options.c

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