git.sur5r.net Git - openldap/blob - servers/slapd/mods.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2004 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <ac/string.h>
  29
  30 #include "slap.h"
  31
  32 int
  33 modify_add_values(
  34         Entry   *e,
  35         Modification    *mod,
  36         int     permissive,
  37         const char      **text,
  38         char *textbuf, size_t textlen )
  39 {
  40         const char *op;
  41         Attribute *a;
  42
  43         switch( mod->sm_op ) {
  44         case LDAP_MOD_ADD:
  45                 op = "add";
  46                 break;
  47         case LDAP_MOD_REPLACE:
  48                 op = "replace";
  49                 break;
  50         default:
  51                 op = "?";
  52                 assert( 0 );
  53         }
  54
  55         a = attr_find( e->e_attrs, mod->sm_desc );
  56         if( a != NULL ) { /* check if values to add exist in attribute */
  57                 int     rc, i, j;
  58                 MatchingRule *mr;
  59
  60                 mr = mod->sm_desc->ad_type->sat_equality;
  61                 if( mr == NULL || !mr->smr_match ) {
  62                         /* do not allow add of additional attribute
  63                                 if no equality rule exists */
  64                         *text = textbuf;
  65                         snprintf( textbuf, textlen,
  66                                 "modify/%s: %s: no equality matching rule",
  67                                 op, mod->sm_desc->ad_cname.bv_val );
  68                         return LDAP_INAPPROPRIATE_MATCHING;
  69                 }
  70
  71                 /* no normalization is done in this routine nor
  72                  * in the matching routines called by this routine.
  73                  * values are now normalized once on input to the
  74                  * server (whether from LDAP or from the underlying
  75                  * database).
  76                  */
  77                 for ( i=0; mod->sm_values[i].bv_val != NULL; i++ ) {
  78                         for ( j=0; a->a_vals[j].bv_val; j++ ) {
  79                                 int match;
  80                                 if( mod->sm_nvalues ) {
  81                                         rc = value_match( &match, mod->sm_desc, mr,
  82                                                 SLAP_MR_EQUALITY | SLAP_MR_VALUE_OF_ASSERTION_SYNTAX
  83                                                         | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH
  84                                                         | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH,
  85                                                 &a->a_nvals[j], &mod->sm_nvalues[i], text );
  86                                 } else {
  87                                         rc = value_match( &match, mod->sm_desc, mr,
  88                                                 SLAP_MR_EQUALITY | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
  89                                                 &a->a_vals[i], &mod->sm_values[i], text );
  90                                 }
  91
  92                                 if( rc != LDAP_SUCCESS ) {
  93                                         *text = textbuf;
  94                                         snprintf( textbuf, textlen,
  95                                                 "modify/%s: %s: value #%d already exists",
  96                                                 op, mod->sm_desc->ad_cname.bv_val, i );
  97                                         return LDAP_TYPE_OR_VALUE_EXISTS;
  98                                 }
  99                         }
 100                 }
 101         }
 102
 103         /* no - add them */
 104         if( attr_merge( e, mod->sm_desc, mod->sm_values, mod->sm_nvalues ) != 0 ) {
 105                 /* this should return result of attr_merge */
 106                 *text = textbuf;
 107                 snprintf( textbuf, textlen,
 108                         "modify/%s: %s: merge error",
 109                         op, mod->sm_desc->ad_cname.bv_val );
 110                 return LDAP_OTHER;
 111         }
 112
 113         return LDAP_SUCCESS;
 114 }
 115
 116 int
 117 modify_delete_values(
 118         Entry   *e,
 119         Modification    *mod,
 120         int     permissive,
 121         const char      **text,
 122         char *textbuf, size_t textlen )
 123 {
 124         int             i, j, k, rc = LDAP_SUCCESS;
 125         Attribute       *a;
 126         MatchingRule    *mr = mod->sm_desc->ad_type->sat_equality;
 127         char            dummy = '\0';
 128         int                     match = 0;
 129
 130         /*
 131          * If permissive is set, then the non-existence of an
 132          * attribute is not treated as an error.
 133          */
 134
 135         /* delete the entire attribute */
 136         if ( mod->sm_values == NULL ) {
 137                 rc = attr_delete( &e->e_attrs, mod->sm_desc );
 138
 139                 if( permissive ) {
 140                         rc = LDAP_SUCCESS;
 141                 } else if( rc != LDAP_SUCCESS ) {
 142                         *text = textbuf;
 143                         snprintf( textbuf, textlen,
 144                                 "modify/delete: %s: no such attribute",
 145                                 mod->sm_desc->ad_cname.bv_val );
 146                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 147                 }
 148                 return rc;
 149         }
 150
 151         if( mr == NULL || !mr->smr_match ) {
 152                 /* disallow specific attributes from being deleted if
 153                         no equality rule */
 154                 *text = textbuf;
 155                 snprintf( textbuf, textlen,
 156                         "modify/delete: %s: no equality matching rule",
 157                         mod->sm_desc->ad_cname.bv_val );
 158                 return LDAP_INAPPROPRIATE_MATCHING;
 159         }
 160
 161         /* delete specific values - find the attribute first */
 162         if ( (a = attr_find( e->e_attrs, mod->sm_desc )) == NULL ) {
 163                 if( permissive ) {
 164                         return LDAP_SUCCESS;
 165                 }
 166                 *text = textbuf;
 167                 snprintf( textbuf, textlen,
 168                         "modify/delete: %s: no such attribute",
 169                         mod->sm_desc->ad_cname.bv_val );
 170                 return LDAP_NO_SUCH_ATTRIBUTE;
 171         }
 172
 173         for ( i = 0; mod->sm_values[i].bv_val != NULL; i++ ) {
 174                 int     found = 0;
 175                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) {
 176
 177                         if( mod->sm_nvalues ) {
 178                                 assert( a->a_nvals );
 179                                 rc = (*mr->smr_match)( &match,
 180                                         SLAP_MR_VALUE_OF_ASSERTION_SYNTAX
 181                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH
 182                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH,
 183                                         a->a_desc->ad_type->sat_syntax,
 184                                         mr, &a->a_nvals[j],
 185                                         &mod->sm_nvalues[i] );
 186                         } else {
 187 #if 0
 188                                 assert( a->a_nvals == NULL );
 189 #endif
 190                                 rc = (*mr->smr_match)( &match,
 191                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 192                                         a->a_desc->ad_type->sat_syntax,
 193                                         mr, &a->a_vals[j],
 194                                         &mod->sm_values[i] );
 195                         }
 196
 197                         if ( rc != LDAP_SUCCESS ) {
 198                                 *text = textbuf;
 199                                 snprintf( textbuf, textlen,
 200                                         "%s: matching rule failed",
 201                                         mod->sm_desc->ad_cname.bv_val );
 202                                 break;
 203                         }
 204
 205                         if ( match != 0 ) {
 206                                 continue;
 207                         }
 208
 209                         found = 1;
 210
 211                         /* delete value and mark it as dummy */
 212                         free( a->a_vals[j].bv_val );
 213                         a->a_vals[j].bv_val = &dummy;
 214                         if( a->a_nvals != a->a_vals ) {
 215                                 free( a->a_nvals[j].bv_val );
 216                                 a->a_nvals[j].bv_val = &dummy;
 217                         }
 218
 219                         break;
 220                 }
 221
 222                 if ( found == 0 ) {
 223                         *text = textbuf;
 224                         snprintf( textbuf, textlen,
 225                                 "modify/delete: %s: no such value",
 226                                 mod->sm_desc->ad_cname.bv_val );
 227                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 228                         if ( i > 0 ) {
 229                                 break;
 230                         } else {
 231                                 goto return_results;
 232                         }
 233                 }
 234         }
 235
 236         /* compact array skipping dummies */
 237         for ( k = 0, j = 0; a->a_vals[k].bv_val != NULL; k++ ) {
 238                 /* skip dummies */
 239                 if( a->a_vals[k].bv_val == &dummy ) {
 240                         assert( a->a_nvals == NULL || a->a_nvals[k].bv_val == &dummy );
 241                         continue;
 242                 }
 243                 if ( j != k ) {
 244                         a->a_vals[ j ] = a->a_vals[ k ];
 245                         if (a->a_nvals != a->a_vals) {
 246                                 a->a_nvals[ j ] = a->a_nvals[ k ];
 247                         }
 248                 }
 249
 250                 j++;
 251         }
 252
 253         a->a_vals[j].bv_val = NULL;
 254         if (a->a_nvals != a->a_vals) a->a_nvals[j].bv_val = NULL;
 255
 256         /* if no values remain, delete the entire attribute */
 257         if ( a->a_vals[0].bv_val == NULL ) {
 258                 if ( attr_delete( &e->e_attrs, mod->sm_desc ) ) {
 259                         *text = textbuf;
 260                         snprintf( textbuf, textlen,
 261                                 "modify/delete: %s: no such attribute",
 262                                 mod->sm_desc->ad_cname.bv_val );
 263                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 264                 }
 265         }
 266
 267 return_results:;
 268
 269         return rc;
 270 }
 271
 272 int
 273 modify_replace_values(
 274         Entry   *e,
 275         Modification    *mod,
 276         int             permissive,
 277         const char      **text,
 278         char *textbuf, size_t textlen )
 279 {
 280         (void) attr_delete( &e->e_attrs, mod->sm_desc );
 281
 282         if ( mod->sm_values ) {
 283                 return modify_add_values( e, mod, permissive, text, textbuf, textlen );
 284         }
 285
 286         return LDAP_SUCCESS;
 287 }
 288
 289 int
 290 modify_increment_values(
 291         Entry   *e,
 292         Modification    *mod,
 293         int     permissive,
 294         const char      **text,
 295         char *textbuf, size_t textlen )
 296 {
 297         Attribute *a;
 298
 299         a = attr_find( e->e_attrs, mod->sm_desc );
 300         if( a == NULL ) {
 301                 *text = textbuf;
 302                 snprintf( textbuf, textlen,
 303                         "modify/increment: %s: no such attribute",
 304                         mod->sm_desc->ad_cname.bv_val );
 305                 return LDAP_NO_SUCH_ATTRIBUTE;
 306         }
 307
 308         if ( !strcmp( a->a_desc->ad_type->sat_syntax_oid, SLAPD_INTEGER_SYNTAX )) {
 309                 int i;
 310                 char str[sizeof(long)*3 + 2]; /* overly long */
 311                 long incr = atol( mod->sm_values[0].bv_val );
 312
 313                 /* treat zero and errors as a no-op */
 314                 if( incr == 0 ) {
 315                         return LDAP_SUCCESS;
 316                 }
 317
 318                 for( i=0; a->a_nvals[i].bv_val != NULL; i++ ) {
 319                         char *tmp;
 320                         long value = atol( a->a_nvals[i].bv_val );
 321                         size_t strln = snprintf( str, sizeof(str), "%ld", value+incr );
 322
 323                         tmp = SLAP_REALLOC( a->a_nvals[i].bv_val, strln+1 );
 324                         if( tmp == NULL ) {
 325                                 *text = "modify/increment: reallocation error";
 326                                 return LDAP_OTHER;;
 327                         }
 328                         a->a_nvals[i].bv_val = tmp;
 329                         a->a_nvals[i].bv_len = strln;
 330
 331                         AC_MEMCPY( a->a_nvals[i].bv_val, str, strln+1 );
 332                 }
 333
 334         } else {
 335                 snprintf( textbuf, textlen,
 336                         "modify/increment: %s: increment not supported for value syntax %s",
 337                         mod->sm_desc->ad_cname.bv_val,
 338                         a->a_desc->ad_type->sat_syntax_oid );
 339                 return LDAP_CONSTRAINT_VIOLATION;
 340         }
 341
 342         return LDAP_SUCCESS;
 343 }
 344
 345 void
 346 slap_mod_free(
 347         Modification    *mod,
 348         int                             freeit )
 349 {
 350         if ( mod->sm_values != NULL ) ber_bvarray_free( mod->sm_values );
 351         mod->sm_values = NULL;
 352
 353         if ( mod->sm_nvalues != NULL ) ber_bvarray_free( mod->sm_nvalues );
 354         mod->sm_nvalues = NULL;
 355
 356         if( freeit ) free( mod );
 357 }
 358
 359 void
 360 slap_mods_free(
 361     Modifications       *ml )
 362 {
 363         Modifications *next;
 364
 365         for ( ; ml != NULL; ml = next ) {
 366                 next = ml->sml_next;
 367
 368                 slap_mod_free( &ml->sml_mod, 0 );
 369                 free( ml );
 370         }
 371 }
 372