Commit | Line | Data |
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7a2fd68b | 1 | /* |
c627d613 AT |
2 | Copyright (C) Andrew Tridgell 1996 |
3 | Copyright (C) Paul Mackerras 1996 | |
7a2fd68b | 4 | |
c627d613 AT |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
7a2fd68b | 9 | |
c627d613 AT |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
7a2fd68b | 14 | |
c627d613 AT |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
2f03f956 AT |
20 | /* this file contains code used by more than one part of the rsync |
21 | process */ | |
c627d613 | 22 | |
2f03f956 | 23 | #include "rsync.h" |
c8563142 | 24 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
ceccbacc WD |
25 | #include <iconv.h> |
26 | #endif | |
27 | #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET | |
28 | #include <libcharset.h> | |
29 | #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO | |
30 | #include <langinfo.h> | |
31 | #endif | |
43a481dc | 32 | |
c627d613 | 33 | extern int verbose; |
c627d613 | 34 | extern int dry_run; |
8324bd5c | 35 | extern int daemon_log_format_has_i; |
9b499e95 | 36 | extern int preserve_perms; |
81284832 | 37 | extern int preserve_executability; |
2f03f956 | 38 | extern int preserve_times; |
82471e68 | 39 | extern int omit_dir_times; |
7b8356d0 | 40 | extern int am_root; |
794b0a03 | 41 | extern int am_server; |
c3e5e585 WD |
42 | extern int am_sender; |
43 | extern int am_generator; | |
ed9d969c | 44 | extern int am_starting_up; |
e0f4a661 | 45 | extern int allow_8bit_chars; |
2f03f956 AT |
46 | extern int preserve_uid; |
47 | extern int preserve_gid; | |
c786a7ae | 48 | extern int inplace; |
81b07870 | 49 | extern int keep_dirlinks; |
2f03f956 | 50 | extern int make_backups; |
c5b7aa15 | 51 | extern mode_t orig_umask; |
c786a7ae | 52 | extern struct stats stats; |
94d3725c | 53 | extern struct chmod_mode_struct *daemon_chmod_modes; |
fe055c71 | 54 | |
595251de | 55 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
ceccbacc WD |
56 | iconv_t ic_chck = (iconv_t)-1; |
57 | ||
2a62f5ee | 58 | static const char *default_charset(void) |
ceccbacc WD |
59 | { |
60 | #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET | |
61 | return locale_charset(); | |
62 | #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO | |
7fc87d2d | 63 | return nl_langinfo(CODESET); |
ceccbacc WD |
64 | #else |
65 | return ""; /* Works with (at the very least) gnu iconv... */ | |
66 | #endif | |
67 | } | |
68 | ||
69 | void setup_iconv() | |
70 | { | |
e0f4a661 WD |
71 | if (!am_server && !allow_8bit_chars) { |
72 | const char *defset = default_charset(); | |
2d2f71fb | 73 | |
e0f4a661 WD |
74 | /* It's OK if this fails... */ |
75 | ic_chck = iconv_open(defset, defset); | |
ceccbacc | 76 | |
e0f4a661 WD |
77 | if (verbose > 3) { |
78 | if (ic_chck == (iconv_t)-1) { | |
79 | rprintf(FINFO, | |
80 | "note: iconv_open(\"%s\", \"%s\") failed (%d)" | |
81 | " -- using isprint() instead of iconv().\n", | |
82 | defset, defset, errno); | |
83 | } else { | |
84 | rprintf(FINFO, | |
85 | "note: iconv_open(\"%s\", \"%s\") succeeded.\n", | |
86 | defset, defset); | |
87 | } | |
7fc87d2d | 88 | } |
ceccbacc WD |
89 | } |
90 | } | |
91 | #endif | |
fe055c71 | 92 | |
c627d613 AT |
93 | /* |
94 | free a sums struct | |
95 | */ | |
2f03f956 | 96 | void free_sums(struct sum_struct *s) |
c627d613 | 97 | { |
298c10d5 AT |
98 | if (s->sums) free(s->sums); |
99 | free(s); | |
c627d613 AT |
100 | } |
101 | ||
81284832 WD |
102 | /* This is only called when we aren't preserving permissions. Figure out what |
103 | * the permissions should be and return them merged back into the mode. */ | |
5ca8a90c | 104 | mode_t dest_mode(mode_t flist_mode, mode_t cur_mode, int exists) |
81284832 | 105 | { |
9b499e95 | 106 | /* If the file already exists, we'll return the local permissions, |
81284832 WD |
107 | * possibly tweaked by the --executability option. */ |
108 | if (exists) { | |
109 | if (preserve_executability && S_ISREG(flist_mode)) { | |
110 | /* If the source file is executable, grant execute | |
111 | * rights to everyone who can read, but ONLY if the | |
112 | * file isn't already executable. */ | |
113 | if (!(flist_mode & 0111)) | |
5ca8a90c WD |
114 | cur_mode &= ~0111; |
115 | else if (!(cur_mode & 0111)) | |
116 | cur_mode |= (cur_mode & 0444) >> 2; | |
81284832 WD |
117 | } |
118 | } else | |
5ca8a90c | 119 | cur_mode = flist_mode & ACCESSPERMS & ~orig_umask; |
94d3725c WD |
120 | if (daemon_chmod_modes && !S_ISLNK(flist_mode)) |
121 | cur_mode = tweak_mode(cur_mode, daemon_chmod_modes); | |
5ca8a90c | 122 | return (flist_mode & ~CHMOD_BITS) | (cur_mode & CHMOD_BITS); |
81284832 WD |
123 | } |
124 | ||
36119f6e WD |
125 | int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st, |
126 | int flags) | |
c627d613 | 127 | { |
667e72a1 AT |
128 | int updated = 0; |
129 | STRUCT_STAT st2; | |
460f6b99 | 130 | int change_uid, change_gid; |
c627d613 | 131 | |
667e72a1 | 132 | if (!st) { |
f227ffe4 WD |
133 | if (dry_run) |
134 | return 1; | |
373ef160 | 135 | if (link_stat(fname, &st2, 0) < 0) { |
d62bcc17 WD |
136 | rsyserr(FERROR, errno, "stat %s failed", |
137 | full_fname(fname)); | |
667e72a1 AT |
138 | return 0; |
139 | } | |
140 | st = &st2; | |
9b499e95 WD |
141 | if (!preserve_perms && S_ISDIR(file->mode) |
142 | && st->st_mode & S_ISGID) { | |
143 | /* We just created this directory and its setgid | |
144 | * bit is on, so make sure it stays on. */ | |
145 | file->mode |= S_ISGID; | |
146 | } | |
667e72a1 | 147 | } |
c627d613 | 148 | |
c8d34657 | 149 | if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times)) |
36119f6e WD |
150 | flags |= ATTRS_SKIP_MTIME; |
151 | if (!(flags & ATTRS_SKIP_MTIME) | |
0f86c74e | 152 | && cmp_time(st->st_mtime, file->modtime) != 0) { |
c8d34657 WD |
153 | int ret = set_modtime(fname, file->modtime, st->st_mode); |
154 | if (ret < 0) { | |
d62bcc17 WD |
155 | rsyserr(FERROR, errno, "failed to set times on %s", |
156 | full_fname(fname)); | |
667e72a1 AT |
157 | return 0; |
158 | } | |
c8d34657 WD |
159 | if (ret == 0) /* ret == 1 if symlink could not be set */ |
160 | updated = 1; | |
667e72a1 AT |
161 | } |
162 | ||
7b6fa00f WD |
163 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
164 | change_gid = preserve_gid && file->gid != GID_NONE | |
165 | && st->st_gid != file->gid; | |
4f5b0756 | 166 | #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK |
a41a1e87 WD |
167 | if (S_ISLNK(st->st_mode)) |
168 | ; | |
169 | else | |
170 | #endif | |
460f6b99 | 171 | if (change_uid || change_gid) { |
62c9e6b3 | 172 | if (verbose > 2) { |
ce37eb2d WD |
173 | if (change_uid) { |
174 | rprintf(FINFO, | |
4875d6b6 | 175 | "set uid of %s from %ld to %ld\n", |
45c49b52 | 176 | fname, |
7b6fa00f | 177 | (long)st->st_uid, (long)file->uid); |
ce37eb2d WD |
178 | } |
179 | if (change_gid) { | |
180 | rprintf(FINFO, | |
4875d6b6 | 181 | "set gid of %s from %ld to %ld\n", |
45c49b52 | 182 | fname, |
7b6fa00f | 183 | (long)st->st_gid, (long)file->gid); |
ce37eb2d WD |
184 | } |
185 | } | |
667e72a1 | 186 | if (do_lchown(fname, |
7b6fa00f WD |
187 | change_uid ? file->uid : st->st_uid, |
188 | change_gid ? file->gid : st->st_gid) != 0) { | |
460f6b99 | 189 | /* shouldn't have attempted to change uid or gid |
a174e1ed | 190 | * unless have the privilege */ |
d62bcc17 | 191 | rsyserr(FERROR, errno, "%s %s failed", |
a174e1ed | 192 | change_uid ? "chown" : "chgrp", |
d62bcc17 | 193 | full_fname(fname)); |
460f6b99 | 194 | return 0; |
667e72a1 | 195 | } |
a5827a28 | 196 | /* a lchown had been done - we have to re-stat if the |
dd096ae0 WD |
197 | * destination had the setuid or setgid bits set due |
198 | * to the side effect of the chown call */ | |
a5827a28 | 199 | if (st->st_mode & (S_ISUID | S_ISGID)) { |
81b07870 WD |
200 | link_stat(fname, st, |
201 | keep_dirlinks && S_ISDIR(st->st_mode)); | |
a5827a28 | 202 | } |
460f6b99 | 203 | updated = 1; |
667e72a1 | 204 | } |
c627d613 | 205 | |
4f5b0756 | 206 | #ifdef HAVE_CHMOD |
c8d34657 WD |
207 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
208 | int ret = do_chmod(fname, file->mode); | |
209 | if (ret < 0) { | |
210 | rsyserr(FERROR, errno, | |
211 | "failed to set permissions on %s", | |
212 | full_fname(fname)); | |
213 | return 0; | |
667e72a1 | 214 | } |
c8d34657 WD |
215 | if (ret == 0) /* ret == 1 if symlink could not be set */ |
216 | updated = 1; | |
667e72a1 | 217 | } |
c627d613 | 218 | #endif |
6a7cc46c | 219 | |
36119f6e | 220 | if (verbose > 1 && flags & ATTRS_REPORT) { |
8324bd5c WD |
221 | enum logcode code = daemon_log_format_has_i || dry_run |
222 | ? FCLIENT : FINFO; | |
667e72a1 | 223 | if (updated) |
45c49b52 | 224 | rprintf(code, "%s\n", fname); |
667e72a1 | 225 | else |
45c49b52 | 226 | rprintf(code, "%s is uptodate\n", fname); |
667e72a1 AT |
227 | } |
228 | return updated; | |
c627d613 AT |
229 | } |
230 | ||
b8e9c234 | 231 | RETSIGTYPE sig_int(UNUSED(int val)) |
34ccb63e | 232 | { |
d5a0b483 WD |
233 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
234 | * for a password, then our cleanup's sending of a SIGUSR1 | |
235 | * signal to all our children may kill ssh before it has a | |
236 | * chance to restore the tty settings (i.e. turn echo back | |
237 | * on). By sleeping for a short time, ssh gets a bigger | |
238 | * chance to do the right thing. If child processes are | |
239 | * not ssh waiting for a password, then this tiny delay | |
240 | * shouldn't hurt anything. */ | |
241 | msleep(400); | |
65417579 | 242 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
243 | } |
244 | ||
d8b1c923 WD |
245 | /* Finish off a file transfer: renaming the file and setting the file's |
246 | * attributes (e.g. permissions, ownership, etc.). If partialptr is not | |
247 | * NULL and the robust_rename() call is forced to copy the temp file, we | |
248 | * stage the file into the partial-dir and then rename it into place. */ | |
249 | void finish_transfer(char *fname, char *fnametmp, char *partialptr, | |
250 | struct file_struct *file, int ok_to_set_time, | |
251 | int overwriting_basis) | |
c95da96a | 252 | { |
62c9e6b3 WD |
253 | int ret; |
254 | ||
a3221d2a WD |
255 | if (inplace) { |
256 | if (verbose > 2) | |
45c49b52 | 257 | rprintf(FINFO, "finishing %s\n", fname); |
d8b1c923 | 258 | fnametmp = fname; |
36119f6e | 259 | goto do_set_file_attrs; |
a3221d2a WD |
260 | } |
261 | ||
997d9ea6 | 262 | if (make_backups && overwriting_basis && !make_backup(fname)) |
e484f0cc WD |
263 | return; |
264 | ||
ebeacb36 | 265 | /* Change permissions before putting the file into place. */ |
36119f6e WD |
266 | set_file_attrs(fnametmp, file, NULL, |
267 | ok_to_set_time ? 0 : ATTRS_SKIP_MTIME); | |
ebeacb36 | 268 | |
c95da96a | 269 | /* move tmp file over real file */ |
45c49b52 WD |
270 | if (verbose > 2) |
271 | rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname); | |
d8b1c923 WD |
272 | ret = robust_rename(fnametmp, fname, partialptr, |
273 | file->mode & INITACCESSPERMS); | |
3d061653 | 274 | if (ret < 0) { |
d62bcc17 | 275 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
45c49b52 WD |
276 | ret == -2 ? "copy" : "rename", |
277 | full_fname(fnametmp), fname); | |
c7c11a0d | 278 | do_unlink(fnametmp); |
077e59b7 | 279 | return; |
c95da96a | 280 | } |
ebeacb36 WD |
281 | if (ret == 0) { |
282 | /* The file was moved into place (not copied), so it's done. */ | |
283 | return; | |
284 | } | |
d8b1c923 WD |
285 | /* The file was copied, so tweak the perms of the copied file. If it |
286 | * was copied to partialptr, move it into its final destination. */ | |
287 | fnametmp = partialptr ? partialptr : fname; | |
288 | ||
36119f6e | 289 | do_set_file_attrs: |
d8b1c923 | 290 | set_file_attrs(fnametmp, file, NULL, |
36119f6e | 291 | ok_to_set_time ? 0 : ATTRS_SKIP_MTIME); |
d8b1c923 WD |
292 | |
293 | if (partialptr) { | |
294 | if (do_rename(fnametmp, fname) < 0) { | |
295 | rsyserr(FERROR, errno, "rename %s -> \"%s\"", | |
296 | full_fname(fnametmp), fname); | |
297 | } else | |
298 | handle_partial_dir(partialptr, PDIR_DELETE); | |
299 | } | |
c95da96a | 300 | } |
c3e5e585 WD |
301 | |
302 | const char *who_am_i(void) | |
303 | { | |
ed9d969c | 304 | if (am_starting_up) |
794b0a03 | 305 | return am_server ? "server" : "client"; |
ebeacb36 | 306 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; |
c3e5e585 | 307 | } |