source/libsmb/clisecdesc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client security descriptor functions
   4    Copyright (C) Andrew Tridgell 2000
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22
  23 /****************************************************************************
  24   query the security descriptor for a open file
  25  ****************************************************************************/
  26 SEC_DESC *cli_query_secdesc(struct cli_state *cli, int fnum,
  27                             TALLOC_CTX *mem_ctx)
  28 {
  29         char param[8];
  30         char *rparam=NULL, *rdata=NULL;
  31         unsigned int rparam_count=0, rdata_count=0;
  32         prs_struct pd;
  33         BOOL pd_initialized = False;
  34         SEC_DESC *psd = NULL;
  35
  36         SIVAL(param, 0, fnum);
  37         SIVAL(param, 4, 0x7);
  38
  39         if (!cli_send_nt_trans(cli,
  40                                NT_TRANSACT_QUERY_SECURITY_DESC,
  41                                0,
  42                                NULL, 0, 0,
  43                                param, 8, 4,
  44                                NULL, 0, 0x10000)) {
  45                 DEBUG(1,("Failed to send NT_TRANSACT_QUERY_SECURITY_DESC\n"));
  46                 goto cleanup;
  47         }
  48
  49
  50         if (!cli_receive_nt_trans(cli,
  51                                   &rparam, &rparam_count,
  52                                   &rdata, &rdata_count)) {
  53                 DEBUG(1,("Failed to recv NT_TRANSACT_QUERY_SECURITY_DESC\n"));
  54                 goto cleanup;
  55         }
  56
  57         if (cli_is_error(cli))
  58                 goto cleanup;
  59
  60         if (!prs_init(&pd, rdata_count, mem_ctx, UNMARSHALL)) {
  61                 goto cleanup;
  62         }
  63         pd_initialized = True;
  64         prs_copy_data_in(&pd, rdata, rdata_count);
  65         prs_set_offset(&pd,0);
  66
  67         if (!sec_io_desc("sd data", &psd, &pd, 1)) {
  68                 DEBUG(1,("Failed to parse secdesc\n"));
  69                 goto cleanup;
  70         }
  71
  72  cleanup:
  73
  74         SAFE_FREE(rparam);
  75         SAFE_FREE(rdata);
  76
  77         if (pd_initialized)
  78                 prs_mem_free(&pd);
  79         return psd;
  80 }
  81
  82 /****************************************************************************
  83   set the security descriptor for a open file
  84  ****************************************************************************/
  85 BOOL cli_set_secdesc(struct cli_state *cli, int fnum, SEC_DESC *sd)
  86 {
  87         char param[8];
  88         char *rparam=NULL, *rdata=NULL;
  89         unsigned int rparam_count=0, rdata_count=0;
  90         uint32 sec_info = 0;
  91         TALLOC_CTX *mem_ctx;
  92         prs_struct pd;
  93         BOOL ret = False;
  94
  95         if ((mem_ctx = talloc_init("cli_set_secdesc")) == NULL) {
  96                 DEBUG(0,("talloc_init failed.\n"));
  97                 goto cleanup;
  98         }
  99
 100         prs_init(&pd, 0, mem_ctx, MARSHALL);
 101         prs_give_memory(&pd, NULL, 0, True);
 102
 103         if (!sec_io_desc("sd data", &sd, &pd, 1)) {
 104                 DEBUG(1,("Failed to marshall secdesc\n"));
 105                 goto cleanup;
 106         }
 107
 108         SIVAL(param, 0, fnum);
 109
 110         if (sd->off_dacl)
 111                 sec_info |= DACL_SECURITY_INFORMATION;
 112         if (sd->off_owner_sid)
 113                 sec_info |= OWNER_SECURITY_INFORMATION;
 114         if (sd->off_grp_sid)
 115                 sec_info |= GROUP_SECURITY_INFORMATION;
 116         SSVAL(param, 4, sec_info);
 117
 118         if (!cli_send_nt_trans(cli,
 119                                NT_TRANSACT_SET_SECURITY_DESC,
 120                                0,
 121                                NULL, 0, 0,
 122                                param, 8, 0,
 123                                prs_data_p(&pd), prs_offset(&pd), 0)) {
 124                 DEBUG(1,("Failed to send NT_TRANSACT_SET_SECURITY_DESC\n"));
 125                 goto cleanup;
 126         }
 127
 128
 129         if (!cli_receive_nt_trans(cli,
 130                                   &rparam, &rparam_count,
 131                                   &rdata, &rdata_count)) {
 132                 DEBUG(1,("NT_TRANSACT_SET_SECURITY_DESC failed\n"));
 133                 goto cleanup;
 134         }
 135
 136         ret = True;
 137
 138   cleanup:
 139
 140         SAFE_FREE(rparam);
 141         SAFE_FREE(rdata);
 142
 143         talloc_destroy(mem_ctx);
 144
 145         prs_mem_free(&pd);
 146         return ret;
 147 }