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) 2002-2009 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/zlib.h"
  26
  27 extern int module_id;
  28 extern int local_server;
  29 extern int sanitize_paths;
  30 extern int daemon_over_rsh;
  31 extern unsigned int module_dirlen;
  32 extern struct filter_list_struct filter_list;
  33 extern struct filter_list_struct daemon_filter_list;
  34
  35 int make_backups = 0;
  36
  37 /**
  38  * If 1, send the whole file as literal data rather than trying to
  39  * create an incremental diff.
  40  *
  41  * If -1, then look at whether we're local or remote and go by that.
  42  *
  43  * @sa disable_deltas_p()
  44  **/
  45 int whole_file = -1;
  46
  47 int append_mode = 0;
  48 int keep_dirlinks = 0;
  49 int copy_dirlinks = 0;
  50 int copy_links = 0;
  51 int preserve_links = 0;
  52 int preserve_hard_links = 0;
  53 int preserve_acls = 0;
  54 int preserve_xattrs = 0;
  55 int preserve_perms = 0;
  56 int preserve_executability = 0;
  57 int preserve_devices = 0;
  58 int preserve_specials = 0;
  59 int preserve_uid = 0;
  60 int preserve_gid = 0;
  61 int preserve_times = 0;
  62 int update_only = 0;
  63 int cvs_exclude = 0;
  64 int dry_run = 0;
  65 int do_xfers = 1;
  66 int ignore_times = 0;
  67 int delete_mode = 0;
  68 int delete_during = 0;
  69 int delete_before = 0;
  70 int delete_after = 0;
  71 int delete_excluded = 0;
  72 int remove_source_files = 0;
  73 int one_file_system = 0;
  74 int protocol_version = PROTOCOL_VERSION;
  75 int sparse_files = 0;
  76 int do_compression = 0;
  77 int def_compress_level = Z_DEFAULT_COMPRESSION;
  78 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  79 int am_server = 0;
  80 int am_sender = 0;
  81 int am_starting_up = 1;
  82 int relative_paths = -1;
  83 int implied_dirs = 1;
  84 int numeric_ids = 0;
  85 int msgs2stderr = 0;
  86 int allow_8bit_chars = 0;
  87 int force_delete = 0;
  88 int io_timeout = 0;
  89 int prune_empty_dirs = 0;
  90 int use_qsort = 0;
  91 char *files_from = NULL;
  92 int filesfrom_fd = -1;
  93 char *filesfrom_host = NULL;
  94 int eol_nulls = 0;
  95 int protect_args = 0;
  96 int human_readable = 1;
  97 int recurse = 0;
  98 int allow_inc_recurse = 1;
  99 int xfer_dirs = -1;
 100 int am_daemon = 0;
 101 int connect_timeout = 0;
 102 int keep_partial = 0;
 103 int safe_symlinks = 0;
 104 int copy_unsafe_links = 0;
 105 int munge_symlinks = 0;
 106 int size_only = 0;
 107 int daemon_bwlimit = 0;
 108 int bwlimit = 0;
 109 int fuzzy_basis = 0;
 110 size_t bwlimit_writemax = 0;
 111 int ignore_existing = 0;
 112 int ignore_non_existing = 0;
 113 int need_messages_from_generator = 0;
 114 int max_delete = INT_MIN;
 115 OFF_T max_size = 0;
 116 OFF_T min_size = 0;
 117 int ignore_errors = 0;
 118 int modify_window = 0;
 119 int blocking_io = -1;
 120 int checksum_seed = 0;
 121 int inplace = 0;
 122 int delay_updates = 0;
 123 long block_size = 0; /* "long" because popt can't set an int32. */
 124 char number_separator;
 125 char *skip_compress = NULL;
 126 item_list dparam_list = EMPTY_ITEM_LIST;
 127
 128 /** Network address family. **/
 129 int default_af_hint
 130 #ifdef INET6
 131         = 0;            /* Any protocol */
 132 #else
 133         = AF_INET;      /* Must use IPv4 */
 134 # ifdef AF_INET6
 135 #  undef AF_INET6
 136 # endif
 137 # define AF_INET6 AF_INET /* make -6 option a no-op */
 138 #endif
 139
 140 /** Do not go into the background when run as --daemon.  Good
 141  * for debugging and required for running as a service on W32,
 142  * or under Unix process-monitors. **/
 143 int no_detach
 144 #if defined _WIN32 || defined __WIN32__
 145         = 1;
 146 #else
 147         = 0;
 148 #endif
 149
 150 int write_batch = 0;
 151 int read_batch = 0;
 152 int backup_dir_len = 0;
 153 int backup_suffix_len;
 154 unsigned int backup_dir_remainder;
 155
 156 char *backup_suffix = NULL;
 157 char *tmpdir = NULL;
 158 char *partial_dir = NULL;
 159 char *basis_dir[MAX_BASIS_DIRS+1];
 160 char *config_file = NULL;
 161 char *shell_cmd = NULL;
 162 char *logfile_name = NULL;
 163 char *logfile_format = NULL;
 164 char *stdout_format = NULL;
 165 char *password_file = NULL;
 166 char *rsync_path = RSYNC_PATH;
 167 char *backup_dir = NULL;
 168 char backup_dir_buf[MAXPATHLEN];
 169 char *sockopts = NULL;
 170 char *usermap = NULL;
 171 char *groupmap = NULL;
 172 int rsync_port = 0;
 173 int compare_dest = 0;
 174 int copy_dest = 0;
 175 int link_dest = 0;
 176 int basis_dir_cnt = 0;
 177 char *dest_option = NULL;
 178
 179 static int remote_option_alloc = 0;
 180 int remote_option_cnt = 0;
 181 const char **remote_options = NULL;
 182
 183 int quiet = 0;
 184 int output_motd = 1;
 185 int log_before_transfer = 0;
 186 int stdout_format_has_i = 0;
 187 int stdout_format_has_o_or_i = 0;
 188 int logfile_format_has_i = 0;
 189 int logfile_format_has_o_or_i = 0;
 190 int always_checksum = 0;
 191 int list_only = 0;
 192
 193 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 194 char *batch_name = NULL;
 195
 196 int need_unsorted_flist = 0;
 197 #ifdef ICONV_OPTION
 198 char *iconv_opt = ICONV_OPTION;
 199 #endif
 200
 201 struct chmod_mode_struct *chmod_modes = NULL;
 202
 203 static const char *debug_verbosity[] = {
 204         /*0*/ NULL,
 205         /*1*/ NULL,
 206         /*2*/ "bind,cmd,connect,del,deltasum,dup,filter,flist,iconv",
 207         /*3*/ "acl,backup,deltasum2,del2,exit,filter2,flist2,fuzzy,genr,own,recv,send,time",
 208         /*4*/ "cmd2,deltasum3,del3,exit2,flist3,iconv2,own2,proto,time2",
 209         /*5*/ "chdir,deltasum4,flist4,fuzzy2,hash,hlink",
 210 };
 211
 212 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 213
 214 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 215         /*0*/ NULL,
 216         /*1*/ "copy,del,flist,misc,name,stats,symsafe",
 217         /*2*/ "backup,mount,name2,remove,skip",
 218 };
 219
 220 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 221
 222 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 223
 224 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 225 #define HELP_PRIORITY 1         /* The help output uses this level. */
 226 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 227 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 228
 229 #define W_CLI (1<<0)    /* client side */
 230 #define W_SRV (1<<1)    /* server side */
 231 #define W_SND (1<<2)    /* sending side */
 232 #define W_REC (1<<3)    /* receiving side */
 233
 234 struct output_struct {
 235         char *name;     /* The name of the info/debug flag. */
 236         char *help;     /* The description of the info/debug flag. */
 237         uchar namelen;  /* The length of the name string. */
 238         uchar flag;     /* The flag's value, for consistency check. */
 239         uchar where;    /* Bits indicating where the flag is used. */
 240         uchar priority; /* See *_PRIORITY defines. */
 241 };
 242
 243 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 244
 245 static struct output_struct info_words[COUNT_INFO+1] = {
 246         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 247         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 248         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 249         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 250         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information"),
 251         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 252         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 253         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 254         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 255         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 256         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 257         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 258         { NULL, "--info", 0, 0, 0, 0 }
 259 };
 260
 261 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 262
 263 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 264         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 265         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 266         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 267         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 268         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events"),
 269         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 270         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 271         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 272         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 273         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-2)"),
 274         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 275         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 276         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 277         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 278         DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
 279         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions"),
 280         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
 281         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 282         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 283         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 284         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 285         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 286         { NULL, "--debug", 0, 0, 0, 0 }
 287 };
 288
 289 static int verbose = 0;
 290 static int do_stats = 0;
 291 static int do_progress = 0;
 292 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 293 static int omit_dir_times = 0;
 294 static int F_option_cnt = 0;
 295 static int modify_window_set;
 296 static int itemize_changes = 0;
 297 static int refused_delete, refused_archive_part, refused_compress;
 298 static int refused_partial, refused_progress, refused_delete_before;
 299 static int refused_delete_during;
 300 static int refused_inplace, refused_no_iconv;
 301 static BOOL usermap_via_chown, groupmap_via_chown;
 302 static char *max_size_arg, *min_size_arg;
 303 static char tmp_partialdir[] = ".~tmp~";
 304
 305 /** Local address to bind.  As a character string because it's
 306  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 307  * address, or a hostname. **/
 308 char *bind_address;
 309
 310 static void output_item_help(struct output_struct *words);
 311
 312 /* This constructs a string that represents all the options set for either
 313  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 314  * This is used both when conveying the user's options to the server, and
 315  * when the help output wants to tell the user what options are implied. */
 316 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 317 {
 318         char *str = words == info_words ? "--info=" : "--debug=";
 319         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 320         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 321         char *buf;
 322
 323         memset(counts, 0, sizeof counts);
 324
 325         for (j = 0; words[j].name; j++) {
 326                 if (words[j].flag != j) {
 327                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 328                                 words == info_words ? "INFO_" : "DEBUG_",
 329                                 words[j].name, words[j].flag, j);
 330                         exit_cleanup(RERR_UNSUPPORTED);
 331                 }
 332                 if (!(words[j].where & where))
 333                         continue;
 334                 if (words[j].priority == DEFAULT_PRIORITY) {
 335                         /* Implied items don't need to be mentioned. */
 336                         skipped++;
 337                         continue;
 338                 }
 339                 len += len ? 1 : strlen(str);
 340                 len += strlen(words[j].name);
 341                 len += levels[j] == 1 ? 0 : 1;
 342
 343                 if (words[j].priority == HELP_PRIORITY)
 344                         continue; /* no abbreviating for help */
 345
 346                 assert(levels[j] <= MAX_OUT_LEVEL);
 347                 if (++counts[levels[j]] > max) {
 348                         /* Determine which level has the most items. */
 349                         lev = levels[j];
 350                         max = counts[lev];
 351                 }
 352         }
 353
 354         /* Sanity check the COUNT_* define against the length of the table. */
 355         if (j != word_count) {
 356                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 357                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 358                         j, word_count);
 359                 exit_cleanup(RERR_UNSUPPORTED);
 360         }
 361
 362         if (!len)
 363                 return NULL;
 364
 365         len++;
 366         if (!(buf = new_array(char, len)))
 367                 out_of_memory("make_output_option");
 368         pos = 0;
 369
 370         if (skipped || max < 5)
 371                 lev = -1;
 372         else {
 373                 if (lev == 0)
 374                         pos += snprintf(buf, len, "%sNONE", str);
 375                 else if (lev == 1)
 376                         pos += snprintf(buf, len, "%sALL", str);
 377                 else
 378                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 379         }
 380
 381         for (j = 0; words[j].name && pos < len; j++) {
 382                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 383                         continue;
 384                 if (pos)
 385                         buf[pos++] = ',';
 386                 else
 387                         pos += strlcpy(buf+pos, str, len-pos);
 388                 if (pos < len)
 389                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 390                 /* Level 1 is implied by the name alone. */
 391                 if (levels[j] != 1 && pos < len)
 392                         buf[pos++] = '0' + levels[j];
 393         }
 394
 395         buf[pos] = '\0';
 396
 397         return buf;
 398 }
 399
 400 static void parse_output_words(struct output_struct *words, short *levels,
 401                                const char *str, uchar priority)
 402 {
 403         const char *s;
 404         int j, len, lev;
 405
 406         if (!str)
 407                 return;
 408
 409         while (*str) {
 410                 if ((s = strchr(str, ',')) != NULL)
 411                         len = s++ - str;
 412                 else
 413                         len = strlen(str);
 414                 while (len && isDigit(str+len-1))
 415                         len--;
 416                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 417                 if (lev > MAX_OUT_LEVEL)
 418                         lev = MAX_OUT_LEVEL;
 419                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 420                         output_item_help(words);
 421                         exit_cleanup(0);
 422                 }
 423                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 424                         len = lev = 0;
 425                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 426                         len = 0;
 427                 for (j = 0; words[j].name; j++) {
 428                         if (!len
 429                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 430                                 if (priority >= words[j].priority) {
 431                                         words[j].priority = priority;
 432                                         levels[j] = lev;
 433                                 }
 434                                 if (len)
 435                                         break;
 436                         }
 437                 }
 438                 if (len && !words[j].name) {
 439                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 440                                 words[j].help, len, str);
 441                         exit_cleanup(RERR_SYNTAX);
 442                 }
 443                 if (!s)
 444                         break;
 445                 str = s;
 446         }
 447 }
 448
 449 /* Tell the user what all the info or debug flags mean. */
 450 static void output_item_help(struct output_struct *words)
 451 {
 452         short *levels = words == info_words ? info_levels : debug_levels;
 453         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 454         char buf[128], *opt, *fmt = "%-10s %s\n";
 455         int j;
 456
 457         reset_output_levels();
 458
 459         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 460         rprintf(FINFO, "\n");
 461         for (j = 0; words[j].name; j++)
 462                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 463         rprintf(FINFO, "\n");
 464
 465         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 466                  words[j].help, MAX_OUT_LEVEL);
 467         rprintf(FINFO, fmt, "ALL", buf);
 468
 469         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 470                  words[j].help);
 471         rprintf(FINFO, fmt, "NONE", buf);
 472
 473         rprintf(FINFO, fmt, "HELP", "Output this help message");
 474         rprintf(FINFO, "\n");
 475         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 476
 477         for (j = 1; j <= MAX_VERBOSITY; j++) {
 478                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 479                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 480                 if (opt) {
 481                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 482                         free(opt);
 483                 }
 484                 reset_output_levels();
 485         }
 486 }
 487
 488 /* The --verbose option now sets info+debug flags. */
 489 static void set_output_verbosity(int level, uchar priority)
 490 {
 491         int j;
 492
 493         if (level > MAX_VERBOSITY)
 494                 level = MAX_VERBOSITY;
 495
 496         for (j = 1; j <= level; j++) {
 497                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 498                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 499         }
 500 }
 501
 502 /* Limit the info+debug flag levels given a verbose-option level limit. */
 503 void limit_output_verbosity(int level)
 504 {
 505         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 506         int j;
 507
 508         if (level > MAX_VERBOSITY)
 509                 return;
 510
 511         memset(info_limits, 0, sizeof info_limits);
 512         memset(debug_limits, 0, sizeof debug_limits);
 513
 514         /* Compute the level limits in the above arrays. */
 515         for (j = 1; j <= level; j++) {
 516                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 517                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 518         }
 519
 520         for (j = 0; j < COUNT_INFO; j++) {
 521                 if (info_levels[j] > info_limits[j])
 522                         info_levels[j] = info_limits[j];
 523         }
 524
 525         for (j = 0; j < COUNT_DEBUG; j++) {
 526                 if (debug_levels[j] > debug_limits[j])
 527                         debug_levels[j] = debug_limits[j];
 528         }
 529 }
 530
 531 void reset_output_levels(void)
 532 {
 533         int j;
 534
 535         memset(info_levels, 0, sizeof info_levels);
 536         memset(debug_levels, 0, sizeof debug_levels);
 537
 538         for (j = 0; j < COUNT_INFO; j++)
 539                 info_words[j].priority = DEFAULT_PRIORITY;
 540
 541         for (j = 0; j < COUNT_DEBUG; j++)
 542                 debug_words[j].priority = DEFAULT_PRIORITY;
 543 }
 544
 545 void negate_output_levels(void)
 546 {
 547         int j;
 548
 549         for (j = 0; j < COUNT_INFO; j++)
 550                 info_levels[j] *= -1;
 551
 552         for (j = 0; j < COUNT_DEBUG; j++)
 553                 debug_levels[j] *= -1;
 554 }
 555
 556 static void print_rsync_version(enum logcode f)
 557 {
 558         char *subprotocol = "";
 559         char const *got_socketpair = "no ";
 560         char const *have_inplace = "no ";
 561         char const *hardlinks = "no ";
 562         char const *symtimes = "no ";
 563         char const *acls = "no ";
 564         char const *xattrs = "no ";
 565         char const *links = "no ";
 566         char const *iconv = "no ";
 567         char const *ipv6 = "no ";
 568         STRUCT_STAT *dumstat;
 569
 570 #if SUBPROTOCOL_VERSION != 0
 571         if (asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION) < 0)
 572                 out_of_memory("print_rsync_version");
 573 #endif
 574 #ifdef HAVE_SOCKETPAIR
 575         got_socketpair = "";
 576 #endif
 577 #ifdef HAVE_FTRUNCATE
 578         have_inplace = "";
 579 #endif
 580 #ifdef SUPPORT_HARD_LINKS
 581         hardlinks = "";
 582 #endif
 583 #ifdef SUPPORT_ACLS
 584         acls = "";
 585 #endif
 586 #ifdef SUPPORT_XATTRS
 587         xattrs = "";
 588 #endif
 589 #ifdef SUPPORT_LINKS
 590         links = "";
 591 #endif
 592 #ifdef INET6
 593         ipv6 = "";
 594 #endif
 595 #ifdef ICONV_OPTION
 596         iconv = "";
 597 #endif
 598 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
 599         symtimes = "";
 600 #endif
 601
 602         rprintf(f, "%s  version %s  protocol version %d%s\n",
 603                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 604         rprintf(f, "Copyright (C) 1996-2009 by Andrew Tridgell, Wayne Davison, and others.\n");
 605         rprintf(f, "Web site: http://rsync.samba.org/\n");
 606         rprintf(f, "Capabilities:\n");
 607         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 608                 (int)(sizeof (OFF_T) * 8),
 609                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 610                 (int)(sizeof (time_t) * 8),
 611                 (int)(sizeof (int64) * 8));
 612         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 613                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 614         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
 615                 have_inplace, acls, xattrs, iconv, symtimes);
 616
 617 #ifdef MAINTAINER_MODE
 618         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 619 #endif
 620
 621 #if SIZEOF_INT64 < 8
 622         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 623 #endif
 624         if (sizeof (int64) != SIZEOF_INT64) {
 625                 rprintf(f,
 626                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 627                         (int) SIZEOF_INT64, (int) sizeof (int64));
 628         }
 629
 630         rprintf(f,"\n");
 631         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 632         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 633         rprintf(f,"General Public Licence for details.\n");
 634 }
 635
 636
 637 void usage(enum logcode F)
 638 {
 639   print_rsync_version(F);
 640
 641   rprintf(F,"\n");
 642   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 643   rprintf(F,"via a fast differencing algorithm.\n");
 644
 645   rprintf(F,"\n");
 646   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 647   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 648   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 649   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 650   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 651   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 652   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 653   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 654   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 655   rprintf(F,"\n");
 656   rprintf(F,"Options\n");
 657   rprintf(F," -v, --verbose               increase verbosity\n");
 658   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 659   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 660   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 661   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 662   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 663   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 664   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 665   rprintf(F," -r, --recursive             recurse into directories\n");
 666   rprintf(F," -R, --relative              use relative path names\n");
 667   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 668   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 669   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 670   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 671   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 672   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 673   rprintf(F,"     --append                append data onto shorter files\n");
 674   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 675   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 676   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 677   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 678   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 679   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 680   rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
 681   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 682   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 683   rprintf(F," -H, --hard-links            preserve hard links\n");
 684   rprintf(F," -p, --perms                 preserve permissions\n");
 685   rprintf(F," -E, --executability         preserve the file's executability\n");
 686   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 687 #ifdef SUPPORT_ACLS
 688   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 689 #endif
 690 #ifdef SUPPORT_XATTRS
 691   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 692 #endif
 693   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 694   rprintf(F," -g, --group                 preserve group\n");
 695   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 696   rprintf(F,"     --specials              preserve special files\n");
 697   rprintf(F," -D                          same as --devices --specials\n");
 698   rprintf(F," -t, --times                 preserve modification times\n");
 699   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 700   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 701 #ifdef SUPPORT_XATTRS
 702   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 703 #endif
 704   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 705   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 706   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 707   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 708   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 709   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 710   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 711   rprintf(F,"     --existing              skip creating new files on receiver\n");
 712   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 713   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 714   rprintf(F,"     --del                   an alias for --delete-during\n");
 715   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 716   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 717   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
 718   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 719   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 720   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 721   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 722   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 723   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 724   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 725   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 726   rprintf(F,"     --partial               keep partially transferred files\n");
 727   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 728   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 729   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 730   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 731   rprintf(F,"     --usermap=STRING        custom username mapping\n");
 732   rprintf(F,"     --groupmap=STRING       custom groupname mapping\n");
 733   rprintf(F,"     --chown=USER:GROUP      simple username/groupname mapping\n");
 734   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 735   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 736   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 737   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 738   rprintf(F,"     --size-only             skip files that match in size\n");
 739   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 740   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 741   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 742   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 743   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 744   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 745   rprintf(F," -z, --compress              compress file data during the transfer\n");
 746   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 747   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 748   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 749   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 750   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 751   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 752   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 753   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 754   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 755   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 756   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 757   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 758   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 759   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 760   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 761   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 762   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 763   rprintf(F,"     --stats                 give some file-transfer stats\n");
 764   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 765   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 766   rprintf(F,"     --progress              show progress during transfer\n");
 767   rprintf(F," -P                          same as --partial --progress\n");
 768   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 769   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 770   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 771   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 772   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 773   rprintf(F,"     --list-only             list the files instead of copying them\n");
 774   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 775   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 776   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 777   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 778   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 779 #ifdef ICONV_OPTION
 780   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 781 #endif
 782   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 783   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 784   rprintf(F,"     --version               print version number\n");
 785   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 786
 787   rprintf(F,"\n");
 788   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 789   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 790   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 791 }
 792
 793 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 794       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 795       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 796       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 797       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 798       OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN,
 799       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 800
 801 static struct poptOption long_options[] = {
 802   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 803   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 804   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 805   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 806   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 807   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 808   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 809   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 810   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 811   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 812   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 813   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 814   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 815   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 816   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 817   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 818   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 819   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 820   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 821   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 822   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 823   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 824   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 825   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 826   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 827   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 828   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 829   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 830   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 831   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 832   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 833   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 834   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 835   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 836   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 837   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 838   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 839   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 840   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 841   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 842   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
 843   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 844   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 845   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 846   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 847   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 848   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 849   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 850   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 851   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 852   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 853   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 854   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 855   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 856   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 857   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 858   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 859   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 860   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 861   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 862   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 863   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 864   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 865   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 866   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 867   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 868   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 869   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 870   {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
 871   {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
 872   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 873   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 874   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 875   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 876   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 877   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 878   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 879   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 880   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 881   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 882   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 883   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 884   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 885   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 886   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 887   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 888   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
 889   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 890   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 891   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 892   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 893   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 894   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 895   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 896   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
 897   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 898   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 899   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
 900   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
 901   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 902   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 903   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 904   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 905   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 906   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 907   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 908   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 909   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 910   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 911   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 912   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 913   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
 914   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
 915   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
 916   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
 917   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 918   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 919   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 920   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 921   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 922   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 923   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 924   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 925   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 926   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 927   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 928   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 929   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 930   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 931   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 932   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 933   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 934   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 935   {"fuzzy",           'y', POPT_ARG_VAL,    &fuzzy_basis, 1, 0, 0 },
 936   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 937   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 938   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 939   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 940   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 941   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 942   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 943   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 944   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 945   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 946   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 947   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 948   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 949   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 950   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 951   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
 952   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 953   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 954   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 955   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 956   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 957   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 958   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 959   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 960   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 961   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 962   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 963   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 964   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 965   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 966   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 967   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 968   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 969   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 970   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 971   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 972   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 973   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 974   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 975   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 976   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 977   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
 978   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
 979   {"usermap",          0,  POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
 980   {"groupmap",         0,  POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
 981   {"chown",            0,  POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
 982   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 983   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
 984   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
 985   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
 986   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 987   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 988   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 989 #ifdef ICONV_OPTION
 990   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
 991   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
 992 #endif
 993   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 994   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 995   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
 996   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 997   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 998   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
 999   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1000   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1001   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1002   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
1003   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
1004   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
1005   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1006   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1007   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
1008   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
1009   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
1010   /* All the following options switch us into daemon-mode option-parsing. */
1011   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1012   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1013   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1014   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1015   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1016   {0,0,0,0, 0, 0, 0}
1017 };
1018
1019 static void daemon_usage(enum logcode F)
1020 {
1021   print_rsync_version(F);
1022
1023   rprintf(F,"\n");
1024   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1025   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1026   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
1027   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1028   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1029   rprintf(F,"     --no-detach             do not detach from the parent\n");
1030   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1031   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1032   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1033   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1034   rprintf(F," -v, --verbose               increase verbosity\n");
1035   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1036   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1037   rprintf(F,"     --help                  show this help screen\n");
1038
1039   rprintf(F,"\n");
1040   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1041   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1042 }
1043
1044 static struct poptOption long_daemon_options[] = {
1045   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1046   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1047   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1048   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1049   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1050   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1051   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1052   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1053   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1054   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1055   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1056   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1057   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1058   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1059   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1060   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1061   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1062   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1063   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1064   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1065   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1066   {0,0,0,0, 0, 0, 0}
1067 };
1068
1069
1070 static char err_buf[200];
1071
1072
1073 /**
1074  * Store the option error message, if any, so that we can log the
1075  * connection attempt (which requires parsing the options), and then
1076  * show the error later on.
1077  **/
1078 void option_error(void)
1079 {
1080         if (!err_buf[0]) {
1081                 strlcpy(err_buf, "Error parsing options: option may "
1082                         "be supported on client but not on server?\n",
1083                         sizeof err_buf);
1084         }
1085
1086         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1087         msleep(20);
1088 }
1089
1090
1091 /**
1092  * Tweak the option table to disable all options that the rsyncd.conf
1093  * file has told us to refuse.
1094  **/
1095 static void set_refuse_options(char *bp)
1096 {
1097         struct poptOption *op;
1098         char *cp, shortname[2];
1099         int is_wild, found_match;
1100
1101         shortname[1] = '\0';
1102
1103         while (1) {
1104                 while (*bp == ' ') bp++;
1105                 if (!*bp)
1106                         break;
1107                 if ((cp = strchr(bp, ' ')) != NULL)
1108                         *cp= '\0';
1109                 is_wild = strpbrk(bp, "*?[") != NULL;
1110                 found_match = 0;
1111                 for (op = long_options; ; op++) {
1112                         *shortname = op->shortName;
1113                         if (!op->longName && !*shortname)
1114                                 break;
1115                         if ((op->longName && wildmatch(bp, op->longName))
1116                             || (*shortname && wildmatch(bp, shortname))) {
1117                                 if (op->argInfo == POPT_ARG_VAL)
1118                                         op->argInfo = POPT_ARG_NONE;
1119                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1120                                 found_match = 1;
1121                                 /* These flags are set to let us easily check
1122                                  * an implied option later in the code. */
1123                                 switch (*shortname) {
1124                                 case 'r': case 'd': case 'l': case 'p':
1125                                 case 't': case 'g': case 'o': case 'D':
1126                                         refused_archive_part = op->val;
1127                                         break;
1128                                 case 'z':
1129                                         refused_compress = op->val;
1130                                         break;
1131                                 case '\0':
1132                                         if (wildmatch("delete", op->longName))
1133                                                 refused_delete = op->val;
1134                                         else if (wildmatch("delete-before", op->longName))
1135                                                 refused_delete_before = op->val;
1136                                         else if (wildmatch("delete-during", op->longName))
1137                                                 refused_delete_during = op->val;
1138                                         else if (wildmatch("partial", op->longName))
1139                                                 refused_partial = op->val;
1140                                         else if (wildmatch("progress", op->longName))
1141                                                 refused_progress = op->val;
1142                                         else if (wildmatch("inplace", op->longName))
1143                                                 refused_inplace = op->val;
1144                                         else if (wildmatch("no-iconv", op->longName))
1145                                                 refused_no_iconv = op->val;
1146                                         break;
1147                                 }
1148                                 if (!is_wild)
1149                                         break;
1150                         }
1151                 }
1152                 if (!found_match) {
1153                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
1154                                 bp);
1155                 }
1156                 if (!cp)
1157                         break;
1158                 *cp = ' ';
1159                 bp = cp + 1;
1160         }
1161 }
1162
1163
1164 static int count_args(const char **argv)
1165 {
1166         int i = 0;
1167
1168         if (argv) {
1169                 while (argv[i] != NULL)
1170                         i++;
1171         }
1172
1173         return i;
1174 }
1175
1176
1177 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1178 {
1179         int reps, mult, make_compatible = 0;
1180         const char *arg;
1181         OFF_T size = 1;
1182
1183         for (arg = *size_arg; isDigit(arg); arg++) {}
1184         if (*arg == '.')
1185                 for (arg++; isDigit(arg); arg++) {}
1186         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1187         case 'b': case 'B':
1188                 reps = 0;
1189                 break;
1190         case 'k': case 'K':
1191                 reps = 1;
1192                 break;
1193         case 'm': case 'M':
1194                 reps = 2;
1195                 break;
1196         case 'g': case 'G':
1197                 reps = 3;
1198                 break;
1199         default:
1200                 return -1;
1201         }
1202         if (*arg == 'b' || *arg == 'B')
1203                 mult = 1000, make_compatible = 1, arg++;
1204         else if (!*arg || *arg == '+' || *arg == '-')
1205                 mult = 1024;
1206         else if (strncasecmp(arg, "ib", 2) == 0)
1207                 mult = 1024, arg += 2;
1208         else
1209                 return -1;
1210         while (reps--)
1211                 size *= mult;
1212         size *= atof(*size_arg);
1213         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1214                 size += atoi(arg), make_compatible = 1, arg += 2;
1215         if (*arg)
1216                 return -1;
1217         if (size > 0 && make_compatible) {
1218                 /* We convert this manually because we may need %lld precision,
1219                  * and that's not a portable sprintf() escape. */
1220                 char buf[128], *s = buf + sizeof buf - 1;
1221                 OFF_T num = size;
1222                 *s = '\0';
1223                 while (num) {
1224                         *--s = (char)(num % 10) + '0';
1225                         num /= 10;
1226                 }
1227                 if (!(*size_arg = strdup(s)))
1228                         out_of_memory("parse_size_arg");
1229         }
1230         return size;
1231 }
1232
1233
1234 static void create_refuse_error(int which)
1235 {
1236         /* The "which" value is the index + OPT_REFUSED_BASE. */
1237         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1238         int n = snprintf(err_buf, sizeof err_buf,
1239                          "The server is configured to refuse --%s\n",
1240                          op->longName) - 1;
1241         if (op->shortName) {
1242                 snprintf(err_buf + n, sizeof err_buf - n,
1243                          " (-%c)\n", op->shortName);
1244         }
1245 }
1246
1247
1248 /**
1249  * Process command line arguments.  Called on both local and remote.
1250  *
1251  * @retval 1 if all options are OK; with globals set to appropriate
1252  * values
1253  *
1254  * @retval 0 on error, with err_buf containing an explanation
1255  **/
1256 int parse_arguments(int *argc_p, const char ***argv_p)
1257 {
1258         static poptContext pc;
1259         char *ref = lp_refuse_options(module_id);
1260         const char *arg, **argv = *argv_p;
1261         int argc = *argc_p;
1262         int opt;
1263
1264         if (ref && *ref)
1265                 set_refuse_options(ref);
1266         if (am_daemon) {
1267                 set_refuse_options("log-file*");
1268 #ifdef ICONV_OPTION
1269                 if (!*lp_charset(module_id))
1270                         set_refuse_options("iconv");
1271 #endif
1272         }
1273
1274 #ifdef ICONV_OPTION
1275         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1276                 iconv_opt = strdup(arg);
1277 #endif
1278
1279         /* TODO: Call poptReadDefaultConfig; handle errors. */
1280
1281         /* The context leaks in case of an error, but if there's a
1282          * problem we always exit anyhow. */
1283         if (pc)
1284                 poptFreeContext(pc);
1285         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1286         if (!am_server)
1287                 poptReadDefaultConfig(pc, 0);
1288
1289         while ((opt = poptGetNextOpt(pc)) != -1) {
1290                 /* most options are handled automatically by popt;
1291                  * only special cases are returned and listed here. */
1292
1293                 switch (opt) {
1294                 case OPT_VERSION:
1295                         print_rsync_version(FINFO);
1296                         exit_cleanup(0);
1297
1298                 case OPT_SERVER:
1299                         if (!am_server) {
1300                                 /* Disable popt aliases on the server side and
1301                                  * then start parsing the options again. */
1302                                 poptFreeContext(pc);
1303                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1304                                                     long_options, 0);
1305                                 am_server = 1;
1306                         }
1307 #ifdef ICONV_OPTION
1308                         iconv_opt = NULL;
1309 #endif
1310                         break;
1311
1312                 case OPT_SENDER:
1313                         if (!am_server) {
1314                                 usage(FERROR);
1315                                 exit_cleanup(RERR_SYNTAX);
1316                         }
1317                         am_sender = 1;
1318                         break;
1319
1320                 case OPT_DAEMON:
1321                         if (am_daemon) {
1322                                 strlcpy(err_buf,
1323                                         "Attempt to hack rsync thwarted!\n",
1324                                         sizeof err_buf);
1325                                 return 0;
1326                         }
1327 #ifdef ICONV_OPTION
1328                         iconv_opt = NULL;
1329 #endif
1330                         poptFreeContext(pc);
1331                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1332                                             long_daemon_options, 0);
1333                         while ((opt = poptGetNextOpt(pc)) != -1) {
1334                                 char **cpp;
1335                                 switch (opt) {
1336                                 case 'h':
1337                                         daemon_usage(FINFO);
1338                                         exit_cleanup(0);
1339
1340                                 case 'M':
1341                                         arg = poptGetOptArg(pc);
1342                                         if (!strchr(arg, '=')) {
1343                                                 rprintf(FERROR,
1344                                                     "--dparam value is missing an '=': %s\n",
1345                                                     arg);
1346                                                 goto daemon_error;
1347                                         }
1348                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1349                                         *cpp = strdup(arg);
1350                                         break;
1351
1352                                 case 'v':
1353                                         verbose++;
1354                                         break;
1355
1356                                 default:
1357                                         rprintf(FERROR,
1358                                             "rsync: %s: %s (in daemon mode)\n",
1359                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1360                                             poptStrerror(opt));
1361                                         goto daemon_error;
1362                                 }
1363                         }
1364
1365                         if (dparam_list.count && !set_dparams(1))
1366                                 exit_cleanup(RERR_SYNTAX);
1367
1368                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1369                                 snprintf(err_buf, sizeof err_buf,
1370                                          "the --temp-dir path is WAY too long.\n");
1371                                 return 0;
1372                         }
1373
1374                         if (!daemon_opt) {
1375                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1376                             daemon_error:
1377                                 rprintf(FERROR,
1378                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1379                                 exit_cleanup(RERR_SYNTAX);
1380                         }
1381
1382                         *argv_p = argv = poptGetArgs(pc);
1383                         *argc_p = argc = count_args(argv);
1384                         am_starting_up = 0;
1385                         daemon_opt = 0;
1386                         am_daemon = 1;
1387                         return 1;
1388
1389                 case OPT_MODIFY_WINDOW:
1390                         /* The value has already been set by popt, but
1391                          * we need to remember that we're using a
1392                          * non-default setting. */
1393                         modify_window_set = 1;
1394                         break;
1395
1396                 case OPT_FILTER:
1397                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1398                         break;
1399
1400                 case OPT_EXCLUDE:
1401                         parse_rule(&filter_list, poptGetOptArg(pc),
1402                                    0, XFLG_OLD_PREFIXES);
1403                         break;
1404
1405                 case OPT_INCLUDE:
1406                         parse_rule(&filter_list, poptGetOptArg(pc),
1407                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1408                         break;
1409
1410                 case OPT_EXCLUDE_FROM:
1411                 case OPT_INCLUDE_FROM:
1412                         arg = poptGetOptArg(pc);
1413                         if (sanitize_paths)
1414                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1415                         if (daemon_filter_list.head) {
1416                                 int rej;
1417                                 char *dir, *cp = strdup(arg);
1418                                 if (!cp)
1419                                         out_of_memory("parse_arguments");
1420                                 if (!*cp)
1421                                         goto options_rejected;
1422                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1423                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1424                                 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1425                                 free(cp);
1426                                 if (rej)
1427                                         goto options_rejected;
1428                         }
1429                         parse_filter_file(&filter_list, arg,
1430                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1431                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1432                         break;
1433
1434                 case 'a':
1435                         if (refused_archive_part) {
1436                                 create_refuse_error(refused_archive_part);
1437                                 return 0;
1438                         }
1439                         if (!recurse) /* preserve recurse == 2 */
1440                                 recurse = 1;
1441 #ifdef SUPPORT_LINKS
1442                         preserve_links = 1;
1443 #endif
1444                         preserve_perms = 1;
1445                         preserve_times = 2;
1446                         preserve_gid = 1;
1447                         preserve_uid = 1;
1448                         preserve_devices = 1;
1449                         preserve_specials = 1;
1450                         break;
1451
1452                 case 'D':
1453                         preserve_devices = preserve_specials = 1;
1454                         break;
1455
1456                 case OPT_NO_D:
1457                         preserve_devices = preserve_specials = 0;
1458                         break;
1459
1460                 case 'h':
1461                         human_readable++;
1462                         break;
1463
1464                 case 'H':
1465                         preserve_hard_links++;
1466                         break;
1467
1468                 case 'i':
1469                         itemize_changes++;
1470                         break;
1471
1472                 case 'v':
1473                         verbose++;
1474                         break;
1475
1476                 case 'q':
1477                         quiet++;
1478                         break;
1479
1480                 case 'x':
1481                         one_file_system++;
1482                         break;
1483
1484                 case 'F':
1485                         switch (++F_option_cnt) {
1486                         case 1:
1487                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1488                                 break;
1489                         case 2:
1490                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1491                                 break;
1492                         }
1493                         break;
1494
1495                 case 'P':
1496                         if (refused_partial || refused_progress) {
1497                                 create_refuse_error(refused_partial
1498                                     ? refused_partial : refused_progress);
1499                                 return 0;
1500                         }
1501                         do_progress = 1;
1502                         keep_partial = 1;
1503                         break;
1504
1505                 case 'z':
1506                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1507                          || def_compress_level > Z_BEST_COMPRESSION) {
1508                                 snprintf(err_buf, sizeof err_buf,
1509                                         "--compress-level value is invalid: %d\n",
1510                                         def_compress_level);
1511                                 return 0;
1512                         }
1513                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1514                         if (do_compression && refused_compress) {
1515                                 create_refuse_error(refused_compress);
1516                                 return 0;
1517                         }
1518                         break;
1519
1520                 case 'M':
1521                         arg = poptGetOptArg(pc);
1522                         if (*arg != '-') {
1523                                 snprintf(err_buf, sizeof err_buf,
1524                                         "Remote option must start with a dash: %s\n", arg);
1525                                 return 0;
1526                         }
1527                         if (remote_option_cnt+2 >= remote_option_alloc) {
1528                                 remote_option_alloc += 16;
1529                                 remote_options = realloc_array(remote_options,
1530                                                         const char *, remote_option_alloc);
1531                                 if (!remote_options)
1532                                         out_of_memory("parse_arguments");
1533                                 if (!remote_option_cnt)
1534                                         remote_options[0] = "ARG0";
1535                         }
1536                         remote_options[++remote_option_cnt] = arg;
1537                         remote_options[remote_option_cnt+1] = NULL;
1538                         break;
1539
1540                 case OPT_WRITE_BATCH:
1541                         /* batch_name is already set */
1542                         write_batch = 1;
1543                         break;
1544
1545                 case OPT_ONLY_WRITE_BATCH:
1546                         /* batch_name is already set */
1547                         write_batch = -1;
1548                         break;
1549
1550                 case OPT_READ_BATCH:
1551                         /* batch_name is already set */
1552                         read_batch = 1;
1553                         break;
1554
1555                 case OPT_NO_ICONV:
1556 #ifdef ICONV_OPTION
1557                         iconv_opt = NULL;
1558 #endif
1559                         break;
1560
1561                 case OPT_MAX_SIZE:
1562                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1563                                 snprintf(err_buf, sizeof err_buf,
1564                                         "--max-size value is invalid: %s\n",
1565                                         max_size_arg);
1566                                 return 0;
1567                         }
1568                         break;
1569
1570                 case OPT_MIN_SIZE:
1571                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1572                                 snprintf(err_buf, sizeof err_buf,
1573                                         "--min-size value is invalid: %s\n",
1574                                         min_size_arg);
1575                                 return 0;
1576                         }
1577                         break;
1578
1579                 case OPT_APPEND:
1580                         if (am_server)
1581                                 append_mode++;
1582                         else
1583                                 append_mode = 1;
1584                         break;
1585
1586                 case OPT_LINK_DEST:
1587 #ifdef SUPPORT_HARD_LINKS
1588                         link_dest = 1;
1589                         dest_option = "--link-dest";
1590                         goto set_dest_dir;
1591 #else
1592                         snprintf(err_buf, sizeof err_buf,
1593                                  "hard links are not supported on this %s\n",
1594                                  am_server ? "server" : "client");
1595                         return 0;
1596 #endif
1597
1598                 case OPT_COPY_DEST:
1599                         copy_dest = 1;
1600                         dest_option = "--copy-dest";
1601                         goto set_dest_dir;
1602
1603                 case OPT_COMPARE_DEST:
1604                         compare_dest = 1;
1605                         dest_option = "--compare-dest";
1606                 set_dest_dir:
1607                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1608                                 snprintf(err_buf, sizeof err_buf,
1609                                         "ERROR: at most %d %s args may be specified\n",
1610                                         MAX_BASIS_DIRS, dest_option);
1611                                 return 0;
1612                         }
1613                         /* We defer sanitizing this arg until we know what
1614                          * our destination directory is going to be. */
1615                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1616                         break;
1617
1618                 case OPT_CHMOD:
1619                         arg = poptGetOptArg(pc);
1620                         if (!parse_chmod(arg, &chmod_modes)) {
1621                                 snprintf(err_buf, sizeof err_buf,
1622                                     "Invalid argument passed to --chmod (%s)\n",
1623                                     arg);
1624                                 return 0;
1625                         }
1626                         break;
1627
1628                 case OPT_INFO:
1629                         arg = poptGetOptArg(pc);
1630                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1631                         break;
1632
1633                 case OPT_DEBUG:
1634                         arg = poptGetOptArg(pc);
1635                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1636                         break;
1637
1638                 case OPT_USERMAP:
1639                         if (usermap) {
1640                                 if (usermap_via_chown) {
1641                                         snprintf(err_buf, sizeof err_buf,
1642                                             "--usermap conflicts with prior --chown.\n");
1643                                         return 0;
1644                                 }
1645                                 snprintf(err_buf, sizeof err_buf,
1646                                     "You can only specify --usermap once.\n");
1647                                 return 0;
1648                         }
1649                         usermap = (char *)poptGetOptArg(pc);
1650                         usermap_via_chown = False;
1651                         break;
1652
1653                 case OPT_GROUPMAP:
1654                         if (groupmap) {
1655                                 if (groupmap_via_chown) {
1656                                         snprintf(err_buf, sizeof err_buf,
1657                                             "--groupmap conflicts with prior --chown.\n");
1658                                         return 0;
1659                                 }
1660                                 snprintf(err_buf, sizeof err_buf,
1661                                     "You can only specify --groupmap once.\n");
1662                                 return 0;
1663                         }
1664                         groupmap = (char *)poptGetOptArg(pc);
1665                         groupmap_via_chown = False;
1666                         break;
1667
1668                 case OPT_CHOWN: {
1669                         const char *chown = poptGetOptArg(pc);
1670                         int len;
1671                         if ((arg = strchr(chown, ':')) != NULL)
1672                                 len = arg++ - chown;
1673                         else
1674                                 len = strlen(chown);
1675                         if (len) {
1676                                 if (usermap) {
1677                                         if (!usermap_via_chown) {
1678                                                 snprintf(err_buf, sizeof err_buf,
1679                                                     "--chown conflicts with prior --usermap.\n");
1680                                                 return 0;
1681                                         }
1682                                         snprintf(err_buf, sizeof err_buf,
1683                                             "You can only specify a user-affecting --chown once.\n");
1684                                         return 0;
1685                                 }
1686                                 if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
1687                                         out_of_memory("parse_arguments");
1688                                 usermap_via_chown = True;
1689                         }
1690                         if (arg && *arg) {
1691                                 if (groupmap) {
1692                                         if (!groupmap_via_chown) {
1693                                                 snprintf(err_buf, sizeof err_buf,
1694                                                     "--chown conflicts with prior --groupmap.\n");
1695                                                 return 0;
1696                                         }
1697                                         snprintf(err_buf, sizeof err_buf,
1698                                             "You can only specify a group-affecting --chown once.\n");
1699                                         return 0;
1700                                 }
1701                                 if (asprintf(&groupmap, "*:%s", arg) < 0)
1702                                         out_of_memory("parse_arguments");
1703                                 groupmap_via_chown = True;
1704                         }
1705                         break;
1706                 }
1707
1708                 case OPT_HELP:
1709                         usage(FINFO);
1710                         exit_cleanup(0);
1711
1712                 case 'A':
1713 #ifdef SUPPORT_ACLS
1714                         preserve_acls = 1;
1715                         preserve_perms = 1;
1716                         break;
1717 #else
1718                         /* FIXME: this should probably be ignored with a
1719                          * warning and then countermeasures taken to
1720                          * restrict group and other access in the presence
1721                          * of any more restrictive ACLs, but this is safe
1722                          * for now */
1723                         snprintf(err_buf,sizeof(err_buf),
1724                                  "ACLs are not supported on this %s\n",
1725                                  am_server ? "server" : "client");
1726                         return 0;
1727 #endif
1728
1729                 case 'X':
1730 #ifdef SUPPORT_XATTRS
1731                         preserve_xattrs++;
1732                         break;
1733 #else
1734                         snprintf(err_buf,sizeof(err_buf),
1735                                  "extended attributes are not supported on this %s\n",
1736                                  am_server ? "server" : "client");
1737                         return 0;
1738 #endif
1739
1740                 default:
1741                         /* A large opt value means that set_refuse_options()
1742                          * turned this option off. */
1743                         if (opt >= OPT_REFUSED_BASE) {
1744                                 create_refuse_error(opt);
1745                                 return 0;
1746                         }
1747                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1748                                  am_server ? "on remote machine: " : "",
1749                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1750                                  poptStrerror(opt));
1751                         return 0;
1752                 }
1753         }
1754
1755         if (human_readable > 1 && argc == 2 && !am_server) {
1756                 /* Allow the old meaning of 'h' (--help) on its own. */
1757                 usage(FINFO);
1758                 exit_cleanup(0);
1759         }
1760
1761         set_output_verbosity(verbose, DEFAULT_PRIORITY);
1762
1763         if (do_stats) {
1764                 parse_output_words(info_words, info_levels,
1765                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1766         }
1767
1768         if (human_readable) {
1769                 char buf[32];
1770                 snprintf(buf, sizeof buf, "%f", 3.14);
1771                 if (strchr(buf, '.') != NULL)
1772                         number_separator = ',';
1773                 else
1774                         number_separator = '.';
1775         }
1776
1777 #ifdef ICONV_OPTION
1778         if (iconv_opt && protect_args != 2) {
1779                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1780                         iconv_opt = NULL;
1781                 else
1782                         need_unsorted_flist = 1;
1783         }
1784         if (refused_no_iconv && !iconv_opt) {
1785                 create_refuse_error(refused_no_iconv);
1786                 return 0;
1787         }
1788 #endif
1789
1790         if (protect_args == 1 && am_server)
1791                 return 1;
1792
1793         *argv_p = argv = poptGetArgs(pc);
1794         *argc_p = argc = count_args(argv);
1795
1796 #ifndef SUPPORT_LINKS
1797         if (preserve_links && !am_sender) {
1798                 snprintf(err_buf, sizeof err_buf,
1799                          "symlinks are not supported on this %s\n",
1800                          am_server ? "server" : "client");
1801                 return 0;
1802         }
1803 #endif
1804
1805 #ifndef SUPPORT_HARD_LINKS
1806         if (preserve_hard_links) {
1807                 snprintf(err_buf, sizeof err_buf,
1808                          "hard links are not supported on this %s\n",
1809                          am_server ? "server" : "client");
1810                 return 0;
1811         }
1812 #endif
1813
1814 #ifdef SUPPORT_XATTRS
1815         if (am_root < 0 && preserve_xattrs > 1) {
1816                 snprintf(err_buf, sizeof err_buf,
1817                          "--fake-super conflicts with -XX\n");
1818                 return 0;
1819         }
1820 #else
1821         if (am_root < 0) {
1822                 snprintf(err_buf, sizeof err_buf,
1823                          "--fake-super requires an rsync with extended attributes enabled\n");
1824                 return 0;
1825         }
1826 #endif
1827
1828         if (write_batch && read_batch) {
1829                 snprintf(err_buf, sizeof err_buf,
1830                         "--write-batch and --read-batch can not be used together\n");
1831                 return 0;
1832         }
1833         if (write_batch > 0 || read_batch) {
1834                 if (am_server) {
1835                         rprintf(FINFO,
1836                                 "ignoring --%s-batch option sent to server\n",
1837                                 write_batch ? "write" : "read");
1838                         /* We don't actually exit_cleanup(), so that we can
1839                          * still service older version clients that still send
1840                          * batch args to server. */
1841                         read_batch = write_batch = 0;
1842                         batch_name = NULL;
1843                 } else if (dry_run)
1844                         write_batch = 0;
1845         } else if (write_batch < 0 && dry_run)
1846                 write_batch = 0;
1847         if (read_batch && files_from) {
1848                 snprintf(err_buf, sizeof err_buf,
1849                         "--read-batch cannot be used with --files-from\n");
1850                 return 0;
1851         }
1852         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1853                 snprintf(err_buf, sizeof err_buf,
1854                         "the batch-file name must be %d characters or less.\n",
1855                         MAX_BATCH_NAME_LEN);
1856                 return 0;
1857         }
1858
1859         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1860                 snprintf(err_buf, sizeof err_buf,
1861                          "the --temp-dir path is WAY too long.\n");
1862                 return 0;
1863         }
1864
1865         if (max_delete < 0 && max_delete != INT_MIN) {
1866                 /* Negative numbers are treated as "no deletions". */
1867                 max_delete = 0;
1868         }
1869
1870         if (compare_dest + copy_dest + link_dest > 1) {
1871                 snprintf(err_buf, sizeof err_buf,
1872                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1873                 return 0;
1874         }
1875
1876         if (files_from) {
1877                 if (recurse == 1) /* preserve recurse == 2 */
1878                         recurse = 0;
1879                 if (xfer_dirs < 0)
1880                         xfer_dirs = 1;
1881         }
1882
1883         if (argc < 2 && !read_batch && !am_server)
1884                 list_only |= 1;
1885
1886         if (xfer_dirs >= 4) {
1887                 parse_rule(&filter_list, "- /*/*", 0, 0);
1888                 recurse = xfer_dirs = 1;
1889         } else if (recurse)
1890                 xfer_dirs = 1;
1891         else if (xfer_dirs < 0)
1892                 xfer_dirs = list_only ? 1 : 0;
1893
1894         if (relative_paths < 0)
1895                 relative_paths = files_from? 1 : 0;
1896         if (!relative_paths)
1897                 implied_dirs = 0;
1898
1899         if (delete_before + !!delete_during + delete_after > 1) {
1900                 snprintf(err_buf, sizeof err_buf,
1901                         "You may not combine multiple --delete-WHEN options.\n");
1902                 return 0;
1903         }
1904         if (delete_before || delete_during || delete_after)
1905                 delete_mode = 1;
1906         else if (delete_mode || delete_excluded) {
1907                 /* Only choose now between before & during if one is refused. */
1908                 if (refused_delete_before) {
1909                         if (!refused_delete_during)
1910                                 delete_during = 1;
1911                         else {
1912                                 create_refuse_error(refused_delete_before);
1913                                 return 0;
1914                         }
1915                 } else if (refused_delete_during)
1916                         delete_before = 1;
1917                 delete_mode = 1;
1918         }
1919         if (!xfer_dirs && delete_mode) {
1920                 snprintf(err_buf, sizeof err_buf,
1921                         "--delete does not work without -r or -d.\n");
1922                 return 0;
1923         }
1924
1925         if (delete_mode && refused_delete) {
1926                 create_refuse_error(refused_delete);
1927                 return 0;
1928         }
1929
1930         if (remove_source_files) {
1931                 /* We only want to infer this refusal of --remove-source-files
1932                  * via the refusal of "delete", not any of the "delete-FOO"
1933                  * options. */
1934                 if (refused_delete && am_sender) {
1935                         create_refuse_error(refused_delete);
1936                         return 0;
1937                 }
1938                 need_messages_from_generator = 1;
1939         }
1940
1941         if (munge_symlinks && !am_daemon) {
1942                 STRUCT_STAT st;
1943                 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
1944                 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
1945                 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
1946                         rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
1947                                 prefix);
1948                         exit_cleanup(RERR_UNSUPPORTED);
1949                 }
1950         }
1951
1952         if (sanitize_paths) {
1953                 int i;
1954                 for (i = argc; i-- > 0; )
1955                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
1956                 if (tmpdir)
1957                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
1958                 if (backup_dir)
1959                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
1960         }
1961         if (daemon_filter_list.head && !am_sender) {
1962                 struct filter_list_struct *elp = &daemon_filter_list;
1963                 if (tmpdir) {
1964                         char *dir;
1965                         if (!*tmpdir)
1966                                 goto options_rejected;
1967                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1968                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1969                         if (check_filter(elp, FLOG, dir, 1) < 0)
1970                                 goto options_rejected;
1971                 }
1972                 if (backup_dir) {
1973                         char *dir;
1974                         if (!*backup_dir)
1975                                 goto options_rejected;
1976                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1977                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1978                         if (check_filter(elp, FLOG, dir, 1) < 0)
1979                                 goto options_rejected;
1980                 }
1981         }
1982
1983         if (!backup_suffix)
1984                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1985         backup_suffix_len = strlen(backup_suffix);
1986         if (strchr(backup_suffix, '/') != NULL) {
1987                 snprintf(err_buf, sizeof err_buf,
1988                         "--suffix cannot contain slashes: %s\n",
1989                         backup_suffix);
1990                 return 0;
1991         }
1992         if (backup_dir) {
1993                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1994                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1995                 if (backup_dir_remainder < 32) {
1996                         snprintf(err_buf, sizeof err_buf,
1997                                 "the --backup-dir path is WAY too long.\n");
1998                         return 0;
1999                 }
2000                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
2001                         backup_dir_buf[backup_dir_len++] = '/';
2002                         backup_dir_buf[backup_dir_len] = '\0';
2003                 }
2004                 if (INFO_GTE(BACKUP, 1) && !am_sender)
2005                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
2006         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
2007                 snprintf(err_buf, sizeof err_buf,
2008                         "--suffix cannot be a null string without --backup-dir\n");
2009                 return 0;
2010         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
2011                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
2012                         "P *%s", backup_suffix);
2013                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
2014         }
2015
2016         if (make_backups && !backup_dir) {
2017                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
2018                 if (preserve_times > 1)
2019                         preserve_times = 1;
2020         } else if (omit_dir_times) {
2021                 if (preserve_times > 1)
2022                         preserve_times = 1;
2023         }
2024
2025         if (stdout_format) {
2026                 if (am_server && log_format_has(stdout_format, 'I'))
2027                         stdout_format_has_i = 2;
2028                 else if (log_format_has(stdout_format, 'i'))
2029                         stdout_format_has_i = itemize_changes | 1;
2030                 if (!log_format_has(stdout_format, 'b')
2031                  && !log_format_has(stdout_format, 'c')
2032                  && !log_format_has(stdout_format, 'C'))
2033                         log_before_transfer = !am_server;
2034         } else if (itemize_changes) {
2035                 stdout_format = "%i %n%L";
2036                 stdout_format_has_i = itemize_changes;
2037                 log_before_transfer = !am_server;
2038         }
2039
2040         if (do_progress && !am_server) {
2041                 if (!log_before_transfer && INFO_EQ(NAME, 0))
2042                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
2043                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
2044         }
2045
2046         if (dry_run)
2047                 do_xfers = 0;
2048
2049         set_io_timeout(io_timeout);
2050
2051         if (INFO_GTE(NAME, 1) && !stdout_format) {
2052                 stdout_format = "%n%L";
2053                 log_before_transfer = !am_server;
2054         }
2055         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
2056                 stdout_format_has_o_or_i = 1;
2057
2058         if (logfile_name && !am_daemon) {
2059                 if (!logfile_format) {
2060                         logfile_format = "%i %n%L";
2061                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
2062                 } else {
2063                         if (log_format_has(logfile_format, 'i'))
2064                                 logfile_format_has_i = 1;
2065                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
2066                                 logfile_format_has_o_or_i = 1;
2067                 }
2068                 log_init(0);
2069         } else if (!am_daemon)
2070                 logfile_format = NULL;
2071
2072         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
2073                 bwlimit = daemon_bwlimit;
2074         if (bwlimit) {
2075                 bwlimit_writemax = (size_t)bwlimit * 128;
2076                 if (bwlimit_writemax < 512)
2077                         bwlimit_writemax = 512;
2078         }
2079
2080         if (sparse_files && inplace) {
2081                 /* Note: we don't check for this below, because --append is
2082                  * OK with --sparse (as long as redos are handled right). */
2083                 snprintf(err_buf, sizeof err_buf,
2084                          "--sparse cannot be used with --inplace\n");
2085                 return 0;
2086         }
2087
2088         if (append_mode) {
2089                 if (whole_file > 0) {
2090                         snprintf(err_buf, sizeof err_buf,
2091                                  "--append cannot be used with --whole-file\n");
2092                         return 0;
2093                 }
2094                 if (refused_inplace) {
2095                         create_refuse_error(refused_inplace);
2096                         return 0;
2097                 }
2098                 inplace = 1;
2099         }
2100
2101         if (delay_updates && !partial_dir)
2102                 partial_dir = tmp_partialdir;
2103
2104         if (inplace) {
2105 #ifdef HAVE_FTRUNCATE
2106                 if (partial_dir) {
2107                         snprintf(err_buf, sizeof err_buf,
2108                                  "--%s cannot be used with --%s\n",
2109                                  append_mode ? "append" : "inplace",
2110                                  delay_updates ? "delay-updates" : "partial-dir");
2111                         return 0;
2112                 }
2113                 /* --inplace implies --partial for refusal purposes, but we
2114                  * clear the keep_partial flag for internal logic purposes. */
2115                 if (refused_partial) {
2116                         create_refuse_error(refused_partial);
2117                         return 0;
2118                 }
2119                 keep_partial = 0;
2120 #else
2121                 snprintf(err_buf, sizeof err_buf,
2122                          "--%s is not supported on this %s\n",
2123                          append_mode ? "append" : "inplace",
2124                          am_server ? "server" : "client");
2125                 return 0;
2126 #endif
2127         } else {
2128                 if (keep_partial && !partial_dir && !am_server) {
2129                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2130                                 partial_dir = strdup(arg);
2131                 }
2132                 if (partial_dir) {
2133                         if (*partial_dir)
2134                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2135                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2136                                 partial_dir = NULL;
2137                         if (!partial_dir && refused_partial) {
2138                                 create_refuse_error(refused_partial);
2139                                 return 0;
2140                         }
2141                         keep_partial = 1;
2142                 }
2143         }
2144
2145         if (files_from) {
2146                 char *h, *p;
2147                 int q;
2148                 if (argc > 2 || (!am_daemon && argc == 1)) {
2149                         usage(FERROR);
2150                         exit_cleanup(RERR_SYNTAX);
2151                 }
2152                 if (strcmp(files_from, "-") == 0) {
2153                         filesfrom_fd = 0;
2154                         if (am_server)
2155                                 filesfrom_host = ""; /* reading from socket */
2156                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2157                         if (am_server) {
2158                                 snprintf(err_buf, sizeof err_buf,
2159                                         "The --files-from sent to the server cannot specify a host.\n");
2160                                 return 0;
2161                         }
2162                         files_from = p;
2163                         filesfrom_host = h;
2164                         if (strcmp(files_from, "-") == 0) {
2165                                 snprintf(err_buf, sizeof err_buf,
2166                                         "Invalid --files-from remote filename\n");
2167                                 return 0;
2168                         }
2169                 } else {
2170                         if (sanitize_paths)
2171                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2172                         if (daemon_filter_list.head) {
2173                                 char *dir;
2174                                 if (!*files_from)
2175                                         goto options_rejected;
2176                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2177                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2178                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2179                                         goto options_rejected;
2180                         }
2181                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2182                         if (filesfrom_fd < 0) {
2183                                 snprintf(err_buf, sizeof err_buf,
2184                                         "failed to open files-from file %s: %s\n",
2185                                         files_from, strerror(errno));
2186                                 return 0;
2187                         }
2188                 }
2189         }
2190
2191         am_starting_up = 0;
2192
2193         return 1;
2194
2195   options_rejected:
2196         snprintf(err_buf, sizeof err_buf,
2197                 "Your options have been rejected by the server.\n");
2198         return 0;
2199 }
2200
2201
2202 /**
2203  * Construct a filtered list of options to pass through from the
2204  * client to the server.
2205  *
2206  * This involves setting options that will tell the server how to
2207  * behave, and also filtering out options that are processed only
2208  * locally.
2209  **/
2210 void server_options(char **args, int *argc_p)
2211 {
2212         static char argstr[64];
2213         int ac = *argc_p;
2214         uchar where;
2215         char *arg;
2216         int i, x;
2217
2218         /* This should always remain first on the server's command-line. */
2219         args[ac++] = "--server";
2220
2221         if (daemon_over_rsh > 0) {
2222                 args[ac++] = "--daemon";
2223                 *argc_p = ac;
2224                 /* if we're passing --daemon, we're done */
2225                 return;
2226         }
2227
2228         if (!am_sender)
2229                 args[ac++] = "--sender";
2230
2231         x = 1;
2232         argstr[0] = '-';
2233
2234         if (protect_args)
2235                 argstr[x++] = 's';
2236
2237         for (i = 0; i < verbose; i++)
2238                 argstr[x++] = 'v';
2239
2240         /* the -q option is intentionally left out */
2241         if (make_backups)
2242                 argstr[x++] = 'b';
2243         if (update_only)
2244                 argstr[x++] = 'u';
2245         if (!do_xfers) /* Note: NOT "dry_run"! */
2246                 argstr[x++] = 'n';
2247         if (preserve_links)
2248                 argstr[x++] = 'l';
2249         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2250          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2251                 argstr[x++] = 'd';
2252         if (am_sender) {
2253                 if (keep_dirlinks)
2254                         argstr[x++] = 'K';
2255                 if (prune_empty_dirs)
2256                         argstr[x++] = 'm';
2257                 if (omit_dir_times)
2258                         argstr[x++] = 'O';
2259         } else {
2260                 if (copy_links)
2261                         argstr[x++] = 'L';
2262                 if (copy_dirlinks)
2263                         argstr[x++] = 'k';
2264         }
2265
2266         if (whole_file > 0)
2267                 argstr[x++] = 'W';
2268         /* We don't need to send --no-whole-file, because it's the
2269          * default for remote transfers, and in any case old versions
2270          * of rsync will not understand it. */
2271
2272         if (preserve_hard_links) {
2273                 argstr[x++] = 'H';
2274                 if (preserve_hard_links > 1)
2275                         argstr[x++] = 'H';
2276         }
2277         if (preserve_uid)
2278                 argstr[x++] = 'o';
2279         if (preserve_gid)
2280                 argstr[x++] = 'g';
2281         if (preserve_devices) /* ignore preserve_specials here */
2282                 argstr[x++] = 'D';
2283         if (preserve_times)
2284                 argstr[x++] = 't';
2285         if (preserve_perms)
2286                 argstr[x++] = 'p';
2287         else if (preserve_executability && am_sender)
2288                 argstr[x++] = 'E';
2289 #ifdef SUPPORT_ACLS
2290         if (preserve_acls)
2291                 argstr[x++] = 'A';
2292 #endif
2293 #ifdef SUPPORT_XATTRS
2294         if (preserve_xattrs) {
2295                 argstr[x++] = 'X';
2296                 if (preserve_xattrs > 1)
2297                         argstr[x++] = 'X';
2298         }
2299 #endif
2300         if (recurse)
2301                 argstr[x++] = 'r';
2302         if (always_checksum)
2303                 argstr[x++] = 'c';
2304         if (cvs_exclude)
2305                 argstr[x++] = 'C';
2306         if (ignore_times)
2307                 argstr[x++] = 'I';
2308         if (relative_paths)
2309                 argstr[x++] = 'R';
2310         if (one_file_system) {
2311                 argstr[x++] = 'x';
2312                 if (one_file_system > 1)
2313                         argstr[x++] = 'x';
2314         }
2315         if (sparse_files)
2316                 argstr[x++] = 'S';
2317         if (do_compression)
2318                 argstr[x++] = 'z';
2319
2320         set_allow_inc_recurse();
2321
2322         /* Checking the pre-negotiated value allows --protocol=29 override. */
2323         if (protocol_version >= 30) {
2324                 /* We make use of the -e option to let the server know about
2325                  * any pre-release protocol version && some behavior flags. */
2326                 argstr[x++] = 'e';
2327 #if SUBPROTOCOL_VERSION != 0
2328                 if (protocol_version == PROTOCOL_VERSION) {
2329                         x += snprintf(argstr+x, sizeof argstr - x,
2330                                       "%d.%d",
2331                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2332                 } else
2333 #endif
2334                         argstr[x++] = '.';
2335                 if (allow_inc_recurse)
2336                         argstr[x++] = 'i';
2337 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
2338                 argstr[x++] = 'L';
2339 #endif
2340 #ifdef ICONV_OPTION
2341                 argstr[x++] = 's';
2342 #endif
2343         }
2344
2345         if (x >= (int)sizeof argstr) { /* Not possible... */
2346                 rprintf(FERROR, "argstr overflow in server_options().\n");
2347                 exit_cleanup(RERR_MALLOC);
2348         }
2349
2350         argstr[x] = '\0';
2351
2352         if (x > 1)
2353                 args[ac++] = argstr;
2354
2355 #ifdef ICONV_OPTION
2356         if (iconv_opt) {
2357                 char *set = strchr(iconv_opt, ',');
2358                 if (set)
2359                         set++;
2360                 else
2361                         set = iconv_opt;
2362                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2363                         goto oom;
2364                 args[ac++] = arg;
2365         }
2366 #endif
2367
2368         if (protect_args && !local_server) /* unprotected args stop here */
2369                 args[ac++] = NULL;
2370
2371         if (list_only > 1)
2372                 args[ac++] = "--list-only";
2373
2374         /* This makes sure that the remote rsync can handle deleting with -d
2375          * sans -r because the --no-r option was added at the same time. */
2376         if (xfer_dirs && !recurse && delete_mode && am_sender)
2377                 args[ac++] = "--no-r";
2378
2379         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2380                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2381                         goto oom;
2382                 args[ac++] = arg;
2383         }
2384
2385         if (preserve_devices) {
2386                 /* Note: sending "--devices" would not be backward-compatible. */
2387                 if (!preserve_specials)
2388                         args[ac++] = "--no-specials"; /* -D is already set. */
2389         } else if (preserve_specials)
2390                 args[ac++] = "--specials";
2391
2392         /* The server side doesn't use our log-format, but in certain
2393          * circumstances they need to know a little about the option. */
2394         if (stdout_format && am_sender) {
2395                 /* Use --log-format, not --out-format, for compatibility. */
2396                 if (stdout_format_has_i > 1)
2397                         args[ac++] = "--log-format=%i%I";
2398                 else if (stdout_format_has_i)
2399                         args[ac++] = "--log-format=%i";
2400                 else if (stdout_format_has_o_or_i)
2401                         args[ac++] = "--log-format=%o";
2402                 else if (!verbose)
2403                         args[ac++] = "--log-format=X";
2404         }
2405
2406         if (block_size) {
2407                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2408                         goto oom;
2409                 args[ac++] = arg;
2410         }
2411
2412         if (io_timeout) {
2413                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2414                         goto oom;
2415                 args[ac++] = arg;
2416         }
2417
2418         if (bwlimit) {
2419                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2420                         goto oom;
2421                 args[ac++] = arg;
2422         }
2423
2424         if (backup_dir) {
2425                 args[ac++] = "--backup-dir";
2426                 args[ac++] = backup_dir;
2427         }
2428
2429         /* Only send --suffix if it specifies a non-default value. */
2430         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2431                 /* We use the following syntax to avoid weirdness with '~'. */
2432                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2433                         goto oom;
2434                 args[ac++] = arg;
2435         }
2436
2437         if (am_sender) {
2438                 if (max_delete > 0) {
2439                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2440                                 goto oom;
2441                         args[ac++] = arg;
2442                 } else if (max_delete == 0)
2443                         args[ac++] = "--max-delete=-1";
2444                 if (min_size) {
2445                         args[ac++] = "--min-size";
2446                         args[ac++] = min_size_arg;
2447                 }
2448                 if (max_size) {
2449                         args[ac++] = "--max-size";
2450                         args[ac++] = max_size_arg;
2451                 }
2452                 if (delete_before)
2453                         args[ac++] = "--delete-before";
2454                 else if (delete_during == 2)
2455                         args[ac++] = "--delete-delay";
2456                 else if (delete_during)
2457                         args[ac++] = "--delete-during";
2458                 else if (delete_after)
2459                         args[ac++] = "--delete-after";
2460                 else if (delete_mode && !delete_excluded)
2461                         args[ac++] = "--delete";
2462                 if (delete_excluded)
2463                         args[ac++] = "--delete-excluded";
2464                 if (force_delete)
2465                         args[ac++] = "--force";
2466                 if (write_batch < 0)
2467                         args[ac++] = "--only-write-batch=X";
2468                 if (am_root > 1)
2469                         args[ac++] = "--super";
2470                 if (size_only)
2471                         args[ac++] = "--size-only";
2472                 if (do_stats)
2473                         args[ac++] = "--stats";
2474         } else {
2475                 if (skip_compress) {
2476                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2477                                 goto oom;
2478                         args[ac++] = arg;
2479                 }
2480         }
2481
2482         if (modify_window_set) {
2483                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
2484                         goto oom;
2485                 args[ac++] = arg;
2486         }
2487
2488         if (checksum_seed) {
2489                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2490                         goto oom;
2491                 args[ac++] = arg;
2492         }
2493
2494         if (partial_dir && am_sender) {
2495                 if (partial_dir != tmp_partialdir) {
2496                         args[ac++] = "--partial-dir";
2497                         args[ac++] = partial_dir;
2498                 }
2499                 if (delay_updates)
2500                         args[ac++] = "--delay-updates";
2501         } else if (keep_partial && am_sender)
2502                 args[ac++] = "--partial";
2503
2504         if (ignore_errors)
2505                 args[ac++] = "--ignore-errors";
2506
2507         if (copy_unsafe_links)
2508                 args[ac++] = "--copy-unsafe-links";
2509
2510         if (safe_symlinks)
2511                 args[ac++] = "--safe-links";
2512
2513         if (numeric_ids)
2514                 args[ac++] = "--numeric-ids";
2515
2516         if (use_qsort)
2517                 args[ac++] = "--use-qsort";
2518
2519         if (am_sender) {
2520                 if (usermap) {
2521                         if (asprintf(&arg, "--usermap=%s", usermap) < 0)
2522                                 goto oom;
2523                         args[ac++] = arg;
2524                 }
2525
2526                 if (groupmap) {
2527                         if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
2528                                 goto oom;
2529                         args[ac++] = arg;
2530                 }
2531
2532                 if (ignore_existing)
2533                         args[ac++] = "--ignore-existing";
2534
2535                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2536                 if (ignore_non_existing)
2537                         args[ac++] = "--existing";
2538
2539                 if (tmpdir) {
2540                         args[ac++] = "--temp-dir";
2541                         args[ac++] = tmpdir;
2542                 }
2543
2544                 if (basis_dir[0]) {
2545                         /* the server only needs this option if it is not the sender,
2546                          *   and it may be an older version that doesn't know this
2547                          *   option, so don't send it if client is the sender.
2548                          */
2549                         for (i = 0; i < basis_dir_cnt; i++) {
2550                                 args[ac++] = dest_option;
2551                                 args[ac++] = basis_dir[i];
2552                         }
2553                 }
2554         }
2555
2556         /* What flags do we need to send to the other side? */
2557         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2558         arg = make_output_option(info_words, info_levels, where);
2559         if (arg)
2560                 args[ac++] = arg;
2561
2562         arg = make_output_option(debug_words, debug_levels, where);
2563         if (arg)
2564                 args[ac++] = arg;
2565
2566         if (append_mode) {
2567                 if (append_mode > 1)
2568                         args[ac++] = "--append";
2569                 args[ac++] = "--append";
2570         } else if (inplace)
2571                 args[ac++] = "--inplace";
2572
2573         if (files_from && (!am_sender || filesfrom_host)) {
2574                 if (filesfrom_host) {
2575                         args[ac++] = "--files-from";
2576                         args[ac++] = files_from;
2577                         if (eol_nulls)
2578                                 args[ac++] = "--from0";
2579                 } else {
2580                         args[ac++] = "--files-from=-";
2581                         args[ac++] = "--from0";
2582                 }
2583                 if (!relative_paths)
2584                         args[ac++] = "--no-relative";
2585         }
2586         /* It's OK that this checks the upper-bound of the protocol_version. */
2587         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2588                 args[ac++] = "--no-implied-dirs";
2589
2590         if (fuzzy_basis && am_sender)
2591                 args[ac++] = "--fuzzy";
2592
2593         if (remove_source_files == 1)
2594                 args[ac++] = "--remove-source-files";
2595         else if (remove_source_files)
2596                 args[ac++] = "--remove-sent-files";
2597
2598         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2599                 rprintf(FERROR, "argc overflow in server_options().\n");
2600                 exit_cleanup(RERR_MALLOC);
2601         }
2602
2603         if (remote_option_cnt) {
2604                 int j;
2605                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2606                         rprintf(FERROR, "too many remote options specified.\n");
2607                         exit_cleanup(RERR_SYNTAX);
2608                 }
2609                 for (j = 1; j <= remote_option_cnt; j++)
2610                         args[ac++] = (char*)remote_options[j];
2611         }
2612
2613         *argc_p = ac;
2614         return;
2615
2616     oom:
2617         out_of_memory("server_options");
2618 }
2619
2620 /* If str points to a valid hostspec, return allocated memory containing the
2621  * [USER@]HOST part of the string, and set the path_start_ptr to the part of
2622  * the string after the host part.  Otherwise, return NULL.  If port_ptr is
2623  * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
2624  * *port_ptr if a port number is found.  Note that IPv6 IPs will have their
2625  * (required for parsing) [ and ] chars elided from the returned string. */
2626 static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
2627 {
2628         char *s, *host_start = str;
2629         int hostlen = 0, userlen = 0;
2630         char *ret;
2631
2632         for (s = str; ; s++) {
2633                 if (!*s) {
2634                         /* It is only OK if we run out of string with rsync:// */
2635                         if (!port_ptr)
2636                                 return NULL;
2637                         if (!hostlen)
2638                                 hostlen = s - host_start;
2639                         break;
2640                 }
2641                 if (*s == ':' || *s == '/') {
2642                         if (!hostlen)
2643                                 hostlen = s - host_start;
2644                         if (*s++ == '/') {
2645                                 if (!port_ptr)
2646                                         return NULL;
2647                         } else if (port_ptr) {
2648                                 *port_ptr = atoi(s);
2649                                 while (isDigit(s)) s++;
2650                                 if (*s && *s++ != '/')
2651                                         return NULL;
2652                         }
2653                         break;
2654                 }
2655                 if (*s == '@') {
2656                         userlen = s - str + 1;
2657                         host_start = s + 1;
2658                 } else if (*s == '[') {
2659                         if (s != host_start++)
2660                                 return NULL;
2661                         while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
2662                         hostlen = s - host_start;
2663                         if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
2664                                 return NULL;
2665                 }
2666         }
2667
2668         *path_start_ptr = s;
2669         ret = new_array(char, userlen + hostlen + 1);
2670         if (userlen)
2671                 strlcpy(ret, str, userlen + 1);
2672         strlcpy(ret + userlen, host_start, hostlen + 1);
2673         return ret;
2674 }
2675
2676 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2677  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2678  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2679  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2680  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2681  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2682  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2683 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2684 {
2685         char *path;
2686
2687         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2688                 *host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
2689                 if (*host_ptr) {
2690                         if (!*port_ptr)
2691                                 *port_ptr = RSYNC_PORT;
2692                         return path;
2693                 }
2694         }
2695
2696         *host_ptr = parse_hostspec(s, &path, NULL);
2697         if (!*host_ptr)
2698                 return NULL;
2699
2700         if (*path == ':') {
2701                 if (port_ptr && !*port_ptr)
2702                         *port_ptr = RSYNC_PORT;
2703                 return path + 1;
2704         }
2705         if (port_ptr)
2706                 *port_ptr = 0;
2707
2708         return path;
2709 }