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Some indentation fixes.
[thirdparty/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) 2002-2020 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 "itypes.h"
24 #include "latest-year.h"
25 #include <popt.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 name_num_obj valid_checksums;
33 extern struct name_num_obj valid_compressions;
34 extern filter_rule_list filter_list;
35 extern filter_rule_list daemon_filter_list;
36
37 int make_backups = 0;
38
39 /**
40 * If 1, send the whole file as literal data rather than trying to
41 * create an incremental diff.
42 *
43 * If -1, then look at whether we're local or remote and go by that.
44 *
45 * @sa disable_deltas_p()
46 **/
47 int whole_file = -1;
48
49 int append_mode = 0;
50 int keep_dirlinks = 0;
51 int copy_dirlinks = 0;
52 int copy_links = 0;
53 int write_devices = 0;
54 int preserve_links = 0;
55 int preserve_hard_links = 0;
56 int preserve_acls = 0;
57 int preserve_xattrs = 0;
58 int preserve_perms = 0;
59 int preserve_executability = 0;
60 int preserve_devices = 0;
61 int preserve_specials = 0;
62 int preserve_uid = 0;
63 int preserve_gid = 0;
64 int preserve_times = 0;
65 int preserve_atimes = 0;
66 int update_only = 0;
67 int open_noatime = 0;
68 int cvs_exclude = 0;
69 int dry_run = 0;
70 int do_xfers = 1;
71 int ignore_times = 0;
72 int delete_mode = 0;
73 int delete_during = 0;
74 int delete_before = 0;
75 int delete_after = 0;
76 int delete_excluded = 0;
77 int remove_source_files = 0;
78 int one_file_system = 0;
79 int protocol_version = PROTOCOL_VERSION;
80 int sparse_files = 0;
81 int preallocate_files = 0;
82 int do_compression = 0;
83 int do_compression_level = CLVL_NOT_SPECIFIED;
84 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
85 int am_server = 0;
86 int am_sender = 0;
87 int am_starting_up = 1;
88 int relative_paths = -1;
89 int implied_dirs = 1;
90 int missing_args = 0; /* 0 = FERROR_XFER, 1 = ignore, 2 = delete */
91 int numeric_ids = 0;
92 int msgs2stderr = 0;
93 int allow_8bit_chars = 0;
94 int force_delete = 0;
95 int io_timeout = 0;
96 int prune_empty_dirs = 0;
97 int use_qsort = 0;
98 char *files_from = NULL;
99 int filesfrom_fd = -1;
100 char *filesfrom_host = NULL;
101 int eol_nulls = 0;
102 int protect_args = -1;
103 int human_readable = 1;
104 int recurse = 0;
105 int allow_inc_recurse = 1;
106 int xfer_dirs = -1;
107 int am_daemon = 0;
108 int connect_timeout = 0;
109 int keep_partial = 0;
110 int safe_symlinks = 0;
111 int copy_unsafe_links = 0;
112 int munge_symlinks = 0;
113 int size_only = 0;
114 int daemon_bwlimit = 0;
115 int bwlimit = 0;
116 int fuzzy_basis = 0;
117 size_t bwlimit_writemax = 0;
118 int ignore_existing = 0;
119 int ignore_non_existing = 0;
120 int need_messages_from_generator = 0;
121 int max_delete = INT_MIN;
122 OFF_T max_size = -1;
123 OFF_T min_size = -1;
124 int ignore_errors = 0;
125 int modify_window = 0;
126 int blocking_io = -1;
127 int checksum_seed = 0;
128 int inplace = 0;
129 int delay_updates = 0;
130 long block_size = 0; /* "long" because popt can't set an int32. */
131 char *skip_compress = NULL;
132 char *copy_as = NULL;
133 item_list dparam_list = EMPTY_ITEM_LIST;
134
135 /** Network address family. **/
136 int default_af_hint
137 #ifdef INET6
138 = 0; /* Any protocol */
139 #else
140 = AF_INET; /* Must use IPv4 */
141 # ifdef AF_INET6
142 # undef AF_INET6
143 # endif
144 # define AF_INET6 AF_INET /* make -6 option a no-op */
145 #endif
146
147 /** Do not go into the background when run as --daemon. Good
148 * for debugging and required for running as a service on W32,
149 * or under Unix process-monitors. **/
150 int no_detach
151 #if defined _WIN32 || defined __WIN32__
152 = 1;
153 #else
154 = 0;
155 #endif
156
157 int write_batch = 0;
158 int read_batch = 0;
159 int backup_dir_len = 0;
160 int backup_suffix_len;
161 unsigned int backup_dir_remainder;
162
163 char *backup_suffix = NULL;
164 char *tmpdir = NULL;
165 char *partial_dir = NULL;
166 char *basis_dir[MAX_BASIS_DIRS+1];
167 char *config_file = NULL;
168 char *shell_cmd = NULL;
169 char *logfile_name = NULL;
170 char *logfile_format = NULL;
171 char *stdout_format = NULL;
172 char *password_file = NULL;
173 char *rsync_path = RSYNC_PATH;
174 char *backup_dir = NULL;
175 char backup_dir_buf[MAXPATHLEN];
176 char *sockopts = NULL;
177 char *usermap = NULL;
178 char *groupmap = NULL;
179 int rsync_port = 0;
180 int alt_dest_type = 0;
181 int basis_dir_cnt = 0;
182
183 static int remote_option_alloc = 0;
184 int remote_option_cnt = 0;
185 const char **remote_options = NULL;
186 const char *checksum_choice = NULL;
187 const char *compress_choice = NULL;
188
189 int quiet = 0;
190 int output_motd = 1;
191 int log_before_transfer = 0;
192 int stdout_format_has_i = 0;
193 int stdout_format_has_o_or_i = 0;
194 int logfile_format_has_i = 0;
195 int logfile_format_has_o_or_i = 0;
196 int always_checksum = 0;
197 int list_only = 0;
198
199 #define MAX_BATCH_NAME_LEN 256 /* Must be less than MAXPATHLEN-13 */
200 char *batch_name = NULL;
201
202 int need_unsorted_flist = 0;
203 #ifdef ICONV_OPTION
204 char *iconv_opt = ICONV_OPTION;
205 #endif
206
207 struct chmod_mode_struct *chmod_modes = NULL;
208
209 static const char *debug_verbosity[] = {
210 /*0*/ NULL,
211 /*1*/ NULL,
212 /*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
213 /*3*/ "ACL,BACKUP,CONNECT2,DELTASUM2,DEL2,EXIT,FILTER2,FLIST2,FUZZY,GENR,OWN,RECV,SEND,TIME",
214 /*4*/ "CMD2,DELTASUM3,DEL3,EXIT2,FLIST3,ICONV2,OWN2,PROTO,TIME2",
215 /*5*/ "CHDIR,DELTASUM4,FLIST4,FUZZY2,HASH,HLINK",
216 };
217
218 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
219
220 static const char *info_verbosity[1+MAX_VERBOSITY] = {
221 /*0*/ NULL,
222 /*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
223 /*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
224 };
225
226 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
227
228 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
229
230 #define DEFAULT_PRIORITY 0 /* Default/implied/--verbose set values. */
231 #define HELP_PRIORITY 1 /* The help output uses this level. */
232 #define USER_PRIORITY 2 /* User-specified via --info or --debug */
233 #define LIMIT_PRIORITY 3 /* Overriding priority when limiting values. */
234
235 #define W_CLI (1<<0) /* client side */
236 #define W_SRV (1<<1) /* server side */
237 #define W_SND (1<<2) /* sending side */
238 #define W_REC (1<<3) /* receiving side */
239
240 struct output_struct {
241 char *name; /* The name of the info/debug flag. */
242 char *help; /* The description of the info/debug flag. */
243 uchar namelen; /* The length of the name string. */
244 uchar flag; /* The flag's value, for consistency check. */
245 uchar where; /* Bits indicating where the flag is used. */
246 uchar priority; /* See *_PRIORITY defines. */
247 };
248
249 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
250
251 static struct output_struct info_words[COUNT_INFO+1] = {
252 INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
253 INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
254 INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
255 INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
256 INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
257 INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
258 INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
259 INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
260 INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
261 INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
262 INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
263 INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
264 { NULL, "--info", 0, 0, 0, 0 }
265 };
266
267 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
268
269 static struct output_struct debug_words[COUNT_DEBUG+1] = {
270 DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
271 DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
272 DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
273 DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
274 DEBUG_WORD(CONNECT, W_CLI, "Debug connection events (levels 1-2)"),
275 DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
276 DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
277 DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
278 DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
279 DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-3)"),
280 DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
281 DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
282 DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
283 DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
284 DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
285 DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions (levels 1-3)"),
286 DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
287 DEBUG_WORD(IO, W_CLI|W_SRV, "Debug I/O routines (levels 1-4)"),
288 DEBUG_WORD(NSTR, W_CLI|W_SRV, "Debug negotiation strings"),
289 DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
290 DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
291 DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
292 DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
293 DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
294 { NULL, "--debug", 0, 0, 0, 0 }
295 };
296
297 static int verbose = 0;
298 static int do_stats = 0;
299 static int do_progress = 0;
300 static int daemon_opt; /* sets am_daemon after option error-reporting */
301 static int omit_dir_times = 0;
302 static int omit_link_times = 0;
303 static int F_option_cnt = 0;
304 static int modify_window_set;
305 static int itemize_changes = 0;
306 static int refused_delete, refused_archive_part, refused_compress;
307 static int refused_partial, refused_progress, refused_delete_before;
308 static int refused_delete_during;
309 static int refused_inplace, refused_no_iconv;
310 static BOOL usermap_via_chown, groupmap_via_chown;
311 #ifdef HAVE_SETVBUF
312 static char *outbuf_mode;
313 #endif
314 static char *bwlimit_arg, *max_size_arg, *min_size_arg;
315 static char tmp_partialdir[] = ".~tmp~";
316
317 /** Local address to bind. As a character string because it's
318 * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
319 * address, or a hostname. **/
320 char *bind_address;
321
322 static void output_item_help(struct output_struct *words);
323
324 /* This constructs a string that represents all the options set for either
325 * the --info or --debug setting, skipping any implied options (by -v, etc.).
326 * This is used both when conveying the user's options to the server, and
327 * when the help output wants to tell the user what options are implied. */
328 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
329 {
330 char *str = words == info_words ? "--info=" : "--debug=";
331 int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
332 int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
333 char *buf;
334
335 memset(counts, 0, sizeof counts);
336
337 for (j = 0; words[j].name; j++) {
338 if (words[j].flag != j) {
339 rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
340 words == info_words ? "INFO_" : "DEBUG_",
341 words[j].name, words[j].flag, j);
342 exit_cleanup(RERR_UNSUPPORTED);
343 }
344 if (!(words[j].where & where))
345 continue;
346 if (words[j].priority == DEFAULT_PRIORITY) {
347 /* Implied items don't need to be mentioned. */
348 skipped++;
349 continue;
350 }
351 len += len ? 1 : strlen(str);
352 len += strlen(words[j].name);
353 len += levels[j] == 1 ? 0 : 1;
354
355 if (words[j].priority == HELP_PRIORITY)
356 continue; /* no abbreviating for help */
357
358 assert(levels[j] <= MAX_OUT_LEVEL);
359 if (++counts[levels[j]] > max) {
360 /* Determine which level has the most items. */
361 lev = levels[j];
362 max = counts[lev];
363 }
364 }
365
366 /* Sanity check the COUNT_* define against the length of the table. */
367 if (j != word_count) {
368 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
369 words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
370 j, word_count);
371 exit_cleanup(RERR_UNSUPPORTED);
372 }
373
374 if (!len)
375 return NULL;
376
377 len++;
378 if (!(buf = new_array(char, len)))
379 out_of_memory("make_output_option");
380 pos = 0;
381
382 if (skipped || max < 5)
383 lev = -1;
384 else {
385 if (lev == 0)
386 pos += snprintf(buf, len, "%sNONE", str);
387 else if (lev == 1)
388 pos += snprintf(buf, len, "%sALL", str);
389 else
390 pos += snprintf(buf, len, "%sALL%d", str, lev);
391 }
392
393 for (j = 0; words[j].name && pos < len; j++) {
394 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
395 continue;
396 if (pos)
397 buf[pos++] = ',';
398 else
399 pos += strlcpy(buf+pos, str, len-pos);
400 if (pos < len)
401 pos += strlcpy(buf+pos, words[j].name, len-pos);
402 /* Level 1 is implied by the name alone. */
403 if (levels[j] != 1 && pos < len)
404 buf[pos++] = '0' + levels[j];
405 }
406
407 buf[pos] = '\0';
408
409 return buf;
410 }
411
412 static void parse_output_words(struct output_struct *words, short *levels, const char *str, uchar priority)
413 {
414 const char *s;
415 int j, len, lev;
416
417 for ( ; str; str = s) {
418 if ((s = strchr(str, ',')) != NULL)
419 len = s++ - str;
420 else
421 len = strlen(str);
422 if (!len)
423 continue;
424 if (!isDigit(str)) {
425 while (len && isDigit(str+len-1))
426 len--;
427 }
428 lev = isDigit(str+len) ? atoi(str+len) : 1;
429 if (lev > MAX_OUT_LEVEL)
430 lev = MAX_OUT_LEVEL;
431 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
432 output_item_help(words);
433 exit_cleanup(0);
434 }
435 if (len == 4 && strncasecmp(str, "none", 4) == 0)
436 len = lev = 0;
437 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
438 len = 0;
439 for (j = 0; words[j].name; j++) {
440 if (!len
441 || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
442 if (priority >= words[j].priority) {
443 words[j].priority = priority;
444 levels[j] = lev;
445 }
446 if (len)
447 break;
448 }
449 }
450 if (len && !words[j].name && !am_server) {
451 rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
452 words[j].help, len, str);
453 exit_cleanup(RERR_SYNTAX);
454 }
455 }
456 }
457
458 /* Tell the user what all the info or debug flags mean. */
459 static void output_item_help(struct output_struct *words)
460 {
461 short *levels = words == info_words ? info_levels : debug_levels;
462 const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
463 char buf[128], *opt, *fmt = "%-10s %s\n";
464 int j;
465
466 reset_output_levels();
467
468 rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
469 rprintf(FINFO, "\n");
470 for (j = 0; words[j].name; j++)
471 rprintf(FINFO, fmt, words[j].name, words[j].help);
472 rprintf(FINFO, "\n");
473
474 snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
475 words[j].help, MAX_OUT_LEVEL);
476 rprintf(FINFO, fmt, "ALL", buf);
477
478 snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
479 words[j].help);
480 rprintf(FINFO, fmt, "NONE", buf);
481
482 rprintf(FINFO, fmt, "HELP", "Output this help message");
483 rprintf(FINFO, "\n");
484 rprintf(FINFO, "Options added for each increase in verbose level:\n");
485
486 for (j = 1; j <= MAX_VERBOSITY; j++) {
487 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
488 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
489 if (opt) {
490 rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
491 free(opt);
492 }
493 reset_output_levels();
494 }
495 }
496
497 /* The --verbose option now sets info+debug flags. */
498 static void set_output_verbosity(int level, uchar priority)
499 {
500 int j;
501
502 if (level > MAX_VERBOSITY)
503 level = MAX_VERBOSITY;
504
505 for (j = 1; j <= level; j++) {
506 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
507 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
508 }
509 }
510
511 /* Limit the info+debug flag levels given a verbose-option level limit. */
512 void limit_output_verbosity(int level)
513 {
514 short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
515 int j;
516
517 if (level > MAX_VERBOSITY)
518 return;
519
520 memset(info_limits, 0, sizeof info_limits);
521 memset(debug_limits, 0, sizeof debug_limits);
522
523 /* Compute the level limits in the above arrays. */
524 for (j = 1; j <= level; j++) {
525 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
526 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
527 }
528
529 for (j = 0; j < COUNT_INFO; j++) {
530 if (info_levels[j] > info_limits[j])
531 info_levels[j] = info_limits[j];
532 }
533
534 for (j = 0; j < COUNT_DEBUG; j++) {
535 if (debug_levels[j] > debug_limits[j])
536 debug_levels[j] = debug_limits[j];
537 }
538 }
539
540 void reset_output_levels(void)
541 {
542 int j;
543
544 memset(info_levels, 0, sizeof info_levels);
545 memset(debug_levels, 0, sizeof debug_levels);
546
547 for (j = 0; j < COUNT_INFO; j++)
548 info_words[j].priority = DEFAULT_PRIORITY;
549
550 for (j = 0; j < COUNT_DEBUG; j++)
551 debug_words[j].priority = DEFAULT_PRIORITY;
552 }
553
554 void negate_output_levels(void)
555 {
556 int j;
557
558 for (j = 0; j < COUNT_INFO; j++)
559 info_levels[j] *= -1;
560
561 for (j = 0; j < COUNT_DEBUG; j++)
562 debug_levels[j] *= -1;
563 }
564
565 static char *istring(const char *fmt, int val)
566 {
567 char *str;
568 if (asprintf(&str, fmt, val) < 0)
569 out_of_memory("istring");
570 return str;
571 }
572
573 static void print_capabilities(enum logcode f)
574 {
575 STRUCT_STAT *dumstat;
576 char line_buf[75];
577 int line_len, j;
578 char *capabilities[] = {
579 istring("%d-bit files", (int)(sizeof (OFF_T) * 8)),
580 istring("%d-bit inums", (int)(sizeof dumstat->st_ino * 8)), /* Don't check ino_t! */
581 istring("%d-bit timestamps", (int)(sizeof (time_t) * 8)),
582 istring("%d-bit long ints", (int)(sizeof (int64) * 8)),
583
584 #ifndef HAVE_SOCKETPAIR
585 "no "
586 #endif
587 "socketpairs",
588
589 #ifndef SUPPORT_HARD_LINKS
590 "no "
591 #endif
592 "hardlinks",
593
594 #ifndef SUPPORT_LINKS
595 "no "
596 #endif
597 "symlinks",
598
599 #ifndef INET6
600 "no "
601 #endif
602 "IPv6",
603
604 "batchfiles",
605
606 #ifndef HAVE_FTRUNCATE
607 "no "
608 #endif
609 "inplace",
610
611 #ifndef HAVE_FTRUNCATE
612 "no "
613 #endif
614 "append",
615
616 #ifndef SUPPORT_ACLS
617 "no "
618 #endif
619 "ACLs",
620
621 #ifndef SUPPORT_XATTRS
622 "no "
623 #endif
624 "xattrs",
625
626 #ifndef ICONV_OPTION
627 "no "
628 #endif
629 "iconv",
630
631 #ifndef CAN_SET_SYMLINK_TIMES
632 "no "
633 #endif
634 "symtimes",
635
636 #ifndef SUPPORT_PREALLOCATION
637 "no "
638 #endif
639 "prealloc",
640
641 #ifndef HAVE_SIMD
642 "no "
643 #endif
644 "SIMD",
645
646 NULL
647 };
648
649 for (line_len = 0, j = 0; ; j++) {
650 char *cap = capabilities[j];
651 int cap_len = cap ? strlen(cap) : 1000;
652 int need_comma = cap && capabilities[j+1] != NULL ? 1 : 0;
653 if (line_len + 1 + cap_len + need_comma >= (int)sizeof line_buf) {
654 rprintf(f, " %s\n", line_buf);
655 line_len = 0;
656 }
657 if (!cap)
658 break;
659 line_len += snprintf(line_buf+line_len, sizeof line_buf - line_len, " %s%s", cap, need_comma ? "," : "");
660 }
661 }
662
663 static void print_rsync_version(enum logcode f)
664 {
665 char tmpbuf[256], *subprotocol = "";
666
667 #if SUBPROTOCOL_VERSION != 0
668 subprotocol = istring(".PR%d", SUBPROTOCOL_VERSION);
669 #endif
670 rprintf(f, "%s version %s protocol version %d%s\n",
671 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
672
673 rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
674 rprintf(f, "Web site: http://rsync.samba.org/\n");
675
676 rprintf(f, "Capabilities:\n");
677 print_capabilities(f);
678
679 rprintf(f, "Checksum list:\n");
680 get_default_nno_list(&valid_checksums, tmpbuf, sizeof tmpbuf, '(');
681 rprintf(f, " %s\n", tmpbuf);
682
683 rprintf(f, "Compress list:\n");
684 get_default_nno_list(&valid_compressions, tmpbuf, sizeof tmpbuf, '(');
685 rprintf(f, " %s\n", tmpbuf);
686
687 #ifdef MAINTAINER_MODE
688 rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
689 #endif
690
691 #if SIZEOF_INT64 < 8
692 rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
693 #endif
694 if (sizeof (int64) != SIZEOF_INT64) {
695 rprintf(f,
696 "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
697 (int) SIZEOF_INT64, (int) sizeof (int64));
698 }
699
700 rprintf(f,"\n");
701 rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY. This is free software, and you\n");
702 rprintf(f,"are welcome to redistribute it under certain conditions. See the GNU\n");
703 rprintf(f,"General Public Licence for details.\n");
704 }
705
706
707 void usage(enum logcode F)
708 {
709 print_rsync_version(F);
710
711 rprintf(F,"\n");
712 rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
713 rprintf(F,"via a fast differencing algorithm.\n");
714
715 rprintf(F,"\n");
716 rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
717 rprintf(F," or rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
718 rprintf(F," or rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
719 rprintf(F," or rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
720 rprintf(F," or rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
721 rprintf(F," or rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
722 rprintf(F," or rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
723 rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
724 rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
725 rprintf(F,"\n");
726 rprintf(F,"Options\n");
727 #include "help-rsync.h"
728 rprintf(F,"\n");
729 rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
730 rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
731 rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
732 }
733
734 enum {OPT_SERVER = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
735 OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
736 OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
737 OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
738 OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
739 OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN, OPT_BWLIMIT,
740 OPT_OLD_COMPRESS, OPT_NEW_COMPRESS, OPT_NO_COMPRESS,
741 OPT_REFUSED_BASE = 9000};
742
743 static struct poptOption long_options[] = {
744 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
745 {"help", 0, POPT_ARG_NONE, 0, OPT_HELP, 0, 0 },
746 {"version", 'V', POPT_ARG_NONE, 0, 'V', 0, 0},
747 {"verbose", 'v', POPT_ARG_NONE, 0, 'v', 0, 0 },
748 {"no-verbose", 0, POPT_ARG_VAL, &verbose, 0, 0, 0 },
749 {"no-v", 0, POPT_ARG_VAL, &verbose, 0, 0, 0 },
750 {"info", 0, POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
751 {"debug", 0, POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
752 {"msgs2stderr", 0, POPT_ARG_NONE, &msgs2stderr, 0, 0, 0 },
753 {"no-msgs2stderr", 0, POPT_ARG_VAL, &msgs2stderr, 0, 0, 0 },
754 {"quiet", 'q', POPT_ARG_NONE, 0, 'q', 0, 0 },
755 {"motd", 0, POPT_ARG_VAL, &output_motd, 1, 0, 0 },
756 {"no-motd", 0, POPT_ARG_VAL, &output_motd, 0, 0, 0 },
757 {"stats", 0, POPT_ARG_NONE, &do_stats, 0, 0, 0 },
758 {"human-readable", 'h', POPT_ARG_NONE, 0, 'h', 0, 0},
759 {"no-human-readable",0, POPT_ARG_VAL, &human_readable, 0, 0, 0},
760 {"no-h", 0, POPT_ARG_VAL, &human_readable, 0, 0, 0},
761 {"dry-run", 'n', POPT_ARG_NONE, &dry_run, 0, 0, 0 },
762 {"archive", 'a', POPT_ARG_NONE, 0, 'a', 0, 0 },
763 {"recursive", 'r', POPT_ARG_VAL, &recurse, 2, 0, 0 },
764 {"no-recursive", 0, POPT_ARG_VAL, &recurse, 0, 0, 0 },
765 {"no-r", 0, POPT_ARG_VAL, &recurse, 0, 0, 0 },
766 {"inc-recursive", 0, POPT_ARG_VAL, &allow_inc_recurse, 1, 0, 0 },
767 {"no-inc-recursive", 0, POPT_ARG_VAL, &allow_inc_recurse, 0, 0, 0 },
768 {"i-r", 0, POPT_ARG_VAL, &allow_inc_recurse, 1, 0, 0 },
769 {"no-i-r", 0, POPT_ARG_VAL, &allow_inc_recurse, 0, 0, 0 },
770 {"dirs", 'd', POPT_ARG_VAL, &xfer_dirs, 2, 0, 0 },
771 {"no-dirs", 0, POPT_ARG_VAL, &xfer_dirs, 0, 0, 0 },
772 {"no-d", 0, POPT_ARG_VAL, &xfer_dirs, 0, 0, 0 },
773 {"old-dirs", 0, POPT_ARG_VAL, &xfer_dirs, 4, 0, 0 },
774 {"old-d", 0, POPT_ARG_VAL, &xfer_dirs, 4, 0, 0 },
775 {"perms", 'p', POPT_ARG_VAL, &preserve_perms, 1, 0, 0 },
776 {"no-perms", 0, POPT_ARG_VAL, &preserve_perms, 0, 0, 0 },
777 {"no-p", 0, POPT_ARG_VAL, &preserve_perms, 0, 0, 0 },
778 {"executability", 'E', POPT_ARG_NONE, &preserve_executability, 0, 0, 0 },
779 {"acls", 'A', POPT_ARG_NONE, 0, 'A', 0, 0 },
780 {"no-acls", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 },
781 {"no-A", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 },
782 {"xattrs", 'X', POPT_ARG_NONE, 0, 'X', 0, 0 },
783 {"no-xattrs", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 },
784 {"no-X", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 },
785 {"times", 't', POPT_ARG_VAL, &preserve_times, 1, 0, 0 },
786 {"no-times", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 },
787 {"no-t", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 },
788 {"atimes", 'U', POPT_ARG_NONE, 0, 'U', 0, 0 },
789 {"no-atimes", 0, POPT_ARG_VAL, &preserve_atimes, 0, 0, 0 },
790 {"no-U", 0, POPT_ARG_VAL, &preserve_atimes, 0, 0, 0 },
791 {"open-noatime", 0, POPT_ARG_VAL, &open_noatime, 1, 0, 0 },
792 {"no-open-noatime", 0, POPT_ARG_VAL, &open_noatime, 0, 0, 0 },
793 {"omit-dir-times", 'O', POPT_ARG_VAL, &omit_dir_times, 1, 0, 0 },
794 {"no-omit-dir-times",0, POPT_ARG_VAL, &omit_dir_times, 0, 0, 0 },
795 {"no-O", 0, POPT_ARG_VAL, &omit_dir_times, 0, 0, 0 },
796 {"omit-link-times", 'J', POPT_ARG_VAL, &omit_link_times, 1, 0, 0 },
797 {"no-omit-link-times",0, POPT_ARG_VAL, &omit_link_times, 0, 0, 0 },
798 {"no-J", 0, POPT_ARG_VAL, &omit_link_times, 0, 0, 0 },
799 {"modify-window", '@', POPT_ARG_INT, &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
800 {"super", 0, POPT_ARG_VAL, &am_root, 2, 0, 0 },
801 {"no-super", 0, POPT_ARG_VAL, &am_root, 0, 0, 0 },
802 {"fake-super", 0, POPT_ARG_VAL, &am_root, -1, 0, 0 },
803 {"owner", 'o', POPT_ARG_VAL, &preserve_uid, 1, 0, 0 },
804 {"no-owner", 0, POPT_ARG_VAL, &preserve_uid, 0, 0, 0 },
805 {"no-o", 0, POPT_ARG_VAL, &preserve_uid, 0, 0, 0 },
806 {"group", 'g', POPT_ARG_VAL, &preserve_gid, 1, 0, 0 },
807 {"no-group", 0, POPT_ARG_VAL, &preserve_gid, 0, 0, 0 },
808 {"no-g", 0, POPT_ARG_VAL, &preserve_gid, 0, 0, 0 },
809 {0, 'D', POPT_ARG_NONE, 0, 'D', 0, 0 },
810 {"no-D", 0, POPT_ARG_NONE, 0, OPT_NO_D, 0, 0 },
811 {"devices", 0, POPT_ARG_VAL, &preserve_devices, 1, 0, 0 },
812 {"no-devices", 0, POPT_ARG_VAL, &preserve_devices, 0, 0, 0 },
813 {"write-devices", 0, POPT_ARG_VAL, &write_devices, 1, 0, 0 },
814 {"no-write-devices", 0, POPT_ARG_VAL, &write_devices, 0, 0, 0 },
815 {"specials", 0, POPT_ARG_VAL, &preserve_specials, 1, 0, 0 },
816 {"no-specials", 0, POPT_ARG_VAL, &preserve_specials, 0, 0, 0 },
817 {"links", 'l', POPT_ARG_VAL, &preserve_links, 1, 0, 0 },
818 {"no-links", 0, POPT_ARG_VAL, &preserve_links, 0, 0, 0 },
819 {"no-l", 0, POPT_ARG_VAL, &preserve_links, 0, 0, 0 },
820 {"copy-links", 'L', POPT_ARG_NONE, &copy_links, 0, 0, 0 },
821 {"copy-unsafe-links",0, POPT_ARG_NONE, &copy_unsafe_links, 0, 0, 0 },
822 {"safe-links", 0, POPT_ARG_NONE, &safe_symlinks, 0, 0, 0 },
823 {"munge-links", 0, POPT_ARG_VAL, &munge_symlinks, 1, 0, 0 },
824 {"no-munge-links", 0, POPT_ARG_VAL, &munge_symlinks, 0, 0, 0 },
825 {"copy-dirlinks", 'k', POPT_ARG_NONE, &copy_dirlinks, 0, 0, 0 },
826 {"keep-dirlinks", 'K', POPT_ARG_NONE, &keep_dirlinks, 0, 0, 0 },
827 {"hard-links", 'H', POPT_ARG_NONE, 0, 'H', 0, 0 },
828 {"no-hard-links", 0, POPT_ARG_VAL, &preserve_hard_links, 0, 0, 0 },
829 {"no-H", 0, POPT_ARG_VAL, &preserve_hard_links, 0, 0, 0 },
830 {"relative", 'R', POPT_ARG_VAL, &relative_paths, 1, 0, 0 },
831 {"no-relative", 0, POPT_ARG_VAL, &relative_paths, 0, 0, 0 },
832 {"no-R", 0, POPT_ARG_VAL, &relative_paths, 0, 0, 0 },
833 {"implied-dirs", 0, POPT_ARG_VAL, &implied_dirs, 1, 0, 0 },
834 {"no-implied-dirs", 0, POPT_ARG_VAL, &implied_dirs, 0, 0, 0 },
835 {"i-d", 0, POPT_ARG_VAL, &implied_dirs, 1, 0, 0 },
836 {"no-i-d", 0, POPT_ARG_VAL, &implied_dirs, 0, 0, 0 },
837 {"chmod", 0, POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
838 {"ignore-times", 'I', POPT_ARG_NONE, &ignore_times, 0, 0, 0 },
839 {"size-only", 0, POPT_ARG_NONE, &size_only, 0, 0, 0 },
840 {"one-file-system", 'x', POPT_ARG_NONE, 0, 'x', 0, 0 },
841 {"no-one-file-system",0, POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
842 {"no-x", 0, POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
843 {"update", 'u', POPT_ARG_NONE, &update_only, 0, 0, 0 },
844 {"existing", 0, POPT_ARG_NONE, &ignore_non_existing, 0, 0, 0 },
845 {"ignore-non-existing",0,POPT_ARG_NONE, &ignore_non_existing, 0, 0, 0 },
846 {"ignore-existing", 0, POPT_ARG_NONE, &ignore_existing, 0, 0, 0 },
847 {"max-size", 0, POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
848 {"min-size", 0, POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
849 {"sparse", 'S', POPT_ARG_VAL, &sparse_files, 1, 0, 0 },
850 {"no-sparse", 0, POPT_ARG_VAL, &sparse_files, 0, 0, 0 },
851 {"no-S", 0, POPT_ARG_VAL, &sparse_files, 0, 0, 0 },
852 {"preallocate", 0, POPT_ARG_NONE, &preallocate_files, 0, 0, 0},
853 {"inplace", 0, POPT_ARG_VAL, &inplace, 1, 0, 0 },
854 {"no-inplace", 0, POPT_ARG_VAL, &inplace, 0, 0, 0 },
855 {"append", 0, POPT_ARG_NONE, 0, OPT_APPEND, 0, 0 },
856 {"append-verify", 0, POPT_ARG_VAL, &append_mode, 2, 0, 0 },
857 {"no-append", 0, POPT_ARG_VAL, &append_mode, 0, 0, 0 },
858 {"del", 0, POPT_ARG_NONE, &delete_during, 0, 0, 0 },
859 {"delete", 0, POPT_ARG_NONE, &delete_mode, 0, 0, 0 },
860 {"delete-before", 0, POPT_ARG_NONE, &delete_before, 0, 0, 0 },
861 {"delete-during", 0, POPT_ARG_VAL, &delete_during, 1, 0, 0 },
862 {"delete-delay", 0, POPT_ARG_VAL, &delete_during, 2, 0, 0 },
863 {"delete-after", 0, POPT_ARG_NONE, &delete_after, 0, 0, 0 },
864 {"delete-excluded", 0, POPT_ARG_NONE, &delete_excluded, 0, 0, 0 },
865 {"delete-missing-args",0,POPT_BIT_SET, &missing_args, 2, 0, 0 },
866 {"ignore-missing-args",0,POPT_BIT_SET, &missing_args, 1, 0, 0 },
867 {"remove-sent-files",0, POPT_ARG_VAL, &remove_source_files, 2, 0, 0 }, /* deprecated */
868 {"remove-source-files",0,POPT_ARG_VAL, &remove_source_files, 1, 0, 0 },
869 {"force", 0, POPT_ARG_VAL, &force_delete, 1, 0, 0 },
870 {"no-force", 0, POPT_ARG_VAL, &force_delete, 0, 0, 0 },
871 {"ignore-errors", 0, POPT_ARG_VAL, &ignore_errors, 1, 0, 0 },
872 {"no-ignore-errors", 0, POPT_ARG_VAL, &ignore_errors, 0, 0, 0 },
873 {"max-delete", 0, POPT_ARG_INT, &max_delete, 0, 0, 0 },
874 {0, 'F', POPT_ARG_NONE, 0, 'F', 0, 0 },
875 {"filter", 'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
876 {"exclude", 0, POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
877 {"include", 0, POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
878 {"exclude-from", 0, POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
879 {"include-from", 0, POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
880 {"cvs-exclude", 'C', POPT_ARG_NONE, &cvs_exclude, 0, 0, 0 },
881 {"whole-file", 'W', POPT_ARG_VAL, &whole_file, 1, 0, 0 },
882 {"no-whole-file", 0, POPT_ARG_VAL, &whole_file, 0, 0, 0 },
883 {"no-W", 0, POPT_ARG_VAL, &whole_file, 0, 0, 0 },
884 {"checksum", 'c', POPT_ARG_VAL, &always_checksum, 1, 0, 0 },
885 {"no-checksum", 0, POPT_ARG_VAL, &always_checksum, 0, 0, 0 },
886 {"no-c", 0, POPT_ARG_VAL, &always_checksum, 0, 0, 0 },
887 {"checksum-choice", 0, POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
888 {"cc", 0, POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
889 {"block-size", 'B', POPT_ARG_LONG, &block_size, 0, 0, 0 },
890 {"compare-dest", 0, POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
891 {"copy-dest", 0, POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
892 {"link-dest", 0, POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
893 {"fuzzy", 'y', POPT_ARG_NONE, 0, 'y', 0, 0 },
894 {"no-fuzzy", 0, POPT_ARG_VAL, &fuzzy_basis, 0, 0, 0 },
895 {"no-y", 0, POPT_ARG_VAL, &fuzzy_basis, 0, 0, 0 },
896 {"compress", 'z', POPT_ARG_NONE, 0, 'z', 0, 0 },
897 {"old-compress", 0, POPT_ARG_NONE, 0, OPT_OLD_COMPRESS, 0, 0 },
898 {"new-compress", 0, POPT_ARG_NONE, 0, OPT_NEW_COMPRESS, 0, 0 },
899 {"no-compress", 0, POPT_ARG_NONE, 0, OPT_NO_COMPRESS, 0, 0 },
900 {"no-z", 0, POPT_ARG_NONE, 0, OPT_NO_COMPRESS, 0, 0 },
901 {"compress-choice", 0, POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
902 {"zc", 0, POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
903 {"skip-compress", 0, POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
904 {"compress-level", 0, POPT_ARG_INT, &do_compression_level, 0, 0, 0 },
905 {0, 'P', POPT_ARG_NONE, 0, 'P', 0, 0 },
906 {"progress", 0, POPT_ARG_VAL, &do_progress, 1, 0, 0 },
907 {"no-progress", 0, POPT_ARG_VAL, &do_progress, 0, 0, 0 },
908 {"partial", 0, POPT_ARG_VAL, &keep_partial, 1, 0, 0 },
909 {"no-partial", 0, POPT_ARG_VAL, &keep_partial, 0, 0, 0 },
910 {"partial-dir", 0, POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
911 {"delay-updates", 0, POPT_ARG_VAL, &delay_updates, 1, 0, 0 },
912 {"no-delay-updates", 0, POPT_ARG_VAL, &delay_updates, 0, 0, 0 },
913 {"prune-empty-dirs",'m', POPT_ARG_VAL, &prune_empty_dirs, 1, 0, 0 },
914 {"no-prune-empty-dirs",0,POPT_ARG_VAL, &prune_empty_dirs, 0, 0, 0 },
915 {"no-m", 0, POPT_ARG_VAL, &prune_empty_dirs, 0, 0, 0 },
916 {"log-file", 0, POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
917 {"log-file-format", 0, POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
918 {"out-format", 0, POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
919 {"log-format", 0, POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
920 {"itemize-changes", 'i', POPT_ARG_NONE, 0, 'i', 0, 0 },
921 {"no-itemize-changes",0, POPT_ARG_VAL, &itemize_changes, 0, 0, 0 },
922 {"no-i", 0, POPT_ARG_VAL, &itemize_changes, 0, 0, 0 },
923 {"bwlimit", 0, POPT_ARG_STRING, &bwlimit_arg, OPT_BWLIMIT, 0, 0 },
924 {"no-bwlimit", 0, POPT_ARG_VAL, &bwlimit, 0, 0, 0 },
925 {"backup", 'b', POPT_ARG_VAL, &make_backups, 1, 0, 0 },
926 {"no-backup", 0, POPT_ARG_VAL, &make_backups, 0, 0, 0 },
927 {"backup-dir", 0, POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
928 {"suffix", 0, POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
929 {"list-only", 0, POPT_ARG_VAL, &list_only, 2, 0, 0 },
930 {"read-batch", 0, POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
931 {"write-batch", 0, POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
932 {"only-write-batch", 0, POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
933 {"files-from", 0, POPT_ARG_STRING, &files_from, 0, 0, 0 },
934 {"from0", '0', POPT_ARG_VAL, &eol_nulls, 1, 0, 0},
935 {"no-from0", 0, POPT_ARG_VAL, &eol_nulls, 0, 0, 0},
936 {"protect-args", 's', POPT_ARG_VAL, &protect_args, 1, 0, 0},
937 {"no-protect-args", 0, POPT_ARG_VAL, &protect_args, 0, 0, 0},
938 {"no-s", 0, POPT_ARG_VAL, &protect_args, 0, 0, 0},
939 {"numeric-ids", 0, POPT_ARG_VAL, &numeric_ids, 1, 0, 0 },
940 {"no-numeric-ids", 0, POPT_ARG_VAL, &numeric_ids, 0, 0, 0 },
941 {"usermap", 0, POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
942 {"groupmap", 0, POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
943 {"chown", 0, POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
944 {"timeout", 0, POPT_ARG_INT, &io_timeout, 0, 0, 0 },
945 {"no-timeout", 0, POPT_ARG_VAL, &io_timeout, 0, 0, 0 },
946 {"contimeout", 0, POPT_ARG_INT, &connect_timeout, 0, 0, 0 },
947 {"no-contimeout", 0, POPT_ARG_VAL, &connect_timeout, 0, 0, 0 },
948 {"rsh", 'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
949 {"rsync-path", 0, POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
950 {"temp-dir", 'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
951 {"iconv", 0, POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
952 {"no-iconv", 0, POPT_ARG_NONE, 0, OPT_NO_ICONV, 0, 0 },
953 {"ipv4", '4', POPT_ARG_VAL, &default_af_hint, AF_INET, 0, 0 },
954 {"ipv6", '6', POPT_ARG_VAL, &default_af_hint, AF_INET6, 0, 0 },
955 {"8-bit-output", '8', POPT_ARG_VAL, &allow_8bit_chars, 1, 0, 0 },
956 {"no-8-bit-output", 0, POPT_ARG_VAL, &allow_8bit_chars, 0, 0, 0 },
957 {"no-8", 0, POPT_ARG_VAL, &allow_8bit_chars, 0, 0, 0 },
958 {"qsort", 0, POPT_ARG_NONE, &use_qsort, 0, 0, 0 },
959 {"copy-as", 0, POPT_ARG_STRING, &copy_as, 0, 0, 0 },
960 {"address", 0, POPT_ARG_STRING, &bind_address, 0, 0, 0 },
961 {"port", 0, POPT_ARG_INT, &rsync_port, 0, 0, 0 },
962 {"sockopts", 0, POPT_ARG_STRING, &sockopts, 0, 0, 0 },
963 {"password-file", 0, POPT_ARG_STRING, &password_file, 0, 0, 0 },
964 {"blocking-io", 0, POPT_ARG_VAL, &blocking_io, 1, 0, 0 },
965 {"no-blocking-io", 0, POPT_ARG_VAL, &blocking_io, 0, 0, 0 },
966 {"outbuf", 0, POPT_ARG_STRING, &outbuf_mode, 0, 0, 0 },
967 {"remote-option", 'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
968 {"protocol", 0, POPT_ARG_INT, &protocol_version, 0, 0, 0 },
969 {"checksum-seed", 0, POPT_ARG_INT, &checksum_seed, 0, 0, 0 },
970 {"server", 0, POPT_ARG_NONE, 0, OPT_SERVER, 0, 0 },
971 {"sender", 0, POPT_ARG_NONE, 0, OPT_SENDER, 0, 0 },
972 /* All the following options switch us into daemon-mode option-parsing. */
973 {"config", 0, POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
974 {"daemon", 0, POPT_ARG_NONE, 0, OPT_DAEMON, 0, 0 },
975 {"dparam", 0, POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
976 {"detach", 0, POPT_ARG_NONE, 0, OPT_DAEMON, 0, 0 },
977 {"no-detach", 0, POPT_ARG_NONE, 0, OPT_DAEMON, 0, 0 },
978 {0,0,0,0, 0, 0, 0}
979 };
980
981 static void daemon_usage(enum logcode F)
982 {
983 print_rsync_version(F);
984
985 rprintf(F,"\n");
986 rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
987 #include "help-rsyncd.h"
988 rprintf(F,"\n");
989 rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
990 rprintf(F,"daemon-specific rsync options. See also the rsyncd.conf(5) man page.\n");
991 }
992
993 static struct poptOption long_daemon_options[] = {
994 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
995 {"address", 0, POPT_ARG_STRING, &bind_address, 0, 0, 0 },
996 {"bwlimit", 0, POPT_ARG_INT, &daemon_bwlimit, 0, 0, 0 },
997 {"config", 0, POPT_ARG_STRING, &config_file, 0, 0, 0 },
998 {"daemon", 0, POPT_ARG_NONE, &daemon_opt, 0, 0, 0 },
999 {"dparam", 'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1000 {"ipv4", '4', POPT_ARG_VAL, &default_af_hint, AF_INET, 0, 0 },
1001 {"ipv6", '6', POPT_ARG_VAL, &default_af_hint, AF_INET6, 0, 0 },
1002 {"detach", 0, POPT_ARG_VAL, &no_detach, 0, 0, 0 },
1003 {"no-detach", 0, POPT_ARG_VAL, &no_detach, 1, 0, 0 },
1004 {"log-file", 0, POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1005 {"log-file-format", 0, POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1006 {"port", 0, POPT_ARG_INT, &rsync_port, 0, 0, 0 },
1007 {"sockopts", 0, POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1008 {"protocol", 0, POPT_ARG_INT, &protocol_version, 0, 0, 0 },
1009 {"server", 0, POPT_ARG_NONE, &am_server, 0, 0, 0 },
1010 {"temp-dir", 'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1011 {"verbose", 'v', POPT_ARG_NONE, 0, 'v', 0, 0 },
1012 {"no-verbose", 0, POPT_ARG_VAL, &verbose, 0, 0, 0 },
1013 {"no-v", 0, POPT_ARG_VAL, &verbose, 0, 0, 0 },
1014 {"help", 'h', POPT_ARG_NONE, 0, 'h', 0, 0 },
1015 {0,0,0,0, 0, 0, 0}
1016 };
1017
1018
1019 static char err_buf[200];
1020
1021
1022 /**
1023 * Store the option error message, if any, so that we can log the
1024 * connection attempt (which requires parsing the options), and then
1025 * show the error later on.
1026 **/
1027 void option_error(void)
1028 {
1029 if (!err_buf[0]) {
1030 strlcpy(err_buf, "Error parsing options: option may "
1031 "be supported on client but not on server?\n",
1032 sizeof err_buf);
1033 }
1034
1035 rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1036 io_flush(MSG_FLUSH);
1037 msleep(20);
1038 }
1039
1040
1041 static void parse_one_refuse_match(int negated, const char *ref, const struct poptOption *list_end)
1042 {
1043 struct poptOption *op;
1044 char shortName[2];
1045 int is_wild = strpbrk(ref, "*?[") != NULL;
1046 int found_match = 0;
1047
1048 shortName[1] = '\0';
1049
1050 if (strcmp("a", ref) == 0 || strcmp("archive", ref) == 0) {
1051 ref = "[ardlptgoD]";
1052 is_wild = 1;
1053 }
1054
1055 for (op = long_options; op != list_end; op++) {
1056 *shortName = op->shortName;
1057 if ((op->longName && wildmatch(ref, op->longName))
1058 || (*shortName && wildmatch(ref, shortName))) {
1059 if (op->descrip[1] == '*')
1060 op->descrip = negated ? "a*" : "r*";
1061 else if (!is_wild)
1062 op->descrip = negated ? "a=" : "r=";
1063 found_match = 1;
1064 if (!is_wild)
1065 break;
1066 }
1067 }
1068
1069 if (!found_match)
1070 rprintf(FLOG, "No match for refuse-options string \"%s\"\n", ref);
1071 }
1072
1073
1074 /**
1075 * Tweak the option table to disable all options that the rsyncd.conf
1076 * file has told us to refuse.
1077 **/
1078 static void set_refuse_options(void)
1079 {
1080 struct poptOption *op, *list_end = NULL;
1081 char *cp, *ref = lp_refuse_options(module_id);
1082 int negated;
1083
1084 if (!ref)
1085 ref = "";
1086
1087 if (!am_daemon)
1088 ref = "";
1089
1090 /* We abuse the descrip field in poptOption to make it easy to flag which options
1091 * are refused (since we don't use it otherwise). Start by marking all options
1092 * as "a"ccepted with a few options also marked as non-wild. */
1093 for (op = long_options; ; op++) {
1094 const char *longName = op->longName ? op->longName : "";
1095 if (!op->longName && !op->shortName) {
1096 list_end = op;
1097 break;
1098 }
1099 if (!am_daemon
1100 || op->shortName == 'e' /* Required for compatibility flags */
1101 || op->shortName == '0' /* --from0 just modifies --files-from, so refuse that instead (or not) */
1102 || op->shortName == 's' /* --protect-args is always OK */
1103 || op->shortName == 'n' /* --dry-run is always OK */
1104 || strcmp("iconv", longName) == 0
1105 || strcmp("no-iconv", longName) == 0
1106 || strcmp("checksum-seed", longName) == 0
1107 || strcmp("write-devices", longName) == 0 /* disable wild-match (it gets refused below) */
1108 || strcmp("log-format", longName) == 0 /* aka out-format (NOT log-file-format) */
1109 || strcmp("sender", longName) == 0
1110 || strcmp("server", longName) == 0)
1111 op->descrip = "a="; /* exact-match only */
1112 else
1113 op->descrip = "a*"; /* wild-card-able */
1114 }
1115 assert(list_end != NULL);
1116
1117 if (am_daemon) { /* Refused by default, but can be accepted via a negated exact match. */
1118 parse_one_refuse_match(0, "write-devices", list_end);
1119 }
1120
1121 while (1) {
1122 while (*ref == ' ') ref++;
1123 if (!*ref)
1124 break;
1125 if ((cp = strchr(ref, ' ')) != NULL)
1126 *cp = '\0';
1127 negated = *ref == '!';
1128 if (negated && ref[1])
1129 ref++;
1130 parse_one_refuse_match(negated, ref, list_end);
1131 if (!cp)
1132 break;
1133 *cp = ' ';
1134 ref = cp + 1;
1135 }
1136
1137 if (am_daemon) {
1138 #ifdef ICONV_OPTION
1139 if (!*lp_charset(module_id))
1140 parse_one_refuse_match(0, "iconv", list_end);
1141 #endif
1142 parse_one_refuse_match(0, "log-file*", list_end);
1143 }
1144
1145 #ifndef SUPPORT_HARD_LINKS
1146 parse_one_refuse_match(0, "link-dest", list_end);
1147 #endif
1148 #ifndef ICONV_OPTION
1149 parse_one_refuse_match(0, "iconv", list_end);
1150 #endif
1151 #ifndef HAVE_SETVBUF
1152 parse_one_refuse_match(0, "outbuf", list_end);
1153 #endif
1154
1155 /* Now we use the descrip values to actually mark the options for refusal. */
1156 for (op = long_options; op != list_end; op++) {
1157 int refused = op->descrip[0] == 'r';
1158 op->descrip = NULL;
1159 if (!refused)
1160 continue;
1161 if (op->argInfo == POPT_ARG_VAL)
1162 op->argInfo = POPT_ARG_NONE;
1163 op->val = (op - long_options) + OPT_REFUSED_BASE;
1164 /* The following flags are set to let us easily check an implied option later in the code. */
1165 switch (op->shortName) {
1166 case 'r': case 'd': case 'l': case 'p':
1167 case 't': case 'g': case 'o': case 'D':
1168 refused_archive_part = op->val;
1169 break;
1170 case 'z':
1171 refused_compress = op->val;
1172 break;
1173 case '\0':
1174 if (strcmp("delete", op->longName) == 0)
1175 refused_delete = op->val;
1176 else if (strcmp("delete-before", op->longName) == 0)
1177 refused_delete_before = op->val;
1178 else if (strcmp("delete-during", op->longName) == 0)
1179 refused_delete_during = op->val;
1180 else if (strcmp("partial", op->longName) == 0)
1181 refused_partial = op->val;
1182 else if (strcmp("progress", op->longName) == 0)
1183 refused_progress = op->val;
1184 else if (strcmp("inplace", op->longName) == 0)
1185 refused_inplace = op->val;
1186 else if (strcmp("no-iconv", op->longName) == 0)
1187 refused_no_iconv = op->val;
1188 break;
1189 }
1190 }
1191 }
1192
1193
1194 static int count_args(const char **argv)
1195 {
1196 int i = 0;
1197
1198 if (argv) {
1199 while (argv[i] != NULL)
1200 i++;
1201 }
1202
1203 return i;
1204 }
1205
1206
1207 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1208 {
1209 int reps, mult, make_compatible = 0;
1210 const char *arg;
1211 OFF_T size = 1;
1212
1213 for (arg = *size_arg; isDigit(arg); arg++) {}
1214 if (*arg == '.')
1215 for (arg++; isDigit(arg); arg++) {}
1216 switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1217 case 'b': case 'B':
1218 reps = 0;
1219 break;
1220 case 'k': case 'K':
1221 reps = 1;
1222 break;
1223 case 'm': case 'M':
1224 reps = 2;
1225 break;
1226 case 'g': case 'G':
1227 reps = 3;
1228 break;
1229 default:
1230 return -1;
1231 }
1232 if (*arg == 'b' || *arg == 'B')
1233 mult = 1000, make_compatible = 1, arg++;
1234 else if (!*arg || *arg == '+' || *arg == '-')
1235 mult = 1024;
1236 else if (strncasecmp(arg, "ib", 2) == 0)
1237 mult = 1024, arg += 2;
1238 else
1239 return -1;
1240 while (reps--)
1241 size *= mult;
1242 size *= atof(*size_arg);
1243 if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1244 size += atoi(arg), make_compatible = 1, arg += 2;
1245 if (*arg)
1246 return -1;
1247 if (size > 0 && make_compatible && def_suf == 'b') {
1248 /* We convert this manually because we may need %lld precision,
1249 * and that's not a portable sprintf() escape. */
1250 char buf[128], *s = buf + sizeof buf - 1;
1251 OFF_T num = size;
1252 *s = '\0';
1253 while (num) {
1254 *--s = (char)(num % 10) + '0';
1255 num /= 10;
1256 }
1257 if (!(*size_arg = strdup(s)))
1258 out_of_memory("parse_size_arg");
1259 }
1260 return size;
1261 }
1262
1263
1264 static void create_refuse_error(int which)
1265 {
1266 const char *msg;
1267 if (am_daemon)
1268 msg = "The server is configured to refuse";
1269 else if (am_server)
1270 msg = "The server does not support";
1271 else
1272 msg = "This rsync does not support";
1273
1274 /* The "which" value is the index + OPT_REFUSED_BASE. */
1275 struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1276 int n = snprintf(err_buf, sizeof err_buf, "%s --%s\n", msg, op->longName) - 1;
1277 if (op->shortName)
1278 snprintf(err_buf + n, sizeof err_buf - n, " (-%c)\n", op->shortName);
1279 }
1280
1281 /* This is used to make sure that --daemon & --server cannot be aliased to
1282 * something else. These options have always disabled popt aliases for the
1283 * parsing of a daemon or server command-line, but we have to make sure that
1284 * these options cannot vanish so that the alias disabling can take effect. */
1285 static void popt_unalias(poptContext con, const char *opt)
1286 {
1287 struct poptAlias unalias;
1288
1289 memset(&unalias, 0, sizeof unalias);
1290
1291 unalias.longName = opt + 2; /* point past the leading "--" */
1292 unalias.argc = 1;
1293 unalias.argv = new_array0(const char*, 2);
1294 unalias.argv[0] = strdup(opt);
1295
1296 poptAddAlias(con, unalias, 0);
1297 }
1298
1299 char *alt_dest_opt(int type)
1300 {
1301 if (!type)
1302 type = alt_dest_type;
1303
1304 switch (type) {
1305 case COMPARE_DEST:
1306 return "--compare-dest";
1307 case COPY_DEST:
1308 return "--copy-dest";
1309 case LINK_DEST:
1310 return "--link-dest";
1311 default:
1312 assert(0);
1313 }
1314 }
1315
1316 /**
1317 * Process command line arguments. Called on both local and remote.
1318 *
1319 * @retval 1 if all options are OK; with globals set to appropriate
1320 * values
1321 *
1322 * @retval 0 on error, with err_buf containing an explanation
1323 **/
1324 int parse_arguments(int *argc_p, const char ***argv_p)
1325 {
1326 static poptContext pc;
1327 const char *arg, **argv = *argv_p;
1328 int argc = *argc_p;
1329 int opt, want_dest_type;
1330 int orig_protect_args = protect_args;
1331
1332 if (argc == 0) {
1333 strlcpy(err_buf, "argc is zero!\n", sizeof err_buf);
1334 return 0;
1335 }
1336
1337 set_refuse_options();
1338
1339 #ifdef ICONV_OPTION
1340 if (!am_daemon && protect_args <= 0 && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1341 iconv_opt = strdup(arg);
1342 #endif
1343
1344 /* TODO: Call poptReadDefaultConfig; handle errors. */
1345
1346 /* The context leaks in case of an error, but if there's a
1347 * problem we always exit anyhow. */
1348 if (pc)
1349 poptFreeContext(pc);
1350 pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1351 if (!am_server) {
1352 poptReadDefaultConfig(pc, 0);
1353 popt_unalias(pc, "--daemon");
1354 popt_unalias(pc, "--server");
1355 }
1356
1357 while ((opt = poptGetNextOpt(pc)) != -1) {
1358 /* most options are handled automatically by popt;
1359 * only special cases are returned and listed here. */
1360
1361 switch (opt) {
1362 case 'V':
1363 print_rsync_version(FINFO);
1364 exit_cleanup(0);
1365
1366 case OPT_SERVER:
1367 if (!am_server) {
1368 /* Disable popt aliases on the server side and
1369 * then start parsing the options again. */
1370 poptFreeContext(pc);
1371 pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1372 am_server = 1;
1373 }
1374 #ifdef ICONV_OPTION
1375 iconv_opt = NULL;
1376 #endif
1377 break;
1378
1379 case OPT_SENDER:
1380 if (!am_server) {
1381 usage(FERROR);
1382 exit_cleanup(RERR_SYNTAX);
1383 }
1384 am_sender = 1;
1385 break;
1386
1387 case OPT_DAEMON:
1388 if (am_daemon) {
1389 strlcpy(err_buf,
1390 "Attempt to hack rsync thwarted!\n",
1391 sizeof err_buf);
1392 return 0;
1393 }
1394 #ifdef ICONV_OPTION
1395 iconv_opt = NULL;
1396 #endif
1397 protect_args = 0;
1398 poptFreeContext(pc);
1399 pc = poptGetContext(RSYNC_NAME, argc, argv, long_daemon_options, 0);
1400 while ((opt = poptGetNextOpt(pc)) != -1) {
1401 char **cpp;
1402 switch (opt) {
1403 case 'h':
1404 daemon_usage(FINFO);
1405 exit_cleanup(0);
1406
1407 case 'M':
1408 arg = poptGetOptArg(pc);
1409 if (!strchr(arg, '=')) {
1410 rprintf(FERROR,
1411 "--dparam value is missing an '=': %s\n",
1412 arg);
1413 goto daemon_error;
1414 }
1415 cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1416 *cpp = strdup(arg);
1417 break;
1418
1419 case 'v':
1420 verbose++;
1421 break;
1422
1423 default:
1424 rprintf(FERROR,
1425 "rsync: %s: %s (in daemon mode)\n",
1426 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1427 poptStrerror(opt));
1428 goto daemon_error;
1429 }
1430 }
1431
1432 if (dparam_list.count && !set_dparams(1))
1433 exit_cleanup(RERR_SYNTAX);
1434
1435 if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1436 snprintf(err_buf, sizeof err_buf,
1437 "the --temp-dir path is WAY too long.\n");
1438 return 0;
1439 }
1440
1441 if (!daemon_opt) {
1442 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1443 daemon_error:
1444 rprintf(FERROR, "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1445 exit_cleanup(RERR_SYNTAX);
1446 }
1447
1448 *argv_p = argv = poptGetArgs(pc);
1449 *argc_p = argc = count_args(argv);
1450 am_starting_up = 0;
1451 daemon_opt = 0;
1452 am_daemon = 1;
1453 return 1;
1454
1455 case OPT_MODIFY_WINDOW:
1456 /* The value has already been set by popt, but
1457 * we need to remember that we're using a
1458 * non-default setting. */
1459 modify_window_set = 1;
1460 break;
1461
1462 case OPT_FILTER:
1463 parse_filter_str(&filter_list, poptGetOptArg(pc),
1464 rule_template(0), 0);
1465 break;
1466
1467 case OPT_EXCLUDE:
1468 parse_filter_str(&filter_list, poptGetOptArg(pc),
1469 rule_template(0), XFLG_OLD_PREFIXES);
1470 break;
1471
1472 case OPT_INCLUDE:
1473 parse_filter_str(&filter_list, poptGetOptArg(pc),
1474 rule_template(FILTRULE_INCLUDE), XFLG_OLD_PREFIXES);
1475 break;
1476
1477 case OPT_EXCLUDE_FROM:
1478 case OPT_INCLUDE_FROM:
1479 arg = poptGetOptArg(pc);
1480 if (sanitize_paths)
1481 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1482 if (daemon_filter_list.head) {
1483 int rej;
1484 char *cp = strdup(arg);
1485 if (!cp)
1486 out_of_memory("parse_arguments");
1487 if (!*cp)
1488 rej = 1;
1489 else {
1490 char *dir = cp + (*cp == '/' ? module_dirlen : 0);
1491 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1492 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1493 }
1494 free(cp);
1495 if (rej)
1496 goto options_rejected;
1497 }
1498 parse_filter_file(&filter_list, arg,
1499 rule_template(opt == OPT_INCLUDE_FROM ? FILTRULE_INCLUDE : 0),
1500 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1501 break;
1502
1503 case 'a':
1504 if (refused_archive_part) {
1505 create_refuse_error(refused_archive_part);
1506 return 0;
1507 }
1508 if (!recurse) /* preserve recurse == 2 */
1509 recurse = 1;
1510 #ifdef SUPPORT_LINKS
1511 preserve_links = 1;
1512 #endif
1513 preserve_perms = 1;
1514 preserve_times = 1;
1515 preserve_gid = 1;
1516 preserve_uid = 1;
1517 preserve_devices = 1;
1518 preserve_specials = 1;
1519 break;
1520
1521 case 'D':
1522 preserve_devices = preserve_specials = 1;
1523 break;
1524
1525 case OPT_NO_D:
1526 preserve_devices = preserve_specials = 0;
1527 break;
1528
1529 case 'h':
1530 human_readable++;
1531 break;
1532
1533 case 'H':
1534 preserve_hard_links++;
1535 break;
1536
1537 case 'i':
1538 itemize_changes++;
1539 break;
1540
1541 case 'U':
1542 if (++preserve_atimes > 1)
1543 open_noatime = 1;
1544 break;
1545
1546 case 'v':
1547 verbose++;
1548 break;
1549
1550 case 'y':
1551 fuzzy_basis++;
1552 break;
1553
1554 case 'q':
1555 quiet++;
1556 break;
1557
1558 case 'x':
1559 one_file_system++;
1560 break;
1561
1562 case 'F':
1563 switch (++F_option_cnt) {
1564 case 1:
1565 parse_filter_str(&filter_list,": /.rsync-filter",rule_template(0),0);
1566 break;
1567 case 2:
1568 parse_filter_str(&filter_list,"- .rsync-filter",rule_template(0),0);
1569 break;
1570 }
1571 break;
1572
1573 case 'P':
1574 if (refused_partial || refused_progress) {
1575 create_refuse_error(refused_partial ? refused_partial : refused_progress);
1576 return 0;
1577 }
1578 do_progress = 1;
1579 keep_partial = 1;
1580 break;
1581
1582 case 'z':
1583 do_compression++;
1584 break;
1585
1586 case OPT_OLD_COMPRESS:
1587 compress_choice = "zlib";
1588 break;
1589
1590 case OPT_NEW_COMPRESS:
1591 compress_choice = "zlibx";
1592 break;
1593
1594 case OPT_NO_COMPRESS:
1595 do_compression = 0;
1596 compress_choice = NULL;
1597 break;
1598
1599 case 'M':
1600 arg = poptGetOptArg(pc);
1601 if (*arg != '-') {
1602 snprintf(err_buf, sizeof err_buf,
1603 "Remote option must start with a dash: %s\n", arg);
1604 return 0;
1605 }
1606 if (remote_option_cnt+2 >= remote_option_alloc) {
1607 remote_option_alloc += 16;
1608 remote_options = realloc_array(remote_options,
1609 const char *, remote_option_alloc);
1610 if (!remote_options)
1611 out_of_memory("parse_arguments");
1612 if (!remote_option_cnt)
1613 remote_options[0] = "ARG0";
1614 }
1615 remote_options[++remote_option_cnt] = arg;
1616 remote_options[remote_option_cnt+1] = NULL;
1617 break;
1618
1619 case OPT_WRITE_BATCH:
1620 /* batch_name is already set */
1621 write_batch = 1;
1622 break;
1623
1624 case OPT_ONLY_WRITE_BATCH:
1625 /* batch_name is already set */
1626 write_batch = -1;
1627 break;
1628
1629 case OPT_READ_BATCH:
1630 /* batch_name is already set */
1631 read_batch = 1;
1632 break;
1633
1634 case OPT_NO_ICONV:
1635 #ifdef ICONV_OPTION
1636 iconv_opt = NULL;
1637 #endif
1638 break;
1639
1640 case OPT_MAX_SIZE:
1641 if ((max_size = parse_size_arg(&max_size_arg, 'b')) < 0) {
1642 snprintf(err_buf, sizeof err_buf,
1643 "--max-size value is invalid: %s\n",
1644 max_size_arg);
1645 return 0;
1646 }
1647 break;
1648
1649 case OPT_MIN_SIZE:
1650 if ((min_size = parse_size_arg(&min_size_arg, 'b')) < 0) {
1651 snprintf(err_buf, sizeof err_buf,
1652 "--min-size value is invalid: %s\n",
1653 min_size_arg);
1654 return 0;
1655 }
1656 break;
1657
1658 case OPT_BWLIMIT:
1659 {
1660 OFF_T limit = parse_size_arg(&bwlimit_arg, 'K');
1661 if (limit < 0) {
1662 snprintf(err_buf, sizeof err_buf,
1663 "--bwlimit value is invalid: %s\n", bwlimit_arg);
1664 return 0;
1665 }
1666 bwlimit = (limit + 512) / 1024;
1667 if (limit && !bwlimit) {
1668 snprintf(err_buf, sizeof err_buf,
1669 "--bwlimit value is too small: %s\n", bwlimit_arg);
1670 return 0;
1671 }
1672 }
1673 break;
1674
1675 case OPT_APPEND:
1676 if (am_server)
1677 append_mode++;
1678 else
1679 append_mode = 1;
1680 break;
1681
1682 case OPT_LINK_DEST:
1683 want_dest_type = LINK_DEST;
1684 goto set_dest_dir;
1685
1686 case OPT_COPY_DEST:
1687 want_dest_type = COPY_DEST;
1688 goto set_dest_dir;
1689
1690 case OPT_COMPARE_DEST:
1691 want_dest_type = COMPARE_DEST;
1692
1693 set_dest_dir:
1694 if (alt_dest_type && alt_dest_type != want_dest_type) {
1695 snprintf(err_buf, sizeof err_buf,
1696 "ERROR: the %s option conflicts with the %s option\n",
1697 alt_dest_opt(want_dest_type), alt_dest_opt(0));
1698 return 0;
1699 }
1700 alt_dest_type = want_dest_type;
1701
1702 if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1703 snprintf(err_buf, sizeof err_buf,
1704 "ERROR: at most %d %s args may be specified\n",
1705 MAX_BASIS_DIRS, alt_dest_opt(0));
1706 return 0;
1707 }
1708 /* We defer sanitizing this arg until we know what
1709 * our destination directory is going to be. */
1710 basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1711 break;
1712
1713 case OPT_CHMOD:
1714 arg = poptGetOptArg(pc);
1715 if (!parse_chmod(arg, &chmod_modes)) {
1716 snprintf(err_buf, sizeof err_buf,
1717 "Invalid argument passed to --chmod (%s)\n",
1718 arg);
1719 return 0;
1720 }
1721 break;
1722
1723 case OPT_INFO:
1724 arg = poptGetOptArg(pc);
1725 parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1726 break;
1727
1728 case OPT_DEBUG:
1729 arg = poptGetOptArg(pc);
1730 parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1731 break;
1732
1733 case OPT_USERMAP:
1734 if (usermap) {
1735 if (usermap_via_chown) {
1736 snprintf(err_buf, sizeof err_buf,
1737 "--usermap conflicts with prior --chown.\n");
1738 return 0;
1739 }
1740 snprintf(err_buf, sizeof err_buf,
1741 "You can only specify --usermap once.\n");
1742 return 0;
1743 }
1744 usermap = (char *)poptGetOptArg(pc);
1745 usermap_via_chown = False;
1746 break;
1747
1748 case OPT_GROUPMAP:
1749 if (groupmap) {
1750 if (groupmap_via_chown) {
1751 snprintf(err_buf, sizeof err_buf,
1752 "--groupmap conflicts with prior --chown.\n");
1753 return 0;
1754 }
1755 snprintf(err_buf, sizeof err_buf,
1756 "You can only specify --groupmap once.\n");
1757 return 0;
1758 }
1759 groupmap = (char *)poptGetOptArg(pc);
1760 groupmap_via_chown = False;
1761 break;
1762
1763 case OPT_CHOWN: {
1764 const char *chown = poptGetOptArg(pc);
1765 int len;
1766 if ((arg = strchr(chown, ':')) != NULL)
1767 len = arg++ - chown;
1768 else
1769 len = strlen(chown);
1770 if (len) {
1771 if (usermap) {
1772 if (!usermap_via_chown) {
1773 snprintf(err_buf, sizeof err_buf,
1774 "--chown conflicts with prior --usermap.\n");
1775 return 0;
1776 }
1777 snprintf(err_buf, sizeof err_buf,
1778 "You can only specify a user-affecting --chown once.\n");
1779 return 0;
1780 }
1781 if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
1782 out_of_memory("parse_arguments");
1783 usermap_via_chown = True;
1784 }
1785 if (arg && *arg) {
1786 if (groupmap) {
1787 if (!groupmap_via_chown) {
1788 snprintf(err_buf, sizeof err_buf,
1789 "--chown conflicts with prior --groupmap.\n");
1790 return 0;
1791 }
1792 snprintf(err_buf, sizeof err_buf,
1793 "You can only specify a group-affecting --chown once.\n");
1794 return 0;
1795 }
1796 if (asprintf(&groupmap, "*:%s", arg) < 0)
1797 out_of_memory("parse_arguments");
1798 groupmap_via_chown = True;
1799 }
1800 break;
1801 }
1802
1803 case OPT_HELP:
1804 usage(FINFO);
1805 exit_cleanup(0);
1806
1807 case 'A':
1808 #ifdef SUPPORT_ACLS
1809 preserve_acls = 1;
1810 preserve_perms = 1;
1811 break;
1812 #else
1813 /* FIXME: this should probably be ignored with a
1814 * warning and then countermeasures taken to
1815 * restrict group and other access in the presence
1816 * of any more restrictive ACLs, but this is safe
1817 * for now */
1818 snprintf(err_buf,sizeof(err_buf),
1819 "ACLs are not supported on this %s\n",
1820 am_server ? "server" : "client");
1821 return 0;
1822 #endif
1823
1824 case 'X':
1825 #ifdef SUPPORT_XATTRS
1826 preserve_xattrs++;
1827 break;
1828 #else
1829 snprintf(err_buf,sizeof(err_buf),
1830 "extended attributes are not supported on this %s\n",
1831 am_server ? "server" : "client");
1832 return 0;
1833 #endif
1834
1835 default:
1836 /* A large opt value means that set_refuse_options()
1837 * turned this option off. */
1838 if (opt >= OPT_REFUSED_BASE) {
1839 create_refuse_error(opt);
1840 return 0;
1841 }
1842 snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1843 am_server ? "on remote machine: " : "",
1844 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1845 poptStrerror(opt));
1846 return 0;
1847 }
1848 }
1849
1850 if (protect_args < 0) {
1851 if (am_server)
1852 protect_args = 0;
1853 else if ((arg = getenv("RSYNC_PROTECT_ARGS")) != NULL && *arg)
1854 protect_args = atoi(arg) ? 1 : 0;
1855 else {
1856 #ifdef RSYNC_USE_PROTECTED_ARGS
1857 protect_args = 1;
1858 #else
1859 protect_args = 0;
1860 #endif
1861 }
1862 }
1863
1864 if (checksum_choice && strcasecmp(checksum_choice, "auto") != 0 && strcasecmp(checksum_choice, "auto,auto") != 0) {
1865 /* Call this early to verify the args and figure out if we need to force
1866 * --whole-file. Note that the parse function will get called again later,
1867 * just in case an "auto" choice needs to know the protocol_version. */
1868 parse_checksum_choice(0);
1869 } else
1870 checksum_choice = NULL;
1871
1872 if (human_readable > 1 && argc == 2 && !am_server) {
1873 /* Allow the old meaning of 'h' (--help) on its own. */
1874 usage(FINFO);
1875 exit_cleanup(0);
1876 }
1877
1878 if (!compress_choice && do_compression > 1)
1879 compress_choice = "zlibx";
1880 if (compress_choice && strcasecmp(compress_choice, "auto") != 0)
1881 parse_compress_choice(0); /* Twiddles do_compression and can possibly NULL-out compress_choice. */
1882 else
1883 compress_choice = NULL;
1884
1885 if (do_compression || do_compression_level != CLVL_NOT_SPECIFIED) {
1886 if (!do_compression)
1887 do_compression = CPRES_AUTO;
1888 if (do_compression && refused_compress) {
1889 create_refuse_error(refused_compress);
1890 return 0;
1891 }
1892 }
1893
1894 #ifdef HAVE_SETVBUF
1895 if (outbuf_mode && !am_server) {
1896 int mode = *(uchar *)outbuf_mode;
1897 if (islower(mode))
1898 mode = toupper(mode);
1899 fflush(stdout); /* Just in case... */
1900 switch (mode) {
1901 case 'N': /* None */
1902 case 'U': /* Unbuffered */
1903 mode = _IONBF;
1904 break;
1905 case 'L': /* Line */
1906 mode = _IOLBF;
1907 break;
1908 case 'B': /* Block */
1909 case 'F': /* Full */
1910 mode = _IOFBF;
1911 break;
1912 default:
1913 snprintf(err_buf, sizeof err_buf,
1914 "Invalid --outbuf setting -- specify N, L, or B.\n");
1915 return 0;
1916 }
1917 setvbuf(stdout, (char *)NULL, mode, 0);
1918 }
1919
1920 if (msgs2stderr) {
1921 /* Make stderr line buffered for better sharing of the stream. */
1922 fflush(stderr); /* Just in case... */
1923 setvbuf(stderr, (char *)NULL, _IOLBF, 0);
1924 }
1925 #endif
1926
1927 set_output_verbosity(verbose, DEFAULT_PRIORITY);
1928
1929 if (do_stats) {
1930 parse_output_words(info_words, info_levels,
1931 verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1932 }
1933
1934 #ifdef ICONV_OPTION
1935 if (iconv_opt && protect_args != 2) {
1936 if (!am_server && strcmp(iconv_opt, "-") == 0)
1937 iconv_opt = NULL;
1938 else
1939 need_unsorted_flist = 1;
1940 }
1941 if (refused_no_iconv && !iconv_opt) {
1942 create_refuse_error(refused_no_iconv);
1943 return 0;
1944 }
1945 #endif
1946
1947 if (fuzzy_basis > 1)
1948 fuzzy_basis = basis_dir_cnt + 1;
1949
1950 /* Don't let the client reset protect_args if it was already processed */
1951 if (orig_protect_args == 2 && am_server)
1952 protect_args = orig_protect_args;
1953
1954 if (protect_args == 1 && am_server)
1955 return 1;
1956
1957 *argv_p = argv = poptGetArgs(pc);
1958 *argc_p = argc = count_args(argv);
1959
1960 #ifndef SUPPORT_LINKS
1961 if (preserve_links && !am_sender) {
1962 snprintf(err_buf, sizeof err_buf,
1963 "symlinks are not supported on this %s\n",
1964 am_server ? "server" : "client");
1965 return 0;
1966 }
1967 #endif
1968
1969 #ifndef SUPPORT_HARD_LINKS
1970 if (preserve_hard_links) {
1971 snprintf(err_buf, sizeof err_buf,
1972 "hard links are not supported on this %s\n",
1973 am_server ? "server" : "client");
1974 return 0;
1975 }
1976 #endif
1977
1978 #ifdef SUPPORT_XATTRS
1979 if (am_root < 0 && preserve_xattrs > 1) {
1980 snprintf(err_buf, sizeof err_buf,
1981 "--fake-super conflicts with -XX\n");
1982 return 0;
1983 }
1984 #else
1985 if (am_root < 0) {
1986 snprintf(err_buf, sizeof err_buf,
1987 "--fake-super requires an rsync with extended attributes enabled\n");
1988 return 0;
1989 }
1990 #endif
1991
1992 if (block_size) {
1993 /* We may not know the real protocol_version at this point if this is the client
1994 * option parsing, but we still want to check it so that the client can specify
1995 * a --protocol=29 option with a larger block size. */
1996 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
1997
1998 if (block_size > max_blength) {
1999 snprintf(err_buf, sizeof err_buf,
2000 "--block-size=%lu is too large (max: %u)\n", block_size, max_blength);
2001 return 0;
2002 }
2003 }
2004
2005 if (write_batch && read_batch) {
2006 snprintf(err_buf, sizeof err_buf,
2007 "--write-batch and --read-batch can not be used together\n");
2008 return 0;
2009 }
2010 if (write_batch > 0 || read_batch) {
2011 if (am_server) {
2012 rprintf(FINFO,
2013 "ignoring --%s-batch option sent to server\n",
2014 write_batch ? "write" : "read");
2015 /* We don't actually exit_cleanup(), so that we can
2016 * still service older version clients that still send
2017 * batch args to server. */
2018 read_batch = write_batch = 0;
2019 batch_name = NULL;
2020 } else if (dry_run)
2021 write_batch = 0;
2022 } else if (write_batch < 0 && dry_run)
2023 write_batch = 0;
2024 if (read_batch && files_from) {
2025 snprintf(err_buf, sizeof err_buf,
2026 "--read-batch cannot be used with --files-from\n");
2027 return 0;
2028 }
2029 if (read_batch && remove_source_files) {
2030 snprintf(err_buf, sizeof err_buf,
2031 "--read-batch cannot be used with --remove-%s-files\n",
2032 remove_source_files == 1 ? "source" : "sent");
2033 return 0;
2034 }
2035 if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
2036 snprintf(err_buf, sizeof err_buf,
2037 "the batch-file name must be %d characters or less.\n",
2038 MAX_BATCH_NAME_LEN);
2039 return 0;
2040 }
2041
2042 if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
2043 snprintf(err_buf, sizeof err_buf,
2044 "the --temp-dir path is WAY too long.\n");
2045 return 0;
2046 }
2047
2048 if (max_delete < 0 && max_delete != INT_MIN) {
2049 /* Negative numbers are treated as "no deletions". */
2050 max_delete = 0;
2051 }
2052
2053 if (files_from) {
2054 if (recurse == 1) /* preserve recurse == 2 */
2055 recurse = 0;
2056 if (xfer_dirs < 0)
2057 xfer_dirs = 1;
2058 }
2059
2060 if (argc < 2 && !read_batch && !am_server)
2061 list_only |= 1;
2062
2063 if (xfer_dirs >= 4) {
2064 parse_filter_str(&filter_list, "- /*/*", rule_template(0), 0);
2065 recurse = xfer_dirs = 1;
2066 } else if (recurse)
2067 xfer_dirs = 1;
2068 else if (xfer_dirs < 0)
2069 xfer_dirs = list_only ? 1 : 0;
2070
2071 if (relative_paths < 0)
2072 relative_paths = files_from? 1 : 0;
2073 if (!relative_paths)
2074 implied_dirs = 0;
2075
2076 if (delete_before + !!delete_during + delete_after > 1) {
2077 snprintf(err_buf, sizeof err_buf,
2078 "You may not combine multiple --delete-WHEN options.\n");
2079 return 0;
2080 }
2081 if (delete_before || delete_during || delete_after)
2082 delete_mode = 1;
2083 else if (delete_mode || delete_excluded) {
2084 /* Only choose now between before & during if one is refused. */
2085 if (refused_delete_before) {
2086 if (!refused_delete_during)
2087 delete_during = 1;
2088 else {
2089 create_refuse_error(refused_delete_before);
2090 return 0;
2091 }
2092 } else if (refused_delete_during)
2093 delete_before = 1;
2094 delete_mode = 1;
2095 }
2096 if (!xfer_dirs && delete_mode) {
2097 snprintf(err_buf, sizeof err_buf,
2098 "--delete does not work without --recursive (-r) or --dirs (-d).\n");
2099 return 0;
2100 }
2101
2102 if (missing_args == 3) /* simplify if both options were specified */
2103 missing_args = 2;
2104 if (refused_delete && (delete_mode || missing_args == 2)) {
2105 create_refuse_error(refused_delete);
2106 return 0;
2107 }
2108
2109 if (remove_source_files) {
2110 /* We only want to infer this refusal of --remove-source-files
2111 * via the refusal of "delete", not any of the "delete-FOO"
2112 * options. */
2113 if (refused_delete && am_sender) {
2114 create_refuse_error(refused_delete);
2115 return 0;
2116 }
2117 need_messages_from_generator = 1;
2118 }
2119
2120 if (munge_symlinks && !am_daemon) {
2121 STRUCT_STAT st;
2122 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
2123 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
2124 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
2125 rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
2126 prefix);
2127 exit_cleanup(RERR_UNSUPPORTED);
2128 }
2129 }
2130
2131 if (sanitize_paths) {
2132 int i;
2133 for (i = argc; i-- > 0; )
2134 argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
2135 if (tmpdir)
2136 tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
2137 if (backup_dir)
2138 backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
2139 }
2140 if (daemon_filter_list.head && !am_sender) {
2141 filter_rule_list *elp = &daemon_filter_list;
2142 if (tmpdir) {
2143 char *dir;
2144 if (!*tmpdir)
2145 goto options_rejected;
2146 dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
2147 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2148 if (check_filter(elp, FLOG, dir, 1) < 0)
2149 goto options_rejected;
2150 }
2151 if (backup_dir) {
2152 char *dir;
2153 if (!*backup_dir)
2154 goto options_rejected;
2155 dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
2156 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2157 if (check_filter(elp, FLOG, dir, 1) < 0)
2158 goto options_rejected;
2159 }
2160 }
2161
2162 if (!backup_suffix)
2163 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
2164 backup_suffix_len = strlen(backup_suffix);
2165 if (strchr(backup_suffix, '/') != NULL) {
2166 snprintf(err_buf, sizeof err_buf,
2167 "--suffix cannot contain slashes: %s\n",
2168 backup_suffix);
2169 return 0;
2170 }
2171 if (backup_dir) {
2172 size_t len;
2173 while (*backup_dir == '.' && backup_dir[1] == '/')
2174 backup_dir += 2;
2175 if (*backup_dir == '.' && backup_dir[1] == '\0')
2176 backup_dir++;
2177 len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
2178 if (len > sizeof backup_dir_buf - 128) {
2179 snprintf(err_buf, sizeof err_buf,
2180 "the --backup-dir path is WAY too long.\n");
2181 return 0;
2182 }
2183 backup_dir_len = (int)len;
2184 if (!backup_dir_len) {
2185 backup_dir_len = -1;
2186 backup_dir = NULL;
2187 } else if (backup_dir_buf[backup_dir_len - 1] != '/') {
2188 backup_dir_buf[backup_dir_len++] = '/';
2189 backup_dir_buf[backup_dir_len] = '\0';
2190 }
2191 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
2192 }
2193 if (backup_dir) {
2194 /* No need for a suffix or a protect rule. */
2195 } else if (!backup_suffix_len && (!am_server || !am_sender)) {
2196 snprintf(err_buf, sizeof err_buf,
2197 "--suffix cannot be empty %s\n", backup_dir_len < 0
2198 ? "when --backup-dir is the same as the dest dir"
2199 : "without a --backup-dir");
2200 return 0;
2201 } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
2202 snprintf(backup_dir_buf, sizeof backup_dir_buf,
2203 "P *%s", backup_suffix);
2204 parse_filter_str(&filter_list, backup_dir_buf, rule_template(0), 0);
2205 }
2206
2207 if (preserve_times) {
2208 preserve_times = PRESERVE_FILE_TIMES;
2209 if (!omit_dir_times)
2210 preserve_times |= PRESERVE_DIR_TIMES;
2211 #ifdef CAN_SET_SYMLINK_TIMES
2212 if (!omit_link_times)
2213 preserve_times |= PRESERVE_LINK_TIMES;
2214 #endif
2215 }
2216
2217 if (make_backups && !backup_dir) {
2218 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
2219 preserve_times &= ~PRESERVE_DIR_TIMES;
2220 }
2221
2222 if (stdout_format) {
2223 if (am_server && log_format_has(stdout_format, 'I'))
2224 stdout_format_has_i = 2;
2225 else if (log_format_has(stdout_format, 'i'))
2226 stdout_format_has_i = itemize_changes | 1;
2227 if (!log_format_has(stdout_format, 'b')
2228 && !log_format_has(stdout_format, 'c')
2229 && !log_format_has(stdout_format, 'C'))
2230 log_before_transfer = !am_server;
2231 } else if (itemize_changes) {
2232 stdout_format = "%i %n%L";
2233 stdout_format_has_i = itemize_changes;
2234 log_before_transfer = !am_server;
2235 }
2236
2237 if (do_progress && !am_server) {
2238 if (!log_before_transfer && INFO_EQ(NAME, 0))
2239 parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
2240 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
2241 }
2242
2243 if (dry_run)
2244 do_xfers = 0;
2245
2246 set_io_timeout(io_timeout);
2247
2248 if (INFO_GTE(NAME, 1) && !stdout_format) {
2249 stdout_format = "%n%L";
2250 log_before_transfer = !am_server;
2251 }
2252 if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
2253 stdout_format_has_o_or_i = 1;
2254
2255 if (logfile_name && !am_daemon) {
2256 if (!logfile_format) {
2257 logfile_format = "%i %n%L";
2258 logfile_format_has_i = logfile_format_has_o_or_i = 1;
2259 } else {
2260 if (log_format_has(logfile_format, 'i'))
2261 logfile_format_has_i = 1;
2262 if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
2263 logfile_format_has_o_or_i = 1;
2264 }
2265 log_init(0);
2266 } else if (!am_daemon)
2267 logfile_format = NULL;
2268
2269 if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
2270 bwlimit = daemon_bwlimit;
2271 if (bwlimit) {
2272 bwlimit_writemax = (size_t)bwlimit * 128;
2273 if (bwlimit_writemax < 512)
2274 bwlimit_writemax = 512;
2275 }
2276
2277 if (append_mode) {
2278 if (whole_file > 0) {
2279 snprintf(err_buf, sizeof err_buf,
2280 "--append cannot be used with --whole-file\n");
2281 return 0;
2282 }
2283 if (refused_inplace) {
2284 create_refuse_error(refused_inplace);
2285 return 0;
2286 }
2287 inplace = 1;
2288 }
2289
2290 if (write_devices) {
2291 if (refused_inplace) {
2292 create_refuse_error(refused_inplace);
2293 return 0;
2294 }
2295 inplace = 1;
2296 }
2297
2298 if (delay_updates && !partial_dir)
2299 partial_dir = tmp_partialdir;
2300
2301 if (inplace) {
2302 #ifdef HAVE_FTRUNCATE
2303 if (partial_dir) {
2304 snprintf(err_buf, sizeof err_buf,
2305 "--%s cannot be used with --%s\n",
2306 append_mode ? "append" : "inplace",
2307 delay_updates ? "delay-updates" : "partial-dir");
2308 return 0;
2309 }
2310 /* --inplace implies --partial for refusal purposes, but we
2311 * clear the keep_partial flag for internal logic purposes. */
2312 if (refused_partial) {
2313 create_refuse_error(refused_partial);
2314 return 0;
2315 }
2316 keep_partial = 0;
2317 #else
2318 snprintf(err_buf, sizeof err_buf,
2319 "--%s is not supported on this %s\n",
2320 append_mode ? "append" : "inplace",
2321 am_server ? "server" : "client");
2322 return 0;
2323 #endif
2324 } else {
2325 if (keep_partial && !partial_dir && !am_server) {
2326 if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2327 partial_dir = strdup(arg);
2328 }
2329 if (partial_dir) {
2330 if (*partial_dir)
2331 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2332 if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2333 partial_dir = NULL;
2334 if (!partial_dir && refused_partial) {
2335 create_refuse_error(refused_partial);
2336 return 0;
2337 }
2338 keep_partial = 1;
2339 }
2340 }
2341
2342 if (files_from) {
2343 char *h, *p;
2344 int q;
2345 if (argc > 2 || (!am_daemon && !am_server && argc == 1)) {
2346 usage(FERROR);
2347 exit_cleanup(RERR_SYNTAX);
2348 }
2349 if (strcmp(files_from, "-") == 0) {
2350 filesfrom_fd = 0;
2351 if (am_server)
2352 filesfrom_host = ""; /* reading from socket */
2353 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2354 if (am_server) {
2355 snprintf(err_buf, sizeof err_buf,
2356 "The --files-from sent to the server cannot specify a host.\n");
2357 return 0;
2358 }
2359 files_from = p;
2360 filesfrom_host = h;
2361 if (strcmp(files_from, "-") == 0) {
2362 snprintf(err_buf, sizeof err_buf,
2363 "Invalid --files-from remote filename\n");
2364 return 0;
2365 }
2366 } else {
2367 if (sanitize_paths)
2368 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2369 if (daemon_filter_list.head) {
2370 char *dir;
2371 if (!*files_from)
2372 goto options_rejected;
2373 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2374 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2375 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2376 goto options_rejected;
2377 }
2378 filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2379 if (filesfrom_fd < 0) {
2380 snprintf(err_buf, sizeof err_buf,
2381 "failed to open files-from file %s: %s\n",
2382 files_from, strerror(errno));
2383 return 0;
2384 }
2385 }
2386 }
2387
2388 am_starting_up = 0;
2389
2390 return 1;
2391
2392 options_rejected:
2393 snprintf(err_buf, sizeof err_buf,
2394 "Your options have been rejected by the server.\n");
2395 return 0;
2396 }
2397
2398
2399 /**
2400 * Construct a filtered list of options to pass through from the
2401 * client to the server.
2402 *
2403 * This involves setting options that will tell the server how to
2404 * behave, and also filtering out options that are processed only
2405 * locally.
2406 **/
2407 void server_options(char **args, int *argc_p)
2408 {
2409 static char argstr[64];
2410 int ac = *argc_p;
2411 uchar where;
2412 char *arg;
2413 int i, x;
2414
2415 /* This should always remain first on the server's command-line. */
2416 args[ac++] = "--server";
2417
2418 if (daemon_over_rsh > 0) {
2419 args[ac++] = "--daemon";
2420 *argc_p = ac;
2421 /* if we're passing --daemon, we're done */
2422 return;
2423 }
2424
2425 if (!am_sender)
2426 args[ac++] = "--sender";
2427
2428 x = 1;
2429 argstr[0] = '-';
2430
2431 if (protect_args)
2432 argstr[x++] = 's';
2433
2434 for (i = 0; i < verbose; i++)
2435 argstr[x++] = 'v';
2436
2437 if (quiet && msgs2stderr)
2438 argstr[x++] = 'q';
2439 if (make_backups)
2440 argstr[x++] = 'b';
2441 if (update_only)
2442 argstr[x++] = 'u';
2443 if (!do_xfers) /* Note: NOT "dry_run"! */
2444 argstr[x++] = 'n';
2445 if (preserve_links)
2446 argstr[x++] = 'l';
2447 if ((xfer_dirs >= 2 && xfer_dirs < 4)
2448 || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2449 argstr[x++] = 'd';
2450 if (am_sender) {
2451 if (keep_dirlinks)
2452 argstr[x++] = 'K';
2453 if (prune_empty_dirs)
2454 argstr[x++] = 'm';
2455 if (omit_dir_times)
2456 argstr[x++] = 'O';
2457 if (omit_link_times)
2458 argstr[x++] = 'J';
2459 if (fuzzy_basis) {
2460 argstr[x++] = 'y';
2461 if (fuzzy_basis > 1)
2462 argstr[x++] = 'y';
2463 }
2464 } else {
2465 if (copy_links)
2466 argstr[x++] = 'L';
2467 if (copy_dirlinks)
2468 argstr[x++] = 'k';
2469 }
2470
2471 if (whole_file > 0)
2472 argstr[x++] = 'W';
2473 /* We don't need to send --no-whole-file, because it's the
2474 * default for remote transfers, and in any case old versions
2475 * of rsync will not understand it. */
2476
2477 if (preserve_hard_links) {
2478 argstr[x++] = 'H';
2479 if (preserve_hard_links > 1)
2480 argstr[x++] = 'H';
2481 }
2482 if (preserve_uid)
2483 argstr[x++] = 'o';
2484 if (preserve_gid)
2485 argstr[x++] = 'g';
2486 if (preserve_devices) /* ignore preserve_specials here */
2487 argstr[x++] = 'D';
2488 if (preserve_times)
2489 argstr[x++] = 't';
2490 if (preserve_atimes) {
2491 argstr[x++] = 'U';
2492 if (preserve_atimes > 1)
2493 argstr[x++] = 'U';
2494 }
2495 if (preserve_perms)
2496 argstr[x++] = 'p';
2497 else if (preserve_executability && am_sender)
2498 argstr[x++] = 'E';
2499 #ifdef SUPPORT_ACLS
2500 if (preserve_acls)
2501 argstr[x++] = 'A';
2502 #endif
2503 #ifdef SUPPORT_XATTRS
2504 if (preserve_xattrs) {
2505 argstr[x++] = 'X';
2506 if (preserve_xattrs > 1)
2507 argstr[x++] = 'X';
2508 }
2509 #endif
2510 if (recurse)
2511 argstr[x++] = 'r';
2512 if (always_checksum)
2513 argstr[x++] = 'c';
2514 if (cvs_exclude)
2515 argstr[x++] = 'C';
2516 if (ignore_times)
2517 argstr[x++] = 'I';
2518 if (relative_paths)
2519 argstr[x++] = 'R';
2520 if (one_file_system) {
2521 argstr[x++] = 'x';
2522 if (one_file_system > 1)
2523 argstr[x++] = 'x';
2524 }
2525 if (sparse_files)
2526 argstr[x++] = 'S';
2527 if (do_compression == CPRES_ZLIB)
2528 argstr[x++] = 'z';
2529
2530 set_allow_inc_recurse();
2531
2532 /* We don't really know the actual protocol_version at this point,
2533 * but checking the pre-negotiated value allows the user to use a
2534 * --protocol=29 override to avoid the use of this -eFLAGS opt. */
2535 if (protocol_version >= 30) {
2536 /* Use "eFlags" alias so that cull_options doesn't think that these are no-arg option letters. */
2537 #define eFlags argstr
2538 /* We make use of the -e option to let the server know about
2539 * any pre-release protocol version && some behavior flags. */
2540 eFlags[x++] = 'e';
2541 #if SUBPROTOCOL_VERSION != 0
2542 if (protocol_version == PROTOCOL_VERSION) {
2543 x += snprintf(argstr+x, sizeof argstr - x,
2544 "%d.%d",
2545 PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2546 } else
2547 #endif
2548 eFlags[x++] = '.';
2549 if (allow_inc_recurse)
2550 eFlags[x++] = 'i';
2551 #ifdef CAN_SET_SYMLINK_TIMES
2552 eFlags[x++] = 'L'; /* symlink time-setting support */
2553 #endif
2554 #ifdef ICONV_OPTION
2555 eFlags[x++] = 's'; /* symlink iconv translation support */
2556 #endif
2557 eFlags[x++] = 'f'; /* flist I/O-error safety support */
2558 eFlags[x++] = 'x'; /* xattr hardlink optimization not desired */
2559 eFlags[x++] = 'C'; /* support checksum seed order fix */
2560 eFlags[x++] = 'I'; /* support inplace_partial behavior */
2561 eFlags[x++] = 'v'; /* use varint for flist & compat flags; negotiate checksum */
2562 /* NOTE: Avoid using 'V' -- it was the high bit of a write_byte() that became write_varint(). */
2563 #undef eFlags
2564 }
2565
2566 if (x >= (int)sizeof argstr) { /* Not possible... */
2567 rprintf(FERROR, "argstr overflow in server_options().\n");
2568 exit_cleanup(RERR_MALLOC);
2569 }
2570
2571 argstr[x] = '\0';
2572
2573 if (x > 1)
2574 args[ac++] = argstr;
2575
2576 #ifdef ICONV_OPTION
2577 if (iconv_opt) {
2578 char *set = strchr(iconv_opt, ',');
2579 if (set)
2580 set++;
2581 else
2582 set = iconv_opt;
2583 if (asprintf(&arg, "--iconv=%s", set) < 0)
2584 goto oom;
2585 args[ac++] = arg;
2586 }
2587 #endif
2588
2589 if (protect_args && !local_server) /* unprotected args stop here */
2590 args[ac++] = NULL;
2591
2592 if (list_only > 1)
2593 args[ac++] = "--list-only";
2594
2595 /* This makes sure that the remote rsync can handle deleting with -d
2596 * sans -r because the --no-r option was added at the same time. */
2597 if (xfer_dirs && !recurse && delete_mode && am_sender)
2598 args[ac++] = "--no-r";
2599
2600 if (do_compression && do_compression_level != CLVL_NOT_SPECIFIED) {
2601 if (asprintf(&arg, "--compress-level=%d", do_compression_level) < 0)
2602 goto oom;
2603 args[ac++] = arg;
2604 }
2605
2606 if (preserve_devices) {
2607 /* Note: sending "--devices" would not be backward-compatible. */
2608 if (!preserve_specials)
2609 args[ac++] = "--no-specials"; /* -D is already set. */
2610 } else if (preserve_specials)
2611 args[ac++] = "--specials";
2612
2613 /* The server side doesn't use our log-format, but in certain
2614 * circumstances they need to know a little about the option. */
2615 if (stdout_format && am_sender) {
2616 /* Use --log-format, not --out-format, for compatibility. */
2617 if (stdout_format_has_i > 1)
2618 args[ac++] = "--log-format=%i%I";
2619 else if (stdout_format_has_i)
2620 args[ac++] = "--log-format=%i";
2621 else if (stdout_format_has_o_or_i)
2622 args[ac++] = "--log-format=%o";
2623 else if (!verbose)
2624 args[ac++] = "--log-format=X";
2625 }
2626
2627 if (block_size) {
2628 if (asprintf(&arg, "-B%lu", block_size) < 0)
2629 goto oom;
2630 args[ac++] = arg;
2631 }
2632
2633 if (io_timeout) {
2634 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2635 goto oom;
2636 args[ac++] = arg;
2637 }
2638
2639 if (bwlimit) {
2640 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2641 goto oom;
2642 args[ac++] = arg;
2643 }
2644
2645 if (backup_dir) {
2646 args[ac++] = "--backup-dir";
2647 args[ac++] = backup_dir;
2648 }
2649
2650 /* Only send --suffix if it specifies a non-default value. */
2651 if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2652 /* We use the following syntax to avoid weirdness with '~'. */
2653 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2654 goto oom;
2655 args[ac++] = arg;
2656 }
2657
2658 if (checksum_choice) {
2659 if (asprintf(&arg, "--checksum-choice=%s", checksum_choice) < 0)
2660 goto oom;
2661 args[ac++] = arg;
2662 }
2663
2664 if (do_compression == CPRES_ZLIBX)
2665 args[ac++] = "--new-compress";
2666 else if (compress_choice && do_compression == CPRES_ZLIB)
2667 args[ac++] = "--old-compress";
2668 else if (compress_choice) {
2669 if (asprintf(&arg, "--compress-choice=%s", compress_choice) < 0)
2670 goto oom;
2671 args[ac++] = arg;
2672 }
2673
2674 if (am_sender) {
2675 if (max_delete > 0) {
2676 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2677 goto oom;
2678 args[ac++] = arg;
2679 } else if (max_delete == 0)
2680 args[ac++] = "--max-delete=-1";
2681 if (min_size >= 0) {
2682 args[ac++] = "--min-size";
2683 args[ac++] = min_size_arg;
2684 }
2685 if (max_size >= 0) {
2686 args[ac++] = "--max-size";
2687 args[ac++] = max_size_arg;
2688 }
2689 if (delete_before)
2690 args[ac++] = "--delete-before";
2691 else if (delete_during == 2)
2692 args[ac++] = "--delete-delay";
2693 else if (delete_during)
2694 args[ac++] = "--delete-during";
2695 else if (delete_after)
2696 args[ac++] = "--delete-after";
2697 else if (delete_mode && !delete_excluded)
2698 args[ac++] = "--delete";
2699 if (delete_excluded)
2700 args[ac++] = "--delete-excluded";
2701 if (force_delete)
2702 args[ac++] = "--force";
2703 if (write_batch < 0)
2704 args[ac++] = "--only-write-batch=X";
2705 if (am_root > 1)
2706 args[ac++] = "--super";
2707 if (size_only)
2708 args[ac++] = "--size-only";
2709 if (do_stats)
2710 args[ac++] = "--stats";
2711 } else {
2712 if (skip_compress) {
2713 if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2714 goto oom;
2715 args[ac++] = arg;
2716 }
2717 }
2718
2719 /* --delete-missing-args needs the cooperation of both sides, but
2720 * the sender can handle --ignore-missing-args by itself. */
2721 if (missing_args == 2)
2722 args[ac++] = "--delete-missing-args";
2723 else if (missing_args == 1 && !am_sender)
2724 args[ac++] = "--ignore-missing-args";
2725
2726 if (modify_window_set && am_sender) {
2727 char *fmt = modify_window < 0 ? "-@%d" : "--modify-window=%d";
2728 if (asprintf(&arg, fmt, modify_window) < 0)
2729 goto oom;
2730 args[ac++] = arg;
2731 }
2732
2733 if (checksum_seed) {
2734 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2735 goto oom;
2736 args[ac++] = arg;
2737 }
2738
2739 if (partial_dir && am_sender) {
2740 if (partial_dir != tmp_partialdir) {
2741 args[ac++] = "--partial-dir";
2742 args[ac++] = partial_dir;
2743 }
2744 if (delay_updates)
2745 args[ac++] = "--delay-updates";
2746 } else if (keep_partial && am_sender)
2747 args[ac++] = "--partial";
2748
2749 if (ignore_errors)
2750 args[ac++] = "--ignore-errors";
2751
2752 if (copy_unsafe_links)
2753 args[ac++] = "--copy-unsafe-links";
2754
2755 if (safe_symlinks)
2756 args[ac++] = "--safe-links";
2757
2758 if (numeric_ids)
2759 args[ac++] = "--numeric-ids";
2760
2761 if (use_qsort)
2762 args[ac++] = "--use-qsort";
2763
2764 if (am_sender) {
2765 if (usermap) {
2766 if (asprintf(&arg, "--usermap=%s", usermap) < 0)
2767 goto oom;
2768 args[ac++] = arg;
2769 }
2770
2771 if (groupmap) {
2772 if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
2773 goto oom;
2774 args[ac++] = arg;
2775 }
2776
2777 if (ignore_existing)
2778 args[ac++] = "--ignore-existing";
2779
2780 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2781 if (ignore_non_existing)
2782 args[ac++] = "--existing";
2783
2784 if (tmpdir) {
2785 args[ac++] = "--temp-dir";
2786 args[ac++] = tmpdir;
2787 }
2788
2789 if (basis_dir[0]) {
2790 /* the server only needs this option if it is not the sender,
2791 * and it may be an older version that doesn't know this
2792 * option, so don't send it if client is the sender.
2793 */
2794 for (i = 0; i < basis_dir_cnt; i++) {
2795 args[ac++] = alt_dest_opt(0);
2796 args[ac++] = basis_dir[i];
2797 }
2798 }
2799 }
2800
2801 /* What flags do we need to send to the other side? */
2802 where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2803 arg = make_output_option(info_words, info_levels, where);
2804 if (arg)
2805 args[ac++] = arg;
2806
2807 if (append_mode) {
2808 if (append_mode > 1)
2809 args[ac++] = "--append";
2810 args[ac++] = "--append";
2811 } else if (inplace)
2812 args[ac++] = "--inplace";
2813
2814 if (files_from && (!am_sender || filesfrom_host)) {
2815 if (filesfrom_host) {
2816 args[ac++] = "--files-from";
2817 args[ac++] = files_from;
2818 if (eol_nulls)
2819 args[ac++] = "--from0";
2820 } else {
2821 args[ac++] = "--files-from=-";
2822 args[ac++] = "--from0";
2823 }
2824 if (!relative_paths)
2825 args[ac++] = "--no-relative";
2826 }
2827 /* It's OK that this checks the upper-bound of the protocol_version. */
2828 if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2829 args[ac++] = "--no-implied-dirs";
2830
2831 if (write_devices && am_sender)
2832 args[ac++] = "--write-devices";
2833
2834 if (remove_source_files == 1)
2835 args[ac++] = "--remove-source-files";
2836 else if (remove_source_files)
2837 args[ac++] = "--remove-sent-files";
2838
2839 if (preallocate_files && am_sender)
2840 args[ac++] = "--preallocate";
2841
2842 if (open_noatime && preserve_atimes <= 1)
2843 args[ac++] = "--open-noatime";
2844
2845 if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2846 rprintf(FERROR, "argc overflow in server_options().\n");
2847 exit_cleanup(RERR_MALLOC);
2848 }
2849
2850 if (remote_option_cnt) {
2851 int j;
2852 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2853 rprintf(FERROR, "too many remote options specified.\n");
2854 exit_cleanup(RERR_SYNTAX);
2855 }
2856 for (j = 1; j <= remote_option_cnt; j++)
2857 args[ac++] = (char*)remote_options[j];
2858 }
2859
2860 *argc_p = ac;
2861 return;
2862
2863 oom:
2864 out_of_memory("server_options");
2865 }
2866
2867 /* If str points to a valid hostspec, return allocated memory containing the
2868 * [USER@]HOST part of the string, and set the path_start_ptr to the part of
2869 * the string after the host part. Otherwise, return NULL. If port_ptr is
2870 * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
2871 * *port_ptr if a port number is found. Note that IPv6 IPs will have their
2872 * (required for parsing) [ and ] chars elided from the returned string. */
2873 static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
2874 {
2875 char *s, *host_start = str;
2876 int hostlen = 0, userlen = 0;
2877 char *ret;
2878
2879 for (s = str; ; s++) {
2880 if (!*s) {
2881 /* It is only OK if we run out of string with rsync:// */
2882 if (!port_ptr)
2883 return NULL;
2884 if (!hostlen)
2885 hostlen = s - host_start;
2886 break;
2887 }
2888 if (*s == ':' || *s == '/') {
2889 if (!hostlen)
2890 hostlen = s - host_start;
2891 if (*s++ == '/') {
2892 if (!port_ptr)
2893 return NULL;
2894 } else if (port_ptr) {
2895 *port_ptr = atoi(s);
2896 while (isDigit(s)) s++;
2897 if (*s && *s++ != '/')
2898 return NULL;
2899 }
2900 break;
2901 }
2902 if (*s == '@') {
2903 userlen = s - str + 1;
2904 host_start = s + 1;
2905 } else if (*s == '[') {
2906 if (s != host_start++)
2907 return NULL;
2908 while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
2909 hostlen = s - host_start;
2910 if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
2911 return NULL;
2912 }
2913 }
2914
2915 *path_start_ptr = s;
2916 ret = new_array(char, userlen + hostlen + 1);
2917 if (userlen)
2918 strlcpy(ret, str, userlen + 1);
2919 strlcpy(ret + userlen, host_start, hostlen + 1);
2920 return ret;
2921 }
2922
2923 /* Look for a HOST specification of the form "HOST:PATH", "HOST::PATH", or
2924 * "rsync://HOST:PORT/PATH". If found, *host_ptr will be set to some allocated
2925 * memory with the HOST. If a daemon-accessing spec was specified, the value
2926 * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2927 * 0. The return value is a pointer to the PATH. Note that the HOST spec can
2928 * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2929 * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2930 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2931 {
2932 char *path;
2933
2934 if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2935 *host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
2936 if (*host_ptr) {
2937 if (!*port_ptr)
2938 *port_ptr = -1; /* -1 indicates they want the default */
2939 return path;
2940 }
2941 }
2942
2943 *host_ptr = parse_hostspec(s, &path, NULL);
2944 if (!*host_ptr)
2945 return NULL;
2946
2947 if (*path == ':') {
2948 if (port_ptr && !*port_ptr)
2949 *port_ptr = -1;
2950 return path + 1;
2951 }
2952 if (port_ptr)
2953 *port_ptr = 0;
2954
2955 return path;
2956 }
Mirror of https://github.com/WayneD/rsync.git