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 int edit_project();
  62 extern struct passwd *fgetpwent(FILE *);
  63
  64 static char *logname;                   /* login name to delete */
  65 static char *nargv[20];         /* arguments for execvp of passmgmt */
  66
  67 char *cmdname;
  68
  69 int
  70 main(int argc, char **argv)
  71 {
  72         int ch, ret = 0, rflag = 0;
  73         int zfs_flags = 0, argindex, tries;
  74         struct passwd *pstruct;
  75         struct stat statbuf;
  76 #ifndef att
  77         FILE *pwf;              /* fille ptr for opened passwd file */
  78 #endif
  79         char *usertype = NULL;
  80         int rc;
  81
  82         cmdname = argv[0];
  83
  84         if (geteuid() != 0) {
  85                 errmsg(M_PERM_DENIED);
  86                 exit(EX_NO_PERM);
  87         }
  88
  89         opterr = 0;                     /* no print errors from getopt */
  90         usertype = getusertype(argv[0]);
  91
  92         while ((ch = getopt(argc, argv, "r")) != EOF) {
  93                 switch (ch) {
  94                         case 'r':
  95                                 rflag++;
  96                                 break;
  97                         case '?':
  98                                 if (is_role(usertype))
  99                                         errmsg(M_DRUSAGE);
 100                                 else
 101                                         errmsg(M_DUSAGE);
 102                                 exit(EX_SYNTAX);
 103                 }
 104         }
 105
 106         if (optind != argc - 1) {
 107                 if (is_role(usertype))
 108                         errmsg(M_DRUSAGE);
 109                 else
 110                         errmsg(M_DUSAGE);
 111                 exit(EX_SYNTAX);
 112         }
 113
 114         logname = argv[optind];
 115
 116 #ifdef att
 117         pstruct = getpwnam(logname);
 118 #else
 119         /*
 120          * Do this with fgetpwent to make sure we are only looking on local
 121          * system (since passmgmt only works on local system).
 122          */
 123         if ((pwf = fopen("/etc/passwd", "r")) == NULL) {
 124                 errmsg(M_OOPS, "open", "/etc/passwd");
 125                 exit(EX_FAILURE);
 126         }
 127         while ((pstruct = fgetpwent(pwf)) != NULL)
 128                 if (strcmp(pstruct->pw_name, logname) == 0)
 129                         break;
 130
 131         fclose(pwf);
 132 #endif
 133
 134         if (pstruct == NULL) {
 135                 errmsg(M_EXIST, logname);
 136                 exit(EX_NAME_NOT_EXIST);
 137         }
 138
 139         if (isbusy(logname)) {
 140                 errmsg(M_BUSY, logname, "remove");
 141                 exit(EX_BUSY);
 142         }
 143
 144         /* that's it for validations - now do the work */
 145         /* set up arguments to  passmgmt in nargv array */
 146         nargv[0] = PASSMGMT;
 147         nargv[1] = "-d";        /* delete */
 148         argindex = 2;           /* next argument */
 149
 150         /* finally - login name */
 151         nargv[argindex++] = logname;
 152
 153         /* set the last to null */
 154         nargv[argindex++] = NULL;
 155
 156         /* remove home directory */
 157         if (rflag) {
 158                 /* Check Permissions */
 159                 if (stat(pstruct->pw_dir, &statbuf)) {
 160                         errmsg(M_OOPS, "find status about home directory",
 161                             strerror(errno));
 162                         exit(EX_HOMEDIR);
 163                 }
 164
 165                 if (check_perm(statbuf, pstruct->pw_uid, pstruct->pw_gid,
 166                     S_IWOTH|S_IXOTH) != 0) {
 167                         errmsg(M_NO_PERM, logname, pstruct->pw_dir);
 168                         exit(EX_HOMEDIR);
 169                 }
 170                 zfs_flags = get_default_zfs_flags();
 171
 172                 if (rm_files(pstruct->pw_dir, logname, zfs_flags) != EX_SUCCESS)
 173                         exit(EX_HOMEDIR);
 174         }
 175
 176         /* now call passmgmt */
 177         ret = PEX_FAILED;
 178         for (tries = 3; ret != PEX_SUCCESS && tries--; ) {
 179                 switch (ret = call_passmgmt(nargv)) {
 180                 case PEX_SUCCESS:
 181                         ret = edit_group(logname, (char *)0, (int **)0, 1);
 182                         if (ret != EX_SUCCESS)
 183                                 errmsg(M_UPDATE, "deleted");
 184                         break;
 185
 186                 case PEX_BUSY:
 187                         break;
 188
 189                 case PEX_HOSED_FILES:
 190                         errmsg(M_HOSED_FILES);
 191                         exit(EX_INCONSISTENT);
 192                         break;
 193
 194                 case PEX_SYNTAX:
 195                 case PEX_BADARG:
 196                         /* should NEVER occur that passmgmt usage is wrong */
 197                         if (is_role(usertype))
 198                                 errmsg(M_DRUSAGE);
 199                         else
 200                                 errmsg(M_DUSAGE);
 201                         exit(EX_SYNTAX);
 202                         break;
 203
 204                 case PEX_BADUID:
 205                 /*
 206                  * uid is used - shouldn't happen but print message anyway
 207                  */
 208                         errmsg(M_UID_USED, pstruct->pw_uid);
 209                         exit(EX_ID_EXISTS);
 210                         break;
 211
 212                 case PEX_BADNAME:
 213                         /* invalid loname */
 214                         errmsg(M_USED, logname);
 215                         exit(EX_NAME_EXISTS);
 216                         break;
 217
 218                 default:
 219                         errmsg(M_UPDATE, "deleted");
 220                         exit(ret);
 221                         break;
 222                 }
 223         }
 224         if (tries == 0)
 225                 errmsg(M_UPDATE, "deleted");
 226
 227 /*
 228  * Now, remove this user from all project entries
 229  */
 230
 231         rc = edit_project(logname, (char *)0, (projid_t **)0, 1);
 232         if (rc != EX_SUCCESS) {
 233                 errmsg(M_UPDATE, "modified");
 234                 exit(rc);
 235         }
 236
 237         exit(ret);
 238         /*NOTREACHED*/
 239 }