source3/groupdb/aliasldap.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0.
   4    LDAP local group database for SAMBA
   5    Copyright (C) Matthew Chapman 1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 */
  22
  23 #include "includes.h"
  24
  25 #ifdef WITH_LDAP
  26
  27 #include <lber.h>
  28 #include <ldap.h>
  29
  30 extern int DEBUGLEVEL;
  31
  32 /* Internal state */
  33 extern LDAP *ldap_struct;
  34 extern LDAPMessage *ldap_results;
  35 extern LDAPMessage *ldap_entry;
  36
  37 /* Static structure filled for requests */
  38 static LOCAL_GRP localgrp;
  39
  40
  41 /***************************************************************
  42   Get group and membership information.
  43  ****************************************************************/
  44
  45 static LOCAL_GRP *ldapalias_getgrp(LOCAL_GRP *group,
  46                      LOCAL_GRP_MEMBER **members, int *num_membs)
  47 {
  48         fstring temp;
  49         char **values;
  50         LOCAL_GRP_MEMBER *memblist;
  51         char *value, *sep;
  52         int i;
  53
  54         if(!ldap_entry)
  55                 return NULL;
  56
  57         if(!ldap_get_attribute("cn", group->name)) {
  58                 DEBUG(0, ("Missing cn\n"));
  59                 return NULL; }
  60
  61         DEBUG(2,("Retrieving alias [%s]\n", group->name));
  62
  63         if(ldap_get_attribute("rid", temp)) {
  64                 group->rid = atoi(temp);
  65         } else {
  66                 DEBUG(0, ("Missing rid\n"));
  67                 return NULL;
  68         }
  69
  70         if(!ldap_get_attribute("description", group->comment))
  71                 group->comment[0] = 0;
  72
  73         if(!members || !num_membs) {
  74                 ldap_entry = ldap_next_entry(ldap_struct, ldap_entry);
  75                 return group;
  76         }
  77
  78         if(values = ldap_get_values(ldap_struct, ldap_entry, "member")) {
  79
  80                 *num_membs = i = ldap_count_values(values);
  81                 *members = memblist = malloc(i * sizeof(LOCAL_GRP_MEMBER));
  82
  83                 do {
  84                         value = values[--i];
  85
  86                         if(!(sep = strchr(value, ','))) {
  87                                 DEBUG(0, ("Malformed alias member\n"));
  88                                 return NULL;
  89                         }
  90                         *(sep++) = 0;
  91                         fstrcpy(memblist[i].name, value);
  92
  93                         if(!(value = strchr(sep, ','))) {
  94                                 DEBUG(0, ("Malformed alias member\n"));
  95                                 return NULL;
  96                         }
  97                         *(value++) = 0;
  98                         string_to_sid(&memblist[i].sid, sep);
  99
 100                         if((memblist[i].sid_use = atoi(value))
 101                                         >= SID_NAME_UNKNOWN)
 102                                 DEBUG(0, ("Invalid SID use in alias"));
 103
 104                 } while(i > 0);
 105
 106                 ldap_value_free(values);
 107
 108         } else {
 109                 *num_membs = 0;
 110                 *members = NULL;
 111         }
 112
 113         return group;
 114 }
 115
 116
 117 /************************************************************************
 118   Queues the necessary modifications to save a LOCAL_GRP structure
 119  ************************************************************************/
 120
 121 static void ldapalias_grpmods(LOCAL_GRP *group, LDAPMod ***mods, int operation)
 122 {
 123         fstring temp;
 124
 125         *mods = NULL;
 126
 127         if(operation == LDAP_MOD_ADD) { /* immutable attributes */
 128                 ldap_make_mod(mods, LDAP_MOD_ADD, "objectClass", "sambaAlias");
 129                 ldap_make_mod(mods, LDAP_MOD_ADD, "cn", group->name);
 130
 131                 slprintf(temp, sizeof(temp)-1, "%d", (gid_t)(-1));
 132                 ldap_make_mod(mods, LDAP_MOD_ADD, "gidNumber", temp);
 133
 134                 slprintf(temp, sizeof(temp)-1, "%d", group->rid);
 135                 ldap_make_mod(mods, LDAP_MOD_ADD, "rid", temp);
 136         }
 137
 138         ldap_make_mod(mods, operation, "description", group->comment);
 139 }
 140
 141
 142 /***************************************************************
 143   Begin/end smbgrp enumeration.
 144  ****************************************************************/
 145
 146 static void *ldapalias_enumfirst(BOOL update)
 147 {
 148         if (lp_server_role() == ROLE_DOMAIN_NONE)
 149                 return NULL;
 150
 151         if (!ldap_open_connection(False))
 152                 return NULL;
 153
 154         ldap_search_for("objectClass=sambaAlias");
 155
 156         return ldap_struct;
 157 }
 158
 159 static void ldapalias_enumclose(void *vp)
 160 {
 161         ldap_close_connection();
 162 }
 163
 164
 165 /*************************************************************************
 166   Save/restore the current position in a query
 167  *************************************************************************/
 168
 169 static SMB_BIG_UINT ldapalias_getdbpos(void *vp)
 170 {
 171         return (SMB_BIG_UINT)((ulong)ldap_entry);
 172 }
 173
 174 static BOOL ldapalias_setdbpos(void *vp, SMB_BIG_UINT tok)
 175 {
 176         ldap_entry = (LDAPMessage *)((ulong)tok);
 177         return (True);
 178 }
 179
 180
 181 /*************************************************************************
 182   Return limited smb_passwd information, and group membership.
 183  *************************************************************************/
 184
 185 static LOCAL_GRP *ldapalias_getgrpbynam(const char *name,
 186                LOCAL_GRP_MEMBER **members, int *num_membs)
 187 {
 188         fstring filter;
 189         LOCAL_GRP *ret;
 190
 191         if(!ldap_open_connection(False))
 192                 return (False);
 193
 194         slprintf(filter, sizeof(filter)-1,
 195                  "(&(cn=%s)(objectClass=sambaAlias))", name);
 196         ldap_search_for(filter);
 197
 198         ret = ldapalias_getgrp(&localgrp, members, num_membs);
 199
 200         ldap_close_connection();
 201         return ret;
 202 }
 203
 204 static LOCAL_GRP *ldapalias_getgrpbygid(gid_t grp_id,
 205                LOCAL_GRP_MEMBER **members, int *num_membs)
 206 {
 207         fstring filter;
 208         LOCAL_GRP *ret;
 209
 210         if(!ldap_open_connection(False))
 211                 return (False);
 212
 213         slprintf(filter, sizeof(filter)-1,
 214                  "(&(gidNumber=%d)(objectClass=sambaAlias))", grp_id);
 215         ldap_search_for(filter);
 216         ret = ldapalias_getgrp(&localgrp, members, num_membs);
 217
 218         ldap_close_connection();
 219         return ret;
 220 }
 221
 222 static LOCAL_GRP *ldapalias_getgrpbyrid(uint32 grp_rid,
 223                LOCAL_GRP_MEMBER **members, int *num_membs)
 224 {
 225         fstring filter;
 226         LOCAL_GRP *ret;
 227
 228         if(!ldap_open_connection(False))
 229                 return (False);
 230
 231         slprintf(filter, sizeof(filter)-1,
 232                  "(&(rid=%d)(objectClass=sambaAlias))", grp_rid);
 233         ldap_search_for(filter);
 234         ret = ldapalias_getgrp(&localgrp, members, num_membs);
 235
 236         ldap_close_connection();
 237         return ret;
 238 }
 239
 240 static LOCAL_GRP *ldapalias_getcurrentgrp(void *vp,
 241                LOCAL_GRP_MEMBER **members, int *num_membs)
 242 {
 243         return ldapalias_getgrp(&localgrp, members, num_membs);
 244 }
 245
 246 static BOOL ldapalias_addgrp(LOCAL_GRP *group)
 247 {
 248         LDAPMod **mods;
 249
 250         ldapalias_grpmods(group, &mods, LDAP_MOD_ADD);
 251         return ldap_makemods("cn", group->name, mods, True);
 252 }
 253
 254 static BOOL ldapalias_modgrp(LOCAL_GRP *group)
 255 {
 256         LDAPMod **mods;
 257
 258         ldapalias_grpmods(group, &mods, LDAP_MOD_REPLACE);
 259         return ldap_makemods("cn", group->name, mods, False);
 260 }
 261
 262 static BOOL ldapalias_getusergroups(const char *name, LOCAL_GRP **groups,
 263                                     int *num_grps)
 264 {
 265         LOCAL_GRP *grouplist;
 266         fstring filter;
 267         int i;
 268
 269         slprintf(filter, sizeof(pstring)-1,
 270                  "(&(member=%s,*)(objectclass=sambaAlias))", name);
 271         ldap_search_for(filter);
 272
 273         *num_grps = i = ldap_count_entries(ldap_struct, ldap_results);
 274
 275         if(!i) {
 276                 *groups = NULL;
 277                 return (True);
 278         }
 279
 280         *groups = grouplist = malloc(i * sizeof(LOCAL_GRP));
 281         do {
 282                 i--;
 283         } while(ldapalias_getgrp(&grouplist[i], NULL, NULL) && (i > 0));
 284
 285         return (True);
 286 }
 287
 288
 289 static struct aliasdb_ops ldapalias_ops =
 290 {
 291         ldapalias_enumfirst,
 292         ldapalias_enumclose,
 293         ldapalias_getdbpos,
 294         ldapalias_setdbpos,
 295
 296         ldapalias_getgrpbynam,
 297         ldapalias_getgrpbygid,
 298         ldapalias_getgrpbyrid,
 299         ldapalias_getcurrentgrp,
 300
 301         ldapalias_addgrp,
 302         ldapalias_modgrp,
 303
 304         ldapalias_getusergroups
 305 };
 306
 307 struct aliasdb_ops *ldap_initialise_alias_db(void)
 308 {
 309         return &ldapalias_ops;
 310 }
 311
 312 #else
 313  void aliasldap_dummy_function(void);
 314  void aliasldap_dummy_function(void) { } /* stop some compilers complaining */
 315 #endif
 316