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169 lines
6.9 KiB
Plaintext
169 lines
6.9 KiB
Plaintext
/*
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* Copyright (c) 1995, 1996
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* This protocol definition file describes a file transfer
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* system used to very quickly move NIS maps from one host to
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* another. This is similar to what Sun does with their ypxfrd
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* protocol, but it must be stressed that this protocol is _NOT_
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* compatible with Sun's. There are a couple of reasons for this:
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*
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* 1) Sun's protocol is proprietary. The protocol definition is
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* not freely available in any of the SunRPC source distributions,
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* even though the NIS v2 protocol is.
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*
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* 2) The idea here is to transfer entire raw files rather than
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* sending just the records. Sun uses ndbm for its NIS map files,
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* while FreeBSD uses Berkeley DB. Both are hash databases, but the
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* formats are incompatible, making it impossible for them to
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* use each others' files. Even if FreeBSD adopted ndbm for its
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* database format, FreeBSD/i386 is a little-endian OS and
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* SunOS/SPARC is big-endian; ndbm is byte-order sensitive and
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* not very smart about it, which means an attempt to read a
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* database on a little-endian box that was created on a big-endian
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* box (or vice-versa) can cause the ndbm code to eat itself.
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* Luckily, Berkeley DB is able to deal with this situation in
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* a more graceful manner.
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*
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* While the protocol is incompatible, the idea is the same: we just open
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* up a TCP pipe to the client and transfer the raw map database
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* from the master server to the slave. This is many times faster than
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* the standard yppush/ypxfr transfer method since it saves us from
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* having to recreate the map databases via the DB library each time.
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* For example: creating a passwd database with 30,000 entries with yp_mkdb
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* can take a couple of minutes, but to just copy the file takes only a few
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* seconds.
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*/
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#ifndef RPC_HDR
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%#include <sys/cdefs.h>
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#endif
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/* XXX cribbed from yp.x */
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const _YPMAXRECORD = 16777216;
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const _YPMAXDOMAIN = 64;
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const _YPMAXMAP = 64;
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const _YPMAXPEER = 64;
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/* Suggested default -- not necessarily the one used. */
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const YPXFRBLOCK = 32767;
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/*
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* Possible return codes from the remote server.
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*/
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enum xfrstat {
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XFR_REQUEST_OK = 1, /* Transfer request granted */
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XFR_DENIED = 2, /* Transfer request denied */
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XFR_NOFILE = 3, /* Requested map file doesn't exist */
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XFR_ACCESS = 4, /* File exists, but I couldn't access it */
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XFR_BADDB = 5, /* File is not a hash database */
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XFR_READ_OK = 6, /* Block read successfully */
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XFR_READ_ERR = 7, /* Read error during transfer */
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XFR_DONE = 8, /* Transfer completed */
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XFR_DB_ENDIAN_MISMATCH = 9, /* Database byte order mismatch */
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XFR_DB_TYPE_MISMATCH = 10 /* Database type mismatch */
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};
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/*
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* Database type specifications. The client can use this to ask
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* the server for a particular type of database or just take whatever
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* the server has to offer.
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*/
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enum xfr_db_type {
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XFR_DB_ASCII = 1, /* Flat ASCII text */
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XFR_DB_BSD_HASH = 2, /* Berkeley DB, hash method */
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XFR_DB_BSD_BTREE = 3, /* Berkeley DB, btree method */
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XFR_DB_BSD_RECNO = 4, /* Berkeley DB, recno method */
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XFR_DB_BSD_MPOOL = 5, /* Berkeley DB, mpool method */
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XFR_DB_BSD_NDBM = 6, /* Berkeley DB, hash, ndbm compat */
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XFR_DB_GNU_GDBM = 7, /* GNU GDBM */
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XFR_DB_DBM = 8, /* Old, deprecated dbm format */
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XFR_DB_NDBM = 9, /* ndbm format (used by Sun's NISv2) */
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XFR_DB_OPAQUE = 10, /* Mystery format -- just pass along */
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XFR_DB_ANY = 11, /* I'll take any format you've got */
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XFR_DB_UNKNOWN = 12 /* Unknown format */
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};
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/*
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* Machine byte order specification. This allows the client to check
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* that it's copying a map database from a machine of similar byte sex.
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* This is necessary for handling database libraries that are fatally
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* byte order sensitive.
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*
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* The XFR_ENDIAN_ANY type is for use with the Berkeley DB database
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* formats; Berkeley DB is smart enough to make up for byte order
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* differences, so byte sex isn't important.
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*/
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enum xfr_byte_order {
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XFR_ENDIAN_BIG = 1, /* We want big endian */
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XFR_ENDIAN_LITTLE = 2, /* We want little endian */
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XFR_ENDIAN_ANY = 3 /* We'll take whatever you got */
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};
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typedef string xfrdomain<_YPMAXDOMAIN>;
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typedef string xfrmap<_YPMAXMAP>;
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typedef string xfrmap_filename<_YPMAXMAP>; /* actual name of map file */
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/*
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* Ask the remote ypxfrd for a map using this structure.
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* Note: we supply both a map name and a map file name. These are not
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* the same thing. In the case of ndbm, maps are stored in two files:
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* map.bykey.pag and may.bykey.dir. We may also have to deal with
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* file extensions (on the off chance that the remote server is supporting
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* multiple DB formats). To handle this, we tell the remote server both
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* what map we want and, in the case of ndbm, whether we want the .dir
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* or the .pag part. This name should not be a fully qualified path:
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* it's up to the remote server to decide which directories to look in.
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*/
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struct ypxfr_mapname {
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xfrmap xfrmap;
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xfrdomain xfrdomain;
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xfrmap_filename xfrmap_filename;
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xfr_db_type xfr_db_type;
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xfr_byte_order xfr_byte_order;
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};
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/* Read response using this structure. */
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union xfr switch (bool ok) {
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case TRUE:
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opaque xfrblock_buf<>;
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case FALSE:
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xfrstat xfrstat;
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};
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program YPXFRD_FREEBSD_PROG {
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version YPXFRD_FREEBSD_VERS {
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union xfr
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YPXFRD_GETMAP(ypxfr_mapname) = 1;
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} = 1;
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} = 600100069; /* 100069 + 60000000 -- 100069 is the Sun ypxfrd prog number */
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