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 | |
8e41b68e WD |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 3 of the License, or | |
11 | * (at your option) any later version. | |
0f78b815 WD |
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 | 18 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 19 | * with this program; if not, visit the http://fsf.org website. |
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; |
d0c59b0e | 31 | extern int local_server; |
57b12568 | 32 | extern int inplace; |
e4b619b4 | 33 | extern int recurse; |
c8e83946 | 34 | extern int use_qsort; |
5275029d | 35 | extern int allow_inc_recurse; |
77502cba | 36 | extern int append_mode; |
e461b9be | 37 | extern int fuzzy_basis; |
b9f592fb | 38 | extern int read_batch; |
e4b619b4 | 39 | extern int delay_updates; |
aae43eb3 | 40 | extern int checksum_seed; |
57b12568 | 41 | extern int basis_dir_cnt; |
a1cc199b | 42 | extern int prune_empty_dirs; |
8a9709de | 43 | extern int protocol_version; |
5688c74d | 44 | extern int protect_args; |
99a957d3 WD |
45 | extern int preserve_uid; |
46 | extern int preserve_gid; | |
1c3344a1 | 47 | extern int preserve_acls; |
16edf865 | 48 | extern int preserve_xattrs; |
e4b619b4 WD |
49 | extern int need_messages_from_generator; |
50 | extern int delete_mode, delete_before, delete_during, delete_after; | |
486f8cd1 | 51 | extern char *shell_cmd; /* contains VER.SUB string if client is a pre-release */ |
c1289508 | 52 | extern char *partial_dir; |
57b12568 | 53 | extern char *dest_option; |
5688c74d WD |
54 | extern char *files_from; |
55 | extern char *filesfrom_host; | |
c1289508 | 56 | extern struct filter_list_struct filter_list; |
5688c74d WD |
57 | #ifdef ICONV_OPTION |
58 | extern char *iconv_opt; | |
59 | extern iconv_t ic_send, ic_recv; | |
60 | #endif | |
4fe159a8 | 61 | |
9742b386 WD |
62 | /* These index values are for the file-list's extra-attribute array. */ |
63 | int uid_ndx, gid_ndx, acls_ndx, xattrs_ndx; | |
5688c74d WD |
64 | #ifdef ICONV_OPTION |
65 | int ic_ndx; | |
66 | ||
67 | int filesfrom_convert = 0; | |
68 | #endif | |
9742b386 | 69 | |
486f8cd1 WD |
70 | /* The server makes sure that if either side only supports a pre-release |
71 | * version of a protocol, that both sides must speak a compatible version | |
72 | * of that protocol for it to be advertised as available. */ | |
73 | static void check_sub_protocol(void) | |
74 | { | |
75 | char *dot; | |
76 | int their_protocol, their_sub; | |
ac593860 | 77 | #if SUBPROTOCOL_VERSION != 0 |
486f8cd1 | 78 | int our_sub = protocol_version < PROTOCOL_VERSION ? 0 : SUBPROTOCOL_VERSION; |
ac593860 WD |
79 | #else |
80 | int our_sub = 0; | |
81 | #endif | |
486f8cd1 WD |
82 | |
83 | if (!shell_cmd || !(dot = strchr(shell_cmd, '.')) | |
84 | || !(their_protocol = atoi(shell_cmd)) | |
85 | || !(their_sub = atoi(dot+1))) { | |
ac593860 | 86 | #if SUBPROTOCOL_VERSION != 0 |
486f8cd1 WD |
87 | if (our_sub) |
88 | protocol_version--; | |
ac593860 | 89 | #endif |
486f8cd1 WD |
90 | return; |
91 | } | |
92 | ||
93 | if (their_protocol < protocol_version) { | |
94 | if (their_sub) | |
95 | protocol_version = their_protocol - 1; | |
96 | return; | |
97 | } | |
98 | ||
99 | if (their_protocol > protocol_version) | |
ac593860 | 100 | their_sub = 0; /* 0 == final version of older protocol */ |
486f8cd1 WD |
101 | if (their_sub != our_sub) |
102 | protocol_version--; | |
103 | } | |
104 | ||
aae43eb3 | 105 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 106 | { |
6eee13cf | 107 | if (am_sender) |
bc5df0f4 | 108 | file_extra_cnt += PTR_EXTRA_CNT; |
6eee13cf | 109 | else |
99a957d3 | 110 | file_extra_cnt++; |
6eee13cf | 111 | if (preserve_uid) |
9742b386 | 112 | uid_ndx = ++file_extra_cnt; |
6eee13cf | 113 | if (preserve_gid) |
9742b386 | 114 | gid_ndx = ++file_extra_cnt; |
1c3344a1 | 115 | if (preserve_acls && !am_sender) |
9742b386 | 116 | acls_ndx = ++file_extra_cnt; |
16edf865 | 117 | if (preserve_xattrs) |
9742b386 | 118 | xattrs_ndx = ++file_extra_cnt; |
6eee13cf | 119 | |
8a9709de | 120 | if (remote_protocol == 0) { |
486f8cd1 WD |
121 | if (am_server && !local_server) |
122 | check_sub_protocol(); | |
aa434321 | 123 | if (!read_batch) |
8a9709de | 124 | write_int(f_out, protocol_version); |
aa434321 | 125 | remote_protocol = read_int(f_in); |
8a9709de WD |
126 | if (protocol_version > remote_protocol) |
127 | protocol_version = remote_protocol; | |
13c5fc0e | 128 | } |
b9f592fb | 129 | if (read_batch && remote_protocol > protocol_version) { |
486f8cd1 | 130 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", |
b9f592fb WD |
131 | remote_protocol, protocol_version); |
132 | exit_cleanup(RERR_PROTOCOL); | |
133 | } | |
aae43eb3 | 134 | |
8a9709de WD |
135 | if (verbose > 3) { |
136 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", | |
137 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
138 | } | |
139 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
140 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 141 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 142 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 143 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
144 | } |
145 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 146 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
147 | am_server? "Client" : "Server"); |
148 | } | |
149 | if (protocol_version < MIN_PROTOCOL_VERSION) { | |
150 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", | |
151 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
152 | exit_cleanup(RERR_PROTOCOL); | |
153 | } | |
154 | if (protocol_version > PROTOCOL_VERSION) { | |
155 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", | |
156 | PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
157 | exit_cleanup(RERR_PROTOCOL); | |
158 | } | |
1b2db7ae | 159 | |
771d0add | 160 | if (protocol_version < 30) { |
77502cba WD |
161 | if (append_mode == 1) |
162 | append_mode = 2; | |
01894cf0 | 163 | if (preserve_acls && !local_server) { |
1c3344a1 WD |
164 | rprintf(FERROR, |
165 | "--acls requires protocol 30 or higher" | |
166 | " (negotiated %d).\n", | |
167 | protocol_version); | |
168 | exit_cleanup(RERR_PROTOCOL); | |
169 | } | |
01894cf0 | 170 | if (preserve_xattrs && !local_server) { |
16edf865 WD |
171 | rprintf(FERROR, |
172 | "--xattrs requires protocol 30 or higher" | |
173 | " (negotiated %d).\n", | |
174 | protocol_version); | |
175 | exit_cleanup(RERR_PROTOCOL); | |
176 | } | |
771d0add WD |
177 | } |
178 | ||
e4b619b4 WD |
179 | if (delete_mode && !(delete_before+delete_during+delete_after)) { |
180 | if (protocol_version < 30) | |
181 | delete_before = 1; | |
182 | else | |
183 | delete_during = 1; | |
184 | } | |
185 | ||
a1cc199b WD |
186 | if (protocol_version < 29) { |
187 | if (fuzzy_basis) { | |
188 | rprintf(FERROR, | |
189 | "--fuzzy requires protocol 29 or higher" | |
190 | " (negotiated %d).\n", | |
191 | protocol_version); | |
192 | exit_cleanup(RERR_PROTOCOL); | |
193 | } | |
e461b9be | 194 | |
a1cc199b WD |
195 | if (basis_dir_cnt && inplace) { |
196 | rprintf(FERROR, | |
197 | "%s with --inplace requires protocol 29 or higher" | |
198 | " (negotiated %d).\n", | |
199 | dest_option, protocol_version); | |
200 | exit_cleanup(RERR_PROTOCOL); | |
201 | } | |
57b12568 | 202 | |
a1cc199b WD |
203 | if (basis_dir_cnt > 1) { |
204 | rprintf(FERROR, | |
205 | "Using more than one %s option requires protocol" | |
206 | " 29 or higher (negotiated %d).\n", | |
207 | dest_option, protocol_version); | |
208 | exit_cleanup(RERR_PROTOCOL); | |
209 | } | |
210 | ||
211 | if (prune_empty_dirs) { | |
212 | rprintf(FERROR, | |
213 | "--prune-empty-dirs requires protocol 29 or higher" | |
214 | " (negotiated %d).\n", | |
215 | protocol_version); | |
216 | exit_cleanup(RERR_PROTOCOL); | |
217 | } | |
e4b619b4 | 218 | } else if (protocol_version >= 30) { |
d108e04f | 219 | if (recurse && allow_inc_recurse |
5275029d | 220 | && !delete_before && !delete_after && !delay_updates |
5688c74d | 221 | && !use_qsort && !prune_empty_dirs) |
3ea6e0e7 | 222 | inc_recurse = 1; |
e4b619b4 | 223 | need_messages_from_generator = 1; |
57b12568 WD |
224 | } |
225 | ||
7820fa94 WD |
226 | #ifdef ICONV_OPTION |
227 | if (iconv_opt && (!am_sender || inc_recurse)) | |
228 | ic_ndx = ++file_extra_cnt; | |
229 | #endif | |
230 | ||
d0c59b0e | 231 | if (partial_dir && *partial_dir != '/' && (!am_server || local_server)) { |
c1289508 WD |
232 | int flags = MATCHFLG_NO_PREFIXES | MATCHFLG_DIRECTORY; |
233 | if (!am_sender || protocol_version >= 30) | |
234 | flags |= MATCHFLG_PERISHABLE; | |
235 | parse_rule(&filter_list, partial_dir, flags, 0); | |
236 | } | |
237 | ||
5688c74d WD |
238 | |
239 | #ifdef ICONV_OPTION | |
240 | if (protect_args && files_from) { | |
241 | if (am_sender) | |
242 | filesfrom_convert = filesfrom_host && ic_send != (iconv_t)-1; | |
243 | else | |
244 | filesfrom_convert = !filesfrom_host && ic_recv != (iconv_t)-1; | |
245 | } | |
246 | #endif | |
247 | ||
bc63ae3f | 248 | if (am_server) { |
b1bf649c | 249 | if (!checksum_seed) |
13c5fc0e | 250 | checksum_seed = time(NULL); |
b1bf649c | 251 | write_int(f_out, checksum_seed); |
bc63ae3f S |
252 | } else { |
253 | checksum_seed = read_int(f_in); | |
13c5fc0e | 254 | } |
4fe159a8 | 255 | } |