source3/libgpo/gpo_fetch.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Object Support
   4  *  Copyright (C) Guenther Deschner 2005-2006
   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 3 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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21
  22 /****************************************************************
  23  explode the GPO CIFS URI into their components
  24 ****************************************************************/
  25
  26 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
  27                                  const char *file_sys_path,
  28                                  char **server,
  29                                  char **service,
  30                                  char **nt_path,
  31                                  char **unix_path)
  32 {
  33         fstring tok;
  34         char *path = NULL;
  35
  36         *server = NULL;
  37         *service = NULL;
  38         *nt_path = NULL;
  39         *unix_path = NULL;
  40
  41         if (!file_sys_path) {
  42                 return NT_STATUS_OK;
  43         }
  44
  45         if (!next_token(&file_sys_path, tok, "\\", sizeof(tok))) {
  46                 return NT_STATUS_INVALID_PARAMETER;
  47         }
  48
  49         if ((*server = talloc_strdup(mem_ctx, tok)) == NULL) {
  50                 return NT_STATUS_NO_MEMORY;
  51         }
  52
  53         if (!next_token(&file_sys_path, tok, "\\", sizeof(tok))) {
  54                 return NT_STATUS_INVALID_PARAMETER;
  55         }
  56
  57         if ((*service = talloc_strdup(mem_ctx, tok)) == NULL) {
  58                 return NT_STATUS_NO_MEMORY;
  59         }
  60
  61         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
  62                 == NULL) {
  63                 return NT_STATUS_NO_MEMORY;
  64         }
  65
  66         if ((path = talloc_asprintf(mem_ctx,
  67                                         "%s/%s",
  68                                         lock_path(GPO_CACHE_DIR),
  69                                         file_sys_path)) == NULL) {
  70                 return NT_STATUS_NO_MEMORY;
  71         }
  72         path = talloc_string_sub(mem_ctx, path, "\\", "/");
  73         if (!path) {
  74                 return NT_STATUS_NO_MEMORY;
  75         }
  76
  77         if ((*unix_path = talloc_strdup(mem_ctx, path)) == NULL) {
  78                 return NT_STATUS_NO_MEMORY;
  79         }
  80
  81         TALLOC_FREE(path);
  82         return NT_STATUS_OK;
  83 }
  84
  85 /****************************************************************
  86  prepare the local disc storage for "unix_path"
  87 ****************************************************************/
  88
  89 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
  90                                         const char *unix_path)
  91 {
  92         const char *top_dir = lock_path(GPO_CACHE_DIR);
  93         char *current_dir;
  94         fstring tok;
  95
  96         current_dir = talloc_strdup(mem_ctx, top_dir);
  97         NT_STATUS_HAVE_NO_MEMORY(current_dir);
  98
  99         if ((mkdir(top_dir, 0644)) < 0 && errno != EEXIST) {
 100                 return NT_STATUS_ACCESS_DENIED;
 101         }
 102
 103         while (next_token(&unix_path, tok, "/", sizeof(tok))) {
 104
 105                 if (strequal(tok, GPO_CACHE_DIR)) {
 106                         break;
 107                 }
 108         }
 109
 110         while (next_token(&unix_path, tok, "/", sizeof(tok))) {
 111
 112                 current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
 113                 NT_STATUS_HAVE_NO_MEMORY(current_dir);
 114
 115                 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
 116                         return NT_STATUS_ACCESS_DENIED;
 117                 }
 118         }
 119
 120         return NT_STATUS_OK;
 121 }
 122
 123 /****************************************************************
 124  download a full GPO via CIFS
 125 ****************************************************************/
 126
 127 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
 128                          struct cli_state *cli,
 129                          struct GROUP_POLICY_OBJECT *gpo)
 130 {
 131         NTSTATUS result;
 132         char *server, *service, *nt_path, *unix_path;
 133         char *nt_ini_path, *unix_ini_path;
 134
 135         result = gpo_explode_filesyspath(mem_ctx, gpo->file_sys_path,
 136                                          &server, &service, &nt_path,
 137                                          &unix_path);
 138         if (!NT_STATUS_IS_OK(result)) {
 139                 goto out;
 140         }
 141
 142         result = gpo_prepare_local_store(mem_ctx, unix_path);
 143         if (!NT_STATUS_IS_OK(result)) {
 144                 goto out;
 145         }
 146
 147         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 148         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
 149         if (!unix_path || !nt_ini_path) {
 150                 result = NT_STATUS_NO_MEMORY;
 151                 goto out;
 152         }
 153
 154         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
 155         if (!NT_STATUS_IS_OK(result)) {
 156                 goto out;
 157         }
 158
 159         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
 160         if (!NT_STATUS_IS_OK(result)) {
 161                 goto out;
 162         }
 163
 164         result = NT_STATUS_OK;
 165
 166  out:
 167         return result;
 168 }
 169
 170 /****************************************************************
 171  get the locally stored gpt.ini version number
 172 ****************************************************************/
 173
 174 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
 175                                     const char *unix_path,
 176                                     uint32_t *sysvol_version,
 177                                     char **display_name)
 178 {
 179         NTSTATUS status;
 180         uint32_t version = 0;
 181         char *local_path = NULL;
 182         char *name = NULL;
 183
 184         if (!unix_path) {
 185                 return NT_STATUS_OK;
 186         }
 187
 188         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 189         NT_STATUS_HAVE_NO_MEMORY(local_path);
 190
 191         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
 192         if (!NT_STATUS_IS_OK(status)) {
 193                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
 194                         "failed to parse ini [%s]: %s\n",
 195                         local_path, nt_errstr(status)));
 196                 return status;
 197         }
 198
 199         if (sysvol_version) {
 200                 *sysvol_version = version;
 201         }
 202
 203         if (name && *display_name) {
 204                 *display_name = talloc_strdup(mem_ctx, name);
 205                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
 206         }
 207
 208         return NT_STATUS_OK;
 209 }