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