source3/rpc_client/cli_winreg_int.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *
   4  *  WINREG internal client routines
   5  *
   6  *  Copyright (c) 2011      Andreas Schneider <asn@samba.org>
   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 3 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, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "include/registry.h"
  24 #include "utils/net_registry_util.h"
  25 #include "librpc/gen_ndr/ndr_winreg_c.h"
  26 #include "rpc_client/cli_winreg_int.h"
  27 #include "rpc_server/rpc_ncacn_np.h"
  28
  29 /**
  30  * Split path into hive name and subkeyname
  31  * normalizations performed:
  32  *  - if the path contains no '\\' characters,
  33  *    assume that the legacy format of using '/'
  34  *    as a separator is used and  convert '/' to '\\'
  35  *  - strip trailing '\\' chars
  36  */
  37 static WERROR _split_hive_key(TALLOC_CTX *mem_ctx,
  38                               const char *path,
  39                               char **hivename,
  40                               char **subkeyname)
  41 {
  42         char *p;
  43         const char *tmp_subkeyname;
  44
  45         if ((path == NULL) || (hivename == NULL) || (subkeyname == NULL)) {
  46                 return WERR_INVALID_PARAM;
  47         }
  48
  49         if (strlen(path) == 0) {
  50                 return WERR_INVALID_PARAM;
  51         }
  52
  53         if (strchr(path, '\\') == NULL) {
  54                 *hivename = talloc_string_sub(mem_ctx, path, "/", "\\");
  55         } else {
  56                 *hivename = talloc_strdup(mem_ctx, path);
  57         }
  58
  59         if (*hivename == NULL) {
  60                 return WERR_NOMEM;
  61         }
  62
  63         /* strip trailing '\\' chars */
  64         p = strrchr(*hivename, '\\');
  65         while ((p != NULL) && (p[1] == '\0')) {
  66                 *p = '\0';
  67                 p = strrchr(*hivename, '\\');
  68         }
  69
  70         p = strchr(*hivename, '\\');
  71
  72         if ((p == NULL) || (*p == '\0')) {
  73                 /* just the hive - no subkey given */
  74                 tmp_subkeyname = "";
  75         } else {
  76                 *p = '\0';
  77                 tmp_subkeyname = p+1;
  78         }
  79         *subkeyname = talloc_strdup(mem_ctx, tmp_subkeyname);
  80         if (*subkeyname == NULL) {
  81                 return WERR_NOMEM;
  82         }
  83
  84         return WERR_OK;
  85 }
  86
  87 static NTSTATUS _winreg_int_openkey(TALLOC_CTX *mem_ctx,
  88                                     const struct auth_serversupplied_info *session_info,
  89                                     struct messaging_context *msg_ctx,
  90                                     struct dcerpc_binding_handle **h,
  91                                     uint32_t reg_type,
  92                                     const char *key,
  93                                     bool create_key,
  94                                     uint32_t access_mask,
  95                                     struct policy_handle *hive_handle,
  96                                     struct policy_handle *key_handle,
  97                                     WERROR *pwerr)
  98 {
  99         static struct client_address client_id;
 100         struct dcerpc_binding_handle *binding_handle;
 101         struct winreg_String wkey, wkeyclass;
 102         NTSTATUS status;
 103         WERROR result = WERR_OK;
 104
 105         strlcpy(client_id.addr, "127.0.0.1", sizeof(client_id.addr));
 106         client_id.name = "127.0.0.1";
 107
 108         status = rpcint_binding_handle(mem_ctx,
 109                                        &ndr_table_winreg,
 110                                        &client_id,
 111                                        session_info,
 112                                        msg_ctx,
 113                                        &binding_handle);
 114         if (!NT_STATUS_IS_OK(status)) {
 115                 DEBUG(0, ("dcerpc_winreg_int_openkey: Could not connect to winreg pipe: %s\n",
 116                           nt_errstr(status)));
 117                 return status;
 118         }
 119
 120         switch (reg_type) {
 121         case HKEY_LOCAL_MACHINE:
 122                 status = dcerpc_winreg_OpenHKLM(binding_handle,
 123                                                 mem_ctx,
 124                                                 NULL,
 125                                                 access_mask,
 126                                                 hive_handle,
 127                                                 &result);
 128                 break;
 129         case HKEY_CLASSES_ROOT:
 130                 status = dcerpc_winreg_OpenHKCR(binding_handle,
 131                                                 mem_ctx,
 132                                                 NULL,
 133                                                 access_mask,
 134                                                 hive_handle,
 135                                                 &result);
 136                 break;
 137         case HKEY_USERS:
 138                 status = dcerpc_winreg_OpenHKU(binding_handle,
 139                                                mem_ctx,
 140                                                NULL,
 141                                                access_mask,
 142                                                hive_handle,
 143                                                &result);
 144                 break;
 145         case HKEY_CURRENT_USER:
 146                 status = dcerpc_winreg_OpenHKCU(binding_handle,
 147                                                 mem_ctx,
 148                                                 NULL,
 149                                                 access_mask,
 150                                                 hive_handle,
 151                                                 &result);
 152                 break;
 153         case HKEY_PERFORMANCE_DATA:
 154                 status = dcerpc_winreg_OpenHKPD(binding_handle,
 155                                                 mem_ctx,
 156                                                 NULL,
 157                                                 access_mask,
 158                                                 hive_handle,
 159                                                 &result);
 160                 break;
 161         default:
 162                 result = WERR_INVALID_PARAMETER;
 163                 status = NT_STATUS_OK;
 164         }
 165         if (!NT_STATUS_IS_OK(status)) {
 166                 talloc_free(binding_handle);
 167                 return status;
 168         }
 169         if (!W_ERROR_IS_OK(result)) {
 170                 talloc_free(binding_handle);
 171                 *pwerr = result;
 172                 return status;
 173         }
 174
 175         ZERO_STRUCT(wkey);
 176         wkey.name = key;
 177
 178         if (create_key) {
 179                 enum winreg_CreateAction action = REG_ACTION_NONE;
 180
 181                 ZERO_STRUCT(wkeyclass);
 182                 wkeyclass.name = "";
 183
 184                 status = dcerpc_winreg_CreateKey(binding_handle,
 185                                                  mem_ctx,
 186                                                  hive_handle,
 187                                                  wkey,
 188                                                  wkeyclass,
 189                                                  0,
 190                                                  access_mask,
 191                                                  NULL,
 192                                                  key_handle,
 193                                                  &action,
 194                                                  &result);
 195                 switch (action) {
 196                         case REG_ACTION_NONE:
 197                                 DEBUG(8, ("dcerpc_winreg_int_openkey: createkey"
 198                                           " did nothing -- huh?\n"));
 199                                 break;
 200                         case REG_CREATED_NEW_KEY:
 201                                 DEBUG(8, ("dcerpc_winreg_int_openkey: createkey"
 202                                           " created %s\n", key));
 203                                 break;
 204                         case REG_OPENED_EXISTING_KEY:
 205                                 DEBUG(8, ("dcerpc_winreg_int_openkey: createkey"
 206                                           " opened existing %s\n", key));
 207                                 break;
 208                 }
 209         } else {
 210                 status = dcerpc_winreg_OpenKey(binding_handle,
 211                                                mem_ctx,
 212                                                hive_handle,
 213                                                wkey,
 214                                                0,
 215                                                access_mask,
 216                                                key_handle,
 217                                                &result);
 218         }
 219         if (!NT_STATUS_IS_OK(status)) {
 220                 talloc_free(binding_handle);
 221                 return status;
 222         }
 223         if (!W_ERROR_IS_OK(result)) {
 224                 talloc_free(binding_handle);
 225                 *pwerr = result;
 226                 return status;
 227         }
 228
 229         *h = binding_handle;
 230
 231         return status;
 232 }
 233
 234 NTSTATUS dcerpc_winreg_int_openkey(TALLOC_CTX *mem_ctx,
 235                                    const struct auth_serversupplied_info *server_info,
 236                                    struct messaging_context *msg_ctx,
 237                                    struct dcerpc_binding_handle **h,
 238                                    const char *key,
 239                                    bool create_key,
 240                                    uint32_t access_mask,
 241                                    struct policy_handle *hive_handle,
 242                                    struct policy_handle *key_handle,
 243                                    WERROR *pwerr)
 244 {
 245         char *hivename = NULL;
 246         char *subkey = NULL;
 247         uint32_t reg_type;
 248         WERROR result;
 249
 250         result = _split_hive_key(mem_ctx, key, &hivename, &subkey);
 251         if (!W_ERROR_IS_OK(result)) {
 252                 *pwerr = result;
 253                 return NT_STATUS_OK;
 254         }
 255
 256         if (strequal(hivename, "HKLM") ||
 257             strequal(hivename, "HKEY_LOCAL_MACHINE")) {
 258                 reg_type = HKEY_LOCAL_MACHINE;
 259         } else if (strequal(hivename, "HKCR") ||
 260                    strequal(hivename, "HKEY_CLASSES_ROOT")) {
 261                 reg_type = HKEY_CLASSES_ROOT;
 262         } else if (strequal(hivename, "HKU") ||
 263                    strequal(hivename, "HKEY_USERS")) {
 264                 reg_type = HKEY_USERS;
 265         } else if (strequal(hivename, "HKCU") ||
 266                    strequal(hivename, "HKEY_CURRENT_USER")) {
 267                 reg_type = HKEY_CURRENT_USER;
 268         } else if (strequal(hivename, "HKPD") ||
 269                    strequal(hivename, "HKEY_PERFORMANCE_DATA")) {
 270                 reg_type = HKEY_PERFORMANCE_DATA;
 271         } else {
 272                 DEBUG(10,("dcerpc_winreg_int_openkey: unrecognised hive key %s\n",
 273                           key));
 274                 *pwerr = WERR_INVALID_PARAMETER;
 275                 return NT_STATUS_OK;
 276         }
 277
 278         return _winreg_int_openkey(mem_ctx,
 279                                    server_info,
 280                                    msg_ctx,
 281                                    h,
 282                                    reg_type,
 283                                    key,
 284                                    create_key,
 285                                    access_mask,
 286                                    hive_handle,
 287                                    key_handle,
 288                                    pwerr);
 289 }
 290
 291 NTSTATUS dcerpc_winreg_int_hklm_openkey(TALLOC_CTX *mem_ctx,
 292                                         const struct auth_serversupplied_info *server_info,
 293                                         struct messaging_context *msg_ctx,
 294                                         struct dcerpc_binding_handle **h,
 295                                         const char *key,
 296                                         bool create_key,
 297                                         uint32_t access_mask,
 298                                         struct policy_handle *hive_handle,
 299                                         struct policy_handle *key_handle,
 300                                         WERROR *pwerr)
 301 {
 302         return _winreg_int_openkey(mem_ctx,
 303                                    server_info,
 304                                    msg_ctx,
 305                                    h,
 306                                    HKEY_LOCAL_MACHINE,
 307                                    key,
 308                                    create_key,
 309                                    access_mask,
 310                                    hive_handle,
 311                                    key_handle,
 312                                    pwerr);
 313 }
 314
 315 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */