andna.h File Reference

#include "andna_cache.h"
#include "pkts.h"

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Data Structures
struct	andna_reg_pkt
struct	andna_resolve_rq_pkt
struct	andna_resolve_reply_pkt
struct	single_acache_hdr
struct	spread_acache_pkt

Macros
#define	MY_NAMESERV   "nameserver 127.0.0.1"
#define	MY_NAMESERV_IPV6   "nameserver ::1"
#define	ETC_RESOLV_CONF   "/etc/resolv.conf"
#define	ETC_RESOLV_CONF_BAK   "/etc/resolv.conf.bak"
#define	ANDNA_MAX_FLOODS   (ANDNA_MAX_QUEUE*3+1)
#define	ANDNA_MAX_NEW_GNODES   1024
#define	ANDNA_HOOK_TIMEOUT   8 /* seconds */
#define	ANDNA_REV_RESOLVE_RQ_TIMEOUT   60
#define	ANDNA_PKT_UPDATE   1 /* Update the hostname */
#define	ANDNA_PKT_FORWARD   (1<<1) /* Forward this pkt, plz */
#define	ANDNA_PKT_REV_RESOLVE   (1<<2) /* Give me your hostnames */
#define	ANDNA_PKT_JUST_CHECK
#define	ANDNA_PKT_SNSD_DEL   (1<<4) /* SNSD delete request */
#define	ANDNA_REG_PKT_SZ   (sizeof(struct andna_reg_pkt))
#define	ANDNA_REG_SIGNED_BLOCK_SZ
#define	ANDNA_RESOLVE_RQ_PKT_SZ   (sizeof(struct andna_resolve_rq_pkt))
#define	ANDNA_RESOLVE_REPLY_PKT_SZ   (sizeof(struct andna_resolve_reply_pkt))
#define	SINGLE_ACACHE_PKT_SZ(hgnodes)
#define	SPREAD_ACACHE_PKT_SZ   (sizeof(struct spread_acache_pkt))

Functions
int	andna_load_caches (void)
int	andna_save_caches (void)
void	andna_init (void)
void	andna_close (void)
void	andna_resolvconf_modify (void)
void	andna_resolvconf_restore (void)
int	andna_register_hname (lcl_cache *alcl, snsd_service *snsd_delete)
int	andna_recv_reg_rq (PACKET rpkt)
int	andna_check_counter (PACKET pkt)
int	andna_recv_check_counter (PACKET rpkt)
snsd_service *	andna_resolve_hash (u_int hname_hash[4], int service, u_char proto, int *records)
snsd_service *	andna_resolve_hname (char *hname, int service, u_char proto, int *records)
int	andna_recv_resolve_rq (PACKET rpkt)
lcl_cache *	andna_reverse_resolve (inet_prefix ip)
int	andna_recv_rev_resolve_rq (PACKET rpkt)
int	spread_single_acache (u_int hash[4])
int	recv_spread_single_acache (PACKET rpkt)
andna_cache *	get_single_andna_c (u_int hash[4], u_int hash_gnode[4])
int	put_single_acache (PACKET rpkt)
int	put_andna_cache (PACKET rq_pkt)
int	put_counter_cache (PACKET rq_pkt)
void *	andna_hook (void *)
void	andna_update_hnames (int only_new_hname)
void *	andna_maintain_hnames_active (void *null)
void *	andna_main (void *)

Variables
int	last_reg_pkt_id [(5 *3+1)]
int	last_counter_pkt_id [(5 *3+1)]
int	last_spread_acache_pkt_id [(5 *3+1)]
struct andna_reg_pkt	_PACKED_
static const int_info	andna_reg_pkt_iinfo
static const int_info	andna_resolve_rq_pkt_iinfo
static const int_info	andna_resolve_reply_pkt_iinfo
static const int_info	single_acache_hdr_iinfo
static const int_info	spread_acache_pkt_info = { 0, { 0 }, { 0 }, { 0 } }

Macro Definition Documentation

#define ANDNA_HOOK_TIMEOUT   8 /* seconds */

#define ANDNA_MAX_FLOODS   (ANDNA_MAX_QUEUE*3+1)

#define ANDNA_MAX_NEW_GNODES   1024

#define ANDNA_PKT_FORWARD   (1<<1) /* Forward this pkt, plz */

#define ANDNA_PKT_JUST_CHECK

Value:

(1<<3)      /* Check only, don't update
                           anything */

#define ANDNA_PKT_REV_RESOLVE   (1<<2) /* Give me your hostnames */

#define ANDNA_PKT_SNSD_DEL   (1<<4) /* SNSD delete request */

#define ANDNA_PKT_UPDATE   1 /* Update the hostname */

#define ANDNA_REG_PKT_SZ   (sizeof(struct andna_reg_pkt))

#define ANDNA_REG_SIGNED_BLOCK_SZ

Value:

(ANDNA_REG_PKT_SZ - ANDNA_SIGNATURE_LEN - \
                    sizeof(char))

#define ANDNA_RESOLVE_REPLY_PKT_SZ   (sizeof(struct andna_resolve_reply_pkt))

#define ANDNA_RESOLVE_RQ_PKT_SZ   (sizeof(struct andna_resolve_rq_pkt))

#define ANDNA_REV_RESOLVE_RQ_TIMEOUT   60

#define ETC_RESOLV_CONF   "/etc/resolv.conf"

#define ETC_RESOLV_CONF_BAK   "/etc/resolv.conf.bak"

#define MY_NAMESERV   "nameserver 127.0.0.1"

#define MY_NAMESERV_IPV6   "nameserver ::1"

#define SINGLE_ACACHE_PKT_SZ

(

hgnodes

)

Value:

(sizeof(struct single_acache_hdr)+\
                        MAX_IP_SZ*(hgnodes))

#define SPREAD_ACACHE_PKT_SZ   (sizeof(struct spread_acache_pkt))

Function Documentation

int andna_check_counter

(

PACKET

pkt

)

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void andna_close

(

void

)

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void* andna_hook

(

void *

)

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void andna_init

(

void

)

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int andna_load_caches

(

void

)

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void* andna_main

(

void *

)

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void* andna_maintain_hnames_active

(

void *

null

)

If we don't have rnodes, it's useless to try anything

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int andna_recv_check_counter

(

PACKET

rpkt

)

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int andna_recv_reg_rq

(

PACKET

rpkt

)

Check if the counter of number of updates matches with the pkt

Has the registration request been sent too early ?

Set the mainip flag only to the real mainip record, in this way we're sure that there is only one.

Broadcast the request to the entire gnode of level 1 to let the other nodes register the hname.

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int andna_recv_resolve_rq

(

PACKET

rpkt

)

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int andna_recv_rev_resolve_rq

(

PACKET

rpkt

)

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int andna_register_hname	(	lcl_cache *	alcl,
		snsd_service *	snsd_delete
	)

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void andna_resolvconf_modify

(

void

)

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void andna_resolvconf_restore

(

void

)

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snsd_service* andna_resolve_hash	(	u_int	hname_hash[4],
		int	service,
		u_char	proto,
		int *	records
	)

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snsd_service* andna_resolve_hname	(	char *	hname,
		int	service,
		u_char	proto,
		int *	records
	)

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lcl_cache* andna_reverse_resolve

(

inet_prefix

ip

)

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int andna_save_caches

(

void

)

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void andna_update_hnames

(

int

only_new_hname

)

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andna_cache* get_single_andna_c	(	u_int	hash[4],
		u_int	hash_gnode[4]
	)

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int put_andna_cache

(

PACKET

rq_pkt

)

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int put_counter_cache

(

PACKET

rq_pkt

)

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int put_single_acache

(

PACKET

rpkt

)

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int recv_spread_single_acache

(

PACKET

rpkt

)

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int spread_single_acache

(

u_int

hash[4]

)

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Variable Documentation

struct spread_acache_pkt _PACKED_

const int_info andna_reg_pkt_iinfo

static

Initial value:

=   { 1, 
                 {  (1<<1)   },
                 {  ( 4 *sizeof(int)) *2 +  140  },
                 { 1 },
                }

const int_info andna_resolve_reply_pkt_iinfo

static

Initial value:

= { 1, 
                       {  1   }, 
                       { 0 }, 
                       { 1 }
                     }

const int_info andna_resolve_rq_pkt_iinfo

static

Initial value:

=   { 1, 
                      {  1   },
                      {  ( 4 *sizeof(int)) *2+sizeof(char) },
                      { 1 },
                    }

int last_counter_pkt_id[(5 *3+1)]

int last_reg_pkt_id[(5 *3+1)]

int last_spread_acache_pkt_id[(5 *3+1)]

const int_info single_acache_hdr_iinfo

static

Initial value:

= { 1, 
                     {  (1<<1)   },
                     {  ( 4 *sizeof(int)) *2 },
                     { 1 },
                   }

const int_info spread_acache_pkt_info = { 0, { 0 }, { 0 }, { 0 } }

static