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;
33 extern int fuzzy_basis;
34 extern int read_batch;
35 extern int checksum_seed;
36 extern int basis_dir_cnt;
37 extern int prune_empty_dirs;
38 extern int protocol_version;
39 extern char *dest_option;
41 void setup_protocol(int f_out,int f_in)
43 if (remote_protocol == 0) {
45 write_int(f_out, protocol_version);
46 remote_protocol = read_int(f_in);
47 if (protocol_version > remote_protocol)
48 protocol_version = remote_protocol;
50 if (read_batch && remote_protocol > protocol_version) {
51 rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
52 remote_protocol, protocol_version);
53 exit_cleanup(RERR_PROTOCOL);
57 rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n",
58 am_server? "Server" : "Client", remote_protocol, protocol_version);
60 if (remote_protocol < MIN_PROTOCOL_VERSION
61 || remote_protocol > MAX_PROTOCOL_VERSION) {
62 rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
63 rprintf(FERROR,"(see the rsync man page for an explanation)\n");
64 exit_cleanup(RERR_PROTOCOL);
66 if (remote_protocol < OLD_PROTOCOL_VERSION) {
67 rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n",
68 am_server? "Client" : "Server");
70 if (protocol_version < MIN_PROTOCOL_VERSION) {
71 rprintf(FERROR, "--protocol must be at least %d on the %s.\n",
72 MIN_PROTOCOL_VERSION, am_server? "Server" : "Client");
73 exit_cleanup(RERR_PROTOCOL);
75 if (protocol_version > PROTOCOL_VERSION) {
76 rprintf(FERROR, "--protocol must be no more than %d on the %s.\n",
77 PROTOCOL_VERSION, am_server? "Server" : "Client");
78 exit_cleanup(RERR_PROTOCOL);
81 if (protocol_version < 29) {
84 "--fuzzy requires protocol 29 or higher"
85 " (negotiated %d).\n",
87 exit_cleanup(RERR_PROTOCOL);
90 if (basis_dir_cnt && inplace) {
92 "%s with --inplace requires protocol 29 or higher"
93 " (negotiated %d).\n",
94 dest_option, protocol_version);
95 exit_cleanup(RERR_PROTOCOL);
98 if (basis_dir_cnt > 1) {
100 "Using more than one %s option requires protocol"
101 " 29 or higher (negotiated %d).\n",
102 dest_option, protocol_version);
103 exit_cleanup(RERR_PROTOCOL);
106 if (prune_empty_dirs) {
108 "--prune-empty-dirs requires protocol 29 or higher"
109 " (negotiated %d).\n",
111 exit_cleanup(RERR_PROTOCOL);
117 checksum_seed = time(NULL);
118 write_int(f_out, checksum_seed);
120 checksum_seed = read_int(f_in);