314 lines
10 KiB
C
314 lines
10 KiB
C
/*
|
|
* from db.h 4.16 (Berkeley) 6/1/90
|
|
* $Id: db_defs.h,v 8.38 2000/04/21 06:54:01 vixie Exp $
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1985, 1990
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies, and that
|
|
* the name of Digital Equipment Corporation not be used in advertising or
|
|
* publicity pertaining to distribution of the document or software without
|
|
* specific, written prior permission.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
|
|
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
|
|
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* Portions Copyright (c) 1996-2000 by Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
|
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* Global definitions for data base routines.
|
|
*/
|
|
|
|
/* max length of data in RR data field */
|
|
#define MAXDATA (2*MAXDNAME + 5*INT32SZ)
|
|
|
|
/* max length of data in a TXT RR segment */
|
|
#define MAXCHARSTRING 255
|
|
|
|
#define DB_ROOT_TIMBUF 3600
|
|
#define TIMBUF 300
|
|
|
|
#define DICT_INDEXBITS 24
|
|
#define DICT_MAXLENGTH 127
|
|
#define DICT_INSERT_P 0x0001
|
|
|
|
/* Average hash chain depths. */
|
|
#define AVGCH_MARSHAL 5
|
|
#define AVGCH_NLOOKUP 3
|
|
|
|
/* Nonstandard maximum class to force better packing. */
|
|
#define ZONE_BITS 24
|
|
#define CLASS_BITS 8
|
|
#define ZONE_MAX ((1<<ZONE_BITS)-1)
|
|
#define CLASS_MAX ((1<<CLASS_BITS)-1)
|
|
|
|
/*
|
|
* Hash table structures.
|
|
*/
|
|
struct databuf {
|
|
struct databuf *d_next; /* linked list */
|
|
struct nameser *d_ns; /* NS from whence this came */
|
|
u_int32_t d_ttl; /* time to live */
|
|
/* if d_zone == DB_Z_CACHE, then
|
|
* d_ttl is actually the time when
|
|
* the record will expire.
|
|
* otherwise (for authoritative
|
|
* primary and secondary zones),
|
|
* d_ttl is the time to live.
|
|
*/
|
|
unsigned d_zone :ZONE_BITS; /* zone number or 0 for the cache */
|
|
unsigned d_class :CLASS_BITS; /* class number (nonstandard limit) */
|
|
unsigned d_flags :4; /* DB_F_{??????} */
|
|
unsigned d_secure :2; /* DB_S_{??????} */
|
|
unsigned d_cred :3; /* DB_C_{??????} */
|
|
unsigned d_clev :6;
|
|
unsigned d_rcode :4; /* rcode for negative caching */
|
|
unsigned d_mark :3; /* place to mark data */
|
|
int16_t d_type; /* type number */
|
|
int16_t d_size; /* size of data area */
|
|
u_int32_t d_rcnt;
|
|
u_int16_t d_nstime; /* NS response time, milliseconds */
|
|
u_char d_data[sizeof(void*)]; /* dynamic (padded) */
|
|
};
|
|
#define DATASIZE(n) (sizeof(struct databuf) - sizeof(void*) + n)
|
|
|
|
#ifdef BIND_UPDATE
|
|
/*
|
|
* d_mark definitions
|
|
*/
|
|
#define D_MARK_DELETED 0x01
|
|
#define D_MARK_ADDED 0x02
|
|
#define D_MARK_FOUND 0x04
|
|
#endif
|
|
|
|
/*
|
|
* d_flags definitions
|
|
*/
|
|
#define DB_F_HINT 0x01 /* databuf belongs to fcachetab */
|
|
#define DB_F_ACTIVE 0x02 /* databuf is linked into a cache */
|
|
#define DB_F_FREE 0x04 /* databuf has been freed */
|
|
#define DB_F_LAME 0x08 /* databuf may refer to lame server */
|
|
|
|
/*
|
|
* d_cred definitions
|
|
*/
|
|
#define DB_C_ZONE 4 /* authoritative zone - best */
|
|
#define DB_C_AUTH 3 /* authoritative answer */
|
|
#define DB_C_ANSWER 2 /* non-authoritative answer */
|
|
#define DB_C_ADDITIONAL 1 /* additional data */
|
|
#define DB_C_CACHE 0 /* cache - worst */
|
|
|
|
/*
|
|
* d_secure definitions
|
|
*/
|
|
#define DB_S_SECURE 2 /* secure (verified) data */
|
|
#define DB_S_INSECURE 1 /* insecure data */
|
|
#define DB_S_FAILED 0 /* data that failed a security check */
|
|
|
|
struct namebuf {
|
|
u_int n_hashval; /* hash value of _n_name */
|
|
struct namebuf *n_next; /* linked list */
|
|
struct databuf *n_data; /* data records */
|
|
struct namebuf *n_parent; /* parent domain */
|
|
struct hashbuf *n_hash; /* hash table for children */
|
|
char _n_name[sizeof(void*)]; /* Counted str (dynamic). */
|
|
};
|
|
#define NAMESIZE(n) (sizeof(struct namebuf) - sizeof(void*) + 1 + n + 1)
|
|
#define NAMELEN(nb) (((u_char *)((nb)._n_name))[0])
|
|
#define NAME(nb) ((nb)._n_name + 1)
|
|
|
|
struct hashbuf {
|
|
int h_size; /* size of hash table */
|
|
int h_cnt; /* number of entries */
|
|
struct namebuf *h_tab[1]; /* allocated as needed */
|
|
};
|
|
#define HASHSIZE(s) (sizeof(struct hashbuf) + (s-1) * sizeof(struct namebuf *))
|
|
|
|
#define HASHSHIFT 3
|
|
#define HASHMASK 0x1f
|
|
#define HASHROTATE(v) \
|
|
(((v) << HASHSHIFT) | ((v) >> ((sizeof(v) * 8) - HASHSHIFT)))
|
|
#define HASHLOWER(c) ((isascii(c) && isupper(c)) ? tolower(c) : (c))
|
|
#define HASHIMILATE(v,c) ((v) = (HASHROTATE(v)) + (HASHLOWER(c) & HASHMASK))
|
|
|
|
#define TSIG_BUF_SIZE 640
|
|
#define TSIG_SIG_SIZE 20
|
|
|
|
struct tsig_record {
|
|
u_int8_t sig[TSIG_SIG_SIZE];
|
|
struct dst_key *key;
|
|
int siglen;
|
|
};
|
|
|
|
struct sig_record {
|
|
u_int16_t sig_type_n;
|
|
u_int8_t sig_alg_n, sig_labels_n;
|
|
u_int32_t sig_ottl_n, sig_exp_n, sig_time_n;
|
|
u_int16_t sig_keyid_n;
|
|
};
|
|
|
|
/* This is the wire format size of "struct sig_record", i.e., no padding. */
|
|
#define SIG_HDR_SIZE 18
|
|
|
|
struct dnode {
|
|
struct databuf *dp;
|
|
struct dnode *dn_next;
|
|
int line;
|
|
char *file;
|
|
};
|
|
|
|
typedef struct dnode * dlist;
|
|
|
|
struct db_rrset {
|
|
dlist rr_list;
|
|
dlist rr_sigs;
|
|
char *rr_name;
|
|
int16_t rr_class;
|
|
int16_t rr_type;
|
|
struct db_rrset *rr_next;
|
|
};
|
|
#define DBHASHSIZE(s) (sizeof(struct hashbuf) + \
|
|
(s-1) * sizeof(struct db_rrset *))
|
|
|
|
#define SIG_COVERS(dp) (ns_get16(dp->d_data))
|
|
|
|
/*
|
|
* Flags to updatedb
|
|
*/
|
|
#define DB_NODATA 0x01 /* data should not exist */
|
|
#define DB_MEXIST 0x02 /* data must exist */
|
|
#define DB_DELETE 0x04 /* delete data if it exists */
|
|
#define DB_NOTAUTH 0x08 /* must not update authoritative data */
|
|
#define DB_NOHINTS 0x10 /* don't reflect update in fcachetab */
|
|
#define DB_PRIMING 0x20 /* is this update the result of priming? */
|
|
#define DB_MERGE 0x40 /* make no control on rr in db_update (for ixfr) */
|
|
#define DB_REPLACE 0x80 /* replace data if it exists */
|
|
|
|
#define DB_Z_CACHE 0 /* cache-zone-only db_dump() */
|
|
#define DB_Z_ALL 65535 /* normal db_dump() */
|
|
#define DB_Z_SPECIAL(z) ((z) == DB_Z_CACHE || (z) == DB_Z_ALL)
|
|
|
|
/*
|
|
* Error return codes
|
|
*/
|
|
#define OK 0
|
|
#define NONAME (-1)
|
|
#define NOCLASS (-2)
|
|
#define NOTYPE (-3)
|
|
#define NODATA (-4)
|
|
#define DATAEXISTS (-5)
|
|
#define NODBFILE (-6)
|
|
#define TOOMANYZONES (-7)
|
|
#define GOODDB (-8)
|
|
#define NEWDB (-9)
|
|
#define AUTH (-10)
|
|
#ifdef BIND_UPDATE
|
|
#define SERIAL (-11)
|
|
#endif
|
|
#define CNAMEANDOTHER (-12)
|
|
#define DNSSECFAIL (-13) /* db_set_update */
|
|
|
|
/*
|
|
* getnum() options
|
|
*/
|
|
#define GETNUM_NONE 0x00 /* placeholder */
|
|
#define GETNUM_SERIAL 0x01 /* treat as serial number */
|
|
#define GETNUM_SCALED 0x02 /* permit "k", "m" suffixes, scale result */
|
|
|
|
/*
|
|
* db_load() options
|
|
*/
|
|
#define ISNOTIXFR 0
|
|
#define ISIXFR 1
|
|
#define ISAXFRIXFR 2
|
|
|
|
/*
|
|
* Database access abstractions.
|
|
*/
|
|
#define foreach_rr(dp, np, ty, cl, zn) \
|
|
for ((dp) = (np)->n_data; (dp) != NULL; (dp) = (dp)->d_next) \
|
|
if (!match(dp, (cl), (ty))) \
|
|
continue; \
|
|
else if (((zn) == DB_Z_CACHE) \
|
|
? stale(dp) \
|
|
: (zn) != (dp)->d_zone) \
|
|
continue; \
|
|
else if ((dp)->d_rcode) \
|
|
continue; \
|
|
else \
|
|
/* Caller code follows in sequence. */
|
|
|
|
#define DRCNTINC(x) \
|
|
do { \
|
|
if (++((x)->d_rcnt) == 0) \
|
|
ns_panic(ns_log_db, 1, "++d_rcnt == 0"); \
|
|
} while (0)
|
|
|
|
#define DRCNTDEC(x) \
|
|
do { \
|
|
if (((x)->d_rcnt)-- == 0) \
|
|
ns_panic(ns_log_db, 1, "d_rcnt-- == 0"); \
|
|
} while (0)
|
|
|
|
#define ISVALIDGLUE(xdp) ((xdp)->d_type == T_NS || (xdp)->d_type == T_A \
|
|
|| (xdp)->d_type == T_AAAA || (xdp)->d_type == ns_t_a6)
|
|
|