main.c revision 1.12
1 /* $NetBSD: main.c,v 1.12 2001/11/01 16:31:48 tron Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/9/93"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.12 2001/11/01 16:31:48 tron Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 52 #include <err.h> 53 #include <errno.h> 54 #include <pwd.h> 55 56 #include "defs.h" 57 58 #define NHOSTS 100 59 60 /* 61 * Remote distribution program. 62 */ 63 64 char *distfile = NULL; 65 #define _RDIST_TMP "/rdistXXXXXX" 66 char tempfile[sizeof _PATH_TMP + sizeof _RDIST_TMP + 1]; 67 char *tempname; 68 69 int debug; /* debugging flag */ 70 int nflag; /* NOP flag, just print commands without executing */ 71 int qflag; /* Quiet. Don't print messages */ 72 int options; /* global options */ 73 int iamremote; /* act as remote server for transfering files */ 74 75 FILE *fin = NULL; /* input file pointer */ 76 int rem = -1; /* file descriptor to remote source/sink process */ 77 char host[MAXHOSTNAMELEN + 1]; /* host name */ 78 int nerrs; /* number of errors while sending/receiving */ 79 char user[34]; /* user's name */ 80 char homedir[PATH_MAX]; /* user's home directory */ 81 uid_t userid; /* user's user ID */ 82 gid_t groupid; /* user's group ID */ 83 84 struct passwd *pw; /* pointer to static area used by getpwent */ 85 struct group *gr; /* pointer to static area used by getgrent */ 86 87 int main __P((int, char **)); 88 static void usage __P((void)); 89 static void docmdargs __P((int, char *[])); 90 91 int 92 main(argc, argv) 93 int argc; 94 char *argv[]; 95 { 96 char *arg; 97 int cmdargs = 0; 98 char *dhosts[NHOSTS], **hp = dhosts; 99 int fd; 100 101 pw = getpwuid(userid = getuid()); 102 if (pw == NULL) { 103 fprintf(stderr, "%s: Who are you?\n", argv[0]); 104 exit(1); 105 } 106 strcpy(user, pw->pw_name); 107 strcpy(homedir, pw->pw_dir); 108 groupid = pw->pw_gid; 109 gethostname(host, sizeof(host)); 110 host[sizeof(host) - 1] = '\0'; 111 strcpy(tempfile, _PATH_TMP); 112 strcat(tempfile, _RDIST_TMP); 113 if ((tempname = strrchr(tempfile, '/')) != 0) 114 tempname++; 115 else 116 tempname = tempfile; 117 118 while (--argc > 0) { 119 if ((arg = *++argv)[0] != '-') 120 break; 121 if (!strcmp(arg, "-Server")) 122 iamremote++; 123 else while (*++arg) 124 switch (*arg) { 125 case 'f': 126 if (--argc <= 0) 127 usage(); 128 distfile = *++argv; 129 if (distfile[0] == '-' && distfile[1] == '\0') 130 fin = stdin; 131 break; 132 133 case 'm': 134 if (--argc <= 0) 135 usage(); 136 if (hp >= &dhosts[NHOSTS-2]) { 137 fprintf(stderr, "rdist: too many destination hosts\n"); 138 exit(1); 139 } 140 *hp++ = *++argv; 141 break; 142 143 case 'd': 144 if (--argc <= 0) 145 usage(); 146 define(*++argv); 147 break; 148 149 case 'D': 150 debug++; 151 break; 152 153 case 'c': 154 cmdargs++; 155 break; 156 157 case 'n': 158 if (options & VERIFY) { 159 printf("rdist: -n overrides -v\n"); 160 options &= ~VERIFY; 161 } 162 nflag++; 163 break; 164 165 case 'q': 166 qflag++; 167 break; 168 169 case 'b': 170 options |= COMPARE; 171 break; 172 173 case 'R': 174 options |= REMOVE; 175 break; 176 177 case 'v': 178 if (nflag) { 179 printf("rdist: -n overrides -v\n"); 180 break; 181 } 182 options |= VERIFY; 183 break; 184 185 case 'w': 186 options |= WHOLE; 187 break; 188 189 case 'y': 190 options |= YOUNGER; 191 break; 192 193 case 'h': 194 options |= FOLLOW; 195 break; 196 197 case 'i': 198 options |= IGNLNKS; 199 break; 200 201 default: 202 usage(); 203 } 204 } 205 *hp = NULL; 206 207 seteuid(userid); 208 fd = mkstemp(tempfile); 209 if (fd == -1) 210 err(1, "could not make a temporary file"); 211 close (fd); 212 213 if (iamremote) { 214 server(); 215 unlink(tempfile); 216 exit(nerrs != 0); 217 } 218 219 if (cmdargs) 220 docmdargs(argc, argv); 221 else { 222 if (fin == NULL) { 223 if (distfile == NULL) { 224 if ((fin = fopen("distfile","r")) == NULL) 225 fin = fopen("Distfile", "r"); 226 } else 227 fin = fopen(distfile, "r"); 228 if (fin == NULL) { 229 perror(distfile ? distfile : "distfile"); 230 unlink(tempfile); 231 exit(1); 232 } 233 } 234 yyparse(); 235 if (nerrs == 0) 236 docmds(dhosts, argc, argv); 237 } 238 239 unlink(tempfile); 240 exit(nerrs != 0); 241 } 242 243 static void 244 usage() 245 { 246 printf("Usage: rdist [-nqbRhivwyD] [-f distfile] [-d var=value] [-m host] [file ...]\n"); 247 printf("or: rdist [-nqbRhivwyD] -c source [...] machine[:dest]\n"); 248 exit(1); 249 } 250 251 /* 252 * rcp like interface for distributing files. 253 */ 254 static void 255 docmdargs(nargs, args) 256 int nargs; 257 char *args[]; 258 { 259 struct namelist *nl, *prev; 260 char *cp; 261 struct namelist *files, *hosts; 262 struct subcmd *cmds; 263 char *dest; 264 static struct namelist tnl = { NULL, NULL }; 265 int i; 266 267 if (nargs < 2) 268 usage(); 269 270 files = NULL; 271 prev = NULL; 272 for (i = 0; i < nargs - 1; i++) { 273 nl = makenl(args[i]); 274 if (prev == NULL) 275 files = prev = nl; 276 else { 277 prev->n_next = nl; 278 prev = nl; 279 } 280 } 281 282 cp = args[i]; 283 if ((dest = strchr(cp, ':')) != NULL) 284 *dest++ = '\0'; 285 tnl.n_name = cp; 286 hosts = expand(&tnl, E_ALL); 287 if (nerrs) 288 return; 289 290 if (dest == NULL || *dest == '\0') 291 cmds = NULL; 292 else { 293 cmds = makesubcmd(INSTALL); 294 cmds->sc_options = options; 295 cmds->sc_name = dest; 296 } 297 298 if (debug) { 299 printf("docmdargs()\nfiles = "); 300 prnames(files); 301 printf("hosts = "); 302 prnames(hosts); 303 } 304 insert(NULL, files, hosts, cmds); 305 docmds(NULL, 0, NULL); 306 } 307 308 /* 309 * Print a list of NAME blocks (mostly for debugging). 310 */ 311 void 312 prnames(nl) 313 struct namelist *nl; 314 { 315 printf("( "); 316 while (nl != NULL) { 317 printf("%s ", nl->n_name); 318 nl = nl->n_next; 319 } 320 printf(")\n"); 321 } 322
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