- Made flist_find() and receive_file_entry() static functions.
[rsync.git] / options.c
1 /*  -*- c-file-style: "linux" -*-
2  *
3  * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
4  * Copyright (C) 2000, 2001, 2002 by Martin Pool <mbp@samba.org>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  */
20
21 #include "rsync.h"
22 #include "popt.h"
23
24 extern int module_id;
25 extern int sanitize_paths;
26 extern int select_timeout;
27 extern struct filter_list_struct filter_list;
28 extern struct filter_list_struct server_filter_list;
29
30 int make_backups = 0;
31
32 /**
33  * If 1, send the whole file as literal data rather than trying to
34  * create an incremental diff.
35  *
36  * If -1, then look at whether we're local or remote and go by that.
37  *
38  * @sa disable_deltas_p()
39  **/
40 int whole_file = -1;
41
42 int archive_mode = 0;
43 int keep_dirlinks = 0;
44 int copy_links = 0;
45 int preserve_links = 0;
46 int preserve_hard_links = 0;
47 int preserve_perms = 0;
48 int preserve_devices = 0;
49 int preserve_uid = 0;
50 int preserve_gid = 0;
51 int preserve_times = 0;
52 int omit_dir_times = 0;
53 int update_only = 0;
54 int cvs_exclude = 0;
55 int dry_run = 0;
56 int local_server = 0;
57 int ignore_times = 0;
58 int delete_mode = 0;
59 int delete_during = 0;
60 int delete_before = 0;
61 int delete_after = 0;
62 int delete_excluded = 0;
63 int one_file_system = 0;
64 int protocol_version = PROTOCOL_VERSION;
65 int sparse_files = 0;
66 int do_compression = 0;
67 int am_root = 0;
68 int orig_umask = 0;
69 int relative_paths = -1;
70 int implied_dirs = 1;
71 int numeric_ids = 0;
72 int force_delete = 0;
73 int io_timeout = 0;
74 int am_server = 0;
75 int am_sender = 0;
76 int am_generator = 0;
77 char *files_from = NULL;
78 int filesfrom_fd = -1;
79 char *remote_filesfrom_file = NULL;
80 int eol_nulls = 0;
81 int recurse = 0;
82 int xfer_dirs = 0;
83 int am_daemon = 0;
84 int daemon_over_rsh = 0;
85 int do_stats = 0;
86 int do_progress = 0;
87 int keep_partial = 0;
88 int safe_symlinks = 0;
89 int copy_unsafe_links = 0;
90 int size_only = 0;
91 int daemon_bwlimit = 0;
92 int bwlimit = 0;
93 size_t bwlimit_writemax = 0;
94 int only_existing = 0;
95 int opt_ignore_existing = 0;
96 int max_delete = 0;
97 OFF_T max_size = 0;
98 int ignore_errors = 0;
99 int modify_window = 0;
100 int blocking_io = -1;
101 int checksum_seed = 0;
102 int inplace = 0;
103 int delay_updates = 0;
104 long block_size = 0; /* "long" because popt can't set an int32. */
105
106
107 /** Network address family. **/
108 #if INET6
109 int default_af_hint = 0;        /* Any protocol */
110 #else
111 int default_af_hint = AF_INET;  /* Must use IPv4 */
112 #endif
113
114 /** Do not go into the background when run as --daemon.  Good
115  * for debugging and required for running as a service on W32,
116  * or under Unix process-monitors. **/
117 int no_detach = 0;
118
119 int write_batch = 0;
120 int read_batch = 0;
121 int backup_dir_len = 0;
122 int backup_suffix_len;
123 unsigned int backup_dir_remainder;
124
125 char *backup_suffix = NULL;
126 char *tmpdir = NULL;
127 char *partial_dir = NULL;
128 char *basis_dir[MAX_BASIS_DIRS+1];
129 char *config_file = NULL;
130 char *shell_cmd = NULL;
131 char *log_format = NULL;
132 char *password_file = NULL;
133 char *rsync_path = RSYNC_PATH;
134 char *backup_dir = NULL;
135 char backup_dir_buf[MAXPATHLEN];
136 int rsync_port = 0;
137 int compare_dest = 0;
138 int copy_dest = 0;
139 int link_dest = 0;
140 int basis_dir_cnt = 0;
141
142 int verbose = 0;
143 int quiet = 0;
144 int always_checksum = 0;
145 int list_only = 0;
146
147 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
148 char *batch_name = NULL;
149
150 static int daemon_opt;   /* sets am_daemon after option error-reporting */
151 static int F_option_cnt = 0;
152 static int modify_window_set;
153 static char *dest_option = NULL;
154 static char *max_size_arg;
155
156 /** Local address to bind.  As a character string because it's
157  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
158  * address, or a hostname. **/
159 char *bind_address;
160
161
162 static void print_rsync_version(enum logcode f)
163 {
164         char const *got_socketpair = "no ";
165         char const *have_inplace = "no ";
166         char const *hardlinks = "no ";
167         char const *links = "no ";
168         char const *ipv6 = "no ";
169         STRUCT_STAT *dumstat;
170
171 #if HAVE_SOCKETPAIR
172         got_socketpair = "";
173 #endif
174
175 #if HAVE_FTRUNCATE
176         have_inplace = "";
177 #endif
178
179 #if SUPPORT_HARD_LINKS
180         hardlinks = "";
181 #endif
182
183 #if SUPPORT_LINKS
184         links = "";
185 #endif
186
187 #if INET6
188         ipv6 = "";
189 #endif
190
191         rprintf(f, "%s  version %s  protocol version %d\n",
192                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
193         rprintf(f,
194                 "Copyright (C) 1996-2005 by Andrew Tridgell and others\n");
195         rprintf(f, "<http://rsync.samba.org/>\n");
196         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
197                 "%shard links, %ssymlinks, batchfiles, \n",
198                 (int) (sizeof (OFF_T) * 8),
199                 got_socketpair, hardlinks, links);
200
201         /* Note that this field may not have type ino_t.  It depends
202          * on the complicated interaction between largefile feature
203          * macros. */
204         rprintf(f, "              %sinplace, %sIPv6, %d-bit system inums, %d-bit internal inums\n",
205                 have_inplace, ipv6,
206                 (int) (sizeof dumstat->st_ino * 8),
207                 (int) (sizeof (int64) * 8));
208 #ifdef MAINTAINER_MODE
209         rprintf(f, "              panic action: \"%s\"\n",
210                 get_panic_action());
211 #endif
212
213 #if SIZEOF_INT64 < 8
214         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
215 #endif
216         if (sizeof (int64) != SIZEOF_INT64) {
217                 rprintf(f,
218                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
219                         (int) SIZEOF_INT64, (int) sizeof (int64));
220         }
221
222         rprintf(f,
223 "\n"
224 "rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n"
225 "are welcome to redistribute it under certain conditions.  See the GNU\n"
226 "General Public Licence for details.\n"
227                 );
228 }
229
230
231 void usage(enum logcode F)
232 {
233   print_rsync_version(F);
234
235   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\nvia a fast differencing algorithm.\n\n");
236
237   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
238   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC DEST\n");
239   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... DEST\n");
240   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
241   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
242   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
243   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
244   rprintf(F,"SRC on single-colon remote HOST will be expanded by remote shell\n");
245   rprintf(F,"SRC on server remote HOST may contain shell wildcards or multiple\n");
246   rprintf(F,"  sources separated by space as long as they have same top-level\n");
247   rprintf(F,"\nOptions\n");
248   rprintf(F," -v, --verbose               increase verbosity\n");
249   rprintf(F," -q, --quiet                 suppress non-error messages\n");
250   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
251   rprintf(F," -a, --archive               archive mode; same as -rlptgoD (no -H)\n");
252   rprintf(F," -r, --recursive             recurse into directories\n");
253   rprintf(F," -R, --relative              use relative path names\n");
254   rprintf(F,"     --no-relative           turn off --relative\n");
255   rprintf(F,"     --no-implied-dirs       don't send implied dirs with -R\n");
256   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
257   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
258   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
259   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
260   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
261   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
262   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
263   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
264   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
265   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
266   rprintf(F," -H, --hard-links            preserve hard links\n");
267   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
268   rprintf(F," -p, --perms                 preserve permissions\n");
269   rprintf(F," -o, --owner                 preserve owner (root only)\n");
270   rprintf(F," -g, --group                 preserve group\n");
271   rprintf(F," -D, --devices               preserve devices (root only)\n");
272   rprintf(F," -t, --times                 preserve times\n");
273   rprintf(F," -O, --omit-dir-times        omit directories when preserving times\n");
274   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
275   rprintf(F," -n, --dry-run               show what would have been transferred\n");
276   rprintf(F," -W, --whole-file            copy files whole\n");
277   rprintf(F,"     --no-whole-file         always use incremental rsync algorithm\n");
278   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
279   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
280   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
281   rprintf(F,"     --rsync-path=PATH       specify path to rsync on the remote machine\n");
282   rprintf(F,"     --existing              only update files that already exist on receiver\n");
283   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
284   rprintf(F,"     --del                   an alias for --delete-during\n");
285   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
286   rprintf(F,"     --delete-before         receiver deletes before transfer (default)\n");
287   rprintf(F,"     --delete-during         receiver deletes during transfer, not before\n");
288   rprintf(F,"     --delete-after          receiver deletes after transfer, not before\n");
289   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
290   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
291   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
292   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
293   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
294   rprintf(F,"     --partial               keep partially transferred files\n");
295   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
296   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
297   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
298   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
299   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
300   rprintf(F,"     --size-only             skip files that match in size\n");
301   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
302   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
303   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
304   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
305   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
306   rprintf(F," -z, --compress              compress file data\n");
307   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
308   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
309   rprintf(F," -F                          same as --filter=': /.rsync-filter'\n");
310   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
311   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
312   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
313   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
314   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
315   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
316   rprintf(F," -0, --from0                 all *-from file lists are delimited by nulls\n");
317   rprintf(F,"     --version               print version number\n");
318   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
319   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
320   rprintf(F,"     --no-blocking-io        turn off blocking I/O when it is the default\n");
321   rprintf(F,"     --stats                 give some file-transfer stats\n");
322   rprintf(F,"     --progress              show progress during transfer\n");
323   rprintf(F," -P                          same as --partial --progress\n");
324   rprintf(F,"     --log-format=FORMAT     log file-transfers using specified format\n");
325   rprintf(F,"     --password-file=FILE    read password from FILE\n");
326   rprintf(F,"     --list-only             list the files instead of copying them\n");
327   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
328   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
329   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
330 #if INET6
331   rprintf(F," -4, --ipv4                  prefer IPv4\n");
332   rprintf(F," -6, --ipv6                  prefer IPv6\n");
333 #endif
334   rprintf(F," -h, --help                  show this help screen\n");
335
336   rprintf(F,"\nUse \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
337   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
338   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
339 }
340
341 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
342       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST,
343       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW,
344       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_TIMEOUT, OPT_MAX_SIZE,
345       OPT_REFUSED_BASE = 9000};
346
347 static struct poptOption long_options[] = {
348   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
349   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
350   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
351   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
352   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
353   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
354   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
355   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
356   {"one-file-system", 'x', POPT_ARG_NONE,   &one_file_system, 0, 0, 0 },
357   {"existing",         0,  POPT_ARG_NONE,   &only_existing, 0, 0, 0 },
358   {"ignore-existing",  0,  POPT_ARG_NONE,   &opt_ignore_existing, 0, 0, 0 },
359   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
360   {"delete-before",    0,  POPT_ARG_VAL,    &delete_before, 2, 0, 0 },
361   {"delete-during",    0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
362   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
363   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
364   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
365   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
366   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
367   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
368   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
369   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
370   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
371   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
372   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
373   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
374   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
375   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
376   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
377   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
378   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
379   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
380   {"links",           'l', POPT_ARG_NONE,   &preserve_links, 0, 0, 0 },
381   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
382   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
383   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
384   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
385   {"copy-unsafe-links", 0, POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
386   {"perms",           'p', POPT_ARG_NONE,   &preserve_perms, 0, 0, 0 },
387   {"owner",           'o', POPT_ARG_NONE,   &preserve_uid, 0, 0, 0 },
388   {"group",           'g', POPT_ARG_NONE,   &preserve_gid, 0, 0, 0 },
389   {"devices",         'D', POPT_ARG_NONE,   &preserve_devices, 0, 0, 0 },
390   {"times",           't', POPT_ARG_NONE,   &preserve_times, 0, 0, 0 },
391   {"omit-dir-times",  'O', POPT_ARG_NONE,   &omit_dir_times, 0, 0, 0 },
392   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
393   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
394   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
395   {"archive",         'a', POPT_ARG_NONE,   &archive_mode, 0, 0, 0 },
396   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
397   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
398   {"recursive",       'r', POPT_ARG_VAL,    &recurse, -1, 0, 0 },
399   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
400   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
401   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
402   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
403   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
404   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
405   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg,  OPT_MAX_SIZE, 0, 0 },
406   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, OPT_TIMEOUT, 0, 0 },
407   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
408   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
409   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
410   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
411   /* TODO: Should this take an optional int giving the compression level? */
412   {"compress",        'z', POPT_ARG_NONE,   &do_compression, 0, 0, 0 },
413   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
414   {"progress",         0,  POPT_ARG_NONE,   &do_progress, 0, 0, 0 },
415   {"partial",          0,  POPT_ARG_NONE,   &keep_partial, 0, 0, 0 },
416   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
417   {"delay-updates",    0,  POPT_ARG_NONE,   &delay_updates, 0, 0, 0 },
418   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
419   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
420   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
421   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
422   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
423   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
424   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
425   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
426   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
427   {"hard-links",      'H', POPT_ARG_NONE,   &preserve_hard_links, 0, 0, 0 },
428   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
429   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
430   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
431   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
432   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
433   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
434   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
435 #if INET6
436   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
437   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
438 #endif
439   /* All these options switch us into daemon-mode option-parsing. */
440   {"address",          0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
441   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
442   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
443   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
444   {0,0,0,0, 0, 0, 0}
445 };
446
447 static void daemon_usage(enum logcode F)
448 {
449   print_rsync_version(F);
450
451   rprintf(F,"\nUsage: rsync --daemon [OPTION]...\n");
452   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
453   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
454   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
455   rprintf(F,"     --no-detach             do not detach from the parent\n");
456   rprintf(F,"     --port=PORT             listen on alternate port number\n");
457   rprintf(F," -v, --verbose               increase verbosity\n");
458 #if INET6
459   rprintf(F," -4, --ipv4                  prefer IPv4\n");
460   rprintf(F," -6, --ipv6                  prefer IPv6\n");
461 #endif
462   rprintf(F," -h, --help                  show this help screen\n");
463
464   rprintf(F,"\nIf you were not trying to invoke rsync as a daemon, avoid using any of the\n");
465   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
466 }
467
468 static struct poptOption long_daemon_options[] = {
469   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
470   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
471   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
472   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
473   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
474 #if INET6
475   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
476   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
477 #endif
478   {"no-detach",        0,  POPT_ARG_NONE,   &no_detach, 0, 0, 0 },
479   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
480   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
481   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
482   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
483   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
484   {0,0,0,0, 0, 0, 0}
485 };
486
487
488 static char err_buf[200];
489
490
491 /**
492  * Store the option error message, if any, so that we can log the
493  * connection attempt (which requires parsing the options), and then
494  * show the error later on.
495  **/
496 void option_error(void)
497 {
498         if (!err_buf[0]) {
499                 strcpy(err_buf, "Error parsing options: "
500                     "option may be supported on client but not on server?\n");
501         }
502
503         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
504 }
505
506
507 /**
508  * Tweak the option table to disable all options that the rsyncd.conf
509  * file has told us to refuse.
510  **/
511 static void set_refuse_options(char *bp)
512 {
513         struct poptOption *op;
514         char *cp, shortname[2];
515         int is_wild, found_match;
516
517         shortname[1] = '\0';
518
519         while (1) {
520                 while (*bp == ' ') bp++;
521                 if (!*bp)
522                         break;
523                 if ((cp = strchr(bp, ' ')) != NULL)
524                         *cp= '\0';
525                 /* If they specify "delete", reject all delete options. */
526                 if (strcmp(bp, "delete") == 0)
527                         bp = "delete*";
528                 is_wild = strpbrk(bp, "*?[") != NULL;
529                 found_match = 0;
530                 for (op = long_options; ; op++) {
531                         *shortname = op->shortName;
532                         if (!op->longName && !*shortname)
533                                 break;
534                         if ((op->longName && wildmatch(bp, op->longName))
535                             || (*shortname && wildmatch(bp, shortname))) {
536                                 if (op->argInfo == POPT_ARG_VAL)
537                                         op->argInfo = POPT_ARG_NONE;
538                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
539                                 found_match = 1;
540                                 if (!is_wild)
541                                         break;
542                         }
543                 }
544                 if (!found_match) {
545                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
546                                 bp);
547                 }
548                 if (!cp)
549                         break;
550                 *cp = ' ';
551                 bp = cp + 1;
552         }
553 }
554
555
556 static int count_args(const char **argv)
557 {
558         int i = 0;
559
560         if (argv) {
561                 while (argv[i] != NULL)
562                         i++;
563         }
564
565         return i;
566 }
567
568
569 /**
570  * Process command line arguments.  Called on both local and remote.
571  *
572  * @retval 1 if all options are OK; with globals set to appropriate
573  * values
574  *
575  * @retval 0 on error, with err_buf containing an explanation
576  **/
577 int parse_arguments(int *argc, const char ***argv, int frommain)
578 {
579         int opt;
580         char *ref = lp_refuse_options(module_id);
581         const char *arg;
582         poptContext pc;
583
584         if (ref && *ref)
585                 set_refuse_options(ref);
586
587         /* TODO: Call poptReadDefaultConfig; handle errors. */
588
589         /* The context leaks in case of an error, but if there's a
590          * problem we always exit anyhow. */
591         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
592         {
593                 struct poptAlias my_alias;
594                 char **argv = new_array(char *, 1);
595                 argv[0] = strdup("--delete-during");
596                 my_alias.longName = "del", my_alias.shortName = '\0';
597                 my_alias.argc = 1;
598                 my_alias.argv = (const char **)argv;
599                 if (argv && argv[0])
600                         poptAddAlias(pc, my_alias, 0);
601         }
602         poptReadDefaultConfig(pc, 0);
603
604         while ((opt = poptGetNextOpt(pc)) != -1) {
605                 /* most options are handled automatically by popt;
606                  * only special cases are returned and listed here. */
607
608                 switch (opt) {
609                 case OPT_VERSION:
610                         print_rsync_version(FINFO);
611                         exit_cleanup(0);
612
613                 case OPT_DAEMON:
614                         if (am_daemon) {
615                                 strcpy(err_buf, "Attempt to hack rsync thwarted!\n");
616                                 return 0;
617                         }
618                         poptFreeContext(pc);
619                         pc = poptGetContext(RSYNC_NAME, *argc, *argv,
620                                             long_daemon_options, 0);
621                         while ((opt = poptGetNextOpt(pc)) != -1) {
622                                 switch (opt) {
623                                 case 'h':
624                                         daemon_usage(FINFO);
625                                         exit_cleanup(0);
626
627                                 case 'v':
628                                         verbose++;
629                                         break;
630
631                                 default:
632                                         rprintf(FERROR,
633                                             "rsync: %s: %s (in daemon mode)\n",
634                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
635                                             poptStrerror(opt));
636                                         goto daemon_error;
637                                 }
638                         }
639                         if (!daemon_opt) {
640                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
641                             daemon_error:
642                                 rprintf(FERROR,
643                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
644                                 exit_cleanup(RERR_SYNTAX);
645                         }
646                         *argv = poptGetArgs(pc);
647                         *argc = count_args(*argv);
648                         daemon_opt = 0;
649                         am_daemon = 1;
650                         return 1;
651
652                 case OPT_MODIFY_WINDOW:
653                         /* The value has already been set by popt, but
654                          * we need to remember that we're using a
655                          * non-default setting. */
656                         modify_window_set = 1;
657                         break;
658
659                 case OPT_FILTER:
660                         add_filter(&filter_list, poptGetOptArg(pc), 0);
661                         break;
662
663                 case OPT_EXCLUDE:
664                         add_filter(&filter_list, poptGetOptArg(pc),
665                                    XFLG_DEF_EXCLUDE);
666                         break;
667
668                 case OPT_INCLUDE:
669                         add_filter(&filter_list, poptGetOptArg(pc),
670                                    XFLG_DEF_INCLUDE);
671                         break;
672
673                 case OPT_EXCLUDE_FROM:
674                 case OPT_INCLUDE_FROM:
675                         arg = poptGetOptArg(pc);
676                         if (sanitize_paths)
677                                 arg = sanitize_path(NULL, arg, NULL, 0);
678                         if (server_filter_list.head) {
679                                 char *cp = (char *)arg;
680                                 clean_fname(cp, 1);
681                                 if (check_filter(&server_filter_list, cp, 0) < 0)
682                                         goto options_rejected;
683                         }
684                         add_filter_file(&filter_list, arg, XFLG_FATAL_ERRORS
685                                 | (opt == OPT_INCLUDE_FROM ? XFLG_DEF_INCLUDE
686                                                            : XFLG_DEF_EXCLUDE));
687                         break;
688
689                 case 'h':
690                         usage(FINFO);
691                         exit_cleanup(0);
692
693                 case 'v':
694                         verbose++;
695                         break;
696
697                 case 'q':
698                         if (frommain)
699                                 quiet++;
700                         break;
701
702                 case OPT_SENDER:
703                         if (!am_server) {
704                                 usage(FERROR);
705                                 exit_cleanup(RERR_SYNTAX);
706                         }
707                         am_sender = 1;
708                         break;
709
710                 case 'F':
711                         switch (++F_option_cnt) {
712                         case 1:
713                                 add_filter(&filter_list,
714                                             ": /.rsync-filter", 0);
715                                 break;
716                         case 2:
717                                 add_filter(&filter_list,
718                                             "- .rsync-filter", 0);
719                                 break;
720                         }
721                         break;
722
723                 case 'P':
724                         do_progress = 1;
725                         keep_partial = 1;
726                         break;
727
728                 case OPT_WRITE_BATCH:
729                         /* batch_name is already set */
730                         write_batch = 1;
731                         break;
732
733                 case OPT_READ_BATCH:
734                         /* batch_name is already set */
735                         read_batch = 1;
736                         break;
737
738                 case OPT_MAX_SIZE:
739                         for (arg = max_size_arg; isdigit(*(uchar*)arg); arg++) {}
740                         if (*arg == '.')
741                                 for (arg++; isdigit(*(uchar*)arg); arg++) {}
742                         switch (*arg) {
743                         case 'k': case 'K':
744                                 max_size = atof(max_size_arg) * 1024;
745                                 break;
746                         case 'm': case 'M':
747                                 max_size = atof(max_size_arg) * 1024*1024;
748                                 break;
749                         case 'g': case 'G':
750                                 max_size = atof(max_size_arg) * 1024*1024*1024;
751                                 break;
752                         case '\0':
753                                 max_size = atof(max_size_arg);
754                                 break;
755                         default:
756                                 max_size = 0;
757                                 break;
758                         }
759                         if (max_size <= 0) {
760                                 snprintf(err_buf, sizeof err_buf,
761                                         "--max-size value is invalid: %s\n",
762                                         max_size_arg);
763                                 return 0;
764                         }
765                         break;
766
767                 case OPT_TIMEOUT:
768                         if (io_timeout && io_timeout < select_timeout)
769                                 select_timeout = io_timeout;
770                         break;
771
772                 case OPT_LINK_DEST:
773 #if HAVE_LINK
774                         link_dest = 1;
775                         dest_option = "--link-dest";
776                         goto set_dest_dir;
777 #else
778                         snprintf(err_buf, sizeof err_buf,
779                                  "hard links are not supported on this %s\n",
780                                  am_server ? "server" : "client");
781                         return 0;
782 #endif
783
784                 case OPT_COPY_DEST:
785                         copy_dest = 1;
786                         dest_option = "--copy-dest";
787                         goto set_dest_dir;
788
789                 case OPT_COMPARE_DEST:
790                         compare_dest = 1;
791                         dest_option = "--compare-dest";
792                 set_dest_dir:
793                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
794                                 snprintf(err_buf, sizeof err_buf,
795                                         "ERROR: at most %d %s args may be specified\n",
796                                         MAX_BASIS_DIRS, dest_option);
797                                 return 0;
798                         }
799                         arg = poptGetOptArg(pc);
800                         if (sanitize_paths)
801                                 arg = sanitize_path(NULL, arg, NULL, 0);
802                         basis_dir[basis_dir_cnt++] = (char *)arg;
803                         break;
804
805                 default:
806                         /* A large opt value means that set_refuse_options()
807                          * turned this option off (opt-BASE is its index). */
808                         if (opt >= OPT_REFUSED_BASE) {
809                                 struct poptOption *op =
810                                     &long_options[opt-OPT_REFUSED_BASE];
811                                 int n = snprintf(err_buf, sizeof err_buf,
812                                     "The server is configured to refuse --%s\n",
813                                     op->longName) - 1;
814                                 if (op->shortName) {
815                                         snprintf(err_buf+n, sizeof err_buf-n,
816                                             " (-%c)\n", op->shortName);
817                                 }
818                         } else {
819                                 snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
820                                     am_server ? "on remote machine: " : "",
821                                     poptBadOption(pc, POPT_BADOPTION_NOALIAS),
822                                     poptStrerror(opt));
823                         }
824                         return 0;
825                 }
826         }
827
828 #if !SUPPORT_LINKS
829         if (preserve_links && !am_sender) {
830                 snprintf(err_buf, sizeof err_buf,
831                          "symlinks are not supported on this %s\n",
832                          am_server ? "server" : "client");
833                 return 0;
834         }
835 #endif
836
837 #if !SUPPORT_HARD_LINKS
838         if (preserve_hard_links) {
839                 snprintf(err_buf, sizeof err_buf,
840                          "hard links are not supported on this %s\n",
841                          am_server ? "server" : "client");
842                 return 0;
843         }
844 #endif
845
846         if (write_batch && read_batch) {
847                 snprintf(err_buf, sizeof err_buf,
848                         "--write-batch and --read-batch can not be used together\n");
849                 return 0;
850         }
851         if (write_batch || read_batch) {
852                 if (dry_run) {
853                         snprintf(err_buf, sizeof err_buf,
854                                 "--%s-batch cannot be used with --dry_run (-n)\n",
855                                 write_batch ? "write" : "read");
856                         return 0;
857                 }
858                 if (am_server) {
859                         rprintf(FINFO,
860                                 "ignoring --%s-batch option sent to server\n",
861                                 write_batch ? "write" : "read");
862                         /* We don't actually exit_cleanup(), so that we can
863                          * still service older version clients that still send
864                          * batch args to server. */
865                         read_batch = write_batch = 0;
866                         batch_name = NULL;
867                 }
868         }
869         if (read_batch && files_from) {
870                 snprintf(err_buf, sizeof err_buf,
871                         "--read-batch cannot be used with --files-from\n");
872                 return 0;
873         }
874         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
875                 snprintf(err_buf, sizeof err_buf,
876                         "the batch-file name must be %d characters or less.\n",
877                         MAX_BATCH_NAME_LEN);
878                 return 0;
879         }
880
881         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
882                 snprintf(err_buf, sizeof err_buf,
883                          "the --temp-dir path is WAY too long.\n");
884                 return 0;
885         }
886
887         if (compare_dest + copy_dest + link_dest > 1) {
888                 snprintf(err_buf, sizeof err_buf,
889                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
890                 return 0;
891         }
892
893         if (archive_mode) {
894                 if (!files_from)
895                         recurse = -1; /* infinite recursion */
896 #if SUPPORT_LINKS
897                 preserve_links = 1;
898 #endif
899                 preserve_perms = 1;
900                 preserve_times = 1;
901                 preserve_gid = 1;
902                 preserve_uid = 1;
903                 preserve_devices = 1;
904         }
905
906         if (recurse || list_only || files_from)
907                 xfer_dirs |= 1;
908
909         if (relative_paths < 0)
910                 relative_paths = files_from? 1 : 0;
911
912         if (!!delete_before + delete_during + delete_after > 1) {
913                 snprintf(err_buf, sizeof err_buf,
914                         "You may not combine multiple --delete-WHEN options.\n");
915                 return 0;
916         }
917         if (!recurse) {
918                 delete_before = delete_during = delete_after = 0;
919                 delete_mode = delete_excluded = 0;
920         } else if (delete_before || delete_during || delete_after)
921                 delete_mode = 1;
922         else if (delete_mode || delete_excluded)
923                 delete_mode = delete_before = 1;
924
925         *argv = poptGetArgs(pc);
926         *argc = count_args(*argv);
927
928         if (sanitize_paths) {
929                 int i;
930                 for (i = *argc; i-- > 0; )
931                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
932                 if (tmpdir)
933                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
934                 if (partial_dir)
935                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
936                 if (backup_dir)
937                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
938                 if (files_from)
939                         files_from = sanitize_path(NULL, files_from, NULL, 0);
940         }
941         if (server_filter_list.head && !am_sender) {
942                 struct filter_list_struct *elp = &server_filter_list;
943                 int i;
944                 if (tmpdir) {
945                         clean_fname(tmpdir, 1);
946                         if (check_filter(elp, tmpdir, 1) < 0)
947                                 goto options_rejected;
948                 }
949                 if (partial_dir) {
950                         clean_fname(partial_dir, 1);
951                         if (check_filter(elp, partial_dir, 1) < 0)
952                                 goto options_rejected;
953                 }
954                 for (i = 0; i < basis_dir_cnt; i++) {
955                         clean_fname(basis_dir[i], 1);
956                         if (check_filter(elp, basis_dir[i], 1) < 0)
957                                 goto options_rejected;
958                 }
959                 if (backup_dir) {
960                         clean_fname(backup_dir, 1);
961                         if (check_filter(elp, backup_dir, 1) < 0)
962                                 goto options_rejected;
963                 }
964         }
965         if (server_filter_list.head && files_from) {
966                 clean_fname(files_from, 1);
967                 if (check_filter(&server_filter_list, files_from, 0) < 0) {
968                     options_rejected:
969                         snprintf(err_buf, sizeof err_buf,
970                             "Your options have been rejected by the server.\n");
971                         return 0;
972                 }
973         }
974
975         if (!backup_suffix)
976                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
977         backup_suffix_len = strlen(backup_suffix);
978         if (strchr(backup_suffix, '/') != NULL) {
979                 snprintf(err_buf, sizeof err_buf,
980                         "--suffix cannot contain slashes: %s\n",
981                         backup_suffix);
982                 return 0;
983         }
984         if (backup_dir) {
985                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
986                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
987                 if (backup_dir_remainder < 32) {
988                         snprintf(err_buf, sizeof err_buf,
989                                 "the --backup-dir path is WAY too long.\n");
990                         return 0;
991                 }
992                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
993                         backup_dir_buf[backup_dir_len++] = '/';
994                         backup_dir_buf[backup_dir_len] = '\0';
995                 }
996                 if (verbose > 1 && !am_sender)
997                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
998         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
999                 snprintf(err_buf, sizeof err_buf,
1000                         "--suffix cannot be a null string without --backup-dir\n");
1001                 return 0;
1002         }
1003
1004         if (do_progress && !verbose)
1005                 verbose = 1;
1006
1007         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1008                 bwlimit = daemon_bwlimit;
1009         if (bwlimit) {
1010                 bwlimit_writemax = (size_t)bwlimit * 128;
1011                 if (bwlimit_writemax < 512)
1012                         bwlimit_writemax = 512;
1013         }
1014
1015         if (delay_updates && !partial_dir)
1016                 partial_dir = ".~tmp~";
1017
1018         if (inplace) {
1019 #if HAVE_FTRUNCATE
1020                 if (partial_dir) {
1021                         snprintf(err_buf, sizeof err_buf,
1022                                  "--inplace cannot be used with --%s\n",
1023                                  delay_updates ? "delay-updates" : "partial-dir");
1024                         return 0;
1025                 }
1026                 keep_partial = 0;
1027 #else
1028                 snprintf(err_buf, sizeof err_buf,
1029                          "--inplace is not supported on this %s\n",
1030                          am_server ? "server" : "client");
1031                 return 0;
1032 #endif
1033         } else {
1034                 if (keep_partial && !partial_dir)
1035                         partial_dir = getenv("RSYNC_PARTIAL_DIR");
1036                 if (partial_dir) {
1037                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1038                                 partial_dir = NULL;
1039                         else if (*partial_dir != '/') {
1040                                 add_filter(&filter_list, partial_dir,
1041                                             XFLG_DIRECTORY | XFLG_DEF_EXCLUDE);
1042                         }
1043                         keep_partial = 1;
1044                 }
1045         }
1046
1047         if (files_from) {
1048                 char *colon;
1049                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
1050                         usage(FERROR);
1051                         exit_cleanup(RERR_SYNTAX);
1052                 }
1053                 if (strcmp(files_from, "-") == 0) {
1054                         filesfrom_fd = 0;
1055                         if (am_server)
1056                                 remote_filesfrom_file = "-";
1057                 }
1058                 else if ((colon = find_colon(files_from)) != 0) {
1059                         if (am_server) {
1060                                 usage(FERROR);
1061                                 exit_cleanup(RERR_SYNTAX);
1062                         }
1063                         remote_filesfrom_file = colon+1 + (colon[1] == ':');
1064                         if (strcmp(remote_filesfrom_file, "-") == 0) {
1065                                 snprintf(err_buf, sizeof err_buf,
1066                                         "Invalid --files-from remote filename\n");
1067                                 return 0;
1068                         }
1069                 } else {
1070                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1071                         if (filesfrom_fd < 0) {
1072                                 snprintf(err_buf, sizeof err_buf,
1073                                         "failed to open files-from file %s: %s\n",
1074                                         files_from, strerror(errno));
1075                                 return 0;
1076                         }
1077                 }
1078         }
1079
1080         return 1;
1081 }
1082
1083
1084 /**
1085  * Construct a filtered list of options to pass through from the
1086  * client to the server.
1087  *
1088  * This involves setting options that will tell the server how to
1089  * behave, and also filtering out options that are processed only
1090  * locally.
1091  **/
1092 void server_options(char **args,int *argc)
1093 {
1094         static char argstr[50+MAX_BASIS_DIRS*2];
1095         int ac = *argc;
1096         char *arg;
1097
1098         int i, x;
1099
1100         if (blocking_io == -1)
1101                 blocking_io = 0;
1102
1103         args[ac++] = "--server";
1104
1105         if (daemon_over_rsh) {
1106                 args[ac++] = "--daemon";
1107                 *argc = ac;
1108                 /* if we're passing --daemon, we're done */
1109                 return;
1110         }
1111
1112         if (!am_sender)
1113                 args[ac++] = "--sender";
1114
1115         x = 1;
1116         argstr[0] = '-';
1117         for (i = 0; i < verbose; i++)
1118                 argstr[x++] = 'v';
1119
1120         /* the -q option is intentionally left out */
1121         if (make_backups)
1122                 argstr[x++] = 'b';
1123         if (update_only)
1124                 argstr[x++] = 'u';
1125         if (dry_run)
1126                 argstr[x++] = 'n';
1127         if (preserve_links)
1128                 argstr[x++] = 'l';
1129         if (copy_links)
1130                 argstr[x++] = 'L';
1131         if (xfer_dirs > 1)
1132                 argstr[x++] = 'd';
1133         if (keep_dirlinks && am_sender)
1134                 argstr[x++] = 'K';
1135
1136         if (whole_file > 0)
1137                 argstr[x++] = 'W';
1138         /* We don't need to send --no-whole-file, because it's the
1139          * default for remote transfers, and in any case old versions
1140          * of rsync will not understand it. */
1141
1142         if (preserve_hard_links)
1143                 argstr[x++] = 'H';
1144         if (preserve_uid)
1145                 argstr[x++] = 'o';
1146         if (preserve_gid)
1147                 argstr[x++] = 'g';
1148         if (preserve_devices)
1149                 argstr[x++] = 'D';
1150         if (preserve_times)
1151                 argstr[x++] = 't';
1152         if (omit_dir_times && am_sender)
1153                 argstr[x++] = 'O';
1154         if (preserve_perms)
1155                 argstr[x++] = 'p';
1156         if (recurse < 0)
1157                 argstr[x++] = 'r';
1158         if (always_checksum)
1159                 argstr[x++] = 'c';
1160         if (cvs_exclude)
1161                 argstr[x++] = 'C';
1162         if (ignore_times)
1163                 argstr[x++] = 'I';
1164         if (relative_paths)
1165                 argstr[x++] = 'R';
1166         if (one_file_system)
1167                 argstr[x++] = 'x';
1168         if (sparse_files)
1169                 argstr[x++] = 'S';
1170         if (do_compression)
1171                 argstr[x++] = 'z';
1172
1173         /* This is a complete hack - blame Rusty.  FIXME!
1174          * This hack is only needed for older rsync versions that
1175          * don't understand the --list-only option. */
1176         if (list_only == 1 && recurse >= 0)
1177                 argstr[x++] = 'r';
1178
1179         argstr[x] = 0;
1180
1181         if (x != 1)
1182                 args[ac++] = argstr;
1183
1184         if (list_only > 1)
1185                 args[ac++] = "--list-only";
1186
1187         if (block_size) {
1188                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1189                         goto oom;
1190                 args[ac++] = arg;
1191         }
1192
1193         if (max_delete && am_sender) {
1194                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1195                         goto oom;
1196                 args[ac++] = arg;
1197         }
1198
1199         if (max_size && am_sender) {
1200                 args[ac++] = "--max-size";
1201                 args[ac++] = max_size_arg;
1202         }
1203
1204         if (io_timeout) {
1205                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1206                         goto oom;
1207                 args[ac++] = arg;
1208         }
1209
1210         if (bwlimit) {
1211                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1212                         goto oom;
1213                 args[ac++] = arg;
1214         }
1215
1216         if (backup_dir) {
1217                 args[ac++] = "--backup-dir";
1218                 args[ac++] = backup_dir;
1219         }
1220
1221         /* Only send --suffix if it specifies a non-default value. */
1222         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1223                 /* We use the following syntax to avoid weirdness with '~'. */
1224                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1225                         goto oom;
1226                 args[ac++] = arg;
1227         }
1228
1229         if (am_sender) {
1230                 if (delete_excluded)
1231                         args[ac++] = "--delete-excluded";
1232                 else if (delete_before == 1 || delete_after)
1233                         args[ac++] = "--delete";
1234                 if (delete_before > 1)
1235                         args[ac++] = "--delete-before";
1236                 if (delete_during)
1237                         args[ac++] = "--delete-during";
1238                 if (delete_after)
1239                         args[ac++] = "--delete-after";
1240                 if (force_delete)
1241                         args[ac++] = "--force";
1242         }
1243
1244         if (size_only)
1245                 args[ac++] = "--size-only";
1246
1247         if (modify_window_set) {
1248                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1249                         goto oom;
1250                 args[ac++] = arg;
1251         }
1252
1253         if (checksum_seed) {
1254                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1255                         goto oom;
1256                 args[ac++] = arg;
1257         }
1258
1259         if (partial_dir && am_sender) {
1260                 args[ac++] = "--partial-dir";
1261                 args[ac++] = partial_dir;
1262                 if (delay_updates)
1263                         args[ac++] = "--delay-updates";
1264         } else if (keep_partial)
1265                 args[ac++] = "--partial";
1266
1267         if (ignore_errors)
1268                 args[ac++] = "--ignore-errors";
1269
1270         if (copy_unsafe_links)
1271                 args[ac++] = "--copy-unsafe-links";
1272
1273         if (safe_symlinks)
1274                 args[ac++] = "--safe-links";
1275
1276         if (numeric_ids)
1277                 args[ac++] = "--numeric-ids";
1278
1279         if (only_existing && am_sender)
1280                 args[ac++] = "--existing";
1281
1282         if (opt_ignore_existing && am_sender)
1283                 args[ac++] = "--ignore-existing";
1284
1285         if (inplace)
1286                 args[ac++] = "--inplace";
1287
1288         if (tmpdir) {
1289                 args[ac++] = "--temp-dir";
1290                 args[ac++] = tmpdir;
1291         }
1292
1293         if (basis_dir[0] && am_sender) {
1294                 /* the server only needs this option if it is not the sender,
1295                  *   and it may be an older version that doesn't know this
1296                  *   option, so don't send it if client is the sender.
1297                  */
1298                 int i;
1299                 for (i = 0; i < basis_dir_cnt; i++) {
1300                         args[ac++] = dest_option;
1301                         args[ac++] = basis_dir[i];
1302                 }
1303         }
1304
1305         if (files_from && (!am_sender || remote_filesfrom_file)) {
1306                 if (remote_filesfrom_file) {
1307                         args[ac++] = "--files-from";
1308                         args[ac++] = remote_filesfrom_file;
1309                         if (eol_nulls)
1310                                 args[ac++] = "--from0";
1311                 } else {
1312                         args[ac++] = "--files-from=-";
1313                         args[ac++] = "--from0";
1314                 }
1315                 if (!relative_paths)
1316                         args[ac++] = "--no-relative";
1317         }
1318         if (!implied_dirs && !am_sender)
1319                 args[ac++] = "--no-implied-dirs";
1320
1321         *argc = ac;
1322         return;
1323
1324     oom:
1325         out_of_memory("server_options");
1326 }
1327
1328 /**
1329  * Return the position of a ':' IF it is not part of a filename (i.e. as
1330  * long as it doesn't occur after a slash.
1331  */
1332 char *find_colon(char *s)
1333 {
1334         char *p, *p2;
1335
1336         p = strchr(s,':');
1337         if (!p)
1338                 return NULL;
1339
1340         /* now check to see if there is a / in the string before the : - if there is then
1341            discard the colon on the assumption that the : is part of a filename */
1342         p2 = strchr(s,'/');
1343         if (p2 && p2 < p)
1344                 return NULL;
1345
1346         return p;
1347 }