If the user specifies --protocol=29, rsync will avoid sending an -e
[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) 2002-2008 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 local_server;
29 extern int sanitize_paths;
30 extern int daemon_over_rsh;
31 extern unsigned int module_dirlen;
32 extern struct filter_list_struct filter_list;
33 extern struct filter_list_struct daemon_filter_list;
34
35 int make_backups = 0;
36
37 /**
38  * If 1, send the whole file as literal data rather than trying to
39  * create an incremental diff.
40  *
41  * If -1, then look at whether we're local or remote and go by that.
42  *
43  * @sa disable_deltas_p()
44  **/
45 int whole_file = -1;
46
47 int append_mode = 0;
48 int keep_dirlinks = 0;
49 int copy_dirlinks = 0;
50 int copy_links = 0;
51 int preserve_links = 0;
52 int preserve_hard_links = 0;
53 int preserve_acls = 0;
54 int preserve_xattrs = 0;
55 int preserve_perms = 0;
56 int preserve_executability = 0;
57 int preserve_devices = 0;
58 int preserve_specials = 0;
59 int preserve_uid = 0;
60 int preserve_gid = 0;
61 int preserve_times = 0;
62 int update_only = 0;
63 int cvs_exclude = 0;
64 int dry_run = 0;
65 int do_xfers = 1;
66 int ignore_times = 0;
67 int delete_mode = 0;
68 int delete_during = 0;
69 int delete_before = 0;
70 int delete_after = 0;
71 int delete_excluded = 0;
72 int remove_source_files = 0;
73 int one_file_system = 0;
74 int protocol_version = PROTOCOL_VERSION;
75 int sparse_files = 0;
76 int do_compression = 0;
77 int def_compress_level = Z_DEFAULT_COMPRESSION;
78 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
79 int am_server = 0;
80 int am_sender = 0;
81 int am_generator = 0;
82 int am_starting_up = 1;
83 int relative_paths = -1;
84 int implied_dirs = 1;
85 int numeric_ids = 0;
86 int allow_8bit_chars = 0;
87 int force_delete = 0;
88 int io_timeout = 0;
89 int allowed_lull = 0;
90 int prune_empty_dirs = 0;
91 int use_qsort = 0;
92 char *files_from = NULL;
93 int filesfrom_fd = -1;
94 char *filesfrom_host = NULL;
95 int eol_nulls = 0;
96 int protect_args = 0;
97 int human_readable = 0;
98 int recurse = 0;
99 int allow_inc_recurse = 1;
100 int xfer_dirs = -1;
101 int am_daemon = 0;
102 int do_stats = 0;
103 int do_progress = 0;
104 int connect_timeout = 0;
105 int keep_partial = 0;
106 int safe_symlinks = 0;
107 int copy_unsafe_links = 0;
108 int size_only = 0;
109 int daemon_bwlimit = 0;
110 int bwlimit = 0;
111 int fuzzy_basis = 0;
112 size_t bwlimit_writemax = 0;
113 int ignore_existing = 0;
114 int ignore_non_existing = 0;
115 int need_messages_from_generator = 0;
116 int max_delete = INT_MIN;
117 OFF_T max_size = 0;
118 OFF_T min_size = 0;
119 int ignore_errors = 0;
120 int modify_window = 0;
121 int blocking_io = -1;
122 int checksum_seed = 0;
123 int inplace = 0;
124 int delay_updates = 0;
125 long block_size = 0; /* "long" because popt can't set an int32. */
126 char *skip_compress = NULL;
127
128 /** Network address family. **/
129 int default_af_hint
130 #ifdef INET6
131         = 0;            /* Any protocol */
132 #else
133         = AF_INET;      /* Must use IPv4 */
134 # ifdef AF_INET6
135 #  undef AF_INET6
136 # endif
137 # define AF_INET6 AF_INET /* make -6 option a no-op */
138 #endif
139
140 /** Do not go into the background when run as --daemon.  Good
141  * for debugging and required for running as a service on W32,
142  * or under Unix process-monitors. **/
143 int no_detach
144 #if defined _WIN32 || defined __WIN32__
145         = 1;
146 #else
147         = 0;
148 #endif
149
150 int write_batch = 0;
151 int read_batch = 0;
152 int backup_dir_len = 0;
153 int backup_suffix_len;
154 unsigned int backup_dir_remainder;
155
156 char *backup_suffix = NULL;
157 char *tmpdir = NULL;
158 char *partial_dir = NULL;
159 char *basis_dir[MAX_BASIS_DIRS+1];
160 char *config_file = NULL;
161 char *shell_cmd = NULL;
162 char *logfile_name = NULL;
163 char *logfile_format = NULL;
164 char *stdout_format = NULL;
165 char *password_file = NULL;
166 char *rsync_path = RSYNC_PATH;
167 char *backup_dir = NULL;
168 char backup_dir_buf[MAXPATHLEN];
169 char *sockopts = NULL;
170 int rsync_port = 0;
171 int compare_dest = 0;
172 int copy_dest = 0;
173 int link_dest = 0;
174 int basis_dir_cnt = 0;
175 char *dest_option = NULL;
176
177 static int remote_option_alloc = 0;
178 int remote_option_cnt = 0;
179 const char **remote_options = NULL;
180
181 int verbose = 0;
182 int quiet = 0;
183 int output_motd = 1;
184 int log_before_transfer = 0;
185 int stdout_format_has_i = 0;
186 int stdout_format_has_o_or_i = 0;
187 int logfile_format_has_i = 0;
188 int logfile_format_has_o_or_i = 0;
189 int always_checksum = 0;
190 int list_only = 0;
191
192 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
193 char *batch_name = NULL;
194
195 int need_unsorted_flist = 0;
196 #ifdef ICONV_OPTION
197 char *iconv_opt = ICONV_OPTION;
198 #endif
199
200 struct chmod_mode_struct *chmod_modes = NULL;
201
202 static int daemon_opt;   /* sets am_daemon after option error-reporting */
203 static int omit_dir_times = 0;
204 static int F_option_cnt = 0;
205 static int modify_window_set;
206 static int itemize_changes = 0;
207 static int refused_delete, refused_archive_part, refused_compress;
208 static int refused_partial, refused_progress, refused_delete_before;
209 static int refused_delete_during;
210 static int refused_inplace, refused_no_iconv;
211 static char *max_size_arg, *min_size_arg;
212 static char tmp_partialdir[] = ".~tmp~";
213
214 /** Local address to bind.  As a character string because it's
215  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
216  * address, or a hostname. **/
217 char *bind_address;
218
219
220 static void print_rsync_version(enum logcode f)
221 {
222         char *subprotocol = "";
223         char const *got_socketpair = "no ";
224         char const *have_inplace = "no ";
225         char const *hardlinks = "no ";
226         char const *symtimes = "no ";
227         char const *acls = "no ";
228         char const *xattrs = "no ";
229         char const *links = "no ";
230         char const *iconv = "no ";
231         char const *ipv6 = "no ";
232         STRUCT_STAT *dumstat;
233
234 #if SUBPROTOCOL_VERSION != 0
235         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
236 #endif
237 #ifdef HAVE_SOCKETPAIR
238         got_socketpair = "";
239 #endif
240 #ifdef HAVE_FTRUNCATE
241         have_inplace = "";
242 #endif
243 #ifdef SUPPORT_HARD_LINKS
244         hardlinks = "";
245 #endif
246 #ifdef SUPPORT_ACLS
247         acls = "";
248 #endif
249 #ifdef SUPPORT_XATTRS
250         xattrs = "";
251 #endif
252 #ifdef SUPPORT_LINKS
253         links = "";
254 #endif
255 #ifdef INET6
256         ipv6 = "";
257 #endif
258 #ifdef ICONV_OPTION
259         iconv = "";
260 #endif
261 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
262         symtimes = "";
263 #endif
264
265         rprintf(f, "%s  version %s  protocol version %d%s\n",
266                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
267         rprintf(f, "Copyright (C) 1996-2008 by Andrew Tridgell, Wayne Davison, and others.\n");
268         rprintf(f, "Web site: http://rsync.samba.org/\n");
269         rprintf(f, "Capabilities:\n");
270         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
271                 (int)(sizeof (OFF_T) * 8),
272                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
273                 (int)(sizeof (time_t) * 8),
274                 (int)(sizeof (int64) * 8));
275         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
276                 got_socketpair, hardlinks, links, ipv6, have_inplace);
277         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
278                 have_inplace, acls, xattrs, iconv, symtimes);
279
280 #ifdef MAINTAINER_MODE
281         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
282 #endif
283
284 #if SIZEOF_INT64 < 8
285         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
286 #endif
287         if (sizeof (int64) != SIZEOF_INT64) {
288                 rprintf(f,
289                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
290                         (int) SIZEOF_INT64, (int) sizeof (int64));
291         }
292
293         rprintf(f,"\n");
294         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
295         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
296         rprintf(f,"General Public Licence for details.\n");
297 }
298
299
300 void usage(enum logcode F)
301 {
302   print_rsync_version(F);
303
304   rprintf(F,"\n");
305   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
306   rprintf(F,"via a fast differencing algorithm.\n");
307
308   rprintf(F,"\n");
309   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
310   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
311   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
312   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
313   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
314   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
315   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
316   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
317   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
318   rprintf(F,"\n");
319   rprintf(F,"Options\n");
320   rprintf(F," -v, --verbose               increase verbosity\n");
321   rprintf(F," -q, --quiet                 suppress non-error messages\n");
322   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
323   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
324   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
325   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
326   rprintf(F," -r, --recursive             recurse into directories\n");
327   rprintf(F," -R, --relative              use relative path names\n");
328   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
329   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
330   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
331   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
332   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
333   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
334   rprintf(F,"     --append                append data onto shorter files\n");
335   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
336   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
337   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
338   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
339   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
340   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
341   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
342   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
343   rprintf(F," -H, --hard-links            preserve hard links\n");
344   rprintf(F," -p, --perms                 preserve permissions\n");
345   rprintf(F," -E, --executability         preserve the file's executability\n");
346   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
347 #ifdef SUPPORT_ACLS
348   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
349 #endif
350 #ifdef SUPPORT_XATTRS
351   rprintf(F," -X, --xattrs                preserve extended attributes\n");
352 #endif
353   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
354   rprintf(F," -g, --group                 preserve group\n");
355   rprintf(F,"     --devices               preserve device files (super-user only)\n");
356   rprintf(F,"     --specials              preserve special files\n");
357   rprintf(F," -D                          same as --devices --specials\n");
358   rprintf(F," -t, --times                 preserve modification times\n");
359   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
360   rprintf(F,"     --super                 receiver attempts super-user activities\n");
361 #ifdef SUPPORT_XATTRS
362   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
363 #endif
364   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
365   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
366   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
367   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
368   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
369   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
370   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
371   rprintf(F,"     --existing              skip creating new files on receiver\n");
372   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
373   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
374   rprintf(F,"     --del                   an alias for --delete-during\n");
375   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
376   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
377   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
378   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
379   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
380   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
381   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
382   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
383   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
384   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
385   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
386   rprintf(F,"     --partial               keep partially transferred files\n");
387   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
388   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
389   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
390   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
391   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
392   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
393   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
394   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
395   rprintf(F,"     --size-only             skip files that match in size\n");
396   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
397   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
398   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
399   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
400   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
401   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
402   rprintf(F," -z, --compress              compress file data during the transfer\n");
403   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
404   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
405   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
406   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
407   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
408   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
409   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
410   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
411   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
412   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
413   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
414   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
415   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
416   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
417   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
418   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
419   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
420   rprintf(F,"     --stats                 give some file-transfer stats\n");
421   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
422   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
423   rprintf(F,"     --progress              show progress during transfer\n");
424   rprintf(F," -P                          same as --partial --progress\n");
425   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
426   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
427   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
428   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
429   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
430   rprintf(F,"     --list-only             list the files instead of copying them\n");
431   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
432   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
433   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
434   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
435   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
436 #ifdef ICONV_OPTION
437   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
438 #endif
439   rprintf(F," -4, --ipv4                  prefer IPv4\n");
440   rprintf(F," -6, --ipv6                  prefer IPv6\n");
441   rprintf(F,"     --version               print version number\n");
442   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
443
444   rprintf(F,"\n");
445   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
446   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
447   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
448 }
449
450 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
451       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
452       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
453       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
454       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV,
455       OPT_SERVER, OPT_REFUSED_BASE = 9000};
456
457 static struct poptOption long_options[] = {
458   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
459   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
460   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
461   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
462   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
463   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
464   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
465   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
466   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
467   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
468   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
469   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
470   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
471   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
472   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
473   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
474   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
475   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
476   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
477   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
478   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
479   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
480   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
481   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
482   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
483   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
484   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
485   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
486   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
487   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
488   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
489   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
490   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
491   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
492   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
493   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
494   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
495   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
496   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
497   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
498   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
499   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
500   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
501   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
502   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
503   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
504   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
505   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
506   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
507   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
508   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
509   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
510   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
511   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
512   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
513   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
514   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
515   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
516   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
517   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
518   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
519   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
520   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
521   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
522   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
523   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
524   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
525   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
526   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
527   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
528   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
529   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
530   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
531   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
532   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
533   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
534   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
535   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
536   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
537   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
538   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
539   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
540   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
541   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
542   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
543   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
544   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
545   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
546   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
547   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
548   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
549   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
550   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
551   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
552   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
553   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
554   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
555   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
556   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
557   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
558   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
559   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
560   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
561   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
562   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
563   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
564   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
565   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
566   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
567   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
568   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
569   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
570   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
571   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
572   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
573   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
574   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
575   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
576   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
577   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
578   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
579   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
580   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
581   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
582   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
583   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
584   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
585   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
586   {"fuzzy",           'y', POPT_ARG_VAL,    &fuzzy_basis, 1, 0, 0 },
587   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
588   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
589   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
590   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
591   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
592   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
593   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
594   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
595   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
596   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
597   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
598   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
599   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
600   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
601   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
602   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
603   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
604   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
605   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
606   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
607   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
608   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
609   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
610   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
611   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
612   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
613   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
614   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
615   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
616   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
617   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
618   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
619   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
620   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
621   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
622   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
623   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
624   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
625   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
626   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
627   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
628   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
629   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
630   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
631   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
632   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
633   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
634   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
635   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
636   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
637 #ifdef ICONV_OPTION
638   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
639   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
640 #endif
641   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
642   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
643   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
644   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
645   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
646   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
647   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
648   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
649   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
650   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
651   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
652   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
653   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
654   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
655   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
656   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
657   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
658   /* All the following options switch us into daemon-mode option-parsing. */
659   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
660   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
661   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
662   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
663   {0,0,0,0, 0, 0, 0}
664 };
665
666 static void daemon_usage(enum logcode F)
667 {
668   print_rsync_version(F);
669
670   rprintf(F,"\n");
671   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
672   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
673   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
674   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
675   rprintf(F,"     --no-detach             do not detach from the parent\n");
676   rprintf(F,"     --port=PORT             listen on alternate port number\n");
677   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
678   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
679   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
680   rprintf(F," -v, --verbose               increase verbosity\n");
681   rprintf(F," -4, --ipv4                  prefer IPv4\n");
682   rprintf(F," -6, --ipv6                  prefer IPv6\n");
683   rprintf(F,"     --help                  show this help screen\n");
684
685   rprintf(F,"\n");
686   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
687   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
688 }
689
690 static struct poptOption long_daemon_options[] = {
691   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
692   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
693   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
694   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
695   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
696   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
697   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
698   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
699   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
700   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
701   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
702   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
703   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
704   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
705   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
706   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
707   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
708   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
709   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
710   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
711   {0,0,0,0, 0, 0, 0}
712 };
713
714
715 static char err_buf[200];
716
717
718 /**
719  * Store the option error message, if any, so that we can log the
720  * connection attempt (which requires parsing the options), and then
721  * show the error later on.
722  **/
723 void option_error(void)
724 {
725         if (!err_buf[0]) {
726                 strlcpy(err_buf, "Error parsing options: option may "
727                         "be supported on client but not on server?\n",
728                         sizeof err_buf);
729         }
730
731         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
732         msleep(20);
733 }
734
735
736 /**
737  * Tweak the option table to disable all options that the rsyncd.conf
738  * file has told us to refuse.
739  **/
740 static void set_refuse_options(char *bp)
741 {
742         struct poptOption *op;
743         char *cp, shortname[2];
744         int is_wild, found_match;
745
746         shortname[1] = '\0';
747
748         while (1) {
749                 while (*bp == ' ') bp++;
750                 if (!*bp)
751                         break;
752                 if ((cp = strchr(bp, ' ')) != NULL)
753                         *cp= '\0';
754                 is_wild = strpbrk(bp, "*?[") != NULL;
755                 found_match = 0;
756                 for (op = long_options; ; op++) {
757                         *shortname = op->shortName;
758                         if (!op->longName && !*shortname)
759                                 break;
760                         if ((op->longName && wildmatch(bp, op->longName))
761                             || (*shortname && wildmatch(bp, shortname))) {
762                                 if (op->argInfo == POPT_ARG_VAL)
763                                         op->argInfo = POPT_ARG_NONE;
764                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
765                                 found_match = 1;
766                                 /* These flags are set to let us easily check
767                                  * an implied option later in the code. */
768                                 switch (*shortname) {
769                                 case 'r': case 'd': case 'l': case 'p':
770                                 case 't': case 'g': case 'o': case 'D':
771                                         refused_archive_part = op->val;
772                                         break;
773                                 case 'z':
774                                         refused_compress = op->val;
775                                         break;
776                                 case '\0':
777                                         if (wildmatch("delete", op->longName))
778                                                 refused_delete = op->val;
779                                         else if (wildmatch("delete-before", op->longName))
780                                                 refused_delete_before = op->val;
781                                         else if (wildmatch("delete-during", op->longName))
782                                                 refused_delete_during = op->val;
783                                         else if (wildmatch("partial", op->longName))
784                                                 refused_partial = op->val;
785                                         else if (wildmatch("progress", op->longName))
786                                                 refused_progress = op->val;
787                                         else if (wildmatch("inplace", op->longName))
788                                                 refused_inplace = op->val;
789                                         else if (wildmatch("no-iconv", op->longName))
790                                                 refused_no_iconv = op->val;
791                                         break;
792                                 }
793                                 if (!is_wild)
794                                         break;
795                         }
796                 }
797                 if (!found_match) {
798                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
799                                 bp);
800                 }
801                 if (!cp)
802                         break;
803                 *cp = ' ';
804                 bp = cp + 1;
805         }
806 }
807
808
809 static int count_args(const char **argv)
810 {
811         int i = 0;
812
813         if (argv) {
814                 while (argv[i] != NULL)
815                         i++;
816         }
817
818         return i;
819 }
820
821
822 static OFF_T parse_size_arg(char **size_arg, char def_suf)
823 {
824         int reps, mult, make_compatible = 0;
825         const char *arg;
826         OFF_T size = 1;
827
828         for (arg = *size_arg; isDigit(arg); arg++) {}
829         if (*arg == '.')
830                 for (arg++; isDigit(arg); arg++) {}
831         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
832         case 'b': case 'B':
833                 reps = 0;
834                 break;
835         case 'k': case 'K':
836                 reps = 1;
837                 break;
838         case 'm': case 'M':
839                 reps = 2;
840                 break;
841         case 'g': case 'G':
842                 reps = 3;
843                 break;
844         default:
845                 return -1;
846         }
847         if (*arg == 'b' || *arg == 'B')
848                 mult = 1000, make_compatible = 1, arg++;
849         else if (!*arg || *arg == '+' || *arg == '-')
850                 mult = 1024;
851         else if (strncasecmp(arg, "ib", 2) == 0)
852                 mult = 1024, arg += 2;
853         else
854                 return -1;
855         while (reps--)
856                 size *= mult;
857         size *= atof(*size_arg);
858         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
859                 size += atoi(arg), make_compatible = 1, arg += 2;
860         if (*arg)
861                 return -1;
862         if (size > 0 && make_compatible) {
863                 /* We convert this manually because we may need %lld precision,
864                  * and that's not a portable sprintf() escape. */
865                 char buf[128], *s = buf + sizeof buf - 1;
866                 OFF_T num = size;
867                 *s = '\0';
868                 while (num) {
869                         *--s = (char)(num % 10) + '0';
870                         num /= 10;
871                 }
872                 if (!(*size_arg = strdup(s)))
873                         out_of_memory("parse_size_arg");
874         }
875         return size;
876 }
877
878
879 static void create_refuse_error(int which)
880 {
881         /* The "which" value is the index + OPT_REFUSED_BASE. */
882         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
883         int n = snprintf(err_buf, sizeof err_buf,
884                          "The server is configured to refuse --%s\n",
885                          op->longName) - 1;
886         if (op->shortName) {
887                 snprintf(err_buf + n, sizeof err_buf - n,
888                          " (-%c)\n", op->shortName);
889         }
890 }
891
892
893 /**
894  * Process command line arguments.  Called on both local and remote.
895  *
896  * @retval 1 if all options are OK; with globals set to appropriate
897  * values
898  *
899  * @retval 0 on error, with err_buf containing an explanation
900  **/
901 int parse_arguments(int *argc_p, const char ***argv_p)
902 {
903         static poptContext pc;
904         char *ref = lp_refuse_options(module_id);
905         const char *arg, **argv = *argv_p;
906         int argc = *argc_p;
907         int opt;
908
909         if (ref && *ref)
910                 set_refuse_options(ref);
911         if (am_daemon) {
912                 set_refuse_options("log-file*");
913 #ifdef ICONV_OPTION
914                 if (!*lp_charset(module_id))
915                         set_refuse_options("iconv");
916 #endif
917         }
918
919 #ifdef ICONV_OPTION
920         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
921                 iconv_opt = strdup(arg);
922 #endif
923
924         /* TODO: Call poptReadDefaultConfig; handle errors. */
925
926         /* The context leaks in case of an error, but if there's a
927          * problem we always exit anyhow. */
928         if (pc)
929                 poptFreeContext(pc);
930         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
931         if (!am_server)
932                 poptReadDefaultConfig(pc, 0);
933
934         while ((opt = poptGetNextOpt(pc)) != -1) {
935                 /* most options are handled automatically by popt;
936                  * only special cases are returned and listed here. */
937
938                 switch (opt) {
939                 case OPT_VERSION:
940                         print_rsync_version(FINFO);
941                         exit_cleanup(0);
942
943                 case OPT_SERVER:
944                         if (!am_server) {
945                                 /* Disable popt aliases on the server side and
946                                  * then start parsing the options again. */
947                                 poptFreeContext(pc);
948                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
949                                                     long_options, 0);
950                                 am_server = 1;
951                         }
952 #ifdef ICONV_OPTION
953                         iconv_opt = NULL;
954 #endif
955                         break;
956
957                 case OPT_SENDER:
958                         if (!am_server) {
959                                 usage(FERROR);
960                                 exit_cleanup(RERR_SYNTAX);
961                         }
962                         am_sender = 1;
963                         break;
964
965                 case OPT_DAEMON:
966                         if (am_daemon) {
967                                 strlcpy(err_buf,
968                                         "Attempt to hack rsync thwarted!\n",
969                                         sizeof err_buf);
970                                 return 0;
971                         }
972 #ifdef ICONV_OPTION
973                         iconv_opt = NULL;
974 #endif
975                         poptFreeContext(pc);
976                         pc = poptGetContext(RSYNC_NAME, argc, argv,
977                                             long_daemon_options, 0);
978                         while ((opt = poptGetNextOpt(pc)) != -1) {
979                                 switch (opt) {
980                                 case 'h':
981                                         daemon_usage(FINFO);
982                                         exit_cleanup(0);
983
984                                 case 'v':
985                                         verbose++;
986                                         break;
987
988                                 default:
989                                         rprintf(FERROR,
990                                             "rsync: %s: %s (in daemon mode)\n",
991                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
992                                             poptStrerror(opt));
993                                         goto daemon_error;
994                                 }
995                         }
996
997                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
998                                 snprintf(err_buf, sizeof err_buf,
999                                          "the --temp-dir path is WAY too long.\n");
1000                                 return 0;
1001                         }
1002
1003                         if (!daemon_opt) {
1004                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1005                             daemon_error:
1006                                 rprintf(FERROR,
1007                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1008                                 exit_cleanup(RERR_SYNTAX);
1009                         }
1010
1011                         *argv_p = argv = poptGetArgs(pc);
1012                         *argc_p = argc = count_args(argv);
1013                         am_starting_up = 0;
1014                         daemon_opt = 0;
1015                         am_daemon = 1;
1016                         return 1;
1017
1018                 case OPT_MODIFY_WINDOW:
1019                         /* The value has already been set by popt, but
1020                          * we need to remember that we're using a
1021                          * non-default setting. */
1022                         modify_window_set = 1;
1023                         break;
1024
1025                 case OPT_FILTER:
1026                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1027                         break;
1028
1029                 case OPT_EXCLUDE:
1030                         parse_rule(&filter_list, poptGetOptArg(pc),
1031                                    0, XFLG_OLD_PREFIXES);
1032                         break;
1033
1034                 case OPT_INCLUDE:
1035                         parse_rule(&filter_list, poptGetOptArg(pc),
1036                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1037                         break;
1038
1039                 case OPT_EXCLUDE_FROM:
1040                 case OPT_INCLUDE_FROM:
1041                         arg = poptGetOptArg(pc);
1042                         if (sanitize_paths)
1043                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1044                         if (daemon_filter_list.head) {
1045                                 int rej;
1046                                 char *dir, *cp = strdup(arg);
1047                                 if (!cp)
1048                                         out_of_memory("parse_arguments");
1049                                 if (!*cp)
1050                                         goto options_rejected;
1051                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1052                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1053                                 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1054                                 free(cp);
1055                                 if (rej)
1056                                         goto options_rejected;
1057                         }
1058                         parse_filter_file(&filter_list, arg,
1059                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1060                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1061                         break;
1062
1063                 case 'a':
1064                         if (refused_archive_part) {
1065                                 create_refuse_error(refused_archive_part);
1066                                 return 0;
1067                         }
1068                         if (!recurse) /* preserve recurse == 2 */
1069                                 recurse = 1;
1070 #ifdef SUPPORT_LINKS
1071                         preserve_links = 1;
1072 #endif
1073                         preserve_perms = 1;
1074                         preserve_times = 2;
1075                         preserve_gid = 1;
1076                         preserve_uid = 1;
1077                         preserve_devices = 1;
1078                         preserve_specials = 1;
1079                         break;
1080
1081                 case 'D':
1082                         preserve_devices = preserve_specials = 1;
1083                         break;
1084
1085                 case OPT_NO_D:
1086                         preserve_devices = preserve_specials = 0;
1087                         break;
1088
1089                 case 'h':
1090                         human_readable++;
1091                         break;
1092
1093                 case 'H':
1094                         preserve_hard_links++;
1095                         break;
1096
1097                 case 'i':
1098                         itemize_changes++;
1099                         break;
1100
1101                 case 'v':
1102                         verbose++;
1103                         break;
1104
1105                 case 'q':
1106                         quiet++;
1107                         break;
1108
1109                 case 'x':
1110                         one_file_system++;
1111                         break;
1112
1113                 case 'F':
1114                         switch (++F_option_cnt) {
1115                         case 1:
1116                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1117                                 break;
1118                         case 2:
1119                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1120                                 break;
1121                         }
1122                         break;
1123
1124                 case 'P':
1125                         if (refused_partial || refused_progress) {
1126                                 create_refuse_error(refused_partial
1127                                     ? refused_partial : refused_progress);
1128                                 return 0;
1129                         }
1130                         do_progress = 1;
1131                         keep_partial = 1;
1132                         break;
1133
1134                 case 'z':
1135                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1136                          || def_compress_level > Z_BEST_COMPRESSION) {
1137                                 snprintf(err_buf, sizeof err_buf,
1138                                         "--compress-level value is invalid: %d\n",
1139                                         def_compress_level);
1140                                 return 0;
1141                         }
1142                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1143                         if (do_compression && refused_compress) {
1144                                 create_refuse_error(refused_compress);
1145                                 return 0;
1146                         }
1147                         break;
1148
1149                 case 'M':
1150                         arg = poptGetOptArg(pc);
1151                         if (*arg != '-') {
1152                                 snprintf(err_buf, sizeof err_buf,
1153                                         "Remote option must start with a dash: %s\n", arg);
1154                                 return 0;
1155                         }
1156                         if (remote_option_cnt+2 >= remote_option_alloc) {
1157                                 remote_option_alloc += 16;
1158                                 remote_options = realloc_array(remote_options,
1159                                                         const char *, remote_option_alloc);
1160                                 if (!remote_options)
1161                                         out_of_memory("parse_arguments");
1162                                 if (!remote_option_cnt)
1163                                         remote_options[0] = "ARG0";
1164                         }
1165                         remote_options[++remote_option_cnt] = arg;
1166                         remote_options[remote_option_cnt+1] = NULL;
1167                         break;
1168
1169                 case OPT_WRITE_BATCH:
1170                         /* batch_name is already set */
1171                         write_batch = 1;
1172                         break;
1173
1174                 case OPT_ONLY_WRITE_BATCH:
1175                         /* batch_name is already set */
1176                         write_batch = -1;
1177                         break;
1178
1179                 case OPT_READ_BATCH:
1180                         /* batch_name is already set */
1181                         read_batch = 1;
1182                         break;
1183
1184                 case OPT_NO_ICONV:
1185 #ifdef ICONV_OPTION
1186                         iconv_opt = NULL;
1187 #endif
1188                         break;
1189
1190                 case OPT_MAX_SIZE:
1191                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1192                                 snprintf(err_buf, sizeof err_buf,
1193                                         "--max-size value is invalid: %s\n",
1194                                         max_size_arg);
1195                                 return 0;
1196                         }
1197                         break;
1198
1199                 case OPT_MIN_SIZE:
1200                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1201                                 snprintf(err_buf, sizeof err_buf,
1202                                         "--min-size value is invalid: %s\n",
1203                                         min_size_arg);
1204                                 return 0;
1205                         }
1206                         break;
1207
1208                 case OPT_APPEND:
1209                         if (am_server)
1210                                 append_mode++;
1211                         else
1212                                 append_mode = 1;
1213                         break;
1214
1215                 case OPT_LINK_DEST:
1216 #ifdef SUPPORT_HARD_LINKS
1217                         link_dest = 1;
1218                         dest_option = "--link-dest";
1219                         goto set_dest_dir;
1220 #else
1221                         snprintf(err_buf, sizeof err_buf,
1222                                  "hard links are not supported on this %s\n",
1223                                  am_server ? "server" : "client");
1224                         return 0;
1225 #endif
1226
1227                 case OPT_COPY_DEST:
1228                         copy_dest = 1;
1229                         dest_option = "--copy-dest";
1230                         goto set_dest_dir;
1231
1232                 case OPT_COMPARE_DEST:
1233                         compare_dest = 1;
1234                         dest_option = "--compare-dest";
1235                 set_dest_dir:
1236                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1237                                 snprintf(err_buf, sizeof err_buf,
1238                                         "ERROR: at most %d %s args may be specified\n",
1239                                         MAX_BASIS_DIRS, dest_option);
1240                                 return 0;
1241                         }
1242                         /* We defer sanitizing this arg until we know what
1243                          * our destination directory is going to be. */
1244                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1245                         break;
1246
1247                 case OPT_CHMOD:
1248                         arg = poptGetOptArg(pc);
1249                         if (!parse_chmod(arg, &chmod_modes)) {
1250                                 snprintf(err_buf, sizeof err_buf,
1251                                     "Invalid argument passed to --chmod (%s)\n",
1252                                     arg);
1253                                 return 0;
1254                         }
1255                         break;
1256
1257                 case OPT_HELP:
1258                         usage(FINFO);
1259                         exit_cleanup(0);
1260
1261                 case 'A':
1262 #ifdef SUPPORT_ACLS
1263                         preserve_acls = 1;
1264                         preserve_perms = 1;
1265                         break;
1266 #else
1267                         /* FIXME: this should probably be ignored with a
1268                          * warning and then countermeasures taken to
1269                          * restrict group and other access in the presence
1270                          * of any more restrictive ACLs, but this is safe
1271                          * for now */
1272                         snprintf(err_buf,sizeof(err_buf),
1273                                  "ACLs are not supported on this %s\n",
1274                                  am_server ? "server" : "client");
1275                         return 0;
1276 #endif
1277
1278                 case 'X':
1279 #ifdef SUPPORT_XATTRS
1280                         preserve_xattrs++;
1281                         break;
1282 #else
1283                         snprintf(err_buf,sizeof(err_buf),
1284                                  "extended attributes are not supported on this %s\n",
1285                                  am_server ? "server" : "client");
1286                         return 0;
1287 #endif
1288
1289                 default:
1290                         /* A large opt value means that set_refuse_options()
1291                          * turned this option off. */
1292                         if (opt >= OPT_REFUSED_BASE) {
1293                                 create_refuse_error(opt);
1294                                 return 0;
1295                         }
1296                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1297                                  am_server ? "on remote machine: " : "",
1298                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1299                                  poptStrerror(opt));
1300                         return 0;
1301                 }
1302         }
1303
1304         if (human_readable && argc == 2 && !am_server) {
1305                 /* Allow the old meaning of 'h' (--help) on its own. */
1306                 usage(FINFO);
1307                 exit_cleanup(0);
1308         }
1309
1310 #ifdef ICONV_OPTION
1311         if (iconv_opt && protect_args != 2) {
1312                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1313                         iconv_opt = NULL;
1314                 else
1315                         need_unsorted_flist = 1;
1316         }
1317         if (refused_no_iconv && !iconv_opt) {
1318                 create_refuse_error(refused_no_iconv);
1319                 return 0;
1320         }
1321 #endif
1322
1323         if (protect_args == 1 && am_server)
1324                 return 1;
1325
1326         *argv_p = argv = poptGetArgs(pc);
1327         *argc_p = argc = count_args(argv);
1328
1329 #ifndef SUPPORT_LINKS
1330         if (preserve_links && !am_sender) {
1331                 snprintf(err_buf, sizeof err_buf,
1332                          "symlinks are not supported on this %s\n",
1333                          am_server ? "server" : "client");
1334                 return 0;
1335         }
1336 #endif
1337
1338 #ifndef SUPPORT_HARD_LINKS
1339         if (preserve_hard_links) {
1340                 snprintf(err_buf, sizeof err_buf,
1341                          "hard links are not supported on this %s\n",
1342                          am_server ? "server" : "client");
1343                 return 0;
1344         }
1345 #endif
1346
1347 #ifdef SUPPORT_XATTRS
1348         if (am_root < 0 && preserve_xattrs > 1) {
1349                 snprintf(err_buf, sizeof err_buf,
1350                          "--fake-super conflicts with -XX\n");
1351                 return 0;
1352         }
1353 #else
1354         if (am_root < 0) {
1355                 snprintf(err_buf, sizeof err_buf,
1356                          "--fake-super requires an rsync with extended attributes enabled\n");
1357                 return 0;
1358         }
1359 #endif
1360
1361         if (write_batch && read_batch) {
1362                 snprintf(err_buf, sizeof err_buf,
1363                         "--write-batch and --read-batch can not be used together\n");
1364                 return 0;
1365         }
1366         if (write_batch > 0 || read_batch) {
1367                 if (am_server) {
1368                         rprintf(FINFO,
1369                                 "ignoring --%s-batch option sent to server\n",
1370                                 write_batch ? "write" : "read");
1371                         /* We don't actually exit_cleanup(), so that we can
1372                          * still service older version clients that still send
1373                          * batch args to server. */
1374                         read_batch = write_batch = 0;
1375                         batch_name = NULL;
1376                 } else if (dry_run)
1377                         write_batch = 0;
1378         } else if (write_batch < 0 && dry_run)
1379                 write_batch = 0;
1380         if (read_batch && files_from) {
1381                 snprintf(err_buf, sizeof err_buf,
1382                         "--read-batch cannot be used with --files-from\n");
1383                 return 0;
1384         }
1385         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1386                 snprintf(err_buf, sizeof err_buf,
1387                         "the batch-file name must be %d characters or less.\n",
1388                         MAX_BATCH_NAME_LEN);
1389                 return 0;
1390         }
1391
1392         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1393                 snprintf(err_buf, sizeof err_buf,
1394                          "the --temp-dir path is WAY too long.\n");
1395                 return 0;
1396         }
1397
1398         if (max_delete < 0 && max_delete != INT_MIN) {
1399                 /* Negative numbers are treated as "no deletions". */
1400                 max_delete = 0;
1401         }
1402
1403         if (compare_dest + copy_dest + link_dest > 1) {
1404                 snprintf(err_buf, sizeof err_buf,
1405                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1406                 return 0;
1407         }
1408
1409         if (files_from) {
1410                 if (recurse == 1) /* preserve recurse == 2 */
1411                         recurse = 0;
1412                 if (xfer_dirs < 0)
1413                         xfer_dirs = 1;
1414         }
1415
1416         if (argc < 2 && !read_batch && !am_server)
1417                 list_only |= 1;
1418
1419         if (xfer_dirs >= 4) {
1420                 parse_rule(&filter_list, "- /*/*", 0, 0);
1421                 recurse = xfer_dirs = 1;
1422         } else if (recurse)
1423                 xfer_dirs = 1;
1424         else if (xfer_dirs < 0)
1425                 xfer_dirs = list_only ? 1 : 0;
1426
1427         if (relative_paths < 0)
1428                 relative_paths = files_from? 1 : 0;
1429         if (!relative_paths)
1430                 implied_dirs = 0;
1431
1432         if (delete_before + !!delete_during + delete_after > 1) {
1433                 snprintf(err_buf, sizeof err_buf,
1434                         "You may not combine multiple --delete-WHEN options.\n");
1435                 return 0;
1436         }
1437         if (delete_before || delete_during || delete_after)
1438                 delete_mode = 1;
1439         else if (delete_mode || delete_excluded) {
1440                 /* Only choose now between before & during if one is refused. */
1441                 if (refused_delete_before) {
1442                         if (!refused_delete_during)
1443                                 delete_during = 1;
1444                         else {
1445                                 create_refuse_error(refused_delete_before);
1446                                 return 0;
1447                         }
1448                 } else if (refused_delete_during)
1449                         delete_before = 1;
1450                 delete_mode = 1;
1451         }
1452         if (!xfer_dirs && delete_mode) {
1453                 snprintf(err_buf, sizeof err_buf,
1454                         "--delete does not work without -r or -d.\n");
1455                 return 0;
1456         }
1457
1458         if (delete_mode && refused_delete) {
1459                 create_refuse_error(refused_delete);
1460                 return 0;
1461         }
1462
1463         if (remove_source_files) {
1464                 /* We only want to infer this refusal of --remove-source-files
1465                  * via the refusal of "delete", not any of the "delete-FOO"
1466                  * options. */
1467                 if (refused_delete && am_sender) {
1468                         create_refuse_error(refused_delete);
1469                         return 0;
1470                 }
1471                 need_messages_from_generator = 1;
1472         }
1473
1474         if (sanitize_paths) {
1475                 int i;
1476                 for (i = argc; i-- > 0; )
1477                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
1478                 if (tmpdir)
1479                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
1480                 if (backup_dir)
1481                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
1482         }
1483         if (daemon_filter_list.head && !am_sender) {
1484                 struct filter_list_struct *elp = &daemon_filter_list;
1485                 if (tmpdir) {
1486                         char *dir;
1487                         if (!*tmpdir)
1488                                 goto options_rejected;
1489                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1490                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1491                         if (check_filter(elp, FLOG, dir, 1) < 0)
1492                                 goto options_rejected;
1493                 }
1494                 if (backup_dir) {
1495                         char *dir;
1496                         if (!*backup_dir)
1497                                 goto options_rejected;
1498                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1499                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1500                         if (check_filter(elp, FLOG, dir, 1) < 0)
1501                                 goto options_rejected;
1502                 }
1503         }
1504
1505         if (!backup_suffix)
1506                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1507         backup_suffix_len = strlen(backup_suffix);
1508         if (strchr(backup_suffix, '/') != NULL) {
1509                 snprintf(err_buf, sizeof err_buf,
1510                         "--suffix cannot contain slashes: %s\n",
1511                         backup_suffix);
1512                 return 0;
1513         }
1514         if (backup_dir) {
1515                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1516                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1517                 if (backup_dir_remainder < 32) {
1518                         snprintf(err_buf, sizeof err_buf,
1519                                 "the --backup-dir path is WAY too long.\n");
1520                         return 0;
1521                 }
1522                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1523                         backup_dir_buf[backup_dir_len++] = '/';
1524                         backup_dir_buf[backup_dir_len] = '\0';
1525                 }
1526                 if (verbose > 1 && !am_sender)
1527                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1528         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1529                 snprintf(err_buf, sizeof err_buf,
1530                         "--suffix cannot be a null string without --backup-dir\n");
1531                 return 0;
1532         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1533                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1534                         "P *%s", backup_suffix);
1535                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1536         }
1537
1538         if (make_backups && !backup_dir) {
1539                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1540                 if (preserve_times > 1)
1541                         preserve_times = 1;
1542         } else if (omit_dir_times) {
1543                 if (preserve_times > 1)
1544                         preserve_times = 1;
1545         }
1546
1547         if (stdout_format) {
1548                 if (am_server && log_format_has(stdout_format, 'I'))
1549                         stdout_format_has_i = 2;
1550                 else if (log_format_has(stdout_format, 'i'))
1551                         stdout_format_has_i = itemize_changes | 1;
1552                 if (!log_format_has(stdout_format, 'b')
1553                  && !log_format_has(stdout_format, 'c'))
1554                         log_before_transfer = !am_server;
1555         } else if (itemize_changes) {
1556                 stdout_format = "%i %n%L";
1557                 stdout_format_has_i = itemize_changes;
1558                 log_before_transfer = !am_server;
1559         }
1560
1561         if (do_progress) {
1562                 if (am_server)
1563                         do_progress = 0;
1564                 else if (!verbose && !log_before_transfer && !am_server)
1565                         verbose = 1;
1566         }
1567
1568         if (dry_run)
1569                 do_xfers = 0;
1570
1571         set_io_timeout(io_timeout);
1572
1573         if (verbose && !stdout_format) {
1574                 stdout_format = "%n%L";
1575                 log_before_transfer = !am_server;
1576         }
1577         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1578                 stdout_format_has_o_or_i = 1;
1579
1580         if (logfile_name && !am_daemon) {
1581                 if (!logfile_format) {
1582                         logfile_format = "%i %n%L";
1583                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1584                 } else {
1585                         if (log_format_has(logfile_format, 'i'))
1586                                 logfile_format_has_i = 1;
1587                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1588                                 logfile_format_has_o_or_i = 1;
1589                 }
1590                 log_init(0);
1591         } else if (!am_daemon)
1592                 logfile_format = NULL;
1593
1594         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1595                 bwlimit = daemon_bwlimit;
1596         if (bwlimit) {
1597                 bwlimit_writemax = (size_t)bwlimit * 128;
1598                 if (bwlimit_writemax < 512)
1599                         bwlimit_writemax = 512;
1600         }
1601
1602         if (sparse_files && inplace) {
1603                 /* Note: we don't check for this below, because --append is
1604                  * OK with --sparse (as long as redos are handled right). */
1605                 snprintf(err_buf, sizeof err_buf,
1606                          "--sparse cannot be used with --inplace\n");
1607                 return 0;
1608         }
1609
1610         if (append_mode) {
1611                 if (whole_file > 0) {
1612                         snprintf(err_buf, sizeof err_buf,
1613                                  "--append cannot be used with --whole-file\n");
1614                         return 0;
1615                 }
1616                 if (refused_inplace) {
1617                         create_refuse_error(refused_inplace);
1618                         return 0;
1619                 }
1620                 inplace = 1;
1621         }
1622
1623         if (delay_updates && !partial_dir)
1624                 partial_dir = tmp_partialdir;
1625
1626         if (inplace) {
1627 #ifdef HAVE_FTRUNCATE
1628                 if (partial_dir) {
1629                         snprintf(err_buf, sizeof err_buf,
1630                                  "--%s cannot be used with --%s\n",
1631                                  append_mode ? "append" : "inplace",
1632                                  delay_updates ? "delay-updates" : "partial-dir");
1633                         return 0;
1634                 }
1635                 /* --inplace implies --partial for refusal purposes, but we
1636                  * clear the keep_partial flag for internal logic purposes. */
1637                 if (refused_partial) {
1638                         create_refuse_error(refused_partial);
1639                         return 0;
1640                 }
1641                 keep_partial = 0;
1642 #else
1643                 snprintf(err_buf, sizeof err_buf,
1644                          "--%s is not supported on this %s\n",
1645                          append_mode ? "append" : "inplace",
1646                          am_server ? "server" : "client");
1647                 return 0;
1648 #endif
1649         } else {
1650                 if (keep_partial && !partial_dir && !am_server) {
1651                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1652                                 partial_dir = strdup(arg);
1653                 }
1654                 if (partial_dir) {
1655                         if (*partial_dir)
1656                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1657                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1658                                 partial_dir = NULL;
1659                         if (!partial_dir && refused_partial) {
1660                                 create_refuse_error(refused_partial);
1661                                 return 0;
1662                         }
1663                         keep_partial = 1;
1664                 }
1665         }
1666
1667         if (files_from) {
1668                 char *h, *p;
1669                 int q;
1670                 if (argc > 2 || (!am_daemon && argc == 1)) {
1671                         usage(FERROR);
1672                         exit_cleanup(RERR_SYNTAX);
1673                 }
1674                 if (strcmp(files_from, "-") == 0) {
1675                         filesfrom_fd = 0;
1676                         if (am_server)
1677                                 filesfrom_host = ""; /* reading from socket */
1678                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1679                         if (am_server) {
1680                                 snprintf(err_buf, sizeof err_buf,
1681                                         "The --files-from sent to the server cannot specify a host.\n");
1682                                 return 0;
1683                         }
1684                         files_from = p;
1685                         filesfrom_host = h;
1686                         if (strcmp(files_from, "-") == 0) {
1687                                 snprintf(err_buf, sizeof err_buf,
1688                                         "Invalid --files-from remote filename\n");
1689                                 return 0;
1690                         }
1691                 } else {
1692                         if (sanitize_paths)
1693                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
1694                         if (daemon_filter_list.head) {
1695                                 char *dir;
1696                                 if (!*files_from)
1697                                         goto options_rejected;
1698                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
1699                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1700                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
1701                                         goto options_rejected;
1702                         }
1703                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1704                         if (filesfrom_fd < 0) {
1705                                 snprintf(err_buf, sizeof err_buf,
1706                                         "failed to open files-from file %s: %s\n",
1707                                         files_from, strerror(errno));
1708                                 return 0;
1709                         }
1710                 }
1711         }
1712
1713         am_starting_up = 0;
1714
1715         return 1;
1716
1717   options_rejected:
1718         snprintf(err_buf, sizeof err_buf,
1719                 "Your options have been rejected by the server.\n");
1720         return 0;
1721 }
1722
1723
1724 /**
1725  * Construct a filtered list of options to pass through from the
1726  * client to the server.
1727  *
1728  * This involves setting options that will tell the server how to
1729  * behave, and also filtering out options that are processed only
1730  * locally.
1731  **/
1732 void server_options(char **args, int *argc_p)
1733 {
1734         static char argstr[64];
1735         int ac = *argc_p;
1736         char *arg;
1737         int i, x;
1738
1739         /* This should always remain first on the server's command-line. */
1740         args[ac++] = "--server";
1741
1742         if (daemon_over_rsh > 0) {
1743                 args[ac++] = "--daemon";
1744                 *argc_p = ac;
1745                 /* if we're passing --daemon, we're done */
1746                 return;
1747         }
1748
1749         if (!am_sender)
1750                 args[ac++] = "--sender";
1751
1752         x = 1;
1753         argstr[0] = '-';
1754
1755         if (protect_args)
1756                 argstr[x++] = 's';
1757
1758         for (i = 0; i < verbose; i++)
1759                 argstr[x++] = 'v';
1760
1761         /* the -q option is intentionally left out */
1762         if (make_backups)
1763                 argstr[x++] = 'b';
1764         if (update_only)
1765                 argstr[x++] = 'u';
1766         if (!do_xfers) /* Note: NOT "dry_run"! */
1767                 argstr[x++] = 'n';
1768         if (preserve_links)
1769                 argstr[x++] = 'l';
1770         if ((xfer_dirs >= 2 && xfer_dirs < 4)
1771          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
1772                 argstr[x++] = 'd';
1773         if (am_sender) {
1774                 if (keep_dirlinks)
1775                         argstr[x++] = 'K';
1776                 if (prune_empty_dirs)
1777                         argstr[x++] = 'm';
1778                 if (omit_dir_times)
1779                         argstr[x++] = 'O';
1780         } else {
1781                 if (copy_links)
1782                         argstr[x++] = 'L';
1783                 if (copy_dirlinks)
1784                         argstr[x++] = 'k';
1785         }
1786
1787         if (whole_file > 0)
1788                 argstr[x++] = 'W';
1789         /* We don't need to send --no-whole-file, because it's the
1790          * default for remote transfers, and in any case old versions
1791          * of rsync will not understand it. */
1792
1793         if (preserve_hard_links) {
1794                 argstr[x++] = 'H';
1795                 if (preserve_hard_links > 1)
1796                         argstr[x++] = 'H';
1797         }
1798         if (preserve_uid)
1799                 argstr[x++] = 'o';
1800         if (preserve_gid)
1801                 argstr[x++] = 'g';
1802         if (preserve_devices) /* ignore preserve_specials here */
1803                 argstr[x++] = 'D';
1804         if (preserve_times)
1805                 argstr[x++] = 't';
1806         if (preserve_perms)
1807                 argstr[x++] = 'p';
1808         else if (preserve_executability && am_sender)
1809                 argstr[x++] = 'E';
1810 #ifdef SUPPORT_ACLS
1811         if (preserve_acls)
1812                 argstr[x++] = 'A';
1813 #endif
1814 #ifdef SUPPORT_XATTRS
1815         if (preserve_xattrs) {
1816                 argstr[x++] = 'X';
1817                 if (preserve_xattrs > 1)
1818                         argstr[x++] = 'X';
1819         }
1820 #endif
1821         if (recurse)
1822                 argstr[x++] = 'r';
1823         if (always_checksum)
1824                 argstr[x++] = 'c';
1825         if (cvs_exclude)
1826                 argstr[x++] = 'C';
1827         if (ignore_times)
1828                 argstr[x++] = 'I';
1829         if (relative_paths)
1830                 argstr[x++] = 'R';
1831         if (one_file_system) {
1832                 argstr[x++] = 'x';
1833                 if (one_file_system > 1)
1834                         argstr[x++] = 'x';
1835         }
1836         if (sparse_files)
1837                 argstr[x++] = 'S';
1838         if (do_compression)
1839                 argstr[x++] = 'z';
1840
1841         set_allow_inc_recurse();
1842
1843         /* Checking the pre-negotiated value allows --protocol=29 override. */
1844         if (protocol_version >= 30) {
1845                 /* We make use of the -e option to let the server know about
1846                  * any pre-release protocol version && some behavior flags. */
1847                 argstr[x++] = 'e';
1848 #if SUBPROTOCOL_VERSION != 0
1849                 if (protocol_version == PROTOCOL_VERSION) {
1850                         x += snprintf(argstr+x, sizeof argstr - x,
1851                                       "%d.%d",
1852                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
1853                 } else
1854 #endif
1855                         argstr[x++] = '.';
1856                 if (allow_inc_recurse)
1857                         argstr[x++] = 'i';
1858 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
1859                 argstr[x++] = 'L';
1860 #endif
1861         }
1862
1863         argstr[x] = '\0';
1864
1865         if (x > (int)sizeof argstr) { /* Not possible... */
1866                 rprintf(FERROR, "argstr overflow in server_options().\n");
1867                 exit_cleanup(RERR_MALLOC);
1868         }
1869
1870         args[ac++] = argstr;
1871
1872 #ifdef ICONV_OPTION
1873         if (iconv_opt) {
1874                 char *set = strchr(iconv_opt, ',');
1875                 if (set)
1876                         set++;
1877                 else
1878                         set = iconv_opt;
1879                 if (asprintf(&arg, "--iconv=%s", set) < 0)
1880                         goto oom;
1881                 args[ac++] = arg;
1882         }
1883 #endif
1884
1885         if (protect_args && !local_server) /* unprotected args stop here */
1886                 args[ac++] = NULL;
1887
1888         if (list_only > 1)
1889                 args[ac++] = "--list-only";
1890
1891         /* This makes sure that the remote rsync can handle deleting with -d
1892          * sans -r because the --no-r option was added at the same time. */
1893         if (xfer_dirs && !recurse && delete_mode && am_sender)
1894                 args[ac++] = "--no-r";
1895
1896         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1897                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1898                         goto oom;
1899                 args[ac++] = arg;
1900         }
1901
1902         if (preserve_devices) {
1903                 /* Note: sending "--devices" would not be backward-compatible. */
1904                 if (!preserve_specials)
1905                         args[ac++] = "--no-specials"; /* -D is already set. */
1906         } else if (preserve_specials)
1907                 args[ac++] = "--specials";
1908
1909         /* The server side doesn't use our log-format, but in certain
1910          * circumstances they need to know a little about the option. */
1911         if (stdout_format && am_sender) {
1912                 /* Use --log-format, not --out-format, for compatibility. */
1913                 if (stdout_format_has_i > 1)
1914                         args[ac++] = "--log-format=%i%I";
1915                 else if (stdout_format_has_i)
1916                         args[ac++] = "--log-format=%i";
1917                 else if (stdout_format_has_o_or_i)
1918                         args[ac++] = "--log-format=%o";
1919                 else if (!verbose)
1920                         args[ac++] = "--log-format=X";
1921         }
1922
1923         if (block_size) {
1924                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1925                         goto oom;
1926                 args[ac++] = arg;
1927         }
1928
1929         if (io_timeout) {
1930                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1931                         goto oom;
1932                 args[ac++] = arg;
1933         }
1934
1935         if (bwlimit) {
1936                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1937                         goto oom;
1938                 args[ac++] = arg;
1939         }
1940
1941         if (backup_dir) {
1942                 args[ac++] = "--backup-dir";
1943                 args[ac++] = backup_dir;
1944         }
1945
1946         /* Only send --suffix if it specifies a non-default value. */
1947         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1948                 /* We use the following syntax to avoid weirdness with '~'. */
1949                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1950                         goto oom;
1951                 args[ac++] = arg;
1952         }
1953
1954         if (am_sender) {
1955                 if (max_delete > 0) {
1956                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1957                                 goto oom;
1958                         args[ac++] = arg;
1959                 } else if (max_delete == 0)
1960                         args[ac++] = "--max-delete=-1";
1961                 if (min_size) {
1962                         args[ac++] = "--min-size";
1963                         args[ac++] = min_size_arg;
1964                 }
1965                 if (max_size) {
1966                         args[ac++] = "--max-size";
1967                         args[ac++] = max_size_arg;
1968                 }
1969                 if (delete_before)
1970                         args[ac++] = "--delete-before";
1971                 else if (delete_during == 2)
1972                         args[ac++] = "--delete-delay";
1973                 else if (delete_during)
1974                         args[ac++] = "--delete-during";
1975                 else if (delete_after)
1976                         args[ac++] = "--delete-after";
1977                 else if (delete_mode && !delete_excluded)
1978                         args[ac++] = "--delete";
1979                 if (delete_excluded)
1980                         args[ac++] = "--delete-excluded";
1981                 if (force_delete)
1982                         args[ac++] = "--force";
1983                 if (write_batch < 0)
1984                         args[ac++] = "--only-write-batch=X";
1985                 if (am_root > 1)
1986                         args[ac++] = "--super";
1987                 if (size_only)
1988                         args[ac++] = "--size-only";
1989         } else {
1990                 if (skip_compress) {
1991                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
1992                                 goto oom;
1993                         args[ac++] = arg;
1994                 }
1995         }
1996
1997         if (modify_window_set) {
1998                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1999                         goto oom;
2000                 args[ac++] = arg;
2001         }
2002
2003         if (checksum_seed) {
2004                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2005                         goto oom;
2006                 args[ac++] = arg;
2007         }
2008
2009         if (partial_dir && am_sender) {
2010                 if (partial_dir != tmp_partialdir) {
2011                         args[ac++] = "--partial-dir";
2012                         args[ac++] = partial_dir;
2013                 }
2014                 if (delay_updates)
2015                         args[ac++] = "--delay-updates";
2016         } else if (keep_partial && am_sender)
2017                 args[ac++] = "--partial";
2018
2019         if (ignore_errors)
2020                 args[ac++] = "--ignore-errors";
2021
2022         if (copy_unsafe_links)
2023                 args[ac++] = "--copy-unsafe-links";
2024
2025         if (safe_symlinks)
2026                 args[ac++] = "--safe-links";
2027
2028         if (numeric_ids)
2029                 args[ac++] = "--numeric-ids";
2030
2031         if (use_qsort)
2032                 args[ac++] = "--use-qsort";
2033
2034         if (am_sender) {
2035                 if (ignore_existing)
2036                         args[ac++] = "--ignore-existing";
2037
2038                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2039                 if (ignore_non_existing)
2040                         args[ac++] = "--existing";
2041
2042                 if (tmpdir) {
2043                         args[ac++] = "--temp-dir";
2044                         args[ac++] = tmpdir;
2045                 }
2046
2047                 if (basis_dir[0]) {
2048                         /* the server only needs this option if it is not the sender,
2049                          *   and it may be an older version that doesn't know this
2050                          *   option, so don't send it if client is the sender.
2051                          */
2052                         int i;
2053                         for (i = 0; i < basis_dir_cnt; i++) {
2054                                 args[ac++] = dest_option;
2055                                 args[ac++] = basis_dir[i];
2056                         }
2057                 }
2058         }
2059
2060         if (append_mode) {
2061                 if (append_mode > 1)
2062                         args[ac++] = "--append";
2063                 args[ac++] = "--append";
2064         } else if (inplace)
2065                 args[ac++] = "--inplace";
2066
2067         if (files_from && (!am_sender || filesfrom_host)) {
2068                 if (filesfrom_host) {
2069                         args[ac++] = "--files-from";
2070                         args[ac++] = files_from;
2071                         if (eol_nulls)
2072                                 args[ac++] = "--from0";
2073                 } else {
2074                         args[ac++] = "--files-from=-";
2075                         args[ac++] = "--from0";
2076                 }
2077                 if (!relative_paths)
2078                         args[ac++] = "--no-relative";
2079         }
2080         /* It's OK that this checks the upper-bound of the protocol_version. */
2081         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2082                 args[ac++] = "--no-implied-dirs";
2083
2084         if (fuzzy_basis && am_sender)
2085                 args[ac++] = "--fuzzy";
2086
2087         if (remove_source_files == 1)
2088                 args[ac++] = "--remove-source-files";
2089         else if (remove_source_files)
2090                 args[ac++] = "--remove-sent-files";
2091
2092         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2093                 rprintf(FERROR, "argc overflow in server_options().\n");
2094                 exit_cleanup(RERR_MALLOC);
2095         }
2096
2097         if (remote_option_cnt) {
2098                 int j;
2099                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2100                         rprintf(FERROR, "too many remote options specified.\n");
2101                         exit_cleanup(RERR_SYNTAX);
2102                 }
2103                 for (j = 1; j <= remote_option_cnt; j++)
2104                         args[ac++] = (char*)remote_options[j];
2105         }
2106
2107         *argc_p = ac;
2108         return;
2109
2110     oom:
2111         out_of_memory("server_options");
2112 }
2113
2114 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2115  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2116  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2117  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2118  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2119  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2120  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2121 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2122 {
2123         char *p;
2124         int not_host;
2125         int hostlen;
2126
2127         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2128                 char *path;
2129                 s += strlen(URL_PREFIX);
2130                 if ((p = strchr(s, '/')) != NULL) {
2131                         hostlen = p - s;
2132                         path = p + 1;
2133                 } else {
2134                         hostlen = strlen(s);
2135                         path = "";
2136                 }
2137                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2138                         s++;
2139                         hostlen = p - s;
2140                         if (p[1] == ':')
2141                                 *port_ptr = atoi(p+2);
2142                 } else {
2143                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2144                                 hostlen = p - s;
2145                                 *port_ptr = atoi(p+1);
2146                         }
2147                 }
2148                 if (!*port_ptr)
2149                         *port_ptr = RSYNC_PORT;
2150                 *host_ptr = new_array(char, hostlen + 1);
2151                 strlcpy(*host_ptr, s, hostlen + 1);
2152                 return path;
2153         }
2154
2155         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2156                 s++;
2157                 hostlen = p - s;
2158                 *p = '\0';
2159                 not_host = strchr(s, '/') || !strchr(s, ':');
2160                 *p = ']';
2161                 if (not_host)
2162                         return NULL;
2163                 p++;
2164         } else {
2165                 if (!(p = strchr(s, ':')))
2166                         return NULL;
2167                 hostlen = p - s;
2168                 *p = '\0';
2169                 not_host = strchr(s, '/') != NULL;
2170                 *p = ':';
2171                 if (not_host)
2172                         return NULL;
2173         }
2174
2175         *host_ptr = new_array(char, hostlen + 1);
2176         strlcpy(*host_ptr, s, hostlen + 1);
2177
2178         if (p[1] == ':') {
2179                 if (port_ptr && !*port_ptr)
2180                         *port_ptr = RSYNC_PORT;
2181                 return p + 2;
2182         }
2183         if (port_ptr)
2184                 *port_ptr = 0;
2185
2186         return p + 1;
2187 }