Commit | Line | Data |
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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 | 25 | int remote_protocol = 0; |
99a957d3 | 26 | int file_extra_cnt = 0; /* count of file-list extras that everyone gets */ |
8a9709de | 27 | |
b9f592fb | 28 | extern int verbose; |
aae43eb3 | 29 | extern int am_server; |
771d0add | 30 | extern int am_sender; |
57b12568 | 31 | extern int inplace; |
e461b9be | 32 | extern int fuzzy_basis; |
b9f592fb | 33 | extern int read_batch; |
771d0add | 34 | extern int max_delete; |
aae43eb3 | 35 | extern int checksum_seed; |
57b12568 | 36 | extern int basis_dir_cnt; |
a1cc199b | 37 | extern int prune_empty_dirs; |
8a9709de | 38 | extern int protocol_version; |
99a957d3 WD |
39 | extern int preserve_uid; |
40 | extern int preserve_gid; | |
57b12568 | 41 | extern char *dest_option; |
4fe159a8 | 42 | |
aae43eb3 | 43 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 44 | { |
6eee13cf | 45 | if (am_sender) |
99a957d3 | 46 | file_extra_cnt += PTR_EXTRA_LEN; |
6eee13cf | 47 | else |
99a957d3 | 48 | file_extra_cnt++; |
6eee13cf | 49 | if (preserve_uid) |
99a957d3 | 50 | preserve_uid = ++file_extra_cnt; |
6eee13cf | 51 | if (preserve_gid) |
99a957d3 | 52 | preserve_gid = ++file_extra_cnt; |
6eee13cf | 53 | |
8a9709de | 54 | if (remote_protocol == 0) { |
aa434321 | 55 | if (!read_batch) |
8a9709de | 56 | write_int(f_out, protocol_version); |
aa434321 | 57 | remote_protocol = read_int(f_in); |
8a9709de WD |
58 | if (protocol_version > remote_protocol) |
59 | protocol_version = remote_protocol; | |
13c5fc0e | 60 | } |
b9f592fb WD |
61 | if (read_batch && remote_protocol > protocol_version) { |
62 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", | |
63 | remote_protocol, protocol_version); | |
64 | exit_cleanup(RERR_PROTOCOL); | |
65 | } | |
aae43eb3 | 66 | |
8a9709de WD |
67 | if (verbose > 3) { |
68 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", | |
69 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
70 | } | |
71 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
72 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 73 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 74 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 75 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
76 | } |
77 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 78 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
79 | am_server? "Client" : "Server"); |
80 | } | |
81 | if (protocol_version < MIN_PROTOCOL_VERSION) { | |
82 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", | |
83 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
84 | exit_cleanup(RERR_PROTOCOL); | |
85 | } | |
86 | if (protocol_version > PROTOCOL_VERSION) { | |
87 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", | |
88 | PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
89 | exit_cleanup(RERR_PROTOCOL); | |
90 | } | |
1b2db7ae | 91 | |
771d0add WD |
92 | if (protocol_version < 30) { |
93 | if (max_delete == 0 && am_sender) { | |
94 | rprintf(FERROR, | |
95 | "--max-delete=0 requires protocol 30 or higher" | |
96 | " (negotiated %d).\n", | |
97 | protocol_version); | |
98 | exit_cleanup(RERR_PROTOCOL); | |
99 | } | |
100 | } | |
101 | ||
a1cc199b WD |
102 | if (protocol_version < 29) { |
103 | if (fuzzy_basis) { | |
104 | rprintf(FERROR, | |
105 | "--fuzzy requires protocol 29 or higher" | |
106 | " (negotiated %d).\n", | |
107 | protocol_version); | |
108 | exit_cleanup(RERR_PROTOCOL); | |
109 | } | |
e461b9be | 110 | |
a1cc199b WD |
111 | if (basis_dir_cnt && inplace) { |
112 | rprintf(FERROR, | |
113 | "%s with --inplace requires protocol 29 or higher" | |
114 | " (negotiated %d).\n", | |
115 | dest_option, protocol_version); | |
116 | exit_cleanup(RERR_PROTOCOL); | |
117 | } | |
57b12568 | 118 | |
a1cc199b WD |
119 | if (basis_dir_cnt > 1) { |
120 | rprintf(FERROR, | |
121 | "Using more than one %s option requires protocol" | |
122 | " 29 or higher (negotiated %d).\n", | |
123 | dest_option, protocol_version); | |
124 | exit_cleanup(RERR_PROTOCOL); | |
125 | } | |
126 | ||
127 | if (prune_empty_dirs) { | |
128 | rprintf(FERROR, | |
129 | "--prune-empty-dirs requires protocol 29 or higher" | |
130 | " (negotiated %d).\n", | |
131 | protocol_version); | |
132 | exit_cleanup(RERR_PROTOCOL); | |
133 | } | |
57b12568 WD |
134 | } |
135 | ||
bc63ae3f | 136 | if (am_server) { |
b1bf649c | 137 | if (!checksum_seed) |
13c5fc0e | 138 | checksum_seed = time(NULL); |
b1bf649c | 139 | write_int(f_out, checksum_seed); |
bc63ae3f S |
140 | } else { |
141 | checksum_seed = read_int(f_in); | |
13c5fc0e | 142 | } |
4fe159a8 | 143 | } |