mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-10-06 11:28:38 +02:00
1530 lines
38 KiB
C
1530 lines
38 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2015 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdbool.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <ell/ell.h>
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#include "wscutil.h"
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static const unsigned char wfa_ext[3] = { 0x00, 0x37, 0x2a };
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void wsc_wfa_ext_iter_init(struct wsc_wfa_ext_iter *iter,
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const unsigned char *pdu, unsigned short len)
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{
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iter->pdu = pdu;
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iter->max = len;
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iter->pos = 0;
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}
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bool wsc_wfa_ext_iter_next(struct wsc_wfa_ext_iter *iter)
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{
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const unsigned char *start = iter->pdu + iter->pos;
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const unsigned char *end = iter->pdu + iter->max;
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unsigned char type;
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unsigned char len;
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if (iter->pos + 2 >= iter->max)
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return false;
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type = *start;
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start += 1;
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len = *start;
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start += 1;
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if (start + len > end)
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return false;
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iter->type = type;
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iter->len = len;
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iter->data = start;
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iter->pos = start + len - iter->pdu;
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return true;
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}
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void wsc_attr_iter_init(struct wsc_attr_iter *iter, const unsigned char *pdu,
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unsigned int len)
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{
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iter->pdu = pdu;
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iter->max = len;
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iter->pos = 0;
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}
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bool wsc_attr_iter_next(struct wsc_attr_iter *iter)
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{
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const unsigned char *start = iter->pdu + iter->pos;
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const unsigned char *end = iter->pdu + iter->max;
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unsigned short type;
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unsigned short len;
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/* Make sure we have at least type + len fields */
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if (iter->pos + 4 >= iter->max)
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return false;
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type = l_get_be16(start);
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start += 2;
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len = l_get_be16(start);
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start += 2;
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if (start + len > end)
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return false;
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iter->type = type;
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iter->len = len;
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iter->data = start;
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iter->pos = start + len - iter->pdu;
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return true;
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}
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bool wsc_attr_iter_recurse_wfa_ext(struct wsc_attr_iter *iter,
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struct wsc_wfa_ext_iter *wfa_iter)
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{
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if (iter->type != WSC_ATTR_VENDOR_EXTENSION)
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return false;
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if (iter->len < 3)
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return false;
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if (memcmp(iter->data, wfa_ext, sizeof(wfa_ext)))
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return false;
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wsc_wfa_ext_iter_init(wfa_iter, iter->data + 3, iter->len - 3);
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return true;
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}
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enum attr_flag {
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ATTR_FLAG_REQUIRED, /* Always required */
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ATTR_FLAG_VERSION2, /* Included if Version2 is present */
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ATTR_FLAG_REGISTRAR, /* Included if Selected Registrar is true */
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};
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typedef bool (*attr_handler)(struct wsc_attr_iter *, void *);
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static bool extract_uint8(struct wsc_attr_iter *iter, void *data)
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{
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uint8_t *to = data;
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if (wsc_attr_iter_get_length(iter) != 1)
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return false;
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*to = *wsc_attr_iter_get_data(iter);
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return true;
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}
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static bool extract_uint16(struct wsc_attr_iter *iter, void *data)
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{
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uint16_t *to = data;
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if (wsc_attr_iter_get_length(iter) != 2)
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return false;
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*to = l_get_be16(wsc_attr_iter_get_data(iter));
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return true;
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}
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static bool extract_bool(struct wsc_attr_iter *iter, void *data)
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{
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bool *to = data;
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if (wsc_attr_iter_get_length(iter) != 1)
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return false;
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*to = *wsc_attr_iter_get_data(iter) ? true : false;
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return true;
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}
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static bool extract_uuid(struct wsc_attr_iter *iter, void *data)
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{
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if (wsc_attr_iter_get_length(iter) != 16)
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return false;
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memcpy(data, wsc_attr_iter_get_data(iter), 16);
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return true;
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}
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static bool extract_ascii_string(struct wsc_attr_iter *iter, void *data,
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unsigned int max_len)
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{
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char *out = data;
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const uint8_t *p;
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unsigned int len;
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unsigned int i;
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len = wsc_attr_iter_get_length(iter);
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if (len > max_len)
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return false;
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p = wsc_attr_iter_get_data(iter);
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for (i = 0; i < len; i++) {
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if (!p[i])
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break;
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if (!l_ascii_isprint(p[i]))
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return false;
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}
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memcpy(out, p, i);
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out[i] = '\0';
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return true;
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}
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static bool extract_utf8_string(struct wsc_attr_iter *iter, void *data,
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unsigned int max_len)
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{
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char *out = data;
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const uint8_t *p;
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unsigned int len;
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unsigned int i;
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len = wsc_attr_iter_get_length(iter);
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if (len > max_len)
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return false;
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p = wsc_attr_iter_get_data(iter);
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for (i = 0; i < len; i++) {
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if (!p[i])
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break;
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}
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if (!l_utf8_validate((const char *) p, i, NULL))
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return false;
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memcpy(out, p, i);
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out[i] = '\0';
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return true;
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}
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static bool extract_nonce(struct wsc_attr_iter *iter, void *data)
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{
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if (wsc_attr_iter_get_length(iter) != 16)
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return false;
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memcpy(data, wsc_attr_iter_get_data(iter), 16);
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return true;
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}
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static bool extract_association_state(struct wsc_attr_iter *iter, void *data)
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{
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enum wsc_association_state *out = data;
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uint16_t as;
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if (!extract_uint16(iter, &as))
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return false;
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/* WSC 2.0.5: Table 31 */
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if (as > 4)
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return false;
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*out = as;
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return true;
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}
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static bool extract_authenticator(struct wsc_attr_iter *iter, void *data)
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{
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if (wsc_attr_iter_get_length(iter) != 8)
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return false;
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memcpy(data, wsc_attr_iter_get_data(iter), 8);
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return true;
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}
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static bool extract_configuration_error(struct wsc_attr_iter *iter, void *data)
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{
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enum wsc_configuration_error *out = data;
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uint16_t ce;
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if (!extract_uint16(iter, &ce))
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return false;
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/* WSC 2.0.5: Table 34 */
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if (ce > 20)
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return false;
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*out = ce;
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return true;
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}
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static bool extract_device_name(struct wsc_attr_iter *iter, void *data)
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{
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return extract_utf8_string(iter, data, 32);
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}
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static bool extract_device_password_id(struct wsc_attr_iter *iter, void *data)
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{
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uint16_t v;
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enum wsc_device_password_id *out = data;
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if (wsc_attr_iter_get_length(iter) != 2)
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return false;
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v = l_get_be16(wsc_attr_iter_get_data(iter));
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if (v > 0x0008)
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return false;
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*out = v;
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return true;
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}
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static bool extract_mac_address(struct wsc_attr_iter *iter, void *data)
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{
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if (wsc_attr_iter_get_length(iter) != 6)
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return false;
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memcpy(data, wsc_attr_iter_get_data(iter), 6);
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return true;
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}
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static bool extract_manufacturer(struct wsc_attr_iter *iter, void *data)
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{
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return extract_ascii_string(iter, data, 64);
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}
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static bool extract_message_type(struct wsc_attr_iter *iter, void *data)
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{
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enum wsc_message_type *out = data;
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uint8_t mt;
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if (!extract_uint8(iter, &mt))
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return false;
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/* WSC 2.0.5: Table 42 */
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if (!mt || mt > 0x0f)
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return false;
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*out = mt;
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return true;
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}
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static bool extract_model_name(struct wsc_attr_iter *iter, void *data)
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{
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return extract_ascii_string(iter, data, 32);
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}
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static bool extract_model_number(struct wsc_attr_iter *iter, void *data)
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{
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return extract_ascii_string(iter, data, 32);
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}
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static bool extract_os_version(struct wsc_attr_iter *iter, void *data)
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{
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uint32_t v;
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uint32_t *out = data;
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if (wsc_attr_iter_get_length(iter) != 4)
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return false;
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v = l_get_be32(wsc_attr_iter_get_data(iter));
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/*
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* The OS Version component indicates what operating system is running
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* on the device. It is a four-byte field. The most significant bit is
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* reserved and always set to one.
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*/
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if ((v & 0x80000000) == 0)
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return false;
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*out = v & 0x7fffffff;
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return true;
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}
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static bool extract_public_key(struct wsc_attr_iter *iter, void *data)
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{
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if (wsc_attr_iter_get_length(iter) != 192)
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return false;
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memcpy(data, wsc_attr_iter_get_data(iter), 192);
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return true;
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}
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static bool extract_primary_device_type(struct wsc_attr_iter *iter, void *data)
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{
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struct wsc_primary_device_type *out = data;
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const uint8_t *p;
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uint16_t category;
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if (wsc_attr_iter_get_length(iter) != 8)
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return false;
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p = wsc_attr_iter_get_data(iter);
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category = l_get_be16(p);
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if (category > 12 && category != 255)
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return false;
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out->category = category;
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memcpy(out->oui, p + 2, 3);
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out->oui_type = p[5];
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out->subcategory = l_get_be16(p + 6);
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return true;
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}
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static bool extract_request_type(struct wsc_attr_iter *iter, void *data)
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{
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enum wsc_request_type *out = data;
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uint8_t rt;
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if (!extract_uint8(iter, &rt))
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return false;
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/* WSC 2.0.5: Table 42 */
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if (rt > 3)
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return false;
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*out = rt;
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return true;
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}
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static bool extract_response_type(struct wsc_attr_iter *iter, void *data)
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{
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enum wsc_response_type *out = data;
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uint8_t rt;
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if (!extract_uint8(iter, &rt))
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return false;
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/* WSC 2.0.5: Table 43 */
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if (rt > 3)
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return false;
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*out = rt;
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return true;
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}
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static bool extract_serial_number(struct wsc_attr_iter *iter, void *data)
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{
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return extract_ascii_string(iter, data, 32);
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}
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static bool extract_version(struct wsc_attr_iter *iter, void *data)
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{
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uint8_t *out = data;
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uint8_t v;
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if (!extract_uint8(iter, &v))
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return false;
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/*
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* "This attribute is always set to value 0x10 (version 1.0)
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* for backwards compatibility"
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*/
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if (v != 0x10)
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return false;
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*out = v;
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return true;
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}
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static bool extract_wsc_state(struct wsc_attr_iter *iter, void *data)
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{
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uint8_t *out = data;
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uint8_t st;
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if (!extract_uint8(iter, &st))
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return false;
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if (st < 1 || st > 2)
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return false;
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*out = st;
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return true;
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}
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static attr_handler handler_for_type(enum wsc_attr type)
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{
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switch (type) {
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case WSC_ATTR_AP_SETUP_LOCKED:
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return extract_bool;
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case WSC_ATTR_ASSOCIATION_STATE:
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return extract_association_state;
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case WSC_ATTR_AUTHENTICATION_TYPE_FLAGS:
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return extract_uint16;
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case WSC_ATTR_AUTHENTICATOR:
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return extract_authenticator;
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case WSC_ATTR_CONFIGURATION_ERROR:
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return extract_configuration_error;
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case WSC_ATTR_CONFIGURATION_METHODS:
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return extract_uint16;
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case WSC_ATTR_CONNECTION_TYPE_FLAGS:
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return extract_uint8;
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case WSC_ATTR_DEVICE_NAME:
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return extract_device_name;
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case WSC_ATTR_DEVICE_PASSWORD_ID:
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return extract_device_password_id;
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case WSC_ATTR_ENCRYPTION_TYPE_FLAGS:
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return extract_uint16;
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case WSC_ATTR_ENROLLEE_NONCE:
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return extract_nonce;
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case WSC_ATTR_MAC_ADDRESS:
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return extract_mac_address;
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case WSC_ATTR_MANUFACTURER:
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return extract_manufacturer;
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case WSC_ATTR_MESSAGE_TYPE:
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return extract_message_type;
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case WSC_ATTR_MODEL_NAME:
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return extract_model_name;
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case WSC_ATTR_MODEL_NUMBER:
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return extract_model_number;
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case WSC_ATTR_OS_VERSION:
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return extract_os_version;
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case WSC_ATTR_PUBLIC_KEY:
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return extract_public_key;
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case WSC_ATTR_PRIMARY_DEVICE_TYPE:
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return extract_primary_device_type;
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case WSC_ATTR_RF_BANDS:
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return extract_uint8;
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case WSC_ATTR_REGISTRAR_NONCE:
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return extract_nonce;
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case WSC_ATTR_REQUEST_TYPE:
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return extract_request_type;
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case WSC_ATTR_REQUESTED_DEVICE_TYPE:
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return extract_primary_device_type;
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case WSC_ATTR_RESPONSE_TYPE:
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return extract_response_type;
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case WSC_ATTR_SELECTED_REGISTRAR:
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return extract_bool;
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case WSC_ATTR_SELECTED_REGISTRAR_CONFIGURATION_METHODS:
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return extract_uint16;
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case WSC_ATTR_SERIAL_NUMBER:
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return extract_serial_number;
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case WSC_ATTR_VERSION:
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return extract_version;
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case WSC_ATTR_WSC_STATE:
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return extract_wsc_state;
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case WSC_ATTR_UUID_E:
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return extract_uuid;
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case WSC_ATTR_UUID_R:
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return extract_uuid;
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default:
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break;
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}
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return NULL;
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}
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struct attr_handler_entry {
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enum wsc_attr type;
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unsigned int flags;
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void *data;
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bool present;
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};
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static bool verify_version2(struct wsc_wfa_ext_iter *ext_iter)
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{
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if (!wsc_wfa_ext_iter_next(ext_iter))
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return false;
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if (wsc_wfa_ext_iter_get_type(ext_iter) != WSC_WFA_EXTENSION_VERSION2)
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return false;
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if (wsc_wfa_ext_iter_get_length(ext_iter) != 1)
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return false;
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return true;
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}
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|
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static int wsc_parse_attrs(const unsigned char *pdu, unsigned int len,
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bool *out_version2,
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struct wsc_wfa_ext_iter *ext_iter,
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enum wsc_attr type, ...)
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{
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struct wsc_attr_iter iter;
|
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struct l_queue *entries;
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const struct l_queue_entry *e;
|
|
va_list args;
|
|
bool version2 = false;
|
|
bool sr = false;
|
|
bool have_required = true;
|
|
bool parse_error = false;
|
|
|
|
wsc_attr_iter_init(&iter, pdu, len);
|
|
|
|
va_start(args, type);
|
|
|
|
entries = l_queue_new();
|
|
|
|
while (type != WSC_ATTR_INVALID) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
entry = l_new(struct attr_handler_entry, 1);
|
|
|
|
entry->type = type;
|
|
entry->flags = va_arg(args, unsigned int);
|
|
entry->data = va_arg(args, void *);
|
|
|
|
type = va_arg(args, enum wsc_attr);
|
|
l_queue_push_tail(entries, entry);
|
|
}
|
|
|
|
va_end(args);
|
|
e = l_queue_get_entries(entries);
|
|
|
|
while (wsc_attr_iter_next(&iter)) {
|
|
attr_handler handler;
|
|
struct attr_handler_entry *entry;
|
|
const struct l_queue_entry *e2;
|
|
|
|
for (e2 = e; e2; e2 = e2->next) {
|
|
entry = e2->data;
|
|
|
|
if (wsc_attr_iter_get_type(&iter) == entry->type) {
|
|
entry->present = true;
|
|
break;
|
|
}
|
|
|
|
if (entry->flags & ATTR_FLAG_REQUIRED) {
|
|
have_required = false;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (e2 == NULL) {
|
|
if (wsc_attr_iter_get_type(&iter)
|
|
!= WSC_ATTR_VENDOR_EXTENSION)
|
|
break;
|
|
|
|
if (!wsc_attr_iter_recurse_wfa_ext(&iter, ext_iter))
|
|
break;
|
|
|
|
if (!verify_version2(ext_iter)) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
version2 = true;
|
|
continue;
|
|
}
|
|
|
|
if (entry->type == WSC_ATTR_SELECTED_REGISTRAR)
|
|
sr = true;
|
|
|
|
handler = handler_for_type(entry->type);
|
|
|
|
if (!handler(&iter, entry->data)) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
e = e2->next;
|
|
}
|
|
|
|
for (; e; e = e->next) {
|
|
struct attr_handler_entry *entry = e->data;
|
|
|
|
if (entry->flags & ATTR_FLAG_REQUIRED)
|
|
parse_error = true;
|
|
}
|
|
|
|
/*
|
|
* Check for Version 2.0 required attributes.
|
|
* If version2 attribute is present in the WFA Vendor field,
|
|
* then check the required attributes are present. Mostly relevant
|
|
* for Probe Request messages according to 8.2.4 in WSC 2.0.5
|
|
*/
|
|
if (version2) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
for (e = l_queue_get_entries(entries); e; e = e->next) {
|
|
entry = e->data;
|
|
|
|
if (!(entry->flags & ATTR_FLAG_VERSION2))
|
|
continue;
|
|
|
|
if (entry->present)
|
|
continue;
|
|
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If Selected Registrar is present and true, then certain attributes
|
|
* must also be present.
|
|
*/
|
|
if (sr) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
for (e = l_queue_get_entries(entries); e; e = e->next) {
|
|
entry = e->data;
|
|
|
|
if (!(entry->flags & ATTR_FLAG_REGISTRAR))
|
|
continue;
|
|
|
|
if (entry->present)
|
|
continue;
|
|
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
}
|
|
|
|
done:
|
|
l_queue_destroy(entries, l_free);
|
|
|
|
if (!have_required)
|
|
return -EINVAL;
|
|
if (parse_error)
|
|
return -EBADMSG;
|
|
|
|
*out_version2 = version2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool wfa_extract_bool(struct wsc_wfa_ext_iter *iter, void *data)
|
|
{
|
|
bool *to = data;
|
|
|
|
if (wsc_wfa_ext_iter_get_length(iter) != 1)
|
|
return false;
|
|
|
|
*to = *wsc_wfa_ext_iter_get_data(iter);
|
|
return true;
|
|
}
|
|
|
|
static bool wfa_extract_authorized_macs(struct wsc_wfa_ext_iter *iter,
|
|
void *data)
|
|
{
|
|
uint8_t *to = data;
|
|
unsigned int len = wsc_wfa_ext_iter_get_length(iter);
|
|
unsigned int mod;
|
|
|
|
if (!len || len > 30)
|
|
return false;
|
|
|
|
mod = len % 6;
|
|
if (mod)
|
|
return false;
|
|
|
|
memcpy(to, wsc_wfa_ext_iter_get_data(iter), len);
|
|
return true;
|
|
}
|
|
|
|
static bool wfa_extract_registrar_configuration_methods(
|
|
struct wsc_wfa_ext_iter *iter, void *data)
|
|
{
|
|
uint16_t *to = data;
|
|
|
|
if (wsc_wfa_ext_iter_get_length(iter) != 2)
|
|
return false;
|
|
|
|
*to = l_get_be16(wsc_wfa_ext_iter_get_data(iter));
|
|
return true;
|
|
}
|
|
|
|
#define REQUIRED(attr, out) \
|
|
WSC_ATTR_ ## attr, ATTR_FLAG_REQUIRED, out
|
|
|
|
#define OPTIONAL(attr, out) \
|
|
WSC_ATTR_ ## attr, 0, out
|
|
|
|
#define REGISTRAR(attr, out) \
|
|
WSC_ATTR_ ## attr, ATTR_FLAG_REGISTRAR, out
|
|
|
|
#define VERSION2(attr, out) \
|
|
WSC_ATTR_ ## attr, ATTR_FLAG_VERSION2, out
|
|
|
|
int wsc_parse_beacon(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_beacon *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_beacon));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
OPTIONAL(AP_SETUP_LOCKED, &out->ap_setup_locked),
|
|
OPTIONAL(SELECTED_REGISTRAR, &out->selected_registrar),
|
|
REGISTRAR(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REGISTRAR(SELECTED_REGISTRAR_CONFIGURATION_METHODS,
|
|
&out->selected_reg_config_methods),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
OPTIONAL(RF_BANDS, &out->rf_bands),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_AUTHORIZED_MACS) {
|
|
if (!wfa_extract_authorized_macs(&iter, &out->authorized_macs))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REGISTRAR_CONFIGRATION_METHODS) {
|
|
if (!wfa_extract_registrar_configuration_methods(&iter,
|
|
&out->reg_config_methods))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_probe_response(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_probe_response *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_probe_response));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
OPTIONAL(AP_SETUP_LOCKED, &out->ap_setup_locked),
|
|
OPTIONAL(SELECTED_REGISTRAR, &out->selected_registrar),
|
|
REGISTRAR(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REGISTRAR(SELECTED_REGISTRAR_CONFIGURATION_METHODS,
|
|
&out->selected_reg_config_methods),
|
|
REQUIRED(RESPONSE_TYPE, &out->response_type),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
OPTIONAL(RF_BANDS, &out->rf_bands),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_AUTHORIZED_MACS) {
|
|
if (!wfa_extract_authorized_macs(&iter, &out->authorized_macs))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REGISTRAR_CONFIGRATION_METHODS) {
|
|
if (!wfa_extract_registrar_configuration_methods(&iter,
|
|
&out->reg_config_methods))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_probe_request(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_probe_request *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_probe_request));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(REQUEST_TYPE, &out->request_type),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
VERSION2(MANUFACTURER, &out->manufacturer),
|
|
VERSION2(MODEL_NAME, &out->model_name),
|
|
VERSION2(MODEL_NUMBER, &out->model_number),
|
|
VERSION2(DEVICE_NAME, &out->device_name),
|
|
OPTIONAL(REQUESTED_DEVICE_TYPE, &out->requested_device_type),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REQUEST_TO_ENROLL) {
|
|
if (!wfa_extract_bool(&iter, &out->request_to_enroll))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m1(const uint8_t *pdu, uint32_t len, struct wsc_m1 *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m1));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(MAC_ADDRESS, &out->addr),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(PUBLIC_KEY, &out->public_key),
|
|
REQUIRED(AUTHENTICATION_TYPE_FLAGS, &out->auth_type_flags),
|
|
REQUIRED(ENCRYPTION_TYPE_FLAGS, &out->encryption_type_flags),
|
|
REQUIRED(CONNECTION_TYPE_FLAGS, &out->connection_type_flags),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(OS_VERSION, &out->os_version),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M1)
|
|
return -EBADMSG;
|
|
|
|
/* WSC 2.0.5, Section 8.3.1: "Specific RF band used for this message" */
|
|
if (__builtin_popcount(out->rf_bands) != 1)
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REQUEST_TO_ENROLL) {
|
|
if (!wfa_extract_bool(&iter, &out->request_to_enroll))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m2(const uint8_t *pdu, uint32_t len, struct wsc_m2 *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m1));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(UUID_R, &out->uuid_r),
|
|
REQUIRED(PUBLIC_KEY, &out->public_key),
|
|
REQUIRED(AUTHENTICATION_TYPE_FLAGS, &out->auth_type_flags),
|
|
REQUIRED(ENCRYPTION_TYPE_FLAGS, &out->encryption_type_flags),
|
|
REQUIRED(CONNECTION_TYPE_FLAGS, &out->connection_type_flags),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REQUIRED(OS_VERSION, &out->os_version),
|
|
REQUIRED(AUTHENTICATOR, &out->authenticator),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M2)
|
|
return -EBADMSG;
|
|
|
|
/* WSC 2.0.5, Section 8.3.2: "Specific RF band used for this message" */
|
|
if (__builtin_popcount(out->rf_bands) != 1)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct wsc_attr_builder {
|
|
size_t capacity;
|
|
uint8_t *buf;
|
|
size_t offset;
|
|
uint16_t curlen;
|
|
};
|
|
|
|
static void wsc_attr_builder_grow(struct wsc_attr_builder *builder)
|
|
{
|
|
builder->buf = l_realloc(builder->buf, builder->capacity * 2);
|
|
builder->capacity *= 2;
|
|
}
|
|
|
|
static bool wsc_attr_builder_start_attr(struct wsc_attr_builder *builder,
|
|
enum wsc_attr type)
|
|
{
|
|
uint8_t *bytes;
|
|
|
|
/* TLVs must be length > 0 */
|
|
if (builder->curlen == 0 && builder->offset != 0)
|
|
return false;
|
|
|
|
/* Record previous attribute's length */
|
|
if (builder->curlen > 0) {
|
|
bytes = builder->buf + builder->offset;
|
|
l_put_be16(builder->curlen, bytes + 2);
|
|
builder->offset += 4 + builder->curlen;
|
|
builder->curlen = 0;
|
|
}
|
|
|
|
if (builder->offset + 4 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
bytes = builder->buf + builder->offset;
|
|
l_put_be16(type, bytes);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u8(struct wsc_attr_builder *builder, uint8_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 1 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
builder->buf[builder->offset + 4 + builder->curlen] = v;
|
|
builder->curlen += 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u16(struct wsc_attr_builder *builder,
|
|
uint16_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 2 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
l_put_be16(v, builder->buf + builder->offset + 4 + builder->curlen);
|
|
builder->curlen += 2;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u32(struct wsc_attr_builder *builder,
|
|
uint32_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 4 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
l_put_be32(v, builder->buf + builder->offset + 4 + builder->curlen);
|
|
builder->curlen += 4;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_bytes(struct wsc_attr_builder *builder,
|
|
const void *bytes, size_t size)
|
|
{
|
|
while (builder->offset + 4 + builder->curlen + size >=
|
|
builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen,
|
|
bytes, size);
|
|
builder->curlen += size;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_oui(struct wsc_attr_builder *builder,
|
|
const uint8_t *oui)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 3 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen, oui, 3);
|
|
builder->curlen += 3;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_string(struct wsc_attr_builder *builder,
|
|
const char *string)
|
|
{
|
|
size_t len;
|
|
|
|
len = string ? strlen(string) : 0;
|
|
|
|
if (len == 0) {
|
|
string = " ";
|
|
len = 1;
|
|
}
|
|
|
|
if (builder->offset + 4 + builder->curlen + len >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen,
|
|
string, len);
|
|
builder->curlen += len;
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct wsc_attr_builder *wsc_attr_builder_new(size_t initial_capacity)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
if (initial_capacity == 0)
|
|
return NULL;
|
|
|
|
builder = l_new(struct wsc_attr_builder, 1);
|
|
builder->buf = l_malloc(initial_capacity);
|
|
builder->capacity = initial_capacity;
|
|
|
|
return builder;
|
|
}
|
|
|
|
static uint8_t *wsc_attr_builder_free(struct wsc_attr_builder *builder,
|
|
bool free_contents,
|
|
size_t *out_size)
|
|
{
|
|
uint8_t *ret;
|
|
|
|
if (builder->curlen > 0) {
|
|
uint8_t *bytes = builder->buf + builder->offset;
|
|
l_put_be16(builder->curlen, bytes + 2);
|
|
builder->offset += 4 + builder->curlen;
|
|
builder->curlen = 0;
|
|
}
|
|
|
|
if (free_contents) {
|
|
l_free(builder->buf);
|
|
builder->buf = NULL;
|
|
}
|
|
|
|
ret = builder->buf;
|
|
|
|
if (out_size)
|
|
*out_size = builder->offset;
|
|
|
|
l_free(builder);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void build_association_state(struct wsc_attr_builder *builder,
|
|
enum wsc_association_state state)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ASSOCIATION_STATE);
|
|
wsc_attr_builder_put_u16(builder, state);
|
|
}
|
|
|
|
static void build_authentication_type_flags(struct wsc_attr_builder *builder,
|
|
uint16_t auth_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder,
|
|
WSC_ATTR_AUTHENTICATION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u16(builder, auth_type_flags);
|
|
}
|
|
|
|
static void build_authenticator(struct wsc_attr_builder *builder,
|
|
const uint8_t *authenticator)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_AUTHENTICATOR);
|
|
wsc_attr_builder_put_bytes(builder, authenticator, 8);
|
|
}
|
|
|
|
static void build_configuration_error(struct wsc_attr_builder *builder,
|
|
enum wsc_configuration_error error)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONFIGURATION_ERROR);
|
|
wsc_attr_builder_put_u16(builder, error);
|
|
}
|
|
|
|
static void build_configuration_methods(struct wsc_attr_builder *builder,
|
|
uint16_t config_methods)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONFIGURATION_METHODS);
|
|
wsc_attr_builder_put_u16(builder, config_methods);
|
|
}
|
|
|
|
static void build_connection_type_flags(struct wsc_attr_builder *builder,
|
|
uint8_t connection_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONNECTION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u8(builder, connection_type_flags);
|
|
}
|
|
|
|
static void build_device_name(struct wsc_attr_builder *builder,
|
|
const char *device_name)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_DEVICE_NAME);
|
|
wsc_attr_builder_put_string(builder, device_name);
|
|
}
|
|
|
|
static void build_device_password_id(struct wsc_attr_builder *builder,
|
|
enum wsc_device_password_id id)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_DEVICE_PASSWORD_ID);
|
|
wsc_attr_builder_put_u16(builder, id);
|
|
}
|
|
|
|
static void build_encryption_type_flags(struct wsc_attr_builder *builder,
|
|
uint16_t encryption_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u16(builder, encryption_type_flags);
|
|
}
|
|
|
|
static void build_enrollee_nonce(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENROLLEE_NONCE);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_mac_address(struct wsc_attr_builder *builder,
|
|
const uint8_t *addr)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MAC_ADDRESS);
|
|
wsc_attr_builder_put_bytes(builder, addr, 6);
|
|
}
|
|
|
|
static void build_manufacturer(struct wsc_attr_builder *builder,
|
|
const char *manufacturer)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MANUFACTURER);
|
|
wsc_attr_builder_put_string(builder, manufacturer);
|
|
}
|
|
|
|
static void build_message_type(struct wsc_attr_builder *builder,
|
|
enum wsc_message_type type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MESSAGE_TYPE);
|
|
wsc_attr_builder_put_u8(builder, type);
|
|
}
|
|
|
|
static void build_model_name(struct wsc_attr_builder *builder,
|
|
const char *model_name)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MODEL_NAME);
|
|
wsc_attr_builder_put_string(builder, model_name);
|
|
}
|
|
|
|
static void build_model_number(struct wsc_attr_builder *builder,
|
|
const char *model_number)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MODEL_NUMBER);
|
|
wsc_attr_builder_put_string(builder, model_number);
|
|
}
|
|
|
|
static void build_os_version(struct wsc_attr_builder *builder,
|
|
uint32_t os_version)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_OS_VERSION);
|
|
wsc_attr_builder_put_u32(builder, os_version | 0x80000000);
|
|
}
|
|
|
|
static void build_primary_device_type(struct wsc_attr_builder *builder,
|
|
const struct wsc_primary_device_type *pdt)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_PRIMARY_DEVICE_TYPE);
|
|
wsc_attr_builder_put_u16(builder, pdt->category);
|
|
wsc_attr_builder_put_oui(builder, pdt->oui);
|
|
wsc_attr_builder_put_u8(builder, pdt->oui_type);
|
|
wsc_attr_builder_put_u16(builder, pdt->subcategory);
|
|
}
|
|
|
|
static void build_public_key(struct wsc_attr_builder *builder,
|
|
const uint8_t *public_key)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_PUBLIC_KEY);
|
|
wsc_attr_builder_put_bytes(builder, public_key, 192);
|
|
}
|
|
|
|
static void build_registrar_nonce(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_REGISTRAR_NONCE);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_request_type(struct wsc_attr_builder *builder,
|
|
enum wsc_request_type type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_REQUEST_TYPE);
|
|
wsc_attr_builder_put_u8(builder, type);
|
|
}
|
|
|
|
static void build_rf_bands(struct wsc_attr_builder *builder, uint8_t rf_bands)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_RF_BANDS);
|
|
wsc_attr_builder_put_u8(builder, rf_bands);
|
|
}
|
|
|
|
static void build_serial_number(struct wsc_attr_builder *builder,
|
|
const char *serial_number)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_SERIAL_NUMBER);
|
|
wsc_attr_builder_put_string(builder, serial_number);
|
|
}
|
|
|
|
static void build_uuid_e(struct wsc_attr_builder *builder, const uint8_t *uuid)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_UUID_E);
|
|
wsc_attr_builder_put_bytes(builder, uuid, 16);
|
|
}
|
|
|
|
static void build_uuid_r(struct wsc_attr_builder *builder, const uint8_t *uuid)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_UUID_R);
|
|
wsc_attr_builder_put_bytes(builder, uuid, 16);
|
|
}
|
|
|
|
static void build_version(struct wsc_attr_builder *builder, uint8_t version)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VERSION);
|
|
wsc_attr_builder_put_u8(builder, version);
|
|
}
|
|
|
|
static void build_wsc_state(struct wsc_attr_builder *builder,
|
|
enum wsc_state state)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_WSC_STATE);
|
|
wsc_attr_builder_put_u8(builder, state);
|
|
}
|
|
|
|
uint8_t *wsc_build_probe_request(const struct wsc_probe_request *probe_request,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(512);
|
|
build_version(builder, 0x10);
|
|
build_request_type(builder, probe_request->request_type);
|
|
build_configuration_methods(builder, probe_request->config_methods);
|
|
build_uuid_e(builder, probe_request->uuid_e);
|
|
build_primary_device_type(builder, &probe_request->primary_device_type);
|
|
build_rf_bands(builder, probe_request->rf_bands);
|
|
build_association_state(builder, probe_request->association_state);
|
|
build_configuration_error(builder, probe_request->configuration_error);
|
|
build_device_password_id(builder, probe_request->device_password_id);
|
|
|
|
if (!probe_request->version2)
|
|
goto done;
|
|
|
|
build_manufacturer(builder, probe_request->manufacturer);
|
|
build_model_name(builder, probe_request->model_name);
|
|
build_model_number(builder, probe_request->model_number);
|
|
build_device_name(builder, probe_request->device_name);
|
|
|
|
/* Put in the WFA Vendor Extension */
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VENDOR_EXTENSION);
|
|
wsc_attr_builder_put_oui(builder, wfa_ext);
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_VERSION2);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 0x20);
|
|
|
|
if (!probe_request->request_to_enroll)
|
|
goto done;
|
|
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_REQUEST_TO_ENROLL);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m1(const struct wsc_m1 *m1, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(1024);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M1);
|
|
build_uuid_e(builder, m1->uuid_e);
|
|
build_mac_address(builder, m1->addr);
|
|
build_enrollee_nonce(builder, m1->enrollee_nonce);
|
|
build_public_key(builder, m1->public_key);
|
|
build_authentication_type_flags(builder, m1->auth_type_flags);
|
|
build_encryption_type_flags(builder, m1->encryption_type_flags);
|
|
build_connection_type_flags(builder, m1->connection_type_flags);
|
|
build_configuration_methods(builder, m1->config_methods);
|
|
build_wsc_state(builder, m1->state);
|
|
build_manufacturer(builder, m1->manufacturer);
|
|
build_model_name(builder, m1->model_name);
|
|
build_model_number(builder, m1->model_number);
|
|
build_serial_number(builder, m1->serial_number);
|
|
build_primary_device_type(builder, &m1->primary_device_type);
|
|
build_device_name(builder, m1->device_name);
|
|
build_rf_bands(builder, m1->rf_bands);
|
|
build_association_state(builder, m1->association_state);
|
|
build_device_password_id(builder, m1->device_password_id);
|
|
build_configuration_error(builder, m1->configuration_error);
|
|
build_os_version(builder, m1->os_version);
|
|
|
|
if (!m1->version2)
|
|
goto done;
|
|
|
|
/* Put in the WFA Vendor Extension */
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VENDOR_EXTENSION);
|
|
wsc_attr_builder_put_oui(builder, wfa_ext);
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_VERSION2);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 0x20);
|
|
|
|
if (!m1->request_to_enroll)
|
|
goto done;
|
|
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_REQUEST_TO_ENROLL);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m2(const struct wsc_m2 *m2, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(1024);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M2);
|
|
build_enrollee_nonce(builder, m2->enrollee_nonce);
|
|
build_registrar_nonce(builder, m2->registrar_nonce);
|
|
build_uuid_r(builder, m2->uuid_r);
|
|
build_public_key(builder, m2->public_key);
|
|
build_authentication_type_flags(builder, m2->auth_type_flags);
|
|
build_encryption_type_flags(builder, m2->encryption_type_flags);
|
|
build_connection_type_flags(builder, m2->connection_type_flags);
|
|
build_configuration_methods(builder, m2->config_methods);
|
|
build_manufacturer(builder, m2->manufacturer);
|
|
build_model_name(builder, m2->model_name);
|
|
build_model_number(builder, m2->model_number);
|
|
build_serial_number(builder, m2->serial_number);
|
|
build_primary_device_type(builder, &m2->primary_device_type);
|
|
build_device_name(builder, m2->device_name);
|
|
build_rf_bands(builder, m2->rf_bands);
|
|
build_association_state(builder, m2->association_state);
|
|
build_configuration_error(builder, m2->configuration_error);
|
|
build_device_password_id(builder, m2->device_password_id);
|
|
build_os_version(builder, m2->os_version);
|
|
|
|
if (!m2->version2)
|
|
goto done;
|
|
|
|
/* Put in the WFA Vendor Extension */
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VENDOR_EXTENSION);
|
|
wsc_attr_builder_put_oui(builder, wfa_ext);
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_VERSION2);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 0x20);
|
|
|
|
done:
|
|
build_authenticator(builder, m2->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
|
|
bool wsc_uuid_from_addr(const uint8_t addr[], uint8_t *out_uuid)
|
|
{
|
|
/* Reuse the NSID from WPA Supplicant for compatibility */
|
|
static const uint8_t nsid[] = {
|
|
0x52, 0x64, 0x80, 0xf8, 0xc9, 0x9b, 0x4b, 0xe5,
|
|
0xa6, 0x55, 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84,
|
|
};
|
|
|
|
return l_uuid_v5(nsid, addr, 6, out_uuid);
|
|
}
|