p2p_parse.c File Reference

P2P - IE parser. More...

#include "includes.h"
#include "common.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "wps/wps_i.h"
#include "p2p_i.h"

Functions
int	p2p_parse_p2p_ie (const struct wpabuf *buf, struct p2p_message *msg)
	Parse P2P IE. More...
int	p2p_parse_ies (const u8 *data, size_t len, struct p2p_message *msg)
	Parse P2P message IEs (both WPS and P2P IE) More...
int	p2p_parse (const u8 *data, size_t len, struct p2p_message *msg)
	Parse a P2P Action frame contents. More...
int	p2p_parse_ies_separate (const u8 *wsc, size_t wsc_len, const u8 *p2p, size_t p2p_len, struct p2p_message *msg)
void	p2p_parse_free (struct p2p_message *msg)
	Free temporary data from P2P parsing. More...
int	p2p_group_info_parse (const u8 *gi, size_t gi_len, struct p2p_group_info *info)
int	p2p_attr_text (struct wpabuf *data, char *buf, char *end)
	Build text format description of P2P IE attributes. More...
int	p2p_get_cross_connect_disallowed (const struct wpabuf *p2p_ie)
	Does WLAN AP disallows cross connection. More...
u8	p2p_get_group_capab (const struct wpabuf *p2p_ie)
	Get Group Capability from P2P IE data. More...
const u8 *	p2p_get_go_dev_addr (const struct wpabuf *p2p_ie)
	Get P2P Device Address from P2P IE data. More...

Detailed Description

P2P - IE parser.

Function Documentation

int p2p_attr_text	(	struct wpabuf *	data,
		char *	buf,
		char *	end
	)

Build text format description of P2P IE attributes.

Parameters

data	P2P IE contents
buf	Buffer for returning text
end	Pointer to the end of the buf area

Returns

Number of octets written to the buffer or -1 on faikure

This function can be used to parse P2P IE contents into text format field=value lines.

int p2p_get_cross_connect_disallowed

(

const struct wpabuf *

p2p_ie

)

Does WLAN AP disallows cross connection.

Parameters

p2p_ie

P2P IE(s) contents

Returns

0 if cross connection is allow, 1 if not

const u8* p2p_get_go_dev_addr

(

const struct wpabuf *

p2p_ie

)

Get P2P Device Address from P2P IE data.

Parameters

p2p_ie

P2P IE(s) contents

Returns

Pointer to P2P Device Address or NULL if not included

u8 p2p_get_group_capab

(

const struct wpabuf *

p2p_ie

)

Get Group Capability from P2P IE data.

Parameters

p2p_ie

P2P IE(s) contents

Returns

Group Capability

int p2p_parse	(	const u8 *	data,
		size_t	len,
		struct p2p_message *	msg
	)

Parse a P2P Action frame contents.

Parameters

data	Action frame payload after Category and Code fields
len	Length of data buffer in octets
msg	Buffer for returning parsed attributes

Returns

0 on success, -1 on failure

Note: Caller must free temporary memory allocations by calling p2p_parse_free() when the parsed data is not needed anymore.

void p2p_parse_free

(

struct p2p_message *

msg

)

Free temporary data from P2P parsing.

Parameters

msg	Parsed attributes

int p2p_parse_ies	(	const u8 *	data,
		size_t	len,
		struct p2p_message *	msg
	)

Parse P2P message IEs (both WPS and P2P IE)

Parameters

data	IEs from the message
len	Length of data buffer in octets
msg	Buffer for returning parsed attributes

Returns

0 on success, -1 on failure

Note: Caller is responsible for clearing the msg data structure before calling this function.

Note: Caller must free temporary memory allocations by calling p2p_parse_free() when the parsed data is not needed anymore.

int p2p_parse_p2p_ie	(	const struct wpabuf *	buf,
		struct p2p_message *	msg
	)

Parse P2P IE.

Parameters

buf	Concatenated P2P IE(s) payload
msg	Buffer for returning parsed attributes

Returns

0 on success, -1 on failure

Note: Caller is responsible for clearing the msg data structure before calling this function.