packet.c File Reference

Encoding and decoding packets. More...

#include <networkradius-devel/client.h>

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Macros
#define	_allow(_x)   (((uint64_t) 1) << _x)
#define	append_ma(_x)   (0)

Functions
int	nr_packet_ok_raw (const uint8_t *data, size_t sizeof_data)
int	nr_packet_ok (RADIUS_PACKET *packet)
int	nr_packet_verify (RADIUS_PACKET *packet, const RADIUS_PACKET *original)
int	nr_packet_decode (RADIUS_PACKET *packet, const RADIUS_PACKET *original)
int	nr_packet_sign (RADIUS_PACKET *packet, const RADIUS_PACKET *original)
int	nr_packet_can_encode (RADIUS_PACKET *packet, const RADIUS_PACKET *original)
ssize_t	nr_packet_encode (RADIUS_PACKET *packet, const RADIUS_PACKET *original)
int	nr_packet_walk (RADIUS_PACKET *packet, void *ctx, nr_packet_walk_func_t callback)
int	nr_packet_init (RADIUS_PACKET *packet, const RADIUS_PACKET *original, const char *secret, int code, void *data, size_t sizeof_data)
ssize_t	nr_packet_attr_append (RADIUS_PACKET *packet, const RADIUS_PACKET *original, const DICT_ATTR *da, const void *data, size_t data_len)
ssize_t	nr_packet_vps_append (RADIUS_PACKET *packet, const RADIUS_PACKET *original, const VALUE_PAIR *vps)
int	nr_packet_response_ok (RADIUS_PACKET const *packet, RADIUS_PACKET const *response)

Variables
const char *	nr_packet_codes [NR_MAX_PACKET_CODE+1]

Detailed Description

Encoding and decoding packets.

Macro Definition Documentation

#define _allow

(

_x

)

(((uint64_t) 1) << _x)

#define append_ma

(

_x

)

(0)

Referenced by nr_packet_encode().

Function Documentation

ssize_t nr_packet_attr_append	(	RADIUS_PACKET *	packet,
		const RADIUS_PACKET *	original,
		const DICT_ATTR *	da,
		const void *	data,
		size_t	data_len
	)

Add one attribute to the packet.

This function can be used to add "raw" data to a packet. It allows the caller to extend the RADIUS packet without using a VALUE_PAIR data structure.

Some attributes are handled specially by this function.

EAP-Message. This attribute is automatically split into 253-octet chunks.

User-Password, CHAP-Password, and Message-Authenticator. These attributes are automatically encrypted, as is done by nr_packet_encode().

Parameters

[in]	packet	The packet to edit
[in]	original	The original request (if any)
[in]	da	Pointer to the attribute definition
[in]	data	Data to append to the packet
[in]	data_len	Length of data to append to the packet

Returns

<0 for error, >= 0 for "successfully appended data" The function returns the number of octets appended to the packet.

References nr_dict_attr::attr, radius_packet::data, nr_dict_attr::flags, radius_packet::flags, attr_flags::length, radius_packet::length, NR_PACKET_ENCODED, NR_TYPE_STRING, nr_vp2attr(), nr_vp_init(), nr_vp_set_data(), PW_EAP_MESSAGE, return_NR_ERR, radius_packet::sizeof_data, nr_dict_attr::type, and nr_dict_attr::vendor.

Referenced by main().

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int nr_packet_init	(	RADIUS_PACKET *	packet,
		const RADIUS_PACKET *	original,
		const char *	secret,
		int	code,
		void *	data,
		size_t	sizeof_data
	)

Initialize a packet

If original is specified, the packet is initialized as a response to the original request.

Parameters

[in,out]	packet	The packet to initialize
[in]	original	The original request (if any) to use as a template
[in]	secret	Shared secret
[in]	code	RADIUS Code field.
[in]	data	Buffer where packets will be stored (RADIUS_PACKET::data)
[in]	sizeof_data	Size of buffer (RADIUS_PACKET::sizeof_data)

Returns

<0 on error, 0 for success.

References radius_packet::code, radius_packet::data, radius_packet::id, radius_packet::length, NR_MAX_PACKET_CODE, nr_packet_can_encode(), return_NR_ERR, radius_packet::secret, radius_packet::sizeof_data, and radius_packet::sizeof_secret.

Referenced by main(), and nr_track_id_packet_alloc().

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ssize_t nr_packet_vps_append	(	RADIUS_PACKET *	packet,
		const RADIUS_PACKET *	original,
		const VALUE_PAIR *	vps
	)

Add many VALUE_PAIR structures to a packet

Some attributes are handled specially by this function.

User-Password, CHAP-Password, and Message-Authenticator. These attributes are automatically encrypted, as is done by nr_packet_encode().

Parameters

[in]	packet	The packet to edit
[in]	original	The original request (if any)
[in]	vps	The VALUE_PAIR list to append to the packet

Returns

<0 for error, >= 0 for "successfully appended data" The function returns the number of octets appended to the packet.

References radius_packet::data, radius_packet::flags, radius_packet::length, NR_PACKET_ENCODED, nr_vp2attr(), return_NR_ERR, and radius_packet::sizeof_data.

Referenced by nr_packet_encode().

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