source3/libgpo/gpext/security.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Group Policy Support
   4  *  Copyright (C) Guenther Deschner 2005-2008
   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 "libgpo/gpo_ini.h"
  22
  23 #define GP_EXT_NAME "security"
  24
  25 #define GPTTMPL_UNIX_PATH  "Microsoft/Windows NT/SecEdit/GptTmpl.inf"
  26
  27 #define GPTTMPL_SECTION_UNICODE                 "Unicode"
  28 #define GPTTMPL_SECTION_VERSION                 "Version"
  29
  30 #define GPTTMPL_SECTION_REGISTRY_VALUES         "Registry Values"
  31 #define GPTTMPL_SECTION_SYSTEM_ACCESS           "System Access"
  32 #define GPTTMPL_SECTION_KERBEROS_POLICY         "Kerberos Policy"
  33 #define GPTTMPL_SECTION_EVENT_AUDIT             "Event Audit"
  34 #define GPTTMPL_SECTION_PRIVILEGE_RIGHTS        "Privilege Rights"
  35 #define GPTTMPL_SECTION_APPLICATION_LOG         "Application Log"
  36 #define GPTTMPL_SECTION_SECURITY_LOG            "Security Log"
  37 #define GPTTMPL_SECTION_SYSTEM_LOG              "System Log"
  38 #define GPTTMPL_SECTION_GROUP_MEMBERSHIP        "Group Membership"
  39 #define GPTTMPL_SECTION_FILE_SECURITY           "File Security"
  40 #define GPTTMPL_SECTION_SERVICE_GENERAL_SETTING "Service General Setting"
  41
  42 static TALLOC_CTX *ctx = NULL;
  43
  44 struct gpttmpl_table {
  45         const char *section;
  46         const char *parameter;
  47         enum winreg_Type type;
  48 };
  49
  50 /****************************************************************
  51  parse the Version section from gpttmpl file
  52 ****************************************************************/
  53
  54 #define GPTTMPL_PARAMETER_REVISION "Revision"
  55 #define GPTTMPL_PARAMETER_SIGNATURE "signature"
  56 #define GPTTMPL_VALUE_CHICAGO "$CHICAGO$" /* whatever this is good for... */
  57 #define GPTTMPL_PARAMETER_UNICODE "Unicode"
  58
  59 static NTSTATUS gpttmpl_parse_header(struct gp_inifile_context *ini_ctx,
  60                                      uint32_t *version_out)
  61 {
  62         const char *signature = NULL;
  63         NTSTATUS result;
  64         uint32_t version;
  65         int is_unicode;
  66
  67         if (!ini_ctx) {
  68                 return NT_STATUS_INVALID_PARAMETER;
  69         }
  70
  71         result = gp_inifile_getstring(ini_ctx, GPTTMPL_SECTION_VERSION
  72                         ":"GPTTMPL_PARAMETER_SIGNATURE, &signature);
  73         if (!NT_STATUS_IS_OK(result)) {
  74                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  75         }
  76
  77         if (!strequal(signature, GPTTMPL_VALUE_CHICAGO)) {
  78                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  79         }
  80         result = gp_inifile_getint(ini_ctx, GPTTMPL_SECTION_VERSION
  81                         ":"GPTTMPL_PARAMETER_REVISION, &version);
  82         if (!NT_STATUS_IS_OK(result))
  83                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  84         }
  85
  86         if (version_out) {
  87                 *version_out = version;
  88         }
  89
  90         result = gp_inifile_getint(ini_ctx, GPTTMPL_SECTION_UNICODE
  91                         ":"GPTTMPL_PARAMETER_UNICODE, is_unicode);
  92         if (!NT_STATUS_IS_OK(result) || !is_unicode) {
  93                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  94         }
  95
  96         return NT_STATUS_OK;
  97 }
  98
  99 /****************************************************************
 100 ****************************************************************/
 101
 102 static NTSTATUS gpttmpl_init_context(TALLOC_CTX *mem_ctx,
 103                                      uint32_t flags,
 104                                      const char *unix_path,
 105                                      struct gp_inifile_context **ini_ctx)
 106 {
 107         NTSTATUS status;
 108         uint32_t version;
 109         struct gp_inifile_context *tmp_ctx = NULL;
 110
 111         status = gp_inifile_init_context(mem_ctx, flags, unix_path,
 112                                          GPTTMPL_UNIX_PATH, &tmp_ctx);
 113         NT_STATUS_NOT_OK_RETURN(status);
 114
 115         status = gpttmpl_parse_header(tmp_ctx, &version);
 116         if (!NT_STATUS_IS_OK(status)) {
 117                 DEBUG(1,("gpttmpl_init_context: failed: %s\n",
 118                         nt_errstr(status)));
 119                 TALLOC_FREE(tmp_ctx);
 120                 return status;
 121         }
 122
 123         *ini_ctx = tmp_ctx;
 124
 125         return NT_STATUS_OK;
 126 }
 127
 128 /****************************************************************
 129 ****************************************************************/
 130
 131 static NTSTATUS gpttmpl_process(struct gp_inifile_context *ini_ctx,
 132                                 struct registry_key *root_key,
 133                                 uint32_t flags)
 134 {
 135         return NT_STATUS_OK;
 136 }
 137
 138 /****************************************************************
 139 ****************************************************************/
 140
 141 static NTSTATUS security_process_group_policy(ADS_STRUCT *ads,
 142                                               TALLOC_CTX *mem_ctx,
 143                                               uint32_t flags,
 144                                               struct registry_key *root_key,
 145                                               const struct nt_user_token *token,
 146                                               struct GROUP_POLICY_OBJECT *gpo,
 147                                               const char *extension_guid,
 148                                               const char *snapin_guid)
 149 {
 150         NTSTATUS status;
 151         char *unix_path = NULL;
 152         struct gp_inifile_context *ini_ctx = NULL;
 153
 154         debug_gpext_header(0, "security_process_group_policy", flags, gpo,
 155                            extension_guid, snapin_guid);
 156
 157         /* this handler processes the gpttmpl files and merge output to the
 158          * registry */
 159
 160         status = gpo_get_unix_path(mem_ctx, gpo, &unix_path);
 161         if (!NT_STATUS_IS_OK(status)) {
 162                 goto out;
 163         }
 164
 165         status = gpttmpl_init_context(mem_ctx, flags, unix_path, &ini_ctx);
 166         if (!NT_STATUS_IS_OK(status)) {
 167                 goto out;
 168         }
 169
 170         status = gpttmpl_process(ini_ctx, root_key, flags);
 171         if (!NT_STATUS_IS_OK(status)) {
 172                 goto out;
 173         }
 174
 175  out:
 176         if (!NT_STATUS_IS_OK(status)) {
 177                 DEBUG(0,("security_process_group_policy: %s\n",
 178                         nt_errstr(status)));
 179         }
 180         TALLOC_FREE(ini_ctx);
 181
 182         return status;
 183 }
 184
 185 /****************************************************************
 186 ****************************************************************/
 187
 188 static NTSTATUS security_get_reg_config(TALLOC_CTX *mem_ctx,
 189                                         struct gp_extension_reg_info **reg_info)
 190 {
 191         NTSTATUS status;
 192         struct gp_extension_reg_info *info = NULL;
 193
 194         struct gp_extension_reg_table table[] = {
 195                 /* FIXME: how can we store the "(Default)" value ??? */
 196                 /* { "", REG_SZ, "Security" }, */
 197                 { "ProcessGroupPolicy", REG_SZ, "security_process_group_policy" },
 198                 { "NoUserPolicy", REG_DWORD, "1" },
 199                 { "ExtensionDebugLevel", REG_DWORD, "1" },
 200                 { NULL, REG_NONE, NULL }
 201         };
 202
 203         info = TALLOC_ZERO_P(mem_ctx, struct gp_extension_reg_info);
 204         NT_STATUS_HAVE_NO_MEMORY(info);
 205
 206         status = gp_ext_info_add_entry(mem_ctx, GP_EXT_NAME,
 207                                        GP_EXT_GUID_SECURITY,
 208                                        table, info);
 209         NT_STATUS_NOT_OK_RETURN(status);
 210
 211         *reg_info = info;
 212
 213         return NT_STATUS_OK;
 214 }
 215
 216
 217 /****************************************************************
 218 ****************************************************************/
 219
 220 static NTSTATUS security_initialize(TALLOC_CTX *mem_ctx)
 221 {
 222         return NT_STATUS_OK;
 223 }
 224
 225 /****************************************************************
 226 ****************************************************************/
 227
 228 static NTSTATUS security_shutdown(void)
 229 {
 230         NTSTATUS status;
 231
 232         status = unregister_gp_extension(GP_EXT_NAME);
 233         if (NT_STATUS_IS_OK(status)) {
 234                 return status;
 235         }
 236
 237         TALLOC_FREE(ctx);
 238
 239         return NT_STATUS_OK;
 240 }
 241
 242 /****************************************************************
 243 ****************************************************************/
 244
 245 static struct gp_extension_methods security_methods = {
 246         .initialize             = security_initialize,
 247         .process_group_policy   = security_process_group_policy,
 248         .get_reg_config         = security_get_reg_config,
 249         .shutdown               = security_shutdown
 250 };
 251
 252 /****************************************************************
 253 ****************************************************************/
 254
 255 NTSTATUS gpext_security_init(void)
 256 {
 257         NTSTATUS status;
 258
 259         ctx = talloc_init("gpext_security_init");
 260         NT_STATUS_HAVE_NO_MEMORY(ctx);
 261
 262         status = register_gp_extension(ctx, SMB_GPEXT_INTERFACE_VERSION,
 263                                        GP_EXT_NAME, GP_EXT_GUID_SECURITY,
 264                                        &security_methods);
 265         if (!NT_STATUS_IS_OK(status)) {
 266                 TALLOC_FREE(ctx);
 267         }
 268
 269         return status;
 270 }