2 * Compatibility routines for older rsync protocol versions.
4 * Copyright (C) Andrew Tridgell 1996
5 * Copyright (C) Paul Mackerras 1996
6 * Copyright (C) 2004, 2005, 2006 Wayne Davison
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
25 int remote_protocol = 0;
31 extern int fuzzy_basis;
32 extern int read_batch;
33 extern int max_delete;
34 extern int checksum_seed;
35 extern int basis_dir_cnt;
36 extern int prune_empty_dirs;
37 extern int protocol_version;
38 extern char *dest_option;
40 void setup_protocol(int f_out,int f_in)
42 if (remote_protocol == 0) {
44 write_int(f_out, protocol_version);
45 remote_protocol = read_int(f_in);
46 if (protocol_version > remote_protocol)
47 protocol_version = remote_protocol;
49 if (read_batch && remote_protocol > protocol_version) {
50 rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
51 remote_protocol, protocol_version);
52 exit_cleanup(RERR_PROTOCOL);
56 rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n",
57 am_server? "Server" : "Client", remote_protocol, protocol_version);
59 if (remote_protocol < MIN_PROTOCOL_VERSION
60 || remote_protocol > MAX_PROTOCOL_VERSION) {
61 rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
62 rprintf(FERROR,"(see the rsync man page for an explanation)\n");
63 exit_cleanup(RERR_PROTOCOL);
65 if (remote_protocol < OLD_PROTOCOL_VERSION) {
66 rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n",
67 am_server? "Client" : "Server");
69 if (protocol_version < MIN_PROTOCOL_VERSION) {
70 rprintf(FERROR, "--protocol must be at least %d on the %s.\n",
71 MIN_PROTOCOL_VERSION, am_server? "Server" : "Client");
72 exit_cleanup(RERR_PROTOCOL);
74 if (protocol_version > PROTOCOL_VERSION) {
75 rprintf(FERROR, "--protocol must be no more than %d on the %s.\n",
76 PROTOCOL_VERSION, am_server? "Server" : "Client");
77 exit_cleanup(RERR_PROTOCOL);
80 if (protocol_version < 30) {
81 if (max_delete == 0 && am_sender) {
83 "--max-delete=0 requires protocol 30 or higher"
84 " (negotiated %d).\n",
86 exit_cleanup(RERR_PROTOCOL);
90 if (protocol_version < 29) {
93 "--fuzzy requires protocol 29 or higher"
94 " (negotiated %d).\n",
96 exit_cleanup(RERR_PROTOCOL);
99 if (basis_dir_cnt && inplace) {
101 "%s with --inplace requires protocol 29 or higher"
102 " (negotiated %d).\n",
103 dest_option, protocol_version);
104 exit_cleanup(RERR_PROTOCOL);
107 if (basis_dir_cnt > 1) {
109 "Using more than one %s option requires protocol"
110 " 29 or higher (negotiated %d).\n",
111 dest_option, protocol_version);
112 exit_cleanup(RERR_PROTOCOL);
115 if (prune_empty_dirs) {
117 "--prune-empty-dirs requires protocol 29 or higher"
118 " (negotiated %d).\n",
120 exit_cleanup(RERR_PROTOCOL);
126 checksum_seed = time(NULL);
127 write_int(f_out, checksum_seed);
129 checksum_seed = read_int(f_in);