options.c

   1 /*
   2  * Command-line (and received via daemon-socket) option parsing.
   3  *
   4  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
   5  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
   6  * Copyright (C) 2002-2020 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include "itypes.h"
  24 #include "latest-year.h"
  25 #include <popt.h>
  26
  27 extern int module_id;
  28 extern int local_server;
  29 extern int sanitize_paths;
  30 extern int daemon_over_rsh;
  31 extern unsigned int module_dirlen;
  32 extern struct name_num_obj valid_checksums;
  33 extern struct name_num_obj valid_compressions;
  34 extern filter_rule_list filter_list;
  35 extern filter_rule_list daemon_filter_list;
  36
  37 int make_backups = 0;
  38
  39 /**
  40  * If 1, send the whole file as literal data rather than trying to
  41  * create an incremental diff.
  42  *
  43  * If -1, then look at whether we're local or remote and go by that.
  44  *
  45  * @sa disable_deltas_p()
  46  **/
  47 int whole_file = -1;
  48
  49 int append_mode = 0;
  50 int keep_dirlinks = 0;
  51 int copy_dirlinks = 0;
  52 int copy_links = 0;
  53 int write_devices = 0;
  54 int preserve_links = 0;
  55 int preserve_hard_links = 0;
  56 int preserve_acls = 0;
  57 int preserve_xattrs = 0;
  58 int preserve_perms = 0;
  59 int preserve_executability = 0;
  60 int preserve_devices = 0;
  61 int preserve_specials = 0;
  62 int preserve_uid = 0;
  63 int preserve_gid = 0;
  64 int preserve_times = 0;
  65 int preserve_atimes = 0;
  66 int update_only = 0;
  67 int open_noatime = 0;
  68 int cvs_exclude = 0;
  69 int dry_run = 0;
  70 int do_xfers = 1;
  71 int ignore_times = 0;
  72 int delete_mode = 0;
  73 int delete_during = 0;
  74 int delete_before = 0;
  75 int delete_after = 0;
  76 int delete_excluded = 0;
  77 int remove_source_files = 0;
  78 int one_file_system = 0;
  79 int protocol_version = PROTOCOL_VERSION;
  80 int sparse_files = 0;
  81 int preallocate_files = 0;
  82 int do_compression = 0;
  83 int do_compression_level = CLVL_NOT_SPECIFIED;
  84 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  85 int am_server = 0;
  86 int am_sender = 0;
  87 int am_starting_up = 1;
  88 int relative_paths = -1;
  89 int implied_dirs = 1;
  90 int missing_args = 0; /* 0 = FERROR_XFER, 1 = ignore, 2 = delete */
  91 int numeric_ids = 0;
  92 int msgs2stderr = 0;
  93 int allow_8bit_chars = 0;
  94 int force_delete = 0;
  95 int io_timeout = 0;
  96 int prune_empty_dirs = 0;
  97 int use_qsort = 0;
  98 char *files_from = NULL;
  99 int filesfrom_fd = -1;
 100 char *filesfrom_host = NULL;
 101 int eol_nulls = 0;
 102 int protect_args = -1;
 103 int human_readable = 1;
 104 int recurse = 0;
 105 int allow_inc_recurse = 1;
 106 int xfer_dirs = -1;
 107 int am_daemon = 0;
 108 int connect_timeout = 0;
 109 int keep_partial = 0;
 110 int safe_symlinks = 0;
 111 int copy_unsafe_links = 0;
 112 int munge_symlinks = 0;
 113 int size_only = 0;
 114 int daemon_bwlimit = 0;
 115 int bwlimit = 0;
 116 int fuzzy_basis = 0;
 117 size_t bwlimit_writemax = 0;
 118 int ignore_existing = 0;
 119 int ignore_non_existing = 0;
 120 int need_messages_from_generator = 0;
 121 int max_delete = INT_MIN;
 122 OFF_T max_size = -1;
 123 OFF_T min_size = -1;
 124 int ignore_errors = 0;
 125 int modify_window = 0;
 126 int blocking_io = -1;
 127 int checksum_seed = 0;
 128 int inplace = 0;
 129 int delay_updates = 0;
 130 long block_size = 0; /* "long" because popt can't set an int32. */
 131 char *skip_compress = NULL;
 132 char *copy_as = NULL;
 133 item_list dparam_list = EMPTY_ITEM_LIST;
 134
 135 /** Network address family. **/
 136 int default_af_hint
 137 #ifdef INET6
 138         = 0;            /* Any protocol */
 139 #else
 140         = AF_INET;      /* Must use IPv4 */
 141 # ifdef AF_INET6
 142 #  undef AF_INET6
 143 # endif
 144 # define AF_INET6 AF_INET /* make -6 option a no-op */
 145 #endif
 146
 147 /** Do not go into the background when run as --daemon.  Good
 148  * for debugging and required for running as a service on W32,
 149  * or under Unix process-monitors. **/
 150 int no_detach
 151 #if defined _WIN32 || defined __WIN32__
 152         = 1;
 153 #else
 154         = 0;
 155 #endif
 156
 157 int write_batch = 0;
 158 int read_batch = 0;
 159 int backup_dir_len = 0;
 160 int backup_suffix_len;
 161 unsigned int backup_dir_remainder;
 162
 163 char *backup_suffix = NULL;
 164 char *tmpdir = NULL;
 165 char *partial_dir = NULL;
 166 char *basis_dir[MAX_BASIS_DIRS+1];
 167 char *config_file = NULL;
 168 char *shell_cmd = NULL;
 169 char *logfile_name = NULL;
 170 char *logfile_format = NULL;
 171 char *stdout_format = NULL;
 172 char *password_file = NULL;
 173 char *rsync_path = RSYNC_PATH;
 174 char *backup_dir = NULL;
 175 char backup_dir_buf[MAXPATHLEN];
 176 char *sockopts = NULL;
 177 char *usermap = NULL;
 178 char *groupmap = NULL;
 179 int rsync_port = 0;
 180 int compare_dest = 0;
 181 int copy_dest = 0;
 182 int link_dest = 0;
 183 int basis_dir_cnt = 0;
 184 char *dest_option = NULL;
 185
 186 static int remote_option_alloc = 0;
 187 int remote_option_cnt = 0;
 188 const char **remote_options = NULL;
 189 const char *checksum_choice = NULL;
 190 const char *compress_choice = NULL;
 191
 192 int quiet = 0;
 193 int output_motd = 1;
 194 int log_before_transfer = 0;
 195 int stdout_format_has_i = 0;
 196 int stdout_format_has_o_or_i = 0;
 197 int logfile_format_has_i = 0;
 198 int logfile_format_has_o_or_i = 0;
 199 int always_checksum = 0;
 200 int list_only = 0;
 201
 202 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 203 char *batch_name = NULL;
 204
 205 int need_unsorted_flist = 0;
 206 #ifdef ICONV_OPTION
 207 char *iconv_opt = ICONV_OPTION;
 208 #endif
 209
 210 struct chmod_mode_struct *chmod_modes = NULL;
 211
 212 static const char *debug_verbosity[] = {
 213         /*0*/ NULL,
 214         /*1*/ NULL,
 215         /*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
 216         /*3*/ "ACL,BACKUP,CONNECT2,DELTASUM2,DEL2,EXIT,FILTER2,FLIST2,FUZZY,GENR,OWN,RECV,SEND,TIME",
 217         /*4*/ "CMD2,DELTASUM3,DEL3,EXIT2,FLIST3,ICONV2,OWN2,PROTO,TIME2",
 218         /*5*/ "CHDIR,DELTASUM4,FLIST4,FUZZY2,HASH,HLINK",
 219 };
 220
 221 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 222
 223 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 224         /*0*/ NULL,
 225         /*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
 226         /*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
 227 };
 228
 229 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 230
 231 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 232
 233 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 234 #define HELP_PRIORITY 1         /* The help output uses this level. */
 235 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 236 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 237
 238 #define W_CLI (1<<0)    /* client side */
 239 #define W_SRV (1<<1)    /* server side */
 240 #define W_SND (1<<2)    /* sending side */
 241 #define W_REC (1<<3)    /* receiving side */
 242
 243 struct output_struct {
 244         char *name;     /* The name of the info/debug flag. */
 245         char *help;     /* The description of the info/debug flag. */
 246         uchar namelen;  /* The length of the name string. */
 247         uchar flag;     /* The flag's value, for consistency check. */
 248         uchar where;    /* Bits indicating where the flag is used. */
 249         uchar priority; /* See *_PRIORITY defines. */
 250 };
 251
 252 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 253
 254 static struct output_struct info_words[COUNT_INFO+1] = {
 255         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 256         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 257         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 258         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 259         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
 260         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 261         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 262         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 263         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 264         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 265         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 266         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 267         { NULL, "--info", 0, 0, 0, 0 }
 268 };
 269
 270 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 271
 272 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 273         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 274         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 275         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 276         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 277         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events (levels 1-2)"),
 278         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 279         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 280         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 281         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 282         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-3)"),
 283         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 284         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 285         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 286         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 287         DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
 288         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions (levels 1-3)"),
 289         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
 290         DEBUG_WORD(IO, W_CLI|W_SRV, "Debug I/O routines (levels 1-4)"),
 291         DEBUG_WORD(NSTR, W_CLI|W_SRV, "Debug negotiation strings"),
 292         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 293         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 294         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 295         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 296         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 297         { NULL, "--debug", 0, 0, 0, 0 }
 298 };
 299
 300 static int verbose = 0;
 301 static int do_stats = 0;
 302 static int do_progress = 0;
 303 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 304 static int omit_dir_times = 0;
 305 static int omit_link_times = 0;
 306 static int F_option_cnt = 0;
 307 static int modify_window_set;
 308 static int itemize_changes = 0;
 309 static int refused_delete, refused_archive_part, refused_compress;
 310 static int refused_partial, refused_progress, refused_delete_before;
 311 static int refused_delete_during;
 312 static int refused_inplace, refused_no_iconv;
 313 static BOOL usermap_via_chown, groupmap_via_chown;
 314 #ifdef HAVE_SETVBUF
 315 static char *outbuf_mode;
 316 #endif
 317 static char *bwlimit_arg, *max_size_arg, *min_size_arg;
 318 static char tmp_partialdir[] = ".~tmp~";
 319
 320 /** Local address to bind.  As a character string because it's
 321  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 322  * address, or a hostname. **/
 323 char *bind_address;
 324
 325 static void output_item_help(struct output_struct *words);
 326
 327 /* This constructs a string that represents all the options set for either
 328  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 329  * This is used both when conveying the user's options to the server, and
 330  * when the help output wants to tell the user what options are implied. */
 331 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 332 {
 333         char *str = words == info_words ? "--info=" : "--debug=";
 334         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 335         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 336         char *buf;
 337
 338         memset(counts, 0, sizeof counts);
 339
 340         for (j = 0; words[j].name; j++) {
 341                 if (words[j].flag != j) {
 342                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 343                                 words == info_words ? "INFO_" : "DEBUG_",
 344                                 words[j].name, words[j].flag, j);
 345                         exit_cleanup(RERR_UNSUPPORTED);
 346                 }
 347                 if (!(words[j].where & where))
 348                         continue;
 349                 if (words[j].priority == DEFAULT_PRIORITY) {
 350                         /* Implied items don't need to be mentioned. */
 351                         skipped++;
 352                         continue;
 353                 }
 354                 len += len ? 1 : strlen(str);
 355                 len += strlen(words[j].name);
 356                 len += levels[j] == 1 ? 0 : 1;
 357
 358                 if (words[j].priority == HELP_PRIORITY)
 359                         continue; /* no abbreviating for help */
 360
 361                 assert(levels[j] <= MAX_OUT_LEVEL);
 362                 if (++counts[levels[j]] > max) {
 363                         /* Determine which level has the most items. */
 364                         lev = levels[j];
 365                         max = counts[lev];
 366                 }
 367         }
 368
 369         /* Sanity check the COUNT_* define against the length of the table. */
 370         if (j != word_count) {
 371                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 372                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 373                         j, word_count);
 374                 exit_cleanup(RERR_UNSUPPORTED);
 375         }
 376
 377         if (!len)
 378                 return NULL;
 379
 380         len++;
 381         if (!(buf = new_array(char, len)))
 382                 out_of_memory("make_output_option");
 383         pos = 0;
 384
 385         if (skipped || max < 5)
 386                 lev = -1;
 387         else {
 388                 if (lev == 0)
 389                         pos += snprintf(buf, len, "%sNONE", str);
 390                 else if (lev == 1)
 391                         pos += snprintf(buf, len, "%sALL", str);
 392                 else
 393                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 394         }
 395
 396         for (j = 0; words[j].name && pos < len; j++) {
 397                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 398                         continue;
 399                 if (pos)
 400                         buf[pos++] = ',';
 401                 else
 402                         pos += strlcpy(buf+pos, str, len-pos);
 403                 if (pos < len)
 404                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 405                 /* Level 1 is implied by the name alone. */
 406                 if (levels[j] != 1 && pos < len)
 407                         buf[pos++] = '0' + levels[j];
 408         }
 409
 410         buf[pos] = '\0';
 411
 412         return buf;
 413 }
 414
 415 static void parse_output_words(struct output_struct *words, short *levels,
 416                                const char *str, uchar priority)
 417 {
 418         const char *s;
 419         int j, len, lev;
 420
 421         for ( ; str; str = s) {
 422                 if ((s = strchr(str, ',')) != NULL)
 423                         len = s++ - str;
 424                 else
 425                         len = strlen(str);
 426                 if (!len)
 427                         continue;
 428                 if (!isDigit(str)) {
 429                         while (len && isDigit(str+len-1))
 430                                 len--;
 431                 }
 432                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 433                 if (lev > MAX_OUT_LEVEL)
 434                         lev = MAX_OUT_LEVEL;
 435                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 436                         output_item_help(words);
 437                         exit_cleanup(0);
 438                 }
 439                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 440                         len = lev = 0;
 441                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 442                         len = 0;
 443                 for (j = 0; words[j].name; j++) {
 444                         if (!len
 445                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 446                                 if (priority >= words[j].priority) {
 447                                         words[j].priority = priority;
 448                                         levels[j] = lev;
 449                                 }
 450                                 if (len)
 451                                         break;
 452                         }
 453                 }
 454                 if (len && !words[j].name && !am_server) {
 455                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 456                                 words[j].help, len, str);
 457                         exit_cleanup(RERR_SYNTAX);
 458                 }
 459         }
 460 }
 461
 462 /* Tell the user what all the info or debug flags mean. */
 463 static void output_item_help(struct output_struct *words)
 464 {
 465         short *levels = words == info_words ? info_levels : debug_levels;
 466         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 467         char buf[128], *opt, *fmt = "%-10s %s\n";
 468         int j;
 469
 470         reset_output_levels();
 471
 472         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 473         rprintf(FINFO, "\n");
 474         for (j = 0; words[j].name; j++)
 475                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 476         rprintf(FINFO, "\n");
 477
 478         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 479                  words[j].help, MAX_OUT_LEVEL);
 480         rprintf(FINFO, fmt, "ALL", buf);
 481
 482         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 483                  words[j].help);
 484         rprintf(FINFO, fmt, "NONE", buf);
 485
 486         rprintf(FINFO, fmt, "HELP", "Output this help message");
 487         rprintf(FINFO, "\n");
 488         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 489
 490         for (j = 1; j <= MAX_VERBOSITY; j++) {
 491                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 492                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 493                 if (opt) {
 494                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 495                         free(opt);
 496                 }
 497                 reset_output_levels();
 498         }
 499 }
 500
 501 /* The --verbose option now sets info+debug flags. */
 502 static void set_output_verbosity(int level, uchar priority)
 503 {
 504         int j;
 505
 506         if (level > MAX_VERBOSITY)
 507                 level = MAX_VERBOSITY;
 508
 509         for (j = 1; j <= level; j++) {
 510                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 511                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 512         }
 513 }
 514
 515 /* Limit the info+debug flag levels given a verbose-option level limit. */
 516 void limit_output_verbosity(int level)
 517 {
 518         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 519         int j;
 520
 521         if (level > MAX_VERBOSITY)
 522                 return;
 523
 524         memset(info_limits, 0, sizeof info_limits);
 525         memset(debug_limits, 0, sizeof debug_limits);
 526
 527         /* Compute the level limits in the above arrays. */
 528         for (j = 1; j <= level; j++) {
 529                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 530                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 531         }
 532
 533         for (j = 0; j < COUNT_INFO; j++) {
 534                 if (info_levels[j] > info_limits[j])
 535                         info_levels[j] = info_limits[j];
 536         }
 537
 538         for (j = 0; j < COUNT_DEBUG; j++) {
 539                 if (debug_levels[j] > debug_limits[j])
 540                         debug_levels[j] = debug_limits[j];
 541         }
 542 }
 543
 544 void reset_output_levels(void)
 545 {
 546         int j;
 547
 548         memset(info_levels, 0, sizeof info_levels);
 549         memset(debug_levels, 0, sizeof debug_levels);
 550
 551         for (j = 0; j < COUNT_INFO; j++)
 552                 info_words[j].priority = DEFAULT_PRIORITY;
 553
 554         for (j = 0; j < COUNT_DEBUG; j++)
 555                 debug_words[j].priority = DEFAULT_PRIORITY;
 556 }
 557
 558 void negate_output_levels(void)
 559 {
 560         int j;
 561
 562         for (j = 0; j < COUNT_INFO; j++)
 563                 info_levels[j] *= -1;
 564
 565         for (j = 0; j < COUNT_DEBUG; j++)
 566                 debug_levels[j] *= -1;
 567 }
 568
 569 static char *istring(const char *fmt, int val)
 570 {
 571         char *str;
 572         if (asprintf(&str, fmt, val) < 0)
 573                 out_of_memory("istring");
 574         return str;
 575 }
 576
 577 static void print_capabilities(enum logcode f)
 578 {
 579         STRUCT_STAT *dumstat;
 580         char line_buf[75];
 581         int line_len, j;
 582         char *capabilities[] = {
 583                 istring("%d-bit files", (int)(sizeof (OFF_T) * 8)),
 584                 istring("%d-bit inums", (int)(sizeof dumstat->st_ino * 8)), /* Don't check ino_t! */
 585                 istring("%d-bit timestamps", (int)(sizeof (time_t) * 8)),
 586                 istring("%d-bit long ints", (int)(sizeof (int64) * 8)),
 587
 588 #ifndef HAVE_SOCKETPAIR
 589                 "no "
 590 #endif
 591                         "socketpairs",
 592
 593 #ifndef SUPPORT_HARD_LINKS
 594                 "no "
 595 #endif
 596                         "hardlinks",
 597
 598 #ifndef SUPPORT_LINKS
 599                 "no "
 600 #endif
 601                         "symlinks",
 602
 603 #ifndef INET6
 604                 "no "
 605 #endif
 606                         "IPv6",
 607
 608                 "batchfiles",
 609
 610 #ifndef HAVE_FTRUNCATE
 611                 "no "
 612 #endif
 613                         "inplace",
 614
 615 #ifndef HAVE_FTRUNCATE
 616                 "no "
 617 #endif
 618                         "append",
 619
 620 #ifndef SUPPORT_ACLS
 621                 "no "
 622 #endif
 623                         "ACLs",
 624
 625 #ifndef SUPPORT_XATTRS
 626                 "no "
 627 #endif
 628                         "xattrs",
 629
 630 #ifndef ICONV_OPTION
 631                 "no "
 632 #endif
 633                         "iconv",
 634
 635 #ifndef CAN_SET_SYMLINK_TIMES
 636                 "no "
 637 #endif
 638                         "symtimes",
 639
 640 #ifndef SUPPORT_PREALLOCATION
 641                 "no "
 642 #endif
 643                         "prealloc",
 644
 645 #ifndef HAVE_SIMD
 646                 "no "
 647 #endif
 648                         "SIMD",
 649
 650                 NULL
 651         };
 652
 653         for (line_len = 0, j = 0; ; j++) {
 654                 char *cap = capabilities[j];
 655                 int cap_len = cap ? strlen(cap) : 1000;
 656                 int need_comma = cap && capabilities[j+1] != NULL ? 1 : 0;
 657                 if (line_len + 1 + cap_len + need_comma >= (int)sizeof line_buf) {
 658                         rprintf(f, "   %s\n", line_buf);
 659                         line_len = 0;
 660                 }
 661                 if (!cap)
 662                         break;
 663                 line_len += snprintf(line_buf+line_len, sizeof line_buf - line_len, " %s%s", cap, need_comma ? "," : "");
 664         }
 665 }
 666
 667 static void print_rsync_version(enum logcode f)
 668 {
 669         char tmpbuf[256], *subprotocol = "";
 670
 671 #if SUBPROTOCOL_VERSION != 0
 672         subprotocol = istring(".PR%d", SUBPROTOCOL_VERSION);
 673 #endif
 674         rprintf(f, "%s  version %s  protocol version %d%s\n",
 675                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 676
 677         rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
 678         rprintf(f, "Web site: http://rsync.samba.org/\n");
 679
 680         rprintf(f, "Capabilities:\n");
 681         print_capabilities(f);
 682
 683         rprintf(f, "Checksum list:\n");
 684         get_default_nno_list(&valid_checksums, tmpbuf, sizeof tmpbuf, '(');
 685         rprintf(f, "    %s\n", tmpbuf);
 686
 687         rprintf(f, "Compress list:\n");
 688         get_default_nno_list(&valid_compressions, tmpbuf, sizeof tmpbuf, '(');
 689         rprintf(f, "    %s\n", tmpbuf);
 690
 691 #ifdef MAINTAINER_MODE
 692         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 693 #endif
 694
 695 #if SIZEOF_INT64 < 8
 696         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 697 #endif
 698         if (sizeof (int64) != SIZEOF_INT64) {
 699                 rprintf(f,
 700                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 701                         (int) SIZEOF_INT64, (int) sizeof (int64));
 702         }
 703
 704         rprintf(f,"\n");
 705         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 706         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 707         rprintf(f,"General Public Licence for details.\n");
 708 }
 709
 710
 711 void usage(enum logcode F)
 712 {
 713   print_rsync_version(F);
 714
 715   rprintf(F,"\n");
 716   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 717   rprintf(F,"via a fast differencing algorithm.\n");
 718
 719   rprintf(F,"\n");
 720   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 721   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 722   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 723   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 724   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 725   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 726   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 727   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 728   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 729   rprintf(F,"\n");
 730   rprintf(F,"Options\n");
 731   rprintf(F," -v, --verbose               increase verbosity\n");
 732   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 733   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 734   rprintf(F,"     --msgs2stderr           output messages directly to stderr\n");
 735   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 736   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 737   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 738   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 739   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 740   rprintf(F," -r, --recursive             recurse into directories\n");
 741   rprintf(F," -R, --relative              use relative path names\n");
 742   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 743   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 744   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 745   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 746   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 747   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 748   rprintf(F,"     --append                append data onto shorter files\n");
 749   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 750   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 751   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 752   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 753   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 754   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 755   rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
 756   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 757   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 758   rprintf(F," -H, --hard-links            preserve hard links\n");
 759   rprintf(F," -p, --perms                 preserve permissions\n");
 760   rprintf(F," -E, --executability         preserve the file's executability\n");
 761   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 762 #ifdef SUPPORT_ACLS
 763   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 764 #endif
 765 #ifdef SUPPORT_XATTRS
 766   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 767 #endif
 768   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 769   rprintf(F," -g, --group                 preserve group\n");
 770   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 771   rprintf(F,"     --specials              preserve special files\n");
 772   rprintf(F," -D                          same as --devices --specials\n");
 773   rprintf(F," -t, --times                 preserve modification times\n");
 774   rprintf(F," -U, --atimes                preserve access (last-used) times\n");
 775   rprintf(F,"     --open-noatime          avoid changing the atime on opened files\n");
 776   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 777   rprintf(F," -J, --omit-link-times       omit symlinks from --times\n");
 778   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 779 #ifdef SUPPORT_XATTRS
 780   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 781 #endif
 782   rprintf(F," -S, --sparse                turn sequences of nulls into sparse blocks\n");
 783 #ifdef SUPPORT_PREALLOCATION
 784   rprintf(F,"     --preallocate           allocate dest files before writing them\n");
 785 #else
 786   rprintf(F,"     --preallocate           pre-allocate dest files on remote receiver\n");
 787 #endif
 788   rprintf(F,"     --write-devices         write to devices as files (implies --inplace)\n");
 789   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 790   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 791   rprintf(F,"     --checksum-choice=STR   choose the checksum algorithms\n");
 792   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 793   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 794   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 795   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 796   rprintf(F,"     --existing              skip creating new files on receiver\n");
 797   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 798   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 799   rprintf(F,"     --del                   an alias for --delete-during\n");
 800   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 801   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 802   rprintf(F,"     --delete-during         receiver deletes during the transfer\n");
 803   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 804   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 805   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 806   rprintf(F,"     --ignore-missing-args   ignore missing source args without error\n");
 807   rprintf(F,"     --delete-missing-args   delete missing source args from destination\n");
 808   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 809   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 810   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 811   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 812   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 813   rprintf(F,"     --partial               keep partially transferred files\n");
 814   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 815   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 816   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 817   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 818   rprintf(F,"     --usermap=STRING        custom username mapping\n");
 819   rprintf(F,"     --groupmap=STRING       custom groupname mapping\n");
 820   rprintf(F,"     --chown=USER:GROUP      simple username/groupname mapping\n");
 821   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 822   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 823   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 824   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 825   rprintf(F,"     --size-only             skip files that match in size\n");
 826   rprintf(F," -@, --modify-window=NUM     set the accuracy for mod-time comparisons\n");
 827   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 828   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 829   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 830   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 831   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 832   rprintf(F," -z, --compress              compress file data during the transfer\n");
 833   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 834   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 835   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 836   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 837   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 838   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 839   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 840   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 841   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 842   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 843   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 844   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 845   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 846   rprintf(F,"     --copy-as=USER[:GROUP]  specify user & optional group for the copy\n");
 847   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 848   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 849   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 850   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 851   rprintf(F,"     --stats                 give some file-transfer stats\n");
 852   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 853   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 854   rprintf(F,"     --progress              show progress during transfer\n");
 855   rprintf(F," -P                          same as --partial --progress\n");
 856   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 857   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 858   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 859   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 860   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 861   rprintf(F,"     --list-only             list the files instead of copying them\n");
 862   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
 863 #ifdef HAVE_SETVBUF
 864   rprintf(F,"     --outbuf=N|L|B          set output buffering to None, Line, or Block\n");
 865 #endif
 866   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 867   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 868   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 869   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 870 #ifdef ICONV_OPTION
 871   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 872 #endif
 873   rprintf(F,"     --checksum-seed=NUM     set block/file checksum seed (advanced)\n");
 874   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 875   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 876   rprintf(F," -V, --version               print the version & other info and exit\n");
 877   rprintf(F,"(-h) --help                  show this help (-h is --help only if used alone)\n");
 878
 879   rprintf(F,"\n");
 880   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 881   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 882   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 883 }
 884
 885 enum {OPT_SERVER = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 886       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 887       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 888       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 889       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 890       OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN, OPT_BWLIMIT,
 891       OPT_OLD_COMPRESS, OPT_NEW_COMPRESS, OPT_NO_COMPRESS,
 892       OPT_REFUSED_BASE = 9000};
 893
 894 static struct poptOption long_options[] = {
 895   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 896   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 897   {"version",         'V', POPT_ARG_NONE,   0, 'V', 0, 0},
 898   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 899   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 900   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 901   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 902   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 903   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 904   {"no-msgs2stderr",   0,  POPT_ARG_VAL,    &msgs2stderr, 0, 0, 0 },
 905   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 906   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 907   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 908   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 909   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 910   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 911   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 912   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 913   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 914   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 915   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 916   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 917   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 918   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 919   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 920   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 921   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 922   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 923   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 924   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 925   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 926   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 927   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 928   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 929   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 930   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 931   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 932   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 933   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 934   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 935   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 936   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 937   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 938   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 939   {"atimes",          'U', POPT_ARG_NONE,   0, 'U', 0, 0 },
 940   {"no-atimes",        0,  POPT_ARG_VAL,    &preserve_atimes, 0, 0, 0 },
 941   {"no-U",             0,  POPT_ARG_VAL,    &preserve_atimes, 0, 0, 0 },
 942   {"open-noatime",     0,  POPT_ARG_VAL,    &open_noatime, 1, 0, 0 },
 943   {"no-open-noatime",  0,  POPT_ARG_VAL,    &open_noatime, 0, 0, 0 },
 944   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 945   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 946   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 947   {"omit-link-times", 'J', POPT_ARG_VAL,    &omit_link_times, 1, 0, 0 },
 948   {"no-omit-link-times",0, POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 949   {"no-J",             0,  POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 950   {"modify-window",   '@', POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 951   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 952   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 953   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 954   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 955   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 956   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 957   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 958   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 959   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 960   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 961   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 962   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 963   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 964   {"write-devices",    0,  POPT_ARG_VAL,    &write_devices, 1, 0, 0 },
 965   {"no-write-devices", 0,  POPT_ARG_VAL,    &write_devices, 0, 0, 0 },
 966   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 967   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 968   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 969   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 970   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 971   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 972   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 973   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 974   {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
 975   {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
 976   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 977   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 978   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 979   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 980   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 981   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 982   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 983   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 984   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 985   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 986   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 987   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 988   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 989   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 990   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 991   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 992   {"no-one-file-system",0, POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 993   {"no-x",             0,  POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 994   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 995   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 996   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 997   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 998   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 999   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
1000   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
1001   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
1002   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
1003   {"preallocate",      0,  POPT_ARG_NONE,   &preallocate_files, 0, 0, 0},
1004   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
1005   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
1006   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
1007   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
1008   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
1009   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
1010   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
1011   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
1012   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
1013   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
1014   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
1015   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
1016   {"delete-missing-args",0,POPT_BIT_SET,    &missing_args, 2, 0, 0 },
1017   {"ignore-missing-args",0,POPT_BIT_SET,    &missing_args, 1, 0, 0 },
1018   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
1019   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
1020   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
1021   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
1022   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
1023   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
1024   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
1025   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
1026   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
1027   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
1028   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
1029   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
1030   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
1031   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
1032   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
1033   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
1034   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
1035   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
1036   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
1037   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
1038   {"checksum-choice",  0,  POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
1039   {"cc",               0,  POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
1040   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
1041   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
1042   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
1043   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
1044   {"fuzzy",           'y', POPT_ARG_NONE,   0, 'y', 0, 0 },
1045   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
1046   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
1047   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
1048   {"old-compress",     0,  POPT_ARG_NONE,   0, OPT_OLD_COMPRESS, 0, 0 },
1049   {"new-compress",     0,  POPT_ARG_NONE,   0, OPT_NEW_COMPRESS, 0, 0 },
1050   {"no-compress",      0,  POPT_ARG_NONE,   0, OPT_NO_COMPRESS, 0, 0 },
1051   {"no-z",             0,  POPT_ARG_NONE,   0, OPT_NO_COMPRESS, 0, 0 },
1052   {"compress-choice",  0,  POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
1053   {"zc",               0,  POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
1054   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
1055   {"compress-level",   0,  POPT_ARG_INT,    &do_compression_level, 0, 0, 0 },
1056   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
1057   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
1058   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
1059   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
1060   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
1061   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
1062   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
1063   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
1064   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
1065   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
1066   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
1067   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1068   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1069   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
1070   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
1071   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
1072   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
1073   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
1074   {"bwlimit",          0,  POPT_ARG_STRING, &bwlimit_arg, OPT_BWLIMIT, 0, 0 },
1075   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
1076   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
1077   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
1078   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
1079   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
1080   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
1081   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
1082   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
1083   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
1084   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
1085   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
1086   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
1087   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
1088   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
1089   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
1090   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
1091   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
1092   {"usermap",          0,  POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
1093   {"groupmap",         0,  POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
1094   {"chown",            0,  POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
1095   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
1096   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
1097   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
1098   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
1099   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
1100   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
1101   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1102 #ifdef ICONV_OPTION
1103   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
1104   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
1105 #endif
1106   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1107   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1108   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
1109   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1110   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1111   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
1112   {"copy-as",          0,  POPT_ARG_STRING, &copy_as, 0, 0, 0 },
1113   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1114   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1115   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1116   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
1117   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
1118   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
1119 #ifdef HAVE_SETVBUF
1120   {"outbuf",           0,  POPT_ARG_STRING, &outbuf_mode, 0, 0, 0 },
1121 #endif
1122   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1123   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1124   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
1125   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
1126   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
1127   /* All the following options switch us into daemon-mode option-parsing. */
1128   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1129   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1130   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1131   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1132   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1133   {0,0,0,0, 0, 0, 0}
1134 };
1135
1136 static void daemon_usage(enum logcode F)
1137 {
1138   print_rsync_version(F);
1139
1140   rprintf(F,"\n");
1141   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1142   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1143   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
1144   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1145   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1146   rprintf(F,"     --no-detach             do not detach from the parent\n");
1147   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1148   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1149   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1150   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1151   rprintf(F," -v, --verbose               increase verbosity\n");
1152   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1153   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1154   rprintf(F,"     --help                  show this help screen\n");
1155
1156   rprintf(F,"\n");
1157   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1158   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1159 }
1160
1161 static struct poptOption long_daemon_options[] = {
1162   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1163   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1164   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1165   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1166   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1167   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1168   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1169   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1170   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1171   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1172   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1173   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1174   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1175   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1176   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1177   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1178   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1179   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1180   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1181   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1182   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1183   {0,0,0,0, 0, 0, 0}
1184 };
1185
1186
1187 static char err_buf[200];
1188
1189
1190 /**
1191  * Store the option error message, if any, so that we can log the
1192  * connection attempt (which requires parsing the options), and then
1193  * show the error later on.
1194  **/
1195 void option_error(void)
1196 {
1197         if (!err_buf[0]) {
1198                 strlcpy(err_buf, "Error parsing options: option may "
1199                         "be supported on client but not on server?\n",
1200                         sizeof err_buf);
1201         }
1202
1203         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1204         io_flush(MSG_FLUSH);
1205         msleep(20);
1206 }
1207
1208
1209 static void parse_one_refuse_match(int negated, const char *ref, const struct poptOption *list_end)
1210 {
1211         struct poptOption *op;
1212         char shortName[2];
1213         int is_wild = strpbrk(ref, "*?[") != NULL;
1214         int found_match = 0;
1215
1216         shortName[1] = '\0';
1217
1218         if (strcmp("a", ref) == 0 || strcmp("archive", ref) == 0) {
1219                 ref = "[ardlptgoD]";
1220                 is_wild = 1;
1221         }
1222
1223         for (op = long_options; op != list_end; op++) {
1224                 *shortName = op->shortName;
1225                 if ((op->longName && wildmatch(ref, op->longName))
1226                  || (*shortName && wildmatch(ref, shortName))) {
1227                         if (op->descrip[1] == '*')
1228                                 op->descrip = negated ? "a*" : "r*";
1229                         else if (!is_wild)
1230                                 op->descrip = negated ? "a=" : "r=";
1231                         found_match = 1;
1232                         if (!is_wild)
1233                                 break;
1234                 }
1235         }
1236
1237         if (!found_match)
1238                 rprintf(FLOG, "No match for refuse-options string \"%s\"\n", ref);
1239 }
1240
1241
1242 /**
1243  * Tweak the option table to disable all options that the rsyncd.conf
1244  * file has told us to refuse.
1245  **/
1246 static void set_refuse_options(void)
1247 {
1248         struct poptOption *op, *list_end = NULL;
1249         char *cp, *ref = lp_refuse_options(module_id);
1250         int negated;
1251
1252         if (!ref)
1253                 ref = "";
1254
1255         if (!*ref && !am_daemon) /* A simple optimization */
1256                 return;
1257
1258         /* We abuse the descrip field in poptOption to make it easy to flag which options
1259          * are refused (since we don't use it otherwise).  Start by marking all options
1260          * as "a"ccepted with a few options also marked as non-wild. */
1261         for (op = long_options; ; op++) {
1262                 const char *longName = op->longName ? op->longName : "";
1263                 if (!op->longName && !op->shortName) {
1264                         list_end = op;
1265                         break;
1266                 }
1267                 if (op->shortName == 'e' /* Required for compatibility flags */
1268                  || op->shortName == '0' /* --from0 just modifies --files-from, so refuse that instead (or not) */
1269                  || op->shortName == 's' /* --protect-args is always OK */
1270                  || op->shortName == 'n' /* --dry-run is always OK */
1271                  || strcmp("iconv", longName) == 0
1272                  || strcmp("no-iconv", longName) == 0
1273                  || strcmp("checksum-seed", longName) == 0
1274                  || strcmp("write-devices", longName) == 0 /* disable wild-match (it gets refused below) */
1275                  || strcmp("log-format", longName) == 0 /* aka out-format (NOT log-file-format) */
1276                  || strcmp("sender", longName) == 0
1277                  || strcmp("server", longName) == 0)
1278                         op->descrip = "a="; /* exact-match only */
1279                 else
1280                         op->descrip = "a*"; /* wild-card-able */
1281         }
1282         assert(list_end != NULL);
1283
1284         if (am_daemon) /* Refused by default, but can be accepted via "!write-devices" */
1285                 parse_one_refuse_match(0, "write-devices", list_end);
1286
1287         while (1) {
1288                 while (*ref == ' ') ref++;
1289                 if (!*ref)
1290                         break;
1291                 if ((cp = strchr(ref, ' ')) != NULL)
1292                         *cp = '\0';
1293                 negated = *ref == '!';
1294                 if (negated && ref[1])
1295                         ref++;
1296                 parse_one_refuse_match(negated, ref, list_end);
1297                 if (!cp)
1298                         break;
1299                 *cp = ' ';
1300                 ref = cp + 1;
1301         }
1302
1303         if (am_daemon) {
1304 #ifdef ICONV_OPTION
1305                 if (!*lp_charset(module_id))
1306                         parse_one_refuse_match(0, "iconv", list_end);
1307 #endif
1308                 parse_one_refuse_match(0, "log-file*", list_end);
1309         }
1310
1311         /* Now we use the descrip values to actually mark the options for refusal. */
1312         for (op = long_options; op != list_end; op++) {
1313                 int refused = op->descrip[0] == 'r';
1314                 op->descrip = NULL;
1315                 if (!refused)
1316                         continue;
1317                 if (op->argInfo == POPT_ARG_VAL)
1318                         op->argInfo = POPT_ARG_NONE;
1319                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1320                 /* The following flags are set to let us easily check an implied option later in the code. */
1321                 switch (op->shortName) {
1322                 case 'r': case 'd': case 'l': case 'p':
1323                 case 't': case 'g': case 'o': case 'D':
1324                         refused_archive_part = op->val;
1325                         break;
1326                 case 'z':
1327                         refused_compress = op->val;
1328                         break;
1329                 case '\0':
1330                         if (strcmp("delete", op->longName) == 0)
1331                                 refused_delete = op->val;
1332                         else if (strcmp("delete-before", op->longName) == 0)
1333                                 refused_delete_before = op->val;
1334                         else if (strcmp("delete-during", op->longName) == 0)
1335                                 refused_delete_during = op->val;
1336                         else if (strcmp("partial", op->longName) == 0)
1337                                 refused_partial = op->val;
1338                         else if (strcmp("progress", op->longName) == 0)
1339                                 refused_progress = op->val;
1340                         else if (strcmp("inplace", op->longName) == 0)
1341                                 refused_inplace = op->val;
1342                         else if (strcmp("no-iconv", op->longName) == 0)
1343                                 refused_no_iconv = op->val;
1344                         break;
1345                 }
1346         }
1347 }
1348
1349
1350 static int count_args(const char **argv)
1351 {
1352         int i = 0;
1353
1354         if (argv) {
1355                 while (argv[i] != NULL)
1356                         i++;
1357         }
1358
1359         return i;
1360 }
1361
1362
1363 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1364 {
1365         int reps, mult, make_compatible = 0;
1366         const char *arg;
1367         OFF_T size = 1;
1368
1369         for (arg = *size_arg; isDigit(arg); arg++) {}
1370         if (*arg == '.')
1371                 for (arg++; isDigit(arg); arg++) {}
1372         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1373         case 'b': case 'B':
1374                 reps = 0;
1375                 break;
1376         case 'k': case 'K':
1377                 reps = 1;
1378                 break;
1379         case 'm': case 'M':
1380                 reps = 2;
1381                 break;
1382         case 'g': case 'G':
1383                 reps = 3;
1384                 break;
1385         default:
1386                 return -1;
1387         }
1388         if (*arg == 'b' || *arg == 'B')
1389                 mult = 1000, make_compatible = 1, arg++;
1390         else if (!*arg || *arg == '+' || *arg == '-')
1391                 mult = 1024;
1392         else if (strncasecmp(arg, "ib", 2) == 0)
1393                 mult = 1024, arg += 2;
1394         else
1395                 return -1;
1396         while (reps--)
1397                 size *= mult;
1398         size *= atof(*size_arg);
1399         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1400                 size += atoi(arg), make_compatible = 1, arg += 2;
1401         if (*arg)
1402                 return -1;
1403         if (size > 0 && make_compatible && def_suf == 'b') {
1404                 /* We convert this manually because we may need %lld precision,
1405                  * and that's not a portable sprintf() escape. */
1406                 char buf[128], *s = buf + sizeof buf - 1;
1407                 OFF_T num = size;
1408                 *s = '\0';
1409                 while (num) {
1410                         *--s = (char)(num % 10) + '0';
1411                         num /= 10;
1412                 }
1413                 if (!(*size_arg = strdup(s)))
1414                         out_of_memory("parse_size_arg");
1415         }
1416         return size;
1417 }
1418
1419
1420 static void create_refuse_error(int which)
1421 {
1422         /* The "which" value is the index + OPT_REFUSED_BASE. */
1423         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1424         int n = snprintf(err_buf, sizeof err_buf,
1425                          "The server is configured to refuse --%s\n",
1426                          op->longName) - 1;
1427         if (op->shortName) {
1428                 snprintf(err_buf + n, sizeof err_buf - n,
1429                          " (-%c)\n", op->shortName);
1430         }
1431 }
1432
1433 /* This is used to make sure that --daemon & --server cannot be aliased to
1434  * something else. These options have always disabled popt aliases for the
1435  * parsing of a daemon or server command-line, but we have to make sure that
1436  * these options cannot vanish so that the alias disabling can take effect. */
1437 static void popt_unalias(poptContext con, const char *opt)
1438 {
1439         struct poptAlias unalias;
1440
1441         unalias.longName = opt + 2; /* point past the leading "--" */
1442         unalias.shortName = '\0';
1443         unalias.argc = 1;
1444         unalias.argv = new_array(const char*, 1);
1445         unalias.argv[0] = strdup(opt);
1446
1447         poptAddAlias(con, unalias, 0);
1448 }
1449
1450 /**
1451  * Process command line arguments.  Called on both local and remote.
1452  *
1453  * @retval 1 if all options are OK; with globals set to appropriate
1454  * values
1455  *
1456  * @retval 0 on error, with err_buf containing an explanation
1457  **/
1458 int parse_arguments(int *argc_p, const char ***argv_p)
1459 {
1460         static poptContext pc;
1461         const char *arg, **argv = *argv_p;
1462         int argc = *argc_p;
1463         int opt;
1464         int orig_protect_args = protect_args;
1465
1466         if (argc == 0) {
1467                 strlcpy(err_buf, "argc is zero!\n", sizeof err_buf);
1468                 return 0;
1469         }
1470
1471         set_refuse_options();
1472
1473 #ifdef ICONV_OPTION
1474         if (!am_daemon && protect_args <= 0 && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1475                 iconv_opt = strdup(arg);
1476 #endif
1477
1478         /* TODO: Call poptReadDefaultConfig; handle errors. */
1479
1480         /* The context leaks in case of an error, but if there's a
1481          * problem we always exit anyhow. */
1482         if (pc)
1483                 poptFreeContext(pc);
1484         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1485         if (!am_server) {
1486                 poptReadDefaultConfig(pc, 0);
1487                 popt_unalias(pc, "--daemon");
1488                 popt_unalias(pc, "--server");
1489         }
1490
1491         while ((opt = poptGetNextOpt(pc)) != -1) {
1492                 /* most options are handled automatically by popt;
1493                  * only special cases are returned and listed here. */
1494
1495                 switch (opt) {
1496                 case 'V':
1497                         print_rsync_version(FINFO);
1498                         exit_cleanup(0);
1499
1500                 case OPT_SERVER:
1501                         if (!am_server) {
1502                                 /* Disable popt aliases on the server side and
1503                                  * then start parsing the options again. */
1504                                 poptFreeContext(pc);
1505                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1506                                                     long_options, 0);
1507                                 am_server = 1;
1508                         }
1509 #ifdef ICONV_OPTION
1510                         iconv_opt = NULL;
1511 #endif
1512                         break;
1513
1514                 case OPT_SENDER:
1515                         if (!am_server) {
1516                                 usage(FERROR);
1517                                 exit_cleanup(RERR_SYNTAX);
1518                         }
1519                         am_sender = 1;
1520                         break;
1521
1522                 case OPT_DAEMON:
1523                         if (am_daemon) {
1524                                 strlcpy(err_buf,
1525                                         "Attempt to hack rsync thwarted!\n",
1526                                         sizeof err_buf);
1527                                 return 0;
1528                         }
1529 #ifdef ICONV_OPTION
1530                         iconv_opt = NULL;
1531 #endif
1532                         protect_args = 0;
1533                         poptFreeContext(pc);
1534                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1535                                             long_daemon_options, 0);
1536                         while ((opt = poptGetNextOpt(pc)) != -1) {
1537                                 char **cpp;
1538                                 switch (opt) {
1539                                 case 'h':
1540                                         daemon_usage(FINFO);
1541                                         exit_cleanup(0);
1542
1543                                 case 'M':
1544                                         arg = poptGetOptArg(pc);
1545                                         if (!strchr(arg, '=')) {
1546                                                 rprintf(FERROR,
1547                                                     "--dparam value is missing an '=': %s\n",
1548                                                     arg);
1549                                                 goto daemon_error;
1550                                         }
1551                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1552                                         *cpp = strdup(arg);
1553                                         break;
1554
1555                                 case 'v':
1556                                         verbose++;
1557                                         break;
1558
1559                                 default:
1560                                         rprintf(FERROR,
1561                                             "rsync: %s: %s (in daemon mode)\n",
1562                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1563                                             poptStrerror(opt));
1564                                         goto daemon_error;
1565                                 }
1566                         }
1567
1568                         if (dparam_list.count && !set_dparams(1))
1569                                 exit_cleanup(RERR_SYNTAX);
1570
1571                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1572                                 snprintf(err_buf, sizeof err_buf,
1573                                          "the --temp-dir path is WAY too long.\n");
1574                                 return 0;
1575                         }
1576
1577                         if (!daemon_opt) {
1578                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1579                             daemon_error:
1580                                 rprintf(FERROR,
1581                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1582                                 exit_cleanup(RERR_SYNTAX);
1583                         }
1584
1585                         *argv_p = argv = poptGetArgs(pc);
1586                         *argc_p = argc = count_args(argv);
1587                         am_starting_up = 0;
1588                         daemon_opt = 0;
1589                         am_daemon = 1;
1590                         return 1;
1591
1592                 case OPT_MODIFY_WINDOW:
1593                         /* The value has already been set by popt, but
1594                          * we need to remember that we're using a
1595                          * non-default setting. */
1596                         modify_window_set = 1;
1597                         break;
1598
1599                 case OPT_FILTER:
1600                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1601                                         rule_template(0), 0);
1602                         break;
1603
1604                 case OPT_EXCLUDE:
1605                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1606                                         rule_template(0), XFLG_OLD_PREFIXES);
1607                         break;
1608
1609                 case OPT_INCLUDE:
1610                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1611                                         rule_template(FILTRULE_INCLUDE), XFLG_OLD_PREFIXES);
1612                         break;
1613
1614                 case OPT_EXCLUDE_FROM:
1615                 case OPT_INCLUDE_FROM:
1616                         arg = poptGetOptArg(pc);
1617                         if (sanitize_paths)
1618                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1619                         if (daemon_filter_list.head) {
1620                                 int rej;
1621                                 char *cp = strdup(arg);
1622                                 if (!cp)
1623                                         out_of_memory("parse_arguments");
1624                                 if (!*cp)
1625                                         rej = 1;
1626                                 else {
1627                                         char *dir = cp + (*cp == '/' ? module_dirlen : 0);
1628                                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1629                                         rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1630                                 }
1631                                 free(cp);
1632                                 if (rej)
1633                                         goto options_rejected;
1634                         }
1635                         parse_filter_file(&filter_list, arg,
1636                                 rule_template(opt == OPT_INCLUDE_FROM ? FILTRULE_INCLUDE : 0),
1637                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1638                         break;
1639
1640                 case 'a':
1641                         if (refused_archive_part) {
1642                                 create_refuse_error(refused_archive_part);
1643                                 return 0;
1644                         }
1645                         if (!recurse) /* preserve recurse == 2 */
1646                                 recurse = 1;
1647 #ifdef SUPPORT_LINKS
1648                         preserve_links = 1;
1649 #endif
1650                         preserve_perms = 1;
1651                         preserve_times = 1;
1652                         preserve_gid = 1;
1653                         preserve_uid = 1;
1654                         preserve_devices = 1;
1655                         preserve_specials = 1;
1656                         break;
1657
1658                 case 'D':
1659                         preserve_devices = preserve_specials = 1;
1660                         break;
1661
1662                 case OPT_NO_D:
1663                         preserve_devices = preserve_specials = 0;
1664                         break;
1665
1666                 case 'h':
1667                         human_readable++;
1668                         break;
1669
1670                 case 'H':
1671                         preserve_hard_links++;
1672                         break;
1673
1674                 case 'i':
1675                         itemize_changes++;
1676                         break;
1677
1678                 case 'U':
1679                         if (++preserve_atimes > 1)
1680                                 open_noatime = 1;
1681                         break;
1682
1683                 case 'v':
1684                         verbose++;
1685                         break;
1686
1687                 case 'y':
1688                         fuzzy_basis++;
1689                         break;
1690
1691                 case 'q':
1692                         quiet++;
1693                         break;
1694
1695                 case 'x':
1696                         one_file_system++;
1697                         break;
1698
1699                 case 'F':
1700                         switch (++F_option_cnt) {
1701                         case 1:
1702                                 parse_filter_str(&filter_list,": /.rsync-filter",rule_template(0),0);
1703                                 break;
1704                         case 2:
1705                                 parse_filter_str(&filter_list,"- .rsync-filter",rule_template(0),0);
1706                                 break;
1707                         }
1708                         break;
1709
1710                 case 'P':
1711                         if (refused_partial || refused_progress) {
1712                                 create_refuse_error(refused_partial
1713                                     ? refused_partial : refused_progress);
1714                                 return 0;
1715                         }
1716                         do_progress = 1;
1717                         keep_partial = 1;
1718                         break;
1719
1720                 case 'z':
1721                         do_compression++;
1722                         break;
1723
1724                 case OPT_OLD_COMPRESS:
1725                         compress_choice = "zlib";
1726                         break;
1727
1728                 case OPT_NEW_COMPRESS:
1729                         compress_choice = "zlibx";
1730                         break;
1731
1732                 case OPT_NO_COMPRESS:
1733                         do_compression = 0;
1734                         compress_choice = NULL;
1735                         break;
1736
1737                 case 'M':
1738                         arg = poptGetOptArg(pc);
1739                         if (*arg != '-') {
1740                                 snprintf(err_buf, sizeof err_buf,
1741                                         "Remote option must start with a dash: %s\n", arg);
1742                                 return 0;
1743                         }
1744                         if (remote_option_cnt+2 >= remote_option_alloc) {
1745                                 remote_option_alloc += 16;
1746                                 remote_options = realloc_array(remote_options,
1747                                                         const char *, remote_option_alloc);
1748                                 if (!remote_options)
1749                                         out_of_memory("parse_arguments");
1750                                 if (!remote_option_cnt)
1751                                         remote_options[0] = "ARG0";
1752                         }
1753                         remote_options[++remote_option_cnt] = arg;
1754                         remote_options[remote_option_cnt+1] = NULL;
1755                         break;
1756
1757                 case OPT_WRITE_BATCH:
1758                         /* batch_name is already set */
1759                         write_batch = 1;
1760                         break;
1761
1762                 case OPT_ONLY_WRITE_BATCH:
1763                         /* batch_name is already set */
1764                         write_batch = -1;
1765                         break;
1766
1767                 case OPT_READ_BATCH:
1768                         /* batch_name is already set */
1769                         read_batch = 1;
1770                         break;
1771
1772                 case OPT_NO_ICONV:
1773 #ifdef ICONV_OPTION
1774                         iconv_opt = NULL;
1775 #endif
1776                         break;
1777
1778                 case OPT_MAX_SIZE:
1779                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) < 0) {
1780                                 snprintf(err_buf, sizeof err_buf,
1781                                         "--max-size value is invalid: %s\n",
1782                                         max_size_arg);
1783                                 return 0;
1784                         }
1785                         break;
1786
1787                 case OPT_MIN_SIZE:
1788                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) < 0) {
1789                                 snprintf(err_buf, sizeof err_buf,
1790                                         "--min-size value is invalid: %s\n",
1791                                         min_size_arg);
1792                                 return 0;
1793                         }
1794                         break;
1795
1796                 case OPT_BWLIMIT:
1797                         {
1798                                 OFF_T limit = parse_size_arg(&bwlimit_arg, 'K');
1799                                 if (limit < 0) {
1800                                         snprintf(err_buf, sizeof err_buf,
1801                                                 "--bwlimit value is invalid: %s\n", bwlimit_arg);
1802                                         return 0;
1803                                 }
1804                                 bwlimit = (limit + 512) / 1024;
1805                                 if (limit && !bwlimit) {
1806                                         snprintf(err_buf, sizeof err_buf,
1807                                                 "--bwlimit value is too small: %s\n", bwlimit_arg);
1808                                         return 0;
1809                                 }
1810                         }
1811                         break;
1812
1813                 case OPT_APPEND:
1814                         if (am_server)
1815                                 append_mode++;
1816                         else
1817                                 append_mode = 1;
1818                         break;
1819
1820                 case OPT_LINK_DEST:
1821 #ifdef SUPPORT_HARD_LINKS
1822                         link_dest = 1;
1823                         dest_option = "--link-dest";
1824                         goto set_dest_dir;
1825 #else
1826                         snprintf(err_buf, sizeof err_buf,
1827                                  "hard links are not supported on this %s\n",
1828                                  am_server ? "server" : "client");
1829                         return 0;
1830 #endif
1831
1832                 case OPT_COPY_DEST:
1833                         copy_dest = 1;
1834                         dest_option = "--copy-dest";
1835                         goto set_dest_dir;
1836
1837                 case OPT_COMPARE_DEST:
1838                         compare_dest = 1;
1839                         dest_option = "--compare-dest";
1840                 set_dest_dir:
1841                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1842                                 snprintf(err_buf, sizeof err_buf,
1843                                         "ERROR: at most %d %s args may be specified\n",
1844                                         MAX_BASIS_DIRS, dest_option);
1845                                 return 0;
1846                         }
1847                         /* We defer sanitizing this arg until we know what
1848                          * our destination directory is going to be. */
1849                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1850                         break;
1851
1852                 case OPT_CHMOD:
1853                         arg = poptGetOptArg(pc);
1854                         if (!parse_chmod(arg, &chmod_modes)) {
1855                                 snprintf(err_buf, sizeof err_buf,
1856                                     "Invalid argument passed to --chmod (%s)\n",
1857                                     arg);
1858                                 return 0;
1859                         }
1860                         break;
1861
1862                 case OPT_INFO:
1863                         arg = poptGetOptArg(pc);
1864                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1865                         break;
1866
1867                 case OPT_DEBUG:
1868                         arg = poptGetOptArg(pc);
1869                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1870                         break;
1871
1872                 case OPT_USERMAP:
1873                         if (usermap) {
1874                                 if (usermap_via_chown) {
1875                                         snprintf(err_buf, sizeof err_buf,
1876                                             "--usermap conflicts with prior --chown.\n");
1877                                         return 0;
1878                                 }
1879                                 snprintf(err_buf, sizeof err_buf,
1880                                     "You can only specify --usermap once.\n");
1881                                 return 0;
1882                         }
1883                         usermap = (char *)poptGetOptArg(pc);
1884                         usermap_via_chown = False;
1885                         break;
1886
1887                 case OPT_GROUPMAP:
1888                         if (groupmap) {
1889                                 if (groupmap_via_chown) {
1890                                         snprintf(err_buf, sizeof err_buf,
1891                                             "--groupmap conflicts with prior --chown.\n");
1892                                         return 0;
1893                                 }
1894                                 snprintf(err_buf, sizeof err_buf,
1895                                     "You can only specify --groupmap once.\n");
1896                                 return 0;
1897                         }
1898                         groupmap = (char *)poptGetOptArg(pc);
1899                         groupmap_via_chown = False;
1900                         break;
1901
1902                 case OPT_CHOWN: {
1903                         const char *chown = poptGetOptArg(pc);
1904                         int len;
1905                         if ((arg = strchr(chown, ':')) != NULL)
1906                                 len = arg++ - chown;
1907                         else
1908                                 len = strlen(chown);
1909                         if (len) {
1910                                 if (usermap) {
1911                                         if (!usermap_via_chown) {
1912                                                 snprintf(err_buf, sizeof err_buf,
1913                                                     "--chown conflicts with prior --usermap.\n");
1914                                                 return 0;
1915                                         }
1916                                         snprintf(err_buf, sizeof err_buf,
1917                                             "You can only specify a user-affecting --chown once.\n");
1918                                         return 0;
1919                                 }
1920                                 if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
1921                                         out_of_memory("parse_arguments");
1922                                 usermap_via_chown = True;
1923                         }
1924                         if (arg && *arg) {
1925                                 if (groupmap) {
1926                                         if (!groupmap_via_chown) {
1927                                                 snprintf(err_buf, sizeof err_buf,
1928                                                     "--chown conflicts with prior --groupmap.\n");
1929                                                 return 0;
1930                                         }
1931                                         snprintf(err_buf, sizeof err_buf,
1932                                             "You can only specify a group-affecting --chown once.\n");
1933                                         return 0;
1934                                 }
1935                                 if (asprintf(&groupmap, "*:%s", arg) < 0)
1936                                         out_of_memory("parse_arguments");
1937                                 groupmap_via_chown = True;
1938                         }
1939                         break;
1940                 }
1941
1942                 case OPT_HELP:
1943                         usage(FINFO);
1944                         exit_cleanup(0);
1945
1946                 case 'A':
1947 #ifdef SUPPORT_ACLS
1948                         preserve_acls = 1;
1949                         preserve_perms = 1;
1950                         break;
1951 #else
1952                         /* FIXME: this should probably be ignored with a
1953                          * warning and then countermeasures taken to
1954                          * restrict group and other access in the presence
1955                          * of any more restrictive ACLs, but this is safe
1956                          * for now */
1957                         snprintf(err_buf,sizeof(err_buf),
1958                                  "ACLs are not supported on this %s\n",
1959                                  am_server ? "server" : "client");
1960                         return 0;
1961 #endif
1962
1963                 case 'X':
1964 #ifdef SUPPORT_XATTRS
1965                         preserve_xattrs++;
1966                         break;
1967 #else
1968                         snprintf(err_buf,sizeof(err_buf),
1969                                  "extended attributes are not supported on this %s\n",
1970                                  am_server ? "server" : "client");
1971                         return 0;
1972 #endif
1973
1974                 default:
1975                         /* A large opt value means that set_refuse_options()
1976                          * turned this option off. */
1977                         if (opt >= OPT_REFUSED_BASE) {
1978                                 create_refuse_error(opt);
1979                                 return 0;
1980                         }
1981                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1982                                  am_server ? "on remote machine: " : "",
1983                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1984                                  poptStrerror(opt));
1985                         return 0;
1986                 }
1987         }
1988
1989         if (protect_args < 0) {
1990                 if (am_server)
1991                         protect_args = 0;
1992                 else if ((arg = getenv("RSYNC_PROTECT_ARGS")) != NULL && *arg)
1993                         protect_args = atoi(arg) ? 1 : 0;
1994                 else {
1995 #ifdef RSYNC_USE_PROTECTED_ARGS
1996                         protect_args = 1;
1997 #else
1998                         protect_args = 0;
1999 #endif
2000                 }
2001         }
2002
2003         if (checksum_choice && strcasecmp(checksum_choice, "auto") != 0 && strcasecmp(checksum_choice, "auto,auto") != 0) {
2004                 /* Call this early to verify the args and figure out if we need to force
2005                  * --whole-file. Note that the parse function will get called again later,
2006                  * just in case an "auto" choice needs to know the protocol_version. */
2007                 parse_checksum_choice(0);
2008         } else
2009                 checksum_choice = NULL;
2010
2011         if (human_readable > 1 && argc == 2 && !am_server) {
2012                 /* Allow the old meaning of 'h' (--help) on its own. */
2013                 usage(FINFO);
2014                 exit_cleanup(0);
2015         }
2016
2017         if (!compress_choice && do_compression > 1)
2018                 compress_choice = "zlibx";
2019         if (compress_choice && strcasecmp(compress_choice, "auto") != 0)
2020                 parse_compress_choice(0); /* Twiddles do_compression and can possibly NULL-out compress_choice. */
2021         else
2022                 compress_choice = NULL;
2023
2024         if (do_compression || do_compression_level != CLVL_NOT_SPECIFIED) {
2025                 if (!do_compression)
2026                         do_compression = CPRES_AUTO;
2027                 if (do_compression && refused_compress) {
2028                         create_refuse_error(refused_compress);
2029                         return 0;
2030                 }
2031         }
2032
2033 #ifdef HAVE_SETVBUF
2034         if (outbuf_mode && !am_server) {
2035                 int mode = *(uchar *)outbuf_mode;
2036                 if (islower(mode))
2037                         mode = toupper(mode);
2038                 fflush(stdout); /* Just in case... */
2039                 switch (mode) {
2040                 case 'N': /* None */
2041                 case 'U': /* Unbuffered */
2042                         mode = _IONBF;
2043                         break;
2044                 case 'L': /* Line */
2045                         mode = _IOLBF;
2046                         break;
2047                 case 'B': /* Block */
2048                 case 'F': /* Full */
2049                         mode = _IOFBF;
2050                         break;
2051                 default:
2052                         snprintf(err_buf, sizeof err_buf,
2053                                 "Invalid --outbuf setting -- specify N, L, or B.\n");
2054                         return 0;
2055                 }
2056                 setvbuf(stdout, (char *)NULL, mode, 0);
2057         }
2058
2059         if (msgs2stderr) {
2060                 /* Make stderr line buffered for better sharing of the stream. */
2061                 fflush(stderr); /* Just in case... */
2062                 setvbuf(stderr, (char *)NULL, _IOLBF, 0);
2063         }
2064 #endif
2065
2066         set_output_verbosity(verbose, DEFAULT_PRIORITY);
2067
2068         if (do_stats) {
2069                 parse_output_words(info_words, info_levels,
2070                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
2071         }
2072
2073 #ifdef ICONV_OPTION
2074         if (iconv_opt && protect_args != 2) {
2075                 if (!am_server && strcmp(iconv_opt, "-") == 0)
2076                         iconv_opt = NULL;
2077                 else
2078                         need_unsorted_flist = 1;
2079         }
2080         if (refused_no_iconv && !iconv_opt) {
2081                 create_refuse_error(refused_no_iconv);
2082                 return 0;
2083         }
2084 #endif
2085
2086         if (fuzzy_basis > 1)
2087                 fuzzy_basis = basis_dir_cnt + 1;
2088
2089         /* Don't let the client reset protect_args if it was already processed */
2090         if (orig_protect_args == 2 && am_server)
2091                 protect_args = orig_protect_args;
2092
2093         if (protect_args == 1 && am_server)
2094                 return 1;
2095
2096         *argv_p = argv = poptGetArgs(pc);
2097         *argc_p = argc = count_args(argv);
2098
2099 #ifndef SUPPORT_LINKS
2100         if (preserve_links && !am_sender) {
2101                 snprintf(err_buf, sizeof err_buf,
2102                          "symlinks are not supported on this %s\n",
2103                          am_server ? "server" : "client");
2104                 return 0;
2105         }
2106 #endif
2107
2108 #ifndef SUPPORT_HARD_LINKS
2109         if (preserve_hard_links) {
2110                 snprintf(err_buf, sizeof err_buf,
2111                          "hard links are not supported on this %s\n",
2112                          am_server ? "server" : "client");
2113                 return 0;
2114         }
2115 #endif
2116
2117 #ifdef SUPPORT_XATTRS
2118         if (am_root < 0 && preserve_xattrs > 1) {
2119                 snprintf(err_buf, sizeof err_buf,
2120                          "--fake-super conflicts with -XX\n");
2121                 return 0;
2122         }
2123 #else
2124         if (am_root < 0) {
2125                 snprintf(err_buf, sizeof err_buf,
2126                          "--fake-super requires an rsync with extended attributes enabled\n");
2127                 return 0;
2128         }
2129 #endif
2130
2131         if (block_size) {
2132                 /* We may not know the real protocol_version at this point if this is the client
2133                  * option parsing, but we still want to check it so that the client can specify
2134                  * a --protocol=29 option with a larger block size. */
2135                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
2136
2137                 if (block_size > max_blength) {
2138                         snprintf(err_buf, sizeof err_buf,
2139                                  "--block-size=%lu is too large (max: %u)\n", block_size, max_blength);
2140                         return 0;
2141                 }
2142         }
2143
2144         if (write_batch && read_batch) {
2145                 snprintf(err_buf, sizeof err_buf,
2146                         "--write-batch and --read-batch can not be used together\n");
2147                 return 0;
2148         }
2149         if (write_batch > 0 || read_batch) {
2150                 if (am_server) {
2151                         rprintf(FINFO,
2152                                 "ignoring --%s-batch option sent to server\n",
2153                                 write_batch ? "write" : "read");
2154                         /* We don't actually exit_cleanup(), so that we can
2155                          * still service older version clients that still send
2156                          * batch args to server. */
2157                         read_batch = write_batch = 0;
2158                         batch_name = NULL;
2159                 } else if (dry_run)
2160                         write_batch = 0;
2161         } else if (write_batch < 0 && dry_run)
2162                 write_batch = 0;
2163         if (read_batch && files_from) {
2164                 snprintf(err_buf, sizeof err_buf,
2165                         "--read-batch cannot be used with --files-from\n");
2166                 return 0;
2167         }
2168         if (read_batch && remove_source_files) {
2169                 snprintf(err_buf, sizeof err_buf,
2170                         "--read-batch cannot be used with --remove-%s-files\n",
2171                         remove_source_files == 1 ? "source" : "sent");
2172                 return 0;
2173         }
2174         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
2175                 snprintf(err_buf, sizeof err_buf,
2176                         "the batch-file name must be %d characters or less.\n",
2177                         MAX_BATCH_NAME_LEN);
2178                 return 0;
2179         }
2180
2181         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
2182                 snprintf(err_buf, sizeof err_buf,
2183                          "the --temp-dir path is WAY too long.\n");
2184                 return 0;
2185         }
2186
2187         if (max_delete < 0 && max_delete != INT_MIN) {
2188                 /* Negative numbers are treated as "no deletions". */
2189                 max_delete = 0;
2190         }
2191
2192         if (compare_dest + copy_dest + link_dest > 1) {
2193                 snprintf(err_buf, sizeof err_buf,
2194                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
2195                 return 0;
2196         }
2197
2198         if (files_from) {
2199                 if (recurse == 1) /* preserve recurse == 2 */
2200                         recurse = 0;
2201                 if (xfer_dirs < 0)
2202                         xfer_dirs = 1;
2203         }
2204
2205         if (argc < 2 && !read_batch && !am_server)
2206                 list_only |= 1;
2207
2208         if (xfer_dirs >= 4) {
2209                 parse_filter_str(&filter_list, "- /*/*", rule_template(0), 0);
2210                 recurse = xfer_dirs = 1;
2211         } else if (recurse)
2212                 xfer_dirs = 1;
2213         else if (xfer_dirs < 0)
2214                 xfer_dirs = list_only ? 1 : 0;
2215
2216         if (relative_paths < 0)
2217                 relative_paths = files_from? 1 : 0;
2218         if (!relative_paths)
2219                 implied_dirs = 0;
2220
2221         if (delete_before + !!delete_during + delete_after > 1) {
2222                 snprintf(err_buf, sizeof err_buf,
2223                         "You may not combine multiple --delete-WHEN options.\n");
2224                 return 0;
2225         }
2226         if (delete_before || delete_during || delete_after)
2227                 delete_mode = 1;
2228         else if (delete_mode || delete_excluded) {
2229                 /* Only choose now between before & during if one is refused. */
2230                 if (refused_delete_before) {
2231                         if (!refused_delete_during)
2232                                 delete_during = 1;
2233                         else {
2234                                 create_refuse_error(refused_delete_before);
2235                                 return 0;
2236                         }
2237                 } else if (refused_delete_during)
2238                         delete_before = 1;
2239                 delete_mode = 1;
2240         }
2241         if (!xfer_dirs && delete_mode) {
2242                 snprintf(err_buf, sizeof err_buf,
2243                         "--delete does not work without --recursive (-r) or --dirs (-d).\n");
2244                 return 0;
2245         }
2246
2247         if (missing_args == 3) /* simplify if both options were specified */
2248                 missing_args = 2;
2249         if (refused_delete && (delete_mode || missing_args == 2)) {
2250                 create_refuse_error(refused_delete);
2251                 return 0;
2252         }
2253
2254         if (remove_source_files) {
2255                 /* We only want to infer this refusal of --remove-source-files
2256                  * via the refusal of "delete", not any of the "delete-FOO"
2257                  * options. */
2258                 if (refused_delete && am_sender) {
2259                         create_refuse_error(refused_delete);
2260                         return 0;
2261                 }
2262                 need_messages_from_generator = 1;
2263         }
2264
2265         if (munge_symlinks && !am_daemon) {
2266                 STRUCT_STAT st;
2267                 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
2268                 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
2269                 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
2270                         rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
2271                                 prefix);
2272                         exit_cleanup(RERR_UNSUPPORTED);
2273                 }
2274         }
2275
2276         if (sanitize_paths) {
2277                 int i;
2278                 for (i = argc; i-- > 0; )
2279                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
2280                 if (tmpdir)
2281                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
2282                 if (backup_dir)
2283                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
2284         }
2285         if (daemon_filter_list.head && !am_sender) {
2286                 filter_rule_list *elp = &daemon_filter_list;
2287                 if (tmpdir) {
2288                         char *dir;
2289                         if (!*tmpdir)
2290                                 goto options_rejected;
2291                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
2292                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2293                         if (check_filter(elp, FLOG, dir, 1) < 0)
2294                                 goto options_rejected;
2295                 }
2296                 if (backup_dir) {
2297                         char *dir;
2298                         if (!*backup_dir)
2299                                 goto options_rejected;
2300                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
2301                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2302                         if (check_filter(elp, FLOG, dir, 1) < 0)
2303                                 goto options_rejected;
2304                 }
2305         }
2306
2307         if (!backup_suffix)
2308                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
2309         backup_suffix_len = strlen(backup_suffix);
2310         if (strchr(backup_suffix, '/') != NULL) {
2311                 snprintf(err_buf, sizeof err_buf,
2312                         "--suffix cannot contain slashes: %s\n",
2313                         backup_suffix);
2314                 return 0;
2315         }
2316         if (backup_dir) {
2317                 size_t len;
2318                 while (*backup_dir == '.' && backup_dir[1] == '/')
2319                         backup_dir += 2;
2320                 if (*backup_dir == '.' && backup_dir[1] == '\0')
2321                         backup_dir++;
2322                 len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
2323                 if (len > sizeof backup_dir_buf - 128) {
2324                         snprintf(err_buf, sizeof err_buf,
2325                                 "the --backup-dir path is WAY too long.\n");
2326                         return 0;
2327                 }
2328                 backup_dir_len = (int)len;
2329                 if (!backup_dir_len) {
2330                         backup_dir_len = -1;
2331                         backup_dir = NULL;
2332                 } else if (backup_dir_buf[backup_dir_len - 1] != '/') {
2333                         backup_dir_buf[backup_dir_len++] = '/';
2334                         backup_dir_buf[backup_dir_len] = '\0';
2335                 }
2336                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
2337         }
2338         if (backup_dir) {
2339                 /* No need for a suffix or a protect rule. */
2340         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
2341                 snprintf(err_buf, sizeof err_buf,
2342                         "--suffix cannot be empty %s\n", backup_dir_len < 0
2343                         ? "when --backup-dir is the same as the dest dir"
2344                         : "without a --backup-dir");
2345                 return 0;
2346         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
2347                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
2348                         "P *%s", backup_suffix);
2349                 parse_filter_str(&filter_list, backup_dir_buf, rule_template(0), 0);
2350         }
2351
2352         if (preserve_times) {
2353                 preserve_times = PRESERVE_FILE_TIMES;
2354                 if (!omit_dir_times)
2355                         preserve_times |= PRESERVE_DIR_TIMES;
2356 #ifdef CAN_SET_SYMLINK_TIMES
2357                 if (!omit_link_times)
2358                         preserve_times |= PRESERVE_LINK_TIMES;
2359 #endif
2360         }
2361
2362         if (make_backups && !backup_dir) {
2363                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
2364                 preserve_times &= ~PRESERVE_DIR_TIMES;
2365         }
2366
2367         if (stdout_format) {
2368                 if (am_server && log_format_has(stdout_format, 'I'))
2369                         stdout_format_has_i = 2;
2370                 else if (log_format_has(stdout_format, 'i'))
2371                         stdout_format_has_i = itemize_changes | 1;
2372                 if (!log_format_has(stdout_format, 'b')
2373                  && !log_format_has(stdout_format, 'c')
2374                  && !log_format_has(stdout_format, 'C'))
2375                         log_before_transfer = !am_server;
2376         } else if (itemize_changes) {
2377                 stdout_format = "%i %n%L";
2378                 stdout_format_has_i = itemize_changes;
2379                 log_before_transfer = !am_server;
2380         }
2381
2382         if (do_progress && !am_server) {
2383                 if (!log_before_transfer && INFO_EQ(NAME, 0))
2384                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
2385                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
2386         }
2387
2388         if (dry_run)
2389                 do_xfers = 0;
2390
2391         set_io_timeout(io_timeout);
2392
2393         if (INFO_GTE(NAME, 1) && !stdout_format) {
2394                 stdout_format = "%n%L";
2395                 log_before_transfer = !am_server;
2396         }
2397         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
2398                 stdout_format_has_o_or_i = 1;
2399
2400         if (logfile_name && !am_daemon) {
2401                 if (!logfile_format) {
2402                         logfile_format = "%i %n%L";
2403                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
2404                 } else {
2405                         if (log_format_has(logfile_format, 'i'))
2406                                 logfile_format_has_i = 1;
2407                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
2408                                 logfile_format_has_o_or_i = 1;
2409                 }
2410                 log_init(0);
2411         } else if (!am_daemon)
2412                 logfile_format = NULL;
2413
2414         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
2415                 bwlimit = daemon_bwlimit;
2416         if (bwlimit) {
2417                 bwlimit_writemax = (size_t)bwlimit * 128;
2418                 if (bwlimit_writemax < 512)
2419                         bwlimit_writemax = 512;
2420         }
2421
2422         if (append_mode) {
2423                 if (whole_file > 0) {
2424                         snprintf(err_buf, sizeof err_buf,
2425                                  "--append cannot be used with --whole-file\n");
2426                         return 0;
2427                 }
2428                 if (refused_inplace) {
2429                         create_refuse_error(refused_inplace);
2430                         return 0;
2431                 }
2432                 inplace = 1;
2433         }
2434
2435         if (write_devices) {
2436                 if (refused_inplace) {
2437                         create_refuse_error(refused_inplace);
2438                         return 0;
2439                 }
2440                 inplace = 1;
2441         }
2442
2443         if (delay_updates && !partial_dir)
2444                 partial_dir = tmp_partialdir;
2445
2446         if (inplace) {
2447 #ifdef HAVE_FTRUNCATE
2448                 if (partial_dir) {
2449                         snprintf(err_buf, sizeof err_buf,
2450                                  "--%s cannot be used with --%s\n",
2451                                  append_mode ? "append" : "inplace",
2452                                  delay_updates ? "delay-updates" : "partial-dir");
2453                         return 0;
2454                 }
2455                 /* --inplace implies --partial for refusal purposes, but we
2456                  * clear the keep_partial flag for internal logic purposes. */
2457                 if (refused_partial) {
2458                         create_refuse_error(refused_partial);
2459                         return 0;
2460                 }
2461                 keep_partial = 0;
2462 #else
2463                 snprintf(err_buf, sizeof err_buf,
2464                          "--%s is not supported on this %s\n",
2465                          append_mode ? "append" : "inplace",
2466                          am_server ? "server" : "client");
2467                 return 0;
2468 #endif
2469         } else {
2470                 if (keep_partial && !partial_dir && !am_server) {
2471                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2472                                 partial_dir = strdup(arg);
2473                 }
2474                 if (partial_dir) {
2475                         if (*partial_dir)
2476                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2477                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2478                                 partial_dir = NULL;
2479                         if (!partial_dir && refused_partial) {
2480                                 create_refuse_error(refused_partial);
2481                                 return 0;
2482                         }
2483                         keep_partial = 1;
2484                 }
2485         }
2486
2487         if (files_from) {
2488                 char *h, *p;
2489                 int q;
2490                 if (argc > 2 || (!am_daemon && !am_server && argc == 1)) {
2491                         usage(FERROR);
2492                         exit_cleanup(RERR_SYNTAX);
2493                 }
2494                 if (strcmp(files_from, "-") == 0) {
2495                         filesfrom_fd = 0;
2496                         if (am_server)
2497                                 filesfrom_host = ""; /* reading from socket */
2498                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2499                         if (am_server) {
2500                                 snprintf(err_buf, sizeof err_buf,
2501                                         "The --files-from sent to the server cannot specify a host.\n");
2502                                 return 0;
2503                         }
2504                         files_from = p;
2505                         filesfrom_host = h;
2506                         if (strcmp(files_from, "-") == 0) {
2507                                 snprintf(err_buf, sizeof err_buf,
2508                                         "Invalid --files-from remote filename\n");
2509                                 return 0;
2510                         }
2511                 } else {
2512                         if (sanitize_paths)
2513                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2514                         if (daemon_filter_list.head) {
2515                                 char *dir;
2516                                 if (!*files_from)
2517                                         goto options_rejected;
2518                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2519                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2520                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2521                                         goto options_rejected;
2522                         }
2523                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2524                         if (filesfrom_fd < 0) {
2525                                 snprintf(err_buf, sizeof err_buf,
2526                                         "failed to open files-from file %s: %s\n",
2527                                         files_from, strerror(errno));
2528                                 return 0;
2529                         }
2530                 }
2531         }
2532
2533         am_starting_up = 0;
2534
2535         return 1;
2536
2537   options_rejected:
2538         snprintf(err_buf, sizeof err_buf,
2539                 "Your options have been rejected by the server.\n");
2540         return 0;
2541 }
2542
2543
2544 /**
2545  * Construct a filtered list of options to pass through from the
2546  * client to the server.
2547  *
2548  * This involves setting options that will tell the server how to
2549  * behave, and also filtering out options that are processed only
2550  * locally.
2551  **/
2552 void server_options(char **args, int *argc_p)
2553 {
2554         static char argstr[64];
2555         int ac = *argc_p;
2556         uchar where;
2557         char *arg;
2558         int i, x;
2559
2560         /* This should always remain first on the server's command-line. */
2561         args[ac++] = "--server";
2562
2563         if (daemon_over_rsh > 0) {
2564                 args[ac++] = "--daemon";
2565                 *argc_p = ac;
2566                 /* if we're passing --daemon, we're done */
2567                 return;
2568         }
2569
2570         if (!am_sender)
2571                 args[ac++] = "--sender";
2572
2573         x = 1;
2574         argstr[0] = '-';
2575
2576         if (protect_args)
2577                 argstr[x++] = 's';
2578
2579         for (i = 0; i < verbose; i++)
2580                 argstr[x++] = 'v';
2581
2582         if (quiet && msgs2stderr)
2583                 argstr[x++] = 'q';
2584         if (make_backups)
2585                 argstr[x++] = 'b';
2586         if (update_only)
2587                 argstr[x++] = 'u';
2588         if (!do_xfers) /* Note: NOT "dry_run"! */
2589                 argstr[x++] = 'n';
2590         if (preserve_links)
2591                 argstr[x++] = 'l';
2592         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2593          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2594                 argstr[x++] = 'd';
2595         if (am_sender) {
2596                 if (keep_dirlinks)
2597                         argstr[x++] = 'K';
2598                 if (prune_empty_dirs)
2599                         argstr[x++] = 'm';
2600                 if (omit_dir_times)
2601                         argstr[x++] = 'O';
2602                 if (omit_link_times)
2603                         argstr[x++] = 'J';
2604                 if (fuzzy_basis) {
2605                         argstr[x++] = 'y';
2606                         if (fuzzy_basis > 1)
2607                                 argstr[x++] = 'y';
2608                 }
2609         } else {
2610                 if (copy_links)
2611                         argstr[x++] = 'L';
2612                 if (copy_dirlinks)
2613                         argstr[x++] = 'k';
2614         }
2615
2616         if (whole_file > 0)
2617                 argstr[x++] = 'W';
2618         /* We don't need to send --no-whole-file, because it's the
2619          * default for remote transfers, and in any case old versions
2620          * of rsync will not understand it. */
2621
2622         if (preserve_hard_links) {
2623                 argstr[x++] = 'H';
2624                 if (preserve_hard_links > 1)
2625                         argstr[x++] = 'H';
2626         }
2627         if (preserve_uid)
2628                 argstr[x++] = 'o';
2629         if (preserve_gid)
2630                 argstr[x++] = 'g';
2631         if (preserve_devices) /* ignore preserve_specials here */
2632                 argstr[x++] = 'D';
2633         if (preserve_times)
2634                 argstr[x++] = 't';
2635         if (preserve_atimes) {
2636                 argstr[x++] = 'U';
2637                 if (preserve_atimes > 1)
2638                         argstr[x++] = 'U';
2639         }
2640         if (preserve_perms)
2641                 argstr[x++] = 'p';
2642         else if (preserve_executability && am_sender)
2643                 argstr[x++] = 'E';
2644 #ifdef SUPPORT_ACLS
2645         if (preserve_acls)
2646                 argstr[x++] = 'A';
2647 #endif
2648 #ifdef SUPPORT_XATTRS
2649         if (preserve_xattrs) {
2650                 argstr[x++] = 'X';
2651                 if (preserve_xattrs > 1)
2652                         argstr[x++] = 'X';
2653         }
2654 #endif
2655         if (recurse)
2656                 argstr[x++] = 'r';
2657         if (always_checksum)
2658                 argstr[x++] = 'c';
2659         if (cvs_exclude)
2660                 argstr[x++] = 'C';
2661         if (ignore_times)
2662                 argstr[x++] = 'I';
2663         if (relative_paths)
2664                 argstr[x++] = 'R';
2665         if (one_file_system) {
2666                 argstr[x++] = 'x';
2667                 if (one_file_system > 1)
2668                         argstr[x++] = 'x';
2669         }
2670         if (sparse_files)
2671                 argstr[x++] = 'S';
2672         if (do_compression == CPRES_ZLIB)
2673                 argstr[x++] = 'z';
2674
2675         set_allow_inc_recurse();
2676
2677         /* We don't really know the actual protocol_version at this point,
2678          * but checking the pre-negotiated value allows the user to use a
2679          * --protocol=29 override to avoid the use of this -eFLAGS opt. */
2680         if (protocol_version >= 30) {
2681                 /* Use "eFlags" alias so that cull_options doesn't think that these are no-arg option letters. */
2682 #define eFlags argstr
2683                 /* We make use of the -e option to let the server know about
2684                  * any pre-release protocol version && some behavior flags. */
2685                 eFlags[x++] = 'e';
2686 #if SUBPROTOCOL_VERSION != 0
2687                 if (protocol_version == PROTOCOL_VERSION) {
2688                         x += snprintf(argstr+x, sizeof argstr - x,
2689                                       "%d.%d",
2690                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2691                 } else
2692 #endif
2693                         eFlags[x++] = '.';
2694                 if (allow_inc_recurse)
2695                         eFlags[x++] = 'i';
2696 #ifdef CAN_SET_SYMLINK_TIMES
2697                 eFlags[x++] = 'L'; /* symlink time-setting support */
2698 #endif
2699 #ifdef ICONV_OPTION
2700                 eFlags[x++] = 's'; /* symlink iconv translation support */
2701 #endif
2702                 eFlags[x++] = 'f'; /* flist I/O-error safety support */
2703                 eFlags[x++] = 'x'; /* xattr hardlink optimization not desired */
2704                 eFlags[x++] = 'C'; /* support checksum seed order fix */
2705                 eFlags[x++] = 'I'; /* support inplace_partial behavior */
2706                 eFlags[x++] = 'v'; /* use varint for flist & compat flags; negotiate checksum */
2707                 /* NOTE: Avoid using 'V' -- it was the high bit of a write_byte() that became write_varint(). */
2708 #undef eFlags
2709         }
2710
2711         if (x >= (int)sizeof argstr) { /* Not possible... */
2712                 rprintf(FERROR, "argstr overflow in server_options().\n");
2713                 exit_cleanup(RERR_MALLOC);
2714         }
2715
2716         argstr[x] = '\0';
2717
2718         if (x > 1)
2719                 args[ac++] = argstr;
2720
2721 #ifdef ICONV_OPTION
2722         if (iconv_opt) {
2723                 char *set = strchr(iconv_opt, ',');
2724                 if (set)
2725                         set++;
2726                 else
2727                         set = iconv_opt;
2728                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2729                         goto oom;
2730                 args[ac++] = arg;
2731         }
2732 #endif
2733
2734         if (protect_args && !local_server) /* unprotected args stop here */
2735                 args[ac++] = NULL;
2736
2737         if (list_only > 1)
2738                 args[ac++] = "--list-only";
2739
2740         /* This makes sure that the remote rsync can handle deleting with -d
2741          * sans -r because the --no-r option was added at the same time. */
2742         if (xfer_dirs && !recurse && delete_mode && am_sender)
2743                 args[ac++] = "--no-r";
2744
2745         if (do_compression && do_compression_level != CLVL_NOT_SPECIFIED) {
2746                 if (asprintf(&arg, "--compress-level=%d", do_compression_level) < 0)
2747                         goto oom;
2748                 args[ac++] = arg;
2749         }
2750
2751         if (preserve_devices) {
2752                 /* Note: sending "--devices" would not be backward-compatible. */
2753                 if (!preserve_specials)
2754                         args[ac++] = "--no-specials"; /* -D is already set. */
2755         } else if (preserve_specials)
2756                 args[ac++] = "--specials";
2757
2758         /* The server side doesn't use our log-format, but in certain
2759          * circumstances they need to know a little about the option. */
2760         if (stdout_format && am_sender) {
2761                 /* Use --log-format, not --out-format, for compatibility. */
2762                 if (stdout_format_has_i > 1)
2763                         args[ac++] = "--log-format=%i%I";
2764                 else if (stdout_format_has_i)
2765                         args[ac++] = "--log-format=%i";
2766                 else if (stdout_format_has_o_or_i)
2767                         args[ac++] = "--log-format=%o";
2768                 else if (!verbose)
2769                         args[ac++] = "--log-format=X";
2770         }
2771
2772         if (block_size) {
2773                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2774                         goto oom;
2775                 args[ac++] = arg;
2776         }
2777
2778         if (io_timeout) {
2779                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2780                         goto oom;
2781                 args[ac++] = arg;
2782         }
2783
2784         if (bwlimit) {
2785                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2786                         goto oom;
2787                 args[ac++] = arg;
2788         }
2789
2790         if (backup_dir) {
2791                 args[ac++] = "--backup-dir";
2792                 args[ac++] = backup_dir;
2793         }
2794
2795         /* Only send --suffix if it specifies a non-default value. */
2796         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2797                 /* We use the following syntax to avoid weirdness with '~'. */
2798                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2799                         goto oom;
2800                 args[ac++] = arg;
2801         }
2802
2803         if (checksum_choice) {
2804                 if (asprintf(&arg, "--checksum-choice=%s", checksum_choice) < 0)
2805                         goto oom;
2806                 args[ac++] = arg;
2807         }
2808
2809         if (do_compression == CPRES_ZLIBX)
2810                 args[ac++] = "--new-compress";
2811         else if (compress_choice && do_compression == CPRES_ZLIB)
2812                 args[ac++] = "--old-compress";
2813         else if (compress_choice) {
2814                 if (asprintf(&arg, "--compress-choice=%s", compress_choice) < 0)
2815                         goto oom;
2816                 args[ac++] = arg;
2817         }
2818
2819         if (am_sender) {
2820                 if (max_delete > 0) {
2821                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2822                                 goto oom;
2823                         args[ac++] = arg;
2824                 } else if (max_delete == 0)
2825                         args[ac++] = "--max-delete=-1";
2826                 if (min_size >= 0) {
2827                         args[ac++] = "--min-size";
2828                         args[ac++] = min_size_arg;
2829                 }
2830                 if (max_size >= 0) {
2831                         args[ac++] = "--max-size";
2832                         args[ac++] = max_size_arg;
2833                 }
2834                 if (delete_before)
2835                         args[ac++] = "--delete-before";
2836                 else if (delete_during == 2)
2837                         args[ac++] = "--delete-delay";
2838                 else if (delete_during)
2839                         args[ac++] = "--delete-during";
2840                 else if (delete_after)
2841                         args[ac++] = "--delete-after";
2842                 else if (delete_mode && !delete_excluded)
2843                         args[ac++] = "--delete";
2844                 if (delete_excluded)
2845                         args[ac++] = "--delete-excluded";
2846                 if (force_delete)
2847                         args[ac++] = "--force";
2848                 if (write_batch < 0)
2849                         args[ac++] = "--only-write-batch=X";
2850                 if (am_root > 1)
2851                         args[ac++] = "--super";
2852                 if (size_only)
2853                         args[ac++] = "--size-only";
2854                 if (do_stats)
2855                         args[ac++] = "--stats";
2856         } else {
2857                 if (skip_compress) {
2858                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2859                                 goto oom;
2860                         args[ac++] = arg;
2861                 }
2862         }
2863
2864         /* --delete-missing-args needs the cooperation of both sides, but
2865          * the sender can handle --ignore-missing-args by itself. */
2866         if (missing_args == 2)
2867                 args[ac++] = "--delete-missing-args";
2868         else if (missing_args == 1 && !am_sender)
2869                 args[ac++] = "--ignore-missing-args";
2870
2871         if (modify_window_set && am_sender) {
2872                 char *fmt = modify_window < 0 ? "-@%d" : "--modify-window=%d";
2873                 if (asprintf(&arg, fmt, modify_window) < 0)
2874                         goto oom;
2875                 args[ac++] = arg;
2876         }
2877
2878         if (checksum_seed) {
2879                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2880                         goto oom;
2881                 args[ac++] = arg;
2882         }
2883
2884         if (partial_dir && am_sender) {
2885                 if (partial_dir != tmp_partialdir) {
2886                         args[ac++] = "--partial-dir";
2887                         args[ac++] = partial_dir;
2888                 }
2889                 if (delay_updates)
2890                         args[ac++] = "--delay-updates";
2891         } else if (keep_partial && am_sender)
2892                 args[ac++] = "--partial";
2893
2894         if (ignore_errors)
2895                 args[ac++] = "--ignore-errors";
2896
2897         if (copy_unsafe_links)
2898                 args[ac++] = "--copy-unsafe-links";
2899
2900         if (safe_symlinks)
2901                 args[ac++] = "--safe-links";
2902
2903         if (numeric_ids)
2904                 args[ac++] = "--numeric-ids";
2905
2906         if (use_qsort)
2907                 args[ac++] = "--use-qsort";
2908
2909         if (am_sender) {
2910                 if (usermap) {
2911                         if (asprintf(&arg, "--usermap=%s", usermap) < 0)
2912                                 goto oom;
2913                         args[ac++] = arg;
2914                 }
2915
2916                 if (groupmap) {
2917                         if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
2918                                 goto oom;
2919                         args[ac++] = arg;
2920                 }
2921
2922                 if (ignore_existing)
2923                         args[ac++] = "--ignore-existing";
2924
2925                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2926                 if (ignore_non_existing)
2927                         args[ac++] = "--existing";
2928
2929                 if (tmpdir) {
2930                         args[ac++] = "--temp-dir";
2931                         args[ac++] = tmpdir;
2932                 }
2933
2934                 if (basis_dir[0]) {
2935                         /* the server only needs this option if it is not the sender,
2936                          *   and it may be an older version that doesn't know this
2937                          *   option, so don't send it if client is the sender.
2938                          */
2939                         for (i = 0; i < basis_dir_cnt; i++) {
2940                                 args[ac++] = dest_option;
2941                                 args[ac++] = basis_dir[i];
2942                         }
2943                 }
2944         }
2945
2946         /* What flags do we need to send to the other side? */
2947         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2948         arg = make_output_option(info_words, info_levels, where);
2949         if (arg)
2950                 args[ac++] = arg;
2951
2952         if (append_mode) {
2953                 if (append_mode > 1)
2954                         args[ac++] = "--append";
2955                 args[ac++] = "--append";
2956         } else if (inplace)
2957                 args[ac++] = "--inplace";
2958
2959         if (files_from && (!am_sender || filesfrom_host)) {
2960                 if (filesfrom_host) {
2961                         args[ac++] = "--files-from";
2962                         args[ac++] = files_from;
2963                         if (eol_nulls)
2964                                 args[ac++] = "--from0";
2965                 } else {
2966                         args[ac++] = "--files-from=-";
2967                         args[ac++] = "--from0";
2968                 }
2969                 if (!relative_paths)
2970                         args[ac++] = "--no-relative";
2971         }
2972         /* It's OK that this checks the upper-bound of the protocol_version. */
2973         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2974                 args[ac++] = "--no-implied-dirs";
2975
2976         if (write_devices && am_sender)
2977                 args[ac++] = "--write-devices";
2978
2979         if (remove_source_files == 1)
2980                 args[ac++] = "--remove-source-files";
2981         else if (remove_source_files)
2982                 args[ac++] = "--remove-sent-files";
2983
2984         if (preallocate_files && am_sender)
2985                 args[ac++] = "--preallocate";
2986
2987         if (open_noatime && preserve_atimes <= 1)
2988                 args[ac++] = "--open-noatime";
2989
2990         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2991                 rprintf(FERROR, "argc overflow in server_options().\n");
2992                 exit_cleanup(RERR_MALLOC);
2993         }
2994
2995         if (remote_option_cnt) {
2996                 int j;
2997                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2998                         rprintf(FERROR, "too many remote options specified.\n");
2999                         exit_cleanup(RERR_SYNTAX);
3000                 }
3001                 for (j = 1; j <= remote_option_cnt; j++)
3002                         args[ac++] = (char*)remote_options[j];
3003         }
3004
3005         *argc_p = ac;
3006         return;
3007
3008     oom:
3009         out_of_memory("server_options");
3010 }
3011
3012 /* If str points to a valid hostspec, return allocated memory containing the
3013  * [USER@]HOST part of the string, and set the path_start_ptr to the part of
3014  * the string after the host part.  Otherwise, return NULL.  If port_ptr is
3015  * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
3016  * *port_ptr if a port number is found.  Note that IPv6 IPs will have their
3017  * (required for parsing) [ and ] chars elided from the returned string. */
3018 static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
3019 {
3020         char *s, *host_start = str;
3021         int hostlen = 0, userlen = 0;
3022         char *ret;
3023
3024         for (s = str; ; s++) {
3025                 if (!*s) {
3026                         /* It is only OK if we run out of string with rsync:// */
3027                         if (!port_ptr)
3028                                 return NULL;
3029                         if (!hostlen)
3030                                 hostlen = s - host_start;
3031                         break;
3032                 }
3033                 if (*s == ':' || *s == '/') {
3034                         if (!hostlen)
3035                                 hostlen = s - host_start;
3036                         if (*s++ == '/') {
3037                                 if (!port_ptr)
3038                                         return NULL;
3039                         } else if (port_ptr) {
3040                                 *port_ptr = atoi(s);
3041                                 while (isDigit(s)) s++;
3042                                 if (*s && *s++ != '/')
3043                                         return NULL;
3044                         }
3045                         break;
3046                 }
3047                 if (*s == '@') {
3048                         userlen = s - str + 1;
3049                         host_start = s + 1;
3050                 } else if (*s == '[') {
3051                         if (s != host_start++)
3052                                 return NULL;
3053                         while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
3054                         hostlen = s - host_start;
3055                         if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
3056                                 return NULL;
3057                 }
3058         }
3059
3060         *path_start_ptr = s;
3061         ret = new_array(char, userlen + hostlen + 1);
3062         if (userlen)
3063                 strlcpy(ret, str, userlen + 1);
3064         strlcpy(ret + userlen, host_start, hostlen + 1);
3065         return ret;
3066 }
3067
3068 /* Look for a HOST specification of the form "HOST:PATH", "HOST::PATH", or
3069  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
3070  * memory with the HOST.  If a daemon-accessing spec was specified, the value
3071  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
3072  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
3073  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
3074  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
3075 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
3076 {
3077         char *path;
3078
3079         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
3080                 *host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
3081                 if (*host_ptr) {
3082                         if (!*port_ptr)
3083                                 *port_ptr = -1; /* -1 indicates they want the default */
3084                         return path;
3085                 }
3086         }
3087
3088         *host_ptr = parse_hostspec(s, &path, NULL);
3089         if (!*host_ptr)
3090                 return NULL;
3091
3092         if (*path == ':') {
3093                 if (port_ptr && !*port_ptr)
3094                         *port_ptr = -1;
3095                 return path + 1;
3096         }
3097         if (port_ptr)
3098                 *port_ptr = 0;
3099
3100         return path;
3101 }