encode.c File Reference

Functions to encode DHCP options. More...

#include <stdint.h>
#include <stddef.h>
#include <freeradius-devel/io/test_point.h>
#include <freeradius-devel/util/dbuff.h>
#include <freeradius-devel/util/dns.h>
#include <freeradius-devel/util/proto.h>
#include <freeradius-devel/util/struct.h>
#include <freeradius-devel/util/encode.h>
#include "dhcpv6.h"
#include "attrs.h"

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Functions
static ssize_t	encode_child (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, void *encode_ctx)
static ssize_t	encode_option_hdr (fr_dbuff_marker_t *m, uint16_t option, size_t data_len)
	Macro-like function for encoding an option header. More...
static ssize_t	encode_relay_message (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, UNUSED void *encode_ctx)
	Encode a Relay-Message. More...
static ssize_t	encode_rfc (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, void *encode_ctx)
	Encode an RFC format TLV. More...
static int	encode_test_ctx (void **out, TALLOC_CTX *ctx)
static ssize_t	encode_tlv (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, void *encode_ctx)
static ssize_t	encode_value (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, void *encode_ctx)
static ssize_t	encode_vsio (fr_dbuff_t *dbuff, fr_da_stack_t *da_stack, unsigned int depth, fr_dcursor_t *cursor, void *encode_ctx)
	Encode a Vendor-Specific Information Option. More...
ssize_t	fr_dhcpv6_encode_foreign (fr_dbuff_t *dbuff, fr_pair_list_t const *list)
ssize_t	fr_dhcpv6_encode_option (fr_dbuff_t *dbuff, fr_dcursor_t *cursor, void *encode_ctx)
	Encode a DHCPv6 option and any sub-options. More...
static ssize_t	fr_dhcpv6_encode_proto (UNUSED TALLOC_CTX *ctx, fr_pair_list_t *vps, uint8_t *data, size_t data_len, UNUSED void *proto_ctx)

Variables
fr_test_point_pair_encode_t	dhcpv6_tp_encode_pair
fr_test_point_proto_encode_t	dhcpv6_tp_encode_proto

Detailed Description

Functions to encode DHCP options.

Id

8a502a4c80fa073f94718e2c32bb71fd9c88663e

Author

Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

Copyright

2018 The freeradius server project

2018 NetworkRADIUS SARL (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Definition in file encode.c.

Function Documentation

encode_child()

static ssize_t encode_child ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, void *  encode_ctx  )

static

Definition at line 373 of file encode.c.

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encode_option_hdr()

static ssize_t encode_option_hdr ( fr_dbuff_marker_t *  m, uint16_t  option, size_t  data_len  )

inlinestatic

Macro-like function for encoding an option header.

0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | option-code | option-len | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Parameters

[out]	m	Where to write the 4 byte option header.
[in]	option	The option number (host byte order).
[in]	data_len	The length of the option (host byte order).

Returns

• <0 How much data would have been required as a negative value.
• 4 The length of data written.

Definition at line 71 of file encode.c.

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encode_relay_message()

static ssize_t encode_relay_message ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, UNUSED void *  encode_ctx  )

static

Encode a Relay-Message.

Header + stuff

Definition at line 615 of file encode.c.

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encode_rfc()

static ssize_t encode_rfc ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, void *  encode_ctx  )

static

Encode an RFC format TLV.

This could be a standard attribute, or a TLV data type. If it's a standard attribute, then vp->da->attr == attribute. Otherwise, attribute may be something else.

Definition at line 446 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 743 of file encode.c.

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encode_tlv()

static ssize_t encode_tlv ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, void *  encode_ctx  )

static

Definition at line 484 of file encode.c.

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encode_value()

static ssize_t encode_value ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, void *  encode_ctx  )

static

Definition at line 80 of file encode.c.

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encode_vsio()

static ssize_t encode_vsio ( fr_dbuff_t *  dbuff, fr_da_stack_t *  da_stack, unsigned int  depth, fr_dcursor_t *  cursor, void *  encode_ctx  )

static

Encode a Vendor-Specific Information Option.

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | OPTION_VENDOR_OPTS | option-len | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | enterprise-number | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ . . . option-data . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Definition at line 540 of file encode.c.

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fr_dhcpv6_encode_foreign()

ssize_t fr_dhcpv6_encode_foreign	(	fr_dbuff_t *	dbuff,
		fr_pair_list_t const *	list
	)

Definition at line 721 of file encode.c.

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fr_dhcpv6_encode_option()

ssize_t fr_dhcpv6_encode_option	(	fr_dbuff_t *	dbuff,
		fr_dcursor_t *	cursor,
		void *	encode_ctx
	)

Encode a DHCPv6 option and any sub-options.

Parameters

[out]	dbuff	Where to write encoded DHCP attributes.
[in]	cursor	with current VP set to the option to be encoded. Will be advanced to the next option to encode.
[in]	encode_ctx	containing parameters for the encoder.

Returns

• > 0 length of data written.
• < 0 error.

Definition at line 670 of file encode.c.

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fr_dhcpv6_encode_proto()

static ssize_t fr_dhcpv6_encode_proto ( UNUSED TALLOC_CTX *  ctx, fr_pair_list_t *  vps, uint8_t *  data, size_t  data_len, UNUSED void *  proto_ctx  )

static

Definition at line 757 of file encode.c.

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Variable Documentation

dhcpv6_tp_encode_pair

fr_test_point_pair_encode_t dhcpv6_tp_encode_pair

Initial value:

= {
        .test_ctx       = encode_test_ctx,
        .func           = fr_dhcpv6_encode_option,
        .next_encodable = fr_dhcpv6_next_encodable,
}

Definition at line 778 of file encode.c.

dhcpv6_tp_encode_proto

fr_test_point_proto_encode_t dhcpv6_tp_encode_proto

Initial value:

= {
        .test_ctx       = encode_test_ctx,
        .func           = fr_dhcpv6_encode_proto
}

Definition at line 785 of file encode.c.