usr/src/cmd/oamuser/user/userdel.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  22 /*        All Rights Reserved   */
  23
  24
  25 /*
  26  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <stdio.h>
  33 #include <ctype.h>
  34 #include <limits.h>
  35 #include <pwd.h>
  36 #include <project.h>
  37 #include <string.h>
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <userdefs.h>
  41 #include <stdlib.h>
  42 #include <errno.h>
  43 #include <unistd.h>
  44 #include <strings.h>
  45 #include "users.h"
  46 #include "messages.h"
  47 #include "funcs.h"
  48
  49 /*
  50  *  userdel [-r ] login
  51  *
  52  *      This command deletes user logins.  Arguments are:
  53  *
  54  *      -r - when given, this option removes home directory & its contents
  55  *
  56  *      login - a string of printable chars except colon (:)
  57  */
  58
  59 extern int check_perm(), isbusy(), get_default_zfs_flags();
  60 extern int rm_files(), call_passmgmt(), edit_group();
  61
  62 static char *logname;                   /* login name to delete */
  63 static char *nargv[20];         /* arguments for execvp of passmgmt */
  64
  65 char *cmdname;
  66
  67 int
  68 main(int argc, char **argv)
  69 {
  70         int ch, ret = 0, rflag = 0;
  71         int zfs_flags = 0, argindex, tries;
  72         struct passwd *pstruct;
  73         struct stat statbuf;
  74 #ifndef att
  75         FILE *pwf;              /* fille ptr for opened passwd file */
  76 #endif
  77         char *usertype = NULL;
  78         int rc;
  79
  80         cmdname = argv[0];
  81
  82         if (geteuid() != 0) {
  83                 errmsg(M_PERM_DENIED);
  84                 exit(EX_NO_PERM);
  85         }
  86
  87         opterr = 0;                     /* no print errors from getopt */
  88         usertype = getusertype(argv[0]);
  89
  90         while ((ch = getopt(argc, argv, "r")) != EOF) {
  91                 switch (ch) {
  92                         case 'r':
  93                                 rflag++;
  94                                 break;
  95                         case '?':
  96                                 if (is_role(usertype))
  97                                         errmsg(M_DRUSAGE);
  98                                 else
  99                                         errmsg(M_DUSAGE);
 100                                 exit(EX_SYNTAX);
 101                 }
 102         }
 103
 104         if (optind != argc - 1) {
 105                 if (is_role(usertype))
 106                         errmsg(M_DRUSAGE);
 107                 else
 108                         errmsg(M_DUSAGE);
 109                 exit(EX_SYNTAX);
 110         }
 111
 112         logname = argv[optind];
 113
 114 #ifdef att
 115         pstruct = getpwnam(logname);
 116 #else
 117         /*
 118          * Do this with fgetpwent to make sure we are only looking on local
 119          * system (since passmgmt only works on local system).
 120          */
 121         if ((pwf = fopen("/etc/passwd", "r")) == NULL) {
 122                 errmsg(M_OOPS, "open", "/etc/passwd");
 123                 exit(EX_FAILURE);
 124         }
 125         while ((pstruct = fgetpwent(pwf)) != NULL)
 126                 if (strcmp(pstruct->pw_name, logname) == 0)
 127                         break;
 128
 129         fclose(pwf);
 130 #endif
 131
 132         if (pstruct == NULL) {
 133                 errmsg(M_EXIST, logname);
 134                 exit(EX_NAME_NOT_EXIST);
 135         }
 136
 137         if (isbusy(logname)) {
 138                 errmsg(M_BUSY, logname, "remove");
 139                 exit(EX_BUSY);
 140         }
 141
 142         /* that's it for validations - now do the work */
 143         /* set up arguments to  passmgmt in nargv array */
 144         nargv[0] = PASSMGMT;
 145         nargv[1] = "-d";        /* delete */
 146         argindex = 2;           /* next argument */
 147
 148         /* finally - login name */
 149         nargv[argindex++] = logname;
 150
 151         /* set the last to null */
 152         nargv[argindex++] = NULL;
 153
 154         /* remove home directory */
 155         if (rflag) {
 156                 /* Check Permissions */
 157                 if (stat(pstruct->pw_dir, &statbuf)) {
 158                         errmsg(M_OOPS, "find status about home directory",
 159                             strerror(errno));
 160                         exit(EX_HOMEDIR);
 161                 }
 162
 163                 if (check_perm(statbuf, pstruct->pw_uid, pstruct->pw_gid,
 164                     S_IWOTH|S_IXOTH) != 0) {
 165                         errmsg(M_NO_PERM, logname, pstruct->pw_dir);
 166                         exit(EX_HOMEDIR);
 167                 }
 168                 zfs_flags = get_default_zfs_flags();
 169
 170                 if (rm_files(pstruct->pw_dir, logname, zfs_flags) != EX_SUCCESS)
 171                         exit(EX_HOMEDIR);
 172         }
 173
 174         /* now call passmgmt */
 175         ret = PEX_FAILED;
 176         for (tries = 3; ret != PEX_SUCCESS && tries--; ) {
 177                 switch (ret = call_passmgmt(nargv)) {
 178                 case PEX_SUCCESS:
 179                         ret = edit_group(logname, (char *)0, (int **)0, 1);
 180                         if (ret != EX_SUCCESS)
 181                                 errmsg(M_UPDATE, "deleted");
 182                         break;
 183
 184                 case PEX_BUSY:
 185                         break;
 186
 187                 case PEX_HOSED_FILES:
 188                         errmsg(M_HOSED_FILES);
 189                         exit(EX_INCONSISTENT);
 190                         break;
 191
 192                 case PEX_SYNTAX:
 193                 case PEX_BADARG:
 194                         /* should NEVER occur that passmgmt usage is wrong */
 195                         if (is_role(usertype))
 196                                 errmsg(M_DRUSAGE);
 197                         else
 198                                 errmsg(M_DUSAGE);
 199                         exit(EX_SYNTAX);
 200                         break;
 201
 202                 case PEX_BADUID:
 203                 /*
 204                  * uid is used - shouldn't happen but print message anyway
 205                  */
 206                         errmsg(M_UID_USED, pstruct->pw_uid);
 207                         exit(EX_ID_EXISTS);
 208                         break;
 209
 210                 case PEX_BADNAME:
 211                         /* invalid loname */
 212                         errmsg(M_USED, logname);
 213                         exit(EX_NAME_EXISTS);
 214                         break;
 215
 216                 default:
 217                         errmsg(M_UPDATE, "deleted");
 218                         exit(ret);
 219                         break;
 220                 }
 221         }
 222         if (tries == 0)
 223                 errmsg(M_UPDATE, "deleted");
 224
 225 /*
 226  * Now, remove this user from all project entries
 227  */
 228
 229         rc = edit_project(logname, (char *)0, (projid_t **)0, 1);
 230         if (rc != EX_SUCCESS) {
 231                 errmsg(M_UPDATE, "modified");
 232                 exit(rc);
 233         }
 234
 235         exit(ret);
 236         /*NOTREACHED*/
 237 }