1 /*- 2 * Copyright (C) 1996 3 * David L. Nugent. 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 * 14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/usr.sbin/pw/pw.c,v 1.18.2.5 2001/07/19 01:46:55 kris Exp $ 27 * $DragonFly: src/usr.sbin/pw/pw.c,v 1.3 2004/12/18 22:48:04 swildner Exp $ 28 */ 29 30 #include <err.h> 31 #include <fcntl.h> 32 #include <locale.h> 33 #include <paths.h> 34 #include <sys/wait.h> 35 #include "pw.h" 36 37 #if !defined(_PATH_YP) 38 #define _PATH_YP "/var/yp/" 39 #endif 40 const char *Modes[] = { 41 "add", "del", "mod", "show", "next", 42 NULL}; 43 const char *Which[] = {"user", "group", NULL}; 44 static const char *Combo1[] = { 45 "useradd", "userdel", "usermod", "usershow", "usernext", 46 "lock", "unlock", 47 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", 48 NULL}; 49 static const char *Combo2[] = { 50 "adduser", "deluser", "moduser", "showuser", "nextuser", 51 "lock", "unlock", 52 "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", 53 NULL}; 54 55 struct pwf PWF = 56 { 57 0, 58 setpwent, 59 endpwent, 60 getpwent, 61 getpwuid, 62 getpwnam, 63 pwdb, 64 setgrent, 65 endgrent, 66 getgrent, 67 getgrgid, 68 getgrnam, 69 grdb 70 71 }; 72 struct pwf VPWF = 73 { 74 1, 75 vsetpwent, 76 vendpwent, 77 vgetpwent, 78 vgetpwuid, 79 vgetpwnam, 80 vpwdb, 81 vsetgrent, 82 vendgrent, 83 vgetgrent, 84 vgetgrgid, 85 vgetgrnam, 86 vgrdb 87 }; 88 89 static struct cargs arglist; 90 91 static int getindex(const char *words[], const char *word); 92 static void cmdhelp(int mode, int which); 93 94 95 int 96 main(int argc, char *argv[]) 97 { 98 int ch; 99 int mode = -1; 100 int which = -1; 101 char *config = NULL; 102 struct userconf *cnf; 103 104 static const char *opts[W_NUM][M_NUM] = 105 { 106 { /* user */ 107 "V:C:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db:NPy:Y", 108 "V:C:qn:u:rY", 109 "V:C:qn:u:c:d:e:p:g:G:ml:k:s:w:L:h:FNPY", 110 "V:C:qn:u:FPa7", 111 "V:C:q", 112 "V:C:q", 113 "V:C:q" 114 }, 115 { /* grp */ 116 "V:C:qn:g:h:M:pNPY", 117 "V:C:qn:g:Y", 118 "V:C:qn:g:l:h:FM:m:NPY", 119 "V:C:qn:g:FPa", 120 "V:C:q" 121 } 122 }; 123 124 static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) = 125 { /* Request handlers */ 126 pw_user, 127 pw_group 128 }; 129 130 umask(0); /* We wish to handle this manually */ 131 LIST_INIT(&arglist); 132 133 setlocale(LC_ALL, ""); 134 135 /* 136 * Break off the first couple of words to determine what exactly 137 * we're being asked to do 138 */ 139 while (argc > 1) { 140 int tmp; 141 142 if (*argv[1] == '-') { 143 /* 144 * Special case, allow pw -V<dir> <operation> [args] for scripts etc. 145 */ 146 if (argv[1][1] == 'V') { 147 optarg = &argv[1][2]; 148 if (*optarg == '\0') { 149 optarg = argv[2]; 150 ++argv; 151 --argc; 152 } 153 addarg(&arglist, 'V', optarg); 154 } else 155 break; 156 } 157 else if (mode == -1 && (tmp = getindex(Modes, argv[1])) != -1) 158 mode = tmp; 159 else if (which == -1 && (tmp = getindex(Which, argv[1])) != -1) 160 which = tmp; 161 else if ((mode == -1 && which == -1) && 162 ((tmp = getindex(Combo1, argv[1])) != -1 || 163 (tmp = getindex(Combo2, argv[1])) != -1)) { 164 which = tmp / M_NUM; 165 mode = tmp % M_NUM; 166 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL) 167 cmdhelp(mode, which); 168 else if (which != -1 && mode != -1) 169 addarg(&arglist, 'n', argv[1]); 170 else 171 errx(EX_USAGE, "unknown keyword `%s'", argv[1]); 172 ++argv; 173 --argc; 174 } 175 176 /* 177 * Bail out unless the user is specific! 178 */ 179 if (mode == -1 || which == -1) 180 cmdhelp(mode, which); 181 182 /* 183 * We know which mode we're in and what we're about to do, so now 184 * let's dispatch the remaining command line args in a genric way. 185 */ 186 optarg = NULL; 187 188 while ((ch = getopt(argc, argv, opts[which][mode])) != -1) { 189 if (ch == '?') 190 errx(EX_USAGE, "unknown switch"); 191 else 192 addarg(&arglist, ch, optarg); 193 optarg = NULL; 194 } 195 196 /* 197 * Must be root to attempt an update 198 */ 199 if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL) 200 errx(EX_NOPERM, "you must be root to run this program"); 201 202 /* 203 * We should immediately look for the -q 'quiet' switch so that we 204 * don't bother with extraneous errors 205 */ 206 if (getarg(&arglist, 'q') != NULL) 207 freopen(_PATH_DEVNULL, "w", stderr); 208 209 /* 210 * Set our base working path if not overridden 211 */ 212 213 config = getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL; 214 215 if (getarg(&arglist, 'V') != NULL) { 216 char * etcpath = getarg(&arglist, 'V')->val; 217 if (*etcpath) { 218 if (config == NULL) { /* Only override config location if -C not specified */ 219 config = malloc(MAXPATHLEN); 220 snprintf(config, MAXPATHLEN, "%s/pw.conf", etcpath); 221 } 222 memcpy(&PWF, &VPWF, sizeof PWF); 223 setpwdir(etcpath); 224 setgrdir(etcpath); 225 } 226 } 227 228 /* 229 * Now, let's do the common initialisation 230 */ 231 cnf = read_userconfig(config); 232 233 ch = funcs[which] (cnf, mode, &arglist); 234 235 /* 236 * If everything went ok, and we've been asked to update 237 * the NIS maps, then do it now 238 */ 239 if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) { 240 pid_t pid; 241 242 fflush(NULL); 243 if (chdir(_PATH_YP) == -1) 244 warn("chdir(" _PATH_YP ")"); 245 else if ((pid = fork()) == -1) 246 warn("fork()"); 247 else if (pid == 0) { 248 /* Is make anywhere else? */ 249 execlp("/usr/bin/make", "make", NULL); 250 _exit(1); 251 } else { 252 int i; 253 waitpid(pid, &i, 0); 254 if ((i = WEXITSTATUS(i)) != 0) 255 errx(ch, "make exited with status %d", i); 256 else 257 pw_log(cnf, mode, which, "NIS maps updated"); 258 } 259 } 260 return ch; 261 } 262 263 264 static int 265 getindex(const char *words[], const char *word) 266 { 267 int i = 0; 268 269 while (words[i]) { 270 if (strcmp(words[i], word) == 0) 271 return i; 272 i++; 273 } 274 return -1; 275 } 276 277 278 /* 279 * This is probably an overkill for a cmdline help system, but it reflects 280 * the complexity of the command line. 281 */ 282 283 static void 284 cmdhelp(int mode, int which) 285 { 286 if (which == -1) 287 fprintf(stderr, "usage:\n pw [user|group|lock|unlock] [add|del|mod|show|next] [help|switches/values]\n"); 288 else if (mode == -1) 289 fprintf(stderr, "usage:\n pw %s [add|del|mod|show|next] [help|switches/values]\n", Which[which]); 290 else { 291 292 /* 293 * We need to give mode specific help 294 */ 295 static const char *help[W_NUM][M_NUM] = 296 { 297 { 298 "usage: pw useradd [name] [switches]\n" 299 "\t-V etcdir alternate /etc location\n" 300 "\t-C config configuration file\n" 301 "\t-q quiet operation\n" 302 " Adding users:\n" 303 "\t-n name login name\n" 304 "\t-u uid user id\n" 305 "\t-c comment user name/comment\n" 306 "\t-d directory home directory\n" 307 "\t-e date account expiry date\n" 308 "\t-p date password expiry date\n" 309 "\t-g grp initial group\n" 310 "\t-G grp1,grp2 additional groups\n" 311 "\t-m [ -k dir ] create and set up home\n" 312 "\t-s shell name of login shell\n" 313 "\t-o duplicate uid ok\n" 314 "\t-L class user class\n" 315 "\t-h fd read password on fd\n" 316 "\t-Y update NIS maps\n" 317 "\t-N no update\n" 318 " Setting defaults:\n" 319 "\t-V etcdir alternate /etc location\n" 320 "\t-D set user defaults\n" 321 "\t-b dir default home root dir\n" 322 "\t-e period default expiry period\n" 323 "\t-p period default password change period\n" 324 "\t-g group default group\n" 325 "\t-G grp1,grp2 additional groups\n" 326 "\t-L class default user class\n" 327 "\t-k dir default home skeleton\n" 328 "\t-u min,max set min,max uids\n" 329 "\t-i min,max set min,max gids\n" 330 "\t-w method set default password method\n" 331 "\t-s shell default shell\n" 332 "\t-y path set NIS passwd file path\n", 333 "usage: pw userdel [uid|name] [switches]\n" 334 "\t-V etcdir alternate /etc location\n" 335 "\t-n name login name\n" 336 "\t-u uid user id\n" 337 "\t-Y update NIS maps\n" 338 "\t-r remove home & contents\n", 339 "usage: pw usermod [uid|name] [switches]\n" 340 "\t-V etcdir alternate /etc location\n" 341 "\t-C config configuration file\n" 342 "\t-q quiet operation\n" 343 "\t-F force add if no user\n" 344 "\t-n name login name\n" 345 "\t-u uid user id\n" 346 "\t-c comment user name/comment\n" 347 "\t-d directory home directory\n" 348 "\t-e date account expiry date\n" 349 "\t-p date password expiry date\n" 350 "\t-g grp initial group\n" 351 "\t-G grp1,grp2 additional groups\n" 352 "\t-l name new login name\n" 353 "\t-L class user class\n" 354 "\t-m [ -k dir ] create and set up home\n" 355 "\t-s shell name of login shell\n" 356 "\t-w method set new password using method\n" 357 "\t-h fd read password on fd\n" 358 "\t-Y update NIS maps\n" 359 "\t-N no update\n", 360 "usage: pw usershow [uid|name] [switches]\n" 361 "\t-V etcdir alternate /etc location\n" 362 "\t-n name login name\n" 363 "\t-u uid user id\n" 364 "\t-F force print\n" 365 "\t-P prettier format\n" 366 "\t-a print all users\n" 367 "\t-7 print in v7 format\n", 368 "usage: pw usernext [switches]\n" 369 "\t-V etcdir alternate /etc location\n" 370 "\t-C config configuration file\n" 371 "\t-q quiet operation\n", 372 "usage pw: lock [switches]\n" 373 "\t-V etcdir alternate /etc locations\n" 374 "\t-C config configuration file\n" 375 "\t-q quiet operation\n", 376 "usage pw: unlock [switches]\n" 377 "\t-V etcdir alternate /etc locations\n" 378 "\t-C config configuration file\n" 379 "\t-q quiet operation\n" 380 }, 381 { 382 "usage: pw groupadd [group|gid] [switches]\n" 383 "\t-V etcdir alternate /etc location\n" 384 "\t-C config configuration file\n" 385 "\t-q quiet operation\n" 386 "\t-n group group name\n" 387 "\t-g gid group id\n" 388 "\t-M usr1,usr2 add users as group members\n" 389 "\t-o duplicate gid ok\n" 390 "\t-Y update NIS maps\n" 391 "\t-N no update\n", 392 "usage: pw groupdel [group|gid] [switches]\n" 393 "\t-V etcdir alternate /etc location\n" 394 "\t-n name group name\n" 395 "\t-g gid group id\n" 396 "\t-Y update NIS maps\n", 397 "usage: pw groupmod [group|gid] [switches]\n" 398 "\t-V etcdir alternate /etc location\n" 399 "\t-C config configuration file\n" 400 "\t-q quiet operation\n" 401 "\t-F force add if not exists\n" 402 "\t-n name group name\n" 403 "\t-g gid group id\n" 404 "\t-M usr1,usr2 replaces users as group members\n" 405 "\t-m usr1,usr2 add users as group members\n" 406 "\t-l name new group name\n" 407 "\t-Y update NIS maps\n" 408 "\t-N no update\n", 409 "usage: pw groupshow [group|gid] [switches]\n" 410 "\t-V etcdir alternate /etc location\n" 411 "\t-n name group name\n" 412 "\t-g gid group id\n" 413 "\t-F force print\n" 414 "\t-P prettier format\n" 415 "\t-a print all accounting groups\n", 416 "usage: pw groupnext [switches]\n" 417 "\t-V etcdir alternate /etc location\n" 418 "\t-C config configuration file\n" 419 "\t-q quiet operation\n" 420 } 421 }; 422 423 fprintf(stderr, "%s", help[which][mode]); 424 } 425 exit(EXIT_FAILURE); 426 } 427 428 struct carg * 429 getarg(struct cargs * _args, int ch) 430 { 431 struct carg *c = _args->lh_first; 432 433 while (c != NULL && c->ch != ch) 434 c = c->list.le_next; 435 return c; 436 } 437 438 struct carg * 439 addarg(struct cargs * _args, int ch, char *argstr) 440 { 441 struct carg *ca = malloc(sizeof(struct carg)); 442 443 if (ca == NULL) 444 errx(EX_OSERR, "out of memory"); 445 ca->ch = ch; 446 ca->val = argstr; 447 LIST_INSERT_HEAD(_args, ca, list); 448 return ca; 449 } 450