pw.c revision 287084
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 28static const char rcsid[] = 29 "$FreeBSD: stable/10/usr.sbin/pw/pw.c 287084 2015-08-23 21:42:27Z bapt $"; 30#endif /* not lint */ 31 32#include <err.h> 33#include <fcntl.h> 34#include <locale.h> 35#include <string.h> 36#include <sysexits.h> 37#include <unistd.h> 38 39#include "pw.h" 40 41const char *Modes[] = { 42 "add", "del", "mod", "show", "next", 43 NULL}; 44const char *Which[] = {"user", "group", NULL}; 45static const char *Combo1[] = { 46 "useradd", "userdel", "usermod", "usershow", "usernext", 47 "lock", "unlock", 48 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", 49 NULL}; 50static const char *Combo2[] = { 51 "adduser", "deluser", "moduser", "showuser", "nextuser", 52 "lock", "unlock", 53 "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", 54 NULL}; 55 56struct pwf PWF = 57{ 58 PWF_REGULAR, 59 setpwent, 60 endpwent, 61 getpwent, 62 getpwuid, 63 getpwnam, 64 setgrent, 65 endgrent, 66 getgrent, 67 getgrgid, 68 getgrnam, 69 70}; 71struct pwf VPWF = 72{ 73 PWF_ALT, 74 vsetpwent, 75 vendpwent, 76 vgetpwent, 77 vgetpwuid, 78 vgetpwnam, 79 vsetgrent, 80 vendgrent, 81 vgetgrent, 82 vgetgrgid, 83 vgetgrnam, 84}; 85 86static int (*cmdfunc[W_NUM][M_NUM])(int argc, char **argv, char *_name) = { 87 { /* user */ 88 pw_user_add, 89 pw_user_del, 90 pw_user_mod, 91 pw_user_show, 92 pw_user_next, 93 pw_user_lock, 94 pw_user_unlock, 95 }, 96 { /* group */ 97 pw_group_add, 98 pw_group_del, 99 pw_group_mod, 100 pw_group_show, 101 pw_group_next, 102 } 103}; 104 105struct pwconf conf; 106 107static int getindex(const char *words[], const char *word); 108static void cmdhelp(int mode, int which); 109 110int 111main(int argc, char *argv[]) 112{ 113 int mode = -1, which = -1, tmp; 114 struct stat st; 115 char arg, *arg1; 116 bool relocated, nis; 117 118 arg1 = NULL; 119 relocated = nis = false; 120 memset(&conf, 0, sizeof(conf)); 121 strlcpy(conf.rootdir, "/", sizeof(conf.rootdir)); 122 strlcpy(conf.etcpath, _PATH_PWD, sizeof(conf.etcpath)); 123 conf.checkduplicate = true; 124 conf.fd = -1; 125 126 setlocale(LC_ALL, ""); 127 128 /* 129 * Break off the first couple of words to determine what exactly 130 * we're being asked to do 131 */ 132 while (argc > 1) { 133 if (*argv[1] == '-') { 134 /* 135 * Special case, allow pw -V<dir> <operation> [args] for scripts etc. 136 */ 137 arg = argv[1][1]; 138 if (arg == 'V' || arg == 'R') { 139 if (relocated) 140 errx(EXIT_FAILURE, "Both '-R' and '-V' " 141 "specified, only one accepted"); 142 relocated = true; 143 optarg = &argv[1][2]; 144 if (*optarg == '\0') { 145 if (stat(argv[2], &st) != 0) 146 errx(EX_OSFILE, \ 147 "no such directory `%s'", 148 argv[2]); 149 if (!S_ISDIR(st.st_mode)) 150 errx(EX_OSFILE, "`%s' not a " 151 "directory", argv[2]); 152 optarg = argv[2]; 153 ++argv; 154 --argc; 155 } 156 memcpy(&PWF, &VPWF, sizeof PWF); 157 if (arg == 'R') { 158 strlcpy(conf.rootdir, optarg, 159 sizeof(conf.rootdir)); 160 PWF._altdir = PWF_ROOTDIR; 161 } 162 snprintf(conf.etcpath, sizeof(conf.etcpath), 163 "%s%s", optarg, arg == 'R' ? "/etc" : ""); 164 } else 165 break; 166 } 167 else if (mode == -1 && (tmp = getindex(Modes, argv[1])) != -1) 168 mode = tmp; 169 else if (which == -1 && (tmp = getindex(Which, argv[1])) != -1) 170 which = tmp; 171 else if ((mode == -1 && which == -1) && 172 ((tmp = getindex(Combo1, argv[1])) != -1 || 173 (tmp = getindex(Combo2, argv[1])) != -1)) { 174 which = tmp / M_NUM; 175 mode = tmp % M_NUM; 176 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL) 177 cmdhelp(mode, which); 178 else if (which != -1 && mode != -1) 179 arg1 = argv[1]; 180 else 181 errx(EX_USAGE, "unknown keyword `%s'", argv[1]); 182 ++argv; 183 --argc; 184 } 185 186 /* 187 * Bail out unless the user is specific! 188 */ 189 if (mode == -1 || which == -1) 190 cmdhelp(mode, which); 191 192 conf.rootfd = open(conf.rootdir, O_DIRECTORY|O_CLOEXEC); 193 if (conf.rootfd == -1) 194 errx(EXIT_FAILURE, "Unable to open '%s'", conf.rootdir); 195 196 return (cmdfunc[which][mode](argc, argv, arg1)); 197} 198 199 200static int 201getindex(const char *words[], const char *word) 202{ 203 int i = 0; 204 205 while (words[i]) { 206 if (strcmp(words[i], word) == 0) 207 return (i); 208 i++; 209 } 210 return (-1); 211} 212 213 214/* 215 * This is probably an overkill for a cmdline help system, but it reflects 216 * the complexity of the command line. 217 */ 218 219static void 220cmdhelp(int mode, int which) 221{ 222 if (which == -1) 223 fprintf(stderr, "usage:\n pw [user|group|lock|unlock] [add|del|mod|show|next] [help|switches/values]\n"); 224 else if (mode == -1) 225 fprintf(stderr, "usage:\n pw %s [add|del|mod|show|next] [help|switches/values]\n", Which[which]); 226 else { 227 228 /* 229 * We need to give mode specific help 230 */ 231 static const char *help[W_NUM][M_NUM] = 232 { 233 { 234 "usage: pw useradd [name] [switches]\n" 235 "\t-V etcdir alternate /etc location\n" 236 "\t-R rootir alternate root directory\n" 237 "\t-C config configuration file\n" 238 "\t-q quiet operation\n" 239 " Adding users:\n" 240 "\t-n name login name\n" 241 "\t-u uid user id\n" 242 "\t-c comment user name/comment\n" 243 "\t-d directory home directory\n" 244 "\t-e date account expiry date\n" 245 "\t-p date password expiry date\n" 246 "\t-g grp initial group\n" 247 "\t-G grp1,grp2 additional groups\n" 248 "\t-m [ -k dir ] create and set up home\n" 249 "\t-M mode home directory permissions\n" 250 "\t-s shell name of login shell\n" 251 "\t-o duplicate uid ok\n" 252 "\t-L class user class\n" 253 "\t-h fd read password on fd\n" 254 "\t-H fd read encrypted password on fd\n" 255 "\t-Y update NIS maps\n" 256 "\t-N no update\n" 257 " Setting defaults:\n" 258 "\t-V etcdir alternate /etc location\n" 259 "\t-R rootir alternate root directory\n" 260 "\t-D set user defaults\n" 261 "\t-b dir default home root dir\n" 262 "\t-e period default expiry period\n" 263 "\t-p period default password change period\n" 264 "\t-g group default group\n" 265 "\t-G grp1,grp2 additional groups\n" 266 "\t-L class default user class\n" 267 "\t-k dir default home skeleton\n" 268 "\t-M mode home directory permissions\n" 269 "\t-u min,max set min,max uids\n" 270 "\t-i min,max set min,max gids\n" 271 "\t-w method set default password method\n" 272 "\t-s shell default shell\n" 273 "\t-y path set NIS passwd file path\n", 274 "usage: pw userdel [uid|name] [switches]\n" 275 "\t-V etcdir alternate /etc location\n" 276 "\t-R rootir alternate root directory\n" 277 "\t-n name login name\n" 278 "\t-u uid user id\n" 279 "\t-Y update NIS maps\n" 280 "\t-y path set NIS passwd file path\n" 281 "\t-r remove home & contents\n", 282 "usage: pw usermod [uid|name] [switches]\n" 283 "\t-V etcdir alternate /etc location\n" 284 "\t-R rootir alternate root directory\n" 285 "\t-C config configuration file\n" 286 "\t-q quiet operation\n" 287 "\t-F force add if no user\n" 288 "\t-n name login name\n" 289 "\t-u uid user id\n" 290 "\t-c comment user name/comment\n" 291 "\t-d directory home directory\n" 292 "\t-e date account expiry date\n" 293 "\t-p date password expiry date\n" 294 "\t-g grp initial group\n" 295 "\t-G grp1,grp2 additional groups\n" 296 "\t-l name new login name\n" 297 "\t-L class user class\n" 298 "\t-m [ -k dir ] create and set up home\n" 299 "\t-M mode home directory permissions\n" 300 "\t-s shell name of login shell\n" 301 "\t-w method set new password using method\n" 302 "\t-h fd read password on fd\n" 303 "\t-H fd read encrypted password on fd\n" 304 "\t-Y update NIS maps\n" 305 "\t-y path set NIS passwd file path\n" 306 "\t-N no update\n", 307 "usage: pw usershow [uid|name] [switches]\n" 308 "\t-V etcdir alternate /etc location\n" 309 "\t-R rootir alternate root directory\n" 310 "\t-n name login name\n" 311 "\t-u uid user id\n" 312 "\t-F force print\n" 313 "\t-P prettier format\n" 314 "\t-a print all users\n" 315 "\t-7 print in v7 format\n", 316 "usage: pw usernext [switches]\n" 317 "\t-V etcdir alternate /etc location\n" 318 "\t-R rootir alternate root directory\n" 319 "\t-C config configuration file\n" 320 "\t-q quiet operation\n", 321 "usage pw: lock [switches]\n" 322 "\t-V etcdir alternate /etc locations\n" 323 "\t-C config configuration file\n" 324 "\t-q quiet operation\n", 325 "usage pw: unlock [switches]\n" 326 "\t-V etcdir alternate /etc locations\n" 327 "\t-C config configuration file\n" 328 "\t-q quiet operation\n" 329 }, 330 { 331 "usage: pw groupadd [group|gid] [switches]\n" 332 "\t-V etcdir alternate /etc location\n" 333 "\t-R rootir alternate root directory\n" 334 "\t-C config configuration file\n" 335 "\t-q quiet operation\n" 336 "\t-n group group name\n" 337 "\t-g gid group id\n" 338 "\t-M usr1,usr2 add users as group members\n" 339 "\t-o duplicate gid ok\n" 340 "\t-Y update NIS maps\n" 341 "\t-N no update\n", 342 "usage: pw groupdel [group|gid] [switches]\n" 343 "\t-V etcdir alternate /etc location\n" 344 "\t-R rootir alternate root directory\n" 345 "\t-n name group name\n" 346 "\t-g gid group id\n" 347 "\t-Y update NIS maps\n", 348 "usage: pw groupmod [group|gid] [switches]\n" 349 "\t-V etcdir alternate /etc location\n" 350 "\t-R rootir alternate root directory\n" 351 "\t-C config configuration file\n" 352 "\t-q quiet operation\n" 353 "\t-F force add if not exists\n" 354 "\t-n name group name\n" 355 "\t-g gid group id\n" 356 "\t-M usr1,usr2 replaces users as group members\n" 357 "\t-m usr1,usr2 add users as group members\n" 358 "\t-d usr1,usr2 delete users as group members\n" 359 "\t-l name new group name\n" 360 "\t-Y update NIS maps\n" 361 "\t-N no update\n", 362 "usage: pw groupshow [group|gid] [switches]\n" 363 "\t-V etcdir alternate /etc location\n" 364 "\t-R rootir alternate root directory\n" 365 "\t-n name group name\n" 366 "\t-g gid group id\n" 367 "\t-F force print\n" 368 "\t-P prettier format\n" 369 "\t-a print all accounting groups\n", 370 "usage: pw groupnext [switches]\n" 371 "\t-V etcdir alternate /etc location\n" 372 "\t-R rootir alternate root directory\n" 373 "\t-C config configuration file\n" 374 "\t-q quiet operation\n" 375 } 376 }; 377 378 fprintf(stderr, "%s", help[which][mode]); 379 } 380 exit(EXIT_FAILURE); 381} 382