- Fixed the --help and --version output to avoid using embedded
[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 #include "zlib/zlib.h"
24
25 extern int module_id;
26 extern int sanitize_paths;
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 append_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 do_xfers = 1;
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 remove_sent_files = 0;
64 int one_file_system = 0;
65 int protocol_version = PROTOCOL_VERSION;
66 int sparse_files = 0;
67 int do_compression = 0;
68 int def_compress_level = Z_DEFAULT_COMPRESSION;
69 int am_root = 0;
70 int am_server = 0;
71 int am_sender = 0;
72 int am_generator = 0;
73 int am_starting_up = 1;
74 int orig_umask = 0;
75 int relative_paths = -1;
76 int implied_dirs = 1;
77 int numeric_ids = 0;
78 int force_delete = 0;
79 int io_timeout = 0;
80 int allowed_lull = 0;
81 char *files_from = NULL;
82 int filesfrom_fd = -1;
83 char *filesfrom_host = NULL;
84 int eol_nulls = 0;
85 int human_readable = 0;
86 int recurse = 0;
87 int xfer_dirs = -1;
88 int am_daemon = 0;
89 int daemon_over_rsh = 0;
90 int do_stats = 0;
91 int do_progress = 0;
92 int keep_partial = 0;
93 int safe_symlinks = 0;
94 int copy_unsafe_links = 0;
95 int size_only = 0;
96 int daemon_bwlimit = 0;
97 int bwlimit = 0;
98 int fuzzy_basis = 0;
99 size_t bwlimit_writemax = 0;
100 int ignore_existing = 0;
101 int ignore_non_existing = 0;
102 int need_messages_from_generator = 0;
103 int max_delete = 0;
104 OFF_T max_size = 0;
105 OFF_T min_size = 0;
106 int ignore_errors = 0;
107 int modify_window = 0;
108 int blocking_io = -1;
109 int checksum_seed = 0;
110 int inplace = 0;
111 int delay_updates = 0;
112 long block_size = 0; /* "long" because popt can't set an int32. */
113
114
115 /** Network address family. **/
116 #ifdef INET6
117 int default_af_hint = 0;        /* Any protocol */
118 #else
119 int default_af_hint = AF_INET;  /* Must use IPv4 */
120 #endif
121
122 /** Do not go into the background when run as --daemon.  Good
123  * for debugging and required for running as a service on W32,
124  * or under Unix process-monitors. **/
125 int no_detach
126 #if defined _WIN32 || defined __WIN32__
127         = 1;
128 #else
129         = 0;
130 #endif
131
132 int write_batch = 0;
133 int read_batch = 0;
134 int backup_dir_len = 0;
135 int backup_suffix_len;
136 unsigned int backup_dir_remainder;
137
138 char *backup_suffix = NULL;
139 char *tmpdir = NULL;
140 char *partial_dir = NULL;
141 char *basis_dir[MAX_BASIS_DIRS+1];
142 char *config_file = NULL;
143 char *shell_cmd = NULL;
144 char *log_format = NULL;
145 char *password_file = NULL;
146 char *rsync_path = RSYNC_PATH;
147 char *backup_dir = NULL;
148 char *chmod_mode = NULL;
149 char backup_dir_buf[MAXPATHLEN];
150 int rsync_port = 0;
151 int compare_dest = 0;
152 int copy_dest = 0;
153 int link_dest = 0;
154 int basis_dir_cnt = 0;
155 char *dest_option = NULL;
156
157 int verbose = 0;
158 int quiet = 0;
159 int log_before_transfer = 0;
160 int log_format_has_i = 0;
161 int log_format_has_o_or_i = 0;
162 int always_checksum = 0;
163 int list_only = 0;
164
165 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
166 char *batch_name = NULL;
167
168 struct chmod_mode_struct *chmod_modes = NULL;
169
170 static int daemon_opt;   /* sets am_daemon after option error-reporting */
171 static int F_option_cnt = 0;
172 static int modify_window_set;
173 static int itemize_changes = 0;
174 static int refused_delete, refused_archive_part, refused_compress;
175 static int refused_partial, refused_progress, refused_delete_before;
176 static int refused_inplace;
177 static char *max_size_arg, *min_size_arg;
178 static char partialdir_for_delayupdate[] = ".~tmp~";
179
180 /** Local address to bind.  As a character string because it's
181  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
182  * address, or a hostname. **/
183 char *bind_address;
184
185
186 static void print_rsync_version(enum logcode f)
187 {
188         char const *got_socketpair = "no ";
189         char const *have_inplace = "no ";
190         char const *hardlinks = "no ";
191         char const *links = "no ";
192         char const *ipv6 = "no ";
193         STRUCT_STAT *dumstat;
194
195 #ifdef HAVE_SOCKETPAIR
196         got_socketpair = "";
197 #endif
198
199 #ifdef HAVE_FTRUNCATE
200         have_inplace = "";
201 #endif
202
203 #ifdef SUPPORT_HARD_LINKS
204         hardlinks = "";
205 #endif
206
207 #ifdef SUPPORT_LINKS
208         links = "";
209 #endif
210
211 #ifdef INET6
212         ipv6 = "";
213 #endif
214
215         rprintf(f, "%s  version %s  protocol version %d\n",
216                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
217         rprintf(f, "Copyright (C) 1996-2006 by Wayne Davison, Andrew Tridgell, and others\n");
218         rprintf(f, "<http://rsync.samba.org/>\n");
219         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
220                 "%shard links, %ssymlinks, batchfiles, \n",
221                 (int) (sizeof (OFF_T) * 8),
222                 got_socketpair, hardlinks, links);
223
224         /* Note that this field may not have type ino_t.  It depends
225          * on the complicated interaction between largefile feature
226          * macros. */
227         rprintf(f, "              %sinplace, %sIPv6, %d-bit system inums, %d-bit internal inums\n",
228                 have_inplace, ipv6,
229                 (int) (sizeof dumstat->st_ino * 8),
230                 (int) (sizeof (int64) * 8));
231 #ifdef MAINTAINER_MODE
232         rprintf(f, "              panic action: \"%s\"\n",
233                 get_panic_action());
234 #endif
235
236 #if SIZEOF_INT64 < 8
237         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
238 #endif
239         if (sizeof (int64) != SIZEOF_INT64) {
240                 rprintf(f,
241                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
242                         (int) SIZEOF_INT64, (int) sizeof (int64));
243         }
244
245         rprintf(f,"\nrsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
246         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
247         rprintf(f,"General Public Licence for details.\n");
248 }
249
250
251 void usage(enum logcode F)
252 {
253   print_rsync_version(F);
254
255   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\n");
256   rprintf(F,"via a fast differencing algorithm.\n");
257
258   rprintf(F,"\nUsage: rsync [OPTION]... SRC [SRC]... DEST\n");
259   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
260   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
261   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
262   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
263   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
264   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
265   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
266   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
267   rprintf(F,"\nOptions\n");
268   rprintf(F," -v, --verbose               increase verbosity\n");
269   rprintf(F," -q, --quiet                 suppress non-error messages\n");
270   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
271   rprintf(F," -a, --archive               archive mode; same as -rlptgoD (no -H)\n");
272   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
273   rprintf(F," -r, --recursive             recurse into directories\n");
274   rprintf(F," -R, --relative              use relative path names\n");
275   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
276   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
277   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
278   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
279   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
280   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
281   rprintf(F,"     --append                append data onto shorter files\n");
282   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
283   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
284   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
285   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
286   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
287   rprintf(F," -H, --hard-links            preserve hard links\n");
288   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
289   rprintf(F," -p, --perms                 preserve permissions\n");
290   rprintf(F," -o, --owner                 preserve owner (root only)\n");
291   rprintf(F," -g, --group                 preserve group\n");
292   rprintf(F," -D, --devices               preserve devices (root only)\n");
293   rprintf(F," -t, --times                 preserve times\n");
294   rprintf(F," -O, --omit-dir-times        omit directories when preserving times\n");
295   rprintf(F,"     --chmod=CHMOD           change destination permissions\n");
296   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
297   rprintf(F," -n, --dry-run               show what would have been transferred\n");
298   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
299   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
300   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
301   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
302   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
303   rprintf(F,"     --existing              ignore non-existing files on receiving side\n");
304   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
305   rprintf(F,"     --remove-sent-files     sent files/symlinks are removed from sending side\n");
306   rprintf(F,"     --del                   an alias for --delete-during\n");
307   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
308   rprintf(F,"     --delete-before         receiver deletes before transfer (default)\n");
309   rprintf(F,"     --delete-during         receiver deletes during transfer, not before\n");
310   rprintf(F,"     --delete-after          receiver deletes after transfer, not before\n");
311   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
312   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
313   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
314   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
315   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
316   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
317   rprintf(F,"     --partial               keep partially transferred files\n");
318   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
319   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
320   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
321   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
322   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
323   rprintf(F,"     --size-only             skip files that match in size\n");
324   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
325   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
326   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
327   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
328   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
329   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
330   rprintf(F," -z, --compress              compress file data during the transfer\n");
331   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
332   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
333   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
334   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
335   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
336   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
337   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
338   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
339   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
340   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
341   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
342   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
343   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
344   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
345   rprintf(F,"     --stats                 give some file-transfer stats\n");
346   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
347   rprintf(F,"     --si                    like human-readable, but use powers of 1000\n");
348   rprintf(F,"     --progress              show progress during transfer\n");
349   rprintf(F," -P                          same as --partial --progress\n");
350   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
351   rprintf(F,"     --log-format=FORMAT     output filenames using the specified format\n");
352   rprintf(F,"     --password-file=FILE    read password from FILE\n");
353   rprintf(F,"     --list-only             list the files instead of copying them\n");
354   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
355   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
356   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
357   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
358   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
359 #ifdef INET6
360   rprintf(F," -4, --ipv4                  prefer IPv4\n");
361   rprintf(F," -6, --ipv6                  prefer IPv6\n");
362 #endif
363   rprintf(F,"     --version               print version number\n");
364   rprintf(F,"     --help                  show this help screen\n");
365
366   rprintf(F,"\nUse \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
367   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
368   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
369 }
370
371 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
372       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
373       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE,
374       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
375       OPT_REFUSED_BASE = 9000};
376
377 static struct poptOption long_options[] = {
378   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
379   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
380   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
381   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
382   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
383   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
384   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
385   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
386   {"human-readable",  'h', POPT_ARG_VAL,    &human_readable, 1, 0, 0},
387   {"si",               0,  POPT_ARG_VAL,    &human_readable, 2, 0, 0},
388   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
389   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
390   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
391   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
392   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
393   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
394   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
395   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
396   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
397   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
398   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
399   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
400   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
401   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
402   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 2, 0, 0 },
403   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
404   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
405   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
406   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
407   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
408   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
409   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
410   {"devices",         'D', POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
411   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
412   {"no-D",             0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
413   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
414   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
415   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
416   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
417   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
418   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
419   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
420   {"hard-links",      'H', POPT_ARG_NONE,   &preserve_hard_links, 0, 0, 0 },
421   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
422   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
423   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
424   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
425   {"chmod",            0,  POPT_ARG_STRING, &chmod_mode, 0, 0, 0 },
426   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
427   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
428   {"one-file-system", 'x', POPT_ARG_NONE,   &one_file_system, 0, 0, 0 },
429   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
430   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
431   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
432   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
433   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
434   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
435   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
436   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
437   {"append",           0,  POPT_ARG_VAL,    &append_mode, 1, 0, 0 },
438   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
439   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
440   {"delete-before",    0,  POPT_ARG_VAL,    &delete_before, 2, 0, 0 },
441   {"delete-during",    0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
442   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
443   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
444   {"remove-sent-files",0,  POPT_ARG_NONE,   &remove_sent_files, 0, 0, 0 },
445   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
446   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
447   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
448   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
449   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
450   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
451   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
452   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
453   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
454   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
455   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
456   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
457   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
458   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
459   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
460   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
461   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
462   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
463   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
464   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
465   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
466   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
467   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
468   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
469   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
470   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
471   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
472   {"delay-updates",    0,  POPT_ARG_NONE,   &delay_updates, 0, 0, 0 },
473   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
474   {"itemize-changes", 'i', POPT_ARG_NONE,   &itemize_changes, 0, 0, 0 },
475   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
476   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
477   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
478   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
479   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
480   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
481   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
482   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
483   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
484   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
485   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
486   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
487   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
488   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
489   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
490 #ifdef INET6
491   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
492   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
493 #endif
494   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
495   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
496   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
497   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
498   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
499   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
500   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
501   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
502   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
503   /* All the following options switch us into daemon-mode option-parsing. */
504   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
505   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
506   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
507   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
508   {0,0,0,0, 0, 0, 0}
509 };
510
511 static void daemon_usage(enum logcode F)
512 {
513   print_rsync_version(F);
514
515   rprintf(F,"\nUsage: rsync --daemon [OPTION]...\n");
516   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
517   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
518   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
519   rprintf(F,"     --no-detach             do not detach from the parent\n");
520   rprintf(F,"     --port=PORT             listen on alternate port number\n");
521   rprintf(F," -v, --verbose               increase verbosity\n");
522 #ifdef INET6
523   rprintf(F," -4, --ipv4                  prefer IPv4\n");
524   rprintf(F," -6, --ipv6                  prefer IPv6\n");
525 #endif
526   rprintf(F,"     --help                  show this help screen\n");
527
528   rprintf(F,"\nIf you were not trying to invoke rsync as a daemon, avoid using any of the\n");
529   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
530 }
531
532 static struct poptOption long_daemon_options[] = {
533   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
534   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
535   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
536   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
537   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
538 #ifdef INET6
539   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
540   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
541 #endif
542   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
543   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
544   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
545   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
546   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
547   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
548   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
549   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
550   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
551   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
552   {0,0,0,0, 0, 0, 0}
553 };
554
555
556 static char err_buf[200];
557
558
559 /**
560  * Store the option error message, if any, so that we can log the
561  * connection attempt (which requires parsing the options), and then
562  * show the error later on.
563  **/
564 void option_error(void)
565 {
566         if (!err_buf[0]) {
567                 strcpy(err_buf, "Error parsing options: "
568                     "option may be supported on client but not on server?\n");
569         }
570
571         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
572 }
573
574
575 /**
576  * Tweak the option table to disable all options that the rsyncd.conf
577  * file has told us to refuse.
578  **/
579 static void set_refuse_options(char *bp)
580 {
581         struct poptOption *op;
582         char *cp, shortname[2];
583         int is_wild, found_match;
584
585         shortname[1] = '\0';
586
587         while (1) {
588                 while (*bp == ' ') bp++;
589                 if (!*bp)
590                         break;
591                 if ((cp = strchr(bp, ' ')) != NULL)
592                         *cp= '\0';
593                 is_wild = strpbrk(bp, "*?[") != NULL;
594                 found_match = 0;
595                 for (op = long_options; ; op++) {
596                         *shortname = op->shortName;
597                         if (!op->longName && !*shortname)
598                                 break;
599                         if ((op->longName && wildmatch(bp, op->longName))
600                             || (*shortname && wildmatch(bp, shortname))) {
601                                 if (op->argInfo == POPT_ARG_VAL)
602                                         op->argInfo = POPT_ARG_NONE;
603                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
604                                 found_match = 1;
605                                 /* These flags are set to let us easily check
606                                  * an implied option later in the code. */
607                                 switch (*shortname) {
608                                 case 'r': case 'd': case 'l': case 'p':
609                                 case 't': case 'g': case 'o': case 'D':
610                                         refused_archive_part = op->val;
611                                         break;
612                                 case 'z':
613                                         refused_compress = op->val;
614                                         break;
615                                 case '\0':
616                                         if (wildmatch("delete", op->longName))
617                                                 refused_delete = op->val;
618                                         else if (wildmatch("delete-before", op->longName))
619                                                 refused_delete_before = op->val;
620                                         else if (wildmatch("partial", op->longName))
621                                                 refused_partial = op->val;
622                                         else if (wildmatch("progress", op->longName))
623                                                 refused_progress = op->val;
624                                         else if (wildmatch("inplace", op->longName))
625                                                 refused_inplace = op->val;
626                                         break;
627                                 }
628                                 if (!is_wild)
629                                         break;
630                         }
631                 }
632                 if (!found_match) {
633                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
634                                 bp);
635                 }
636                 if (!cp)
637                         break;
638                 *cp = ' ';
639                 bp = cp + 1;
640         }
641
642         for (op = long_options; ; op++) {
643                 *shortname = op->shortName;
644                 if (!op->longName && !*shortname)
645                         break;
646                 if (op->val == OPT_DAEMON) {
647                         if (op->argInfo == POPT_ARG_VAL)
648                                 op->argInfo = POPT_ARG_NONE;
649                         op->val = (op - long_options) + OPT_REFUSED_BASE;
650                 }
651         }
652 }
653
654
655 static int count_args(const char **argv)
656 {
657         int i = 0;
658
659         if (argv) {
660                 while (argv[i] != NULL)
661                         i++;
662         }
663
664         return i;
665 }
666
667
668 static OFF_T parse_size_arg(char **size_arg, char def_suf)
669 {
670         int reps, mult, make_compatible = 0;
671         const char *arg;
672         OFF_T size = 1;
673
674         for (arg = *size_arg; isdigit(*(uchar*)arg); arg++) {}
675         if (*arg == '.')
676                 for (arg++; isdigit(*(uchar*)arg); arg++) {}
677         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
678         case 'b': case 'B':
679                 reps = 0;
680                 break;
681         case 'k': case 'K':
682                 reps = 1;
683                 break;
684         case 'm': case 'M':
685                 reps = 2;
686                 break;
687         case 'g': case 'G':
688                 reps = 3;
689                 break;
690         default:
691                 return -1;
692         }
693         if (*arg == 'b' || *arg == 'B')
694                 mult = 1000, make_compatible = 1, arg++;
695         else if (!*arg || *arg == '+' || *arg == '-')
696                 mult = 1024;
697         else if (strncasecmp(arg, "ib", 2) == 0)
698                 mult = 1024, arg += 2;
699         else
700                 return -1;
701         while (reps--)
702                 size *= mult;
703         size *= atof(*size_arg);
704         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
705                 size += atoi(arg), make_compatible = 1, arg += 2;
706         if (*arg)
707                 return -1;
708         if (size > 0 && make_compatible) {
709                 /* We convert this manually because we may need %lld precision,
710                  * and that's not a portable sprintf() escape. */
711                 char buf[128], *s = buf + sizeof buf - 1;
712                 OFF_T num = size;
713                 *s = '\0';
714                 while (num) {
715                         *--s = (num % 10) + '0';
716                         num /= 10;
717                 }
718                 if (!(*size_arg = strdup(s)))
719                         out_of_memory("parse_size_arg");
720         }
721         return size;
722 }
723
724
725 static void create_refuse_error(int which)
726 {
727         /* The "which" value is the index + OPT_REFUSED_BASE. */
728         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
729         int n = snprintf(err_buf, sizeof err_buf,
730                          "The server is configured to refuse --%s\n",
731                          op->longName) - 1;
732         if (op->shortName) {
733                 snprintf(err_buf + n, sizeof err_buf - n,
734                          " (-%c)\n", op->shortName);
735         }
736 }
737
738
739 /**
740  * Process command line arguments.  Called on both local and remote.
741  *
742  * @retval 1 if all options are OK; with globals set to appropriate
743  * values
744  *
745  * @retval 0 on error, with err_buf containing an explanation
746  **/
747 int parse_arguments(int *argc, const char ***argv, int frommain)
748 {
749         int opt;
750         char *ref = lp_refuse_options(module_id);
751         const char *arg;
752         poptContext pc;
753
754         if (ref && *ref)
755                 set_refuse_options(ref);
756
757         /* TODO: Call poptReadDefaultConfig; handle errors. */
758
759         /* The context leaks in case of an error, but if there's a
760          * problem we always exit anyhow. */
761         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
762         poptReadDefaultConfig(pc, 0);
763
764         while ((opt = poptGetNextOpt(pc)) != -1) {
765                 /* most options are handled automatically by popt;
766                  * only special cases are returned and listed here. */
767
768                 switch (opt) {
769                 case OPT_VERSION:
770                         print_rsync_version(FINFO);
771                         exit_cleanup(0);
772
773                 case OPT_DAEMON:
774                         if (am_daemon) {
775                                 strcpy(err_buf, "Attempt to hack rsync thwarted!\n");
776                                 return 0;
777                         }
778                         poptFreeContext(pc);
779                         pc = poptGetContext(RSYNC_NAME, *argc, *argv,
780                                             long_daemon_options, 0);
781                         while ((opt = poptGetNextOpt(pc)) != -1) {
782                                 switch (opt) {
783                                 case 'h':
784                                         daemon_usage(FINFO);
785                                         exit_cleanup(0);
786
787                                 case 'v':
788                                         verbose++;
789                                         break;
790
791                                 default:
792                                         rprintf(FERROR,
793                                             "rsync: %s: %s (in daemon mode)\n",
794                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
795                                             poptStrerror(opt));
796                                         goto daemon_error;
797                                 }
798                         }
799
800                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
801                                 snprintf(err_buf, sizeof err_buf,
802                                          "the --temp-dir path is WAY too long.\n");
803                                 return 0;
804                         }
805
806                         if (!daemon_opt) {
807                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
808                             daemon_error:
809                                 rprintf(FERROR,
810                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
811                                 exit_cleanup(RERR_SYNTAX);
812                         }
813
814                         *argv = poptGetArgs(pc);
815                         *argc = count_args(*argv);
816                         am_starting_up = 0;
817                         daemon_opt = 0;
818                         am_daemon = 1;
819                         return 1;
820
821                 case OPT_MODIFY_WINDOW:
822                         /* The value has already been set by popt, but
823                          * we need to remember that we're using a
824                          * non-default setting. */
825                         modify_window_set = 1;
826                         break;
827
828                 case OPT_FILTER:
829                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
830                         break;
831
832                 case OPT_EXCLUDE:
833                         parse_rule(&filter_list, poptGetOptArg(pc),
834                                    0, XFLG_OLD_PREFIXES);
835                         break;
836
837                 case OPT_INCLUDE:
838                         parse_rule(&filter_list, poptGetOptArg(pc),
839                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
840                         break;
841
842                 case OPT_EXCLUDE_FROM:
843                 case OPT_INCLUDE_FROM:
844                         arg = poptGetOptArg(pc);
845                         if (sanitize_paths)
846                                 arg = sanitize_path(NULL, arg, NULL, 0);
847                         if (server_filter_list.head) {
848                                 char *cp = (char *)arg;
849                                 if (!*cp)
850                                         goto options_rejected;
851                                 clean_fname(cp, 1);
852                                 if (check_filter(&server_filter_list, cp, 0) < 0)
853                                         goto options_rejected;
854                         }
855                         parse_filter_file(&filter_list, arg,
856                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
857                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
858                         break;
859
860                 case 'a':
861                         if (refused_archive_part) {
862                                 create_refuse_error(refused_archive_part);
863                                 return 0;
864                         }
865                         if (!recurse) /* preserve recurse == 2 */
866                                 recurse = 1;
867 #ifdef SUPPORT_LINKS
868                         preserve_links = 1;
869 #endif
870                         preserve_perms = 1;
871                         preserve_times = 1;
872                         preserve_gid = 1;
873                         preserve_uid = 1;
874                         preserve_devices = 1;
875                         break;
876
877                 case OPT_HELP:
878                         usage(FINFO);
879                         exit_cleanup(0);
880
881                 case 'v':
882                         verbose++;
883                         break;
884
885                 case 'q':
886                         if (frommain)
887                                 quiet++;
888                         break;
889
890                 case OPT_SENDER:
891                         if (!am_server) {
892                                 usage(FERROR);
893                                 exit_cleanup(RERR_SYNTAX);
894                         }
895                         am_sender = 1;
896                         break;
897
898                 case 'F':
899                         switch (++F_option_cnt) {
900                         case 1:
901                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
902                                 break;
903                         case 2:
904                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
905                                 break;
906                         }
907                         break;
908
909                 case 'P':
910                         if (refused_partial || refused_progress) {
911                                 create_refuse_error(refused_partial
912                                     ? refused_partial : refused_progress);
913                                 return 0;
914                         }
915                         do_progress = 1;
916                         keep_partial = 1;
917                         break;
918
919                 case 'z':
920                         if (def_compress_level < Z_DEFAULT_COMPRESSION
921                          || def_compress_level > Z_BEST_COMPRESSION) {
922                                 snprintf(err_buf, sizeof err_buf,
923                                         "--compress-level value is invalid: %d\n",
924                                         def_compress_level);
925                                 return 0;
926                         }
927                         do_compression = def_compress_level != Z_NO_COMPRESSION;
928                         if (do_compression && refused_compress) {
929                                 create_refuse_error(refused_compress);
930                                 return 0;
931                         }
932                         break;
933
934                 case OPT_WRITE_BATCH:
935                         /* batch_name is already set */
936                         write_batch = 1;
937                         break;
938
939                 case OPT_ONLY_WRITE_BATCH:
940                         /* batch_name is already set */
941                         write_batch = -1;
942                         break;
943
944                 case OPT_READ_BATCH:
945                         /* batch_name is already set */
946                         read_batch = 1;
947                         break;
948
949                 case OPT_MAX_SIZE:
950                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
951                                 snprintf(err_buf, sizeof err_buf,
952                                         "--max-size value is invalid: %s\n",
953                                         max_size_arg);
954                                 return 0;
955                         }
956                         break;
957
958                 case OPT_MIN_SIZE:
959                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
960                                 snprintf(err_buf, sizeof err_buf,
961                                         "--min-size value is invalid: %s\n",
962                                         min_size_arg);
963                                 return 0;
964                         }
965                         break;
966
967                 case OPT_LINK_DEST:
968 #ifdef HAVE_LINK
969                         link_dest = 1;
970                         dest_option = "--link-dest";
971                         goto set_dest_dir;
972 #else
973                         snprintf(err_buf, sizeof err_buf,
974                                  "hard links are not supported on this %s\n",
975                                  am_server ? "server" : "client");
976                         return 0;
977 #endif
978
979                 case OPT_COPY_DEST:
980                         copy_dest = 1;
981                         dest_option = "--copy-dest";
982                         goto set_dest_dir;
983
984                 case OPT_COMPARE_DEST:
985                         compare_dest = 1;
986                         dest_option = "--compare-dest";
987                 set_dest_dir:
988                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
989                                 snprintf(err_buf, sizeof err_buf,
990                                         "ERROR: at most %d %s args may be specified\n",
991                                         MAX_BASIS_DIRS, dest_option);
992                                 return 0;
993                         }
994                         arg = poptGetOptArg(pc);
995                         if (sanitize_paths)
996                                 arg = sanitize_path(NULL, arg, NULL, 0);
997                         basis_dir[basis_dir_cnt++] = (char *)arg;
998                         break;
999
1000                 default:
1001                         /* A large opt value means that set_refuse_options()
1002                          * turned this option off. */
1003                         if (opt >= OPT_REFUSED_BASE) {
1004                                 create_refuse_error(opt);
1005                                 return 0;
1006                         }
1007                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1008                                  am_server ? "on remote machine: " : "",
1009                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1010                                  poptStrerror(opt));
1011                         return 0;
1012                 }
1013         }
1014
1015         if (human_readable && *argc == 2) {
1016                 usage(FINFO);
1017                 exit_cleanup(0);
1018         }
1019
1020 #ifndef SUPPORT_LINKS
1021         if (preserve_links && !am_sender) {
1022                 snprintf(err_buf, sizeof err_buf,
1023                          "symlinks are not supported on this %s\n",
1024                          am_server ? "server" : "client");
1025                 return 0;
1026         }
1027 #endif
1028
1029 #ifndef SUPPORT_HARD_LINKS
1030         if (preserve_hard_links) {
1031                 snprintf(err_buf, sizeof err_buf,
1032                          "hard links are not supported on this %s\n",
1033                          am_server ? "server" : "client");
1034                 return 0;
1035         }
1036 #endif
1037
1038         if (write_batch && read_batch) {
1039                 snprintf(err_buf, sizeof err_buf,
1040                         "--write-batch and --read-batch can not be used together\n");
1041                 return 0;
1042         }
1043         if (write_batch > 0 || read_batch) {
1044                 if (am_server) {
1045                         rprintf(FINFO,
1046                                 "ignoring --%s-batch option sent to server\n",
1047                                 write_batch ? "write" : "read");
1048                         /* We don't actually exit_cleanup(), so that we can
1049                          * still service older version clients that still send
1050                          * batch args to server. */
1051                         read_batch = write_batch = 0;
1052                         batch_name = NULL;
1053                 } else if (dry_run)
1054                         write_batch = 0;
1055         }
1056         if (read_batch && files_from) {
1057                 snprintf(err_buf, sizeof err_buf,
1058                         "--read-batch cannot be used with --files-from\n");
1059                 return 0;
1060         }
1061         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1062                 snprintf(err_buf, sizeof err_buf,
1063                         "the batch-file name must be %d characters or less.\n",
1064                         MAX_BATCH_NAME_LEN);
1065                 return 0;
1066         }
1067
1068         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1069                 snprintf(err_buf, sizeof err_buf,
1070                          "the --temp-dir path is WAY too long.\n");
1071                 return 0;
1072         }
1073
1074         if (compare_dest + copy_dest + link_dest > 1) {
1075                 snprintf(err_buf, sizeof err_buf,
1076                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1077                 return 0;
1078         }
1079
1080         if (files_from) {
1081                 if (recurse == 1) /* preserve recurse == 2 */
1082                         recurse = 0;
1083                 if (xfer_dirs < 0)
1084                         xfer_dirs = 1;
1085         }
1086
1087         if (xfer_dirs < 1)
1088                 xfer_dirs = recurse || list_only;
1089
1090         if (relative_paths < 0)
1091                 relative_paths = files_from? 1 : 0;
1092         if (!relative_paths)
1093                 implied_dirs = 0;
1094
1095         if (!!delete_before + delete_during + delete_after > 1) {
1096                 snprintf(err_buf, sizeof err_buf,
1097                         "You may not combine multiple --delete-WHEN options.\n");
1098                 return 0;
1099         }
1100         if (!xfer_dirs) {
1101                 delete_before = delete_during = delete_after = 0;
1102                 delete_mode = delete_excluded = 0;
1103         } else if (delete_before || delete_during || delete_after)
1104                 delete_mode = 1;
1105         else if (delete_mode || delete_excluded) {
1106                 if (refused_delete_before) {
1107                         create_refuse_error(refused_delete_before);
1108                         return 0;
1109                 }
1110                 delete_mode = delete_before = 1;
1111         }
1112
1113         if (delete_mode && refused_delete) {
1114                 create_refuse_error(refused_delete);
1115                 return 0;
1116         }
1117
1118         if (remove_sent_files) {
1119                 /* We only want to infer this refusal of --remove-sent-files
1120                  * via the refusal of "delete", not any of the "delete-FOO"
1121                  * options. */
1122                 if (refused_delete && am_sender) {
1123                         create_refuse_error(refused_delete);
1124                         return 0;
1125                 }
1126                 need_messages_from_generator = 1;
1127         }
1128
1129         *argv = poptGetArgs(pc);
1130         *argc = count_args(*argv);
1131
1132         if (sanitize_paths) {
1133                 int i;
1134                 for (i = *argc; i-- > 0; )
1135                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
1136                 if (tmpdir)
1137                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
1138                 if (partial_dir)
1139                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
1140                 if (backup_dir)
1141                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
1142         }
1143         if (server_filter_list.head && !am_sender) {
1144                 struct filter_list_struct *elp = &server_filter_list;
1145                 int i;
1146                 if (tmpdir) {
1147                         if (!*tmpdir)
1148                                 goto options_rejected;
1149                         clean_fname(tmpdir, 1);
1150                         if (check_filter(elp, tmpdir, 1) < 0)
1151                                 goto options_rejected;
1152                 }
1153                 if (partial_dir && *partial_dir) {
1154                         clean_fname(partial_dir, 1);
1155                         if (check_filter(elp, partial_dir, 1) < 0)
1156                                 goto options_rejected;
1157                 }
1158                 for (i = 0; i < basis_dir_cnt; i++) {
1159                         if (!*basis_dir[i])
1160                                 goto options_rejected;
1161                         clean_fname(basis_dir[i], 1);
1162                         if (check_filter(elp, basis_dir[i], 1) < 0)
1163                                 goto options_rejected;
1164                 }
1165                 if (backup_dir) {
1166                         if (!*backup_dir)
1167                                 goto options_rejected;
1168                         clean_fname(backup_dir, 1);
1169                         if (check_filter(elp, backup_dir, 1) < 0) {
1170                             options_rejected:
1171                                 snprintf(err_buf, sizeof err_buf,
1172                                     "Your options have been rejected by the server.\n");
1173                                 return 0;
1174                         }
1175                 }
1176         }
1177
1178         if (!backup_suffix)
1179                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1180         backup_suffix_len = strlen(backup_suffix);
1181         if (strchr(backup_suffix, '/') != NULL) {
1182                 snprintf(err_buf, sizeof err_buf,
1183                         "--suffix cannot contain slashes: %s\n",
1184                         backup_suffix);
1185                 return 0;
1186         }
1187         if (backup_dir) {
1188                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1189                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1190                 if (backup_dir_remainder < 32) {
1191                         snprintf(err_buf, sizeof err_buf,
1192                                 "the --backup-dir path is WAY too long.\n");
1193                         return 0;
1194                 }
1195                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1196                         backup_dir_buf[backup_dir_len++] = '/';
1197                         backup_dir_buf[backup_dir_len] = '\0';
1198                 }
1199                 if (verbose > 1 && !am_sender)
1200                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1201         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1202                 snprintf(err_buf, sizeof err_buf,
1203                         "--suffix cannot be a null string without --backup-dir\n");
1204                 return 0;
1205         } else if (delete_mode && !delete_excluded) {
1206                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1207                         "P *%s", backup_suffix);
1208                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1209         }
1210         if (make_backups && !backup_dir)
1211                 omit_dir_times = 1;
1212
1213         if (chmod_mode && !(chmod_modes = parse_chmod(chmod_mode))) {
1214                 snprintf(err_buf, sizeof err_buf,
1215                     "Invalid argument passed to --chmod\n");
1216                 return 0;
1217         }
1218
1219         if (log_format) {
1220                 if (log_format_has(log_format, 'i'))
1221                         log_format_has_i = 1;
1222                 if (!log_format_has(log_format, 'b')
1223                  && !log_format_has(log_format, 'c'))
1224                         log_before_transfer = !am_server;
1225         } else if (itemize_changes) {
1226                 log_format = "%i %n%L";
1227                 log_format_has_i = 1;
1228                 log_before_transfer = !am_server;
1229         }
1230
1231         if ((do_progress || dry_run) && !verbose && !log_before_transfer
1232             && !am_server)
1233                 verbose = 1;
1234
1235         if (dry_run)
1236                 do_xfers = 0;
1237
1238         set_io_timeout(io_timeout);
1239
1240         if (verbose && !log_format) {
1241                 log_format = "%n%L";
1242                 log_before_transfer = !am_server;
1243         }
1244         if (log_format_has_i || log_format_has(log_format, 'o'))
1245                 log_format_has_o_or_i = 1;
1246
1247         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1248                 bwlimit = daemon_bwlimit;
1249         if (bwlimit) {
1250                 bwlimit_writemax = (size_t)bwlimit * 128;
1251                 if (bwlimit_writemax < 512)
1252                         bwlimit_writemax = 512;
1253         }
1254
1255         if (sparse_files && inplace) {
1256                 /* Note: we don't check for this below, because --append is
1257                  * OK with --sparse (as long as redos are handled right). */
1258                 snprintf(err_buf, sizeof err_buf,
1259                          "--sparse cannot be used with --inplace\n");
1260                 return 0;
1261         }
1262
1263         if (append_mode) {
1264                 if (whole_file > 0) {
1265                         snprintf(err_buf, sizeof err_buf,
1266                                  "--append cannot be used with --whole-file\n");
1267                         return 0;
1268                 }
1269                 if (refused_inplace) {
1270                         create_refuse_error(refused_inplace);
1271                         return 0;
1272                 }
1273                 inplace = 1;
1274         }
1275
1276         if (delay_updates && !partial_dir)
1277                 partial_dir = partialdir_for_delayupdate;
1278
1279         if (inplace) {
1280 #ifdef HAVE_FTRUNCATE
1281                 if (partial_dir) {
1282                         snprintf(err_buf, sizeof err_buf,
1283                                  "--%s cannot be used with --%s\n",
1284                                  append_mode ? "append" : "inplace",
1285                                  delay_updates ? "delay-updates" : "partial-dir");
1286                         return 0;
1287                 }
1288                 /* --inplace implies --partial for refusal purposes, but we
1289                  * clear the keep_partial flag for internal logic purposes. */
1290                 if (refused_partial) {
1291                         create_refuse_error(refused_partial);
1292                         return 0;
1293                 }
1294                 keep_partial = 0;
1295 #else
1296                 snprintf(err_buf, sizeof err_buf,
1297                          "--%s is not supported on this %s\n",
1298                          append_mode ? "append" : "inplace",
1299                          am_server ? "server" : "client");
1300                 return 0;
1301 #endif
1302         } else {
1303                 if (keep_partial && !partial_dir) {
1304                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1305                                 partial_dir = strdup(arg);
1306                 }
1307                 if (partial_dir) {
1308                         if (*partial_dir)
1309                                 clean_fname(partial_dir, 1);
1310                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1311                                 partial_dir = NULL;
1312                         else if (*partial_dir != '/') {
1313                                 parse_rule(&filter_list, partial_dir,
1314                                     MATCHFLG_NO_PREFIXES|MATCHFLG_DIRECTORY, 0);
1315                         }
1316                         if (!partial_dir && refused_partial) {
1317                                 create_refuse_error(refused_partial);
1318                                 return 0;
1319                         }
1320                         keep_partial = 1;
1321                 }
1322         }
1323
1324         if (files_from) {
1325                 char *h, *p;
1326                 int q;
1327                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
1328                         usage(FERROR);
1329                         exit_cleanup(RERR_SYNTAX);
1330                 }
1331                 if (strcmp(files_from, "-") == 0) {
1332                         filesfrom_fd = 0;
1333                         if (am_server)
1334                                 filesfrom_host = ""; /* reading from socket */
1335                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1336                         if (am_server) {
1337                                 snprintf(err_buf, sizeof err_buf,
1338                                         "The --files-from sent to the server cannot specify a host.\n");
1339                                 return 0;
1340                         }
1341                         files_from = p;
1342                         filesfrom_host = h;
1343                         if (strcmp(files_from, "-") == 0) {
1344                                 snprintf(err_buf, sizeof err_buf,
1345                                         "Invalid --files-from remote filename\n");
1346                                 return 0;
1347                         }
1348                 } else {
1349                         if (sanitize_paths)
1350                                 files_from = sanitize_path(NULL, files_from, NULL, 0);
1351                         if (server_filter_list.head) {
1352                                 if (!*files_from)
1353                                         goto options_rejected;
1354                                 clean_fname(files_from, 1);
1355                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1356                                         goto options_rejected;
1357                         }
1358                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1359                         if (filesfrom_fd < 0) {
1360                                 snprintf(err_buf, sizeof err_buf,
1361                                         "failed to open files-from file %s: %s\n",
1362                                         files_from, strerror(errno));
1363                                 return 0;
1364                         }
1365                 }
1366         }
1367
1368         am_starting_up = 0;
1369
1370         return 1;
1371 }
1372
1373
1374 /**
1375  * Construct a filtered list of options to pass through from the
1376  * client to the server.
1377  *
1378  * This involves setting options that will tell the server how to
1379  * behave, and also filtering out options that are processed only
1380  * locally.
1381  **/
1382 void server_options(char **args,int *argc)
1383 {
1384         static char argstr[64];
1385         int ac = *argc;
1386         char *arg;
1387
1388         int i, x;
1389
1390         if (blocking_io == -1)
1391                 blocking_io = 0;
1392
1393         args[ac++] = "--server";
1394
1395         if (daemon_over_rsh) {
1396                 args[ac++] = "--daemon";
1397                 *argc = ac;
1398                 /* if we're passing --daemon, we're done */
1399                 return;
1400         }
1401
1402         if (!am_sender)
1403                 args[ac++] = "--sender";
1404
1405         x = 1;
1406         argstr[0] = '-';
1407         for (i = 0; i < verbose; i++)
1408                 argstr[x++] = 'v';
1409
1410         /* the -q option is intentionally left out */
1411         if (make_backups)
1412                 argstr[x++] = 'b';
1413         if (update_only)
1414                 argstr[x++] = 'u';
1415         if (!do_xfers) /* NOT "dry_run"! */
1416                 argstr[x++] = 'n';
1417         if (preserve_links)
1418                 argstr[x++] = 'l';
1419         if (copy_links)
1420                 argstr[x++] = 'L';
1421         if (xfer_dirs > 1)
1422                 argstr[x++] = 'd';
1423         if (keep_dirlinks && am_sender)
1424                 argstr[x++] = 'K';
1425
1426         if (whole_file > 0)
1427                 argstr[x++] = 'W';
1428         /* We don't need to send --no-whole-file, because it's the
1429          * default for remote transfers, and in any case old versions
1430          * of rsync will not understand it. */
1431
1432         if (preserve_hard_links)
1433                 argstr[x++] = 'H';
1434         if (preserve_uid)
1435                 argstr[x++] = 'o';
1436         if (preserve_gid)
1437                 argstr[x++] = 'g';
1438         if (preserve_devices)
1439                 argstr[x++] = 'D';
1440         if (preserve_times)
1441                 argstr[x++] = 't';
1442         if (omit_dir_times == 2 && am_sender)
1443                 argstr[x++] = 'O';
1444         if (preserve_perms)
1445                 argstr[x++] = 'p';
1446         if (recurse)
1447                 argstr[x++] = 'r';
1448         if (always_checksum)
1449                 argstr[x++] = 'c';
1450         if (cvs_exclude)
1451                 argstr[x++] = 'C';
1452         if (ignore_times)
1453                 argstr[x++] = 'I';
1454         if (relative_paths)
1455                 argstr[x++] = 'R';
1456         if (one_file_system)
1457                 argstr[x++] = 'x';
1458         if (sparse_files)
1459                 argstr[x++] = 'S';
1460         if (do_compression)
1461                 argstr[x++] = 'z';
1462
1463         /* This is a complete hack - blame Rusty.  FIXME!
1464          * This hack is only needed for older rsync versions that
1465          * don't understand the --list-only option. */
1466         if (list_only == 1 && !recurse)
1467                 argstr[x++] = 'r';
1468
1469         argstr[x] = 0;
1470
1471         if (x != 1)
1472                 args[ac++] = argstr;
1473
1474         if (list_only > 1)
1475                 args[ac++] = "--list-only";
1476
1477         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1478                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1479                         goto oom;
1480                 args[ac++] = arg;
1481         }
1482
1483         /* The server side doesn't use our log-format, but in certain
1484          * circumstances they need to know a little about the option. */
1485         if (log_format && am_sender) {
1486                 if (log_format_has_i)
1487                         args[ac++] = "--log-format=%i";
1488                 else if (log_format_has_o_or_i)
1489                         args[ac++] = "--log-format=%o";
1490                 else if (!verbose)
1491                         args[ac++] = "--log-format=X";
1492         }
1493
1494         if (block_size) {
1495                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1496                         goto oom;
1497                 args[ac++] = arg;
1498         }
1499
1500         if (max_delete && am_sender) {
1501                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1502                         goto oom;
1503                 args[ac++] = arg;
1504         }
1505
1506         if (min_size && am_sender) {
1507                 args[ac++] = "--min-size";
1508                 args[ac++] = min_size_arg;
1509         }
1510
1511         if (max_size && am_sender) {
1512                 args[ac++] = "--max-size";
1513                 args[ac++] = max_size_arg;
1514         }
1515
1516         if (io_timeout) {
1517                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1518                         goto oom;
1519                 args[ac++] = arg;
1520         }
1521
1522         if (bwlimit) {
1523                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1524                         goto oom;
1525                 args[ac++] = arg;
1526         }
1527
1528         if (backup_dir) {
1529                 args[ac++] = "--backup-dir";
1530                 args[ac++] = backup_dir;
1531         }
1532
1533         /* Only send --suffix if it specifies a non-default value. */
1534         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1535                 /* We use the following syntax to avoid weirdness with '~'. */
1536                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1537                         goto oom;
1538                 args[ac++] = arg;
1539         }
1540
1541         if (am_sender) {
1542                 if (delete_excluded)
1543                         args[ac++] = "--delete-excluded";
1544                 else if (delete_before == 1 || delete_after)
1545                         args[ac++] = "--delete";
1546                 if (delete_before > 1)
1547                         args[ac++] = "--delete-before";
1548                 if (delete_during)
1549                         args[ac++] = "--delete-during";
1550                 if (delete_after)
1551                         args[ac++] = "--delete-after";
1552                 if (force_delete)
1553                         args[ac++] = "--force";
1554                 if (write_batch < 0)
1555                         args[ac++] = "--only-write-batch=X";
1556         }
1557
1558         if (size_only)
1559                 args[ac++] = "--size-only";
1560
1561         if (modify_window_set) {
1562                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1563                         goto oom;
1564                 args[ac++] = arg;
1565         }
1566
1567         if (checksum_seed) {
1568                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1569                         goto oom;
1570                 args[ac++] = arg;
1571         }
1572
1573         if (partial_dir && am_sender) {
1574                 if (partial_dir != partialdir_for_delayupdate) {
1575                         args[ac++] = "--partial-dir";
1576                         args[ac++] = partial_dir;
1577                 }
1578                 if (delay_updates)
1579                         args[ac++] = "--delay-updates";
1580         } else if (keep_partial)
1581                 args[ac++] = "--partial";
1582
1583         if (ignore_errors)
1584                 args[ac++] = "--ignore-errors";
1585
1586         if (copy_unsafe_links)
1587                 args[ac++] = "--copy-unsafe-links";
1588
1589         if (safe_symlinks)
1590                 args[ac++] = "--safe-links";
1591
1592         if (numeric_ids)
1593                 args[ac++] = "--numeric-ids";
1594
1595         if (ignore_existing && am_sender)
1596                 args[ac++] = "--ignore-existing";
1597
1598         /* Backward compatibility: send --existing, not --ignore-non-existing. */
1599         if (ignore_non_existing && am_sender)
1600                 args[ac++] = "--existing";
1601
1602         if (append_mode)
1603                 args[ac++] = "--append";
1604         else if (inplace)
1605                 args[ac++] = "--inplace";
1606
1607         if (tmpdir) {
1608                 args[ac++] = "--temp-dir";
1609                 args[ac++] = tmpdir;
1610         }
1611
1612         if (basis_dir[0] && am_sender) {
1613                 /* the server only needs this option if it is not the sender,
1614                  *   and it may be an older version that doesn't know this
1615                  *   option, so don't send it if client is the sender.
1616                  */
1617                 int i;
1618                 for (i = 0; i < basis_dir_cnt; i++) {
1619                         args[ac++] = dest_option;
1620                         args[ac++] = basis_dir[i];
1621                 }
1622         }
1623
1624         if (chmod_mode && !am_sender) {
1625                 args[ac++] = "--chmod";
1626                 args[ac++] = chmod_mode;
1627         }
1628
1629         if (files_from && (!am_sender || filesfrom_host)) {
1630                 if (filesfrom_host) {
1631                         args[ac++] = "--files-from";
1632                         args[ac++] = files_from;
1633                         if (eol_nulls)
1634                                 args[ac++] = "--from0";
1635                 } else {
1636                         args[ac++] = "--files-from=-";
1637                         args[ac++] = "--from0";
1638                 }
1639                 if (!relative_paths)
1640                         args[ac++] = "--no-relative";
1641         }
1642         if (relative_paths && !implied_dirs && !am_sender)
1643                 args[ac++] = "--no-implied-dirs";
1644
1645         if (fuzzy_basis && am_sender)
1646                 args[ac++] = "--fuzzy";
1647
1648         if (remove_sent_files)
1649                 args[ac++] = "--remove-sent-files";
1650
1651         *argc = ac;
1652         return;
1653
1654     oom:
1655         out_of_memory("server_options");
1656 }
1657
1658 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
1659  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
1660  * memory with the HOST.  If a daemon-accessing spec was specified, the value
1661  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
1662  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
1663  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
1664  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
1665 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
1666 {
1667         char *p;
1668         int not_host;
1669
1670         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
1671                 char *path;
1672                 int hostlen;
1673                 s += strlen(URL_PREFIX);
1674                 if ((p = strchr(s, '/')) != NULL) {
1675                         hostlen = p - s;
1676                         path = p + 1;
1677                 } else {
1678                         hostlen = strlen(s);
1679                         path = "";
1680                 }
1681                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
1682                         s++;
1683                         hostlen = p - s;
1684                         if (p[1] == ':')
1685                                 *port_ptr = atoi(p+2);
1686                 } else {
1687                         if ((p = strchr(s, ':')) != NULL) {
1688                                 hostlen = p - s;
1689                                 *port_ptr = atoi(p+1);
1690                         }
1691                 }
1692                 if (!*port_ptr)
1693                         *port_ptr = RSYNC_PORT;
1694                 *host_ptr = new_array(char, hostlen + 1);
1695                 strlcpy(*host_ptr, s, hostlen + 1);
1696                 return path;
1697         }
1698
1699         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
1700                 s++;
1701                 *p = '\0';
1702                 not_host = strchr(s, '/') || !strchr(s, ':');
1703                 *p = ']';
1704                 if (not_host)
1705                         return NULL;
1706                 p++;
1707         } else {
1708                 if (!(p = strchr(s, ':')))
1709                         return NULL;
1710                 *p = '\0';
1711                 not_host = strchr(s, '/') != NULL;
1712                 *p = ':';
1713                 if (not_host)
1714                         return NULL;
1715         }
1716
1717         *host_ptr = new_array(char, p - s + 1);
1718         strlcpy(*host_ptr, s, p - s + 1);
1719
1720         if (p[1] == ':') {
1721                 if (port_ptr && !*port_ptr)
1722                         *port_ptr = RSYNC_PORT;
1723                 return p + 2;
1724         }
1725         if (port_ptr)
1726                 *port_ptr = 0;
1727
1728         return p + 1;
1729 }