source/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, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "includes.h"
  22
  23 /****************************************************************
  24  explode the GPO CIFS URI into their components
  25 ****************************************************************/
  26
  27 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
  28                                  const char *file_sys_path,
  29                                  char **server,
  30                                  char **service,
  31                                  char **nt_path,
  32                                  char **unix_path)
  33 {
  34         fstring tok;
  35         pstring path;
  36
  37         *server = NULL;
  38         *service = NULL;
  39         *nt_path = NULL;
  40         *unix_path = NULL;
  41
  42         if (!file_sys_path) {
  43                 return NT_STATUS_OK;
  44         }
  45
  46         if (!next_token(&file_sys_path, tok, "\\", sizeof(tok))) {
  47                 return NT_STATUS_INVALID_PARAMETER;
  48         }
  49
  50         if ((*server = talloc_strdup(mem_ctx, tok)) == NULL) {
  51                 return NT_STATUS_NO_MEMORY;
  52         }
  53
  54         if (!next_token(&file_sys_path, tok, "\\", sizeof(tok))) {
  55                 return NT_STATUS_INVALID_PARAMETER;
  56         }
  57
  58         if ((*service = talloc_strdup(mem_ctx, tok)) == NULL) {
  59                 return NT_STATUS_NO_MEMORY;
  60         }
  61
  62         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path)) == NULL) {
  63                 return NT_STATUS_NO_MEMORY;
  64         }
  65
  66         pstrcpy(path, lock_path(GPO_CACHE_DIR));
  67         pstrcat(path, "/");
  68         pstrcat(path, file_sys_path);
  69         pstring_sub(path, "\\", "/");
  70
  71         if ((*unix_path = talloc_strdup(mem_ctx, path)) == NULL) {
  72                 return NT_STATUS_NO_MEMORY;
  73         }
  74
  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         fstring 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(&unix_path, tok, "/", sizeof(tok))) {
  97
  98                 if (strequal(tok, GPO_CACHE_DIR)) {
  99                         break;
 100                 }
 101         }
 102
 103         while (next_token(&unix_path, tok, "/", sizeof(tok))) {
 104
 105                 current_dir = talloc_asprintf_append(current_dir, "/%s", tok);
 106                 NT_STATUS_HAVE_NO_MEMORY(current_dir);
 107
 108                 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
 109                         return NT_STATUS_ACCESS_DENIED;
 110                 }
 111         }
 112
 113         return NT_STATUS_OK;
 114 }
 115
 116 /****************************************************************
 117  download a full GPO via CIFS
 118 ****************************************************************/
 119
 120 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
 121                          struct cli_state *cli,
 122                          struct GROUP_POLICY_OBJECT *gpo)
 123 {
 124         NTSTATUS result;
 125         char *server, *service, *nt_path, *unix_path, *nt_ini_path, *unix_ini_path;
 126
 127         result = gpo_explode_filesyspath(mem_ctx, gpo->file_sys_path,
 128                                          &server, &service, &nt_path, &unix_path);
 129         if (!NT_STATUS_IS_OK(result)) {
 130                 goto out;
 131         }
 132
 133         result = gpo_prepare_local_store(mem_ctx, unix_path);
 134         if (!NT_STATUS_IS_OK(result)) {
 135                 goto out;
 136         }
 137
 138         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 139         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
 140         if (!unix_path || !nt_ini_path) {
 141                 result = NT_STATUS_NO_MEMORY;
 142                 goto out;
 143         }
 144
 145         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
 146         if (!NT_STATUS_IS_OK(result)) {
 147                 goto out;
 148         }
 149
 150         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
 151         if (!NT_STATUS_IS_OK(result)) {
 152                 goto out;
 153         }
 154
 155         result = NT_STATUS_OK;
 156
 157  out:
 158         return result;
 159 }
 160
 161 /****************************************************************
 162  get the locally stored gpt.ini version number
 163 ****************************************************************/
 164
 165 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
 166                                     const char *unix_path,
 167                                     uint32 *sysvol_version,
 168                                     char **display_name)
 169 {
 170         NTSTATUS status;
 171         uint32 version = 0;
 172         char *local_path = NULL;
 173         char *name = NULL;
 174
 175         if (!unix_path) {
 176                 return NT_STATUS_OK;
 177         }
 178
 179         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 180         NT_STATUS_HAVE_NO_MEMORY(local_path);
 181
 182         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
 183         if (!NT_STATUS_IS_OK(status)) {
 184                 DEBUG(10,("gpo_get_sysvol_gpt_version: failed to parse ini [%s]: %s\n",
 185                         unix_path, nt_errstr(status)));
 186                 return status;
 187         }
 188
 189         if (sysvol_version) {
 190                 *sysvol_version = version;
 191         }
 192
 193         if (name && *display_name) {
 194                 *display_name = talloc_strdup(mem_ctx, name);
 195                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
 196         }
 197
 198         return NT_STATUS_OK;
 199 }