git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/modrdn.c

   1 /* modrdn.c - ldbm backend modrdn routine */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/string.h>
   8 #include <ac/socket.h>
   9
  10 #include "slap.h"
  11 #include "back-ldbm.h"
  12 #include "proto-back-ldbm.h"
  13
  14 int
  15 ldbm_back_modrdn(
  16     Backend     *be,
  17     Connection  *conn,
  18     Operation   *op,
  19     char        *dn,
  20     char        *newrdn,
  21     int         deleteoldrdn
  22 )
  23 {
  24         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  25         char            *matched = NULL;
  26         char            *p_dn = NULL, *p_ndn = NULL;
  27         char            *new_dn = NULL, *new_ndn = NULL;
  28         char            sep[2];
  29         Entry           *e, *p = NULL;
  30         int             rootlock = 0;
  31         int             rc = -1;
  32
  33         char            *new_rdn_val = NULL;    /* Val of new rdn */
  34         char            *new_rdn_type = NULL;   /* Type of new rdn */
  35         char            *old_rdn;               /* Old rdn's attr type & val */
  36         char            *old_rdn_type = NULL;   /* Type of old rdn attr. */
  37         char            *old_rdn_val = NULL;    /* Old rdn attribute value */
  38         struct berval   add_bv;                 /* Stores new rdn att */
  39         struct berval   *add_bvals[2];          /* Stores new rdn att */
  40         struct berval   del_bv;                 /* Stores old rdn att */
  41         struct berval   *del_bvals[2];          /* Stores old rdn att */
  42         LDAPMod         mod[2];                 /* Used to delete old rdn */
  43
  44         Debug( LDAP_DEBUG_TRACE,
  45                "ldbm_back_modrdn:()==>\n",
  46                0, 0, 0 );
  47
  48         /* get entry with writer lock */
  49         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  50                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  51                 if ( matched != NULL ) {
  52                         free( matched );
  53                 }
  54                 return( -1 );
  55         }
  56
  57 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  58                 /* check parent for "children" acl */
  59         if ( ! access_allowed( be, conn, op, e,
  60                 "entry", NULL, ACL_WRITE ) )
  61         {
  62                 Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
  63                         0, 0 );
  64                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  65                         "", "" );
  66                 goto return_results;
  67         }
  68 #endif
  69
  70         if ( (p_ndn = dn_parent( be, e->e_ndn )) != NULL ) {
  71                 /* parent + rdn + separator(s) + null */
  72                 if( (p = dn2entry_w( be, p_ndn, &matched )) == NULL) {
  73                         Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
  74                                 0, 0, 0);
  75                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
  76                                 "", "");
  77                         goto return_results;
  78                 }
  79
  80 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  81                 /* check parent for "children" acl */
  82                 if ( ! access_allowed( be, conn, op, p,
  83                         "children", NULL, ACL_WRITE ) )
  84                 {
  85                         Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
  86                                 0, 0 );
  87                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  88                                 "", "" );
  89                         goto return_results;
  90                 }
  91 #endif
  92
  93                 p_dn = dn_parent( be, e->e_dn );
  94
  95
  96         } else {
  97                 /* no parent, modrdn entry directly under root */
  98                 if( ! be_isroot( be, op->o_ndn ) ) {
  99                         Debug( LDAP_DEBUG_TRACE, "no parent & not root\n",
 100                                 0, 0, 0);
 101                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 102                                 "", "");
 103                         goto return_results;
 104                 }
 105
 106                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 107                 rootlock = 1;
 108
 109
 110         }
 111
 112         build_new_dn( &new_dn, e->e_dn, p_dn, newrdn );
 113         new_ndn = dn_normalize_case( ch_strdup( new_dn ) );
 114
 115         /* Get attribute type and attribute value of our new rdn, we will
 116          * need to add that to our new entry
 117          */
 118
 119         if ( (new_rdn_type = rdn_attr_type( newrdn )) == NULL ) {
 120
 121                 Debug( LDAP_DEBUG_TRACE,
 122                        "ldbm_back_modrdn: can't figure out type of newrdn\n",
 123                        0, 0, 0 );
 124                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 125                 goto return_results;
 126
 127         }
 128
 129         if ( (new_rdn_val = rdn_attr_value( newrdn )) == NULL ) {
 130
 131                 Debug( LDAP_DEBUG_TRACE,
 132                        "ldbm_back_modrdn: can't figure out val of newrdn\n",
 133                        0, 0, 0 );
 134                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 135                 goto return_results;
 136
 137         }
 138
 139         Debug( LDAP_DEBUG_TRACE,
 140                "ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
 141                new_rdn_val, new_rdn_type, 0 );
 142
 143         /* Retrieve the old rdn from the entry's dn */
 144
 145         if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
 146
 147                 Debug( LDAP_DEBUG_TRACE,
 148                        "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
 149                        0, 0, 0 );
 150                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 151                 goto return_results;
 152
 153         }
 154
 155         if ( (old_rdn_type = rdn_attr_type( old_rdn )) == NULL ) {
 156
 157                 Debug( LDAP_DEBUG_TRACE,
 158                        "ldbm_back_modrdn: can't figure out the old_rdn type\n",
 159                        0, 0, 0 );
 160                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 161                 goto return_results;
 162
 163         }
 164
 165         if ( strcasecmp( old_rdn_type, new_rdn_type ) != 0 ) {
 166
 167             /* Not a big deal but we may say something */
 168             Debug( LDAP_DEBUG_TRACE,
 169                    "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
 170                    old_rdn_type, new_rdn_type, 0 );
 171
 172         }
 173
 174         if ( dn_type( old_rdn ) == DN_X500 ) {
 175
 176                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
 177                        0, 0, 0 );
 178
 179                 /* Add new attribute value to the entry.
 180                  */
 181
 182                 add_bvals[0] = &add_bv;         /* Array of bervals */
 183                 add_bvals[1] = NULL;
 184
 185                 add_bv.bv_val = new_rdn_val;
 186                 add_bv.bv_len = strlen(new_rdn_val);
 187
 188                 mod[0].mod_type = new_rdn_type;
 189                 mod[0].mod_bvalues = add_bvals;
 190                 mod[0].mod_op = LDAP_MOD_SOFTADD;
 191                 mod[0].mod_next = NULL;
 192
 193                 Debug( LDAP_DEBUG_TRACE,
 194                        "ldbm_back_modrdn: adding new rdn attr val =\"%s\"\n",
 195                        new_rdn_val, 0, 0 );
 196
 197                 /* Remove old rdn value if required */
 198
 199                 if (deleteoldrdn) {
 200
 201                         del_bvals[0] = &del_bv;         /* Array of bervals */
 202                         del_bvals[1] = NULL;
 203                         /* Get value of old rdn */
 204
 205                         if ((old_rdn_val = rdn_attr_value( old_rdn ))
 206                             == NULL) {
 207
 208                                 Debug( LDAP_DEBUG_TRACE,
 209                                        "ldbm_back_modrdn: can't figure out old_rdn_val from old_rdn\n",
 210                                        0, 0, 0 );
 211                                 send_ldap_result( conn, op,
 212                                                   LDAP_OPERATIONS_ERROR,
 213                                                   "", "" );
 214                                 goto return_results;
 215
 216
 217                         }
 218
 219                         /* Remove old value of rdn as an attribute. */
 220
 221                         del_bv.bv_val = old_rdn_val;
 222                         del_bv.bv_len = strlen(old_rdn_val);
 223
 224                         /* No need to normalize old_rdn_type, delete_values()
 225                          * does that for us
 226                          */
 227                         mod[0].mod_next = &mod[1];
 228                         mod[1].mod_type = old_rdn_type;
 229                         mod[1].mod_bvalues = del_bvals;
 230                         mod[1].mod_op = LDAP_MOD_DELETE;
 231                         mod[1].mod_next = NULL;
 232
 233                 }/* if (deleteoldrdn) */
 234
 235                 /* modify memory copy of entry */
 236                 if ( ldbm_internal_modify( be, conn, op, dn, &mod[0], e )
 237                      != 0 ) {
 238
 239                         goto return_results;
 240
 241                 }
 242
 243         } else {
 244
 245
 246                 Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DNS DN\n",
 247                        0, 0, 0 );
 248                 /* XXXV3: not sure of what to do here */
 249                 Debug( LDAP_DEBUG_TRACE,
 250                        "ldbm_back_modrdn: not fully implemented...\n",
 251                        0, 0, 0 );
 252                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 253                 goto return_results;
 254
 255         }
 256
 257         if ( (dn2id ( be, new_ndn ) ) != NOID ) {
 258                 send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, NULL, NULL );
 259                 goto return_results;
 260         }
 261
 262         /* check for abandon */
 263         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 264         if ( op->o_abandon ) {
 265                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 266                 goto return_results;
 267         }
 268         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 269
 270         /* add new one */
 271         if ( dn2id_add( be, new_ndn, e->e_id ) != 0 ) {
 272                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 273                 goto return_results;
 274         }
 275
 276         /* delete old one */
 277         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 278                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
 279                 goto return_results;
 280         }
 281
 282
 283         (void) cache_delete_entry( &li->li_cache, e );
 284         free( e->e_dn );
 285         free( e->e_ndn );
 286         e->e_dn = new_dn;
 287         e->e_ndn = new_ndn;
 288         (void) cache_update_entry( &li->li_cache, e );
 289
 290         /* id2entry index: commit */
 291         if ( id2entry_add( be, e ) != 0 ) {
 292                 entry_free( e );
 293                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 294                 goto return_results_new;
 295         }
 296
 297         send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
 298         rc = 0;
 299
 300         Debug( LDAP_DEBUG_TRACE,
 301                "ldbm_back_modrdn:()<==\n",
 302                0, 0, 0 );
 303         goto return_results_new;
 304
 305 return_results:
 306         if( new_dn != NULL ) free( new_dn );
 307         if( new_ndn != NULL ) free( new_ndn );
 308 return_results_new:
 309         /* NOTE:
 310          * new_dn and new_ndn are not deallocated because they are used by
 311          * the cache entry at this point.
 312          */
 313         if( p_dn != NULL ) free( p_dn );
 314         if( p_ndn != NULL ) free( p_ndn );
 315
 316         if( matched != NULL ) free( matched );
 317
 318         /* LDAP v2 supporting correct attribute handling. */
 319         if( new_rdn_type != NULL ) free(new_rdn_type);
 320         if( new_rdn_val != NULL ) free(new_rdn_val);
 321         if( old_rdn != NULL ) free(old_rdn);
 322         if( old_rdn_type != NULL ) free(old_rdn_type);
 323         if( old_rdn_val != NULL ) free(old_rdn_val);
 324
 325         if( p != NULL ) {
 326                 /* free parent and writer lock */
 327                 cache_return_entry_w( &li->li_cache, p );
 328         }
 329
 330         if ( rootlock ) {
 331                 /* release root writer lock */
 332                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 333         }
 334
 335         /* free entry and writer lock */
 336         cache_return_entry_w( &li->li_cache, e );
 337         return( rc );
 338 }