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 #include "../libgpo/gpo_ini.h"
  24
  25 #if _SAMBA_BUILD_ == 4
  26 #include "param/param.h"
  27 #include "libcli/resolve/resolve.h"
  28 #include <tevent.h>
  29 #include "libcli/libcli.h"
  30 #include "libcli/raw/libcliraw.h"
  31 #include "libcli/libcli_proto.h"
  32 #include "libgpo/ads_convenience.h"
  33 #include "libgpo/gpo_s4.h"
  34 #include "lib/util/util.h"
  35 #else
  36 #include "libgpo/gpo_proto.h"
  37 #endif
  38
  39 /****************************************************************
  40  explode the GPO CIFS URI into their components
  41 ****************************************************************/
  42
  43 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
  44                                  const char *cache_dir,
  45                                  const char *file_sys_path,
  46                                  char **server,
  47                                  char **service,
  48                                  char **nt_path,
  49                                  char **unix_path)
  50 {
  51         char *path = NULL;
  52
  53         *server = NULL;
  54         *service = NULL;
  55         *nt_path = NULL;
  56         *unix_path = NULL;
  57
  58         if (!file_sys_path) {
  59                 return NT_STATUS_OK;
  60         }
  61
  62         if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
  63                 return NT_STATUS_INVALID_PARAMETER;
  64         }
  65         NT_STATUS_HAVE_NO_MEMORY(*server);
  66
  67         if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
  68                 return NT_STATUS_INVALID_PARAMETER;
  69         }
  70         NT_STATUS_HAVE_NO_MEMORY(*service);
  71
  72         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
  73                 == NULL) {
  74                 return NT_STATUS_NO_MEMORY;
  75         }
  76         NT_STATUS_HAVE_NO_MEMORY(*nt_path);
  77
  78         if ((path = talloc_asprintf(mem_ctx,
  79                                         "%s/%s",
  80                                         cache_dir,
  81                                         file_sys_path)) == NULL) {
  82                 return NT_STATUS_NO_MEMORY;
  83         }
  84 #if _SAMBA_BUILD_ == 4
  85         path = string_sub_talloc(mem_ctx, path, "\\", "/");
  86 #else
  87         path = talloc_string_sub(mem_ctx, path, "\\", "/");
  88 #endif
  89         if (!path) {
  90                 return NT_STATUS_NO_MEMORY;
  91         }
  92
  93         *unix_path = talloc_strdup(mem_ctx, path);
  94         NT_STATUS_HAVE_NO_MEMORY(*unix_path);
  95
  96         talloc_free(path);
  97         return NT_STATUS_OK;
  98 }
  99
 100 /****************************************************************
 101  prepare the local disc storage for "unix_path"
 102 ****************************************************************/
 103
 104 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
 105                                         const char *cache_dir,
 106                                         const char *unix_path)
 107 {
 108         char *current_dir;
 109         char *tok;
 110
 111         current_dir = talloc_strdup(mem_ctx, cache_dir);
 112         NT_STATUS_HAVE_NO_MEMORY(current_dir);
 113
 114         if ((mkdir(cache_dir, 0644)) < 0 && errno != EEXIST) {
 115                 return NT_STATUS_ACCESS_DENIED;
 116         }
 117
 118         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
 119                 if (strequal(tok, GPO_CACHE_DIR)) {
 120                         break;
 121                 }
 122         }
 123
 124         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
 125                 current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
 126                 NT_STATUS_HAVE_NO_MEMORY(current_dir);
 127
 128                 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
 129                         return NT_STATUS_ACCESS_DENIED;
 130                 }
 131         }
 132
 133         return NT_STATUS_OK;
 134 }
 135
 136 static NTSTATUS gpo_connect_server(ADS_STRUCT *ads, struct loadparm_context *lp_ctx,
 137                                    const char *server, const char *service, void *ret_cli)
 138 {
 139         NTSTATUS result;
 140 #if _SAMBA_BUILD_ == 3
 141         struct cli_state *cli;
 142
 143
 144         result = cli_full_connection(&cli,
 145                         global_myname(),
 146                         server,
 147                         NULL, 0,
 148                         service, "A:",
 149                         ads->auth.user_name, NULL,
 150                         ads->auth.password,
 151                         CLI_FULL_CONNECTION_USE_KERBEROS |
 152                         CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS,
 153                         Undefined, NULL);
 154         if (!NT_STATUS_IS_OK(result)) {
 155                 DEBUG(10,("check_refresh_gpo: "
 156                                 "failed to connect: %s\n",
 157                                 nt_errstr(result)));
 158                 return result;
 159         }
 160         *(struct cli_state **) ret_cli = cli;
 161 #else
 162         struct smbcli_state *cli = NULL;
 163         struct smbcli_options options;
 164         struct smbcli_session_options session_options;
 165
 166         lp_smbcli_options(lp_ctx, &options);
 167         lp_smbcli_session_options(lp_ctx, &session_options);
 168
 169         result = smbcli_full_connection(NULL, &cli,
 170                         server,
 171                         NULL, service,
 172                         NULL /*devtype*/, NULL /* socket options */,
 173                         ads->credentials,
 174                         lp_resolve_context(lp_ctx),
 175                         tevent_context_init(ads),
 176                         &options,
 177                         &session_options,
 178                         lp_iconv_convenience(lp_ctx),
 179                         lp_gensec_settings(ads, lp_ctx));
 180         if (!NT_STATUS_IS_OK(result)) {
 181                 DEBUG(10,("failed to connect: %s\n",
 182                                 nt_errstr(result)));
 183                 return result;
 184         }
 185         *(struct smbcli_state **) ret_cli = cli;
 186 #endif
 187         return NT_STATUS_OK;
 188 }
 189
 190 /****************************************************************
 191  download a full GPO via CIFS
 192 ****************************************************************/
 193
 194 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
 195                          ADS_STRUCT *ads,
 196                          struct loadparm_context *lp_ctx,
 197                          const char *cache_dir,
 198                          struct GROUP_POLICY_OBJECT *gpo)
 199 {
 200         NTSTATUS result;
 201         char *server, *service, *nt_path, *unix_path;
 202         char *nt_ini_path, *unix_ini_path;
 203 #if _SAMBA_BUILD_ == 3
 204         struct cli_state *cli;
 205 #else
 206         struct smbcli_state *cli;
 207 #endif
 208
 209
 210         result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
 211                                          &server, &service, &nt_path,
 212                                          &unix_path);
 213         NT_STATUS_NOT_OK_RETURN(result);
 214
 215
 216         result = gpo_connect_server(ads, lp_ctx, server, service, &cli);
 217         NT_STATUS_NOT_OK_RETURN(result);
 218
 219
 220         result = gpo_prepare_local_store(mem_ctx, cache_dir, unix_path);
 221         NT_STATUS_NOT_OK_RETURN(result);
 222
 223         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 224         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
 225         NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
 226         NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
 227
 228         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
 229         NT_STATUS_NOT_OK_RETURN(result);
 230
 231         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
 232         NT_STATUS_NOT_OK_RETURN(result);
 233
 234         return NT_STATUS_OK;
 235 }
 236
 237 /****************************************************************
 238  get the locally stored gpt.ini version number
 239 ****************************************************************/
 240
 241 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
 242                                     const char *unix_path,
 243                                     uint32_t *sysvol_version,
 244                                     char **display_name)
 245 {
 246         NTSTATUS status;
 247         uint32_t version = 0;
 248         char *local_path = NULL;
 249         char *name = NULL;
 250
 251         if (!unix_path) {
 252                 return NT_STATUS_OK;
 253         }
 254
 255         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
 256         NT_STATUS_HAVE_NO_MEMORY(local_path);
 257
 258         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
 259         if (!NT_STATUS_IS_OK(status)) {
 260                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
 261                         "failed to parse ini [%s]: %s\n",
 262                         local_path, nt_errstr(status)));
 263                 return status;
 264         }
 265
 266         if (sysvol_version) {
 267                 *sysvol_version = version;
 268         }
 269
 270         if (name && *display_name) {
 271                 *display_name = talloc_strdup(mem_ctx, name);
 272                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
 273         }
 274
 275         return NT_STATUS_OK;
 276 }