replay.c File Reference

Store and use a replay of events for the DNS resolver. More...

#include "config.h"
#include "util/log.h"
#include "util/net_help.h"
#include "testcode/replay.h"
#include "testcode/ldns-testpkts.h"

Defines
#define	MAX_LINE_LEN   10240
	max length of lines in file
Functions
static int	parse_keyword (char **line, char *keyword)
	parse keyword in string.
static void	replay_moment_delete (struct replay_moment *mom)
	delete moment
static void	replay_range_delete (struct replay_range *rng)
	delete range
static void	strip_end_white (char *p)
	strip whitespace from end of string
static struct replay_range *	replay_range_read (char *remain, FILE *in, const char *name, int *lineno, char *line, uint32_t *ttl, ldns_rdf **or, ldns_rdf **prev)
	Read a range from file.
static struct replay_moment *	replay_moment_read (char *remain, FILE *in, const char *name, int *lineno, uint32_t *ttl, ldns_rdf **or, ldns_rdf **prev)
	Read a replay moment 'STEP' from file.
static struct replay_scenario *	make_scenario (char *line)
	makes scenario with title on rest of line
struct replay_scenario *	replay_scenario_read (FILE *in, const char *name, int *lineno)
	Read a replay scenario from the file.
void	replay_scenario_delete (struct replay_scenario *scen)
	Delete scenario.

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Detailed Description

Store and use a replay of events for the DNS resolver.

Used to test known scenarios to get known outcomes.

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Function Documentation

static int parse_keyword	(	char **	line,
		char *	keyword
	)			[static]

parse keyword in string.

Parameters:

	line,:	if found, the line is advanced to after the keyword.
	keyword,:	string.

Returns:

: true if found, false if not.

Referenced by replay_moment_read(), replay_range_read(), and replay_scenario_read().

static struct replay_range* replay_range_read	(	char *	remain,
		FILE *	in,
		const char *	name,
		int *	lineno,
		char *	line,
		uint32_t *	ttl,
		ldns_rdf **	or,
		ldns_rdf **	prev
	)			[static, read]

Read a range from file.

Parameters:

	remain,:	Rest of line (after RANGE keyword).
	in,:	file to read from.
	name,:	name to print in errors.
	lineno,:	incremented as lines are read.
	line,:	line buffer.
	ttl,:	for readentry
	or,:	for readentry
	prev,:	for readentry

Returns:

: range object to add to list, or NULL on error.

References replay_range::addr, replay_range::addrlen, replay_range::end_step, extstrtoaddr(), fatal_exit(), log_err(), replay_range::match, MAX_LINE_LEN, entry::next, parse_keyword(), read_entry(), replay_range_delete(), replay_range::start_step, and strip_end_white().

Referenced by replay_scenario_read().

static struct replay_moment* replay_moment_read	(	char *	remain,
		FILE *	in,
		const char *	name,
		int *	lineno,
		uint32_t *	ttl,
		ldns_rdf **	or,
		ldns_rdf **	prev
	)			[static, read]

Read a replay moment 'STEP' from file.

Parameters:

	remain,:	Rest of line (after STEP keyword).
	in,:	file to read from.
	name,:	name to print in errors.
	lineno,:	incremented as lines are read.
	ttl,:	for readentry
	or,:	for readentry
	prev,:	for readentry

Returns:

: range object to add to list, or NULL on error.

References replay_moment::addr, replay_moment::addrlen, replay_moment::evt_type, extstrtoaddr(), fatal_exit(), log_err(), replay_moment::match, parse_keyword(), read_entry(), replay_moment::repevt_back_query, replay_moment::repevt_back_reply, replay_moment::repevt_error, replay_moment::repevt_front_query, replay_moment::repevt_front_reply, replay_moment::repevt_nothing, replay_moment::repevt_timeout, and replay_moment::time_step.

Referenced by replay_scenario_read().

struct replay_scenario* replay_scenario_read	(	FILE *	in,
		const char *	name,
		int *	lineno
	)			[read]

Read a replay scenario from the file.

Parameters:

	in,:	file to read from.
	name,:	name to print in errors.
	lineno,:	incremented for every line read.

Returns:

: Scenario. NULL if no scenario read.

References fatal_exit(), log_info(), make_scenario(), MAX_LINE_LEN, replay_scenario::mom_first, replay_scenario::mom_last, replay_moment::mom_next, replay_range::next_range, parse_keyword(), replay_scenario::range_list, replay_moment_read(), replay_range_read(), replay_scenario_delete(), and replay_moment::time_step.

Referenced by setup_playback().

void replay_scenario_delete

(

struct replay_scenario *

scen

)

Delete scenario.

Parameters:

scen,:

to delete.

References replay_scenario::mom_first, replay_moment::mom_next, replay_range::next_range, replay_scenario::range_list, replay_moment_delete(), replay_range_delete(), and replay_scenario::title.

Referenced by fake_event_cleanup(), and replay_scenario_read().