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) 2002-2008 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include "itypes.h"
  24 #include <popt.h>
  25 #include "zlib/zlib.h"
  26
  27 extern int module_id;
  28 extern int local_server;
  29 extern int sanitize_paths;
  30 extern int daemon_over_rsh;
  31 extern unsigned int module_dirlen;
  32 extern struct filter_list_struct filter_list;
  33 extern struct filter_list_struct daemon_filter_list;
  34
  35 int make_backups = 0;
  36
  37 /**
  38  * If 1, send the whole file as literal data rather than trying to
  39  * create an incremental diff.
  40  *
  41  * If -1, then look at whether we're local or remote and go by that.
  42  *
  43  * @sa disable_deltas_p()
  44  **/
  45 int whole_file = -1;
  46
  47 int append_mode = 0;
  48 int keep_dirlinks = 0;
  49 int copy_dirlinks = 0;
  50 int copy_links = 0;
  51 int preserve_links = 0;
  52 int preserve_hard_links = 0;
  53 int preserve_acls = 0;
  54 int preserve_xattrs = 0;
  55 int preserve_perms = 0;
  56 int preserve_executability = 0;
  57 int preserve_devices = 0;
  58 int preserve_specials = 0;
  59 int preserve_uid = 0;
  60 int preserve_gid = 0;
  61 int preserve_times = 0;
  62 int update_only = 0;
  63 int cvs_exclude = 0;
  64 int dry_run = 0;
  65 int do_xfers = 1;
  66 int ignore_times = 0;
  67 int delete_mode = 0;
  68 int delete_during = 0;
  69 int delete_before = 0;
  70 int delete_after = 0;
  71 int delete_excluded = 0;
  72 int remove_source_files = 0;
  73 int one_file_system = 0;
  74 int protocol_version = PROTOCOL_VERSION;
  75 int sparse_files = 0;
  76 int do_compression = 0;
  77 int def_compress_level = Z_DEFAULT_COMPRESSION;
  78 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  79 int am_server = 0;
  80 int am_sender = 0;
  81 int am_starting_up = 1;
  82 int relative_paths = -1;
  83 int implied_dirs = 1;
  84 int numeric_ids = 0;
  85 int msgs2stderr = 0;
  86 int allow_8bit_chars = 0;
  87 int force_delete = 0;
  88 int io_timeout = 0;
  89 int prune_empty_dirs = 0;
  90 int use_qsort = 0;
  91 char *files_from = NULL;
  92 int filesfrom_fd = -1;
  93 char *filesfrom_host = NULL;
  94 int eol_nulls = 0;
  95 int protect_args = 0;
  96 int human_readable = 1;
  97 int recurse = 0;
  98 int allow_inc_recurse = 1;
  99 int xfer_dirs = -1;
 100 int am_daemon = 0;
 101 int connect_timeout = 0;
 102 int keep_partial = 0;
 103 int safe_symlinks = 0;
 104 int copy_unsafe_links = 0;
 105 int munge_symlinks = 0;
 106 int size_only = 0;
 107 int daemon_bwlimit = 0;
 108 int bwlimit = 0;
 109 int fuzzy_basis = 0;
 110 size_t bwlimit_writemax = 0;
 111 int ignore_existing = 0;
 112 int ignore_non_existing = 0;
 113 int need_messages_from_generator = 0;
 114 int max_delete = INT_MIN;
 115 OFF_T max_size = 0;
 116 OFF_T min_size = 0;
 117 int ignore_errors = 0;
 118 int modify_window = 0;
 119 int blocking_io = -1;
 120 int checksum_seed = 0;
 121 int inplace = 0;
 122 int delay_updates = 0;
 123 long block_size = 0; /* "long" because popt can't set an int32. */
 124 char number_separator;
 125 char *skip_compress = NULL;
 126 item_list dparam_list = EMPTY_ITEM_LIST;
 127
 128 /** Network address family. **/
 129 int default_af_hint
 130 #ifdef INET6
 131         = 0;            /* Any protocol */
 132 #else
 133         = AF_INET;      /* Must use IPv4 */
 134 # ifdef AF_INET6
 135 #  undef AF_INET6
 136 # endif
 137 # define AF_INET6 AF_INET /* make -6 option a no-op */
 138 #endif
 139
 140 /** Do not go into the background when run as --daemon.  Good
 141  * for debugging and required for running as a service on W32,
 142  * or under Unix process-monitors. **/
 143 int no_detach
 144 #if defined _WIN32 || defined __WIN32__
 145         = 1;
 146 #else
 147         = 0;
 148 #endif
 149
 150 int write_batch = 0;
 151 int read_batch = 0;
 152 int backup_dir_len = 0;
 153 int backup_suffix_len;
 154 unsigned int backup_dir_remainder;
 155
 156 char *backup_suffix = NULL;
 157 char *tmpdir = NULL;
 158 char *partial_dir = NULL;
 159 char *basis_dir[MAX_BASIS_DIRS+1];
 160 char *config_file = NULL;
 161 char *shell_cmd = NULL;
 162 char *logfile_name = NULL;
 163 char *logfile_format = NULL;
 164 char *stdout_format = NULL;
 165 char *password_file = NULL;
 166 char *rsync_path = RSYNC_PATH;
 167 char *backup_dir = NULL;
 168 char backup_dir_buf[MAXPATHLEN];
 169 char *sockopts = NULL;
 170 int rsync_port = 0;
 171 int compare_dest = 0;
 172 int copy_dest = 0;
 173 int link_dest = 0;
 174 int basis_dir_cnt = 0;
 175 char *dest_option = NULL;
 176
 177 static int remote_option_alloc = 0;
 178 int remote_option_cnt = 0;
 179 const char **remote_options = NULL;
 180
 181 int quiet = 0;
 182 int output_motd = 1;
 183 int log_before_transfer = 0;
 184 int stdout_format_has_i = 0;
 185 int stdout_format_has_o_or_i = 0;
 186 int logfile_format_has_i = 0;
 187 int logfile_format_has_o_or_i = 0;
 188 int always_checksum = 0;
 189 int list_only = 0;
 190
 191 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 192 char *batch_name = NULL;
 193
 194 int need_unsorted_flist = 0;
 195 #ifdef ICONV_OPTION
 196 char *iconv_opt = ICONV_OPTION;
 197 #endif
 198
 199 struct chmod_mode_struct *chmod_modes = NULL;
 200
 201 static const char *debug_verbosity[] = {
 202         /*0*/ NULL,
 203         /*1*/ NULL,
 204         /*2*/ "bind,cmd,connect,del,deltasum,dup,filter,flist,iconv",
 205         /*3*/ "acl,backup,deltasum2,del2,exit,filter2,flist2,fuzzy,genr,own,recv,send,time",
 206         /*4*/ "cmd2,deltasum3,del3,exit2,flist3,iconv2,own2,proto,time2",
 207         /*5*/ "chdir,deltasum4,flist4,fuzzy2,hlink",
 208 };
 209
 210 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 211
 212 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 213         /*0*/ NULL,
 214         /*1*/ "copy,del,flist,misc,name,stats,symsafe",
 215         /*2*/ "backup,mount,name2,remove,skip",
 216 };
 217
 218 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 219
 220 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 221
 222 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 223 #define HELP_PRIORITY 1         /* The help output uses this level. */
 224 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 225 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 226
 227 #define W_CLI (1<<0)    /* client side */
 228 #define W_SRV (1<<1)    /* server side */
 229 #define W_SND (1<<2)    /* sending side */
 230 #define W_REC (1<<3)    /* receiving side */
 231
 232 struct output_struct {
 233         char *name;     /* The name of the info/debug flag. */
 234         char *help;     /* The description of the info/debug flag. */
 235         uchar namelen;  /* The length of the name string. */
 236         uchar flag;     /* The flag's value, for consistency check. */
 237         uchar where;    /* Bits indicating where the flag is used. */
 238         uchar priority; /* See *_PRIORITY defines. */
 239 };
 240
 241 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 242
 243 static struct output_struct info_words[COUNT_INFO+1] = {
 244         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 245         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 246         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 247         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 248         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information"),
 249         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 250         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 251         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 252         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 253         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 254         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 255         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 256         { NULL, "--info", 0, 0, 0, 0 }
 257 };
 258
 259 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 260
 261 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 262         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 263         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 264         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 265         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 266         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events"),
 267         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 268         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 269         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 270         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 271         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-2)"),
 272         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 273         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 274         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 275         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 276         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions"),
 277         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv character conversions (levels 1-2)"),
 278         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 279         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 280         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 281         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 282         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 283         { NULL, "--debug", 0, 0, 0, 0 }
 284 };
 285
 286 static int verbose = 0;
 287 static int do_stats = 0;
 288 static int do_progress = 0;
 289 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 290 static int omit_dir_times = 0;
 291 static int F_option_cnt = 0;
 292 static int modify_window_set;
 293 static int itemize_changes = 0;
 294 static int refused_delete, refused_archive_part, refused_compress;
 295 static int refused_partial, refused_progress, refused_delete_before;
 296 static int refused_delete_during;
 297 static int refused_inplace, refused_no_iconv;
 298 static char *max_size_arg, *min_size_arg;
 299 static char tmp_partialdir[] = ".~tmp~";
 300
 301 /** Local address to bind.  As a character string because it's
 302  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 303  * address, or a hostname. **/
 304 char *bind_address;
 305
 306 static void output_item_help(struct output_struct *words);
 307
 308 /* This constructs a string that represents all the options set for either
 309  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 310  * This is used both when conveying the user's options to the server, and
 311  * when the help output wants to tell the user what options are implied. */
 312 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 313 {
 314         char *str = words == info_words ? "--info=" : "--debug=";
 315         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 316         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 317         char *buf;
 318
 319         memset(counts, 0, sizeof counts);
 320
 321         for (j = 0; words[j].name; j++) {
 322                 if (words[j].flag != j) {
 323                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 324                                 words == info_words ? "INFO_" : "DEBUG_",
 325                                 words[j].name, words[j].flag, j);
 326                         exit_cleanup(RERR_UNSUPPORTED);
 327                 }
 328                 if (!(words[j].where & where))
 329                         continue;
 330                 if (words[j].priority == DEFAULT_PRIORITY) {
 331                         /* Implied items don't need to be mentioned. */
 332                         skipped++;
 333                         continue;
 334                 }
 335                 len += len ? 1 : strlen(str);
 336                 len += strlen(words[j].name);
 337                 len += levels[j] == 1 ? 0 : 1;
 338
 339                 if (words[j].priority == HELP_PRIORITY)
 340                         continue; /* no abbreviating for help */
 341
 342                 assert(levels[j] <= MAX_OUT_LEVEL);
 343                 if (++counts[levels[j]] > max) {
 344                         /* Determine which level has the most items. */
 345                         lev = levels[j];
 346                         max = counts[lev];
 347                 }
 348         }
 349
 350         /* Sanity check the COUNT_* define against the length of the table. */
 351         if (j != word_count) {
 352                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 353                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 354                         j, word_count);
 355                 exit_cleanup(RERR_UNSUPPORTED);
 356         }
 357
 358         if (!len)
 359                 return NULL;
 360
 361         len++;
 362         if (!(buf = new_array(char, len)))
 363                 out_of_memory("make_output_option");
 364         pos = 0;
 365
 366         if (skipped || max < 5)
 367                 lev = -1;
 368         else {
 369                 if (lev == 0)
 370                         pos += snprintf(buf, len, "%sNONE", str);
 371                 else if (lev == 1)
 372                         pos += snprintf(buf, len, "%sALL", str);
 373                 else
 374                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 375         }
 376
 377         for (j = 0; words[j].name && pos < len; j++) {
 378                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 379                         continue;
 380                 if (pos)
 381                         buf[pos++] = ',';
 382                 else
 383                         pos += strlcpy(buf+pos, str, len-pos);
 384                 if (pos < len)
 385                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 386                 /* Level 1 is implied by the name alone. */
 387                 if (levels[j] != 1 && pos < len)
 388                         buf[pos++] = '0' + levels[j];
 389         }
 390
 391         buf[pos] = '\0';
 392
 393         return buf;
 394 }
 395
 396 static void parse_output_words(struct output_struct *words, short *levels,
 397                                const char *str, uchar priority)
 398 {
 399         const char *s;
 400         int j, len, lev;
 401
 402         if (!str)
 403                 return;
 404
 405         while (*str) {
 406                 if ((s = strchr(str, ',')) != NULL)
 407                         len = s++ - str;
 408                 else
 409                         len = strlen(str);
 410                 while (len && isDigit(str+len-1))
 411                         len--;
 412                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 413                 if (lev > MAX_OUT_LEVEL)
 414                         lev = MAX_OUT_LEVEL;
 415                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 416                         output_item_help(words);
 417                         exit_cleanup(0);
 418                 }
 419                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 420                         len = lev = 0;
 421                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 422                         len = 0;
 423                 for (j = 0; words[j].name; j++) {
 424                         if (!len
 425                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 426                                 if (priority >= words[j].priority) {
 427                                         words[j].priority = priority;
 428                                         levels[j] = lev;
 429                                 }
 430                                 if (len)
 431                                         break;
 432                         }
 433                 }
 434                 if (len && !words[j].name) {
 435                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 436                                 words[j].help, len, str);
 437                         exit_cleanup(RERR_SYNTAX);
 438                 }
 439                 if (!s)
 440                         break;
 441                 str = s;
 442         }
 443 }
 444
 445 /* Tell the user what all the info or debug flags mean. */
 446 static void output_item_help(struct output_struct *words)
 447 {
 448         short *levels = words == info_words ? info_levels : debug_levels;
 449         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 450         char buf[128], *opt, *fmt = "%-10s %s\n";
 451         int j;
 452
 453         reset_output_levels();
 454
 455         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 456         rprintf(FINFO, "\n");
 457         for (j = 0; words[j].name; j++)
 458                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 459         rprintf(FINFO, "\n");
 460
 461         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 462                  words[j].help, MAX_OUT_LEVEL);
 463         rprintf(FINFO, fmt, "ALL", buf);
 464
 465         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 466                  words[j].help);
 467         rprintf(FINFO, fmt, "NONE", buf);
 468
 469         rprintf(FINFO, fmt, "HELP", "Output this help message");
 470         rprintf(FINFO, "\n");
 471         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 472
 473         for (j = 1; j <= MAX_VERBOSITY; j++) {
 474                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 475                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 476                 if (opt) {
 477                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 478                         free(opt);
 479                 }
 480                 reset_output_levels();
 481         }
 482 }
 483
 484 /* The --verbose option now sets info+debug flags. */
 485 static void set_output_verbosity(int level, uchar priority)
 486 {
 487         int j;
 488
 489         if (level > MAX_VERBOSITY)
 490                 level = MAX_VERBOSITY;
 491
 492         for (j = 1; j <= level; j++) {
 493                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 494                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 495         }
 496 }
 497
 498 /* Limit the info+debug flag levels given a verbose-option level limit. */
 499 void limit_output_verbosity(int level)
 500 {
 501         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 502         int j;
 503
 504         if (level > MAX_VERBOSITY)
 505                 return;
 506
 507         memset(info_limits, 0, sizeof info_limits);
 508         memset(debug_limits, 0, sizeof debug_limits);
 509
 510         /* Compute the level limits in the above arrays. */
 511         for (j = 1; j <= level; j++) {
 512                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 513                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 514         }
 515
 516         for (j = 0; j < COUNT_INFO; j++) {
 517                 if (info_levels[j] > info_limits[j])
 518                         info_levels[j] = info_limits[j];
 519         }
 520
 521         for (j = 0; j < COUNT_DEBUG; j++) {
 522                 if (debug_levels[j] > debug_limits[j])
 523                         debug_levels[j] = debug_limits[j];
 524         }
 525 }
 526
 527 void reset_output_levels(void)
 528 {
 529         int j;
 530
 531         memset(info_levels, 0, sizeof info_levels);
 532         memset(debug_levels, 0, sizeof debug_levels);
 533
 534         for (j = 0; j < COUNT_INFO; j++)
 535                 info_words[j].priority = DEFAULT_PRIORITY;
 536
 537         for (j = 0; j < COUNT_DEBUG; j++)
 538                 debug_words[j].priority = DEFAULT_PRIORITY;
 539 }
 540
 541 void negate_output_levels(void)
 542 {
 543         int j;
 544
 545         for (j = 0; j < COUNT_INFO; j++)
 546                 info_levels[j] *= -1;
 547
 548         for (j = 0; j < COUNT_DEBUG; j++)
 549                 debug_levels[j] *= -1;
 550 }
 551
 552 static void print_rsync_version(enum logcode f)
 553 {
 554         char *subprotocol = "";
 555         char const *got_socketpair = "no ";
 556         char const *have_inplace = "no ";
 557         char const *hardlinks = "no ";
 558         char const *symtimes = "no ";
 559         char const *acls = "no ";
 560         char const *xattrs = "no ";
 561         char const *links = "no ";
 562         char const *iconv = "no ";
 563         char const *ipv6 = "no ";
 564         STRUCT_STAT *dumstat;
 565
 566 #if SUBPROTOCOL_VERSION != 0
 567         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
 568 #endif
 569 #ifdef HAVE_SOCKETPAIR
 570         got_socketpair = "";
 571 #endif
 572 #ifdef HAVE_FTRUNCATE
 573         have_inplace = "";
 574 #endif
 575 #ifdef SUPPORT_HARD_LINKS
 576         hardlinks = "";
 577 #endif
 578 #ifdef SUPPORT_ACLS
 579         acls = "";
 580 #endif
 581 #ifdef SUPPORT_XATTRS
 582         xattrs = "";
 583 #endif
 584 #ifdef SUPPORT_LINKS
 585         links = "";
 586 #endif
 587 #ifdef INET6
 588         ipv6 = "";
 589 #endif
 590 #ifdef ICONV_OPTION
 591         iconv = "";
 592 #endif
 593 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
 594         symtimes = "";
 595 #endif
 596
 597         rprintf(f, "%s  version %s  protocol version %d%s\n",
 598                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 599         rprintf(f, "Copyright (C) 1996-2008 by Andrew Tridgell, Wayne Davison, and others.\n");
 600         rprintf(f, "Web site: http://rsync.samba.org/\n");
 601         rprintf(f, "Capabilities:\n");
 602         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 603                 (int)(sizeof (OFF_T) * 8),
 604                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 605                 (int)(sizeof (time_t) * 8),
 606                 (int)(sizeof (int64) * 8));
 607         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 608                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 609         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
 610                 have_inplace, acls, xattrs, iconv, symtimes);
 611
 612 #ifdef MAINTAINER_MODE
 613         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 614 #endif
 615
 616 #if SIZEOF_INT64 < 8
 617         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 618 #endif
 619         if (sizeof (int64) != SIZEOF_INT64) {
 620                 rprintf(f,
 621                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 622                         (int) SIZEOF_INT64, (int) sizeof (int64));
 623         }
 624
 625         rprintf(f,"\n");
 626         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 627         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 628         rprintf(f,"General Public Licence for details.\n");
 629 }
 630
 631
 632 void usage(enum logcode F)
 633 {
 634   print_rsync_version(F);
 635
 636   rprintf(F,"\n");
 637   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 638   rprintf(F,"via a fast differencing algorithm.\n");
 639
 640   rprintf(F,"\n");
 641   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 642   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 643   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 644   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 645   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 646   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 647   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 648   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 649   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 650   rprintf(F,"\n");
 651   rprintf(F,"Options\n");
 652   rprintf(F," -v, --verbose               increase verbosity\n");
 653   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 654   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 655   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 656   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 657   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 658   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 659   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 660   rprintf(F," -r, --recursive             recurse into directories\n");
 661   rprintf(F," -R, --relative              use relative path names\n");
 662   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 663   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 664   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 665   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 666   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 667   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 668   rprintf(F,"     --append                append data onto shorter files\n");
 669   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 670   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 671   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 672   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 673   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 674   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 675   rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
 676   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 677   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 678   rprintf(F," -H, --hard-links            preserve hard links\n");
 679   rprintf(F," -p, --perms                 preserve permissions\n");
 680   rprintf(F," -E, --executability         preserve the file's executability\n");
 681   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 682 #ifdef SUPPORT_ACLS
 683   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 684 #endif
 685 #ifdef SUPPORT_XATTRS
 686   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 687 #endif
 688   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 689   rprintf(F," -g, --group                 preserve group\n");
 690   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 691   rprintf(F,"     --specials              preserve special files\n");
 692   rprintf(F," -D                          same as --devices --specials\n");
 693   rprintf(F," -t, --times                 preserve modification times\n");
 694   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 695   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 696 #ifdef SUPPORT_XATTRS
 697   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 698 #endif
 699   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 700   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 701   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 702   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 703   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 704   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 705   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 706   rprintf(F,"     --existing              skip creating new files on receiver\n");
 707   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 708   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 709   rprintf(F,"     --del                   an alias for --delete-during\n");
 710   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 711   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 712   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
 713   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 714   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 715   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 716   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 717   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 718   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 719   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 720   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 721   rprintf(F,"     --partial               keep partially transferred files\n");
 722   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 723   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 724   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 725   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 726   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 727   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 728   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 729   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 730   rprintf(F,"     --size-only             skip files that match in size\n");
 731   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 732   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 733   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 734   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 735   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 736   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 737   rprintf(F," -z, --compress              compress file data during the transfer\n");
 738   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 739   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 740   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 741   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 742   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 743   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 744   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 745   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 746   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 747   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 748   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 749   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 750   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 751   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 752   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 753   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 754   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 755   rprintf(F,"     --stats                 give some file-transfer stats\n");
 756   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 757   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 758   rprintf(F,"     --progress              show progress during transfer\n");
 759   rprintf(F," -P                          same as --partial --progress\n");
 760   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 761   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 762   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 763   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 764   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 765   rprintf(F,"     --list-only             list the files instead of copying them\n");
 766   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 767   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 768   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 769   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 770   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 771 #ifdef ICONV_OPTION
 772   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 773 #endif
 774   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 775   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 776   rprintf(F,"     --version               print version number\n");
 777   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 778
 779   rprintf(F,"\n");
 780   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 781   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 782   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 783 }
 784
 785 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 786       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 787       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 788       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 789       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 790       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 791
 792 static struct poptOption long_options[] = {
 793   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 794   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 795   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 796   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 797   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 798   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 799   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 800   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 801   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 802   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 803   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 804   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 805   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 806   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 807   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 808   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 809   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 810   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 811   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 812   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 813   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 814   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 815   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 816   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 817   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 818   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 819   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 820   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 821   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 822   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 823   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 824   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 825   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 826   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 827   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 828   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 829   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 830   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 831   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 832   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 833   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
 834   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 835   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 836   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 837   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 838   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 839   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 840   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 841   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 842   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 843   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 844   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 845   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 846   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 847   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 848   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 849   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 850   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 851   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 852   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 853   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 854   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 855   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 856   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 857   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 858   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 859   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 860   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 861   {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
 862   {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
 863   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 864   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 865   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 866   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 867   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 868   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 869   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 870   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 871   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 872   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 873   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 874   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 875   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 876   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 877   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 878   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 879   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
 880   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 881   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 882   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 883   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 884   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 885   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 886   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 887   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
 888   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 889   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 890   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
 891   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
 892   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 893   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 894   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 895   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 896   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 897   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 898   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 899   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 900   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 901   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 902   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 903   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 904   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
 905   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
 906   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
 907   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
 908   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 909   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 910   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 911   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 912   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 913   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 914   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 915   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 916   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 917   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 918   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 919   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 920   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 921   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 922   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 923   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 924   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 925   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 926   {"fuzzy",           'y', POPT_ARG_VAL,    &fuzzy_basis, 1, 0, 0 },
 927   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 928   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 929   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 930   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 931   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 932   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 933   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 934   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 935   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 936   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 937   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 938   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 939   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 940   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 941   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 942   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
 943   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 944   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 945   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 946   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 947   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 948   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 949   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 950   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 951   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 952   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 953   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 954   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 955   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 956   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 957   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 958   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 959   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 960   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 961   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 962   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 963   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 964   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 965   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 966   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 967   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 968   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
 969   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
 970   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 971   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
 972   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
 973   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
 974   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 975   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 976   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 977 #ifdef ICONV_OPTION
 978   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
 979   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
 980 #endif
 981   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 982   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 983   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
 984   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 985   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 986   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
 987   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 988   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 989   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 990   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 991   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 992   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 993   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
 994   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 995   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 996   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 997   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 998   /* All the following options switch us into daemon-mode option-parsing. */
 999   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1000   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1001   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
1002   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1003   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
1004   {0,0,0,0, 0, 0, 0}
1005 };
1006
1007 static void daemon_usage(enum logcode F)
1008 {
1009   print_rsync_version(F);
1010
1011   rprintf(F,"\n");
1012   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1013   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1014   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
1015   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1016   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1017   rprintf(F,"     --no-detach             do not detach from the parent\n");
1018   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1019   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1020   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1021   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1022   rprintf(F," -v, --verbose               increase verbosity\n");
1023   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1024   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1025   rprintf(F,"     --help                  show this help screen\n");
1026
1027   rprintf(F,"\n");
1028   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1029   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1030 }
1031
1032 static struct poptOption long_daemon_options[] = {
1033   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1034   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1035   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1036   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1037   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1038   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1039   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1040   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1041   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1042   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1043   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1044   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1045   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1046   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1047   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1048   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1049   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1050   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1051   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1052   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1053   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1054   {0,0,0,0, 0, 0, 0}
1055 };
1056
1057
1058 static char err_buf[200];
1059
1060
1061 /**
1062  * Store the option error message, if any, so that we can log the
1063  * connection attempt (which requires parsing the options), and then
1064  * show the error later on.
1065  **/
1066 void option_error(void)
1067 {
1068         if (!err_buf[0]) {
1069                 strlcpy(err_buf, "Error parsing options: option may "
1070                         "be supported on client but not on server?\n",
1071                         sizeof err_buf);
1072         }
1073
1074         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1075         msleep(20);
1076 }
1077
1078
1079 /**
1080  * Tweak the option table to disable all options that the rsyncd.conf
1081  * file has told us to refuse.
1082  **/
1083 static void set_refuse_options(char *bp)
1084 {
1085         struct poptOption *op;
1086         char *cp, shortname[2];
1087         int is_wild, found_match;
1088
1089         shortname[1] = '\0';
1090
1091         while (1) {
1092                 while (*bp == ' ') bp++;
1093                 if (!*bp)
1094                         break;
1095                 if ((cp = strchr(bp, ' ')) != NULL)
1096                         *cp= '\0';
1097                 is_wild = strpbrk(bp, "*?[") != NULL;
1098                 found_match = 0;
1099                 for (op = long_options; ; op++) {
1100                         *shortname = op->shortName;
1101                         if (!op->longName && !*shortname)
1102                                 break;
1103                         if ((op->longName && wildmatch(bp, op->longName))
1104                             || (*shortname && wildmatch(bp, shortname))) {
1105                                 if (op->argInfo == POPT_ARG_VAL)
1106                                         op->argInfo = POPT_ARG_NONE;
1107                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1108                                 found_match = 1;
1109                                 /* These flags are set to let us easily check
1110                                  * an implied option later in the code. */
1111                                 switch (*shortname) {
1112                                 case 'r': case 'd': case 'l': case 'p':
1113                                 case 't': case 'g': case 'o': case 'D':
1114                                         refused_archive_part = op->val;
1115                                         break;
1116                                 case 'z':
1117                                         refused_compress = op->val;
1118                                         break;
1119                                 case '\0':
1120                                         if (wildmatch("delete", op->longName))
1121                                                 refused_delete = op->val;
1122                                         else if (wildmatch("delete-before", op->longName))
1123                                                 refused_delete_before = op->val;
1124                                         else if (wildmatch("delete-during", op->longName))
1125                                                 refused_delete_during = op->val;
1126                                         else if (wildmatch("partial", op->longName))
1127                                                 refused_partial = op->val;
1128                                         else if (wildmatch("progress", op->longName))
1129                                                 refused_progress = op->val;
1130                                         else if (wildmatch("inplace", op->longName))
1131                                                 refused_inplace = op->val;
1132                                         else if (wildmatch("no-iconv", op->longName))
1133                                                 refused_no_iconv = op->val;
1134                                         break;
1135                                 }
1136                                 if (!is_wild)
1137                                         break;
1138                         }
1139                 }
1140                 if (!found_match) {
1141                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
1142                                 bp);
1143                 }
1144                 if (!cp)
1145                         break;
1146                 *cp = ' ';
1147                 bp = cp + 1;
1148         }
1149 }
1150
1151
1152 static int count_args(const char **argv)
1153 {
1154         int i = 0;
1155
1156         if (argv) {
1157                 while (argv[i] != NULL)
1158                         i++;
1159         }
1160
1161         return i;
1162 }
1163
1164
1165 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1166 {
1167         int reps, mult, make_compatible = 0;
1168         const char *arg;
1169         OFF_T size = 1;
1170
1171         for (arg = *size_arg; isDigit(arg); arg++) {}
1172         if (*arg == '.')
1173                 for (arg++; isDigit(arg); arg++) {}
1174         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1175         case 'b': case 'B':
1176                 reps = 0;
1177                 break;
1178         case 'k': case 'K':
1179                 reps = 1;
1180                 break;
1181         case 'm': case 'M':
1182                 reps = 2;
1183                 break;
1184         case 'g': case 'G':
1185                 reps = 3;
1186                 break;
1187         default:
1188                 return -1;
1189         }
1190         if (*arg == 'b' || *arg == 'B')
1191                 mult = 1000, make_compatible = 1, arg++;
1192         else if (!*arg || *arg == '+' || *arg == '-')
1193                 mult = 1024;
1194         else if (strncasecmp(arg, "ib", 2) == 0)
1195                 mult = 1024, arg += 2;
1196         else
1197                 return -1;
1198         while (reps--)
1199                 size *= mult;
1200         size *= atof(*size_arg);
1201         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1202                 size += atoi(arg), make_compatible = 1, arg += 2;
1203         if (*arg)
1204                 return -1;
1205         if (size > 0 && make_compatible) {
1206                 /* We convert this manually because we may need %lld precision,
1207                  * and that's not a portable sprintf() escape. */
1208                 char buf[128], *s = buf + sizeof buf - 1;
1209                 OFF_T num = size;
1210                 *s = '\0';
1211                 while (num) {
1212                         *--s = (char)(num % 10) + '0';
1213                         num /= 10;
1214                 }
1215                 if (!(*size_arg = strdup(s)))
1216                         out_of_memory("parse_size_arg");
1217         }
1218         return size;
1219 }
1220
1221
1222 static void create_refuse_error(int which)
1223 {
1224         /* The "which" value is the index + OPT_REFUSED_BASE. */
1225         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1226         int n = snprintf(err_buf, sizeof err_buf,
1227                          "The server is configured to refuse --%s\n",
1228                          op->longName) - 1;
1229         if (op->shortName) {
1230                 snprintf(err_buf + n, sizeof err_buf - n,
1231                          " (-%c)\n", op->shortName);
1232         }
1233 }
1234
1235
1236 /**
1237  * Process command line arguments.  Called on both local and remote.
1238  *
1239  * @retval 1 if all options are OK; with globals set to appropriate
1240  * values
1241  *
1242  * @retval 0 on error, with err_buf containing an explanation
1243  **/
1244 int parse_arguments(int *argc_p, const char ***argv_p)
1245 {
1246         static poptContext pc;
1247         char *ref = lp_refuse_options(module_id);
1248         const char *arg, **argv = *argv_p;
1249         int argc = *argc_p;
1250         int opt;
1251
1252         if (ref && *ref)
1253                 set_refuse_options(ref);
1254         if (am_daemon) {
1255                 set_refuse_options("log-file*");
1256 #ifdef ICONV_OPTION
1257                 if (!*lp_charset(module_id))
1258                         set_refuse_options("iconv");
1259 #endif
1260         }
1261
1262 #ifdef ICONV_OPTION
1263         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1264                 iconv_opt = strdup(arg);
1265 #endif
1266
1267         /* TODO: Call poptReadDefaultConfig; handle errors. */
1268
1269         /* The context leaks in case of an error, but if there's a
1270          * problem we always exit anyhow. */
1271         if (pc)
1272                 poptFreeContext(pc);
1273         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1274         if (!am_server)
1275                 poptReadDefaultConfig(pc, 0);
1276
1277         while ((opt = poptGetNextOpt(pc)) != -1) {
1278                 /* most options are handled automatically by popt;
1279                  * only special cases are returned and listed here. */
1280
1281                 switch (opt) {
1282                 case OPT_VERSION:
1283                         print_rsync_version(FINFO);
1284                         exit_cleanup(0);
1285
1286                 case OPT_SERVER:
1287                         if (!am_server) {
1288                                 /* Disable popt aliases on the server side and
1289                                  * then start parsing the options again. */
1290                                 poptFreeContext(pc);
1291                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1292                                                     long_options, 0);
1293                                 am_server = 1;
1294                         }
1295 #ifdef ICONV_OPTION
1296                         iconv_opt = NULL;
1297 #endif
1298                         break;
1299
1300                 case OPT_SENDER:
1301                         if (!am_server) {
1302                                 usage(FERROR);
1303                                 exit_cleanup(RERR_SYNTAX);
1304                         }
1305                         am_sender = 1;
1306                         break;
1307
1308                 case OPT_DAEMON:
1309                         if (am_daemon) {
1310                                 strlcpy(err_buf,
1311                                         "Attempt to hack rsync thwarted!\n",
1312                                         sizeof err_buf);
1313                                 return 0;
1314                         }
1315 #ifdef ICONV_OPTION
1316                         iconv_opt = NULL;
1317 #endif
1318                         poptFreeContext(pc);
1319                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1320                                             long_daemon_options, 0);
1321                         while ((opt = poptGetNextOpt(pc)) != -1) {
1322                                 char **cpp;
1323                                 switch (opt) {
1324                                 case 'h':
1325                                         daemon_usage(FINFO);
1326                                         exit_cleanup(0);
1327
1328                                 case 'M':
1329                                         arg = poptGetOptArg(pc);
1330                                         if (!strchr(arg, '=')) {
1331                                                 rprintf(FERROR,
1332                                                     "--dparam value is missing an '=': %s\n",
1333                                                     arg);
1334                                                 goto daemon_error;
1335                                         }
1336                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1337                                         *cpp = strdup(arg);
1338                                         break;
1339
1340                                 case 'v':
1341                                         verbose++;
1342                                         break;
1343
1344                                 default:
1345                                         rprintf(FERROR,
1346                                             "rsync: %s: %s (in daemon mode)\n",
1347                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1348                                             poptStrerror(opt));
1349                                         goto daemon_error;
1350                                 }
1351                         }
1352
1353                         if (dparam_list.count && !set_dparams(1))
1354                                 exit_cleanup(RERR_SYNTAX);
1355
1356                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1357                                 snprintf(err_buf, sizeof err_buf,
1358                                          "the --temp-dir path is WAY too long.\n");
1359                                 return 0;
1360                         }
1361
1362                         if (!daemon_opt) {
1363                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1364                             daemon_error:
1365                                 rprintf(FERROR,
1366                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1367                                 exit_cleanup(RERR_SYNTAX);
1368                         }
1369
1370                         *argv_p = argv = poptGetArgs(pc);
1371                         *argc_p = argc = count_args(argv);
1372                         am_starting_up = 0;
1373                         daemon_opt = 0;
1374                         am_daemon = 1;
1375                         return 1;
1376
1377                 case OPT_MODIFY_WINDOW:
1378                         /* The value has already been set by popt, but
1379                          * we need to remember that we're using a
1380                          * non-default setting. */
1381                         modify_window_set = 1;
1382                         break;
1383
1384                 case OPT_FILTER:
1385                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1386                         break;
1387
1388                 case OPT_EXCLUDE:
1389                         parse_rule(&filter_list, poptGetOptArg(pc),
1390                                    0, XFLG_OLD_PREFIXES);
1391                         break;
1392
1393                 case OPT_INCLUDE:
1394                         parse_rule(&filter_list, poptGetOptArg(pc),
1395                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1396                         break;
1397
1398                 case OPT_EXCLUDE_FROM:
1399                 case OPT_INCLUDE_FROM:
1400                         arg = poptGetOptArg(pc);
1401                         if (sanitize_paths)
1402                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1403                         if (daemon_filter_list.head) {
1404                                 int rej;
1405                                 char *dir, *cp = strdup(arg);
1406                                 if (!cp)
1407                                         out_of_memory("parse_arguments");
1408                                 if (!*cp)
1409                                         goto options_rejected;
1410                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1411                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1412                                 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1413                                 free(cp);
1414                                 if (rej)
1415                                         goto options_rejected;
1416                         }
1417                         parse_filter_file(&filter_list, arg,
1418                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1419                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1420                         break;
1421
1422                 case 'a':
1423                         if (refused_archive_part) {
1424                                 create_refuse_error(refused_archive_part);
1425                                 return 0;
1426                         }
1427                         if (!recurse) /* preserve recurse == 2 */
1428                                 recurse = 1;
1429 #ifdef SUPPORT_LINKS
1430                         preserve_links = 1;
1431 #endif
1432                         preserve_perms = 1;
1433                         preserve_times = 2;
1434                         preserve_gid = 1;
1435                         preserve_uid = 1;
1436                         preserve_devices = 1;
1437                         preserve_specials = 1;
1438                         break;
1439
1440                 case 'D':
1441                         preserve_devices = preserve_specials = 1;
1442                         break;
1443
1444                 case OPT_NO_D:
1445                         preserve_devices = preserve_specials = 0;
1446                         break;
1447
1448                 case 'h':
1449                         human_readable++;
1450                         break;
1451
1452                 case 'H':
1453                         preserve_hard_links++;
1454                         break;
1455
1456                 case 'i':
1457                         itemize_changes++;
1458                         break;
1459
1460                 case 'v':
1461                         verbose++;
1462                         break;
1463
1464                 case 'q':
1465                         quiet++;
1466                         break;
1467
1468                 case 'x':
1469                         one_file_system++;
1470                         break;
1471
1472                 case 'F':
1473                         switch (++F_option_cnt) {
1474                         case 1:
1475                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1476                                 break;
1477                         case 2:
1478                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1479                                 break;
1480                         }
1481                         break;
1482
1483                 case 'P':
1484                         if (refused_partial || refused_progress) {
1485                                 create_refuse_error(refused_partial
1486                                     ? refused_partial : refused_progress);
1487                                 return 0;
1488                         }
1489                         do_progress = 1;
1490                         keep_partial = 1;
1491                         break;
1492
1493                 case 'z':
1494                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1495                          || def_compress_level > Z_BEST_COMPRESSION) {
1496                                 snprintf(err_buf, sizeof err_buf,
1497                                         "--compress-level value is invalid: %d\n",
1498                                         def_compress_level);
1499                                 return 0;
1500                         }
1501                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1502                         if (do_compression && refused_compress) {
1503                                 create_refuse_error(refused_compress);
1504                                 return 0;
1505                         }
1506                         break;
1507
1508                 case 'M':
1509                         arg = poptGetOptArg(pc);
1510                         if (*arg != '-') {
1511                                 snprintf(err_buf, sizeof err_buf,
1512                                         "Remote option must start with a dash: %s\n", arg);
1513                                 return 0;
1514                         }
1515                         if (remote_option_cnt+2 >= remote_option_alloc) {
1516                                 remote_option_alloc += 16;
1517                                 remote_options = realloc_array(remote_options,
1518                                                         const char *, remote_option_alloc);
1519                                 if (!remote_options)
1520                                         out_of_memory("parse_arguments");
1521                                 if (!remote_option_cnt)
1522                                         remote_options[0] = "ARG0";
1523                         }
1524                         remote_options[++remote_option_cnt] = arg;
1525                         remote_options[remote_option_cnt+1] = NULL;
1526                         break;
1527
1528                 case OPT_WRITE_BATCH:
1529                         /* batch_name is already set */
1530                         write_batch = 1;
1531                         break;
1532
1533                 case OPT_ONLY_WRITE_BATCH:
1534                         /* batch_name is already set */
1535                         write_batch = -1;
1536                         break;
1537
1538                 case OPT_READ_BATCH:
1539                         /* batch_name is already set */
1540                         read_batch = 1;
1541                         break;
1542
1543                 case OPT_NO_ICONV:
1544 #ifdef ICONV_OPTION
1545                         iconv_opt = NULL;
1546 #endif
1547                         break;
1548
1549                 case OPT_MAX_SIZE:
1550                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1551                                 snprintf(err_buf, sizeof err_buf,
1552                                         "--max-size value is invalid: %s\n",
1553                                         max_size_arg);
1554                                 return 0;
1555                         }
1556                         break;
1557
1558                 case OPT_MIN_SIZE:
1559                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1560                                 snprintf(err_buf, sizeof err_buf,
1561                                         "--min-size value is invalid: %s\n",
1562                                         min_size_arg);
1563                                 return 0;
1564                         }
1565                         break;
1566
1567                 case OPT_APPEND:
1568                         if (am_server)
1569                                 append_mode++;
1570                         else
1571                                 append_mode = 1;
1572                         break;
1573
1574                 case OPT_LINK_DEST:
1575 #ifdef SUPPORT_HARD_LINKS
1576                         link_dest = 1;
1577                         dest_option = "--link-dest";
1578                         goto set_dest_dir;
1579 #else
1580                         snprintf(err_buf, sizeof err_buf,
1581                                  "hard links are not supported on this %s\n",
1582                                  am_server ? "server" : "client");
1583                         return 0;
1584 #endif
1585
1586                 case OPT_COPY_DEST:
1587                         copy_dest = 1;
1588                         dest_option = "--copy-dest";
1589                         goto set_dest_dir;
1590
1591                 case OPT_COMPARE_DEST:
1592                         compare_dest = 1;
1593                         dest_option = "--compare-dest";
1594                 set_dest_dir:
1595                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1596                                 snprintf(err_buf, sizeof err_buf,
1597                                         "ERROR: at most %d %s args may be specified\n",
1598                                         MAX_BASIS_DIRS, dest_option);
1599                                 return 0;
1600                         }
1601                         /* We defer sanitizing this arg until we know what
1602                          * our destination directory is going to be. */
1603                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1604                         break;
1605
1606                 case OPT_CHMOD:
1607                         arg = poptGetOptArg(pc);
1608                         if (!parse_chmod(arg, &chmod_modes)) {
1609                                 snprintf(err_buf, sizeof err_buf,
1610                                     "Invalid argument passed to --chmod (%s)\n",
1611                                     arg);
1612                                 return 0;
1613                         }
1614                         break;
1615
1616                 case OPT_INFO:
1617                         arg = poptGetOptArg(pc);
1618                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1619                         break;
1620
1621                 case OPT_DEBUG:
1622                         arg = poptGetOptArg(pc);
1623                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1624                         break;
1625
1626                 case OPT_HELP:
1627                         usage(FINFO);
1628                         exit_cleanup(0);
1629
1630                 case 'A':
1631 #ifdef SUPPORT_ACLS
1632                         preserve_acls = 1;
1633                         preserve_perms = 1;
1634                         break;
1635 #else
1636                         /* FIXME: this should probably be ignored with a
1637                          * warning and then countermeasures taken to
1638                          * restrict group and other access in the presence
1639                          * of any more restrictive ACLs, but this is safe
1640                          * for now */
1641                         snprintf(err_buf,sizeof(err_buf),
1642                                  "ACLs are not supported on this %s\n",
1643                                  am_server ? "server" : "client");
1644                         return 0;
1645 #endif
1646
1647                 case 'X':
1648 #ifdef SUPPORT_XATTRS
1649                         preserve_xattrs++;
1650                         break;
1651 #else
1652                         snprintf(err_buf,sizeof(err_buf),
1653                                  "extended attributes are not supported on this %s\n",
1654                                  am_server ? "server" : "client");
1655                         return 0;
1656 #endif
1657
1658                 default:
1659                         /* A large opt value means that set_refuse_options()
1660                          * turned this option off. */
1661                         if (opt >= OPT_REFUSED_BASE) {
1662                                 create_refuse_error(opt);
1663                                 return 0;
1664                         }
1665                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1666                                  am_server ? "on remote machine: " : "",
1667                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1668                                  poptStrerror(opt));
1669                         return 0;
1670                 }
1671         }
1672
1673         if (human_readable > 1 && argc == 2 && !am_server) {
1674                 /* Allow the old meaning of 'h' (--help) on its own. */
1675                 usage(FINFO);
1676                 exit_cleanup(0);
1677         }
1678
1679         set_output_verbosity(verbose, DEFAULT_PRIORITY);
1680
1681         if (do_stats && !am_server) {
1682                 parse_output_words(info_words, info_levels,
1683                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1684         }
1685
1686         if (human_readable) {
1687                 char buf[32];
1688                 snprintf(buf, sizeof buf, "%f", 3.14);
1689                 if (strchr(buf, '.') != NULL)
1690                         number_separator = ',';
1691                 else
1692                         number_separator = '.';
1693         }
1694
1695 #ifdef ICONV_OPTION
1696         if (iconv_opt && protect_args != 2) {
1697                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1698                         iconv_opt = NULL;
1699                 else
1700                         need_unsorted_flist = 1;
1701         }
1702         if (refused_no_iconv && !iconv_opt) {
1703                 create_refuse_error(refused_no_iconv);
1704                 return 0;
1705         }
1706 #endif
1707
1708         if (protect_args == 1 && am_server)
1709                 return 1;
1710
1711         *argv_p = argv = poptGetArgs(pc);
1712         *argc_p = argc = count_args(argv);
1713
1714 #ifndef SUPPORT_LINKS
1715         if (preserve_links && !am_sender) {
1716                 snprintf(err_buf, sizeof err_buf,
1717                          "symlinks are not supported on this %s\n",
1718                          am_server ? "server" : "client");
1719                 return 0;
1720         }
1721 #endif
1722
1723 #ifndef SUPPORT_HARD_LINKS
1724         if (preserve_hard_links) {
1725                 snprintf(err_buf, sizeof err_buf,
1726                          "hard links are not supported on this %s\n",
1727                          am_server ? "server" : "client");
1728                 return 0;
1729         }
1730 #endif
1731
1732 #ifdef SUPPORT_XATTRS
1733         if (am_root < 0 && preserve_xattrs > 1) {
1734                 snprintf(err_buf, sizeof err_buf,
1735                          "--fake-super conflicts with -XX\n");
1736                 return 0;
1737         }
1738 #else
1739         if (am_root < 0) {
1740                 snprintf(err_buf, sizeof err_buf,
1741                          "--fake-super requires an rsync with extended attributes enabled\n");
1742                 return 0;
1743         }
1744 #endif
1745
1746         if (write_batch && read_batch) {
1747                 snprintf(err_buf, sizeof err_buf,
1748                         "--write-batch and --read-batch can not be used together\n");
1749                 return 0;
1750         }
1751         if (write_batch > 0 || read_batch) {
1752                 if (am_server) {
1753                         rprintf(FINFO,
1754                                 "ignoring --%s-batch option sent to server\n",
1755                                 write_batch ? "write" : "read");
1756                         /* We don't actually exit_cleanup(), so that we can
1757                          * still service older version clients that still send
1758                          * batch args to server. */
1759                         read_batch = write_batch = 0;
1760                         batch_name = NULL;
1761                 } else if (dry_run)
1762                         write_batch = 0;
1763         } else if (write_batch < 0 && dry_run)
1764                 write_batch = 0;
1765         if (read_batch && files_from) {
1766                 snprintf(err_buf, sizeof err_buf,
1767                         "--read-batch cannot be used with --files-from\n");
1768                 return 0;
1769         }
1770         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1771                 snprintf(err_buf, sizeof err_buf,
1772                         "the batch-file name must be %d characters or less.\n",
1773                         MAX_BATCH_NAME_LEN);
1774                 return 0;
1775         }
1776
1777         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1778                 snprintf(err_buf, sizeof err_buf,
1779                          "the --temp-dir path is WAY too long.\n");
1780                 return 0;
1781         }
1782
1783         if (max_delete < 0 && max_delete != INT_MIN) {
1784                 /* Negative numbers are treated as "no deletions". */
1785                 max_delete = 0;
1786         }
1787
1788         if (compare_dest + copy_dest + link_dest > 1) {
1789                 snprintf(err_buf, sizeof err_buf,
1790                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1791                 return 0;
1792         }
1793
1794         if (files_from) {
1795                 if (recurse == 1) /* preserve recurse == 2 */
1796                         recurse = 0;
1797                 if (xfer_dirs < 0)
1798                         xfer_dirs = 1;
1799         }
1800
1801         if (argc < 2 && !read_batch && !am_server)
1802                 list_only |= 1;
1803
1804         if (xfer_dirs >= 4) {
1805                 parse_rule(&filter_list, "- /*/*", 0, 0);
1806                 recurse = xfer_dirs = 1;
1807         } else if (recurse)
1808                 xfer_dirs = 1;
1809         else if (xfer_dirs < 0)
1810                 xfer_dirs = list_only ? 1 : 0;
1811
1812         if (relative_paths < 0)
1813                 relative_paths = files_from? 1 : 0;
1814         if (!relative_paths)
1815                 implied_dirs = 0;
1816
1817         if (delete_before + !!delete_during + delete_after > 1) {
1818                 snprintf(err_buf, sizeof err_buf,
1819                         "You may not combine multiple --delete-WHEN options.\n");
1820                 return 0;
1821         }
1822         if (delete_before || delete_during || delete_after)
1823                 delete_mode = 1;
1824         else if (delete_mode || delete_excluded) {
1825                 /* Only choose now between before & during if one is refused. */
1826                 if (refused_delete_before) {
1827                         if (!refused_delete_during)
1828                                 delete_during = 1;
1829                         else {
1830                                 create_refuse_error(refused_delete_before);
1831                                 return 0;
1832                         }
1833                 } else if (refused_delete_during)
1834                         delete_before = 1;
1835                 delete_mode = 1;
1836         }
1837         if (!xfer_dirs && delete_mode) {
1838                 snprintf(err_buf, sizeof err_buf,
1839                         "--delete does not work without -r or -d.\n");
1840                 return 0;
1841         }
1842
1843         if (delete_mode && refused_delete) {
1844                 create_refuse_error(refused_delete);
1845                 return 0;
1846         }
1847
1848         if (remove_source_files) {
1849                 /* We only want to infer this refusal of --remove-source-files
1850                  * via the refusal of "delete", not any of the "delete-FOO"
1851                  * options. */
1852                 if (refused_delete && am_sender) {
1853                         create_refuse_error(refused_delete);
1854                         return 0;
1855                 }
1856                 need_messages_from_generator = 1;
1857         }
1858
1859         if (munge_symlinks && !am_daemon) {
1860                 STRUCT_STAT st;
1861                 char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
1862                 strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
1863                 if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
1864                         rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
1865                                 prefix);
1866                         exit_cleanup(RERR_UNSUPPORTED);
1867                 }
1868         }
1869
1870         if (sanitize_paths) {
1871                 int i;
1872                 for (i = argc; i-- > 0; )
1873                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
1874                 if (tmpdir)
1875                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
1876                 if (backup_dir)
1877                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
1878         }
1879         if (daemon_filter_list.head && !am_sender) {
1880                 struct filter_list_struct *elp = &daemon_filter_list;
1881                 if (tmpdir) {
1882                         char *dir;
1883                         if (!*tmpdir)
1884                                 goto options_rejected;
1885                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1886                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1887                         if (check_filter(elp, FLOG, dir, 1) < 0)
1888                                 goto options_rejected;
1889                 }
1890                 if (backup_dir) {
1891                         char *dir;
1892                         if (!*backup_dir)
1893                                 goto options_rejected;
1894                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1895                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1896                         if (check_filter(elp, FLOG, dir, 1) < 0)
1897                                 goto options_rejected;
1898                 }
1899         }
1900
1901         if (!backup_suffix)
1902                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1903         backup_suffix_len = strlen(backup_suffix);
1904         if (strchr(backup_suffix, '/') != NULL) {
1905                 snprintf(err_buf, sizeof err_buf,
1906                         "--suffix cannot contain slashes: %s\n",
1907                         backup_suffix);
1908                 return 0;
1909         }
1910         if (backup_dir) {
1911                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1912                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1913                 if (backup_dir_remainder < 32) {
1914                         snprintf(err_buf, sizeof err_buf,
1915                                 "the --backup-dir path is WAY too long.\n");
1916                         return 0;
1917                 }
1918                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1919                         backup_dir_buf[backup_dir_len++] = '/';
1920                         backup_dir_buf[backup_dir_len] = '\0';
1921                 }
1922                 if (INFO_GTE(BACKUP, 1) && !am_sender)
1923                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1924         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1925                 snprintf(err_buf, sizeof err_buf,
1926                         "--suffix cannot be a null string without --backup-dir\n");
1927                 return 0;
1928         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1929                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1930                         "P *%s", backup_suffix);
1931                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1932         }
1933
1934         if (make_backups && !backup_dir) {
1935                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1936                 if (preserve_times > 1)
1937                         preserve_times = 1;
1938         } else if (omit_dir_times) {
1939                 if (preserve_times > 1)
1940                         preserve_times = 1;
1941         }
1942
1943         if (stdout_format) {
1944                 if (am_server && log_format_has(stdout_format, 'I'))
1945                         stdout_format_has_i = 2;
1946                 else if (log_format_has(stdout_format, 'i'))
1947                         stdout_format_has_i = itemize_changes | 1;
1948                 if (!log_format_has(stdout_format, 'b')
1949                  && !log_format_has(stdout_format, 'c')
1950                  && !log_format_has(stdout_format, 'C'))
1951                         log_before_transfer = !am_server;
1952         } else if (itemize_changes) {
1953                 stdout_format = "%i %n%L";
1954                 stdout_format_has_i = itemize_changes;
1955                 log_before_transfer = !am_server;
1956         }
1957
1958         if (do_progress && !am_server) {
1959                 if (!log_before_transfer && INFO_EQ(NAME, 0))
1960                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
1961                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
1962         }
1963
1964         if (dry_run)
1965                 do_xfers = 0;
1966
1967         set_io_timeout(io_timeout);
1968
1969         if (INFO_GTE(NAME, 1) && !stdout_format) {
1970                 stdout_format = "%n%L";
1971                 log_before_transfer = !am_server;
1972         }
1973         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1974                 stdout_format_has_o_or_i = 1;
1975
1976         if (logfile_name && !am_daemon) {
1977                 if (!logfile_format) {
1978                         logfile_format = "%i %n%L";
1979                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1980                 } else {
1981                         if (log_format_has(logfile_format, 'i'))
1982                                 logfile_format_has_i = 1;
1983                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1984                                 logfile_format_has_o_or_i = 1;
1985                 }
1986                 log_init(0);
1987         } else if (!am_daemon)
1988                 logfile_format = NULL;
1989
1990         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1991                 bwlimit = daemon_bwlimit;
1992         if (bwlimit) {
1993                 bwlimit_writemax = (size_t)bwlimit * 128;
1994                 if (bwlimit_writemax < 512)
1995                         bwlimit_writemax = 512;
1996         }
1997
1998         if (sparse_files && inplace) {
1999                 /* Note: we don't check for this below, because --append is
2000                  * OK with --sparse (as long as redos are handled right). */
2001                 snprintf(err_buf, sizeof err_buf,
2002                          "--sparse cannot be used with --inplace\n");
2003                 return 0;
2004         }
2005
2006         if (append_mode) {
2007                 if (whole_file > 0) {
2008                         snprintf(err_buf, sizeof err_buf,
2009                                  "--append cannot be used with --whole-file\n");
2010                         return 0;
2011                 }
2012                 if (refused_inplace) {
2013                         create_refuse_error(refused_inplace);
2014                         return 0;
2015                 }
2016                 inplace = 1;
2017         }
2018
2019         if (delay_updates && !partial_dir)
2020                 partial_dir = tmp_partialdir;
2021
2022         if (inplace) {
2023 #ifdef HAVE_FTRUNCATE
2024                 if (partial_dir) {
2025                         snprintf(err_buf, sizeof err_buf,
2026                                  "--%s cannot be used with --%s\n",
2027                                  append_mode ? "append" : "inplace",
2028                                  delay_updates ? "delay-updates" : "partial-dir");
2029                         return 0;
2030                 }
2031                 /* --inplace implies --partial for refusal purposes, but we
2032                  * clear the keep_partial flag for internal logic purposes. */
2033                 if (refused_partial) {
2034                         create_refuse_error(refused_partial);
2035                         return 0;
2036                 }
2037                 keep_partial = 0;
2038 #else
2039                 snprintf(err_buf, sizeof err_buf,
2040                          "--%s is not supported on this %s\n",
2041                          append_mode ? "append" : "inplace",
2042                          am_server ? "server" : "client");
2043                 return 0;
2044 #endif
2045         } else {
2046                 if (keep_partial && !partial_dir && !am_server) {
2047                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2048                                 partial_dir = strdup(arg);
2049                 }
2050                 if (partial_dir) {
2051                         if (*partial_dir)
2052                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2053                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2054                                 partial_dir = NULL;
2055                         if (!partial_dir && refused_partial) {
2056                                 create_refuse_error(refused_partial);
2057                                 return 0;
2058                         }
2059                         keep_partial = 1;
2060                 }
2061         }
2062
2063         if (files_from) {
2064                 char *h, *p;
2065                 int q;
2066                 if (argc > 2 || (!am_daemon && argc == 1)) {
2067                         usage(FERROR);
2068                         exit_cleanup(RERR_SYNTAX);
2069                 }
2070                 if (strcmp(files_from, "-") == 0) {
2071                         filesfrom_fd = 0;
2072                         if (am_server)
2073                                 filesfrom_host = ""; /* reading from socket */
2074                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2075                         if (am_server) {
2076                                 snprintf(err_buf, sizeof err_buf,
2077                                         "The --files-from sent to the server cannot specify a host.\n");
2078                                 return 0;
2079                         }
2080                         files_from = p;
2081                         filesfrom_host = h;
2082                         if (strcmp(files_from, "-") == 0) {
2083                                 snprintf(err_buf, sizeof err_buf,
2084                                         "Invalid --files-from remote filename\n");
2085                                 return 0;
2086                         }
2087                 } else {
2088                         if (sanitize_paths)
2089                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2090                         if (daemon_filter_list.head) {
2091                                 char *dir;
2092                                 if (!*files_from)
2093                                         goto options_rejected;
2094                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2095                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2096                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2097                                         goto options_rejected;
2098                         }
2099                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2100                         if (filesfrom_fd < 0) {
2101                                 snprintf(err_buf, sizeof err_buf,
2102                                         "failed to open files-from file %s: %s\n",
2103                                         files_from, strerror(errno));
2104                                 return 0;
2105                         }
2106                 }
2107         }
2108
2109         am_starting_up = 0;
2110
2111         return 1;
2112
2113   options_rejected:
2114         snprintf(err_buf, sizeof err_buf,
2115                 "Your options have been rejected by the server.\n");
2116         return 0;
2117 }
2118
2119
2120 /**
2121  * Construct a filtered list of options to pass through from the
2122  * client to the server.
2123  *
2124  * This involves setting options that will tell the server how to
2125  * behave, and also filtering out options that are processed only
2126  * locally.
2127  **/
2128 void server_options(char **args, int *argc_p)
2129 {
2130         static char argstr[64];
2131         int ac = *argc_p;
2132         uchar where;
2133         char *arg;
2134         int i, x;
2135
2136         /* This should always remain first on the server's command-line. */
2137         args[ac++] = "--server";
2138
2139         if (daemon_over_rsh > 0) {
2140                 args[ac++] = "--daemon";
2141                 *argc_p = ac;
2142                 /* if we're passing --daemon, we're done */
2143                 return;
2144         }
2145
2146         if (!am_sender)
2147                 args[ac++] = "--sender";
2148
2149         x = 1;
2150         argstr[0] = '-';
2151
2152         if (protect_args)
2153                 argstr[x++] = 's';
2154
2155         for (i = 0; i < verbose; i++)
2156                 argstr[x++] = 'v';
2157
2158         /* the -q option is intentionally left out */
2159         if (make_backups)
2160                 argstr[x++] = 'b';
2161         if (update_only)
2162                 argstr[x++] = 'u';
2163         if (!do_xfers) /* Note: NOT "dry_run"! */
2164                 argstr[x++] = 'n';
2165         if (preserve_links)
2166                 argstr[x++] = 'l';
2167         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2168          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2169                 argstr[x++] = 'd';
2170         if (am_sender) {
2171                 if (keep_dirlinks)
2172                         argstr[x++] = 'K';
2173                 if (prune_empty_dirs)
2174                         argstr[x++] = 'm';
2175                 if (omit_dir_times)
2176                         argstr[x++] = 'O';
2177         } else {
2178                 if (copy_links)
2179                         argstr[x++] = 'L';
2180                 if (copy_dirlinks)
2181                         argstr[x++] = 'k';
2182         }
2183
2184         if (whole_file > 0)
2185                 argstr[x++] = 'W';
2186         /* We don't need to send --no-whole-file, because it's the
2187          * default for remote transfers, and in any case old versions
2188          * of rsync will not understand it. */
2189
2190         if (preserve_hard_links) {
2191                 argstr[x++] = 'H';
2192                 if (preserve_hard_links > 1)
2193                         argstr[x++] = 'H';
2194         }
2195         if (preserve_uid)
2196                 argstr[x++] = 'o';
2197         if (preserve_gid)
2198                 argstr[x++] = 'g';
2199         if (preserve_devices) /* ignore preserve_specials here */
2200                 argstr[x++] = 'D';
2201         if (preserve_times)
2202                 argstr[x++] = 't';
2203         if (preserve_perms)
2204                 argstr[x++] = 'p';
2205         else if (preserve_executability && am_sender)
2206                 argstr[x++] = 'E';
2207 #ifdef SUPPORT_ACLS
2208         if (preserve_acls)
2209                 argstr[x++] = 'A';
2210 #endif
2211 #ifdef SUPPORT_XATTRS
2212         if (preserve_xattrs) {
2213                 argstr[x++] = 'X';
2214                 if (preserve_xattrs > 1)
2215                         argstr[x++] = 'X';
2216         }
2217 #endif
2218         if (recurse)
2219                 argstr[x++] = 'r';
2220         if (always_checksum)
2221                 argstr[x++] = 'c';
2222         if (cvs_exclude)
2223                 argstr[x++] = 'C';
2224         if (ignore_times)
2225                 argstr[x++] = 'I';
2226         if (relative_paths)
2227                 argstr[x++] = 'R';
2228         if (one_file_system) {
2229                 argstr[x++] = 'x';
2230                 if (one_file_system > 1)
2231                         argstr[x++] = 'x';
2232         }
2233         if (sparse_files)
2234                 argstr[x++] = 'S';
2235         if (do_compression)
2236                 argstr[x++] = 'z';
2237
2238         set_allow_inc_recurse();
2239
2240         /* Checking the pre-negotiated value allows --protocol=29 override. */
2241         if (protocol_version >= 30) {
2242                 /* We make use of the -e option to let the server know about
2243                  * any pre-release protocol version && some behavior flags. */
2244                 argstr[x++] = 'e';
2245 #if SUBPROTOCOL_VERSION != 0
2246                 if (protocol_version == PROTOCOL_VERSION) {
2247                         x += snprintf(argstr+x, sizeof argstr - x,
2248                                       "%d.%d",
2249                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2250                 } else
2251 #endif
2252                         argstr[x++] = '.';
2253                 if (allow_inc_recurse)
2254                         argstr[x++] = 'i';
2255 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
2256                 argstr[x++] = 'L';
2257 #endif
2258 #ifdef ICONV_OPTION
2259                 argstr[x++] = 's';
2260 #endif
2261         }
2262
2263         if (x >= (int)sizeof argstr) { /* Not possible... */
2264                 rprintf(FERROR, "argstr overflow in server_options().\n");
2265                 exit_cleanup(RERR_MALLOC);
2266         }
2267
2268         argstr[x] = '\0';
2269
2270         args[ac++] = argstr;
2271
2272 #ifdef ICONV_OPTION
2273         if (iconv_opt) {
2274                 char *set = strchr(iconv_opt, ',');
2275                 if (set)
2276                         set++;
2277                 else
2278                         set = iconv_opt;
2279                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2280                         goto oom;
2281                 args[ac++] = arg;
2282         }
2283 #endif
2284
2285         if (protect_args && !local_server) /* unprotected args stop here */
2286                 args[ac++] = NULL;
2287
2288         if (list_only > 1)
2289                 args[ac++] = "--list-only";
2290
2291         /* This makes sure that the remote rsync can handle deleting with -d
2292          * sans -r because the --no-r option was added at the same time. */
2293         if (xfer_dirs && !recurse && delete_mode && am_sender)
2294                 args[ac++] = "--no-r";
2295
2296         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2297                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2298                         goto oom;
2299                 args[ac++] = arg;
2300         }
2301
2302         if (preserve_devices) {
2303                 /* Note: sending "--devices" would not be backward-compatible. */
2304                 if (!preserve_specials)
2305                         args[ac++] = "--no-specials"; /* -D is already set. */
2306         } else if (preserve_specials)
2307                 args[ac++] = "--specials";
2308
2309         /* The server side doesn't use our log-format, but in certain
2310          * circumstances they need to know a little about the option. */
2311         if (stdout_format && am_sender) {
2312                 /* Use --log-format, not --out-format, for compatibility. */
2313                 if (stdout_format_has_i > 1)
2314                         args[ac++] = "--log-format=%i%I";
2315                 else if (stdout_format_has_i)
2316                         args[ac++] = "--log-format=%i";
2317                 else if (stdout_format_has_o_or_i)
2318                         args[ac++] = "--log-format=%o";
2319                 else if (!verbose)
2320                         args[ac++] = "--log-format=X";
2321         }
2322
2323         if (block_size) {
2324                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2325                         goto oom;
2326                 args[ac++] = arg;
2327         }
2328
2329         if (io_timeout) {
2330                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2331                         goto oom;
2332                 args[ac++] = arg;
2333         }
2334
2335         if (bwlimit) {
2336                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2337                         goto oom;
2338                 args[ac++] = arg;
2339         }
2340
2341         if (backup_dir) {
2342                 args[ac++] = "--backup-dir";
2343                 args[ac++] = backup_dir;
2344         }
2345
2346         /* Only send --suffix if it specifies a non-default value. */
2347         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2348                 /* We use the following syntax to avoid weirdness with '~'. */
2349                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2350                         goto oom;
2351                 args[ac++] = arg;
2352         }
2353
2354         if (am_sender) {
2355                 if (max_delete > 0) {
2356                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2357                                 goto oom;
2358                         args[ac++] = arg;
2359                 } else if (max_delete == 0)
2360                         args[ac++] = "--max-delete=-1";
2361                 if (min_size) {
2362                         args[ac++] = "--min-size";
2363                         args[ac++] = min_size_arg;
2364                 }
2365                 if (max_size) {
2366                         args[ac++] = "--max-size";
2367                         args[ac++] = max_size_arg;
2368                 }
2369                 if (delete_before)
2370                         args[ac++] = "--delete-before";
2371                 else if (delete_during == 2)
2372                         args[ac++] = "--delete-delay";
2373                 else if (delete_during)
2374                         args[ac++] = "--delete-during";
2375                 else if (delete_after)
2376                         args[ac++] = "--delete-after";
2377                 else if (delete_mode && !delete_excluded)
2378                         args[ac++] = "--delete";
2379                 if (delete_excluded)
2380                         args[ac++] = "--delete-excluded";
2381                 if (force_delete)
2382                         args[ac++] = "--force";
2383                 if (write_batch < 0)
2384                         args[ac++] = "--only-write-batch=X";
2385                 if (am_root > 1)
2386                         args[ac++] = "--super";
2387                 if (size_only)
2388                         args[ac++] = "--size-only";
2389         } else {
2390                 if (skip_compress) {
2391                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2392                                 goto oom;
2393                         args[ac++] = arg;
2394                 }
2395         }
2396
2397         if (modify_window_set) {
2398                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
2399                         goto oom;
2400                 args[ac++] = arg;
2401         }
2402
2403         if (checksum_seed) {
2404                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2405                         goto oom;
2406                 args[ac++] = arg;
2407         }
2408
2409         if (partial_dir && am_sender) {
2410                 if (partial_dir != tmp_partialdir) {
2411                         args[ac++] = "--partial-dir";
2412                         args[ac++] = partial_dir;
2413                 }
2414                 if (delay_updates)
2415                         args[ac++] = "--delay-updates";
2416         } else if (keep_partial && am_sender)
2417                 args[ac++] = "--partial";
2418
2419         if (ignore_errors)
2420                 args[ac++] = "--ignore-errors";
2421
2422         if (copy_unsafe_links)
2423                 args[ac++] = "--copy-unsafe-links";
2424
2425         if (safe_symlinks)
2426                 args[ac++] = "--safe-links";
2427
2428         if (numeric_ids)
2429                 args[ac++] = "--numeric-ids";
2430
2431         if (use_qsort)
2432                 args[ac++] = "--use-qsort";
2433
2434         if (am_sender) {
2435                 if (ignore_existing)
2436                         args[ac++] = "--ignore-existing";
2437
2438                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2439                 if (ignore_non_existing)
2440                         args[ac++] = "--existing";
2441
2442                 if (tmpdir) {
2443                         args[ac++] = "--temp-dir";
2444                         args[ac++] = tmpdir;
2445                 }
2446
2447                 if (basis_dir[0]) {
2448                         /* the server only needs this option if it is not the sender,
2449                          *   and it may be an older version that doesn't know this
2450                          *   option, so don't send it if client is the sender.
2451                          */
2452                         for (i = 0; i < basis_dir_cnt; i++) {
2453                                 args[ac++] = dest_option;
2454                                 args[ac++] = basis_dir[i];
2455                         }
2456                 }
2457         }
2458
2459         /* What flags do we need to send to the other side? */
2460         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2461         arg = make_output_option(info_words, info_levels, where);
2462         if (arg)
2463                 args[ac++] = arg;
2464
2465         arg = make_output_option(debug_words, debug_levels, where);
2466         if (arg)
2467                 args[ac++] = arg;
2468
2469         if (append_mode) {
2470                 if (append_mode > 1)
2471                         args[ac++] = "--append";
2472                 args[ac++] = "--append";
2473         } else if (inplace)
2474                 args[ac++] = "--inplace";
2475
2476         if (files_from && (!am_sender || filesfrom_host)) {
2477                 if (filesfrom_host) {
2478                         args[ac++] = "--files-from";
2479                         args[ac++] = files_from;
2480                         if (eol_nulls)
2481                                 args[ac++] = "--from0";
2482                 } else {
2483                         args[ac++] = "--files-from=-";
2484                         args[ac++] = "--from0";
2485                 }
2486                 if (!relative_paths)
2487                         args[ac++] = "--no-relative";
2488         }
2489         /* It's OK that this checks the upper-bound of the protocol_version. */
2490         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2491                 args[ac++] = "--no-implied-dirs";
2492
2493         if (fuzzy_basis && am_sender)
2494                 args[ac++] = "--fuzzy";
2495
2496         if (remove_source_files == 1)
2497                 args[ac++] = "--remove-source-files";
2498         else if (remove_source_files)
2499                 args[ac++] = "--remove-sent-files";
2500
2501         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2502                 rprintf(FERROR, "argc overflow in server_options().\n");
2503                 exit_cleanup(RERR_MALLOC);
2504         }
2505
2506         if (remote_option_cnt) {
2507                 int j;
2508                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2509                         rprintf(FERROR, "too many remote options specified.\n");
2510                         exit_cleanup(RERR_SYNTAX);
2511                 }
2512                 for (j = 1; j <= remote_option_cnt; j++)
2513                         args[ac++] = (char*)remote_options[j];
2514         }
2515
2516         *argc_p = ac;
2517         return;
2518
2519     oom:
2520         out_of_memory("server_options");
2521 }
2522
2523 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2524  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2525  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2526  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2527  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2528  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2529  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2530 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2531 {
2532         char *p;
2533         int not_host;
2534         int hostlen;
2535
2536         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2537                 char *path;
2538                 s += strlen(URL_PREFIX);
2539                 if ((p = strchr(s, '/')) != NULL) {
2540                         hostlen = p - s;
2541                         path = p + 1;
2542                 } else {
2543                         hostlen = strlen(s);
2544                         path = "";
2545                 }
2546                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2547                         s++;
2548                         hostlen = p - s;
2549                         if (p[1] == ':')
2550                                 *port_ptr = atoi(p+2);
2551                 } else {
2552                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2553                                 hostlen = p - s;
2554                                 *port_ptr = atoi(p+1);
2555                         }
2556                 }
2557                 if (!*port_ptr)
2558                         *port_ptr = RSYNC_PORT;
2559                 *host_ptr = new_array(char, hostlen + 1);
2560                 strlcpy(*host_ptr, s, hostlen + 1);
2561                 return path;
2562         }
2563
2564         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2565                 s++;
2566                 hostlen = p - s;
2567                 *p = '\0';
2568                 not_host = strchr(s, '/') || !strchr(s, ':');
2569                 *p = ']';
2570                 if (not_host)
2571                         return NULL;
2572                 p++;
2573         } else {
2574                 if (!(p = strchr(s, ':')))
2575                         return NULL;
2576                 hostlen = p - s;
2577                 *p = '\0';
2578                 not_host = strchr(s, '/') != NULL;
2579                 *p = ':';
2580                 if (not_host)
2581                         return NULL;
2582         }
2583
2584         *host_ptr = new_array(char, hostlen + 1);
2585         strlcpy(*host_ptr, s, hostlen + 1);
2586
2587         if (p[1] == ':') {
2588                 if (port_ptr && !*port_ptr)
2589                         *port_ptr = RSYNC_PORT;
2590                 return p + 2;
2591         }
2592         if (port_ptr)
2593                 *port_ptr = 0;
2594
2595         return p + 1;
2596 }