usr/src/cmd/getent/dogetpw.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
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include <stdio.h>
  28 #include <pwd.h>
  29 #include <stdlib.h>
  30 #include <errno.h>
  31 #include "getent.h"
  32
  33 /*
  34  * getpwnam - get entries from password database
  35  */
  36 int
  37 dogetpw(const char **list)
  38 {
  39         struct passwd *pwp;
  40         int rc = EXC_SUCCESS;
  41         char *ptr;
  42         uid_t uid;
  43
  44
  45         if (list == NULL || *list == NULL) {
  46                 while ((pwp = getpwent()) != NULL)
  47                         (void) putpwent(pwp, stdout);
  48         } else {
  49                 for (; *list != NULL; list++) {
  50                         errno = 0;
  51
  52                         /*
  53                          * Here we assume that the argument passed is
  54                          * a uid, if it can be completely transformed
  55                          * to a long integer. So we check for uid in
  56                          * the database and if we fail then we check
  57                          * for the user name.
  58                          * If the argument passed is not numeric, then
  59                          * we take it as the user name and proceed.
  60                          */
  61                         uid = strtoul(*list, &ptr, 10);
  62                         if (!(*ptr == '\0' && errno == 0) ||
  63                             ((pwp = getpwuid(uid)) == NULL)) {
  64                                 pwp = getpwnam(*list);
  65                         }
  66
  67                         if (pwp == NULL)
  68                                 rc = EXC_NAME_NOT_FOUND;
  69                         else
  70                                 (void) putpwent(pwp, stdout);
  71                 }
  72         }
  73
  74         return (rc);
  75 }