git.sur5r.net Git - openldap/blob - servers/slapd/back-sql/schema-map.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2004 The OpenLDAP Foundation.
   5  * Portions Copyright 1999 Dmitry Kovalev.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Dmitry Kovalev for inclusion
  18  * by OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #include <stdio.h>
  24 #include <sys/types.h>
  25 #include "ac/string.h"
  26
  27 #include "slap.h"
  28 #include "proto-sql.h"
  29
  30 #define BACKSQL_DUPLICATE       (-1)
  31
  32 /* NOTE: by default, cannot just compare pointers because
  33  * objectClass/attributeType order would be machine-dependent
  34  * (and tests would fail!); however, if you don't want to run
  35  * tests, or see attributeTypes written in the same order
  36  * they are defined, define */
  37 /* #undef BACKSQL_USE_PTR_CMP */
  38
  39 /*
  40  * Uses the pointer to the ObjectClass structure
  41  */
  42 static int
  43 backsql_cmp_oc( const void *v_m1, const void *v_m2 )
  44 {
  45         const backsql_oc_map_rec        *m1 = v_m1,
  46                                         *m2 = v_m2;
  47
  48 #ifdef BACKSQL_USE_PTR_CMP
  49         return SLAP_PTRCMP( m1->bom_oc, m2->bom_oc );
  50 #else /* ! BACKSQL_USE_PTR_CMP */
  51         return ber_bvcmp( &m1->bom_oc->soc_cname, &m2->bom_oc->soc_cname );
  52 #endif /* ! BACKSQL_USE_PTR_CMP */
  53 }
  54
  55 static int
  56 backsql_cmp_oc_id( const void *v_m1, const void *v_m2 )
  57 {
  58         const backsql_oc_map_rec        *m1 = v_m1,
  59                                         *m2 = v_m2;
  60
  61         return ( m1->bom_id < m2->bom_id ? -1 : ( m1->bom_id > m2->bom_id ? 1 : 0 ) );
  62 }
  63
  64 /*
  65  * Uses the pointer to the AttributeDescription structure
  66  */
  67 static int
  68 backsql_cmp_attr( const void *v_m1, const void *v_m2 )
  69 {
  70         const backsql_at_map_rec        *m1 = v_m1,
  71                                         *m2 = v_m2;
  72
  73 #ifdef BACKSQL_USE_PTR_CMP
  74         return SLAP_PTRCMP( m1->bam_ad, m2->bam_ad );
  75 #else /* ! BACKSQL_USE_PTR_CMP */
  76         return ber_bvcmp( &m1->bam_ad->ad_cname, &m2->bam_ad->ad_cname );
  77 #endif /* ! BACKSQL_USE_PTR_CMP */
  78 }
  79
  80 int
  81 backsql_dup_attr( void *v_m1, void *v_m2 )
  82 {
  83         backsql_at_map_rec              *m1 = v_m1,
  84                                         *m2 = v_m2;
  85
  86         assert( m1->bam_ad == m2->bam_ad );
  87
  88         /* duplicate definitions of attributeTypes are appended;
  89          * this allows to define multiple rules for the same
  90          * attributeType.  Use with care! */
  91         for ( ; m1->bam_next ; m1 = m1->bam_next );
  92         m1->bam_next = m2;
  93         m2->bam_next = NULL;
  94
  95         return BACKSQL_DUPLICATE;
  96 }
  97
  98 static int
  99 backsql_make_attr_query(
 100         backsql_oc_map_rec      *oc_map,
 101         backsql_at_map_rec      *at_map )
 102 {
 103         struct berbuf   bb = BB_NULL;
 104
 105 #ifdef BACKSQL_ALIASING_QUOTE
 106         backsql_strfcat( &bb, "lblcbclblbcbl",
 107                         (ber_len_t)STRLENOF( "SELECT " ), "SELECT ",
 108                         &at_map->bam_sel_expr,
 109                         (ber_len_t)STRLENOF( " " BACKSQL_ALIASING ), " " BACKSQL_ALIASING,
 110                         BACKSQL_ALIASING_QUOTE,
 111                         &at_map->bam_ad->ad_cname,
 112                         BACKSQL_ALIASING_QUOTE,
 113                         (ber_len_t)STRLENOF( " FROM " ), " FROM ",
 114                         &at_map->bam_from_tbls,
 115                         (ber_len_t)STRLENOF( " WHERE " ), " WHERE ",
 116                         &oc_map->bom_keytbl,
 117                         '.',
 118                         &oc_map->bom_keycol,
 119                         (ber_len_t)STRLENOF( "=?" ), "=?" );
 120 #else /* ! BACKSQL_ALIASING_QUOTE */
 121         backsql_strfcat( &bb, "lblblblbcbl",
 122                         (ber_len_t)STRLENOF( "SELECT " ), "SELECT ",
 123                         &at_map->bam_sel_expr,
 124                         (ber_len_t)STRLENOF( " " BACKSQL_ALIASING ), " " BACKSQL_ALIASING,
 125                         &at_map->bam_ad->ad_cname,
 126                         (ber_len_t)STRLENOF( " FROM " ), " FROM ",
 127                         &at_map->bam_from_tbls,
 128                         (ber_len_t)STRLENOF( " WHERE " ), " WHERE ",
 129                         &oc_map->bom_keytbl,
 130                         '.',
 131                         &oc_map->bom_keycol,
 132                         (ber_len_t)STRLENOF( "=?" ), "=?" );
 133 #endif /* ! BACKSQL_ALIASING_QUOTE */
 134
 135         if ( !BER_BVISNULL( &at_map->bam_join_where ) ) {
 136                 backsql_strfcat( &bb, "lb",
 137                                 (ber_len_t)STRLENOF( " AND " ), " AND ",
 138                                 &at_map->bam_join_where );
 139         }
 140
 141 #ifdef BACKSQL_ALIASING_QUOTE
 142         backsql_strfcat( &bb, "lcbc",
 143                         (ber_len_t)STRLENOF( " ORDER BY " ), " ORDER BY ",
 144                         BACKSQL_ALIASING_QUOTE,
 145                         &at_map->bam_sel_expr,
 146                         BACKSQL_ALIASING_QUOTE );
 147 #else /* ! BACKSQL_ALIASING_QUOTE */
 148         backsql_strfcat( &bb, "lb",
 149                         (ber_len_t)STRLENOF( " ORDER BY " ), " ORDER BY ",
 150                         &at_map->bam_sel_expr );
 151 #endif /* ! BACKSQL_ALIASING_QUOTE */
 152
 153         at_map->bam_query = bb.bb_val.bv_val;
 154
 155         return 0;
 156 }
 157
 158 static int
 159 backsql_add_sysmaps( backsql_oc_map_rec *oc_map )
 160 {
 161         backsql_at_map_rec      *at_map;
 162         char                    s[] = "+9223372036854775807L";
 163         struct berval           sbv;
 164         struct berbuf           bb;
 165
 166         sbv.bv_val = s;
 167         snprintf( s, sizeof( s ), "%ld", oc_map->bom_id );
 168         sbv.bv_len = strlen( s );
 169
 170         /* extra objectClasses */
 171         at_map = (backsql_at_map_rec *)ch_calloc(1,
 172                         sizeof( backsql_at_map_rec ) );
 173         at_map->bam_ad = slap_schema.si_ad_objectClass;
 174         ber_str2bv( "ldap_entry_objclasses.oc_name", 0, 1,
 175                         &at_map->bam_sel_expr );
 176         ber_str2bv( "ldap_entry_objclasses,ldap_entries", 0, 1,
 177                         &at_map->bam_from_tbls );
 178
 179         bb.bb_len = at_map->bam_from_tbls.bv_len + 1;
 180         bb.bb_val = at_map->bam_from_tbls;
 181         backsql_merge_from_clause( &bb, &oc_map->bom_keytbl );
 182         at_map->bam_from_tbls = bb.bb_val;
 183
 184         BER_BVZERO( &bb.bb_val );
 185         bb.bb_len = 0;
 186         backsql_strfcat( &bb, "lbcblb",
 187                         (ber_len_t)STRLENOF( "ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entries.keyval=" ),
 188                                 "ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entries.keyval=",
 189                         &oc_map->bom_keytbl,
 190                         '.',
 191                         &oc_map->bom_keycol,
 192                         (ber_len_t)STRLENOF( " and ldap_entries.oc_map_id=" ),
 193                                 " and ldap_entries.oc_map_id=",
 194                         &sbv );
 195         at_map->bam_join_where = bb.bb_val;
 196
 197         at_map->bam_oc = oc_map->bom_oc;
 198
 199         at_map->bam_add_proc = NULL;
 200         {
 201                 char    tmp[] =
 202                         "INSERT INTO ldap_entry_objclasses "
 203                         "(entry_id,oc_name) VALUES "
 204                         "((SELECT id FROM ldap_entries "
 205                         "WHERE oc_map_id="
 206                         "18446744073709551615UL "       /* 64 bit ULONG */
 207                         "AND keyval=?),?)";
 208                 snprintf( tmp, sizeof(tmp),
 209                         "INSERT INTO ldap_entry_objclasses "
 210                         "(entry_id,oc_name) VALUES "
 211                         "((SELECT id FROM ldap_entries "
 212                         "WHERE oc_map_id=%lu "
 213                         "AND keyval=?),?)", oc_map->bom_id );
 214                 at_map->bam_add_proc = ch_strdup( tmp );
 215         }
 216
 217         at_map->bam_delete_proc = NULL;
 218         {
 219                 char    tmp[] =
 220                         "DELETE FROM ldap_entry_objclasses "
 221                         "WHERE entry_id=(SELECT id FROM ldap_entries "
 222                         "WHERE oc_map_id="
 223                         "18446744073709551615UL "       /* 64 bit ULONG */
 224                         "AND keyval=?) AND oc_name=?";
 225                 snprintf( tmp, sizeof(tmp),
 226                         "DELETE FROM ldap_entry_objclasses "
 227                         "WHERE entry_id=(SELECT id FROM ldap_entries "
 228                         "WHERE oc_map_id=%lu"
 229                         "AND keyval=?) AND oc_name=?",
 230                         oc_map->bom_id );
 231                 at_map->bam_delete_proc = ch_strdup( tmp );
 232         }
 233
 234         at_map->bam_param_order = 0;
 235         at_map->bam_expect_return = 0;
 236         at_map->bam_next = NULL;
 237
 238         backsql_make_attr_query( oc_map, at_map );
 239         if ( avl_insert( &oc_map->bom_attrs, at_map, backsql_cmp_attr, backsql_dup_attr ) == BACKSQL_DUPLICATE ) {
 240                 Debug( LDAP_DEBUG_TRACE, "backsql_add_sysmaps(): "
 241                                 "duplicate attribute \"%s\" in objectClass \"%s\" map\n",
 242                                 at_map->bam_ad->ad_cname.bv_val,
 243                                 oc_map->bom_oc->soc_cname.bv_val, 0 );
 244         }
 245
 246         /* FIXME: we need to correct the objectClass join_where
 247          * after the attribute query is built */
 248         ch_free( at_map->bam_join_where.bv_val );
 249         BER_BVZERO( &bb.bb_val );
 250         bb.bb_len = 0;
 251         backsql_strfcat( &bb, "lbcblb",
 252                         (ber_len_t)STRLENOF( /* "ldap_entries.id=ldap_entry_objclasses.entry_id AND " */ "ldap_entries.keyval=" ),
 253                                 /* "ldap_entries.id=ldap_entry_objclasses.entry_id AND " */ "ldap_entries.keyval=",
 254                         &oc_map->bom_keytbl,
 255                         '.',
 256                         &oc_map->bom_keycol,
 257                         (ber_len_t)STRLENOF( " AND ldap_entries.oc_map_id=" ),
 258                                 " AND ldap_entries.oc_map_id=",
 259                         &sbv );
 260         at_map->bam_join_where = bb.bb_val;
 261
 262         /* referral attribute */
 263         at_map = (backsql_at_map_rec *)ch_calloc( 1,
 264                         sizeof( backsql_at_map_rec ) );
 265         at_map->bam_ad = slap_schema.si_ad_ref;
 266         ber_str2bv( "ldap_referrals.url", 0, 1, &at_map->bam_sel_expr );
 267         ber_str2bv( "ldap_referrals,ldap_entries", 0, 1, &at_map->bam_from_tbls );
 268
 269         bb.bb_len = at_map->bam_from_tbls.bv_len + 1;
 270         bb.bb_val = at_map->bam_from_tbls;
 271         backsql_merge_from_clause( &bb, &oc_map->bom_keytbl );
 272         at_map->bam_from_tbls = bb.bb_val;
 273
 274         BER_BVZERO( &bb.bb_val );
 275         bb.bb_len = 0;
 276         backsql_strfcat( &bb, "lbcblb",
 277                         (ber_len_t)STRLENOF( "ldap_entries.id=ldap_referrals.entry_id AND ldap_entries.keyval=" ),
 278                                 "ldap_entries.id=ldap_referrals.entry_id AND ldap_entries.keyval=",
 279                         &oc_map->bom_keytbl,
 280                         '.',
 281                         &oc_map->bom_keycol,
 282                         (ber_len_t)STRLENOF( " AND ldap_entries.oc_map_id=" ),
 283                                 " AND ldap_entries.oc_map_id=",
 284                         &sbv );
 285
 286         at_map->bam_join_where = bb.bb_val;
 287
 288         at_map->bam_oc = NULL;
 289
 290         at_map->bam_add_proc = NULL;
 291         {
 292                 char    tmp[] =
 293                         "INSERT INTO ldap_referrals "
 294                         "(entry_id,url) VALUES "
 295                         "((SELECT id FROM ldap_entries "
 296                         "WHERE oc_map_id="
 297                         "18446744073709551615UL "       /* 64 bit ULONG */
 298                         "AND keyval=?),?)";
 299                 snprintf( tmp, sizeof(tmp),
 300                         "INSERT INTO ldap_referrals "
 301                         "(entry_id,url) VALUES "
 302                         "((SELECT id FROM ldap_entries "
 303                         "WHERE oc_map_id=%lu "
 304                         "AND keyval=?),?)", oc_map->bom_id );
 305                 at_map->bam_add_proc = ch_strdup( tmp );
 306         }
 307
 308         at_map->bam_delete_proc = NULL;
 309         {
 310                 char    tmp[] =
 311                         "DELETE FROM ldap_referrals "
 312                         "WHERE entry_id=(SELECT id FROM ldap_entries "
 313                         "WHERE oc_map_id="
 314                         "18446744073709551615UL "       /* 64 bit ULONG */
 315                         "AND keyval=?) and url=?";
 316                 snprintf( tmp, sizeof(tmp),
 317                         "DELETE FROM ldap_referrals "
 318                         "WHERE entry_id=(SELECT id FROM ldap_entries "
 319                         "WHERE oc_map_id=%lu"
 320                         "AND keyval=?) and url=?",
 321                         oc_map->bom_id );
 322                 at_map->bam_delete_proc = ch_strdup( tmp );
 323         }
 324
 325         at_map->bam_param_order = 0;
 326         at_map->bam_expect_return = 0;
 327         at_map->bam_next = NULL;
 328
 329         backsql_make_attr_query( oc_map, at_map );
 330         if ( avl_insert( &oc_map->bom_attrs, at_map, backsql_cmp_attr, backsql_dup_attr ) == BACKSQL_DUPLICATE ) {
 331                 Debug( LDAP_DEBUG_TRACE, "backsql_add_sysmaps(): "
 332                                 "duplicate attribute \"%s\" in objectClass \"%s\" map\n",
 333                                 at_map->bam_ad->ad_cname.bv_val,
 334                                 oc_map->bom_oc->soc_cname.bv_val, 0 );
 335         }
 336
 337         return 1;
 338 }
 339
 340 struct backsql_attr_schema_info {
 341         backsql_info    *bas_bi;
 342         SQLHDBC         bas_dbh;
 343         SQLHSTMT        bas_sth;
 344         unsigned long   *bas_oc_id;
 345         int             bas_rc;
 346 };
 347
 348 static int
 349 backsql_oc_get_attr_mapping( void *v_oc, void *v_bas )
 350 {
 351         RETCODE                         rc;
 352         BACKSQL_ROW_NTS                 at_row;
 353         backsql_oc_map_rec              *oc_map = (backsql_oc_map_rec *)v_oc;
 354         backsql_at_map_rec              *at_map;
 355         struct backsql_attr_schema_info *bas = (struct backsql_attr_schema_info *)v_bas;
 356
 357         /* bas->bas_oc_id has been bound to bas->bas_sth */
 358         *bas->bas_oc_id = oc_map->bom_id;
 359
 360         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_attr_mapping(): "
 361                 "executing at_query\n"
 362                 "    \"%s\"\n"
 363                 "    for objectClass \"%s\"\n"
 364                 "    with param oc_id=\"%lu\"\n",
 365                 bas->bas_bi->sql_at_query,
 366                 BACKSQL_OC_NAME( oc_map ),
 367                 *bas->bas_oc_id );
 368
 369         rc = SQLExecute( bas->bas_sth );
 370         if ( rc != SQL_SUCCESS ) {
 371                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_attr_mapping(): "
 372                         "error executing at_query\n"
 373                         "    \"%s\"\n"
 374                         "    for objectClass \"%s\"\n"
 375                         "    with param oc_id=\"%lu\"\n",
 376                         bas->bas_bi->sql_at_query,
 377                         BACKSQL_OC_NAME( oc_map ),
 378                         *bas->bas_oc_id );
 379                 backsql_PrintErrors( bas->bas_bi->sql_db_env,
 380                                 bas->bas_dbh, bas->bas_sth, rc );
 381                 bas->bas_rc = LDAP_OTHER;
 382                 return BACKSQL_AVL_STOP;
 383         }
 384
 385         backsql_BindRowAsStrings( bas->bas_sth, &at_row );
 386         for ( ; rc = SQLFetch( bas->bas_sth ), BACKSQL_SUCCESS( rc ); ) {
 387                 const char      *text = NULL;
 388                 struct berval   bv;
 389                 struct berbuf   bb = BB_NULL;
 390
 391                 Debug( LDAP_DEBUG_TRACE,
 392                         "attributeType:\n"
 393                         "\tname=\"%s\"\n"
 394                         "\tsel_expr=\"%s\"\n"
 395                         "\tfrom=\"%s\"\n",
 396                         at_row.cols[ 0 ], at_row.cols[ 1 ],
 397                         at_row.cols[ 2 ] );
 398                 Debug( LDAP_DEBUG_TRACE,
 399                         "\tjoin_where=\"%s\"\n"
 400                         "\tadd_proc=\"%s\"\n"
 401                         "\tdelete_proc=\"%s\"\n",
 402                         at_row.cols[ 3 ], at_row.cols[ 4 ],
 403                         at_row.cols[ 5 ]);
 404                 /* TimesTen */
 405                 Debug( LDAP_DEBUG_TRACE, "\tsel_expr_u=\"%s\"\n",
 406                                 at_row.cols[ 8 ], 0, 0 );
 407                 at_map = (backsql_at_map_rec *)ch_calloc( 1,
 408                                 sizeof( backsql_at_map_rec ) );
 409                 rc = slap_str2ad( at_row.cols[ 0 ],
 410                                 &at_map->bam_ad, &text );
 411                 if ( rc != LDAP_SUCCESS ) {
 412                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_attr_mapping(): "
 413                                 "attribute \"%s\" for objectClass \"%s\" "
 414                                 "is not defined in schema: %s\n",
 415                                 at_row.cols[ 0 ],
 416                                 BACKSQL_OC_NAME( oc_map ), text );
 417                         bas->bas_rc = LDAP_CONSTRAINT_VIOLATION;
 418                         return BACKSQL_AVL_STOP;
 419                 }
 420
 421                 ber_str2bv( at_row.cols[ 1 ], 0, 1, &at_map->bam_sel_expr );
 422                 if ( at_row.value_len[ 8 ] < 0 ) {
 423                         BER_BVZERO( &at_map->bam_sel_expr_u );
 424
 425                 } else {
 426                         ber_str2bv( at_row.cols[ 8 ], 0, 1,
 427                                         &at_map->bam_sel_expr_u );
 428                 }
 429
 430                 ber_str2bv( at_row.cols[ 2 ], 0, 0, &bv );
 431                 backsql_merge_from_clause( &bb, &bv );
 432                 at_map->bam_from_tbls = bb.bb_val;
 433                 if ( at_row.value_len[ 3 ] < 0 ) {
 434                         BER_BVZERO( &at_map->bam_join_where );
 435
 436                 } else {
 437                         ber_str2bv( at_row.cols[ 3 ], 0, 1,
 438                                         &at_map->bam_join_where );
 439                 }
 440                 at_map->bam_add_proc = NULL;
 441                 if ( at_row.value_len[ 4 ] > 0 ) {
 442                         at_map->bam_add_proc = ch_strdup( at_row.cols[4] );
 443                 }
 444                 at_map->bam_delete_proc = NULL;
 445                 if ( at_row.value_len[ 5 ] > 0 ) {
 446                         at_map->bam_delete_proc = ch_strdup( at_row.cols[ 5 ] );
 447                 }
 448                 at_map->bam_param_order = strtol( at_row.cols[ 6 ],
 449                                 NULL, 0 );
 450                 at_map->bam_expect_return = strtol( at_row.cols[ 7 ],
 451                                 NULL, 0 );
 452                 backsql_make_attr_query( oc_map, at_map );
 453                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_attr_mapping(): "
 454                         "preconstructed query \"%s\"\n",
 455                         at_map->bam_query, 0, 0 );
 456                 at_map->bam_next = NULL;
 457                 if ( avl_insert( &oc_map->bom_attrs, at_map, backsql_cmp_attr, backsql_dup_attr ) == BACKSQL_DUPLICATE ) {
 458                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_attr_mapping(): "
 459                                         "duplicate attribute \"%s\" "
 460                                         "in objectClass \"%s\" map\n",
 461                                         at_map->bam_ad->ad_cname.bv_val,
 462                                         oc_map->bom_oc->soc_cname.bv_val, 0 );
 463                 }
 464
 465                 if ( !BER_BVISNULL( &bas->bas_bi->sql_upper_func ) &&
 466                                 BER_BVISNULL( &at_map->bam_sel_expr_u ) )
 467                 {
 468                         struct berbuf   bb = BB_NULL;
 469
 470                         backsql_strfcat( &bb, "bcbc",
 471                                         &bas->bas_bi->sql_upper_func,
 472                                         '(' /* ) */ ,
 473                                         &at_map->bam_sel_expr,
 474                                         /* ( */ ')' );
 475                         at_map->bam_sel_expr_u = bb.bb_val;
 476                 }
 477         }
 478         backsql_FreeRow( &at_row );
 479         SQLFreeStmt( bas->bas_sth, SQL_CLOSE );
 480
 481         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(\"%s\"): "
 482                 "autoadding 'objectClass' and 'ref' mappings\n",
 483                 BACKSQL_OC_NAME( oc_map ), 0, 0 );
 484
 485         (void)backsql_add_sysmaps( oc_map );
 486
 487         return BACKSQL_AVL_CONTINUE;
 488 }
 489
 490
 491 int
 492 backsql_load_schema_map( backsql_info *bi, SQLHDBC dbh )
 493 {
 494         SQLHSTMT                        sth;
 495         RETCODE                         rc;
 496         BACKSQL_ROW_NTS                 oc_row;
 497         unsigned long                   oc_id;
 498         backsql_oc_map_rec              *oc_map;
 499         struct backsql_attr_schema_info bas;
 500
 501         Debug( LDAP_DEBUG_TRACE, "==>backsql_load_schema_map()\n", 0, 0, 0 );
 502
 503         /*
 504          * TimesTen : See if the ldap_entries.dn_ru field exists in the schema
 505          */
 506         if ( !BACKSQL_DONTCHECK_LDAPINFO_DN_RU( bi ) ) {
 507                 rc = backsql_Prepare( dbh, &sth,
 508                                 backsql_check_dn_ru_query, 0 );
 509                 if ( rc == SQL_SUCCESS ) {
 510                         /* Yes, the field exists */
 511                         bi->sql_flags |= BSQLF_HAS_LDAPINFO_DN_RU;
 512                         Debug( LDAP_DEBUG_TRACE, "ldapinfo.dn_ru field exists "
 513                                 "in the schema\n", 0, 0, 0 );
 514                 } else {
 515                         /* No such field exists */
 516                         bi->sql_flags &= ~BSQLF_HAS_LDAPINFO_DN_RU;
 517                 }
 518
 519                 SQLFreeStmt( sth, SQL_DROP );
 520         }
 521
 522         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): oc_query \"%s\"\n",
 523                         bi->sql_oc_query, 0, 0 );
 524
 525         rc = backsql_Prepare( dbh, &sth, bi->sql_oc_query, 0 );
 526         if ( rc != SQL_SUCCESS ) {
 527                 Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 528                         "error preparing oc_query: \"%s\"\n",
 529                         bi->sql_oc_query, 0, 0 );
 530                 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc );
 531                 return LDAP_OTHER;
 532         }
 533
 534         rc = SQLExecute( sth );
 535         if ( rc != SQL_SUCCESS ) {
 536                 Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 537                         "error executing oc_query: \n", 0, 0, 0 );
 538                 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc );
 539                 return LDAP_OTHER;
 540         }
 541
 542         backsql_BindRowAsStrings( sth, &oc_row );
 543         rc = SQLFetch( sth );
 544         for ( ; BACKSQL_SUCCESS( rc ); rc = SQLFetch( sth ) ) {
 545                 int     colnum;
 546
 547                 oc_map = (backsql_oc_map_rec *)ch_calloc( 1,
 548                                 sizeof( backsql_oc_map_rec ) );
 549
 550                 oc_map->bom_id = strtol( oc_row.cols[ 0 ], NULL, 0 );
 551
 552                 oc_map->bom_oc = oc_find( oc_row.cols[ 1 ] );
 553                 if ( oc_map->bom_oc == NULL ) {
 554                         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 555                                 "objectClass \"%s\" is not defined in schema\n",
 556                                 oc_row.cols[ 1 ], 0, 0 );
 557                         return LDAP_OTHER;      /* undefined objectClass ? */
 558                 }
 559
 560                 ber_str2bv( oc_row.cols[ 2 ], 0, 1, &oc_map->bom_keytbl );
 561                 ber_str2bv( oc_row.cols[ 3 ], 0, 1, &oc_map->bom_keycol );
 562                 oc_map->bom_create_proc = ( oc_row.value_len[ 4 ] < 0 ) ? NULL
 563                         : ch_strdup( oc_row.cols[ 4 ] );
 564
 565                 colnum = 5;
 566                 if ( BACKSQL_CREATE_NEEDS_SELECT( bi ) ) {
 567                         colnum = 6;
 568                         oc_map->bom_create_keyval = ( oc_row.value_len[ 5 ] < 0 )
 569                                 ? NULL : ch_strdup( oc_row.cols[ 5 ] );
 570                 }
 571                 oc_map->bom_delete_proc = ( oc_row.value_len[ colnum ] < 0 ) ? NULL
 572                         : ch_strdup( oc_row.cols[ colnum ] );
 573                 oc_map->bom_expect_return = strtol( oc_row.cols[ colnum + 1 ],
 574                                 NULL, 0 );
 575
 576                 /*
 577                  * FIXME: first attempt to check for offending
 578                  * instructions in {create|delete}_proc
 579                  */
 580
 581                 oc_map->bom_attrs = NULL;
 582                 if ( avl_insert( &bi->sql_oc_by_oc, oc_map, backsql_cmp_oc, avl_dup_error ) == -1 ) {
 583                         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 584                                         "duplicate objectClass \"%s\" in objectClass map\n",
 585                                         oc_map->bom_oc->soc_cname.bv_val, 0, 0 );
 586                         return LDAP_OTHER;
 587                 }
 588                 if ( avl_insert( &bi->sql_oc_by_id, oc_map, backsql_cmp_oc_id, avl_dup_error ) == -1 ) {
 589                         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 590                                         "duplicate objectClass \"%s\" in objectClass by ID map\n",
 591                                         oc_map->bom_oc->soc_cname.bv_val, 0, 0 );
 592                         return LDAP_OTHER;
 593                 }
 594                 oc_id = oc_map->bom_id;
 595                 Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 596                         "objectClass \"%s\": keytbl=\"%s\" keycol=\"%s\"\n",
 597                         BACKSQL_OC_NAME( oc_map ),
 598                         oc_map->bom_keytbl.bv_val, oc_map->bom_keycol.bv_val );
 599                 if ( oc_map->bom_create_proc ) {
 600                         Debug( LDAP_DEBUG_TRACE, "create_proc=\"%s\"\n",
 601                                 oc_map->bom_create_proc, 0, 0 );
 602                 }
 603                 if ( oc_map->bom_create_keyval ) {
 604                         Debug( LDAP_DEBUG_TRACE, "create_keyval=\"%s\"\n",
 605                                 oc_map->bom_create_keyval, 0, 0 );
 606                 }
 607                 if ( oc_map->bom_delete_proc ) {
 608                         Debug( LDAP_DEBUG_TRACE, "delete_proc=\"%s\"\n",
 609                                 oc_map->bom_delete_proc, 0, 0 );
 610                 }
 611                 Debug( LDAP_DEBUG_TRACE, "expect_return: "
 612                         "add=%d, del=%d; attributes:\n",
 613                         BACKSQL_IS_ADD( oc_map->bom_expect_return ),
 614                         BACKSQL_IS_DEL( oc_map->bom_expect_return ), 0 );
 615         }
 616
 617         backsql_FreeRow( &oc_row );
 618         SQLFreeStmt( sth, SQL_DROP );
 619
 620         /* prepare for attribute fetching */
 621         Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): at_query \"%s\"\n",
 622                         bi->sql_at_query, 0, 0 );
 623
 624         rc = backsql_Prepare( dbh, &sth, bi->sql_at_query, 0 );
 625         if ( rc != SQL_SUCCESS ) {
 626                 Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 627                         "error preparing at_query: \"%s\"\n",
 628                         bi->sql_at_query, 0, 0 );
 629                 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc );
 630                 return LDAP_OTHER;
 631         }
 632
 633         rc = backsql_BindParamInt( sth, 1, SQL_PARAM_INPUT, &oc_id );
 634         if ( rc != SQL_SUCCESS ) {
 635                 Debug( LDAP_DEBUG_TRACE, "backsql_load_schema_map(): "
 636                         "error binding param \"oc_id\" for at_query\n", 0, 0, 0 );
 637                 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc );
 638                 SQLFreeStmt( sth, SQL_DROP );
 639                 return LDAP_OTHER;
 640         }
 641
 642         bas.bas_bi = bi;
 643         bas.bas_dbh = dbh;
 644         bas.bas_sth = sth;
 645         bas.bas_oc_id = &oc_id;
 646         bas.bas_rc = LDAP_SUCCESS;
 647
 648         (void)avl_apply( bi->sql_oc_by_oc, backsql_oc_get_attr_mapping,
 649                         &bas, BACKSQL_AVL_STOP, AVL_INORDER );
 650
 651         SQLFreeStmt( sth, SQL_DROP );
 652
 653         bi->sql_flags |= BSQLF_SCHEMA_LOADED;
 654
 655         Debug( LDAP_DEBUG_TRACE, "<==backsql_load_schema_map()\n", 0, 0, 0 );
 656
 657         return bas.bas_rc;
 658 }
 659
 660 backsql_oc_map_rec *
 661 backsql_oc2oc( backsql_info *bi, ObjectClass *oc )
 662 {
 663         backsql_oc_map_rec      tmp, *res;
 664
 665 #ifdef BACKSQL_TRACE
 666         Debug( LDAP_DEBUG_TRACE, "==>backsql_oc2oc(): "
 667                 "searching for objectclass with name=\"%s\"\n",
 668                 oc->soc_cname.bv_val, 0, 0 );
 669 #endif /* BACKSQL_TRACE */
 670
 671         tmp.bom_oc = oc;
 672         res = (backsql_oc_map_rec *)avl_find( bi->sql_oc_by_oc, &tmp, backsql_cmp_oc );
 673 #ifdef BACKSQL_TRACE
 674         if ( res != NULL ) {
 675                 Debug( LDAP_DEBUG_TRACE, "<==backsql_oc2oc(): "
 676                         "found name=\"%s\", id=%d\n",
 677                         BACKSQL_OC_NAME( res ), res->bom_id, 0 );
 678         } else {
 679                 Debug( LDAP_DEBUG_TRACE, "<==backsql_oc2oc(): "
 680                         "not found\n", 0, 0, 0 );
 681         }
 682 #endif /* BACKSQL_TRACE */
 683
 684         return res;
 685 }
 686
 687 backsql_oc_map_rec *
 688 backsql_name2oc( backsql_info *bi, struct berval *oc_name )
 689 {
 690         backsql_oc_map_rec      tmp, *res;
 691
 692 #ifdef BACKSQL_TRACE
 693         Debug( LDAP_DEBUG_TRACE, "==>oc_with_name(): "
 694                 "searching for objectclass with name=\"%s\"\n",
 695                 oc_name->bv_val, 0, 0 );
 696 #endif /* BACKSQL_TRACE */
 697
 698         tmp.bom_oc = oc_bvfind( oc_name );
 699         if ( tmp.bom_oc == NULL ) {
 700                 return NULL;
 701         }
 702
 703         res = (backsql_oc_map_rec *)avl_find( bi->sql_oc_by_oc, &tmp, backsql_cmp_oc );
 704 #ifdef BACKSQL_TRACE
 705         if ( res != NULL ) {
 706                 Debug( LDAP_DEBUG_TRACE, "<==oc_with_name(): "
 707                         "found name=\"%s\", id=%d\n",
 708                         BACKSQL_OC_NAME( res ), res->bom_id, 0 );
 709         } else {
 710                 Debug( LDAP_DEBUG_TRACE, "<==oc_with_name(): "
 711                         "not found\n", 0, 0, 0 );
 712         }
 713 #endif /* BACKSQL_TRACE */
 714
 715         return res;
 716 }
 717
 718 backsql_oc_map_rec *
 719 backsql_id2oc( backsql_info *bi, unsigned long id )
 720 {
 721         backsql_oc_map_rec      tmp, *res;
 722
 723 #ifdef BACKSQL_TRACE
 724         Debug( LDAP_DEBUG_TRACE, "==>oc_with_id(): "
 725                 "searching for objectclass with id='%d'\n", id, 0, 0 );
 726 #endif /* BACKSQL_TRACE */
 727
 728         tmp.bom_id = id;
 729         res = (backsql_oc_map_rec *)avl_find( bi->sql_oc_by_id, &tmp,
 730                         backsql_cmp_oc_id );
 731
 732 #ifdef BACKSQL_TRACE
 733         if ( res != NULL ) {
 734                 Debug( LDAP_DEBUG_TRACE, "<==oc_with_name(): "
 735                         "found name=\"%s\", id=%d\n",
 736                         BACKSQL_OC_NAME( res ), res->bom_id, 0 );
 737         } else {
 738                 Debug( LDAP_DEBUG_TRACE, "<==oc_with_name(): "
 739                         "not found\n", 0, 0, 0 );
 740         }
 741 #endif /* BACKSQL_TRACE */
 742
 743         return res;
 744 }
 745
 746 backsql_at_map_rec *
 747 backsql_ad2at( backsql_oc_map_rec* objclass, AttributeDescription *ad )
 748 {
 749         backsql_at_map_rec      tmp, *res;
 750
 751 #ifdef BACKSQL_TRACE
 752         Debug( LDAP_DEBUG_TRACE, "==>backsql_ad2at(): "
 753                 "searching for attribute \"%s\" for objectclass \"%s\"\n",
 754                 ad->ad_cname.bv_val, BACKSQL_OC_NAME( objclass ), 0 );
 755 #endif /* BACKSQL_TRACE */
 756
 757         tmp.bam_ad = ad;
 758         res = (backsql_at_map_rec *)avl_find( objclass->bom_attrs, &tmp,
 759                         backsql_cmp_attr );
 760
 761 #ifdef BACKSQL_TRACE
 762         if ( res != NULL ) {
 763                 Debug( LDAP_DEBUG_TRACE, "<==backsql_ad2at(): "
 764                         "found name=\"%s\", sel_expr=\"%s\"\n",
 765                         res->bam_ad->ad_cname.bv_val,
 766                         res->bam_sel_expr.bv_val, 0 );
 767         } else {
 768                 Debug( LDAP_DEBUG_TRACE, "<==backsql_ad2at(): "
 769                         "not found\n", 0, 0, 0 );
 770         }
 771 #endif /* BACKSQL_TRACE */
 772
 773         return res;
 774 }
 775
 776 /* attributeType inheritance */
 777 struct supad2at_t {
 778         backsql_at_map_rec      **ret;
 779         AttributeDescription    *ad;
 780         unsigned                n;
 781 };
 782
 783 #define SUPAD2AT_STOP   (-1)
 784
 785 static int
 786 supad2at_f( void *v_at, void *v_arg )
 787 {
 788         backsql_at_map_rec      *at = (backsql_at_map_rec *)v_at;
 789         struct supad2at_t       *va = (struct supad2at_t *)v_arg;
 790
 791         if ( is_at_subtype( at->bam_ad->ad_type, va->ad->ad_type ) ) {
 792                 backsql_at_map_rec      **ret;
 793                 unsigned                i;
 794
 795                 /* if already listed, holler! (should never happen) */
 796                 if ( va->ret ) {
 797                         for ( i = 0; i < va->n; i++ ) {
 798                                 if ( va->ret[ i ]->bam_ad == at->bam_ad ) {
 799                                         break;
 800                                 }
 801                         }
 802
 803                         if ( i < va->n ) {
 804                                 return 0;
 805                         }
 806                 }
 807
 808                 ret = ch_realloc( va->ret,
 809                                 sizeof( backsql_at_map_rec *) * ( va->n + 2 ) );
 810                 if ( ret == NULL ) {
 811                         ch_free( va->ret );
 812                         return SUPAD2AT_STOP;
 813                 }
 814
 815                 ret[ va->n ] = at;
 816                 va->n++;
 817                 ret[ va->n ] = NULL;
 818                 va->ret = ret;
 819         }
 820
 821         return 0;
 822 }
 823
 824 /*
 825  * stores in *pret a NULL terminated array of pointers
 826  * to backsql_at_map_rec whose attributeType is supad->ad_type
 827  * or derived from it
 828  */
 829 int
 830 backsql_supad2at( backsql_oc_map_rec *objclass, AttributeDescription *supad,
 831                 backsql_at_map_rec ***pret )
 832 {
 833         struct supad2at_t       va;
 834         int                     rc;
 835
 836         assert( objclass );
 837         assert( supad );
 838         assert( pret );
 839
 840         *pret = NULL;
 841
 842         va.ret = NULL;
 843         va.ad = supad;
 844         va.n = 0;
 845
 846         rc = avl_apply( objclass->bom_attrs, supad2at_f, &va,
 847                         SUPAD2AT_STOP, AVL_INORDER );
 848         if ( rc == SUPAD2AT_STOP ) {
 849                 return -1;
 850         }
 851
 852         *pret = va.ret;
 853
 854         return 0;
 855 }
 856
 857 static void
 858 backsql_free_attr( void *v_at )
 859 {
 860         backsql_at_map_rec      *at = v_at;
 861
 862         Debug( LDAP_DEBUG_TRACE, "==>free_attr(): \"%s\"\n",
 863                         at->bam_ad->ad_cname.bv_val, 0, 0 );
 864         ch_free( at->bam_sel_expr.bv_val );
 865         if ( !BER_BVISNULL( &at->bam_from_tbls ) ) {
 866                 ch_free( at->bam_from_tbls.bv_val );
 867         }
 868         if ( !BER_BVISNULL( &at->bam_join_where ) ) {
 869                 ch_free( at->bam_join_where.bv_val );
 870         }
 871         if ( at->bam_add_proc != NULL ) {
 872                 ch_free( at->bam_add_proc );
 873         }
 874         if ( at->bam_delete_proc != NULL ) {
 875                 ch_free( at->bam_delete_proc );
 876         }
 877         if ( at->bam_query ) {
 878                 ch_free( at->bam_query );
 879         }
 880
 881         /* TimesTen */
 882         if ( !BER_BVISNULL( &at->bam_sel_expr_u ) ) {
 883                 ch_free( at->bam_sel_expr_u.bv_val );
 884         }
 885
 886         if ( at->bam_next ) {
 887                 backsql_free_attr( at->bam_next );
 888         }
 889
 890         ch_free( at );
 891
 892         Debug( LDAP_DEBUG_TRACE, "<==free_attr()\n", 0, 0, 0 );
 893 }
 894
 895 static void
 896 backsql_free_oc( void *v_oc )
 897 {
 898         backsql_oc_map_rec      *oc = v_oc;
 899
 900         Debug( LDAP_DEBUG_TRACE, "==>free_oc(): \"%s\"\n",
 901                         BACKSQL_OC_NAME( oc ), 0, 0 );
 902         avl_free( oc->bom_attrs, backsql_free_attr );
 903         ch_free( oc->bom_keytbl.bv_val );
 904         ch_free( oc->bom_keycol.bv_val );
 905         if ( oc->bom_create_proc != NULL ) {
 906                 ch_free( oc->bom_create_proc );
 907         }
 908         if ( oc->bom_create_keyval != NULL ) {
 909                 ch_free( oc->bom_create_keyval );
 910         }
 911         if ( oc->bom_delete_proc != NULL ) {
 912                 ch_free( oc->bom_delete_proc );
 913         }
 914         ch_free( oc );
 915
 916         Debug( LDAP_DEBUG_TRACE, "<==free_oc()\n", 0, 0, 0 );
 917 }
 918
 919 int
 920 backsql_destroy_schema_map( backsql_info *bi )
 921 {
 922         Debug( LDAP_DEBUG_TRACE, "==>destroy_schema_map()\n", 0, 0, 0 );
 923         avl_free( bi->sql_oc_by_oc, 0 );
 924         avl_free( bi->sql_oc_by_id, backsql_free_oc );
 925         Debug( LDAP_DEBUG_TRACE, "<==destroy_schema_map()\n", 0, 0, 0 );
 926         return 0;
 927 }
 928