Commit | Line | Data |
---|---|---|
0f78b815 | 1 | /* |
d1f83bcc | 2 | * Compatibility routines for older rsync protocol versions. |
0f78b815 WD |
3 | * |
4 | * Copyright (C) Andrew Tridgell 1996 | |
5 | * Copyright (C) Paul Mackerras 1996 | |
6 | * Copyright (C) 2004, 2005, 2006 Wayne Davison | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
e7c67065 WD |
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. | |
0f78b815 | 21 | */ |
4fe159a8 AT |
22 | |
23 | #include "rsync.h" | |
24 | ||
8a9709de WD |
25 | int remote_protocol = 0; |
26 | ||
b9f592fb | 27 | extern int verbose; |
aae43eb3 | 28 | extern int am_server; |
771d0add | 29 | extern int am_sender; |
57b12568 | 30 | extern int inplace; |
e461b9be | 31 | extern int fuzzy_basis; |
b9f592fb | 32 | extern int read_batch; |
771d0add | 33 | extern int max_delete; |
aae43eb3 | 34 | extern int checksum_seed; |
57b12568 | 35 | extern int basis_dir_cnt; |
a1cc199b | 36 | extern int prune_empty_dirs; |
8a9709de | 37 | extern int protocol_version; |
57b12568 | 38 | extern char *dest_option; |
4fe159a8 | 39 | |
aae43eb3 | 40 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 41 | { |
8a9709de | 42 | if (remote_protocol == 0) { |
aa434321 | 43 | if (!read_batch) |
8a9709de | 44 | write_int(f_out, protocol_version); |
aa434321 | 45 | remote_protocol = read_int(f_in); |
8a9709de WD |
46 | if (protocol_version > remote_protocol) |
47 | protocol_version = remote_protocol; | |
13c5fc0e | 48 | } |
b9f592fb WD |
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); | |
53 | } | |
aae43eb3 | 54 | |
8a9709de WD |
55 | if (verbose > 3) { |
56 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", | |
57 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
58 | } | |
59 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
60 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 61 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 62 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 63 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
64 | } |
65 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 66 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
67 | am_server? "Client" : "Server"); |
68 | } | |
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); | |
73 | } | |
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); | |
78 | } | |
1b2db7ae | 79 | |
771d0add WD |
80 | if (protocol_version < 30) { |
81 | if (max_delete == 0 && am_sender) { | |
82 | rprintf(FERROR, | |
83 | "--max-delete=0 requires protocol 30 or higher" | |
84 | " (negotiated %d).\n", | |
85 | protocol_version); | |
86 | exit_cleanup(RERR_PROTOCOL); | |
87 | } | |
88 | } | |
89 | ||
a1cc199b WD |
90 | if (protocol_version < 29) { |
91 | if (fuzzy_basis) { | |
92 | rprintf(FERROR, | |
93 | "--fuzzy requires protocol 29 or higher" | |
94 | " (negotiated %d).\n", | |
95 | protocol_version); | |
96 | exit_cleanup(RERR_PROTOCOL); | |
97 | } | |
e461b9be | 98 | |
a1cc199b WD |
99 | if (basis_dir_cnt && inplace) { |
100 | rprintf(FERROR, | |
101 | "%s with --inplace requires protocol 29 or higher" | |
102 | " (negotiated %d).\n", | |
103 | dest_option, protocol_version); | |
104 | exit_cleanup(RERR_PROTOCOL); | |
105 | } | |
57b12568 | 106 | |
a1cc199b WD |
107 | if (basis_dir_cnt > 1) { |
108 | rprintf(FERROR, | |
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); | |
113 | } | |
114 | ||
115 | if (prune_empty_dirs) { | |
116 | rprintf(FERROR, | |
117 | "--prune-empty-dirs requires protocol 29 or higher" | |
118 | " (negotiated %d).\n", | |
119 | protocol_version); | |
120 | exit_cleanup(RERR_PROTOCOL); | |
121 | } | |
57b12568 WD |
122 | } |
123 | ||
bc63ae3f | 124 | if (am_server) { |
b1bf649c | 125 | if (!checksum_seed) |
13c5fc0e | 126 | checksum_seed = time(NULL); |
b1bf649c | 127 | write_int(f_out, checksum_seed); |
bc63ae3f S |
128 | } else { |
129 | checksum_seed = read_int(f_in); | |
13c5fc0e | 130 | } |
4fe159a8 | 131 | } |