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 | 25 | int remote_protocol = 0; |
99a957d3 | 26 | int file_extra_cnt = 0; /* count of file-list extras that everyone gets */ |
e4b619b4 | 27 | int incremental = 0; |
8a9709de | 28 | |
b9f592fb | 29 | extern int verbose; |
aae43eb3 | 30 | extern int am_server; |
771d0add | 31 | extern int am_sender; |
57b12568 | 32 | extern int inplace; |
e4b619b4 | 33 | extern int recurse; |
e461b9be | 34 | extern int fuzzy_basis; |
b9f592fb | 35 | extern int read_batch; |
771d0add | 36 | extern int max_delete; |
e4b619b4 | 37 | extern int delay_updates; |
aae43eb3 | 38 | extern int checksum_seed; |
57b12568 | 39 | extern int basis_dir_cnt; |
a1cc199b | 40 | extern int prune_empty_dirs; |
8a9709de | 41 | extern int protocol_version; |
99a957d3 WD |
42 | extern int preserve_uid; |
43 | extern int preserve_gid; | |
e4b619b4 WD |
44 | extern int preserve_hard_links; |
45 | extern int need_messages_from_generator; | |
46 | extern int delete_mode, delete_before, delete_during, delete_after; | |
57b12568 | 47 | extern char *dest_option; |
4fe159a8 | 48 | |
aae43eb3 | 49 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 50 | { |
6eee13cf | 51 | if (am_sender) |
99a957d3 | 52 | file_extra_cnt += PTR_EXTRA_LEN; |
6eee13cf | 53 | else |
99a957d3 | 54 | file_extra_cnt++; |
6eee13cf | 55 | if (preserve_uid) |
99a957d3 | 56 | preserve_uid = ++file_extra_cnt; |
6eee13cf | 57 | if (preserve_gid) |
99a957d3 | 58 | preserve_gid = ++file_extra_cnt; |
6eee13cf | 59 | |
8a9709de | 60 | if (remote_protocol == 0) { |
aa434321 | 61 | if (!read_batch) |
8a9709de | 62 | write_int(f_out, protocol_version); |
aa434321 | 63 | remote_protocol = read_int(f_in); |
8a9709de WD |
64 | if (protocol_version > remote_protocol) |
65 | protocol_version = remote_protocol; | |
13c5fc0e | 66 | } |
b9f592fb WD |
67 | if (read_batch && remote_protocol > protocol_version) { |
68 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", | |
69 | remote_protocol, protocol_version); | |
70 | exit_cleanup(RERR_PROTOCOL); | |
71 | } | |
aae43eb3 | 72 | |
8a9709de WD |
73 | if (verbose > 3) { |
74 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", | |
75 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
76 | } | |
77 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
78 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 79 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 80 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 81 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
82 | } |
83 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 84 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
85 | am_server? "Client" : "Server"); |
86 | } | |
87 | if (protocol_version < MIN_PROTOCOL_VERSION) { | |
88 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", | |
89 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
90 | exit_cleanup(RERR_PROTOCOL); | |
91 | } | |
92 | if (protocol_version > PROTOCOL_VERSION) { | |
93 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", | |
94 | PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
95 | exit_cleanup(RERR_PROTOCOL); | |
96 | } | |
1b2db7ae | 97 | |
771d0add WD |
98 | if (protocol_version < 30) { |
99 | if (max_delete == 0 && am_sender) { | |
100 | rprintf(FERROR, | |
101 | "--max-delete=0 requires protocol 30 or higher" | |
102 | " (negotiated %d).\n", | |
103 | protocol_version); | |
104 | exit_cleanup(RERR_PROTOCOL); | |
105 | } | |
106 | } | |
107 | ||
e4b619b4 WD |
108 | if (delete_mode && !(delete_before+delete_during+delete_after)) { |
109 | if (protocol_version < 30) | |
110 | delete_before = 1; | |
111 | else | |
112 | delete_during = 1; | |
113 | } | |
114 | ||
a1cc199b WD |
115 | if (protocol_version < 29) { |
116 | if (fuzzy_basis) { | |
117 | rprintf(FERROR, | |
118 | "--fuzzy requires protocol 29 or higher" | |
119 | " (negotiated %d).\n", | |
120 | protocol_version); | |
121 | exit_cleanup(RERR_PROTOCOL); | |
122 | } | |
e461b9be | 123 | |
a1cc199b WD |
124 | if (basis_dir_cnt && inplace) { |
125 | rprintf(FERROR, | |
126 | "%s with --inplace requires protocol 29 or higher" | |
127 | " (negotiated %d).\n", | |
128 | dest_option, protocol_version); | |
129 | exit_cleanup(RERR_PROTOCOL); | |
130 | } | |
57b12568 | 131 | |
a1cc199b WD |
132 | if (basis_dir_cnt > 1) { |
133 | rprintf(FERROR, | |
134 | "Using more than one %s option requires protocol" | |
135 | " 29 or higher (negotiated %d).\n", | |
136 | dest_option, protocol_version); | |
137 | exit_cleanup(RERR_PROTOCOL); | |
138 | } | |
139 | ||
140 | if (prune_empty_dirs) { | |
141 | rprintf(FERROR, | |
142 | "--prune-empty-dirs requires protocol 29 or higher" | |
143 | " (negotiated %d).\n", | |
144 | protocol_version); | |
145 | exit_cleanup(RERR_PROTOCOL); | |
146 | } | |
e4b619b4 WD |
147 | } else if (protocol_version >= 30) { |
148 | if (recurse && !preserve_hard_links && !delete_before | |
149 | && !delete_after && !delay_updates) | |
150 | incremental = 1; | |
151 | need_messages_from_generator = 1; | |
57b12568 WD |
152 | } |
153 | ||
bc63ae3f | 154 | if (am_server) { |
b1bf649c | 155 | if (!checksum_seed) |
13c5fc0e | 156 | checksum_seed = time(NULL); |
b1bf649c | 157 | write_int(f_out, checksum_seed); |
bc63ae3f S |
158 | } else { |
159 | checksum_seed = read_int(f_in); | |
13c5fc0e | 160 | } |
4fe159a8 | 161 | } |