Tests for DNS label encoding / decoding. More...

#include "acutest.h"
#include "acutest_helpers.h"
#include <freeradius-devel/util/value.h>
#include <freeradius-devel/util/dns.h>

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Macros
#define	DNS_HDR_LEN 12

Functions
static ssize_t	encode_label (uint8_t buf, size_t buf_len, uint8_t where, char const str, bool compression, fr_dns_labels_t lb)

static void	labels_init (fr_dns_labels_t lb, uint8_t const packet, size_t packet_len, bool use_mark)

static void	test_compress_62_byte_label (void)

static void	test_compress_63_byte_label (void)

static void	test_compress_middle_62_byte_label (void)

static void	test_compress_middle_63_byte_label (void)

static void	test_compress_two_names (void)

static void	test_decode_compressed_pointer (void)

static void	test_decode_forward_pointer_rejected (void)

static void	test_decode_invalid_high_bits (void)

static void	test_decode_label_invalid_chars (void)

static void	test_decode_label_overflow (void)

static void	test_decode_multi_label (void)

static void	test_decode_null_inputs (void)

static void	test_decode_pointer_to_pointer_rejected (void)

static void	test_decode_root_label (void)

static void	test_decode_self_pointer_rejected (void)

static void	test_decode_simple_label (void)

static void	test_decode_to_value_box_label_outside_buf (void)

static void	test_decode_to_value_box_zero_len (void)

static void	test_decode_total_length_exceeds_255 (void)

static void	test_encode_buffer_too_small (void)

static void	test_encode_double_dot (void)

static void	test_encode_empty_string (void)

static void	test_encode_hyphen_and_digits (void)

static void	test_encode_invalid_chars (void)

static void	test_encode_label_too_long (void)

static void	test_encode_leading_dot (void)

static void	test_encode_max_label_length (void)

static void	test_encode_multi_label (void)

static void	test_encode_non_string_type (void)

static void	test_encode_null_inputs (void)

static void	test_encode_root_dot (void)

static void	test_encode_simple_label (void)

static void	test_encode_trailing_dot (void)

static void	test_encode_underscore_prefix (void)

static void	test_encode_where_outside_buf (void)

static void	test_labels_block_tracking (void)

static void	test_pointer_invalid_with_mark_tracking (void)

static void	test_pointer_to_zero_label_rejected (void)

static void	test_pointer_valid_no_tracking (void)

static void	test_roundtrip_case_preservation (void)

static void	test_roundtrip_compressed (void)

static void	test_roundtrip_root (void)

static void	test_roundtrip_simple (void)

static void	test_roundtrip_trailing_dot (void)

static void	test_roundtrip_underscore (void)

static void	test_verify_empty (void)

static void	test_verify_simple (void)

Variables
static fr_dns_block_t	test_blocks [256]

	TEST_LIST

static uint8_t	test_marker [65536]

Detailed Description

Tests for DNS label encoding / decoding.

Copyright: 2026 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Definition in file dns_tests.c.

Macro Definition Documentation

◆ DNS_HDR_LEN

#define DNS_HDR_LEN 12

Definition at line 29 of file dns_tests.c.

Function Documentation

◆ encode_label()

static ssize_t encode_label	(	uint8_t *	buf,
		size_t	buf_len,
		uint8_t *	where,
		char const *	str,
		bool	compression,
		fr_dns_labels_t *	lb
	)

static

Definition at line 60 of file dns_tests.c.

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◆ labels_init()

static void labels_init	(	fr_dns_labels_t *	lb,
		uint8_t const *	packet,
		size_t	packet_len,
		bool	use_mark
	)

static

Definition at line 37 of file dns_tests.c.

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◆ test_compress_62_byte_label()

static void test_compress_62_byte_label ( void )

static

Definition at line 825 of file dns_tests.c.

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◆ test_compress_63_byte_label()

static void test_compress_63_byte_label ( void )

static

Definition at line 869 of file dns_tests.c.

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◆ test_compress_middle_62_byte_label()

static void test_compress_middle_62_byte_label ( void )

static

Definition at line 919 of file dns_tests.c.

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◆ test_compress_middle_63_byte_label()

static void test_compress_middle_63_byte_label ( void )

static

Definition at line 947 of file dns_tests.c.

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◆ test_compress_two_names()

static void test_compress_two_names ( void )

static

Definition at line 621 of file dns_tests.c.

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◆ test_decode_compressed_pointer()

static void test_decode_compressed_pointer ( void )

static

Definition at line 314 of file dns_tests.c.

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◆ test_decode_forward_pointer_rejected()

static void test_decode_forward_pointer_rejected ( void )

static

Definition at line 336 of file dns_tests.c.

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◆ test_decode_invalid_high_bits()

static void test_decode_invalid_high_bits ( void )

static

Definition at line 384 of file dns_tests.c.

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◆ test_decode_label_invalid_chars()

static void test_decode_label_invalid_chars ( void )

static

Definition at line 440 of file dns_tests.c.

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◆ test_decode_label_overflow()

static void test_decode_label_overflow ( void )

static

Definition at line 399 of file dns_tests.c.

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◆ test_decode_multi_label()

static void test_decode_multi_label ( void )

static

Definition at line 280 of file dns_tests.c.

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◆ test_decode_null_inputs()

static void test_decode_null_inputs ( void )

static

Definition at line 415 of file dns_tests.c.

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◆ test_decode_pointer_to_pointer_rejected()

static void test_decode_pointer_to_pointer_rejected ( void )

static

Definition at line 367 of file dns_tests.c.

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◆ test_decode_root_label()

static void test_decode_root_label ( void )

static

Definition at line 299 of file dns_tests.c.

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◆ test_decode_self_pointer_rejected()

static void test_decode_self_pointer_rejected ( void )

static

Definition at line 352 of file dns_tests.c.

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◆ test_decode_simple_label()

static void test_decode_simple_label ( void )

static

Definition at line 262 of file dns_tests.c.

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◆ test_decode_to_value_box_label_outside_buf()

static void test_decode_to_value_box_label_outside_buf ( void )

static

Definition at line 659 of file dns_tests.c.

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◆ test_decode_to_value_box_zero_len()

static void test_decode_to_value_box_zero_len ( void )

static

Definition at line 649 of file dns_tests.c.

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◆ test_decode_total_length_exceeds_255()

static void test_decode_total_length_exceeds_255 ( void )

static

Definition at line 455 of file dns_tests.c.

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◆ test_encode_buffer_too_small()

static void test_encode_buffer_too_small ( void )

static

Definition at line 234 of file dns_tests.c.

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◆ test_encode_double_dot()

static void test_encode_double_dot ( void )

static

Definition at line 203 of file dns_tests.c.

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◆ test_encode_empty_string()

static void test_encode_empty_string ( void )

static

Definition at line 71 of file dns_tests.c.

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◆ test_encode_hyphen_and_digits()

static void test_encode_hyphen_and_digits ( void )

static

Definition at line 761 of file dns_tests.c.

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◆ test_encode_invalid_chars()

static void test_encode_invalid_chars ( void )

static

Definition at line 185 of file dns_tests.c.

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◆ test_encode_label_too_long()

static void test_encode_label_too_long ( void )

static

Definition at line 221 of file dns_tests.c.

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◆ test_encode_leading_dot()

static void test_encode_leading_dot ( void )

static

Definition at line 212 of file dns_tests.c.

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◆ test_encode_max_label_length()

static void test_encode_max_label_length ( void )

static

Definition at line 748 of file dns_tests.c.

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◆ test_encode_multi_label()

static void test_encode_multi_label ( void )

static

Definition at line 107 of file dns_tests.c.

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◆ test_encode_non_string_type()

static void test_encode_non_string_type ( void )

static

Definition at line 174 of file dns_tests.c.

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◆ test_encode_null_inputs()

static void test_encode_null_inputs ( void )

static

Definition at line 156 of file dns_tests.c.

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◆ test_encode_root_dot()

static void test_encode_root_dot ( void )

static

Definition at line 82 of file dns_tests.c.

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◆ test_encode_simple_label()

static void test_encode_simple_label ( void )

static

Definition at line 93 of file dns_tests.c.

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◆ test_encode_trailing_dot()

static void test_encode_trailing_dot ( void )

static

Definition at line 125 of file dns_tests.c.

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◆ test_encode_underscore_prefix()

static void test_encode_underscore_prefix ( void )

static

Definition at line 140 of file dns_tests.c.

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◆ test_encode_where_outside_buf()

static void test_encode_where_outside_buf ( void )

static

Definition at line 247 of file dns_tests.c.

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◆ test_labels_block_tracking()

static void test_labels_block_tracking ( void )

static

Definition at line 674 of file dns_tests.c.

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◆ test_pointer_invalid_with_mark_tracking()

static void test_pointer_invalid_with_mark_tracking ( void )

static

Definition at line 707 of file dns_tests.c.

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◆ test_pointer_to_zero_label_rejected()

static void test_pointer_to_zero_label_rejected ( void )

static

Definition at line 728 of file dns_tests.c.

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◆ test_pointer_valid_no_tracking()

static void test_pointer_valid_no_tracking ( void )

static

Definition at line 690 of file dns_tests.c.

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◆ test_roundtrip_case_preservation()

static void test_roundtrip_case_preservation ( void )

static

Definition at line 597 of file dns_tests.c.

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◆ test_roundtrip_compressed()

static void test_roundtrip_compressed ( void )

static

Definition at line 775 of file dns_tests.c.

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◆ test_roundtrip_root()

static void test_roundtrip_root ( void )

static

Definition at line 556 of file dns_tests.c.

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◆ test_roundtrip_simple()

static void test_roundtrip_simple ( void )

static

Definition at line 511 of file dns_tests.c.

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◆ test_roundtrip_trailing_dot()

static void test_roundtrip_trailing_dot ( void )

static

Definition at line 535 of file dns_tests.c.

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◆ test_roundtrip_underscore()

static void test_roundtrip_underscore ( void )

static

Definition at line 577 of file dns_tests.c.

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◆ test_verify_empty()

static void test_verify_empty ( void )

static

Definition at line 495 of file dns_tests.c.

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◆ test_verify_simple()

static void test_verify_simple ( void )

static

Definition at line 482 of file dns_tests.c.

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Variable Documentation

◆ test_blocks

fr_dns_block_t test_blocks[256]

static

Definition at line 34 of file dns_tests.c.

◆ TEST_LIST

TEST_LIST

Definition at line 993 of file dns_tests.c.

◆ test_marker

uint8_t test_marker[65536]

static

Definition at line 35 of file dns_tests.c.

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ DNS_HDR_LEN

Function Documentation

◆ encode_label()

◆ labels_init()

◆ test_compress_62_byte_label()

◆ test_compress_63_byte_label()

◆ test_compress_middle_62_byte_label()

◆ test_compress_middle_63_byte_label()

◆ test_compress_two_names()

◆ test_decode_compressed_pointer()

◆ test_decode_forward_pointer_rejected()

◆ test_decode_invalid_high_bits()

◆ test_decode_label_invalid_chars()

◆ test_decode_label_overflow()

◆ test_decode_multi_label()

◆ test_decode_null_inputs()

◆ test_decode_pointer_to_pointer_rejected()

◆ test_decode_root_label()

◆ test_decode_self_pointer_rejected()

◆ test_decode_simple_label()

◆ test_decode_to_value_box_label_outside_buf()

◆ test_decode_to_value_box_zero_len()

◆ test_decode_total_length_exceeds_255()

◆ test_encode_buffer_too_small()

◆ test_encode_double_dot()

◆ test_encode_empty_string()

◆ test_encode_hyphen_and_digits()

◆ test_encode_invalid_chars()

◆ test_encode_label_too_long()

◆ test_encode_leading_dot()

◆ test_encode_max_label_length()

◆ test_encode_multi_label()

◆ test_encode_non_string_type()

◆ test_encode_null_inputs()

◆ test_encode_root_dot()

◆ test_encode_simple_label()

◆ test_encode_trailing_dot()

◆ test_encode_underscore_prefix()

◆ test_encode_where_outside_buf()

◆ test_labels_block_tracking()

◆ test_pointer_invalid_with_mark_tracking()

◆ test_pointer_to_zero_label_rejected()

◆ test_pointer_valid_no_tracking()

◆ test_roundtrip_case_preservation()

◆ test_roundtrip_compressed()

◆ test_roundtrip_root()

◆ test_roundtrip_simple()

◆ test_roundtrip_trailing_dot()

◆ test_roundtrip_underscore()

◆ test_verify_empty()

◆ test_verify_simple()

Variable Documentation

◆ test_blocks

◆ TEST_LIST

◆ test_marker