This commit was generated by cvs2svn to compensate for changes in r99179,

which included commits to RCS files with non-trunk default branches.
This commit is contained in:
Doug Barton 2002-07-01 01:07:56 +00:00
commit cc893dce92
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=99180
44 changed files with 975 additions and 213 deletions

View File

@ -1,4 +1,116 @@
--- 8.3.3-REL released --- (Wed Jun 26 21:15:43 PDT 2002)
1301. [func] log attempts to exploit #1300.
1300. [bug] Remote buffer overrun.
1299. [func] Log to xfer-in when a named-xfer fails and one of
the masters returned REFUSED.
1298. [bug] named could leak a OPT record when returning a
negative response.
1297. [func] 'ndc restart' will now attempt to preserve the
arguments named was started with.
Use 'ndc restart --' to clear the arguements.
Use 'ndc restart <new arguements>' to restart named
with a alternate set of arguements.
1296. [bug] delay setting need_restart until the response to
ndc exec has been sent.
1295. [func] new ndc command 'args'. returns the arguements that
named was started with %xx escaped.
1294. [bug] #1272 broke linkage for those OS's using -lfl (flex).
Move -ll/-lfl to LIBL for all platforms.
--- 8.3.2-REL released --- (Mon Jun 17 20:24:32 PDT 2002)
1293. [doc] update man pages for 'dig', 'dnsquery' and 'host'
to reflect IPv6 capabilities (nslookup and nsupdate
were already IPv4/IPv6 agnostic).
1292. [func] host: the default lookups now also include AAAA
records.
1291. [func] 'dig -x <ip6>' now works.
1290. [bug] 'dig @server' fail to report the IPv6 address of the
server in error messages.
1289. [contrib] normalize_zone now handles $TTL.
1288. [bug] named: -t and -w could not be used together.
1287. [func] report serial(s) in out going transfer operation.
--- 8.3.2-RC1 released --- (Thu May 30 23:06:11 PDT 2002)
1286. [func] libbind: no longer attempts bit string labels for
IPv6 reverse resolution. Try IP6.ARPA then IP6.INT
for nibble style resolution.
1285. [port] linux: ss_family vs __ss_family in sockaddr_storage.
1284. [port] freebsd: 5.0 uses gid_t rather that int for
GETGROUPLIST_ARGS
1283. [port] bsdi: 4.2 also has struct sockaddr_storage.
1282. [bug] nslookup was using inet_ntoa() to print out a IPv6
address.
1281. [bug] escape '(' and ')' when coverting to presentation
form.
1280. [func] server { edns yes_or_no; } is now supported.
1279. [bug] nslookup: partial coversion to similar style outputs
for both -type=aaaa and -type=a.
1278. [bug] free() of non-malloced memory in nslookup.
1277. [port] cast all instances of yytext in commands.l to (char*)
to silence compilers on OS's where lex declares it
as (unsigned char *).
1276. [port] hpux 11.22: ansify GetAnswer in getinfo.c to
silence compiler.
1275. [bug] bad declaration of si in tsig_key_from_addr().
1274. [port] hpux 11.22: ansify hexstring() and display() in
addr.c to silence compiler.
1273. [bug] const pointer conficts in res_debug.c.
1272. [port] hpux 11.22: don't link against -ll unless required.
1272. [bug] main_need_num was not last entry in enum.
main_need_tick nolonger required.
1271. [port] hpux: treat all hpux systems as BIG_ENDIAN, don't
include <sys/mbuf.h>.
1270. [port] hpux 11.22 namespace clash DATASIZE -> BIND_DATASIZE.
1269. [port] hpux 11.11 interface scaning.
1268. [port] solaris: 64 bit binary compatability.
1267. [bug] aix4: missing IN6_IS_ADDR_V4COMPAT macro.
1266. [bug] If you are using TSIG #1261 introduced the potential
of a infinite loop.
1265. [bug] nslookup failed on platforms that don't have BSD 43
style sockets.
1264. [bug] LINK_INIT and UNLINK were not compatible with
C++, use LINK_INIT_TYPE and UNLINK_TYPE instead.
--- 8.3.2-T1B released --- (Tue May 7 18:49:58 PDT 2002)
1263. [bug] gethostans() could get out of sync parsing the

View File

@ -10,6 +10,11 @@ artifacts including BIND, INN, and DHCP.
Note that BIND 8 is in "end-of-life", having been replaced by BIND 9. See
http://www.isc.org/ for more details.
BIND 8.3.3 Highlights
Security Fix libbind. All applications linked against libbind
need to relinked.
'rndc restart' now preserves named's arguements
BIND 8.3.2 Highlights
dig, nslookup, host and nsupdate have improved IPv6 support.

View File

@ -1 +1 @@
8.3.2-T1B
8.3.3-REL

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: addr.c,v 8.8 1999/10/13 16:38:55 vixie Exp $";
static const char rcsid[] = "$Id: addr.c,v 8.9 2002/05/21 02:26:21 marka Exp $";
#endif /* not lint */
/*
@ -47,11 +47,7 @@ usage() {
/* Warning: this scribbles on `dst' even if it's going to return `0'. */
static int
hexstring(src, dst, len)
const char *src;
u_char *dst;
int len;
{
hexstring(const char *src, u_char *dst, int len) {
static const char xdigits[] = "0123456789abcdef";
u_char *ptr = dst, *end = dst + len;
u_int val;
@ -100,12 +96,7 @@ hexstring(src, dst, len)
}
static void
display(input, af, addr, len)
const char *input;
int af;
const u_char *addr;
int len;
{
display(const char *input, int af, const u_char *addr, int len) {
static int before = 0;
char p[sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255"];
int i;

View File

@ -1,5 +1,5 @@
#ifndef lint
static const char rcsid[] = "$Id: dig.c,v 8.54 2002/04/24 00:38:08 marka Exp $";
static const char rcsid[] = "$Id: dig.c,v 8.57 2002/06/18 02:26:49 marka Exp $";
#endif
/*
@ -245,6 +245,7 @@ static int print_axfr(FILE *output, const u_char *msg,
static struct timeval difftv(struct timeval, struct timeval);
static void prnttime(struct timeval);
static void stackarg(char *, char **);
static void reverse6(char *, struct in6_addr *);
/* Public. */
@ -289,6 +290,8 @@ main(int argc, char **argv) {
int wait=0, delay;
int envset=0, envsave=0;
struct __res_state res_x, res_t;
int r;
struct in6_addr in6;
ns_tsig_key key;
char *keyfile = NULL, *keyname = NULL;
@ -494,6 +497,11 @@ main(int argc, char **argv) {
printf("; no arg for -x?\n");
break;
}
r = inet_pton(AF_INET6, addrc, &in6);
if (r > 0) {
reverse6(domain, &in6);
break;
}
addrend = addrc + strlen(addrc);
if (*addrend == '.')
*addrend = '\0';
@ -813,7 +821,7 @@ main(int argc, char **argv) {
buf, sizeof(buf));
break;
case AF_INET6:
inet_ntop(AF_INET,
inet_ntop(AF_INET6,
&u[0].sin6.sin6_addr,
buf, sizeof(buf));
break;
@ -1030,7 +1038,7 @@ where: server,\n\
fputs("\
notes: defname and search don't work; use fully-qualified names.\n\
this is DiG version " VSTRING "\n\
$Id: dig.c,v 8.54 2002/04/24 00:38:08 marka Exp $\n\
$Id: dig.c,v 8.57 2002/06/18 02:26:49 marka Exp $\n\
", stderr);
}
@ -1775,3 +1783,24 @@ stackarg(char *l, char **y) {
}
}
}
static void
reverse6(char *domain, struct in6_addr *in6) {
sprintf(domain, "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa",
in6->s6_addr[15] & 0x0f, (in6->s6_addr[15] >> 4) & 0x0f,
in6->s6_addr[14] & 0x0f, (in6->s6_addr[14] >> 4) & 0x0f,
in6->s6_addr[13] & 0x0f, (in6->s6_addr[13] >> 4) & 0x0f,
in6->s6_addr[12] & 0x0f, (in6->s6_addr[12] >> 4) & 0x0f,
in6->s6_addr[11] & 0x0f, (in6->s6_addr[11] >> 4) & 0x0f,
in6->s6_addr[10] & 0x0f, (in6->s6_addr[10] >> 4) & 0x0f,
in6->s6_addr[9] & 0x0f, (in6->s6_addr[9] >> 4) & 0x0f,
in6->s6_addr[8] & 0x0f, (in6->s6_addr[8] >> 4) & 0x0f,
in6->s6_addr[7] & 0x0f, (in6->s6_addr[7] >> 4) & 0x0f,
in6->s6_addr[6] & 0x0f, (in6->s6_addr[6] >> 4) & 0x0f,
in6->s6_addr[5] & 0x0f, (in6->s6_addr[5] >> 4) & 0x0f,
in6->s6_addr[4] & 0x0f, (in6->s6_addr[4] >> 4) & 0x0f,
in6->s6_addr[6] & 0x0f, (in6->s6_addr[3] >> 4) & 0x0f,
in6->s6_addr[2] & 0x0f, (in6->s6_addr[2] >> 4) & 0x0f,
in6->s6_addr[1] & 0x0f, (in6->s6_addr[1] >> 4) & 0x0f,
in6->s6_addr[0] & 0x0f, (in6->s6_addr[0] >> 4) & 0x0f);
}

View File

@ -1,5 +1,5 @@
#ifndef lint
static const char rcsid[] = "$Id: host.c,v 8.52 2002/04/28 01:34:52 marka Exp $";
static const char rcsid[] = "$Id: host.c,v 8.53 2002/06/18 02:34:02 marka Exp $";
#endif /* not lint */
/*
@ -675,7 +675,7 @@ gethostinfo(char *name) {
static int
getdomaininfo(const char *name, const char *domain) {
int val1, val2;
int val1, val2, val3;
if (querytype)
return (getinfo(name, domain, gettype=querytype));
@ -683,8 +683,9 @@ getdomaininfo(const char *name, const char *domain) {
val1 = getinfo(name, domain, gettype=ns_t_a);
if (cname || verbose)
return (val1);
val2 = getinfo(name, domain, gettype=ns_t_mx);
return (val1 || val2);
val2 = getinfo(name, domain, gettype=ns_t_aaaa);
val3 = getinfo(name, domain, gettype=ns_t_mx);
return (val1 || val2 || val3);
}
}
@ -1582,6 +1583,7 @@ static const char *
pr_type(int type) {
if (!verbose) switch (type) {
case ns_t_a:
case ns_t_aaaa:
return ("has address");
case ns_t_cname:
return ("is a nickname for");

View File

@ -1,6 +1,6 @@
/*
* from db.h 4.16 (Berkeley) 6/1/90
* $Id: db_defs.h,v 8.46 2001/11/17 15:16:46 marka Exp $
* $Id: db_defs.h,v 8.47 2002/05/18 01:02:53 marka Exp $
*/
/*
@ -147,7 +147,7 @@ struct databuf {
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)
#define BIND_DATASIZE(n) (sizeof(struct databuf) - sizeof(void*) + n)
#ifdef HITCOUNTS
extern u_int32_t db_total_hits;

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)db_glue.c 4.4 (Berkeley) 6/1/90";
static const char rcsid[] = "$Id: db_glue.c,v 8.46 2001/11/25 23:52:19 marka Exp $";
static const char rcsid[] = "$Id: db_glue.c,v 8.47 2002/05/18 01:02:54 marka Exp $";
#endif /* not lint */
/*
@ -441,7 +441,7 @@ nhash(const char *name) {
static void
db_freedata(struct databuf *dp) {
int bytes = DATASIZE(dp->d_size);
int bytes = BIND_DATASIZE(dp->d_size);
if (dp->d_rcnt != 0)
panic("db_freedata: d_rcnt != 0", NULL);

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)db_save.c 4.16 (Berkeley) 3/21/91";
static const char rcsid[] = "$Id: db_save.c,v 8.29 2001/04/25 13:53:09 marka Exp $";
static const char rcsid[] = "$Id: db_save.c,v 8.30 2002/05/18 01:02:56 marka Exp $";
#endif /* not lint */
/*
@ -137,7 +137,7 @@ savedata(class, type, ttl, data, size)
int size;
{
struct databuf *dp;
int bytes = DATASIZE(size);
int bytes = BIND_DATASIZE(size);
dp = (struct databuf *)memget(bytes);
if (dp == NULL)

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: db_tsig.c,v 8.7 2001/06/18 14:42:59 marka Exp $";
static const char rcsid[] = "$Id: db_tsig.c,v 8.8 2002/05/21 02:34:32 marka Exp $";
#endif /* not lint */
/*
@ -129,7 +129,7 @@ tsig_alg_value(char *name) {
DST_KEY *
tsig_key_from_addr(struct in_addr addr) {
server_info si = si = find_server(addr);
server_info si = find_server(addr);
if (si == NULL || si->key_list == NULL || si->key_list->first == NULL)
return(NULL);
return(si->key_list->first->key);

View File

@ -267,6 +267,8 @@ zone "non-default-acl.demo.zone" {
acl key_acl { key sample_key; }; // a request signed with sample_key
server 1.2.3.4 {
edns no; // if no, we won't send ends queries
// to this server
bogus no; // if yes, we won't query or listen
// to this server
transfer-format one-answer; // set transfer format for this

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_config.c,v 8.134 2002/04/25 05:27:04 marka Exp $";
static const char rcsid[] = "$Id: ns_config.c,v 8.135 2002/05/24 03:04:59 marka Exp $";
#endif /* not lint */
/*
@ -2549,6 +2549,7 @@ new_server(struct in_addr address) {
si->flags |= SERVER_INFO_SUPPORT_IXFR;
else
si->flags &= ~SERVER_INFO_SUPPORT_IXFR;
si->flags |= SERVER_INFO_EDNS;
return (si);
}
@ -2649,6 +2650,7 @@ set_server_option(server_config sc, int bool_opt, int value) {
switch (bool_opt) {
case SERVER_INFO_BOGUS:
case SERVER_INFO_SUPPORT_IXFR:
case SERVER_INFO_EDNS:
if (value)
si->flags |= bool_opt;
else

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_ctl.c,v 8.46 2001/12/19 11:53:48 marka Exp $";
static const char rcsid[] = "$Id: ns_ctl.c,v 8.47 2002/06/24 07:11:07 marka Exp $";
#endif /* not lint */
/*
@ -112,6 +112,8 @@ static void verb_stop(struct ctl_sctx *, struct ctl_sess *,
static void verb_exec(struct ctl_sctx *, struct ctl_sess *,
const struct ctl_verb *,
const char *, u_int, const void *, void *);
static void exec_closure(struct ctl_sctx *, struct ctl_sess *,
void *);
static void verb_reload(struct ctl_sctx *, struct ctl_sess *,
const struct ctl_verb *,
const char *, u_int, const void *, void *);
@ -141,6 +143,9 @@ static void verb_help(struct ctl_sctx *, struct ctl_sess *,
static void verb_quit(struct ctl_sctx *, struct ctl_sess *,
const struct ctl_verb *,
const char *, u_int, const void *, void *);
static void verb_args(struct ctl_sctx *, struct ctl_sess *,
const struct ctl_verb *,
const char *, u_int, const void *, void *);
/* Private data. */
@ -162,6 +167,7 @@ static struct ctl_verb verbs[] = {
{ "qrylog", verb_querylog, "qrylog"},
{ "help", verb_help, "help"},
{ "quit", verb_quit, "quit"},
{ "args", verb_args, "args"},
{ NULL, NULL, NULL}
};
@ -794,13 +800,25 @@ verb_exec(struct ctl_sctx *ctl, struct ctl_sess *sess,
saved_argv[0], save);
ctl_response(sess, 502, save, 0, NULL, NULL, NULL,
NULL, 0);
} else if (user_name != NULL || group_name != NULL) {
ctl_response(sess, 502,
"can't exec as user or group was specified",
0, NULL, NULL, NULL, NULL, 0);
} else {
ns_need(main_need_restart);
ctl_response(sess, 250, "Restart initiated.", 0, NULL,
NULL, NULL, NULL, 0);
exec_closure, NULL, NULL, 0);
}
}
static void
exec_closure(struct ctl_sctx *sctx, struct ctl_sess *sess, void *uap) {
UNUSED(sctx);
UNUSED(sess);
UNUSED(uap);
ns_need(main_need_restart);
}
static void
verb_reload(struct ctl_sctx *ctl, struct ctl_sess *sess,
const struct ctl_verb *verb, const char *rest,
@ -1049,3 +1067,81 @@ verb_quit(struct ctl_sctx *ctl, struct ctl_sess *sess,
ctl_response(sess, 221, "End of control session.", CTL_EXIT, NULL,
NULL, NULL, NULL, 0);
}
static char hex[] = "0123456789abcdef";
struct pvt_args {
int argc;
char text[MAX_STR_LEN];
};
static void
args_closure(struct ctl_sctx *sctx, struct ctl_sess *sess, void *uap) {
struct pvt_args *pvt = ctl_getcsctx(sess);
UNUSED(sctx);
UNUSED(uap);
memput(pvt, sizeof *pvt);
ctl_setcsctx(sess, NULL);
}
static void
verb_args(struct ctl_sctx *ctl, struct ctl_sess *sess,
const struct ctl_verb *verb, const char *rest,
u_int respflags, const void *respctx, void *uctx)
{
struct pvt_args *pvt = ctl_getcsctx(sess);
char *cp, *tp;
UNUSED(ctl);
UNUSED(verb);
UNUSED(rest);
UNUSED(respflags);
UNUSED(respctx);
UNUSED(uctx);
if (pvt == NULL) {
unsigned int i = 0;
pvt = memget(sizeof *pvt);
if (pvt == NULL) {
ctl_response(sess, 505, "(out of memory)",
0, NULL, NULL, NULL, NULL, 0);
return;
}
pvt->argc = 0;
ctl_setcsctx(sess, pvt);
/* Send the arguement count. */
while (saved_argv[i] != NULL)
i++;
sprintf(pvt->text, "%u", i);
ctl_response(sess, 250, pvt->text, CTL_MORE,
NULL, args_closure, NULL, NULL, 0);
return;
}
/*
* Percent escape arguement.
*/
cp = saved_argv[pvt->argc++];
tp = pvt->text;
while (cp && *cp != NULL)
if (*cp == '%' || *cp == ' ' ||
!isprint((unsigned char)*cp)) {
if (tp >= pvt->text + sizeof(pvt->text) - 4)
break;
*tp++ = '%';
*tp++ = hex[(*cp>>4)&0xf];
*tp++ = hex[(*cp++)&0xf];
} else {
if (tp >= pvt->text + sizeof(pvt->text) - 2)
break;
*tp++ = *cp++;
}
*tp = '\0';
ctl_response(sess, 250, pvt->text,
saved_argv[pvt->argc] == NULL ? 0 : CTL_MORE,
NULL, args_closure, NULL, NULL, 0);
}

View File

@ -1,6 +1,6 @@
/*
* from ns.h 4.33 (Berkeley) 8/23/90
* $Id: ns_defs.h,v 8.118 2002/04/25 05:27:06 marka Exp $
* $Id: ns_defs.h,v 8.121 2002/06/26 03:27:19 marka Exp $
*/
/*
@ -172,9 +172,8 @@ typedef enum need {
main_need_restart, /* exec() needed. */
main_need_reap, /* need to reap dead children. */
main_need_noexpired, /* ns_reconfig() needed w/ noexpired set. */
main_need_num, /* number of needs, used for array bound. */
main_need_tick, /* tick every second to poll for cleanup (NT) */
main_need_tryxfer /* attemt to start a zone transfer. */
main_need_tryxfer, /* attemt to start a zone transfer. */
main_need_num /* MUST BE LAST. */
} main_need;
/* What global options are set? */
@ -438,6 +437,7 @@ enum zonetype { z_nil, z_master, z_slave, z_hint, z_stub, z_forward,
#define XFER_SUCCESSAXFR 4 /* named-xfr recived a xfr */
#define XFER_SUCCESSIXFR 5 /* named-xfr recived a ixfr */
#define XFER_SUCCESSAXFRIXFRFILE 6 /* named-xfr received AXFR for IXFR */
#define XFER_REFUSED 7 /* one master returned REFUSED */
#define XFER_ISAXFR -1 /* the last XFR is AXFR */
#define XFER_ISIXFR -2 /* the last XFR is IXFR */
#define XFER_ISAXFRIXFR -3 /* the last XFR is AXFR but we must create IXFR base */
@ -835,6 +835,7 @@ typedef struct server_config {
#define SERVER_INFO_BOGUS 0x01
#define SERVER_INFO_SUPPORT_IXFR 0x02
#define SERVER_INFO_EDNS 0x04
typedef struct server_info {
struct in_addr address;

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_forw.c 4.32 (Berkeley) 3/3/91";
static const char rcsid[] = "$Id: ns_forw.c,v 8.90 2002/02/22 05:12:35 marka Exp $";
static const char rcsid[] = "$Id: ns_forw.c,v 8.91 2002/05/24 03:04:57 marka Exp $";
#endif /* not lint */
/*
@ -612,6 +612,11 @@ nslookup(struct databuf *nsp[], struct qinfo *qp,
qs->nsdata = dp;
qs->forwarder = 0;
qs->noedns = dp->d_noedns;
if (!qs->noedns) {
server_info si = find_server(nsa);
if (si && (si->flags & SERVER_INFO_EDNS) == 0)
qs->noedns = 1;
}
qs->nretry = 0;
/*
* If this A RR has no RTT, initialize its RTT to a
@ -1285,6 +1290,11 @@ nsfwdadd(struct qinfo *qp, struct fwdinfo *fwd) {
qs->nsdata = fwd->fwddata->nsdata;
qs->forwarder = 1;
qs->noedns = fwd->fwddata->nsdata->d_noedns;
if (!qs->noedns) {
server_info si = find_server(qs->ns_addr.sin_addr);
if (si && (si->flags & SERVER_INFO_EDNS) == 0)
qs->noedns = 1;
}
qs->nretry = 0;
n++;
nextfwd:

View File

@ -1,6 +1,6 @@
/*
* from ns.h 4.33 (Berkeley) 8/23/90
* $Id: ns_glob.h,v 8.57 2001/11/12 21:22:26 marka Exp $
* $Id: ns_glob.h,v 8.58 2002/06/05 04:53:50 marka Exp $
*/
/*
@ -336,6 +336,7 @@ DECL char * user_name INIT(NULL);
DECL gid_t group_id;
DECL char * group_name INIT(NULL);
DECL char * chroot_dir INIT(NULL);
DECL char * working_dir INIT(NULL);
DECL int loading INIT(0);

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_ixfr.c,v 8.31 2002/01/02 05:15:20 marka Exp $";
static const char rcsid[] = "$Id: ns_ixfr.c,v 8.32 2002/05/18 01:02:57 marka Exp $";
#endif /* not lint */
/*
@ -201,10 +201,10 @@ sx_send_ixfr(struct qstream *qsp) {
ns_panic(ns_log_update, 1,
"sx_send_ixfr: unable to locate soa");
}
old_soadp = memget(DATASIZE(soa_dp->d_size));
old_soadp = memget(BIND_DATASIZE(soa_dp->d_size));
if (old_soadp == NULL)
ns_panic(ns_log_update, 1, "sx_send_ixfr: out of memory");
memcpy(old_soadp, soa_dp, DATASIZE(soa_dp->d_size));
memcpy(old_soadp, soa_dp, BIND_DATASIZE(soa_dp->d_size));
again:
switch (qsp->xfr.state) {
@ -383,7 +383,7 @@ sx_send_ixfr(struct qstream *qsp) {
qsp->xfr.top.ixfr = NULL;
}
cleanup:
memput(old_soadp, DATASIZE(old_soadp->d_size));
memput(old_soadp, BIND_DATASIZE(old_soadp->d_size));
}

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_lexer.c,v 8.30 2002/04/25 05:27:08 marka Exp $";
static const char rcsid[] = "$Id: ns_lexer.c,v 8.31 2002/05/24 03:05:03 marka Exp $";
#endif /* not lint */
/*
@ -251,6 +251,7 @@ static struct keyword keywords[] = {
{"directory", T_DIRECTORY},
{"dump-file", T_DUMP_FILE},
{"dynamic", T_DYNAMIC},
{"edns", T_EDNS},
{"explicit", T_EXPLICIT},
{"fail", T_FAIL},
{"fake-iquery", T_FAKE_IQUERY},

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_main.c 4.55 (Berkeley) 7/1/91";
static const char rcsid[] = "$Id: ns_main.c,v 8.157 2002/04/13 23:26:16 marka Exp $";
static const char rcsid[] = "$Id: ns_main.c,v 8.160 2002/06/24 07:06:55 marka Exp $";
#endif /* not lint */
/*
@ -99,8 +99,10 @@ char copyright[] =
#ifdef SVR4 /* XXX */
# include <sys/sockio.h>
#else
#ifndef __hpux
# include <sys/mbuf.h>
#endif
#endif
#include <netinet/in.h>
#include <net/route.h>
@ -174,7 +176,7 @@ static u_int16_t nsid_c1, nsid_c2, nsid_c3;
static u_int16_t nsid_state2;
static int nsid_algorithm;
static int needs = 0, needs_exit = 0;
static int needs = 0, needs_exit = 0, needs_restart = 0;
static handler handlers[main_need_num];
static void savedg_waitfunc(evContext, void*, const void*);
static void need_waitfunc(evContext, void *, const void *);
@ -309,14 +311,7 @@ main(int argc, char *argv[]) {
break;
case 'w':
if (chdir(optarg) < 0) {
syslog(LOG_CRIT, bad_directory, optarg,
strerror(errno));
fprintf(stderr, bad_directory, optarg,
strerror(errno));
fputc('\n', stderr);
exit(1);
}
working_dir = savestr(optarg, 1);
break;
#ifdef QRYLOG
case 'q':
@ -434,6 +429,19 @@ main(int argc, char *argv[]) {
chroot_dir = freestr(chroot_dir);
#endif
}
/*
* Set working directory.
*/
if (working_dir != NULL) {
if (chdir(working_dir) < 0) {
syslog(LOG_CRIT, bad_directory, working_dir,
strerror(errno));
fprintf(stderr, bad_directory, working_dir,
strerror(errno));
fputc('\n', stderr);
exit(1);
}
}
/* Establish global event context. */
evCreate(&ev);
@ -550,7 +558,10 @@ main(int argc, char *argv[]) {
else
INSIST_ERR(errno == EINTR);
}
ns_info(ns_log_default, "named shutting down");
if (needs_restart)
ns_info(ns_log_default, "named restarting");
else
ns_info(ns_log_default, "named shutting down");
#ifdef BIND_UPDATE
dynamic_about_to_exit();
#endif
@ -563,8 +574,11 @@ main(int argc, char *argv[]) {
else
shutdown_configuration();
/* Cleanup for system-dependent stuff */
custom_shutdown();
if (needs_restart)
execvp(saved_argv[0], saved_argv);
else
/* Cleanup for system-dependent stuff */
custom_shutdown();
return (0);
}
@ -2746,6 +2760,9 @@ deallocate_everything(void) {
if (chroot_dir != NULL)
freestr(chroot_dir);
chroot_dir = NULL;
if (working_dir != NULL)
freestr(working_dir);
working_dir = NULL;
if (nsid_pool != NULL)
memput(nsid_pool, 0x10000 * (sizeof(u_int16_t)));
nsid_pool = NULL;
@ -2764,19 +2781,8 @@ deallocate_everything(void) {
static void
ns_restart(void) {
ns_info(ns_log_default, "named restarting");
#ifdef BIND_UPDATE
dynamic_about_to_exit();
#endif
if (server_options && server_options->pid_filename)
(void)unlink(server_options->pid_filename);
ns_logstats(ev, NULL, evNowTime(), evConsTime(0, 0));
if (NS_OPTION_P(OPTION_DEALLOC_ON_EXIT))
deallocate_everything();
else
shutdown_configuration();
execvp(saved_argv[0], saved_argv);
abort();
needs_restart = 1;
needs_exit = 1;
}
static void

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_maint.c 4.39 (Berkeley) 3/2/91";
static const char rcsid[] = "$Id: ns_maint.c,v 8.135 2002/04/25 05:27:10 marka Exp $";
static const char rcsid[] = "$Id: ns_maint.c,v 8.136 2002/06/26 03:27:20 marka Exp $";
#endif /* not lint */
/*
@ -1681,6 +1681,17 @@ endxfer() {
sched_zone_maint(zp);
break;
case XFER_REFUSED:
if (!(zp->z_flags & Z_SYSLOGGED)) {
zp->z_flags |= Z_SYSLOGGED;
ns_error(ns_log_xfer_in,
"zoneref: Masters for slave zone \"%s\" REFUSED transfer",
zp->z_origin);
}
ns_retrytime(zp, tt.tv_sec);
sched_zone_maint(zp);
break;
default:
if (!(zp->z_flags & Z_SYSLOGGED)) {
zp->z_flags |= Z_SYSLOGGED;

View File

@ -1,6 +1,6 @@
%{
#if !defined(lint) && !defined(SABER)
static char rcsid[] = "$Id: ns_parser.y,v 8.79 2002/04/25 05:27:13 marka Exp $";
static char rcsid[] = "$Id: ns_parser.y,v 8.80 2002/05/24 03:05:01 marka Exp $";
#endif /* not lint */
/*
@ -191,6 +191,7 @@ int yyparse();
%token T_TRANSFERS
%token T_KEYS
%token T_SUPPORT_IXFR
%token T_EDNS
/* Items used for "zone" statements: */
%token T_ZONE
@ -1268,6 +1269,10 @@ server_info: T_BOGUS yea_or_nay
set_server_transfer_format(current_server, $2);
}
| T_KEYS '{' key_list '}'
| T_EDNS yea_or_nay
{
set_server_option(current_server, SERVER_INFO_EDNS, $2);
}
| error
;

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_req.c 4.47 (Berkeley) 7/1/91";
static const char rcsid[] = "$Id: ns_req.c,v 8.168 2002/04/30 03:43:52 marka Exp $";
static const char rcsid[] = "$Id: ns_req.c,v 8.169 2002/05/12 23:41:52 marka Exp $";
#endif /* not lint */
/*
@ -560,6 +560,8 @@ ns_req(u_char *msg, int msglen, int buflen, struct qstream *qsp,
hp->arcount = htons(0);
cp = msg + HFIXEDSZ;
cp += ns_skiprr(cp, msg + msglen, ns_s_qd, ntohs(hp->qdcount));
ns_name_rollback(cp, (const u_char **)dnptrs,
(const u_char **)dnptrs_end);
if (opt > 0) {
n = ns_add_opt(msg, cp, buflen_orig, 0,
rcode, EDNS_MESSAGE_SZ, 0, NULL, 0);

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_resp.c 4.65 (Berkeley) 3/3/91";
static const char rcsid[] = "$Id: ns_resp.c,v 8.176 2002/04/17 07:10:10 marka Exp $";
static const char rcsid[] = "$Id: ns_resp.c,v 8.178 2002/06/27 03:09:19 marka Exp $";
#endif /* not lint */
/*
@ -288,7 +288,6 @@ ns_resp(u_char *msg, int msglen, struct sockaddr_in from, struct qstream *qsp)
struct namebuf *np;
struct fwdinfo *fwd;
struct databuf *dp;
int forcecmsg = 0;
char *tname = NULL;
int sendto_errno = 0;
int has_tsig, oldqlen = 0;
@ -298,6 +297,7 @@ ns_resp(u_char *msg, int msglen, struct sockaddr_in from, struct qstream *qsp)
u_char sig[TSIG_SIG_SIZE];
time_t tsig_time;
DST_KEY *key;
int expect_cname;
nameserIncr(from.sin_addr, nssRcvdR);
nsp[0] = NULL;
@ -924,6 +924,7 @@ ns_resp(u_char *msg, int msglen, struct sockaddr_in from, struct qstream *qsp)
} else
flushset = NULL;
expect_cname = 1;
for (i = 0; i < count; i++) {
struct databuf *dp;
int type;
@ -955,6 +956,19 @@ ns_resp(u_char *msg, int msglen, struct sockaddr_in from, struct qstream *qsp)
type = dp->d_type;
if (i < ancount) {
/* Answer section. */
/*
* Check for attempts to overflow the buffer in
* getnameanswer.
*/
if (type == ns_t_cname && !expect_cname) {
ns_warning(ns_log_security,
"late CNAME in answer section for %s %s from %s",
*qname ? qname : ".", p_type(qtype),
sin_ntoa(from));
} else if (type != ns_t_cname && type != ns_t_dname &&
type != ns_t_sig)
expect_cname = 0;
if (externalcname || ns_samename(name, aname) != 1) {
if (!externalcname)
ns_info(ns_log_resp_checks,
@ -1220,12 +1234,11 @@ ns_resp(u_char *msg, int msglen, struct sockaddr_in from, struct qstream *qsp)
cache_n_resp(msg, msglen, from, qp->q_name,
qp->q_class, qp->q_type);
if (!qp->q_cmsglen) {
if (!qp->q_cmsglen && validanswer) {
ns_debug(ns_log_default, 3,
"resp: leaving NO: auth = %d", hp->aa);
goto return_msg;
}
forcecmsg = 1;
}
/*

View File

@ -1,6 +1,6 @@
#if !defined(lint) && !defined(SABER)
static const char sccsid[] = "@(#)ns_main.c 4.55 (Berkeley) 7/1/91";
static const char rcsid[] = "$Id: ns_signal.c,v 8.14 2001/06/18 14:43:25 marka Exp $";
static const char rcsid[] = "$Id: ns_signal.c,v 8.15 2002/05/18 01:39:15 marka Exp $";
#endif /* not lint */
/*
@ -87,8 +87,10 @@ static const char rcsid[] = "$Id: ns_signal.c,v 8.14 2001/06/18 14:43:25 marka E
#ifdef SVR4 /* XXX */
# include <sys/sockio.h>
#else
#ifndef __hpux
# include <sys/mbuf.h>
#endif
#endif
#include <netinet/in.h>
#include <net/route.h>

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_update.c,v 8.103 2002/01/03 00:25:02 marka Exp $";
static const char rcsid[] = "$Id: ns_update.c,v 8.104 2002/05/18 01:02:59 marka Exp $";
#endif /* not lint */
/*
@ -3010,9 +3010,9 @@ incr_serial(struct zoneinfo *zp) {
return (-1);
dp = findzonesoa(zp);
if (dp) {
olddp = memget(DATASIZE(dp->d_size));
olddp = memget(BIND_DATASIZE(dp->d_size));
if (olddp != NULL) {
memcpy(olddp, dp, DATASIZE(dp->d_size));
memcpy(olddp, dp, BIND_DATASIZE(dp->d_size));
cp = findsoaserial(olddp->d_data);
PUTLONG(old_serial, cp);
fprintf(ifp, "update: {delete} %s. %u %s %s ",
@ -3021,7 +3021,7 @@ incr_serial(struct zoneinfo *zp) {
p_type(dp->d_type));
(void) rdata_dump(olddp, ifp);
fprintf(ifp, "\n");
memput(olddp, DATASIZE(dp->d_size));
memput(olddp, BIND_DATASIZE(dp->d_size));
}
fprintf(ifp, "update: {add} %s. %u %s %s ",
zp->z_origin, dp->d_ttl,

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ns_xfr.c,v 8.68 2002/04/11 05:19:06 marka Exp $";
static const char rcsid[] = "$Id: ns_xfr.c,v 8.69 2002/06/05 03:53:49 marka Exp $";
#endif /* not lint */
/*
@ -82,15 +82,21 @@ ns_xfr(struct qstream *qsp, struct namebuf *znp,
ns_deltalist *changes;
switch (type) {
case ns_t_axfr: /*FALLTHROUGH*/
case ns_t_ixfr:
ns_info(ns_log_xfer_out,
"zone transfer (%s) of \"%s\" (%s) to %s serial %u -> %u",
p_type(type), zones[zone].z_origin, p_class(class),
sin_ntoa(qsp->s_from), serial_ixfr,
zones[zone].z_serial);
break;
case ns_t_axfr: /*FALLTHROUGH*/
#ifdef BIND_ZXFR
case ns_t_zxfr:
#endif
ns_info(ns_log_xfer_out,
"zone transfer (%s) of \"%s\" (%s) to %s",
"zone transfer (%s) of \"%s\" (%s) to %s serial %u",
p_type(type), zones[zone].z_origin, p_class(class),
sin_ntoa(qsp->s_from));
sin_ntoa(qsp->s_from), zones[zone].z_serial);
break;
default:
ns_warning(ns_log_xfer_out,

View File

@ -1,5 +1,5 @@
#if !defined(lint) && !defined(SABER)
static const char rcsid[] = "$Id: ndc.c,v 1.21 2001/12/19 23:16:23 marka Exp $";
static const char rcsid[] = "$Id: ndc.c,v 1.22 2002/06/24 07:28:55 marka Exp $";
#endif /* not lint */
/*
@ -250,6 +250,179 @@ slashhelp(void) {
"toggle silence (suppresses nonfatal errors)");
}
struct argv {
int argc;
char **argv;
int error;
};
static char hexdigits[] = "0123456789abcdef";
static void
getargs_closure(void *arg, const char *msg, int flags) {
struct argv *argv = arg;
int len;
int i;
const char *cp, *cp2;
char *tp, c;
UNUSED(flags);
if (argv->error)
return;
if (argv->argc == -1) {
i = atoi(msg + 4);
if (i < 1) {
argv->error = 1;
return;
}
argv->argc = i;
argv->argv = calloc((i+1), sizeof(char*));
return;
}
len = 0;
cp = msg + 4;
while (*cp != NULL) {
c = *cp;
if (c == '%') {
cp2 = strchr(hexdigits, cp[1]);
if (cp2 == NULL) {
argv->error = 1;
return;
}
c = (cp2-hexdigits) << 4;
cp2 = strchr(hexdigits, cp[2]);
if (cp2 == NULL) {
argv->error = 1;
return;
}
c += (cp2-hexdigits);
cp += 2;
}
if (!isalnum((unsigned)c)) {
switch (c) {
case '+': case '-': case '=': case '/': case '.':
break;
default:
len++;
}
}
len++;
cp++;
}
i = 0;
while (argv->argv[i] != NULL)
i++;
if (i >= argv->argc) {
argv->error = 1;
return;
}
argv->argv[i] = malloc(len + 1);
if (argv->argv[i] == NULL) {
argv->error = 1;
return;
}
cp = msg + 4;
tp = argv->argv[i];
while (*cp != NULL) {
c = *cp;
if (c == '%') {
cp2 = strchr(hexdigits, cp[1]);
if (cp2 == NULL) {
argv->error = 1;
return;
}
c = (cp2-hexdigits) << 4;
cp2 = strchr(hexdigits, cp[2]);
if (cp2 == NULL) {
argv->error = 1;
return;
}
c += (cp2-hexdigits);
cp += 2;
}
if (!isalnum((unsigned)c)) {
switch (c) {
case '+': case '-': case '=': case '/': case '.':
break;
default:
*tp = '\\';
}
}
*tp++ = c;
cp++;
}
}
static int
get_args(char **restp) {
struct argv argv;
int len, i;
char *rest, *p;
int result = 1;
argv.argc = -1;
argv.argv = NULL;
argv.error = 0;
channel_loop("args", 1, getargs_closure, &argv);
if (argv.error) {
result = 0;
goto err;
}
len = 0;
for (i = 1 ; i < argv.argc && argv.argv[i] != NULL; i++)
len += strlen(argv.argv[i]) + 1;
rest = malloc(len);
if (rest == NULL) {
result = 0;
goto err;
}
p = rest;
for (i = 1 ; i < argv.argc && argv.argv[i] != NULL; i++) {
strcpy(p, argv.argv[i]);
p += strlen(argv.argv[i]);
*p++ = ' ';
}
if (p != rest)
p[-1] = '\0';
*restp = rest;
err:
if (argv.argv) {
for (i = 0 ; i < argv.argc && argv.argv[i] != NULL; i++)
free(argv.argv[i]);
free(argv.argv);
}
return (result);
}
static void
exec_closure(void *arg, const char *msg, int flags) {
int *result = arg;
UNUSED(flags);
if (atoi(msg) == 250)
*result = 1;
}
static int
try_exec(int local_quiet) {
int good = 0;
pid_t pid;
channel_loop("exec", 1, exec_closure, &good);
if (good) {
sleep(3);
if (!running(0, &pid))
error("name server has not restarted (yet?)");
else if (!local_quiet)
result("new pid is %ld", (long)pid);
}
return (good);
}
static int
builtincmd(void) {
static const char spaces[] = " \t";
@ -257,14 +430,18 @@ builtincmd(void) {
pid_t pid;
int save_quiet = quiet;
int len;
int freerest = 0;
quiet = 1;
len = strcspn(cmd, spaces);
rest = cmd + len;
if (*rest != '\0') {
rest++;
if (*rest != '\0')
rest += strspn(rest, spaces);
if (*rest == '\0' && !strncasecmp(cmd, "restart", len)) {
if (try_exec(save_quiet))
return (1);
freerest = get_args(&rest);
}
syscmd = malloc(strlen(named_path) + sizeof " " + strlen(rest));
if (syscmd == NULL)
@ -274,6 +451,8 @@ builtincmd(void) {
strcat(syscmd, " ");
strcat(syscmd, rest);
}
if (freerest)
free(rest);
if (strncasecmp(cmd, "start", len) == 0) {
if (running(debug, &pid))
error("name server already running? (pid %ld)",
@ -417,6 +596,7 @@ channel_loop(const char *cmdtext, int show, closure cl, void *ua) {
a.cl = cl;
a.ua = ua;
logger_show = show;
trace("command '%s'", cmdtext);
ctl = ctl_client(ev, client_addr, impute_addrlen(client_addr),
(struct sockaddr *)&server,
impute_addrlen((struct sockaddr *)&server),

View File

@ -13,7 +13,7 @@
## ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
## SOFTWARE.
# $Id: Makefile,v 8.27 2001/01/31 08:44:43 marka Exp $
# $Id: Makefile,v 8.28 2002/05/21 00:44:59 marka Exp $
DESTDIR=
CC= cc
@ -31,7 +31,8 @@ A=a
O=o
EXE=
LEX = lex -I
SYSLIBS = -ll -lutil
SYSLIBS =-lutil
LIBL=-ll
DESTBIN = /usr/local/bin
DESTSBIN = /usr/local/sbin
DESTEXEC = /usr/local/libexec
@ -56,7 +57,7 @@ all: ${PROG}${EXE}
${PROG}${EXE}: ${OBJS} ${LIBBIND} Makefile
${CC} ${CDEBUG} ${LDFLAGS} ${BOUNDS} -o ${PROG}${EXE} ${OBJS} \
${LIBBIND} ${SYSLIBS}
${LIBBIND} ${LIBL} ${SYSLIBS}
.c.${O}:
${CC} ${CPPFLAGS} ${CFLAGS} ${BOUNDS} -c $*.c

View File

@ -53,7 +53,7 @@
#ifndef lint
static const char sccsid[] = "@(#)send.c 5.18 (Berkeley) 3/2/91";
static const char rcsid[] = "$Id: send.c,v 8.13 2002/04/09 05:55:23 marka Exp $";
static const char rcsid[] = "$Id: send.c,v 8.14 2002/05/10 04:35:09 marka Exp $";
#endif /* not lint */
/*
@ -291,7 +291,7 @@ SendRequest(union res_sockaddr_union *nsAddrPtr, const u_char *buf,
}
#else /* BSD */
if (sendto(s, (const char *)buf, buflen, 0,
(struct sockaddr *) &nsAddrPtr,
(struct sockaddr *) nsAddrPtr,
clen) != buflen) {
if (res.options & RES_DEBUG)
perror("sendto");

View File

@ -13,6 +13,7 @@
<PRE>
server <VAR><A HREF="docdef.html">ip_addr</A></VAR> {
[ edns <VAR><A HREF="docdef.html">yes_or_no</A></VAR>; ]
[ bogus <VAR><A HREF="docdef.html">yes_or_no</A></VAR>; ]
[ support-ixfr <VAR><A HREF="docdef.html">yes_or_no</A></VAR>; ]
[ transfers <VAR><A HREF="docdef.html">number</A></VAR>; ]
@ -28,6 +29,10 @@ server <VAR><A HREF="docdef.html">ip_addr</A></VAR> {
<P>The server statement defines the characteristics to be
associated with a remote name server.</P>
<P>If you discover that a server does not support EDNS you can prevent
named making EDNS queries to it by specifying <CODE>edns no;</CODE>.
The default value of <CODE>edns</CODE> is <CODE>yes</CODE>.
<P>If you discover that a server is giving out bad data, marking it as
<CODE>bogus</CODE> will prevent further queries to it. The default value of
<CODE>bogus</CODE> is <CODE>no</CODE>. Marking a server as <CODE>bogus</CODE>
@ -69,7 +74,7 @@ required to be signed by this key.
<HR>
<ADDRESS>
Last Updated: $Id: server.html,v 1.12 2001/08/10 05:12:29 marka Exp $
Last Updated: $Id: server.html,v 1.13 2002/05/24 03:04:51 marka Exp $
</ADDRESS>
</BODY>
</HTML>

View File

@ -1,4 +1,4 @@
.\" $Id: dnsquery.1,v 8.4 2001/08/08 07:49:58 marka Exp $
.\" $Id: dnsquery.1,v 8.5 2002/06/18 02:04:54 marka Exp $
.\"
.\"Copyright (c) 1995,1996,1999 by Internet Software Consortium
.\"
@ -49,8 +49,10 @@ are treated without case-sensitivity.
.Bl -tag -width Fl
.It Fl n Ar nameserver
The nameserver to be used in the query. Nameservers can appear as either
Internet addresses of the form
.Ar w.x.y.z
Internet addresses of the form
.Ar ( w.x.y.z
or
.Ar xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx )
or can appear as domain names.
(Default: as specified in
.Pa /etc/resolv.conf . )

View File

@ -1895,6 +1895,7 @@ Any number of trusted keys can be specified.
.Ss Syntax
.Bd -literal
server \fIip_addr\fR {
[ edns \fIyes_or_no\fR; ]
[ bogus \fIyes_or_no\fR; ]
[ support-ixfr \fIyes_or_no\fR; ]
[ transfers \fInumber\fR; ]
@ -1906,6 +1907,15 @@ server \fIip_addr\fR {
The server statement defines the characteristics to be
associated with a remote name server.
.Pp
If you discover that a server does not support EDNS you can prevent
named making EDNS queries to it by specifying
.Ic edns
.Ic no; .
The default value of
.Ic edns
is
.Ic yes .
.Pp
If you discover that a server is giving out bad data, marking it as
.Ic bogus
will prevent further queries to it. The default value of

View File

@ -0,0 +1,105 @@
Message-Id: <200005230246.WAA03750@hrothgar.gw.com>
To: ...
Subject: Notes on RFC-2317
Date: Mon, 22 May 2000 22:46:55 -0400
From: Kimmo Suominen <kim@tac.nyc.ny.us>
Hi!
I wrote down some notes on RFC-2317. I've had discussions with all of
you regarding classless IN-ADDR.ARPA delegations, and I would very much
appreciate any comments you may have. Please feel free to forward this
to other parties as you see necessary or appropriate.
The goal of these notes is to try and clarify the reasoning behind the
recommendations I've been making on implementing RFC-2317 delegations.
In particular the following issues keep coming up with again and again
with each vendor:
- why use "-" instead of "/"
- why use particular NS records
- why delegate within IN-ADDR.ARPA
I am hoping that the these notes could eventually be used to convince
ISPs to provide an efficient and smooth implementation of RFC-2317 with
the least amount of headache for the end-user.
Regards,
+ Kim
NOTES ON IMPLEMENTING CLASSLESS IN-ADDR.ARPA DELEGATION PER RFC-2317
1. Selecting the CNAME target zone
RFC-2317 shows an example case where the target zone is a delegated
sub-zone of the IN-ADDR.ARPA zone for the natural class C network.
This will allow for the NS records for the zone can be independently
selected (see benefits described below). An example of such a zone
would be 0-28.150.80.204.IN-ADDR.ARPA.
Now pay careful attention to the last paragraph of RFC-2317. There
are broken resolver implementations that apply the "valid host name"
restrictions on the CNAME target (it should only be applied to the
PTR target name). To avoid problems with such implementations it
is best to use a character that is allowed in a hostname. I prefer
using a hyphen, as I did in the example above.
Some ISPs may at first refuse to delegate these zones (without any
explanation). Approach such ISPs with the reasoning in here first,
but if that fails consider using your "forward" zone as a fallback.
There is nothing magic about the IN-ADDR.ARPA zone for RFC-2317
delegations. You will have to sacrifice the optimization provided
by a correct IN-ADDR.ARPA delegation, but you will still retain
the ease of local administration for all name changes.
I recommend using a dedicated subdomain for the PTR records, e.g. if
your "forward" domain is "HOME.GW.COM" use "REV.HOME.GW.COM" for the
PTR records.
2. Selecting the NS records
The NS records for the delegated zone should include all the NS
records of the parent zone, in addition to any NS records pointing
to the public name servers the delegate may want to use. Having the
name servers of the parent zone secondary the delegated zone allows
them to have the necessary authoritative data to return the CNAME
target in the additional records of a response to a PTR record query
(minimizing the number of queries needed to resolve an address).
This can be achieved using any zone (i.e. even a subdomain of your
"forward" domain), of course. However, having the ISP delegate an
IN-ADDR.ARPA zone for your PTR records rather than you delegating a
zone to your ISP maintains the logical "owner" and "delegate" roles.
If the primary server for the delegated zone is not permanently on
the Internet (e.g. a dial-on-demand connection) then you would not
want to advertise it in the NS records. It would just be a stealth
server which the advertised secondaries poll for updates.
3. Example delegation
To delegate our example zone 0-28.150.80.204.IN-ADDR.ARPA first look
at the NS records of the parent zone 150.80.204.IN-ADDR.ARPA. Let's
say they are the following:
$ORIGIN 150.80.204.IN-ADDR.ARPA.
@ IN NS GRENDEL.GW.COM.
IN NS PYRY.GW.COM.
To delegate 204.80.150.0/28 to SRV.HOME.GW.COM you would then insert
these records in the parent zone data:
$ORIGIN 150.80.204.IN-ADDR.ARPA.
0-28 IN NS SRV.HOME.GW.COM.
IN NS GRENDEL.GW.COM.
IN NS PYRY.GW.COM.
$GENERATE 0-15 $ IN CNAME $.0-28.150.80.204.IN-ADDR.ARPA.
The necessary modifications to /etc/named.conf will be left as an
exercise to the reader.
Kimmo Suominen
Global Wire Oy

View File

@ -32,7 +32,7 @@
/*
* from nameser.h 8.1 (Berkeley) 6/2/93
* $Id: nameser_compat.h,v 8.13 2001/09/24 02:20:25 marka Exp $
* $Id: nameser_compat.h,v 8.14 2002/05/18 01:39:11 marka Exp $
*/
#ifndef _ARPA_NAMESER_COMPAT_
@ -64,7 +64,7 @@
defined(apollo) || defined(__convex__) || defined(_CRAY) || \
defined(__hppa) || defined(__hp9000) || \
defined(__hp9000s300) || defined(__hp9000s700) || \
defined(__hp3000s900) || defined(MPE) || \
defined(__hp3000s900) || defined(__hpux) || defined(MPE) || \
defined (BIT_ZERO_ON_LEFT) || defined(m68k) || \
(defined(__Lynx__) && \
(defined(__68k__) || defined(__sparc__) || defined(__powerpc__)))

View File

@ -24,11 +24,13 @@
do { (list).head = NULL; (list).tail = NULL; } while (0)
#define LINK(type) struct { type *prev, *next; }
#define INIT_LINK(elt, link) \
#define INIT_LINK_TYPE(elt, link, type) \
do { \
(elt)->link.prev = (void *)(-1); \
(elt)->link.next = (void *)(-1); \
(elt)->link.prev = (type *)(-1); \
(elt)->link.next = (type *)(-1); \
} while (0)
#define INIT_LINK(elt, link) \
INIT_LINK_TYPE(elt, link, void)
#define LINKED(elt, link) ((void *)((elt)->link.prev) != (void *)(-1))
#define HEAD(list) ((list).head)
@ -59,7 +61,7 @@
(list).tail = (elt); \
} while (0)
#define UNLINK(list, elt, link) \
#define UNLINK_TYPE(list, elt, link, type) \
do { \
INSIST(LINKED(elt, link));\
if ((elt)->link.next != NULL) \
@ -70,8 +72,10 @@
(elt)->link.prev->link.next = (elt)->link.next; \
else \
(list).head = (elt)->link.next; \
INIT_LINK(elt, link); \
INIT_LINK_TYPE(elt, link, type); \
} while (0)
#define UNLINK(list, elt, link) \
UNLINK_TYPE(list, elt, link, void)
#define PREV(elt, link) ((elt)->link.prev)
#define NEXT(elt, link) ((elt)->link.next)

View File

@ -50,7 +50,7 @@
/*
* @(#)resolv.h 8.1 (Berkeley) 6/2/93
* $Id: resolv.h,v 8.45 2002/04/12 06:27:48 marka Exp $
* $Id: resolv.h,v 8.48 2002/05/31 06:05:29 marka Exp $
*/
#ifndef _RESOLV_H_
@ -156,7 +156,11 @@ struct __res_state_ext;
struct __res_state {
int retrans; /* retransmition time interval */
int retry; /* number of times to retransmit */
#ifdef sun
u_int options; /* option flags - see below. */
#else
u_long options; /* option flags - see below. */
#endif
int nscount; /* number of name servers */
struct sockaddr_in
nsaddr_list[MAXNS]; /* address of name server */
@ -164,7 +168,11 @@ struct __res_state {
u_short id; /* current message id */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
char defdname[256]; /* default domain (deprecated) */
#ifdef sun
u_int pfcode; /* RES_PRF_ flags - see below. */
#else
u_long pfcode; /* RES_PRF_ flags - see below. */
#endif
unsigned ndots:4; /* threshold for initial abs. query */
unsigned nsort:4; /* number of elements in sort_list[] */
char unused[3];
@ -177,9 +185,10 @@ struct __res_state {
int res_h_errno; /* last one set for this context */
int _vcsock; /* PRIVATE: for res_send VC i/o */
u_int _flags; /* PRIVATE: see below */
u_int _pad; /* make _u 64 bit aligned */
union {
/* On an 32-bit arch this means 512b total. */
char pad[72 - 3*sizeof (int) - 2*sizeof (void *)];
char pad[72 - 4*sizeof (int) - 2*sizeof (void *)];
struct {
u_int16_t nscount;
u_int16_t nstimes[MAXNS]; /* ms. */
@ -245,6 +254,7 @@ union res_sockaddr_union {
#define RES_USE_DNAME 0x10000000 /* use DNAME */
#define RES_USE_A6 0x20000000 /* use A6 */
#define RES_USE_EDNS0 0x40000000 /* use EDNS0 if configured */
#define RES_NO_NIBBLE2 0x80000000 /* disable alternate nibble lookup */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
@ -460,6 +470,7 @@ const char * res_protocolname __P((int num));
void res_destroyprotolist __P((void));
void res_buildprotolist __P((void));
const char * res_get_nibblesuffix __P((res_state));
const char * res_get_nibblesuffix2 __P((res_state));
const char * res_get_bitstringsuffix __P((res_state));
void res_ndestroy __P((res_state));
u_int16_t res_nametoclass __P((const char *buf, int *success));

View File

@ -52,7 +52,7 @@
/* BIND Id: gethnamaddr.c,v 8.15 1996/05/22 04:56:30 vixie Exp $ */
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: dns_ho.c,v 1.35 2002/05/08 01:49:27 marka Exp $";
static const char rcsid[] = "$Id: dns_ho.c,v 1.39 2002/06/27 03:56:32 marka Exp $";
#endif /* LIBC_SCCS and not lint */
/* Imports. */
@ -74,6 +74,7 @@ static const char rcsid[] = "$Id: dns_ho.c,v 1.35 2002/05/08 01:49:27 marka Exp
#include <resolv.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <isc/memcluster.h>
#include <irs.h>
@ -161,7 +162,7 @@ static struct addrinfo * ho_addrinfo(struct irs_ho *this, const char *name,
const struct addrinfo *pai);
static void map_v4v6_hostent(struct hostent *hp, char **bp,
int *len);
char *ep);
static void addrsort(res_state, char **, int);
static struct hostent * gethostans(struct irs_ho *this,
const u_char *ansbuf, int anslen,
@ -404,15 +405,12 @@ ho_byaddr(struct irs_ho *this, const void *addr, int len, int af)
q->answer = q->qbuf.buf;
q->anslen = sizeof(q->qbuf);
q->next = q2;
if ((pvt->res->options & RES_NO_BITSTRING) != 0)
q->action = RESTGT_IGNORE;
else
q->action = RESTGT_DOALWAYS;
q->action = RESTGT_DOALWAYS;
q2->qclass = C_IN;
q2->qtype = T_PTR;
q2->answer = q2->qbuf.buf;
q2->anslen = sizeof(q2->qbuf);
if ((pvt->res->options & RES_NO_NIBBLE) != 0)
if ((pvt->res->options & RES_NO_NIBBLE2) != 0)
q2->action = RESTGT_IGNORE;
else
q2->action = RESTGT_AFTERFAILURE;
@ -441,11 +439,12 @@ ho_byaddr(struct irs_ho *this, const void *addr, int len, int af)
case AF_INET6:
if (q->action != RESTGT_IGNORE) {
qp = q->qname;
qp += SPRINTF((qp, "\\[x"));
for (n = 0; n < IN6ADDRSZ; n++)
qp += SPRINTF((qp, "%02x", uaddr[n]));
SPRINTF((qp, "/128].%s",
res_get_bitstringsuffix(pvt->res)));
for (n = IN6ADDRSZ - 1; n >= 0; n--) {
qp += SPRINTF((qp, "%x.%x.",
uaddr[n] & 0xf,
(uaddr[n] >> 4) & 0xf));
}
strcpy(qp, res_get_nibblesuffix(pvt->res));
}
if (q2->action != RESTGT_IGNORE) {
qp = q2->qname;
@ -454,7 +453,7 @@ ho_byaddr(struct irs_ho *this, const void *addr, int len, int af)
uaddr[n] & 0xf,
(uaddr[n] >> 4) & 0xf));
}
strcpy(qp, res_get_nibblesuffix(pvt->res));
strcpy(qp, res_get_nibblesuffix2(pvt->res));
}
break;
default:
@ -1081,7 +1080,7 @@ gethostans(struct irs_ho *this,
struct addrinfo **ret_aip, const struct addrinfo *pai)
{
struct pvt *pvt = (struct pvt *)this->private;
int type, class, buflen, ancount, qdcount, n, haveanswer, had_error;
int type, class, ancount, qdcount, n, haveanswer, had_error;
int error = NETDB_SUCCESS, arcount;
int (*name_ok)(const char *);
const HEADER *hp;
@ -1090,7 +1089,7 @@ gethostans(struct irs_ho *this,
const u_char *cp;
const char *tname;
const char *hname;
char *bp, **ap, **hap;
char *bp, *ep, **ap, **hap;
char tbuf[MAXDNAME+1];
struct addrinfo sentinel, *cur, ai;
const u_char *arp = NULL;
@ -1133,13 +1132,13 @@ gethostans(struct irs_ho *this,
qdcount = ntohs(hp->qdcount);
arcount = ntohs(hp->arcount);
bp = pvt->hostbuf;
buflen = sizeof pvt->hostbuf;
ep = pvt->hostbuf + sizeof(pvt->hostbuf);
cp = ansbuf + HFIXEDSZ;
if (qdcount != 1) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
}
n = dn_expand(ansbuf, eom, cp, bp, buflen);
n = dn_expand(ansbuf, eom, cp, bp, ep - bp);
if (n < 0 || !maybe_ok(pvt->res, bp, name_ok)) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
@ -1163,7 +1162,6 @@ gethostans(struct irs_ho *this,
pvt->host.h_name = bp;
hname = bp;
bp += n;
buflen -= n;
/* The qname can be abbreviated, but hname is now absolute. */
qname = pvt->host.h_name;
}
@ -1176,7 +1174,7 @@ gethostans(struct irs_ho *this,
haveanswer = 0;
had_error = 0;
while (ancount-- > 0 && cp < eom && !had_error) {
n = dn_expand(ansbuf, eom, cp, bp, buflen);
n = dn_expand(ansbuf, eom, cp, bp, ep - bp);
if (n < 0 || !maybe_ok(pvt->res, bp, name_ok)) {
had_error++;
continue;
@ -1197,6 +1195,15 @@ gethostans(struct irs_ho *this,
eor = cp + n;
if ((qtype == T_A || qtype == T_AAAA || qtype == ns_t_a6 ||
qtype == T_ANY) && type == T_CNAME) {
if (haveanswer) {
int level = LOG_CRIT;
#ifdef LOG_SECURITY
level |= LOG_SECURITY;
#endif
syslog(level,
"gethostans: possible attempt to exploit buffer overflow while looking up %s",
*qname ? qname : ".");
}
n = dn_expand(ansbuf, eor, cp, tbuf, sizeof tbuf);
if (n < 0 || !maybe_ok(pvt->res, tbuf, name_ok)) {
had_error++;
@ -1209,10 +1216,9 @@ gethostans(struct irs_ho *this,
*ap++ = bp;
n = strlen(bp) + 1; /* for the \0 */
bp += n;
buflen -= n;
/* Get canonical name. */
n = strlen(tbuf) + 1; /* for the \0 */
if (n > buflen || n > MAXHOSTNAMELEN) {
if (n > (ep - bp) || n > MAXHOSTNAMELEN) {
had_error++;
continue;
}
@ -1220,7 +1226,6 @@ gethostans(struct irs_ho *this,
pvt->host.h_name = bp;
hname = bp;
bp += n;
buflen -= n;
continue;
}
if (type == ns_t_dname) {
@ -1256,7 +1261,7 @@ gethostans(struct irs_ho *this,
cp += n;
n = strlen(t) + 1; /* for the \0 */
if (n > buflen) {
if (n > (ep - bp)) {
had_error++;
continue;
}
@ -1266,7 +1271,6 @@ gethostans(struct irs_ho *this,
else
hname = bp;
bp += n;
buflen -= n;
continue;
}
@ -1292,14 +1296,13 @@ gethostans(struct irs_ho *this,
}
/* Get canonical name. */
n = strlen(tbuf) + 1; /* for the \0 */
if (n > buflen) {
if (n > (ep - bp)) {
had_error++;
continue;
}
strcpy(bp, tbuf);
tname = bp;
bp += n;
buflen -= n;
continue;
}
if (qtype == T_ANY) {
@ -1323,7 +1326,7 @@ gethostans(struct irs_ho *this,
cp += n;
continue;
}
n = dn_expand(ansbuf, eor, cp, bp, buflen);
n = dn_expand(ansbuf, eor, cp, bp, ep - bp);
if (n < 0 || !maybe_hnok(pvt->res, bp) ||
n >= MAXHOSTNAMELEN) {
had_error++;
@ -1341,7 +1344,6 @@ gethostans(struct irs_ho *this,
if (n != -1) {
n = strlen(bp) + 1; /* for the \0 */
bp += n;
buflen -= n;
}
break;
case ns_t_a6: {
@ -1441,7 +1443,6 @@ gethostans(struct irs_ho *this,
pvt->host.h_name = bp;
hname = bp;
bp += nn;
buflen -= nn;
}
/* Ensure alignment. */
bp = (char *)(((u_long)bp + (sizeof(align) - 1)) &
@ -1495,15 +1496,14 @@ gethostans(struct irs_ho *this,
haveanswer);
if (pvt->host.h_name == NULL) {
n = strlen(qname) + 1; /* for the \0 */
if (n > buflen || n >= MAXHOSTNAMELEN)
if (n > (ep - bp) || n >= MAXHOSTNAMELEN)
goto no_recovery;
strcpy(bp, qname);
pvt->host.h_name = bp;
bp += n;
buflen -= n;
}
if (pvt->res->options & RES_USE_INET6)
map_v4v6_hostent(&pvt->host, &bp, &buflen);
map_v4v6_hostent(&pvt->host, &bp, ep);
RES_SET_H_ERRNO(pvt->res, NETDB_SUCCESS);
return (&pvt->host);
} else {
@ -1577,7 +1577,7 @@ add_hostent(struct pvt *pvt, char *bp, char **hap, struct addrinfo *ai)
}
static void
map_v4v6_hostent(struct hostent *hp, char **bpp, int *lenp) {
map_v4v6_hostent(struct hostent *hp, char **bpp, char *ep) {
char **ap;
if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
@ -1590,17 +1590,15 @@ map_v4v6_hostent(struct hostent *hp, char **bpp, int *lenp) {
if (i != 0)
i = sizeof(align) - i;
if (*lenp < (i + IN6ADDRSZ)) {
if ((ep - *bpp) < (i + IN6ADDRSZ)) {
/* Out of memory. Truncate address list here. */
*ap = NULL;
return;
}
*bpp += i;
*lenp -= i;
map_v4v6_address(*ap, *bpp);
*ap = *bpp;
*bpp += IN6ADDRSZ;
*lenp -= IN6ADDRSZ;
}
}

View File

@ -16,7 +16,7 @@
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: dns_nw.c,v 1.22 2002/02/27 03:50:10 marka Exp $";
static const char rcsid[] = "$Id: dns_nw.c,v 1.23 2002/06/26 07:42:06 marka Exp $";
#endif /* LIBC_SCCS and not lint */
/* Imports. */
@ -299,8 +299,8 @@ get1101answer(struct irs_nw *this,
int af, const char *name, const u_char *addr, int addrlen)
{
struct pvt *pvt = (struct pvt *)this->private;
int type, class, buflen, ancount, qdcount, haveanswer;
char *bp, **ap;
int type, class, ancount, qdcount, haveanswer;
char *bp, *ep, **ap;
u_char *cp, *eom;
HEADER *hp;
@ -332,7 +332,7 @@ get1101answer(struct irs_nw *this,
/* Prepare a return structure. */
bp = pvt->buf;
buflen = sizeof pvt->buf;
ep = pvt->buf + sizeof(pvt->buf);
pvt->net.n_name = NULL;
pvt->net.n_aliases = pvt->ali;
pvt->net.n_addrtype = af;
@ -345,20 +345,19 @@ get1101answer(struct irs_nw *this,
if (name != NULL) {
int n = strlen(name) + 1;
if (n > buflen) {
if (n > (ep - bp)) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
}
pvt->net.n_name = strcpy(bp, name);
bp += n;
buflen -= n;
}
break;
case by_addr:
if (addr != NULL && addrlen != 0) {
int n = addrlen / 8 + ((addrlen % 8) != 0);
if (INADDRSZ > buflen) {
if (INADDRSZ > (ep - bp)) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
}
@ -366,7 +365,6 @@ get1101answer(struct irs_nw *this,
memcpy(bp, addr, n);
pvt->net.n_addr = bp;
bp += INADDRSZ;
buflen -= INADDRSZ;
}
break;
default:
@ -377,7 +375,7 @@ get1101answer(struct irs_nw *this,
ap = pvt->ali;
haveanswer = 0;
while (--ancount >= 0 && cp < eom) {
int n = dn_expand(ansbuf, eom, cp, bp, buflen);
int n = dn_expand(ansbuf, eom, cp, bp, ep - bp);
cp += n; /* Owner */
if (n < 0 || !maybe_dnok(pvt->res, bp) ||
@ -392,7 +390,7 @@ get1101answer(struct irs_nw *this,
if (class == C_IN && type == T_PTR) {
int nn;
nn = dn_expand(ansbuf, eom, cp, bp, buflen);
nn = dn_expand(ansbuf, eom, cp, bp, ep - bp);
if (nn < 0 || !maybe_hnok(pvt->res, bp) || nn != n) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
@ -408,7 +406,6 @@ get1101answer(struct irs_nw *this,
*ap++ = bp;
nn = strlen(bp) + 1;
bp += nn;
buflen -= nn;
haveanswer++;
break;
}
@ -419,7 +416,7 @@ get1101answer(struct irs_nw *this,
sscanf(bp, "%u.%u.%u.%u.in-addr.arpa",
&b1, &b2, &b3, &b4) != 4)
break;
if (buflen < INADDRSZ) {
if ((ep - bp) < INADDRSZ) {
RES_SET_H_ERRNO(pvt->res, NO_RECOVERY);
return (NULL);
}
@ -428,7 +425,6 @@ get1101answer(struct irs_nw *this,
*bp++ = b3;
*bp++ = b2;
*bp++ = b1;
buflen -= INADDRSZ;
pvt->net.n_length = INADDRSZ * 8;
haveanswer++;
}

View File

@ -16,7 +16,7 @@
*/
#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$Id: gethostent.c,v 1.29 2001/05/29 05:48:44 marka Exp $";
static const char rcsid[] = "$Id: gethostent.c,v 1.32 2002/05/27 06:50:55 marka Exp $";
#endif
/* Imports */
@ -458,34 +458,34 @@ freehostent(struct hostent *he) {
* -1 on failure.
*/
static int
scan_interfaces(int *have_v4, int *have_v6) {
#ifndef SIOCGLIFCONF
/* map new to old */
#define SIOCGLIFCONF SIOCGIFCONF
#define lifc_len ifc_len
#define lifc_buf ifc_buf
struct ifconf lifc;
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR) && \
!defined(IRIX_EMUL_IOCTL_SIOCGIFCONF)
#ifdef __hpux
#define lifc_len iflc_len
#define lifc_buf iflc_buf
#define lifc_req iflc_req
#define LIFCONF if_laddrconf
#else
#define SETFAMILYFLAGS
struct lifconf lifc;
#define LIFCONF lifconf
#endif
#ifndef SIOCGLIFADDR
/* map new to old */
#define SIOCGLIFADDR SIOCGIFADDR
#endif
#ifndef SIOCGLIFFLAGS
#define SIOCGLIFFLAGS SIOCGIFFLAGS
#define lifr_addr ifr_addr
#define lifr_name ifr_name
#define lifr_flags ifr_flags
#ifdef __hpux
#define lifr_addr iflr_addr
#define lifr_name iflr_name
#define lifr_dstaddr iflr_dstaddr
#define lifr_flags iflr_flags
#define ss_family sa_family
struct ifreq lifreq;
#define LIFREQ if_laddrreq
#else
struct lifreq lifreq;
#define LIFREQ lifreq
#endif
static int
scan_interfaces6(int *have_v4, int *have_v6) {
struct LIFCONF lifc;
struct LIFREQ lifreq;
struct in_addr in4;
struct in6_addr in6;
char *buf = NULL, *cp, *cplim;
@ -496,7 +496,7 @@ scan_interfaces(int *have_v4, int *have_v6) {
*have_v4 = *have_v6 = 0;
/* Get interface list from system. */
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) == -1)
goto err_ret;
/*
@ -508,20 +508,11 @@ scan_interfaces(int *have_v4, int *have_v6) {
if (buf == NULL)
goto err_ret;
#ifdef SETFAMILYFLAGS
lifc.lifc_family = AF_UNSPEC;
lifc.lifc_family = AF_UNSPEC; /* request all families */
lifc.lifc_flags = 0;
#endif
lifc.lifc_len = bufsiz;
lifc.lifc_buf = buf;
#ifdef IRIX_EMUL_IOCTL_SIOCGIFCONF
/*
* This is a fix for IRIX OS in which the call to ioctl with
* the flag SIOCGIFCONF may not return an entry for all the
* interfaces like most flavors of Unix.
*/
if (emul_ioctl(&lifc) >= 0)
break;
#else
if ((n = ioctl(s, SIOCGLIFCONF, (char *)&lifc)) != -1) {
/*
* Some OS's just return what will fit rather
@ -534,7 +525,6 @@ scan_interfaces(int *have_v4, int *have_v6) {
if (lifc.lifc_len + 2 * sizeof(lifreq) < bufsiz)
break;
}
#endif
if ((n == -1) && errno != EINVAL)
goto err_ret;
@ -620,6 +610,158 @@ scan_interfaces(int *have_v4, int *have_v6) {
return (-1);
}
#endif
static int
scan_interfaces(int *have_v4, int *have_v6) {
struct ifconf ifc;
union {
char _pad[256]; /* leave space for IPv6 addresses */
struct ifreq ifreq;
} u;
struct in_addr in4;
struct in6_addr in6;
char *buf = NULL, *cp, *cplim;
static unsigned int bufsiz = 4095;
int s, n;
size_t cpsize;
#if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR) && \
!defined(IRIX_EMUL_IOCTL_SIOCGIFCONF)
/*
* Try to scan the interfaces using IPv6 ioctls().
*/
if (!scan_interfaces6(have_v4, have_v6))
return (0);
#endif
/* Set to zero. Used as loop terminators below. */
*have_v4 = *have_v6 = 0;
/* Get interface list from system. */
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
goto err_ret;
/*
* Grow buffer until large enough to contain all interface
* descriptions.
*/
for (;;) {
buf = memget(bufsiz);
if (buf == NULL)
goto err_ret;
ifc.ifc_len = bufsiz;
ifc.ifc_buf = buf;
#ifdef IRIX_EMUL_IOCTL_SIOCGIFCONF
/*
* This is a fix for IRIX OS in which the call to ioctl with
* the flag SIOCGIFCONF may not return an entry for all the
* interfaces like most flavors of Unix.
*/
if (emul_ioctl(&ifc) >= 0)
break;
#else
if ((n = ioctl(s, SIOCGIFCONF, (char *)&ifc)) != -1) {
/*
* Some OS's just return what will fit rather
* than set EINVAL if the buffer is too small
* to fit all the interfaces in. If
* ifc.ifc_len is too near to the end of the
* buffer we will grow it just in case and
* retry.
*/
if (ifc.ifc_len + 2 * sizeof(u.ifreq) < bufsiz)
break;
}
#endif
if ((n == -1) && errno != EINVAL)
goto err_ret;
if (bufsiz > 1000000)
goto err_ret;
memput(buf, bufsiz);
bufsiz += 4096;
}
/* Parse system's interface list. */
cplim = buf + ifc.ifc_len; /* skip over if's with big ifr_addr's */
for (cp = buf;
(*have_v4 == 0 || *have_v6 == 0) && cp < cplim;
cp += cpsize) {
memcpy(&u.ifreq, cp, sizeof u.ifreq);
#ifdef HAVE_SA_LEN
#ifdef FIX_ZERO_SA_LEN
if (u.ifreq.ifr_addr.sa_len == 0)
u.ifreq.ifr_addr.sa_len = 16;
#endif
#ifdef HAVE_MINIMUM_IFREQ
cpsize = sizeof u.ifreq;
if (u.ifreq.ifr_addr.sa_len > sizeof (struct sockaddr))
cpsize += (int)u.ifreq.ifr_addr.sa_len -
(int)(sizeof (struct sockaddr));
#else
cpsize = sizeof u.ifreq.ifr_name + u.ifreq.ifr_addr.sa_len;
#endif /* HAVE_MINIMUM_IFREQ */
if (cpsize > sizeof u.ifreq && cpsize <= sizeof u)
memcpy(&u.ifreq, cp, cpsize);
#elif defined SIOCGIFCONF_ADDR
cpsize = sizeof u.ifreq;
#else
cpsize = sizeof u.ifreq.ifr_name;
/* XXX maybe this should be a hard error? */
if (ioctl(s, SIOCGIFADDR, (char *)&u.ifreq) < 0)
continue;
#endif
switch (u.ifreq.ifr_addr.sa_family) {
case AF_INET:
if (*have_v4 == 0) {
memcpy(&in4,
&((struct sockaddr_in *)
&u.ifreq.ifr_addr)->sin_addr,
sizeof in4);
if (in4.s_addr == INADDR_ANY)
break;
n = ioctl(s, SIOCGIFFLAGS, (char *)&u.ifreq);
if (n < 0)
break;
if ((u.ifreq.ifr_flags & IFF_UP) == 0)
break;
*have_v4 = 1;
}
break;
case AF_INET6:
if (*have_v6 == 0) {
memcpy(&in6,
&((struct sockaddr_in6 *)
&u.ifreq.ifr_addr)->sin6_addr,
sizeof in6);
if (memcmp(&in6, &in6addr_any, sizeof in6) == 0)
break;
n = ioctl(s, SIOCGIFFLAGS, (char *)&u.ifreq);
if (n < 0)
break;
if ((u.ifreq.ifr_flags & IFF_UP) == 0)
break;
*have_v6 = 1;
}
break;
}
}
if (buf != NULL)
memput(buf, bufsiz);
close(s);
/* printf("scan interface -> 4=%d 6=%d\n", *have_v4, *have_v6); */
return (0);
err_ret:
if (buf != NULL)
memput(buf, bufsiz);
if (s != -1)
close(s);
/* printf("scan interface -> 4=%d 6=%d\n", *have_v4, *have_v6); */
return (-1);
}
static struct hostent *
copyandmerge(struct hostent *he1, struct hostent *he2, int af, int *error_num) {
struct hostent *he = NULL;

View File

@ -16,7 +16,7 @@
*/
#ifndef lint
static const char rcsid[] = "$Id: ns_name.c,v 8.17 2001/10/03 14:34:32 marka Exp $";
static const char rcsid[] = "$Id: ns_name.c,v 8.18 2002/05/24 05:10:40 marka Exp $";
#endif
#include "port_before.h"
@ -681,6 +681,8 @@ special(int ch) {
case 0x2E: /* '.' */
case 0x3B: /* ';' */
case 0x5C: /* '\\' */
case 0x28: /* '(' */
case 0x29: /* ')' */
/* Special modifiers in zone files. */
case 0x40: /* '@' */
case 0x24: /* '$' */

View File

@ -95,7 +95,7 @@
#if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id: res_debug.c,v 8.45 2001/12/19 12:05:56 marka Exp $";
static const char rcsid[] = "$Id: res_debug.c,v 8.46 2002/05/21 01:57:45 marka Exp $";
#endif /* LIBC_SCCS and not lint */
#include "port_before.h"
@ -683,12 +683,10 @@ precsize_ntoa(prec)
/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
static u_int8_t
precsize_aton(strptr)
char **strptr;
{
precsize_aton(const char **strptr) {
unsigned int mval = 0, cmval = 0;
u_int8_t retval = 0;
char *cp;
const char *cp;
int exponent;
int mantissa;
@ -725,11 +723,8 @@ precsize_aton(strptr)
/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
static u_int32_t
latlon2ul(latlonstrptr,which)
char **latlonstrptr;
int *which;
{
char *cp;
latlon2ul(const char **latlonstrptr, int *which) {
const char *cp;
u_int32_t retval;
int deg = 0, min = 0, secs = 0, secsfrac = 0;

View File

@ -70,7 +70,7 @@
#if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
static const char rcsid[] = "$Id: res_init.c,v 8.28 2002/01/30 01:07:35 marka Exp $";
static const char rcsid[] = "$Id: res_init.c,v 8.29 2002/05/31 06:05:31 marka Exp $";
#endif /* LIBC_SCCS and not lint */
#include "port_before.h"
@ -194,7 +194,8 @@ __res_vinit(res_state statp, int preinit) {
if (statp->_u._ext.ext != NULL) {
memset(statp->_u._ext.ext, 0, sizeof(*statp->_u._ext.ext));
statp->_u._ext.ext->nsaddrs[0].sin = statp->nsaddr;
strcpy(statp->_u._ext.ext->nsuffix, "ip6.int");
strcpy(statp->_u._ext.ext->nsuffix, "ip6.arpa");
strcpy(statp->_u._ext.ext->nsuffix2, "ip6.int");
strcpy(statp->_u._ext.ext->bsuffix, "ip6.arpa");
}
#ifdef RESOLVSORT
@ -520,6 +521,14 @@ res_setoptions(res_state statp, const char *options, const char *source)
strncpy(ext->nsuffix, cp, i);
ext->nsuffix[i] = '\0';
}
else if (!strncmp(cp, "nibble2:", sizeof("nibble2:") - 1)) {
if (ext == NULL)
goto skip;
cp += sizeof("nibble2:") - 1;
i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix2) - 1);
strncpy(ext->nsuffix2, cp, i);
ext->nsuffix2[i] = '\0';
}
else if (!strncmp(cp, "bitstring:", sizeof("bitstring:") - 1)) {
if (ext == NULL)
goto skip;
@ -530,16 +539,12 @@ res_setoptions(res_state statp, const char *options, const char *source)
}
else if (!strncmp(cp, "v6revmode:", sizeof("v6revmode:") - 1)) {
cp += sizeof("v6revmode:") - 1;
if (!strncmp(cp, "nibble", sizeof("nibble") - 1)) {
statp->options &= ~RES_NO_NIBBLE;
statp->options |= RES_NO_BITSTRING;
} else if (!strncmp(cp, "bitstring",
sizeof("bitstring") - 1)) {
statp->options |= RES_NO_NIBBLE;
statp->options &= ~RES_NO_BITSTRING;
/* "nibble" and "bitstring" used to be valid */
if (!strncmp(cp, "single", sizeof("single") - 1)) {
statp->options |= RES_NO_NIBBLE2;
} else if (!strncmp(cp, "both", sizeof("both") - 1)) {
statp->options &=
~(RES_NO_NIBBLE|RES_NO_BITSTRING);
~RES_NO_NIBBLE2;
}
}
else {
@ -613,6 +618,13 @@ const char *
res_get_nibblesuffix(res_state statp) {
if (statp->_u._ext.ext)
return (statp->_u._ext.ext->nsuffix);
return ("ip6.arpa");
}
const char *
res_get_nibblesuffix2(res_state statp) {
if (statp->_u._ext.ext)
return (statp->_u._ext.ext->nsuffix2);
return ("ip6.int");
}

View File

@ -12,6 +12,7 @@ struct __res_state_ext {
} sort_list[MAXRESOLVSORT];
char nsuffix[64];
char bsuffix[64];
char nsuffix2[64];
};
extern int

View File

@ -1,5 +1,5 @@
'CC=cc'
'CDEBUG=-O2 -g -W -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings -Wformat -DMEMCLUSTER_RECORD=1'
'CDEBUG=-O2 -g -W -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings -Wformat'
'DESTBIN=/usr/bin'
'DESTSBIN=/usr/sbin'
'DESTEXEC=/usr/libexec'
@ -9,7 +9,8 @@
'DESTRUN=/var/run'
'LEX=lex -I'
'YACC=yacc -d'
'SYSLIBS=-ll -lutil'
'SYSLIBS=-lutil'
'LIBL=-ll'
'INSTALL=install'
'MANDIR=cat'
'MANROFF=(tbl|nroff -man)'