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 #include "system/filesys.h"
  22 #include "../libgpo/gpo.h"
  23
  24 /****************************************************************
  25  explode the GPO CIFS URI into their components
  26 ****************************************************************/
  27
  28 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
  29                                  const char *cache_path,
  30                                  const char *file_sys_path,
  31                                  char **server,
  32                                  char **service,
  33                                  char **nt_path,
  34                                  char **unix_path)
  35 {
  36         char *path = NULL;
  37
  38         *server = NULL;
  39         *service = NULL;
  40         *nt_path = NULL;
  41         *unix_path = NULL;
  42
  43         if (!file_sys_path) {
  44                 return NT_STATUS_OK;
  45         }
  46
  47         if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
  48                 return NT_STATUS_INVALID_PARAMETER;
  49         }
  50         NT_STATUS_HAVE_NO_MEMORY(*server);
  51
  52         if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
  53                 return NT_STATUS_INVALID_PARAMETER;
  54         }
  55         NT_STATUS_HAVE_NO_MEMORY(*service);
  56
  57         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
  58                 == NULL) {
  59                 return NT_STATUS_NO_MEMORY;
  60         }
  61         NT_STATUS_HAVE_NO_MEMORY(*nt_path);
  62
  63         if ((path = talloc_asprintf(mem_ctx,
  64                                         "%s/%s",
  65                                         cache_path,
  66                                         file_sys_path)) == NULL) {
  67                 return NT_STATUS_NO_MEMORY;
  68         }
  69 #if _SAMBA_BUILD_ == 4
  70         path = string_sub_talloc(mem_ctx, path, "\\", "/");
  71 #else
  72         path = talloc_string_sub(mem_ctx, path, "\\", "/");
  73 #endif
  74         if (!path) {
  75                 return NT_STATUS_NO_MEMORY;
  76         }
  77
  78         *unix_path = talloc_strdup(mem_ctx, path);
  79         NT_STATUS_HAVE_NO_MEMORY(*unix_path);
  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 *cache_path,
  91                                         const char *unix_path)
  92 {
  93         char *current_dir;
  94         char *tok;
  95
  96         current_dir = talloc_strdup(mem_ctx, cache_path);
  97         NT_STATUS_HAVE_NO_MEMORY(current_dir);
  98
  99         if ((mkdir(cache_path, 0644)) < 0 && errno != EEXIST) {
 100                 return NT_STATUS_ACCESS_DENIED;
 101         }
 102
 103         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
 104                 if (strequal(tok, GPO_CACHE_DIR)) {
 105                         break;
 106                 }
 107         }
 108
 109         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
 110                 current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
 111                 NT_STATUS_HAVE_NO_MEMORY(current_dir);
 112
 113                 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
 114                         return NT_STATUS_ACCESS_DENIED;
 115                 }
 116         }
 117
 118         return NT_STATUS_OK;
 119 }
 120
 121 /****************************************************************
 122  download a full GPO via CIFS
 123 ****************************************************************/
 124
 125 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
 126                          const char *cache_path,
 127                          struct cli_state *cli,
 128                          struct GROUP_POLICY_OBJECT *gpo)
 129 {
 130         NTSTATUS result;
 131         char *server, *service, *nt_path, *unix_path;
 132         char *nt_ini_path, *unix_ini_path;
 133
 134         result = gpo_explode_filesyspath(mem_ctx, cache_path, gpo->file_sys_path,
 135                                          &server, &service, &nt_path,
 136                                          &unix_path);
 137         NT_STATUS_NOT_OK_RETURN(result);
 138
 139         result = gpo_prepare_local_store(mem_ctx, cache_path, unix_path);
 140         NT_STATUS_NOT_OK_RETURN(result);
 141
 142         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 143         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
 144         NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
 145         NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
 146
 147         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
 148         NT_STATUS_NOT_OK_RETURN(result);
 149
 150         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
 151         NT_STATUS_NOT_OK_RETURN(result);
 152
 153         return NT_STATUS_OK;
 154 }
 155
 156 /****************************************************************
 157  get the locally stored gpt.ini version number
 158 ****************************************************************/
 159
 160 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
 161                                     const char *unix_path,
 162                                     uint32_t *sysvol_version,
 163                                     char **display_name)
 164 {
 165         NTSTATUS status;
 166         uint32_t version = 0;
 167         char *local_path = NULL;
 168         char *name = NULL;
 169
 170         if (!unix_path) {
 171                 return NT_STATUS_OK;
 172         }
 173
 174         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 175         NT_STATUS_HAVE_NO_MEMORY(local_path);
 176
 177         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
 178         if (!NT_STATUS_IS_OK(status)) {
 179                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
 180                         "failed to parse ini [%s]: %s\n",
 181                         local_path, nt_errstr(status)));
 182                 return status;
 183         }
 184
 185         if (sysvol_version) {
 186                 *sysvol_version = version;
 187         }
 188
 189         if (name && *display_name) {
 190                 *display_name = talloc_strdup(mem_ctx, name);
 191                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
 192         }
 193
 194         return NT_STATUS_OK;
 195 }