pw/pw.c

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