encode.c File Reference

Low-Level TACACS+ encode functions. More...

#include <freeradius-devel/io/test_point.h>
#include <freeradius-devel/protocol/tacacs/tacacs.h>
#include <freeradius-devel/util/dbuff.h>
#include <freeradius-devel/util/rand.h>
#include <freeradius-devel/util/struct.h>
#include "tacacs.h"
#include "attrs.h"

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Macros
#define	ENCODE_FIELD_STRING16(_field, _da)   _field = htons(tacacs_encode_field(&work_dbuff, vps, _da, 0xffff))
#define	ENCODE_FIELD_STRING8(_field, _da)   _field = tacacs_encode_field(&work_dbuff, vps, _da, 0xff)
#define	ENCODE_FIELD_UINT8(_field, _da)

Functions
static int	_encode_test_ctx (fr_tacacs_ctx_t *proto_ctx)
static int	encode_test_ctx (void **out, TALLOC_CTX *ctx)
int	fr_tacacs_code_to_packet (fr_tacacs_packet_t *pkt, uint32_t code)
ssize_t	fr_tacacs_encode (fr_dbuff_t *dbuff, uint8_t const *original_packet, char const *secret, size_t secret_len, unsigned int code, fr_pair_list_t *vps)
	Encode VPS into a raw TACACS packet. More...
static ssize_t	fr_tacacs_encode_proto (UNUSED TALLOC_CTX *ctx, fr_pair_list_t *vps, uint8_t *data, size_t data_len, void *proto_ctx)
static uint8_t	tacacs_encode_body_arg_cnt (fr_pair_list_t *vps, fr_dict_attr_t const *da)
	Encode a TACACS+ 'arg_N' fields. More...
static ssize_t	tacacs_encode_body_arg_n (fr_dbuff_t *dbuff, uint8_t arg_cnt, uint8_t *arg_len, fr_pair_list_t *vps, fr_dict_attr_t const *da)
static ssize_t	tacacs_encode_chap (fr_dbuff_t *dbuff, fr_tacacs_packet_t *packet, fr_pair_list_t *vps, fr_dict_attr_t const *da_chap, fr_dict_attr_t const *da_challenge)
static ssize_t	tacacs_encode_field (fr_dbuff_t *dbuff, fr_pair_list_t *vps, fr_dict_attr_t const *da, size_t max_len)

Variables
fr_test_point_proto_encode_t	tacacs_tp_encode_proto

Detailed Description

Low-Level TACACS+ encode functions.

Id

7b7974ebc5b0a3961e4638d6abdc0ee3f896a955

Copyright

2017 The FreeRADIUS server project

2017 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Id

9cde8cf54fa82c01b2a234820daf100db7a7e35c

Copyright

2017 The FreeRADIUS server project

2017 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Definition in file encode.c.

Macro Definition Documentation

ENCODE_FIELD_STRING16

#define ENCODE_FIELD_STRING16	(		_field,
			_da
	)		_field = htons(tacacs_encode_field(&work_dbuff, vps, _da, 0xffff))

Definition at line 358 of file encode.c.

ENCODE_FIELD_STRING8

#define ENCODE_FIELD_STRING8	(		_field,
			_da
	)		_field = tacacs_encode_field(&work_dbuff, vps, _da, 0xff)

Definition at line 357 of file encode.c.

ENCODE_FIELD_UINT8

#define ENCODE_FIELD_UINT8	(		_field,
			_da
	)

Value:

        do { \
        vp = fr_pair_find_by_da(vps, NULL, _da); \
        _field = (vp) ? vp->vp_uint8 : 0; \
} while (0)

Definition at line 352 of file encode.c.

Function Documentation

_encode_test_ctx()

static int _encode_test_ctx ( fr_tacacs_ctx_t *  proto_ctx )

static

Definition at line 1051 of file encode.c.

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encode_test_ctx()

static int encode_test_ctx ( void **  out, TALLOC_CTX *  ctx  )

static

Definition at line 1060 of file encode.c.

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fr_tacacs_code_to_packet()

int fr_tacacs_code_to_packet	(	fr_tacacs_packet_t *	pkt,
		uint32_t	code
	)

Definition at line 36 of file encode.c.

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fr_tacacs_encode()

ssize_t fr_tacacs_encode	(	fr_dbuff_t *	dbuff,
		uint8_t const *	original_packet,
		char const *	secret,
		size_t	secret_len,
		unsigned int	code,
		fr_pair_list_t *	vps
	)

Encode VPS into a raw TACACS packet.

4.1. The Authentication START Packet Body

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 +-------------—+-------------—+-------------—+-------------—+ | action | priv_lvl | authen_type | authen_service | +-------------—+-------------—+-------------—+-------------—+ | user_len | port_len | rem_addr_len | data_len | +-------------—+-------------—+-------------—+-------------—+ | user ... +-------------—+-------------—+-------------—+-------------—+ | port ... +-------------—+-------------—+-------------—+-------------—+ | rem_addr ... +-------------—+-------------—+-------------—+-------------—+ | data... +-------------—+-------------—+-------------—+-------------—+

6.1. The Account REQUEST Packet Body

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 +-------------—+-------------—+-------------—+-------------—+ | flags | authen_method | priv_lvl | authen_type | +-------------—+-------------—+-------------—+-------------—+ | authen_service | user_len | port_len | rem_addr_len | +-------------—+-------------—+-------------—+-------------—+ | arg_cnt | arg_1_len | arg_2_len | ... | +-------------—+-------------—+-------------—+-------------—+ | arg_N_len | user ... +-------------—+-------------—+-------------—+-------------—+ | port ... +-------------—+-------------—+-------------—+-------------—+ | rem_addr ... +-------------—+-------------—+-------------—+-------------—+ | arg_1 ... +-------------—+-------------—+-------------—+-------------—+ | arg_2 ... +-------------—+-------------—+-------------—+-------------—+ | ... +-------------—+-------------—+-------------—+-------------—+ | arg_N ... +-------------—+-------------—+-------------—+-------------—+

6.2. The Accounting REPLY Packet Body

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 +-------------—+-------------—+-------------—+-------------—+ | server_msg len | data_len | +-------------—+-------------—+-------------—+-------------—+ | status | server_msg ... +-------------—+-------------—+-------------—+-------------—+ | data ... +-------------—+

Definition at line 363 of file encode.c.

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fr_tacacs_encode_proto()

static ssize_t fr_tacacs_encode_proto ( UNUSED TALLOC_CTX *  ctx, fr_pair_list_t *  vps, uint8_t *  data, size_t  data_len, void *  proto_ctx  )

static

Definition at line 1043 of file encode.c.

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tacacs_encode_body_arg_cnt()

static uint8_t tacacs_encode_body_arg_cnt ( fr_pair_list_t *  vps, fr_dict_attr_t const *  da  )

static

Encode a TACACS+ 'arg_N' fields.

Definition at line 133 of file encode.c.

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tacacs_encode_body_arg_n()

static ssize_t tacacs_encode_body_arg_n ( fr_dbuff_t *  dbuff, uint8_t  arg_cnt, uint8_t *  arg_len, fr_pair_list_t *  vps, fr_dict_attr_t const *  da  )

static

Definition at line 182 of file encode.c.

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tacacs_encode_chap()

static ssize_t tacacs_encode_chap ( fr_dbuff_t *  dbuff, fr_tacacs_packet_t *  packet, fr_pair_list_t *  vps, fr_dict_attr_t const *  da_chap, fr_dict_attr_t const *  da_challenge  )

static

Definition at line 310 of file encode.c.

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tacacs_encode_field()

static ssize_t tacacs_encode_field ( fr_dbuff_t *  dbuff, fr_pair_list_t *  vps, fr_dict_attr_t const *  da, size_t  max_len  )

static

Definition at line 291 of file encode.c.

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Variable Documentation

tacacs_tp_encode_proto

fr_test_point_proto_encode_t tacacs_tp_encode_proto

Initial value:

= {
        .test_ctx       = encode_test_ctx,
        .func           = fr_tacacs_encode_proto
}

Definition at line 1081 of file encode.c.