Header file for hs_cache.c. More...

#include <stdint.h>
#include "feature/hs/hs_common.h"
#include "feature/hs/hs_descriptor.h"
#include "feature/rend/rendcommon.h"
#include "feature/nodelist/torcert.h"

Data Structures
struct	hs_cache_intro_state_t

struct	hs_cache_client_intro_state_t

struct	hs_cache_dir_descriptor_t

Macros
#define	HS_CACHE_CLIENT_INTRO_STATE_MAX_AGE (2 * 60)

#define	HS_CACHE_MAX_AGE (22460*60)

#define	HS_CACHE_MAX_SKEW (246060)

#define	HS_CACHE_FAILURE_MAX_AGE (5*60)

Functions
static time_t	hs_cache_max_entry_lifetime (void)

void	hs_cache_init (void)

void	hs_cache_free_all (void)

void	hs_cache_clean_as_dir (time_t now)

size_t	hs_cache_handle_oom (time_t now, size_t min_remove_bytes)

unsigned int	hs_cache_get_max_descriptor_size (void)

int	hs_cache_store_as_dir (const char *desc)

int	hs_cache_lookup_as_dir (uint32_t version, const char query, const char *desc_out)

const hs_descriptor_t *	hs_cache_lookup_as_client (const struct ed25519_public_key_t *key)

const char *	hs_cache_lookup_encoded_as_client (const struct ed25519_public_key_t *key)

hs_desc_decode_status_t	hs_cache_store_as_client (const char desc_str, const struct ed25519_public_key_t identity_pk)

void	hs_cache_remove_as_client (const struct ed25519_public_key_t *key)

void	hs_cache_clean_as_client (time_t now)

void	hs_cache_purge_as_client (void)

void	hs_cache_client_intro_state_note (const struct ed25519_public_key_t service_pk, const struct ed25519_public_key_t auth_key, rend_intro_point_failure_t failure)

const hs_cache_intro_state_t *	hs_cache_client_intro_state_find (const struct ed25519_public_key_t service_pk, const struct ed25519_public_key_t auth_key)

void	hs_cache_client_intro_state_clean (time_t now)

void	hs_cache_client_intro_state_purge (void)

bool	hs_cache_client_new_auth_parse (const ed25519_public_key_t *service_pk)

size_t	hs_cache_get_total_allocation (void)

void	hs_cache_decrement_allocation (size_t n)

void	hs_cache_increment_allocation (size_t n)

Detailed Description

Header file for hs_cache.c.

Definition in file hs_cache.h.

Macro Definition Documentation

◆ HS_CACHE_CLIENT_INTRO_STATE_MAX_AGE

#define HS_CACHE_CLIENT_INTRO_STATE_MAX_AGE (2 * 60)

This is the maximum time an introduction point state object can stay in the client cache in seconds (2 mins or 120 seconds).

Definition at line 23 of file hs_cache.h.

◆ HS_CACHE_FAILURE_MAX_AGE

#define HS_CACHE_FAILURE_MAX_AGE (5*60)

How old do we keep an intro point failure entry in the failure cache?

Definition at line 31 of file hs_cache.h.

◆ HS_CACHE_MAX_AGE

#define HS_CACHE_MAX_AGE (2*24*60*60)

How old do we let hidden service descriptors get before discarding them as too old?

Definition at line 26 of file hs_cache.h.

◆ HS_CACHE_MAX_SKEW

#define HS_CACHE_MAX_SKEW (24*60*60)

How wrong do we assume our clock may be when checking whether hidden services are too old or too new?

Definition at line 29 of file hs_cache.h.

Function Documentation

◆ hs_cache_clean_as_client()

void hs_cache_clean_as_client ( time_t now )

Clean all client caches using the current time now.

Definition at line 942 of file hs_cache.c.

Referenced by clean_caches_callback().

◆ hs_cache_clean_as_dir()

void hs_cache_clean_as_dir ( time_t now )

Clean all directory caches using the current time now.

Definition at line 339 of file hs_cache.c.

Referenced by clean_caches_callback().

◆ hs_cache_client_intro_state_clean()

void hs_cache_client_intro_state_clean ( time_t now )

Cleanup the client introduction state cache.

Definition at line 1001 of file hs_cache.c.

Referenced by rend_cache_failure_clean_callback().

◆ hs_cache_client_intro_state_purge()

void hs_cache_client_intro_state_purge ( void )

Purge the client introduction state cache.

Definition at line 1021 of file hs_cache.c.

◆ hs_cache_decrement_allocation()

void hs_cache_decrement_allocation ( size_t n )

Decrement the total bytes attributed to the rendezvous cache by n.

Definition at line 1164 of file hs_cache.c.

Referenced by remove_v3_desc_as_client().

◆ hs_cache_free_all()

void hs_cache_free_all ( void )

Cleanup the hidden service cache subsystem.

Definition at line 1141 of file hs_cache.c.

Referenced by hs_free_all().

◆ hs_cache_get_max_descriptor_size()

unsigned int hs_cache_get_max_descriptor_size ( void )

Return the maximum size of a v3 HS descriptor.

Definition at line 1117 of file hs_cache.c.

◆ hs_cache_handle_oom()

size_t hs_cache_handle_oom	(	time_t	now,
		size_t	min_remove_bytes
	)

Do a round of OOM cleanup on all directory caches. Return the amount of removed bytes. It is possible that the returned value is lower than min_remove_bytes if the caches get emptied out so the caller should be aware of this.

Definition at line 1072 of file hs_cache.c.

◆ hs_cache_increment_allocation()

void hs_cache_increment_allocation ( size_t n )

Increase the total bytes attributed to the rendezvous cache by n.

Definition at line 1181 of file hs_cache.c.

◆ hs_cache_init()

void hs_cache_init ( void )

Initialize the hidden service cache subsystem.

Definition at line 1126 of file hs_cache.c.

Referenced by hs_init().

◆ hs_cache_lookup_as_dir()

int hs_cache_lookup_as_dir	(	uint32_t	version,
		const char *	query,
		const char **	desc_out
	)

Using the query, lookup in our directory cache the entry. If found, 1 is returned and desc_out is populated with a newly allocated string being the encoded descriptor. If not found, 0 is returned and desc_out is untouched. On error, a negative value is returned and desc_out is untouched.

Definition at line 318 of file hs_cache.c.

Referenced by handle_get_hs_descriptor_v3().

◆ hs_cache_purge_as_client()

void hs_cache_purge_as_client ( void )

Purge the client descriptor cache.

Definition at line 951 of file hs_cache.c.

◆ hs_cache_store_as_dir()

int hs_cache_store_as_dir ( const char * desc )

Given an encoded descriptor, store it in the directory cache depending on which version it is. Return a negative value on error. On success, 0 is returned.

Definition at line 281 of file hs_cache.c.

Data Structures

Macros

Functions