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 27 #ifndef lint 28 static const char rcsid[] = 29 "$FreeBSD$"; 30 #endif /* not lint */ 31 32 #include <err.h> 33 #include <fcntl.h> 34 #include <locale.h> 35 #include <paths.h> 36 #include <sys/wait.h> 37 #include "pw.h" 38 39 #if !defined(_PATH_YP) 40 #define _PATH_YP "/var/yp/" 41 #endif 42 const char *Modes[] = { 43 "add", "del", "mod", "show", "next", 44 NULL}; 45 const char *Which[] = {"user", "group", NULL}; 46 static const char *Combo1[] = { 47 "useradd", "userdel", "usermod", "usershow", "usernext", 48 "lock", "unlock", 49 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", 50 NULL}; 51 static const char *Combo2[] = { 52 "adduser", "deluser", "moduser", "showuser", "nextuser", 53 "lock", "unlock", 54 "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", 55 NULL}; 56 57 struct pwf PWF = 58 { 59 0, 60 setpwent, 61 endpwent, 62 getpwent, 63 getpwuid, 64 getpwnam, 65 pwdb, 66 setgrent, 67 endgrent, 68 getgrent, 69 getgrgid, 70 getgrnam, 71 grdb 72 73 }; 74 struct pwf VPWF = 75 { 76 1, 77 vsetpwent, 78 vendpwent, 79 vgetpwent, 80 vgetpwuid, 81 vgetpwnam, 82 vpwdb, 83 vsetgrent, 84 vendgrent, 85 vgetgrent, 86 vgetgrgid, 87 vgetgrnam, 88 vgrdb 89 }; 90 91 static struct cargs arglist; 92 93 static int getindex(const char *words[], const char *word); 94 static void cmdhelp(int mode, int which); 95 96 97 int 98 main(int argc, char *argv[]) 99 { 100 int ch; 101 int mode = -1; 102 int which = -1; 103 char *config = NULL; 104 struct userconf *cnf; 105 106 static const char *opts[W_NUM][M_NUM] = 107 { 108 { /* user */ 109 "V:C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y", 110 "V:C:qn:u:rY", 111 "V:C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:FNPY", 112 "V:C:qn:u:FPa7", 113 "V:C:q", 114 "V:C:q", 115 "V:C:q" 116 }, 117 { /* grp */ 118 "V:C:qn:g:h:H:M:opNPY", 119 "V:C:qn:g:Y", 120 "V:C:qn:d:g:l:h:H:FM:m:NPY", 121 "V:C:qn:g:FPa", 122 "V:C:q" 123 } 124 }; 125 126 static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) = 127 { /* Request handlers */ 128 pw_user, 129 pw_group 130 }; 131 132 LIST_INIT(&arglist); 133 134 (void)setlocale(LC_ALL, ""); 135 136 /* 137 * Break off the first couple of words to determine what exactly 138 * we're being asked to do 139 */ 140 while (argc > 1) { 141 int tmp; 142 143 if (*argv[1] == '-') { 144 /* 145 * Special case, allow pw -V<dir> <operation> [args] for scripts etc. 146 */ 147 if (argv[1][1] == 'V') { 148 optarg = &argv[1][2]; 149 if (*optarg == '\0') { 150 optarg = argv[2]; 151 ++argv; 152 --argc; 153 } 154 addarg(&arglist, 'V', optarg); 155 } else 156 break; 157 } 158 else if (mode == -1 && (tmp = getindex(Modes, argv[1])) != -1) 159 mode = tmp; 160 else if (which == -1 && (tmp = getindex(Which, argv[1])) != -1) 161 which = tmp; 162 else if ((mode == -1 && which == -1) && 163 ((tmp = getindex(Combo1, argv[1])) != -1 || 164 (tmp = getindex(Combo2, argv[1])) != -1)) { 165 which = tmp / M_NUM; 166 mode = tmp % M_NUM; 167 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL) 168 cmdhelp(mode, which); 169 else if (which != -1 && mode != -1) 170 addarg(&arglist, 'n', argv[1]); 171 else 172 errx(EX_USAGE, "unknown keyword `%s'", argv[1]); 173 ++argv; 174 --argc; 175 } 176 177 /* 178 * Bail out unless the user is specific! 179 */ 180 if (mode == -1 || which == -1) 181 cmdhelp(mode, which); 182 183 /* 184 * We know which mode we're in and what we're about to do, so now 185 * let's dispatch the remaining command line args in a genric way. 186 */ 187 optarg = NULL; 188 189 while ((ch = getopt(argc, argv, opts[which][mode])) != -1) { 190 if (ch == '?') 191 errx(EX_USAGE, "unknown switch"); 192 else 193 addarg(&arglist, ch, optarg); 194 optarg = NULL; 195 } 196 197 /* 198 * Must be root to attempt an update 199 */ 200 if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL) 201 errx(EX_NOPERM, "you must be root to run this program"); 202 203 /* 204 * We should immediately look for the -q 'quiet' switch so that we 205 * don't bother with extraneous errors 206 */ 207 if (getarg(&arglist, 'q') != NULL) 208 freopen(_PATH_DEVNULL, "w", stderr); 209 210 /* 211 * Set our base working path if not overridden 212 */ 213 214 config = getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL; 215 216 if (getarg(&arglist, 'V') != NULL) { 217 char * etcpath = getarg(&arglist, 'V')->val; 218 if (*etcpath) { 219 if (config == NULL) { /* Only override config location if -C not specified */ 220 config = malloc(MAXPATHLEN); 221 snprintf(config, MAXPATHLEN, "%s/pw.conf", etcpath); 222 } 223 memcpy(&PWF, &VPWF, sizeof PWF); 224 setpwdir(etcpath); 225 setgrdir(etcpath); 226 } 227 } 228 229 /* 230 * Now, let's do the common initialisation 231 */ 232 cnf = read_userconfig(config); 233 234 ch = funcs[which] (cnf, mode, &arglist); 235 236 /* 237 * If everything went ok, and we've been asked to update 238 * the NIS maps, then do it now 239 */ 240 if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) { 241 pid_t pid; 242 243 fflush(NULL); 244 if (chdir(_PATH_YP) == -1) 245 warn("chdir(" _PATH_YP ")"); 246 else if ((pid = fork()) == -1) 247 warn("fork()"); 248 else if (pid == 0) { 249 /* Is make anywhere else? */ 250 execlp("/usr/bin/make", "make", (char *)NULL); 251 _exit(1); 252 } else { 253 int i; 254 waitpid(pid, &i, 0); 255 if ((i = WEXITSTATUS(i)) != 0) 256 errx(ch, "make exited with status %d", i); 257 else 258 pw_log(cnf, mode, which, "NIS maps updated"); 259 } 260 } 261 return ch; 262 } 263 264 265 static int 266 getindex(const char *words[], const char *word) 267 { 268 int i = 0; 269 270 while (words[i]) { 271 if (strcmp(words[i], word) == 0) 272 return i; 273 i++; 274 } 275 return -1; 276 } 277 278 279 /* 280 * This is probably an overkill for a cmdline help system, but it reflects 281 * the complexity of the command line. 282 */ 283 284 static void 285 cmdhelp(int mode, int which) 286 { 287 if (which == -1) 288 fprintf(stderr, "usage:\n pw [user|group|lock|unlock] [add|del|mod|show|next] [help|switches/values]\n"); 289 else if (mode == -1) 290 fprintf(stderr, "usage:\n pw %s [add|del|mod|show|next] [help|switches/values]\n", Which[which]); 291 else { 292 293 /* 294 * We need to give mode specific help 295 */ 296 static const char *help[W_NUM][M_NUM] = 297 { 298 { 299 "usage: pw useradd [name] [switches]\n" 300 "\t-V etcdir alternate /etc location\n" 301 "\t-C config configuration file\n" 302 "\t-q quiet operation\n" 303 " Adding users:\n" 304 "\t-n name login name\n" 305 "\t-u uid user id\n" 306 "\t-c comment user name/comment\n" 307 "\t-d directory home directory\n" 308 "\t-e date account expiry date\n" 309 "\t-p date password expiry date\n" 310 "\t-g grp initial group\n" 311 "\t-G grp1,grp2 additional groups\n" 312 "\t-m [ -k dir ] create and set up home\n" 313 "\t-M mode home directory permissions\n" 314 "\t-s shell name of login shell\n" 315 "\t-o duplicate uid ok\n" 316 "\t-L class user class\n" 317 "\t-h fd read password on fd\n" 318 "\t-H fd read encrypted password on fd\n" 319 "\t-Y update NIS maps\n" 320 "\t-N no update\n" 321 " Setting defaults:\n" 322 "\t-V etcdir alternate /etc location\n" 323 "\t-D set user defaults\n" 324 "\t-b dir default home root dir\n" 325 "\t-e period default expiry period\n" 326 "\t-p period default password change period\n" 327 "\t-g group default group\n" 328 "\t-G grp1,grp2 additional groups\n" 329 "\t-L class default user class\n" 330 "\t-k dir default home skeleton\n" 331 "\t-M mode home directory permissions\n" 332 "\t-u min,max set min,max uids\n" 333 "\t-i min,max set min,max gids\n" 334 "\t-w method set default password method\n" 335 "\t-s shell default shell\n" 336 "\t-y path set NIS passwd file path\n", 337 "usage: pw userdel [uid|name] [switches]\n" 338 "\t-V etcdir alternate /etc location\n" 339 "\t-n name login name\n" 340 "\t-u uid user id\n" 341 "\t-Y update NIS maps\n" 342 "\t-r remove home & contents\n", 343 "usage: pw usermod [uid|name] [switches]\n" 344 "\t-V etcdir alternate /etc location\n" 345 "\t-C config configuration file\n" 346 "\t-q quiet operation\n" 347 "\t-F force add if no user\n" 348 "\t-n name login name\n" 349 "\t-u uid user id\n" 350 "\t-c comment user name/comment\n" 351 "\t-d directory home directory\n" 352 "\t-e date account expiry date\n" 353 "\t-p date password expiry date\n" 354 "\t-g grp initial group\n" 355 "\t-G grp1,grp2 additional groups\n" 356 "\t-l name new login name\n" 357 "\t-L class user class\n" 358 "\t-m [ -k dir ] create and set up home\n" 359 "\t-M mode home directory permissions\n" 360 "\t-s shell name of login shell\n" 361 "\t-w method set new password using method\n" 362 "\t-h fd read password on fd\n" 363 "\t-H fd read encrypted password on fd\n" 364 "\t-Y update NIS maps\n" 365 "\t-N no update\n", 366 "usage: pw usershow [uid|name] [switches]\n" 367 "\t-V etcdir alternate /etc location\n" 368 "\t-n name login name\n" 369 "\t-u uid user id\n" 370 "\t-F force print\n" 371 "\t-P prettier format\n" 372 "\t-a print all users\n" 373 "\t-7 print in v7 format\n", 374 "usage: pw usernext [switches]\n" 375 "\t-V etcdir alternate /etc location\n" 376 "\t-C config configuration file\n" 377 "\t-q quiet operation\n", 378 "usage pw: lock [switches]\n" 379 "\t-V etcdir alternate /etc locations\n" 380 "\t-C config configuration file\n" 381 "\t-q quiet operation\n", 382 "usage pw: unlock [switches]\n" 383 "\t-V etcdir alternate /etc locations\n" 384 "\t-C config configuration file\n" 385 "\t-q quiet operation\n" 386 }, 387 { 388 "usage: pw groupadd [group|gid] [switches]\n" 389 "\t-V etcdir alternate /etc location\n" 390 "\t-C config configuration file\n" 391 "\t-q quiet operation\n" 392 "\t-n group group name\n" 393 "\t-g gid group id\n" 394 "\t-M usr1,usr2 add users as group members\n" 395 "\t-o duplicate gid ok\n" 396 "\t-Y update NIS maps\n" 397 "\t-N no update\n", 398 "usage: pw groupdel [group|gid] [switches]\n" 399 "\t-V etcdir alternate /etc location\n" 400 "\t-n name group name\n" 401 "\t-g gid group id\n" 402 "\t-Y update NIS maps\n", 403 "usage: pw groupmod [group|gid] [switches]\n" 404 "\t-V etcdir alternate /etc location\n" 405 "\t-C config configuration file\n" 406 "\t-q quiet operation\n" 407 "\t-F force add if not exists\n" 408 "\t-n name group name\n" 409 "\t-g gid group id\n" 410 "\t-M usr1,usr2 replaces users as group members\n" 411 "\t-m usr1,usr2 add users as group members\n" 412 "\t-d usr1,usr2 delete users as group members\n" 413 "\t-l name new group name\n" 414 "\t-Y update NIS maps\n" 415 "\t-N no update\n", 416 "usage: pw groupshow [group|gid] [switches]\n" 417 "\t-V etcdir alternate /etc location\n" 418 "\t-n name group name\n" 419 "\t-g gid group id\n" 420 "\t-F force print\n" 421 "\t-P prettier format\n" 422 "\t-a print all accounting groups\n", 423 "usage: pw groupnext [switches]\n" 424 "\t-V etcdir alternate /etc location\n" 425 "\t-C config configuration file\n" 426 "\t-q quiet operation\n" 427 } 428 }; 429 430 fprintf(stderr, "%s", help[which][mode]); 431 } 432 exit(EXIT_FAILURE); 433 } 434 435 struct carg * 436 getarg(struct cargs * _args, int ch) 437 { 438 struct carg *c = LIST_FIRST(_args); 439 440 while (c != NULL && c->ch != ch) 441 c = LIST_NEXT(c, list); 442 return c; 443 } 444 445 struct carg * 446 addarg(struct cargs * _args, int ch, char *argstr) 447 { 448 struct carg *ca = malloc(sizeof(struct carg)); 449 450 if (ca == NULL) 451 errx(EX_OSERR, "out of memory"); 452 ca->ch = ch; 453 ca->val = argstr; 454 LIST_INSERT_HEAD(_args, ca, list); 455 return ca; 456 } 457