source/libsmb/clisecdesc.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    client security descriptor functions
   5    Copyright (C) Andrew Tridgell 2000
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #define NO_SYSLOG
  23
  24 #include "includes.h"
  25
  26
  27
  28 /****************************************************************************
  29   query the security descriptor for a open file
  30   ****************************************************************************/
  31 SEC_DESC *cli_query_secdesc(struct cli_state *cli,int fd)
  32 {
  33         char param[8];
  34         char *rparam=NULL, *rdata=NULL;
  35         int rparam_count=0, rdata_count=0;
  36         TALLOC_CTX *mem_ctx;
  37         prs_struct pd;
  38         SEC_DESC *psd = NULL;
  39         SEC_DESC *ret;
  40
  41         SIVAL(param, 0, fd);
  42         SSVAL(param, 4, 0xf);
  43
  44         if (!cli_send_nt_trans(cli,
  45                                NT_TRANSACT_QUERY_SECURITY_DESC,
  46                                0,
  47                                NULL, 0, 0,
  48                                param, 8, 4,
  49                                NULL, 0, 0x10000)) {
  50                 DEBUG(1,("Failed to send NT_TRANSACT_QUERY_SECURITY_DESC\n"));
  51                 return NULL;
  52         }
  53
  54
  55         if (!cli_receive_nt_trans(cli,
  56                                   &rparam, &rparam_count,
  57                                   &rdata, &rdata_count)) {
  58                 DEBUG(1,("Failed to recv NT_TRANSACT_QUERY_SECURITY_DESC\n"));
  59                 return NULL;
  60         }
  61
  62         if ((mem_ctx = talloc_init()) == NULL) {
  63                 DEBUG(0,("talloc_init failed.\n"));
  64                 return NULL;
  65         }
  66
  67         prs_init(&pd, rdata_count, 4, mem_ctx, UNMARSHALL);
  68         prs_append_data(&pd, rdata, rdata_count);
  69         pd.data_offset = 0;
  70
  71         if (!sec_io_desc("sd data", &psd, &pd, 1)) {
  72                 DEBUG(1,("Failed to parse secdesc\n"));
  73                 talloc_destroy(mem_ctx);
  74                 return NULL;
  75         }
  76
  77         ret = dup_sec_desc(psd);
  78         talloc_destroy(mem_ctx);
  79         return ret;
  80 }
  81
  82
  83
  84
  85 /****************************************************************************
  86   set the security descriptor for a open file
  87   ****************************************************************************/
  88 BOOL cli_set_secdesc(struct cli_state *cli,int fd, SEC_DESC *sd)
  89 {
  90         char param[8];
  91         char *rparam=NULL, *rdata=NULL;
  92         int rparam_count=0, rdata_count=0;
  93         TALLOC_CTX *mem_ctx;
  94         prs_struct pd;
  95
  96         if ((mem_ctx = talloc_init()) == NULL) {
  97                 DEBUG(0,("talloc_init failed.\n"));
  98                 return False;
  99         }
 100
 101         prs_init(&pd, 0, 4, mem_ctx, MARSHALL);
 102         prs_give_memory(&pd, NULL, 0, True);
 103
 104         if (!sec_io_desc("sd data", &sd, &pd, 1)) {
 105                 DEBUG(1,("Failed to marshall secdesc\n"));
 106                 return False;
 107         }
 108
 109         SIVAL(param, 0, fd);
 110         SSVAL(param, 4, 0xf);
 111
 112         if (!cli_send_nt_trans(cli,
 113                                NT_TRANSACT_SET_SECURITY_DESC,
 114                                0,
 115                                NULL, 0, 0,
 116                                param, 8, 0,
 117                                pd.data_p, pd.data_offset, 0)) {
 118                 DEBUG(1,("Failed to send NT_TRANSACT_SET_SECURITY_DESC\n"));
 119                 return False;
 120         }
 121
 122
 123         if (!cli_receive_nt_trans(cli,
 124                                   &rparam, &rparam_count,
 125                                   &rdata, &rdata_count)) {
 126                 DEBUG(1,("NT_TRANSACT_SET_SECURITY_DESC failed\n"));
 127                 return False;
 128         }
 129
 130         if (rparam) free(rparam);
 131         if (rdata) free(rdata);
 132
 133         talloc_destroy(mem_ctx);
 134
 135         return True;
 136 }
 137