usage.c

   1 /*
   2  * Some usage & version related functions.
   3  *
   4  * Copyright (C) 2002-2020 Wayne Davison
   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 3 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 along
  17  * with this program; if not, visit the http://fsf.org website.
  18  */
  19
  20 #include "rsync.h"
  21 #include "version.h"
  22 #include "latest-year.h"
  23 #include "git-version.h"
  24 #include "default-cvsignore.h"
  25
  26 extern struct name_num_obj valid_checksums;
  27 extern struct name_num_obj valid_compressions;
  28
  29 static char *istring(const char *fmt, int val)
  30 {
  31         char *str;
  32         if (asprintf(&str, fmt, val) < 0)
  33                 out_of_memory("istring");
  34         return str;
  35 }
  36
  37 static void print_info_flags(enum logcode f)
  38 {
  39         STRUCT_STAT *dumstat;
  40         char line_buf[75];
  41         int line_len, j;
  42         char *info_flags[] = {
  43
  44         "*Capabilities",
  45
  46                 istring("%d-bit files", (int)(sizeof (OFF_T) * 8)),
  47                 istring("%d-bit inums", (int)(sizeof dumstat->st_ino * 8)), /* Don't check ino_t! */
  48                 istring("%d-bit timestamps", (int)(sizeof (time_t) * 8)),
  49                 istring("%d-bit long ints", (int)(sizeof (int64) * 8)),
  50
  51 #ifndef HAVE_SOCKETPAIR
  52                 "no "
  53 #endif
  54                         "socketpairs",
  55
  56 #ifndef SUPPORT_LINKS
  57                 "no "
  58 #endif
  59                         "symlinks",
  60
  61 #ifndef CAN_SET_SYMLINK_TIMES
  62                 "no "
  63 #endif
  64                         "symtimes",
  65
  66 #ifndef SUPPORT_HARD_LINKS
  67                 "no "
  68 #endif
  69                         "hardlinks",
  70
  71 #ifndef CAN_HARDLINK_SPECIAL
  72                 "no "
  73 #endif
  74                         "hardlink-specials",
  75
  76 #ifndef CAN_HARDLINK_SYMLINK
  77                 "no "
  78 #endif
  79                         "hardlink-symlinks",
  80
  81 #ifndef INET6
  82                 "no "
  83 #endif
  84                         "IPv6",
  85
  86 #ifndef SUPPORT_ATIMES
  87                 "no "
  88 #endif
  89                         "atimes",
  90
  91                 "batchfiles",
  92
  93 #ifndef HAVE_FTRUNCATE
  94                 "no "
  95 #endif
  96                         "inplace",
  97
  98 #ifndef HAVE_FTRUNCATE
  99                 "no "
 100 #endif
 101                         "append",
 102
 103 #ifndef SUPPORT_ACLS
 104                 "no "
 105 #endif
 106                         "ACLs",
 107
 108 #ifndef SUPPORT_XATTRS
 109                 "no "
 110 #endif
 111                         "xattrs",
 112
 113 #ifdef RSYNC_USE_PROTECTED_ARGS
 114                 "default "
 115 #else
 116                 "optional "
 117 #endif
 118                         "protect-args",
 119
 120 #ifndef ICONV_OPTION
 121                 "no "
 122 #endif
 123                         "iconv",
 124
 125 #ifndef SUPPORT_PREALLOCATION
 126                 "no "
 127 #endif
 128                         "prealloc",
 129
 130 #ifndef HAVE_MKTIME
 131                 "no "
 132 #endif
 133                         "stop-at",
 134
 135 #ifndef SUPPORT_CRTIMES
 136                 "no "
 137 #endif
 138                         "crtimes",
 139
 140         "*Optimizations",
 141
 142 #ifndef HAVE_SIMD
 143                 "no "
 144 #endif
 145                         "SIMD",
 146
 147 #if !defined HAVE_ASM || defined USE_OPENSSL
 148                 "no "
 149 #endif
 150                         "asm",
 151
 152 #ifndef USE_OPENSSL
 153                 "no "
 154 #endif
 155                         "openssl-crypto",
 156
 157                 NULL
 158         };
 159
 160         for (line_len = 0, j = 0; ; j++) {
 161                 char *str = info_flags[j], *next_nfo = str ? info_flags[j+1] : NULL;
 162                 int str_len = str && *str != '*' ? strlen(str) : 1000;
 163                 int need_comma = next_nfo && *next_nfo != '*' ? 1 : 0;
 164                 if (line_len && line_len + 1 + str_len + need_comma >= (int)sizeof line_buf) {
 165                         rprintf(f, "   %s\n", line_buf);
 166                         line_len = 0;
 167                 }
 168                 if (!str)
 169                         break;
 170                 if (*str == '*') {
 171                         rprintf(f, "%s:\n", str+1);
 172                         continue;
 173                 }
 174                 line_len += snprintf(line_buf+line_len, sizeof line_buf - line_len, " %s%s", str, need_comma ? "," : "");
 175         }
 176 }
 177
 178 void print_rsync_version(enum logcode f)
 179 {
 180         char tmpbuf[256], *subprotocol = "";
 181
 182 #if SUBPROTOCOL_VERSION != 0
 183         subprotocol = istring(".PR%d", SUBPROTOCOL_VERSION);
 184 #endif
 185         rprintf(f, "%s  version %s  protocol version %d%s\n",
 186                 RSYNC_NAME, rsync_version(), PROTOCOL_VERSION, subprotocol);
 187
 188         rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
 189         rprintf(f, "Web site: https://rsync.samba.org/\n");
 190
 191         print_info_flags(f);
 192
 193         rprintf(f, "Checksum list:\n");
 194         get_default_nno_list(&valid_checksums, tmpbuf, sizeof tmpbuf, '(');
 195         rprintf(f, "    %s\n", tmpbuf);
 196
 197         rprintf(f, "Compress list:\n");
 198         get_default_nno_list(&valid_compressions, tmpbuf, sizeof tmpbuf, '(');
 199         rprintf(f, "    %s\n", tmpbuf);
 200
 201 #ifdef MAINTAINER_MODE
 202         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 203 #endif
 204
 205 #if SIZEOF_INT64 < 8
 206         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 207 #endif
 208         if (sizeof (int64) != SIZEOF_INT64) {
 209                 rprintf(f,
 210                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 211                         (int) SIZEOF_INT64, (int) sizeof (int64));
 212         }
 213
 214         rprintf(f,"\n");
 215         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 216         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 217         rprintf(f,"General Public Licence for details.\n");
 218 }
 219
 220 void usage(enum logcode F)
 221 {
 222   print_rsync_version(F);
 223
 224   rprintf(F,"\n");
 225   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 226   rprintf(F,"via a fast differencing algorithm.\n");
 227
 228   rprintf(F,"\n");
 229   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 230   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 231   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 232   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 233   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 234   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 235   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 236   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 237   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 238   rprintf(F,"\n");
 239   rprintf(F,"Options\n");
 240 #include "help-rsync.h"
 241   rprintf(F,"\n");
 242   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 243   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 244   rprintf(F,"See https://rsync.samba.org/ for updates, bug reports, and answers\n");
 245 }
 246
 247 void daemon_usage(enum logcode F)
 248 {
 249   print_rsync_version(F);
 250
 251   rprintf(F,"\n");
 252   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
 253 #include "help-rsyncd.h"
 254   rprintf(F,"\n");
 255   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 256   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 257 }
 258
 259 const char *rsync_version(void)
 260 {
 261 #ifdef RSYNC_GITVER
 262         return RSYNC_GITVER;
 263 #else
 264         return RSYNC_VERSION;
 265 #endif
 266 }
 267
 268 const char *default_cvsignore(void)
 269 {
 270         return DEFAULT_CVSIGNORE;
 271 }