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 size_only = 0;
 106 int daemon_bwlimit = 0;
 107 int bwlimit = 0;
 108 int fuzzy_basis = 0;
 109 size_t bwlimit_writemax = 0;
 110 int ignore_existing = 0;
 111 int ignore_non_existing = 0;
 112 int need_messages_from_generator = 0;
 113 int max_delete = INT_MIN;
 114 OFF_T max_size = 0;
 115 OFF_T min_size = 0;
 116 int ignore_errors = 0;
 117 int modify_window = 0;
 118 int blocking_io = -1;
 119 int checksum_seed = 0;
 120 int inplace = 0;
 121 int delay_updates = 0;
 122 long block_size = 0; /* "long" because popt can't set an int32. */
 123 char *skip_compress = NULL;
 124 item_list dparam_list = EMPTY_ITEM_LIST;
 125
 126 /** Network address family. **/
 127 int default_af_hint
 128 #ifdef INET6
 129         = 0;            /* Any protocol */
 130 #else
 131         = AF_INET;      /* Must use IPv4 */
 132 # ifdef AF_INET6
 133 #  undef AF_INET6
 134 # endif
 135 # define AF_INET6 AF_INET /* make -6 option a no-op */
 136 #endif
 137
 138 /** Do not go into the background when run as --daemon.  Good
 139  * for debugging and required for running as a service on W32,
 140  * or under Unix process-monitors. **/
 141 int no_detach
 142 #if defined _WIN32 || defined __WIN32__
 143         = 1;
 144 #else
 145         = 0;
 146 #endif
 147
 148 int write_batch = 0;
 149 int read_batch = 0;
 150 int backup_dir_len = 0;
 151 int backup_suffix_len;
 152 unsigned int backup_dir_remainder;
 153
 154 char *backup_suffix = NULL;
 155 char *tmpdir = NULL;
 156 char *partial_dir = NULL;
 157 char *basis_dir[MAX_BASIS_DIRS+1];
 158 char *config_file = NULL;
 159 char *shell_cmd = NULL;
 160 char *logfile_name = NULL;
 161 char *logfile_format = NULL;
 162 char *stdout_format = NULL;
 163 char *password_file = NULL;
 164 char *rsync_path = RSYNC_PATH;
 165 char *backup_dir = NULL;
 166 char backup_dir_buf[MAXPATHLEN];
 167 char *sockopts = NULL;
 168 int rsync_port = 0;
 169 int compare_dest = 0;
 170 int copy_dest = 0;
 171 int link_dest = 0;
 172 int basis_dir_cnt = 0;
 173 char *dest_option = NULL;
 174
 175 static int remote_option_alloc = 0;
 176 int remote_option_cnt = 0;
 177 const char **remote_options = NULL;
 178
 179 int quiet = 0;
 180 int output_motd = 1;
 181 int log_before_transfer = 0;
 182 int stdout_format_has_i = 0;
 183 int stdout_format_has_o_or_i = 0;
 184 int logfile_format_has_i = 0;
 185 int logfile_format_has_o_or_i = 0;
 186 int always_checksum = 0;
 187 int list_only = 0;
 188
 189 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 190 char *batch_name = NULL;
 191
 192 int need_unsorted_flist = 0;
 193 #ifdef ICONV_OPTION
 194 char *iconv_opt = ICONV_OPTION;
 195 #endif
 196
 197 struct chmod_mode_struct *chmod_modes = NULL;
 198
 199 static const char *debug_verbosity[] = {
 200         /*0*/ NULL,
 201         /*1*/ NULL,
 202         /*2*/ "bind,cmd,deltasum,connect,del,dup,filter,flist",
 203         /*3*/ "acl,backup,deltasum2,del2,exit,filter2,flist2,fuzzy,genr,own,recv,send,time",
 204         /*4*/ "cmd2,deltasum3,del3,exit2,flist3,iconv,own2,proto,time2",
 205         /*5*/ "chdir,deltasum4,flist4,fuzzy2,hlink",
 206 };
 207
 208 #define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
 209
 210 static const char *info_verbosity[1+MAX_VERBOSITY] = {
 211         /*0*/ NULL,
 212         /*1*/ "copy,del,flist,misc,name,stats,symsafe",
 213         /*2*/ "backup,misc2,mount,name2,remove,skip",
 214 };
 215
 216 #define MAX_OUT_LEVEL 4 /* The largest N allowed for any flagN word. */
 217
 218 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 219
 220 #define DEFAULT_PRIORITY 0      /* Default/implied/--verbose set values. */
 221 #define HELP_PRIORITY 1         /* The help output uses this level. */
 222 #define USER_PRIORITY 2         /* User-specified via --info or --debug */
 223 #define LIMIT_PRIORITY 3        /* Overriding priority when limiting values. */
 224
 225 #define W_CLI (1<<0)    /* client side */
 226 #define W_SRV (1<<1)    /* server side */
 227 #define W_SND (1<<2)    /* sending side */
 228 #define W_REC (1<<3)    /* receiving side */
 229
 230 struct output_struct {
 231         char *name;     /* The name of the info/debug flag. */
 232         char *help;     /* The description of the info/debug flag. */
 233         uchar namelen;  /* The length of the name string. */
 234         uchar flag;     /* The flag's value, for consistency check. */
 235         uchar where;    /* Bits indicating where the flag is used. */
 236         uchar priority; /* See *_PRIORITY defines. */
 237 };
 238
 239 #define INFO_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, INFO_##flag, where, 0 }
 240
 241 static struct output_struct info_words[COUNT_INFO+1] = {
 242         INFO_WORD(BACKUP, W_REC, "Mention files backed up"),
 243         INFO_WORD(COPY, W_REC, "Mention files copied locally on the receiving side"),
 244         INFO_WORD(DEL, W_REC, "Mention deletions on the receiving side"),
 245         INFO_WORD(FLIST, W_CLI, "Mention file-list receiving/sending (levels 1-2)"),
 246         INFO_WORD(MISC, W_SND|W_REC, "Mention miscellaneous information (levels 1-2)"),
 247         INFO_WORD(MOUNT, W_SND|W_REC, "Mention mounts that were found or skipped"),
 248         INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 249         INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 250         INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
 251         INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
 252         INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 253         INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 254         { NULL, "--info", 0, 0, 0, 0 }
 255 };
 256
 257 #define DEBUG_WORD(flag, where, help) { #flag, help, sizeof #flag - 1, DEBUG_##flag, where, 0 }
 258
 259 static struct output_struct debug_words[COUNT_DEBUG+1] = {
 260         DEBUG_WORD(ACL, W_SND|W_REC, "Debug extra ACL info"),
 261         DEBUG_WORD(BACKUP, W_REC, "Debug backup actions (levels 1-2)"),
 262         DEBUG_WORD(BIND, W_CLI, "Debug socket bind actions"),
 263         DEBUG_WORD(CHDIR, W_CLI|W_SRV, "Debug when the current directory changes"),
 264         DEBUG_WORD(CONNECT, W_CLI, "Debug connection events"),
 265         DEBUG_WORD(CMD, W_CLI, "Debug commands+options that are issued (levels 1-2)"),
 266         DEBUG_WORD(DEL, W_REC, "Debug delete actions (levels 1-3)"),
 267         DEBUG_WORD(DELTASUM, W_SND|W_REC, "Debug delta-transfer checksumming (levels 1-4)"),
 268         DEBUG_WORD(DUP, W_REC, "Debug weeding of duplicate names"),
 269         DEBUG_WORD(EXIT, W_CLI|W_SRV, "Debug exit events (levels 1-2)"),
 270         DEBUG_WORD(FILTER, W_SND|W_REC, "Debug filter actions (levels 1-2)"),
 271         DEBUG_WORD(FLIST, W_SND|W_REC, "Debug file-list operations (levels 1-4)"),
 272         DEBUG_WORD(FUZZY, W_REC, "Debug fuzzy scoring (levels 1-2)"),
 273         DEBUG_WORD(GENR, W_REC, "Debug generator functions"),
 274         DEBUG_WORD(HLINK, W_SND|W_REC, "Debug hard-link actions"),
 275         DEBUG_WORD(ICONV, W_CLI|W_SRV, "Debug iconv (character conversion)"),
 276         DEBUG_WORD(OWN, W_REC, "Debug ownership changes in users & groups (levels 1-2)"),
 277         DEBUG_WORD(PROTO, W_CLI|W_SRV, "Debug protocol information"),
 278         DEBUG_WORD(RECV, W_REC, "Debug receiver functions"),
 279         DEBUG_WORD(SEND, W_SND, "Debug sender functions"),
 280         DEBUG_WORD(TIME, W_REC, "Debug setting of modified times (levels 1-2)"),
 281         { NULL, "--debug", 0, 0, 0, 0 }
 282 };
 283
 284 static int verbose = 0;
 285 static int do_stats = 0;
 286 static int do_progress = 0;
 287 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 288 static int omit_dir_times = 0;
 289 static int F_option_cnt = 0;
 290 static int modify_window_set;
 291 static int itemize_changes = 0;
 292 static int refused_delete, refused_archive_part, refused_compress;
 293 static int refused_partial, refused_progress, refused_delete_before;
 294 static int refused_delete_during;
 295 static int refused_inplace, refused_no_iconv;
 296 static char *max_size_arg, *min_size_arg;
 297 static char tmp_partialdir[] = ".~tmp~";
 298
 299 /** Local address to bind.  As a character string because it's
 300  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 301  * address, or a hostname. **/
 302 char *bind_address;
 303
 304 static void output_item_help(struct output_struct *words);
 305
 306 /* This constructs a string that represents all the options set for either
 307  * the --info or --debug setting, skipping any implied options (by -v, etc.).
 308  * This is used both when conveying the user's options to the server, and
 309  * when the help output wants to tell the user what options are implied. */
 310 static char *make_output_option(struct output_struct *words, short *levels, uchar where)
 311 {
 312         char *str = words == info_words ? "--info=" : "--debug=";
 313         int j, counts[MAX_OUT_LEVEL+1], pos, skipped = 0, len = 0, max = 0, lev = 0;
 314         int word_count = words == info_words ? COUNT_INFO : COUNT_DEBUG;
 315         char *buf;
 316
 317         memset(counts, 0, sizeof counts);
 318
 319         for (j = 0; words[j].name; j++) {
 320                 if (words[j].flag != j) {
 321                         rprintf(FERROR, "rsync: internal error on %s%s: %d != %d\n",
 322                                 words == info_words ? "INFO_" : "DEBUG_",
 323                                 words[j].name, words[j].flag, j);
 324                         exit_cleanup(RERR_UNSUPPORTED);
 325                 }
 326                 if (!(words[j].where & where))
 327                         continue;
 328                 if (words[j].priority == DEFAULT_PRIORITY) {
 329                         /* Implied items don't need to be mentioned. */
 330                         skipped++;
 331                         continue;
 332                 }
 333                 len += len ? 1 : strlen(str);
 334                 len += strlen(words[j].name);
 335                 len += levels[j] == 1 ? 0 : 1;
 336
 337                 if (words[j].priority == HELP_PRIORITY)
 338                         continue; /* no abbreviating for help */
 339
 340                 assert(levels[j] <= MAX_OUT_LEVEL);
 341                 if (++counts[levels[j]] > max) {
 342                         /* Determine which level has the most items. */
 343                         lev = levels[j];
 344                         max = counts[lev];
 345                 }
 346         }
 347
 348         /* Sanity check the COUNT_* define against the length of the table. */
 349         if (j != word_count) {
 350                 rprintf(FERROR, "rsync: internal error: %s is wrong! (%d != %d)\n",
 351                         words == info_words ? "COUNT_INFO" : "COUNT_DEBUG",
 352                         j, word_count);
 353                 exit_cleanup(RERR_UNSUPPORTED);
 354         }
 355
 356         if (!len)
 357                 return NULL;
 358
 359         len++;
 360         if (!(buf = new_array(char, len)))
 361                 out_of_memory("make_output_option");
 362         pos = 0;
 363
 364         if (skipped || max < 5)
 365                 lev = -1;
 366         else {
 367                 if (lev == 0)
 368                         pos += snprintf(buf, len, "%sNONE", str);
 369                 else if (lev == 1)
 370                         pos += snprintf(buf, len, "%sALL", str);
 371                 else
 372                         pos += snprintf(buf, len, "%sALL%d", str, lev);
 373         }
 374
 375         for (j = 0; words[j].name && pos < len; j++) {
 376                 if (words[j].priority == DEFAULT_PRIORITY || levels[j] == lev || !(words[j].where & where))
 377                         continue;
 378                 if (pos)
 379                         buf[pos++] = ',';
 380                 else
 381                         pos += strlcpy(buf+pos, str, len-pos);
 382                 if (pos < len)
 383                         pos += strlcpy(buf+pos, words[j].name, len-pos);
 384                 /* Level 1 is implied by the name alone. */
 385                 if (levels[j] != 1 && pos < len)
 386                         buf[pos++] = '0' + levels[j];
 387         }
 388
 389         buf[pos] = '\0';
 390
 391         return buf;
 392 }
 393
 394 static void parse_output_words(struct output_struct *words, short *levels,
 395                                const char *str, uchar priority)
 396 {
 397         const char *s;
 398         int j, len, lev;
 399
 400         if (!str)
 401                 return;
 402
 403         while (*str) {
 404                 if ((s = strchr(str, ',')) != NULL)
 405                         len = s++ - str;
 406                 else
 407                         len = strlen(str);
 408                 while (len && isDigit(str+len-1))
 409                         len--;
 410                 lev = isDigit(str+len) ? atoi(str+len) : 1;
 411                 if (lev > MAX_OUT_LEVEL)
 412                         lev = MAX_OUT_LEVEL;
 413                 if (len == 4 && strncasecmp(str, "help", 4) == 0) {
 414                         output_item_help(words);
 415                         exit_cleanup(0);
 416                 }
 417                 if (len == 4 && strncasecmp(str, "none", 4) == 0)
 418                         len = lev = 0;
 419                 else if (len == 3 && strncasecmp(str, "all", 3) == 0)
 420                         len = 0;
 421                 for (j = 0; words[j].name; j++) {
 422                         if (!len
 423                          || (len == words[j].namelen && strncasecmp(str, words[j].name, len) == 0)) {
 424                                 if (priority >= words[j].priority) {
 425                                         words[j].priority = priority;
 426                                         levels[j] = lev;
 427                                 }
 428                                 if (len)
 429                                         break;
 430                         }
 431                 }
 432                 if (len && !words[j].name) {
 433                         rprintf(FERROR, "Unknown %s item: \"%.*s\"\n",
 434                                 words[j].help, len, str);
 435                         exit_cleanup(RERR_SYNTAX);
 436                 }
 437                 if (!s)
 438                         break;
 439                 str = s;
 440         }
 441 }
 442
 443 /* Tell the user what all the info or debug flags mean. */
 444 static void output_item_help(struct output_struct *words)
 445 {
 446         short *levels = words == info_words ? info_levels : debug_levels;
 447         const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
 448         char buf[128], *opt, *fmt = "%-10s %s\n";
 449         int j;
 450
 451         reset_output_levels();
 452
 453         rprintf(FINFO, "Use OPT or OPT1 for level 1 output, OPT2 for level 2, etc.; OPT0 silences.\n");
 454         rprintf(FINFO, "\n");
 455         for (j = 0; words[j].name; j++)
 456                 rprintf(FINFO, fmt, words[j].name, words[j].help);
 457         rprintf(FINFO, "\n");
 458
 459         snprintf(buf, sizeof buf, "Set all %s options (e.g. all%d)",
 460                  words[j].help, MAX_OUT_LEVEL);
 461         rprintf(FINFO, fmt, "ALL", buf);
 462
 463         snprintf(buf, sizeof buf, "Silence all %s options (same as all0)",
 464                  words[j].help);
 465         rprintf(FINFO, fmt, "NONE", buf);
 466
 467         rprintf(FINFO, fmt, "HELP", "Output this help message");
 468         rprintf(FINFO, "\n");
 469         rprintf(FINFO, "Options added for each increase in verbose level:\n");
 470
 471         for (j = 1; j <= MAX_VERBOSITY; j++) {
 472                 parse_output_words(words, levels, verbosity[j], HELP_PRIORITY);
 473                 opt = make_output_option(words, levels, W_CLI|W_SRV|W_SND|W_REC);
 474                 if (opt) {
 475                         rprintf(FINFO, "%d) %s\n", j, strchr(opt, '=')+1);
 476                         free(opt);
 477                 }
 478                 reset_output_levels();
 479         }
 480 }
 481
 482 /* The --verbose option now sets info+debug flags. */
 483 static void set_output_verbosity(int level, uchar priority)
 484 {
 485         int j;
 486
 487         if (level > MAX_VERBOSITY)
 488                 level = MAX_VERBOSITY;
 489
 490         for (j = 1; j <= level; j++) {
 491                 parse_output_words(info_words, info_levels, info_verbosity[j], priority);
 492                 parse_output_words(debug_words, debug_levels, debug_verbosity[j], priority);
 493         }
 494 }
 495
 496 /* Limit the info+debug flag levels given a verbose-option level limit. */
 497 void limit_output_verbosity(int level)
 498 {
 499         short info_limits[COUNT_INFO], debug_limits[COUNT_DEBUG];
 500         int j;
 501
 502         if (level > MAX_VERBOSITY)
 503                 return;
 504
 505         memset(info_limits, 0, sizeof info_limits);
 506         memset(debug_limits, 0, sizeof debug_limits);
 507
 508         /* Compute the level limits in the above arrays. */
 509         for (j = 1; j <= level; j++) {
 510                 parse_output_words(info_words, info_limits, info_verbosity[j], LIMIT_PRIORITY);
 511                 parse_output_words(debug_words, debug_limits, debug_verbosity[j], LIMIT_PRIORITY);
 512         }
 513
 514         for (j = 0; j < COUNT_INFO; j++) {
 515                 if (info_levels[j] > info_limits[j])
 516                         info_levels[j] = info_limits[j];
 517         }
 518
 519         for (j = 0; j < COUNT_DEBUG; j++) {
 520                 if (debug_levels[j] > debug_limits[j])
 521                         debug_levels[j] = debug_limits[j];
 522         }
 523 }
 524
 525 void reset_output_levels(void)
 526 {
 527         int j;
 528
 529         memset(info_levels, 0, sizeof info_levels);
 530         memset(debug_levels, 0, sizeof debug_levels);
 531
 532         for (j = 0; j < COUNT_INFO; j++)
 533                 info_words[j].priority = DEFAULT_PRIORITY;
 534
 535         for (j = 0; j < COUNT_DEBUG; j++)
 536                 debug_words[j].priority = DEFAULT_PRIORITY;
 537 }
 538
 539 void negate_output_levels(void)
 540 {
 541         int j;
 542
 543         for (j = 0; j < COUNT_INFO; j++)
 544                 info_levels[j] *= -1;
 545
 546         for (j = 0; j < COUNT_DEBUG; j++)
 547                 debug_levels[j] *= -1;
 548 }
 549
 550 static void print_rsync_version(enum logcode f)
 551 {
 552         char *subprotocol = "";
 553         char const *got_socketpair = "no ";
 554         char const *have_inplace = "no ";
 555         char const *hardlinks = "no ";
 556         char const *symtimes = "no ";
 557         char const *acls = "no ";
 558         char const *xattrs = "no ";
 559         char const *links = "no ";
 560         char const *iconv = "no ";
 561         char const *ipv6 = "no ";
 562         STRUCT_STAT *dumstat;
 563
 564 #if SUBPROTOCOL_VERSION != 0
 565         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
 566 #endif
 567 #ifdef HAVE_SOCKETPAIR
 568         got_socketpair = "";
 569 #endif
 570 #ifdef HAVE_FTRUNCATE
 571         have_inplace = "";
 572 #endif
 573 #ifdef SUPPORT_HARD_LINKS
 574         hardlinks = "";
 575 #endif
 576 #ifdef SUPPORT_ACLS
 577         acls = "";
 578 #endif
 579 #ifdef SUPPORT_XATTRS
 580         xattrs = "";
 581 #endif
 582 #ifdef SUPPORT_LINKS
 583         links = "";
 584 #endif
 585 #ifdef INET6
 586         ipv6 = "";
 587 #endif
 588 #ifdef ICONV_OPTION
 589         iconv = "";
 590 #endif
 591 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
 592         symtimes = "";
 593 #endif
 594
 595         rprintf(f, "%s  version %s  protocol version %d%s\n",
 596                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 597         rprintf(f, "Copyright (C) 1996-2008 by Andrew Tridgell, Wayne Davison, and others.\n");
 598         rprintf(f, "Web site: http://rsync.samba.org/\n");
 599         rprintf(f, "Capabilities:\n");
 600         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 601                 (int)(sizeof (OFF_T) * 8),
 602                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 603                 (int)(sizeof (time_t) * 8),
 604                 (int)(sizeof (int64) * 8));
 605         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 606                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 607         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
 608                 have_inplace, acls, xattrs, iconv, symtimes);
 609
 610 #ifdef MAINTAINER_MODE
 611         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 612 #endif
 613
 614 #if SIZEOF_INT64 < 8
 615         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 616 #endif
 617         if (sizeof (int64) != SIZEOF_INT64) {
 618                 rprintf(f,
 619                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 620                         (int) SIZEOF_INT64, (int) sizeof (int64));
 621         }
 622
 623         rprintf(f,"\n");
 624         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 625         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 626         rprintf(f,"General Public Licence for details.\n");
 627 }
 628
 629
 630 void usage(enum logcode F)
 631 {
 632   print_rsync_version(F);
 633
 634   rprintf(F,"\n");
 635   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 636   rprintf(F,"via a fast differencing algorithm.\n");
 637
 638   rprintf(F,"\n");
 639   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 640   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 641   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 642   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 643   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 644   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 645   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 646   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 647   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 648   rprintf(F,"\n");
 649   rprintf(F,"Options\n");
 650   rprintf(F," -v, --verbose               increase verbosity\n");
 651   rprintf(F,"     --info=FLAGS            fine-grained informational verbosity\n");
 652   rprintf(F,"     --debug=FLAGS           fine-grained debug verbosity\n");
 653   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 654   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 655   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 656   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 657   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 658   rprintf(F," -r, --recursive             recurse into directories\n");
 659   rprintf(F," -R, --relative              use relative path names\n");
 660   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 661   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 662   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 663   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 664   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 665   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 666   rprintf(F,"     --append                append data onto shorter files\n");
 667   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 668   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 669   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 670   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 671   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 672   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 673   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 674   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 675   rprintf(F," -H, --hard-links            preserve hard links\n");
 676   rprintf(F," -p, --perms                 preserve permissions\n");
 677   rprintf(F," -E, --executability         preserve the file's executability\n");
 678   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 679 #ifdef SUPPORT_ACLS
 680   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 681 #endif
 682 #ifdef SUPPORT_XATTRS
 683   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 684 #endif
 685   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 686   rprintf(F," -g, --group                 preserve group\n");
 687   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 688   rprintf(F,"     --specials              preserve special files\n");
 689   rprintf(F," -D                          same as --devices --specials\n");
 690   rprintf(F," -t, --times                 preserve modification times\n");
 691   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 692   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 693 #ifdef SUPPORT_XATTRS
 694   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 695 #endif
 696   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 697   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 698   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 699   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 700   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 701   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 702   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 703   rprintf(F,"     --existing              skip creating new files on receiver\n");
 704   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 705   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 706   rprintf(F,"     --del                   an alias for --delete-during\n");
 707   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 708   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 709   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
 710   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 711   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 712   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 713   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 714   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 715   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 716   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 717   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 718   rprintf(F,"     --partial               keep partially transferred files\n");
 719   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 720   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 721   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 722   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 723   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 724   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 725   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 726   rprintf(F," -M, --remote-option=OPTION  send OPTION to the remote side only\n");
 727   rprintf(F,"     --size-only             skip files that match in size\n");
 728   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 729   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 730   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 731   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 732   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 733   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 734   rprintf(F," -z, --compress              compress file data during the transfer\n");
 735   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 736   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 737   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 738   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 739   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 740   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 741   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 742   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 743   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 744   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 745   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 746   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 747   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 748   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 749   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 750   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 751   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 752   rprintf(F,"     --stats                 give some file-transfer stats\n");
 753   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 754   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 755   rprintf(F,"     --progress              show progress during transfer\n");
 756   rprintf(F," -P                          same as --partial --progress\n");
 757   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 758   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 759   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 760   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 761   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 762   rprintf(F,"     --list-only             list the files instead of copying them\n");
 763   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 764   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 765   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 766   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 767   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 768 #ifdef ICONV_OPTION
 769   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 770 #endif
 771   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 772   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 773   rprintf(F,"     --version               print version number\n");
 774   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 775
 776   rprintf(F,"\n");
 777   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 778   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 779   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 780 }
 781
 782 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 783       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 784       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 785       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 786       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV, OPT_INFO, OPT_DEBUG,
 787       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 788
 789 static struct poptOption long_options[] = {
 790   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 791   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 792   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 793   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 794   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 795   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 796   {"info",             0,  POPT_ARG_STRING, 0, OPT_INFO, 0, 0 },
 797   {"debug",            0,  POPT_ARG_STRING, 0, OPT_DEBUG, 0, 0 },
 798   {"msgs2stderr",      0,  POPT_ARG_NONE,   &msgs2stderr, 0, 0, 0 },
 799   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 800   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 801   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 802   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 803   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 804   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 805   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 806   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 807   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 808   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 809   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 810   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 811   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 812   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 813   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 814   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 815   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 816   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 817   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 818   {"old-dirs",         0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 819   {"old-d",            0,  POPT_ARG_VAL,    &xfer_dirs, 4, 0, 0 },
 820   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 821   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 822   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 823   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 824   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 825   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 826   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 827   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 828   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 829   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 830   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
 831   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 832   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 833   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 834   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 835   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 836   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 837   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 838   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 839   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 840   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 841   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 842   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 843   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 844   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 845   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 846   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 847   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 848   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 849   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 850   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 851   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 852   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 853   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 854   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 855   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 856   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 857   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 858   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 859   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 860   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 861   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 862   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 863   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 864   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 865   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 866   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 867   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 868   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 869   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 870   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 871   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 872   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 873   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 874   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
 875   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 876   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 877   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 878   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 879   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 880   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 881   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 882   {"sparse",          'S', POPT_ARG_VAL,    &sparse_files, 1, 0, 0 },
 883   {"no-sparse",        0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 884   {"no-S",             0,  POPT_ARG_VAL,    &sparse_files, 0, 0, 0 },
 885   {"inplace",          0,  POPT_ARG_VAL,    &inplace, 1, 0, 0 },
 886   {"no-inplace",       0,  POPT_ARG_VAL,    &inplace, 0, 0, 0 },
 887   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 888   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 889   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 890   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 891   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 892   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 893   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 894   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 895   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 896   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 897   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 898   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 899   {"force",            0,  POPT_ARG_VAL,    &force_delete, 1, 0, 0 },
 900   {"no-force",         0,  POPT_ARG_VAL,    &force_delete, 0, 0, 0 },
 901   {"ignore-errors",    0,  POPT_ARG_VAL,    &ignore_errors, 1, 0, 0 },
 902   {"no-ignore-errors", 0,  POPT_ARG_VAL,    &ignore_errors, 0, 0, 0 },
 903   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 904   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 905   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 906   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 907   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 908   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 909   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 910   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 911   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 912   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 913   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 914   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 915   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 916   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 917   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 918   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 919   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 920   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 921   {"fuzzy",           'y', POPT_ARG_VAL,    &fuzzy_basis, 1, 0, 0 },
 922   {"no-fuzzy",         0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 923   {"no-y",             0,  POPT_ARG_VAL,    &fuzzy_basis, 0, 0, 0 },
 924   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 925   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 926   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 927   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 928   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 929   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 930   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 931   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 932   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 933   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 934   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 935   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 936   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 937   {"prune-empty-dirs",'m', POPT_ARG_VAL,    &prune_empty_dirs, 1, 0, 0 },
 938   {"no-prune-empty-dirs",0,POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 939   {"no-m",             0,  POPT_ARG_VAL,    &prune_empty_dirs, 0, 0, 0 },
 940   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 941   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 942   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 943   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 944   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 945   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 946   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 947   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 948   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 949   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 950   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 951   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 952   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 953   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 954   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 955   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 956   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 957   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 958   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 959   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 960   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 961   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 962   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 963   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
 964   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
 965   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 966   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
 967   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
 968   {"no-contimeout",    0,  POPT_ARG_VAL,    &connect_timeout, 0, 0, 0 },
 969   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 970   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 971   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 972 #ifdef ICONV_OPTION
 973   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
 974   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
 975 #endif
 976   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 977   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 978   {"8-bit-output",    '8', POPT_ARG_VAL,    &allow_8bit_chars, 1, 0, 0 },
 979   {"no-8-bit-output",  0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 980   {"no-8",             0,  POPT_ARG_VAL,    &allow_8bit_chars, 0, 0, 0 },
 981   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
 982   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 983   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 984   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 985   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 986   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 987   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 988   {"remote-option",   'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
 989   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 990   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 991   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 992   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 993   /* All the following options switch us into daemon-mode option-parsing. */
 994   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 995   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 996   {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 997   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 998   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 999   {0,0,0,0, 0, 0, 0}
1000 };
1001
1002 static void daemon_usage(enum logcode F)
1003 {
1004   print_rsync_version(F);
1005
1006   rprintf(F,"\n");
1007   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
1008   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
1009   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
1010   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
1011   rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
1012   rprintf(F,"     --no-detach             do not detach from the parent\n");
1013   rprintf(F,"     --port=PORT             listen on alternate port number\n");
1014   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
1015   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
1016   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
1017   rprintf(F," -v, --verbose               increase verbosity\n");
1018   rprintf(F," -4, --ipv4                  prefer IPv4\n");
1019   rprintf(F," -6, --ipv6                  prefer IPv6\n");
1020   rprintf(F,"     --help                  show this help screen\n");
1021
1022   rprintf(F,"\n");
1023   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
1024   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
1025 }
1026
1027 static struct poptOption long_daemon_options[] = {
1028   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
1029   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
1030   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
1031   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
1032   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
1033   {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
1034   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
1035   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
1036   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
1037   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
1038   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
1039   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
1040   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
1041   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
1042   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
1043   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
1044   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
1045   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
1046   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1047   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
1048   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
1049   {0,0,0,0, 0, 0, 0}
1050 };
1051
1052
1053 static char err_buf[200];
1054
1055
1056 /**
1057  * Store the option error message, if any, so that we can log the
1058  * connection attempt (which requires parsing the options), and then
1059  * show the error later on.
1060  **/
1061 void option_error(void)
1062 {
1063         if (!err_buf[0]) {
1064                 strlcpy(err_buf, "Error parsing options: option may "
1065                         "be supported on client but not on server?\n",
1066                         sizeof err_buf);
1067         }
1068
1069         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
1070         msleep(20);
1071 }
1072
1073
1074 /**
1075  * Tweak the option table to disable all options that the rsyncd.conf
1076  * file has told us to refuse.
1077  **/
1078 static void set_refuse_options(char *bp)
1079 {
1080         struct poptOption *op;
1081         char *cp, shortname[2];
1082         int is_wild, found_match;
1083
1084         shortname[1] = '\0';
1085
1086         while (1) {
1087                 while (*bp == ' ') bp++;
1088                 if (!*bp)
1089                         break;
1090                 if ((cp = strchr(bp, ' ')) != NULL)
1091                         *cp= '\0';
1092                 is_wild = strpbrk(bp, "*?[") != NULL;
1093                 found_match = 0;
1094                 for (op = long_options; ; op++) {
1095                         *shortname = op->shortName;
1096                         if (!op->longName && !*shortname)
1097                                 break;
1098                         if ((op->longName && wildmatch(bp, op->longName))
1099                             || (*shortname && wildmatch(bp, shortname))) {
1100                                 if (op->argInfo == POPT_ARG_VAL)
1101                                         op->argInfo = POPT_ARG_NONE;
1102                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
1103                                 found_match = 1;
1104                                 /* These flags are set to let us easily check
1105                                  * an implied option later in the code. */
1106                                 switch (*shortname) {
1107                                 case 'r': case 'd': case 'l': case 'p':
1108                                 case 't': case 'g': case 'o': case 'D':
1109                                         refused_archive_part = op->val;
1110                                         break;
1111                                 case 'z':
1112                                         refused_compress = op->val;
1113                                         break;
1114                                 case '\0':
1115                                         if (wildmatch("delete", op->longName))
1116                                                 refused_delete = op->val;
1117                                         else if (wildmatch("delete-before", op->longName))
1118                                                 refused_delete_before = op->val;
1119                                         else if (wildmatch("delete-during", op->longName))
1120                                                 refused_delete_during = op->val;
1121                                         else if (wildmatch("partial", op->longName))
1122                                                 refused_partial = op->val;
1123                                         else if (wildmatch("progress", op->longName))
1124                                                 refused_progress = op->val;
1125                                         else if (wildmatch("inplace", op->longName))
1126                                                 refused_inplace = op->val;
1127                                         else if (wildmatch("no-iconv", op->longName))
1128                                                 refused_no_iconv = op->val;
1129                                         break;
1130                                 }
1131                                 if (!is_wild)
1132                                         break;
1133                         }
1134                 }
1135                 if (!found_match) {
1136                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
1137                                 bp);
1138                 }
1139                 if (!cp)
1140                         break;
1141                 *cp = ' ';
1142                 bp = cp + 1;
1143         }
1144 }
1145
1146
1147 static int count_args(const char **argv)
1148 {
1149         int i = 0;
1150
1151         if (argv) {
1152                 while (argv[i] != NULL)
1153                         i++;
1154         }
1155
1156         return i;
1157 }
1158
1159
1160 static OFF_T parse_size_arg(char **size_arg, char def_suf)
1161 {
1162         int reps, mult, make_compatible = 0;
1163         const char *arg;
1164         OFF_T size = 1;
1165
1166         for (arg = *size_arg; isDigit(arg); arg++) {}
1167         if (*arg == '.')
1168                 for (arg++; isDigit(arg); arg++) {}
1169         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
1170         case 'b': case 'B':
1171                 reps = 0;
1172                 break;
1173         case 'k': case 'K':
1174                 reps = 1;
1175                 break;
1176         case 'm': case 'M':
1177                 reps = 2;
1178                 break;
1179         case 'g': case 'G':
1180                 reps = 3;
1181                 break;
1182         default:
1183                 return -1;
1184         }
1185         if (*arg == 'b' || *arg == 'B')
1186                 mult = 1000, make_compatible = 1, arg++;
1187         else if (!*arg || *arg == '+' || *arg == '-')
1188                 mult = 1024;
1189         else if (strncasecmp(arg, "ib", 2) == 0)
1190                 mult = 1024, arg += 2;
1191         else
1192                 return -1;
1193         while (reps--)
1194                 size *= mult;
1195         size *= atof(*size_arg);
1196         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
1197                 size += atoi(arg), make_compatible = 1, arg += 2;
1198         if (*arg)
1199                 return -1;
1200         if (size > 0 && make_compatible) {
1201                 /* We convert this manually because we may need %lld precision,
1202                  * and that's not a portable sprintf() escape. */
1203                 char buf[128], *s = buf + sizeof buf - 1;
1204                 OFF_T num = size;
1205                 *s = '\0';
1206                 while (num) {
1207                         *--s = (char)(num % 10) + '0';
1208                         num /= 10;
1209                 }
1210                 if (!(*size_arg = strdup(s)))
1211                         out_of_memory("parse_size_arg");
1212         }
1213         return size;
1214 }
1215
1216
1217 static void create_refuse_error(int which)
1218 {
1219         /* The "which" value is the index + OPT_REFUSED_BASE. */
1220         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
1221         int n = snprintf(err_buf, sizeof err_buf,
1222                          "The server is configured to refuse --%s\n",
1223                          op->longName) - 1;
1224         if (op->shortName) {
1225                 snprintf(err_buf + n, sizeof err_buf - n,
1226                          " (-%c)\n", op->shortName);
1227         }
1228 }
1229
1230
1231 /**
1232  * Process command line arguments.  Called on both local and remote.
1233  *
1234  * @retval 1 if all options are OK; with globals set to appropriate
1235  * values
1236  *
1237  * @retval 0 on error, with err_buf containing an explanation
1238  **/
1239 int parse_arguments(int *argc_p, const char ***argv_p)
1240 {
1241         static poptContext pc;
1242         char *ref = lp_refuse_options(module_id);
1243         const char *arg, **argv = *argv_p;
1244         int argc = *argc_p;
1245         int opt;
1246
1247         if (ref && *ref)
1248                 set_refuse_options(ref);
1249         if (am_daemon) {
1250                 set_refuse_options("log-file*");
1251 #ifdef ICONV_OPTION
1252                 if (!*lp_charset(module_id))
1253                         set_refuse_options("iconv");
1254 #endif
1255         }
1256
1257 #ifdef ICONV_OPTION
1258         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
1259                 iconv_opt = strdup(arg);
1260 #endif
1261
1262         /* TODO: Call poptReadDefaultConfig; handle errors. */
1263
1264         /* The context leaks in case of an error, but if there's a
1265          * problem we always exit anyhow. */
1266         if (pc)
1267                 poptFreeContext(pc);
1268         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
1269         if (!am_server)
1270                 poptReadDefaultConfig(pc, 0);
1271
1272         while ((opt = poptGetNextOpt(pc)) != -1) {
1273                 /* most options are handled automatically by popt;
1274                  * only special cases are returned and listed here. */
1275
1276                 switch (opt) {
1277                 case OPT_VERSION:
1278                         print_rsync_version(FINFO);
1279                         exit_cleanup(0);
1280
1281                 case OPT_SERVER:
1282                         if (!am_server) {
1283                                 /* Disable popt aliases on the server side and
1284                                  * then start parsing the options again. */
1285                                 poptFreeContext(pc);
1286                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
1287                                                     long_options, 0);
1288                                 am_server = 1;
1289                         }
1290 #ifdef ICONV_OPTION
1291                         iconv_opt = NULL;
1292 #endif
1293                         break;
1294
1295                 case OPT_SENDER:
1296                         if (!am_server) {
1297                                 usage(FERROR);
1298                                 exit_cleanup(RERR_SYNTAX);
1299                         }
1300                         am_sender = 1;
1301                         break;
1302
1303                 case OPT_DAEMON:
1304                         if (am_daemon) {
1305                                 strlcpy(err_buf,
1306                                         "Attempt to hack rsync thwarted!\n",
1307                                         sizeof err_buf);
1308                                 return 0;
1309                         }
1310 #ifdef ICONV_OPTION
1311                         iconv_opt = NULL;
1312 #endif
1313                         poptFreeContext(pc);
1314                         pc = poptGetContext(RSYNC_NAME, argc, argv,
1315                                             long_daemon_options, 0);
1316                         while ((opt = poptGetNextOpt(pc)) != -1) {
1317                                 char **cpp;
1318                                 switch (opt) {
1319                                 case 'h':
1320                                         daemon_usage(FINFO);
1321                                         exit_cleanup(0);
1322
1323                                 case 'M':
1324                                         arg = poptGetOptArg(pc);
1325                                         if (!strchr(arg, '=')) {
1326                                                 rprintf(FERROR,
1327                                                     "--dparam value is missing an '=': %s\n",
1328                                                     arg);
1329                                                 goto daemon_error;
1330                                         }
1331                                         cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
1332                                         *cpp = strdup(arg);
1333                                         break;
1334
1335                                 case 'v':
1336                                         verbose++;
1337                                         break;
1338
1339                                 default:
1340                                         rprintf(FERROR,
1341                                             "rsync: %s: %s (in daemon mode)\n",
1342                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1343                                             poptStrerror(opt));
1344                                         goto daemon_error;
1345                                 }
1346                         }
1347
1348                         if (dparam_list.count && !set_dparams(1))
1349                                 exit_cleanup(RERR_SYNTAX);
1350
1351                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1352                                 snprintf(err_buf, sizeof err_buf,
1353                                          "the --temp-dir path is WAY too long.\n");
1354                                 return 0;
1355                         }
1356
1357                         if (!daemon_opt) {
1358                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
1359                             daemon_error:
1360                                 rprintf(FERROR,
1361                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
1362                                 exit_cleanup(RERR_SYNTAX);
1363                         }
1364
1365                         *argv_p = argv = poptGetArgs(pc);
1366                         *argc_p = argc = count_args(argv);
1367                         am_starting_up = 0;
1368                         daemon_opt = 0;
1369                         am_daemon = 1;
1370                         return 1;
1371
1372                 case OPT_MODIFY_WINDOW:
1373                         /* The value has already been set by popt, but
1374                          * we need to remember that we're using a
1375                          * non-default setting. */
1376                         modify_window_set = 1;
1377                         break;
1378
1379                 case OPT_FILTER:
1380                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1381                         break;
1382
1383                 case OPT_EXCLUDE:
1384                         parse_rule(&filter_list, poptGetOptArg(pc),
1385                                    0, XFLG_OLD_PREFIXES);
1386                         break;
1387
1388                 case OPT_INCLUDE:
1389                         parse_rule(&filter_list, poptGetOptArg(pc),
1390                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1391                         break;
1392
1393                 case OPT_EXCLUDE_FROM:
1394                 case OPT_INCLUDE_FROM:
1395                         arg = poptGetOptArg(pc);
1396                         if (sanitize_paths)
1397                                 arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
1398                         if (daemon_filter_list.head) {
1399                                 int rej;
1400                                 char *dir, *cp = strdup(arg);
1401                                 if (!cp)
1402                                         out_of_memory("parse_arguments");
1403                                 if (!*cp)
1404                                         goto options_rejected;
1405                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1406                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1407                                 rej = check_filter(&daemon_filter_list, FLOG, dir, 0) < 0;
1408                                 free(cp);
1409                                 if (rej)
1410                                         goto options_rejected;
1411                         }
1412                         parse_filter_file(&filter_list, arg,
1413                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1414                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1415                         break;
1416
1417                 case 'a':
1418                         if (refused_archive_part) {
1419                                 create_refuse_error(refused_archive_part);
1420                                 return 0;
1421                         }
1422                         if (!recurse) /* preserve recurse == 2 */
1423                                 recurse = 1;
1424 #ifdef SUPPORT_LINKS
1425                         preserve_links = 1;
1426 #endif
1427                         preserve_perms = 1;
1428                         preserve_times = 2;
1429                         preserve_gid = 1;
1430                         preserve_uid = 1;
1431                         preserve_devices = 1;
1432                         preserve_specials = 1;
1433                         break;
1434
1435                 case 'D':
1436                         preserve_devices = preserve_specials = 1;
1437                         break;
1438
1439                 case OPT_NO_D:
1440                         preserve_devices = preserve_specials = 0;
1441                         break;
1442
1443                 case 'h':
1444                         human_readable++;
1445                         break;
1446
1447                 case 'H':
1448                         preserve_hard_links++;
1449                         break;
1450
1451                 case 'i':
1452                         itemize_changes++;
1453                         break;
1454
1455                 case 'v':
1456                         verbose++;
1457                         break;
1458
1459                 case 'q':
1460                         quiet++;
1461                         break;
1462
1463                 case 'x':
1464                         one_file_system++;
1465                         break;
1466
1467                 case 'F':
1468                         switch (++F_option_cnt) {
1469                         case 1:
1470                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1471                                 break;
1472                         case 2:
1473                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1474                                 break;
1475                         }
1476                         break;
1477
1478                 case 'P':
1479                         if (refused_partial || refused_progress) {
1480                                 create_refuse_error(refused_partial
1481                                     ? refused_partial : refused_progress);
1482                                 return 0;
1483                         }
1484                         do_progress = 1;
1485                         keep_partial = 1;
1486                         break;
1487
1488                 case 'z':
1489                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1490                          || def_compress_level > Z_BEST_COMPRESSION) {
1491                                 snprintf(err_buf, sizeof err_buf,
1492                                         "--compress-level value is invalid: %d\n",
1493                                         def_compress_level);
1494                                 return 0;
1495                         }
1496                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1497                         if (do_compression && refused_compress) {
1498                                 create_refuse_error(refused_compress);
1499                                 return 0;
1500                         }
1501                         break;
1502
1503                 case 'M':
1504                         arg = poptGetOptArg(pc);
1505                         if (*arg != '-') {
1506                                 snprintf(err_buf, sizeof err_buf,
1507                                         "Remote option must start with a dash: %s\n", arg);
1508                                 return 0;
1509                         }
1510                         if (remote_option_cnt+2 >= remote_option_alloc) {
1511                                 remote_option_alloc += 16;
1512                                 remote_options = realloc_array(remote_options,
1513                                                         const char *, remote_option_alloc);
1514                                 if (!remote_options)
1515                                         out_of_memory("parse_arguments");
1516                                 if (!remote_option_cnt)
1517                                         remote_options[0] = "ARG0";
1518                         }
1519                         remote_options[++remote_option_cnt] = arg;
1520                         remote_options[remote_option_cnt+1] = NULL;
1521                         break;
1522
1523                 case OPT_WRITE_BATCH:
1524                         /* batch_name is already set */
1525                         write_batch = 1;
1526                         break;
1527
1528                 case OPT_ONLY_WRITE_BATCH:
1529                         /* batch_name is already set */
1530                         write_batch = -1;
1531                         break;
1532
1533                 case OPT_READ_BATCH:
1534                         /* batch_name is already set */
1535                         read_batch = 1;
1536                         break;
1537
1538                 case OPT_NO_ICONV:
1539 #ifdef ICONV_OPTION
1540                         iconv_opt = NULL;
1541 #endif
1542                         break;
1543
1544                 case OPT_MAX_SIZE:
1545                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1546                                 snprintf(err_buf, sizeof err_buf,
1547                                         "--max-size value is invalid: %s\n",
1548                                         max_size_arg);
1549                                 return 0;
1550                         }
1551                         break;
1552
1553                 case OPT_MIN_SIZE:
1554                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1555                                 snprintf(err_buf, sizeof err_buf,
1556                                         "--min-size value is invalid: %s\n",
1557                                         min_size_arg);
1558                                 return 0;
1559                         }
1560                         break;
1561
1562                 case OPT_APPEND:
1563                         if (am_server)
1564                                 append_mode++;
1565                         else
1566                                 append_mode = 1;
1567                         break;
1568
1569                 case OPT_LINK_DEST:
1570 #ifdef SUPPORT_HARD_LINKS
1571                         link_dest = 1;
1572                         dest_option = "--link-dest";
1573                         goto set_dest_dir;
1574 #else
1575                         snprintf(err_buf, sizeof err_buf,
1576                                  "hard links are not supported on this %s\n",
1577                                  am_server ? "server" : "client");
1578                         return 0;
1579 #endif
1580
1581                 case OPT_COPY_DEST:
1582                         copy_dest = 1;
1583                         dest_option = "--copy-dest";
1584                         goto set_dest_dir;
1585
1586                 case OPT_COMPARE_DEST:
1587                         compare_dest = 1;
1588                         dest_option = "--compare-dest";
1589                 set_dest_dir:
1590                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1591                                 snprintf(err_buf, sizeof err_buf,
1592                                         "ERROR: at most %d %s args may be specified\n",
1593                                         MAX_BASIS_DIRS, dest_option);
1594                                 return 0;
1595                         }
1596                         /* We defer sanitizing this arg until we know what
1597                          * our destination directory is going to be. */
1598                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1599                         break;
1600
1601                 case OPT_CHMOD:
1602                         arg = poptGetOptArg(pc);
1603                         if (!parse_chmod(arg, &chmod_modes)) {
1604                                 snprintf(err_buf, sizeof err_buf,
1605                                     "Invalid argument passed to --chmod (%s)\n",
1606                                     arg);
1607                                 return 0;
1608                         }
1609                         break;
1610
1611                 case OPT_INFO:
1612                         arg = poptGetOptArg(pc);
1613                         parse_output_words(info_words, info_levels, arg, USER_PRIORITY);
1614                         break;
1615
1616                 case OPT_DEBUG:
1617                         arg = poptGetOptArg(pc);
1618                         parse_output_words(debug_words, debug_levels, arg, USER_PRIORITY);
1619                         break;
1620
1621                 case OPT_HELP:
1622                         usage(FINFO);
1623                         exit_cleanup(0);
1624
1625                 case 'A':
1626 #ifdef SUPPORT_ACLS
1627                         preserve_acls = 1;
1628                         preserve_perms = 1;
1629                         break;
1630 #else
1631                         /* FIXME: this should probably be ignored with a
1632                          * warning and then countermeasures taken to
1633                          * restrict group and other access in the presence
1634                          * of any more restrictive ACLs, but this is safe
1635                          * for now */
1636                         snprintf(err_buf,sizeof(err_buf),
1637                                  "ACLs are not supported on this %s\n",
1638                                  am_server ? "server" : "client");
1639                         return 0;
1640 #endif
1641
1642                 case 'X':
1643 #ifdef SUPPORT_XATTRS
1644                         preserve_xattrs++;
1645                         break;
1646 #else
1647                         snprintf(err_buf,sizeof(err_buf),
1648                                  "extended attributes are not supported on this %s\n",
1649                                  am_server ? "server" : "client");
1650                         return 0;
1651 #endif
1652
1653                 default:
1654                         /* A large opt value means that set_refuse_options()
1655                          * turned this option off. */
1656                         if (opt >= OPT_REFUSED_BASE) {
1657                                 create_refuse_error(opt);
1658                                 return 0;
1659                         }
1660                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1661                                  am_server ? "on remote machine: " : "",
1662                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1663                                  poptStrerror(opt));
1664                         return 0;
1665                 }
1666         }
1667
1668         if (human_readable && argc == 2 && !am_server) {
1669                 /* Allow the old meaning of 'h' (--help) on its own. */
1670                 usage(FINFO);
1671                 exit_cleanup(0);
1672         }
1673
1674         set_output_verbosity(verbose, DEFAULT_PRIORITY);
1675
1676         if (do_stats && !am_server) {
1677                 parse_output_words(info_words, info_levels,
1678                         verbose > 1 ? "stats3" : "stats2", DEFAULT_PRIORITY);
1679         }
1680
1681 #ifdef ICONV_OPTION
1682         if (iconv_opt && protect_args != 2) {
1683                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1684                         iconv_opt = NULL;
1685                 else
1686                         need_unsorted_flist = 1;
1687         }
1688         if (refused_no_iconv && !iconv_opt) {
1689                 create_refuse_error(refused_no_iconv);
1690                 return 0;
1691         }
1692 #endif
1693
1694         if (protect_args == 1 && am_server)
1695                 return 1;
1696
1697         *argv_p = argv = poptGetArgs(pc);
1698         *argc_p = argc = count_args(argv);
1699
1700 #ifndef SUPPORT_LINKS
1701         if (preserve_links && !am_sender) {
1702                 snprintf(err_buf, sizeof err_buf,
1703                          "symlinks are not supported on this %s\n",
1704                          am_server ? "server" : "client");
1705                 return 0;
1706         }
1707 #endif
1708
1709 #ifndef SUPPORT_HARD_LINKS
1710         if (preserve_hard_links) {
1711                 snprintf(err_buf, sizeof err_buf,
1712                          "hard links are not supported on this %s\n",
1713                          am_server ? "server" : "client");
1714                 return 0;
1715         }
1716 #endif
1717
1718 #ifdef SUPPORT_XATTRS
1719         if (am_root < 0 && preserve_xattrs > 1) {
1720                 snprintf(err_buf, sizeof err_buf,
1721                          "--fake-super conflicts with -XX\n");
1722                 return 0;
1723         }
1724 #else
1725         if (am_root < 0) {
1726                 snprintf(err_buf, sizeof err_buf,
1727                          "--fake-super requires an rsync with extended attributes enabled\n");
1728                 return 0;
1729         }
1730 #endif
1731
1732         if (write_batch && read_batch) {
1733                 snprintf(err_buf, sizeof err_buf,
1734                         "--write-batch and --read-batch can not be used together\n");
1735                 return 0;
1736         }
1737         if (write_batch > 0 || read_batch) {
1738                 if (am_server) {
1739                         rprintf(FINFO,
1740                                 "ignoring --%s-batch option sent to server\n",
1741                                 write_batch ? "write" : "read");
1742                         /* We don't actually exit_cleanup(), so that we can
1743                          * still service older version clients that still send
1744                          * batch args to server. */
1745                         read_batch = write_batch = 0;
1746                         batch_name = NULL;
1747                 } else if (dry_run)
1748                         write_batch = 0;
1749         } else if (write_batch < 0 && dry_run)
1750                 write_batch = 0;
1751         if (read_batch && files_from) {
1752                 snprintf(err_buf, sizeof err_buf,
1753                         "--read-batch cannot be used with --files-from\n");
1754                 return 0;
1755         }
1756         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1757                 snprintf(err_buf, sizeof err_buf,
1758                         "the batch-file name must be %d characters or less.\n",
1759                         MAX_BATCH_NAME_LEN);
1760                 return 0;
1761         }
1762
1763         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1764                 snprintf(err_buf, sizeof err_buf,
1765                          "the --temp-dir path is WAY too long.\n");
1766                 return 0;
1767         }
1768
1769         if (max_delete < 0 && max_delete != INT_MIN) {
1770                 /* Negative numbers are treated as "no deletions". */
1771                 max_delete = 0;
1772         }
1773
1774         if (compare_dest + copy_dest + link_dest > 1) {
1775                 snprintf(err_buf, sizeof err_buf,
1776                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1777                 return 0;
1778         }
1779
1780         if (files_from) {
1781                 if (recurse == 1) /* preserve recurse == 2 */
1782                         recurse = 0;
1783                 if (xfer_dirs < 0)
1784                         xfer_dirs = 1;
1785         }
1786
1787         if (argc < 2 && !read_batch && !am_server)
1788                 list_only |= 1;
1789
1790         if (xfer_dirs >= 4) {
1791                 parse_rule(&filter_list, "- /*/*", 0, 0);
1792                 recurse = xfer_dirs = 1;
1793         } else if (recurse)
1794                 xfer_dirs = 1;
1795         else if (xfer_dirs < 0)
1796                 xfer_dirs = list_only ? 1 : 0;
1797
1798         if (relative_paths < 0)
1799                 relative_paths = files_from? 1 : 0;
1800         if (!relative_paths)
1801                 implied_dirs = 0;
1802
1803         if (delete_before + !!delete_during + delete_after > 1) {
1804                 snprintf(err_buf, sizeof err_buf,
1805                         "You may not combine multiple --delete-WHEN options.\n");
1806                 return 0;
1807         }
1808         if (delete_before || delete_during || delete_after)
1809                 delete_mode = 1;
1810         else if (delete_mode || delete_excluded) {
1811                 /* Only choose now between before & during if one is refused. */
1812                 if (refused_delete_before) {
1813                         if (!refused_delete_during)
1814                                 delete_during = 1;
1815                         else {
1816                                 create_refuse_error(refused_delete_before);
1817                                 return 0;
1818                         }
1819                 } else if (refused_delete_during)
1820                         delete_before = 1;
1821                 delete_mode = 1;
1822         }
1823         if (!xfer_dirs && delete_mode) {
1824                 snprintf(err_buf, sizeof err_buf,
1825                         "--delete does not work without -r or -d.\n");
1826                 return 0;
1827         }
1828
1829         if (delete_mode && refused_delete) {
1830                 create_refuse_error(refused_delete);
1831                 return 0;
1832         }
1833
1834         if (remove_source_files) {
1835                 /* We only want to infer this refusal of --remove-source-files
1836                  * via the refusal of "delete", not any of the "delete-FOO"
1837                  * options. */
1838                 if (refused_delete && am_sender) {
1839                         create_refuse_error(refused_delete);
1840                         return 0;
1841                 }
1842                 need_messages_from_generator = 1;
1843         }
1844
1845         if (sanitize_paths) {
1846                 int i;
1847                 for (i = argc; i-- > 0; )
1848                         argv[i] = sanitize_path(NULL, argv[i], "", 0, SP_KEEP_DOT_DIRS);
1849                 if (tmpdir)
1850                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, SP_DEFAULT);
1851                 if (backup_dir)
1852                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, SP_DEFAULT);
1853         }
1854         if (daemon_filter_list.head && !am_sender) {
1855                 struct filter_list_struct *elp = &daemon_filter_list;
1856                 if (tmpdir) {
1857                         char *dir;
1858                         if (!*tmpdir)
1859                                 goto options_rejected;
1860                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1861                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1862                         if (check_filter(elp, FLOG, dir, 1) < 0)
1863                                 goto options_rejected;
1864                 }
1865                 if (backup_dir) {
1866                         char *dir;
1867                         if (!*backup_dir)
1868                                 goto options_rejected;
1869                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1870                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1871                         if (check_filter(elp, FLOG, dir, 1) < 0)
1872                                 goto options_rejected;
1873                 }
1874         }
1875
1876         if (!backup_suffix)
1877                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1878         backup_suffix_len = strlen(backup_suffix);
1879         if (strchr(backup_suffix, '/') != NULL) {
1880                 snprintf(err_buf, sizeof err_buf,
1881                         "--suffix cannot contain slashes: %s\n",
1882                         backup_suffix);
1883                 return 0;
1884         }
1885         if (backup_dir) {
1886                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1887                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1888                 if (backup_dir_remainder < 32) {
1889                         snprintf(err_buf, sizeof err_buf,
1890                                 "the --backup-dir path is WAY too long.\n");
1891                         return 0;
1892                 }
1893                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1894                         backup_dir_buf[backup_dir_len++] = '/';
1895                         backup_dir_buf[backup_dir_len] = '\0';
1896                 }
1897                 if (INFO_GTE(BACKUP, 1) && !am_sender)
1898                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1899         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1900                 snprintf(err_buf, sizeof err_buf,
1901                         "--suffix cannot be a null string without --backup-dir\n");
1902                 return 0;
1903         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1904                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1905                         "P *%s", backup_suffix);
1906                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1907         }
1908
1909         if (make_backups && !backup_dir) {
1910                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1911                 if (preserve_times > 1)
1912                         preserve_times = 1;
1913         } else if (omit_dir_times) {
1914                 if (preserve_times > 1)
1915                         preserve_times = 1;
1916         }
1917
1918         if (stdout_format) {
1919                 if (am_server && log_format_has(stdout_format, 'I'))
1920                         stdout_format_has_i = 2;
1921                 else if (log_format_has(stdout_format, 'i'))
1922                         stdout_format_has_i = itemize_changes | 1;
1923                 if (!log_format_has(stdout_format, 'b')
1924                  && !log_format_has(stdout_format, 'c')
1925                  && !log_format_has(stdout_format, 'C'))
1926                         log_before_transfer = !am_server;
1927         } else if (itemize_changes) {
1928                 stdout_format = "%i %n%L";
1929                 stdout_format_has_i = itemize_changes;
1930                 log_before_transfer = !am_server;
1931         }
1932
1933         if (do_progress && !am_server) {
1934                 if (!log_before_transfer && INFO_EQ(NAME, 0))
1935                         parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
1936                 parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
1937         }
1938
1939         if (dry_run)
1940                 do_xfers = 0;
1941
1942         set_io_timeout(io_timeout);
1943
1944         if (INFO_GTE(NAME, 1) && !stdout_format) {
1945                 stdout_format = "%n%L";
1946                 log_before_transfer = !am_server;
1947         }
1948         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1949                 stdout_format_has_o_or_i = 1;
1950
1951         if (logfile_name && !am_daemon) {
1952                 if (!logfile_format) {
1953                         logfile_format = "%i %n%L";
1954                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1955                 } else {
1956                         if (log_format_has(logfile_format, 'i'))
1957                                 logfile_format_has_i = 1;
1958                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1959                                 logfile_format_has_o_or_i = 1;
1960                 }
1961                 log_init(0);
1962         } else if (!am_daemon)
1963                 logfile_format = NULL;
1964
1965         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1966                 bwlimit = daemon_bwlimit;
1967         if (bwlimit) {
1968                 bwlimit_writemax = (size_t)bwlimit * 128;
1969                 if (bwlimit_writemax < 512)
1970                         bwlimit_writemax = 512;
1971         }
1972
1973         if (sparse_files && inplace) {
1974                 /* Note: we don't check for this below, because --append is
1975                  * OK with --sparse (as long as redos are handled right). */
1976                 snprintf(err_buf, sizeof err_buf,
1977                          "--sparse cannot be used with --inplace\n");
1978                 return 0;
1979         }
1980
1981         if (append_mode) {
1982                 if (whole_file > 0) {
1983                         snprintf(err_buf, sizeof err_buf,
1984                                  "--append cannot be used with --whole-file\n");
1985                         return 0;
1986                 }
1987                 if (refused_inplace) {
1988                         create_refuse_error(refused_inplace);
1989                         return 0;
1990                 }
1991                 inplace = 1;
1992         }
1993
1994         if (delay_updates && !partial_dir)
1995                 partial_dir = tmp_partialdir;
1996
1997         if (inplace) {
1998 #ifdef HAVE_FTRUNCATE
1999                 if (partial_dir) {
2000                         snprintf(err_buf, sizeof err_buf,
2001                                  "--%s cannot be used with --%s\n",
2002                                  append_mode ? "append" : "inplace",
2003                                  delay_updates ? "delay-updates" : "partial-dir");
2004                         return 0;
2005                 }
2006                 /* --inplace implies --partial for refusal purposes, but we
2007                  * clear the keep_partial flag for internal logic purposes. */
2008                 if (refused_partial) {
2009                         create_refuse_error(refused_partial);
2010                         return 0;
2011                 }
2012                 keep_partial = 0;
2013 #else
2014                 snprintf(err_buf, sizeof err_buf,
2015                          "--%s is not supported on this %s\n",
2016                          append_mode ? "append" : "inplace",
2017                          am_server ? "server" : "client");
2018                 return 0;
2019 #endif
2020         } else {
2021                 if (keep_partial && !partial_dir && !am_server) {
2022                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
2023                                 partial_dir = strdup(arg);
2024                 }
2025                 if (partial_dir) {
2026                         if (*partial_dir)
2027                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2028                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
2029                                 partial_dir = NULL;
2030                         if (!partial_dir && refused_partial) {
2031                                 create_refuse_error(refused_partial);
2032                                 return 0;
2033                         }
2034                         keep_partial = 1;
2035                 }
2036         }
2037
2038         if (files_from) {
2039                 char *h, *p;
2040                 int q;
2041                 if (argc > 2 || (!am_daemon && argc == 1)) {
2042                         usage(FERROR);
2043                         exit_cleanup(RERR_SYNTAX);
2044                 }
2045                 if (strcmp(files_from, "-") == 0) {
2046                         filesfrom_fd = 0;
2047                         if (am_server)
2048                                 filesfrom_host = ""; /* reading from socket */
2049                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
2050                         if (am_server) {
2051                                 snprintf(err_buf, sizeof err_buf,
2052                                         "The --files-from sent to the server cannot specify a host.\n");
2053                                 return 0;
2054                         }
2055                         files_from = p;
2056                         filesfrom_host = h;
2057                         if (strcmp(files_from, "-") == 0) {
2058                                 snprintf(err_buf, sizeof err_buf,
2059                                         "Invalid --files-from remote filename\n");
2060                                 return 0;
2061                         }
2062                 } else {
2063                         if (sanitize_paths)
2064                                 files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
2065                         if (daemon_filter_list.head) {
2066                                 char *dir;
2067                                 if (!*files_from)
2068                                         goto options_rejected;
2069                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
2070                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
2071                                 if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
2072                                         goto options_rejected;
2073                         }
2074                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
2075                         if (filesfrom_fd < 0) {
2076                                 snprintf(err_buf, sizeof err_buf,
2077                                         "failed to open files-from file %s: %s\n",
2078                                         files_from, strerror(errno));
2079                                 return 0;
2080                         }
2081                 }
2082         }
2083
2084         am_starting_up = 0;
2085
2086         return 1;
2087
2088   options_rejected:
2089         snprintf(err_buf, sizeof err_buf,
2090                 "Your options have been rejected by the server.\n");
2091         return 0;
2092 }
2093
2094
2095 /**
2096  * Construct a filtered list of options to pass through from the
2097  * client to the server.
2098  *
2099  * This involves setting options that will tell the server how to
2100  * behave, and also filtering out options that are processed only
2101  * locally.
2102  **/
2103 void server_options(char **args, int *argc_p)
2104 {
2105         static char argstr[64];
2106         int ac = *argc_p;
2107         uchar where;
2108         char *arg;
2109         int i, x;
2110
2111         /* This should always remain first on the server's command-line. */
2112         args[ac++] = "--server";
2113
2114         if (daemon_over_rsh > 0) {
2115                 args[ac++] = "--daemon";
2116                 *argc_p = ac;
2117                 /* if we're passing --daemon, we're done */
2118                 return;
2119         }
2120
2121         if (!am_sender)
2122                 args[ac++] = "--sender";
2123
2124         x = 1;
2125         argstr[0] = '-';
2126
2127         if (protect_args)
2128                 argstr[x++] = 's';
2129
2130         for (i = 0; i < verbose; i++)
2131                 argstr[x++] = 'v';
2132
2133         /* the -q option is intentionally left out */
2134         if (make_backups)
2135                 argstr[x++] = 'b';
2136         if (update_only)
2137                 argstr[x++] = 'u';
2138         if (!do_xfers) /* Note: NOT "dry_run"! */
2139                 argstr[x++] = 'n';
2140         if (preserve_links)
2141                 argstr[x++] = 'l';
2142         if ((xfer_dirs >= 2 && xfer_dirs < 4)
2143          || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
2144                 argstr[x++] = 'd';
2145         if (am_sender) {
2146                 if (keep_dirlinks)
2147                         argstr[x++] = 'K';
2148                 if (prune_empty_dirs)
2149                         argstr[x++] = 'm';
2150                 if (omit_dir_times)
2151                         argstr[x++] = 'O';
2152         } else {
2153                 if (copy_links)
2154                         argstr[x++] = 'L';
2155                 if (copy_dirlinks)
2156                         argstr[x++] = 'k';
2157         }
2158
2159         if (whole_file > 0)
2160                 argstr[x++] = 'W';
2161         /* We don't need to send --no-whole-file, because it's the
2162          * default for remote transfers, and in any case old versions
2163          * of rsync will not understand it. */
2164
2165         if (preserve_hard_links) {
2166                 argstr[x++] = 'H';
2167                 if (preserve_hard_links > 1)
2168                         argstr[x++] = 'H';
2169         }
2170         if (preserve_uid)
2171                 argstr[x++] = 'o';
2172         if (preserve_gid)
2173                 argstr[x++] = 'g';
2174         if (preserve_devices) /* ignore preserve_specials here */
2175                 argstr[x++] = 'D';
2176         if (preserve_times)
2177                 argstr[x++] = 't';
2178         if (preserve_perms)
2179                 argstr[x++] = 'p';
2180         else if (preserve_executability && am_sender)
2181                 argstr[x++] = 'E';
2182 #ifdef SUPPORT_ACLS
2183         if (preserve_acls)
2184                 argstr[x++] = 'A';
2185 #endif
2186 #ifdef SUPPORT_XATTRS
2187         if (preserve_xattrs) {
2188                 argstr[x++] = 'X';
2189                 if (preserve_xattrs > 1)
2190                         argstr[x++] = 'X';
2191         }
2192 #endif
2193         if (recurse)
2194                 argstr[x++] = 'r';
2195         if (always_checksum)
2196                 argstr[x++] = 'c';
2197         if (cvs_exclude)
2198                 argstr[x++] = 'C';
2199         if (ignore_times)
2200                 argstr[x++] = 'I';
2201         if (relative_paths)
2202                 argstr[x++] = 'R';
2203         if (one_file_system) {
2204                 argstr[x++] = 'x';
2205                 if (one_file_system > 1)
2206                         argstr[x++] = 'x';
2207         }
2208         if (sparse_files)
2209                 argstr[x++] = 'S';
2210         if (do_compression)
2211                 argstr[x++] = 'z';
2212
2213         set_allow_inc_recurse();
2214
2215         /* Checking the pre-negotiated value allows --protocol=29 override. */
2216         if (protocol_version >= 30) {
2217                 /* We make use of the -e option to let the server know about
2218                  * any pre-release protocol version && some behavior flags. */
2219                 argstr[x++] = 'e';
2220 #if SUBPROTOCOL_VERSION != 0
2221                 if (protocol_version == PROTOCOL_VERSION) {
2222                         x += snprintf(argstr+x, sizeof argstr - x,
2223                                       "%d.%d",
2224                                       PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
2225                 } else
2226 #endif
2227                         argstr[x++] = '.';
2228                 if (allow_inc_recurse)
2229                         argstr[x++] = 'i';
2230 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
2231                 argstr[x++] = 'L';
2232 #endif
2233         }
2234
2235         if (x >= (int)sizeof argstr) { /* Not possible... */
2236                 rprintf(FERROR, "argstr overflow in server_options().\n");
2237                 exit_cleanup(RERR_MALLOC);
2238         }
2239
2240         argstr[x] = '\0';
2241
2242         args[ac++] = argstr;
2243
2244 #ifdef ICONV_OPTION
2245         if (iconv_opt) {
2246                 char *set = strchr(iconv_opt, ',');
2247                 if (set)
2248                         set++;
2249                 else
2250                         set = iconv_opt;
2251                 if (asprintf(&arg, "--iconv=%s", set) < 0)
2252                         goto oom;
2253                 args[ac++] = arg;
2254         }
2255 #endif
2256
2257         if (protect_args && !local_server) /* unprotected args stop here */
2258                 args[ac++] = NULL;
2259
2260         if (list_only > 1)
2261                 args[ac++] = "--list-only";
2262
2263         /* This makes sure that the remote rsync can handle deleting with -d
2264          * sans -r because the --no-r option was added at the same time. */
2265         if (xfer_dirs && !recurse && delete_mode && am_sender)
2266                 args[ac++] = "--no-r";
2267
2268         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
2269                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
2270                         goto oom;
2271                 args[ac++] = arg;
2272         }
2273
2274         if (preserve_devices) {
2275                 /* Note: sending "--devices" would not be backward-compatible. */
2276                 if (!preserve_specials)
2277                         args[ac++] = "--no-specials"; /* -D is already set. */
2278         } else if (preserve_specials)
2279                 args[ac++] = "--specials";
2280
2281         /* The server side doesn't use our log-format, but in certain
2282          * circumstances they need to know a little about the option. */
2283         if (stdout_format && am_sender) {
2284                 /* Use --log-format, not --out-format, for compatibility. */
2285                 if (stdout_format_has_i > 1)
2286                         args[ac++] = "--log-format=%i%I";
2287                 else if (stdout_format_has_i)
2288                         args[ac++] = "--log-format=%i";
2289                 else if (stdout_format_has_o_or_i)
2290                         args[ac++] = "--log-format=%o";
2291                 else if (!verbose)
2292                         args[ac++] = "--log-format=X";
2293         }
2294
2295         if (block_size) {
2296                 if (asprintf(&arg, "-B%lu", block_size) < 0)
2297                         goto oom;
2298                 args[ac++] = arg;
2299         }
2300
2301         if (io_timeout) {
2302                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
2303                         goto oom;
2304                 args[ac++] = arg;
2305         }
2306
2307         if (bwlimit) {
2308                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
2309                         goto oom;
2310                 args[ac++] = arg;
2311         }
2312
2313         if (backup_dir) {
2314                 args[ac++] = "--backup-dir";
2315                 args[ac++] = backup_dir;
2316         }
2317
2318         /* Only send --suffix if it specifies a non-default value. */
2319         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
2320                 /* We use the following syntax to avoid weirdness with '~'. */
2321                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
2322                         goto oom;
2323                 args[ac++] = arg;
2324         }
2325
2326         if (am_sender) {
2327                 if (max_delete > 0) {
2328                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
2329                                 goto oom;
2330                         args[ac++] = arg;
2331                 } else if (max_delete == 0)
2332                         args[ac++] = "--max-delete=-1";
2333                 if (min_size) {
2334                         args[ac++] = "--min-size";
2335                         args[ac++] = min_size_arg;
2336                 }
2337                 if (max_size) {
2338                         args[ac++] = "--max-size";
2339                         args[ac++] = max_size_arg;
2340                 }
2341                 if (delete_before)
2342                         args[ac++] = "--delete-before";
2343                 else if (delete_during == 2)
2344                         args[ac++] = "--delete-delay";
2345                 else if (delete_during)
2346                         args[ac++] = "--delete-during";
2347                 else if (delete_after)
2348                         args[ac++] = "--delete-after";
2349                 else if (delete_mode && !delete_excluded)
2350                         args[ac++] = "--delete";
2351                 if (delete_excluded)
2352                         args[ac++] = "--delete-excluded";
2353                 if (force_delete)
2354                         args[ac++] = "--force";
2355                 if (write_batch < 0)
2356                         args[ac++] = "--only-write-batch=X";
2357                 if (am_root > 1)
2358                         args[ac++] = "--super";
2359                 if (size_only)
2360                         args[ac++] = "--size-only";
2361         } else {
2362                 if (skip_compress) {
2363                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
2364                                 goto oom;
2365                         args[ac++] = arg;
2366                 }
2367         }
2368
2369         if (modify_window_set) {
2370                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
2371                         goto oom;
2372                 args[ac++] = arg;
2373         }
2374
2375         if (checksum_seed) {
2376                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
2377                         goto oom;
2378                 args[ac++] = arg;
2379         }
2380
2381         if (partial_dir && am_sender) {
2382                 if (partial_dir != tmp_partialdir) {
2383                         args[ac++] = "--partial-dir";
2384                         args[ac++] = partial_dir;
2385                 }
2386                 if (delay_updates)
2387                         args[ac++] = "--delay-updates";
2388         } else if (keep_partial && am_sender)
2389                 args[ac++] = "--partial";
2390
2391         if (ignore_errors)
2392                 args[ac++] = "--ignore-errors";
2393
2394         if (copy_unsafe_links)
2395                 args[ac++] = "--copy-unsafe-links";
2396
2397         if (safe_symlinks)
2398                 args[ac++] = "--safe-links";
2399
2400         if (numeric_ids)
2401                 args[ac++] = "--numeric-ids";
2402
2403         if (use_qsort)
2404                 args[ac++] = "--use-qsort";
2405
2406         if (am_sender) {
2407                 if (ignore_existing)
2408                         args[ac++] = "--ignore-existing";
2409
2410                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
2411                 if (ignore_non_existing)
2412                         args[ac++] = "--existing";
2413
2414                 if (tmpdir) {
2415                         args[ac++] = "--temp-dir";
2416                         args[ac++] = tmpdir;
2417                 }
2418
2419                 if (basis_dir[0]) {
2420                         /* the server only needs this option if it is not the sender,
2421                          *   and it may be an older version that doesn't know this
2422                          *   option, so don't send it if client is the sender.
2423                          */
2424                         for (i = 0; i < basis_dir_cnt; i++) {
2425                                 args[ac++] = dest_option;
2426                                 args[ac++] = basis_dir[i];
2427                         }
2428                 }
2429         }
2430
2431         /* What flags do we need to send to the other side? */
2432         where = (am_server ? W_CLI : W_SRV) | (am_sender ? W_REC : W_SND);
2433         arg = make_output_option(info_words, info_levels, where);
2434         if (arg)
2435                 args[ac++] = arg;
2436
2437         arg = make_output_option(debug_words, debug_levels, where);
2438         if (arg)
2439                 args[ac++] = arg;
2440
2441         if (append_mode) {
2442                 if (append_mode > 1)
2443                         args[ac++] = "--append";
2444                 args[ac++] = "--append";
2445         } else if (inplace)
2446                 args[ac++] = "--inplace";
2447
2448         if (files_from && (!am_sender || filesfrom_host)) {
2449                 if (filesfrom_host) {
2450                         args[ac++] = "--files-from";
2451                         args[ac++] = files_from;
2452                         if (eol_nulls)
2453                                 args[ac++] = "--from0";
2454                 } else {
2455                         args[ac++] = "--files-from=-";
2456                         args[ac++] = "--from0";
2457                 }
2458                 if (!relative_paths)
2459                         args[ac++] = "--no-relative";
2460         }
2461         /* It's OK that this checks the upper-bound of the protocol_version. */
2462         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2463                 args[ac++] = "--no-implied-dirs";
2464
2465         if (fuzzy_basis && am_sender)
2466                 args[ac++] = "--fuzzy";
2467
2468         if (remove_source_files == 1)
2469                 args[ac++] = "--remove-source-files";
2470         else if (remove_source_files)
2471                 args[ac++] = "--remove-sent-files";
2472
2473         if (ac > MAX_SERVER_ARGS) { /* Not possible... */
2474                 rprintf(FERROR, "argc overflow in server_options().\n");
2475                 exit_cleanup(RERR_MALLOC);
2476         }
2477
2478         if (remote_option_cnt) {
2479                 int j;
2480                 if (ac + remote_option_cnt > MAX_SERVER_ARGS) {
2481                         rprintf(FERROR, "too many remote options specified.\n");
2482                         exit_cleanup(RERR_SYNTAX);
2483                 }
2484                 for (j = 1; j <= remote_option_cnt; j++)
2485                         args[ac++] = (char*)remote_options[j];
2486         }
2487
2488         *argc_p = ac;
2489         return;
2490
2491     oom:
2492         out_of_memory("server_options");
2493 }
2494
2495 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2496  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2497  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2498  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2499  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2500  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2501  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2502 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2503 {
2504         char *p;
2505         int not_host;
2506         int hostlen;
2507
2508         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2509                 char *path;
2510                 s += strlen(URL_PREFIX);
2511                 if ((p = strchr(s, '/')) != NULL) {
2512                         hostlen = p - s;
2513                         path = p + 1;
2514                 } else {
2515                         hostlen = strlen(s);
2516                         path = "";
2517                 }
2518                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2519                         s++;
2520                         hostlen = p - s;
2521                         if (p[1] == ':')
2522                                 *port_ptr = atoi(p+2);
2523                 } else {
2524                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2525                                 hostlen = p - s;
2526                                 *port_ptr = atoi(p+1);
2527                         }
2528                 }
2529                 if (!*port_ptr)
2530                         *port_ptr = RSYNC_PORT;
2531                 *host_ptr = new_array(char, hostlen + 1);
2532                 strlcpy(*host_ptr, s, hostlen + 1);
2533                 return path;
2534         }
2535
2536         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2537                 s++;
2538                 hostlen = p - s;
2539                 *p = '\0';
2540                 not_host = strchr(s, '/') || !strchr(s, ':');
2541                 *p = ']';
2542                 if (not_host)
2543                         return NULL;
2544                 p++;
2545         } else {
2546                 if (!(p = strchr(s, ':')))
2547                         return NULL;
2548                 hostlen = p - s;
2549                 *p = '\0';
2550                 not_host = strchr(s, '/') != NULL;
2551                 *p = ':';
2552                 if (not_host)
2553                         return NULL;
2554         }
2555
2556         *host_ptr = new_array(char, hostlen + 1);
2557         strlcpy(*host_ptr, s, hostlen + 1);
2558
2559         if (p[1] == ':') {
2560                 if (port_ptr && !*port_ptr)
2561                         *port_ptr = RSYNC_PORT;
2562                 return p + 2;
2563         }
2564         if (port_ptr)
2565                 *port_ptr = 0;
2566
2567         return p + 1;
2568 }