options.c

   1 /*
   2  * Command-line (and received via daemon-socket) option parsing.
   3  *
   4  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
   5  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
   6  * Copyright (C) 2002-2020 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include "itypes.h"
  24 #include "latest-year.h"
  25 #include <popt.h>
  26 #include <zlib.h>
  27
  28 extern int module_id;
  29 extern int local_server;
  30 extern int sanitize_paths;
  31 extern int daemon_over_rsh;
  32 extern unsigned int module_dirlen;
  33 extern filter_rule_list filter_list;
  34 extern filter_rule_list daemon_filter_list;
  35
  36 #define NOT_SPECIFIED (-42)
  37
  38 int make_backups = 0;
  39
  40 /**
  41  * If 1, send the whole file as literal data rather than trying to
  42  * create an incremental diff.
  43  *
  44  * If -1, then look at whether we're local or remote and go by that.
  45  *
  46  * @sa disable_deltas_p()
  47  **/
  48 int whole_file = -1;
  49
  50 int append_mode = 0;
  51 int keep_dirlinks = 0;
  52 int copy_dirlinks = 0;
  53 int copy_links = 0;
  54 int write_devices = 0;
  55 int preserve_links = 0;
  56 int preserve_hard_links = 0;
  57 int preserve_acls = 0;
  58 int preserve_xattrs = 0;
  59 int preserve_perms = 0;
  60 int preserve_executability = 0;
  61 int preserve_devices = 0;
  62 int preserve_specials = 0;
  63 int preserve_uid = 0;
  64 int preserve_gid = 0;
  65 int preserve_times = 0;
  66 int preserve_atimes = 0;
  67 int update_only = 0;
  68 int open_noatime = 0;
  69 int cvs_exclude = 0;
  70 int dry_run = 0;
  71 int do_xfers = 1;
  72 int ignore_times = 0;
  73 int delete_mode = 0;
  74 int delete_during = 0;
  75 int delete_before = 0;
  76 int delete_after = 0;
  77 int delete_excluded = 0;
  78 int remove_source_files = 0;
  79 int one_file_system = 0;
  80 int protocol_version = PROTOCOL_VERSION;
  81 int sparse_files = 0;
  82 int preallocate_files = 0;
  83 int do_compression = 0;
  84 int def_compress_level = NOT_SPECIFIED;
  85 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  86 int am_server = 0;
  87 int am_sender = 0;
  88 int am_starting_up = 1;
  89 int relative_paths = -1;
  90 int implied_dirs = 1;
  91 int missing_args = 0; /* 0 = FERROR_XFER, 1 = ignore, 2 = delete */
  92 int numeric_ids = 0;
  93 int msgs2stderr = 0;
  94 int allow_8bit_chars = 0;
  95 int force_delete = 0;
  96 int io_timeout = 0;
  97 int prune_empty_dirs = 0;
  98 int use_qsort = 0;
  99 char *files_from = NULL;
 100 int filesfrom_fd = -1;
 101 char *filesfrom_host = NULL;
 102 int eol_nulls = 0;
 103 int protect_args = -1;
 104 int human_readable = 1;
 105 int recurse = 0;
 106 int allow_inc_recurse = 1;
 107 int xfer_dirs = -1;
 108 int am_daemon = 0;
 109 int connect_timeout = 0;
 110 int keep_partial = 0;
 111 int safe_symlinks = 0;
 112 int copy_unsafe_links = 0;
 113 int munge_symlinks = 0;
 114 int size_only = 0;
 115 int daemon_bwlimit = 0;
 116 int bwlimit = 0;
 117 int fuzzy_basis = 0;
 118 size_t bwlimit_writemax = 0;
 119 int ignore_existing = 0;
 120 int ignore_non_existing = 0;
 121 int need_messages_from_generator = 0;
 122 int max_delete = INT_MIN;
 123 OFF_T max_size = -1;
 124 OFF_T min_size = -1;
 125 int ignore_errors = 0;
 126 int modify_window = 0;
 127 int blocking_io = -1;
 128 int checksum_seed = 0;
 129 int inplace = 0;
 130 int delay_updates = 0;
 131 long block_size = 0; /* "long" because popt can't set an int32. */
 132 char *skip_compress = NULL;
 133 char *copy_as = NULL;
 134 item_list dparam_list = EMPTY_ITEM_LIST;
 135
 136 /** Network address family. **/
 137 int default_af_hint
 138 #ifdef INET6
 139         = 0;            /* Any protocol */
 140 #else
 141         = AF_INET;      /* Must use IPv4 */
 142 # ifdef AF_INET6
 143 #  undef AF_INET6
 144 # endif
 145 # define AF_INET6 AF_INET /* make -6 option a no-op */
 146 #endif
 147
 148 /** Do not go into the background when run as --daemon.  Good
 149  * for debugging and required for running as a service on W32,
 150  * or under Unix process-monitors. **/
 151 int no_detach
 152 #if defined _WIN32 || defined __WIN32__
 153         = 1;
 154 #else
 155         = 0;
 156 #endif
 157
 158 int write_batch = 0;
 159 int read_batch = 0;
 160 int backup_dir_len = 0;
 161 int backup_suffix_len;
 162 unsigned int backup_dir_remainder;
 163
 164 char *backup_suffix = NULL;
 165 char *tmpdir = NULL;
 166 char *partial_dir = NULL;
 167 char *basis_dir[MAX_BASIS_DIRS+1];
 168 char *config_file = NULL;
 169 char *shell_cmd = NULL;
 170 char *logfile_name = NULL;
 171 char *logfile_format = NULL;
 172 char *stdout_format = NULL;
 173 char *password_file = NULL;
 174 char *rsync_path = RSYNC_PATH;
 175 char *backup_dir = NULL;
 176 char backup_dir_buf[MAXPATHLEN];
 177 char *sockopts = NULL;
 178 char *usermap = NULL;
 179 char *groupmap = NULL;
 180 int rsync_port = 0;
 181 int compare_dest = 0;
 182 int copy_dest = 0;
 183 int link_dest = 0;
 184 int basis_dir_cnt = 0;
 185 char *dest_option = NULL;
 186
 187 static int remote_option_alloc = 0;
 188 int remote_option_cnt = 0;
 189 const char **remote_options = NULL;
 190 const char *checksum_choice = NULL;
 191 const char *compress_choice = NULL;
 192
 193 int quiet = 0;
 194 int output_motd = 1;
 195 int log_before_transfer = 0;
 196 int stdout_format_has_i = 0;
 197 int stdout_format_has_o_or_i = 0;
 198 int logfile_format_has_i = 0;
 199 int logfile_format_has_o_or_i = 0;
 200 int always_checksum = 0;
 201 int list_only = 0;
 202
 203 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 204 char *batch_name = NULL;
 205
 206 int need_unsorted_flist = 0;
 207 #ifdef ICONV_OPTION
 208 char *iconv_opt = ICONV_OPTION;
 209 #endif
 210
 211 struct chmod_mode_struct *chmod_modes = NULL;
 212
 213 static const char *debug_verbosity[] = {
 214         /*0*/ NULL,
 215         /*1*/ NULL,
 216         /*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
 217         /*3*/ "ACL,BACKUP,CONNECT2,DELTASUM2,DEL2,EXIT,FILTER2,FLIST2,FUZZY,GENR,OWN,RECV,SEND,TIME",
 218         /*4*/ "CMD2,DELTASUM3,DEL3,EXIT2,FLIST3,ICONV2,OWN2,PROTO,TIME2",
 219         /*5*/ "CHDIR,DELTASUM4,FLIST4,FUZZY2,HASH,HLINK",
 220 };
 221
 222 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 223
 224 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 225         /*0*/ NULL,
 226         /*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
 227         /*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
 228 };
 229
 230 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 231
 232 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 233
 234 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 235 #define HELP_PRIORITY 1         /* The help output uses this level. */
 236 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 237 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 238
 239 #define W_CLI (1<<0)    /* client side */
 240 #define W_SRV (1<<1)    /* server side */
 241 #define W_SND (1<<2)    /* sending side */
 242 #define W_REC (1<<3)    /* receiving side */
 243
 244 struct output_struct {
 245         char *name;     /* The name of the info/debug flag. */
 246         char *help;     /* The description of the info/debug flag. */
 247         uchar namelen;  /* The length of the name string. */
 248         uchar flag;     /* The flag's value, for consistency check. */
 249         uchar where;    /* Bits indicating where the flag is used. */
 250         uchar priority; /* See *_PRIORITY defines. */
 251 };
 252
 253 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 254
 255 static struct output_struct info_words[COUNT_INFO+1] = {
 256         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 257         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 258         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 259         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 260         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
 261         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 262         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 263         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 264         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 265         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 266         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 267         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 268         { NULL, "--info", 0, 0, 0, 0 }
 269 };
 270
 271 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 272
 273 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 274         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 275         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 276         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 277         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 278         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events (levels 1-2)"),
 279         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 280         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 281         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 282         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 283         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-3)"),
 284         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 285         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 286         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 287         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 288         DEBUG_WORD(HASH, W_SND|W_REC, "Debug hashtable code"),
 289         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions (levels 1-3)"),
 290         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
 291         DEBUG_WORD(IO, W_CLI|W_SRV, "Debug I/O routines (levels 1-4)"),
 292         DEBUG_WORD(NSTR, W_CLI|W_SRV, "Debug negotiation strings"),
 293         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 294         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 295         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 296         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 297         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 298         { NULL, "--debug", 0, 0, 0, 0 }
 299 };
 300
 301 static int verbose = 0;
 302 static int do_stats = 0;
 303 static int do_progress = 0;
 304 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 305 static int omit_dir_times = 0;
 306 static int omit_link_times = 0;
 307 static int F_option_cnt = 0;
 308 static int modify_window_set;
 309 static int itemize_changes = 0;
 310 static int refused_delete, refused_archive_part, refused_compress;
 311 static int refused_partial, refused_progress, refused_delete_before;
 312 static int refused_delete_during;
 313 static int refused_inplace, refused_no_iconv;
 314 static BOOL usermap_via_chown, groupmap_via_chown;
 315 #ifdef HAVE_SETVBUF
 316 static char *outbuf_mode;
 317 #endif
 318 static char *bwlimit_arg, *max_size_arg, *min_size_arg;
 319 static char tmp_partialdir[] = ".~tmp~";
 320
 321 /** Local address to bind.  As a character string because it's
 322  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 323  * address, or a hostname. **/
 324 char *bind_address;
 325
 326 static void output_item_help(struct output_struct *words);
 327
 328 /* This constructs a string that represents all the options set for either
 329  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 330  * This is used both when conveying the user's options to the server, and
 331  * when the help output wants to tell the user what options are implied. */
 332 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 333 {
 334         char *str = words == info_words ? "--info=" : "--debug=";
 335         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 336         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 337         char *buf;
 338
 339         memset(counts, 0, sizeof counts);
 340
 341         for (j = 0; words[j].name; j++) {
 342                 if (words[j].flag != j) {
 343                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 344                                 words == info_words ? "INFO_" : "DEBUG_",
 345                                 words[j].name, words[j].flag, j);
 346                         exit_cleanup(RERR_UNSUPPORTED);
 347                 }
 348                 if (!(words[j].where & where))
 349                         continue;
 350                 if (words[j].priority == DEFAULT_PRIORITY) {
 351                         /* Implied items don't need to be mentioned. */
 352                         skipped++;
 353                         continue;
 354                 }
 355                 len += len ? 1 : strlen(str);
 356                 len += strlen(words[j].name);
 357                 len += levels[j] == 1 ? 0 : 1;
 358
 359                 if (words[j].priority == HELP_PRIORITY)
 360                         continue; /* no abbreviating for help */
 361
 362                 assert(levels[j] <= MAX_OUT_LEVEL);
 363                 if (++counts[levels[j]] > max) {
 364                         /* Determine which level has the most items. */
 365                         lev = levels[j];
 366                         max = counts[lev];
 367                 }
 368         }
 369
 370         /* Sanity check the COUNT_* define against the length of the table. */
 371         if (j != word_count) {
 372                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 373                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 374                         j, word_count);
 375                 exit_cleanup(RERR_UNSUPPORTED);
 376         }
 377
 378         if (!len)
 379                 return NULL;
 380
 381         len++;
 382         if (!(buf = new_array(char, len)))
 383                 out_of_memory("make_output_option");
 384         pos = 0;
 385
 386         if (skipped || max < 5)
 387                 lev = -1;
 388         else {
 389                 if (lev == 0)
 390                         pos += snprintf(buf, len, "%sNONE", str);
 391                 else if (lev == 1)
 392                         pos += snprintf(buf, len, "%sALL", str);
 393                 else
 394                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 395         }
 396
 397         for (j = 0; words[j].name && pos < len; j++) {
 398                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 399                         continue;
 400                 if (pos)
 401                         buf[pos++] = ',';
 402                 else
 403                         pos += strlcpy(buf+pos, str, len-pos);
 404                 if (pos < len)
 405                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 406                 /* Level 1 is implied by the name alone. */
 407                 if (levels[j] != 1 && pos < len)
 408                         buf[pos++] = '0' + levels[j];
 409         }
 410
 411         buf[pos] = '\0';
 412
 413         return buf;
 414 }
 415
 416 static void parse_output_words(struct output_struct *words, short *levels,
 417                                const char *str, uchar priority)
 418 {
 419         const char *s;
 420         int j, len, lev;
 421
 422         for ( ; str; str = s) {
 423                 if ((s = strchr(str, ',')) != NULL)
 424                         len = s++ - str;
 425                 else
 426                         len = strlen(str);
 427                 if (!len)
 428                         continue;
 429                 if (!isDigit(str)) {
 430                         while (len && isDigit(str+len-1))
 431                                 len--;
 432                 }
 433                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 434                 if (lev > MAX_OUT_LEVEL)
 435                         lev = MAX_OUT_LEVEL;
 436                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 437                         output_item_help(words);
 438                         exit_cleanup(0);
 439                 }
 440                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 441                         len = lev = 0;
 442                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 443                         len = 0;
 444                 for (j = 0; words[j].name; j++) {
 445                         if (!len
 446                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 447                                 if (priority >= words[j].priority) {
 448                                         words[j].priority = priority;
 449                                         levels[j] = lev;
 450                                 }
 451                                 if (len)
 452                                         break;
 453                         }
 454                 }
 455                 if (len && !words[j].name && !am_server) {
 456                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 457                                 words[j].help, len, str);
 458                         exit_cleanup(RERR_SYNTAX);
 459                 }
 460         }
 461 }
 462
 463 /* Tell the user what all the info or debug flags mean. */
 464 static void output_item_help(struct output_struct *words)
 465 {
 466         short *levels = words == info_words ? info_levels : debug_levels;
 467         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 468         char buf[128], *opt, *fmt = "%-10s %s\n";
 469         int j;
 470
 471         reset_output_levels();
 472
 473         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 474         rprintf(FINFO, "\n");
 475         for (j = 0; words[j].name; j++)
 476                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 477         rprintf(FINFO, "\n");
 478
 479         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 480                  words[j].help, MAX_OUT_LEVEL);
 481         rprintf(FINFO, fmt, "ALL", buf);
 482
 483         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 484                  words[j].help);
 485         rprintf(FINFO, fmt, "NONE", buf);
 486
 487         rprintf(FINFO, fmt, "HELP", "Output this help message");
 488         rprintf(FINFO, "\n");
 489         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 490
 491         for (j = 1; j <= MAX_VERBOSITY; j++) {
 492                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 493                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 494                 if (opt) {
 495                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 496                         free(opt);
 497                 }
 498                 reset_output_levels();
 499         }
 500 }
 501
 502 /* The --verbose option now sets info+debug flags. */
 503 static void set_output_verbosity(int level, uchar priority)
 504 {
 505         int j;
 506
 507         if (level > MAX_VERBOSITY)
 508                 level = MAX_VERBOSITY;
 509
 510         for (j = 1; j <= level; j++) {
 511                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 512                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 513         }
 514 }
 515
 516 /* Limit the info+debug flag levels given a verbose-option level limit. */
 517 void limit_output_verbosity(int level)
 518 {
 519         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 520         int j;
 521
 522         if (level > MAX_VERBOSITY)
 523                 return;
 524
 525         memset(info_limits, 0, sizeof info_limits);
 526         memset(debug_limits, 0, sizeof debug_limits);
 527
 528         /* Compute the level limits in the above arrays. */
 529         for (j = 1; j <= level; j++) {
 530                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 531                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 532         }
 533
 534         for (j = 0; j < COUNT_INFO; j++) {
 535                 if (info_levels[j] > info_limits[j])
 536                         info_levels[j] = info_limits[j];
 537         }
 538
 539         for (j = 0; j < COUNT_DEBUG; j++) {
 540                 if (debug_levels[j] > debug_limits[j])
 541                         debug_levels[j] = debug_limits[j];
 542         }
 543 }
 544
 545 void reset_output_levels(void)
 546 {
 547         int j;
 548
 549         memset(info_levels, 0, sizeof info_levels);
 550         memset(debug_levels, 0, sizeof debug_levels);
 551
 552         for (j = 0; j < COUNT_INFO; j++)
 553                 info_words[j].priority = DEFAULT_PRIORITY;
 554
 555         for (j = 0; j < COUNT_DEBUG; j++)
 556                 debug_words[j].priority = DEFAULT_PRIORITY;
 557 }
 558
 559 void negate_output_levels(void)
 560 {
 561         int j;
 562
 563         for (j = 0; j < COUNT_INFO; j++)
 564                 info_levels[j] *= -1;
 565
 566         for (j = 0; j < COUNT_DEBUG; j++)
 567                 debug_levels[j] *= -1;
 568 }
 569
 570 static void print_rsync_version(enum logcode f)
 571 {
 572         char *subprotocol = "";
 573         char const *got_socketpair = "no ";
 574         char const *have_inplace = "no ";
 575         char const *hardlinks = "no ";
 576         char const *prealloc = "no ";
 577         char const *symtimes = "no ";
 578         char const *acls = "no ";
 579         char const *xattrs = "no ";
 580         char const *links = "no ";
 581         char const *iconv = "no ";
 582         char const *ipv6 = "no ";
 583         char const *simd = "no ";
 584         char const *xxhash = "no ";
 585         STRUCT_STAT *dumstat;
 586
 587 #if SUBPROTOCOL_VERSION != 0
 588         if (asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION) < 0)
 589                 out_of_memory("print_rsync_version");
 590 #endif
 591 #ifdef HAVE_SOCKETPAIR
 592         got_socketpair = "";
 593 #endif
 594 #ifdef HAVE_FTRUNCATE
 595         have_inplace = "";
 596 #endif
 597 #ifdef SUPPORT_HARD_LINKS
 598         hardlinks = "";
 599 #endif
 600 #ifdef SUPPORT_PREALLOCATION
 601         prealloc = "";
 602 #endif
 603 #ifdef SUPPORT_ACLS
 604         acls = "";
 605 #endif
 606 #ifdef SUPPORT_XATTRS
 607         xattrs = "";
 608 #endif
 609 #ifdef SUPPORT_LINKS
 610         links = "";
 611 #endif
 612 #ifdef INET6
 613         ipv6 = "";
 614 #endif
 615 #ifdef ICONV_OPTION
 616         iconv = "";
 617 #endif
 618 #ifdef CAN_SET_SYMLINK_TIMES
 619         symtimes = "";
 620 #endif
 621 #ifdef HAVE_SIMD
 622         simd = "";
 623 #endif
 624 #ifdef SUPPORT_XXHASH
 625         xxhash = "";
 626 #endif
 627
 628         rprintf(f, "%s  version %s  protocol version %d%s\n",
 629                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 630         rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
 631         rprintf(f, "Web site: http://rsync.samba.org/\n");
 632         rprintf(f, "Capabilities:\n");
 633         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 634                 (int)(sizeof (OFF_T) * 8),
 635                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 636                 (int)(sizeof (time_t) * 8),
 637                 (int)(sizeof (int64) * 8));
 638         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 639                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 640         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes, %sprealloc, %sSIMD, %sxxhash\n",
 641                 have_inplace, acls, xattrs, iconv, symtimes, prealloc, simd, xxhash);
 642
 643 #ifdef MAINTAINER_MODE
 644         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 645 #endif
 646
 647 #if SIZEOF_INT64 < 8
 648         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 649 #endif
 650         if (sizeof (int64) != SIZEOF_INT64) {
 651                 rprintf(f,
 652                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 653                         (int) SIZEOF_INT64, (int) sizeof (int64));
 654         }
 655
 656         rprintf(f,"\n");
 657         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 658         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 659         rprintf(f,"General Public Licence for details.\n");
 660 }
 661
 662
 663 void usage(enum logcode F)
 664 {
 665   print_rsync_version(F);
 666
 667   rprintf(F,"\n");
 668   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 669   rprintf(F,"via a fast differencing algorithm.\n");
 670
 671   rprintf(F,"\n");
 672   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 673   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 674   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 675   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 676   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 677   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 678   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 679   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 680   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 681   rprintf(F,"\n");
 682   rprintf(F,"Options\n");
 683   rprintf(F," -v, --verbose               increase verbosity\n");
 684   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 685   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 686   rprintf(F,"     --msgs2stderr           special output handling for debugging\n");
 687   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 688   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 689   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 690   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 691   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 692   rprintf(F," -r, --recursive             recurse into directories\n");
 693   rprintf(F," -R, --relative              use relative path names\n");
 694   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 695   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 696   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 697   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 698   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 699   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 700   rprintf(F,"     --append                append data onto shorter files\n");
 701   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 702   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 703   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 704   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 705   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 706   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 707   rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
 708   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 709   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 710   rprintf(F," -H, --hard-links            preserve hard links\n");
 711   rprintf(F," -p, --perms                 preserve permissions\n");
 712   rprintf(F," -E, --executability         preserve the file's executability\n");
 713   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 714 #ifdef SUPPORT_ACLS
 715   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 716 #endif
 717 #ifdef SUPPORT_XATTRS
 718   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 719 #endif
 720   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 721   rprintf(F," -g, --group                 preserve group\n");
 722   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 723   rprintf(F,"     --specials              preserve special files\n");
 724   rprintf(F," -D                          same as --devices --specials\n");
 725   rprintf(F," -t, --times                 preserve modification times\n");
 726   rprintf(F," -U, --atimes                preserve access (last-used) times\n");
 727   rprintf(F,"     --open-noatime          avoid changing the atime on opened files\n");
 728   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 729   rprintf(F," -J, --omit-link-times       omit symlinks from --times\n");
 730   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 731 #ifdef SUPPORT_XATTRS
 732   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 733 #endif
 734   rprintf(F," -S, --sparse                turn sequences of nulls into sparse blocks\n");
 735 #ifdef SUPPORT_PREALLOCATION
 736   rprintf(F,"     --preallocate           allocate dest files before writing them\n");
 737 #else
 738   rprintf(F,"     --preallocate           pre-allocate dest files on remote receiver\n");
 739 #endif
 740   rprintf(F,"     --write-devices         write to devices as files (implies --inplace)\n");
 741   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 742   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 743   rprintf(F,"     --checksum-choice=STR   choose the checksum algorithms\n");
 744   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 745   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 746   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 747   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 748   rprintf(F,"     --existing              skip creating new files on receiver\n");
 749   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 750   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 751   rprintf(F,"     --del                   an alias for --delete-during\n");
 752   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 753   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 754   rprintf(F,"     --delete-during         receiver deletes during the transfer\n");
 755   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 756   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 757   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 758   rprintf(F,"     --ignore-missing-args   ignore missing source args without error\n");
 759   rprintf(F,"     --delete-missing-args   delete missing source args from destination\n");
 760   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 761   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 762   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 763   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 764   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 765   rprintf(F,"     --partial               keep partially transferred files\n");
 766   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 767   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 768   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 769   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 770   rprintf(F,"     --usermap=STRING        custom username mapping\n");
 771   rprintf(F,"     --groupmap=STRING       custom groupname mapping\n");
 772   rprintf(F,"     --chown=USER:GROUP      simple username/groupname mapping\n");
 773   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 774   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 775   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 776   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 777   rprintf(F,"     --size-only             skip files that match in size\n");
 778   rprintf(F," -@, --modify-window=NUM     set the accuracy for mod-time comparisons\n");
 779   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 780   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 781   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 782   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 783   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 784   rprintf(F," -z, --compress              compress file data during the transfer\n");
 785   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 786   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 787   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 788   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 789   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 790   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 791   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 792   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 793   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 794   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 795   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 796   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 797   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 798   rprintf(F,"     --copy-as=USER[:GROUP]  specify user & optional group for the copy\n");
 799   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 800   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 801   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 802   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 803   rprintf(F,"     --stats                 give some file-transfer stats\n");
 804   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 805   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 806   rprintf(F,"     --progress              show progress during transfer\n");
 807   rprintf(F," -P                          same as --partial --progress\n");
 808   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 809   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 810   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 811   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 812   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 813   rprintf(F,"     --list-only             list the files instead of copying them\n");
 814   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
 815 #ifdef HAVE_SETVBUF
 816   rprintf(F,"     --outbuf=N|L|B          set output buffering to None, Line, or Block\n");
 817 #endif
 818   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 819   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 820   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 821   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 822 #ifdef ICONV_OPTION
 823   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 824 #endif
 825   rprintf(F,"     --checksum-seed=NUM     set block/file checksum seed (advanced)\n");
 826   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 827   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 828   rprintf(F,"     --version               print version number\n");
 829   rprintf(F,"(-h) --help                  show this help (-h is --help only if used alone)\n");
 830
 831   rprintf(F,"\n");
 832   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 833   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 834   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 835 }
 836
 837 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 838       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 839       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 840       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 841       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 842       OPT_USERMAP, OPT_GROUPMAP, OPT_CHOWN, OPT_BWLIMIT,
 843       OPT_OLD_COMPRESS, OPT_NEW_COMPRESS, OPT_NO_COMPRESS,
 844       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 845
 846 static struct poptOption long_options[] = {
 847   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 848   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 849   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 850   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 851   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 852   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 853   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 854   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 855   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 856   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 857   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 858   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 859   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 860   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 861   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 862   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 863   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 864   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 865   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 866   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 867   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 868   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 869   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 870   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 871   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 872   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 873   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 874   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 875   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 876   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 877   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 878   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 879   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 880   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 881   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 882   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 883   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 884   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 885   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 886   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 887   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 888   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 889   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 890   {"atimes",          'U', POPT_ARG_NONE,   0, 'U', 0, 0 },
 891   {"no-atimes",        0,  POPT_ARG_VAL,    &preserve_atimes, 0, 0, 0 },
 892   {"no-U",             0,  POPT_ARG_VAL,    &preserve_atimes, 0, 0, 0 },
 893   {"open-noatime",     0,  POPT_ARG_VAL,    &open_noatime, 1, 0, 0 },
 894   {"no-open-noatime",  0,  POPT_ARG_VAL,    &open_noatime, 0, 0, 0 },
 895   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 896   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 897   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 898   {"omit-link-times", 'J', POPT_ARG_VAL,    &omit_link_times, 1, 0, 0 },
 899   {"no-omit-link-times",0, POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 900   {"no-J",             0,  POPT_ARG_VAL,    &omit_link_times, 0, 0, 0 },
 901   {"modify-window",   '@', POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 902   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 903   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 904   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 905   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 906   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 907   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 908   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 909   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 910   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 911   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 912   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 913   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 914   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 915   {"write-devices",    0,  POPT_ARG_VAL,    &write_devices, 1, 0, 0 },
 916   {"no-write-devices", 0,  POPT_ARG_VAL,    &write_devices, 0, 0, 0 },
 917   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 918   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 919   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 920   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 921   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 922   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 923   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 924   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 925   {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
 926   {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
 927   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 928   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 929   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 930   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 931   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 932   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 933   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 934   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 935   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 936   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 937   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 938   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 939   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 940   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 941   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 942   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 943   {"no-one-file-system",0, POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 944   {"no-x",             0,  POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 945   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 946   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 947   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 948   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 949   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 950   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 951   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
 952   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 953   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 954   {"preallocate",      0,  POPT_ARG_NONE,   &preallocate_files, 0, 0, 0},
 955   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
 956   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
 957   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 958   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 959   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 960   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 961   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 962   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 963   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 964   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 965   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 966   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 967   {"delete-missing-args",0,POPT_BIT_SET,    &missing_args, 2, 0, 0 },
 968   {"ignore-missing-args",0,POPT_BIT_SET,    &missing_args, 1, 0, 0 },
 969   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 970   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 971   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
 972   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
 973   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
 974   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
 975   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 976   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 977   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 978   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 979   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 980   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 981   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 982   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 983   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 984   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 985   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 986   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 987   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 988   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 989   {"checksum-choice",  0,  POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
 990   {"cc",               0,  POPT_ARG_STRING, &checksum_choice, 0, 0, 0 },
 991   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 992   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 993   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 994   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 995   {"fuzzy",           'y', POPT_ARG_NONE,   0, 'y', 0, 0 },
 996   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 997   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 998   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 999   {"old-compress",     0,  POPT_ARG_NONE,   0, OPT_OLD_COMPRESS, 0, 0 },
1000   {"new-compress",     0,  POPT_ARG_NONE,   0, OPT_NEW_COMPRESS, 0, 0 },
1001   {"no-compress",      0,  POPT_ARG_NONE,   0, OPT_NO_COMPRESS, 0, 0 },
1002   {"no-z",             0,  POPT_ARG_NONE,   0, OPT_NO_COMPRESS, 0, 0 },
1003   {"compress-choice",  0,  POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
1004   {"zz",               0,  POPT_ARG_STRING, &compress_choice, 0, 0, 0 },
1005   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
1006   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 0, 0, 0 },
1007   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
1008   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
1009   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
1010   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
1011   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
1012   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
1013   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
1014   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
1015   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
1016   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
1017   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
1018   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1019   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1020   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
1021   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
1022   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
1023   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
1024   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
1025   {"bwlimit",          0,  POPT_ARG_STRING, &bwlimit_arg, OPT_BWLIMIT, 0, 0 },
1026   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
1027   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
1028   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
1029   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
1030   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
1031   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
1032   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
1033   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
1034   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
1035   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
1036   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
1037   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
1038   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
1039   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
1040   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
1041   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
1042   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
1043   {"usermap",          0,  POPT_ARG_STRING, 0, OPT_USERMAP, 0, 0 },
1044   {"groupmap",         0,  POPT_ARG_STRING, 0, OPT_GROUPMAP, 0, 0 },
1045   {"chown",            0,  POPT_ARG_STRING, 0, OPT_CHOWN, 0, 0 },
1046   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
1047   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
1048   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
1049   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
1050   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
1051   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
1052   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1053 #ifdef ICONV_OPTION
1054   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
1055   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
1056 #endif
1057   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1058   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1059   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
1060   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1061   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
1062   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
1063   {"copy-as",          0,  POPT_ARG_STRING, &copy_as, 0, 0, 0 },
1064   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1065   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1066   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1067   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
1068   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
1069   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
1070 #ifdef HAVE_SETVBUF
1071   {"outbuf",           0,  POPT_ARG_STRING, &outbuf_mode, 0, 0, 0 },
1072 #endif
1073   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1074   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1075   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
1076   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
1077   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
1078   /* All the following options switch us into daemon-mode option-parsing. */
1079   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1080   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1081   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1082   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1083   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1084   {0,0,0,0, 0, 0, 0}
1085 };
1086
1087 static void daemon_usage(enum logcode F)
1088 {
1089   print_rsync_version(F);
1090
1091   rprintf(F,"\n");
1092   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1093   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1094   rprintf(F,"     --bwlimit=RATE          limit socket I/O bandwidth\n");
1095   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1096   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1097   rprintf(F,"     --no-detach             do not detach from the parent\n");
1098   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1099   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1100   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1101   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1102   rprintf(F," -v, --verbose               increase verbosity\n");
1103   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1104   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1105   rprintf(F,"     --help                  show this help screen\n");
1106
1107   rprintf(F,"\n");
1108   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1109   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1110 }
1111
1112 static struct poptOption long_daemon_options[] = {
1113   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1114   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1115   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1116   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1117   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1118   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1119   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1120   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1121   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1122   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1123   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1124   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1125   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1126   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1127   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1128   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1129   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1130   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1131   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1132   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1133   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1134   {0,0,0,0, 0, 0, 0}
1135 };
1136
1137
1138 static char err_buf[200];
1139
1140
1141 /**
1142  * Store the option error message, if any, so that we can log the
1143  * connection attempt (which requires parsing the options), and then
1144  * show the error later on.
1145  **/
1146 void option_error(void)
1147 {
1148         if (!err_buf[0]) {
1149                 strlcpy(err_buf, "Error parsing options: option may "
1150                         "be supported on client but not on server?\n",
1151                         sizeof err_buf);
1152         }
1153
1154         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1155         io_flush(FULL_FLUSH);
1156         msleep(20);
1157 }
1158
1159
1160 static void parse_one_refuse_match(int negated, const char *ref, const struct poptOption *list_end)
1161 {
1162         struct poptOption *op;
1163         char shortName[2];
1164         int is_wild = strpbrk(ref, "*?[") != NULL;
1165         int found_match = 0;
1166
1167         shortName[1] = '\0';
1168
1169         if (strcmp("a", ref) == 0 || strcmp("archive", ref) == 0) {
1170                 ref = "[ardlptgoD]";
1171                 is_wild = 1;
1172         }
1173
1174         for (op = long_options; op != list_end; op++) {
1175                 *shortName = op->shortName;
1176                 if ((op->longName && wildmatch(ref, op->longName))
1177                  || (*shortName && wildmatch(ref, shortName))) {
1178                         if (op->descrip[1] == '*')
1179                                 op->descrip = negated ? "a*" : "r*";
1180                         else if (!is_wild)
1181                                 op->descrip = negated ? "a=" : "r=";
1182                         found_match = 1;
1183                         if (!is_wild)
1184                                 break;
1185                 }
1186         }
1187
1188         if (!found_match)
1189                 rprintf(FLOG, "No match for refuse-options string \"%s\"\n", ref);
1190 }
1191
1192
1193 /**
1194  * Tweak the option table to disable all options that the rsyncd.conf
1195  * file has told us to refuse.
1196  **/
1197 static void set_refuse_options(void)
1198 {
1199         struct poptOption *op, *list_end = NULL;
1200         char *cp, *ref = lp_refuse_options(module_id);
1201         int negated;
1202
1203         if (!ref)
1204                 ref = "";
1205
1206         if (!*ref && !am_daemon) /* A simple optimization */
1207                 return;
1208
1209         /* We abuse the descrip field in poptOption to make it easy to flag which options
1210          * are refused (since we don't use it otherwise).  Start by marking all options
1211          * as "a"ccepted with a few options also marked as non-wild. */
1212         for (op = long_options; ; op++) {
1213                 const char *longName = op->longName ? op->longName : "";
1214                 if (!op->longName && !op->shortName) {
1215                         list_end = op;
1216                         break;
1217                 }
1218                 if (op->shortName == 'e' /* Required for compatibility flags */
1219                  || op->shortName == '0' /* --from0 just modifies --files-from, so refuse that instead (or not) */
1220                  || op->shortName == 's' /* --protect-args is always OK */
1221                  || op->shortName == 'n' /* --dry-run is always OK */
1222                  || strcmp("iconv", longName) == 0
1223                  || strcmp("no-iconv", longName) == 0
1224                  || strcmp("checksum-seed", longName) == 0
1225                  || strcmp("write-devices", longName) == 0 /* disable wild-match (it gets refused below) */
1226                  || strcmp("log-format", longName) == 0 /* aka out-format (NOT log-file-format) */
1227                  || strcmp("sender", longName) == 0
1228                  || strcmp("server", longName) == 0)
1229                         op->descrip = "a="; /* exact-match only */
1230                 else
1231                         op->descrip = "a*"; /* wild-card-able */
1232         }
1233         assert(list_end != NULL);
1234
1235         if (am_daemon) /* Refused by default, but can be accepted via "!write-devices" */
1236                 parse_one_refuse_match(0, "write-devices", list_end);
1237
1238         while (1) {
1239                 while (*ref == ' ') ref++;
1240                 if (!*ref)
1241                         break;
1242                 if ((cp = strchr(ref, ' ')) != NULL)
1243                         *cp = '\0';
1244                 negated = *ref == '!';
1245                 if (negated && ref[1])
1246                         ref++;
1247                 parse_one_refuse_match(negated, ref, list_end);
1248                 if (!cp)
1249                         break;
1250                 *cp = ' ';
1251                 ref = cp + 1;
1252         }
1253
1254         if (am_daemon) {
1255 #ifdef ICONV_OPTION
1256                 if (!*lp_charset(module_id))
1257                         parse_one_refuse_match(0, "iconv", list_end);
1258 #endif
1259                 parse_one_refuse_match(0, "log-file*", list_end);
1260         }
1261
1262         /* Now we use the descrip values to actually mark the options for refusal. */
1263         for (op = long_options; op != list_end; op++) {
1264                 int refused = op->descrip[0] == 'r';
1265                 op->descrip = NULL;
1266                 if (!refused)
1267                         continue;
1268                 if (op->argInfo == POPT_ARG_VAL)
1269                         op->argInfo = POPT_ARG_NONE;
1270                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1271                 /* The following flags are set to let us easily check an implied option later in the code. */
1272                 switch (op->shortName) {
1273                 case 'r': case 'd': case 'l': case 'p':
1274                 case 't': case 'g': case 'o': case 'D':
1275                         refused_archive_part = op->val;
1276                         break;
1277                 case 'z':
1278                         refused_compress = op->val;
1279                         break;
1280                 case '\0':
1281                         if (strcmp("delete", op->longName) == 0)
1282                                 refused_delete = op->val;
1283                         else if (strcmp("delete-before", op->longName) == 0)
1284                                 refused_delete_before = op->val;
1285                         else if (strcmp("delete-during", op->longName) == 0)
1286                                 refused_delete_during = op->val;
1287                         else if (strcmp("partial", op->longName) == 0)
1288                                 refused_partial = op->val;
1289                         else if (strcmp("progress", op->longName) == 0)
1290                                 refused_progress = op->val;
1291                         else if (strcmp("inplace", op->longName) == 0)
1292                                 refused_inplace = op->val;
1293                         else if (strcmp("no-iconv", op->longName) == 0)
1294                                 refused_no_iconv = op->val;
1295                         break;
1296                 }
1297         }
1298 }
1299
1300
1301 static int count_args(const char **argv)
1302 {
1303         int i = 0;
1304
1305         if (argv) {
1306                 while (argv[i] != NULL)
1307                         i++;
1308         }
1309
1310         return i;
1311 }
1312
1313
1314 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1315 {
1316         int reps, mult, make_compatible = 0;
1317         const char *arg;
1318         OFF_T size = 1;
1319
1320         for (arg = *size_arg; isDigit(arg); arg++) {}
1321         if (*arg == '.')
1322                 for (arg++; isDigit(arg); arg++) {}
1323         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1324         case 'b': case 'B':
1325                 reps = 0;
1326                 break;
1327         case 'k': case 'K':
1328                 reps = 1;
1329                 break;
1330         case 'm': case 'M':
1331                 reps = 2;
1332                 break;
1333         case 'g': case 'G':
1334                 reps = 3;
1335                 break;
1336         default:
1337                 return -1;
1338         }
1339         if (*arg == 'b' || *arg == 'B')
1340                 mult = 1000, make_compatible = 1, arg++;
1341         else if (!*arg || *arg == '+' || *arg == '-')
1342                 mult = 1024;
1343         else if (strncasecmp(arg, "ib", 2) == 0)
1344                 mult = 1024, arg += 2;
1345         else
1346                 return -1;
1347         while (reps--)
1348                 size *= mult;
1349         size *= atof(*size_arg);
1350         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1351                 size += atoi(arg), make_compatible = 1, arg += 2;
1352         if (*arg)
1353                 return -1;
1354         if (size > 0 && make_compatible && def_suf == 'b') {
1355                 /* We convert this manually because we may need %lld precision,
1356                  * and that's not a portable sprintf() escape. */
1357                 char buf[128], *s = buf + sizeof buf - 1;
1358                 OFF_T num = size;
1359                 *s = '\0';
1360                 while (num) {
1361                         *--s = (char)(num % 10) + '0';
1362                         num /= 10;
1363                 }
1364                 if (!(*size_arg = strdup(s)))
1365                         out_of_memory("parse_size_arg");
1366         }
1367         return size;
1368 }
1369
1370
1371 static void create_refuse_error(int which)
1372 {
1373         /* The "which" value is the index + OPT_REFUSED_BASE. */
1374         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1375         int n = snprintf(err_buf, sizeof err_buf,
1376                          "The server is configured to refuse --%s\n",
1377                          op->longName) - 1;
1378         if (op->shortName) {
1379                 snprintf(err_buf + n, sizeof err_buf - n,
1380                          " (-%c)\n", op->shortName);
1381         }
1382 }
1383
1384 /* This is used to make sure that --daemon & --server cannot be aliased to
1385  * something else. These options have always disabled popt aliases for the
1386  * parsing of a daemon or server command-line, but we have to make sure that
1387  * these options cannot vanish so that the alias disabling can take effect. */
1388 static void popt_unalias(poptContext con, const char *opt)
1389 {
1390         struct poptAlias unalias;
1391
1392         unalias.longName = opt + 2; /* point past the leading "--" */
1393         unalias.shortName = '\0';
1394         unalias.argc = 1;
1395         unalias.argv = new_array(const char*, 1);
1396         unalias.argv[0] = strdup(opt);
1397
1398         poptAddAlias(con, unalias, 0);
1399 }
1400
1401 /**
1402  * Process command line arguments.  Called on both local and remote.
1403  *
1404  * @retval 1 if all options are OK; with globals set to appropriate
1405  * values
1406  *
1407  * @retval 0 on error, with err_buf containing an explanation
1408  **/
1409 int parse_arguments(int *argc_p, const char ***argv_p)
1410 {
1411         static poptContext pc;
1412         const char *arg, **argv = *argv_p;
1413         int argc = *argc_p;
1414         int opt;
1415         int orig_protect_args = protect_args;
1416
1417         if (argc == 0) {
1418                 strlcpy(err_buf, "argc is zero!\n", sizeof err_buf);
1419                 return 0;
1420         }
1421
1422         set_refuse_options();
1423
1424 #ifdef ICONV_OPTION
1425         if (!am_daemon && protect_args <= 0 && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1426                 iconv_opt = strdup(arg);
1427 #endif
1428
1429         /* TODO: Call poptReadDefaultConfig; handle errors. */
1430
1431         /* The context leaks in case of an error, but if there's a
1432          * problem we always exit anyhow. */
1433         if (pc)
1434                 poptFreeContext(pc);
1435         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1436         if (!am_server) {
1437                 poptReadDefaultConfig(pc, 0);
1438                 popt_unalias(pc, "--daemon");
1439                 popt_unalias(pc, "--server");
1440         }
1441
1442         while ((opt = poptGetNextOpt(pc)) != -1) {
1443                 /* most options are handled automatically by popt;
1444                  * only special cases are returned and listed here. */
1445
1446                 switch (opt) {
1447                 case OPT_VERSION:
1448                         print_rsync_version(FINFO);
1449                         exit_cleanup(0);
1450
1451                 case OPT_SERVER:
1452                         if (!am_server) {
1453                                 /* Disable popt aliases on the server side and
1454                                  * then start parsing the options again. */
1455                                 poptFreeContext(pc);
1456                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1457                                                     long_options, 0);
1458                                 am_server = 1;
1459                         }
1460 #ifdef ICONV_OPTION
1461                         iconv_opt = NULL;
1462 #endif
1463                         break;
1464
1465                 case OPT_SENDER:
1466                         if (!am_server) {
1467                                 usage(FERROR);
1468                                 exit_cleanup(RERR_SYNTAX);
1469                         }
1470                         am_sender = 1;
1471                         break;
1472
1473                 case OPT_DAEMON:
1474                         if (am_daemon) {
1475                                 strlcpy(err_buf,
1476                                         "Attempt to hack rsync thwarted!\n",
1477                                         sizeof err_buf);
1478                                 return 0;
1479                         }
1480 #ifdef ICONV_OPTION
1481                         iconv_opt = NULL;
1482 #endif
1483                         protect_args = 0;
1484                         poptFreeContext(pc);
1485                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1486                                             long_daemon_options, 0);
1487                         while ((opt = poptGetNextOpt(pc)) != -1) {
1488                                 char **cpp;
1489                                 switch (opt) {
1490                                 case 'h':
1491                                         daemon_usage(FINFO);
1492                                         exit_cleanup(0);
1493
1494                                 case 'M':
1495                                         arg = poptGetOptArg(pc);
1496                                         if (!strchr(arg, '=')) {
1497                                                 rprintf(FERROR,
1498                                                     "--dparam value is missing an '=': %s\n",
1499                                                     arg);
1500                                                 goto daemon_error;
1501                                         }
1502                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1503                                         *cpp = strdup(arg);
1504                                         break;
1505
1506                                 case 'v':
1507                                         verbose++;
1508                                         break;
1509
1510                                 default:
1511                                         rprintf(FERROR,
1512                                             "rsync: %s: %s (in daemon mode)\n",
1513                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1514                                             poptStrerror(opt));
1515                                         goto daemon_error;
1516                                 }
1517                         }
1518
1519                         if (dparam_list.count && !set_dparams(1))
1520                                 exit_cleanup(RERR_SYNTAX);
1521
1522                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1523                                 snprintf(err_buf, sizeof err_buf,
1524                                          "the --temp-dir path is WAY too long.\n");
1525                                 return 0;
1526                         }
1527
1528                         if (!daemon_opt) {
1529                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1530                             daemon_error:
1531                                 rprintf(FERROR,
1532                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1533                                 exit_cleanup(RERR_SYNTAX);
1534                         }
1535
1536                         *argv_p = argv = poptGetArgs(pc);
1537                         *argc_p = argc = count_args(argv);
1538                         am_starting_up = 0;
1539                         daemon_opt = 0;
1540                         am_daemon = 1;
1541                         return 1;
1542
1543                 case OPT_MODIFY_WINDOW:
1544                         /* The value has already been set by popt, but
1545                          * we need to remember that we're using a
1546                          * non-default setting. */
1547                         modify_window_set = 1;
1548                         break;
1549
1550                 case OPT_FILTER:
1551                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1552                                         rule_template(0), 0);
1553                         break;
1554
1555                 case OPT_EXCLUDE:
1556                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1557                                         rule_template(0), XFLG_OLD_PREFIXES);
1558                         break;
1559
1560                 case OPT_INCLUDE:
1561                         parse_filter_str(&filter_list, poptGetOptArg(pc),
1562                                         rule_template(FILTRULE_INCLUDE), XFLG_OLD_PREFIXES);
1563                         break;
1564
1565                 case OPT_EXCLUDE_FROM:
1566                 case OPT_INCLUDE_FROM:
1567                         arg = poptGetOptArg(pc);
1568                         if (sanitize_paths)
1569                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1570                         if (daemon_filter_list.head) {
1571                                 int rej;
1572                                 char *cp = strdup(arg);
1573                                 if (!cp)
1574                                         out_of_memory("parse_arguments");
1575                                 if (!*cp)
1576                                         rej = 1;
1577                                 else {
1578                                         char *dir = cp + (*cp == '/' ? module_dirlen : 0);
1579                                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1580                                         rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1581                                 }
1582                                 free(cp);
1583                                 if (rej)
1584                                         goto options_rejected;
1585                         }
1586                         parse_filter_file(&filter_list, arg,
1587                                 rule_template(opt == OPT_INCLUDE_FROM ? FILTRULE_INCLUDE : 0),
1588                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1589                         break;
1590
1591                 case 'a':
1592                         if (refused_archive_part) {
1593                                 create_refuse_error(refused_archive_part);
1594                                 return 0;
1595                         }
1596                         if (!recurse) /* preserve recurse == 2 */
1597                                 recurse = 1;
1598 #ifdef SUPPORT_LINKS
1599                         preserve_links = 1;
1600 #endif
1601                         preserve_perms = 1;
1602                         preserve_times = 1;
1603                         preserve_gid = 1;
1604                         preserve_uid = 1;
1605                         preserve_devices = 1;
1606                         preserve_specials = 1;
1607                         break;
1608
1609                 case 'D':
1610                         preserve_devices = preserve_specials = 1;
1611                         break;
1612
1613                 case OPT_NO_D:
1614                         preserve_devices = preserve_specials = 0;
1615                         break;
1616
1617                 case 'h':
1618                         human_readable++;
1619                         break;
1620
1621                 case 'H':
1622                         preserve_hard_links++;
1623                         break;
1624
1625                 case 'i':
1626                         itemize_changes++;
1627                         break;
1628
1629                 case 'U':
1630                         if (++preserve_atimes > 1)
1631                                 open_noatime = 1;
1632                         break;
1633
1634                 case 'v':
1635                         verbose++;
1636                         break;
1637
1638                 case 'y':
1639                         fuzzy_basis++;
1640                         break;
1641
1642                 case 'q':
1643                         quiet++;
1644                         break;
1645
1646                 case 'x':
1647                         one_file_system++;
1648                         break;
1649
1650                 case 'F':
1651                         switch (++F_option_cnt) {
1652                         case 1:
1653                                 parse_filter_str(&filter_list,": /.rsync-filter",rule_template(0),0);
1654                                 break;
1655                         case 2:
1656                                 parse_filter_str(&filter_list,"- .rsync-filter",rule_template(0),0);
1657                                 break;
1658                         }
1659                         break;
1660
1661                 case 'P':
1662                         if (refused_partial || refused_progress) {
1663                                 create_refuse_error(refused_partial
1664                                     ? refused_partial : refused_progress);
1665                                 return 0;
1666                         }
1667                         do_progress = 1;
1668                         keep_partial = 1;
1669                         break;
1670
1671                 case 'z':
1672                         do_compression++;
1673                         break;
1674
1675                 case OPT_OLD_COMPRESS:
1676                         compress_choice = "zlib";
1677                         break;
1678
1679                 case OPT_NEW_COMPRESS:
1680                         compress_choice = "zlibx";
1681                         break;
1682
1683                 case OPT_NO_COMPRESS:
1684                         do_compression = 0;
1685                         compress_choice = NULL;
1686                         break;
1687
1688                 case 'M':
1689                         arg = poptGetOptArg(pc);
1690                         if (*arg != '-') {
1691                                 snprintf(err_buf, sizeof err_buf,
1692                                         "Remote option must start with a dash: %s\n", arg);
1693                                 return 0;
1694                         }
1695                         if (remote_option_cnt+2 >= remote_option_alloc) {
1696                                 remote_option_alloc += 16;
1697                                 remote_options = realloc_array(remote_options,
1698                                                         const char *, remote_option_alloc);
1699                                 if (!remote_options)
1700                                         out_of_memory("parse_arguments");
1701                                 if (!remote_option_cnt)
1702                                         remote_options[0] = "ARG0";
1703                         }
1704                         remote_options[++remote_option_cnt] = arg;
1705                         remote_options[remote_option_cnt+1] = NULL;
1706                         break;
1707
1708                 case OPT_WRITE_BATCH:
1709                         /* batch_name is already set */
1710                         write_batch = 1;
1711                         break;
1712
1713                 case OPT_ONLY_WRITE_BATCH:
1714                         /* batch_name is already set */
1715                         write_batch = -1;
1716                         break;
1717
1718                 case OPT_READ_BATCH:
1719                         /* batch_name is already set */
1720                         read_batch = 1;
1721                         break;
1722
1723                 case OPT_NO_ICONV:
1724 #ifdef ICONV_OPTION
1725                         iconv_opt = NULL;
1726 #endif
1727                         break;
1728
1729                 case OPT_MAX_SIZE:
1730                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) < 0) {
1731                                 snprintf(err_buf, sizeof err_buf,
1732                                         "--max-size value is invalid: %s\n",
1733                                         max_size_arg);
1734                                 return 0;
1735                         }
1736                         break;
1737
1738                 case OPT_MIN_SIZE:
1739                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) < 0) {
1740                                 snprintf(err_buf, sizeof err_buf,
1741                                         "--min-size value is invalid: %s\n",
1742                                         min_size_arg);
1743                                 return 0;
1744                         }
1745                         break;
1746
1747                 case OPT_BWLIMIT:
1748                         {
1749                                 OFF_T limit = parse_size_arg(&bwlimit_arg, 'K');
1750                                 if (limit < 0) {
1751                                         snprintf(err_buf, sizeof err_buf,
1752                                                 "--bwlimit value is invalid: %s\n", bwlimit_arg);
1753                                         return 0;
1754                                 }
1755                                 bwlimit = (limit + 512) / 1024;
1756                                 if (limit && !bwlimit) {
1757                                         snprintf(err_buf, sizeof err_buf,
1758                                                 "--bwlimit value is too small: %s\n", bwlimit_arg);
1759                                         return 0;
1760                                 }
1761                         }
1762                         break;
1763
1764                 case OPT_APPEND:
1765                         if (am_server)
1766                                 append_mode++;
1767                         else
1768                                 append_mode = 1;
1769                         break;
1770
1771                 case OPT_LINK_DEST:
1772 #ifdef SUPPORT_HARD_LINKS
1773                         link_dest = 1;
1774                         dest_option = "--link-dest";
1775                         goto set_dest_dir;
1776 #else
1777                         snprintf(err_buf, sizeof err_buf,
1778                                  "hard links are not supported on this %s\n",
1779                                  am_server ? "server" : "client");
1780                         return 0;
1781 #endif
1782
1783                 case OPT_COPY_DEST:
1784                         copy_dest = 1;
1785                         dest_option = "--copy-dest";
1786                         goto set_dest_dir;
1787
1788                 case OPT_COMPARE_DEST:
1789                         compare_dest = 1;
1790                         dest_option = "--compare-dest";
1791                 set_dest_dir:
1792                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1793                                 snprintf(err_buf, sizeof err_buf,
1794                                         "ERROR: at most %d %s args may be specified\n",
1795                                         MAX_BASIS_DIRS, dest_option);
1796                                 return 0;
1797                         }
1798                         /* We defer sanitizing this arg until we know what
1799                          * our destination directory is going to be. */
1800                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1801                         break;
1802
1803                 case OPT_CHMOD:
1804                         arg = poptGetOptArg(pc);
1805                         if (!parse_chmod(arg, &chmod_modes)) {
1806                                 snprintf(err_buf, sizeof err_buf,
1807                                     "Invalid argument passed to --chmod (%s)\n",
1808                                     arg);
1809                                 return 0;
1810                         }
1811                         break;
1812
1813                 case OPT_INFO:
1814                         arg = poptGetOptArg(pc);
1815                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1816                         break;
1817
1818                 case OPT_DEBUG:
1819                         arg = poptGetOptArg(pc);
1820                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1821                         break;
1822
1823                 case OPT_USERMAP:
1824                         if (usermap) {
1825                                 if (usermap_via_chown) {
1826                                         snprintf(err_buf, sizeof err_buf,
1827                                             "--usermap conflicts with prior --chown.\n");
1828                                         return 0;
1829                                 }
1830                                 snprintf(err_buf, sizeof err_buf,
1831                                     "You can only specify --usermap once.\n");
1832                                 return 0;
1833                         }
1834                         usermap = (char *)poptGetOptArg(pc);
1835                         usermap_via_chown = False;
1836                         break;
1837
1838                 case OPT_GROUPMAP:
1839                         if (groupmap) {
1840                                 if (groupmap_via_chown) {
1841                                         snprintf(err_buf, sizeof err_buf,
1842                                             "--groupmap conflicts with prior --chown.\n");
1843                                         return 0;
1844                                 }
1845                                 snprintf(err_buf, sizeof err_buf,
1846                                     "You can only specify --groupmap once.\n");
1847                                 return 0;
1848                         }
1849                         groupmap = (char *)poptGetOptArg(pc);
1850                         groupmap_via_chown = False;
1851                         break;
1852
1853                 case OPT_CHOWN: {
1854                         const char *chown = poptGetOptArg(pc);
1855                         int len;
1856                         if ((arg = strchr(chown, ':')) != NULL)
1857                                 len = arg++ - chown;
1858                         else
1859                                 len = strlen(chown);
1860                         if (len) {
1861                                 if (usermap) {
1862                                         if (!usermap_via_chown) {
1863                                                 snprintf(err_buf, sizeof err_buf,
1864                                                     "--chown conflicts with prior --usermap.\n");
1865                                                 return 0;
1866                                         }
1867                                         snprintf(err_buf, sizeof err_buf,
1868                                             "You can only specify a user-affecting --chown once.\n");
1869                                         return 0;
1870                                 }
1871                                 if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
1872                                         out_of_memory("parse_arguments");
1873                                 usermap_via_chown = True;
1874                         }
1875                         if (arg && *arg) {
1876                                 if (groupmap) {
1877                                         if (!groupmap_via_chown) {
1878                                                 snprintf(err_buf, sizeof err_buf,
1879                                                     "--chown conflicts with prior --groupmap.\n");
1880                                                 return 0;
1881                                         }
1882                                         snprintf(err_buf, sizeof err_buf,
1883                                             "You can only specify a group-affecting --chown once.\n");
1884                                         return 0;
1885                                 }
1886                                 if (asprintf(&groupmap, "*:%s", arg) < 0)
1887                                         out_of_memory("parse_arguments");
1888                                 groupmap_via_chown = True;
1889                         }
1890                         break;
1891                 }
1892
1893                 case OPT_HELP:
1894                         usage(FINFO);
1895                         exit_cleanup(0);
1896
1897                 case 'A':
1898 #ifdef SUPPORT_ACLS
1899                         preserve_acls = 1;
1900                         preserve_perms = 1;
1901                         break;
1902 #else
1903                         /* FIXME: this should probably be ignored with a
1904                          * warning and then countermeasures taken to
1905                          * restrict group and other access in the presence
1906                          * of any more restrictive ACLs, but this is safe
1907                          * for now */
1908                         snprintf(err_buf,sizeof(err_buf),
1909                                  "ACLs are not supported on this %s\n",
1910                                  am_server ? "server" : "client");
1911                         return 0;
1912 #endif
1913
1914                 case 'X':
1915 #ifdef SUPPORT_XATTRS
1916                         preserve_xattrs++;
1917                         break;
1918 #else
1919                         snprintf(err_buf,sizeof(err_buf),
1920                                  "extended attributes are not supported on this %s\n",
1921                                  am_server ? "server" : "client");
1922                         return 0;
1923 #endif
1924
1925                 default:
1926                         /* A large opt value means that set_refuse_options()
1927                          * turned this option off. */
1928                         if (opt >= OPT_REFUSED_BASE) {
1929                                 create_refuse_error(opt);
1930                                 return 0;
1931                         }
1932                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1933                                  am_server ? "on remote machine: " : "",
1934                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1935                                  poptStrerror(opt));
1936                         return 0;
1937                 }
1938         }
1939
1940         if (protect_args < 0) {
1941                 if (am_server)
1942                         protect_args = 0;
1943                 else if ((arg = getenv("RSYNC_PROTECT_ARGS")) != NULL && *arg)
1944                         protect_args = atoi(arg) ? 1 : 0;
1945                 else {
1946 #ifdef RSYNC_USE_PROTECTED_ARGS
1947                         protect_args = 1;
1948 #else
1949                         protect_args = 0;
1950 #endif
1951                 }
1952         }
1953
1954         if (checksum_choice && strcasecmp(checksum_choice, "auto") != 0 && strcasecmp(checksum_choice, "auto,auto") != 0) {
1955                 /* Call this early to verify the args and figure out if we need to force
1956                  * --whole-file. Note that the parse function will get called again later,
1957                  * just in case an "auto" choice needs to know the protocol_version. */
1958                 parse_checksum_choice(0);
1959         } else
1960                 checksum_choice = NULL;
1961
1962         if (human_readable > 1 && argc == 2 && !am_server) {
1963                 /* Allow the old meaning of 'h' (--help) on its own. */
1964                 usage(FINFO);
1965                 exit_cleanup(0);
1966         }
1967
1968         if (!compress_choice && do_compression > 1)
1969                 compress_choice = "zlibx";
1970         if (compress_choice && strcasecmp(compress_choice, "auto") != 0)
1971                 parse_compress_choice(0); /* Twiddles do_compression and can possibly NULL-out compress_choice. */
1972         else
1973                 compress_choice = NULL;
1974
1975         if (do_compression || def_compress_level != NOT_SPECIFIED) {
1976                 if (def_compress_level == NOT_SPECIFIED)
1977                         def_compress_level = Z_DEFAULT_COMPRESSION;
1978                 else if (def_compress_level < Z_DEFAULT_COMPRESSION || def_compress_level > Z_BEST_COMPRESSION) {
1979                         snprintf(err_buf, sizeof err_buf, "--compress-level value is invalid: %d\n",
1980                                  def_compress_level);
1981                         return 0;
1982                 } else if (def_compress_level == Z_NO_COMPRESSION) {
1983                         do_compression = 0;
1984                         compress_choice = NULL;
1985                 } else if (!do_compression)
1986                         do_compression = CPRES_ZLIB;
1987                 if (do_compression && refused_compress) {
1988                         create_refuse_error(refused_compress);
1989                         return 0;
1990                 }
1991         }
1992
1993 #ifdef HAVE_SETVBUF
1994         if (outbuf_mode && !am_server) {
1995                 int mode = *(uchar *)outbuf_mode;
1996                 if (islower(mode))
1997                         mode = toupper(mode);
1998                 fflush(stdout); /* Just in case... */
1999                 switch (mode) {
2000                 case 'N': /* None */
2001                 case 'U': /* Unbuffered */
2002                         mode = _IONBF;
2003                         break;
2004                 case 'L': /* Line */
2005                         mode = _IOLBF;
2006                         break;
2007                 case 'B': /* Block */
2008                 case 'F': /* Full */
2009                         mode = _IOFBF;
2010                         break;
2011                 default:
2012                         snprintf(err_buf, sizeof err_buf,
2013                                 "Invalid --outbuf setting -- specify N, L, or B.\n");
2014                         return 0;
2015                 }
2016                 setvbuf(stdout, (char *)NULL, mode, 0);
2017         }
2018
2019         if (msgs2stderr) {
2020                 /* Make stderr line buffered for better sharing of the stream. */
2021                 fflush(stderr); /* Just in case... */
2022                 setvbuf(stderr, (char *)NULL, _IOLBF, 0);
2023         }
2024 #endif
2025
2026         set_output_verbosity(verbose, DEFAULT_PRIORITY);
2027
2028         if (do_stats) {
2029                 parse_output_words(info_words, info_levels,
2030                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
2031         }
2032
2033 #ifdef ICONV_OPTION
2034         if (iconv_opt && protect_args != 2) {
2035                 if (!am_server && strcmp(iconv_opt, "-") == 0)
2036                         iconv_opt = NULL;
2037                 else
2038                         need_unsorted_flist = 1;
2039         }
2040         if (refused_no_iconv && !iconv_opt) {
2041                 create_refuse_error(refused_no_iconv);
2042                 return 0;
2043         }
2044 #endif
2045
2046         if (fuzzy_basis > 1)
2047                 fuzzy_basis = basis_dir_cnt + 1;
2048
2049         /* Don't let the client reset protect_args if it was already processed */
2050         if (orig_protect_args == 2 && am_server)
2051                 protect_args = orig_protect_args;
2052
2053         if (protect_args == 1 && am_server)
2054                 return 1;
2055
2056         *argv_p = argv = poptGetArgs(pc);
2057         *argc_p = argc = count_args(argv);
2058
2059 #ifndef SUPPORT_LINKS
2060         if (preserve_links && !am_sender) {
2061                 snprintf(err_buf, sizeof err_buf,
2062                          "symlinks are not supported on this %s\n",
2063                          am_server ? "server" : "client");
2064                 return 0;
2065         }
2066 #endif
2067
2068 #ifndef SUPPORT_HARD_LINKS
2069         if (preserve_hard_links) {
2070                 snprintf(err_buf, sizeof err_buf,
2071                          "hard links are not supported on this %s\n",
2072                          am_server ? "server" : "client");
2073                 return 0;
2074         }
2075 #endif
2076
2077 #ifdef SUPPORT_XATTRS
2078         if (am_root < 0 && preserve_xattrs > 1) {
2079                 snprintf(err_buf, sizeof err_buf,
2080                          "--fake-super conflicts with -XX\n");
2081                 return 0;
2082         }
2083 #else
2084         if (am_root < 0) {
2085                 snprintf(err_buf, sizeof err_buf,
2086                          "--fake-super requires an rsync with extended attributes enabled\n");
2087                 return 0;
2088         }
2089 #endif
2090
2091         if (block_size) {
2092                 /* We may not know the real protocol_version at this point if this is the client
2093                  * option parsing, but we still want to check it so that the client can specify
2094                  * a --protocol=29 option with a larger block size. */
2095                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
2096
2097                 if (block_size > max_blength) {
2098                         snprintf(err_buf, sizeof err_buf,
2099                                  "--block-size=%lu is too large (max: %u)\n", block_size, max_blength);
2100                         return 0;
2101                 }
2102         }
2103
2104         if (write_batch && read_batch) {
2105                 snprintf(err_buf, sizeof err_buf,
2106                         "--write-batch and --read-batch can not be used together\n");
2107                 return 0;
2108         }
2109         if (write_batch > 0 || read_batch) {
2110                 if (am_server) {
2111                         rprintf(FINFO,
2112                                 "ignoring --%s-batch option sent to server\n",
2113                                 write_batch ? "write" : "read");
2114                         /* We don't actually exit_cleanup(), so that we can
2115                          * still service older version clients that still send
2116                          * batch args to server. */
2117                         read_batch = write_batch = 0;
2118                         batch_name = NULL;
2119                 } else if (dry_run)
2120                         write_batch = 0;
2121         } else if (write_batch < 0 && dry_run)
2122                 write_batch = 0;
2123         if (read_batch && files_from) {
2124                 snprintf(err_buf, sizeof err_buf,
2125                         "--read-batch cannot be used with --files-from\n");
2126                 return 0;
2127         }
2128         if (read_batch && remove_source_files) {
2129                 snprintf(err_buf, sizeof err_buf,
2130                         "--read-batch cannot be used with --remove-%s-files\n",
2131                         remove_source_files == 1 ? "source" : "sent");
2132                 return 0;
2133         }
2134         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
2135                 snprintf(err_buf, sizeof err_buf,
2136                         "the batch-file name must be %d characters or less.\n",
2137                         MAX_BATCH_NAME_LEN);
2138                 return 0;
2139         }
2140
2141         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
2142                 snprintf(err_buf, sizeof err_buf,
2143                          "the --temp-dir path is WAY too long.\n");
2144                 return 0;
2145         }
2146
2147         if (max_delete < 0 && max_delete != INT_MIN) {
2148                 /* Negative numbers are treated as "no deletions". */
2149                 max_delete = 0;
2150         }
2151
2152         if (compare_dest + copy_dest + link_dest > 1) {
2153                 snprintf(err_buf, sizeof err_buf,
2154                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
2155                 return 0;
2156         }
2157
2158         if (files_from) {
2159                 if (recurse == 1) /* preserve recurse == 2 */
2160                         recurse = 0;
2161                 if (xfer_dirs < 0)
2162                         xfer_dirs = 1;
2163         }
2164
2165         if (argc < 2 && !read_batch && !am_server)
2166                 list_only |= 1;
2167
2168         if (xfer_dirs >= 4) {
2169                 parse_filter_str(&filter_list, "- /*/*", rule_template(0), 0);
2170                 recurse = xfer_dirs = 1;
2171         } else if (recurse)
2172                 xfer_dirs = 1;
2173         else if (xfer_dirs < 0)
2174                 xfer_dirs = list_only ? 1 : 0;
2175
2176         if (relative_paths < 0)
2177                 relative_paths = files_from? 1 : 0;
2178         if (!relative_paths)
2179                 implied_dirs = 0;
2180
2181         if (delete_before + !!delete_during + delete_after > 1) {
2182                 snprintf(err_buf, sizeof err_buf,
2183                         "You may not combine multiple --delete-WHEN options.\n");
2184                 return 0;
2185         }
2186         if (delete_before || delete_during || delete_after)
2187                 delete_mode = 1;
2188         else if (delete_mode || delete_excluded) {
2189                 /* Only choose now between before & during if one is refused. */
2190                 if (refused_delete_before) {
2191                         if (!refused_delete_during)
2192                                 delete_during = 1;
2193                         else {
2194                                 create_refuse_error(refused_delete_before);
2195                                 return 0;
2196                         }
2197                 } else if (refused_delete_during)
2198                         delete_before = 1;
2199                 delete_mode = 1;
2200         }
2201         if (!xfer_dirs && delete_mode) {
2202                 snprintf(err_buf, sizeof err_buf,
2203                         "--delete does not work without --recursive (-r) or --dirs (-d).\n");
2204                 return 0;
2205         }
2206
2207         if (missing_args == 3) /* simplify if both options were specified */
2208                 missing_args = 2;
2209         if (refused_delete && (delete_mode || missing_args == 2)) {
2210                 create_refuse_error(refused_delete);
2211                 return 0;
2212         }
2213
2214         if (remove_source_files) {
2215                 /* We only want to infer this refusal of --remove-source-files
2216                  * via the refusal of "delete", not any of the "delete-FOO"
2217                  * options. */
2218                 if (refused_delete && am_sender) {
2219                         create_refuse_error(refused_delete);
2220                         return 0;
2221                 }
2222                 need_messages_from_generator = 1;
2223         }
2224
2225         if (munge_symlinks && !am_daemon) {
2226                 STRUCT_STAT st;
2227                 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
2228                 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
2229                 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
2230                         rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
2231                                 prefix);
2232                         exit_cleanup(RERR_UNSUPPORTED);
2233                 }
2234         }
2235
2236         if (sanitize_paths) {
2237                 int i;
2238                 for (i = argc; i-- > 0; )
2239                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
2240                 if (tmpdir)
2241                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
2242                 if (backup_dir)
2243                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
2244         }
2245         if (daemon_filter_list.head && !am_sender) {
2246                 filter_rule_list *elp = &daemon_filter_list;
2247                 if (tmpdir) {
2248                         char *dir;
2249                         if (!*tmpdir)
2250                                 goto options_rejected;
2251                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
2252                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2253                         if (check_filter(elp, FLOG, dir, 1) < 0)
2254                                 goto options_rejected;
2255                 }
2256                 if (backup_dir) {
2257                         char *dir;
2258                         if (!*backup_dir)
2259                                 goto options_rejected;
2260                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
2261                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2262                         if (check_filter(elp, FLOG, dir, 1) < 0)
2263                                 goto options_rejected;
2264                 }
2265         }
2266
2267         if (!backup_suffix)
2268                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
2269         backup_suffix_len = strlen(backup_suffix);
2270         if (strchr(backup_suffix, '/') != NULL) {
2271                 snprintf(err_buf, sizeof err_buf,
2272                         "--suffix cannot contain slashes: %s\n",
2273                         backup_suffix);
2274                 return 0;
2275         }
2276         if (backup_dir) {
2277                 size_t len;
2278                 while (*backup_dir == '.' && backup_dir[1] == '/')
2279                         backup_dir += 2;
2280                 if (*backup_dir == '.' && backup_dir[1] == '\0')
2281                         backup_dir++;
2282                 len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
2283                 if (len > sizeof backup_dir_buf - 128) {
2284                         snprintf(err_buf, sizeof err_buf,
2285                                 "the --backup-dir path is WAY too long.\n");
2286                         return 0;
2287                 }
2288                 backup_dir_len = (int)len;
2289                 if (!backup_dir_len) {
2290                         backup_dir_len = -1;
2291                         backup_dir = NULL;
2292                 } else if (backup_dir_buf[backup_dir_len - 1] != '/') {
2293                         backup_dir_buf[backup_dir_len++] = '/';
2294                         backup_dir_buf[backup_dir_len] = '\0';
2295                 }
2296                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
2297         }
2298         if (backup_dir) {
2299                 /* No need for a suffix or a protect rule. */
2300         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
2301                 snprintf(err_buf, sizeof err_buf,
2302                         "--suffix cannot be empty %s\n", backup_dir_len < 0
2303                         ? "when --backup-dir is the same as the dest dir"
2304                         : "without a --backup-dir");
2305                 return 0;
2306         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
2307                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
2308                         "P *%s", backup_suffix);
2309                 parse_filter_str(&filter_list, backup_dir_buf, rule_template(0), 0);
2310         }
2311
2312         if (preserve_times) {
2313                 preserve_times = PRESERVE_FILE_TIMES;
2314                 if (!omit_dir_times)
2315                         preserve_times |= PRESERVE_DIR_TIMES;
2316 #ifdef CAN_SET_SYMLINK_TIMES
2317                 if (!omit_link_times)
2318                         preserve_times |= PRESERVE_LINK_TIMES;
2319 #endif
2320         }
2321
2322         if (make_backups && !backup_dir) {
2323                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
2324                 preserve_times &= ~PRESERVE_DIR_TIMES;
2325         }
2326
2327         if (stdout_format) {
2328                 if (am_server && log_format_has(stdout_format, 'I'))
2329                         stdout_format_has_i = 2;
2330                 else if (log_format_has(stdout_format, 'i'))
2331                         stdout_format_has_i = itemize_changes | 1;
2332                 if (!log_format_has(stdout_format, 'b')
2333                  && !log_format_has(stdout_format, 'c')
2334                  && !log_format_has(stdout_format, 'C'))
2335                         log_before_transfer = !am_server;
2336         } else if (itemize_changes) {
2337                 stdout_format = "%i %n%L";
2338                 stdout_format_has_i = itemize_changes;
2339                 log_before_transfer = !am_server;
2340         }
2341
2342         if (do_progress && !am_server) {
2343                 if (!log_before_transfer && INFO_EQ(NAME, 0))
2344                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
2345                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
2346         }
2347
2348         if (dry_run)
2349                 do_xfers = 0;
2350
2351         set_io_timeout(io_timeout);
2352
2353         if (INFO_GTE(NAME, 1) && !stdout_format) {
2354                 stdout_format = "%n%L";
2355                 log_before_transfer = !am_server;
2356         }
2357         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
2358                 stdout_format_has_o_or_i = 1;
2359
2360         if (logfile_name && !am_daemon) {
2361                 if (!logfile_format) {
2362                         logfile_format = "%i %n%L";
2363                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
2364                 } else {
2365                         if (log_format_has(logfile_format, 'i'))
2366                                 logfile_format_has_i = 1;
2367                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
2368                                 logfile_format_has_o_or_i = 1;
2369                 }
2370                 log_init(0);
2371         } else if (!am_daemon)
2372                 logfile_format = NULL;
2373
2374         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
2375                 bwlimit = daemon_bwlimit;
2376         if (bwlimit) {
2377                 bwlimit_writemax = (size_t)bwlimit * 128;
2378                 if (bwlimit_writemax < 512)
2379                         bwlimit_writemax = 512;
2380         }
2381
2382         if (append_mode) {
2383                 if (whole_file > 0) {
2384                         snprintf(err_buf, sizeof err_buf,
2385                                  "--append cannot be used with --whole-file\n");
2386                         return 0;
2387                 }
2388                 if (refused_inplace) {
2389                         create_refuse_error(refused_inplace);
2390                         return 0;
2391                 }
2392                 inplace = 1;
2393         }
2394
2395         if (write_devices) {
2396                 if (refused_inplace) {
2397                         create_refuse_error(refused_inplace);
2398                         return 0;
2399                 }
2400                 inplace = 1;
2401         }
2402
2403         if (delay_updates && !partial_dir)
2404                 partial_dir = tmp_partialdir;
2405
2406         if (inplace) {
2407 #ifdef HAVE_FTRUNCATE
2408                 if (partial_dir) {
2409                         snprintf(err_buf, sizeof err_buf,
2410                                  "--%s cannot be used with --%s\n",
2411                                  append_mode ? "append" : "inplace",
2412                                  delay_updates ? "delay-updates" : "partial-dir");
2413                         return 0;
2414                 }
2415                 /* --inplace implies --partial for refusal purposes, but we
2416                  * clear the keep_partial flag for internal logic purposes. */
2417                 if (refused_partial) {
2418                         create_refuse_error(refused_partial);
2419                         return 0;
2420                 }
2421                 keep_partial = 0;
2422 #else
2423                 snprintf(err_buf, sizeof err_buf,
2424                          "--%s is not supported on this %s\n",
2425                          append_mode ? "append" : "inplace",
2426                          am_server ? "server" : "client");
2427                 return 0;
2428 #endif
2429         } else {
2430                 if (keep_partial && !partial_dir && !am_server) {
2431                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2432                                 partial_dir = strdup(arg);
2433                 }
2434                 if (partial_dir) {
2435                         if (*partial_dir)
2436                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2437                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2438                                 partial_dir = NULL;
2439                         if (!partial_dir && refused_partial) {
2440                                 create_refuse_error(refused_partial);
2441                                 return 0;
2442                         }
2443                         keep_partial = 1;
2444                 }
2445         }
2446
2447         if (files_from) {
2448                 char *h, *p;
2449                 int q;
2450                 if (argc > 2 || (!am_daemon && !am_server && argc == 1)) {
2451                         usage(FERROR);
2452                         exit_cleanup(RERR_SYNTAX);
2453                 }
2454                 if (strcmp(files_from, "-") == 0) {
2455                         filesfrom_fd = 0;
2456                         if (am_server)
2457                                 filesfrom_host = ""; /* reading from socket */
2458                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2459                         if (am_server) {
2460                                 snprintf(err_buf, sizeof err_buf,
2461                                         "The --files-from sent to the server cannot specify a host.\n");
2462                                 return 0;
2463                         }
2464                         files_from = p;
2465                         filesfrom_host = h;
2466                         if (strcmp(files_from, "-") == 0) {
2467                                 snprintf(err_buf, sizeof err_buf,
2468                                         "Invalid --files-from remote filename\n");
2469                                 return 0;
2470                         }
2471                 } else {
2472                         if (sanitize_paths)
2473                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2474                         if (daemon_filter_list.head) {
2475                                 char *dir;
2476                                 if (!*files_from)
2477                                         goto options_rejected;
2478                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2479                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2480                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2481                                         goto options_rejected;
2482                         }
2483                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2484                         if (filesfrom_fd < 0) {
2485                                 snprintf(err_buf, sizeof err_buf,
2486                                         "failed to open files-from file %s: %s\n",
2487                                         files_from, strerror(errno));
2488                                 return 0;
2489                         }
2490                 }
2491         }
2492
2493         am_starting_up = 0;
2494
2495         return 1;
2496
2497   options_rejected:
2498         snprintf(err_buf, sizeof err_buf,
2499                 "Your options have been rejected by the server.\n");
2500         return 0;
2501 }
2502
2503
2504 /**
2505  * Construct a filtered list of options to pass through from the
2506  * client to the server.
2507  *
2508  * This involves setting options that will tell the server how to
2509  * behave, and also filtering out options that are processed only
2510  * locally.
2511  **/
2512 void server_options(char **args, int *argc_p)
2513 {
2514         static char argstr[64];
2515         int ac = *argc_p;
2516         uchar where;
2517         char *arg;
2518         int i, x;
2519
2520         /* This should always remain first on the server's command-line. */
2521         args[ac++] = "--server";
2522
2523         if (daemon_over_rsh > 0) {
2524                 args[ac++] = "--daemon";
2525                 *argc_p = ac;
2526                 /* if we're passing --daemon, we're done */
2527                 return;
2528         }
2529
2530         if (!am_sender)
2531                 args[ac++] = "--sender";
2532
2533         x = 1;
2534         argstr[0] = '-';
2535
2536         if (protect_args)
2537                 argstr[x++] = 's';
2538
2539         for (i = 0; i < verbose; i++)
2540                 argstr[x++] = 'v';
2541
2542         /* the -q option is intentionally left out */
2543         if (make_backups)
2544                 argstr[x++] = 'b';
2545         if (update_only)
2546                 argstr[x++] = 'u';
2547         if (!do_xfers) /* Note: NOT "dry_run"! */
2548                 argstr[x++] = 'n';
2549         if (preserve_links)
2550                 argstr[x++] = 'l';
2551         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2552          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2553                 argstr[x++] = 'd';
2554         if (am_sender) {
2555                 if (keep_dirlinks)
2556                         argstr[x++] = 'K';
2557                 if (prune_empty_dirs)
2558                         argstr[x++] = 'm';
2559                 if (omit_dir_times)
2560                         argstr[x++] = 'O';
2561                 if (omit_link_times)
2562                         argstr[x++] = 'J';
2563                 if (fuzzy_basis) {
2564                         argstr[x++] = 'y';
2565                         if (fuzzy_basis > 1)
2566                                 argstr[x++] = 'y';
2567                 }
2568         } else {
2569                 if (copy_links)
2570                         argstr[x++] = 'L';
2571                 if (copy_dirlinks)
2572                         argstr[x++] = 'k';
2573         }
2574
2575         if (whole_file > 0)
2576                 argstr[x++] = 'W';
2577         /* We don't need to send --no-whole-file, because it's the
2578          * default for remote transfers, and in any case old versions
2579          * of rsync will not understand it. */
2580
2581         if (preserve_hard_links) {
2582                 argstr[x++] = 'H';
2583                 if (preserve_hard_links > 1)
2584                         argstr[x++] = 'H';
2585         }
2586         if (preserve_uid)
2587                 argstr[x++] = 'o';
2588         if (preserve_gid)
2589                 argstr[x++] = 'g';
2590         if (preserve_devices) /* ignore preserve_specials here */
2591                 argstr[x++] = 'D';
2592         if (preserve_times)
2593                 argstr[x++] = 't';
2594         if (preserve_atimes) {
2595                 argstr[x++] = 'U';
2596                 if (preserve_atimes > 1)
2597                         argstr[x++] = 'U';
2598         }
2599         if (preserve_perms)
2600                 argstr[x++] = 'p';
2601         else if (preserve_executability && am_sender)
2602                 argstr[x++] = 'E';
2603 #ifdef SUPPORT_ACLS
2604         if (preserve_acls)
2605                 argstr[x++] = 'A';
2606 #endif
2607 #ifdef SUPPORT_XATTRS
2608         if (preserve_xattrs) {
2609                 argstr[x++] = 'X';
2610                 if (preserve_xattrs > 1)
2611                         argstr[x++] = 'X';
2612         }
2613 #endif
2614         if (recurse)
2615                 argstr[x++] = 'r';
2616         if (always_checksum)
2617                 argstr[x++] = 'c';
2618         if (cvs_exclude)
2619                 argstr[x++] = 'C';
2620         if (ignore_times)
2621                 argstr[x++] = 'I';
2622         if (relative_paths)
2623                 argstr[x++] = 'R';
2624         if (one_file_system) {
2625                 argstr[x++] = 'x';
2626                 if (one_file_system > 1)
2627                         argstr[x++] = 'x';
2628         }
2629         if (sparse_files)
2630                 argstr[x++] = 'S';
2631         if (do_compression == CPRES_ZLIB)
2632                 argstr[x++] = 'z';
2633
2634         set_allow_inc_recurse();
2635
2636         /* We don't really know the actual protocol_version at this point,
2637          * but checking the pre-negotiated value allows the user to use a
2638          * --protocol=29 override to avoid the use of this -eFLAGS opt. */
2639         if (protocol_version >= 30) {
2640                 /* Use "eFlags" alias so that cull_options doesn't think that these are no-arg option letters. */
2641 #define eFlags argstr
2642                 /* We make use of the -e option to let the server know about
2643                  * any pre-release protocol version && some behavior flags. */
2644                 eFlags[x++] = 'e';
2645 #if SUBPROTOCOL_VERSION != 0
2646                 if (protocol_version == PROTOCOL_VERSION) {
2647                         x += snprintf(argstr+x, sizeof argstr - x,
2648                                       "%d.%d",
2649                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2650                 } else
2651 #endif
2652                         eFlags[x++] = '.';
2653                 if (allow_inc_recurse)
2654                         eFlags[x++] = 'i';
2655 #ifdef CAN_SET_SYMLINK_TIMES
2656                 eFlags[x++] = 'L'; /* symlink time-setting support */
2657 #endif
2658 #ifdef ICONV_OPTION
2659                 eFlags[x++] = 's'; /* symlink iconv translation support */
2660 #endif
2661                 eFlags[x++] = 'f'; /* flist I/O-error safety support */
2662                 eFlags[x++] = 'x'; /* xattr hardlink optimization not desired */
2663                 eFlags[x++] = 'C'; /* support checksum seed order fix */
2664                 eFlags[x++] = 'I'; /* support inplace_partial behavior */
2665                 eFlags[x++] = 'v'; /* use varint for flist & compat flags; negotiate checksum */
2666                 /* NOTE: Avoid using 'V' -- it was the high bit of a write_byte() that became write_varint(). */
2667 #undef eFlags
2668         }
2669
2670         if (x >= (int)sizeof argstr) { /* Not possible... */
2671                 rprintf(FERROR, "argstr overflow in server_options().\n");
2672                 exit_cleanup(RERR_MALLOC);
2673         }
2674
2675         argstr[x] = '\0';
2676
2677         if (x > 1)
2678                 args[ac++] = argstr;
2679
2680 #ifdef ICONV_OPTION
2681         if (iconv_opt) {
2682                 char *set = strchr(iconv_opt, ',');
2683                 if (set)
2684                         set++;
2685                 else
2686                         set = iconv_opt;
2687                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2688                         goto oom;
2689                 args[ac++] = arg;
2690         }
2691 #endif
2692
2693         if (protect_args && !local_server) /* unprotected args stop here */
2694                 args[ac++] = NULL;
2695
2696         if (list_only > 1)
2697                 args[ac++] = "--list-only";
2698
2699         /* This makes sure that the remote rsync can handle deleting with -d
2700          * sans -r because the --no-r option was added at the same time. */
2701         if (xfer_dirs && !recurse && delete_mode && am_sender)
2702                 args[ac++] = "--no-r";
2703
2704         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2705                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2706                         goto oom;
2707                 args[ac++] = arg;
2708         }
2709
2710         if (preserve_devices) {
2711                 /* Note: sending "--devices" would not be backward-compatible. */
2712                 if (!preserve_specials)
2713                         args[ac++] = "--no-specials"; /* -D is already set. */
2714         } else if (preserve_specials)
2715                 args[ac++] = "--specials";
2716
2717         /* The server side doesn't use our log-format, but in certain
2718          * circumstances they need to know a little about the option. */
2719         if (stdout_format && am_sender) {
2720                 /* Use --log-format, not --out-format, for compatibility. */
2721                 if (stdout_format_has_i > 1)
2722                         args[ac++] = "--log-format=%i%I";
2723                 else if (stdout_format_has_i)
2724                         args[ac++] = "--log-format=%i";
2725                 else if (stdout_format_has_o_or_i)
2726                         args[ac++] = "--log-format=%o";
2727                 else if (!verbose)
2728                         args[ac++] = "--log-format=X";
2729         }
2730
2731         if (block_size) {
2732                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2733                         goto oom;
2734                 args[ac++] = arg;
2735         }
2736
2737         if (io_timeout) {
2738                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2739                         goto oom;
2740                 args[ac++] = arg;
2741         }
2742
2743         if (bwlimit) {
2744                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2745                         goto oom;
2746                 args[ac++] = arg;
2747         }
2748
2749         if (backup_dir) {
2750                 args[ac++] = "--backup-dir";
2751                 args[ac++] = backup_dir;
2752         }
2753
2754         /* Only send --suffix if it specifies a non-default value. */
2755         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2756                 /* We use the following syntax to avoid weirdness with '~'. */
2757                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2758                         goto oom;
2759                 args[ac++] = arg;
2760         }
2761
2762         if (checksum_choice) {
2763                 if (asprintf(&arg, "--checksum-choice=%s", checksum_choice) < 0)
2764                         goto oom;
2765                 args[ac++] = arg;
2766         }
2767
2768         if (do_compression == CPRES_ZLIBX)
2769                 args[ac++] = "--new-compress";
2770         else if (compress_choice && do_compression == CPRES_ZLIB)
2771                 args[ac++] = "--old-compress";
2772         else if (compress_choice) {
2773                 if (asprintf(&arg, "--compress-choice=%s", compress_choice) < 0)
2774                         goto oom;
2775                 args[ac++] = arg;
2776         }
2777
2778         if (am_sender) {
2779                 if (max_delete > 0) {
2780                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2781                                 goto oom;
2782                         args[ac++] = arg;
2783                 } else if (max_delete == 0)
2784                         args[ac++] = "--max-delete=-1";
2785                 if (min_size >= 0) {
2786                         args[ac++] = "--min-size";
2787                         args[ac++] = min_size_arg;
2788                 }
2789                 if (max_size >= 0) {
2790                         args[ac++] = "--max-size";
2791                         args[ac++] = max_size_arg;
2792                 }
2793                 if (delete_before)
2794                         args[ac++] = "--delete-before";
2795                 else if (delete_during == 2)
2796                         args[ac++] = "--delete-delay";
2797                 else if (delete_during)
2798                         args[ac++] = "--delete-during";
2799                 else if (delete_after)
2800                         args[ac++] = "--delete-after";
2801                 else if (delete_mode && !delete_excluded)
2802                         args[ac++] = "--delete";
2803                 if (delete_excluded)
2804                         args[ac++] = "--delete-excluded";
2805                 if (force_delete)
2806                         args[ac++] = "--force";
2807                 if (write_batch < 0)
2808                         args[ac++] = "--only-write-batch=X";
2809                 if (am_root > 1)
2810                         args[ac++] = "--super";
2811                 if (size_only)
2812                         args[ac++] = "--size-only";
2813                 if (do_stats)
2814                         args[ac++] = "--stats";
2815         } else {
2816                 if (skip_compress) {
2817                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2818                                 goto oom;
2819                         args[ac++] = arg;
2820                 }
2821         }
2822
2823         /* --delete-missing-args needs the cooperation of both sides, but
2824          * the sender can handle --ignore-missing-args by itself. */
2825         if (missing_args == 2)
2826                 args[ac++] = "--delete-missing-args";
2827         else if (missing_args == 1 && !am_sender)
2828                 args[ac++] = "--ignore-missing-args";
2829
2830         if (modify_window_set && am_sender) {
2831                 char *fmt = modify_window < 0 ? "-@%d" : "--modify-window=%d";
2832                 if (asprintf(&arg, fmt, modify_window) < 0)
2833                         goto oom;
2834                 args[ac++] = arg;
2835         }
2836
2837         if (checksum_seed) {
2838                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2839                         goto oom;
2840                 args[ac++] = arg;
2841         }
2842
2843         if (partial_dir && am_sender) {
2844                 if (partial_dir != tmp_partialdir) {
2845                         args[ac++] = "--partial-dir";
2846                         args[ac++] = partial_dir;
2847                 }
2848                 if (delay_updates)
2849                         args[ac++] = "--delay-updates";
2850         } else if (keep_partial && am_sender)
2851                 args[ac++] = "--partial";
2852
2853         if (ignore_errors)
2854                 args[ac++] = "--ignore-errors";
2855
2856         if (copy_unsafe_links)
2857                 args[ac++] = "--copy-unsafe-links";
2858
2859         if (safe_symlinks)
2860                 args[ac++] = "--safe-links";
2861
2862         if (numeric_ids)
2863                 args[ac++] = "--numeric-ids";
2864
2865         if (use_qsort)
2866                 args[ac++] = "--use-qsort";
2867
2868         if (am_sender) {
2869                 if (usermap) {
2870                         if (asprintf(&arg, "--usermap=%s", usermap) < 0)
2871                                 goto oom;
2872                         args[ac++] = arg;
2873                 }
2874
2875                 if (groupmap) {
2876                         if (asprintf(&arg, "--groupmap=%s", groupmap) < 0)
2877                                 goto oom;
2878                         args[ac++] = arg;
2879                 }
2880
2881                 if (ignore_existing)
2882                         args[ac++] = "--ignore-existing";
2883
2884                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2885                 if (ignore_non_existing)
2886                         args[ac++] = "--existing";
2887
2888                 if (tmpdir) {
2889                         args[ac++] = "--temp-dir";
2890                         args[ac++] = tmpdir;
2891                 }
2892
2893                 if (basis_dir[0]) {
2894                         /* the server only needs this option if it is not the sender,
2895                          *   and it may be an older version that doesn't know this
2896                          *   option, so don't send it if client is the sender.
2897                          */
2898                         for (i = 0; i < basis_dir_cnt; i++) {
2899                                 args[ac++] = dest_option;
2900                                 args[ac++] = basis_dir[i];
2901                         }
2902                 }
2903         }
2904
2905         /* What flags do we need to send to the other side? */
2906         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2907         arg = make_output_option(info_words, info_levels, where);
2908         if (arg)
2909                 args[ac++] = arg;
2910
2911         if (append_mode) {
2912                 if (append_mode > 1)
2913                         args[ac++] = "--append";
2914                 args[ac++] = "--append";
2915         } else if (inplace)
2916                 args[ac++] = "--inplace";
2917
2918         if (files_from && (!am_sender || filesfrom_host)) {
2919                 if (filesfrom_host) {
2920                         args[ac++] = "--files-from";
2921                         args[ac++] = files_from;
2922                         if (eol_nulls)
2923                                 args[ac++] = "--from0";
2924                 } else {
2925                         args[ac++] = "--files-from=-";
2926                         args[ac++] = "--from0";
2927                 }
2928                 if (!relative_paths)
2929                         args[ac++] = "--no-relative";
2930         }
2931         /* It's OK that this checks the upper-bound of the protocol_version. */
2932         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2933                 args[ac++] = "--no-implied-dirs";
2934
2935         if (write_devices && am_sender)
2936                 args[ac++] = "--write-devices";
2937
2938         if (remove_source_files == 1)
2939                 args[ac++] = "--remove-source-files";
2940         else if (remove_source_files)
2941                 args[ac++] = "--remove-sent-files";
2942
2943         if (preallocate_files && am_sender)
2944                 args[ac++] = "--preallocate";
2945
2946         if (open_noatime && preserve_atimes <= 1)
2947                 args[ac++] = "--open-noatime";
2948
2949         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2950                 rprintf(FERROR, "argc overflow in server_options().\n");
2951                 exit_cleanup(RERR_MALLOC);
2952         }
2953
2954         if (remote_option_cnt) {
2955                 int j;
2956                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2957                         rprintf(FERROR, "too many remote options specified.\n");
2958                         exit_cleanup(RERR_SYNTAX);
2959                 }
2960                 for (j = 1; j <= remote_option_cnt; j++)
2961                         args[ac++] = (char*)remote_options[j];
2962         }
2963
2964         *argc_p = ac;
2965         return;
2966
2967     oom:
2968         out_of_memory("server_options");
2969 }
2970
2971 /* If str points to a valid hostspec, return allocated memory containing the
2972  * [USER@]HOST part of the string, and set the path_start_ptr to the part of
2973  * the string after the host part.  Otherwise, return NULL.  If port_ptr is
2974  * non-NULL, we must be parsing an rsync:// URL hostname, and we will set
2975  * *port_ptr if a port number is found.  Note that IPv6 IPs will have their
2976  * (required for parsing) [ and ] chars elided from the returned string. */
2977 static char *parse_hostspec(char *str, char **path_start_ptr, int *port_ptr)
2978 {
2979         char *s, *host_start = str;
2980         int hostlen = 0, userlen = 0;
2981         char *ret;
2982
2983         for (s = str; ; s++) {
2984                 if (!*s) {
2985                         /* It is only OK if we run out of string with rsync:// */
2986                         if (!port_ptr)
2987                                 return NULL;
2988                         if (!hostlen)
2989                                 hostlen = s - host_start;
2990                         break;
2991                 }
2992                 if (*s == ':' || *s == '/') {
2993                         if (!hostlen)
2994                                 hostlen = s - host_start;
2995                         if (*s++ == '/') {
2996                                 if (!port_ptr)
2997                                         return NULL;
2998                         } else if (port_ptr) {
2999                                 *port_ptr = atoi(s);
3000                                 while (isDigit(s)) s++;
3001                                 if (*s && *s++ != '/')
3002                                         return NULL;
3003                         }
3004                         break;
3005                 }
3006                 if (*s == '@') {
3007                         userlen = s - str + 1;
3008                         host_start = s + 1;
3009                 } else if (*s == '[') {
3010                         if (s != host_start++)
3011                                 return NULL;
3012                         while (*s && *s != ']' && *s != '/') s++; /*SHARED ITERATOR*/
3013                         hostlen = s - host_start;
3014                         if (*s != ']' || (s[1] && s[1] != '/' && s[1] != ':') || !hostlen)
3015                                 return NULL;
3016                 }
3017         }
3018
3019         *path_start_ptr = s;
3020         ret = new_array(char, userlen + hostlen + 1);
3021         if (userlen)
3022                 strlcpy(ret, str, userlen + 1);
3023         strlcpy(ret + userlen, host_start, hostlen + 1);
3024         return ret;
3025 }
3026
3027 /* Look for a HOST specification of the form "HOST:PATH", "HOST::PATH", or
3028  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
3029  * memory with the HOST.  If a daemon-accessing spec was specified, the value
3030  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
3031  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
3032  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
3033  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
3034 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
3035 {
3036         char *path;
3037
3038         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
3039                 *host_ptr = parse_hostspec(s + strlen(URL_PREFIX), &path, port_ptr);
3040                 if (*host_ptr) {
3041                         if (!*port_ptr)
3042                                 *port_ptr = -1; /* -1 indicates they want the default */
3043                         return path;
3044                 }
3045         }
3046
3047         *host_ptr = parse_hostspec(s, &path, NULL);
3048         if (!*host_ptr)
3049                 return NULL;
3050
3051         if (*path == ':') {
3052                 if (port_ptr && !*port_ptr)
3053                         *port_ptr = -1;
3054                 return path + 1;
3055         }
3056         if (port_ptr)
3057                 *port_ptr = 0;
3058
3059         return path;
3060 }