util.c File Reference

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Functions
void	xprintf_rdf (ldns_rdf *rd)
void	xprintf_rr (ldns_rr *rr)
ldns_lookup_table *	ldns_lookup_by_name (ldns_lookup_table *table, const char *name)
ldns_lookup_table *	ldns_lookup_by_id (ldns_lookup_table *table, int id)
int	ldns_get_bit (uint8_t bits[], size_t index)
	Returns the value of the specified bit The bits are counted from left to right, so bit #0 is the left most bit.
int	ldns_get_bit_r (uint8_t bits[], size_t index)
	Returns the value of the specified bit The bits are counted from right to left, so bit #0 is the right most bit.
void	ldns_set_bit (uint8_t *byte, int bit_nr, bool value)
	sets the specified bit in the specified byte to 1 if value is true, 0 if false The bits are counted from right to left, so bit #0 is the right most bit.
int	ldns_hexdigit_to_int (char ch)
	Returns the int value of the given (hex) digit.
char	ldns_int_to_hexdigit (int i)
	Returns the char (hex) representation of the given int.
const char *	ldns_version (void)
	Show the internal library version.
time_t	mktime_from_utc (const struct tm *tm)
	Convert TM to seconds since epoch (midnight, January 1st, 1970).
int	ldns_init_random (FILE *fd, unsigned int size)
	Init the random source applications should call this if they need entropy data within ldns If openSSL is available, it is automatically seeded from /dev/urandom or /dev/random.

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Function Documentation

void xprintf_rdf

(

ldns_rdf *

rd

)

Definition at line 30 of file util.c.

References ldns_rdf_data(), ldns_rdf_get_type(), and ldns_rdf_size().

void xprintf_rr

(

ldns_rr *

rr

)

Definition at line 40 of file util.c.

References ldns_struct_rr::_rdata_fields, ldns_rr_rd_count(), and xprintf_rdf().

ldns_lookup_table* ldns_lookup_by_name	(	ldns_lookup_table *	table,
		const char *	name
	)

Definition at line 54 of file util.c.

References ldns_struct_lookup_table::name.

ldns_lookup_table* ldns_lookup_by_id	(	ldns_lookup_table *	table,
		int	id
	)

Definition at line 65 of file util.c.

References ldns_struct_lookup_table::id, and ldns_struct_lookup_table::name.

int ldns_get_bit	(	uint8_t	bits[],
		size_t	index
	)

Returns the value of the specified bit The bits are counted from left to right, so bit #0 is the left most bit.

Parameters:

[in]	bits	array holding the bits
[in]	index	to the wanted bit

Returns:

Definition at line 76 of file util.c.

int ldns_get_bit_r	(	uint8_t	bits[],
		size_t	index
	)

Returns the value of the specified bit The bits are counted from right to left, so bit #0 is the right most bit.

Parameters:

[in]	bits	array holding the bits
[in]	index	to the wanted bit

Returns:

1 or 0 depending no the bit state

Definition at line 86 of file util.c.

void ldns_set_bit	(	uint8_t *	byte,
		int	bit_nr,
		bool	value
	)

sets the specified bit in the specified byte to 1 if value is true, 0 if false The bits are counted from right to left, so bit #0 is the right most bit.

Parameters:

[in]	byte	the bit to set the bit in
[in]	bit_nr	the bit to set (0 <= n <= 7)
[in]	value	whether to set the bit to 1 or 0

Returns:

1 or 0 depending no the bit state

Definition at line 96 of file util.c.

int ldns_hexdigit_to_int

(

char

ch

)

Returns the int value of the given (hex) digit.

Parameters:

[in]

ch

the hex char to convert

Returns:

the converted decimal value

Definition at line 108 of file util.c.

char ldns_int_to_hexdigit

(

int

ch

)

Returns the char (hex) representation of the given int.

Parameters:

[in]

ch

the int to convert

Returns:

the converted hex char

Definition at line 133 of file util.c.

const char* ldns_version

(

void

)

Show the internal library version.

Returns:

a string with the version in it

Definition at line 158 of file util.c.

References LDNS_VERSION.

time_t mktime_from_utc

(

const struct tm *

tm

)

Convert TM to seconds since epoch (midnight, January 1st, 1970).

Like timegm(3), which is not always available.

Parameters:

[in]

tm

a struct tm* with the date

Returns:

the seconds since epoch

Definition at line 186 of file util.c.

int ldns_init_random	(	FILE *	fd,
		unsigned int	size
	)

Init the random source applications should call this if they need entropy data within ldns If openSSL is available, it is automatically seeded from /dev/urandom or /dev/random.

Seed the random function.

If you need more entropy, or have no openssl available, this function MUST be called at the start of the program

If openssl *is* available, this function just adds more entropy

Definition at line 222 of file util.c.

References LDNS_FREE, and LDNS_XMALLOC.