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* Versions.def: Add GLIBC_2.9 to libresolv.

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* include/resolv.h: Remove hidden proto declarations for __ns_*
	functions.  Add them for __dn_count_labels and __p_secstodate.
	* include/arpa/nameser.h: Add a number of hidden proto declarations.
	Define ns_msg_getflags macro here.
	* resolv/res_debug.c: Add hidden definition for __dn_count_labels
	and __p_secstodate.
	* resolv/Versions: Export functions from <arpa/nameser.h> from
	libresolv in version GLIBC_2.9.
	* resolv/ns_name.c: Integrate changes from bind 9.5.0.  Add necessary
	hidden definitions.
	* resolv/ns_netint.c: Likewise.
	* resolv/ns_parse.c: Likewise.
	* resolv/ns_print.c: Likewise.
	* resolv/ns_samedomain.c: Likewise.
	* resolv/ns_ttl.c: Likewise.
	* resolv/arpa/nameser_compat.h: Likewise.
	* resolv/arpa/nameser.h: Likewise.  Remove macros which redirect
	function calls.
	* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Use __ns_get16
	instead of ns_get16.
	* resolv/nss_dns/dns-host.c (getanswer_r): Use __ns_get16 and
	__ns_get32 instead of ns_get16 and ns_get32 respectively.
	(gaih_getanswer_slice): Likewise.
	* resolv/Makefile (libresolv-routines): Add ns_date.
	* resolv/ns_date.c: New file.
This commit is contained in:
Ulrich Drepper
2008-08-01 17:16:31 +00:00
parent 17756df399
commit cd5743fdec
18 changed files with 1093 additions and 571 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
resolv/ns_parse.c
View File

@ -1,18 +1,18 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996,1999 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.
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
#if !defined(_LIBC) && !defined(lint)
@ -41,25 +41,30 @@ static void setsection(ns_msg *msg, ns_sect sect);
/* Public. */
/* These need to be in the same order as the nres.h:ns_flag enum. */
struct _ns_flagdata _ns_flagdata[16] = {
{ 0x8000, 15 }, /* qr. */
{ 0x7800, 11 }, /* opcode. */
{ 0x0400, 10 }, /* aa. */
{ 0x0200, 9 }, /* tc. */
{ 0x0100, 8 }, /* rd. */
{ 0x0080, 7 }, /* ra. */
{ 0x0040, 6 }, /* z. */
{ 0x0020, 5 }, /* ad. */
{ 0x0010, 4 }, /* cd. */
{ 0x000f, 0 }, /* rcode. */
{ 0x0000, 0 }, /* expansion (1/6). */
{ 0x0000, 0 }, /* expansion (2/6). */
{ 0x0000, 0 }, /* expansion (3/6). */
{ 0x0000, 0 }, /* expansion (4/6). */
{ 0x0000, 0 }, /* expansion (5/6). */
{ 0x0000, 0 }, /* expansion (6/6). */
const struct _ns_flagdata _ns_flagdata[16] = {
{ 0x8000, 15 }, /*%< qr. */
{ 0x7800, 11 }, /*%< opcode. */
{ 0x0400, 10 }, /*%< aa. */
{ 0x0200, 9 }, /*%< tc. */
{ 0x0100, 8 }, /*%< rd. */
{ 0x0080, 7 }, /*%< ra. */
{ 0x0040, 6 }, /*%< z. */
{ 0x0020, 5 }, /*%< ad. */
{ 0x0010, 4 }, /*%< cd. */
{ 0x000f, 0 }, /*%< rcode. */
{ 0x0000, 0 }, /*%< expansion (1/6). */
{ 0x0000, 0 }, /*%< expansion (2/6). */
{ 0x0000, 0 }, /*%< expansion (3/6). */
{ 0x0000, 0 }, /*%< expansion (4/6). */
{ 0x0000, 0 }, /*%< expansion (5/6). */
{ 0x0000, 0 }, /*%< expansion (6/6). */
};
#undef ns_msg_getflag
int ns_msg_getflag(ns_msg handle, int flag) {
return(((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift);
}
int
ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) {
const u_char *optr = ptr;
@ -83,6 +88,7 @@ ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) {
RETERR(EMSGSIZE);
return (ptr - optr);
}
libresolv_hidden_def (ns_skiprr)
int
ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
@ -120,13 +126,16 @@ ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
setsection(handle, ns_s_max);
return (0);
}
libresolv_hidden_def (ns_initparse)
int
ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
int b;
int tmp;
/* Make section right. */
if (section < 0 || section >= ns_s_max)
tmp = section;
if (tmp < 0 || section >= ns_s_max)
RETERR(ENODEV);
if (section != handle->_sect)
setsection(handle, section);
@ -139,38 +148,38 @@ ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
if (rrnum < handle->_rrnum)
setsection(handle, section);
if (rrnum > handle->_rrnum) {
b = ns_skiprr(handle->_ptr, handle->_eom, section,
b = ns_skiprr(handle->_msg_ptr, handle->_eom, section,
rrnum - handle->_rrnum);
if (b < 0)
return (-1);
handle->_ptr += b;
handle->_msg_ptr += b;
handle->_rrnum = rrnum;
}
/* Do the parse. */
b = dn_expand(handle->_msg, handle->_eom,
handle->_ptr, rr->name, NS_MAXDNAME);
handle->_msg_ptr, rr->name, NS_MAXDNAME);
if (b < 0)
return (-1);
handle->_ptr += b;
if (handle->_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
handle->_msg_ptr += b;
if (handle->_msg_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
RETERR(EMSGSIZE);
NS_GET16(rr->type, handle->_ptr);
NS_GET16(rr->rr_class, handle->_ptr);
NS_GET16(rr->type, handle->_msg_ptr);
NS_GET16(rr->rr_class, handle->_msg_ptr);
if (section == ns_s_qd) {
rr->ttl = 0;
rr->rdlength = 0;
rr->rdata = NULL;
} else {
if (handle->_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
if (handle->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
RETERR(EMSGSIZE);
NS_GET32(rr->ttl, handle->_ptr);
NS_GET16(rr->rdlength, handle->_ptr);
if (handle->_ptr + rr->rdlength > handle->_eom)
NS_GET32(rr->ttl, handle->_msg_ptr);
NS_GET16(rr->rdlength, handle->_msg_ptr);
if (handle->_msg_ptr + rr->rdlength > handle->_eom)
RETERR(EMSGSIZE);
rr->rdata = handle->_ptr;
handle->_ptr += rr->rdlength;
rr->rdata = handle->_msg_ptr;
handle->_msg_ptr += rr->rdlength;
}
if (++handle->_rrnum > handle->_counts[(int)section])
setsection(handle, (ns_sect)((int)section + 1));
@ -178,6 +187,7 @@ ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
/* All done. */
return (0);
}
libresolv_hidden_def (ns_parserr)
/* Private. */
@ -186,9 +196,11 @@ setsection(ns_msg *msg, ns_sect sect) {
msg->_sect = sect;
if (sect == ns_s_max) {
msg->_rrnum = -1;
msg->_ptr = NULL;
msg->_msg_ptr = NULL;
} else {
msg->_rrnum = 0;
msg->_ptr = msg->_sections[(int)sect];
msg->_msg_ptr = msg->_sections[(int)sect];
}
}
/*! \file */