usr/src/cmd/oamuser/user/proj.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include <sys/types.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <ctype.h>
  33 #include <sys/stat.h>
  34 #include <project.h>
  35 #include <unistd.h>
  36 #include <userdefs.h>
  37 #include <errno.h>
  38 #include <nss_dbdefs.h>
  39 #include "users.h"
  40 #include "messages.h"
  41
  42 int
  43 edit_project(char *login, char *new_login, projid_t projids[], int overwrite)
  44 {
  45         char **memptr;
  46         char t_name[] = "/etc/projtmp.XXXXXX";
  47         FILE *e_fptr, *t_fptr;
  48         struct project *p_ptr;
  49         struct project p_work;
  50         char workbuf[NSS_LINELEN_PROJECT];
  51         int i, modified = 0;
  52         struct stat sbuf;
  53         int p_length;
  54         char p_string[NSS_LINELEN_PROJECT];
  55         long p_curr = 0;
  56         int exist;
  57         int fd;
  58
  59         if ((e_fptr = fopen(PROJF_PATH, "r")) == NULL) {
  60                 return (EX_UPDATE);
  61         }
  62
  63         if (fstat(fileno(e_fptr), &sbuf) != 0)
  64                 return (EX_UPDATE);
  65
  66         if ((fd = mkstemp(t_name)) < 0) {
  67                 return (EX_UPDATE);
  68         }
  69
  70         if ((t_fptr = fdopen(fd, "w+")) == NULL) {
  71                 (void) close(fd);
  72                 (void) unlink(t_name);
  73                 return (EX_UPDATE);
  74         }
  75
  76         /*
  77          * Get ownership and permissions correct
  78          */
  79
  80         if (fchmod(fd, sbuf.st_mode) != 0 ||
  81             fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) {
  82                 (void) fclose(t_fptr);
  83                 (void) unlink(t_name);
  84                 return (EX_UPDATE);
  85         }
  86
  87         p_curr = ftell(e_fptr);
  88
  89         /* Make TMP file look like we want project file to look */
  90
  91         while (fgets(p_string, NSS_LINELEN_PROJECT - 1, e_fptr)) {
  92                 /* While there is another group string */
  93
  94                 p_length = strlen(p_string);
  95                 (void) fseek(e_fptr, p_curr, SEEK_SET);
  96                 p_ptr = fgetprojent(e_fptr, &p_work, &workbuf,
  97                     sizeof (workbuf));
  98                 p_curr = ftell(e_fptr);
  99
 100                 if (p_ptr == NULL) {
 101                         /*
 102                          * tried to parse a proj string over
 103                          * NSS_LINELEN_PROJECT chars
 104                          */
 105                         errmsg(M_PROJ_ENTRY_OVF, NSS_LINELEN_PROJECT);
 106                         modified = 0; /* bad project file: cannot rebuild */
 107                         break;
 108                 }
 109
 110                 /* first delete the login from the project, if it's there */
 111                 if (overwrite || !projids) {
 112                         if (p_ptr->pj_users != NULL) {
 113                                 for (memptr = p_ptr->pj_users; *memptr;
 114                                     memptr++) {
 115                                         if (strcmp(*memptr, login) == 0) {
 116                                                 /* Delete this one */
 117                                                 char **from = memptr + 1;
 118                                                 p_length -= (strlen(*memptr)+1);
 119                                                 do {
 120                                                         *(from - 1) = *from;
 121                                                 } while (*from++);
 122
 123                                                 modified++;
 124                                                 break;
 125                                         }
 126                                 }
 127                         }
 128                 }
 129
 130                 /* now check to see if project is one to add to */
 131                 if (projids) {
 132                         for (i = 0; projids[i] != -1; i++) {
 133                                 if (p_ptr->pj_projid == projids[i]) {
 134                                         /* Scan for dups */
 135                                         exist = 0;
 136                                         for (memptr = p_ptr->pj_users; *memptr;
 137                                             memptr++) {
 138                                                 if (strncmp(*memptr, new_login ?
 139                                                     new_login : login,
 140                                                     strlen(*memptr)) == 0)
 141                                                         exist++;
 142                                         }
 143                                         p_length += strlen(new_login ?
 144                                             new_login : login) + 1;
 145
 146                                         if (p_length >=
 147                                             NSS_LINELEN_PROJECT - 1) {
 148                                                 errmsg(M_PROJ_ENTRY_OVF,
 149                                                     NSS_LINELEN_PROJECT);
 150                                                 break;
 151                                         } else {
 152                                                 if (!exist) {
 153                                                 *memptr++ = new_login ?
 154                                                     new_login : login;
 155                                                 *memptr = NULL;
 156                                                 modified++;
 157                                                 }
 158                                         }
 159                                 }
 160                         }
 161                 }
 162                 putprojent(p_ptr, t_fptr);
 163         }
 164
 165         (void) fclose(e_fptr);
 166         (void) fclose(t_fptr);
 167
 168         /* Now, update project file, if it was modified */
 169         if (modified && rename(t_name, PROJF_PATH) < 0) {
 170                 (void) unlink(t_name);
 171                 return (EX_UPDATE);
 172         }
 173
 174         (void) unlink(t_name);
 175         return (EX_SUCCESS);
 176 }