2 Copyright (C) Andrew Tridgell 1996
3 Copyright (C) Paul Mackerras 1996
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * Compatibility routines for older rsync protocol versions.
28 int remote_protocol = 0;
34 extern int fuzzy_basis;
35 extern int read_batch;
36 extern int checksum_seed;
37 extern int basis_dir_cnt;
38 extern int prune_empty_dirs;
39 extern int protocol_version;
40 extern char *dest_option;
42 void setup_protocol(int f_out,int f_in)
44 if (remote_protocol == 0) {
46 write_int(f_out, protocol_version);
47 remote_protocol = read_int(f_in);
48 if (protocol_version > remote_protocol)
49 protocol_version = remote_protocol;
51 if (read_batch && remote_protocol > protocol_version) {
52 rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
53 remote_protocol, protocol_version);
54 exit_cleanup(RERR_PROTOCOL);
58 rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n",
59 am_server? "Server" : "Client", remote_protocol, protocol_version);
61 if (remote_protocol < MIN_PROTOCOL_VERSION
62 || remote_protocol > MAX_PROTOCOL_VERSION) {
63 rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
64 rprintf(FERROR,"(see the rsync man page for an explanation)\n");
65 exit_cleanup(RERR_PROTOCOL);
67 if (remote_protocol < OLD_PROTOCOL_VERSION) {
68 rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n",
69 am_server? "Client" : "Server");
71 if (protocol_version < MIN_PROTOCOL_VERSION) {
72 rprintf(FERROR, "--protocol must be at least %d on the %s.\n",
73 MIN_PROTOCOL_VERSION, am_server? "Server" : "Client");
74 exit_cleanup(RERR_PROTOCOL);
76 if (protocol_version > PROTOCOL_VERSION) {
77 rprintf(FERROR, "--protocol must be no more than %d on the %s.\n",
78 PROTOCOL_VERSION, am_server? "Server" : "Client");
79 exit_cleanup(RERR_PROTOCOL);
82 if (protocol_version < 29) {
85 "--fuzzy requires protocol 29 or higher"
86 " (negotiated %d).\n",
88 exit_cleanup(RERR_PROTOCOL);
91 if (basis_dir_cnt && inplace) {
93 "%s with --inplace requires protocol 29 or higher"
94 " (negotiated %d).\n",
95 dest_option, protocol_version);
96 exit_cleanup(RERR_PROTOCOL);
99 if (basis_dir_cnt > 1) {
101 "Using more than one %s option requires protocol"
102 " 29 or higher (negotiated %d).\n",
103 dest_option, protocol_version);
104 exit_cleanup(RERR_PROTOCOL);
107 if (prune_empty_dirs) {
109 "--prune-empty-dirs requires protocol 29 or higher"
110 " (negotiated %d).\n",
112 exit_cleanup(RERR_PROTOCOL);
118 checksum_seed = time(NULL);
119 write_int(f_out, checksum_seed);
121 checksum_seed = read_int(f_in);