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 | |
ba2133d6 | 6 | * Copyright (C) 2004-2007 Wayne Davison |
0f78b815 WD |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
ba2133d6 WD |
9 | * it under the terms of the GNU General Public License version 2 as |
10 | * published by the Free Software Foundation. | |
0f78b815 WD |
11 | * |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
e7c67065 WD |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. | |
0f78b815 | 20 | */ |
4fe159a8 AT |
21 | |
22 | #include "rsync.h" | |
23 | ||
8a9709de | 24 | int remote_protocol = 0; |
99a957d3 | 25 | int file_extra_cnt = 0; /* count of file-list extras that everyone gets */ |
3ea6e0e7 | 26 | int inc_recurse = 0; |
8a9709de | 27 | |
b9f592fb | 28 | extern int verbose; |
aae43eb3 | 29 | extern int am_server; |
771d0add | 30 | extern int am_sender; |
57b12568 | 31 | extern int inplace; |
e4b619b4 | 32 | extern int recurse; |
e461b9be | 33 | extern int fuzzy_basis; |
b9f592fb | 34 | extern int read_batch; |
771d0add | 35 | extern int max_delete; |
e4b619b4 | 36 | extern int delay_updates; |
aae43eb3 | 37 | extern int checksum_seed; |
57b12568 | 38 | extern int basis_dir_cnt; |
a1cc199b | 39 | extern int prune_empty_dirs; |
8a9709de | 40 | extern int protocol_version; |
99a957d3 WD |
41 | extern int preserve_uid; |
42 | extern int preserve_gid; | |
e4b619b4 WD |
43 | extern int preserve_hard_links; |
44 | extern int need_messages_from_generator; | |
45 | extern int delete_mode, delete_before, delete_during, delete_after; | |
c1289508 WD |
46 | extern int delete_excluded; |
47 | extern int make_backups; | |
48 | extern char *backup_dir, *backup_suffix; | |
49 | extern char *partial_dir; | |
57b12568 | 50 | extern char *dest_option; |
c1289508 | 51 | extern struct filter_list_struct filter_list; |
4fe159a8 | 52 | |
aae43eb3 | 53 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 54 | { |
6eee13cf | 55 | if (am_sender) |
99a957d3 | 56 | file_extra_cnt += PTR_EXTRA_LEN; |
6eee13cf | 57 | else |
99a957d3 | 58 | file_extra_cnt++; |
6eee13cf | 59 | if (preserve_uid) |
99a957d3 | 60 | preserve_uid = ++file_extra_cnt; |
6eee13cf | 61 | if (preserve_gid) |
99a957d3 | 62 | preserve_gid = ++file_extra_cnt; |
6eee13cf | 63 | |
8a9709de | 64 | if (remote_protocol == 0) { |
aa434321 | 65 | if (!read_batch) |
8a9709de | 66 | write_int(f_out, protocol_version); |
aa434321 | 67 | remote_protocol = read_int(f_in); |
8a9709de WD |
68 | if (protocol_version > remote_protocol) |
69 | protocol_version = remote_protocol; | |
13c5fc0e | 70 | } |
b9f592fb WD |
71 | if (read_batch && remote_protocol > protocol_version) { |
72 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", | |
73 | remote_protocol, protocol_version); | |
74 | exit_cleanup(RERR_PROTOCOL); | |
75 | } | |
aae43eb3 | 76 | |
8a9709de WD |
77 | if (verbose > 3) { |
78 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", | |
79 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
80 | } | |
81 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
82 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 83 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 84 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 85 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
86 | } |
87 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 88 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
89 | am_server? "Client" : "Server"); |
90 | } | |
91 | if (protocol_version < MIN_PROTOCOL_VERSION) { | |
92 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", | |
93 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
94 | exit_cleanup(RERR_PROTOCOL); | |
95 | } | |
96 | if (protocol_version > PROTOCOL_VERSION) { | |
97 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", | |
98 | PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
99 | exit_cleanup(RERR_PROTOCOL); | |
100 | } | |
1b2db7ae | 101 | |
771d0add WD |
102 | if (protocol_version < 30) { |
103 | if (max_delete == 0 && am_sender) { | |
104 | rprintf(FERROR, | |
105 | "--max-delete=0 requires protocol 30 or higher" | |
106 | " (negotiated %d).\n", | |
107 | protocol_version); | |
108 | exit_cleanup(RERR_PROTOCOL); | |
109 | } | |
110 | } | |
111 | ||
e4b619b4 WD |
112 | if (delete_mode && !(delete_before+delete_during+delete_after)) { |
113 | if (protocol_version < 30) | |
114 | delete_before = 1; | |
115 | else | |
116 | delete_during = 1; | |
117 | } | |
118 | ||
a1cc199b WD |
119 | if (protocol_version < 29) { |
120 | if (fuzzy_basis) { | |
121 | rprintf(FERROR, | |
122 | "--fuzzy requires protocol 29 or higher" | |
123 | " (negotiated %d).\n", | |
124 | protocol_version); | |
125 | exit_cleanup(RERR_PROTOCOL); | |
126 | } | |
e461b9be | 127 | |
a1cc199b WD |
128 | if (basis_dir_cnt && inplace) { |
129 | rprintf(FERROR, | |
130 | "%s with --inplace requires protocol 29 or higher" | |
131 | " (negotiated %d).\n", | |
132 | dest_option, protocol_version); | |
133 | exit_cleanup(RERR_PROTOCOL); | |
134 | } | |
57b12568 | 135 | |
a1cc199b WD |
136 | if (basis_dir_cnt > 1) { |
137 | rprintf(FERROR, | |
138 | "Using more than one %s option requires protocol" | |
139 | " 29 or higher (negotiated %d).\n", | |
140 | dest_option, protocol_version); | |
141 | exit_cleanup(RERR_PROTOCOL); | |
142 | } | |
143 | ||
144 | if (prune_empty_dirs) { | |
145 | rprintf(FERROR, | |
146 | "--prune-empty-dirs requires protocol 29 or higher" | |
147 | " (negotiated %d).\n", | |
148 | protocol_version); | |
149 | exit_cleanup(RERR_PROTOCOL); | |
150 | } | |
e4b619b4 WD |
151 | } else if (protocol_version >= 30) { |
152 | if (recurse && !preserve_hard_links && !delete_before | |
7a28d184 | 153 | && !delete_after && !delay_updates && !prune_empty_dirs) |
3ea6e0e7 | 154 | inc_recurse = 1; |
e4b619b4 | 155 | need_messages_from_generator = 1; |
57b12568 WD |
156 | } |
157 | ||
c1289508 WD |
158 | if (make_backups && !backup_dir && delete_mode && !delete_excluded |
159 | && !am_server) { | |
160 | char *rule; | |
161 | if (asprintf(&rule, "P%s *%s", | |
162 | !am_sender || protocol_version >= 30 ? "p" : "", | |
163 | backup_suffix) < 0) | |
164 | out_of_memory("setup_protocol"); | |
165 | parse_rule(&filter_list, rule, 0, 0); | |
166 | free(rule); | |
167 | } | |
168 | if (partial_dir && *partial_dir != '/' && !am_server) { | |
169 | int flags = MATCHFLG_NO_PREFIXES | MATCHFLG_DIRECTORY; | |
170 | if (!am_sender || protocol_version >= 30) | |
171 | flags |= MATCHFLG_PERISHABLE; | |
172 | parse_rule(&filter_list, partial_dir, flags, 0); | |
173 | } | |
174 | ||
bc63ae3f | 175 | if (am_server) { |
b1bf649c | 176 | if (!checksum_seed) |
13c5fc0e | 177 | checksum_seed = time(NULL); |
b1bf649c | 178 | write_int(f_out, checksum_seed); |
bc63ae3f S |
179 | } else { |
180 | checksum_seed = read_int(f_in); | |
13c5fc0e | 181 | } |
4fe159a8 | 182 | } |