1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 1996 5 * David L. Nugent. 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 * 16 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <err.h> 30 #include <fcntl.h> 31 #include <locale.h> 32 #include <string.h> 33 #include <sysexits.h> 34 #include <unistd.h> 35 36 #include "pw.h" 37 38 const char *Modes[] = { 39 "add", "del", "mod", "show", "next", 40 NULL}; 41 const char *Which[] = {"user", "group", NULL}; 42 static const char *Combo1[] = { 43 "useradd", "userdel", "usermod", "usershow", "usernext", 44 "lock", "unlock", 45 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", 46 NULL}; 47 static const char *Combo2[] = { 48 "adduser", "deluser", "moduser", "showuser", "nextuser", 49 "lock", "unlock", 50 "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", 51 NULL}; 52 53 struct pwf PWF = 54 { 55 PWF_REGULAR, 56 setpwent, 57 endpwent, 58 getpwent, 59 getpwuid, 60 getpwnam, 61 setgrent, 62 endgrent, 63 getgrent, 64 getgrgid, 65 getgrnam, 66 67 }; 68 struct pwf VPWF = 69 { 70 PWF_ALT, 71 vsetpwent, 72 vendpwent, 73 vgetpwent, 74 vgetpwuid, 75 vgetpwnam, 76 vsetgrent, 77 vendgrent, 78 vgetgrent, 79 vgetgrgid, 80 vgetgrnam, 81 }; 82 83 static int (*cmdfunc[W_NUM][M_NUM])(int argc, char **argv, char *_name) = { 84 { /* user */ 85 pw_user_add, 86 pw_user_del, 87 pw_user_mod, 88 pw_user_show, 89 pw_user_next, 90 pw_user_lock, 91 pw_user_unlock, 92 }, 93 { /* group */ 94 pw_group_add, 95 pw_group_del, 96 pw_group_mod, 97 pw_group_show, 98 pw_group_next, 99 } 100 }; 101 102 struct pwconf conf; 103 104 static int getindex(const char *words[], const char *word); 105 static void cmdhelp(int mode, int which); 106 107 int 108 main(int argc, char *argv[]) 109 { 110 int mode = -1, which = -1, tmp; 111 struct stat st; 112 char arg, *arg1; 113 bool relocated, nis; 114 115 arg1 = NULL; 116 relocated = nis = false; 117 memset(&conf, 0, sizeof(conf)); 118 strlcpy(conf.rootdir, "/", sizeof(conf.rootdir)); 119 strlcpy(conf.etcpath, _PATH_PWD, sizeof(conf.etcpath)); 120 conf.fd = -1; 121 conf.checkduplicate = true; 122 123 setlocale(LC_ALL, ""); 124 125 /* 126 * Break off the first couple of words to determine what exactly 127 * we're being asked to do 128 */ 129 while (argc > 1) { 130 if (*argv[1] == '-') { 131 /* 132 * Special case, allow pw -V<dir> <operation> [args] for scripts etc. 133 */ 134 arg = argv[1][1]; 135 if (arg == 'V' || arg == 'R') { 136 if (relocated) 137 errx(EXIT_FAILURE, "Both '-R' and '-V' " 138 "specified, only one accepted"); 139 relocated = true; 140 optarg = &argv[1][2]; 141 if (*optarg == '\0') { 142 if (stat(argv[2], &st) != 0) 143 errx(EX_OSFILE, \ 144 "no such directory `%s'", 145 argv[2]); 146 if (!S_ISDIR(st.st_mode)) 147 errx(EX_OSFILE, "`%s' not a " 148 "directory", argv[2]); 149 optarg = argv[2]; 150 ++argv; 151 --argc; 152 } 153 memcpy(&PWF, &VPWF, sizeof PWF); 154 if (arg == 'R') { 155 strlcpy(conf.rootdir, optarg, 156 sizeof(conf.rootdir)); 157 PWF._altdir = PWF_ROOTDIR; 158 } 159 snprintf(conf.etcpath, sizeof(conf.etcpath), 160 "%s%s", optarg, arg == 'R' ? 161 _PATH_PWD : ""); 162 } else 163 break; 164 } 165 else if (mode == -1 && (tmp = getindex(Modes, argv[1])) != -1) 166 mode = tmp; 167 else if (which == -1 && (tmp = getindex(Which, argv[1])) != -1) 168 which = tmp; 169 else if ((mode == -1 && which == -1) && 170 ((tmp = getindex(Combo1, argv[1])) != -1 || 171 (tmp = getindex(Combo2, argv[1])) != -1)) { 172 which = tmp / M_NUM; 173 mode = tmp % M_NUM; 174 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL) 175 cmdhelp(mode, which); 176 else if (which != -1 && mode != -1) 177 arg1 = argv[1]; 178 else 179 errx(EX_USAGE, "unknown keyword `%s'", argv[1]); 180 ++argv; 181 --argc; 182 } 183 184 /* 185 * Bail out unless the user is specific! 186 */ 187 if (mode == -1 || which == -1) 188 cmdhelp(mode, which); 189 190 conf.rootfd = open(conf.rootdir, O_DIRECTORY|O_CLOEXEC); 191 if (conf.rootfd == -1) 192 errx(EXIT_FAILURE, "Unable to open '%s'", conf.rootdir); 193 194 return (cmdfunc[which][mode](argc, argv, arg1)); 195 } 196 197 198 static int 199 getindex(const char *words[], const char *word) 200 { 201 int i = 0; 202 203 while (words[i]) { 204 if (strcmp(words[i], word) == 0) 205 return (i); 206 i++; 207 } 208 return (-1); 209 } 210 211 212 /* 213 * This is probably an overkill for a cmdline help system, but it reflects 214 * the complexity of the command line. 215 */ 216 217 static void 218 cmdhelp(int mode, int which) 219 { 220 if (which == -1) 221 fprintf(stderr, "usage:\n pw [user|group|lock|unlock] [add|del|mod|show|next] [help|switches/values]\n"); 222 else if (mode == -1) 223 fprintf(stderr, "usage:\n pw %s [add|del|mod|show|next] [help|switches/values]\n", Which[which]); 224 else { 225 226 /* 227 * We need to give mode specific help 228 */ 229 static const char *help[W_NUM][M_NUM] = 230 { 231 { 232 "usage: pw useradd [name] [switches]\n" 233 "\t-V etcdir alternate /etc location\n" 234 "\t-R rootdir alternate root directory\n" 235 "\t-C config configuration file\n" 236 "\t-q quiet operation\n" 237 " Adding users:\n" 238 "\t-n name login name\n" 239 "\t-u uid user id\n" 240 "\t-c comment user name/comment\n" 241 "\t-d directory home directory\n" 242 "\t-e date account expiry date\n" 243 "\t-p date password expiry date\n" 244 "\t-g grp initial group\n" 245 "\t-G grp1,grp2 additional groups\n" 246 "\t-m [ -k dir ] create and set up home\n" 247 "\t-M mode home directory permissions\n" 248 "\t-s shell name of login shell\n" 249 "\t-o duplicate uid ok\n" 250 "\t-L class user class\n" 251 "\t-h fd read password on fd\n" 252 "\t-H fd read encrypted password on fd\n" 253 "\t-Y update NIS maps\n" 254 "\t-N no update\n" 255 " Setting defaults:\n" 256 "\t-V etcdir alternate /etc location\n" 257 "\t-R rootdir alternate root directory\n" 258 "\t-D set user defaults\n" 259 "\t-b dir default home root dir\n" 260 "\t-e period default expiry period\n" 261 "\t-p period default password change period\n" 262 "\t-g group default group\n" 263 "\t-G grp1,grp2 additional groups\n" 264 "\t-L class default user class\n" 265 "\t-k dir default home skeleton\n" 266 "\t-M mode home directory permissions\n" 267 "\t-u min,max set min,max uids\n" 268 "\t-i min,max set min,max gids\n" 269 "\t-w method set default password method\n" 270 "\t-s shell default shell\n" 271 "\t-y path set NIS passwd file path\n", 272 "usage: pw userdel [uid|name] [switches]\n" 273 "\t-V etcdir alternate /etc location\n" 274 "\t-R rootdir alternate root directory\n" 275 "\t-n name login name\n" 276 "\t-u uid user id\n" 277 "\t-Y update NIS maps\n" 278 "\t-y path set NIS passwd file path\n" 279 "\t-r remove home & contents\n", 280 "usage: pw usermod [uid|name] [switches]\n" 281 "\t-V etcdir alternate /etc location\n" 282 "\t-R rootdir alternate root directory\n" 283 "\t-C config configuration file\n" 284 "\t-q quiet operation\n" 285 "\t-F force add if no user\n" 286 "\t-n name login name\n" 287 "\t-u uid user id\n" 288 "\t-c comment user name/comment\n" 289 "\t-d directory home directory\n" 290 "\t-e date account expiry date\n" 291 "\t-p date password expiry date\n" 292 "\t-g grp initial group\n" 293 "\t-G grp1,grp2 additional groups\n" 294 "\t-l name new login name\n" 295 "\t-L class user class\n" 296 "\t-m [ -k dir ] create and set up home\n" 297 "\t-M mode home directory permissions\n" 298 "\t-s shell name of login shell\n" 299 "\t-w method set new password using method\n" 300 "\t-h fd read password on fd\n" 301 "\t-H fd read encrypted password on fd\n" 302 "\t-Y update NIS maps\n" 303 "\t-y path set NIS passwd file path\n" 304 "\t-N no update\n", 305 "usage: pw usershow [uid|name] [switches]\n" 306 "\t-V etcdir alternate /etc location\n" 307 "\t-R rootdir alternate root directory\n" 308 "\t-n name login name\n" 309 "\t-u uid user id\n" 310 "\t-F force print\n" 311 "\t-P prettier format\n" 312 "\t-a print all users\n" 313 "\t-7 print in v7 format\n", 314 "usage: pw usernext [switches]\n" 315 "\t-V etcdir alternate /etc location\n" 316 "\t-R rootdir alternate root directory\n" 317 "\t-C config configuration file\n" 318 "\t-q quiet operation\n", 319 "usage pw: lock [switches]\n" 320 "\t-V etcdir alternate /etc locations\n" 321 "\t-C config configuration file\n" 322 "\t-q quiet operation\n", 323 "usage pw: unlock [switches]\n" 324 "\t-V etcdir alternate /etc locations\n" 325 "\t-C config configuration file\n" 326 "\t-q quiet operation\n" 327 }, 328 { 329 "usage: pw groupadd [group|gid] [switches]\n" 330 "\t-V etcdir alternate /etc location\n" 331 "\t-R rootdir alternate root directory\n" 332 "\t-C config configuration file\n" 333 "\t-q quiet operation\n" 334 "\t-n group group name\n" 335 "\t-g gid group id\n" 336 "\t-M usr1,usr2 add users as group members\n" 337 "\t-o duplicate gid ok\n" 338 "\t-Y update NIS maps\n" 339 "\t-N no update\n", 340 "usage: pw groupdel [group|gid] [switches]\n" 341 "\t-V etcdir alternate /etc location\n" 342 "\t-R rootdir alternate root directory\n" 343 "\t-n name group name\n" 344 "\t-g gid group id\n" 345 "\t-Y update NIS maps\n", 346 "usage: pw groupmod [group|gid] [switches]\n" 347 "\t-V etcdir alternate /etc location\n" 348 "\t-R rootdir alternate root directory\n" 349 "\t-C config configuration file\n" 350 "\t-q quiet operation\n" 351 "\t-F force add if not exists\n" 352 "\t-n name group name\n" 353 "\t-g gid group id\n" 354 "\t-M usr1,usr2 replaces users as group members\n" 355 "\t-m usr1,usr2 add users as group members\n" 356 "\t-d usr1,usr2 delete users as group members\n" 357 "\t-l name new group name\n" 358 "\t-Y update NIS maps\n" 359 "\t-N no update\n", 360 "usage: pw groupshow [group|gid] [switches]\n" 361 "\t-V etcdir alternate /etc location\n" 362 "\t-R rootdir alternate root directory\n" 363 "\t-n name group name\n" 364 "\t-g gid group id\n" 365 "\t-F force print\n" 366 "\t-P prettier format\n" 367 "\t-a print all accounting groups\n", 368 "usage: pw groupnext [switches]\n" 369 "\t-V etcdir alternate /etc location\n" 370 "\t-R rootdir alternate root directory\n" 371 "\t-C config configuration file\n" 372 "\t-q quiet operation\n" 373 } 374 }; 375 376 fprintf(stderr, "%s", help[which][mode]); 377 } 378 exit(EXIT_FAILURE); 379 } 380