d8993c828b2282dcb6e76fcb0d9684dbbb44c8f2
[rsync.git] / options.c
1 /*
2  * Command-line (and received via daemon-socket) option parsing.
3  *
4  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
5  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
6  * Copyright (C) 2002-2007 Wayne Davison
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with this program; if not, visit the http://fsf.org website.
20  */
21
22 #include "rsync.h"
23 #include "ifuncs.h"
24 #include <popt.h>
25 #include "zlib/zlib.h"
26
27 extern int module_id;
28 extern int sanitize_paths;
29 extern int daemon_over_rsh;
30 extern struct filter_list_struct filter_list;
31 extern struct filter_list_struct server_filter_list;
32
33 int make_backups = 0;
34
35 /**
36  * If 1, send the whole file as literal data rather than trying to
37  * create an incremental diff.
38  *
39  * If -1, then look at whether we're local or remote and go by that.
40  *
41  * @sa disable_deltas_p()
42  **/
43 int whole_file = -1;
44
45 int append_mode = 0;
46 int keep_dirlinks = 0;
47 int copy_dirlinks = 0;
48 int copy_links = 0;
49 int preserve_links = 0;
50 int preserve_hard_links = 0;
51 int preserve_acls = 0;
52 int preserve_xattrs = 0;
53 int preserve_perms = 0;
54 int preserve_executability = 0;
55 int preserve_devices = 0;
56 int preserve_specials = 0;
57 int preserve_uid = 0;
58 int preserve_gid = 0;
59 int preserve_times = 0;
60 int update_only = 0;
61 int cvs_exclude = 0;
62 int dry_run = 0;
63 int do_xfers = 1;
64 int ignore_times = 0;
65 int delete_mode = 0;
66 int delete_during = 0;
67 int delete_before = 0;
68 int delete_after = 0;
69 int delete_excluded = 0;
70 int remove_source_files = 0;
71 int one_file_system = 0;
72 int protocol_version = PROTOCOL_VERSION;
73 int sparse_files = 0;
74 int do_compression = 0;
75 int def_compress_level = Z_DEFAULT_COMPRESSION;
76 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
77 int am_server = 0;
78 int am_sender = 0;
79 int am_generator = 0;
80 int am_starting_up = 1;
81 int relative_paths = -1;
82 int implied_dirs = 1;
83 int numeric_ids = 0;
84 int allow_8bit_chars = 0;
85 int force_delete = 0;
86 int io_timeout = 0;
87 int allowed_lull = 0;
88 int prune_empty_dirs = 0;
89 int use_qsort = 0;
90 char *files_from = NULL;
91 int filesfrom_fd = -1;
92 char *filesfrom_host = NULL;
93 int eol_nulls = 0;
94 int protect_args = 0;
95 int human_readable = 0;
96 int recurse = 0;
97 int allow_inc_recurse = 1;
98 int xfer_dirs = -1;
99 int am_daemon = 0;
100 int do_stats = 0;
101 int do_progress = 0;
102 int keep_partial = 0;
103 int safe_symlinks = 0;
104 int copy_unsafe_links = 0;
105 int size_only = 0;
106 int daemon_bwlimit = 0;
107 int bwlimit = 0;
108 int fuzzy_basis = 0;
109 size_t bwlimit_writemax = 0;
110 int ignore_existing = 0;
111 int ignore_non_existing = 0;
112 int need_messages_from_generator = 0;
113 int max_delete = INT_MIN;
114 OFF_T max_size = 0;
115 OFF_T min_size = 0;
116 int ignore_errors = 0;
117 int modify_window = 0;
118 int blocking_io = -1;
119 int checksum_seed = 0;
120 int inplace = 0;
121 int delay_updates = 0;
122 long block_size = 0; /* "long" because popt can't set an int32. */
123 char *skip_compress = NULL;
124
125 /** Network address family. **/
126 int default_af_hint
127 #ifdef INET6
128         = 0;            /* Any protocol */
129 #else
130         = AF_INET;      /* Must use IPv4 */
131 # ifdef AF_INET6
132 #  undef AF_INET6
133 # endif
134 # define AF_INET6 AF_INET /* make -6 option a no-op */
135 #endif
136
137 /** Do not go into the background when run as --daemon.  Good
138  * for debugging and required for running as a service on W32,
139  * or under Unix process-monitors. **/
140 int no_detach
141 #if defined _WIN32 || defined __WIN32__
142         = 1;
143 #else
144         = 0;
145 #endif
146
147 int write_batch = 0;
148 int read_batch = 0;
149 int backup_dir_len = 0;
150 int backup_suffix_len;
151 unsigned int backup_dir_remainder;
152
153 char *backup_suffix = NULL;
154 char *tmpdir = NULL;
155 char *partial_dir = NULL;
156 char *basis_dir[MAX_BASIS_DIRS+1];
157 char *config_file = NULL;
158 char *shell_cmd = NULL;
159 char *logfile_name = NULL;
160 char *logfile_format = NULL;
161 char *stdout_format = NULL;
162 char *password_file = NULL;
163 char *rsync_path = RSYNC_PATH;
164 char *backup_dir = NULL;
165 char backup_dir_buf[MAXPATHLEN];
166 char *sockopts = NULL;
167 int rsync_port = 0;
168 int compare_dest = 0;
169 int copy_dest = 0;
170 int link_dest = 0;
171 int basis_dir_cnt = 0;
172 char *dest_option = NULL;
173
174 int verbose = 0;
175 int quiet = 0;
176 int output_motd = 1;
177 int log_before_transfer = 0;
178 int stdout_format_has_i = 0;
179 int stdout_format_has_o_or_i = 0;
180 int logfile_format_has_i = 0;
181 int logfile_format_has_o_or_i = 0;
182 int always_checksum = 0;
183 int list_only = 0;
184
185 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
186 char *batch_name = NULL;
187
188 #ifdef ICONV_OPTION
189 int need_unsorted_flist = 0;
190 char *iconv_opt = ICONV_OPTION;
191 #endif
192
193 struct chmod_mode_struct *chmod_modes = NULL;
194
195 static int daemon_opt;   /* sets am_daemon after option error-reporting */
196 static int omit_dir_times = 0;
197 static int F_option_cnt = 0;
198 static int modify_window_set;
199 static int itemize_changes = 0;
200 static int refused_delete, refused_archive_part, refused_compress;
201 static int refused_partial, refused_progress, refused_delete_before;
202 static int refused_delete_during;
203 static int refused_inplace;
204 static char *max_size_arg, *min_size_arg;
205 static char tmp_partialdir[] = ".~tmp~";
206
207 /** Local address to bind.  As a character string because it's
208  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
209  * address, or a hostname. **/
210 char *bind_address;
211
212
213 static void print_rsync_version(enum logcode f)
214 {
215         char *subprotocol = "";
216         char const *got_socketpair = "no ";
217         char const *have_inplace = "no ";
218         char const *hardlinks = "no ";
219         char const *acls = "no ";
220         char const *xattrs = "no ";
221         char const *links = "no ";
222         char const *iconv = "no ";
223         char const *ipv6 = "no ";
224         STRUCT_STAT *dumstat;
225
226 #if SUBPROTOCOL_VERSION != 0
227         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
228 #endif
229 #ifdef HAVE_SOCKETPAIR
230         got_socketpair = "";
231 #endif
232 #ifdef HAVE_FTRUNCATE
233         have_inplace = "";
234 #endif
235 #ifdef SUPPORT_HARD_LINKS
236         hardlinks = "";
237 #endif
238 #ifdef SUPPORT_ACLS
239         acls = "";
240 #endif
241 #ifdef SUPPORT_XATTRS
242         xattrs = "";
243 #endif
244 #ifdef SUPPORT_LINKS
245         links = "";
246 #endif
247 #ifdef INET6
248         ipv6 = "";
249 #endif
250 #ifdef ICONV_OPTION
251         iconv = "";
252 #endif
253
254         rprintf(f, "%s  version %s  protocol version %d%s\n",
255                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
256         rprintf(f, "Copyright (C) 1996-2007 by Andrew Tridgell, Wayne Davison, and others.\n");
257         rprintf(f, "Web site: http://rsync.samba.org/\n");
258         rprintf(f, "Capabilities:\n");
259         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
260                 (int)(sizeof (OFF_T) * 8),
261                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
262                 (int)(sizeof (time_t) * 8),
263                 (int)(sizeof (int64) * 8));
264         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
265                 got_socketpair, hardlinks, links, ipv6, have_inplace);
266         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv\n",
267                 have_inplace, acls, xattrs, iconv);
268
269 #ifdef MAINTAINER_MODE
270         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
271 #endif
272
273 #if SIZEOF_INT64 < 8
274         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
275 #endif
276         if (sizeof (int64) != SIZEOF_INT64) {
277                 rprintf(f,
278                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
279                         (int) SIZEOF_INT64, (int) sizeof (int64));
280         }
281
282         rprintf(f,"\n");
283         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
284         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
285         rprintf(f,"General Public Licence for details.\n");
286 }
287
288
289 void usage(enum logcode F)
290 {
291   print_rsync_version(F);
292
293   rprintf(F,"\n");
294   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
295   rprintf(F,"via a fast differencing algorithm.\n");
296
297   rprintf(F,"\n");
298   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
299   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
300   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
301   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
302   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
303   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
304   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
305   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
306   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
307   rprintf(F,"\n");
308   rprintf(F,"Options\n");
309   rprintf(F," -v, --verbose               increase verbosity\n");
310   rprintf(F," -q, --quiet                 suppress non-error messages\n");
311   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
312   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
313   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
314   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
315   rprintf(F," -r, --recursive             recurse into directories\n");
316   rprintf(F," -R, --relative              use relative path names\n");
317   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
318   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
319   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
320   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
321   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
322   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
323   rprintf(F,"     --append                append data onto shorter files\n");
324   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
325   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
326   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
327   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
328   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
329   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
330   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
331   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
332   rprintf(F," -H, --hard-links            preserve hard links\n");
333   rprintf(F," -p, --perms                 preserve permissions\n");
334   rprintf(F," -E, --executability         preserve the file's executability\n");
335   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
336 #ifdef SUPPORT_ACLS
337   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
338 #endif
339 #ifdef SUPPORT_XATTRS
340   rprintf(F," -X, --xattrs                preserve extended attributes\n");
341 #endif
342   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
343   rprintf(F," -g, --group                 preserve group\n");
344   rprintf(F,"     --devices               preserve device files (super-user only)\n");
345   rprintf(F,"     --specials              preserve special files\n");
346   rprintf(F," -D                          same as --devices --specials\n");
347   rprintf(F," -t, --times                 preserve modification times\n");
348   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
349   rprintf(F,"     --super                 receiver attempts super-user activities\n");
350 #ifdef SUPPORT_XATTRS
351   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
352 #endif
353   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
354   rprintf(F," -n, --dry-run               show what would have been transferred\n");
355   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
356   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
357   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
358   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
359   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
360   rprintf(F,"     --existing              skip creating new files on receiver\n");
361   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
362   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
363   rprintf(F,"     --del                   an alias for --delete-during\n");
364   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
365   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
366   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
367   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
368   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
369   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
370   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
371   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
372   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
373   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
374   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
375   rprintf(F,"     --partial               keep partially transferred files\n");
376   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
377   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
378   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
379   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
380   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
381   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
382   rprintf(F,"     --size-only             skip files that match in size\n");
383   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
384   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
385   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
386   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
387   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
388   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
389   rprintf(F," -z, --compress              compress file data during the transfer\n");
390   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
391   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
392   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
393   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
394   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
395   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
396   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
397   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
398   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
399   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
400   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
401   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
402   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
403   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
404   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
405   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
406   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
407   rprintf(F,"     --stats                 give some file-transfer stats\n");
408   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
409   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
410   rprintf(F,"     --progress              show progress during transfer\n");
411   rprintf(F," -P                          same as --partial --progress\n");
412   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
413   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
414   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
415   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
416   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
417   rprintf(F,"     --list-only             list the files instead of copying them\n");
418   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
419   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
420   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
421   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
422   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
423 #ifdef ICONV_OPTION
424   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filesnames\n");
425 #endif
426   rprintf(F," -4, --ipv4                  prefer IPv4\n");
427   rprintf(F," -6, --ipv6                  prefer IPv6\n");
428   rprintf(F,"     --version               print version number\n");
429   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
430
431   rprintf(F,"\n");
432   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
433   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
434   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
435 }
436
437 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
438       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
439       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
440       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
441       OPT_NO_D, OPT_APPEND,
442       OPT_SERVER, OPT_REFUSED_BASE = 9000};
443
444 static struct poptOption long_options[] = {
445   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
446   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
447   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
448   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
449   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
450   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
451   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
452   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
453   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
454   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
455   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
456   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
457   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
458   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
459   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
460   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
461   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
462   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
463   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
464   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
465   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
466   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
467   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
468   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
469   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
470   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
471   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
472   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
473   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
474   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
475   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
476   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
477   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
478   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
479   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
480   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
481   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
482   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
483   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
484   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
485   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
486   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
487   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
488   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
489   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
490   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
491   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
492   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
493   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
494   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
495   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
496   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
497   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
498   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
499   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
500   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
501   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
502   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
503   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
504   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
505   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
506   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
507   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
508   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
509   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
510   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
511   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
512   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
513   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
514   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
515   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
516   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
517   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
518   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
519   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
520   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
521   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
522   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
523   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
524   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
525   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
526   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
527   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
528   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
529   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
530   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
531   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
532   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
533   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
534   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
535   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
536   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
537   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
538   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
539   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
540   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
541   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
542   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
543   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
544   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
545   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
546   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
547   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
548   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
549   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
550   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
551   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
552   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
553   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
554   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
555   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
556   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
557   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
558   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
559   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
560   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
561   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
562   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
563   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
564   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
565   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
566   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
567   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
568   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
569   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
570   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
571   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
572   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
573   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
574   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
575   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
576   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
577   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
578   {"prune-empty-dirs",'m', POPT_ARG_NONE,   &prune_empty_dirs, 0, 0, 0 },
579   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
580   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
581   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
582   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
583   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
584   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
585   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
586   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
587   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
588   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
589   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
590   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
591   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
592   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
593   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
594   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
595   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
596   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
597   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
598   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
599   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
600   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
601   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
602   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
603   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
604   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
605   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
606   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
607   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
608   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
609 #ifdef ICONV_OPTION
610   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
611 #endif
612   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
613   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
614   {"8-bit-output",    '8', POPT_ARG_NONE,   &allow_8bit_chars, 0, 0, 0 },
615   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
616   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
617   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
618   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
619   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
620   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
621   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
622   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
623   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
624   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
625   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
626   /* All the following options switch us into daemon-mode option-parsing. */
627   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
628   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
629   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
630   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
631   {0,0,0,0, 0, 0, 0}
632 };
633
634 static void daemon_usage(enum logcode F)
635 {
636   print_rsync_version(F);
637
638   rprintf(F,"\n");
639   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
640   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
641   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
642   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
643   rprintf(F,"     --no-detach             do not detach from the parent\n");
644   rprintf(F,"     --port=PORT             listen on alternate port number\n");
645   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
646   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
647   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
648   rprintf(F," -v, --verbose               increase verbosity\n");
649   rprintf(F," -4, --ipv4                  prefer IPv4\n");
650   rprintf(F," -6, --ipv6                  prefer IPv6\n");
651   rprintf(F,"     --help                  show this help screen\n");
652
653   rprintf(F,"\n");
654   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
655   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
656 }
657
658 static struct poptOption long_daemon_options[] = {
659   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
660   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
661   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
662   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
663   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
664   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
665   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
666   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
667   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
668   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
669   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
670   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
671   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
672   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
673   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
674   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
675   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
676   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
677   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
678   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
679   {0,0,0,0, 0, 0, 0}
680 };
681
682
683 static char err_buf[200];
684
685
686 /**
687  * Store the option error message, if any, so that we can log the
688  * connection attempt (which requires parsing the options), and then
689  * show the error later on.
690  **/
691 void option_error(void)
692 {
693         if (!err_buf[0]) {
694                 strlcpy(err_buf, "Error parsing options: option may "
695                         "be supported on client but not on server?\n",
696                         sizeof err_buf);
697         }
698
699         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
700         msleep(20);
701 }
702
703
704 /**
705  * Tweak the option table to disable all options that the rsyncd.conf
706  * file has told us to refuse.
707  **/
708 static void set_refuse_options(char *bp)
709 {
710         struct poptOption *op;
711         char *cp, shortname[2];
712         int is_wild, found_match;
713
714         shortname[1] = '\0';
715
716         while (1) {
717                 while (*bp == ' ') bp++;
718                 if (!*bp)
719                         break;
720                 if ((cp = strchr(bp, ' ')) != NULL)
721                         *cp= '\0';
722                 is_wild = strpbrk(bp, "*?[") != NULL;
723                 found_match = 0;
724                 for (op = long_options; ; op++) {
725                         *shortname = op->shortName;
726                         if (!op->longName && !*shortname)
727                                 break;
728                         if ((op->longName && wildmatch(bp, op->longName))
729                             || (*shortname && wildmatch(bp, shortname))) {
730                                 if (op->argInfo == POPT_ARG_VAL)
731                                         op->argInfo = POPT_ARG_NONE;
732                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
733                                 found_match = 1;
734                                 /* These flags are set to let us easily check
735                                  * an implied option later in the code. */
736                                 switch (*shortname) {
737                                 case 'r': case 'd': case 'l': case 'p':
738                                 case 't': case 'g': case 'o': case 'D':
739                                         refused_archive_part = op->val;
740                                         break;
741                                 case 'z':
742                                         refused_compress = op->val;
743                                         break;
744                                 case '\0':
745                                         if (wildmatch("delete", op->longName))
746                                                 refused_delete = op->val;
747                                         else if (wildmatch("delete-before", op->longName))
748                                                 refused_delete_before = op->val;
749                                         else if (wildmatch("delete-during", op->longName))
750                                                 refused_delete_during = op->val;
751                                         else if (wildmatch("partial", op->longName))
752                                                 refused_partial = op->val;
753                                         else if (wildmatch("progress", op->longName))
754                                                 refused_progress = op->val;
755                                         else if (wildmatch("inplace", op->longName))
756                                                 refused_inplace = op->val;
757                                         break;
758                                 }
759                                 if (!is_wild)
760                                         break;
761                         }
762                 }
763                 if (!found_match) {
764                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
765                                 bp);
766                 }
767                 if (!cp)
768                         break;
769                 *cp = ' ';
770                 bp = cp + 1;
771         }
772 }
773
774
775 static int count_args(const char **argv)
776 {
777         int i = 0;
778
779         if (argv) {
780                 while (argv[i] != NULL)
781                         i++;
782         }
783
784         return i;
785 }
786
787
788 static OFF_T parse_size_arg(char **size_arg, char def_suf)
789 {
790         int reps, mult, make_compatible = 0;
791         const char *arg;
792         OFF_T size = 1;
793
794         for (arg = *size_arg; isDigit(arg); arg++) {}
795         if (*arg == '.')
796                 for (arg++; isDigit(arg); arg++) {}
797         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
798         case 'b': case 'B':
799                 reps = 0;
800                 break;
801         case 'k': case 'K':
802                 reps = 1;
803                 break;
804         case 'm': case 'M':
805                 reps = 2;
806                 break;
807         case 'g': case 'G':
808                 reps = 3;
809                 break;
810         default:
811                 return -1;
812         }
813         if (*arg == 'b' || *arg == 'B')
814                 mult = 1000, make_compatible = 1, arg++;
815         else if (!*arg || *arg == '+' || *arg == '-')
816                 mult = 1024;
817         else if (strncasecmp(arg, "ib", 2) == 0)
818                 mult = 1024, arg += 2;
819         else
820                 return -1;
821         while (reps--)
822                 size *= mult;
823         size *= atof(*size_arg);
824         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
825                 size += atoi(arg), make_compatible = 1, arg += 2;
826         if (*arg)
827                 return -1;
828         if (size > 0 && make_compatible) {
829                 /* We convert this manually because we may need %lld precision,
830                  * and that's not a portable sprintf() escape. */
831                 char buf[128], *s = buf + sizeof buf - 1;
832                 OFF_T num = size;
833                 *s = '\0';
834                 while (num) {
835                         *--s = (char)(num % 10) + '0';
836                         num /= 10;
837                 }
838                 if (!(*size_arg = strdup(s)))
839                         out_of_memory("parse_size_arg");
840         }
841         return size;
842 }
843
844
845 static void create_refuse_error(int which)
846 {
847         /* The "which" value is the index + OPT_REFUSED_BASE. */
848         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
849         int n = snprintf(err_buf, sizeof err_buf,
850                          "The server is configured to refuse --%s\n",
851                          op->longName) - 1;
852         if (op->shortName) {
853                 snprintf(err_buf + n, sizeof err_buf - n,
854                          " (-%c)\n", op->shortName);
855         }
856 }
857
858
859 /**
860  * Process command line arguments.  Called on both local and remote.
861  *
862  * @retval 1 if all options are OK; with globals set to appropriate
863  * values
864  *
865  * @retval 0 on error, with err_buf containing an explanation
866  **/
867 int parse_arguments(int *argc_p, const char ***argv_p, int frommain)
868 {
869         static poptContext pc;
870         char *ref = lp_refuse_options(module_id);
871         const char *arg, **argv = *argv_p;
872         int argc = *argc_p;
873         int opt;
874
875         if (ref && *ref)
876                 set_refuse_options(ref);
877         if (am_daemon)
878                 set_refuse_options("log-file*");
879
880 #ifdef ICONV_OPTION
881         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
882                 iconv_opt = strdup(arg);
883 #endif
884
885         /* TODO: Call poptReadDefaultConfig; handle errors. */
886
887         /* The context leaks in case of an error, but if there's a
888          * problem we always exit anyhow. */
889         if (pc)
890                 poptFreeContext(pc);
891         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
892         if (!am_server)
893                 poptReadDefaultConfig(pc, 0);
894
895         while ((opt = poptGetNextOpt(pc)) != -1) {
896                 /* most options are handled automatically by popt;
897                  * only special cases are returned and listed here. */
898
899                 switch (opt) {
900                 case OPT_VERSION:
901                         print_rsync_version(FINFO);
902                         exit_cleanup(0);
903
904                 case OPT_SERVER:
905                         if (!am_server) {
906                                 /* Disable popt aliases on the server side and
907                                  * then start parsing the options again. */
908                                 poptFreeContext(pc);
909                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
910                                                     long_options, 0);
911                                 am_server = 1;
912                         }
913 #ifdef ICONV_OPTION
914                         iconv_opt = NULL;
915 #endif
916                         break;
917
918                 case OPT_SENDER:
919                         if (!am_server) {
920                                 usage(FERROR);
921                                 exit_cleanup(RERR_SYNTAX);
922                         }
923                         am_sender = 1;
924                         break;
925
926                 case OPT_DAEMON:
927                         if (am_daemon) {
928                                 strlcpy(err_buf,
929                                         "Attempt to hack rsync thwarted!\n",
930                                         sizeof err_buf);
931                                 return 0;
932                         }
933 #ifdef ICONV_OPTION
934                         iconv_opt = NULL;
935 #endif
936                         poptFreeContext(pc);
937                         pc = poptGetContext(RSYNC_NAME, argc, argv,
938                                             long_daemon_options, 0);
939                         while ((opt = poptGetNextOpt(pc)) != -1) {
940                                 switch (opt) {
941                                 case 'h':
942                                         daemon_usage(FINFO);
943                                         exit_cleanup(0);
944
945                                 case 'v':
946                                         verbose++;
947                                         break;
948
949                                 default:
950                                         rprintf(FERROR,
951                                             "rsync: %s: %s (in daemon mode)\n",
952                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
953                                             poptStrerror(opt));
954                                         goto daemon_error;
955                                 }
956                         }
957
958                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
959                                 snprintf(err_buf, sizeof err_buf,
960                                          "the --temp-dir path is WAY too long.\n");
961                                 return 0;
962                         }
963
964                         if (!daemon_opt) {
965                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
966                             daemon_error:
967                                 rprintf(FERROR,
968                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
969                                 exit_cleanup(RERR_SYNTAX);
970                         }
971
972                         *argv_p = argv = poptGetArgs(pc);
973                         *argc_p = argc = count_args(argv);
974                         am_starting_up = 0;
975                         daemon_opt = 0;
976                         am_daemon = 1;
977                         return 1;
978
979                 case OPT_MODIFY_WINDOW:
980                         /* The value has already been set by popt, but
981                          * we need to remember that we're using a
982                          * non-default setting. */
983                         modify_window_set = 1;
984                         break;
985
986                 case OPT_FILTER:
987                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
988                         break;
989
990                 case OPT_EXCLUDE:
991                         parse_rule(&filter_list, poptGetOptArg(pc),
992                                    0, XFLG_OLD_PREFIXES);
993                         break;
994
995                 case OPT_INCLUDE:
996                         parse_rule(&filter_list, poptGetOptArg(pc),
997                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
998                         break;
999
1000                 case OPT_EXCLUDE_FROM:
1001                 case OPT_INCLUDE_FROM:
1002                         arg = poptGetOptArg(pc);
1003                         if (sanitize_paths)
1004                                 arg = sanitize_path(NULL, arg, NULL, 0, NULL);
1005                         if (server_filter_list.head) {
1006                                 char *cp = strdup(arg);
1007                                 if (!cp)
1008                                         out_of_memory("parse_arguments");
1009                                 if (!*cp)
1010                                         goto options_rejected;
1011                                 clean_fname(cp, 1);
1012                                 if (check_filter(&server_filter_list, cp, 0) < 0)
1013                                         goto options_rejected;
1014                                 free(cp);
1015                         }
1016                         parse_filter_file(&filter_list, arg,
1017                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1018                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1019                         break;
1020
1021                 case 'a':
1022                         if (refused_archive_part) {
1023                                 create_refuse_error(refused_archive_part);
1024                                 return 0;
1025                         }
1026                         if (!recurse) /* preserve recurse == 2 */
1027                                 recurse = 1;
1028 #ifdef SUPPORT_LINKS
1029                         preserve_links = 1;
1030 #endif
1031                         preserve_perms = 1;
1032                         preserve_times = 2;
1033                         preserve_gid = 1;
1034                         preserve_uid = 1;
1035                         preserve_devices = 1;
1036                         preserve_specials = 1;
1037                         break;
1038
1039                 case 'D':
1040                         preserve_devices = preserve_specials = 1;
1041                         break;
1042
1043                 case OPT_NO_D:
1044                         preserve_devices = preserve_specials = 0;
1045                         break;
1046
1047                 case 'h':
1048                         human_readable++;
1049                         break;
1050
1051                 case 'H':
1052                         preserve_hard_links++;
1053                         break;
1054
1055                 case 'i':
1056                         itemize_changes++;
1057                         break;
1058
1059                 case 'v':
1060                         verbose++;
1061                         break;
1062
1063                 case 'q':
1064                         if (frommain)
1065                                 quiet++;
1066                         break;
1067
1068                 case 'x':
1069                         one_file_system++;
1070                         break;
1071
1072                 case 'F':
1073                         switch (++F_option_cnt) {
1074                         case 1:
1075                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1076                                 break;
1077                         case 2:
1078                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1079                                 break;
1080                         }
1081                         break;
1082
1083                 case 'P':
1084                         if (refused_partial || refused_progress) {
1085                                 create_refuse_error(refused_partial
1086                                     ? refused_partial : refused_progress);
1087                                 return 0;
1088                         }
1089                         do_progress = 1;
1090                         keep_partial = 1;
1091                         break;
1092
1093                 case 'z':
1094                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1095                          || def_compress_level > Z_BEST_COMPRESSION) {
1096                                 snprintf(err_buf, sizeof err_buf,
1097                                         "--compress-level value is invalid: %d\n",
1098                                         def_compress_level);
1099                                 return 0;
1100                         }
1101                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1102                         if (do_compression && refused_compress) {
1103                                 create_refuse_error(refused_compress);
1104                                 return 0;
1105                         }
1106                         break;
1107
1108                 case OPT_WRITE_BATCH:
1109                         /* batch_name is already set */
1110                         write_batch = 1;
1111                         break;
1112
1113                 case OPT_ONLY_WRITE_BATCH:
1114                         /* batch_name is already set */
1115                         write_batch = -1;
1116                         break;
1117
1118                 case OPT_READ_BATCH:
1119                         /* batch_name is already set */
1120                         read_batch = 1;
1121                         break;
1122
1123                 case OPT_MAX_SIZE:
1124                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1125                                 snprintf(err_buf, sizeof err_buf,
1126                                         "--max-size value is invalid: %s\n",
1127                                         max_size_arg);
1128                                 return 0;
1129                         }
1130                         break;
1131
1132                 case OPT_MIN_SIZE:
1133                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1134                                 snprintf(err_buf, sizeof err_buf,
1135                                         "--min-size value is invalid: %s\n",
1136                                         min_size_arg);
1137                                 return 0;
1138                         }
1139                         break;
1140
1141                 case OPT_APPEND:
1142                         if (am_server)
1143                                 append_mode++;
1144                         else
1145                                 append_mode = 1;
1146                         break;
1147
1148                 case OPT_LINK_DEST:
1149 #ifdef SUPPORT_HARD_LINKS
1150                         link_dest = 1;
1151                         dest_option = "--link-dest";
1152                         goto set_dest_dir;
1153 #else
1154                         snprintf(err_buf, sizeof err_buf,
1155                                  "hard links are not supported on this %s\n",
1156                                  am_server ? "server" : "client");
1157                         return 0;
1158 #endif
1159
1160                 case OPT_COPY_DEST:
1161                         copy_dest = 1;
1162                         dest_option = "--copy-dest";
1163                         goto set_dest_dir;
1164
1165                 case OPT_COMPARE_DEST:
1166                         compare_dest = 1;
1167                         dest_option = "--compare-dest";
1168                 set_dest_dir:
1169                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1170                                 snprintf(err_buf, sizeof err_buf,
1171                                         "ERROR: at most %d %s args may be specified\n",
1172                                         MAX_BASIS_DIRS, dest_option);
1173                                 return 0;
1174                         }
1175                         /* We defer sanitizing this arg until we know what
1176                          * our destination directory is going to be. */
1177                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1178                         break;
1179
1180                 case OPT_CHMOD:
1181                         arg = poptGetOptArg(pc);
1182                         if (!parse_chmod(arg, &chmod_modes)) {
1183                                 snprintf(err_buf, sizeof err_buf,
1184                                     "Invalid argument passed to --chmod (%s)\n",
1185                                     arg);
1186                                 return 0;
1187                         }
1188                         break;
1189
1190                 case OPT_HELP:
1191                         usage(FINFO);
1192                         exit_cleanup(0);
1193
1194                 case 'A':
1195 #ifdef SUPPORT_ACLS
1196                         preserve_acls = 1;
1197                         preserve_perms = 1;
1198                         break;
1199 #else
1200                         /* FIXME: this should probably be ignored with a
1201                          * warning and then countermeasures taken to
1202                          * restrict group and other access in the presence
1203                          * of any more restrictive ACLs, but this is safe
1204                          * for now */
1205                         snprintf(err_buf,sizeof(err_buf),
1206                                  "ACLs are not supported on this %s\n",
1207                                  am_server ? "server" : "client");
1208                         return 0;
1209 #endif
1210
1211                 case 'X':
1212 #ifdef SUPPORT_XATTRS
1213                         preserve_xattrs++;
1214                         break;
1215 #else
1216                         snprintf(err_buf,sizeof(err_buf),
1217                                  "extended attributes are not supported on this %s\n",
1218                                  am_server ? "server" : "client");
1219                         return 0;
1220 #endif
1221
1222                 default:
1223                         /* A large opt value means that set_refuse_options()
1224                          * turned this option off. */
1225                         if (opt >= OPT_REFUSED_BASE) {
1226                                 create_refuse_error(opt);
1227                                 return 0;
1228                         }
1229                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1230                                  am_server ? "on remote machine: " : "",
1231                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1232                                  poptStrerror(opt));
1233                         return 0;
1234                 }
1235         }
1236
1237         if (human_readable && argc == 2) {
1238                 /* Allow the old meaning of 'h' (--help) on its own. */
1239                 usage(FINFO);
1240                 exit_cleanup(0);
1241         }
1242
1243 #ifdef ICONV_OPTION
1244         if (iconv_opt && protect_args != 2) {
1245                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1246                         iconv_opt = NULL;
1247                 else
1248                         need_unsorted_flist = 1;
1249         }
1250         setup_iconv();
1251 #endif
1252
1253         if (protect_args == 1) {
1254                 if (!frommain)
1255                         protect_args = 0;
1256                 else if (am_server)
1257                         return 1;
1258         }
1259
1260 #ifndef SUPPORT_LINKS
1261         if (preserve_links && !am_sender) {
1262                 snprintf(err_buf, sizeof err_buf,
1263                          "symlinks are not supported on this %s\n",
1264                          am_server ? "server" : "client");
1265                 return 0;
1266         }
1267 #endif
1268
1269 #ifndef SUPPORT_HARD_LINKS
1270         if (preserve_hard_links) {
1271                 snprintf(err_buf, sizeof err_buf,
1272                          "hard links are not supported on this %s\n",
1273                          am_server ? "server" : "client");
1274                 return 0;
1275         }
1276 #endif
1277
1278 #ifndef SUPPORT_XATTRS
1279         if (am_root < 0) {
1280                 snprintf(err_buf, sizeof err_buf,
1281                          "--fake-super requires an rsync with extended attributes enabled\n");
1282                 return 0;
1283         }
1284 #endif
1285
1286         if (write_batch && read_batch) {
1287                 snprintf(err_buf, sizeof err_buf,
1288                         "--write-batch and --read-batch can not be used together\n");
1289                 return 0;
1290         }
1291         if (write_batch > 0 || read_batch) {
1292                 if (am_server) {
1293                         rprintf(FINFO,
1294                                 "ignoring --%s-batch option sent to server\n",
1295                                 write_batch ? "write" : "read");
1296                         /* We don't actually exit_cleanup(), so that we can
1297                          * still service older version clients that still send
1298                          * batch args to server. */
1299                         read_batch = write_batch = 0;
1300                         batch_name = NULL;
1301                 } else if (dry_run)
1302                         write_batch = 0;
1303         }
1304         if (read_batch && files_from) {
1305                 snprintf(err_buf, sizeof err_buf,
1306                         "--read-batch cannot be used with --files-from\n");
1307                 return 0;
1308         }
1309         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1310                 snprintf(err_buf, sizeof err_buf,
1311                         "the batch-file name must be %d characters or less.\n",
1312                         MAX_BATCH_NAME_LEN);
1313                 return 0;
1314         }
1315
1316         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1317                 snprintf(err_buf, sizeof err_buf,
1318                          "the --temp-dir path is WAY too long.\n");
1319                 return 0;
1320         }
1321
1322         if (max_delete < 0 && max_delete != INT_MIN) {
1323                 /* Negative numbers are treated as "no deletions". */
1324                 max_delete = 0;
1325         }
1326
1327         if (compare_dest + copy_dest + link_dest > 1) {
1328                 snprintf(err_buf, sizeof err_buf,
1329                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1330                 return 0;
1331         }
1332
1333         if (files_from) {
1334                 if (recurse == 1) /* preserve recurse == 2 */
1335                         recurse = 0;
1336                 if (xfer_dirs < 0)
1337                         xfer_dirs = 1;
1338         }
1339
1340         if (xfer_dirs < 1)
1341                 xfer_dirs = recurse || list_only;
1342
1343         if (relative_paths < 0)
1344                 relative_paths = files_from? 1 : 0;
1345         if (!relative_paths)
1346                 implied_dirs = 0;
1347
1348         if (delete_before + !!delete_during + delete_after > 1) {
1349                 snprintf(err_buf, sizeof err_buf,
1350                         "You may not combine multiple --delete-WHEN options.\n");
1351                 return 0;
1352         }
1353         if (delete_before || delete_during || delete_after)
1354                 delete_mode = 1;
1355         else if (delete_mode || delete_excluded) {
1356                 /* Only choose now between before & during if one is refused. */
1357                 if (refused_delete_before) {
1358                         if (!refused_delete_during)
1359                                 delete_during = 1;
1360                         else {
1361                                 create_refuse_error(refused_delete_before);
1362                                 return 0;
1363                         }
1364                 } else if (refused_delete_during)
1365                         delete_before = 1;
1366                 delete_mode = 1;
1367         }
1368         if (!xfer_dirs && delete_mode) {
1369                 snprintf(err_buf, sizeof err_buf,
1370                         "--delete does not work without -r or -d.\n");
1371                 return 0;
1372         }
1373
1374         if (delete_mode && refused_delete) {
1375                 create_refuse_error(refused_delete);
1376                 return 0;
1377         }
1378
1379         if (remove_source_files) {
1380                 /* We only want to infer this refusal of --remove-source-files
1381                  * via the refusal of "delete", not any of the "delete-FOO"
1382                  * options. */
1383                 if (refused_delete && am_sender) {
1384                         create_refuse_error(refused_delete);
1385                         return 0;
1386                 }
1387                 need_messages_from_generator = 1;
1388         }
1389
1390         *argv_p = argv = poptGetArgs(pc);
1391         *argc_p = argc = count_args(argv);
1392
1393         if (sanitize_paths) {
1394                 int i;
1395                 for (i = argc; i-- > 0; )
1396                         argv[i] = sanitize_path(NULL, argv[i], "", 0, NULL);
1397                 if (tmpdir)
1398                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, NULL);
1399                 if (backup_dir)
1400                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, NULL);
1401         }
1402         if (server_filter_list.head && !am_sender) {
1403                 struct filter_list_struct *elp = &server_filter_list;
1404                 if (tmpdir) {
1405                         if (!*tmpdir)
1406                                 goto options_rejected;
1407                         clean_fname(tmpdir, 1);
1408                         if (check_filter(elp, tmpdir, 1) < 0)
1409                                 goto options_rejected;
1410                 }
1411                 if (backup_dir) {
1412                         if (!*backup_dir)
1413                                 goto options_rejected;
1414                         clean_fname(backup_dir, 1);
1415                         if (check_filter(elp, backup_dir, 1) < 0)
1416                                 goto options_rejected;
1417                 }
1418         }
1419
1420         if (!backup_suffix)
1421                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1422         backup_suffix_len = strlen(backup_suffix);
1423         if (strchr(backup_suffix, '/') != NULL) {
1424                 snprintf(err_buf, sizeof err_buf,
1425                         "--suffix cannot contain slashes: %s\n",
1426                         backup_suffix);
1427                 return 0;
1428         }
1429         if (backup_dir) {
1430                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1431                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1432                 if (backup_dir_remainder < 32) {
1433                         snprintf(err_buf, sizeof err_buf,
1434                                 "the --backup-dir path is WAY too long.\n");
1435                         return 0;
1436                 }
1437                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1438                         backup_dir_buf[backup_dir_len++] = '/';
1439                         backup_dir_buf[backup_dir_len] = '\0';
1440                 }
1441                 if (verbose > 1 && !am_sender)
1442                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1443         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1444                 snprintf(err_buf, sizeof err_buf,
1445                         "--suffix cannot be a null string without --backup-dir\n");
1446                 return 0;
1447         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1448                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1449                         "P *%s", backup_suffix);
1450                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1451         }
1452
1453         if (make_backups && !backup_dir) {
1454                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1455                 if (preserve_times > 1)
1456                         preserve_times = 1;
1457         } else if (omit_dir_times) {
1458                 if (preserve_times > 1)
1459                         preserve_times = 1;
1460         }
1461
1462         if (stdout_format) {
1463                 if (am_server && log_format_has(stdout_format, 'I'))
1464                         stdout_format_has_i = 2;
1465                 else if (log_format_has(stdout_format, 'i'))
1466                         stdout_format_has_i = itemize_changes | 1;
1467                 if (!log_format_has(stdout_format, 'b')
1468                  && !log_format_has(stdout_format, 'c'))
1469                         log_before_transfer = !am_server;
1470         } else if (itemize_changes) {
1471                 stdout_format = "%i %n%L";
1472                 stdout_format_has_i = itemize_changes;
1473                 log_before_transfer = !am_server;
1474         }
1475
1476         if (do_progress && !verbose && !log_before_transfer && !am_server)
1477                 verbose = 1;
1478
1479         if (dry_run)
1480                 do_xfers = 0;
1481
1482         set_io_timeout(io_timeout);
1483
1484         if (verbose && !stdout_format) {
1485                 stdout_format = "%n%L";
1486                 log_before_transfer = !am_server;
1487         }
1488         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1489                 stdout_format_has_o_or_i = 1;
1490
1491         if (logfile_name && !am_daemon) {
1492                 if (!logfile_format) {
1493                         logfile_format = "%i %n%L";
1494                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1495                 } else {
1496                         if (log_format_has(logfile_format, 'i'))
1497                                 logfile_format_has_i = 1;
1498                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1499                                 logfile_format_has_o_or_i = 1;
1500                 }
1501                 log_init(0);
1502         } else if (!am_daemon)
1503                 logfile_format = NULL;
1504
1505         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1506                 bwlimit = daemon_bwlimit;
1507         if (bwlimit) {
1508                 bwlimit_writemax = (size_t)bwlimit * 128;
1509                 if (bwlimit_writemax < 512)
1510                         bwlimit_writemax = 512;
1511         }
1512
1513         if (sparse_files && inplace) {
1514                 /* Note: we don't check for this below, because --append is
1515                  * OK with --sparse (as long as redos are handled right). */
1516                 snprintf(err_buf, sizeof err_buf,
1517                          "--sparse cannot be used with --inplace\n");
1518                 return 0;
1519         }
1520
1521         if (append_mode) {
1522                 if (whole_file > 0) {
1523                         snprintf(err_buf, sizeof err_buf,
1524                                  "--append cannot be used with --whole-file\n");
1525                         return 0;
1526                 }
1527                 if (refused_inplace) {
1528                         create_refuse_error(refused_inplace);
1529                         return 0;
1530                 }
1531                 inplace = 1;
1532         }
1533
1534         if (delay_updates && !partial_dir)
1535                 partial_dir = tmp_partialdir;
1536
1537         if (inplace) {
1538 #ifdef HAVE_FTRUNCATE
1539                 if (partial_dir) {
1540                         snprintf(err_buf, sizeof err_buf,
1541                                  "--%s cannot be used with --%s\n",
1542                                  append_mode ? "append" : "inplace",
1543                                  delay_updates ? "delay-updates" : "partial-dir");
1544                         return 0;
1545                 }
1546                 /* --inplace implies --partial for refusal purposes, but we
1547                  * clear the keep_partial flag for internal logic purposes. */
1548                 if (refused_partial) {
1549                         create_refuse_error(refused_partial);
1550                         return 0;
1551                 }
1552                 keep_partial = 0;
1553 #else
1554                 snprintf(err_buf, sizeof err_buf,
1555                          "--%s is not supported on this %s\n",
1556                          append_mode ? "append" : "inplace",
1557                          am_server ? "server" : "client");
1558                 return 0;
1559 #endif
1560         } else {
1561                 if (keep_partial && !partial_dir && !am_server) {
1562                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1563                                 partial_dir = strdup(arg);
1564                 }
1565                 if (partial_dir) {
1566                         if (*partial_dir)
1567                                 clean_fname(partial_dir, 1);
1568                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1569                                 partial_dir = NULL;
1570                         if (!partial_dir && refused_partial) {
1571                                 create_refuse_error(refused_partial);
1572                                 return 0;
1573                         }
1574                         keep_partial = 1;
1575                 }
1576         }
1577
1578         if (files_from) {
1579                 char *h, *p;
1580                 int q;
1581                 if (argc > 2 || (!am_daemon && argc == 1)) {
1582                         usage(FERROR);
1583                         exit_cleanup(RERR_SYNTAX);
1584                 }
1585                 if (strcmp(files_from, "-") == 0) {
1586                         filesfrom_fd = 0;
1587                         if (am_server)
1588                                 filesfrom_host = ""; /* reading from socket */
1589                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1590                         if (am_server) {
1591                                 snprintf(err_buf, sizeof err_buf,
1592                                         "The --files-from sent to the server cannot specify a host.\n");
1593                                 return 0;
1594                         }
1595                         files_from = p;
1596                         filesfrom_host = h;
1597                         if (strcmp(files_from, "-") == 0) {
1598                                 snprintf(err_buf, sizeof err_buf,
1599                                         "Invalid --files-from remote filename\n");
1600                                 return 0;
1601                         }
1602                 } else {
1603                         if (sanitize_paths)
1604                                 files_from = sanitize_path(NULL, files_from, NULL, 0, NULL);
1605                         if (server_filter_list.head) {
1606                                 if (!*files_from)
1607                                         goto options_rejected;
1608                                 clean_fname(files_from, 1);
1609                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1610                                         goto options_rejected;
1611                         }
1612                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1613                         if (filesfrom_fd < 0) {
1614                                 snprintf(err_buf, sizeof err_buf,
1615                                         "failed to open files-from file %s: %s\n",
1616                                         files_from, strerror(errno));
1617                                 return 0;
1618                         }
1619                 }
1620         }
1621
1622         am_starting_up = 0;
1623
1624         return 1;
1625
1626   options_rejected:
1627         snprintf(err_buf, sizeof err_buf,
1628                 "Your options have been rejected by the server.\n");
1629         return 0;
1630 }
1631
1632
1633 /**
1634  * Construct a filtered list of options to pass through from the
1635  * client to the server.
1636  *
1637  * This involves setting options that will tell the server how to
1638  * behave, and also filtering out options that are processed only
1639  * locally.
1640  **/
1641 void server_options(char **args, int *argc_p)
1642 {
1643         static char argstr[64];
1644         int ac = *argc_p;
1645         char *arg;
1646
1647         int i, x;
1648
1649         if (blocking_io == -1)
1650                 blocking_io = 0;
1651
1652         /* This should always remain first on the server's command-line. */
1653         args[ac++] = "--server";
1654
1655         if (daemon_over_rsh > 0) {
1656                 args[ac++] = "--daemon";
1657                 *argc_p = ac;
1658                 /* if we're passing --daemon, we're done */
1659                 return;
1660         }
1661
1662         if (!am_sender)
1663                 args[ac++] = "--sender";
1664
1665         x = 1;
1666         argstr[0] = '-';
1667
1668         if (protect_args)
1669                 argstr[x++] = 's';
1670
1671         for (i = 0; i < verbose; i++)
1672                 argstr[x++] = 'v';
1673
1674         /* the -q option is intentionally left out */
1675         if (make_backups)
1676                 argstr[x++] = 'b';
1677         if (update_only)
1678                 argstr[x++] = 'u';
1679         if (!do_xfers) /* Note: NOT "dry_run"! */
1680                 argstr[x++] = 'n';
1681         if (preserve_links)
1682                 argstr[x++] = 'l';
1683         if (xfer_dirs > (recurse || !delete_mode || !am_sender ? 1 : 0))
1684                 argstr[x++] = 'd';
1685         if (am_sender) {
1686                 if (keep_dirlinks)
1687                         argstr[x++] = 'K';
1688                 if (prune_empty_dirs)
1689                         argstr[x++] = 'm';
1690                 if (omit_dir_times)
1691                         argstr[x++] = 'O';
1692         } else {
1693                 if (copy_links)
1694                         argstr[x++] = 'L';
1695                 if (copy_dirlinks)
1696                         argstr[x++] = 'k';
1697         }
1698
1699         if (whole_file > 0)
1700                 argstr[x++] = 'W';
1701         /* We don't need to send --no-whole-file, because it's the
1702          * default for remote transfers, and in any case old versions
1703          * of rsync will not understand it. */
1704
1705         if (preserve_hard_links) {
1706                 argstr[x++] = 'H';
1707                 if (preserve_hard_links > 1)
1708                         argstr[x++] = 'H';
1709         }
1710         if (preserve_uid)
1711                 argstr[x++] = 'o';
1712         if (preserve_gid)
1713                 argstr[x++] = 'g';
1714         if (preserve_devices) /* ignore preserve_specials here */
1715                 argstr[x++] = 'D';
1716         if (preserve_times)
1717                 argstr[x++] = 't';
1718         if (preserve_perms)
1719                 argstr[x++] = 'p';
1720         else if (preserve_executability && am_sender)
1721                 argstr[x++] = 'E';
1722 #ifdef SUPPORT_ACLS
1723         if (preserve_acls)
1724                 argstr[x++] = 'A';
1725 #endif
1726 #ifdef SUPPORT_XATTRS
1727         if (preserve_xattrs) {
1728                 argstr[x++] = 'X';
1729                 if (preserve_xattrs > 1)
1730                         argstr[x++] = 'X';
1731         }
1732 #endif
1733         if (recurse)
1734                 argstr[x++] = 'r';
1735         if (always_checksum)
1736                 argstr[x++] = 'c';
1737         if (cvs_exclude)
1738                 argstr[x++] = 'C';
1739         if (ignore_times)
1740                 argstr[x++] = 'I';
1741         if (relative_paths)
1742                 argstr[x++] = 'R';
1743         if (one_file_system) {
1744                 argstr[x++] = 'x';
1745                 if (one_file_system > 1)
1746                         argstr[x++] = 'x';
1747         }
1748         if (sparse_files)
1749                 argstr[x++] = 'S';
1750         if (do_compression)
1751                 argstr[x++] = 'z';
1752
1753         /* This is a complete hack - blame Rusty.  FIXME!
1754          * This hack is only needed for older rsync versions that
1755          * don't understand the --list-only option. */
1756         if (list_only == 1 && !recurse)
1757                 argstr[x++] = 'r';
1758
1759 #if SUBPROTOCOL_VERSION != 0
1760         /* If we're speaking a pre-release version of a protocol, we tell
1761          * the server about this by (ab)using the -e option. */
1762         if (protocol_version == PROTOCOL_VERSION) {
1763                 x += snprintf(argstr+x, sizeof argstr - x,
1764                               "e%d.%d", PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
1765         }
1766 #endif
1767
1768         argstr[x] = '\0';
1769
1770         if (x != 1)
1771                 args[ac++] = argstr;
1772
1773 #ifdef ICONV_OPTION
1774         if (iconv_opt) {
1775                 char *set = strchr(iconv_opt, ',');
1776                 if (set)
1777                         set++;
1778                 else
1779                         set = iconv_opt;
1780                 if (asprintf(&arg, "--iconv=%s", set) < 0)
1781                         goto oom;
1782                 args[ac++] = arg;
1783         }
1784 #endif
1785
1786         if (protect_args) /* initial args break here */
1787                 args[ac++] = NULL;
1788
1789         if (list_only > 1)
1790                 args[ac++] = "--list-only";
1791
1792         /* This makes sure that the remote rsync can handle deleting with -d
1793          * sans -r because the --no-r option was added at the same time. */
1794         if (xfer_dirs && !recurse && delete_mode && am_sender)
1795                 args[ac++] = "--no-r";
1796
1797         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1798                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1799                         goto oom;
1800                 args[ac++] = arg;
1801         }
1802
1803         if (preserve_devices) {
1804                 /* Note: sending "--devices" would not be backward-compatible. */
1805                 if (!preserve_specials)
1806                         args[ac++] = "--no-specials"; /* -D is already set. */
1807         } else if (preserve_specials)
1808                 args[ac++] = "--specials";
1809
1810         /* The server side doesn't use our log-format, but in certain
1811          * circumstances they need to know a little about the option. */
1812         if (stdout_format && am_sender) {
1813                 /* Use --log-format, not --out-format, for compatibility. */
1814                 if (stdout_format_has_i > 1)
1815                         args[ac++] = "--log-format=%i%I";
1816                 else if (stdout_format_has_i)
1817                         args[ac++] = "--log-format=%i";
1818                 else if (stdout_format_has_o_or_i)
1819                         args[ac++] = "--log-format=%o";
1820                 else if (!verbose)
1821                         args[ac++] = "--log-format=X";
1822         }
1823
1824         if (block_size) {
1825                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1826                         goto oom;
1827                 args[ac++] = arg;
1828         }
1829
1830         if (io_timeout) {
1831                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1832                         goto oom;
1833                 args[ac++] = arg;
1834         }
1835
1836         if (bwlimit) {
1837                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1838                         goto oom;
1839                 args[ac++] = arg;
1840         }
1841
1842         if (backup_dir) {
1843                 args[ac++] = "--backup-dir";
1844                 args[ac++] = backup_dir;
1845         }
1846
1847         /* Only send --suffix if it specifies a non-default value. */
1848         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1849                 /* We use the following syntax to avoid weirdness with '~'. */
1850                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1851                         goto oom;
1852                 args[ac++] = arg;
1853         }
1854
1855         if (am_sender) {
1856                 if (max_delete > 0) {
1857                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1858                                 goto oom;
1859                         args[ac++] = arg;
1860                 } else if (max_delete == 0)
1861                         args[ac++] = "--max-delete=-1";
1862                 if (min_size) {
1863                         args[ac++] = "--min-size";
1864                         args[ac++] = min_size_arg;
1865                 }
1866                 if (max_size) {
1867                         args[ac++] = "--max-size";
1868                         args[ac++] = max_size_arg;
1869                 }
1870                 if (delete_before)
1871                         args[ac++] = "--delete-before";
1872                 else if (delete_during == 2)
1873                         args[ac++] = "--delete-delay";
1874                 else if (delete_during)
1875                         args[ac++] = "--delete-during";
1876                 else if (delete_after)
1877                         args[ac++] = "--delete-after";
1878                 else if (delete_mode && !delete_excluded)
1879                         args[ac++] = "--delete";
1880                 if (delete_excluded)
1881                         args[ac++] = "--delete-excluded";
1882                 if (force_delete)
1883                         args[ac++] = "--force";
1884                 if (write_batch < 0)
1885                         args[ac++] = "--only-write-batch=X";
1886                 if (am_root > 1)
1887                         args[ac++] = "--super";
1888                 if (size_only)
1889                         args[ac++] = "--size-only";
1890         } else {
1891                 if (skip_compress) {
1892                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
1893                                 goto oom;
1894                         args[ac++] = arg;
1895                 }
1896         }
1897
1898         if (modify_window_set) {
1899                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1900                         goto oom;
1901                 args[ac++] = arg;
1902         }
1903
1904         if (checksum_seed) {
1905                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1906                         goto oom;
1907                 args[ac++] = arg;
1908         }
1909
1910         if (partial_dir && am_sender) {
1911                 if (partial_dir != tmp_partialdir) {
1912                         args[ac++] = "--partial-dir";
1913                         args[ac++] = partial_dir;
1914                 }
1915                 if (delay_updates)
1916                         args[ac++] = "--delay-updates";
1917         } else if (keep_partial && am_sender)
1918                 args[ac++] = "--partial";
1919
1920         if (ignore_errors)
1921                 args[ac++] = "--ignore-errors";
1922
1923         if (copy_unsafe_links)
1924                 args[ac++] = "--copy-unsafe-links";
1925
1926         if (safe_symlinks)
1927                 args[ac++] = "--safe-links";
1928
1929         if (numeric_ids)
1930                 args[ac++] = "--numeric-ids";
1931
1932         if (!allow_inc_recurse)
1933                 args[ac++] = "--no-i-r";
1934
1935         if (am_sender) {
1936                 if (ignore_existing)
1937                         args[ac++] = "--ignore-existing";
1938
1939                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
1940                 if (ignore_non_existing)
1941                         args[ac++] = "--existing";
1942
1943                 if (tmpdir) {
1944                         args[ac++] = "--temp-dir";
1945                         args[ac++] = tmpdir;
1946                 }
1947
1948                 if (basis_dir[0]) {
1949                         /* the server only needs this option if it is not the sender,
1950                          *   and it may be an older version that doesn't know this
1951                          *   option, so don't send it if client is the sender.
1952                          */
1953                         int i;
1954                         for (i = 0; i < basis_dir_cnt; i++) {
1955                                 args[ac++] = dest_option;
1956                                 args[ac++] = basis_dir[i];
1957                         }
1958                 }
1959         }
1960
1961         if (append_mode) {
1962                 if (append_mode > 1)
1963                         args[ac++] = "--append";
1964                 args[ac++] = "--append";
1965         } else if (inplace)
1966                 args[ac++] = "--inplace";
1967
1968         if (files_from && (!am_sender || filesfrom_host)) {
1969                 if (filesfrom_host) {
1970                         args[ac++] = "--files-from";
1971                         args[ac++] = files_from;
1972                         if (eol_nulls)
1973                                 args[ac++] = "--from0";
1974                 } else {
1975                         args[ac++] = "--files-from=-";
1976                         args[ac++] = "--from0";
1977                 }
1978                 if (!relative_paths)
1979                         args[ac++] = "--no-relative";
1980         }
1981         if (relative_paths && !implied_dirs && !am_sender)
1982                 args[ac++] = "--no-implied-dirs";
1983
1984         if (fuzzy_basis && am_sender)
1985                 args[ac++] = "--fuzzy";
1986
1987         if (remove_source_files == 1)
1988                 args[ac++] = "--remove-source-files";
1989         else if (remove_source_files)
1990                 args[ac++] = "--remove-sent-files";
1991
1992         *argc_p = ac;
1993         return;
1994
1995     oom:
1996         out_of_memory("server_options");
1997 }
1998
1999 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2000  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2001  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2002  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2003  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2004  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2005  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2006 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2007 {
2008         char *p;
2009         int not_host;
2010         int hostlen;
2011
2012         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2013                 char *path;
2014                 s += strlen(URL_PREFIX);
2015                 if ((p = strchr(s, '/')) != NULL) {
2016                         hostlen = p - s;
2017                         path = p + 1;
2018                 } else {
2019                         hostlen = strlen(s);
2020                         path = "";
2021                 }
2022                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2023                         s++;
2024                         hostlen = p - s;
2025                         if (p[1] == ':')
2026                                 *port_ptr = atoi(p+2);
2027                 } else {
2028                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2029                                 hostlen = p - s;
2030                                 *port_ptr = atoi(p+1);
2031                         }
2032                 }
2033                 if (!*port_ptr)
2034                         *port_ptr = RSYNC_PORT;
2035                 *host_ptr = new_array(char, hostlen + 1);
2036                 strlcpy(*host_ptr, s, hostlen + 1);
2037                 return path;
2038         }
2039
2040         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2041                 s++;
2042                 hostlen = p - s;
2043                 *p = '\0';
2044                 not_host = strchr(s, '/') || !strchr(s, ':');
2045                 *p = ']';
2046                 if (not_host)
2047                         return NULL;
2048                 p++;
2049         } else {
2050                 if (!(p = strchr(s, ':')))
2051                         return NULL;
2052                 hostlen = p - s;
2053                 *p = '\0';
2054                 not_host = strchr(s, '/') != NULL;
2055                 *p = ':';
2056                 if (not_host)
2057                         return NULL;
2058         }
2059
2060         *host_ptr = new_array(char, hostlen + 1);
2061         strlcpy(*host_ptr, s, hostlen + 1);
2062
2063         if (p[1] == ':') {
2064                 if (port_ptr && !*port_ptr)
2065                         *port_ptr = RSYNC_PORT;
2066                 return p + 2;
2067         }
2068         if (port_ptr)
2069                 *port_ptr = 0;
2070
2071         return p + 1;
2072 }