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