source3/passdb/pdb_ldap_util.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    LDAP protocol helper functions for SAMBA
   4    Copyright (C) Jean François Micouleau        1998
   5    Copyright (C) Gerald Carter                  2001-2003
   6    Copyright (C) Shahms King                    2001
   7    Copyright (C) Andrew Bartlett                2002-2003
   8    Copyright (C) Stefan (metze) Metzmacher      2002-2003
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 */
  24
  25 #include "includes.h"
  26 #include "smbldap.h"
  27 #include "passdb.h"
  28 #include "passdb/pdb_ldap_util.h"
  29 #include "passdb/pdb_ldap_schema.h"
  30
  31 /**********************************************************************
  32  Add the account-policies below the sambaDomain object to LDAP,
  33 *********************************************************************/
  34
  35 static NTSTATUS add_new_domain_account_policies(struct smbldap_state *ldap_state,
  36                                                 const char *domain_name)
  37 {
  38         NTSTATUS ntstatus = NT_STATUS_UNSUCCESSFUL;
  39         int i, rc;
  40         uint32 policy_default;
  41         const char *policy_attr = NULL;
  42         char *dn = NULL;
  43         LDAPMod **mods = NULL;
  44         char *escape_domain_name;
  45
  46         DEBUG(3,("add_new_domain_account_policies: Adding new account policies for domain\n"));
  47
  48         escape_domain_name = escape_rdn_val_string_alloc(domain_name);
  49         if (!escape_domain_name) {
  50                 DEBUG(0, ("Out of memory!\n"));
  51                 return NT_STATUS_NO_MEMORY;
  52         }
  53
  54         if (asprintf(&dn, "%s=%s,%s",
  55                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
  56                 escape_domain_name, lp_ldap_suffix(talloc_tos())) < 0) {
  57                 SAFE_FREE(escape_domain_name);
  58                 return NT_STATUS_NO_MEMORY;
  59         }
  60
  61         SAFE_FREE(escape_domain_name);
  62
  63         for (i=1; decode_account_policy_name(i) != NULL; i++) {
  64                 char *val = NULL;
  65
  66                 policy_attr = get_account_policy_attr(i);
  67                 if (!policy_attr) {
  68                         DEBUG(0,("add_new_domain_account_policies: ops. no policy!\n"));
  69                         continue;
  70                 }
  71
  72                 if (!account_policy_get_default(i, &policy_default)) {
  73                         DEBUG(0,("add_new_domain_account_policies: failed to get default account policy\n"));
  74                         SAFE_FREE(dn);
  75                         return ntstatus;
  76                 }
  77
  78                 DEBUG(10,("add_new_domain_account_policies: adding \"%s\" with value: %d\n", policy_attr, policy_default));
  79
  80                 if (asprintf(&val, "%d", policy_default) < 0) {
  81                         SAFE_FREE(dn);
  82                         return NT_STATUS_NO_MEMORY;
  83                 }
  84
  85                 smbldap_set_mod( &mods, LDAP_MOD_REPLACE, policy_attr, val);
  86
  87                 rc = smbldap_modify(ldap_state, dn, mods);
  88
  89                 SAFE_FREE(val);
  90
  91                 if (rc!=LDAP_SUCCESS) {
  92                         char *ld_error = NULL;
  93                         ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
  94                         DEBUG(1,("add_new_domain_account_policies: failed to add account policies to dn= %s with: %s\n\t%s\n",
  95                                 dn, ldap_err2string(rc),
  96                                 ld_error ? ld_error : "unknown"));
  97                         SAFE_FREE(ld_error);
  98                         SAFE_FREE(dn);
  99                         ldap_mods_free(mods, True);
 100                         return ntstatus;
 101                 }
 102         }
 103
 104         SAFE_FREE(dn);
 105         ldap_mods_free(mods, True);
 106
 107         return NT_STATUS_OK;
 108 }
 109
 110 /**********************************************************************
 111  Add the sambaDomain to LDAP, so we don't have to search for this stuff
 112  again.  This is a once-add operation for now.
 113
 114  TODO:  Add other attributes, and allow modification.
 115 *********************************************************************/
 116
 117 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
 118                                     const char *domain_name)
 119 {
 120         fstring sid_string;
 121         fstring algorithmic_rid_base_string;
 122         char *filter = NULL;
 123         char *dn = NULL;
 124         LDAPMod **mods = NULL;
 125         int rc;
 126         LDAPMessage *result = NULL;
 127         int num_result;
 128         const char **attr_list;
 129         char *escape_domain_name;
 130
 131         /* escape for filter */
 132         escape_domain_name = escape_ldap_string(talloc_tos(), domain_name);
 133         if (!escape_domain_name) {
 134                 DEBUG(0, ("Out of memory!\n"));
 135                 return NT_STATUS_NO_MEMORY;
 136         }
 137
 138         if (asprintf(&filter, "(&(%s=%s)(objectclass=%s))",
 139                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
 140                         escape_domain_name, LDAP_OBJ_DOMINFO) < 0) {
 141                 TALLOC_FREE(escape_domain_name);
 142                 return NT_STATUS_NO_MEMORY;
 143         }
 144
 145         TALLOC_FREE(escape_domain_name);
 146
 147         attr_list = get_attr_list(NULL, dominfo_attr_list );
 148         rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
 149         TALLOC_FREE( attr_list );
 150         SAFE_FREE(filter);
 151
 152         if (rc != LDAP_SUCCESS) {
 153                 return NT_STATUS_UNSUCCESSFUL;
 154         }
 155
 156         num_result = ldap_count_entries(ldap_state->ldap_struct, result);
 157
 158         if (num_result > 1) {
 159                 DEBUG (0, ("add_new_domain_info: More than domain with that name exists: bailing "
 160                            "out!\n"));
 161                 ldap_msgfree(result);
 162                 return NT_STATUS_UNSUCCESSFUL;
 163         }
 164
 165         /* Check if we need to add an entry */
 166         DEBUG(3,("add_new_domain_info: Adding new domain\n"));
 167
 168         /* this time escape for DN */
 169         escape_domain_name = escape_rdn_val_string_alloc(domain_name);
 170         if (!escape_domain_name) {
 171                 DEBUG(0, ("Out of memory!\n"));
 172                 return NT_STATUS_NO_MEMORY;
 173         }
 174
 175         if (asprintf(&dn, "%s=%s,%s",
 176                      get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
 177                      escape_domain_name, lp_ldap_suffix(talloc_tos())) < 0) {
 178                 SAFE_FREE(escape_domain_name);
 179                 return NT_STATUS_NO_MEMORY;
 180         }
 181
 182         SAFE_FREE(escape_domain_name);
 183
 184         /* Free original search */
 185         ldap_msgfree(result);
 186
 187         /* make the changes - the entry *must* not already have samba
 188          * attributes */
 189
 190         smbldap_set_mod(&mods, LDAP_MOD_ADD,
 191                         get_attr_key2string(dominfo_attr_list,
 192                                             LDAP_ATTR_DOMAIN),
 193                         domain_name);
 194
 195         /* If we don't have an entry, then ask secrets.tdb for what it thinks.
 196            It may choose to make it up */
 197
 198         sid_to_fstring(sid_string, get_global_sam_sid());
 199         smbldap_set_mod(&mods, LDAP_MOD_ADD,
 200                         get_attr_key2string(dominfo_attr_list,
 201                                             LDAP_ATTR_DOM_SID),
 202                         sid_string);
 203
 204         slprintf(algorithmic_rid_base_string,
 205                  sizeof(algorithmic_rid_base_string) - 1, "%i",
 206                  algorithmic_rid_base());
 207         smbldap_set_mod(&mods, LDAP_MOD_ADD,
 208                         get_attr_key2string(dominfo_attr_list,
 209                                             LDAP_ATTR_ALGORITHMIC_RID_BASE),
 210                         algorithmic_rid_base_string);
 211         smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
 212
 213         /* add the sambaNextUserRid attributes. */
 214
 215         {
 216                 uint32 rid = BASE_RID;
 217                 fstring rid_str;
 218
 219                 fstr_sprintf( rid_str, "%i", rid );
 220                 DEBUG(10,("add_new_domain_info: setting next available user rid [%s]\n", rid_str));
 221                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
 222                         get_attr_key2string(dominfo_attr_list,
 223                                             LDAP_ATTR_NEXT_USERRID),
 224                         rid_str);
 225         }
 226
 227
 228         rc = smbldap_add(ldap_state, dn, mods);
 229
 230         if (rc!=LDAP_SUCCESS) {
 231                 char *ld_error = NULL;
 232                 ldap_get_option(ldap_state->ldap_struct,
 233                                 LDAP_OPT_ERROR_STRING, &ld_error);
 234                 DEBUG(1,("add_new_domain_info: failed to add domain dn= %s with: %s\n\t%s\n",
 235                          dn, ldap_err2string(rc),
 236                          ld_error?ld_error:"unknown"));
 237                 SAFE_FREE(ld_error);
 238                 SAFE_FREE(dn);
 239                 ldap_mods_free(mods, True);
 240                 return NT_STATUS_UNSUCCESSFUL;
 241         }
 242
 243         DEBUG(2,("add_new_domain_info: added: domain = %s in the LDAP database\n", domain_name));
 244         ldap_mods_free(mods, True);
 245         SAFE_FREE(dn);
 246         return NT_STATUS_OK;
 247 }
 248
 249 /**********************************************************************
 250 Search for the domain info entry
 251 *********************************************************************/
 252
 253 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
 254                                     LDAPMessage ** result, const char *domain_name,
 255                                     bool try_add)
 256 {
 257         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 258         char *filter = NULL;
 259         int rc;
 260         const char **attr_list;
 261         int count;
 262         char *escape_domain_name;
 263
 264         escape_domain_name = escape_ldap_string(talloc_tos(), domain_name);
 265         if (!escape_domain_name) {
 266                 DEBUG(0, ("Out of memory!\n"));
 267                 return NT_STATUS_NO_MEMORY;
 268         }
 269
 270         if (asprintf(&filter, "(&(objectClass=%s)(%s=%s))",
 271                 LDAP_OBJ_DOMINFO,
 272                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
 273                 escape_domain_name) < 0) {
 274                 TALLOC_FREE(escape_domain_name);
 275                 return NT_STATUS_NO_MEMORY;
 276         }
 277
 278         TALLOC_FREE(escape_domain_name);
 279
 280         DEBUG(2, ("smbldap_search_domain_info: Searching for:[%s]\n", filter));
 281
 282         attr_list = get_attr_list( NULL, dominfo_attr_list );
 283         rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
 284         TALLOC_FREE( attr_list );
 285
 286         if (rc != LDAP_SUCCESS) {
 287                 DEBUG(2,("smbldap_search_domain_info: Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
 288                 DEBUG(2,("smbldap_search_domain_info: Query was: %s, %s\n", lp_ldap_suffix(talloc_tos()), filter));
 289                 goto failed;
 290         }
 291
 292         SAFE_FREE(filter);
 293
 294         count = ldap_count_entries(ldap_state->ldap_struct, *result);
 295
 296         if (count == 1) {
 297                 return NT_STATUS_OK;
 298         }
 299
 300         ldap_msgfree(*result);
 301         *result = NULL;
 302
 303         if (count < 1) {
 304
 305                 DEBUG(3, ("smbldap_search_domain_info: Got no domain info entries for domain\n"));
 306
 307                 if (!try_add)
 308                         goto failed;
 309
 310                 status = add_new_domain_info(ldap_state, domain_name);
 311                 if (!NT_STATUS_IS_OK(status)) {
 312                         DEBUG(0, ("smbldap_search_domain_info: Adding domain info for %s failed with %s\n",
 313                                 domain_name, nt_errstr(status)));
 314                         goto failed;
 315                 }
 316
 317                 status = add_new_domain_account_policies(ldap_state, domain_name);
 318                 if (!NT_STATUS_IS_OK(status)) {
 319                         DEBUG(0, ("smbldap_search_domain_info: Adding domain account policies for %s failed with %s\n",
 320                                 domain_name, nt_errstr(status)));
 321                         goto failed;
 322                 }
 323
 324                 return smbldap_search_domain_info(ldap_state, result, domain_name, False);
 325
 326         }
 327
 328         if (count > 1 ) {
 329
 330                 DEBUG(0, ("smbldap_search_domain_info: Got too many (%d) domain info entries for domain %s\n",
 331                           count, domain_name));
 332                 goto failed;
 333         }
 334
 335 failed:
 336         return status;
 337 }