diff options
Diffstat (limited to 'contrib/bind9/lib/bind/resolv/res_update.c')
| -rw-r--r-- | contrib/bind9/lib/bind/resolv/res_update.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/contrib/bind9/lib/bind/resolv/res_update.c b/contrib/bind9/lib/bind/resolv/res_update.c deleted file mode 100644 index 483e19d..0000000 --- a/contrib/bind9/lib/bind/resolv/res_update.c +++ /dev/null @@ -1,213 +0,0 @@ -#if !defined(lint) && !defined(SABER) -static const char rcsid[] = "$Id: res_update.c,v 1.12.18.1 2005/04/27 05:01:12 sra Exp $"; -#endif /* not lint */ - -/* - * 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. - */ - -/*! \file - * \brief - * Based on the Dynamic DNS reference implementation by Viraj Bais - * <viraj_bais@ccm.fm.intel.com> - */ - -#include "port_before.h" - -#include <sys/param.h> -#include <sys/socket.h> -#include <sys/time.h> - -#include <netinet/in.h> -#include <arpa/inet.h> -#include <arpa/nameser.h> - -#include <errno.h> -#include <limits.h> -#include <netdb.h> -#include <res_update.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <isc/list.h> -#include <resolv.h> - -#include "port_after.h" -#include "res_private.h" - -/*% - * Separate a linked list of records into groups so that all records - * in a group will belong to a single zone on the nameserver. - * Create a dynamic update packet for each zone and send it to the - * nameservers for that zone, and await answer. - * Abort if error occurs in updating any zone. - * Return the number of zones updated on success, < 0 on error. - * - * On error, caller must deal with the unsynchronized zones - * eg. an A record might have been successfully added to the forward - * zone but the corresponding PTR record would be missing if error - * was encountered while updating the reverse zone. - */ - -struct zonegrp { - char z_origin[MAXDNAME]; - ns_class z_class; - union res_sockaddr_union z_nsaddrs[MAXNS]; - int z_nscount; - int z_flags; - LIST(ns_updrec) z_rrlist; - LINK(struct zonegrp) z_link; -}; - -#define ZG_F_ZONESECTADDED 0x0001 - -/* Forward. */ - -static void res_dprintf(const char *, ...) ISC_FORMAT_PRINTF(1, 2); - -/* Macros. */ - -#define DPRINTF(x) do {\ - int save_errno = errno; \ - if ((statp->options & RES_DEBUG) != 0U) res_dprintf x; \ - errno = save_errno; \ - } while (0) - -/* Public. */ - -int -res_nupdate(res_state statp, ns_updrec *rrecp_in, ns_tsig_key *key) { - ns_updrec *rrecp; - u_char answer[PACKETSZ]; - u_char *packet; - struct zonegrp *zptr, tgrp; - LIST(struct zonegrp) zgrps; - int nzones = 0, nscount = 0, n; - union res_sockaddr_union nsaddrs[MAXNS]; - - packet = malloc(NS_MAXMSG); - if (packet == NULL) { - DPRINTF(("malloc failed")); - return (0); - } - /* Thread all of the updates onto a list of groups. */ - INIT_LIST(zgrps); - memset(&tgrp, 0, sizeof (tgrp)); - for (rrecp = rrecp_in; rrecp; - rrecp = LINKED(rrecp, r_link) ? NEXT(rrecp, r_link) : NULL) { - int nscnt; - /* Find the origin for it if there is one. */ - tgrp.z_class = rrecp->r_class; - nscnt = res_findzonecut2(statp, rrecp->r_dname, tgrp.z_class, - RES_EXHAUSTIVE, tgrp.z_origin, - sizeof tgrp.z_origin, - tgrp.z_nsaddrs, MAXNS); - if (nscnt <= 0) { - DPRINTF(("res_findzonecut failed (%d)", nscnt)); - goto done; - } - tgrp.z_nscount = nscnt; - /* Find the group for it if there is one. */ - for (zptr = HEAD(zgrps); zptr != NULL; zptr = NEXT(zptr, z_link)) - if (ns_samename(tgrp.z_origin, zptr->z_origin) == 1 && - tgrp.z_class == zptr->z_class) - break; - /* Make a group for it if there isn't one. */ - if (zptr == NULL) { - zptr = malloc(sizeof *zptr); - if (zptr == NULL) { - DPRINTF(("malloc failed")); - goto done; - } - *zptr = tgrp; - zptr->z_flags = 0; - INIT_LINK(zptr, z_link); - INIT_LIST(zptr->z_rrlist); - APPEND(zgrps, zptr, z_link); - } - /* Thread this rrecp onto the right group. */ - APPEND(zptr->z_rrlist, rrecp, r_glink); - } - - for (zptr = HEAD(zgrps); zptr != NULL; zptr = NEXT(zptr, z_link)) { - /* Construct zone section and prepend it. */ - rrecp = res_mkupdrec(ns_s_zn, zptr->z_origin, - zptr->z_class, ns_t_soa, 0); - if (rrecp == NULL) { - DPRINTF(("res_mkupdrec failed")); - goto done; - } - PREPEND(zptr->z_rrlist, rrecp, r_glink); - zptr->z_flags |= ZG_F_ZONESECTADDED; - - /* Marshall the update message. */ - n = res_nmkupdate(statp, HEAD(zptr->z_rrlist), - packet, NS_MAXMSG); - DPRINTF(("res_mkupdate -> %d", n)); - if (n < 0) - goto done; - - /* Temporarily replace the resolver's nameserver set. */ - nscount = res_getservers(statp, nsaddrs, MAXNS); - res_setservers(statp, zptr->z_nsaddrs, zptr->z_nscount); - - /* Send the update and remember the result. */ - if (key != NULL) - n = res_nsendsigned(statp, packet, n, key, - answer, sizeof answer); - else - n = res_nsend(statp, packet, n, answer, sizeof answer); - if (n < 0) { - DPRINTF(("res_nsend: send error, n=%d (%s)\n", - n, strerror(errno))); - goto done; - } - if (((HEADER *)answer)->rcode == NOERROR) - nzones++; - - /* Restore resolver's nameserver set. */ - res_setservers(statp, nsaddrs, nscount); - nscount = 0; - } - done: - while (!EMPTY(zgrps)) { - zptr = HEAD(zgrps); - if ((zptr->z_flags & ZG_F_ZONESECTADDED) != 0) - res_freeupdrec(HEAD(zptr->z_rrlist)); - UNLINK(zgrps, zptr, z_link); - free(zptr); - } - if (nscount != 0) - res_setservers(statp, nsaddrs, nscount); - - free(packet); - return (nzones); -} - -/* Private. */ - -static void -res_dprintf(const char *fmt, ...) { - va_list ap; - - va_start(ap, fmt); - fputs(";; res_nupdate: ", stderr); - vfprintf(stderr, fmt, ap); - fputc('\n', stderr); - va_end(ap); -} |
