packet.c File Reference

Functions to deal with fr_packet_t data structures. More...

#include "attrs.h"
#include <freeradius-devel/util/udp.h>
#include <freeradius-devel/util/syserror.h>
#include <fcntl.h>

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Data Structures
struct	radius_packet_t

Macros
#define	FR_DEBUG_STRERROR_PRINTF   if (fr_debug_lvl) fr_strerror_printf_push

Functions
void	_fr_packet_log_hex (fr_log_t const *log, fr_packet_t const *packet, char const *file, int line)
ssize_t	fr_packet_encode (fr_packet_t *packet, fr_pair_list_t *list, fr_packet_t const *original, char const *secret)
	Encode a packet.
bool	fr_packet_ok (fr_packet_t *packet, uint32_t max_attributes, bool require_message_authenticator, fr_radius_decode_fail_t *reason)
	See if the data pointed to by PTR is a valid RADIUS packet.
fr_packet_t *	fr_packet_recv (TALLOC_CTX *ctx, int fd, int flags, uint32_t max_attributes, bool require_message_authenticator)
	Receive UDP client requests, and fill in the basics of a fr_packet_t structure.
int	fr_packet_send (fr_packet_t *packet, fr_pair_list_t *list, fr_packet_t const *original, char const *secret)
	Reply to the request.
int	fr_packet_sign (fr_packet_t *packet, fr_packet_t const *original, char const *secret)
	Sign a previously encoded packet.
int	fr_packet_verify (fr_packet_t *packet, fr_packet_t *original, char const *secret)
	Verify the Request/Response Authenticator (and Message-Authenticator if present) of a packet.
void	fr_radius_packet_header_log (fr_log_t const *log, fr_packet_t *packet, bool received)
void	fr_radius_packet_log (fr_log_t const *log, fr_packet_t *packet, fr_pair_list_t *list, bool received)
static ssize_t	rad_recvfrom (int sockfd, fr_packet_t *packet, int flags)
	Wrapper for recvfrom, which handles recvfromto, IPv6, and all possible combinations.

Detailed Description

Functions to deal with fr_packet_t data structures.

TCP-specific functions.

Id

91b1f1b915013f9c3dee8ac29a69a99e4ac655ea

Copyright

2000-2017 The FreeRADIUS server project

Id

c8ca250f513459c54fa7978f6e18c21d3b328173

Copyright

(C) 2009 Dante http://dante.net

Definition in file packet.c.

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Data Structure Documentation

radius_packet_t

struct radius_packet_t

Definition at line 100 of file radsniff.h.

Data Fields
uint8_t	code
uint8_t	data[]
uint8_t	id
uint8_t	length[2]
uint8_t	vector[RADIUS_AUTH_VECTOR_LENGTH]

Macro Definition Documentation

FR_DEBUG_STRERROR_PRINTF

#define FR_DEBUG_STRERROR_PRINTF   if (fr_debug_lvl) fr_strerror_printf_push

Definition at line 46 of file packet.c.

Function Documentation

_fr_packet_log_hex()

void _fr_packet_log_hex	(	fr_log_t const *	log,
		fr_packet_t const *	packet,
		char const *	file,
		int	line
	)

Definition at line 349 of file packet.c.

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fr_packet_encode()

ssize_t fr_packet_encode	(	fr_packet_t *	packet,
		fr_pair_list_t *	list,
		fr_packet_t const *	original,
		char const *	secret
	)

Encode a packet.

Definition at line 52 of file packet.c.

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fr_packet_ok()

bool fr_packet_ok	(	fr_packet_t *	packet,
		uint32_t	max_attributes,
		bool	require_message_authenticator,
		fr_radius_decode_fail_t *	reason
	)

See if the data pointed to by PTR is a valid RADIUS packet.

Packet is not 'const * const' because we may update data_len, if there's more data in the UDP packet than in the RADIUS packet.

Parameters

[in]	packet	to check.
[in]	max_attributes	to decode.
[in]	require_message_authenticator	to require Message-Authenticator.
[out]	reason	if not NULL, will have the failure reason written to where it points.

Returns

• True on success.
• False on failure.

Definition at line 119 of file packet.c.

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fr_packet_recv()

fr_packet_t * fr_packet_recv	(	TALLOC_CTX *	ctx,
		int	fd,
		int	flags,
		uint32_t	max_attributes,
		bool	require_message_authenticator
	)

Receive UDP client requests, and fill in the basics of a fr_packet_t structure.

Definition at line 205 of file packet.c.

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fr_packet_send()

int fr_packet_send	(	fr_packet_t *	packet,
		fr_pair_list_t *	list,
		fr_packet_t const *	original,
		char const *	secret
	)

Reply to the request.

Also attach reply attribute value pairs and any user message provided.

Definition at line 291 of file packet.c.

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fr_packet_sign()

int fr_packet_sign	(	fr_packet_t *	packet,
		fr_packet_t const *	original,
		char const *	secret
	)

Sign a previously encoded packet.

Definition at line 164 of file packet.c.

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fr_packet_verify()

int fr_packet_verify	(	fr_packet_t *	packet,
		fr_packet_t *	original,
		char const *	secret
	)

Verify the Request/Response Authenticator (and Message-Authenticator if present) of a packet.

Definition at line 143 of file packet.c.

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fr_radius_packet_header_log()

void fr_radius_packet_header_log	(	fr_log_t const *	log,
		fr_packet_t *	packet,
		bool	received
	)

Definition at line 420 of file packet.c.

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fr_radius_packet_log()

void fr_radius_packet_log	(	fr_log_t const *	log,
		fr_packet_t *	packet,
		fr_pair_list_t *	list,
		bool	received
	)

Definition at line 491 of file packet.c.

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rad_recvfrom()

static ssize_t rad_recvfrom ( int  sockfd, fr_packet_t *  packet, int  flags  )

static

Wrapper for recvfrom, which handles recvfromto, IPv6, and all possible combinations.

Definition at line 181 of file packet.c.

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