Added a debug-helping option, --msgs2stderr, than should help all
[rsync.git] / options.c
1 /*
2  * Command-line (and received via daemon-socket) option parsing.
3  *
4  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
5  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
6  * Copyright (C) 2002-2008 Wayne Davison
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with this program; if not, visit the http://fsf.org website.
20  */
21
22 #include "rsync.h"
23 #include "ifuncs.h"
24 #include <popt.h>
25 #include "zlib/zlib.h"
26
27 extern int module_id;
28 extern int local_server;
29 extern int sanitize_paths;
30 extern int daemon_over_rsh;
31 extern unsigned int module_dirlen;
32 extern struct filter_list_struct filter_list;
33 extern struct filter_list_struct daemon_filter_list;
34
35 int make_backups = 0;
36
37 /**
38  * If 1, send the whole file as literal data rather than trying to
39  * create an incremental diff.
40  *
41  * If -1, then look at whether we're local or remote and go by that.
42  *
43  * @sa disable_deltas_p()
44  **/
45 int whole_file = -1;
46
47 int append_mode = 0;
48 int keep_dirlinks = 0;
49 int copy_dirlinks = 0;
50 int copy_links = 0;
51 int preserve_links = 0;
52 int preserve_hard_links = 0;
53 int preserve_acls = 0;
54 int preserve_xattrs = 0;
55 int preserve_perms = 0;
56 int preserve_executability = 0;
57 int preserve_devices = 0;
58 int preserve_specials = 0;
59 int preserve_uid = 0;
60 int preserve_gid = 0;
61 int preserve_times = 0;
62 int update_only = 0;
63 int cvs_exclude = 0;
64 int dry_run = 0;
65 int do_xfers = 1;
66 int ignore_times = 0;
67 int delete_mode = 0;
68 int delete_during = 0;
69 int delete_before = 0;
70 int delete_after = 0;
71 int delete_excluded = 0;
72 int remove_source_files = 0;
73 int one_file_system = 0;
74 int protocol_version = PROTOCOL_VERSION;
75 int sparse_files = 0;
76 int do_compression = 0;
77 int def_compress_level = Z_DEFAULT_COMPRESSION;
78 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
79 int am_server = 0;
80 int am_sender = 0;
81 int am_generator = 0;
82 int am_starting_up = 1;
83 int relative_paths = -1;
84 int implied_dirs = 1;
85 int numeric_ids = 0;
86 int msgs2stderr = 0;
87 int allow_8bit_chars = 0;
88 int force_delete = 0;
89 int io_timeout = 0;
90 int allowed_lull = 0;
91 int prune_empty_dirs = 0;
92 int use_qsort = 0;
93 char *files_from = NULL;
94 int filesfrom_fd = -1;
95 char *filesfrom_host = NULL;
96 int eol_nulls = 0;
97 int protect_args = 0;
98 int human_readable = 0;
99 int recurse = 0;
100 int allow_inc_recurse = 1;
101 int xfer_dirs = -1;
102 int am_daemon = 0;
103 int connect_timeout = 0;
104 int keep_partial = 0;
105 int safe_symlinks = 0;
106 int copy_unsafe_links = 0;
107 int size_only = 0;
108 int daemon_bwlimit = 0;
109 int bwlimit = 0;
110 int fuzzy_basis = 0;
111 size_t bwlimit_writemax = 0;
112 int ignore_existing = 0;
113 int ignore_non_existing = 0;
114 int need_messages_from_generator = 0;
115 int max_delete = INT_MIN;
116 OFF_T max_size = 0;
117 OFF_T min_size = 0;
118 int ignore_errors = 0;
119 int modify_window = 0;
120 int blocking_io = -1;
121 int checksum_seed = 0;
122 int inplace = 0;
123 int delay_updates = 0;
124 long block_size = 0; /* "long" because popt can't set an int32. */
125 char *skip_compress = NULL;
126
127 /** Network address family. **/
128 int default_af_hint
129 #ifdef INET6
130         = 0;            /* Any protocol */
131 #else
132         = AF_INET;      /* Must use IPv4 */
133 # ifdef AF_INET6
134 #  undef AF_INET6
135 # endif
136 # define AF_INET6 AF_INET /* make -6 option a no-op */
137 #endif
138
139 /** Do not go into the background when run as --daemon.  Good
140  * for debugging and required for running as a service on W32,
141  * or under Unix process-monitors. **/
142 int no_detach
143 #if defined _WIN32 || defined __WIN32__
144         = 1;
145 #else
146         = 0;
147 #endif
148
149 int write_batch = 0;
150 int read_batch = 0;
151 int backup_dir_len = 0;
152 int backup_suffix_len;
153 unsigned int backup_dir_remainder;
154
155 char *backup_suffix = NULL;
156 char *tmpdir = NULL;
157 char *partial_dir = NULL;
158 char *basis_dir[MAX_BASIS_DIRS+1];
159 char *config_file = NULL;
160 char *shell_cmd = NULL;
161 char *logfile_name = NULL;
162 char *logfile_format = NULL;
163 char *stdout_format = NULL;
164 char *password_file = NULL;
165 char *rsync_path = RSYNC_PATH;
166 char *backup_dir = NULL;
167 char backup_dir_buf[MAXPATHLEN];
168 char *sockopts = NULL;
169 int rsync_port = 0;
170 int compare_dest = 0;
171 int copy_dest = 0;
172 int link_dest = 0;
173 int basis_dir_cnt = 0;
174 char *dest_option = NULL;
175
176 static int remote_option_alloc = 0;
177 int remote_option_cnt = 0;
178 const char **remote_options = NULL;
179
180 int quiet = 0;
181 int output_motd = 1;
182 int log_before_transfer = 0;
183 int stdout_format_has_i = 0;
184 int stdout_format_has_o_or_i = 0;
185 int logfile_format_has_i = 0;
186 int logfile_format_has_o_or_i = 0;
187 int always_checksum = 0;
188 int list_only = 0;
189
190 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
191 char *batch_name = NULL;
192
193 int need_unsorted_flist = 0;
194 #ifdef ICONV_OPTION
195 char *iconv_opt = ICONV_OPTION;
196 #endif
197
198 struct chmod_mode_struct *chmod_modes = NULL;
199
200 static const char *debug_verbosity[] = {
201         /*0*/ NULL,
202         /*1*/ NULL,
203         /*2*/ "bind,cmd,deltasum,connect,del,dup,filter,flist",
204         /*3*/ "acl,backup,deltasum2,del2,exit,filter2,flist2,fuzzy,genr,own,recv,send,time",
205         /*4*/ "cmd2,deltasum3,del3,exit2,flist3,iconv,own2,proto,time2",
206         /*5*/ "chdir,deltasum4,flist4,fuzzy2,hlink",
207 };
208
209 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
210
211 static const char *info_verbosity[1+MAX_VERBOSITY] = {
212         /*0*/ NULL,
213         /*1*/ "copy,del,flist,misc,name,stats,symsafe",
214         /*2*/ "backup,misc2,mount,name2,remove,skip",
215 };
216
217 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
218
219 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
220
221 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
222 #define HELP_PRIORITY 1         /* The help output uses this level. */
223 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
224 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
225
226 #define W_CLI (1<<0)    /* client side */
227 #define W_SRV (1<<1)    /* server side */
228 #define W_SND (1<<2)    /* sending side */
229 #define W_REC (1<<3)    /* receiving side */
230
231 struct output_struct {
232         char *name;     /* The name of the info/debug flag. */
233         char *help;     /* The description of the info/debug flag. */
234         uchar namelen;  /* The length of the name string. */
235         uchar flag;     /* The flag's value, for consistency check. */
236         uchar where;    /* Bits indicating where the flag is used. */
237         uchar priority; /* See *_PRIORITY defines. */
238 };
239
240 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
241
242 static struct output_struct info_words[COUNT_INFO+1] = {
243         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
244         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
245         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
246         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
247         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
248         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
249         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
250         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
251         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
252         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
253         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
254         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
255         { NULL, "--info", 0, 0, 0, 0 }
256 };
257
258 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
259
260 static struct output_struct debug_words[COUNT_DEBUG+1] = {
261         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
262         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
263         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
264         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
265         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events"),
266         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
267         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
268         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
269         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
270         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-2)"),
271         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
272         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
273         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
274         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
275         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions"),
276         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv (character conversion)"),
277         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
278         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
279         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
280         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
281         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
282         { NULL, "--debug", 0, 0, 0, 0 }
283 };
284
285 static int verbose = 0;
286 static int do_stats = 0;
287 static int do_progress = 0;
288 static int daemon_opt;   /* sets am_daemon after option error-reporting */
289 static int omit_dir_times = 0;
290 static int F_option_cnt = 0;
291 static int modify_window_set;
292 static int itemize_changes = 0;
293 static int refused_delete, refused_archive_part, refused_compress;
294 static int refused_partial, refused_progress, refused_delete_before;
295 static int refused_delete_during;
296 static int refused_inplace, refused_no_iconv;
297 static char *max_size_arg, *min_size_arg;
298 static char tmp_partialdir[] = ".~tmp~";
299
300 /** Local address to bind.  As a character string because it's
301  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
302  * address, or a hostname. **/
303 char *bind_address;
304
305 static void output_item_help(struct output_struct *words);
306
307 /* This constructs a string that represents all the options set for either
308  * the --info or --debug setting, skipping any implied options (by -v, etc.).
309  * This is used both when conveying the user's options to the server, and
310  * when the help output wants to tell the user what options are implied. */
311 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
312 {
313         char *str = words == info_words ? "--info=" : "--debug=";
314         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
315         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
316         char *buf;
317
318         memset(counts, 0, sizeof counts);
319
320         for (j = 0; words[j].name; j++) {
321                 if (words[j].flag != j) {
322                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
323                                 words == info_words ? "INFO_" : "DEBUG_",
324                                 words[j].name, words[j].flag, j);
325                         exit_cleanup(RERR_UNSUPPORTED);
326                 }
327                 if (!(words[j].where & where))
328                         continue;
329                 if (words[j].priority == DEFAULT_PRIORITY) {
330                         /* Implied items don't need to be mentioned. */
331                         skipped++;
332                         continue;
333                 }
334                 len += len ? 1 : strlen(str);
335                 len += strlen(words[j].name);
336                 len += levels[j] == 1 ? 0 : 1;
337
338                 if (words[j].priority == HELP_PRIORITY)
339                         continue; /* no abbreviating for help */
340
341                 assert(levels[j] <= MAX_OUT_LEVEL);
342                 if (++counts[levels[j]] > max) {
343                         /* Determine which level has the most items. */
344                         lev = levels[j];
345                         max = counts[lev];
346                 }
347         }
348
349         /* Sanity check the COUNT_* define against the length of the table. */
350         if (j != word_count) {
351                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
352                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
353                         j, word_count);
354                 exit_cleanup(RERR_UNSUPPORTED);
355         }
356
357         if (!len)
358                 return NULL;
359
360         len++;
361         if (!(buf = new_array(char, len)))
362                 out_of_memory("make_output_option");
363         pos = 0;
364
365         if (skipped || max < 5)
366                 lev = -1;
367         else {
368                 if (lev == 0)
369                         pos += snprintf(buf, len, "%sNONE", str);
370                 else if (lev == 1)
371                         pos += snprintf(buf, len, "%sALL", str);
372                 else
373                         pos += snprintf(buf, len, "%sALL%d", str, lev);
374         }
375
376         for (j = 0; words[j].name && pos < len; j++) {
377                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
378                         continue;
379                 if (pos)
380                         buf[pos++] = ',';
381                 else
382                         pos += strlcpy(buf+pos, str, len-pos);
383                 if (pos < len)
384                         pos += strlcpy(buf+pos, words[j].name, len-pos);
385                 /* Level 1 is implied by the name alone. */
386                 if (levels[j] != 1 && pos < len)
387                         buf[pos++] = '0' + levels[j];
388         }
389
390         buf[pos] = '\0';
391
392         return buf;
393 }
394
395 static void parse_output_words(struct output_struct *words, short *levels,
396                                const char *str, uchar priority)
397 {
398         const char *s;
399         int j, len, lev;
400
401         if (!str)
402                 return;
403
404         while (*str) {
405                 if ((s = strchr(str, ',')) != NULL)
406                         len = s++ - str;
407                 else
408                         len = strlen(str);
409                 while (len && isDigit(str+len-1))
410                         len--;
411                 lev = isDigit(str+len) ? atoi(str+len) : 1;
412                 if (lev > MAX_OUT_LEVEL)
413                         lev = MAX_OUT_LEVEL;
414                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
415                         output_item_help(words);
416                         exit_cleanup(0);
417                 }
418                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
419                         len = lev = 0;
420                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
421                         len = 0;
422                 for (j = 0; words[j].name; j++) {
423                         if (!len
424                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
425                                 if (priority >= words[j].priority) {
426                                         words[j].priority = priority;
427                                         levels[j] = lev;
428                                 }
429                                 if (len)
430                                         break;
431                         }
432                 }
433                 if (len && !words[j].name) {
434                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
435                                 words[j].help, len, str);
436                         exit_cleanup(RERR_SYNTAX);
437                 }
438                 if (!s)
439                         break;
440                 str = s;
441         }
442 }
443
444 /* Tell the user what all the info or debug flags mean. */
445 static void output_item_help(struct output_struct *words)
446 {
447         short *levels = words == info_words ? info_levels : debug_levels;
448         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
449         char buf[128], *opt, *fmt = "%-10s %s\n";
450         int j;
451
452         reset_output_levels();
453
454         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
455         rprintf(FINFO, "\n");
456         for (j = 0; words[j].name; j++)
457                 rprintf(FINFO, fmt, words[j].name, words[j].help);
458         rprintf(FINFO, "\n");
459
460         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
461                  words[j].help, MAX_OUT_LEVEL);
462         rprintf(FINFO, fmt, "ALL", buf);
463
464         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
465                  words[j].help);
466         rprintf(FINFO, fmt, "NONE", buf);
467
468         rprintf(FINFO, fmt, "HELP", "Output this help message");
469         rprintf(FINFO, "\n");
470         rprintf(FINFO, "Options added for each increase in verbose level:\n");
471
472         for (j = 1; j <= MAX_VERBOSITY; j++) {
473                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
474                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
475                 if (opt) {
476                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
477                         free(opt);
478                 }
479                 reset_output_levels();
480         }
481 }
482
483 /* The --verbose option now sets info+debug flags. */
484 static void set_output_verbosity(int level, uchar priority)
485 {
486         int j;
487
488         if (level > MAX_VERBOSITY)
489                 level = MAX_VERBOSITY;
490
491         for (j = 1; j <= level; j++) {
492                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
493                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
494         }
495 }
496
497 /* Limit the info+debug flag levels given a verbose-option level limit. */
498 void limit_output_verbosity(int level)
499 {
500         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
501         int j;
502
503         if (level > MAX_VERBOSITY)
504                 return;
505
506         memset(info_limits, 0, sizeof info_limits);
507         memset(debug_limits, 0, sizeof debug_limits);
508
509         /* Compute the level limits in the above arrays. */
510         for (j = 1; j <= level; j++) {
511                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
512                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
513         }
514
515         for (j = 0; j < COUNT_INFO; j++) {
516                 if (info_levels[j] > info_limits[j])
517                         info_levels[j] = info_limits[j];
518         }
519
520         for (j = 0; j < COUNT_DEBUG; j++) {
521                 if (debug_levels[j] > debug_limits[j])
522                         debug_levels[j] = debug_limits[j];
523         }
524 }
525
526 void reset_output_levels(void)
527 {
528         int j;
529
530         memset(info_levels, 0, sizeof info_levels);
531         memset(debug_levels, 0, sizeof debug_levels);
532
533         for (j = 0; j < COUNT_INFO; j++)
534                 info_words[j].priority = DEFAULT_PRIORITY;
535
536         for (j = 0; j < COUNT_DEBUG; j++)
537                 debug_words[j].priority = DEFAULT_PRIORITY;
538 }
539
540 void negate_output_levels(void)
541 {
542         int j;
543
544         for (j = 0; j < COUNT_INFO; j++)
545                 info_levels[j] *= -1;
546
547         for (j = 0; j < COUNT_DEBUG; j++)
548                 debug_levels[j] *= -1;
549 }
550
551 static void print_rsync_version(enum logcode f)
552 {
553         char *subprotocol = "";
554         char const *got_socketpair = "no ";
555         char const *have_inplace = "no ";
556         char const *hardlinks = "no ";
557         char const *symtimes = "no ";
558         char const *acls = "no ";
559         char const *xattrs = "no ";
560         char const *links = "no ";
561         char const *iconv = "no ";
562         char const *ipv6 = "no ";
563         STRUCT_STAT *dumstat;
564
565 #if SUBPROTOCOL_VERSION != 0
566         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
567 #endif
568 #ifdef HAVE_SOCKETPAIR
569         got_socketpair = "";
570 #endif
571 #ifdef HAVE_FTRUNCATE
572         have_inplace = "";
573 #endif
574 #ifdef SUPPORT_HARD_LINKS
575         hardlinks = "";
576 #endif
577 #ifdef SUPPORT_ACLS
578         acls = "";
579 #endif
580 #ifdef SUPPORT_XATTRS
581         xattrs = "";
582 #endif
583 #ifdef SUPPORT_LINKS
584         links = "";
585 #endif
586 #ifdef INET6
587         ipv6 = "";
588 #endif
589 #ifdef ICONV_OPTION
590         iconv = "";
591 #endif
592 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
593         symtimes = "";
594 #endif
595
596         rprintf(f, "%s  version %s  protocol version %d%s\n",
597                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
598         rprintf(f, "Copyright (C) 1996-2008 by Andrew Tridgell, Wayne Davison, and others.\n");
599         rprintf(f, "Web site: http://rsync.samba.org/\n");
600         rprintf(f, "Capabilities:\n");
601         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
602                 (int)(sizeof (OFF_T) * 8),
603                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
604                 (int)(sizeof (time_t) * 8),
605                 (int)(sizeof (int64) * 8));
606         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
607                 got_socketpair, hardlinks, links, ipv6, have_inplace);
608         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
609                 have_inplace, acls, xattrs, iconv, symtimes);
610
611 #ifdef MAINTAINER_MODE
612         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
613 #endif
614
615 #if SIZEOF_INT64 < 8
616         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
617 #endif
618         if (sizeof (int64) != SIZEOF_INT64) {
619                 rprintf(f,
620                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
621                         (int) SIZEOF_INT64, (int) sizeof (int64));
622         }
623
624         rprintf(f,"\n");
625         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
626         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
627         rprintf(f,"General Public Licence for details.\n");
628 }
629
630
631 void usage(enum logcode F)
632 {
633   print_rsync_version(F);
634
635   rprintf(F,"\n");
636   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
637   rprintf(F,"via a fast differencing algorithm.\n");
638
639   rprintf(F,"\n");
640   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
641   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
642   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
643   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
644   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
645   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
646   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
647   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
648   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
649   rprintf(F,"\n");
650   rprintf(F,"Options\n");
651   rprintf(F," -v, --verbose               increase verbosity\n");
652   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
653   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
654   rprintf(F," -q, --quiet                 suppress non-error messages\n");
655   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
656   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
657   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
658   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
659   rprintf(F," -r, --recursive             recurse into directories\n");
660   rprintf(F," -R, --relative              use relative path names\n");
661   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
662   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
663   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
664   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
665   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
666   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
667   rprintf(F,"     --append                append data onto shorter files\n");
668   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
669   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
670   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
671   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
672   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
673   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
674   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
675   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
676   rprintf(F," -H, --hard-links            preserve hard links\n");
677   rprintf(F," -p, --perms                 preserve permissions\n");
678   rprintf(F," -E, --executability         preserve the file's executability\n");
679   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
680 #ifdef SUPPORT_ACLS
681   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
682 #endif
683 #ifdef SUPPORT_XATTRS
684   rprintf(F," -X, --xattrs                preserve extended attributes\n");
685 #endif
686   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
687   rprintf(F," -g, --group                 preserve group\n");
688   rprintf(F,"     --devices               preserve device files (super-user only)\n");
689   rprintf(F,"     --specials              preserve special files\n");
690   rprintf(F," -D                          same as --devices --specials\n");
691   rprintf(F," -t, --times                 preserve modification times\n");
692   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
693   rprintf(F,"     --super                 receiver attempts super-user activities\n");
694 #ifdef SUPPORT_XATTRS
695   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
696 #endif
697   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
698   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
699   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
700   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
701   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
702   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
703   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
704   rprintf(F,"     --existing              skip creating new files on receiver\n");
705   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
706   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
707   rprintf(F,"     --del                   an alias for --delete-during\n");
708   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
709   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
710   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
711   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
712   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
713   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
714   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
715   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
716   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
717   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
718   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
719   rprintf(F,"     --partial               keep partially transferred files\n");
720   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
721   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
722   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
723   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
724   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
725   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
726   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
727   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
728   rprintf(F,"     --size-only             skip files that match in size\n");
729   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
730   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
731   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
732   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
733   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
734   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
735   rprintf(F," -z, --compress              compress file data during the transfer\n");
736   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
737   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
738   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
739   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
740   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
741   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
742   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
743   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
744   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
745   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
746   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
747   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
748   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
749   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
750   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
751   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
752   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
753   rprintf(F,"     --stats                 give some file-transfer stats\n");
754   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
755   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
756   rprintf(F,"     --progress              show progress during transfer\n");
757   rprintf(F," -P                          same as --partial --progress\n");
758   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
759   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
760   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
761   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
762   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
763   rprintf(F,"     --list-only             list the files instead of copying them\n");
764   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
765   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
766   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
767   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
768   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
769 #ifdef ICONV_OPTION
770   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
771 #endif
772   rprintf(F," -4, --ipv4                  prefer IPv4\n");
773   rprintf(F," -6, --ipv6                  prefer IPv6\n");
774   rprintf(F,"     --version               print version number\n");
775   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
776
777   rprintf(F,"\n");
778   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
779   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
780   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
781 }
782
783 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
784       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
785       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
786       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
787       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
788       OPT_SERVER, OPT_REFUSED_BASE = 9000};
789
790 static struct poptOption long_options[] = {
791   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
792   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
793   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
794   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
795   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
796   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
797   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
798   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
799   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
800   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
801   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
802   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
803   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
804   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
805   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
806   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
807   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
808   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
809   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
810   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
811   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
812   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
813   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
814   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
815   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
816   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
817   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
818   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
819   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
820   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
821   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
822   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
823   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
824   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
825   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
826   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
827   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
828   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
829   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
830   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
831   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
832   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
833   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
834   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
835   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
836   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
837   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
838   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
839   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
840   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
841   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
842   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
843   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
844   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
845   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
846   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
847   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
848   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
849   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
850   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
851   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
852   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
853   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
854   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
855   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
856   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
857   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
858   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
859   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
860   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
861   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
862   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
863   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
864   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
865   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
866   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
867   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
868   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
869   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
870   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
871   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
872   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
873   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
874   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
875   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
876   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
877   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
878   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
879   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
880   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
881   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
882   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
883   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
884   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
885   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
886   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
887   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
888   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
889   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
890   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
891   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
892   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
893   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
894   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
895   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
896   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
897   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
898   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
899   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
900   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
901   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
902   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
903   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
904   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
905   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
906   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
907   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
908   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
909   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
910   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
911   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
912   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
913   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
914   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
915   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
916   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
917   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
918   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
919   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
920   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
921   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
922   {"fuzzy",           'y', POPT_ARG_VAL,    &fuzzy_basis, 1, 0, 0 },
923   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
924   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
925   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
926   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
927   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
928   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
929   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
930   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
931   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
932   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
933   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
934   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
935   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
936   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
937   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
938   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
939   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
940   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
941   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
942   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
943   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
944   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
945   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
946   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
947   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
948   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
949   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
950   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
951   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
952   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
953   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
954   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
955   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
956   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
957   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
958   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
959   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
960   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
961   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
962   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
963   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
964   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
965   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
966   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
967   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
968   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
969   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
970   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
971   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
972   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
973 #ifdef ICONV_OPTION
974   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
975   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
976 #endif
977   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
978   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
979   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
980   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
981   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
982   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
983   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
984   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
985   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
986   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
987   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
988   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
989   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
990   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
991   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
992   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
993   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
994   /* All the following options switch us into daemon-mode option-parsing. */
995   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
996   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
997   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
998   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
999   {0,0,0,0, 0, 0, 0}
1000 };
1001
1002 static void daemon_usage(enum logcode F)
1003 {
1004   print_rsync_version(F);
1005
1006   rprintf(F,"\n");
1007   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1008   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1009   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
1010   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1011   rprintf(F,"     --no-detach             do not detach from the parent\n");
1012   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1013   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1014   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1015   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1016   rprintf(F," -v, --verbose               increase verbosity\n");
1017   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1018   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1019   rprintf(F,"     --help                  show this help screen\n");
1020
1021   rprintf(F,"\n");
1022   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1023   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1024 }
1025
1026 static struct poptOption long_daemon_options[] = {
1027   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1028   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1029   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1030   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1031   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1032   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1033   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1034   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1035   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1036   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1037   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1038   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1039   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1040   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1041   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1042   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1043   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1044   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1045   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1046   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1047   {0,0,0,0, 0, 0, 0}
1048 };
1049
1050
1051 static char err_buf[200];
1052
1053
1054 /**
1055  * Store the option error message, if any, so that we can log the
1056  * connection attempt (which requires parsing the options), and then
1057  * show the error later on.
1058  **/
1059 void option_error(void)
1060 {
1061         if (!err_buf[0]) {
1062                 strlcpy(err_buf, "Error parsing options: option may "
1063                         "be supported on client but not on server?\n",
1064                         sizeof err_buf);
1065         }
1066
1067         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1068         msleep(20);
1069 }
1070
1071
1072 /**
1073  * Tweak the option table to disable all options that the rsyncd.conf
1074  * file has told us to refuse.
1075  **/
1076 static void set_refuse_options(char *bp)
1077 {
1078         struct poptOption *op;
1079         char *cp, shortname[2];
1080         int is_wild, found_match;
1081
1082         shortname[1] = '\0';
1083
1084         while (1) {
1085                 while (*bp == ' ') bp++;
1086                 if (!*bp)
1087                         break;
1088                 if ((cp = strchr(bp, ' ')) != NULL)
1089                         *cp= '\0';
1090                 is_wild = strpbrk(bp, "*?[") != NULL;
1091                 found_match = 0;
1092                 for (op = long_options; ; op++) {
1093                         *shortname = op->shortName;
1094                         if (!op->longName && !*shortname)
1095                                 break;
1096                         if ((op->longName && wildmatch(bp, op->longName))
1097                             || (*shortname && wildmatch(bp, shortname))) {
1098                                 if (op->argInfo == POPT_ARG_VAL)
1099                                         op->argInfo = POPT_ARG_NONE;
1100                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1101                                 found_match = 1;
1102                                 /* These flags are set to let us easily check
1103                                  * an implied option later in the code. */
1104                                 switch (*shortname) {
1105                                 case 'r': case 'd': case 'l': case 'p':
1106                                 case 't': case 'g': case 'o': case 'D':
1107                                         refused_archive_part = op->val;
1108                                         break;
1109                                 case 'z':
1110                                         refused_compress = op->val;
1111                                         break;
1112                                 case '\0':
1113                                         if (wildmatch("delete", op->longName))
1114                                                 refused_delete = op->val;
1115                                         else if (wildmatch("delete-before", op->longName))
1116                                                 refused_delete_before = op->val;
1117                                         else if (wildmatch("delete-during", op->longName))
1118                                                 refused_delete_during = op->val;
1119                                         else if (wildmatch("partial", op->longName))
1120                                                 refused_partial = op->val;
1121                                         else if (wildmatch("progress", op->longName))
1122                                                 refused_progress = op->val;
1123                                         else if (wildmatch("inplace", op->longName))
1124                                                 refused_inplace = op->val;
1125                                         else if (wildmatch("no-iconv", op->longName))
1126                                                 refused_no_iconv = op->val;
1127                                         break;
1128                                 }
1129                                 if (!is_wild)
1130                                         break;
1131                         }
1132                 }
1133                 if (!found_match) {
1134                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
1135                                 bp);
1136                 }
1137                 if (!cp)
1138                         break;
1139                 *cp = ' ';
1140                 bp = cp + 1;
1141         }
1142 }
1143
1144
1145 static int count_args(const char **argv)
1146 {
1147         int i = 0;
1148
1149         if (argv) {
1150                 while (argv[i] != NULL)
1151                         i++;
1152         }
1153
1154         return i;
1155 }
1156
1157
1158 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1159 {
1160         int reps, mult, make_compatible = 0;
1161         const char *arg;
1162         OFF_T size = 1;
1163
1164         for (arg = *size_arg; isDigit(arg); arg++) {}
1165         if (*arg == '.')
1166                 for (arg++; isDigit(arg); arg++) {}
1167         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1168         case 'b': case 'B':
1169                 reps = 0;
1170                 break;
1171         case 'k': case 'K':
1172                 reps = 1;
1173                 break;
1174         case 'm': case 'M':
1175                 reps = 2;
1176                 break;
1177         case 'g': case 'G':
1178                 reps = 3;
1179                 break;
1180         default:
1181                 return -1;
1182         }
1183         if (*arg == 'b' || *arg == 'B')
1184                 mult = 1000, make_compatible = 1, arg++;
1185         else if (!*arg || *arg == '+' || *arg == '-')
1186                 mult = 1024;
1187         else if (strncasecmp(arg, "ib", 2) == 0)
1188                 mult = 1024, arg += 2;
1189         else
1190                 return -1;
1191         while (reps--)
1192                 size *= mult;
1193         size *= atof(*size_arg);
1194         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1195                 size += atoi(arg), make_compatible = 1, arg += 2;
1196         if (*arg)
1197                 return -1;
1198         if (size > 0 && make_compatible) {
1199                 /* We convert this manually because we may need %lld precision,
1200                  * and that's not a portable sprintf() escape. */
1201                 char buf[128], *s = buf + sizeof buf - 1;
1202                 OFF_T num = size;
1203                 *s = '\0';
1204                 while (num) {
1205                         *--s = (char)(num % 10) + '0';
1206                         num /= 10;
1207                 }
1208                 if (!(*size_arg = strdup(s)))
1209                         out_of_memory("parse_size_arg");
1210         }
1211         return size;
1212 }
1213
1214
1215 static void create_refuse_error(int which)
1216 {
1217         /* The "which" value is the index + OPT_REFUSED_BASE. */
1218         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1219         int n = snprintf(err_buf, sizeof err_buf,
1220                          "The server is configured to refuse --%s\n",
1221                          op->longName) - 1;
1222         if (op->shortName) {
1223                 snprintf(err_buf + n, sizeof err_buf - n,
1224                          " (-%c)\n", op->shortName);
1225         }
1226 }
1227
1228
1229 /**
1230  * Process command line arguments.  Called on both local and remote.
1231  *
1232  * @retval 1 if all options are OK; with globals set to appropriate
1233  * values
1234  *
1235  * @retval 0 on error, with err_buf containing an explanation
1236  **/
1237 int parse_arguments(int *argc_p, const char ***argv_p)
1238 {
1239         static poptContext pc;
1240         char *ref = lp_refuse_options(module_id);
1241         const char *arg, **argv = *argv_p;
1242         int argc = *argc_p;
1243         int opt;
1244
1245         if (ref && *ref)
1246                 set_refuse_options(ref);
1247         if (am_daemon) {
1248                 set_refuse_options("log-file*");
1249 #ifdef ICONV_OPTION
1250                 if (!*lp_charset(module_id))
1251                         set_refuse_options("iconv");
1252 #endif
1253         }
1254
1255 #ifdef ICONV_OPTION
1256         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1257                 iconv_opt = strdup(arg);
1258 #endif
1259
1260         /* TODO: Call poptReadDefaultConfig; handle errors. */
1261
1262         /* The context leaks in case of an error, but if there's a
1263          * problem we always exit anyhow. */
1264         if (pc)
1265                 poptFreeContext(pc);
1266         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1267         if (!am_server)
1268                 poptReadDefaultConfig(pc, 0);
1269
1270         while ((opt = poptGetNextOpt(pc)) != -1) {
1271                 /* most options are handled automatically by popt;
1272                  * only special cases are returned and listed here. */
1273
1274                 switch (opt) {
1275                 case OPT_VERSION:
1276                         print_rsync_version(FINFO);
1277                         exit_cleanup(0);
1278
1279                 case OPT_SERVER:
1280                         if (!am_server) {
1281                                 /* Disable popt aliases on the server side and
1282                                  * then start parsing the options again. */
1283                                 poptFreeContext(pc);
1284                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1285                                                     long_options, 0);
1286                                 am_server = 1;
1287                         }
1288 #ifdef ICONV_OPTION
1289                         iconv_opt = NULL;
1290 #endif
1291                         break;
1292
1293                 case OPT_SENDER:
1294                         if (!am_server) {
1295                                 usage(FERROR);
1296                                 exit_cleanup(RERR_SYNTAX);
1297                         }
1298                         am_sender = 1;
1299                         break;
1300
1301                 case OPT_DAEMON:
1302                         if (am_daemon) {
1303                                 strlcpy(err_buf,
1304                                         "Attempt to hack rsync thwarted!\n",
1305                                         sizeof err_buf);
1306                                 return 0;
1307                         }
1308 #ifdef ICONV_OPTION
1309                         iconv_opt = NULL;
1310 #endif
1311                         poptFreeContext(pc);
1312                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1313                                             long_daemon_options, 0);
1314                         while ((opt = poptGetNextOpt(pc)) != -1) {
1315                                 switch (opt) {
1316                                 case 'h':
1317                                         daemon_usage(FINFO);
1318                                         exit_cleanup(0);
1319
1320                                 case 'v':
1321                                         verbose++;
1322                                         break;
1323
1324                                 default:
1325                                         rprintf(FERROR,
1326                                             "rsync: %s: %s (in daemon mode)\n",
1327                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1328                                             poptStrerror(opt));
1329                                         goto daemon_error;
1330                                 }
1331                         }
1332
1333                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1334                                 snprintf(err_buf, sizeof err_buf,
1335                                          "the --temp-dir path is WAY too long.\n");
1336                                 return 0;
1337                         }
1338
1339                         if (!daemon_opt) {
1340                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1341                             daemon_error:
1342                                 rprintf(FERROR,
1343                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1344                                 exit_cleanup(RERR_SYNTAX);
1345                         }
1346
1347                         *argv_p = argv = poptGetArgs(pc);
1348                         *argc_p = argc = count_args(argv);
1349                         am_starting_up = 0;
1350                         daemon_opt = 0;
1351                         am_daemon = 1;
1352                         return 1;
1353
1354                 case OPT_MODIFY_WINDOW:
1355                         /* The value has already been set by popt, but
1356                          * we need to remember that we're using a
1357                          * non-default setting. */
1358                         modify_window_set = 1;
1359                         break;
1360
1361                 case OPT_FILTER:
1362                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1363                         break;
1364
1365                 case OPT_EXCLUDE:
1366                         parse_rule(&filter_list, poptGetOptArg(pc),
1367                                    0, XFLG_OLD_PREFIXES);
1368                         break;
1369
1370                 case OPT_INCLUDE:
1371                         parse_rule(&filter_list, poptGetOptArg(pc),
1372                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1373                         break;
1374
1375                 case OPT_EXCLUDE_FROM:
1376                 case OPT_INCLUDE_FROM:
1377                         arg = poptGetOptArg(pc);
1378                         if (sanitize_paths)
1379                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1380                         if (daemon_filter_list.head) {
1381                                 int rej;
1382                                 char *dir, *cp = strdup(arg);
1383                                 if (!cp)
1384                                         out_of_memory("parse_arguments");
1385                                 if (!*cp)
1386                                         goto options_rejected;
1387                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1388                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1389                                 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1390                                 free(cp);
1391                                 if (rej)
1392                                         goto options_rejected;
1393                         }
1394                         parse_filter_file(&filter_list, arg,
1395                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1396                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1397                         break;
1398
1399                 case 'a':
1400                         if (refused_archive_part) {
1401                                 create_refuse_error(refused_archive_part);
1402                                 return 0;
1403                         }
1404                         if (!recurse) /* preserve recurse == 2 */
1405                                 recurse = 1;
1406 #ifdef SUPPORT_LINKS
1407                         preserve_links = 1;
1408 #endif
1409                         preserve_perms = 1;
1410                         preserve_times = 2;
1411                         preserve_gid = 1;
1412                         preserve_uid = 1;
1413                         preserve_devices = 1;
1414                         preserve_specials = 1;
1415                         break;
1416
1417                 case 'D':
1418                         preserve_devices = preserve_specials = 1;
1419                         break;
1420
1421                 case OPT_NO_D:
1422                         preserve_devices = preserve_specials = 0;
1423                         break;
1424
1425                 case 'h':
1426                         human_readable++;
1427                         break;
1428
1429                 case 'H':
1430                         preserve_hard_links++;
1431                         break;
1432
1433                 case 'i':
1434                         itemize_changes++;
1435                         break;
1436
1437                 case 'v':
1438                         verbose++;
1439                         break;
1440
1441                 case 'q':
1442                         quiet++;
1443                         break;
1444
1445                 case 'x':
1446                         one_file_system++;
1447                         break;
1448
1449                 case 'F':
1450                         switch (++F_option_cnt) {
1451                         case 1:
1452                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1453                                 break;
1454                         case 2:
1455                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1456                                 break;
1457                         }
1458                         break;
1459
1460                 case 'P':
1461                         if (refused_partial || refused_progress) {
1462                                 create_refuse_error(refused_partial
1463                                     ? refused_partial : refused_progress);
1464                                 return 0;
1465                         }
1466                         do_progress = 1;
1467                         keep_partial = 1;
1468                         break;
1469
1470                 case 'z':
1471                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1472                          || def_compress_level > Z_BEST_COMPRESSION) {
1473                                 snprintf(err_buf, sizeof err_buf,
1474                                         "--compress-level value is invalid: %d\n",
1475                                         def_compress_level);
1476                                 return 0;
1477                         }
1478                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1479                         if (do_compression && refused_compress) {
1480                                 create_refuse_error(refused_compress);
1481                                 return 0;
1482                         }
1483                         break;
1484
1485                 case 'M':
1486                         arg = poptGetOptArg(pc);
1487                         if (*arg != '-') {
1488                                 snprintf(err_buf, sizeof err_buf,
1489                                         "Remote option must start with a dash: %s\n", arg);
1490                                 return 0;
1491                         }
1492                         if (remote_option_cnt+2 >= remote_option_alloc) {
1493                                 remote_option_alloc += 16;
1494                                 remote_options = realloc_array(remote_options,
1495                                                         const char *, remote_option_alloc);
1496                                 if (!remote_options)
1497                                         out_of_memory("parse_arguments");
1498                                 if (!remote_option_cnt)
1499                                         remote_options[0] = "ARG0";
1500                         }
1501                         remote_options[++remote_option_cnt] = arg;
1502                         remote_options[remote_option_cnt+1] = NULL;
1503                         break;
1504
1505                 case OPT_WRITE_BATCH:
1506                         /* batch_name is already set */
1507                         write_batch = 1;
1508                         break;
1509
1510                 case OPT_ONLY_WRITE_BATCH:
1511                         /* batch_name is already set */
1512                         write_batch = -1;
1513                         break;
1514
1515                 case OPT_READ_BATCH:
1516                         /* batch_name is already set */
1517                         read_batch = 1;
1518                         break;
1519
1520                 case OPT_NO_ICONV:
1521 #ifdef ICONV_OPTION
1522                         iconv_opt = NULL;
1523 #endif
1524                         break;
1525
1526                 case OPT_MAX_SIZE:
1527                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1528                                 snprintf(err_buf, sizeof err_buf,
1529                                         "--max-size value is invalid: %s\n",
1530                                         max_size_arg);
1531                                 return 0;
1532                         }
1533                         break;
1534
1535                 case OPT_MIN_SIZE:
1536                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1537                                 snprintf(err_buf, sizeof err_buf,
1538                                         "--min-size value is invalid: %s\n",
1539                                         min_size_arg);
1540                                 return 0;
1541                         }
1542                         break;
1543
1544                 case OPT_APPEND:
1545                         if (am_server)
1546                                 append_mode++;
1547                         else
1548                                 append_mode = 1;
1549                         break;
1550
1551                 case OPT_LINK_DEST:
1552 #ifdef SUPPORT_HARD_LINKS
1553                         link_dest = 1;
1554                         dest_option = "--link-dest";
1555                         goto set_dest_dir;
1556 #else
1557                         snprintf(err_buf, sizeof err_buf,
1558                                  "hard links are not supported on this %s\n",
1559                                  am_server ? "server" : "client");
1560                         return 0;
1561 #endif
1562
1563                 case OPT_COPY_DEST:
1564                         copy_dest = 1;
1565                         dest_option = "--copy-dest";
1566                         goto set_dest_dir;
1567
1568                 case OPT_COMPARE_DEST:
1569                         compare_dest = 1;
1570                         dest_option = "--compare-dest";
1571                 set_dest_dir:
1572                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1573                                 snprintf(err_buf, sizeof err_buf,
1574                                         "ERROR: at most %d %s args may be specified\n",
1575                                         MAX_BASIS_DIRS, dest_option);
1576                                 return 0;
1577                         }
1578                         /* We defer sanitizing this arg until we know what
1579                          * our destination directory is going to be. */
1580                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1581                         break;
1582
1583                 case OPT_CHMOD:
1584                         arg = poptGetOptArg(pc);
1585                         if (!parse_chmod(arg, &chmod_modes)) {
1586                                 snprintf(err_buf, sizeof err_buf,
1587                                     "Invalid argument passed to --chmod (%s)\n",
1588                                     arg);
1589                                 return 0;
1590                         }
1591                         break;
1592
1593                 case OPT_INFO:
1594                         arg = poptGetOptArg(pc);
1595                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1596                         break;
1597
1598                 case OPT_DEBUG:
1599                         arg = poptGetOptArg(pc);
1600                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1601                         break;
1602
1603                 case OPT_HELP:
1604                         usage(FINFO);
1605                         exit_cleanup(0);
1606
1607                 case 'A':
1608 #ifdef SUPPORT_ACLS
1609                         preserve_acls = 1;
1610                         preserve_perms = 1;
1611                         break;
1612 #else
1613                         /* FIXME: this should probably be ignored with a
1614                          * warning and then countermeasures taken to
1615                          * restrict group and other access in the presence
1616                          * of any more restrictive ACLs, but this is safe
1617                          * for now */
1618                         snprintf(err_buf,sizeof(err_buf),
1619                                  "ACLs are not supported on this %s\n",
1620                                  am_server ? "server" : "client");
1621                         return 0;
1622 #endif
1623
1624                 case 'X':
1625 #ifdef SUPPORT_XATTRS
1626                         preserve_xattrs++;
1627                         break;
1628 #else
1629                         snprintf(err_buf,sizeof(err_buf),
1630                                  "extended attributes are not supported on this %s\n",
1631                                  am_server ? "server" : "client");
1632                         return 0;
1633 #endif
1634
1635                 default:
1636                         /* A large opt value means that set_refuse_options()
1637                          * turned this option off. */
1638                         if (opt >= OPT_REFUSED_BASE) {
1639                                 create_refuse_error(opt);
1640                                 return 0;
1641                         }
1642                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1643                                  am_server ? "on remote machine: " : "",
1644                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1645                                  poptStrerror(opt));
1646                         return 0;
1647                 }
1648         }
1649
1650         if (human_readable && argc == 2 && !am_server) {
1651                 /* Allow the old meaning of 'h' (--help) on its own. */
1652                 usage(FINFO);
1653                 exit_cleanup(0);
1654         }
1655
1656         set_output_verbosity(verbose, DEFAULT_PRIORITY);
1657
1658         if (do_stats && !am_server) {
1659                 parse_output_words(info_words, info_levels,
1660                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1661         }
1662
1663 #ifdef ICONV_OPTION
1664         if (iconv_opt && protect_args != 2) {
1665                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1666                         iconv_opt = NULL;
1667                 else
1668                         need_unsorted_flist = 1;
1669         }
1670         if (refused_no_iconv && !iconv_opt) {
1671                 create_refuse_error(refused_no_iconv);
1672                 return 0;
1673         }
1674 #endif
1675
1676         if (protect_args == 1 && am_server)
1677                 return 1;
1678
1679         *argv_p = argv = poptGetArgs(pc);
1680         *argc_p = argc = count_args(argv);
1681
1682 #ifndef SUPPORT_LINKS
1683         if (preserve_links && !am_sender) {
1684                 snprintf(err_buf, sizeof err_buf,
1685                          "symlinks are not supported on this %s\n",
1686                          am_server ? "server" : "client");
1687                 return 0;
1688         }
1689 #endif
1690
1691 #ifndef SUPPORT_HARD_LINKS
1692         if (preserve_hard_links) {
1693                 snprintf(err_buf, sizeof err_buf,
1694                          "hard links are not supported on this %s\n",
1695                          am_server ? "server" : "client");
1696                 return 0;
1697         }
1698 #endif
1699
1700 #ifdef SUPPORT_XATTRS
1701         if (am_root < 0 && preserve_xattrs > 1) {
1702                 snprintf(err_buf, sizeof err_buf,
1703                          "--fake-super conflicts with -XX\n");
1704                 return 0;
1705         }
1706 #else
1707         if (am_root < 0) {
1708                 snprintf(err_buf, sizeof err_buf,
1709                          "--fake-super requires an rsync with extended attributes enabled\n");
1710                 return 0;
1711         }
1712 #endif
1713
1714         if (write_batch && read_batch) {
1715                 snprintf(err_buf, sizeof err_buf,
1716                         "--write-batch and --read-batch can not be used together\n");
1717                 return 0;
1718         }
1719         if (write_batch > 0 || read_batch) {
1720                 if (am_server) {
1721                         rprintf(FINFO,
1722                                 "ignoring --%s-batch option sent to server\n",
1723                                 write_batch ? "write" : "read");
1724                         /* We don't actually exit_cleanup(), so that we can
1725                          * still service older version clients that still send
1726                          * batch args to server. */
1727                         read_batch = write_batch = 0;
1728                         batch_name = NULL;
1729                 } else if (dry_run)
1730                         write_batch = 0;
1731         } else if (write_batch < 0 && dry_run)
1732                 write_batch = 0;
1733         if (read_batch && files_from) {
1734                 snprintf(err_buf, sizeof err_buf,
1735                         "--read-batch cannot be used with --files-from\n");
1736                 return 0;
1737         }
1738         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1739                 snprintf(err_buf, sizeof err_buf,
1740                         "the batch-file name must be %d characters or less.\n",
1741                         MAX_BATCH_NAME_LEN);
1742                 return 0;
1743         }
1744
1745         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1746                 snprintf(err_buf, sizeof err_buf,
1747                          "the --temp-dir path is WAY too long.\n");
1748                 return 0;
1749         }
1750
1751         if (max_delete < 0 && max_delete != INT_MIN) {
1752                 /* Negative numbers are treated as "no deletions". */
1753                 max_delete = 0;
1754         }
1755
1756         if (compare_dest + copy_dest + link_dest > 1) {
1757                 snprintf(err_buf, sizeof err_buf,
1758                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1759                 return 0;
1760         }
1761
1762         if (files_from) {
1763                 if (recurse == 1) /* preserve recurse == 2 */
1764                         recurse = 0;
1765                 if (xfer_dirs < 0)
1766                         xfer_dirs = 1;
1767         }
1768
1769         if (argc < 2 && !read_batch && !am_server)
1770                 list_only |= 1;
1771
1772         if (xfer_dirs >= 4) {
1773                 parse_rule(&filter_list, "- /*/*", 0, 0);
1774                 recurse = xfer_dirs = 1;
1775         } else if (recurse)
1776                 xfer_dirs = 1;
1777         else if (xfer_dirs < 0)
1778                 xfer_dirs = list_only ? 1 : 0;
1779
1780         if (relative_paths < 0)
1781                 relative_paths = files_from? 1 : 0;
1782         if (!relative_paths)
1783                 implied_dirs = 0;
1784
1785         if (delete_before + !!delete_during + delete_after > 1) {
1786                 snprintf(err_buf, sizeof err_buf,
1787                         "You may not combine multiple --delete-WHEN options.\n");
1788                 return 0;
1789         }
1790         if (delete_before || delete_during || delete_after)
1791                 delete_mode = 1;
1792         else if (delete_mode || delete_excluded) {
1793                 /* Only choose now between before & during if one is refused. */
1794                 if (refused_delete_before) {
1795                         if (!refused_delete_during)
1796                                 delete_during = 1;
1797                         else {
1798                                 create_refuse_error(refused_delete_before);
1799                                 return 0;
1800                         }
1801                 } else if (refused_delete_during)
1802                         delete_before = 1;
1803                 delete_mode = 1;
1804         }
1805         if (!xfer_dirs && delete_mode) {
1806                 snprintf(err_buf, sizeof err_buf,
1807                         "--delete does not work without -r or -d.\n");
1808                 return 0;
1809         }
1810
1811         if (delete_mode && refused_delete) {
1812                 create_refuse_error(refused_delete);
1813                 return 0;
1814         }
1815
1816         if (remove_source_files) {
1817                 /* We only want to infer this refusal of --remove-source-files
1818                  * via the refusal of "delete", not any of the "delete-FOO"
1819                  * options. */
1820                 if (refused_delete && am_sender) {
1821                         create_refuse_error(refused_delete);
1822                         return 0;
1823                 }
1824                 need_messages_from_generator = 1;
1825         }
1826
1827         if (sanitize_paths) {
1828                 int i;
1829                 for (i = argc; i-- > 0; )
1830                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
1831                 if (tmpdir)
1832                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
1833                 if (backup_dir)
1834                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
1835         }
1836         if (daemon_filter_list.head && !am_sender) {
1837                 struct filter_list_struct *elp = &daemon_filter_list;
1838                 if (tmpdir) {
1839                         char *dir;
1840                         if (!*tmpdir)
1841                                 goto options_rejected;
1842                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1843                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1844                         if (check_filter(elp, FLOG, dir, 1) < 0)
1845                                 goto options_rejected;
1846                 }
1847                 if (backup_dir) {
1848                         char *dir;
1849                         if (!*backup_dir)
1850                                 goto options_rejected;
1851                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1852                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1853                         if (check_filter(elp, FLOG, dir, 1) < 0)
1854                                 goto options_rejected;
1855                 }
1856         }
1857
1858         if (!backup_suffix)
1859                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1860         backup_suffix_len = strlen(backup_suffix);
1861         if (strchr(backup_suffix, '/') != NULL) {
1862                 snprintf(err_buf, sizeof err_buf,
1863                         "--suffix cannot contain slashes: %s\n",
1864                         backup_suffix);
1865                 return 0;
1866         }
1867         if (backup_dir) {
1868                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1869                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1870                 if (backup_dir_remainder < 32) {
1871                         snprintf(err_buf, sizeof err_buf,
1872                                 "the --backup-dir path is WAY too long.\n");
1873                         return 0;
1874                 }
1875                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1876                         backup_dir_buf[backup_dir_len++] = '/';
1877                         backup_dir_buf[backup_dir_len] = '\0';
1878                 }
1879                 if (INFO_GTE(BACKUP, 1) && !am_sender)
1880                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1881         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1882                 snprintf(err_buf, sizeof err_buf,
1883                         "--suffix cannot be a null string without --backup-dir\n");
1884                 return 0;
1885         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1886                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1887                         "P *%s", backup_suffix);
1888                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1889         }
1890
1891         if (make_backups && !backup_dir) {
1892                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1893                 if (preserve_times > 1)
1894                         preserve_times = 1;
1895         } else if (omit_dir_times) {
1896                 if (preserve_times > 1)
1897                         preserve_times = 1;
1898         }
1899
1900         if (stdout_format) {
1901                 if (am_server && log_format_has(stdout_format, 'I'))
1902                         stdout_format_has_i = 2;
1903                 else if (log_format_has(stdout_format, 'i'))
1904                         stdout_format_has_i = itemize_changes | 1;
1905                 if (!log_format_has(stdout_format, 'b')
1906                  && !log_format_has(stdout_format, 'c')
1907                  && !log_format_has(stdout_format, 'C'))
1908                         log_before_transfer = !am_server;
1909         } else if (itemize_changes) {
1910                 stdout_format = "%i %n%L";
1911                 stdout_format_has_i = itemize_changes;
1912                 log_before_transfer = !am_server;
1913         }
1914
1915         if (do_progress && !am_server) {
1916                 if (!log_before_transfer && INFO_EQ(NAME, 0))
1917                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
1918                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
1919         }
1920
1921         if (dry_run)
1922                 do_xfers = 0;
1923
1924         set_io_timeout(io_timeout);
1925
1926         if (INFO_GTE(NAME, 1) && !stdout_format) {
1927                 stdout_format = "%n%L";
1928                 log_before_transfer = !am_server;
1929         }
1930         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1931                 stdout_format_has_o_or_i = 1;
1932
1933         if (logfile_name && !am_daemon) {
1934                 if (!logfile_format) {
1935                         logfile_format = "%i %n%L";
1936                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1937                 } else {
1938                         if (log_format_has(logfile_format, 'i'))
1939                                 logfile_format_has_i = 1;
1940                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1941                                 logfile_format_has_o_or_i = 1;
1942                 }
1943                 log_init(0);
1944         } else if (!am_daemon)
1945                 logfile_format = NULL;
1946
1947         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1948                 bwlimit = daemon_bwlimit;
1949         if (bwlimit) {
1950                 bwlimit_writemax = (size_t)bwlimit * 128;
1951                 if (bwlimit_writemax < 512)
1952                         bwlimit_writemax = 512;
1953         }
1954
1955         if (sparse_files && inplace) {
1956                 /* Note: we don't check for this below, because --append is
1957                  * OK with --sparse (as long as redos are handled right). */
1958                 snprintf(err_buf, sizeof err_buf,
1959                          "--sparse cannot be used with --inplace\n");
1960                 return 0;
1961         }
1962
1963         if (append_mode) {
1964                 if (whole_file > 0) {
1965                         snprintf(err_buf, sizeof err_buf,
1966                                  "--append cannot be used with --whole-file\n");
1967                         return 0;
1968                 }
1969                 if (refused_inplace) {
1970                         create_refuse_error(refused_inplace);
1971                         return 0;
1972                 }
1973                 inplace = 1;
1974         }
1975
1976         if (delay_updates && !partial_dir)
1977                 partial_dir = tmp_partialdir;
1978
1979         if (inplace) {
1980 #ifdef HAVE_FTRUNCATE
1981                 if (partial_dir) {
1982                         snprintf(err_buf, sizeof err_buf,
1983                                  "--%s cannot be used with --%s\n",
1984                                  append_mode ? "append" : "inplace",
1985                                  delay_updates ? "delay-updates" : "partial-dir");
1986                         return 0;
1987                 }
1988                 /* --inplace implies --partial for refusal purposes, but we
1989                  * clear the keep_partial flag for internal logic purposes. */
1990                 if (refused_partial) {
1991                         create_refuse_error(refused_partial);
1992                         return 0;
1993                 }
1994                 keep_partial = 0;
1995 #else
1996                 snprintf(err_buf, sizeof err_buf,
1997                          "--%s is not supported on this %s\n",
1998                          append_mode ? "append" : "inplace",
1999                          am_server ? "server" : "client");
2000                 return 0;
2001 #endif
2002         } else {
2003                 if (keep_partial && !partial_dir && !am_server) {
2004                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2005                                 partial_dir = strdup(arg);
2006                 }
2007                 if (partial_dir) {
2008                         if (*partial_dir)
2009                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2010                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2011                                 partial_dir = NULL;
2012                         if (!partial_dir && refused_partial) {
2013                                 create_refuse_error(refused_partial);
2014                                 return 0;
2015                         }
2016                         keep_partial = 1;
2017                 }
2018         }
2019
2020         if (files_from) {
2021                 char *h, *p;
2022                 int q;
2023                 if (argc > 2 || (!am_daemon && argc == 1)) {
2024                         usage(FERROR);
2025                         exit_cleanup(RERR_SYNTAX);
2026                 }
2027                 if (strcmp(files_from, "-") == 0) {
2028                         filesfrom_fd = 0;
2029                         if (am_server)
2030                                 filesfrom_host = ""; /* reading from socket */
2031                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2032                         if (am_server) {
2033                                 snprintf(err_buf, sizeof err_buf,
2034                                         "The --files-from sent to the server cannot specify a host.\n");
2035                                 return 0;
2036                         }
2037                         files_from = p;
2038                         filesfrom_host = h;
2039                         if (strcmp(files_from, "-") == 0) {
2040                                 snprintf(err_buf, sizeof err_buf,
2041                                         "Invalid --files-from remote filename\n");
2042                                 return 0;
2043                         }
2044                 } else {
2045                         if (sanitize_paths)
2046                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2047                         if (daemon_filter_list.head) {
2048                                 char *dir;
2049                                 if (!*files_from)
2050                                         goto options_rejected;
2051                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2052                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2053                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2054                                         goto options_rejected;
2055                         }
2056                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2057                         if (filesfrom_fd < 0) {
2058                                 snprintf(err_buf, sizeof err_buf,
2059                                         "failed to open files-from file %s: %s\n",
2060                                         files_from, strerror(errno));
2061                                 return 0;
2062                         }
2063                 }
2064         }
2065
2066         am_starting_up = 0;
2067
2068         return 1;
2069
2070   options_rejected:
2071         snprintf(err_buf, sizeof err_buf,
2072                 "Your options have been rejected by the server.\n");
2073         return 0;
2074 }
2075
2076
2077 /**
2078  * Construct a filtered list of options to pass through from the
2079  * client to the server.
2080  *
2081  * This involves setting options that will tell the server how to
2082  * behave, and also filtering out options that are processed only
2083  * locally.
2084  **/
2085 void server_options(char **args, int *argc_p)
2086 {
2087         static char argstr[64];
2088         int ac = *argc_p;
2089         uchar where;
2090         char *arg;
2091         int i, x;
2092
2093         /* This should always remain first on the server's command-line. */
2094         args[ac++] = "--server";
2095
2096         if (daemon_over_rsh > 0) {
2097                 args[ac++] = "--daemon";
2098                 *argc_p = ac;
2099                 /* if we're passing --daemon, we're done */
2100                 return;
2101         }
2102
2103         if (!am_sender)
2104                 args[ac++] = "--sender";
2105
2106         x = 1;
2107         argstr[0] = '-';
2108
2109         if (protect_args)
2110                 argstr[x++] = 's';
2111
2112         for (i = 0; i < verbose; i++)
2113                 argstr[x++] = 'v';
2114
2115         /* the -q option is intentionally left out */
2116         if (make_backups)
2117                 argstr[x++] = 'b';
2118         if (update_only)
2119                 argstr[x++] = 'u';
2120         if (!do_xfers) /* Note: NOT "dry_run"! */
2121                 argstr[x++] = 'n';
2122         if (preserve_links)
2123                 argstr[x++] = 'l';
2124         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2125          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2126                 argstr[x++] = 'd';
2127         if (am_sender) {
2128                 if (keep_dirlinks)
2129                         argstr[x++] = 'K';
2130                 if (prune_empty_dirs)
2131                         argstr[x++] = 'm';
2132                 if (omit_dir_times)
2133                         argstr[x++] = 'O';
2134         } else {
2135                 if (copy_links)
2136                         argstr[x++] = 'L';
2137                 if (copy_dirlinks)
2138                         argstr[x++] = 'k';
2139         }
2140
2141         if (whole_file > 0)
2142                 argstr[x++] = 'W';
2143         /* We don't need to send --no-whole-file, because it's the
2144          * default for remote transfers, and in any case old versions
2145          * of rsync will not understand it. */
2146
2147         if (preserve_hard_links) {
2148                 argstr[x++] = 'H';
2149                 if (preserve_hard_links > 1)
2150                         argstr[x++] = 'H';
2151         }
2152         if (preserve_uid)
2153                 argstr[x++] = 'o';
2154         if (preserve_gid)
2155                 argstr[x++] = 'g';
2156         if (preserve_devices) /* ignore preserve_specials here */
2157                 argstr[x++] = 'D';
2158         if (preserve_times)
2159                 argstr[x++] = 't';
2160         if (preserve_perms)
2161                 argstr[x++] = 'p';
2162         else if (preserve_executability && am_sender)
2163                 argstr[x++] = 'E';
2164 #ifdef SUPPORT_ACLS
2165         if (preserve_acls)
2166                 argstr[x++] = 'A';
2167 #endif
2168 #ifdef SUPPORT_XATTRS
2169         if (preserve_xattrs) {
2170                 argstr[x++] = 'X';
2171                 if (preserve_xattrs > 1)
2172                         argstr[x++] = 'X';
2173         }
2174 #endif
2175         if (recurse)
2176                 argstr[x++] = 'r';
2177         if (always_checksum)
2178                 argstr[x++] = 'c';
2179         if (cvs_exclude)
2180                 argstr[x++] = 'C';
2181         if (ignore_times)
2182                 argstr[x++] = 'I';
2183         if (relative_paths)
2184                 argstr[x++] = 'R';
2185         if (one_file_system) {
2186                 argstr[x++] = 'x';
2187                 if (one_file_system > 1)
2188                         argstr[x++] = 'x';
2189         }
2190         if (sparse_files)
2191                 argstr[x++] = 'S';
2192         if (do_compression)
2193                 argstr[x++] = 'z';
2194
2195         set_allow_inc_recurse();
2196
2197         /* Checking the pre-negotiated value allows --protocol=29 override. */
2198         if (protocol_version >= 30) {
2199                 /* We make use of the -e option to let the server know about
2200                  * any pre-release protocol version && some behavior flags. */
2201                 argstr[x++] = 'e';
2202 #if SUBPROTOCOL_VERSION != 0
2203                 if (protocol_version == PROTOCOL_VERSION) {
2204                         x += snprintf(argstr+x, sizeof argstr - x,
2205                                       "%d.%d",
2206                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2207                 } else
2208 #endif
2209                         argstr[x++] = '.';
2210                 if (allow_inc_recurse)
2211                         argstr[x++] = 'i';
2212 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
2213                 argstr[x++] = 'L';
2214 #endif
2215         }
2216
2217         if (x >= (int)sizeof argstr) { /* Not possible... */
2218                 rprintf(FERROR, "argstr overflow in server_options().\n");
2219                 exit_cleanup(RERR_MALLOC);
2220         }
2221
2222         argstr[x] = '\0';
2223
2224         args[ac++] = argstr;
2225
2226 #ifdef ICONV_OPTION
2227         if (iconv_opt) {
2228                 char *set = strchr(iconv_opt, ',');
2229                 if (set)
2230                         set++;
2231                 else
2232                         set = iconv_opt;
2233                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2234                         goto oom;
2235                 args[ac++] = arg;
2236         }
2237 #endif
2238
2239         if (protect_args && !local_server) /* unprotected args stop here */
2240                 args[ac++] = NULL;
2241
2242         if (list_only > 1)
2243                 args[ac++] = "--list-only";
2244
2245         /* This makes sure that the remote rsync can handle deleting with -d
2246          * sans -r because the --no-r option was added at the same time. */
2247         if (xfer_dirs && !recurse && delete_mode && am_sender)
2248                 args[ac++] = "--no-r";
2249
2250         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2251                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2252                         goto oom;
2253                 args[ac++] = arg;
2254         }
2255
2256         if (preserve_devices) {
2257                 /* Note: sending "--devices" would not be backward-compatible. */
2258                 if (!preserve_specials)
2259                         args[ac++] = "--no-specials"; /* -D is already set. */
2260         } else if (preserve_specials)
2261                 args[ac++] = "--specials";
2262
2263         /* The server side doesn't use our log-format, but in certain
2264          * circumstances they need to know a little about the option. */
2265         if (stdout_format && am_sender) {
2266                 /* Use --log-format, not --out-format, for compatibility. */
2267                 if (stdout_format_has_i > 1)
2268                         args[ac++] = "--log-format=%i%I";
2269                 else if (stdout_format_has_i)
2270                         args[ac++] = "--log-format=%i";
2271                 else if (stdout_format_has_o_or_i)
2272                         args[ac++] = "--log-format=%o";
2273                 else if (!verbose)
2274                         args[ac++] = "--log-format=X";
2275         }
2276
2277         if (block_size) {
2278                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2279                         goto oom;
2280                 args[ac++] = arg;
2281         }
2282
2283         if (io_timeout) {
2284                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2285                         goto oom;
2286                 args[ac++] = arg;
2287         }
2288
2289         if (bwlimit) {
2290                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2291                         goto oom;
2292                 args[ac++] = arg;
2293         }
2294
2295         if (backup_dir) {
2296                 args[ac++] = "--backup-dir";
2297                 args[ac++] = backup_dir;
2298         }
2299
2300         /* Only send --suffix if it specifies a non-default value. */
2301         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2302                 /* We use the following syntax to avoid weirdness with '~'. */
2303                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2304                         goto oom;
2305                 args[ac++] = arg;
2306         }
2307
2308         if (am_sender) {
2309                 if (max_delete > 0) {
2310                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2311                                 goto oom;
2312                         args[ac++] = arg;
2313                 } else if (max_delete == 0)
2314                         args[ac++] = "--max-delete=-1";
2315                 if (min_size) {
2316                         args[ac++] = "--min-size";
2317                         args[ac++] = min_size_arg;
2318                 }
2319                 if (max_size) {
2320                         args[ac++] = "--max-size";
2321                         args[ac++] = max_size_arg;
2322                 }
2323                 if (delete_before)
2324                         args[ac++] = "--delete-before";
2325                 else if (delete_during == 2)
2326                         args[ac++] = "--delete-delay";
2327                 else if (delete_during)
2328                         args[ac++] = "--delete-during";
2329                 else if (delete_after)
2330                         args[ac++] = "--delete-after";
2331                 else if (delete_mode && !delete_excluded)
2332                         args[ac++] = "--delete";
2333                 if (delete_excluded)
2334                         args[ac++] = "--delete-excluded";
2335                 if (force_delete)
2336                         args[ac++] = "--force";
2337                 if (write_batch < 0)
2338                         args[ac++] = "--only-write-batch=X";
2339                 if (am_root > 1)
2340                         args[ac++] = "--super";
2341                 if (size_only)
2342                         args[ac++] = "--size-only";
2343         } else {
2344                 if (skip_compress) {
2345                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2346                                 goto oom;
2347                         args[ac++] = arg;
2348                 }
2349         }
2350
2351         if (modify_window_set) {
2352                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
2353                         goto oom;
2354                 args[ac++] = arg;
2355         }
2356
2357         if (checksum_seed) {
2358                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2359                         goto oom;
2360                 args[ac++] = arg;
2361         }
2362
2363         if (partial_dir && am_sender) {
2364                 if (partial_dir != tmp_partialdir) {
2365                         args[ac++] = "--partial-dir";
2366                         args[ac++] = partial_dir;
2367                 }
2368                 if (delay_updates)
2369                         args[ac++] = "--delay-updates";
2370         } else if (keep_partial && am_sender)
2371                 args[ac++] = "--partial";
2372
2373         if (ignore_errors)
2374                 args[ac++] = "--ignore-errors";
2375
2376         if (copy_unsafe_links)
2377                 args[ac++] = "--copy-unsafe-links";
2378
2379         if (safe_symlinks)
2380                 args[ac++] = "--safe-links";
2381
2382         if (numeric_ids)
2383                 args[ac++] = "--numeric-ids";
2384
2385         if (use_qsort)
2386                 args[ac++] = "--use-qsort";
2387
2388         if (am_sender) {
2389                 if (ignore_existing)
2390                         args[ac++] = "--ignore-existing";
2391
2392                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2393                 if (ignore_non_existing)
2394                         args[ac++] = "--existing";
2395
2396                 if (tmpdir) {
2397                         args[ac++] = "--temp-dir";
2398                         args[ac++] = tmpdir;
2399                 }
2400
2401                 if (basis_dir[0]) {
2402                         /* the server only needs this option if it is not the sender,
2403                          *   and it may be an older version that doesn't know this
2404                          *   option, so don't send it if client is the sender.
2405                          */
2406                         for (i = 0; i < basis_dir_cnt; i++) {
2407                                 args[ac++] = dest_option;
2408                                 args[ac++] = basis_dir[i];
2409                         }
2410                 }
2411         }
2412
2413         /* What flags do we need to send to the other side? */
2414         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2415         arg = make_output_option(info_words, info_levels, where);
2416         if (arg)
2417                 args[ac++] = arg;
2418
2419         arg = make_output_option(debug_words, debug_levels, where);
2420         if (arg)
2421                 args[ac++] = arg;
2422
2423         if (append_mode) {
2424                 if (append_mode > 1)
2425                         args[ac++] = "--append";
2426                 args[ac++] = "--append";
2427         } else if (inplace)
2428                 args[ac++] = "--inplace";
2429
2430         if (files_from && (!am_sender || filesfrom_host)) {
2431                 if (filesfrom_host) {
2432                         args[ac++] = "--files-from";
2433                         args[ac++] = files_from;
2434                         if (eol_nulls)
2435                                 args[ac++] = "--from0";
2436                 } else {
2437                         args[ac++] = "--files-from=-";
2438                         args[ac++] = "--from0";
2439                 }
2440                 if (!relative_paths)
2441                         args[ac++] = "--no-relative";
2442         }
2443         /* It's OK that this checks the upper-bound of the protocol_version. */
2444         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2445                 args[ac++] = "--no-implied-dirs";
2446
2447         if (fuzzy_basis && am_sender)
2448                 args[ac++] = "--fuzzy";
2449
2450         if (remove_source_files == 1)
2451                 args[ac++] = "--remove-source-files";
2452         else if (remove_source_files)
2453                 args[ac++] = "--remove-sent-files";
2454
2455         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2456                 rprintf(FERROR, "argc overflow in server_options().\n");
2457                 exit_cleanup(RERR_MALLOC);
2458         }
2459
2460         if (remote_option_cnt) {
2461                 int j;
2462                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2463                         rprintf(FERROR, "too many remote options specified.\n");
2464                         exit_cleanup(RERR_SYNTAX);
2465                 }
2466                 for (j = 1; j <= remote_option_cnt; j++)
2467                         args[ac++] = (char*)remote_options[j];
2468         }
2469
2470         *argc_p = ac;
2471         return;
2472
2473     oom:
2474         out_of_memory("server_options");
2475 }
2476
2477 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2478  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2479  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2480  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2481  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2482  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2483  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2484 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2485 {
2486         char *p;
2487         int not_host;
2488         int hostlen;
2489
2490         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2491                 char *path;
2492                 s += strlen(URL_PREFIX);
2493                 if ((p = strchr(s, '/')) != NULL) {
2494                         hostlen = p - s;
2495                         path = p + 1;
2496                 } else {
2497                         hostlen = strlen(s);
2498                         path = "";
2499                 }
2500                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2501                         s++;
2502                         hostlen = p - s;
2503                         if (p[1] == ':')
2504                                 *port_ptr = atoi(p+2);
2505                 } else {
2506                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2507                                 hostlen = p - s;
2508                                 *port_ptr = atoi(p+1);
2509                         }
2510                 }
2511                 if (!*port_ptr)
2512                         *port_ptr = RSYNC_PORT;
2513                 *host_ptr = new_array(char, hostlen + 1);
2514                 strlcpy(*host_ptr, s, hostlen + 1);
2515                 return path;
2516         }
2517
2518         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2519                 s++;
2520                 hostlen = p - s;
2521                 *p = '\0';
2522                 not_host = strchr(s, '/') || !strchr(s, ':');
2523                 *p = ']';
2524                 if (not_host)
2525                         return NULL;
2526                 p++;
2527         } else {
2528                 if (!(p = strchr(s, ':')))
2529                         return NULL;
2530                 hostlen = p - s;
2531                 *p = '\0';
2532                 not_host = strchr(s, '/') != NULL;
2533                 *p = ':';
2534                 if (not_host)
2535                         return NULL;
2536         }
2537
2538         *host_ptr = new_array(char, hostlen + 1);
2539         strlcpy(*host_ptr, s, hostlen + 1);
2540
2541         if (p[1] == ':') {
2542                 if (port_ptr && !*port_ptr)
2543                         *port_ptr = RSYNC_PORT;
2544                 return p + 2;
2545         }
2546         if (port_ptr)
2547                 *port_ptr = 0;
2548
2549         return p + 1;
2550 }