usr.sbin/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 <string.h>
  36 #include <sysexits.h>
  37 #include <unistd.h>
  38
  39 #include "pw.h"
  40
  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         PWF_REGULAR,
  59         setpwent,
  60         endpwent,
  61         getpwent,
  62         getpwuid,
  63         getpwnam,
  64         setgrent,
  65         endgrent,
  66         getgrent,
  67         getgrgid,
  68         getgrnam,
  69
  70 };
  71 struct 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
  86 static 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
 105 struct pwconf conf;
 106
 107 static int      getindex(const char *words[], const char *word);
 108 static void     cmdhelp(int mode, int which);
 109
 110 int
 111 main(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
 200 static int
 201 getindex(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
 219 static void
 220 cmdhelp(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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 rootdir     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 }