70 	if (wps->dh_privkey == NULL) {  in wps_derive_keys()
76 	if (pubkey == NULL) {  in wps_derive_keys()
85 	wps->dh_ctx = NULL;  in wps_derive_keys()
87 	if (dh_shared == NULL) {  in wps_derive_keys()
99 	wps->dh_privkey = NULL;  in wps_derive_keys()
121 	wps_kdf(kdk, NULL, 0, "Wi-Fi Easy and Secure Key Derivation",  in wps_derive_keys()
171 	if (encr == NULL || encr_len < 2 * block_size || encr_len % block_size)  in wps_decrypt_encr_settings()
174 		return NULL;  in wps_decrypt_encr_settings()
178 	if (decrypted == NULL)  in wps_decrypt_encr_settings()
179 		return NULL;  in wps_decrypt_encr_settings()
186 		return NULL;  in wps_decrypt_encr_settings()
197 		return NULL;  in wps_decrypt_encr_settings()
204 			return NULL;  in wps_decrypt_encr_settings()
283 	if (wps->event_cb == NULL)  in wps_fail_event()
299 	if (wps->event_cb == NULL)  in wps_success_event()
313 	if (wps->event_cb == NULL)  in wps_pwd_auth_fail_event()
326 	if (wps->event_cb == NULL)  in wps_pbc_overlap_event()
329 	wps->event_cb(wps->cb_ctx, WPS_EV_PBC_OVERLAP, NULL);  in wps_pbc_overlap_event()
335 	if (wps->event_cb == NULL)  in wps_selected_registrar_timeout_event()
338 	wps->event_cb(wps->cb_ctx, WPS_EV_SELECTED_REGISTRAR_TIMEOUT, NULL);  in wps_selected_registrar_timeout_event()
343 	if (wps->event_cb == NULL)  in wps_pbc_timeout_event()
346 	wps->event_cb(wps->cb_ctx, WPS_EV_PBC_TIMEOUT, NULL);  in wps_pbc_timeout_event()
352 	if (wps->event_cb == NULL)  in wps_pbc_active_event()
355 	wps->event_cb(wps->cb_ctx, WPS_EV_PBC_ACTIVE, NULL);  in wps_pbc_active_event()
361 	if (wps->event_cb == NULL)  in wps_pbc_disable_event()
364 	wps->event_cb(wps->cb_ctx, WPS_EV_PBC_DISABLE, NULL);  in wps_pbc_disable_event()
377 	if (plain == NULL) {  in wps_get_oob_cred()
380 		return NULL;  in wps_get_oob_cred()
391 	    wps_build_wfa_ext(plain, 0, NULL, 0, 0)) {  in wps_get_oob_cred()
394 		return NULL;  in wps_get_oob_cred()
434 	if (data == NULL)  in wps_build_nfc_pw_token()
435 		return NULL;  in wps_build_nfc_pw_token()
439 	    wps_build_wfa_ext(data, 0, NULL, 0, 0)) {  in wps_build_nfc_pw_token()
443 		return NULL;  in wps_build_nfc_pw_token()
485 	if (pos == NULL)  in wps_dev_type_str2bin()
491 	if (pos == NULL)  in wps_dev_type_str2bin()
510 		return NULL;  in wps_dev_type_bin2str()
548 	if (str == NULL || str[0] == '\0') {  in wps_config_methods_str2bin()
598 	if (msg == NULL)  in wps_build_wsc_ack()
599 		return NULL;  in wps_build_wsc_ack()
605 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_wsc_ack()
607 		return NULL;  in wps_build_wsc_ack()
621 	if (msg == NULL)  in wps_build_wsc_nack()
622 		return NULL;  in wps_build_wsc_nack()
629 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_wsc_nack()
631 		return NULL;  in wps_build_wsc_nack()
645 	if (pubkey == NULL || dev_pw == NULL)  in wps_nfc_token_build()
646 		return NULL;  in wps_nfc_token_build()
653 		if (tmp == NULL)  in wps_nfc_token_build()
654 			return NULL;  in wps_nfc_token_build()
664 	struct wpabuf *priv = NULL, *pub = NULL;  in wps_nfc_gen_dh()
668 	if (dh_ctx == NULL)  in wps_nfc_gen_dh()
671 	if (pub == NULL) {  in wps_nfc_gen_dh()
696 	if (pw == NULL)  in wps_nfc_token_gen()
697 		return NULL;  in wps_nfc_token_gen()
703 		return NULL;  in wps_nfc_token_gen()
708 		return NULL;  in wps_nfc_token_gen()
725 	if (ctx == NULL)  in wps_build_nfc_handover_req()
726 		return NULL;  in wps_build_nfc_handover_req()
731 	if (nfc_dh_pubkey == NULL) {  in wps_build_nfc_handover_req()
734 		return NULL;  in wps_build_nfc_handover_req()
738 	if (msg == NULL)  in wps_build_nfc_handover_req()
743 				 nfc_dh_pubkey, NULL, 0) ||  in wps_build_nfc_handover_req()
745 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_nfc_handover_req()
747 		return NULL;  in wps_build_nfc_handover_req()
806 	if (ctx == NULL)  in wps_build_nfc_handover_sel()
807 		return NULL;  in wps_build_nfc_handover_sel()
812 	if (nfc_dh_pubkey == NULL) {  in wps_build_nfc_handover_sel()
815 		return NULL;  in wps_build_nfc_handover_sel()
819 	if (msg == NULL)  in wps_build_nfc_handover_sel()
824 				 nfc_dh_pubkey, NULL, 0) ||  in wps_build_nfc_handover_sel()
828 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_nfc_handover_sel()
830 		return NULL;  in wps_build_nfc_handover_sel()
844 	if (ctx == NULL)  in wps_build_nfc_handover_req_p2p()
845 		return NULL;  in wps_build_nfc_handover_req_p2p()
850 	if (nfc_dh_pubkey == NULL) {  in wps_build_nfc_handover_req_p2p()
852 		return NULL;  in wps_build_nfc_handover_req_p2p()
856 	if (msg == NULL)  in wps_build_nfc_handover_req_p2p()
863 				 nfc_dh_pubkey, NULL, 0) ||  in wps_build_nfc_handover_req_p2p()
867 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_nfc_handover_req_p2p()
869 		return NULL;  in wps_build_nfc_handover_req_p2p()
885 	if (ctx == NULL)  in wps_build_nfc_handover_sel_p2p()
886 		return NULL;  in wps_build_nfc_handover_sel_p2p()
891 	if (nfc_dh_pubkey == NULL ||  in wps_build_nfc_handover_sel_p2p()
893 	     nfc_dev_pw == NULL)) {  in wps_build_nfc_handover_sel_p2p()
896 		return NULL;  in wps_build_nfc_handover_sel_p2p()
900 	if (msg == NULL)  in wps_build_nfc_handover_sel_p2p()
907 		dev_pw = NULL;  in wps_build_nfc_handover_sel_p2p()
919 	    wps_build_wfa_ext(msg, 0, NULL, 0, 0)) {  in wps_build_nfc_handover_sel_p2p()
921 		return NULL;  in wps_build_nfc_handover_sel_p2p()