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 | |
b3bf9b9d | 6 | * Copyright (C) 2004-2009 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; |
5d8dcd1e | 27 | int compat_flags = 0; |
de6ab501 | 28 | int use_safe_inc_flist = 0; |
8a9709de | 29 | |
aae43eb3 | 30 | extern int am_server; |
771d0add | 31 | extern int am_sender; |
d0c59b0e | 32 | extern int local_server; |
57b12568 | 33 | extern int inplace; |
e4b619b4 | 34 | extern int recurse; |
c8e83946 | 35 | extern int use_qsort; |
5275029d | 36 | extern int allow_inc_recurse; |
77502cba | 37 | extern int append_mode; |
e461b9be | 38 | extern int fuzzy_basis; |
b9f592fb | 39 | extern int read_batch; |
e4b619b4 | 40 | extern int delay_updates; |
aae43eb3 | 41 | extern int checksum_seed; |
57b12568 | 42 | extern int basis_dir_cnt; |
a1cc199b | 43 | extern int prune_empty_dirs; |
8a9709de | 44 | extern int protocol_version; |
5688c74d | 45 | extern int protect_args; |
99a957d3 WD |
46 | extern int preserve_uid; |
47 | extern int preserve_gid; | |
1c3344a1 | 48 | extern int preserve_acls; |
16edf865 | 49 | extern int preserve_xattrs; |
e4b619b4 WD |
50 | extern int need_messages_from_generator; |
51 | extern int delete_mode, delete_before, delete_during, delete_after; | |
1ed56a05 | 52 | extern char *shell_cmd; |
c1289508 | 53 | extern char *partial_dir; |
57b12568 | 54 | extern char *dest_option; |
5688c74d WD |
55 | extern char *files_from; |
56 | extern char *filesfrom_host; | |
7b6c5c77 | 57 | extern filter_rule_list filter_list; |
f7a76b9c | 58 | extern int need_unsorted_flist; |
5688c74d | 59 | #ifdef ICONV_OPTION |
5688c74d | 60 | extern iconv_t ic_send, ic_recv; |
91fd15b8 | 61 | extern char *iconv_opt; |
5688c74d | 62 | #endif |
4fe159a8 | 63 | |
9742b386 | 64 | /* These index values are for the file-list's extra-attribute array. */ |
f7a76b9c | 65 | int uid_ndx, gid_ndx, acls_ndx, xattrs_ndx, unsort_ndx; |
5688c74d | 66 | |
1ed56a05 | 67 | int receiver_symlink_times = 0; /* receiver can set the time on a symlink */ |
91fd15b8 | 68 | int sender_symlink_iconv = 0; /* sender should convert symlink content */ |
1ed56a05 | 69 | |
f7a76b9c | 70 | #ifdef ICONV_OPTION |
5688c74d WD |
71 | int filesfrom_convert = 0; |
72 | #endif | |
9742b386 | 73 | |
1ed56a05 WD |
74 | #define CF_INC_RECURSE (1<<0) |
75 | #define CF_SYMLINK_TIMES (1<<1) | |
91fd15b8 | 76 | #define CF_SYMLINK_ICONV (1<<2) |
de6ab501 | 77 | #define CF_SAFE_FLIST (1<<3) |
1ed56a05 WD |
78 | |
79 | static const char *client_info; | |
80 | ||
486f8cd1 WD |
81 | /* The server makes sure that if either side only supports a pre-release |
82 | * version of a protocol, that both sides must speak a compatible version | |
83 | * of that protocol for it to be advertised as available. */ | |
84 | static void check_sub_protocol(void) | |
85 | { | |
86 | char *dot; | |
87 | int their_protocol, their_sub; | |
ac593860 | 88 | #if SUBPROTOCOL_VERSION != 0 |
486f8cd1 | 89 | int our_sub = protocol_version < PROTOCOL_VERSION ? 0 : SUBPROTOCOL_VERSION; |
ac593860 WD |
90 | #else |
91 | int our_sub = 0; | |
92 | #endif | |
486f8cd1 | 93 | |
1ed56a05 WD |
94 | /* client_info starts with VER.SUB string if client is a pre-release. */ |
95 | if (!(their_protocol = atoi(client_info)) | |
96 | || !(dot = strchr(client_info, '.')) | |
486f8cd1 | 97 | || !(their_sub = atoi(dot+1))) { |
ac593860 | 98 | #if SUBPROTOCOL_VERSION != 0 |
486f8cd1 WD |
99 | if (our_sub) |
100 | protocol_version--; | |
ac593860 | 101 | #endif |
486f8cd1 WD |
102 | return; |
103 | } | |
104 | ||
105 | if (their_protocol < protocol_version) { | |
106 | if (their_sub) | |
107 | protocol_version = their_protocol - 1; | |
108 | return; | |
109 | } | |
110 | ||
111 | if (their_protocol > protocol_version) | |
ac593860 | 112 | their_sub = 0; /* 0 == final version of older protocol */ |
486f8cd1 WD |
113 | if (their_sub != our_sub) |
114 | protocol_version--; | |
115 | } | |
116 | ||
9970bed4 WD |
117 | void set_allow_inc_recurse(void) |
118 | { | |
1ed56a05 WD |
119 | client_info = shell_cmd ? shell_cmd : ""; |
120 | ||
aabb50d4 WD |
121 | if (!recurse || use_qsort) |
122 | allow_inc_recurse = 0; | |
123 | else if (!am_sender | |
124 | && (delete_before || delete_after | |
125 | || delay_updates || prune_empty_dirs)) | |
9970bed4 WD |
126 | allow_inc_recurse = 0; |
127 | else if (am_server && !local_server | |
1ed56a05 | 128 | && (strchr(client_info, 'i') == NULL)) |
9970bed4 WD |
129 | allow_inc_recurse = 0; |
130 | } | |
131 | ||
aae43eb3 | 132 | void setup_protocol(int f_out,int f_in) |
4fe159a8 | 133 | { |
6eee13cf | 134 | if (am_sender) |
bc5df0f4 | 135 | file_extra_cnt += PTR_EXTRA_CNT; |
6eee13cf | 136 | else |
99a957d3 | 137 | file_extra_cnt++; |
6eee13cf | 138 | if (preserve_uid) |
9742b386 | 139 | uid_ndx = ++file_extra_cnt; |
6eee13cf | 140 | if (preserve_gid) |
9742b386 | 141 | gid_ndx = ++file_extra_cnt; |
1c3344a1 | 142 | if (preserve_acls && !am_sender) |
9742b386 | 143 | acls_ndx = ++file_extra_cnt; |
16edf865 | 144 | if (preserve_xattrs) |
9742b386 | 145 | xattrs_ndx = ++file_extra_cnt; |
6eee13cf | 146 | |
9970bed4 WD |
147 | if (am_server) |
148 | set_allow_inc_recurse(); | |
149 | ||
8a9709de | 150 | if (remote_protocol == 0) { |
486f8cd1 WD |
151 | if (am_server && !local_server) |
152 | check_sub_protocol(); | |
aa434321 | 153 | if (!read_batch) |
8a9709de | 154 | write_int(f_out, protocol_version); |
aa434321 | 155 | remote_protocol = read_int(f_in); |
8a9709de WD |
156 | if (protocol_version > remote_protocol) |
157 | protocol_version = remote_protocol; | |
13c5fc0e | 158 | } |
b9f592fb | 159 | if (read_batch && remote_protocol > protocol_version) { |
486f8cd1 | 160 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", |
b9f592fb WD |
161 | remote_protocol, protocol_version); |
162 | exit_cleanup(RERR_PROTOCOL); | |
163 | } | |
aae43eb3 | 164 | |
951e826b | 165 | if (DEBUG_GTE(PROTO, 1)) { |
8a9709de WD |
166 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", |
167 | am_server? "Server" : "Client", remote_protocol, protocol_version); | |
168 | } | |
169 | if (remote_protocol < MIN_PROTOCOL_VERSION | |
170 | || remote_protocol > MAX_PROTOCOL_VERSION) { | |
4ccfd96c | 171 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
d310a212 | 172 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
65417579 | 173 | exit_cleanup(RERR_PROTOCOL); |
8a9709de WD |
174 | } |
175 | if (remote_protocol < OLD_PROTOCOL_VERSION) { | |
1b2db7ae | 176 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
8a9709de WD |
177 | am_server? "Client" : "Server"); |
178 | } | |
179 | if (protocol_version < MIN_PROTOCOL_VERSION) { | |
180 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", | |
181 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
182 | exit_cleanup(RERR_PROTOCOL); | |
183 | } | |
184 | if (protocol_version > PROTOCOL_VERSION) { | |
185 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", | |
186 | PROTOCOL_VERSION, am_server? "Server" : "Client"); | |
187 | exit_cleanup(RERR_PROTOCOL); | |
188 | } | |
a7c1fa00 WD |
189 | if (read_batch) |
190 | check_batch_flags(); | |
1b2db7ae | 191 | |
771d0add | 192 | if (protocol_version < 30) { |
77502cba WD |
193 | if (append_mode == 1) |
194 | append_mode = 2; | |
01894cf0 | 195 | if (preserve_acls && !local_server) { |
1c3344a1 WD |
196 | rprintf(FERROR, |
197 | "--acls requires protocol 30 or higher" | |
198 | " (negotiated %d).\n", | |
199 | protocol_version); | |
200 | exit_cleanup(RERR_PROTOCOL); | |
201 | } | |
01894cf0 | 202 | if (preserve_xattrs && !local_server) { |
16edf865 WD |
203 | rprintf(FERROR, |
204 | "--xattrs requires protocol 30 or higher" | |
205 | " (negotiated %d).\n", | |
206 | protocol_version); | |
207 | exit_cleanup(RERR_PROTOCOL); | |
208 | } | |
771d0add WD |
209 | } |
210 | ||
e4b619b4 WD |
211 | if (delete_mode && !(delete_before+delete_during+delete_after)) { |
212 | if (protocol_version < 30) | |
213 | delete_before = 1; | |
214 | else | |
215 | delete_during = 1; | |
216 | } | |
217 | ||
a1cc199b WD |
218 | if (protocol_version < 29) { |
219 | if (fuzzy_basis) { | |
220 | rprintf(FERROR, | |
221 | "--fuzzy requires protocol 29 or higher" | |
222 | " (negotiated %d).\n", | |
223 | protocol_version); | |
224 | exit_cleanup(RERR_PROTOCOL); | |
225 | } | |
e461b9be | 226 | |
a1cc199b WD |
227 | if (basis_dir_cnt && inplace) { |
228 | rprintf(FERROR, | |
229 | "%s with --inplace requires protocol 29 or higher" | |
230 | " (negotiated %d).\n", | |
231 | dest_option, protocol_version); | |
232 | exit_cleanup(RERR_PROTOCOL); | |
233 | } | |
57b12568 | 234 | |
a1cc199b WD |
235 | if (basis_dir_cnt > 1) { |
236 | rprintf(FERROR, | |
237 | "Using more than one %s option requires protocol" | |
238 | " 29 or higher (negotiated %d).\n", | |
239 | dest_option, protocol_version); | |
240 | exit_cleanup(RERR_PROTOCOL); | |
241 | } | |
242 | ||
243 | if (prune_empty_dirs) { | |
244 | rprintf(FERROR, | |
245 | "--prune-empty-dirs requires protocol 29 or higher" | |
246 | " (negotiated %d).\n", | |
247 | protocol_version); | |
248 | exit_cleanup(RERR_PROTOCOL); | |
249 | } | |
e4b619b4 | 250 | } else if (protocol_version >= 30) { |
9970bed4 | 251 | if (am_server) { |
1ed56a05 | 252 | compat_flags = allow_inc_recurse ? CF_INC_RECURSE : 0; |
accc091f | 253 | #ifdef CAN_SET_SYMLINK_TIMES |
1ed56a05 | 254 | compat_flags |= CF_SYMLINK_TIMES; |
91fd15b8 WD |
255 | #endif |
256 | #ifdef ICONV_OPTION | |
257 | compat_flags |= CF_SYMLINK_ICONV; | |
1ed56a05 | 258 | #endif |
de6ab501 WD |
259 | if (local_server || strchr(client_info, 'f') != NULL) |
260 | compat_flags |= CF_SAFE_FLIST; | |
1ed56a05 | 261 | write_byte(f_out, compat_flags); |
de6ab501 | 262 | } else |
1ed56a05 WD |
263 | compat_flags = read_byte(f_in); |
264 | /* The inc_recurse var MUST be set to 0 or 1. */ | |
265 | inc_recurse = compat_flags & CF_INC_RECURSE ? 1 : 0; | |
266 | if (am_sender) { | |
267 | receiver_symlink_times = am_server | |
268 | ? strchr(client_info, 'L') != NULL | |
269 | : !!(compat_flags & CF_SYMLINK_TIMES); | |
270 | } | |
accc091f | 271 | #ifdef CAN_SET_SYMLINK_TIMES |
1ed56a05 WD |
272 | else |
273 | receiver_symlink_times = 1; | |
91fd15b8 WD |
274 | #endif |
275 | #ifdef ICONV_OPTION | |
276 | sender_symlink_iconv = iconv_opt && (am_server | |
eecc969e | 277 | ? local_server || strchr(client_info, 's') != NULL |
91fd15b8 | 278 | : !!(compat_flags & CF_SYMLINK_ICONV)); |
1ed56a05 | 279 | #endif |
9970bed4 WD |
280 | if (inc_recurse && !allow_inc_recurse) { |
281 | /* This should only be able to happen in a batch. */ | |
282 | fprintf(stderr, | |
283 | "Incompatible options specified for inc-recursive %s.\n", | |
52d9a554 | 284 | read_batch ? "batch file" : "connection"); |
9970bed4 WD |
285 | exit_cleanup(RERR_SYNTAX); |
286 | } | |
de6ab501 | 287 | use_safe_inc_flist = (compat_flags & CF_SAFE_FLIST) || protocol_version >= 31; |
e4b619b4 | 288 | need_messages_from_generator = 1; |
accc091f | 289 | #ifdef CAN_SET_SYMLINK_TIMES |
1ed9018e WD |
290 | } else if (!am_sender) { |
291 | receiver_symlink_times = 1; | |
292 | #endif | |
57b12568 WD |
293 | } |
294 | ||
f7a76b9c WD |
295 | if (need_unsorted_flist && (!am_sender || inc_recurse)) |
296 | unsort_ndx = ++file_extra_cnt; | |
7820fa94 | 297 | |
d0c59b0e | 298 | if (partial_dir && *partial_dir != '/' && (!am_server || local_server)) { |
b32d4254 | 299 | int rflags = FILTRULE_NO_PREFIXES | FILTRULE_DIRECTORY; |
c1289508 | 300 | if (!am_sender || protocol_version >= 30) |
b32d4254 | 301 | rflags |= FILTRULE_PERISHABLE; |
c8fa85b2 | 302 | parse_filter_str(&filter_list, partial_dir, rule_template(rflags), 0); |
c1289508 WD |
303 | } |
304 | ||
5688c74d WD |
305 | |
306 | #ifdef ICONV_OPTION | |
307 | if (protect_args && files_from) { | |
308 | if (am_sender) | |
309 | filesfrom_convert = filesfrom_host && ic_send != (iconv_t)-1; | |
310 | else | |
311 | filesfrom_convert = !filesfrom_host && ic_recv != (iconv_t)-1; | |
312 | } | |
313 | #endif | |
314 | ||
bc63ae3f | 315 | if (am_server) { |
b1bf649c | 316 | if (!checksum_seed) |
13c5fc0e | 317 | checksum_seed = time(NULL); |
b1bf649c | 318 | write_int(f_out, checksum_seed); |
bc63ae3f S |
319 | } else { |
320 | checksum_seed = read_int(f_in); | |
13c5fc0e | 321 | } |
4fe159a8 | 322 | } |