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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /resolv/ns_parse.c
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'resolv/ns_parse.c')
-rw-r--r--resolv/ns_parse.c202
1 files changed, 0 insertions, 202 deletions
diff --git a/resolv/ns_parse.c b/resolv/ns_parse.c
deleted file mode 100644
index 863b20a9f7..0000000000
--- a/resolv/ns_parse.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * 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 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.
- */
-
-/* Import. */
-
-#include <sys/types.h>
-
-#include <netinet/in.h>
-#include <arpa/nameser.h>
-
-#include <errno.h>
-#include <resolv.h>
-#include <string.h>
-
-/* Forward. */
-
-static void setsection(ns_msg *msg, ns_sect sect);
-
-/* Macros. */
-
-#define RETERR(err) do { __set_errno (err); return (-1); } while (0)
-
-/* Public. */
-
-/* These need to be in the same order as the nres.h:ns_flag enum. */
-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;
-
- for ((void)NULL; count > 0; count--) {
- int b, rdlength;
-
- b = dn_skipname(ptr, eom);
- if (b < 0)
- RETERR(EMSGSIZE);
- ptr += b/*Name*/ + NS_INT16SZ/*Type*/ + NS_INT16SZ/*Class*/;
- if (section != ns_s_qd) {
- if (ptr + NS_INT32SZ + NS_INT16SZ > eom)
- RETERR(EMSGSIZE);
- ptr += NS_INT32SZ/*TTL*/;
- NS_GET16(rdlength, ptr);
- ptr += rdlength/*RData*/;
- }
- }
- if (ptr > eom)
- RETERR(EMSGSIZE);
- return (ptr - optr);
-}
-libresolv_hidden_def (ns_skiprr)
-
-int
-ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
- const u_char *eom = msg + msglen;
- int i;
-
- memset(handle, 0x5e, sizeof *handle);
- handle->_msg = msg;
- handle->_eom = eom;
- if (msg + NS_INT16SZ > eom)
- RETERR(EMSGSIZE);
- NS_GET16(handle->_id, msg);
- if (msg + NS_INT16SZ > eom)
- RETERR(EMSGSIZE);
- NS_GET16(handle->_flags, msg);
- for (i = 0; i < ns_s_max; i++) {
- if (msg + NS_INT16SZ > eom)
- RETERR(EMSGSIZE);
- NS_GET16(handle->_counts[i], msg);
- }
- for (i = 0; i < ns_s_max; i++)
- if (handle->_counts[i] == 0)
- handle->_sections[i] = NULL;
- else {
- int b = ns_skiprr(msg, eom, (ns_sect)i,
- handle->_counts[i]);
-
- if (b < 0)
- return (-1);
- handle->_sections[i] = msg;
- msg += b;
- }
- if (msg != eom)
- RETERR(EMSGSIZE);
- 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. */
- tmp = section;
- if (tmp < 0 || section >= ns_s_max)
- RETERR(ENODEV);
- if (section != handle->_sect)
- setsection(handle, section);
-
- /* Make rrnum right. */
- if (rrnum == -1)
- rrnum = handle->_rrnum;
- if (rrnum < 0 || rrnum >= handle->_counts[(int)section])
- RETERR(ENODEV);
- if (rrnum < handle->_rrnum)
- setsection(handle, section);
- if (rrnum > handle->_rrnum) {
- b = ns_skiprr(handle->_msg_ptr, handle->_eom, section,
- rrnum - handle->_rrnum);
-
- if (b < 0)
- return (-1);
- handle->_msg_ptr += b;
- handle->_rrnum = rrnum;
- }
-
- /* Do the parse. */
- b = dn_expand(handle->_msg, handle->_eom,
- handle->_msg_ptr, rr->name, NS_MAXDNAME);
- if (b < 0)
- return (-1);
- handle->_msg_ptr += b;
- if (handle->_msg_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
- RETERR(EMSGSIZE);
- 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->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
- RETERR(EMSGSIZE);
- 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->_msg_ptr;
- handle->_msg_ptr += rr->rdlength;
- }
- if (++handle->_rrnum > handle->_counts[(int)section])
- setsection(handle, (ns_sect)((int)section + 1));
-
- /* All done. */
- return (0);
-}
-libresolv_hidden_def (ns_parserr)
-
-/* Private. */
-
-static void
-setsection(ns_msg *msg, ns_sect sect) {
- msg->_sect = sect;
- if (sect == ns_s_max) {
- msg->_rrnum = -1;
- msg->_msg_ptr = NULL;
- } else {
- msg->_rrnum = 0;
- msg->_msg_ptr = msg->_sections[(int)sect];
- }
-}
-
-/*! \file */
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