usr.bin/rdist/main.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1983, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)main.c   8.1 (Berkeley) 6/9/93
  35  * $FreeBSD: src/usr.bin/rdist/main.c,v 1.5 1999/08/28 01:05:07 peter Exp $
  36  * $DragonFly: src/usr.bin/rdist/main.c,v 1.5 2008/10/16 01:52:33 swildner Exp $
  37  */
  38 /*
  39  * Remote distribution program.
  40  */
  41
  42 #include <stdarg.h>
  43
  44 #include "defs.h"
  45
  46 #define NHOSTS 100
  47 #define _RDIST_TMP      "/rdistXXXXXX"
  48
  49 char    *distfile = NULL;
  50 char    tempfile[sizeof _PATH_TMP + sizeof _RDIST_TMP + 1];
  51 char    *tempname;
  52
  53 int     debug;          /* debugging flag */
  54 int     nflag;          /* NOP flag, just print commands without executing */
  55 int     qflag;          /* Quiet. Don't print messages */
  56 int     options;        /* global options */
  57 int     iamremote;      /* act as remote server for transfering files */
  58
  59 FILE    *fin = NULL;    /* input file pointer */
  60 int     rem = -1;       /* file descriptor to remote source/sink process */
  61 char    host[32];       /* host name */
  62 int     nerrs;          /* number of errors while sending/receiving */
  63 char    user[10];       /* user's name */
  64 char    homedir[128];   /* user's home directory */
  65 int     userid;         /* user's user ID */
  66 int     groupid;        /* user's group ID */
  67 char    *path_rsh = _PATH_RSH;  /* rsh (or equiv command) path */
  68
  69 struct  passwd *pw;     /* pointer to static area used by getpwent */
  70 struct  group *gr;      /* pointer to static area used by getgrent */
  71
  72 static void usage(void);
  73 static void docmdargs(int, char *[]);
  74
  75 int
  76 main(int argc, char **argv)
  77 {
  78         char *arg;
  79         int cmdargs;
  80         char *dhosts[NHOSTS], **hp = dhosts;
  81
  82         cmdargs = 0;
  83
  84         pw = getpwuid(userid = getuid());
  85         if (pw == NULL) {
  86                 fprintf(stderr, "%s: Who are you?\n", argv[0]);
  87                 exit(1);
  88         }
  89         strcpy(user, pw->pw_name);
  90         strcpy(homedir, pw->pw_dir);
  91         groupid = pw->pw_gid;
  92         gethostname(host, sizeof(host));
  93         strcpy(tempfile, _PATH_TMP);
  94         strcat(tempfile, _RDIST_TMP);
  95         if ((tempname = rindex(tempfile, '/')) != 0)
  96                 tempname++;
  97         else
  98                 tempname = tempfile;
  99
 100         while (--argc > 0) {
 101                 if ((arg = *++argv)[0] != '-')
 102                         break;
 103                 if (!strcmp(arg, "-Server"))
 104                         iamremote++;
 105                 else while (*++arg)
 106                         switch (*arg) {
 107                         case 'P':
 108                                 if (--argc <= 0)
 109                                         usage();
 110                                 path_rsh = *++argv;
 111                                 break;
 112
 113                         case 'f':
 114                                 if (--argc <= 0)
 115                                         usage();
 116                                 distfile = *++argv;
 117                                 if (distfile[0] == '-' && distfile[1] == '\0')
 118                                         fin = stdin;
 119                                 break;
 120
 121                         case 'm':
 122                                 if (--argc <= 0)
 123                                         usage();
 124                                 if (hp >= &dhosts[NHOSTS-2]) {
 125                                         fprintf(stderr, "rdist: too many destination hosts\n");
 126                                         exit(1);
 127                                 }
 128                                 *hp++ = *++argv;
 129                                 break;
 130
 131                         case 'd':
 132                                 if (--argc <= 0)
 133                                         usage();
 134                                 define(*++argv);
 135                                 break;
 136
 137                         case 'D':
 138                                 debug++;
 139                                 break;
 140
 141                         case 'c':
 142                                 cmdargs++;
 143                                 break;
 144
 145                         case 'n':
 146                                 if (options & VERIFY) {
 147                                         printf("rdist: -n overrides -v\n");
 148                                         options &= ~VERIFY;
 149                                 }
 150                                 nflag++;
 151                                 break;
 152
 153                         case 'q':
 154                                 qflag++;
 155                                 break;
 156
 157                         case 'b':
 158                                 options |= COMPARE;
 159                                 break;
 160
 161                         case 'R':
 162                                 options |= REMOVE;
 163                                 break;
 164
 165                         case 'v':
 166                                 if (nflag) {
 167                                         printf("rdist: -n overrides -v\n");
 168                                         break;
 169                                 }
 170                                 options |= VERIFY;
 171                                 break;
 172
 173                         case 'w':
 174                                 options |= WHOLE;
 175                                 break;
 176
 177                         case 'y':
 178                                 options |= YOUNGER;
 179                                 break;
 180
 181                         case 'h':
 182                                 options |= FOLLOW;
 183                                 break;
 184
 185                         case 'i':
 186                                 options |= IGNLNKS;
 187                                 break;
 188
 189                         default:
 190                                 usage();
 191                         }
 192         }
 193         *hp = NULL;
 194
 195         seteuid(userid);
 196         mktemp(tempfile);
 197
 198         if (iamremote) {
 199                 server();
 200                 exit(nerrs != 0);
 201         }
 202
 203         if (cmdargs)
 204                 docmdargs(argc, argv);
 205         else {
 206                 if (fin == NULL) {
 207                         if(distfile == NULL) {
 208                                 if((fin = fopen("distfile","r")) == NULL)
 209                                         fin = fopen("Distfile", "r");
 210                         } else
 211                                 fin = fopen(distfile, "r");
 212                         if(fin == NULL) {
 213                                 perror(distfile ? distfile : "distfile");
 214                                 exit(1);
 215                         }
 216                 }
 217                 yyparse();
 218                 if (nerrs == 0)
 219                         docmds(dhosts, argc, argv);
 220         }
 221
 222         exit(nerrs != 0);
 223 }
 224
 225 static void
 226 usage(void)
 227 {
 228         printf("%s\n%s\n%s\n",
 229 "usage: rdist [-nqbhirvwyD] [-P /path/to/rsh ] [-f distfile] [-d var=value]",
 230 "             [-m host] [file ...]",
 231 "       rdist [-nqbhirvwyD] [-P /path/to/rsh ] -c source [...] machine[:dest]");
 232         exit(1);
 233 }
 234
 235 /*
 236  * rcp like interface for distributing files.
 237  */
 238 static void
 239 docmdargs(int nargs, char **args)
 240 {
 241         struct namelist *nl, *prev;
 242         char *cp;
 243         struct namelist *files, *hosts;
 244         struct subcmd *cmds;
 245         char *dest;
 246         static struct namelist tnl = { NULL, NULL };
 247         int i;
 248
 249         files = NULL;
 250
 251         if (nargs < 2)
 252                 usage();
 253
 254         prev = NULL;
 255         for (i = 0; i < nargs - 1; i++) {
 256                 nl = makenl(args[i]);
 257                 if (prev == NULL)
 258                         files = prev = nl;
 259                 else {
 260                         prev->n_next = nl;
 261                         prev = nl;
 262                 }
 263         }
 264
 265         cp = args[i];
 266         if ((dest = index(cp, ':')) != NULL)
 267                 *dest++ = '\0';
 268         tnl.n_name = cp;
 269         hosts = expand(&tnl, E_ALL);
 270         if (nerrs)
 271                 exit(1);
 272
 273         if (dest == NULL || *dest == '\0')
 274                 cmds = NULL;
 275         else {
 276                 cmds = makesubcmd(INSTALL);
 277                 cmds->sc_options = options;
 278                 cmds->sc_name = dest;
 279         }
 280
 281         if (debug) {
 282                 printf("docmdargs()\nfiles = ");
 283                 prnames(files);
 284                 printf("hosts = ");
 285                 prnames(hosts);
 286         }
 287         insert(NULL, files, hosts, cmds);
 288         docmds(NULL, 0, NULL);
 289 }
 290
 291 /*
 292  * Print a list of NAME blocks (mostly for debugging).
 293  */
 294 void
 295 prnames(struct namelist *nl)
 296 {
 297         printf("( ");
 298         while (nl != NULL) {
 299                 printf("%s ", nl->n_name);
 300                 nl = nl->n_next;
 301         }
 302         printf(")\n");
 303 }
 304
 305
 306 void
 307 warn(const char *fmt, ...)
 308 {
 309         extern int yylineno;
 310         va_list ap;
 311
 312         va_start(ap, fmt);
 313         fprintf(stderr, "rdist: line %d: Warning: ", yylineno);
 314         vfprintf(stderr, fmt, ap);
 315         fprintf(stderr, "\n");
 316         va_end(ap);
 317 }