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