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