source4/utils/getntacl.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Get NT ACLs from UNIX files.
   5
   6    Copyright (C) Tim Potter <tpot@samba.org> 2004
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "system/filesys.h"
  25
  26 #if (defined(HAVE_NO_ACLS) || !defined(HAVE_XATTR_SUPPORT))
  27
  28 int main(int argc, char **argv)
  29 {
  30         printf("ACL support not compiled in.");
  31         return 1;
  32 }
  33
  34 #else
  35
  36 /* Display a security descriptor in "psec" format which is as follows.
  37
  38    The first two lines describe the owner user and owner group of the
  39    object.  If either of these lines are blank then the respective
  40    owner property is not set.  The remaining lines list the individual
  41    permissions or ACE entries, one per line.  Each column describes a
  42    different property of the ACE:
  43
  44        Column    Description
  45        -------------------------------------------------------------------
  46          1       ACE type (allow/deny etc)
  47          2       ACE flags
  48          3       ACE mask
  49          4       SID the ACE applies to
  50
  51    Example:
  52
  53        S-1-5-21-1067277791-1719175008-3000797951-500
  54
  55        1 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-501
  56        1 2 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-501
  57        0 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-500
  58        0 2 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-500
  59        0 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-513
  60        0 2 0x00020000 S-1-5-21-1067277791-1719175008-3000797951-513
  61        0 2 0xe0000000 S-1-1-0
  62 */
  63
  64 static void print_psec(TALLOC_CTX *mem_ctx, struct security_descriptor *sd)
  65 {
  66         if (sd->owner_sid)
  67                 printf("%s\n", dom_sid_string(mem_ctx, sd->owner_sid));
  68         else
  69                 printf("\n");
  70
  71         if (sd->group_sid)
  72                 printf("%s\n", dom_sid_string(mem_ctx, sd->owner_sid));
  73         else
  74                 printf("\n");
  75
  76         /* Note: SACL not displayed */
  77
  78         if (sd->dacl) {
  79                 int i;
  80
  81                 for (i = 0; i < sd->dacl->num_aces; i++) {
  82                         struct security_ace *ace = &sd->dacl->aces[i];
  83
  84                         printf("%d %d 0x%08x %s\n", ace->type, ace->flags,
  85                                ace->access_mask,
  86                                dom_sid_string(mem_ctx, &ace->trustee));
  87                 }
  88
  89         }
  90 }
  91
  92 int main(int argc, char **argv)
  93 {
  94         TALLOC_CTX *mem_ctx;
  95         ssize_t size;
  96         char *data;
  97         struct security_descriptor sd;
  98         DATA_BLOB blob;
  99         struct ndr_pull *ndr;
 100         NTSTATUS result;
 101
 102         static_init_getntacl;
 103
 104         mem_ctx = talloc_init("getntacl");
 105
 106         /* Fetch ACL data */
 107
 108         size = getxattr(argv[1], "security.ntacl", NULL, 0);
 109
 110         if (size == -1) {
 111                 fprintf(stderr, "%s: %s\n", argv[1], strerror(errno));
 112                 exit(1);
 113         }
 114
 115         data = talloc_size(mem_ctx, size);
 116
 117         size = getxattr(argv[1], "security.ntacl", data, size);
 118
 119         blob = data_blob_talloc(mem_ctx, data, size);
 120
 121         ndr = ndr_pull_init_blob(&blob, mem_ctx);
 122
 123         result = ndr_pull_security_descriptor(
 124                 ndr, NDR_SCALARS|NDR_BUFFERS, &sd);
 125
 126         print_psec(data, &sd);
 127         return 0;
 128 }
 129
 130 #endif /* HAVE_NO_ACLS */