options.c

   1 /*  -*- c-file-style: "linux" -*-
   2  *
   3  * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
   4  * Copyright (C) 2000, 2001, 2002 by Martin Pool <mbp@samba.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "rsync.h"
  22 #include "popt.h"
  23
  24 extern int sanitize_paths;
  25 extern int select_timeout;
  26 extern struct exclude_list_struct exclude_list;
  27 extern struct exclude_list_struct server_exclude_list;
  28
  29 int make_backups = 0;
  30
  31 /**
  32  * If 1, send the whole file as literal data rather than trying to
  33  * create an incremental diff.
  34  *
  35  * If -1, then look at whether we're local or remote and go by that.
  36  *
  37  * @sa disable_deltas_p()
  38  **/
  39 int whole_file = -1;
  40
  41 int archive_mode = 0;
  42 int keep_dirlinks = 0;
  43 int copy_links = 0;
  44 int preserve_links = 0;
  45 int preserve_hard_links = 0;
  46 int preserve_perms = 0;
  47 int preserve_devices = 0;
  48 int preserve_uid = 0;
  49 int preserve_gid = 0;
  50 int preserve_times = 0;
  51 int update_only = 0;
  52 int cvs_exclude = 0;
  53 int dry_run = 0;
  54 int local_server = 0;
  55 int ignore_times = 0;
  56 int delete_mode = 0;
  57 int delete_excluded = 0;
  58 int one_file_system = 0;
  59 int protocol_version = PROTOCOL_VERSION;
  60 int sparse_files = 0;
  61 int do_compression = 0;
  62 int am_root = 0;
  63 int orig_umask = 0;
  64 int relative_paths = -1;
  65 int implied_dirs = 1;
  66 int numeric_ids = 0;
  67 int force_delete = 0;
  68 int io_timeout = 0;
  69 int read_only = 0;
  70 int module_id = -1;
  71 int am_server = 0;
  72 int am_sender = 0;
  73 int am_generator = 0;
  74 char *files_from = NULL;
  75 int filesfrom_fd = -1;
  76 char *remote_filesfrom_file = NULL;
  77 int eol_nulls = 0;
  78 int recurse = 0;
  79 int am_daemon = 0;
  80 int daemon_over_rsh = 0;
  81 int do_stats = 0;
  82 int do_progress = 0;
  83 int keep_partial = 0;
  84 int safe_symlinks = 0;
  85 int copy_unsafe_links = 0;
  86 int size_only = 0;
  87 int bwlimit = 0;
  88 size_t bwlimit_writemax = 0;
  89 int delete_after = 0;
  90 int only_existing = 0;
  91 int opt_ignore_existing = 0;
  92 int max_delete = 0;
  93 int ignore_errors = 0;
  94 int modify_window = 0;
  95 int blocking_io = -1;
  96 int checksum_seed = 0;
  97 int inplace = 0;
  98 unsigned int block_size = 0;
  99
 100
 101 /** Network address family. **/
 102 #ifdef INET6
 103 int default_af_hint = 0;        /* Any protocol */
 104 #else
 105 int default_af_hint = AF_INET;  /* Must use IPv4 */
 106 #endif
 107
 108 /** Do not go into the background when run as --daemon.  Good
 109  * for debugging and required for running as a service on W32,
 110  * or under Unix process-monitors. **/
 111 int no_detach = 0;
 112
 113 int write_batch = 0;
 114 int read_batch = 0;
 115 int backup_dir_len = 0;
 116 int backup_suffix_len;
 117 unsigned int backup_dir_remainder;
 118
 119 char *backup_suffix = NULL;
 120 char *tmpdir = NULL;
 121 char *partial_dir = NULL;
 122 char *compare_dest = NULL;
 123 char *config_file = NULL;
 124 char *shell_cmd = NULL;
 125 char *log_format = NULL;
 126 char *password_file = NULL;
 127 char *rsync_path = RSYNC_PATH;
 128 char *backup_dir = NULL;
 129 char backup_dir_buf[MAXPATHLEN];
 130 int rsync_port = RSYNC_PORT;
 131 int link_dest = 0;
 132
 133 int verbose = 0;
 134 int quiet = 0;
 135 int always_checksum = 0;
 136 int list_only = 0;
 137
 138 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 139 char *batch_name = NULL;
 140
 141 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 142 static int modify_window_set;
 143
 144 /** Local address to bind.  As a character string because it's
 145  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 146  * address, or a hostname. **/
 147 char *bind_address;
 148
 149
 150 static void print_rsync_version(enum logcode f)
 151 {
 152         char const *got_socketpair = "no ";
 153         char const *have_inplace = "no ";
 154         char const *hardlinks = "no ";
 155         char const *links = "no ";
 156         char const *ipv6 = "no ";
 157         STRUCT_STAT *dumstat;
 158
 159 #ifdef HAVE_SOCKETPAIR
 160         got_socketpair = "";
 161 #endif
 162
 163 #if HAVE_FTRUNCATE
 164         have_inplace = "";
 165 #endif
 166
 167 #if SUPPORT_HARD_LINKS
 168         hardlinks = "";
 169 #endif
 170
 171 #if SUPPORT_LINKS
 172         links = "";
 173 #endif
 174
 175 #if INET6
 176         ipv6 = "";
 177 #endif
 178
 179         rprintf(f, "%s  version %s  protocol version %d\n",
 180                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
 181         rprintf(f,
 182                 "Copyright (C) 1996-2004 by Andrew Tridgell and others\n");
 183         rprintf(f, "<http://rsync.samba.org/>\n");
 184         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
 185                 "%shard links, %ssymlinks, batchfiles, \n",
 186                 (int) (sizeof (OFF_T) * 8),
 187                 got_socketpair, hardlinks, links);
 188
 189         /* Note that this field may not have type ino_t.  It depends
 190          * on the complicated interaction between largefile feature
 191          * macros. */
 192         rprintf(f, "              %sinplace, %sIPv6, %d-bit system inums, %d-bit internal inums\n",
 193                 have_inplace, ipv6,
 194                 (int) (sizeof dumstat->st_ino * 8),
 195                 (int) (sizeof (uint64) * 8));
 196 #ifdef MAINTAINER_MODE
 197         rprintf(f, "              panic action: \"%s\"\n",
 198                 get_panic_action());
 199 #endif
 200
 201 #ifdef INT64_IS_OFF_T
 202         if (sizeof (int64) < 8)
 203                 rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 204 #endif
 205
 206         rprintf(f,
 207 "\n"
 208 "rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n"
 209 "are welcome to redistribute it under certain conditions.  See the GNU\n"
 210 "General Public Licence for details.\n"
 211                 );
 212 }
 213
 214
 215 void usage(enum logcode F)
 216 {
 217   print_rsync_version(F);
 218
 219   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\nvia a fast differencing algorithm.\n\n");
 220
 221   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 222   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC DEST\n");
 223   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... DEST\n");
 224   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 225   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 226   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 227   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 228   rprintf(F,"SRC on single-colon remote HOST will be expanded by remote shell\n");
 229   rprintf(F,"SRC on server remote HOST may contain shell wildcards or multiple\n");
 230   rprintf(F,"  sources separated by space as long as they have same top-level\n");
 231   rprintf(F,"\nOptions\n");
 232   rprintf(F," -v, --verbose               increase verbosity\n");
 233   rprintf(F," -q, --quiet                 decrease verbosity\n");
 234   rprintf(F," -c, --checksum              always checksum\n");
 235   rprintf(F," -a, --archive               archive mode, equivalent to -rlptgoD (no -H)\n");
 236   rprintf(F," -r, --recursive             recurse into directories\n");
 237   rprintf(F," -R, --relative              use relative path names\n");
 238   rprintf(F,"     --no-relative           turn off --relative\n");
 239   rprintf(F,"     --no-implied-dirs       don't send implied dirs with -R\n");
 240   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 241   rprintf(F,"     --backup-dir            make backups into this directory\n");
 242   rprintf(F,"     --suffix=SUFFIX         backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 243   rprintf(F," -u, --update                update only (don't overwrite newer files)\n");
 244   rprintf(F,"     --inplace               update destination files inplace (SEE MAN PAGE)\n");
 245   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 246   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 247   rprintf(F," -L, --copy-links            copy the referent of all symlinks\n");
 248   rprintf(F,"     --copy-unsafe-links     copy the referent of \"unsafe\" symlinks\n");
 249   rprintf(F,"     --safe-links            ignore \"unsafe\" symlinks\n");
 250   rprintf(F," -H, --hard-links            preserve hard links\n");
 251   rprintf(F," -p, --perms                 preserve permissions\n");
 252   rprintf(F," -o, --owner                 preserve owner (root only)\n");
 253   rprintf(F," -g, --group                 preserve group\n");
 254   rprintf(F," -D, --devices               preserve devices (root only)\n");
 255   rprintf(F," -t, --times                 preserve times\n");
 256   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 257   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 258   rprintf(F," -W, --whole-file            copy whole files, no incremental checks\n");
 259   rprintf(F,"     --no-whole-file         turn off --whole-file\n");
 260   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 261   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 262   rprintf(F," -e, --rsh=COMMAND           specify the remote shell\n");
 263   rprintf(F,"     --rsync-path=PATH       specify path to rsync on the remote machine\n");
 264   rprintf(F,"     --existing              only update files that already exist\n");
 265   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
 266   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 267   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
 268   rprintf(F,"     --delete-after          receiver deletes after transferring, not before\n");
 269   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 270   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 271   rprintf(F,"     --partial               keep partially transferred files\n");
 272   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 273   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 274   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 275   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
 276   rprintf(F," -I, --ignore-times          turn off mod time & file size quick check\n");
 277   rprintf(F,"     --size-only             ignore mod time for quick check (use size)\n");
 278   rprintf(F,"     --modify-window=NUM     compare mod times with reduced accuracy\n");
 279   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 280   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 281   rprintf(F,"     --link-dest=DIR         create hardlinks to DIR for unchanged files\n");
 282   rprintf(F," -P                          equivalent to --partial --progress\n");
 283   rprintf(F," -z, --compress              compress file data\n");
 284   rprintf(F," -C, --cvs-exclude           auto ignore files in the same way CVS does\n");
 285   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 286   rprintf(F,"     --exclude-from=FILE     exclude patterns listed in FILE\n");
 287   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 288   rprintf(F,"     --include-from=FILE     don't exclude patterns listed in FILE\n");
 289   rprintf(F,"     --files-from=FILE       read FILE for list of source-file names\n");
 290   rprintf(F," -0, --from0                 all *-from file lists are delimited by nulls\n");
 291   rprintf(F,"     --version               print version number\n");
 292   rprintf(F,"     --daemon                run as an rsync daemon\n");
 293   rprintf(F,"     --no-detach             do not detach from the parent\n");
 294   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 295   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 296   rprintf(F,"     --port=PORT             specify alternate rsyncd port number\n");
 297   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 298   rprintf(F,"     --no-blocking-io        turn off --blocking-io\n");
 299   rprintf(F,"     --stats                 give some file transfer stats\n");
 300   rprintf(F,"     --progress              show progress during transfer\n");
 301   rprintf(F,"     --log-format=FORMAT     log file transfers using specified format\n");
 302   rprintf(F,"     --password-file=FILE    get password from FILE\n");
 303   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth, KBytes per second\n");
 304   rprintf(F,"     --write-batch=FILE      write a batch to FILE\n");
 305   rprintf(F,"     --read-batch=FILE       read a batch from FILE\n");
 306   rprintf(F,"     --checksum-seed=NUM     set block/file checksum seed\n");
 307 #ifdef INET6
 308   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 309   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 310 #endif
 311   rprintf(F," -h, --help                  show this help screen\n");
 312
 313   rprintf(F,"\n");
 314
 315   rprintf(F,"\nPlease see the rsync(1) and rsyncd.conf(5) man pages for full documentation\n");
 316   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 317 }
 318
 319 enum {OPT_VERSION = 1000, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 320       OPT_DELETE_AFTER, OPT_DELETE_EXCLUDED, OPT_LINK_DEST,
 321       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW,
 322       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_TIMEOUT,
 323       OPT_REFUSED_BASE = 9000};
 324
 325 static struct poptOption long_options[] = {
 326   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 327   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 328   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 329   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 330   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 331   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 332   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 333   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 334   {"one-file-system", 'x', POPT_ARG_NONE,   &one_file_system, 0, 0, 0 },
 335   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 336   {"existing",         0,  POPT_ARG_NONE,   &only_existing, 0, 0, 0 },
 337   {"ignore-existing",  0,  POPT_ARG_NONE,   &opt_ignore_existing, 0, 0, 0 },
 338   {"delete-after",     0,  POPT_ARG_NONE,   0, OPT_DELETE_AFTER, 0, 0 },
 339   {"delete-excluded",  0,  POPT_ARG_NONE,   0, OPT_DELETE_EXCLUDED, 0, 0 },
 340   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 341   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
 342   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 343   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 344   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 345   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 346   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 347   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 348   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
 349   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 350   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 351   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 352   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 353   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 354   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 355   {"links",           'l', POPT_ARG_NONE,   &preserve_links, 0, 0, 0 },
 356   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 357   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 358   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 359   {"copy-unsafe-links", 0, POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 360   {"perms",           'p', POPT_ARG_NONE,   &preserve_perms, 0, 0, 0 },
 361   {"owner",           'o', POPT_ARG_NONE,   &preserve_uid, 0, 0, 0 },
 362   {"group",           'g', POPT_ARG_NONE,   &preserve_gid, 0, 0, 0 },
 363   {"devices",         'D', POPT_ARG_NONE,   &preserve_devices, 0, 0, 0 },
 364   {"times",           't', POPT_ARG_NONE,   &preserve_times, 0, 0, 0 },
 365   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
 366   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 367   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 368   {"archive",         'a', POPT_ARG_NONE,   &archive_mode, 0, 0, 0 },
 369   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 370   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 371   {"recursive",       'r', POPT_ARG_NONE,   &recurse, 0, 0, 0 },
 372   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 373   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 374   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 375   {"block-size",      'B', POPT_ARG_INT,    &block_size, 0, 0, 0 },
 376   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 377   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, OPT_TIMEOUT, 0, 0 },
 378   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 379   {"compare-dest",     0,  POPT_ARG_STRING, &compare_dest, 0, 0, 0 },
 380   {"link-dest",        0,  POPT_ARG_STRING, &compare_dest, OPT_LINK_DEST, 0, 0 },
 381   /* TODO: Should this take an optional int giving the compression level? */
 382   {"compress",        'z', POPT_ARG_NONE,   &do_compression, 0, 0, 0 },
 383   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 384   {"no-detach",        0,  POPT_ARG_NONE,   &no_detach, 0, 0, 0 },
 385   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 386   {"progress",         0,  POPT_ARG_NONE,   &do_progress, 0, 0, 0 },
 387   {"partial",          0,  POPT_ARG_NONE,   &keep_partial, 0, 0, 0 },
 388   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 389   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 390   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 391   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 392   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 393   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 394   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 395   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
 396   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 397   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 398   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 399   {"hard-links",      'H', POPT_ARG_NONE,   &preserve_hard_links, 0, 0, 0 },
 400   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 401   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 402   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 403   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
 404   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 405   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 406   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 407 #ifdef INET6
 408   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 409   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 410 #endif
 411   {0,0,0,0, 0, 0, 0}
 412 };
 413
 414
 415 static char err_buf[200];
 416
 417
 418 /**
 419  * Store the option error message, if any, so that we can log the
 420  * connection attempt (which requires parsing the options), and then
 421  * show the error later on.
 422  **/
 423 void option_error(void)
 424 {
 425         if (!err_buf[0]) {
 426                 strcpy(err_buf, "Error parsing options: "
 427                     "option may be supported on client but not on server?\n");
 428         }
 429
 430         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 431 }
 432
 433
 434 /**
 435  * Tweak the option table to disable all options that the rsyncd.conf
 436  * file has told us to refuse.
 437  **/
 438 static void set_refuse_options(char *bp)
 439 {
 440         struct poptOption *op;
 441         char *cp, shortname[2];
 442         int is_wild, found_match;
 443
 444         shortname[1] = '\0';
 445
 446         while (1) {
 447                 while (*bp == ' ') bp++;
 448                 if (!*bp)
 449                         break;
 450                 if ((cp = strchr(bp, ' ')) != NULL)
 451                         *cp= '\0';
 452                 /* If they specify "delete", reject all delete options. */
 453                 if (strcmp(bp, "delete") == 0)
 454                         bp = "delete*";
 455                 is_wild = strpbrk(bp, "*?[") != NULL;
 456                 found_match = 0;
 457                 for (op = long_options; ; op++) {
 458                         *shortname = op->shortName;
 459                         if (!op->longName && !*shortname)
 460                                 break;
 461                         if ((op->longName && wildmatch(bp, op->longName))
 462                             || (*shortname && wildmatch(bp, shortname))) {
 463                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 464                                 found_match = 1;
 465                                 if (!is_wild)
 466                                         break;
 467                         }
 468                 }
 469                 if (!found_match) {
 470                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 471                                 bp);
 472                 }
 473                 if (!cp)
 474                         break;
 475                 *cp = ' ';
 476                 bp = cp + 1;
 477         }
 478 }
 479
 480
 481 static int count_args(const char **argv)
 482 {
 483         int i = 0;
 484
 485         if (argv) {
 486                 while (argv[i] != NULL)
 487                         i++;
 488         }
 489
 490         return i;
 491 }
 492
 493
 494 /**
 495  * Process command line arguments.  Called on both local and remote.
 496  *
 497  * @retval 1 if all options are OK; with globals set to appropriate
 498  * values
 499  *
 500  * @retval 0 on error, with err_buf containing an explanation
 501  **/
 502 int parse_arguments(int *argc, const char ***argv, int frommain)
 503 {
 504         int opt;
 505         char *ref = lp_refuse_options(module_id);
 506         const char *arg;
 507         poptContext pc;
 508
 509         if (ref && *ref)
 510                 set_refuse_options(ref);
 511
 512         /* TODO: Call poptReadDefaultConfig; handle errors. */
 513
 514         /* The context leaks in case of an error, but if there's a
 515          * problem we always exit anyhow. */
 516         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
 517
 518         while ((opt = poptGetNextOpt(pc)) != -1) {
 519                 /* most options are handled automatically by popt;
 520                  * only special cases are returned and listed here. */
 521
 522                 switch (opt) {
 523                 case OPT_VERSION:
 524                         print_rsync_version(FINFO);
 525                         exit_cleanup(0);
 526
 527                 case OPT_MODIFY_WINDOW:
 528                         /* The value has already been set by popt, but
 529                          * we need to remember that we're using a
 530                          * non-default setting. */
 531                         modify_window_set = 1;
 532                         break;
 533
 534                 case OPT_DELETE_AFTER:
 535                         delete_after = 1;
 536                         delete_mode = 1;
 537                         break;
 538
 539                 case OPT_DELETE_EXCLUDED:
 540                         delete_excluded = 1;
 541                         delete_mode = 1;
 542                         break;
 543
 544                 case OPT_EXCLUDE:
 545                         add_exclude(&exclude_list, poptGetOptArg(pc), 0);
 546                         break;
 547
 548                 case OPT_INCLUDE:
 549                         add_exclude(&exclude_list, poptGetOptArg(pc),
 550                                     XFLG_DEF_INCLUDE);
 551                         break;
 552
 553                 case OPT_EXCLUDE_FROM:
 554                 case OPT_INCLUDE_FROM:
 555                         arg = poptGetOptArg(pc);
 556                         if (sanitize_paths)
 557                                 arg = sanitize_path(NULL, arg, NULL, 0);
 558                         if (server_exclude_list.head) {
 559                                 char *cp = (char *)arg;
 560                                 clean_fname(cp, 1);
 561                                 if (check_exclude(&server_exclude_list, cp, 0) < 0)
 562                                         goto options_rejected;
 563                         }
 564                         add_exclude_file(&exclude_list, arg, XFLG_FATAL_ERRORS
 565                                          | (opt == OPT_INCLUDE_FROM
 566                                           ? XFLG_DEF_INCLUDE : 0));
 567                         break;
 568
 569                 case 'h':
 570                         usage(FINFO);
 571                         exit_cleanup(0);
 572
 573                 case 'v':
 574                         verbose++;
 575                         break;
 576
 577                 case 'q':
 578                         if (frommain)
 579                                 quiet++;
 580                         break;
 581
 582                 case OPT_SENDER:
 583                         if (!am_server) {
 584                                 usage(FERROR);
 585                                 exit_cleanup(RERR_SYNTAX);
 586                         }
 587                         am_sender = 1;
 588                         break;
 589
 590                 case 'P':
 591                         do_progress = 1;
 592                         keep_partial = 1;
 593                         break;
 594
 595                 case OPT_WRITE_BATCH:
 596                         /* batch_name is already set */
 597                         write_batch = 1;
 598                         break;
 599
 600                 case OPT_READ_BATCH:
 601                         /* batch_name is already set */
 602                         read_batch = 1;
 603                         break;
 604
 605                 case OPT_TIMEOUT:
 606                         if (io_timeout && io_timeout < select_timeout)
 607                                 select_timeout = io_timeout;
 608                         break;
 609
 610                 case OPT_LINK_DEST:
 611 #if HAVE_LINK
 612                         link_dest = 1;
 613                         break;
 614 #else
 615                         snprintf(err_buf, sizeof err_buf,
 616                                  "hard links are not supported on this %s\n",
 617                                  am_server ? "server" : "client");
 618                         return 0;
 619 #endif
 620
 621                 default:
 622                         /* A large opt value means that set_refuse_options()
 623                          * turned this option off (opt-BASE is its index). */
 624                         if (opt >= OPT_REFUSED_BASE) {
 625                                 struct poptOption *op =
 626                                     &long_options[opt-OPT_REFUSED_BASE];
 627                                 int n = snprintf(err_buf, sizeof err_buf,
 628                                     "The server is configured to refuse --%s\n",
 629                                     op->longName) - 1;
 630                                 if (op->shortName) {
 631                                         snprintf(err_buf+n, sizeof err_buf-n,
 632                                             " (-%c)\n", op->shortName);
 633                                 }
 634                         } else {
 635                                 snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
 636                                     am_server ? "on remote machine: " : "",
 637                                     poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 638                                     poptStrerror(opt));
 639                         }
 640                         return 0;
 641                 }
 642         }
 643
 644 #if !SUPPORT_LINKS
 645         if (preserve_links && !am_sender) {
 646                 snprintf(err_buf, sizeof err_buf,
 647                          "symlinks are not supported on this %s\n",
 648                          am_server ? "server" : "client");
 649                 return 0;
 650         }
 651 #endif
 652
 653 #if !SUPPORT_HARD_LINKS
 654         if (preserve_hard_links) {
 655                 snprintf(err_buf, sizeof err_buf,
 656                          "hard links are not supported on this %s\n",
 657                          am_server ? "server" : "client");
 658                 return 0;
 659         }
 660 #endif
 661
 662         if (write_batch && read_batch) {
 663                 snprintf(err_buf, sizeof err_buf,
 664                         "--write-batch and --read-batch can not be used together\n");
 665                 return 0;
 666         }
 667         if (write_batch || read_batch) {
 668                 if (dry_run) {
 669                         snprintf(err_buf, sizeof err_buf,
 670                                 "--%s-batch cannot be used with --dry_run (-n)\n",
 671                                 write_batch ? "write" : "read");
 672                         return 0;
 673                 }
 674                 if (am_server) {
 675                         rprintf(FINFO,
 676                                 "ignoring --%s-batch option sent to server\n",
 677                                 write_batch ? "write" : "read");
 678                         /* We don't actually exit_cleanup(), so that we can
 679                          * still service older version clients that still send
 680                          * batch args to server. */
 681                         read_batch = write_batch = 0;
 682                         batch_name = NULL;
 683                 }
 684         }
 685         if (read_batch && files_from) {
 686                 snprintf(err_buf, sizeof err_buf,
 687                         "--read-batch cannot be used with --files-from\n");
 688                 return 0;
 689         }
 690         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
 691                 snprintf(err_buf, sizeof err_buf,
 692                         "the batch-file name must be %d characters or less.\n",
 693                         MAX_BATCH_NAME_LEN);
 694                 return 0;
 695         }
 696
 697         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 698                 snprintf(err_buf, sizeof err_buf,
 699                          "the --temp-dir path is WAY too long.\n");
 700                 return 0;
 701         }
 702
 703         if (archive_mode) {
 704                 if (!files_from)
 705                         recurse = 1;
 706 #if SUPPORT_LINKS
 707                 preserve_links = 1;
 708 #endif
 709                 preserve_perms = 1;
 710                 preserve_times = 1;
 711                 preserve_gid = 1;
 712                 preserve_uid = 1;
 713                 preserve_devices = 1;
 714         }
 715
 716         if (relative_paths < 0)
 717                 relative_paths = files_from? 1 : 0;
 718
 719         *argv = poptGetArgs(pc);
 720         *argc = count_args(*argv);
 721
 722         if (sanitize_paths) {
 723                 int i;
 724                 for (i = *argc; i-- > 0; )
 725                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
 726                 if (tmpdir)
 727                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
 728                 if (partial_dir)
 729                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
 730                 if (compare_dest)
 731                         compare_dest = sanitize_path(NULL, compare_dest, NULL, 0);
 732                 if (backup_dir)
 733                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
 734                 if (files_from)
 735                         files_from = sanitize_path(NULL, files_from, NULL, 0);
 736         }
 737         if (server_exclude_list.head && !am_sender) {
 738                 struct exclude_list_struct *elp = &server_exclude_list;
 739                 if (tmpdir) {
 740                         clean_fname(tmpdir, 1);
 741                         if (check_exclude(elp, tmpdir, 1) < 0)
 742                                 goto options_rejected;
 743                 }
 744                 if (partial_dir) {
 745                         clean_fname(partial_dir, 1);
 746                         if (check_exclude(elp, partial_dir, 1) < 0)
 747                                 goto options_rejected;
 748                 }
 749                 if (compare_dest) {
 750                         clean_fname(compare_dest, 1);
 751                         if (check_exclude(elp, compare_dest, 1) < 0)
 752                                 goto options_rejected;
 753                 }
 754                 if (backup_dir) {
 755                         clean_fname(backup_dir, 1);
 756                         if (check_exclude(elp, backup_dir, 1) < 0)
 757                                 goto options_rejected;
 758                 }
 759         }
 760         if (server_exclude_list.head && files_from) {
 761                 clean_fname(files_from, 1);
 762                 if (check_exclude(&server_exclude_list, files_from, 0) < 0) {
 763                     options_rejected:
 764                         snprintf(err_buf, sizeof err_buf,
 765                             "Your options have been rejected by the server.\n");
 766                         return 0;
 767                 }
 768         }
 769
 770         if (daemon_opt) {
 771                 daemon_opt = 0;
 772                 am_daemon = 1;
 773                 return 1;
 774         }
 775
 776         if (!backup_suffix)
 777                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
 778         backup_suffix_len = strlen(backup_suffix);
 779         if (strchr(backup_suffix, '/') != NULL) {
 780                 snprintf(err_buf, sizeof err_buf,
 781                         "--suffix cannot contain slashes: %s\n",
 782                         backup_suffix);
 783                 return 0;
 784         }
 785         if (backup_dir) {
 786                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
 787                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
 788                 if (backup_dir_remainder < 32) {
 789                         snprintf(err_buf, sizeof err_buf,
 790                                 "the --backup-dir path is WAY too long.\n");
 791                         return 0;
 792                 }
 793                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
 794                         backup_dir_buf[backup_dir_len++] = '/';
 795                         backup_dir_buf[backup_dir_len] = '\0';
 796                 }
 797                 if (verbose > 1 && !am_sender)
 798                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
 799         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
 800                 snprintf(err_buf, sizeof err_buf,
 801                         "--suffix cannot be a null string without --backup-dir\n");
 802                 return 0;
 803         }
 804
 805         if (do_progress && !verbose)
 806                 verbose = 1;
 807
 808         if (bwlimit) {
 809                 bwlimit_writemax = (size_t)bwlimit * 128;
 810                 if (bwlimit_writemax < 512)
 811                         bwlimit_writemax = 512;
 812         }
 813
 814         if (inplace) {
 815 #if HAVE_FTRUNCATE
 816                 if (partial_dir) {
 817                         snprintf(err_buf, sizeof err_buf,
 818                                  "--inplace cannot be used with --partial-dir\n");
 819                         return 0;
 820                 }
 821                 keep_partial = 0;
 822 #else
 823                 snprintf(err_buf, sizeof err_buf,
 824                          "--inplace is not supported on this %s\n",
 825                          am_server ? "server" : "client");
 826                 return 0;
 827 #endif
 828                 if (compare_dest) {
 829                         snprintf(err_buf, sizeof err_buf,
 830                                  "--inplace does not yet work with %s\n",
 831                                  link_dest ? "--link-dest" : "--compare-dest");
 832                         return 0;
 833                 }
 834         } else {
 835                 if (keep_partial && !partial_dir)
 836                         partial_dir = getenv("RSYNC_PARTIAL_DIR");
 837                 if (partial_dir) {
 838                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
 839                                 partial_dir = NULL;
 840                         else if (*partial_dir != '/') {
 841                                 add_exclude(&exclude_list, partial_dir,
 842                                             XFLG_DIRECTORY);
 843                         }
 844                         keep_partial = 1;
 845                 }
 846         }
 847
 848         if (files_from) {
 849                 char *colon;
 850                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
 851                         usage(FERROR);
 852                         exit_cleanup(RERR_SYNTAX);
 853                 }
 854                 if (strcmp(files_from, "-") == 0) {
 855                         filesfrom_fd = 0;
 856                         if (am_server)
 857                                 remote_filesfrom_file = "-";
 858                 }
 859                 else if ((colon = find_colon(files_from)) != 0) {
 860                         if (am_server) {
 861                                 usage(FERROR);
 862                                 exit_cleanup(RERR_SYNTAX);
 863                         }
 864                         remote_filesfrom_file = colon+1 + (colon[1] == ':');
 865                         if (strcmp(remote_filesfrom_file, "-") == 0) {
 866                                 snprintf(err_buf, sizeof err_buf,
 867                                         "Invalid --files-from remote filename\n");
 868                                 return 0;
 869                         }
 870                 } else {
 871                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
 872                         if (filesfrom_fd < 0) {
 873                                 snprintf(err_buf, sizeof err_buf,
 874                                         "failed to open files-from file %s: %s\n",
 875                                         files_from, strerror(errno));
 876                                 return 0;
 877                         }
 878                 }
 879         }
 880
 881         return 1;
 882 }
 883
 884
 885 /**
 886  * Construct a filtered list of options to pass through from the
 887  * client to the server.
 888  *
 889  * This involves setting options that will tell the server how to
 890  * behave, and also filtering out options that are processed only
 891  * locally.
 892  **/
 893 void server_options(char **args,int *argc)
 894 {
 895         int ac = *argc;
 896         static char argstr[50];
 897         char *arg;
 898
 899         int i, x;
 900
 901         if (blocking_io == -1)
 902                 blocking_io = 0;
 903
 904         args[ac++] = "--server";
 905
 906         if (daemon_over_rsh) {
 907                 args[ac++] = "--daemon";
 908                 *argc = ac;
 909                 /* if we're passing --daemon, we're done */
 910                 return;
 911         }
 912
 913         if (!am_sender)
 914                 args[ac++] = "--sender";
 915
 916         x = 1;
 917         argstr[0] = '-';
 918         for (i = 0; i < verbose; i++)
 919                 argstr[x++] = 'v';
 920
 921         /* the -q option is intentionally left out */
 922         if (make_backups)
 923                 argstr[x++] = 'b';
 924         if (update_only)
 925                 argstr[x++] = 'u';
 926         if (dry_run)
 927                 argstr[x++] = 'n';
 928         if (preserve_links)
 929                 argstr[x++] = 'l';
 930         if (copy_links)
 931                 argstr[x++] = 'L';
 932         if (keep_dirlinks && am_sender)
 933                 argstr[x++] = 'K';
 934
 935         if (whole_file > 0)
 936                 argstr[x++] = 'W';
 937         /* We don't need to send --no-whole-file, because it's the
 938          * default for remote transfers, and in any case old versions
 939          * of rsync will not understand it. */
 940
 941         if (preserve_hard_links)
 942                 argstr[x++] = 'H';
 943         if (preserve_uid)
 944                 argstr[x++] = 'o';
 945         if (preserve_gid)
 946                 argstr[x++] = 'g';
 947         if (preserve_devices)
 948                 argstr[x++] = 'D';
 949         if (preserve_times)
 950                 argstr[x++] = 't';
 951         if (preserve_perms)
 952                 argstr[x++] = 'p';
 953         if (recurse)
 954                 argstr[x++] = 'r';
 955         if (always_checksum)
 956                 argstr[x++] = 'c';
 957         if (cvs_exclude)
 958                 argstr[x++] = 'C';
 959         if (ignore_times)
 960                 argstr[x++] = 'I';
 961         if (relative_paths)
 962                 argstr[x++] = 'R';
 963         if (one_file_system)
 964                 argstr[x++] = 'x';
 965         if (sparse_files)
 966                 argstr[x++] = 'S';
 967         if (do_compression)
 968                 argstr[x++] = 'z';
 969
 970         /* this is a complete hack - blame Rusty
 971
 972            this is a hack to make the list_only (remote file list)
 973            more useful */
 974         if (list_only && !recurse)
 975                 argstr[x++] = 'r';
 976
 977         argstr[x] = 0;
 978
 979         if (x != 1)
 980                 args[ac++] = argstr;
 981
 982         if (block_size) {
 983                 if (asprintf(&arg, "-B%u", block_size) < 0)
 984                         goto oom;
 985                 args[ac++] = arg;
 986         }
 987
 988         if (max_delete && am_sender) {
 989                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
 990                         goto oom;
 991                 args[ac++] = arg;
 992         }
 993
 994         if (io_timeout) {
 995                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
 996                         goto oom;
 997                 args[ac++] = arg;
 998         }
 999
1000         if (bwlimit) {
1001                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1002                         goto oom;
1003                 args[ac++] = arg;
1004         }
1005
1006         if (backup_dir) {
1007                 args[ac++] = "--backup-dir";
1008                 args[ac++] = backup_dir;
1009         }
1010
1011         /* Only send --suffix if it specifies a non-default value. */
1012         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1013                 /* We use the following syntax to avoid weirdness with '~'. */
1014                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1015                         goto oom;
1016                 args[ac++] = arg;
1017         }
1018
1019         if (am_sender) {
1020                 if (delete_excluded)
1021                         args[ac++] = "--delete-excluded";
1022                 else if (delete_mode)
1023                         args[ac++] = "--delete";
1024
1025                 if (delete_after)
1026                         args[ac++] = "--delete-after";
1027
1028                 if (force_delete)
1029                         args[ac++] = "--force";
1030         }
1031
1032         if (size_only)
1033                 args[ac++] = "--size-only";
1034
1035         if (modify_window_set) {
1036                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1037                         goto oom;
1038                 args[ac++] = arg;
1039         }
1040
1041         if (checksum_seed) {
1042                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1043                         goto oom;
1044                 args[ac++] = arg;
1045         }
1046
1047         if (partial_dir && am_sender) {
1048                 args[ac++] = "--partial-dir";
1049                 args[ac++] = partial_dir;
1050         } else if (keep_partial)
1051                 args[ac++] = "--partial";
1052
1053         if (ignore_errors)
1054                 args[ac++] = "--ignore-errors";
1055
1056         if (copy_unsafe_links)
1057                 args[ac++] = "--copy-unsafe-links";
1058
1059         if (safe_symlinks)
1060                 args[ac++] = "--safe-links";
1061
1062         if (numeric_ids)
1063                 args[ac++] = "--numeric-ids";
1064
1065         if (only_existing && am_sender)
1066                 args[ac++] = "--existing";
1067
1068         if (opt_ignore_existing && am_sender)
1069                 args[ac++] = "--ignore-existing";
1070
1071         if (inplace)
1072                 args[ac++] = "--inplace";
1073
1074         if (tmpdir) {
1075                 args[ac++] = "--temp-dir";
1076                 args[ac++] = tmpdir;
1077         }
1078
1079         if (compare_dest && am_sender) {
1080                 /* the server only needs this option if it is not the sender,
1081                  *   and it may be an older version that doesn't know this
1082                  *   option, so don't send it if client is the sender.
1083                  */
1084                 args[ac++] = link_dest ? "--link-dest" : "--compare-dest";
1085                 args[ac++] = compare_dest;
1086         }
1087
1088         if (files_from && (!am_sender || remote_filesfrom_file)) {
1089                 if (remote_filesfrom_file) {
1090                         args[ac++] = "--files-from";
1091                         args[ac++] = remote_filesfrom_file;
1092                         if (eol_nulls)
1093                                 args[ac++] = "--from0";
1094                 } else {
1095                         args[ac++] = "--files-from=-";
1096                         args[ac++] = "--from0";
1097                 }
1098         }
1099
1100         *argc = ac;
1101         return;
1102
1103     oom:
1104         out_of_memory("server_options");
1105 }
1106
1107 /**
1108  * Return the position of a ':' IF it is not part of a filename (i.e. as
1109  * long as it doesn't occur after a slash.
1110  */
1111 char *find_colon(char *s)
1112 {
1113         char *p, *p2;
1114
1115         p = strchr(s,':');
1116         if (!p)
1117                 return NULL;
1118
1119         /* now check to see if there is a / in the string before the : - if there is then
1120            discard the colon on the assumption that the : is part of a filename */
1121         p2 = strchr(s,'/');
1122         if (p2 && p2 < p)
1123                 return NULL;
1124
1125         return p;
1126 }