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 *file_sys_path,
  30                                  char **server,
  31                                  char **service,
  32                                  char **nt_path,
  33                                  char **unix_path)
  34 {
  35         char *path = NULL;
  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_talloc(mem_ctx, &file_sys_path, server, "\\")) {
  47                 return NT_STATUS_INVALID_PARAMETER;
  48         }
  49         NT_STATUS_HAVE_NO_MEMORY(*server);
  50
  51         if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
  52                 return NT_STATUS_INVALID_PARAMETER;
  53         }
  54         NT_STATUS_HAVE_NO_MEMORY(*service);
  55
  56         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
  57                 == NULL) {
  58                 return NT_STATUS_NO_MEMORY;
  59         }
  60         NT_STATUS_HAVE_NO_MEMORY(*nt_path);
  61
  62         if ((path = talloc_asprintf(mem_ctx,
  63                                         "%s/%s",
  64                                         cache_path(GPO_CACHE_DIR),
  65                                         file_sys_path)) == NULL) {
  66                 return NT_STATUS_NO_MEMORY;
  67         }
  68         path = talloc_string_sub(mem_ctx, path, "\\", "/");
  69         if (!path) {
  70                 return NT_STATUS_NO_MEMORY;
  71         }
  72
  73         *unix_path = talloc_strdup(mem_ctx, path);
  74         NT_STATUS_HAVE_NO_MEMORY(*unix_path);
  75
  76         talloc_free(path);
  77         return NT_STATUS_OK;
  78 }
  79
  80 /****************************************************************
  81  prepare the local disc storage for "unix_path"
  82 ****************************************************************/
  83
  84 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
  85                                         const char *unix_path)
  86 {
  87         const char *top_dir = cache_path(GPO_CACHE_DIR);
  88         char *current_dir;
  89         char *tok;
  90
  91         current_dir = talloc_strdup(mem_ctx, top_dir);
  92         NT_STATUS_HAVE_NO_MEMORY(current_dir);
  93
  94         if ((mkdir(top_dir, 0644)) < 0 && errno != EEXIST) {
  95                 return NT_STATUS_ACCESS_DENIED;
  96         }
  97
  98         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
  99                 if (strequal(tok, GPO_CACHE_DIR)) {
 100                         break;
 101                 }
 102         }
 103
 104         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
 105                 current_dir = talloc_asprintf_append_buffer(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;
 126         char *nt_ini_path, *unix_ini_path;
 127
 128         result = gpo_explode_filesyspath(mem_ctx, gpo->file_sys_path,
 129                                          &server, &service, &nt_path,
 130                                          &unix_path);
 131         NT_STATUS_NOT_OK_RETURN(result);
 132
 133         result = gpo_prepare_local_store(mem_ctx, unix_path);
 134         NT_STATUS_NOT_OK_RETURN(result);
 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         NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
 139         NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
 140
 141         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
 142         NT_STATUS_NOT_OK_RETURN(result);
 143
 144         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
 145         NT_STATUS_NOT_OK_RETURN(result);
 146
 147         return NT_STATUS_OK;
 148 }
 149
 150 /****************************************************************
 151  get the locally stored gpt.ini version number
 152 ****************************************************************/
 153
 154 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
 155                                     const char *unix_path,
 156                                     uint32_t *sysvol_version,
 157                                     char **display_name)
 158 {
 159         NTSTATUS status;
 160         uint32_t version = 0;
 161         char *local_path = NULL;
 162         char *name = NULL;
 163
 164         if (!unix_path) {
 165                 return NT_STATUS_OK;
 166         }
 167
 168         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 169         NT_STATUS_HAVE_NO_MEMORY(local_path);
 170
 171         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
 172         if (!NT_STATUS_IS_OK(status)) {
 173                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
 174                         "failed to parse ini [%s]: %s\n",
 175                         local_path, nt_errstr(status)));
 176                 return status;
 177         }
 178
 179         if (sysvol_version) {
 180                 *sysvol_version = version;
 181         }
 182
 183         if (name && *display_name) {
 184                 *display_name = talloc_strdup(mem_ctx, name);
 185                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
 186         }
 187
 188         return NT_STATUS_OK;
 189 }