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 extern struct passwd *fgetpwent(FILE *);
  62
  63 static char *logname;                   /* login name to delete */
  64 static char *nargv[20];         /* arguments for execvp of passmgmt */
  65
  66 char *cmdname;
  67
  68 int
  69 main(int argc, char **argv)
  70 {
  71         int ch, ret = 0, rflag = 0;
  72         int zfs_flags = 0, argindex, tries;
  73         struct passwd *pstruct;
  74         struct stat statbuf;
  75 #ifndef att
  76         FILE *pwf;              /* fille ptr for opened passwd file */
  77 #endif
  78         char *usertype = NULL;
  79         int rc;
  80
  81         cmdname = argv[0];
  82
  83         if (geteuid() != 0) {
  84                 errmsg(M_PERM_DENIED);
  85                 exit(EX_NO_PERM);
  86         }
  87
  88         opterr = 0;                     /* no print errors from getopt */
  89         usertype = getusertype(argv[0]);
  90
  91         while ((ch = getopt(argc, argv, "r")) != EOF) {
  92                 switch (ch) {
  93                         case 'r':
  94                                 rflag++;
  95                                 break;
  96                         case '?':
  97                                 if (is_role(usertype))
  98                                         errmsg(M_DRUSAGE);
  99                                 else
 100                                         errmsg(M_DUSAGE);
 101                                 exit(EX_SYNTAX);
 102                 }
 103         }
 104
 105         if (optind != argc - 1) {
 106                 if (is_role(usertype))
 107                         errmsg(M_DRUSAGE);
 108                 else
 109                         errmsg(M_DUSAGE);
 110                 exit(EX_SYNTAX);
 111         }
 112
 113         logname = argv[optind];
 114
 115 #ifdef att
 116         pstruct = getpwnam(logname);
 117 #else
 118         /*
 119          * Do this with fgetpwent to make sure we are only looking on local
 120          * system (since passmgmt only works on local system).
 121          */
 122         if ((pwf = fopen("/etc/passwd", "r")) == NULL) {
 123                 errmsg(M_OOPS, "open", "/etc/passwd");
 124                 exit(EX_FAILURE);
 125         }
 126         while ((pstruct = fgetpwent(pwf)) != NULL)
 127                 if (strcmp(pstruct->pw_name, logname) == 0)
 128                         break;
 129
 130         fclose(pwf);
 131 #endif
 132
 133         if (pstruct == NULL) {
 134                 errmsg(M_EXIST, logname);
 135                 exit(EX_NAME_NOT_EXIST);
 136         }
 137
 138         if (isbusy(logname)) {
 139                 errmsg(M_BUSY, logname, "remove");
 140                 exit(EX_BUSY);
 141         }
 142
 143         /* that's it for validations - now do the work */
 144         /* set up arguments to  passmgmt in nargv array */
 145         nargv[0] = PASSMGMT;
 146         nargv[1] = "-d";        /* delete */
 147         argindex = 2;           /* next argument */
 148
 149         /* finally - login name */
 150         nargv[argindex++] = logname;
 151
 152         /* set the last to null */
 153         nargv[argindex++] = NULL;
 154
 155         /* remove home directory */
 156         if (rflag) {
 157                 /* Check Permissions */
 158                 if (stat(pstruct->pw_dir, &statbuf)) {
 159                         errmsg(M_OOPS, "find status about home directory",
 160                             strerror(errno));
 161                         exit(EX_HOMEDIR);
 162                 }
 163
 164                 if (check_perm(statbuf, pstruct->pw_uid, pstruct->pw_gid,
 165                     S_IWOTH|S_IXOTH) != 0) {
 166                         errmsg(M_NO_PERM, logname, pstruct->pw_dir);
 167                         exit(EX_HOMEDIR);
 168                 }
 169                 zfs_flags = get_default_zfs_flags();
 170
 171                 if (rm_files(pstruct->pw_dir, logname, zfs_flags) != EX_SUCCESS)
 172                         exit(EX_HOMEDIR);
 173         }
 174
 175         /* now call passmgmt */
 176         ret = PEX_FAILED;
 177         for (tries = 3; ret != PEX_SUCCESS && tries--; ) {
 178                 switch (ret = call_passmgmt(nargv)) {
 179                 case PEX_SUCCESS:
 180                         ret = edit_group(logname, (char *)0, (int **)0, 1);
 181                         if (ret != EX_SUCCESS)
 182                                 errmsg(M_UPDATE, "deleted");
 183                         break;
 184
 185                 case PEX_BUSY:
 186                         break;
 187
 188                 case PEX_HOSED_FILES:
 189                         errmsg(M_HOSED_FILES);
 190                         exit(EX_INCONSISTENT);
 191                         break;
 192
 193                 case PEX_SYNTAX:
 194                 case PEX_BADARG:
 195                         /* should NEVER occur that passmgmt usage is wrong */
 196                         if (is_role(usertype))
 197                                 errmsg(M_DRUSAGE);
 198                         else
 199                                 errmsg(M_DUSAGE);
 200                         exit(EX_SYNTAX);
 201                         break;
 202
 203                 case PEX_BADUID:
 204                 /*
 205                  * uid is used - shouldn't happen but print message anyway
 206                  */
 207                         errmsg(M_UID_USED, pstruct->pw_uid);
 208                         exit(EX_ID_EXISTS);
 209                         break;
 210
 211                 case PEX_BADNAME:
 212                         /* invalid loname */
 213                         errmsg(M_USED, logname);
 214                         exit(EX_NAME_EXISTS);
 215                         break;
 216
 217                 default:
 218                         errmsg(M_UPDATE, "deleted");
 219                         exit(ret);
 220                         break;
 221                 }
 222         }
 223         if (tries == 0)
 224                 errmsg(M_UPDATE, "deleted");
 225
 226 /*
 227  * Now, remove this user from all project entries
 228  */
 229
 230         rc = edit_project(logname, (char *)0, (projid_t **)0, 1);
 231         if (rc != EX_SUCCESS) {
 232                 errmsg(M_UPDATE, "modified");
 233                 exit(rc);
 234         }
 235
 236         exit(ret);
 237         /*NOTREACHED*/
 238 }