git.sur5r.net Git - openldap/blob - servers/slapd/back-sql/init.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 #ifdef SLAPD_SQL
  24
  25 #include <stdio.h>
  26 #include <sys/types.h>
  27
  28 #include "slap.h"
  29 #include "ldap_pvt.h"
  30 #include "proto-sql.h"
  31
  32 #if SLAPD_SQL == SLAPD_MOD_DYNAMIC
  33
  34 int
  35 init_module(
  36         int             argc,
  37         char            *argv[] )
  38 {
  39         BackendInfo bi;
  40
  41         memset( &bi, '\0', sizeof( bi ) );
  42         bi.bi_type = "sql";
  43         bi.bi_init = sql_back_initialize;
  44
  45         backend_add( &bi );
  46         return 0;
  47 }
  48
  49 #endif /* SLAPD_SQL */
  50
  51 int
  52 sql_back_initialize(
  53         BackendInfo     *bi )
  54 {
  55         static char *controls[] = {
  56 #if 0 /* needs updating */
  57 #ifdef LDAP_CONTROL_NOOP
  58                 LDAP_CONTROL_NOOP,
  59 #endif /* LDAP_CONTROL_NOOP */
  60 #endif
  61 #ifdef LDAP_CONTROL_VALUESRETURNFILTER
  62                 LDAP_CONTROL_VALUESRETURNFILTER,
  63 #endif /* LDAP_CONTROL_VALUESRETURNFILTER */
  64                 NULL
  65         };
  66
  67         bi->bi_controls = controls;
  68
  69         Debug( LDAP_DEBUG_TRACE,"==>backsql_initialize()\n", 0, 0, 0 );
  70
  71         bi->bi_open = 0;
  72         bi->bi_config = 0;
  73         bi->bi_close = 0;
  74         bi->bi_destroy = 0;
  75
  76         bi->bi_db_init = backsql_db_init;
  77         bi->bi_db_config = backsql_db_config;
  78         bi->bi_db_open = backsql_db_open;
  79         bi->bi_db_close = backsql_db_close;
  80         bi->bi_db_destroy = backsql_db_destroy;
  81
  82         bi->bi_op_abandon = 0;
  83         bi->bi_op_compare = backsql_compare;
  84         bi->bi_op_bind = backsql_bind;
  85         bi->bi_op_unbind = 0;
  86         bi->bi_op_search = backsql_search;
  87         bi->bi_op_modify = backsql_modify;
  88         bi->bi_op_modrdn = backsql_modrdn;
  89         bi->bi_op_add = backsql_add;
  90         bi->bi_op_delete = backsql_delete;
  91
  92         bi->bi_chk_referrals = 0;
  93         bi->bi_operational = backsql_operational;
  94
  95         bi->bi_connection_init = 0;
  96         bi->bi_connection_destroy = backsql_connection_destroy;
  97
  98         Debug( LDAP_DEBUG_TRACE,"<==backsql_initialize()\n", 0, 0, 0 );
  99         return 0;
 100 }
 101
 102
 103 int
 104 backsql_destroy(
 105         BackendInfo     *bi )
 106 {
 107         Debug( LDAP_DEBUG_TRACE, "==>backsql_destroy()\n", 0, 0, 0 );
 108         Debug( LDAP_DEBUG_TRACE, "<==backsql_destroy()\n", 0, 0, 0 );
 109         return 0;
 110 }
 111
 112 int
 113 backsql_db_init(
 114         BackendDB       *bd )
 115 {
 116         backsql_info *si;
 117
 118         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_init()\n", 0, 0, 0 );
 119         si = (backsql_info *)ch_calloc( 1, sizeof( backsql_info ) );
 120         memset( si, '\0', sizeof( backsql_info ) );
 121         ldap_pvt_thread_mutex_init( &si->dbconn_mutex );
 122         ldap_pvt_thread_mutex_init( &si->schema_mutex );
 123         backsql_init_db_env( si );
 124
 125         bd->be_private = si;
 126         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_init()\n", 0, 0, 0 );
 127         return 0;
 128 }
 129
 130 int
 131 backsql_db_destroy(
 132         BackendDB       *bd )
 133 {
 134         backsql_info *si = (backsql_info*)bd->be_private;
 135
 136         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_destroy()\n", 0, 0, 0 );
 137         ldap_pvt_thread_mutex_lock( &si->dbconn_mutex );
 138         backsql_free_db_env( si );
 139         ldap_pvt_thread_mutex_unlock( &si->dbconn_mutex );
 140         ldap_pvt_thread_mutex_destroy( &si->dbconn_mutex );
 141         ldap_pvt_thread_mutex_lock( &si->schema_mutex );
 142         backsql_destroy_schema_map( si );
 143         ldap_pvt_thread_mutex_unlock( &si->schema_mutex );
 144         ldap_pvt_thread_mutex_destroy( &si->schema_mutex );
 145         free( si->dbname );
 146         free( si->dbuser );
 147         if ( si->dbpasswd ) {
 148                 free( si->dbpasswd );
 149         }
 150         if ( si->dbhost ) {
 151                 free( si->dbhost );
 152         }
 153         if ( si->upper_func.bv_val ) {
 154                 free( si->upper_func.bv_val );
 155                 free( si->upper_func_open.bv_val );
 156                 free( si->upper_func_close.bv_val );
 157         }
 158
 159         free( si->subtree_cond.bv_val );
 160         free( si->oc_query );
 161         free( si->at_query );
 162         free( si->insentry_query );
 163         free( si->delentry_query );
 164         free( si );
 165
 166         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_destroy()\n", 0, 0, 0 );
 167         return 0;
 168 }
 169
 170 int
 171 backsql_db_open(
 172         BackendDB       *bd )
 173 {
 174         backsql_info    *si = (backsql_info*)bd->be_private;
 175         SQLHDBC         dbh;
 176         ber_len_t       idq_len;
 177         struct berbuf   bb = BB_NULL;
 178
 179         Operation       otmp;
 180
 181         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_open(): "
 182                 "testing RDBMS connection\n", 0, 0, 0 );
 183         if ( si->dbname == NULL ) {
 184                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 185                         "datasource name not specified "
 186                         "(use \"dbname\" directive in slapd.conf)\n", 0, 0, 0 );
 187                 return 1;
 188         }
 189
 190         if ( si->concat_func == NULL ) {
 191                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 192                         "concat func not specified (use \"concat_pattern\" "
 193                         "directive in slapd.conf)\n", 0, 0, 0 );
 194
 195                 if ( backsql_split_pattern( backsql_def_concat_func,
 196                                 &si->concat_func, 2 ) ) {
 197                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 198                                 "unable to parse pattern '%s'",
 199                                 backsql_def_concat_func, 0, 0 );
 200                         return 1;
 201                 }
 202         }
 203
 204         /*
 205          * Prepare cast string as required
 206          */
 207         if ( si->upper_func.bv_val ) {
 208                 char buf[1024];
 209
 210                 if ( BACKSQL_UPPER_NEEDS_CAST( si ) ) {
 211                         snprintf( buf, sizeof( buf ),
 212                                 "%s(cast (" /* ? as varchar(%d))) */ ,
 213                                 si->upper_func.bv_val );
 214                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 215
 216                         snprintf( buf, sizeof( buf ),
 217                                 /* (cast(? */ " as varchar(%d)))",
 218                                 BACKSQL_MAX_DN_LEN );
 219                         ber_str2bv( buf, 0, 1, &si->upper_func_close );
 220
 221                 } else {
 222                         snprintf( buf, sizeof( buf ), "%s(" /* ?) */ ,
 223                                         si->upper_func.bv_val );
 224                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 225
 226                         ber_str2bv( /* (? */ ")", 0, 1, &si->upper_func_close );
 227                 }
 228         }
 229
 230         /* normalize filter values only if necessary */
 231         si->bi_caseIgnoreMatch = mr_find( "caseIgnoreMatch" );
 232
 233         if ( si->dbuser == NULL ) {
 234                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 235                         "user name not specified "
 236                         "(use \"dbuser\" directive in slapd.conf)\n", 0, 0, 0 );
 237                 return 1;
 238         }
 239
 240         if ( si->subtree_cond.bv_val == NULL ) {
 241                 /*
 242                  * Prepare concat function for subtree search condition
 243                  */
 244                 struct berval   concat;
 245                 struct berval   values[] = {
 246                         { sizeof( "'%'" ) - 1,  "'%'" },
 247                         { sizeof( "?" ) - 1,    "?" },
 248                         { 0,                    NULL }
 249                 };
 250                 struct berbuf   bb = BB_NULL;
 251
 252                 if ( backsql_prepare_pattern( si->concat_func, values,
 253                                 &concat ) ) {
 254                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 255                                 "unable to prepare CONCAT pattern", 0, 0, 0 );
 256                         return 1;
 257                 }
 258
 259                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 260                         "subtree search SQL condition not specified "
 261                         "(use \"subtree_cond\" directive in slapd.conf)\n",
 262                         0, 0, 0);
 263
 264                 if ( si->upper_func.bv_val ) {
 265
 266                         /*
 267                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%',?))
 268                          */
 269
 270                         backsql_strfcat( &bb, "blbbb",
 271                                         &si->upper_func,
 272                                         (ber_len_t)sizeof( "(ldap_entries.dn) LIKE " ) - 1,
 273                                                 "(ldap_entries.dn) LIKE ",
 274                                         &si->upper_func_open,
 275                                         &concat,
 276                                         &si->upper_func_close );
 277
 278                 } else {
 279
 280                         /*
 281                          * ldap_entries.dn LIKE CONCAT('%',?)
 282                          */
 283
 284                         backsql_strfcat( &bb, "lb",
 285                                         (ber_len_t)sizeof( "ldap_entries.dn LIKE " ) - 1,
 286                                                 "ldap_entries.dn LIKE ",
 287                                         &concat );
 288                 }
 289
 290                 si->subtree_cond = bb.bb_val;
 291
 292                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 293                         "setting '%s' as default\n",
 294                         si->subtree_cond.bv_val, 0, 0 );
 295         }
 296
 297         if ( si->children_cond.bv_val == NULL ) {
 298                 struct berbuf   bb = BB_NULL;
 299
 300                 if ( si->upper_func.bv_val ) {
 301
 302                         /*
 303                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%,',?))
 304                          */
 305
 306                         backsql_strfcat( &bb, "blbl",
 307                                         &si->upper_func,
 308                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 309                                                 "(ldap_entries.dn)=",
 310                                         &si->upper_func,
 311                                         (ber_len_t)sizeof( "(?)" ) - 1, "(?)" );
 312
 313                 } else {
 314
 315                         /*
 316                          * ldap_entries.dn LIKE CONCAT('%,',?)
 317                          */
 318
 319                         backsql_strfcat( &bb, "l",
 320                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 321                                                 "ldap_entries.dn=?");
 322                 }
 323
 324                 si->children_cond = bb.bb_val;
 325
 326                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 327                         "setting '%s' as default\n",
 328                         si->children_cond.bv_val, 0, 0 );
 329         }
 330
 331         if ( si->oc_query == NULL ) {
 332                 if ( BACKSQL_CREATE_NEEDS_SELECT( si ) ) {
 333                         si->oc_query =
 334                                 ch_strdup( backsql_def_needs_select_oc_query );
 335
 336                 } else {
 337                         si->oc_query = ch_strdup( backsql_def_oc_query );
 338                 }
 339
 340                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 341                         "objectclass mapping SQL statement not specified "
 342                         "(use \"oc_query\" directive in slapd.conf)\n",
 343                         0, 0, 0 );
 344                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 345                         "setting '%s' by default\n", si->oc_query, 0, 0 );
 346         }
 347
 348         if ( si->at_query == NULL ) {
 349                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 350                         "attribute mapping SQL statement not specified "
 351                         "(use \"at_query\" directive in slapd.conf)\n",
 352                         0, 0, 0 );
 353                 Debug(LDAP_DEBUG_TRACE, "backsql_db_open(): "
 354                         "setting '%s' by default\n",
 355                         backsql_def_at_query, 0, 0 );
 356                 si->at_query = ch_strdup( backsql_def_at_query );
 357         }
 358
 359         if ( si->insentry_query == NULL ) {
 360                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 361                         "entry insertion SQL statement not specified "
 362                         "(use \"insentry_query\" directive in slapd.conf)\n",
 363                         0, 0, 0 );
 364                 Debug(LDAP_DEBUG_TRACE, "backsql_db_open(): "
 365                         "setting '%s' by default\n",
 366                         backsql_def_insentry_query, 0, 0 );
 367                 si->insentry_query = ch_strdup( backsql_def_insentry_query );
 368         }
 369
 370         if ( si->delentry_query == NULL ) {
 371                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 372                         "entry deletion SQL statement not specified "
 373                         "(use \"delentry_query\" directive in slapd.conf)\n",
 374                         0, 0, 0 );
 375                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 376                         "setting '%s' by default\n",
 377                         backsql_def_delentry_query, 0, 0 );
 378                 si->delentry_query = ch_strdup( backsql_def_delentry_query );
 379         }
 380
 381         otmp.o_connid = -1;
 382         otmp.o_bd = bd;
 383         if ( backsql_get_db_conn( &otmp, &dbh ) != LDAP_SUCCESS ) {
 384                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 385                         "connection failed, exiting\n", 0, 0, 0 );
 386                 return 1;
 387         }
 388
 389         /*
 390          * Prepare ID selection query
 391          */
 392         si->id_query = NULL;
 393         idq_len = 0;
 394
 395         if ( si->upper_func.bv_val == NULL ) {
 396                 backsql_strcat( &bb, backsql_id_query, "dn=?", NULL );
 397         } else {
 398                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( si ) ) {
 399                         backsql_strcat( &bb, backsql_id_query,
 400                                         "dn_ru=?", NULL );
 401                 } else {
 402                         if ( BACKSQL_USE_REVERSE_DN( si ) ) {
 403                                 backsql_strfcat( &bb, "sbl",
 404                                                 backsql_id_query,
 405                                                 &si->upper_func,
 406                                                 (ber_len_t)sizeof( "(dn)=?" ) - 1, "(dn)=?" );
 407                         } else {
 408                                 backsql_strfcat( &bb, "sblbcb",
 409                                                 backsql_id_query,
 410                                                 &si->upper_func,
 411                                                 (ber_len_t)sizeof( "(dn)=" ) - 1, "(dn)=",
 412                                                 &si->upper_func_open,
 413                                                 '?',
 414                                                 &si->upper_func_close );
 415                         }
 416                 }
 417         }
 418         si->id_query = bb.bb_val.bv_val;
 419
 420         /*
 421          * Prepare children ID selection query
 422          */
 423         si->has_children_query = NULL;
 424
 425         bb.bb_val.bv_val = NULL;
 426         bb.bb_val.bv_len = 0;
 427         bb.bb_len = 0;
 428         backsql_strfcat( &bb, "sb",
 429                         "SELECT COUNT(distinct subordinates.id) FROM ldap_entries,ldap_entries subordinates WHERE subordinates.parent=ldap_entries.id AND ",
 430
 431                         &si->children_cond );
 432         si->has_children_query = bb.bb_val.bv_val;
 433
 434         backsql_free_db_conn( &otmp );
 435         if ( !BACKSQL_SCHEMA_LOADED( si ) ) {
 436                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 437                         "test failed, schema map not loaded - exiting\n",
 438                         0, 0, 0 );
 439                 return 1;
 440         }
 441
 442         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_open(): "
 443                 "test succeeded, schema map loaded\n", 0, 0, 0 );
 444         return 0;
 445 }
 446
 447 int
 448 backsql_db_close(
 449         BackendDB       *bd )
 450 {
 451         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_close()\n", 0, 0, 0 );
 452         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_close()\n", 0, 0, 0 );
 453         return 0;
 454 }
 455
 456 int
 457 backsql_connection_destroy( Backend *bd, Connection *c )
 458 {
 459         Operation o;
 460         o.o_bd = bd;
 461         o.o_connid = c->c_connid;
 462
 463         Debug( LDAP_DEBUG_TRACE, "==>backsql_connection_destroy()\n", 0, 0, 0 );
 464         backsql_free_db_conn( &o );
 465         Debug( LDAP_DEBUG_TRACE, "<==backsql_connection_destroy()\n", 0, 0, 0 );
 466         return 0;
 467 }
 468
 469 #endif /* SLAPD_SQL */
 470