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