flag = own_modes[m].channels[c].flag;
+ if (!(flag & (HOSTAPD_CHAN_DISABLED |
+ HOSTAPD_CHAN_NO_IR |
+ HOSTAPD_CHAN_RADAR)))
+ return 1;
+ }
+ }
+
+ wpa_printf(MSG_DEBUG, "DPP: Peer channel %u MHz not supported", freq);
+ return 0;
+}
+
+
+static int freq_included(const unsigned int freqs[], unsigned int num,
+ unsigned int freq)
+{
+ while (num > 0) {
+ if (freqs[--num] == freq)
+ return 1;
+ }
+ return 0;
+}
+
+
+static void freq_to_start(unsigned int freqs[], unsigned int num,
+ unsigned int freq)
+{
+ unsigned int i;
+
+ for (i = 0; i < num; i++) {
+ if (freqs[i] == freq)
+ break;
+ }
+ if (i == 0 || i >= num)
+ return;
+ os_memmove(&freqs[1], &freqs[0], i * sizeof(freqs[0]));
+ freqs[0] = freq;
+}
+
+
+static int dpp_channel_intersect(struct dpp_authentication *auth,
+ struct hostapd_hw_modes *own_modes,
+ u16 num_modes)
+{
+ struct dpp_bootstrap_info *peer_bi = auth->peer_bi;
+ unsigned int i, freq;
+
+ for (i = 0; i < peer_bi->num_freq; i++) {
+ freq = peer_bi->freq[i];
+ if (freq_included(auth->freq, auth->num_freq, freq))
+ continue;
+ if (dpp_channel_ok_init(own_modes, num_modes, freq))
+ auth->freq[auth->num_freq++] = freq;
+ }
+ if (!auth->num_freq) {
+ wpa_printf(MSG_INFO,
+ "DPP: No available channels for initiating DPP Authentication");
+ return -1;
+ }
+ auth->curr_freq = auth->freq[0];
+ return 0;
+}
+
+
+static int dpp_channel_local_list(struct dpp_authentication *auth,
+ struct hostapd_hw_modes *own_modes,
+ u16 num_modes)
+{
+ u16 m;
+ int c, flag;
+ unsigned int freq;
+
+ auth->num_freq = 0;
+
+ if (!own_modes || !num_modes) {
+ auth->freq[0] = 2412;
+ auth->freq[1] = 2437;
+ auth->freq[2] = 2462;
+ auth->num_freq = 3;
+ return 0;
+ }
+
+ for (m = 0; m < num_modes; m++) {
+ for (c = 0; c < own_modes[m].num_channels; c++) {
+ freq = own_modes[m].channels[c].freq;
+ flag = own_modes[m].channels[c].flag;
+ if (flag & (HOSTAPD_CHAN_DISABLED |
+ HOSTAPD_CHAN_NO_IR |
+ HOSTAPD_CHAN_RADAR))
+ continue;
+ if (freq_included(auth->freq, auth->num_freq, freq))
+ continue;
+ auth->freq[auth->num_freq++] = freq;
+ if (auth->num_freq == DPP_BOOTSTRAP_MAX_FREQ) {
+ m = num_modes;
+ break;
+ }
+ }
+ }
+
+ return auth->num_freq == 0 ? -1 : 0;
+}
+
+
+int dpp_prepare_channel_list(struct dpp_authentication *auth,
+ unsigned int neg_freq,
+ struct hostapd_hw_modes *own_modes, u16 num_modes)
+{
+ int res;
+ char freqs[DPP_BOOTSTRAP_MAX_FREQ * 6 + 10], *pos, *end;
+ unsigned int i;
+
+ if (!own_modes) {
+ if (!neg_freq)
+ return -1;
+ auth->num_freq = 1;
+ auth->freq[0] = neg_freq;
+ auth->curr_freq = neg_freq;
+ return 0;
+ }
+
+ if (auth->peer_bi->num_freq > 0)
+ res = dpp_channel_intersect(auth, own_modes, num_modes);
+ else
+ res = dpp_channel_local_list(auth, own_modes, num_modes);
+ if (res < 0)
+ return res;
+
+ /* Prioritize 2.4 GHz channels 6, 1, 11 (in this order) to hit the most
+ * likely channels first. */
+ freq_to_start(auth->freq, auth->num_freq, 2462);
+ freq_to_start(auth->freq, auth->num_freq, 2412);
+ freq_to_start(auth->freq, auth->num_freq, 2437);
+
+ auth->freq_idx = 0;
+ auth->curr_freq = auth->freq[0];
+
+ pos = freqs;
+ end = pos + sizeof(freqs);
+ for (i = 0; i < auth->num_freq; i++) {
+ res = os_snprintf(pos, end - pos, " %u", auth->freq[i]);
+ if (os_snprintf_error(end - pos, res))
+ break;
+ pos += res;
+ }
+ *pos = '\0';
+ wpa_printf(MSG_DEBUG, "DPP: Possible frequencies for initiating:%s",
+ freqs);
+
+ return 0;
+}
+
+
+int dpp_gen_uri(struct dpp_bootstrap_info *bi)
+{
+ char macstr[ETH_ALEN * 2 + 10];
+ size_t len;
+ char supp_curves[10];
+ char host[100];
+
+ len = 4; /* "DPP:" */
+ if (bi->chan)
+ len += 3 + os_strlen(bi->chan); /* C:...; */
+ if (is_zero_ether_addr(bi->mac_addr))
+ macstr[0] = '\0';
+ else
+ os_snprintf(macstr, sizeof(macstr), "M:" COMPACT_MACSTR ";",
+ MAC2STR(bi->mac_addr));
+ len += os_strlen(macstr); /* M:...; */
+ if (bi->info)
+ len += 3 + os_strlen(bi->info); /* I:...; */
+#ifdef CONFIG_DPP2
+ len += 4; /* V:2; */
+#endif /* CONFIG_DPP2 */
+ len += 4 + os_strlen(bi->pk); /* K:...;; */
+
+ if (bi->supported_curves) {
+ u8 val = bi->supported_curves;
+
+ if (val & 0xf0) {
+ val = ((val & 0xf0) >> 4) | ((val & 0x0f) << 4);
+ len += os_snprintf(supp_curves, sizeof(supp_curves),
+ "B:%02x;", val);
+ } else {
+ len += os_snprintf(supp_curves, sizeof(supp_curves),
+ "B:%x;", val);
+ }
+ } else {
+ supp_curves[0] = '\0';
+ }
+
+ host[0] = '\0';
+ if (bi->host) {
+ char buf[100];
+ const char *addr;
+
+ addr = hostapd_ip_txt(bi->host, buf, sizeof(buf));
+ if (!addr)
+ return -1;
+ if (bi->port == DPP_TCP_PORT)
+ len += os_snprintf(host, sizeof(host), "H:%s;", addr);
+ else if (bi->host->af == AF_INET)
+ len += os_snprintf(host, sizeof(host), "H:%s:%u;",
+ addr, bi->port);
+ else
+ len += os_snprintf(host, sizeof(host), "H:[%s]:%u;",
+ addr, bi->port);
+ }
+
+ os_free(bi->uri);
+ bi->uri = os_malloc(len + 1);
+ if (!bi->uri)
+ return -1;
+ os_snprintf(bi->uri, len + 1, "DPP:%s%s%s%s%s%s%s%s%s%sK:%s;;",
+ bi->chan ? "C:" : "", bi->chan ? bi->chan : "",
+ bi->chan ? ";" : "",
+ macstr,
+ bi->info ? "I:" : "", bi->info ? bi->info : "",
+ bi->info ? ";" : "",
+ DPP_VERSION == 3 ? "V:3;" :
+ (DPP_VERSION == 2 ? "V:2;" : ""),
+ supp_curves,
+ host,
+ bi->pk);
+ return 0;
+}
+
+
+struct dpp_authentication *
+dpp_alloc_auth(struct dpp_global *dpp, void *msg_ctx)
+{
+ struct dpp_authentication *auth;
+
+ auth = os_zalloc(sizeof(*auth));
+ if (!auth)
+ return NULL;
+ auth->global = dpp;
+ auth->msg_ctx = msg_ctx;
+ auth->conf_resp_status = 255;
+ return auth;
+}
+
+
+static struct wpabuf * dpp_build_conf_req_attr(struct dpp_authentication *auth,
+ const char *json)
+{
+ size_t nonce_len;
+ size_t json_len, clear_len;
+ struct wpabuf *clear = NULL, *msg = NULL, *pe = NULL;
+ u8 *wrapped;
+ size_t attr_len;
+#ifdef CONFIG_DPP3
+ u8 auth_i[DPP_MAX_HASH_LEN];
+#endif /* CONFIG_DPP3 */
+
+ wpa_printf(MSG_DEBUG, "DPP: Build configuration request");
+
+ nonce_len = auth->curve->nonce_len;
+ if (random_get_bytes(auth->e_nonce, nonce_len)) {
+ wpa_printf(MSG_ERROR, "DPP: Failed to generate E-nonce");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: E-nonce", auth->e_nonce, nonce_len);
+ json_len = os_strlen(json);
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: configRequest JSON", json, json_len);
+
+ /* { E-nonce, configAttrib }ke */
+ clear_len = 4 + nonce_len + 4 + json_len;
+#ifdef CONFIG_DPP3
+ if (auth->waiting_new_key) {
+ pe = crypto_ec_key_get_pubkey_point(auth->own_protocol_key, 0);
+ if (!pe)
+ goto fail;
+ clear_len += 4 + wpabuf_len(pe);
+
+ if (dpp_derive_auth_i(auth, auth_i) < 0)
+ goto fail;
+ clear_len += 4 + auth->curve->hash_len;
+ }
+#endif /* CONFIG_DPP3 */
+ clear = wpabuf_alloc(clear_len);
+ attr_len = 4 + clear_len + AES_BLOCK_SIZE;
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_AFTER_WRAPPED_DATA_CONF_REQ)
+ attr_len += 5;
+#endif /* CONFIG_TESTING_OPTIONS */
+ msg = wpabuf_alloc(attr_len);
+ if (!clear || !msg)
+ goto fail;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_NO_E_NONCE_CONF_REQ) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - no E-nonce");
+ goto skip_e_nonce;
+ }
+ if (dpp_test == DPP_TEST_INVALID_E_NONCE_CONF_REQ) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - invalid E-nonce");
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, nonce_len - 1);
+ wpabuf_put_data(clear, auth->e_nonce, nonce_len - 1);
+ goto skip_e_nonce;
+ }
+ if (dpp_test == DPP_TEST_NO_WRAPPED_DATA_CONF_REQ) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - no Wrapped Data");
+ goto skip_wrapped_data;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ /* E-nonce */
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, nonce_len);
+ wpabuf_put_data(clear, auth->e_nonce, nonce_len);
+
+#ifdef CONFIG_TESTING_OPTIONS
+skip_e_nonce:
+ if (dpp_test == DPP_TEST_NO_CONFIG_ATTR_OBJ_CONF_REQ) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - no configAttrib");
+ goto skip_conf_attr_obj;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+#ifdef CONFIG_DPP3
+ if (pe) {
+ wpa_printf(MSG_DEBUG, "DPP: Pe");
+ wpabuf_put_le16(clear, DPP_ATTR_I_PROTOCOL_KEY);
+ wpabuf_put_le16(clear, wpabuf_len(pe));
+ wpabuf_put_buf(clear, pe);
+ }
+ if (auth->waiting_new_key) {
+ wpa_printf(MSG_DEBUG, "DPP: Initiator Authentication Tag");
+ wpabuf_put_le16(clear, DPP_ATTR_I_AUTH_TAG);
+ wpabuf_put_le16(clear, auth->curve->hash_len);
+ wpabuf_put_data(clear, auth_i, auth->curve->hash_len);
+ }
+#endif /* CONFIG_DPP3 */
+
+ /* configAttrib */
+ wpabuf_put_le16(clear, DPP_ATTR_CONFIG_ATTR_OBJ);
+ wpabuf_put_le16(clear, json_len);
+ wpabuf_put_data(clear, json, json_len);
+
+#ifdef CONFIG_TESTING_OPTIONS
+skip_conf_attr_obj:
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ wpabuf_put_le16(msg, DPP_ATTR_WRAPPED_DATA);
+ wpabuf_put_le16(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+ wrapped = wpabuf_put(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+ /* No AES-SIV AD */
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: AES-SIV cleartext", clear);
+ if (aes_siv_encrypt(auth->ke, auth->curve->hash_len,
+ wpabuf_head(clear), wpabuf_len(clear),
+ 0, NULL, NULL, wrapped) < 0)
+ goto fail;
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_AFTER_WRAPPED_DATA_CONF_REQ) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - attr after Wrapped Data");
+ dpp_build_attr_status(msg, DPP_STATUS_OK);
+ }
+skip_wrapped_data:
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ wpa_hexdump_buf(MSG_DEBUG,
+ "DPP: Configuration Request frame attributes", msg);
+out:
+ wpabuf_free(clear);
+ wpabuf_free(pe);
+ return msg;
+
+fail:
+ wpabuf_free(msg);
+ msg = NULL;
+ goto out;
+}
+
+
+void dpp_write_adv_proto(struct wpabuf *buf)
+{
+ /* Advertisement Protocol IE */
+ wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
+ wpabuf_put_u8(buf, 8); /* Length */
+ wpabuf_put_u8(buf, 0x7f);
+ wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
+ wpabuf_put_u8(buf, 5);
+ wpabuf_put_be24(buf, OUI_WFA);
+ wpabuf_put_u8(buf, DPP_OUI_TYPE);
+ wpabuf_put_u8(buf, 0x01);
+}
+
+
+void dpp_write_gas_query(struct wpabuf *buf, struct wpabuf *query)
+{
+ /* GAS Query */
+ wpabuf_put_le16(buf, wpabuf_len(query));
+ wpabuf_put_buf(buf, query);
+}
+
+
+struct wpabuf * dpp_build_conf_req(struct dpp_authentication *auth,
+ const char *json)
+{
+ struct wpabuf *buf, *conf_req;
+
+ conf_req = dpp_build_conf_req_attr(auth, json);
+ if (!conf_req) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No configuration request data available");
+ return NULL;
+ }
+
+ buf = gas_build_initial_req(0, 10 + 2 + wpabuf_len(conf_req));
+ if (!buf) {
+ wpabuf_free(conf_req);
+ return NULL;
+ }
+
+ dpp_write_adv_proto(buf);
+ dpp_write_gas_query(buf, conf_req);
+ wpabuf_free(conf_req);
+ wpa_hexdump_buf(MSG_MSGDUMP, "DPP: GAS Config Request", buf);
+
+ return buf;
+}
+
+
+struct wpabuf * dpp_build_conf_req_helper(struct dpp_authentication *auth,
+ const char *name,
+ enum dpp_netrole netrole,
+ const char *mud_url, int *opclasses,
+ const char *extra_name,
+ const char *extra_value)
+{
+ size_t len, name_len;
+ const char *tech = "infra";
+ const char *dpp_name;
+ struct wpabuf *buf = NULL, *json = NULL;
+ char *csr = NULL;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_INVALID_CONFIG_ATTR_OBJ_CONF_REQ) {
+ static const char *bogus_tech = "knfra";
+
+ wpa_printf(MSG_INFO, "DPP: TESTING - invalid Config Attr");
+ tech = bogus_tech;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ dpp_name = name ? name : "Test";
+ name_len = os_strlen(dpp_name);
+
+ len = 100 + name_len * 6 + 1 + int_array_len(opclasses) * 4;
+ if (mud_url && mud_url[0])
+ len += 10 + os_strlen(mud_url);
+ if (extra_name && extra_value && extra_name[0] && extra_value[0])
+ len += 10 + os_strlen(extra_name) + os_strlen(extra_value);
+#ifdef CONFIG_DPP2
+ if (auth->csr) {
+ size_t csr_len;
+
+ csr = base64_encode_no_lf(wpabuf_head(auth->csr),
+ wpabuf_len(auth->csr), &csr_len);
+ if (!csr)
+ goto fail;
+ len += 30 + csr_len;
+ }
+#endif /* CONFIG_DPP2 */
+ json = wpabuf_alloc(len);
+ if (!json)
+ goto fail;
+
+ json_start_object(json, NULL);
+ if (json_add_string_escape(json, "name", dpp_name, name_len) < 0)
+ goto fail;
+ json_value_sep(json);
+ json_add_string(json, "wi-fi_tech", tech);
+ json_value_sep(json);
+ json_add_string(json, "netRole", dpp_netrole_str(netrole));
+ if (mud_url && mud_url[0]) {
+ json_value_sep(json);
+ json_add_string(json, "mudurl", mud_url);
+ }
+ if (opclasses) {
+ int i;
+
+ json_value_sep(json);
+ json_start_array(json, "bandSupport");
+ for (i = 0; opclasses[i]; i++)
+ wpabuf_printf(json, "%s%u", i ? "," : "", opclasses[i]);
+ json_end_array(json);
+ }
+ if (csr) {
+ json_value_sep(json);
+ json_add_string(json, "pkcs10", csr);
+ }
+ if (extra_name && extra_value && extra_name[0] && extra_value[0]) {
+ json_value_sep(json);
+ wpabuf_printf(json, "\"%s\":%s", extra_name, extra_value);
+ }
+ json_end_object(json);
+
+ buf = dpp_build_conf_req(auth, wpabuf_head(json));
+fail:
+ wpabuf_free(json);
+ os_free(csr);
+
+ return buf;
+}
+
+
+static int bin_str_eq(const char *val, size_t len, const char *cmp)
+{
+ return os_strlen(cmp) == len && os_memcmp(val, cmp, len) == 0;
+}
+
+
+struct dpp_configuration * dpp_configuration_alloc(const char *type)
+{
+ struct dpp_configuration *conf;
+ const char *end;
+ size_t len;
+
+ conf = os_zalloc(sizeof(*conf));
+ if (!conf)
+ goto fail;
+
+ end = os_strchr(type, ' ');
+ if (end)
+ len = end - type;
+ else
+ len = os_strlen(type);
+
+ if (bin_str_eq(type, len, "psk"))
+ conf->akm = DPP_AKM_PSK;
+ else if (bin_str_eq(type, len, "sae"))
+ conf->akm = DPP_AKM_SAE;
+ else if (bin_str_eq(type, len, "psk-sae") ||
+ bin_str_eq(type, len, "psk+sae"))
+ conf->akm = DPP_AKM_PSK_SAE;
+ else if (bin_str_eq(type, len, "sae-dpp") ||
+ bin_str_eq(type, len, "dpp+sae"))
+ conf->akm = DPP_AKM_SAE_DPP;
+ else if (bin_str_eq(type, len, "psk-sae-dpp") ||
+ bin_str_eq(type, len, "dpp+psk+sae"))
+ conf->akm = DPP_AKM_PSK_SAE_DPP;
+ else if (bin_str_eq(type, len, "dpp"))
+ conf->akm = DPP_AKM_DPP;
+ else if (bin_str_eq(type, len, "dot1x"))
+ conf->akm = DPP_AKM_DOT1X;
+ else
+ goto fail;
+
+ return conf;
+fail:
+ dpp_configuration_free(conf);
+ return NULL;
+}
+
+
+int dpp_akm_psk(enum dpp_akm akm)
+{
+ return akm == DPP_AKM_PSK || akm == DPP_AKM_PSK_SAE ||
+ akm == DPP_AKM_PSK_SAE_DPP;
+}
+
+
+int dpp_akm_sae(enum dpp_akm akm)
+{
+ return akm == DPP_AKM_SAE || akm == DPP_AKM_PSK_SAE ||
+ akm == DPP_AKM_SAE_DPP || akm == DPP_AKM_PSK_SAE_DPP;
+}
+
+
+int dpp_akm_legacy(enum dpp_akm akm)
+{
+ return akm == DPP_AKM_PSK || akm == DPP_AKM_PSK_SAE ||
+ akm == DPP_AKM_SAE;
+}
+
+
+int dpp_akm_dpp(enum dpp_akm akm)
+{
+ return akm == DPP_AKM_DPP || akm == DPP_AKM_SAE_DPP ||
+ akm == DPP_AKM_PSK_SAE_DPP;
+}
+
+
+int dpp_akm_ver2(enum dpp_akm akm)
+{
+ return akm == DPP_AKM_SAE_DPP || akm == DPP_AKM_PSK_SAE_DPP;
+}
+
+
+int dpp_configuration_valid(const struct dpp_configuration *conf)
+{
+ if (conf->ssid_len == 0)
+ return 0;
+ if (dpp_akm_psk(conf->akm) && !conf->passphrase && !conf->psk_set)
+ return 0;
+ if (dpp_akm_sae(conf->akm) && !conf->passphrase)
+ return 0;
+ return 1;
+}
+
+
+void dpp_configuration_free(struct dpp_configuration *conf)
+{
+ if (!conf)
+ return;
+ str_clear_free(conf->passphrase);
+ os_free(conf->group_id);
+ os_free(conf->csrattrs);
+ os_free(conf->extra_name);
+ os_free(conf->extra_value);
+ bin_clear_free(conf, sizeof(*conf));
+}
+
+
+static int dpp_configuration_parse_helper(struct dpp_authentication *auth,
+ const char *cmd, int idx)
+{
+ const char *pos, *end;
+ struct dpp_configuration *conf_sta = NULL, *conf_ap = NULL;
+ struct dpp_configuration *conf = NULL;
+ size_t len;
+
+ pos = os_strstr(cmd, " conf=sta-");
+ if (pos) {
+ conf_sta = dpp_configuration_alloc(pos + 10);
+ if (!conf_sta)
+ goto fail;
+ conf_sta->netrole = DPP_NETROLE_STA;
+ conf = conf_sta;
+ }
+
+ pos = os_strstr(cmd, " conf=ap-");
+ if (pos) {
+ conf_ap = dpp_configuration_alloc(pos + 9);
+ if (!conf_ap)
+ goto fail;
+ conf_ap->netrole = DPP_NETROLE_AP;
+ conf = conf_ap;
+ }
+
+ pos = os_strstr(cmd, " conf=configurator");
+ if (pos)
+ auth->provision_configurator = 1;
+
+ if (!conf)
+ return 0;
+
+ pos = os_strstr(cmd, " ssid=");
+ if (pos) {
+ pos += 6;
+ end = os_strchr(pos, ' ');
+ conf->ssid_len = end ? (size_t) (end - pos) : os_strlen(pos);
+ conf->ssid_len /= 2;
+ if (conf->ssid_len > sizeof(conf->ssid) ||
+ hexstr2bin(pos, conf->ssid, conf->ssid_len) < 0)
+ goto fail;
+ } else {
+#ifdef CONFIG_TESTING_OPTIONS
+ /* use a default SSID for legacy testing reasons */
+ os_memcpy(conf->ssid, "test", 4);
+ conf->ssid_len = 4;
+#else /* CONFIG_TESTING_OPTIONS */
+ goto fail;
+#endif /* CONFIG_TESTING_OPTIONS */
+ }
+
+ pos = os_strstr(cmd, " ssid_charset=");
+ if (pos) {
+ if (conf_ap) {
+ wpa_printf(MSG_INFO,
+ "DPP: ssid64 option (ssid_charset param) not allowed for AP enrollee");
+ goto fail;
+ }
+ conf->ssid_charset = atoi(pos + 14);
+ }
+
+ pos = os_strstr(cmd, " pass=");
+ if (pos) {
+ size_t pass_len;
+
+ pos += 6;
+ end = os_strchr(pos, ' ');
+ pass_len = end ? (size_t) (end - pos) : os_strlen(pos);
+ pass_len /= 2;
+ if (pass_len > 63 || pass_len < 8)
+ goto fail;
+ conf->passphrase = os_zalloc(pass_len + 1);
+ if (!conf->passphrase ||
+ hexstr2bin(pos, (u8 *) conf->passphrase, pass_len) < 0)
+ goto fail;
+ }
+
+ pos = os_strstr(cmd, " psk=");
+ if (pos) {
+ pos += 5;
+ if (hexstr2bin(pos, conf->psk, PMK_LEN) < 0)
+ goto fail;
+ conf->psk_set = 1;
+ }
+
+ pos = os_strstr(cmd, " group_id=");
+ if (pos) {
+ size_t group_id_len;
+
+ pos += 10;
+ end = os_strchr(pos, ' ');
+ group_id_len = end ? (size_t) (end - pos) : os_strlen(pos);
+ conf->group_id = os_malloc(group_id_len + 1);
+ if (!conf->group_id)
+ goto fail;
+ os_memcpy(conf->group_id, pos, group_id_len);
+ conf->group_id[group_id_len] = '\0';
+ }
+
+ pos = os_strstr(cmd, " expiry=");
+ if (pos) {
+ long int val;
+
+ pos += 8;
+ val = strtol(pos, NULL, 0);
+ if (val <= 0)
+ goto fail;
+ conf->netaccesskey_expiry = val;
+ }
+
+ pos = os_strstr(cmd, " csrattrs=");
+ if (pos) {
+ pos += 10;
+ end = os_strchr(pos, ' ');
+ len = end ? (size_t) (end - pos) : os_strlen(pos);
+ conf->csrattrs = os_zalloc(len + 1);
+ if (!conf->csrattrs)
+ goto fail;
+ os_memcpy(conf->csrattrs, pos, len);
+ }
+
+ pos = os_strstr(cmd, " conf_extra_name=");
+ if (pos) {
+ pos += 17;
+ end = os_strchr(pos, ' ');
+ len = end ? (size_t) (end - pos) : os_strlen(pos);
+ conf->extra_name = os_zalloc(len + 1);
+ if (!conf->extra_name)
+ goto fail;
+ os_memcpy(conf->extra_name, pos, len);
+ }
+
+ pos = os_strstr(cmd, " conf_extra_value=");
+ if (pos) {
+ pos += 18;
+ end = os_strchr(pos, ' ');
+ len = end ? (size_t) (end - pos) : os_strlen(pos);
+ len /= 2;
+ conf->extra_value = os_zalloc(len + 1);
+ if (!conf->extra_value ||
+ hexstr2bin(pos, (u8 *) conf->extra_value, len) < 0)
+ goto fail;
+ }
+
+ if (!dpp_configuration_valid(conf))
+ goto fail;
+
+ if (idx == 0) {
+ auth->conf_sta = conf_sta;
+ auth->conf_ap = conf_ap;
+ } else if (idx == 1) {
+ if (!auth->conf_sta)
+ auth->conf_sta = conf_sta;
+ else
+ auth->conf2_sta = conf_sta;
+ if (!auth->conf_ap)
+ auth->conf_ap = conf_ap;
+ else
+ auth->conf2_ap = conf_ap;
+ } else {
+ goto fail;
+ }
+ return 0;
+
+fail:
+ dpp_configuration_free(conf_sta);
+ dpp_configuration_free(conf_ap);
+ return -1;
+}
+
+
+static int dpp_configuration_parse(struct dpp_authentication *auth,
+ const char *cmd)
+{
+ const char *pos;
+ char *tmp;
+ size_t len;
+ int res;
+
+ pos = os_strstr(cmd, " @CONF-OBJ-SEP@ ");
+ if (!pos)
+ return dpp_configuration_parse_helper(auth, cmd, 0);
+
+ len = pos - cmd;
+ tmp = os_malloc(len + 1);
+ if (!tmp)
+ goto fail;
+ os_memcpy(tmp, cmd, len);
+ tmp[len] = '\0';
+ res = dpp_configuration_parse_helper(auth, tmp, 0);
+ str_clear_free(tmp);
+ if (res)
+ goto fail;
+ res = dpp_configuration_parse_helper(auth, cmd + len, 1);
+ if (res)
+ goto fail;
+ return 0;
+fail:
+ dpp_configuration_free(auth->conf_sta);
+ dpp_configuration_free(auth->conf2_sta);
+ dpp_configuration_free(auth->conf_ap);
+ dpp_configuration_free(auth->conf2_ap);
+ return -1;
+}
+
+
+static struct dpp_configurator *
+dpp_configurator_get_id(struct dpp_global *dpp, unsigned int id)
+{
+ struct dpp_configurator *conf;
+
+ if (!dpp)
+ return NULL;
+
+ dl_list_for_each(conf, &dpp->configurator,
+ struct dpp_configurator, list) {
+ if (conf->id == id)
+ return conf;
+ }
+ return NULL;
+}
+
+
+int dpp_set_configurator(struct dpp_authentication *auth, const char *cmd)
+{
+ const char *pos;
+ char *tmp = NULL;
+ int ret = -1;
+
+ if (!cmd || auth->configurator_set)
+ return 0;
+ auth->configurator_set = 1;
+
+ if (cmd[0] != ' ') {
+ size_t len;
+
+ len = os_strlen(cmd);
+ tmp = os_malloc(len + 2);
+ if (!tmp)
+ goto fail;
+ tmp[0] = ' ';
+ os_memcpy(tmp + 1, cmd, len + 1);
+ cmd = tmp;
+ }
+
+ wpa_printf(MSG_DEBUG, "DPP: Set configurator parameters: %s", cmd);
+
+ if (os_strstr(cmd, " conf=query")) {
+ auth->configurator_set = 0;
+ auth->use_config_query = true;
+ ret = 0;
+ goto fail;
+ }
+
+ pos = os_strstr(cmd, " configurator=");
+ if (!auth->conf && pos) {
+ pos += 14;
+ auth->conf = dpp_configurator_get_id(auth->global, atoi(pos));
+ if (!auth->conf) {
+ wpa_printf(MSG_INFO,
+ "DPP: Could not find the specified configurator");
+ goto fail;
+ }
+ }
+
+ pos = os_strstr(cmd, " conn_status=");
+ if (pos) {
+ pos += 13;
+ auth->send_conn_status = atoi(pos);
+ }
+
+ pos = os_strstr(cmd, " akm_use_selector=");
+ if (pos) {
+ pos += 18;
+ auth->akm_use_selector = atoi(pos);
+ }
+
+ if (dpp_configuration_parse(auth, cmd) < 0) {
+ wpa_msg(auth->msg_ctx, MSG_INFO,
+ "DPP: Failed to set configurator parameters");
+ goto fail;
+ }
+ ret = 0;
+fail:
+ os_free(tmp);
+ return ret;
+}
+
+
+void dpp_auth_deinit(struct dpp_authentication *auth)
+{
+ unsigned int i;
+
+ if (!auth)
+ return;
+ dpp_configuration_free(auth->conf_ap);
+ dpp_configuration_free(auth->conf2_ap);
+ dpp_configuration_free(auth->conf_sta);
+ dpp_configuration_free(auth->conf2_sta);
+ crypto_ec_key_deinit(auth->own_protocol_key);
+ crypto_ec_key_deinit(auth->peer_protocol_key);
+ crypto_ec_key_deinit(auth->reconfig_old_protocol_key);
+ wpabuf_free(auth->req_msg);
+ wpabuf_free(auth->resp_msg);
+ wpabuf_free(auth->conf_req);
+ wpabuf_free(auth->reconfig_req_msg);
+ wpabuf_free(auth->reconfig_resp_msg);
+ for (i = 0; i < auth->num_conf_obj; i++) {
+ struct dpp_config_obj *conf = &auth->conf_obj[i];
+
+ os_free(conf->connector);
+ wpabuf_free(conf->c_sign_key);
+ wpabuf_free(conf->certbag);
+ wpabuf_free(conf->certs);
+ wpabuf_free(conf->cacert);
+ os_free(conf->server_name);
+ wpabuf_free(conf->pp_key);
+ }
+#ifdef CONFIG_DPP2
+ dpp_free_asymmetric_key(auth->conf_key_pkg);
+ os_free(auth->csrattrs);
+ wpabuf_free(auth->csr);
+ wpabuf_free(auth->priv_key);
+ wpabuf_free(auth->cacert);
+ wpabuf_free(auth->certbag);
+ os_free(auth->trusted_eap_server_name);
+ wpabuf_free(auth->conf_resp_tcp);
+#endif /* CONFIG_DPP2 */
+ wpabuf_free(auth->net_access_key);
+ dpp_bootstrap_info_free(auth->tmp_own_bi);
+ if (auth->tmp_peer_bi) {
+ dl_list_del(&auth->tmp_peer_bi->list);
+ dpp_bootstrap_info_free(auth->tmp_peer_bi);
+ }
+ os_free(auth->e_name);
+ os_free(auth->e_mud_url);
+ os_free(auth->e_band_support);
+#ifdef CONFIG_TESTING_OPTIONS
+ os_free(auth->config_obj_override);
+ os_free(auth->discovery_override);
+ os_free(auth->groups_override);
+#endif /* CONFIG_TESTING_OPTIONS */
+ bin_clear_free(auth, sizeof(*auth));
+}
+
+
+static struct wpabuf *
+dpp_build_conf_start(struct dpp_authentication *auth,
+ struct dpp_configuration *conf, size_t tailroom)
+{
+ struct wpabuf *buf;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->discovery_override)
+ tailroom += os_strlen(auth->discovery_override);
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ buf = wpabuf_alloc(200 + tailroom);
+ if (!buf)
+ return NULL;
+ json_start_object(buf, NULL);
+ json_add_string(buf, "wi-fi_tech", "infra");
+ json_value_sep(buf);
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->discovery_override) {
+ wpa_printf(MSG_DEBUG, "DPP: TESTING - discovery override: '%s'",
+ auth->discovery_override);
+ wpabuf_put_str(buf, "\"discovery\":");
+ wpabuf_put_str(buf, auth->discovery_override);
+ json_value_sep(buf);
+ return buf;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+ json_start_object(buf, "discovery");
+ if (((!conf->ssid_charset || auth->peer_version < 2) &&
+ json_add_string_escape(buf, "ssid", conf->ssid,
+ conf->ssid_len) < 0) ||
+ ((conf->ssid_charset && auth->peer_version >= 2) &&
+ json_add_base64url(buf, "ssid64", conf->ssid,
+ conf->ssid_len) < 0)) {
+ wpabuf_free(buf);
+ return NULL;
+ }
+ if (conf->ssid_charset > 0) {
+ json_value_sep(buf);
+ json_add_int(buf, "ssid_charset", conf->ssid_charset);
+ }
+ json_end_object(buf);
+ json_value_sep(buf);
+
+ return buf;
+}
+
+
+int dpp_build_jwk(struct wpabuf *buf, const char *name,
+ struct crypto_ec_key *key, const char *kid,
+ const struct dpp_curve_params *curve)
+{
+ struct wpabuf *pub;
+ const u8 *pos;
+ int ret = -1;
+
+ pub = crypto_ec_key_get_pubkey_point(key, 0);
+ if (!pub)
+ goto fail;
+
+ json_start_object(buf, name);
+ json_add_string(buf, "kty", "EC");
+ json_value_sep(buf);
+ json_add_string(buf, "crv", curve->jwk_crv);
+ json_value_sep(buf);
+ pos = wpabuf_head(pub);
+ if (json_add_base64url(buf, "x", pos, curve->prime_len) < 0)
+ goto fail;
+ json_value_sep(buf);
+ pos += curve->prime_len;
+ if (json_add_base64url(buf, "y", pos, curve->prime_len) < 0)
+ goto fail;
+ if (kid) {
+ json_value_sep(buf);
+ json_add_string(buf, "kid", kid);
+ }
+ json_end_object(buf);
+ ret = 0;
+fail:
+ wpabuf_free(pub);
+ return ret;
+}
+
+
+static void dpp_build_legacy_cred_params(struct wpabuf *buf,
+ struct dpp_configuration *conf)
+{
+ if (conf->passphrase && os_strlen(conf->passphrase) < 64) {
+ json_add_string_escape(buf, "pass", conf->passphrase,
+ os_strlen(conf->passphrase));
+ } else if (conf->psk_set) {
+ char psk[2 * sizeof(conf->psk) + 1];
+
+ wpa_snprintf_hex(psk, sizeof(psk),
+ conf->psk, sizeof(conf->psk));
+ json_add_string(buf, "psk_hex", psk);
+ forced_memzero(psk, sizeof(psk));
+ }
+}
+
+
+const char * dpp_netrole_str(enum dpp_netrole netrole)
+{
+ switch (netrole) {
+ case DPP_NETROLE_STA:
+ return "sta";
+ case DPP_NETROLE_AP:
+ return "ap";
+ case DPP_NETROLE_CONFIGURATOR:
+ return "configurator";
+ default:
+ return "??";
+ }
+}
+
+
+static bool dpp_supports_curve(const char *curve, struct dpp_bootstrap_info *bi)
+{
+ enum dpp_bootstrap_supported_curves idx;
+
+ if (!bi || !bi->supported_curves)
+ return true; /* no support indication available */
+
+ if (os_strcmp(curve, "prime256v1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_P_256;
+ else if (os_strcmp(curve, "secp384r1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_P_384;
+ else if (os_strcmp(curve, "secp521r1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_P_521;
+ else if (os_strcmp(curve, "brainpoolP256r1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_BP_256;
+ else if (os_strcmp(curve, "brainpoolP384r1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_BP_384;
+ else if (os_strcmp(curve, "brainpoolP512r1") == 0)
+ idx = DPP_BOOTSTRAP_CURVE_BP_512;
+ else
+ return true;
+
+ return bi->supported_curves & BIT(idx);
+}
+
+
+static struct wpabuf *
+dpp_build_conf_obj_dpp(struct dpp_authentication *auth,
+ struct dpp_configuration *conf)
+{
+ struct wpabuf *buf = NULL;
+ char *signed_conn = NULL;
+ size_t tailroom;
+ const struct dpp_curve_params *curve; /* C-sign-key curve */
+ const struct dpp_curve_params *nak_curve; /* netAccessKey curve */
+ struct wpabuf *dppcon = NULL;
+ size_t extra_len = 1000;
+ int incl_legacy;
+ enum dpp_akm akm;
+ const char *akm_str;
+
+ if (!auth->conf) {
+ wpa_printf(MSG_INFO,
+ "DPP: No configurator specified - cannot generate DPP config object");
+ goto fail;
+ }
+ curve = auth->conf->curve;
+ if (dpp_akm_dpp(conf->akm) &&
+ !dpp_supports_curve(curve->name, auth->peer_bi)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Enrollee does not support C-sign-key curve (%s) - cannot generate config object",
+ curve->name);
+ goto fail;
+ }
+ if (auth->new_curve && auth->new_key_received)
+ nak_curve = auth->new_curve;
+ else
+ nak_curve = auth->curve;
+ if (!dpp_supports_curve(nak_curve->name, auth->peer_bi)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Enrollee does not support netAccessKey curve (%s) - cannot generate config object",
+ nak_curve->name);
+ goto fail;
+ }
+
+ akm = conf->akm;
+ if (dpp_akm_ver2(akm) && auth->peer_version < 2) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Convert DPP+legacy credential to DPP-only for peer that does not support version 2");
+ akm = DPP_AKM_DPP;
+ }
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->groups_override)
+ extra_len += os_strlen(auth->groups_override);
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ if (conf->group_id)
+ extra_len += os_strlen(conf->group_id);
+
+ /* Connector (JSON dppCon object) */
+ dppcon = wpabuf_alloc(extra_len + 2 * nak_curve->prime_len * 4 / 3);
+ if (!dppcon)
+ goto fail;
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->groups_override) {
+ wpabuf_put_u8(dppcon, '{');
+ if (auth->groups_override) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: TESTING - groups override: '%s'",
+ auth->groups_override);
+ wpabuf_put_str(dppcon, "\"groups\":");
+ wpabuf_put_str(dppcon, auth->groups_override);
+ json_value_sep(dppcon);
+ }
+ goto skip_groups;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+ json_start_object(dppcon, NULL);
+ json_start_array(dppcon, "groups");
+ json_start_object(dppcon, NULL);
+ json_add_string(dppcon, "groupId",
+ conf->group_id ? conf->group_id : "*");
+ json_value_sep(dppcon);
+ json_add_string(dppcon, "netRole", dpp_netrole_str(conf->netrole));
+ json_end_object(dppcon);
+ json_end_array(dppcon);
+ json_value_sep(dppcon);
+#ifdef CONFIG_TESTING_OPTIONS
+skip_groups:
+#endif /* CONFIG_TESTING_OPTIONS */
+ if (!auth->peer_protocol_key) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No peer protocol key available to build netAccessKey JWK");
+ goto fail;
+ }
+#ifdef CONFIG_DPP3
+ if (auth->conf->net_access_key_curve &&
+ auth->curve != auth->conf->net_access_key_curve &&
+ !auth->new_key_received) {
+ if (!dpp_supports_curve(auth->conf->net_access_key_curve->name,
+ auth->peer_bi)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Enrollee does not support the required netAccessKey curve (%s) - cannot generate config object",
+ auth->conf->net_access_key_curve->name);
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG,
+ "DPP: Peer protocol key curve (%s) does not match the required netAccessKey curve (%s) - %s",
+ auth->curve->name,
+ auth->conf->net_access_key_curve->name,
+ auth->waiting_new_key ?
+ "the required key not received" :
+ "request a new key");
+ if (auth->waiting_new_key)
+ auth->waiting_new_key = false; /* failed */
+ else
+ auth->waiting_new_key = true;
+ goto fail;
+ }
+#endif /* CONFIG_DPP3 */
+ if (dpp_build_jwk(dppcon, "netAccessKey", auth->peer_protocol_key, NULL,
+ nak_curve) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to build netAccessKey JWK");
+ goto fail;
+ }
+ if (conf->netaccesskey_expiry) {
+ struct os_tm tm;
+ char expiry[30];
+
+ if (os_gmtime(conf->netaccesskey_expiry, &tm) < 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Failed to generate expiry string");
+ goto fail;
+ }
+ os_snprintf(expiry, sizeof(expiry),
+ "%04u-%02u-%02uT%02u:%02u:%02uZ",
+ tm.year, tm.month, tm.day,
+ tm.hour, tm.min, tm.sec);
+ json_value_sep(dppcon);
+ json_add_string(dppcon, "expiry", expiry);
+ }
+#ifdef CONFIG_DPP3
+ json_value_sep(dppcon);
+ json_add_int(dppcon, "version", auth->peer_version);
+#endif /* CONFIG_DPP3 */
+ json_end_object(dppcon);
+ wpa_printf(MSG_DEBUG, "DPP: dppCon: %s",
+ (const char *) wpabuf_head(dppcon));
+
+ signed_conn = dpp_sign_connector(auth->conf, dppcon);
+ if (!signed_conn)
+ goto fail;
+
+ incl_legacy = dpp_akm_psk(akm) || dpp_akm_sae(akm);
+ tailroom = 1000;
+ tailroom += 2 * curve->prime_len * 4 / 3 + os_strlen(auth->conf->kid);
+ tailroom += os_strlen(signed_conn);
+ if (incl_legacy)
+ tailroom += 1000;
+ if (akm == DPP_AKM_DOT1X) {
+ if (auth->certbag)
+ tailroom += 2 * wpabuf_len(auth->certbag);
+ if (auth->cacert)
+ tailroom += 2 * wpabuf_len(auth->cacert);
+ if (auth->trusted_eap_server_name)
+ tailroom += os_strlen(auth->trusted_eap_server_name);
+ tailroom += 1000;
+ }
+ if (conf->extra_name && conf->extra_value)
+ tailroom += 10 + os_strlen(conf->extra_name) +
+ os_strlen(conf->extra_value);
+ buf = dpp_build_conf_start(auth, conf, tailroom);
+ if (!buf)
+ goto fail;
+
+ if (auth->akm_use_selector && dpp_akm_ver2(akm))
+ akm_str = dpp_akm_selector_str(akm);
+ else
+ akm_str = dpp_akm_str(akm);
+ json_start_object(buf, "cred");
+ json_add_string(buf, "akm", akm_str);
+ json_value_sep(buf);
+ if (incl_legacy) {
+ dpp_build_legacy_cred_params(buf, conf);
+ json_value_sep(buf);
+ }
+ if (akm == DPP_AKM_DOT1X) {
+ json_start_object(buf, "entCreds");
+ if (!auth->certbag)
+ goto fail;
+ json_add_base64(buf, "certBag", wpabuf_head(auth->certbag),
+ wpabuf_len(auth->certbag));
+ if (auth->cacert) {
+ json_value_sep(buf);
+ json_add_base64(buf, "caCert",
+ wpabuf_head(auth->cacert),
+ wpabuf_len(auth->cacert));
+ }
+ if (auth->trusted_eap_server_name) {
+ json_value_sep(buf);
+ json_add_string(buf, "trustedEapServerName",
+ auth->trusted_eap_server_name);
+ }
+ json_value_sep(buf);
+ json_start_array(buf, "eapMethods");
+ wpabuf_printf(buf, "%d", EAP_TYPE_TLS);
+ json_end_array(buf);
+ json_end_object(buf);
+ json_value_sep(buf);
+ }
+ wpabuf_put_str(buf, "\"signedConnector\":\"");
+ wpabuf_put_str(buf, signed_conn);
+ wpabuf_put_str(buf, "\"");
+ json_value_sep(buf);
+ if (dpp_build_jwk(buf, "csign", auth->conf->csign, auth->conf->kid,
+ curve) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to build csign JWK");
+ goto fail;
+ }
+#ifdef CONFIG_DPP2
+ if (auth->peer_version >= 2 && auth->conf->pp_key) {
+ json_value_sep(buf);
+ if (dpp_build_jwk(buf, "ppKey", auth->conf->pp_key, NULL,
+ curve) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to build ppKey JWK");
+ goto fail;
+ }
+ }
+#endif /* CONFIG_DPP2 */
+
+ json_end_object(buf);
+ if (conf->extra_name && conf->extra_value) {
+ json_value_sep(buf);
+ wpabuf_printf(buf, "\"%s\":%s", conf->extra_name,
+ conf->extra_value);
+ }
+ json_end_object(buf);
+
+ wpa_hexdump_ascii_key(MSG_DEBUG, "DPP: Configuration Object",
+ wpabuf_head(buf), wpabuf_len(buf));
+
+#ifdef CONFIG_DPP3
+ if (!auth->conf->net_access_key_curve) {
+ /* All netAccessKey values used in the network will have to be
+ * from the same curve for network introduction to work, so
+ * hardcode the first used netAccessKey curve for consecutive
+ * operations if there was no explicit configuration of which
+ * curve to use. */
+ wpa_printf(MSG_DEBUG,
+ "DPP: Update Configurator to require netAccessKey curve %s based on first provisioning",
+ nak_curve->name);
+ auth->conf->net_access_key_curve = nak_curve;
+ }
+#endif /* CONFIG_DPP3 */
+
+out:
+ os_free(signed_conn);
+ wpabuf_free(dppcon);
+ return buf;
+fail:
+ wpa_printf(MSG_DEBUG, "DPP: Failed to build configuration object");
+ wpabuf_free(buf);
+ buf = NULL;
+ goto out;
+}
+
+
+static struct wpabuf *
+dpp_build_conf_obj_legacy(struct dpp_authentication *auth,
+ struct dpp_configuration *conf)
+{
+ struct wpabuf *buf;
+ const char *akm_str;
+ size_t len = 1000;
+
+ if (conf->extra_name && conf->extra_value)
+ len += 10 + os_strlen(conf->extra_name) +
+ os_strlen(conf->extra_value);
+ buf = dpp_build_conf_start(auth, conf, len);
+ if (!buf)
+ return NULL;
+
+ if (auth->akm_use_selector && dpp_akm_ver2(conf->akm))
+ akm_str = dpp_akm_selector_str(conf->akm);
+ else
+ akm_str = dpp_akm_str(conf->akm);
+ json_start_object(buf, "cred");
+ json_add_string(buf, "akm", akm_str);
+ json_value_sep(buf);
+ dpp_build_legacy_cred_params(buf, conf);
+ json_end_object(buf);
+ if (conf->extra_name && conf->extra_value) {
+ json_value_sep(buf);
+ wpabuf_printf(buf, "\"%s\":%s", conf->extra_name,
+ conf->extra_value);
+ }
+ json_end_object(buf);
+
+ wpa_hexdump_ascii_key(MSG_DEBUG, "DPP: Configuration Object (legacy)",
+ wpabuf_head(buf), wpabuf_len(buf));
+
+ return buf;
+}
+
+
+static int dpp_get_peer_bi_id(struct dpp_authentication *auth)
+{
+ struct dpp_bootstrap_info *bi;
+
+ if (auth->peer_bi)
+ return auth->peer_bi->id;
+ if (auth->tmp_peer_bi)
+ return auth->tmp_peer_bi->id;
+
+ bi = os_zalloc(sizeof(*bi));
+ if (!bi)
+ return -1;
+ bi->id = dpp_next_id(auth->global);
+ dl_list_add(&auth->global->bootstrap, &bi->list);
+ auth->tmp_peer_bi = bi;
+ return bi->id;
+}
+
+
+static struct wpabuf *
+dpp_build_conf_obj(struct dpp_authentication *auth, enum dpp_netrole netrole,
+ int idx, bool cert_req)
+{
+ struct dpp_configuration *conf = NULL;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->config_obj_override) {
+ if (idx != 0)
+ return NULL;
+ wpa_printf(MSG_DEBUG, "DPP: Testing - Config Object override");
+ return wpabuf_alloc_copy(auth->config_obj_override,
+ os_strlen(auth->config_obj_override));
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ if (idx == 0) {
+ if (netrole == DPP_NETROLE_STA)
+ conf = auth->conf_sta;
+ else if (netrole == DPP_NETROLE_AP)
+ conf = auth->conf_ap;
+ } else if (idx == 1) {
+ if (netrole == DPP_NETROLE_STA)
+ conf = auth->conf2_sta;
+ else if (netrole == DPP_NETROLE_AP)
+ conf = auth->conf2_ap;
+ }
+ if (!conf) {
+ if (idx == 0) {
+ if (auth->use_config_query) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No configuration available for Enrollee(%s) - waiting for configuration",
+ dpp_netrole_str(netrole));
+ auth->waiting_config = true;
+ dpp_get_peer_bi_id(auth);
+ return NULL;
+ }
+ wpa_printf(MSG_DEBUG,
+ "DPP: No configuration available for Enrollee(%s) - reject configuration request",
+ dpp_netrole_str(netrole));
+ }
+ return NULL;
+ }
+
+ if (conf->akm == DPP_AKM_DOT1X) {
+ if (!auth->conf) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No Configurator data available");
+ return NULL;
+ }
+ if (!cert_req && !auth->certbag) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No certificate data available for dot1x configuration");
+ return NULL;
+ }
+ return dpp_build_conf_obj_dpp(auth, conf);
+ }
+ if (dpp_akm_dpp(conf->akm) || (auth->peer_version >= 2 && auth->conf))
+ return dpp_build_conf_obj_dpp(auth, conf);
+ return dpp_build_conf_obj_legacy(auth, conf);
+}
+
+
+struct wpabuf *
+dpp_build_conf_resp(struct dpp_authentication *auth, const u8 *e_nonce,
+ u16 e_nonce_len, enum dpp_netrole netrole, bool cert_req)
+{
+ struct wpabuf *conf = NULL, *conf2 = NULL, *env_data = NULL, *pc = NULL;
+ size_t clear_len, attr_len;
+ struct wpabuf *clear = NULL, *msg = NULL;
+ u8 *wrapped;
+ const u8 *addr[1];
+ size_t len[1];
+ enum dpp_status_error status;
+
+ if (auth->force_conf_resp_status != DPP_STATUS_OK) {
+ status = auth->force_conf_resp_status;
+ goto forced_status;
+ }
+
+ if (netrole == DPP_NETROLE_CONFIGURATOR) {
+#ifdef CONFIG_DPP2
+ env_data = dpp_build_enveloped_data(auth);
+#endif /* CONFIG_DPP2 */
+ } else {
+ conf = dpp_build_conf_obj(auth, netrole, 0, cert_req);
+ if (conf) {
+ wpa_hexdump_ascii(MSG_DEBUG,
+ "DPP: configurationObject JSON",
+ wpabuf_head(conf), wpabuf_len(conf));
+ conf2 = dpp_build_conf_obj(auth, netrole, 1, cert_req);
+ }
+ }
+
+ if (!conf && auth->waiting_config)
+ return NULL;
+ if (conf || env_data)
+ status = DPP_STATUS_OK;
+ else if (!cert_req && netrole == DPP_NETROLE_STA && auth->conf_sta &&
+ auth->conf_sta->akm == DPP_AKM_DOT1X && !auth->waiting_csr)
+ status = DPP_STATUS_CSR_NEEDED;
+#ifdef CONFIG_DPP3
+ else if (auth->waiting_new_key)
+ status = DPP_STATUS_NEW_KEY_NEEDED;
+#endif /* CONFIG_DPP3 */
+ else
+ status = DPP_STATUS_CONFIGURE_FAILURE;
+forced_status:
+ auth->conf_resp_status = status;
+
+ /* { E-nonce, configurationObject[, sendConnStatus]}ke */
+ clear_len = 4 + e_nonce_len;
+ if (conf)
+ clear_len += 4 + wpabuf_len(conf);
+ if (conf2)
+ clear_len += 4 + wpabuf_len(conf2);
+ if (env_data)
+ clear_len += 4 + wpabuf_len(env_data);
+ if (auth->peer_version >= 2 && auth->send_conn_status &&
+ netrole == DPP_NETROLE_STA)
+ clear_len += 4;
+ if (status == DPP_STATUS_CSR_NEEDED && auth->conf_sta &&
+ auth->conf_sta->csrattrs)
+ clear_len += 4 + os_strlen(auth->conf_sta->csrattrs);
+#ifdef CONFIG_DPP3
+ if (status == DPP_STATUS_NEW_KEY_NEEDED) {
+ struct crypto_ec_key *new_pc;
+
+ clear_len += 6; /* Finite Cyclic Group attribute */
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Generate a new own protocol key for the curve %s",
+ auth->conf->net_access_key_curve->name);
+ new_pc = dpp_gen_keypair(auth->conf->net_access_key_curve);
+ if (!new_pc) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to generate new Pc");
+ return NULL;
+ }
+ pc = crypto_ec_key_get_pubkey_point(new_pc, 0);
+ if (!pc) {
+ crypto_ec_key_deinit(new_pc);
+ return NULL;
+ }
+ crypto_ec_key_deinit(auth->own_protocol_key);
+ auth->own_protocol_key = new_pc;
+ auth->new_curve = auth->conf->net_access_key_curve;
+ clear_len += 4 + wpabuf_len(pc);
+ }
+#endif /* CONFIG_DPP3 */
+ clear = wpabuf_alloc(clear_len);
+ attr_len = 4 + 1 + 4 + clear_len + AES_BLOCK_SIZE;
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_AFTER_WRAPPED_DATA_CONF_RESP)
+ attr_len += 5;
+#endif /* CONFIG_TESTING_OPTIONS */
+ msg = wpabuf_alloc(attr_len);
+ if (!clear || !msg)
+ goto fail;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_NO_E_NONCE_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - no E-nonce");
+ goto skip_e_nonce;
+ }
+ if (dpp_test == DPP_TEST_E_NONCE_MISMATCH_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - E-nonce mismatch");
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, e_nonce_len);
+ wpabuf_put_data(clear, e_nonce, e_nonce_len - 1);
+ wpabuf_put_u8(clear, e_nonce[e_nonce_len - 1] ^ 0x01);
+ goto skip_e_nonce;
+ }
+ if (dpp_test == DPP_TEST_NO_WRAPPED_DATA_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - no Wrapped Data");
+ goto skip_wrapped_data;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ /* E-nonce */
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, e_nonce_len);
+ wpabuf_put_data(clear, e_nonce, e_nonce_len);
+
+#ifdef CONFIG_TESTING_OPTIONS
+skip_e_nonce:
+ if (dpp_test == DPP_TEST_NO_CONFIG_OBJ_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - Config Object");
+ goto skip_config_obj;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ if (conf) {
+ wpabuf_put_le16(clear, DPP_ATTR_CONFIG_OBJ);
+ wpabuf_put_le16(clear, wpabuf_len(conf));
+ wpabuf_put_buf(clear, conf);
+ }
+ if (auth->peer_version >= 2 && conf2) {
+ wpabuf_put_le16(clear, DPP_ATTR_CONFIG_OBJ);
+ wpabuf_put_le16(clear, wpabuf_len(conf2));
+ wpabuf_put_buf(clear, conf2);
+ } else if (conf2) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Second Config Object available, but peer does not support more than one");
+ }
+ if (env_data) {
+ wpabuf_put_le16(clear, DPP_ATTR_ENVELOPED_DATA);
+ wpabuf_put_le16(clear, wpabuf_len(env_data));
+ wpabuf_put_buf(clear, env_data);
+ }
+
+ if (auth->peer_version >= 2 && auth->send_conn_status &&
+ netrole == DPP_NETROLE_STA && status == DPP_STATUS_OK) {
+ wpa_printf(MSG_DEBUG, "DPP: sendConnStatus");
+ wpabuf_put_le16(clear, DPP_ATTR_SEND_CONN_STATUS);
+ wpabuf_put_le16(clear, 0);
+ }
+
+ if (status == DPP_STATUS_CSR_NEEDED && auth->conf_sta &&
+ auth->conf_sta->csrattrs) {
+ auth->waiting_csr = true;
+ wpa_printf(MSG_DEBUG, "DPP: CSR Attributes Request");
+ wpabuf_put_le16(clear, DPP_ATTR_CSR_ATTR_REQ);
+ wpabuf_put_le16(clear, os_strlen(auth->conf_sta->csrattrs));
+ wpabuf_put_str(clear, auth->conf_sta->csrattrs);
+ }
+
+#ifdef CONFIG_DPP3
+ if (status == DPP_STATUS_NEW_KEY_NEEDED && auth->conf &&
+ auth->conf->net_access_key_curve) {
+ u16 ike_group = auth->conf->net_access_key_curve->ike_group;
+
+ /* Finite Cyclic Group attribute */
+ wpa_printf(MSG_DEBUG, "DPP: Finite Cyclic Group: %u",
+ ike_group);
+ wpabuf_put_le16(clear, DPP_ATTR_FINITE_CYCLIC_GROUP);
+ wpabuf_put_le16(clear, 2);
+ wpabuf_put_le16(clear, ike_group);
+
+ if (pc) {
+ wpa_printf(MSG_DEBUG, "DPP: Pc");
+ wpabuf_put_le16(clear, DPP_ATTR_R_PROTOCOL_KEY);
+ wpabuf_put_le16(clear, wpabuf_len(pc));
+ wpabuf_put_buf(clear, pc);
+ }
+ }
+#endif /* CONFIG_DPP3 */
+
+#ifdef CONFIG_TESTING_OPTIONS
+skip_config_obj:
+ if (dpp_test == DPP_TEST_NO_STATUS_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - Status");
+ goto skip_status;
+ }
+ if (dpp_test == DPP_TEST_INVALID_STATUS_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - invalid Status");
+ status = 255;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ /* DPP Status */
+ dpp_build_attr_status(msg, status);
+
+#ifdef CONFIG_TESTING_OPTIONS
+skip_status:
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ addr[0] = wpabuf_head(msg);
+ len[0] = wpabuf_len(msg);
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD", addr[0], len[0]);
+
+ wpabuf_put_le16(msg, DPP_ATTR_WRAPPED_DATA);
+ wpabuf_put_le16(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+ wrapped = wpabuf_put(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: AES-SIV cleartext", clear);
+ if (aes_siv_encrypt(auth->ke, auth->curve->hash_len,
+ wpabuf_head(clear), wpabuf_len(clear),
+ 1, addr, len, wrapped) < 0)
+ goto fail;
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_AFTER_WRAPPED_DATA_CONF_RESP) {
+ wpa_printf(MSG_INFO, "DPP: TESTING - attr after Wrapped Data");
+ dpp_build_attr_status(msg, DPP_STATUS_OK);
+ }
+skip_wrapped_data:
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ wpa_hexdump_buf(MSG_DEBUG,
+ "DPP: Configuration Response attributes", msg);
+out:
+ wpabuf_clear_free(conf);
+ wpabuf_clear_free(conf2);
+ wpabuf_clear_free(env_data);
+ wpabuf_clear_free(clear);
+ wpabuf_free(pc);
+
+ return msg;
+fail:
+ wpabuf_free(msg);
+ msg = NULL;
+ goto out;
+}
+
+
+struct wpabuf *
+dpp_conf_req_rx(struct dpp_authentication *auth, const u8 *attr_start,
+ size_t attr_len)
+{
+ const u8 *wrapped_data, *e_nonce, *config_attr;
+ u16 wrapped_data_len, e_nonce_len, config_attr_len;
+ u8 *unwrapped = NULL;
+ size_t unwrapped_len = 0;
+ struct wpabuf *resp = NULL;
+ struct json_token *root = NULL, *token;
+ enum dpp_netrole netrole;
+ struct wpabuf *cert_req = NULL;
+#ifdef CONFIG_DPP3
+ const u8 *i_proto;
+ u16 i_proto_len;
+#endif /* CONFIG_DPP3 */
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_STOP_AT_CONF_REQ) {
+ wpa_printf(MSG_INFO,
+ "DPP: TESTING - stop at Config Request");
+ return NULL;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ if (dpp_check_attrs(attr_start, attr_len) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in config request");
+ return NULL;
+ }
+
+ wrapped_data = dpp_get_attr(attr_start, attr_len, DPP_ATTR_WRAPPED_DATA,
+ &wrapped_data_len);
+ if (!wrapped_data || wrapped_data_len < AES_BLOCK_SIZE) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required Wrapped Data attribute");
+ return NULL;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped_data, wrapped_data_len);
+ unwrapped_len = wrapped_data_len - AES_BLOCK_SIZE;
+ unwrapped = os_malloc(unwrapped_len);
+ if (!unwrapped)
+ return NULL;
+ if (aes_siv_decrypt(auth->ke, auth->curve->hash_len,
+ wrapped_data, wrapped_data_len,
+ 0, NULL, NULL, unwrapped) < 0) {
+ dpp_auth_fail(auth, "AES-SIV decryption failed");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV cleartext",
+ unwrapped, unwrapped_len);
+
+ if (dpp_check_attrs(unwrapped, unwrapped_len) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in unwrapped data");
+ goto fail;
+ }
+
+ e_nonce = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_ENROLLEE_NONCE,
+ &e_nonce_len);
+ if (!e_nonce || e_nonce_len != auth->curve->nonce_len) {
+ dpp_auth_fail(auth,
+ "Missing or invalid Enrollee Nonce attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Enrollee Nonce", e_nonce, e_nonce_len);
+ os_memcpy(auth->e_nonce, e_nonce, e_nonce_len);
+
+#ifdef CONFIG_DPP3
+ i_proto = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_I_PROTOCOL_KEY, &i_proto_len);
+ if (i_proto && !auth->waiting_new_key) {
+ dpp_auth_fail(auth,
+ "Enrollee included a new protocol key even though one was not expected");
+ goto fail;
+ }
+ if (i_proto) {
+ struct crypto_ec_key *pe;
+ u8 auth_i[DPP_MAX_HASH_LEN];
+ const u8 *rx_auth_i;
+ u16 rx_auth_i_len;
+
+ wpa_hexdump(MSG_MSGDUMP, "DPP: Initiator Protocol Key (new Pe)",
+ i_proto, i_proto_len);
+
+ pe = dpp_set_pubkey_point(auth->own_protocol_key,
+ i_proto, i_proto_len);
+ if (!pe) {
+ dpp_auth_fail(auth,
+ "Invalid Initiator Protocol Key (Pe)");
+ goto fail;
+ }
+ dpp_debug_print_key("New Peer Protocol Key (Pe)", pe);
+ crypto_ec_key_deinit(auth->peer_protocol_key);
+ auth->peer_protocol_key = pe;
+ auth->new_key_received = true;
+ auth->waiting_new_key = false;
+
+ if (dpp_derive_auth_i(auth, auth_i) < 0)
+ goto fail;
+
+ rx_auth_i = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_I_AUTH_TAG, &rx_auth_i_len);
+ if (!rx_auth_i) {
+ dpp_auth_fail(auth,
+ "Missing Initiator Authentication Tag");
+ goto fail;
+ }
+ if (rx_auth_i_len != auth->curve->hash_len ||
+ os_memcmp(rx_auth_i, auth_i, auth->curve->hash_len) != 0) {
+ dpp_auth_fail(auth,
+ "Mismatch in Initiator Authenticating Tag");
+ wpa_hexdump(MSG_DEBUG, "DPP: Received Auth-I",
+ rx_auth_i, rx_auth_i_len);
+ wpa_hexdump(MSG_DEBUG, "DPP: Derived Auth-I'",
+ auth_i, auth->curve->hash_len);
+ goto fail;
+ }
+ }
+#endif /* CONFIG_DPP3 */
+
+ config_attr = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_CONFIG_ATTR_OBJ,
+ &config_attr_len);
+ if (!config_attr) {
+ dpp_auth_fail(auth,
+ "Missing or invalid Config Attributes attribute");
+ goto fail;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: Config Attributes",
+ config_attr, config_attr_len);
+
+ root = json_parse((const char *) config_attr, config_attr_len);
+ if (!root) {
+ dpp_auth_fail(auth, "Could not parse Config Attributes");
+ goto fail;
+ }
+
+ token = json_get_member(root, "name");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth, "No Config Attributes - name");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "DPP: Enrollee name = '%s'", token->string);
+ os_free(auth->e_name);
+ auth->e_name = os_strdup(token->string);
+
+ token = json_get_member(root, "wi-fi_tech");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth, "No Config Attributes - wi-fi_tech");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "DPP: wi-fi_tech = '%s'", token->string);
+ if (os_strcmp(token->string, "infra") != 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported wi-fi_tech '%s'",
+ token->string);
+ dpp_auth_fail(auth, "Unsupported wi-fi_tech");
+ goto fail;
+ }
+
+ token = json_get_member(root, "netRole");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth, "No Config Attributes - netRole");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "DPP: netRole = '%s'", token->string);
+ if (os_strcmp(token->string, "sta") == 0) {
+ netrole = DPP_NETROLE_STA;
+ } else if (os_strcmp(token->string, "ap") == 0) {
+ netrole = DPP_NETROLE_AP;
+ } else if (os_strcmp(token->string, "configurator") == 0) {
+ netrole = DPP_NETROLE_CONFIGURATOR;
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported netRole '%s'",
+ token->string);
+ dpp_auth_fail(auth, "Unsupported netRole");
+ goto fail;
+ }
+ auth->e_netrole = netrole;
+
+ token = json_get_member(root, "mudurl");
+ if (token && token->type == JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: mudurl = '%s'", token->string);
+ wpa_msg(auth->msg_ctx, MSG_INFO, DPP_EVENT_MUD_URL "%s",
+ token->string);
+ os_free(auth->e_mud_url);
+ auth->e_mud_url = os_strdup(token->string);
+ }
+
+ token = json_get_member(root, "bandSupport");
+ if (token && token->type == JSON_ARRAY) {
+ int *opclass = NULL;
+ char txt[200], *pos, *end;
+ int i, res;
+
+ wpa_printf(MSG_DEBUG, "DPP: bandSupport");
+ token = token->child;
+ while (token) {
+ if (token->type != JSON_NUMBER) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Invalid bandSupport array member type");
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Supported global operating class: %d",
+ token->number);
+ int_array_add_unique(&opclass, token->number);
+ }
+ token = token->sibling;
+ }
+
+ txt[0] = '\0';
+ pos = txt;
+ end = txt + sizeof(txt);
+ for (i = 0; opclass && opclass[i]; i++) {
+ res = os_snprintf(pos, end - pos, "%s%d",
+ pos == txt ? "" : ",", opclass[i]);
+ if (os_snprintf_error(end - pos, res)) {
+ *pos = '\0';
+ break;
+ }
+ pos += res;
+ }
+ os_free(auth->e_band_support);
+ auth->e_band_support = opclass;
+ wpa_msg(auth->msg_ctx, MSG_INFO, DPP_EVENT_BAND_SUPPORT "%s",
+ txt);
+ }
+
+#ifdef CONFIG_DPP2
+ cert_req = json_get_member_base64(root, "pkcs10");
+ if (cert_req) {
+ char *txt;
+ int id;
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: CertificateRequest", cert_req);
+ if (dpp_validate_csr(auth, cert_req) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: CSR is not valid");
+ auth->force_conf_resp_status = DPP_STATUS_CSR_BAD;
+ goto cont;
+ }
+
+ id = dpp_get_peer_bi_id(auth);
+ if (id < 0)
+ goto fail;
+
+ wpa_printf(MSG_DEBUG, "DPP: CSR is valid - forward to CA/RA");
+ txt = base64_encode_no_lf(wpabuf_head(cert_req),
+ wpabuf_len(cert_req), NULL);
+ if (!txt)
+ goto fail;
+
+ wpa_msg(auth->msg_ctx, MSG_INFO, DPP_EVENT_CSR "peer=%d csr=%s",
+ id, txt);
+ os_free(txt);
+ auth->waiting_csr = false;
+ auth->waiting_cert = true;
+ goto fail;
+ }
+cont:
+#endif /* CONFIG_DPP2 */
+
+ resp = dpp_build_conf_resp(auth, e_nonce, e_nonce_len, netrole,
+ cert_req);
+
+fail:
+ wpabuf_free(cert_req);
+ json_free(root);
+ os_free(unwrapped);
+ return resp;
+}
+
+
+static int dpp_parse_cred_legacy(struct dpp_config_obj *conf,
+ struct json_token *cred)
+{
+ struct json_token *pass, *psk_hex;
+
+ wpa_printf(MSG_DEBUG, "DPP: Legacy akm=psk credential");
+
+ pass = json_get_member(cred, "pass");
+ psk_hex = json_get_member(cred, "psk_hex");
+
+ if (pass && pass->type == JSON_STRING) {
+ size_t len = os_strlen(pass->string);
+
+ wpa_hexdump_ascii_key(MSG_DEBUG, "DPP: Legacy passphrase",
+ pass->string, len);
+ if (len < 8 || len > 63)
+ return -1;
+ os_strlcpy(conf->passphrase, pass->string,
+ sizeof(conf->passphrase));
+ } else if (psk_hex && psk_hex->type == JSON_STRING) {
+ if (dpp_akm_sae(conf->akm) && !dpp_akm_psk(conf->akm)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unexpected psk_hex with akm=sae");
+ return -1;
+ }
+ if (os_strlen(psk_hex->string) != PMK_LEN * 2 ||
+ hexstr2bin(psk_hex->string, conf->psk, PMK_LEN) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Invalid psk_hex encoding");
+ return -1;
+ }
+ wpa_hexdump_key(MSG_DEBUG, "DPP: Legacy PSK",
+ conf->psk, PMK_LEN);
+ conf->psk_set = 1;
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: No pass or psk_hex strings found");
+ return -1;
+ }
+
+ if (dpp_akm_sae(conf->akm) && !conf->passphrase[0]) {
+ wpa_printf(MSG_DEBUG, "DPP: No pass for sae found");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+struct crypto_ec_key * dpp_parse_jwk(struct json_token *jwk,
+ const struct dpp_curve_params **key_curve)
+{
+ struct json_token *token;
+ const struct dpp_curve_params *curve;
+ struct wpabuf *x = NULL, *y = NULL;
+ struct crypto_ec_key *key = NULL;
+
+ token = json_get_member(jwk, "kty");
+ if (!token || token->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: No kty in JWK");
+ goto fail;
+ }
+ if (os_strcmp(token->string, "EC") != 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Unexpected JWK kty '%s'",
+ token->string);
+ goto fail;
+ }
+
+ token = json_get_member(jwk, "crv");
+ if (!token || token->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: No crv in JWK");
+ goto fail;
+ }
+ curve = dpp_get_curve_jwk_crv(token->string);
+ if (!curve) {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported JWK crv '%s'",
+ token->string);
+ goto fail;
+ }
+
+ x = json_get_member_base64url(jwk, "x");
+ if (!x) {
+ wpa_printf(MSG_DEBUG, "DPP: No x in JWK");
+ goto fail;
+ }
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: JWK x", x);
+ if (wpabuf_len(x) != curve->prime_len) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unexpected JWK x length %u (expected %u for curve %s)",
+ (unsigned int) wpabuf_len(x),
+ (unsigned int) curve->prime_len, curve->name);
+ goto fail;
+ }
+
+ y = json_get_member_base64url(jwk, "y");
+ if (!y) {
+ wpa_printf(MSG_DEBUG, "DPP: No y in JWK");
+ goto fail;
+ }
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: JWK y", y);
+ if (wpabuf_len(y) != curve->prime_len) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unexpected JWK y length %u (expected %u for curve %s)",
+ (unsigned int) wpabuf_len(y),
+ (unsigned int) curve->prime_len, curve->name);
+ goto fail;
+ }
+
+ key = crypto_ec_key_set_pub(curve->ike_group, wpabuf_head(x),
+ wpabuf_head(y), wpabuf_len(x));
+ if (!key)
+ goto fail;
+
+ *key_curve = curve;
+
+fail:
+ wpabuf_free(x);
+ wpabuf_free(y);
+
+ return key;
+}
+
+
+int dpp_key_expired(const char *timestamp, os_time_t *expiry)
+{
+ struct os_time now;
+ unsigned int year, month, day, hour, min, sec;
+ os_time_t utime;
+ const char *pos;
+
+ /* ISO 8601 date and time:
+ * <date>T<time>
+ * YYYY-MM-DDTHH:MM:SSZ
+ * YYYY-MM-DDTHH:MM:SS+03:00
+ */
+ if (os_strlen(timestamp) < 19) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Too short timestamp - assume expired key");
+ return 1;
+ }
+ if (sscanf(timestamp, "%04u-%02u-%02uT%02u:%02u:%02u",
+ &year, &month, &day, &hour, &min, &sec) != 6) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Failed to parse expiration day - assume expired key");
+ return 1;
+ }
+
+ if (os_mktime(year, month, day, hour, min, sec, &utime) < 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Invalid date/time information - assume expired key");
+ return 1;
+ }
+
+ pos = timestamp + 19;
+ if (*pos == 'Z' || *pos == '\0') {
+ /* In UTC - no need to adjust */
+ } else if (*pos == '-' || *pos == '+') {
+ int items;
+
+ /* Adjust local time to UTC */
+ items = sscanf(pos + 1, "%02u:%02u", &hour, &min);
+ if (items < 1) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Invalid time zone designator (%s) - assume expired key",
+ pos);
+ return 1;
+ }
+ if (*pos == '-')
+ utime += 3600 * hour;
+ if (*pos == '+')
+ utime -= 3600 * hour;
+ if (items > 1) {
+ if (*pos == '-')
+ utime += 60 * min;
+ if (*pos == '+')
+ utime -= 60 * min;
+ }
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Invalid time zone designator (%s) - assume expired key",
+ pos);
+ return 1;
+ }
+ if (expiry)
+ *expiry = utime;
+
+ if (os_get_time(&now) < 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Cannot get current time - assume expired key");
+ return 1;
+ }
+
+ if (now.sec > utime) {
+ wpa_printf(MSG_DEBUG, "DPP: Key has expired (%lu < %lu)",
+ utime, now.sec);
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static int dpp_parse_connector(struct dpp_authentication *auth,
+ struct dpp_config_obj *conf,
+ const unsigned char *payload,
+ u16 payload_len)
+{
+ struct json_token *root, *groups, *netkey, *token;
+ int ret = -1;
+ struct crypto_ec_key *key = NULL;
+ const struct dpp_curve_params *curve;
+ unsigned int rules = 0;
+
+ root = json_parse((const char *) payload, payload_len);
+ if (!root) {
+ wpa_printf(MSG_DEBUG, "DPP: JSON parsing of connector failed");
+ goto fail;
+ }
+
+ groups = json_get_member(root, "groups");
+ if (!groups || groups->type != JSON_ARRAY) {
+ wpa_printf(MSG_DEBUG, "DPP: No groups array found");
+ goto skip_groups;
+ }
+ for (token = groups->child; token; token = token->sibling) {
+ struct json_token *id, *role;
+
+ id = json_get_member(token, "groupId");
+ if (!id || id->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: Missing groupId string");
+ goto fail;
+ }
+
+ role = json_get_member(token, "netRole");
+ if (!role || role->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: Missing netRole string");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG,
+ "DPP: connector group: groupId='%s' netRole='%s'",
+ id->string, role->string);
+ rules++;
+ }
+skip_groups:
+
+ if (!rules) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Connector includes no groups");
+ goto fail;
+ }
+
+ token = json_get_member(root, "expiry");
+ if (!token || token->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No expiry string found - connector does not expire");
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: expiry = %s", token->string);
+ if (dpp_key_expired(token->string,
+ &auth->net_access_key_expiry)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Connector (netAccessKey) has expired");
+ goto fail;
+ }
+ }
+
+ netkey = json_get_member(root, "netAccessKey");
+ if (!netkey || netkey->type != JSON_OBJECT) {
+ wpa_printf(MSG_DEBUG, "DPP: No netAccessKey object found");
+ goto fail;
+ }
+
+ key = dpp_parse_jwk(netkey, &curve);
+ if (!key)
+ goto fail;
+ dpp_debug_print_key("DPP: Received netAccessKey", key);
+
+ if (crypto_ec_key_cmp(key, auth->own_protocol_key)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: netAccessKey in connector does not match own protocol key");
+#ifdef CONFIG_TESTING_OPTIONS
+ if (auth->ignore_netaccesskey_mismatch) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: TESTING - skip netAccessKey mismatch");
+ } else {
+ goto fail;
+ }
+#else /* CONFIG_TESTING_OPTIONS */
+ goto fail;
+#endif /* CONFIG_TESTING_OPTIONS */
+ }
+
+ ret = 0;
+fail:
+ crypto_ec_key_deinit(key);
+ json_free(root);
+ return ret;
+}
+
+
+static void dpp_copy_csign(struct dpp_config_obj *conf,
+ struct crypto_ec_key *csign)
+{
+ struct wpabuf *c_sign_key;
+
+ c_sign_key = crypto_ec_key_get_subject_public_key(csign);
+ if (!c_sign_key)
+ return;
+
+ wpabuf_free(conf->c_sign_key);
+ conf->c_sign_key = c_sign_key;
+}
+
+
+static void dpp_copy_ppkey(struct dpp_config_obj *conf,
+ struct crypto_ec_key *ppkey)
+{
+ struct wpabuf *pp_key;
+
+ pp_key = crypto_ec_key_get_subject_public_key(ppkey);
+ if (!pp_key)
+ return;
+
+ wpabuf_free(conf->pp_key);
+ conf->pp_key = pp_key;
+}
+
+
+static void dpp_copy_netaccesskey(struct dpp_authentication *auth,
+ struct dpp_config_obj *conf)
+{
+ struct wpabuf *net_access_key;
+ struct crypto_ec_key *own_key;
+
+ own_key = auth->own_protocol_key;
+#ifdef CONFIG_DPP2
+ if (auth->reconfig_connector_key == DPP_CONFIG_REUSEKEY &&
+ auth->reconfig_old_protocol_key)
+ own_key = auth->reconfig_old_protocol_key;
+#endif /* CONFIG_DPP2 */
+
+ net_access_key = crypto_ec_key_get_ecprivate_key(own_key, true);
+ if (!net_access_key)
+ return;
+
+ wpabuf_free(auth->net_access_key);
+ auth->net_access_key = net_access_key;
+}
+
+
+static int dpp_parse_cred_dpp(struct dpp_authentication *auth,
+ struct dpp_config_obj *conf,
+ struct json_token *cred)
+{
+ struct dpp_signed_connector_info info;
+ struct json_token *token, *csign, *ppkey;
+ int ret = -1;
+ struct crypto_ec_key *csign_pub = NULL, *pp_pub = NULL;
+ const struct dpp_curve_params *key_curve = NULL, *pp_curve = NULL;
+ const char *signed_connector;
+
+ os_memset(&info, 0, sizeof(info));
+
+ if (dpp_akm_psk(conf->akm) || dpp_akm_sae(conf->akm)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Legacy credential included in Connector credential");
+ if (dpp_parse_cred_legacy(conf, cred) < 0)
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "DPP: Connector credential");
+
+ csign = json_get_member(cred, "csign");
+ if (!csign || csign->type != JSON_OBJECT) {
+ wpa_printf(MSG_DEBUG, "DPP: No csign JWK in JSON");
+ goto fail;
+ }
+
+ csign_pub = dpp_parse_jwk(csign, &key_curve);
+ if (!csign_pub) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to parse csign JWK");
+ goto fail;
+ }
+ dpp_debug_print_key("DPP: Received C-sign-key", csign_pub);
+
+ ppkey = json_get_member(cred, "ppKey");
+ if (ppkey && ppkey->type == JSON_OBJECT) {
+ pp_pub = dpp_parse_jwk(ppkey, &pp_curve);
+ if (!pp_pub) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to parse ppKey JWK");
+ goto fail;
+ }
+ dpp_debug_print_key("DPP: Received ppKey", pp_pub);
+ if (key_curve != pp_curve) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: C-sign-key and ppKey do not use the same curve");
+ goto fail;
+ }
+ }
+
+ token = json_get_member(cred, "signedConnector");
+ if (!token || token->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG, "DPP: No signedConnector string found");
+ goto fail;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: signedConnector",
+ token->string, os_strlen(token->string));
+ signed_connector = token->string;
+
+ if (os_strchr(signed_connector, '"') ||
+ os_strchr(signed_connector, '\n')) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unexpected character in signedConnector");
+ goto fail;
+ }
+
+ if (dpp_process_signed_connector(&info, csign_pub,
+ signed_connector) != DPP_STATUS_OK)
+ goto fail;
+
+ if (dpp_parse_connector(auth, conf,
+ info.payload, info.payload_len) < 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Failed to parse connector");
+ goto fail;
+ }
+
+ os_free(conf->connector);
+ conf->connector = os_strdup(signed_connector);
+
+ dpp_copy_csign(conf, csign_pub);
+ if (pp_pub)
+ dpp_copy_ppkey(conf, pp_pub);
+ if (dpp_akm_dpp(conf->akm) || auth->peer_version >= 2)
+ dpp_copy_netaccesskey(auth, conf);
+
+ ret = 0;
+fail:
+ crypto_ec_key_deinit(csign_pub);
+ crypto_ec_key_deinit(pp_pub);
+ os_free(info.payload);
+ return ret;
+}
+
+
+#ifdef CONFIG_DPP2
+static int dpp_parse_cred_dot1x(struct dpp_authentication *auth,
+ struct dpp_config_obj *conf,
+ struct json_token *cred)
+{
+ struct json_token *ent, *name;
+
+ ent = json_get_member(cred, "entCreds");
+ if (!ent || ent->type != JSON_OBJECT) {
+ dpp_auth_fail(auth, "No entCreds in JSON");
+ return -1;
+ }
+
+ conf->certbag = json_get_member_base64(ent, "certBag");
+ if (!conf->certbag) {
+ dpp_auth_fail(auth, "No certBag in JSON");
+ return -1;
+ }
+ wpa_hexdump_buf(MSG_MSGDUMP, "DPP: Received certBag", conf->certbag);
+ conf->certs = crypto_pkcs7_get_certificates(conf->certbag);
+ if (!conf->certs) {
+ dpp_auth_fail(auth, "No certificates in certBag");
+ return -1;
+ }
+
+ conf->cacert = json_get_member_base64(ent, "caCert");
+ if (conf->cacert)
+ wpa_hexdump_buf(MSG_MSGDUMP, "DPP: Received caCert",
+ conf->cacert);
+
+ name = json_get_member(ent, "trustedEapServerName");
+ if (name &&
+ (name->type != JSON_STRING ||
+ has_ctrl_char((const u8 *) name->string,
+ os_strlen(name->string)))) {
+ dpp_auth_fail(auth,
+ "Invalid trustedEapServerName type in JSON");
+ return -1;
+ }
+ if (name && name->string) {
+ wpa_printf(MSG_DEBUG, "DPP: Received trustedEapServerName: %s",
+ name->string);
+ conf->server_name = os_strdup(name->string);
+ if (!conf->server_name)
+ return -1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_DPP2 */
+
+
+const char * dpp_akm_str(enum dpp_akm akm)
+{
+ switch (akm) {
+ case DPP_AKM_DPP:
+ return "dpp";
+ case DPP_AKM_PSK:
+ return "psk";
+ case DPP_AKM_SAE:
+ return "sae";
+ case DPP_AKM_PSK_SAE:
+ return "psk+sae";
+ case DPP_AKM_SAE_DPP:
+ return "dpp+sae";
+ case DPP_AKM_PSK_SAE_DPP:
+ return "dpp+psk+sae";
+ case DPP_AKM_DOT1X:
+ return "dot1x";
+ default:
+ return "??";
+ }
+}
+
+
+const char * dpp_akm_selector_str(enum dpp_akm akm)
+{
+ switch (akm) {
+ case DPP_AKM_DPP:
+ return "506F9A02";
+ case DPP_AKM_PSK:
+ return "000FAC02+000FAC06";
+ case DPP_AKM_SAE:
+ return "000FAC08";
+ case DPP_AKM_PSK_SAE:
+ return "000FAC02+000FAC06+000FAC08";
+ case DPP_AKM_SAE_DPP:
+ return "506F9A02+000FAC08";
+ case DPP_AKM_PSK_SAE_DPP:
+ return "506F9A02+000FAC08+000FAC02+000FAC06";
+ case DPP_AKM_DOT1X:
+ return "000FAC01+000FAC05";
+ default:
+ return "??";
+ }
+}
+
+
+static enum dpp_akm dpp_akm_from_str(const char *akm)
+{
+ const char *pos;
+ int dpp = 0, psk = 0, sae = 0, dot1x = 0;
+
+ if (os_strcmp(akm, "psk") == 0)
+ return DPP_AKM_PSK;
+ if (os_strcmp(akm, "sae") == 0)
+ return DPP_AKM_SAE;
+ if (os_strcmp(akm, "psk+sae") == 0)
+ return DPP_AKM_PSK_SAE;
+ if (os_strcmp(akm, "dpp") == 0)
+ return DPP_AKM_DPP;
+ if (os_strcmp(akm, "dpp+sae") == 0)
+ return DPP_AKM_SAE_DPP;
+ if (os_strcmp(akm, "dpp+psk+sae") == 0)
+ return DPP_AKM_PSK_SAE_DPP;
+ if (os_strcmp(akm, "dot1x") == 0)
+ return DPP_AKM_DOT1X;
+
+ pos = akm;
+ while (*pos) {
+ if (os_strlen(pos) < 8)
+ break;
+ if (os_strncasecmp(pos, "506F9A02", 8) == 0)
+ dpp = 1;
+ else if (os_strncasecmp(pos, "000FAC02", 8) == 0)
+ psk = 1;
+ else if (os_strncasecmp(pos, "000FAC06", 8) == 0)
+ psk = 1;
+ else if (os_strncasecmp(pos, "000FAC08", 8) == 0)
+ sae = 1;
+ else if (os_strncasecmp(pos, "000FAC01", 8) == 0)
+ dot1x = 1;
+ else if (os_strncasecmp(pos, "000FAC05", 8) == 0)
+ dot1x = 1;
+ pos += 8;
+ if (*pos != '+')
+ break;
+ pos++;
+ }
+
+ if (dpp && psk && sae)
+ return DPP_AKM_PSK_SAE_DPP;
+ if (dpp && sae)
+ return DPP_AKM_SAE_DPP;
+ if (dpp)
+ return DPP_AKM_DPP;
+ if (psk && sae)
+ return DPP_AKM_PSK_SAE;
+ if (sae)
+ return DPP_AKM_SAE;
+ if (psk)
+ return DPP_AKM_PSK;
+ if (dot1x)
+ return DPP_AKM_DOT1X;
+
+ return DPP_AKM_UNKNOWN;
+}
+
+
+static int dpp_parse_conf_obj(struct dpp_authentication *auth,
+ const u8 *conf_obj, u16 conf_obj_len)
+{
+ int ret = -1;
+ struct json_token *root, *token, *discovery, *cred;
+ struct dpp_config_obj *conf;
+ struct wpabuf *ssid64 = NULL;
+ int legacy;
+
+ root = json_parse((const char *) conf_obj, conf_obj_len);
+ if (!root)
+ return -1;
+ if (root->type != JSON_OBJECT) {
+ dpp_auth_fail(auth, "JSON root is not an object");
+ goto fail;
+ }
+
+ token = json_get_member(root, "wi-fi_tech");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth, "No wi-fi_tech string value found");
+ goto fail;
+ }
+ if (os_strcmp(token->string, "infra") != 0) {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported wi-fi_tech value: '%s'",
+ token->string);
+ dpp_auth_fail(auth, "Unsupported wi-fi_tech value");
+ goto fail;
+ }
+
+ discovery = json_get_member(root, "discovery");
+ if (!discovery || discovery->type != JSON_OBJECT) {
+ dpp_auth_fail(auth, "No discovery object in JSON");
+ goto fail;
+ }
+
+ ssid64 = json_get_member_base64url(discovery, "ssid64");
+ if (ssid64) {
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: discovery::ssid64",
+ wpabuf_head(ssid64), wpabuf_len(ssid64));
+ if (wpabuf_len(ssid64) > SSID_MAX_LEN) {
+ dpp_auth_fail(auth, "Too long discovery::ssid64 value");
+ goto fail;
+ }
+ } else {
+ token = json_get_member(discovery, "ssid");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth,
+ "No discovery::ssid string value found");
+ goto fail;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: discovery::ssid",
+ token->string, os_strlen(token->string));
+ if (os_strlen(token->string) > SSID_MAX_LEN) {
+ dpp_auth_fail(auth,
+ "Too long discovery::ssid string value");
+ goto fail;
+ }
+ }
+
+ if (auth->num_conf_obj == DPP_MAX_CONF_OBJ) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No room for this many Config Objects - ignore this one");
+ ret = 0;
+ goto fail;
+ }
+ conf = &auth->conf_obj[auth->num_conf_obj++];
+
+ if (ssid64) {
+ conf->ssid_len = wpabuf_len(ssid64);
+ os_memcpy(conf->ssid, wpabuf_head(ssid64), conf->ssid_len);
+ } else {
+ conf->ssid_len = os_strlen(token->string);
+ os_memcpy(conf->ssid, token->string, conf->ssid_len);
+ }
+
+ token = json_get_member(discovery, "ssid_charset");
+ if (token && token->type == JSON_NUMBER) {
+ conf->ssid_charset = token->number;
+ wpa_printf(MSG_DEBUG, "DPP: ssid_charset=%d",
+ conf->ssid_charset);
+ }
+
+ cred = json_get_member(root, "cred");
+ if (!cred || cred->type != JSON_OBJECT) {
+ dpp_auth_fail(auth, "No cred object in JSON");
+ goto fail;
+ }
+
+ token = json_get_member(cred, "akm");
+ if (!token || token->type != JSON_STRING) {
+ dpp_auth_fail(auth, "No cred::akm string value found");
+ goto fail;
+ }
+ conf->akm = dpp_akm_from_str(token->string);
+
+ legacy = dpp_akm_legacy(conf->akm);
+ if (legacy && auth->peer_version >= 2) {
+ struct json_token *csign, *s_conn;
+
+ csign = json_get_member(cred, "csign");
+ s_conn = json_get_member(cred, "signedConnector");
+ if (csign && csign->type == JSON_OBJECT &&
+ s_conn && s_conn->type == JSON_STRING)
+ legacy = 0;
+ }
+ if (legacy) {
+ if (dpp_parse_cred_legacy(conf, cred) < 0)
+ goto fail;
+ } else if (dpp_akm_dpp(conf->akm) ||
+ (auth->peer_version >= 2 && dpp_akm_legacy(conf->akm))) {
+ if (dpp_parse_cred_dpp(auth, conf, cred) < 0)
+ goto fail;
+#ifdef CONFIG_DPP2
+ } else if (conf->akm == DPP_AKM_DOT1X) {
+ if (dpp_parse_cred_dot1x(auth, conf, cred) < 0 ||
+ dpp_parse_cred_dpp(auth, conf, cred) < 0)
+ goto fail;
+#endif /* CONFIG_DPP2 */
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported akm: %s",
+ token->string);
+ dpp_auth_fail(auth, "Unsupported akm");
+ goto fail;
+ }
+
+ wpa_printf(MSG_DEBUG, "DPP: JSON parsing completed successfully");
+ ret = 0;
+fail:
+ wpabuf_free(ssid64);
+ json_free(root);
+ return ret;
+}
+
+
+#ifdef CONFIG_DPP2
+static u8 * dpp_get_csr_attrs(const u8 *attrs, size_t attrs_len, size_t *len)
+{
+ const u8 *b64;
+ u16 b64_len;
+
+ b64 = dpp_get_attr(attrs, attrs_len, DPP_ATTR_CSR_ATTR_REQ, &b64_len);
+ if (!b64)
+ return NULL;
+ return base64_decode((const char *) b64, b64_len, len);
+}
+#endif /* CONFIG_DPP2 */
+
+
+int dpp_conf_resp_rx(struct dpp_authentication *auth,
+ const struct wpabuf *resp)
+{
+ const u8 *wrapped_data, *e_nonce, *status, *conf_obj;
+ u16 wrapped_data_len, e_nonce_len, status_len, conf_obj_len;
+ const u8 *env_data;
+ u16 env_data_len;
+ const u8 *addr[1];
+ size_t len[1];
+ u8 *unwrapped = NULL;
+ size_t unwrapped_len = 0;
+ int ret = -1;
+
+ auth->conf_resp_status = 255;
+
+ if (dpp_check_attrs(wpabuf_head(resp), wpabuf_len(resp)) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in config response");
+ return -1;
+ }
+
+ wrapped_data = dpp_get_attr(wpabuf_head(resp), wpabuf_len(resp),
+ DPP_ATTR_WRAPPED_DATA,
+ &wrapped_data_len);
+ if (!wrapped_data || wrapped_data_len < AES_BLOCK_SIZE) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required Wrapped Data attribute");
+ return -1;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped_data, wrapped_data_len);
+ unwrapped_len = wrapped_data_len - AES_BLOCK_SIZE;
+ unwrapped = os_malloc(unwrapped_len);
+ if (!unwrapped)
+ return -1;
+
+ addr[0] = wpabuf_head(resp);
+ len[0] = wrapped_data - 4 - (const u8 *) wpabuf_head(resp);
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD", addr[0], len[0]);
+
+ if (aes_siv_decrypt(auth->ke, auth->curve->hash_len,
+ wrapped_data, wrapped_data_len,
+ 1, addr, len, unwrapped) < 0) {
+ dpp_auth_fail(auth, "AES-SIV decryption failed");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV cleartext",
+ unwrapped, unwrapped_len);
+
+ if (dpp_check_attrs(unwrapped, unwrapped_len) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in unwrapped data");
+ goto fail;
+ }
+
+ e_nonce = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_ENROLLEE_NONCE,
+ &e_nonce_len);
+ if (!e_nonce || e_nonce_len != auth->curve->nonce_len) {
+ dpp_auth_fail(auth,
+ "Missing or invalid Enrollee Nonce attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Enrollee Nonce", e_nonce, e_nonce_len);
+ if (os_memcmp(e_nonce, auth->e_nonce, e_nonce_len) != 0) {
+ dpp_auth_fail(auth, "Enrollee Nonce mismatch");
+ goto fail;
+ }
+
+ status = dpp_get_attr(wpabuf_head(resp), wpabuf_len(resp),
+ DPP_ATTR_STATUS, &status_len);
+ if (!status || status_len < 1) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required DPP Status attribute");
+ goto fail;
+ }
+ auth->conf_resp_status = status[0];
+ wpa_printf(MSG_DEBUG, "DPP: Status %u", status[0]);
+#ifdef CONFIG_DPP2
+ if (status[0] == DPP_STATUS_CSR_NEEDED) {
+ u8 *csrattrs;
+ size_t csrattrs_len;
+
+ wpa_printf(MSG_DEBUG, "DPP: Configurator requested CSR");
+
+ csrattrs = dpp_get_csr_attrs(unwrapped, unwrapped_len,
+ &csrattrs_len);
+ if (!csrattrs) {
+ dpp_auth_fail(auth,
+ "Missing or invalid CSR Attributes Request attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: CsrAttrs", csrattrs, csrattrs_len);
+ os_free(auth->csrattrs);
+ auth->csrattrs = csrattrs;
+ auth->csrattrs_len = csrattrs_len;
+ ret = -2;
+ goto fail;
+ }
+#endif /* CONFIG_DPP2 */
+#ifdef CONFIG_DPP3
+ if (status[0] == DPP_STATUS_NEW_KEY_NEEDED) {
+ const u8 *fcgroup, *r_proto;
+ u16 fcgroup_len, r_proto_len;
+ u16 group;
+ const struct dpp_curve_params *curve;
+ struct crypto_ec_key *new_pe;
+ struct crypto_ec_key *pc;
+
+ fcgroup = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_FINITE_CYCLIC_GROUP,
+ &fcgroup_len);
+ if (!fcgroup || fcgroup_len != 2) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required Finite Cyclic Group attribute");
+ goto fail;
+ }
+ group = WPA_GET_LE16(fcgroup);
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Configurator requested a new protocol key from group %u",
+ group);
+ curve = dpp_get_curve_ike_group(group);
+ if (!curve) {
+ dpp_auth_fail(auth,
+ "Unsupported group for new protocol key");
+ goto fail;
+ }
+
+ new_pe = dpp_gen_keypair(curve);
+ if (!new_pe) {
+ dpp_auth_fail(auth,
+ "Failed to generate a new protocol key");
+ goto fail;
+ }
+
+ crypto_ec_key_deinit(auth->own_protocol_key);
+ auth->own_protocol_key = new_pe;
+ auth->new_curve = curve;
+
+ r_proto = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_R_PROTOCOL_KEY,
+ &r_proto_len);
+ if (!r_proto) {
+ dpp_auth_fail(auth,
+ "Missing required Responder Protocol Key attribute (Pc)");
+ goto fail;
+ }
+ wpa_hexdump(MSG_MSGDUMP, "DPP: Responder Protocol Key (new Pc)",
+ r_proto, r_proto_len);
+
+ pc = dpp_set_pubkey_point(new_pe, r_proto, r_proto_len);
+ if (!pc) {
+ dpp_auth_fail(auth, "Invalid Responder Protocol Key (Pc)");
+ goto fail;
+ }
+ dpp_debug_print_key("New Peer Protocol Key (Pc)", pc);
+
+ crypto_ec_key_deinit(auth->peer_protocol_key);
+ auth->peer_protocol_key = pc;
+
+ auth->waiting_new_key = true;
+ ret = -3;
+ goto fail;
+ }
+#endif /* CONFIG_DPP3 */
+ if (status[0] != DPP_STATUS_OK) {
+ dpp_auth_fail(auth, "Configurator rejected configuration");
+ goto fail;
+ }
+
+ env_data = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_ENVELOPED_DATA, &env_data_len);
+#ifdef CONFIG_DPP2
+ if (env_data &&
+ dpp_conf_resp_env_data(auth, env_data, env_data_len) < 0)
+ goto fail;
+#endif /* CONFIG_DPP2 */
+
+ conf_obj = dpp_get_attr(unwrapped, unwrapped_len, DPP_ATTR_CONFIG_OBJ,
+ &conf_obj_len);
+ if (!conf_obj && !env_data) {
+ dpp_auth_fail(auth,
+ "Missing required Configuration Object attribute");
+ goto fail;
+ }
+ while (conf_obj) {
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: configurationObject JSON",
+ conf_obj, conf_obj_len);
+ if (dpp_parse_conf_obj(auth, conf_obj, conf_obj_len) < 0)
+ goto fail;
+ conf_obj = dpp_get_attr_next(conf_obj, unwrapped, unwrapped_len,
+ DPP_ATTR_CONFIG_OBJ,
+ &conf_obj_len);
+ }
+
+#ifdef CONFIG_DPP2
+ status = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_SEND_CONN_STATUS, &status_len);
+ if (status) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Configurator requested connection status result");
+ auth->conn_status_requested = 1;
+ }
+#endif /* CONFIG_DPP2 */
+
+ ret = 0;
+
+fail:
+ os_free(unwrapped);
+ return ret;
+}
+
+
+#ifdef CONFIG_DPP2
+
+enum dpp_status_error dpp_conf_result_rx(struct dpp_authentication *auth,
+ const u8 *hdr,
+ const u8 *attr_start, size_t attr_len)
+{
+ const u8 *wrapped_data, *status, *e_nonce;
+ u16 wrapped_data_len, status_len, e_nonce_len;
+ const u8 *addr[2];
+ size_t len[2];
+ u8 *unwrapped = NULL;
+ size_t unwrapped_len = 0;
+ enum dpp_status_error ret = 256;
+
+ wrapped_data = dpp_get_attr(attr_start, attr_len, DPP_ATTR_WRAPPED_DATA,
+ &wrapped_data_len);
+ if (!wrapped_data || wrapped_data_len < AES_BLOCK_SIZE) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required Wrapped Data attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Wrapped data",
+ wrapped_data, wrapped_data_len);
+
+ attr_len = wrapped_data - 4 - attr_start;
+
+ addr[0] = hdr;
+ len[0] = DPP_HDR_LEN;
+ addr[1] = attr_start;
+ len[1] = attr_len;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[0]", addr[0], len[0]);
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[1]", addr[1], len[1]);
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped_data, wrapped_data_len);
+ unwrapped_len = wrapped_data_len - AES_BLOCK_SIZE;
+ unwrapped = os_malloc(unwrapped_len);
+ if (!unwrapped)
+ goto fail;
+ if (aes_siv_decrypt(auth->ke, auth->curve->hash_len,
+ wrapped_data, wrapped_data_len,
+ 2, addr, len, unwrapped) < 0) {
+ dpp_auth_fail(auth, "AES-SIV decryption failed");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV cleartext",
+ unwrapped, unwrapped_len);
+
+ if (dpp_check_attrs(unwrapped, unwrapped_len) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in unwrapped data");
+ goto fail;
+ }
+
+ e_nonce = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_ENROLLEE_NONCE,
+ &e_nonce_len);
+ if (!e_nonce || e_nonce_len != auth->curve->nonce_len) {
+ dpp_auth_fail(auth,
+ "Missing or invalid Enrollee Nonce attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Enrollee Nonce", e_nonce, e_nonce_len);
+ if (os_memcmp(e_nonce, auth->e_nonce, e_nonce_len) != 0) {
+ dpp_auth_fail(auth, "Enrollee Nonce mismatch");
+ wpa_hexdump(MSG_DEBUG, "DPP: Expected Enrollee Nonce",
+ auth->e_nonce, e_nonce_len);
+ goto fail;
+ }
+
+ status = dpp_get_attr(unwrapped, unwrapped_len, DPP_ATTR_STATUS,
+ &status_len);
+ if (!status || status_len < 1) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required DPP Status attribute");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "DPP: Status %u", status[0]);
+ ret = status[0];
+
+fail:
+ bin_clear_free(unwrapped, unwrapped_len);
+ return ret;
+}
+
+
+struct wpabuf * dpp_build_conf_result(struct dpp_authentication *auth,
+ enum dpp_status_error status)
+{
+ struct wpabuf *msg, *clear;
+ size_t nonce_len, clear_len, attr_len;
+ const u8 *addr[2];
+ size_t len[2];
+ u8 *wrapped;
+
+ nonce_len = auth->curve->nonce_len;
+ clear_len = 5 + 4 + nonce_len;
+ attr_len = 4 + clear_len + AES_BLOCK_SIZE;
+ clear = wpabuf_alloc(clear_len);
+ msg = dpp_alloc_msg(DPP_PA_CONFIGURATION_RESULT, attr_len);
+ if (!clear || !msg)
+ goto fail;
+
+ /* DPP Status */
+ dpp_build_attr_status(clear, status);
+
+ /* E-nonce */
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, nonce_len);
+ wpabuf_put_data(clear, auth->e_nonce, nonce_len);
+
+ /* OUI, OUI type, Crypto Suite, DPP frame type */
+ addr[0] = wpabuf_head_u8(msg) + 2;
+ len[0] = 3 + 1 + 1 + 1;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[0]", addr[0], len[0]);
+
+ /* Attributes before Wrapped Data (none) */
+ addr[1] = wpabuf_put(msg, 0);
+ len[1] = 0;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[1]", addr[1], len[1]);
+
+ /* Wrapped Data */
+ wpabuf_put_le16(msg, DPP_ATTR_WRAPPED_DATA);
+ wpabuf_put_le16(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+ wrapped = wpabuf_put(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: AES-SIV cleartext", clear);
+ if (aes_siv_encrypt(auth->ke, auth->curve->hash_len,
+ wpabuf_head(clear), wpabuf_len(clear),
+ 2, addr, len, wrapped) < 0)
+ goto fail;
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Result attributes", msg);
+ wpabuf_free(clear);
+ return msg;
+fail:
+ wpabuf_free(clear);
+ wpabuf_free(msg);
+ return NULL;
+}
+
+
+static int valid_channel_list(const char *val)
+{
+ while (*val) {
+ if (!((*val >= '0' && *val <= '9') ||
+ *val == '/' || *val == ','))
+ return 0;
+ val++;
+ }
+
+ return 1;
+}
+
+
+enum dpp_status_error dpp_conn_status_result_rx(struct dpp_authentication *auth,
+ const u8 *hdr,
+ const u8 *attr_start,
+ size_t attr_len,
+ u8 *ssid, size_t *ssid_len,
+ char **channel_list)
+{
+ const u8 *wrapped_data, *status, *e_nonce;
+ u16 wrapped_data_len, status_len, e_nonce_len;
+ const u8 *addr[2];
+ size_t len[2];
+ u8 *unwrapped = NULL;
+ size_t unwrapped_len = 0;
+ enum dpp_status_error ret = 256;
+ struct json_token *root = NULL, *token;
+ struct wpabuf *ssid64;
+
+ *ssid_len = 0;
+ *channel_list = NULL;
+
+ wrapped_data = dpp_get_attr(attr_start, attr_len, DPP_ATTR_WRAPPED_DATA,
+ &wrapped_data_len);
+ if (!wrapped_data || wrapped_data_len < AES_BLOCK_SIZE) {
+ dpp_auth_fail(auth,
+ "Missing or invalid required Wrapped Data attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Wrapped data",
+ wrapped_data, wrapped_data_len);
+
+ attr_len = wrapped_data - 4 - attr_start;
+
+ addr[0] = hdr;
+ len[0] = DPP_HDR_LEN;
+ addr[1] = attr_start;
+ len[1] = attr_len;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[0]", addr[0], len[0]);
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[1]", addr[1], len[1]);
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV ciphertext",
+ wrapped_data, wrapped_data_len);
+ unwrapped_len = wrapped_data_len - AES_BLOCK_SIZE;
+ unwrapped = os_malloc(unwrapped_len);
+ if (!unwrapped)
+ goto fail;
+ if (aes_siv_decrypt(auth->ke, auth->curve->hash_len,
+ wrapped_data, wrapped_data_len,
+ 2, addr, len, unwrapped) < 0) {
+ dpp_auth_fail(auth, "AES-SIV decryption failed");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: AES-SIV cleartext",
+ unwrapped, unwrapped_len);
+
+ if (dpp_check_attrs(unwrapped, unwrapped_len) < 0) {
+ dpp_auth_fail(auth, "Invalid attribute in unwrapped data");
+ goto fail;
+ }
+
+ e_nonce = dpp_get_attr(unwrapped, unwrapped_len,
+ DPP_ATTR_ENROLLEE_NONCE,
+ &e_nonce_len);
+ if (!e_nonce || e_nonce_len != auth->curve->nonce_len) {
+ dpp_auth_fail(auth,
+ "Missing or invalid Enrollee Nonce attribute");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "DPP: Enrollee Nonce", e_nonce, e_nonce_len);
+ if (os_memcmp(e_nonce, auth->e_nonce, e_nonce_len) != 0) {
+ dpp_auth_fail(auth, "Enrollee Nonce mismatch");
+ wpa_hexdump(MSG_DEBUG, "DPP: Expected Enrollee Nonce",
+ auth->e_nonce, e_nonce_len);
+ goto fail;
+ }
+
+ status = dpp_get_attr(unwrapped, unwrapped_len, DPP_ATTR_CONN_STATUS,
+ &status_len);
+ if (!status) {
+ dpp_auth_fail(auth,
+ "Missing required DPP Connection Status attribute");
+ goto fail;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: connStatus JSON",
+ status, status_len);
+
+ root = json_parse((const char *) status, status_len);
+ if (!root) {
+ dpp_auth_fail(auth, "Could not parse connStatus");
+ goto fail;
+ }
+
+ ssid64 = json_get_member_base64url(root, "ssid64");
+ if (ssid64 && wpabuf_len(ssid64) <= SSID_MAX_LEN) {
+ *ssid_len = wpabuf_len(ssid64);
+ os_memcpy(ssid, wpabuf_head(ssid64), *ssid_len);
+ }
+ wpabuf_free(ssid64);
+
+ token = json_get_member(root, "channelList");
+ if (token && token->type == JSON_STRING &&
+ valid_channel_list(token->string))
+ *channel_list = os_strdup(token->string);
+
+ token = json_get_member(root, "result");
+ if (!token || token->type != JSON_NUMBER) {
+ dpp_auth_fail(auth, "No connStatus - result");
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG, "DPP: result %d", token->number);
+ ret = token->number;
+
+fail:
+ json_free(root);
+ bin_clear_free(unwrapped, unwrapped_len);
+ return ret;
+}
+
+
+struct wpabuf * dpp_build_conn_status(enum dpp_status_error result,
+ const u8 *ssid, size_t ssid_len,
+ const char *channel_list)
+{
+ struct wpabuf *json;
+
+ json = wpabuf_alloc(1000);
+ if (!json)
+ return NULL;
+ json_start_object(json, NULL);
+ json_add_int(json, "result", result);
+ if (ssid) {
+ json_value_sep(json);
+ if (json_add_base64url(json, "ssid64", ssid, ssid_len) < 0) {
+ wpabuf_free(json);
+ return NULL;
+ }
+ }
+ if (channel_list) {
+ json_value_sep(json);
+ json_add_string(json, "channelList", channel_list);
+ }
+ json_end_object(json);
+ wpa_hexdump_ascii(MSG_DEBUG, "DPP: connStatus JSON",
+ wpabuf_head(json), wpabuf_len(json));
+
+ return json;
+}
+
+
+struct wpabuf * dpp_build_conn_status_result(struct dpp_authentication *auth,
+ enum dpp_status_error result,
+ const u8 *ssid, size_t ssid_len,
+ const char *channel_list)
+{
+ struct wpabuf *msg = NULL, *clear = NULL, *json;
+ size_t nonce_len, clear_len, attr_len;
+ const u8 *addr[2];
+ size_t len[2];
+ u8 *wrapped;
+
+ json = dpp_build_conn_status(result, ssid, ssid_len, channel_list);
+ if (!json)
+ return NULL;
+
+ nonce_len = auth->curve->nonce_len;
+ clear_len = 5 + 4 + nonce_len + 4 + wpabuf_len(json);
+ attr_len = 4 + clear_len + AES_BLOCK_SIZE;
+ clear = wpabuf_alloc(clear_len);
+ msg = dpp_alloc_msg(DPP_PA_CONNECTION_STATUS_RESULT, attr_len);
+ if (!clear || !msg)
+ goto fail;
+
+ /* E-nonce */
+ wpabuf_put_le16(clear, DPP_ATTR_ENROLLEE_NONCE);
+ wpabuf_put_le16(clear, nonce_len);
+ wpabuf_put_data(clear, auth->e_nonce, nonce_len);
+
+ /* DPP Connection Status */
+ wpabuf_put_le16(clear, DPP_ATTR_CONN_STATUS);
+ wpabuf_put_le16(clear, wpabuf_len(json));
+ wpabuf_put_buf(clear, json);
+
+ /* OUI, OUI type, Crypto Suite, DPP frame type */
+ addr[0] = wpabuf_head_u8(msg) + 2;
+ len[0] = 3 + 1 + 1 + 1;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[0]", addr[0], len[0]);
+
+ /* Attributes before Wrapped Data (none) */
+ addr[1] = wpabuf_put(msg, 0);
+ len[1] = 0;
+ wpa_hexdump(MSG_DEBUG, "DDP: AES-SIV AD[1]", addr[1], len[1]);
+
+ /* Wrapped Data */
+ wpabuf_put_le16(msg, DPP_ATTR_WRAPPED_DATA);
+ wpabuf_put_le16(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+ wrapped = wpabuf_put(msg, wpabuf_len(clear) + AES_BLOCK_SIZE);
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: AES-SIV cleartext", clear);
+ if (aes_siv_encrypt(auth->ke, auth->curve->hash_len,
+ wpabuf_head(clear), wpabuf_len(clear),
+ 2, addr, len, wrapped) < 0)
+ goto fail;
+
+ wpa_hexdump_buf(MSG_DEBUG, "DPP: Connection Status Result attributes",
+ msg);
+ wpabuf_free(json);
+ wpabuf_free(clear);
+ return msg;
+fail:
+ wpabuf_free(json);
+ wpabuf_free(clear);
+ wpabuf_free(msg);
+ return NULL;
+}
+
+#endif /* CONFIG_DPP2 */
+
+
+void dpp_configurator_free(struct dpp_configurator *conf)
+{
+ if (!conf)
+ return;
+ crypto_ec_key_deinit(conf->csign);
+ os_free(conf->kid);
+ os_free(conf->connector);
+ crypto_ec_key_deinit(conf->connector_key);
+ crypto_ec_key_deinit(conf->pp_key);
+ os_free(conf);
+}
+
+
+int dpp_configurator_get_key(const struct dpp_configurator *conf, char *buf,
+ size_t buflen)
+{
+ struct wpabuf *key;
+ int ret = -1;
+
+ if (!conf->csign)
+ return -1;
+
+ key = crypto_ec_key_get_ecprivate_key(conf->csign, true);
+ if (!key)
+ return -1;
+
+ ret = wpa_snprintf_hex(buf, buflen, wpabuf_head(key), wpabuf_len(key));
+
+ wpabuf_clear_free(key);
+ return ret;
+}
+
+
+static int dpp_configurator_gen_kid(struct dpp_configurator *conf)
+{
+ struct wpabuf *csign_pub = NULL;
+ const u8 *addr[1];
+ size_t len[1];
+ int res;
+
+ csign_pub = crypto_ec_key_get_pubkey_point(conf->csign, 1);
+ if (!csign_pub) {
+ wpa_printf(MSG_INFO, "DPP: Failed to extract C-sign-key");
+ return -1;
+ }
+
+ /* kid = SHA256(ANSI X9.63 uncompressed C-sign-key) */
+ addr[0] = wpabuf_head(csign_pub);
+ len[0] = wpabuf_len(csign_pub);
+ res = sha256_vector(1, addr, len, conf->kid_hash);
+ wpabuf_free(csign_pub);
+ if (res < 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Failed to derive kid for C-sign-key");
+ return -1;
+ }
+
+ conf->kid = base64_url_encode(conf->kid_hash, sizeof(conf->kid_hash),
+ NULL);
+ return conf->kid ? 0 : -1;
+}
+
+
+static struct dpp_configurator *
+dpp_keygen_configurator(const char *curve, const u8 *privkey,
+ size_t privkey_len, const u8 *pp_key, size_t pp_key_len)
+{
+ struct dpp_configurator *conf;
+
+ conf = os_zalloc(sizeof(*conf));
+ if (!conf)
+ return NULL;
+
+ conf->curve = dpp_get_curve_name(curve);
+ if (!conf->curve) {
+ wpa_printf(MSG_INFO, "DPP: Unsupported curve: %s", curve);
+ os_free(conf);
+ return NULL;
+ }
+
+ if (privkey)
+ conf->csign = dpp_set_keypair(&conf->curve, privkey,
+ privkey_len);
+ else
+ conf->csign = dpp_gen_keypair(conf->curve);
+ if (pp_key)
+ conf->pp_key = dpp_set_keypair(&conf->curve, pp_key,
+ pp_key_len);
+ else
+ conf->pp_key = dpp_gen_keypair(conf->curve);
+ if (!conf->csign || !conf->pp_key)
+ goto fail;
+ conf->own = 1;
+
+ if (dpp_configurator_gen_kid(conf) < 0)
+ goto fail;
+ return conf;
+fail:
+ dpp_configurator_free(conf);
+ return NULL;
+}
+
+
+int dpp_configurator_own_config(struct dpp_authentication *auth,
+ const char *curve, int ap)
+{
+ struct wpabuf *conf_obj;
+ int ret = -1;
+
+ if (!auth->conf) {
+ wpa_printf(MSG_DEBUG, "DPP: No configurator specified");
+ return -1;
+ }
+
+ auth->curve = dpp_get_curve_name(curve);
+ if (!auth->curve) {
+ wpa_printf(MSG_INFO, "DPP: Unsupported curve: %s", curve);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Building own configuration/connector with curve %s",
+ auth->curve->name);
+
+ auth->own_protocol_key = dpp_gen_keypair(auth->curve);
+ if (!auth->own_protocol_key)
+ return -1;
+ dpp_copy_netaccesskey(auth, &auth->conf_obj[0]);
+ auth->peer_protocol_key = auth->own_protocol_key;
+ dpp_copy_csign(&auth->conf_obj[0], auth->conf->csign);
+
+ conf_obj = dpp_build_conf_obj(auth, ap, 0, NULL);
+ if (!conf_obj) {
+ wpabuf_free(auth->conf_obj[0].c_sign_key);
+ auth->conf_obj[0].c_sign_key = NULL;
+ goto fail;
+ }
+ ret = dpp_parse_conf_obj(auth, wpabuf_head(conf_obj),
+ wpabuf_len(conf_obj));
+fail:
+ wpabuf_free(conf_obj);
+ auth->peer_protocol_key = NULL;
+ return ret;
+}
+
+
+static int dpp_compatible_netrole(const char *role1, const char *role2)
+{
+ return (os_strcmp(role1, "sta") == 0 && os_strcmp(role2, "ap") == 0) ||
+ (os_strcmp(role1, "ap") == 0 && os_strcmp(role2, "sta") == 0);
+}
+
+
+static int dpp_connector_compatible_group(struct json_token *root,
+ const char *group_id,
+ const char *net_role,
+ bool reconfig)
+{
+ struct json_token *groups, *token;
+
+ groups = json_get_member(root, "groups");
+ if (!groups || groups->type != JSON_ARRAY)
+ return 0;
+
+ for (token = groups->child; token; token = token->sibling) {
+ struct json_token *id, *role;
+
+ id = json_get_member(token, "groupId");
+ if (!id || id->type != JSON_STRING)
+ continue;
+
+ role = json_get_member(token, "netRole");
+ if (!role || role->type != JSON_STRING)
+ continue;
+
+ if (os_strcmp(id->string, "*") != 0 &&
+ os_strcmp(group_id, "*") != 0 &&
+ os_strcmp(id->string, group_id) != 0)
+ continue;
+
+ if (reconfig && os_strcmp(net_role, "configurator") == 0)
+ return 1;
+ if (!reconfig && dpp_compatible_netrole(role->string, net_role))
+ return 1;
+ }
+
+ return 0;
+}
+
+
+int dpp_connector_match_groups(struct json_token *own_root,
+ struct json_token *peer_root, bool reconfig)
+{
+ struct json_token *groups, *token;
+
+ groups = json_get_member(peer_root, "groups");
+ if (!groups || groups->type != JSON_ARRAY) {
+ wpa_printf(MSG_DEBUG, "DPP: No peer groups array found");
+ return 0;
+ }
+
+ for (token = groups->child; token; token = token->sibling) {
+ struct json_token *id, *role;
+
+ id = json_get_member(token, "groupId");
+ if (!id || id->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Missing peer groupId string");
+ continue;
+ }
+
+ role = json_get_member(token, "netRole");
+ if (!role || role->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Missing peer groups::netRole string");
+ continue;
+ }
+ wpa_printf(MSG_DEBUG,
+ "DPP: peer connector group: groupId='%s' netRole='%s'",
+ id->string, role->string);
+ if (dpp_connector_compatible_group(own_root, id->string,
+ role->string, reconfig)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Compatible group/netRole in own connector");
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+
+struct json_token * dpp_parse_own_connector(const char *own_connector)
+{
+ unsigned char *own_conn;
+ size_t own_conn_len;
+ const char *pos, *end;
+ struct json_token *own_root;
+
+ pos = os_strchr(own_connector, '.');
+ if (!pos) {
+ wpa_printf(MSG_DEBUG, "DPP: Own connector is missing the first dot (.)");
+ return NULL;
+ }
+ pos++;
+ end = os_strchr(pos, '.');
+ if (!end) {
+ wpa_printf(MSG_DEBUG, "DPP: Own connector is missing the second dot (.)");
+ return NULL;
+ }
+ own_conn = base64_url_decode(pos, end - pos, &own_conn_len);
+ if (!own_conn) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Failed to base64url decode own signedConnector JWS Payload");
+ return NULL;
+ }
+
+ own_root = json_parse((const char *) own_conn, own_conn_len);
+ os_free(own_conn);
+ if (!own_root)
+ wpa_printf(MSG_DEBUG, "DPP: Failed to parse local connector");
+
+ return own_root;
+}
+
+
+enum dpp_status_error
+dpp_peer_intro(struct dpp_introduction *intro, const char *own_connector,
+ const u8 *net_access_key, size_t net_access_key_len,
+ const u8 *csign_key, size_t csign_key_len,
+ const u8 *peer_connector, size_t peer_connector_len,
+ os_time_t *expiry, u8 *peer_key_hash)
+{
+ struct json_token *root = NULL, *netkey, *token;
+ struct json_token *own_root = NULL;
+ enum dpp_status_error ret = 255, res;
+ struct crypto_ec_key *own_key = NULL;
+ struct wpabuf *own_key_pub = NULL;
+ const struct dpp_curve_params *curve, *own_curve;
+ struct dpp_signed_connector_info info;
+ size_t Nx_len;
+ u8 Nx[DPP_MAX_SHARED_SECRET_LEN];
+
+ os_memset(intro, 0, sizeof(*intro));
+ os_memset(&info, 0, sizeof(info));
+ if (expiry)
+ *expiry = 0;
+
+ own_key = dpp_set_keypair(&own_curve, net_access_key,
+ net_access_key_len);
+ if (!own_key) {
+ wpa_printf(MSG_ERROR, "DPP: Failed to parse own netAccessKey");
+ goto fail;
+ }
+
+ own_root = dpp_parse_own_connector(own_connector);
+ if (!own_root)
+ goto fail;
+
+ res = dpp_check_signed_connector(&info, csign_key, csign_key_len,
+ peer_connector, peer_connector_len);
+ if (res != DPP_STATUS_OK) {
+ ret = res;
+ goto fail;
+ }
+
+ root = json_parse((const char *) info.payload, info.payload_len);
+ if (!root) {
+ wpa_printf(MSG_DEBUG, "DPP: JSON parsing of connector failed");
+ ret = DPP_STATUS_INVALID_CONNECTOR;
+ goto fail;
+ }
+
+ if (!dpp_connector_match_groups(own_root, root, false)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Peer connector does not include compatible group netrole with own connector");
+ ret = DPP_STATUS_NO_MATCH;
+ goto fail;
+ }
+
+ token = json_get_member(root, "expiry");
+ if (!token || token->type != JSON_STRING) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: No expiry string found - connector does not expire");
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: expiry = %s", token->string);
+ if (dpp_key_expired(token->string, expiry)) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Connector (netAccessKey) has expired");
+ ret = DPP_STATUS_INVALID_CONNECTOR;
+ goto fail;
+ }
+ }
+
+#ifdef CONFIG_DPP3
+ token = json_get_member(root, "version");
+ if (token && token->type == JSON_NUMBER) {
+ wpa_printf(MSG_DEBUG, "DPP: version = %d", token->number);
+ intro->peer_version = token->number;
+ }
+#endif /* CONFIG_DPP3 */
+
+ netkey = json_get_member(root, "netAccessKey");
+ if (!netkey || netkey->type != JSON_OBJECT) {
+ wpa_printf(MSG_DEBUG, "DPP: No netAccessKey object found");
+ ret = DPP_STATUS_INVALID_CONNECTOR;
+ goto fail;
+ }
+
+ intro->peer_key = dpp_parse_jwk(netkey, &curve);
+ if (!intro->peer_key) {
+ ret = DPP_STATUS_INVALID_CONNECTOR;
+ goto fail;
+ }
+ dpp_debug_print_key("DPP: Received netAccessKey", intro->peer_key);
+
+ if (own_curve != curve) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Mismatching netAccessKey curves (%s != %s)",
+ own_curve->name, curve->name);
+ ret = DPP_STATUS_INVALID_CONNECTOR;
+ goto fail;
+ }
+
+ /* ECDH: N = nk * PK */
+ if (dpp_ecdh(own_key, intro->peer_key, Nx, &Nx_len) < 0)
+ goto fail;
+
+ wpa_hexdump_key(MSG_DEBUG, "DPP: ECDH shared secret (N.x)",
+ Nx, Nx_len);
+
+ /* PMK = HKDF(<>, "DPP PMK", N.x) */
+ if (dpp_derive_pmk(Nx, Nx_len, intro->pmk, curve->hash_len) < 0) {
+ wpa_printf(MSG_ERROR, "DPP: Failed to derive PMK");
+ goto fail;
+ }
+ intro->pmk_len = curve->hash_len;
+
+ /* PMKID = Truncate-128(H(min(NK.x, PK.x) | max(NK.x, PK.x))) */
+ if (dpp_derive_pmkid(curve, own_key, intro->peer_key, intro->pmkid) <
+ 0) {
+ wpa_printf(MSG_ERROR, "DPP: Failed to derive PMKID");
+ goto fail;
+ }
+
+#ifdef CONFIG_DPP3
+ if (dpp_hpke_suite(curve->ike_group, &intro->kem_id, &intro->kdf_id,
+ &intro->aead_id) < 0) {
+ wpa_printf(MSG_ERROR, "DPP: Unsupported group %d",
+ curve->ike_group);
+ goto fail;
+ }
+#endif /* CONFIG_DPP3 */
+
+ if (peer_key_hash)
+ dpp_get_pubkey_hash(intro->peer_key, peer_key_hash);
+
+ ret = DPP_STATUS_OK;
+fail:
+ if (ret != DPP_STATUS_OK)
+ dpp_peer_intro_deinit(intro);
+ os_memset(Nx, 0, sizeof(Nx));
+ os_free(info.payload);
+ crypto_ec_key_deinit(own_key);
+ wpabuf_free(own_key_pub);
+ json_free(root);
+ json_free(own_root);
+ return ret;
+}
+
+
+void dpp_peer_intro_deinit(struct dpp_introduction *intro)
+{
+ if (!intro)
+ return;
+
+ crypto_ec_key_deinit(intro->peer_key);
+ os_memset(intro, 0, sizeof(*intro));
+}
+
+
+#ifdef CONFIG_DPP3
+int dpp_get_connector_version(const char *connector)
+{
+ struct json_token *root, *token;
+ int ver = -1;
+
+ root = dpp_parse_own_connector(connector);
+ if (!root)
+ return -1;
+
+ token = json_get_member(root, "version");
+ if (token && token->type == JSON_NUMBER)
+ ver = token->number;
+
+ json_free(root);
+ return ver;
+}
+#endif /* CONFIG_DPP3 */
+
+
+unsigned int dpp_next_id(struct dpp_global *dpp)
+{
+ struct dpp_bootstrap_info *bi;
+ unsigned int max_id = 0;
+
+ dl_list_for_each(bi, &dpp->bootstrap, struct dpp_bootstrap_info, list) {
+ if (bi->id > max_id)
+ max_id = bi->id;
+ }
+ return max_id + 1;
+}
+
+
+static int dpp_bootstrap_del(struct dpp_global *dpp, unsigned int id)
+{
+ struct dpp_bootstrap_info *bi, *tmp;
+ int found = 0;
+
+ if (!dpp)
+ return -1;
+
+ dl_list_for_each_safe(bi, tmp, &dpp->bootstrap,
+ struct dpp_bootstrap_info, list) {
+ if (id && bi->id != id)
+ continue;
+ found = 1;
+#ifdef CONFIG_DPP2
+ if (dpp->remove_bi)
+ dpp->remove_bi(dpp->cb_ctx, bi);
+#endif /* CONFIG_DPP2 */
+ dl_list_del(&bi->list);
+ dpp_bootstrap_info_free(bi);
+ }
+
+ if (id == 0)
+ return 0; /* flush succeeds regardless of entries found */
+ return found ? 0 : -1;
+}
+
+
+struct dpp_bootstrap_info * dpp_add_qr_code(struct dpp_global *dpp,
+ const char *uri)
+{
+ struct dpp_bootstrap_info *bi;
+
+ if (!dpp)
+ return NULL;
+
+ bi = dpp_parse_uri(uri);
+ if (!bi)
+ return NULL;
+
+ bi->type = DPP_BOOTSTRAP_QR_CODE;
+ bi->id = dpp_next_id(dpp);
+ dl_list_add(&dpp->bootstrap, &bi->list);
+ return bi;
+}
+
+
+struct dpp_bootstrap_info * dpp_add_nfc_uri(struct dpp_global *dpp,
+ const char *uri)
+{
+ struct dpp_bootstrap_info *bi;
+
+ if (!dpp)
+ return NULL;
+
+ bi = dpp_parse_uri(uri);
+ if (!bi)
+ return NULL;
+
+ bi->type = DPP_BOOTSTRAP_NFC_URI;
+ bi->id = dpp_next_id(dpp);
+ dl_list_add(&dpp->bootstrap, &bi->list);
+ return bi;
+}
+
+
+static int dpp_parse_supported_curves_list(struct dpp_bootstrap_info *bi,
+ char *txt)
+{
+ char *token, *context = NULL;
+ u8 curves = 0;
+
+ if (!txt)
+ return 0;
+
+ while ((token = str_token(txt, ":", &context))) {
+ if (os_strcmp(token, "P-256") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_P_256);
+ } else if (os_strcmp(token, "P-384") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_P_384);
+ } else if (os_strcmp(token, "P-521") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_P_521);
+ } else if (os_strcmp(token, "BP-256") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_BP_256);
+ } else if (os_strcmp(token, "BP-384") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_BP_384);
+ } else if (os_strcmp(token, "BP-512") == 0) {
+ curves |= BIT(DPP_BOOTSTRAP_CURVE_BP_512);
+ } else {
+ wpa_printf(MSG_DEBUG, "DPP: Unsupported curve '%s'",
+ token);
+ return -1;
+ }
+ }
+ bi->supported_curves = curves;
+
+ wpa_printf(MSG_DEBUG, "DPP: URI supported curves: 0x%x",
+ bi->supported_curves);
+
+ return 0;
+}
+
+
+int dpp_bootstrap_gen(struct dpp_global *dpp, const char *cmd)
+{
+ char *mac = NULL, *info = NULL, *curve = NULL;
+ char *key = NULL, *supported_curves = NULL, *host = NULL;
+ u8 *privkey = NULL;
+ size_t privkey_len = 0;
+ int ret = -1;
+ struct dpp_bootstrap_info *bi;
+
+ if (!dpp)
+ return -1;
+
+ bi = os_zalloc(sizeof(*bi));
+ if (!bi)
+ goto fail;
+
+ if (os_strstr(cmd, "type=qrcode"))
+ bi->type = DPP_BOOTSTRAP_QR_CODE;
+ else if (os_strstr(cmd, "type=pkex"))
+ bi->type = DPP_BOOTSTRAP_PKEX;
+ else if (os_strstr(cmd, "type=nfc-uri"))
+ bi->type = DPP_BOOTSTRAP_NFC_URI;
+ else
+ goto fail;
+
+ bi->chan = get_param(cmd, " chan=");
+ mac = get_param(cmd, " mac=");
+ info = get_param(cmd, " info=");
+ curve = get_param(cmd, " curve=");
+ key = get_param(cmd, " key=");
+ supported_curves = get_param(cmd, " supported_curves=");
+ host = get_param(cmd, " host=");
+
+ if (key) {
+ privkey_len = os_strlen(key) / 2;
+ privkey = os_malloc(privkey_len);
+ if (!privkey ||
+ hexstr2bin(key, privkey, privkey_len) < 0)
+ goto fail;
+ }
+
+ if (dpp_keygen(bi, curve, privkey, privkey_len) < 0 ||
+ dpp_parse_uri_chan_list(bi, bi->chan) < 0 ||
+ dpp_parse_uri_mac(bi, mac) < 0 ||
+ dpp_parse_uri_info(bi, info) < 0 ||
+ dpp_parse_supported_curves_list(bi, supported_curves) < 0 ||
+ dpp_parse_uri_host(bi, host) < 0 ||
+ dpp_gen_uri(bi) < 0)
+ goto fail;
+
+ bi->id = dpp_next_id(dpp);
+ dl_list_add(&dpp->bootstrap, &bi->list);
+ ret = bi->id;
+ bi = NULL;
+fail:
+ os_free(curve);
+ os_free(mac);
+ os_free(info);
+ str_clear_free(key);
+ os_free(supported_curves);
+ os_free(host);
+ bin_clear_free(privkey, privkey_len);
+ dpp_bootstrap_info_free(bi);
+ return ret;
+}
+
+
+struct dpp_bootstrap_info *
+dpp_bootstrap_get_id(struct dpp_global *dpp, unsigned int id)
+{
+ struct dpp_bootstrap_info *bi;
+
+ if (!dpp)
+ return NULL;
+
+ dl_list_for_each(bi, &dpp->bootstrap, struct dpp_bootstrap_info, list) {
+ if (bi->id == id)
+ return bi;
+ }
+ return NULL;
+}
+
+
+int dpp_bootstrap_remove(struct dpp_global *dpp, const char *id)
+{
+ unsigned int id_val;
+
+ if (os_strcmp(id, "*") == 0) {
+ id_val = 0;
+ } else {
+ id_val = atoi(id);
+ if (id_val == 0)
+ return -1;
+ }
+
+ return dpp_bootstrap_del(dpp, id_val);
+}
+
+
+const char * dpp_bootstrap_get_uri(struct dpp_global *dpp, unsigned int id)
+{
+ struct dpp_bootstrap_info *bi;
+
+ bi = dpp_bootstrap_get_id(dpp, id);
+ if (!bi)
+ return NULL;
+ return bi->uri;
+}
+
+
+int dpp_bootstrap_info(struct dpp_global *dpp, int id,
+ char *reply, int reply_size)
+{
+ struct dpp_bootstrap_info *bi;
+ char pkhash[2 * SHA256_MAC_LEN + 1];
+ char supp_curves[100];
+ char host[100];
+ int ret;
+
+ bi = dpp_bootstrap_get_id(dpp, id);
+ if (!bi)
+ return -1;
+ wpa_snprintf_hex(pkhash, sizeof(pkhash), bi->pubkey_hash,
+ SHA256_MAC_LEN);
+
+ supp_curves[0] = '\0';
+ if (bi->supported_curves) {
+ size_t i;
+ char *pos = supp_curves;
+ char *end = &supp_curves[sizeof(supp_curves)];
+ const char *curve[6] = { "P-256", "P-384", "P-521",
+ "BP-256", "BP-384", "BP-512" };
+
+ ret = os_snprintf(pos, end - pos, "supp_curves=");
+ if (os_snprintf_error(end - pos, ret))
+ return -1;
+ pos += ret;
+
+ for (i = 0; i < ARRAY_SIZE(curve); i++) {
+ if (!(bi->supported_curves & BIT(i)))
+ continue;
+ ret = os_snprintf(pos, end - pos, "%s:", curve[i]);
+ if (os_snprintf_error(end - pos, ret))
+ return -1;
+ pos += ret;
+ }
+
+ if (pos[-1] == ':')
+ pos[-1] = '\n';
+ else
+ supp_curves[0] = '\0';
+ }
+
+ host[0] = '\0';
+ if (bi->host) {
+ char buf[100];
+
+ ret = os_snprintf(host, sizeof(host), "host=%s %u\n",
+ hostapd_ip_txt(bi->host, buf, sizeof(buf)),
+ bi->port);
+ if (os_snprintf_error(sizeof(host), ret))
+ return -1;
+ }
+
+ return os_snprintf(reply, reply_size, "type=%s\n"
+ "mac_addr=" MACSTR "\n"
+ "info=%s\n"
+ "num_freq=%u\n"
+ "use_freq=%u\n"
+ "curve=%s\n"
+ "pkhash=%s\n"
+ "version=%d\n%s%s",
+ dpp_bootstrap_type_txt(bi->type),
+ MAC2STR(bi->mac_addr),
+ bi->info ? bi->info : "",
+ bi->num_freq,
+ bi->num_freq == 1 ? bi->freq[0] : 0,
+ bi->curve->name,
+ pkhash,
+ bi->version,
+ supp_curves,
+ host);
+}
+
+
+int dpp_bootstrap_set(struct dpp_global *dpp, int id, const char *params)
+{
+ struct dpp_bootstrap_info *bi;
+
+ bi = dpp_bootstrap_get_id(dpp, id);
+ if (!bi)
+ return -1;
+
+ str_clear_free(bi->configurator_params);
+
+ if (params) {
+ bi->configurator_params = os_strdup(params);
+ return bi->configurator_params ? 0 : -1;
+ }
+
+ bi->configurator_params = NULL;
+ return 0;
+}
+
+
+void dpp_bootstrap_find_pair(struct dpp_global *dpp, const u8 *i_bootstrap,
+ const u8 *r_bootstrap,
+ struct dpp_bootstrap_info **own_bi,
+ struct dpp_bootstrap_info **peer_bi)
+{
+ struct dpp_bootstrap_info *bi;
+
+ *own_bi = NULL;
+ *peer_bi = NULL;
+ if (!dpp)
+ return;
+
+ dl_list_for_each(bi, &dpp->bootstrap, struct dpp_bootstrap_info, list) {
+ if (!*own_bi && bi->own &&
+ os_memcmp(bi->pubkey_hash, r_bootstrap,
+ SHA256_MAC_LEN) == 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Found matching own bootstrapping information");
+ *own_bi = bi;
+ }
+
+ if (!*peer_bi && !bi->own &&
+ os_memcmp(bi->pubkey_hash, i_bootstrap,
+ SHA256_MAC_LEN) == 0) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Found matching peer bootstrapping information");
+ *peer_bi = bi;
+ }
+
+ if (*own_bi && *peer_bi)
+ break;
+ }
+}
+
+
+#ifdef CONFIG_DPP2
+struct dpp_bootstrap_info * dpp_bootstrap_find_chirp(struct dpp_global *dpp,
+ const u8 *hash)
+{
+ struct dpp_bootstrap_info *bi;
+
+ if (!dpp)
+ return NULL;
+
+ dl_list_for_each(bi, &dpp->bootstrap, struct dpp_bootstrap_info, list) {
+ if (!bi->own && os_memcmp(bi->pubkey_hash_chirp, hash,
+ SHA256_MAC_LEN) == 0)
+ return bi;
+ }
+
+ return NULL;
+}
+#endif /* CONFIG_DPP2 */
+
+
+static int dpp_nfc_update_bi_channel(struct dpp_bootstrap_info *own_bi,
+ struct dpp_bootstrap_info *peer_bi)
+{
+ unsigned int i, freq = 0;
+ enum hostapd_hw_mode mode;
+ u8 op_class, channel;
+ char chan[20];
+
+ if (peer_bi->num_freq == 0 && !peer_bi->channels_listed)
+ return 0; /* no channel preference/constraint */
+
+ for (i = 0; i < peer_bi->num_freq; i++) {
+ if ((own_bi->num_freq == 0 && !own_bi->channels_listed) ||
+ freq_included(own_bi->freq, own_bi->num_freq,
+ peer_bi->freq[i])) {
+ freq = peer_bi->freq[i];
+ break;
+ }
+ }
+ if (!freq) {
+ wpa_printf(MSG_DEBUG, "DPP: No common channel found");
+ return -1;
+ }
+
+ mode = ieee80211_freq_to_channel_ext(freq, 0, 0, &op_class, &channel);
+ if (mode == NUM_HOSTAPD_MODES) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Could not determine operating class or channel number for %u MHz",
+ freq);
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Selected %u MHz (op_class %u channel %u) as the negotiation channel based on information from NFC negotiated handover",
+ freq, op_class, channel);
+ os_snprintf(chan, sizeof(chan), "%u/%u", op_class, channel);
+ os_free(own_bi->chan);
+ own_bi->chan = os_strdup(chan);
+ own_bi->freq[0] = freq;
+ own_bi->num_freq = 1;
+ os_free(peer_bi->chan);
+ peer_bi->chan = os_strdup(chan);
+ peer_bi->freq[0] = freq;
+ peer_bi->num_freq = 1;
+
+ return dpp_gen_uri(own_bi);
+}
+
+
+static int dpp_nfc_update_bi_key(struct dpp_bootstrap_info *own_bi,
+ struct dpp_bootstrap_info *peer_bi)
+{
+ if (peer_bi->curve == own_bi->curve)
+ return 0;
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Update own bootstrapping key to match peer curve from NFC handover");
+
+ crypto_ec_key_deinit(own_bi->pubkey);
+ own_bi->pubkey = NULL;
+
+ if (dpp_keygen(own_bi, peer_bi->curve->name, NULL, 0) < 0 ||
+ dpp_gen_uri(own_bi) < 0)
+ goto fail;
+
+ return 0;
+fail:
+ dl_list_del(&own_bi->list);
+ dpp_bootstrap_info_free(own_bi);
+ return -1;
+}
+
+
+int dpp_nfc_update_bi(struct dpp_bootstrap_info *own_bi,
+ struct dpp_bootstrap_info *peer_bi)
+{
+ if (dpp_nfc_update_bi_channel(own_bi, peer_bi) < 0 ||
+ dpp_nfc_update_bi_key(own_bi, peer_bi) < 0)
+ return -1;
+ return 0;
+}
+
+
+static unsigned int dpp_next_configurator_id(struct dpp_global *dpp)
+{
+ struct dpp_configurator *conf;
+ unsigned int max_id = 0;
+
+ dl_list_for_each(conf, &dpp->configurator, struct dpp_configurator,
+ list) {
+ if (conf->id > max_id)
+ max_id = conf->id;
+ }
+ return max_id + 1;
+}
+
+
+int dpp_configurator_add(struct dpp_global *dpp, const char *cmd)
+{
+ char *curve;
+ char *key = NULL, *ppkey = NULL;
+ u8 *privkey = NULL, *pp_key = NULL;
+ size_t privkey_len = 0, pp_key_len = 0;
+ int ret = -1;
+ struct dpp_configurator *conf = NULL;
+ const struct dpp_curve_params *net_access_key_curve = NULL;
+
+ curve = get_param(cmd, " net_access_key_curve=");
+ if (curve) {
+ net_access_key_curve = dpp_get_curve_name(curve);
+ if (!net_access_key_curve) {
+ wpa_printf(MSG_DEBUG,
+ "DPP: Unsupported net_access_key_curve: %s",
+ curve);
+ goto fail;
+ }
+ os_free(curve);
+ }
+
+ curve = get_param(cmd, " curve=");
+ key = get_param(cmd, " key=");
+ ppkey = get_param(cmd, " ppkey=");
+
+ if (key) {
+ privkey_len = os_strlen(key) / 2;
+ privkey = os_malloc(privkey_len);
+ if (!privkey ||
+ hexstr2bin(key, privkey, privkey_len) < 0)
+ goto fail;
+ }
+
+ if (ppkey) {
+ pp_key_len = os_strlen(ppkey) / 2;
+ pp_key = os_malloc(pp_key_len);
+ if (!pp_key ||
+ hexstr2bin(ppkey, pp_key, pp_key_len) < 0)
+ goto fail;
+ }
+
+ conf = dpp_keygen_configurator(curve, privkey, privkey_len,
+ pp_key, pp_key_len);
+ if (!conf)
+ goto fail;
+
+ conf->net_access_key_curve = net_access_key_curve;
+ conf->id = dpp_next_configurator_id(dpp);
+ dl_list_add(&dpp->configurator, &conf->list);
+ ret = conf->id;
+ conf = NULL;
+fail:
+ os_free(curve);
+ str_clear_free(key);
+ str_clear_free(ppkey);
+ bin_clear_free(privkey, privkey_len);
+ bin_clear_free(pp_key, pp_key_len);
+ dpp_configurator_free(conf);
+ return ret;
+}
+
+
+int dpp_configurator_set(struct dpp_global *dpp, const char *cmd)
+{
+ unsigned int id;
+ struct dpp_configurator *conf;
+ char *curve;
+
+ id = atoi(cmd);
+ conf = dpp_configurator_get_id(dpp, id);
+ if (!conf)
+ return -1;
+
+ curve = get_param(cmd, " net_access_key_curve=");
+ if (curve) {
+ const struct dpp_curve_params *net_access_key_curve;
+
+ net_access_key_curve = dpp_get_curve_name(curve);
+ os_free(curve);
+ if (!net_access_key_curve)
+ return -1;
+ conf->net_access_key_curve = net_access_key_curve;
+ }
+
+ return 0;
+}
+
+
+static int dpp_configurator_del(struct dpp_global *dpp, unsigned int id)
+{
+ struct dpp_configurator *conf, *tmp;
+ int found = 0;
+
+ if (!dpp)
+ return -1;
+
+ dl_list_for_each_safe(conf, tmp, &dpp->configurator,
+ struct dpp_configurator, list) {
+ if (id && conf->id != id)
+ continue;
+ found = 1;
+ dl_list_del(&conf->list);
+ dpp_configurator_free(conf);
+ }
+
+ if (id == 0)
+ return 0; /* flush succeeds regardless of entries found */
+ return found ? 0 : -1;
+}
+
+
+int dpp_configurator_remove(struct dpp_global *dpp, const char *id)
+{
+ unsigned int id_val;
+
+ if (os_strcmp(id, "*") == 0) {
+ id_val = 0;
+ } else {
+ id_val = atoi(id);
+ if (id_val == 0)
+ return -1;
+ }
+
+ return dpp_configurator_del(dpp, id_val);
+}
+
+
+int dpp_configurator_get_key_id(struct dpp_global *dpp, unsigned int id,
+ char *buf, size_t buflen)
+{
+ struct dpp_configurator *conf;
+
+ conf = dpp_configurator_get_id(dpp, id);
+ if (!conf)
+ return -1;
+
+ return dpp_configurator_get_key(conf, buf, buflen);
+}
+
+
+#ifdef CONFIG_DPP2
+
+int dpp_configurator_from_backup(struct dpp_global *dpp,
+ struct dpp_asymmetric_key *key)
+{
+ struct dpp_configurator *conf;
+ const struct dpp_curve_params *curve, *curve_pp;
+
+ if (!key->csign || !key->pp_key)
+ return -1;
+
+ curve = dpp_get_curve_ike_group(crypto_ec_key_group(key->csign));
+ if (!curve) {
+ wpa_printf(MSG_INFO, "DPP: Unsupported group in c-sign-key");
+ return -1;
+ }
+
+ curve_pp = dpp_get_curve_ike_group(crypto_ec_key_group(key->pp_key));
+ if (!curve_pp) {
+ wpa_printf(MSG_INFO, "DPP: Unsupported group in ppKey");
+ return -1;
+ }
+
+ if (curve != curve_pp) {
+ wpa_printf(MSG_INFO,
+ "DPP: Mismatch in c-sign-key and ppKey groups");
+ return -1;
+ }
+
+ conf = os_zalloc(sizeof(*conf));
+ if (!conf)
+ return -1;
+ conf->curve = curve;
+ conf->csign = key->csign;
+ key->csign = NULL;
+ conf->pp_key = key->pp_key;
+ key->pp_key = NULL;
+ conf->own = 1;
+ if (dpp_configurator_gen_kid(conf) < 0) {
+ dpp_configurator_free(conf);
+ return -1;
+ }
+
+ conf->id = dpp_next_configurator_id(dpp);
+ dl_list_add(&dpp->configurator, &conf->list);
+ return conf->id;
+}
+
+
+struct dpp_configurator * dpp_configurator_find_kid(struct dpp_global *dpp,
+ const u8 *kid)
+{
+ struct dpp_configurator *conf;
+
+ if (!dpp)
+ return NULL;
+
+ dl_list_for_each(conf, &dpp->configurator,
+ struct dpp_configurator, list) {
+ if (os_memcmp(conf->kid_hash, kid, SHA256_MAC_LEN) == 0)
+ return conf;
+ }
+ return NULL;
+}
+
+#endif /* CONFIG_DPP2 */
+
+
+struct dpp_global * dpp_global_init(struct dpp_global_config *config)
+{
+ struct dpp_global *dpp;
+
+ dpp = os_zalloc(sizeof(*dpp));
+ if (!dpp)
+ return NULL;
+#ifdef CONFIG_DPP2
+ dpp->cb_ctx = config->cb_ctx;
+ dpp->remove_bi = config->remove_bi;
+#endif /* CONFIG_DPP2 */
+
+ dl_list_init(&dpp->bootstrap);
+ dl_list_init(&dpp->configurator);
+#ifdef CONFIG_DPP2
+ dl_list_init(&dpp->controllers);
+ dl_list_init(&dpp->tcp_init);
+ dpp->relay_sock = -1;
+#endif /* CONFIG_DPP2 */
+
+ return dpp;
+}
+
+
+void dpp_global_clear(struct dpp_global *dpp)
+{
+ if (!dpp)
+ return;
+
+ dpp_bootstrap_del(dpp, 0);
+ dpp_configurator_del(dpp, 0);
+#ifdef CONFIG_DPP2
+ dpp_tcp_init_flush(dpp);
+ dpp_relay_flush_controllers(dpp);
+ dpp_controller_stop(dpp);
+#endif /* CONFIG_DPP2 */
+}
+
+
+void dpp_global_deinit(struct dpp_global *dpp)
+{
+ dpp_global_clear(dpp);
+ os_free(dpp);
+}
+
+
+void dpp_notify_auth_success(struct dpp_authentication *auth, int initiator)
+{
+ u8 hash[SHA256_MAC_LEN];
+ char hex[SHA256_MAC_LEN * 2 + 1];
+
+ if (auth->peer_protocol_key) {
+ dpp_get_pubkey_hash(auth->peer_protocol_key, hash);
+ wpa_snprintf_hex(hex, sizeof(hex), hash, sizeof(hash));
+ } else {
+ hex[0] = '\0';
+ }
+ wpa_msg(auth->msg_ctx, MSG_INFO,
+ DPP_EVENT_AUTH_SUCCESS "init=%d pkhash=%s own=%d peer=%d",
+ initiator, hex, auth->own_bi ? (int) auth->own_bi->id : -1,
+ auth->peer_bi ? (int) auth->peer_bi->id : -1);
+}
+
+
+#ifdef CONFIG_DPP2
+
+struct wpabuf * dpp_build_presence_announcement(struct dpp_bootstrap_info *bi)
+{
+ struct wpabuf *msg;
+
+ wpa_printf(MSG_DEBUG, "DPP: Build Presence Announcement frame");
+
+ msg = dpp_alloc_msg(DPP_PA_PRESENCE_ANNOUNCEMENT, 4 + SHA256_MAC_LEN);
+ if (!msg)
+ return NULL;
+
+ /* Responder Bootstrapping Key Hash */
+ dpp_build_attr_r_bootstrap_key_hash(msg, bi->pubkey_hash_chirp);
+ wpa_hexdump_buf(MSG_DEBUG,
+ "DPP: Presence Announcement frame attributes", msg);
+ return msg;
+}
+
+
+void dpp_notify_chirp_received(void *msg_ctx, int id, const u8 *src,
+ unsigned int freq, const u8 *hash)
+{
+ char hex[SHA256_MAC_LEN * 2 + 1];
+
+ wpa_snprintf_hex(hex, sizeof(hex), hash, SHA256_MAC_LEN);
+ wpa_msg(msg_ctx, MSG_INFO,
+ DPP_EVENT_CHIRP_RX "id=%d src=" MACSTR " freq=%u hash=%s",
+ id, MAC2STR(src), freq, hex);
+}
+
+#endif /* CONFIG_DPP2 */
+
+
+#ifdef CONFIG_DPP3
+
+struct wpabuf * dpp_build_pb_announcement(struct dpp_bootstrap_info *bi)
+{
+ struct wpabuf *msg;
+ const u8 *r_hash = bi->pubkey_hash_chirp;
+#ifdef CONFIG_TESTING_OPTIONS
+ u8 test_hash[SHA256_MAC_LEN];
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Build Push Button Presence Announcement frame");
+
+ msg = dpp_alloc_msg(DPP_PA_PB_PRESENCE_ANNOUNCEMENT,
+ 4 + SHA256_MAC_LEN);
+ if (!msg)
+ return NULL;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_PB_REQ) {
+ wpa_printf(MSG_INFO,
+ "DPP: TESTING - invalid R-Bootstrap Key Hash");
+ os_memcpy(test_hash, r_hash, SHA256_MAC_LEN);
+ test_hash[SHA256_MAC_LEN - 1] ^= 0x01;
+ r_hash = test_hash;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ /* Responder Bootstrapping Key Hash */
+ dpp_build_attr_r_bootstrap_key_hash(msg, r_hash);
+ wpa_hexdump_buf(MSG_DEBUG,
+ "DPP: Push Button Presence Announcement frame attributes",
+ msg);
+ return msg;
+}
+
+
+struct wpabuf * dpp_build_pb_announcement_resp(struct dpp_bootstrap_info *bi,
+ const u8 *e_hash,
+ const u8 *c_nonce,
+ size_t c_nonce_len)
+{
+ struct wpabuf *msg;
+ const u8 *i_hash = bi->pubkey_hash_chirp;
+#ifdef CONFIG_TESTING_OPTIONS
+ u8 test_hash[SHA256_MAC_LEN];
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ wpa_printf(MSG_DEBUG,
+ "DPP: Build Push Button Presence Announcement Response frame");
+
+ msg = dpp_alloc_msg(DPP_PA_PB_PRESENCE_ANNOUNCEMENT_RESP,
+ 2 * (4 + SHA256_MAC_LEN) + 4 + c_nonce_len);
+ if (!msg)
+ return NULL;
+
+#ifdef CONFIG_TESTING_OPTIONS
+ if (dpp_test == DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_PB_RESP) {
+ wpa_printf(MSG_INFO,
+ "DPP: TESTING - invalid I-Bootstrap Key Hash");
+ os_memcpy(test_hash, i_hash, SHA256_MAC_LEN);
+ test_hash[SHA256_MAC_LEN - 1] ^= 0x01;
+ i_hash = test_hash;
+ } else if (dpp_test == DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_PB_RESP) {
+ wpa_printf(MSG_INFO,
+ "DPP: TESTING - invalid R-Bootstrap Key Hash");
+ os_memcpy(test_hash, e_hash, SHA256_MAC_LEN);
+ test_hash[SHA256_MAC_LEN - 1] ^= 0x01;
+ e_hash = test_hash;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
+
+ /* Initiator Bootstrapping Key Hash */
+ wpa_printf(MSG_DEBUG, "DPP: I-Bootstrap Key Hash");
+ wpabuf_put_le16(msg, DPP_ATTR_I_BOOTSTRAP_KEY_HASH);
+ wpabuf_put_le16(msg, SHA256_MAC_LEN);
+ wpabuf_put_data(msg, i_hash, SHA256_MAC_LEN);
+
+ /* Responder Bootstrapping Key Hash */
+ dpp_build_attr_r_bootstrap_key_hash(msg, e_hash);
+
+ /* Configurator Nonce */
+ wpabuf_put_le16(msg, DPP_ATTR_CONFIGURATOR_NONCE);
+ wpabuf_put_le16(msg, c_nonce_len);
+ wpabuf_put_data(msg, c_nonce, c_nonce_len);
+
+ wpa_hexdump_buf(MSG_DEBUG,
+ "DPP: Push Button Presence Announcement Response frame attributes",
+ msg);
+ return msg;
+}
+
+#endif /* CONFIG_DPP3 */