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iwd
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p2putil: Add P2P-related declarations and iterator 

Add enums defining the values from the spec that we're going to be using
and add an iterator for P2P payload attributes similar to wsc_attr_iter.
This commit is contained in:
Andrew Zaborowski 2019-07-08 18:59:37 +02:00 committed by Denis Kenzior
parent 79dd14cb24
commit 614fc0261f
3 changed files with 207 additions and 1 deletions
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5
Makefile.am
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@ -211,6 +211,8 @@ src_iwd_SOURCES = src/main.c linux/nl80211.h src/iwd.h src/missing.h \
src/hotspot.h src/hotspot.c \
$(eap_sources) \
$(builtin_sources)
src/p2putil.h src/p2putil.c
src_iwd_LDADD = $(ell_ldadd) -ldl
src_iwd_DEPENDENCIES = $(ell_dependencies)
@ -270,7 +272,8 @@ monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \
src/crypto.h src/crypto.c \
src/watchlist.h src/watchlist.c \
src/eapolutil.h src/eapolutil.c \
src/handshake.h src/handshake.c
src/handshake.h src/handshake.c \
src/p2putil.c src/p2putil.h
monitor_iwmon_LDADD = $(ell_ldadd)
endif

54
src/p2putil.c Normal file
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@ -0,0 +1,54 @@
/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdbool.h>
#include <ell/ell.h>
#include "src/p2putil.h"
void p2p_attr_iter_init(struct p2p_attr_iter *iter, const uint8_t *pdu,
size_t len)
{
iter->pos = pdu;
iter->end = pdu + len;
iter->type = -1;
}
bool p2p_attr_iter_next(struct p2p_attr_iter *iter)
{
if (iter->type != (enum p2p_attr) -1)
iter->pos += 3 + iter->len;
if (iter->pos + 3 > iter->end ||
iter->pos + 3 + l_get_le16(iter->pos + 1) > iter->end)
return false;
iter->type = iter->pos[0];
iter->len = l_get_le16(iter->pos + 1);
return true;
}

149
src/p2putil.h Normal file
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@ -0,0 +1,149 @@
/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <stdint.h>
/* Wi-Fi P2P Technical Specification v1.7, Section 4.1.1, Table 6 */
enum p2p_attr {
P2P_ATTR_STATUS = 0,
P2P_ATTR_MINOR_REASON_CODE = 1,
P2P_ATTR_P2P_CAPABILITY = 2,
P2P_ATTR_P2P_DEVICE_ID = 3,
P2P_ATTR_GO_INTENT = 4,
P2P_ATTR_CONFIGURATION_TIMEOUT = 5,
P2P_ATTR_LISTEN_CHANNEL = 6,
P2P_ATTR_P2P_GROUP_BSSID = 7,
P2P_ATTR_EXTENDED_LISTEN_TIMING = 8,
P2P_ATTR_INTENDED_P2P_INTERFACE_ADDR = 9,
P2P_ATTR_P2P_MANAGEABILITY = 10,
P2P_ATTR_CHANNEL_LIST = 11,
P2P_ATTR_NOTICE_OF_ABSENCE = 12,
P2P_ATTR_P2P_DEVICE_INFO = 13,
P2P_ATTR_P2P_GROUP_INFO = 14,
P2P_ATTR_P2P_GROUP_ID = 15,
P2P_ATTR_P2P_INTERFACE = 16,
P2P_ATTR_OPERATING_CHANNEL = 17,
P2P_ATTR_INVITATION_FLAGS = 18,
P2P_ATTR_OOB_GO_NEGOTIATION_CHANNEL = 19,
P2P_ATTR_SVC_HASH = 21,
P2P_ATTR_SESSION_INFO_DATA_INFO = 22,
P2P_ATTR_CONNECTION_CAPABILITY_INFO = 23,
P2P_ATTR_ADVERTISEMENT_ID_INFO = 24,
P2P_ATTR_ADVERTISED_SVC_INFO = 25,
P2P_ATTR_SESSION_ID_INFO = 26,
P2P_ATTR_FEATURE_CAPABILITY = 27,
P2P_ATTR_PERSISTENT_GROUP_INFO = 28,
P2P_ATTR_VENDOR_SPECIFIC_ATTR = 221,
};
/* Table 8 */
enum p2p_attr_status_code {
P2P_STATUS_SUCCESS = 0,
P2P_STATUS_FAIL_INFO_NOT_AVAIL = 1,
P2P_STATUS_FAIL_INCOMPATIBLE_PARAMS = 2,
P2P_STATUS_FAIL_LIMIT_REACHED = 3,
P2P_STATUS_FAIL_INVALID_PARAMS = 4,
P2P_STATUS_FAIL_UNABLE_TO_ACCOMMODATE_REQUEST = 5,
P2P_STATUS_FAIL_PREV_PROTOCOL_ERROR = 6,
P2P_STATUS_FAIL_NO_COMMON_CHANNELS = 7,
P2P_STATUS_FAIL_UNKNOWN_P2P_GROUP = 8,
P2P_STATUS_FAIL_INTENT_15_IN_GO_NEGOTIATION = 9,
P2P_STATUS_FAIL_INCOMPATIBLE_PROVISIONING = 10,
P2P_STATUS_FAIL_REJECTED_BY_USER = 11,
P2P_STATUS_SUCCESS_ACCEPTED_BY_USER = 12,
};
/* Table 12 */
enum p2p_device_capability_bitmap {
P2P_DEVICE_CAP_SVC_DISCOVERY = 0x01,
P2P_DEVICE_CAP_CLIENT_DISCOVERABILITY = 0x02,
P2P_DEVICE_CAP_CONCURRENT_OP = 0x04,
P2P_DEVICE_CAP_INFRASTRUCTURE_MANAGED = 0x08,
P2P_DEVICE_CAP_DEVICE_LIMIT = 0x10,
P2P_DEVICE_CAP_INVITATION_PROCEDURE = 0x20,
};
/* Table 13 */
enum p2p_group_capability_bitmap {
P2P_GROUP_CAP_GO = 0x01,
P2P_GROUP_CAP_PERSISTENT_GROUP = 0x02,
P2P_GROUP_CAP_GROUP_LIMIT = 0x04,
P2P_GROUP_CAP_INTRA_BSS_DISTRIBUTION = 0x08,
P2P_GROUP_CAP_CROSS_CONNECT = 0x10,
P2P_GROUP_CAP_PERSISTENT_RECONNECT = 0x20,
P2P_GROUP_CAP_GROUP_FORMATION = 0x40,
P2P_GROUP_CAP_IP_ALLOCATION = 0x80,
};
/* Table 23 */
enum p2p_manageability_bitmap {
P2P_MANAGEABILITY_DEVICE_MGMT = 0x01,
P2P_MANAGEABILITY_CROSS_CONNECT = 0x02,
P2P_MANAGEABILITY_COEXIST_OPTIONAL = 0x04,
};
/* Table 61 */
enum p2p_public_action_frame_type {
P2P_ACTION_GO_NEGOTIATION_REQ = 0,
P2P_ACTION_GO_NEGOTIATION_RESP = 1,
P2P_ACTION_GO_NEGOTIATION_CONFIRM = 2,
P2P_ACTION_INVITATION_REQ = 3,
P2P_ACTION_INVITATION_RESP = 4,
P2P_ACTION_DEVICE_DISCOVERABILITY_REQ = 5,
P2P_ACTION_DEVICE_DISCOVERABILITY_RESP = 6,
P2P_ACTION_PROVISION_DISCOVERY_REQ = 7,
P2P_ACTION_PROVISION_DISCOVERY_RESP = 8,
};
/* Table 75 */
enum p2p_action_frame_type {
P2P_ACTION_NOTICE_OF_ABSENCE = 0,
P2P_ACTION_PRESENCE_REQ = 1,
P2P_ACTION_PRESENCE_RESP = 2,
P2P_ACTION_GO_DISCOVERABILITY_REQ = 3,
};
struct p2p_attr_iter {
const uint8_t *pos;
const uint8_t *end;
enum p2p_attr type;
size_t len;
};
void p2p_attr_iter_init(struct p2p_attr_iter *iter, const uint8_t *pdu,
size_t len);
bool p2p_attr_iter_next(struct p2p_attr_iter *iter);
static inline enum p2p_attr p2p_attr_iter_get_type(struct p2p_attr_iter *iter)
{
return iter->type;
}
static inline size_t p2p_attr_iter_get_length(struct p2p_attr_iter *iter)
{
return iter->len;
}
static inline const uint8_t *p2p_attr_iter_get_data(struct p2p_attr_iter *iter)
{
return iter->pos + 3;
}