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) 2002-2011 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 <popt.h>
  25 #include <zlib.h>
  26
  27 extern int module_id;
  28 extern int local_server;
  29 extern int sanitize_paths;
  30 extern int daemon_over_rsh;
  31 extern unsigned int module_dirlen;
  32 extern filter_rule_list filter_list;
  33 extern filter_rule_list daemon_filter_list;
  34
  35 int make_backups = 0;
  36
  37 /**
  38  * If 1, send the whole file as literal data rather than trying to
  39  * create an incremental diff.
  40  *
  41  * If -1, then look at whether we're local or remote and go by that.
  42  *
  43  * @sa disable_deltas_p()
  44  **/
  45 int whole_file = -1;
  46
  47 int append_mode = 0;
  48 int keep_dirlinks = 0;
  49 int copy_dirlinks = 0;
  50 int copy_links = 0;
  51 int preserve_links = 0;
  52 int preserve_hard_links = 0;
  53 int preserve_acls = 0;
  54 int preserve_xattrs = 0;
  55 int preserve_perms = 0;
  56 int preserve_executability = 0;
  57 int preserve_devices = 0;
  58 int preserve_specials = 0;
  59 int preserve_uid = 0;
  60 int preserve_gid = 0;
  61 int preserve_times = 0;
  62 int update_only = 0;
  63 int cvs_exclude = 0;
  64 int dry_run = 0;
  65 int do_xfers = 1;
  66 int ignore_times = 0;
  67 int delete_mode = 0;
  68 int delete_during = 0;
  69 int delete_before = 0;
  70 int delete_after = 0;
  71 int delete_excluded = 0;
  72 int remove_source_files = 0;
  73 int one_file_system = 0;
  74 int protocol_version = PROTOCOL_VERSION;
  75 int sparse_files = 0;
  76 int preallocate_files = 0;
  77 int do_compression = 0;
  78 int def_compress_level = Z_DEFAULT_COMPRESSION;
  79 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  80 int am_server = 0;
  81 int am_sender = 0;
  82 int am_starting_up = 1;
  83 int relative_paths = -1;
  84 int implied_dirs = 1;
  85 int missing_args = 0; /* 0 = FERROR_XFER, 1 = ignore, 2 = delete */
  86 int numeric_ids = 0;
  87 int msgs2stderr = 0;
  88 int allow_8bit_chars = 0;
  89 int force_delete = 0;
  90 int io_timeout = 0;
  91 int prune_empty_dirs = 0;
  92 int use_qsort = 0;
  93 char *files_from = NULL;
  94 int filesfrom_fd = -1;
  95 char *filesfrom_host = NULL;
  96 int eol_nulls = 0;
  97 int protect_args = -1;
  98 int human_readable = 1;
  99 int recurse = 0;
 100 int allow_inc_recurse = 1;
 101 int xfer_dirs = -1;
 102 int am_daemon = 0;
 103 int connect_timeout = 0;
 104 int keep_partial = 0;
 105 int safe_symlinks = 0;
 106 int copy_unsafe_links = 0;
 107 int munge_symlinks = 0;
 108 int size_only = 0;
 109 int daemon_bwlimit = 0;
 110 int bwlimit = 0;
 111 int fuzzy_basis = 0;
 112 size_t bwlimit_writemax = 0;
 113 int ignore_existing = 0;
 114 int ignore_non_existing = 0;
 115 int need_messages_from_generator = 0;
 116 int max_delete = INT_MIN;
 117 OFF_T max_size = 0;
 118 OFF_T min_size = 0;
 119 int ignore_errors = 0;
 120 int modify_window = 0;
 121 int blocking_io = -1;
 122 int checksum_seed = 0;
 123 int inplace = 0;
 124 int delay_updates = 0;
 125 long block_size = 0; /* "long" because popt can't set an int32. */
 126 char number_separator;
 127 char *skip_compress = NULL;
 128 item_list dparam_list = EMPTY_ITEM_LIST;
 129
 130 /** Network address family. **/
 131 int default_af_hint
 132 #ifdef INET6
 133         = 0;            /* Any protocol */
 134 #else
 135         = AF_INET;      /* Must use IPv4 */
 136 # ifdef AF_INET6
 137 #  undef AF_INET6
 138 # endif
 139 # define AF_INET6 AF_INET /* make -6 option a no-op */
 140 #endif
 141
 142 /** Do not go into the background when run as --daemon.  Good
 143  * for debugging and required for running as a service on W32,
 144  * or under Unix process-monitors. **/
 145 int no_detach
 146 #if defined _WIN32 || defined __WIN32__
 147         = 1;
 148 #else
 149         = 0;
 150 #endif
 151
 152 int write_batch = 0;
 153 int read_batch = 0;
 154 int backup_dir_len = 0;
 155 int backup_suffix_len;
 156 unsigned int backup_dir_remainder;
 157
 158 char *backup_suffix = NULL;
 159 char *tmpdir = NULL;
 160 char *partial_dir = NULL;
 161 char *basis_dir[MAX_BASIS_DIRS+1];
 162 char *config_file = NULL;
 163 char *shell_cmd = NULL;
 164 char *logfile_name = NULL;
 165 char *logfile_format = NULL;
 166 char *stdout_format = NULL;
 167 char *password_file = NULL;
 168 char *rsync_path = RSYNC_PATH;
 169 char *backup_dir = NULL;
 170 char backup_dir_buf[MAXPATHLEN];
 171 char *sockopts = NULL;
 172 char *usermap = NULL;
 173 char *groupmap = NULL;
 174 int rsync_port = 0;
 175 int compare_dest = 0;
 176 int copy_dest = 0;
 177 int link_dest = 0;
 178 int basis_dir_cnt = 0;
 179 char *dest_option = NULL;
 180
 181 static int remote_option_alloc = 0;
 182 int remote_option_cnt = 0;
 183 const char **remote_options = NULL;
 184
 185 int quiet = 0;
 186 int output_motd = 1;
 187 int log_before_transfer = 0;
 188 int stdout_format_has_i = 0;
 189 int stdout_format_has_o_or_i = 0;
 190 int logfile_format_has_i = 0;
 191 int logfile_format_has_o_or_i = 0;
 192 int always_checksum = 0;
 193 int list_only = 0;
 194
 195 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 196 char *batch_name = NULL;
 197
 198 int need_unsorted_flist = 0;
 199 #ifdef ICONV_OPTION
 200 char *iconv_opt = ICONV_OPTION;
 201 #endif
 202
 203 struct chmod_mode_struct *chmod_modes = NULL;
 204
 205 static const char *debug_verbosity[] = {
 206         /*0*/ NULL,
 207         /*1*/ NULL,
 208         /*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
 209         /*3*/ "ACL,BACKUP,CONNECT2,DELTASUM2,DEL2,EXIT,FILTER2,FLIST2,FUZZY,GENR,OWN,RECV,SEND,TIME",
 210         /*4*/ "CMD2,DELTASUM3,DEL3,EXIT2,FLIST3,ICONV2,OWN2,PROTO,TIME2",
 211         /*5*/ "CHDIR,DELTASUM4,FLIST4,FUZZY2,HASH,HLINK",
 212 };
 213
 214 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 215
 216 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 217         /*0*/ NULL,
 218         /*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
 219         /*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
 220 };
 221
 222 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 223
 224 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 225
 226 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 227 #define HELP_PRIORITY 1         /* The help output uses this level. */
 228 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 229 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 230
 231 #define W_CLI (1<<0)    /* client side */
 232 #define W_SRV (1<<1)    /* server side */
 233 #define W_SND (1<<2)    /* sending side */
 234 #define W_REC (1<<3)    /* receiving side */
 235
 236 struct output_struct {
 237         char *name;     /* The name of the info/debug flag. */
 238         char *help;     /* The description of the info/debug flag. */
 239         uchar namelen;  /* The length of the name string. */
 240         uchar flag;     /* The flag's value, for consistency check. */
 241         uchar where;    /* Bits indicating where the flag is used. */
 242         uchar priority; /* See *_PRIORITY defines. */
 243 };
 244
 245 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 246
 247 static struct output_struct info_words[COUNT_INFO+1] = {
 248         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 249         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 250         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 251         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 252         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
 253         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 254         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 255         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 256         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 257         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 258         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 259         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 260         { NULL, "--info", 0, 0, 0, 0 }
 261 };
 262
 263 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 264
 265 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 266         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 267         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 268         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 269         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 270         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events (levels 1-2)"),
 271         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 272         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 273         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 274         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 275         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-3)"),
 276         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 277         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 278         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 279         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 280         DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
 281         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions (levels 1-3)"),
 282         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
 283         DEBUG_WORD(IO, W_CLI|W_SRV, "Debug I/O routines (levels 1-4)"),
 284         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 285         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 286         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 287         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 288         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 289         { NULL, "--debug", 0, 0, 0, 0 }
 290 };
 291
 292 static int verbose = 0;
 293 static int do_stats = 0;
 294 static int do_progress = 0;
 295 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 296 static int omit_dir_times = 0;
 297 static int omit_link_times = 0;
 298 static int F_option_cnt = 0;
 299 static int modify_window_set;
 300 static int itemize_changes = 0;
 301 static int refused_delete, refused_archive_part, refused_compress;
 302 static int refused_partial, refused_progress, refused_delete_before;
 303 static int refused_delete_during;
 304 static int refused_inplace, refused_no_iconv;
 305 static BOOL usermap_via_chown, groupmap_via_chown;
 306 static char *bwlimit_arg, *max_size_arg, *min_size_arg;
 307 static char tmp_partialdir[] = ".~tmp~";
 308
 309 /** Local address to bind.  As a character string because it's
 310  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 311  * address, or a hostname. **/
 312 char *bind_address;
 313
 314 static void output_item_help(struct output_struct *words);
 315
 316 /* This constructs a string that represents all the options set for either
 317  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 318  * This is used both when conveying the user's options to the server, and
 319  * when the help output wants to tell the user what options are implied. */
 320 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 321 {
 322         char *str = words == info_words ? "--info=" : "--debug=";
 323         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 324         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 325         char *buf;
 326
 327         memset(counts, 0, sizeof counts);
 328
 329         for (j = 0; words[j].name; j++) {
 330                 if (words[j].flag != j) {
 331                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 332                                 words == info_words ? "INFO_" : "DEBUG_",
 333                                 words[j].name, words[j].flag, j);
 334                         exit_cleanup(RERR_UNSUPPORTED);
 335                 }
 336                 if (!(words[j].where & where))
 337                         continue;
 338                 if (words[j].priority == DEFAULT_PRIORITY) {
 339                         /* Implied items don't need to be mentioned. */
 340                         skipped++;
 341                         continue;
 342                 }
 343                 len += len ? 1 : strlen(str);
 344                 len += strlen(words[j].name);
 345                 len += levels[j] == 1 ? 0 : 1;
 346
 347                 if (words[j].priority == HELP_PRIORITY)
 348                         continue; /* no abbreviating for help */
 349
 350                 assert(levels[j] <= MAX_OUT_LEVEL);
 351                 if (++counts[levels[j]] > max) {
 352                         /* Determine which level has the most items. */
 353                         lev = levels[j];
 354                         max = counts[lev];
 355                 }
 356         }
 357
 358         /* Sanity check the COUNT_* define against the length of the table. */
 359         if (j != word_count) {
 360                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 361                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 362                         j, word_count);
 363                 exit_cleanup(RERR_UNSUPPORTED);
 364         }
 365
 366         if (!len)
 367                 return NULL;
 368
 369         len++;
 370         if (!(buf = new_array(char, len)))
 371                 out_of_memory("make_output_option");
 372         pos = 0;
 373
 374         if (skipped || max < 5)
 375                 lev = -1;
 376         else {
 377                 if (lev == 0)
 378                         pos += snprintf(buf, len, "%sNONE", str);
 379                 else if (lev == 1)
 380                         pos += snprintf(buf, len, "%sALL", str);
 381                 else
 382                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 383         }
 384
 385         for (j = 0; words[j].name && pos < len; j++) {
 386                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 387                         continue;
 388                 if (pos)
 389                         buf[pos++] = ',';
 390                 else
 391                         pos += strlcpy(buf+pos, str, len-pos);
 392                 if (pos < len)
 393                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 394                 /* Level 1 is implied by the name alone. */
 395                 if (levels[j] != 1 && pos < len)
 396                         buf[pos++] = '0' + levels[j];
 397         }
 398
 399         buf[pos] = '\0';
 400
 401         return buf;
 402 }
 403
 404 static void parse_output_words(struct output_struct *words, short *levels,
 405                                const char *str, uchar priority)
 406 {
 407         const char *s;
 408         int j, len, lev;
 409
 410         if (!str)
 411                 return;
 412
 413         while (*str) {
 414                 if ((s = strchr(str, ',')) != NULL)
 415                         len = s++ - str;
 416                 else
 417                         len = strlen(str);
 418                 while (len && isDigit(str+len-1))
 419                         len--;
 420                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 421                 if (lev > MAX_OUT_LEVEL)
 422                         lev = MAX_OUT_LEVEL;
 423                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 424                         output_item_help(words);
 425                         exit_cleanup(0);
 426                 }
 427                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 428                         len = lev = 0;
 429                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 430                         len = 0;
 431                 for (j = 0; words[j].name; j++) {
 432                         if (!len
 433                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 434                                 if (priority >= words[j].priority) {
 435                                         words[j].priority = priority;
 436                                         levels[j] = lev;
 437                                 }
 438                                 if (len)
 439                                         break;
 440                         }
 441                 }
 442                 if (len && !words[j].name) {
 443                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 444                                 words[j].help, len, str);
 445                         exit_cleanup(RERR_SYNTAX);
 446                 }
 447                 if (!s)
 448                         break;
 449                 str = s;
 450         }
 451 }
 452
 453 /* Tell the user what all the info or debug flags mean. */
 454 static void output_item_help(struct output_struct *words)
 455 {
 456         short *levels = words == info_words ? info_levels : debug_levels;
 457         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 458         char buf[128], *opt, *fmt = "%-10s %s\n";
 459         int j;
 460
 461         reset_output_levels();
 462
 463         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 464         rprintf(FINFO, "\n");
 465         for (j = 0; words[j].name; j++)
 466                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 467         rprintf(FINFO, "\n");
 468
 469         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 470                  words[j].help, MAX_OUT_LEVEL);
 471         rprintf(FINFO, fmt, "ALL", buf);
 472
 473         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 474                  words[j].help);
 475         rprintf(FINFO, fmt, "NONE", buf);
 476
 477         rprintf(FINFO, fmt, "HELP", "Output this help message");
 478         rprintf(FINFO, "\n");
 479         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 480
 481         for (j = 1; j <= MAX_VERBOSITY; j++) {
 482                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 483                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 484                 if (opt) {
 485                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 486                         free(opt);
 487                 }
 488                 reset_output_levels();
 489         }
 490 }
 491
 492 /* The --verbose option now sets info+debug flags. */
 493 static void set_output_verbosity(int level, uchar priority)
 494 {
 495         int j;
 496
 497         if (level > MAX_VERBOSITY)
 498                 level = MAX_VERBOSITY;
 499
 500         for (j = 1; j <= level; j++) {
 501                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 502                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 503         }
 504 }
 505
 506 /* Limit the info+debug flag levels given a verbose-option level limit. */
 507 void limit_output_verbosity(int level)
 508 {
 509         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 510         int j;
 511
 512         if (level > MAX_VERBOSITY)
 513                 return;
 514
 515         memset(info_limits, 0, sizeof info_limits);
 516         memset(debug_limits, 0, sizeof debug_limits);
 517
 518         /* Compute the level limits in the above arrays. */
 519         for (j = 1; j <= level; j++) {
 520                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 521                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 522         }
 523
 524         for (j = 0; j < COUNT_INFO; j++) {
 525                 if (info_levels[j] > info_limits[j])
 526                         info_levels[j] = info_limits[j];
 527         }
 528
 529         for (j = 0; j < COUNT_DEBUG; j++) {
 530                 if (debug_levels[j] > debug_limits[j])
 531                         debug_levels[j] = debug_limits[j];
 532         }
 533 }
 534
 535 void reset_output_levels(void)
 536 {
 537         int j;
 538
 539         memset(info_levels, 0, sizeof info_levels);
 540         memset(debug_levels, 0, sizeof debug_levels);
 541
 542         for (j = 0; j < COUNT_INFO; j++)
 543                 info_words[j].priority = DEFAULT_PRIORITY;
 544
 545         for (j = 0; j < COUNT_DEBUG; j++)
 546                 debug_words[j].priority = DEFAULT_PRIORITY;
 547 }
 548
 549 void negate_output_levels(void)
 550 {
 551         int j;
 552
 553         for (j = 0; j < COUNT_INFO; j++)
 554                 info_levels[j] *= -1;
 555
 556         for (j = 0; j < COUNT_DEBUG; j++)
 557                 debug_levels[j] *= -1;
 558 }
 559
 560 static void print_rsync_version(enum logcode f)
 561 {
 562         char *subprotocol = "";
 563         char const *got_socketpair = "no ";
 564         char const *have_inplace = "no ";
 565         char const *hardlinks = "no ";
 566         char const *prealloc = "no ";
 567         char const *symtimes = "no ";
 568         char const *acls = "no ";
 569         char const *xattrs = "no ";
 570         char const *links = "no ";
 571         char const *iconv = "no ";
 572         char const *ipv6 = "no ";
 573         STRUCT_STAT *dumstat;
 574
 575 #if SUBPROTOCOL_VERSION != 0
 576         if (asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION) < 0)
 577                 out_of_memory("print_rsync_version");
 578 #endif
 579 #ifdef HAVE_SOCKETPAIR
 580         got_socketpair = "";
 581 #endif
 582 #ifdef HAVE_FTRUNCATE
 583         have_inplace = "";
 584 #endif
 585 #ifdef SUPPORT_HARD_LINKS
 586         hardlinks = "";
 587 #endif
 588 #ifdef SUPPORT_PREALLOCATION
 589         prealloc = "";
 590 #endif
 591 #ifdef SUPPORT_ACLS
 592         acls = "";
 593 #endif
 594 #ifdef SUPPORT_XATTRS
 595         xattrs = "";
 596 #endif
 597 #ifdef SUPPORT_LINKS
 598         links = "";
 599 #endif
 600 #ifdef INET6
 601         ipv6 = "";
 602 #endif
 603 #ifdef ICONV_OPTION
 604         iconv = "";
 605 #endif
 606 #ifdef CAN_SET_SYMLINK_TIMES
 607         symtimes = "";
 608 #endif
 609
 610         rprintf(f, "%s  version %s  protocol version %d%s\n",
 611                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 612         rprintf(f, "Copyright (C) 1996-2011 by Andrew Tridgell, Wayne Davison, and others.\n");
 613         rprintf(f, "Web site: http://rsync.samba.org/\n");
 614         rprintf(f, "Capabilities:\n");
 615         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 616                 (int)(sizeof (OFF_T) * 8),
 617                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 618                 (int)(sizeof (time_t) * 8),
 619                 (int)(sizeof (int64) * 8));
 620         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 621                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 622         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes, %sprealloc\n",
 623                 have_inplace, acls, xattrs, iconv, symtimes, prealloc);
 624
 625 #ifdef MAINTAINER_MODE
 626         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 627 #endif
 628
 629 #if SIZEOF_INT64 < 8
 630         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 631 #endif
 632         if (sizeof (int64) != SIZEOF_INT64) {
 633                 rprintf(f,
 634                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 635                         (int) SIZEOF_INT64, (int) sizeof (int64));
 636         }
 637
 638         rprintf(f,"\n");
 639         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 640         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 641         rprintf(f,"General Public Licence for details.\n");
 642 }
 643
 644
 645 void usage(enum logcode F)
 646 {
 647   print_rsync_version(F);
 648
 649   rprintf(F,"\n");
 650   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 651   rprintf(F,"via a fast differencing algorithm.\n");
 652
 653   rprintf(F,"\n");
 654   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 655   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 656   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 657   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 658   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 659   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 660   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 661   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 662   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 663   rprintf(F,"\n");
 664   rprintf(F,"Options\n");
 665   rprintf(F," -v, --verbose               increase verbosity\n");
 666   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 667   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 668   rprintf(F,"     --msgs2stderr           special output handling for debugging\n");
 669   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 670   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 671   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 672   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 673   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 674   rprintf(F," -r, --recursive             recurse into directories\n");
 675   rprintf(F," -R, --relative              use relative path names\n");
 676   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 677   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 678   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 679   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 680   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 681   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 682   rprintf(F,"     --append                append data onto shorter files\n");
 683   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 684   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 685   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 686   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 687   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 688   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 689   rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
 690   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 691   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 692   rprintf(F," -H, --hard-links            preserve hard links\n");
 693   rprintf(F," -p, --perms                 preserve permissions\n");
 694   rprintf(F," -E, --executability         preserve the file's executability\n");
 695   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 696 #ifdef SUPPORT_ACLS
 697   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 698 #endif
 699 #ifdef SUPPORT_XATTRS
 700   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 701 #endif
 702   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 703   rprintf(F," -g, --group                 preserve group\n");
 704   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 705   rprintf(F,"     --specials              preserve special files\n");
 706   rprintf(F," -D                          same as --devices --specials\n");
 707   rprintf(F," -t, --times                 preserve modification times\n");
 708   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 709   rprintf(F," -J, --omit-link-times       omit symlinks from --times\n");
 710   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 711 #ifdef SUPPORT_XATTRS
 712   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 713 #endif
 714   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 715 #ifdef SUPPORT_PREALLOCATION
 716   rprintf(F,"     --preallocate           allocate dest files before writing them\n");
 717 #else
 718   rprintf(F,"     --preallocate           pre-allocate dest files on remote receiver\n");
 719 #endif
 720   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 721   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 722   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 723   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 724   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 725   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 726   rprintf(F,"     --existing              skip creating new files on receiver\n");
 727   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 728   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 729   rprintf(F,"     --del                   an alias for --delete-during\n");
 730   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 731   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 732   rprintf(F,"     --delete-during         receiver deletes during the transfer\n");
 733   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 734   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 735   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 736   rprintf(F,"     --ignore-missing-args   ignore missing source args without error\n");
 737   rprintf(F,"     --delete-missing-args   delete missing source args from destination\n");
 738   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 739   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 740   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 741   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 742   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 743   rprintf(F,"     --partial               keep partially transferred files\n");
 744   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 745   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 746   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 747   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 748   rprintf(F,"     --usermap=STRING        custom username mapping\n");
 749   rprintf(F,"     --groupmap=STRING       custom groupname mapping\n");
 750   rprintf(F,"     --chown=USER:GROUP      simple username/groupname mapping\n");
 751   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 752   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 753   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 754   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 755   rprintf(F,"     --size-only             skip files that match in size\n");
 756   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 757   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 758   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 759   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 760   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 761   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 762   rprintf(F," -z, --compress              compress file data during the transfer\n");
 763   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 764   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 765   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 766   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 767   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 768   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 769   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 770   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 771   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 772   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 773   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 774   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 775   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 776   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 777   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 778   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 779   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 780   rprintf(F,"     --stats                 give some file-transfer stats\n");
 781   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 782   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 783   rprintf(F,"     --progress              show progress during transfer\n");
 784   rprintf(F," -P                          same as --partial --progress\n");
 785   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 786   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 787   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 788   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 789   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 790   rprintf(F,"     --list-only             list the files instead of copying them\n");
 791   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
 792   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 793   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 794   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 795   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 796 #ifdef ICONV_OPTION
 797   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 798 #endif
 799   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 800   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 801   rprintf(F,"     --version               print version number\n");
 802   rprintf(F,"(-h) --help                  show this help (-h is --help only if used alone)\n");
 803
 804   rprintf(F,"\n");
 805   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 806   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 807   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 808 }
 809
 810 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 811       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 812       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 813       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 814       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 815       OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN, OPT_BWLIMIT,
 816       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 817
 818 static struct poptOption long_options[] = {
 819   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 820   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 821   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 822   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 823   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 824   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 825   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 826   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 827   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 828   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 829   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 830   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 831   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 832   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 833   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 834   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 835   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 836   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 837   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 838   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 839   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 840   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 841   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 842   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 843   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 844   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 845   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 846   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 847   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 848   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 849   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 850   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 851   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 852   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 853   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 854   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 855   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 856   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 857   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 858   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 859   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 860   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 861   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 862   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 863   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 864   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 865   {"omit-link-times", 'J', POPT_ARG_VAL,    &omit_link_times, 1, 0, 0 },
 866   {"no-omit-link-times",0, POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 867   {"no-J",             0,  POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 868   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 869   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 870   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 871   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 872   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 873   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 874   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 875   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 876   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 877   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 878   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 879   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 880   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 881   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 882   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 883   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 884   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 885   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 886   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 887   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 888   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 889   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 890   {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
 891   {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
 892   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 893   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 894   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 895   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 896   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 897   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 898   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 899   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 900   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 901   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 902   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 903   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 904   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 905   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 906   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 907   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 908   {"no-one-file-system",0, POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 909   {"no-x",             0,  POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 910   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 911   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 912   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 913   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 914   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 915   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 916   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
 917   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 918   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 919   {"preallocate",      0,  POPT_ARG_NONE,   &preallocate_files, 0, 0, 0},
 920   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
 921   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
 922   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 923   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 924   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 925   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 926   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 927   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 928   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 929   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 930   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 931   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 932   {"delete-missing-args",0,POPT_BIT_SET,    &missing_args, 2, 0, 0 },
 933   {"ignore-missing-args",0,POPT_BIT_SET,    &missing_args, 1, 0, 0 },
 934   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 935   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 936   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
 937   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
 938   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
 939   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
 940   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 941   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 942   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 943   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 944   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 945   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 946   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 947   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 948   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 949   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 950   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 951   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 952   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 953   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 954   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 955   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 956   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 957   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 958   {"fuzzy",           'y', POPT_ARG_NONE,   0, 'y', 0, 0 },
 959   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 960   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 961   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 962   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 963   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 964   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 965   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 966   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 967   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 968   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 969   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 970   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 971   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 972   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 973   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 974   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
 975   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 976   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 977   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 978   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 979   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 980   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 981   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 982   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 983   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 984   {"bwlimit",          0,  POPT_ARG_STRING, &bwlimit_arg, OPT_BWLIMIT, 0, 0 },
 985   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 986   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 987   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 988   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 989   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 990   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 991   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 992   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 993   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 994   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 995   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 996   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 997   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 998   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 999   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
1000   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
1001   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
1002   {"usermap",          0,  POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
1003   {"groupmap",         0,  POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
1004   {"chown",            0,  POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
1005   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
1006   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
1007   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
1008   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
1009   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
1010   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
1011   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1012 #ifdef ICONV_OPTION
1013   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
1014   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
1015 #endif
1016   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1017   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1018   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
1019   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1020   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1021   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
1022   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1023   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1024   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1025   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
1026   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
1027   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
1028   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1029   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1030   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
1031   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
1032   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
1033   /* All the following options switch us into daemon-mode option-parsing. */
1034   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1035   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1036   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1037   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1038   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1039   {0,0,0,0, 0, 0, 0}
1040 };
1041
1042 static void daemon_usage(enum logcode F)
1043 {
1044   print_rsync_version(F);
1045
1046   rprintf(F,"\n");
1047   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1048   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1049   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
1050   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1051   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1052   rprintf(F,"     --no-detach             do not detach from the parent\n");
1053   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1054   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1055   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1056   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1057   rprintf(F," -v, --verbose               increase verbosity\n");
1058   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1059   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1060   rprintf(F,"     --help                  show this help screen\n");
1061
1062   rprintf(F,"\n");
1063   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1064   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1065 }
1066
1067 static struct poptOption long_daemon_options[] = {
1068   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1069   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1070   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1071   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1072   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1073   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1074   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1075   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1076   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1077   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1078   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1079   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1080   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1081   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1082   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1083   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1084   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1085   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1086   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1087   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1088   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1089   {0,0,0,0, 0, 0, 0}
1090 };
1091
1092
1093 static char err_buf[200];
1094
1095
1096 /**
1097  * Store the option error message, if any, so that we can log the
1098  * connection attempt (which requires parsing the options), and then
1099  * show the error later on.
1100  **/
1101 void option_error(void)
1102 {
1103         if (!err_buf[0]) {
1104                 strlcpy(err_buf, "Error parsing options: option may "
1105                         "be supported on client but not on server?\n",
1106                         sizeof err_buf);
1107         }
1108
1109         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1110         msleep(20);
1111 }
1112
1113
1114 /**
1115  * Tweak the option table to disable all options that the rsyncd.conf
1116  * file has told us to refuse.
1117  **/
1118 static void set_refuse_options(char *bp)
1119 {
1120         struct poptOption *op;
1121         char *cp, shortname[2];
1122         int is_wild, found_match;
1123
1124         shortname[1] = '\0';
1125
1126         while (1) {
1127                 while (*bp == ' ') bp++;
1128                 if (!*bp)
1129                         break;
1130                 if ((cp = strchr(bp, ' ')) != NULL)
1131                         *cp= '\0';
1132                 is_wild = strpbrk(bp, "*?[") != NULL;
1133                 found_match = 0;
1134                 for (op = long_options; ; op++) {
1135                         *shortname = op->shortName;
1136                         if (!op->longName && !*shortname)
1137                                 break;
1138                         if ((op->longName && wildmatch(bp, op->longName))
1139                             || (*shortname && wildmatch(bp, shortname))) {
1140                                 if (op->argInfo == POPT_ARG_VAL)
1141                                         op->argInfo = POPT_ARG_NONE;
1142                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1143                                 found_match = 1;
1144                                 /* These flags are set to let us easily check
1145                                  * an implied option later in the code. */
1146                                 switch (*shortname) {
1147                                 case 'r': case 'd': case 'l': case 'p':
1148                                 case 't': case 'g': case 'o': case 'D':
1149                                         refused_archive_part = op->val;
1150                                         break;
1151                                 case 'z':
1152                                         refused_compress = op->val;
1153                                         break;
1154                                 case '\0':
1155                                         if (wildmatch("delete", op->longName))
1156                                                 refused_delete = op->val;
1157                                         else if (wildmatch("delete-before", op->longName))
1158                                                 refused_delete_before = op->val;
1159                                         else if (wildmatch("delete-during", op->longName))
1160                                                 refused_delete_during = op->val;
1161                                         else if (wildmatch("partial", op->longName))
1162                                                 refused_partial = op->val;
1163                                         else if (wildmatch("progress", op->longName))
1164                                                 refused_progress = op->val;
1165                                         else if (wildmatch("inplace", op->longName))
1166                                                 refused_inplace = op->val;
1167                                         else if (wildmatch("no-iconv", op->longName))
1168                                                 refused_no_iconv = op->val;
1169                                         break;
1170                                 }
1171                                 if (!is_wild)
1172                                         break;
1173                         }
1174                 }
1175                 if (!found_match) {
1176                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
1177                                 bp);
1178                 }
1179                 if (!cp)
1180                         break;
1181                 *cp = ' ';
1182                 bp = cp + 1;
1183         }
1184 }
1185
1186
1187 static int count_args(const char **argv)
1188 {
1189         int i = 0;
1190
1191         if (argv) {
1192                 while (argv[i] != NULL)
1193                         i++;
1194         }
1195
1196         return i;
1197 }
1198
1199
1200 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1201 {
1202         int reps, mult, make_compatible = 0;
1203         const char *arg;
1204         OFF_T size = 1;
1205
1206         for (arg = *size_arg; isDigit(arg); arg++) {}
1207         if (*arg == '.')
1208                 for (arg++; isDigit(arg); arg++) {}
1209         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1210         case 'b': case 'B':
1211                 reps = 0;
1212                 break;
1213         case 'k': case 'K':
1214                 reps = 1;
1215                 break;
1216         case 'm': case 'M':
1217                 reps = 2;
1218                 break;
1219         case 'g': case 'G':
1220                 reps = 3;
1221                 break;
1222         default:
1223                 return -1;
1224         }
1225         if (*arg == 'b' || *arg == 'B')
1226                 mult = 1000, make_compatible = 1, arg++;
1227         else if (!*arg || *arg == '+' || *arg == '-')
1228                 mult = 1024;
1229         else if (strncasecmp(arg, "ib", 2) == 0)
1230                 mult = 1024, arg += 2;
1231         else
1232                 return -1;
1233         while (reps--)
1234                 size *= mult;
1235         size *= atof(*size_arg);
1236         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1237                 size += atoi(arg), make_compatible = 1, arg += 2;
1238         if (*arg)
1239                 return -1;
1240         if (size > 0 && make_compatible && def_suf == 'b') {
1241                 /* We convert this manually because we may need %lld precision,
1242                  * and that's not a portable sprintf() escape. */
1243                 char buf[128], *s = buf + sizeof buf - 1;
1244                 OFF_T num = size;
1245                 *s = '\0';
1246                 while (num) {
1247                         *--s = (char)(num % 10) + '0';
1248                         num /= 10;
1249                 }
1250                 if (!(*size_arg = strdup(s)))
1251                         out_of_memory("parse_size_arg");
1252         }
1253         return size;
1254 }
1255
1256
1257 static void create_refuse_error(int which)
1258 {
1259         /* The "which" value is the index + OPT_REFUSED_BASE. */
1260         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1261         int n = snprintf(err_buf, sizeof err_buf,
1262                          "The server is configured to refuse --%s\n",
1263                          op->longName) - 1;
1264         if (op->shortName) {
1265                 snprintf(err_buf + n, sizeof err_buf - n,
1266                          " (-%c)\n", op->shortName);
1267         }
1268 }
1269
1270
1271 /**
1272  * Process command line arguments.  Called on both local and remote.
1273  *
1274  * @retval 1 if all options are OK; with globals set to appropriate
1275  * values
1276  *
1277  * @retval 0 on error, with err_buf containing an explanation
1278  **/
1279 int parse_arguments(int *argc_p, const char ***argv_p)
1280 {
1281         static poptContext pc;
1282         char *ref = lp_refuse_options(module_id);
1283         const char *arg, **argv = *argv_p;
1284         int argc = *argc_p;
1285         int opt;
1286
1287         if (ref && *ref)
1288                 set_refuse_options(ref);
1289         if (am_daemon) {
1290                 set_refuse_options("log-file*");
1291 #ifdef ICONV_OPTION
1292                 if (!*lp_charset(module_id))
1293                         set_refuse_options("iconv");
1294 #endif
1295         }
1296
1297 #ifdef ICONV_OPTION
1298         if (!am_daemon && protect_args <= 0 && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1299                 iconv_opt = strdup(arg);
1300 #endif
1301
1302         /* TODO: Call poptReadDefaultConfig; handle errors. */
1303
1304         /* The context leaks in case of an error, but if there's a
1305          * problem we always exit anyhow. */
1306         if (pc)
1307                 poptFreeContext(pc);
1308         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1309         if (!am_server)
1310                 poptReadDefaultConfig(pc, 0);
1311
1312         while ((opt = poptGetNextOpt(pc)) != -1) {
1313                 /* most options are handled automatically by popt;
1314                  * only special cases are returned and listed here. */
1315
1316                 switch (opt) {
1317                 case OPT_VERSION:
1318                         print_rsync_version(FINFO);
1319                         exit_cleanup(0);
1320
1321                 case OPT_SERVER:
1322                         if (!am_server) {
1323                                 /* Disable popt aliases on the server side and
1324                                  * then start parsing the options again. */
1325                                 poptFreeContext(pc);
1326                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1327                                                     long_options, 0);
1328                                 am_server = 1;
1329                         }
1330 #ifdef ICONV_OPTION
1331                         iconv_opt = NULL;
1332 #endif
1333                         break;
1334
1335                 case OPT_SENDER:
1336                         if (!am_server) {
1337                                 usage(FERROR);
1338                                 exit_cleanup(RERR_SYNTAX);
1339                         }
1340                         am_sender = 1;
1341                         break;
1342
1343                 case OPT_DAEMON:
1344                         if (am_daemon) {
1345                                 strlcpy(err_buf,
1346                                         "Attempt to hack rsync thwarted!\n",
1347                                         sizeof err_buf);
1348                                 return 0;
1349                         }
1350 #ifdef ICONV_OPTION
1351                         iconv_opt = NULL;
1352 #endif
1353                         protect_args = 0;
1354                         poptFreeContext(pc);
1355                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1356                                             long_daemon_options, 0);
1357                         while ((opt = poptGetNextOpt(pc)) != -1) {
1358                                 char **cpp;
1359                                 switch (opt) {
1360                                 case 'h':
1361                                         daemon_usage(FINFO);
1362                                         exit_cleanup(0);
1363
1364                                 case 'M':
1365                                         arg = poptGetOptArg(pc);
1366                                         if (!strchr(arg, '=')) {
1367                                                 rprintf(FERROR,
1368                                                     "--dparam value is missing an '=': %s\n",
1369                                                     arg);
1370                                                 goto daemon_error;
1371                                         }
1372                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1373                                         *cpp = strdup(arg);
1374                                         break;
1375
1376                                 case 'v':
1377                                         verbose++;
1378                                         break;
1379
1380                                 default:
1381                                         rprintf(FERROR,
1382                                             "rsync: %s: %s (in daemon mode)\n",
1383                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1384                                             poptStrerror(opt));
1385                                         goto daemon_error;
1386                                 }
1387                         }
1388
1389                         if (dparam_list.count && !set_dparams(1))
1390                                 exit_cleanup(RERR_SYNTAX);
1391
1392                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1393                                 snprintf(err_buf, sizeof err_buf,
1394                                          "the --temp-dir path is WAY too long.\n");
1395                                 return 0;
1396                         }
1397
1398                         if (!daemon_opt) {
1399                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1400                             daemon_error:
1401                                 rprintf(FERROR,
1402                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1403                                 exit_cleanup(RERR_SYNTAX);
1404                         }
1405
1406                         *argv_p = argv = poptGetArgs(pc);
1407                         *argc_p = argc = count_args(argv);
1408                         am_starting_up = 0;
1409                         daemon_opt = 0;
1410                         am_daemon = 1;
1411                         return 1;
1412
1413                 case OPT_MODIFY_WINDOW:
1414                         /* The value has already been set by popt, but
1415                          * we need to remember that we're using a
1416                          * non-default setting. */
1417                         modify_window_set = 1;
1418                         break;
1419
1420                 case OPT_FILTER:
1421                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1422                                         rule_template(0), 0);
1423                         break;
1424
1425                 case OPT_EXCLUDE:
1426                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1427                                         rule_template(0), XFLG_OLD_PREFIXES);
1428                         break;
1429
1430                 case OPT_INCLUDE:
1431                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1432                                         rule_template(FILTRULE_INCLUDE), XFLG_OLD_PREFIXES);
1433                         break;
1434
1435                 case OPT_EXCLUDE_FROM:
1436                 case OPT_INCLUDE_FROM:
1437                         arg = poptGetOptArg(pc);
1438                         if (sanitize_paths)
1439                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1440                         if (daemon_filter_list.head) {
1441                                 int rej;
1442                                 char *cp = strdup(arg);
1443                                 if (!cp)
1444                                         out_of_memory("parse_arguments");
1445                                 if (!*cp)
1446                                         rej = 1;
1447                                 else {
1448                                         char *dir = cp + (*cp == '/' ? module_dirlen : 0);
1449                                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1450                                         rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1451                                 }
1452                                 free(cp);
1453                                 if (rej)
1454                                         goto options_rejected;
1455                         }
1456                         parse_filter_file(&filter_list, arg,
1457                                 rule_template(opt == OPT_INCLUDE_FROM ? FILTRULE_INCLUDE : 0),
1458                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1459                         break;
1460
1461                 case 'a':
1462                         if (refused_archive_part) {
1463                                 create_refuse_error(refused_archive_part);
1464                                 return 0;
1465                         }
1466                         if (!recurse) /* preserve recurse == 2 */
1467                                 recurse = 1;
1468 #ifdef SUPPORT_LINKS
1469                         preserve_links = 1;
1470 #endif
1471                         preserve_perms = 1;
1472                         preserve_times = 1;
1473                         preserve_gid = 1;
1474                         preserve_uid = 1;
1475                         preserve_devices = 1;
1476                         preserve_specials = 1;
1477                         break;
1478
1479                 case 'D':
1480                         preserve_devices = preserve_specials = 1;
1481                         break;
1482
1483                 case OPT_NO_D:
1484                         preserve_devices = preserve_specials = 0;
1485                         break;
1486
1487                 case 'h':
1488                         human_readable++;
1489                         break;
1490
1491                 case 'H':
1492                         preserve_hard_links++;
1493                         break;
1494
1495                 case 'i':
1496                         itemize_changes++;
1497                         break;
1498
1499                 case 'v':
1500                         verbose++;
1501                         break;
1502
1503                 case 'y':
1504                         fuzzy_basis++;
1505                         break;
1506
1507                 case 'q':
1508                         quiet++;
1509                         break;
1510
1511                 case 'x':
1512                         one_file_system++;
1513                         break;
1514
1515                 case 'F':
1516                         switch (++F_option_cnt) {
1517                         case 1:
1518                                 parse_filter_str(&filter_list,": /.rsync-filter",rule_template(0),0);
1519                                 break;
1520                         case 2:
1521                                 parse_filter_str(&filter_list,"- .rsync-filter",rule_template(0),0);
1522                                 break;
1523                         }
1524                         break;
1525
1526                 case 'P':
1527                         if (refused_partial || refused_progress) {
1528                                 create_refuse_error(refused_partial
1529                                     ? refused_partial : refused_progress);
1530                                 return 0;
1531                         }
1532                         do_progress = 1;
1533                         keep_partial = 1;
1534                         break;
1535
1536                 case 'z':
1537                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1538                          || def_compress_level > Z_BEST_COMPRESSION) {
1539                                 snprintf(err_buf, sizeof err_buf,
1540                                         "--compress-level value is invalid: %d\n",
1541                                         def_compress_level);
1542                                 return 0;
1543                         }
1544                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1545                         if (do_compression && refused_compress) {
1546                                 create_refuse_error(refused_compress);
1547                                 return 0;
1548                         }
1549                         break;
1550
1551                 case 'M':
1552                         arg = poptGetOptArg(pc);
1553                         if (*arg != '-') {
1554                                 snprintf(err_buf, sizeof err_buf,
1555                                         "Remote option must start with a dash: %s\n", arg);
1556                                 return 0;
1557                         }
1558                         if (remote_option_cnt+2 >= remote_option_alloc) {
1559                                 remote_option_alloc += 16;
1560                                 remote_options = realloc_array(remote_options,
1561                                                         const char *, remote_option_alloc);
1562                                 if (!remote_options)
1563                                         out_of_memory("parse_arguments");
1564                                 if (!remote_option_cnt)
1565                                         remote_options[0] = "ARG0";
1566                         }
1567                         remote_options[++remote_option_cnt] = arg;
1568                         remote_options[remote_option_cnt+1] = NULL;
1569                         break;
1570
1571                 case OPT_WRITE_BATCH:
1572                         /* batch_name is already set */
1573                         write_batch = 1;
1574                         break;
1575
1576                 case OPT_ONLY_WRITE_BATCH:
1577                         /* batch_name is already set */
1578                         write_batch = -1;
1579                         break;
1580
1581                 case OPT_READ_BATCH:
1582                         /* batch_name is already set */
1583                         read_batch = 1;
1584                         break;
1585
1586                 case OPT_NO_ICONV:
1587 #ifdef ICONV_OPTION
1588                         iconv_opt = NULL;
1589 #endif
1590                         break;
1591
1592                 case OPT_MAX_SIZE:
1593                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1594                                 snprintf(err_buf, sizeof err_buf,
1595                                         "--max-size value is invalid: %s\n",
1596                                         max_size_arg);
1597                                 return 0;
1598                         }
1599                         break;
1600
1601                 case OPT_MIN_SIZE:
1602                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1603                                 snprintf(err_buf, sizeof err_buf,
1604                                         "--min-size value is invalid: %s\n",
1605                                         min_size_arg);
1606                                 return 0;
1607                         }
1608                         break;
1609
1610                 case OPT_BWLIMIT:
1611                         {
1612                                 OFF_T limit = parse_size_arg(&bwlimit_arg, 'K');
1613                                 if (limit < 0) {
1614                                         snprintf(err_buf, sizeof err_buf,
1615                                                 "--bwlimit value is invalid: %s\n", bwlimit_arg);
1616                                         return 0;
1617                                 }
1618                                 bwlimit = (limit + 512) / 1024;
1619                                 if (limit && !bwlimit) {
1620                                         snprintf(err_buf, sizeof err_buf,
1621                                                 "--bwlimit value is too small: %s\n", bwlimit_arg);
1622                                         return 0;
1623                                 }
1624                         }
1625                         break;
1626
1627                 case OPT_APPEND:
1628                         if (am_server)
1629                                 append_mode++;
1630                         else
1631                                 append_mode = 1;
1632                         break;
1633
1634                 case OPT_LINK_DEST:
1635 #ifdef SUPPORT_HARD_LINKS
1636                         link_dest = 1;
1637                         dest_option = "--link-dest";
1638                         goto set_dest_dir;
1639 #else
1640                         snprintf(err_buf, sizeof err_buf,
1641                                  "hard links are not supported on this %s\n",
1642                                  am_server ? "server" : "client");
1643                         return 0;
1644 #endif
1645
1646                 case OPT_COPY_DEST:
1647                         copy_dest = 1;
1648                         dest_option = "--copy-dest";
1649                         goto set_dest_dir;
1650
1651                 case OPT_COMPARE_DEST:
1652                         compare_dest = 1;
1653                         dest_option = "--compare-dest";
1654                 set_dest_dir:
1655                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1656                                 snprintf(err_buf, sizeof err_buf,
1657                                         "ERROR: at most %d %s args may be specified\n",
1658                                         MAX_BASIS_DIRS, dest_option);
1659                                 return 0;
1660                         }
1661                         /* We defer sanitizing this arg until we know what
1662                          * our destination directory is going to be. */
1663                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1664                         break;
1665
1666                 case OPT_CHMOD:
1667                         arg = poptGetOptArg(pc);
1668                         if (!parse_chmod(arg, &chmod_modes)) {
1669                                 snprintf(err_buf, sizeof err_buf,
1670                                     "Invalid argument passed to --chmod (%s)\n",
1671                                     arg);
1672                                 return 0;
1673                         }
1674                         break;
1675
1676                 case OPT_INFO:
1677                         arg = poptGetOptArg(pc);
1678                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1679                         break;
1680
1681                 case OPT_DEBUG:
1682                         arg = poptGetOptArg(pc);
1683                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1684                         break;
1685
1686                 case OPT_USERMAP:
1687                         if (usermap) {
1688                                 if (usermap_via_chown) {
1689                                         snprintf(err_buf, sizeof err_buf,
1690                                             "--usermap conflicts with prior --chown.\n");
1691                                         return 0;
1692                                 }
1693                                 snprintf(err_buf, sizeof err_buf,
1694                                     "You can only specify --usermap once.\n");
1695                                 return 0;
1696                         }
1697                         usermap = (char *)poptGetOptArg(pc);
1698                         usermap_via_chown = False;
1699                         break;
1700
1701                 case OPT_GROUPMAP:
1702                         if (groupmap) {
1703                                 if (groupmap_via_chown) {
1704                                         snprintf(err_buf, sizeof err_buf,
1705                                             "--groupmap conflicts with prior --chown.\n");
1706                                         return 0;
1707                                 }
1708                                 snprintf(err_buf, sizeof err_buf,
1709                                     "You can only specify --groupmap once.\n");
1710                                 return 0;
1711                         }
1712                         groupmap = (char *)poptGetOptArg(pc);
1713                         groupmap_via_chown = False;
1714                         break;
1715
1716                 case OPT_CHOWN: {
1717                         const char *chown = poptGetOptArg(pc);
1718                         int len;
1719                         if ((arg = strchr(chown, ':')) != NULL)
1720                                 len = arg++ - chown;
1721                         else
1722                                 len = strlen(chown);
1723                         if (len) {
1724                                 if (usermap) {
1725                                         if (!usermap_via_chown) {
1726                                                 snprintf(err_buf, sizeof err_buf,
1727                                                     "--chown conflicts with prior --usermap.\n");
1728                                                 return 0;
1729                                         }
1730                                         snprintf(err_buf, sizeof err_buf,
1731                                             "You can only specify a user-affecting --chown once.\n");
1732                                         return 0;
1733                                 }
1734                                 if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
1735                                         out_of_memory("parse_arguments");
1736                                 usermap_via_chown = True;
1737                         }
1738                         if (arg && *arg) {
1739                                 if (groupmap) {
1740                                         if (!groupmap_via_chown) {
1741                                                 snprintf(err_buf, sizeof err_buf,
1742                                                     "--chown conflicts with prior --groupmap.\n");
1743                                                 return 0;
1744                                         }
1745                                         snprintf(err_buf, sizeof err_buf,
1746                                             "You can only specify a group-affecting --chown once.\n");
1747                                         return 0;
1748                                 }
1749                                 if (asprintf(&groupmap, "*:%s", arg) < 0)
1750                                         out_of_memory("parse_arguments");
1751                                 groupmap_via_chown = True;
1752                         }
1753                         break;
1754                 }
1755
1756                 case OPT_HELP:
1757                         usage(FINFO);
1758                         exit_cleanup(0);
1759
1760                 case 'A':
1761 #ifdef SUPPORT_ACLS
1762                         preserve_acls = 1;
1763                         preserve_perms = 1;
1764                         break;
1765 #else
1766                         /* FIXME: this should probably be ignored with a
1767                          * warning and then countermeasures taken to
1768                          * restrict group and other access in the presence
1769                          * of any more restrictive ACLs, but this is safe
1770                          * for now */
1771                         snprintf(err_buf,sizeof(err_buf),
1772                                  "ACLs are not supported on this %s\n",
1773                                  am_server ? "server" : "client");
1774                         return 0;
1775 #endif
1776
1777                 case 'X':
1778 #ifdef SUPPORT_XATTRS
1779                         preserve_xattrs++;
1780                         break;
1781 #else
1782                         snprintf(err_buf,sizeof(err_buf),
1783                                  "extended attributes are not supported on this %s\n",
1784                                  am_server ? "server" : "client");
1785                         return 0;
1786 #endif
1787
1788                 default:
1789                         /* A large opt value means that set_refuse_options()
1790                          * turned this option off. */
1791                         if (opt >= OPT_REFUSED_BASE) {
1792                                 create_refuse_error(opt);
1793                                 return 0;
1794                         }
1795                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1796                                  am_server ? "on remote machine: " : "",
1797                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1798                                  poptStrerror(opt));
1799                         return 0;
1800                 }
1801         }
1802
1803         if (protect_args < 0) {
1804                 if (am_server)
1805                         protect_args = 0;
1806                 else if ((arg = getenv("RSYNC_PROTECT_ARGS")) != NULL && *arg)
1807                         protect_args = atoi(arg) ? 1 : 0;
1808                 else {
1809 #ifdef RSYNC_USE_PROTECTED_ARGS
1810                         protect_args = 1;
1811 #else
1812                         protect_args = 0;
1813 #endif
1814                 }
1815         }
1816
1817         if (human_readable > 1 && argc == 2 && !am_server) {
1818                 /* Allow the old meaning of 'h' (--help) on its own. */
1819                 usage(FINFO);
1820                 exit_cleanup(0);
1821         }
1822
1823         set_output_verbosity(verbose, DEFAULT_PRIORITY);
1824
1825         if (do_stats) {
1826                 parse_output_words(info_words, info_levels,
1827                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1828         }
1829
1830         if (human_readable) {
1831                 char buf[32];
1832                 snprintf(buf, sizeof buf, "%f", 3.14);
1833                 if (strchr(buf, '.') != NULL)
1834                         number_separator = ',';
1835                 else
1836                         number_separator = '.';
1837         }
1838
1839 #ifdef ICONV_OPTION
1840         if (iconv_opt && protect_args != 2) {
1841                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1842                         iconv_opt = NULL;
1843                 else
1844                         need_unsorted_flist = 1;
1845         }
1846         if (refused_no_iconv && !iconv_opt) {
1847                 create_refuse_error(refused_no_iconv);
1848                 return 0;
1849         }
1850 #endif
1851
1852         if (fuzzy_basis > 1)
1853                 fuzzy_basis = basis_dir_cnt + 1;
1854
1855         if (protect_args == 1 && am_server)
1856                 return 1;
1857
1858         *argv_p = argv = poptGetArgs(pc);
1859         *argc_p = argc = count_args(argv);
1860
1861 #ifndef SUPPORT_LINKS
1862         if (preserve_links && !am_sender) {
1863                 snprintf(err_buf, sizeof err_buf,
1864                          "symlinks are not supported on this %s\n",
1865                          am_server ? "server" : "client");
1866                 return 0;
1867         }
1868 #endif
1869
1870 #ifndef SUPPORT_HARD_LINKS
1871         if (preserve_hard_links) {
1872                 snprintf(err_buf, sizeof err_buf,
1873                          "hard links are not supported on this %s\n",
1874                          am_server ? "server" : "client");
1875                 return 0;
1876         }
1877 #endif
1878
1879 #ifdef SUPPORT_XATTRS
1880         if (am_root < 0 && preserve_xattrs > 1) {
1881                 snprintf(err_buf, sizeof err_buf,
1882                          "--fake-super conflicts with -XX\n");
1883                 return 0;
1884         }
1885 #else
1886         if (am_root < 0) {
1887                 snprintf(err_buf, sizeof err_buf,
1888                          "--fake-super requires an rsync with extended attributes enabled\n");
1889                 return 0;
1890         }
1891 #endif
1892
1893         if (block_size > MAX_BLOCK_SIZE) {
1894                 snprintf(err_buf, sizeof err_buf,
1895                          "--block-size=%lu is too large (max: %u)\n", block_size, MAX_BLOCK_SIZE);
1896                 return 0;
1897         }
1898
1899         if (write_batch && read_batch) {
1900                 snprintf(err_buf, sizeof err_buf,
1901                         "--write-batch and --read-batch can not be used together\n");
1902                 return 0;
1903         }
1904         if (write_batch > 0 || read_batch) {
1905                 if (am_server) {
1906                         rprintf(FINFO,
1907                                 "ignoring --%s-batch option sent to server\n",
1908                                 write_batch ? "write" : "read");
1909                         /* We don't actually exit_cleanup(), so that we can
1910                          * still service older version clients that still send
1911                          * batch args to server. */
1912                         read_batch = write_batch = 0;
1913                         batch_name = NULL;
1914                 } else if (dry_run)
1915                         write_batch = 0;
1916         } else if (write_batch < 0 && dry_run)
1917                 write_batch = 0;
1918         if (read_batch && files_from) {
1919                 snprintf(err_buf, sizeof err_buf,
1920                         "--read-batch cannot be used with --files-from\n");
1921                 return 0;
1922         }
1923         if (read_batch && remove_source_files) {
1924                 snprintf(err_buf, sizeof err_buf,
1925                         "--read-batch cannot be used with --remove-%s-files\n",
1926                         remove_source_files == 1 ? "source" : "sent");
1927                 return 0;
1928         }
1929         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1930                 snprintf(err_buf, sizeof err_buf,
1931                         "the batch-file name must be %d characters or less.\n",
1932                         MAX_BATCH_NAME_LEN);
1933                 return 0;
1934         }
1935
1936         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1937                 snprintf(err_buf, sizeof err_buf,
1938                          "the --temp-dir path is WAY too long.\n");
1939                 return 0;
1940         }
1941
1942         if (max_delete < 0 && max_delete != INT_MIN) {
1943                 /* Negative numbers are treated as "no deletions". */
1944                 max_delete = 0;
1945         }
1946
1947         if (compare_dest + copy_dest + link_dest > 1) {
1948                 snprintf(err_buf, sizeof err_buf,
1949                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1950                 return 0;
1951         }
1952
1953         if (files_from) {
1954                 if (recurse == 1) /* preserve recurse == 2 */
1955                         recurse = 0;
1956                 if (xfer_dirs < 0)
1957                         xfer_dirs = 1;
1958         }
1959
1960         if (argc < 2 && !read_batch && !am_server)
1961                 list_only |= 1;
1962
1963         if (xfer_dirs >= 4) {
1964                 parse_filter_str(&filter_list, "- /*/*", rule_template(0), 0);
1965                 recurse = xfer_dirs = 1;
1966         } else if (recurse)
1967                 xfer_dirs = 1;
1968         else if (xfer_dirs < 0)
1969                 xfer_dirs = list_only ? 1 : 0;
1970
1971         if (relative_paths < 0)
1972                 relative_paths = files_from? 1 : 0;
1973         if (!relative_paths)
1974                 implied_dirs = 0;
1975
1976         if (delete_before + !!delete_during + delete_after > 1) {
1977                 snprintf(err_buf, sizeof err_buf,
1978                         "You may not combine multiple --delete-WHEN options.\n");
1979                 return 0;
1980         }
1981         if (delete_before || delete_during || delete_after)
1982                 delete_mode = 1;
1983         else if (delete_mode || delete_excluded) {
1984                 /* Only choose now between before & during if one is refused. */
1985                 if (refused_delete_before) {
1986                         if (!refused_delete_during)
1987                                 delete_during = 1;
1988                         else {
1989                                 create_refuse_error(refused_delete_before);
1990                                 return 0;
1991                         }
1992                 } else if (refused_delete_during)
1993                         delete_before = 1;
1994                 delete_mode = 1;
1995         }
1996         if (!xfer_dirs && delete_mode) {
1997                 snprintf(err_buf, sizeof err_buf,
1998                         "--delete does not work without --recursive (-r) or --dirs (-d).\n");
1999                 return 0;
2000         }
2001
2002         if (missing_args == 3) /* simplify if both options were specified */
2003                 missing_args = 2;
2004         if (refused_delete && (delete_mode || missing_args == 2)) {
2005                 create_refuse_error(refused_delete);
2006                 return 0;
2007         }
2008
2009         if (remove_source_files) {
2010                 /* We only want to infer this refusal of --remove-source-files
2011                  * via the refusal of "delete", not any of the "delete-FOO"
2012                  * options. */
2013                 if (refused_delete && am_sender) {
2014                         create_refuse_error(refused_delete);
2015                         return 0;
2016                 }
2017                 need_messages_from_generator = 1;
2018         }
2019
2020         if (munge_symlinks && !am_daemon) {
2021                 STRUCT_STAT st;
2022                 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
2023                 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
2024                 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
2025                         rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
2026                                 prefix);
2027                         exit_cleanup(RERR_UNSUPPORTED);
2028                 }
2029         }
2030
2031         if (sanitize_paths) {
2032                 int i;
2033                 for (i = argc; i-- > 0; )
2034                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
2035                 if (tmpdir)
2036                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
2037                 if (backup_dir)
2038                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
2039         }
2040         if (daemon_filter_list.head && !am_sender) {
2041                 filter_rule_list *elp = &daemon_filter_list;
2042                 if (tmpdir) {
2043                         char *dir;
2044                         if (!*tmpdir)
2045                                 goto options_rejected;
2046                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
2047                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2048                         if (check_filter(elp, FLOG, dir, 1) < 0)
2049                                 goto options_rejected;
2050                 }
2051                 if (backup_dir) {
2052                         char *dir;
2053                         if (!*backup_dir)
2054                                 goto options_rejected;
2055                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
2056                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2057                         if (check_filter(elp, FLOG, dir, 1) < 0)
2058                                 goto options_rejected;
2059                 }
2060         }
2061
2062         if (!backup_suffix)
2063                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
2064         backup_suffix_len = strlen(backup_suffix);
2065         if (strchr(backup_suffix, '/') != NULL) {
2066                 snprintf(err_buf, sizeof err_buf,
2067                         "--suffix cannot contain slashes: %s\n",
2068                         backup_suffix);
2069                 return 0;
2070         }
2071         if (backup_dir) {
2072                 size_t len;
2073                 while (*backup_dir == '.' && backup_dir[1] == '/')
2074                         backup_dir += 2;
2075                 if (*backup_dir == '.' && backup_dir[1] == '\0')
2076                         backup_dir++;
2077                 len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
2078                 if (len > sizeof backup_dir_buf - 128) {
2079                         snprintf(err_buf, sizeof err_buf,
2080                                 "the --backup-dir path is WAY too long.\n");
2081                         return 0;
2082                 }
2083                 backup_dir_len = (int)len;
2084                 if (!backup_dir_len) {
2085                         backup_dir_len = -1;
2086                         backup_dir = NULL;
2087                 } else if (backup_dir_buf[backup_dir_len - 1] != '/') {
2088                         backup_dir_buf[backup_dir_len++] = '/';
2089                         backup_dir_buf[backup_dir_len] = '\0';
2090                 }
2091                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
2092         }
2093         if (backup_dir) {
2094                 /* No need for a suffix or a protect rule. */
2095         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
2096                 snprintf(err_buf, sizeof err_buf,
2097                         "--suffix cannot be empty %s\n", backup_dir_len < 0
2098                         ? "when --backup-dir is the same as the dest dir"
2099                         : "without a --backup-dir");
2100                 return 0;
2101         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
2102                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
2103                         "P *%s", backup_suffix);
2104                 parse_filter_str(&filter_list, backup_dir_buf, rule_template(0), 0);
2105         }
2106
2107         if (preserve_times) {
2108                 preserve_times = PRESERVE_FILE_TIMES;
2109                 if (!omit_dir_times)
2110                         preserve_times |= PRESERVE_DIR_TIMES;
2111 #ifdef CAN_SET_SYMLINK_TIMES
2112                 if (!omit_link_times)
2113                         preserve_times |= PRESERVE_LINK_TIMES;
2114 #endif
2115         }
2116
2117         if (make_backups && !backup_dir) {
2118                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
2119                 preserve_times &= ~PRESERVE_DIR_TIMES;
2120         }
2121
2122         if (stdout_format) {
2123                 if (am_server && log_format_has(stdout_format, 'I'))
2124                         stdout_format_has_i = 2;
2125                 else if (log_format_has(stdout_format, 'i'))
2126                         stdout_format_has_i = itemize_changes | 1;
2127                 if (!log_format_has(stdout_format, 'b')
2128                  && !log_format_has(stdout_format, 'c')
2129                  && !log_format_has(stdout_format, 'C'))
2130                         log_before_transfer = !am_server;
2131         } else if (itemize_changes) {
2132                 stdout_format = "%i %n%L";
2133                 stdout_format_has_i = itemize_changes;
2134                 log_before_transfer = !am_server;
2135         }
2136
2137         if (do_progress && !am_server) {
2138                 if (!log_before_transfer && INFO_EQ(NAME, 0))
2139                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
2140                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
2141         }
2142
2143         if (dry_run)
2144                 do_xfers = 0;
2145
2146         set_io_timeout(io_timeout);
2147
2148         if (INFO_GTE(NAME, 1) && !stdout_format) {
2149                 stdout_format = "%n%L";
2150                 log_before_transfer = !am_server;
2151         }
2152         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
2153                 stdout_format_has_o_or_i = 1;
2154
2155         if (logfile_name && !am_daemon) {
2156                 if (!logfile_format) {
2157                         logfile_format = "%i %n%L";
2158                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
2159                 } else {
2160                         if (log_format_has(logfile_format, 'i'))
2161                                 logfile_format_has_i = 1;
2162                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
2163                                 logfile_format_has_o_or_i = 1;
2164                 }
2165                 log_init(0);
2166         } else if (!am_daemon)
2167                 logfile_format = NULL;
2168
2169         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
2170                 bwlimit = daemon_bwlimit;
2171         if (bwlimit) {
2172                 bwlimit_writemax = (size_t)bwlimit * 128;
2173                 if (bwlimit_writemax < 512)
2174                         bwlimit_writemax = 512;
2175         }
2176
2177         if (sparse_files && inplace) {
2178                 /* Note: we don't check for this below, because --append is
2179                  * OK with --sparse (as long as redos are handled right). */
2180                 snprintf(err_buf, sizeof err_buf,
2181                          "--sparse cannot be used with --inplace\n");
2182                 return 0;
2183         }
2184
2185         if (append_mode) {
2186                 if (whole_file > 0) {
2187                         snprintf(err_buf, sizeof err_buf,
2188                                  "--append cannot be used with --whole-file\n");
2189                         return 0;
2190                 }
2191                 if (refused_inplace) {
2192                         create_refuse_error(refused_inplace);
2193                         return 0;
2194                 }
2195                 inplace = 1;
2196         }
2197
2198         if (delay_updates && !partial_dir)
2199                 partial_dir = tmp_partialdir;
2200
2201         if (inplace) {
2202 #ifdef HAVE_FTRUNCATE
2203                 if (partial_dir) {
2204                         snprintf(err_buf, sizeof err_buf,
2205                                  "--%s cannot be used with --%s\n",
2206                                  append_mode ? "append" : "inplace",
2207                                  delay_updates ? "delay-updates" : "partial-dir");
2208                         return 0;
2209                 }
2210                 /* --inplace implies --partial for refusal purposes, but we
2211                  * clear the keep_partial flag for internal logic purposes. */
2212                 if (refused_partial) {
2213                         create_refuse_error(refused_partial);
2214                         return 0;
2215                 }
2216                 keep_partial = 0;
2217 #else
2218                 snprintf(err_buf, sizeof err_buf,
2219                          "--%s is not supported on this %s\n",
2220                          append_mode ? "append" : "inplace",
2221                          am_server ? "server" : "client");
2222                 return 0;
2223 #endif
2224         } else {
2225                 if (keep_partial && !partial_dir && !am_server) {
2226                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2227                                 partial_dir = strdup(arg);
2228                 }
2229                 if (partial_dir) {
2230                         if (*partial_dir)
2231                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2232                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2233                                 partial_dir = NULL;
2234                         if (!partial_dir && refused_partial) {
2235                                 create_refuse_error(refused_partial);
2236                                 return 0;
2237                         }
2238                         keep_partial = 1;
2239                 }
2240         }
2241
2242         if (files_from) {
2243                 char *h, *p;
2244                 int q;
2245                 if (argc > 2 || (!am_daemon && !am_server && argc == 1)) {
2246                         usage(FERROR);
2247                         exit_cleanup(RERR_SYNTAX);
2248                 }
2249                 if (strcmp(files_from, "-") == 0) {
2250                         filesfrom_fd = 0;
2251                         if (am_server)
2252                                 filesfrom_host = ""; /* reading from socket */
2253                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2254                         if (am_server) {
2255                                 snprintf(err_buf, sizeof err_buf,
2256                                         "The --files-from sent to the server cannot specify a host.\n");
2257                                 return 0;
2258                         }
2259                         files_from = p;
2260                         filesfrom_host = h;
2261                         if (strcmp(files_from, "-") == 0) {
2262                                 snprintf(err_buf, sizeof err_buf,
2263                                         "Invalid --files-from remote filename\n");
2264                                 return 0;
2265                         }
2266                 } else {
2267                         if (sanitize_paths)
2268                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2269                         if (daemon_filter_list.head) {
2270                                 char *dir;
2271                                 if (!*files_from)
2272                                         goto options_rejected;
2273                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2274                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2275                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2276                                         goto options_rejected;
2277                         }
2278                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2279                         if (filesfrom_fd < 0) {
2280                                 snprintf(err_buf, sizeof err_buf,
2281                                         "failed to open files-from file %s: %s\n",
2282                                         files_from, strerror(errno));
2283                                 return 0;
2284                         }
2285                 }
2286         }
2287
2288         am_starting_up = 0;
2289
2290         return 1;
2291
2292   options_rejected:
2293         snprintf(err_buf, sizeof err_buf,
2294                 "Your options have been rejected by the server.\n");
2295         return 0;
2296 }
2297
2298
2299 /**
2300  * Construct a filtered list of options to pass through from the
2301  * client to the server.
2302  *
2303  * This involves setting options that will tell the server how to
2304  * behave, and also filtering out options that are processed only
2305  * locally.
2306  **/
2307 void server_options(char **args, int *argc_p)
2308 {
2309         static char argstr[64];
2310         int ac = *argc_p;
2311         uchar where;
2312         char *arg;
2313         int i, x;
2314
2315         /* This should always remain first on the server's command-line. */
2316         args[ac++] = "--server";
2317
2318         if (daemon_over_rsh > 0) {
2319                 args[ac++] = "--daemon";
2320                 *argc_p = ac;
2321                 /* if we're passing --daemon, we're done */
2322                 return;
2323         }
2324
2325         if (!am_sender)
2326                 args[ac++] = "--sender";
2327
2328         x = 1;
2329         argstr[0] = '-';
2330
2331         if (protect_args)
2332                 argstr[x++] = 's';
2333
2334         for (i = 0; i < verbose; i++)
2335                 argstr[x++] = 'v';
2336
2337         /* the -q option is intentionally left out */
2338         if (make_backups)
2339                 argstr[x++] = 'b';
2340         if (update_only)
2341                 argstr[x++] = 'u';
2342         if (!do_xfers) /* Note: NOT "dry_run"! */
2343                 argstr[x++] = 'n';
2344         if (preserve_links)
2345                 argstr[x++] = 'l';
2346         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2347          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2348                 argstr[x++] = 'd';
2349         if (am_sender) {
2350                 if (keep_dirlinks)
2351                         argstr[x++] = 'K';
2352                 if (prune_empty_dirs)
2353                         argstr[x++] = 'm';
2354                 if (omit_dir_times)
2355                         argstr[x++] = 'O';
2356                 if (omit_link_times)
2357                         argstr[x++] = 'J';
2358                 if (fuzzy_basis) {
2359                         argstr[x++] = 'y';
2360                         if (fuzzy_basis > 1)
2361                                 argstr[x++] = 'y';
2362                 }
2363         } else {
2364                 if (copy_links)
2365                         argstr[x++] = 'L';
2366                 if (copy_dirlinks)
2367                         argstr[x++] = 'k';
2368         }
2369
2370         if (whole_file > 0)
2371                 argstr[x++] = 'W';
2372         /* We don't need to send --no-whole-file, because it's the
2373          * default for remote transfers, and in any case old versions
2374          * of rsync will not understand it. */
2375
2376         if (preserve_hard_links) {
2377                 argstr[x++] = 'H';
2378                 if (preserve_hard_links > 1)
2379                         argstr[x++] = 'H';
2380         }
2381         if (preserve_uid)
2382                 argstr[x++] = 'o';
2383         if (preserve_gid)
2384                 argstr[x++] = 'g';
2385         if (preserve_devices) /* ignore preserve_specials here */
2386                 argstr[x++] = 'D';
2387         if (preserve_times)
2388                 argstr[x++] = 't';
2389         if (preserve_perms)
2390                 argstr[x++] = 'p';
2391         else if (preserve_executability && am_sender)
2392                 argstr[x++] = 'E';
2393 #ifdef SUPPORT_ACLS
2394         if (preserve_acls)
2395                 argstr[x++] = 'A';
2396 #endif
2397 #ifdef SUPPORT_XATTRS
2398         if (preserve_xattrs) {
2399                 argstr[x++] = 'X';
2400                 if (preserve_xattrs > 1)
2401                         argstr[x++] = 'X';
2402         }
2403 #endif
2404         if (recurse)
2405                 argstr[x++] = 'r';
2406         if (always_checksum)
2407                 argstr[x++] = 'c';
2408         if (cvs_exclude)
2409                 argstr[x++] = 'C';
2410         if (ignore_times)
2411                 argstr[x++] = 'I';
2412         if (relative_paths)
2413                 argstr[x++] = 'R';
2414         if (one_file_system) {
2415                 argstr[x++] = 'x';
2416                 if (one_file_system > 1)
2417                         argstr[x++] = 'x';
2418         }
2419         if (sparse_files)
2420                 argstr[x++] = 'S';
2421         if (do_compression)
2422                 argstr[x++] = 'z';
2423
2424         set_allow_inc_recurse();
2425
2426         /* Checking the pre-negotiated value allows --protocol=29 override. */
2427         if (protocol_version >= 30) {
2428                 /* We make use of the -e option to let the server know about
2429                  * any pre-release protocol version && some behavior flags. */
2430                 argstr[x++] = 'e';
2431 #if SUBPROTOCOL_VERSION != 0
2432                 if (protocol_version == PROTOCOL_VERSION) {
2433                         x += snprintf(argstr+x, sizeof argstr - x,
2434                                       "%d.%d",
2435                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2436                 } else
2437 #endif
2438                         argstr[x++] = '.';
2439                 if (allow_inc_recurse)
2440                         argstr[x++] = 'i';
2441 #ifdef CAN_SET_SYMLINK_TIMES
2442                 argstr[x++] = 'L';
2443 #endif
2444 #ifdef ICONV_OPTION
2445                 argstr[x++] = 's';
2446 #endif
2447         }
2448
2449         if (x >= (int)sizeof argstr) { /* Not possible... */
2450                 rprintf(FERROR, "argstr overflow in server_options().\n");
2451                 exit_cleanup(RERR_MALLOC);
2452         }
2453
2454         argstr[x] = '\0';
2455
2456         if (x > 1)
2457                 args[ac++] = argstr;
2458
2459 #ifdef ICONV_OPTION
2460         if (iconv_opt) {
2461                 char *set = strchr(iconv_opt, ',');
2462                 if (set)
2463                         set++;
2464                 else
2465                         set = iconv_opt;
2466                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2467                         goto oom;
2468                 args[ac++] = arg;
2469         }
2470 #endif
2471
2472         if (protect_args && !local_server) /* unprotected args stop here */
2473                 args[ac++] = NULL;
2474
2475         if (list_only > 1)
2476                 args[ac++] = "--list-only";
2477
2478         /* This makes sure that the remote rsync can handle deleting with -d
2479          * sans -r because the --no-r option was added at the same time. */
2480         if (xfer_dirs && !recurse && delete_mode && am_sender)
2481                 args[ac++] = "--no-r";
2482
2483         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2484                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2485                         goto oom;
2486                 args[ac++] = arg;
2487         }
2488
2489         if (preserve_devices) {
2490                 /* Note: sending "--devices" would not be backward-compatible. */
2491                 if (!preserve_specials)
2492                         args[ac++] = "--no-specials"; /* -D is already set. */
2493         } else if (preserve_specials)
2494                 args[ac++] = "--specials";
2495
2496         /* The server side doesn't use our log-format, but in certain
2497          * circumstances they need to know a little about the option. */
2498         if (stdout_format && am_sender) {
2499                 /* Use --log-format, not --out-format, for compatibility. */
2500                 if (stdout_format_has_i > 1)
2501                         args[ac++] = "--log-format=%i%I";
2502                 else if (stdout_format_has_i)
2503                         args[ac++] = "--log-format=%i";
2504                 else if (stdout_format_has_o_or_i)
2505                         args[ac++] = "--log-format=%o";
2506                 else if (!verbose)
2507                         args[ac++] = "--log-format=X";
2508         }
2509
2510         if (block_size) {
2511                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2512                         goto oom;
2513                 args[ac++] = arg;
2514         }
2515
2516         if (io_timeout) {
2517                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2518                         goto oom;
2519                 args[ac++] = arg;
2520         }
2521
2522         if (bwlimit) {
2523                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2524                         goto oom;
2525                 args[ac++] = arg;
2526         }
2527
2528         if (backup_dir) {
2529                 args[ac++] = "--backup-dir";
2530                 args[ac++] = backup_dir;
2531         }
2532
2533         /* Only send --suffix if it specifies a non-default value. */
2534         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2535                 /* We use the following syntax to avoid weirdness with '~'. */
2536                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2537                         goto oom;
2538                 args[ac++] = arg;
2539         }
2540
2541         if (am_sender) {
2542                 if (max_delete > 0) {
2543                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2544                                 goto oom;
2545                         args[ac++] = arg;
2546                 } else if (max_delete == 0)
2547                         args[ac++] = "--max-delete=-1";
2548                 if (min_size) {
2549                         args[ac++] = "--min-size";
2550                         args[ac++] = min_size_arg;
2551                 }
2552                 if (max_size) {
2553                         args[ac++] = "--max-size";
2554                         args[ac++] = max_size_arg;
2555                 }
2556                 if (delete_before)
2557                         args[ac++] = "--delete-before";
2558                 else if (delete_during == 2)
2559                         args[ac++] = "--delete-delay";
2560                 else if (delete_during)
2561                         args[ac++] = "--delete-during";
2562                 else if (delete_after)
2563                         args[ac++] = "--delete-after";
2564                 else if (delete_mode && !delete_excluded)
2565                         args[ac++] = "--delete";
2566                 if (delete_excluded)
2567                         args[ac++] = "--delete-excluded";
2568                 if (force_delete)
2569                         args[ac++] = "--force";
2570                 if (write_batch < 0)
2571                         args[ac++] = "--only-write-batch=X";
2572                 if (am_root > 1)
2573                         args[ac++] = "--super";
2574                 if (size_only)
2575                         args[ac++] = "--size-only";
2576                 if (do_stats)
2577                         args[ac++] = "--stats";
2578         } else {
2579                 if (skip_compress) {
2580                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2581                                 goto oom;
2582                         args[ac++] = arg;
2583                 }
2584         }
2585
2586         /* --delete-missing-args needs the cooperation of both sides, but
2587          * the sender can handle --ignore-missing-args by itself. */
2588         if (missing_args == 2)
2589                 args[ac++] = "--delete-missing-args";
2590         else if (missing_args == 1 && !am_sender)
2591                 args[ac++] = "--ignore-missing-args";
2592
2593         if (modify_window_set) {
2594                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
2595                         goto oom;
2596                 args[ac++] = arg;
2597         }
2598
2599         if (checksum_seed) {
2600                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2601                         goto oom;
2602                 args[ac++] = arg;
2603         }
2604
2605         if (partial_dir && am_sender) {
2606                 if (partial_dir != tmp_partialdir) {
2607                         args[ac++] = "--partial-dir";
2608                         args[ac++] = partial_dir;
2609                 }
2610                 if (delay_updates)
2611                         args[ac++] = "--delay-updates";
2612         } else if (keep_partial && am_sender)
2613                 args[ac++] = "--partial";
2614
2615         if (ignore_errors)
2616                 args[ac++] = "--ignore-errors";
2617
2618         if (copy_unsafe_links)
2619                 args[ac++] = "--copy-unsafe-links";
2620
2621         if (safe_symlinks)
2622                 args[ac++] = "--safe-links";
2623
2624         if (numeric_ids)
2625                 args[ac++] = "--numeric-ids";
2626
2627         if (use_qsort)
2628                 args[ac++] = "--use-qsort";
2629
2630         if (am_sender) {
2631                 if (usermap) {
2632                         if (asprintf(&arg, "--usermap=%s", usermap) < 0)
2633                                 goto oom;
2634                         args[ac++] = arg;
2635                 }
2636
2637                 if (groupmap) {
2638                         if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
2639                                 goto oom;
2640                         args[ac++] = arg;
2641                 }
2642
2643                 if (ignore_existing)
2644                         args[ac++] = "--ignore-existing";
2645
2646                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2647                 if (ignore_non_existing)
2648                         args[ac++] = "--existing";
2649
2650                 if (tmpdir) {
2651                         args[ac++] = "--temp-dir";
2652                         args[ac++] = tmpdir;
2653                 }
2654
2655                 if (basis_dir[0]) {
2656                         /* the server only needs this option if it is not the sender,
2657                          *   and it may be an older version that doesn't know this
2658                          *   option, so don't send it if client is the sender.
2659                          */
2660                         for (i = 0; i < basis_dir_cnt; i++) {
2661                                 args[ac++] = dest_option;
2662                                 args[ac++] = basis_dir[i];
2663                         }
2664                 }
2665         }
2666
2667         /* What flags do we need to send to the other side? */
2668         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2669         arg = make_output_option(info_words, info_levels, where);
2670         if (arg)
2671                 args[ac++] = arg;
2672
2673         arg = make_output_option(debug_words, debug_levels, where);
2674         if (arg)
2675                 args[ac++] = arg;
2676
2677         if (append_mode) {
2678                 if (append_mode > 1)
2679                         args[ac++] = "--append";
2680                 args[ac++] = "--append";
2681         } else if (inplace)
2682                 args[ac++] = "--inplace";
2683
2684         if (files_from && (!am_sender || filesfrom_host)) {
2685                 if (filesfrom_host) {
2686                         args[ac++] = "--files-from";
2687                         args[ac++] = files_from;
2688                         if (eol_nulls)
2689                                 args[ac++] = "--from0";
2690                 } else {
2691                         args[ac++] = "--files-from=-";
2692                         args[ac++] = "--from0";
2693                 }
2694                 if (!relative_paths)
2695                         args[ac++] = "--no-relative";
2696         }
2697         /* It's OK that this checks the upper-bound of the protocol_version. */
2698         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2699                 args[ac++] = "--no-implied-dirs";
2700
2701         if (remove_source_files == 1)
2702                 args[ac++] = "--remove-source-files";
2703         else if (remove_source_files)
2704                 args[ac++] = "--remove-sent-files";
2705
2706         if (preallocate_files && am_sender)
2707                 args[ac++] = "--preallocate";
2708
2709         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2710                 rprintf(FERROR, "argc overflow in server_options().\n");
2711                 exit_cleanup(RERR_MALLOC);
2712         }
2713
2714         if (remote_option_cnt) {
2715                 int j;
2716                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2717                         rprintf(FERROR, "too many remote options specified.\n");
2718                         exit_cleanup(RERR_SYNTAX);
2719                 }
2720                 for (j = 1; j <= remote_option_cnt; j++)
2721                         args[ac++] = (char*)remote_options[j];
2722         }
2723
2724         *argc_p = ac;
2725         return;
2726
2727     oom:
2728         out_of_memory("server_options");
2729 }
2730
2731 /* If str points to a valid hostspec, return allocated memory containing the
2732  * [USER@]HOST part of the string, and set the path_start_ptr to the part of
2733  * the string after the host part.  Otherwise, return NULL.  If port_ptr is
2734  * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
2735  * *port_ptr if a port number is found.  Note that IPv6 IPs will have their
2736  * (required for parsing) [ and ] chars elided from the returned string. */
2737 static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
2738 {
2739         char *s, *host_start = str;
2740         int hostlen = 0, userlen = 0;
2741         char *ret;
2742
2743         for (s = str; ; s++) {
2744                 if (!*s) {
2745                         /* It is only OK if we run out of string with rsync:// */
2746                         if (!port_ptr)
2747                                 return NULL;
2748                         if (!hostlen)
2749                                 hostlen = s - host_start;
2750                         break;
2751                 }
2752                 if (*s == ':' || *s == '/') {
2753                         if (!hostlen)
2754                                 hostlen = s - host_start;
2755                         if (*s++ == '/') {
2756                                 if (!port_ptr)
2757                                         return NULL;
2758                         } else if (port_ptr) {
2759                                 *port_ptr = atoi(s);
2760                                 while (isDigit(s)) s++;
2761                                 if (*s && *s++ != '/')
2762                                         return NULL;
2763                         }
2764                         break;
2765                 }
2766                 if (*s == '@') {
2767                         userlen = s - str + 1;
2768                         host_start = s + 1;
2769                 } else if (*s == '[') {
2770                         if (s != host_start++)
2771                                 return NULL;
2772                         while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
2773                         hostlen = s - host_start;
2774                         if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
2775                                 return NULL;
2776                 }
2777         }
2778
2779         *path_start_ptr = s;
2780         ret = new_array(char, userlen + hostlen + 1);
2781         if (userlen)
2782                 strlcpy(ret, str, userlen + 1);
2783         strlcpy(ret + userlen, host_start, hostlen + 1);
2784         return ret;
2785 }
2786
2787 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2788  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2789  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2790  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2791  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2792  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2793  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2794 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2795 {
2796         char *path;
2797
2798         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2799                 *host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
2800                 if (*host_ptr) {
2801                         if (!*port_ptr)
2802                                 *port_ptr = RSYNC_PORT;
2803                         return path;
2804                 }
2805         }
2806
2807         *host_ptr = parse_hostspec(s, &path, NULL);
2808         if (!*host_ptr)
2809                 return NULL;
2810
2811         if (*path == ':') {
2812                 if (port_ptr && !*port_ptr)
2813                         *port_ptr = RSYNC_PORT;
2814                 return path + 1;
2815         }
2816         if (port_ptr)
2817                 *port_ptr = 0;
2818
2819         return path;
2820 }