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

   1 /*
   2  *       Copyright 1999, Dmitry Kovalev <mit@openldap.org>, All rights reserved.
   3  *
   4  *       Redistribution and use in source and binary forms are permitted only
   5  *       as authorized by the OpenLDAP Public License.  A copy of this
   6  *       license is available at http://www.OpenLDAP.org/license.html or
   7  *       in file LICENSE in the top-level directory of the distribution.
   8  */
   9
  10 #include "portable.h"
  11
  12 #ifdef SLAPD_SQL
  13
  14 #include <stdio.h>
  15 #include <sys/types.h>
  16 #include "slap.h"
  17 #include "ldap_pvt.h"
  18 #include "back-sql.h"
  19 #include "sql-wrap.h"
  20 #include "schema-map.h"
  21 #include "util.h"
  22
  23 #ifdef SLAPD_SQL_DYNAMIC
  24
  25 int
  26 init_module(
  27         int             argc,
  28         char            *argv[] )
  29 {
  30         BackendInfo bi;
  31
  32         memset( &bi, '\0', sizeof( bi ) );
  33         bi.bi_type = "sql";
  34         bi.bi_init = sql_back_initialize;
  35
  36         backend_add( &bi );
  37         return 0;
  38 }
  39
  40 #endif /* SLAPD_SHELL_DYNAMIC */
  41
  42 int
  43 sql_back_initialize(
  44         BackendInfo     *bi )
  45 {
  46         static char *controls[] = {
  47 #ifdef LDAP_CONTROL_NOOP
  48                 LDAP_CONTROL_NOOP,
  49 #endif
  50 #ifdef LDAP_CONTROL_VALUESRETURNFILTER
  51                 LDAP_CONTROL_VALUESRETURNFILTER,
  52 #endif
  53                 NULL
  54         };
  55
  56         bi->bi_controls = controls;
  57
  58         Debug( LDAP_DEBUG_TRACE,"==>backsql_initialize()\n", 0, 0, 0 );
  59
  60         bi->bi_open = 0;
  61         bi->bi_config = 0;
  62         bi->bi_close = 0;
  63         bi->bi_destroy = 0;
  64
  65         bi->bi_db_init = backsql_db_init;
  66         bi->bi_db_config = backsql_db_config;
  67         bi->bi_db_open = backsql_db_open;
  68         bi->bi_db_close = backsql_db_close;
  69         bi->bi_db_destroy = backsql_db_destroy;
  70
  71         bi->bi_op_abandon = 0;
  72         bi->bi_op_compare = backsql_compare;
  73         bi->bi_op_bind = backsql_bind;
  74         bi->bi_op_unbind = 0;
  75         bi->bi_op_search = backsql_search;
  76         bi->bi_op_modify = backsql_modify;
  77         bi->bi_op_modrdn = backsql_modrdn;
  78         bi->bi_op_add = backsql_add;
  79         bi->bi_op_delete = backsql_delete;
  80
  81         bi->bi_chk_referrals = 0;
  82         bi->bi_operational = backsql_operational;
  83
  84         bi->bi_connection_init = 0;
  85         bi->bi_connection_destroy = backsql_connection_destroy;
  86
  87         Debug( LDAP_DEBUG_TRACE,"<==backsql_initialize()\n", 0, 0, 0 );
  88         return 0;
  89 }
  90
  91
  92 int
  93 backsql_destroy(
  94         BackendInfo     *bi )
  95 {
  96         Debug( LDAP_DEBUG_TRACE, "==>backsql_destroy()\n", 0, 0, 0 );
  97         Debug( LDAP_DEBUG_TRACE, "<==backsql_destroy()\n", 0, 0, 0 );
  98         return 0;
  99 }
 100
 101 int
 102 backsql_db_init(
 103         BackendDB       *bd )
 104 {
 105         backsql_info *si;
 106
 107         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_init()\n", 0, 0, 0 );
 108         si = (backsql_info *)ch_calloc( 1, sizeof( backsql_info ) );
 109         memset( si, '\0', sizeof( backsql_info ) );
 110         ldap_pvt_thread_mutex_init( &si->dbconn_mutex );
 111         ldap_pvt_thread_mutex_init( &si->schema_mutex );
 112         backsql_init_db_env( si );
 113
 114         bd->be_private = si;
 115         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_init()\n", 0, 0, 0 );
 116         return 0;
 117 }
 118
 119 int
 120 backsql_db_destroy(
 121         BackendDB       *bd )
 122 {
 123         backsql_info *si = (backsql_info*)bd->be_private;
 124
 125         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_destroy()\n", 0, 0, 0 );
 126         ldap_pvt_thread_mutex_lock( &si->dbconn_mutex );
 127         backsql_free_db_env( si );
 128         ldap_pvt_thread_mutex_unlock( &si->dbconn_mutex );
 129         ldap_pvt_thread_mutex_destroy( &si->dbconn_mutex );
 130         ldap_pvt_thread_mutex_lock( &si->schema_mutex );
 131         backsql_destroy_schema_map( si );
 132         ldap_pvt_thread_mutex_unlock( &si->schema_mutex );
 133         ldap_pvt_thread_mutex_destroy( &si->schema_mutex );
 134         free( si->dbname );
 135         free( si->dbuser );
 136         if ( si->dbpasswd ) {
 137                 free( si->dbpasswd );
 138         }
 139         if ( si->dbhost ) {
 140                 free( si->dbhost );
 141         }
 142         if ( si->upper_func.bv_val ) {
 143                 free( si->upper_func.bv_val );
 144                 free( si->upper_func_open.bv_val );
 145                 free( si->upper_func_close.bv_val );
 146         }
 147
 148         free( si->subtree_cond.bv_val );
 149         free( si->oc_query );
 150         free( si->at_query );
 151         free( si->insentry_query );
 152         free( si->delentry_query );
 153         free( si );
 154
 155         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_destroy()\n", 0, 0, 0 );
 156         return 0;
 157 }
 158
 159 int
 160 backsql_db_open(
 161         BackendDB       *bd )
 162 {
 163         backsql_info    *si = (backsql_info*)bd->be_private;
 164         SQLHDBC         dbh;
 165         ber_len_t       idq_len;
 166         struct berbuf   bb = BB_NULL;
 167
 168         Operation       otmp;
 169
 170         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_open(): "
 171                 "testing RDBMS connection\n", 0, 0, 0 );
 172         if ( si->dbname == NULL ) {
 173                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 174                         "datasource name not specified "
 175                         "(use \"dbname\" directive in slapd.conf)\n", 0, 0, 0 );
 176                 return 1;
 177         }
 178
 179         if ( si->concat_func == NULL ) {
 180                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 181                         "concat func not specified (use \"concat_pattern\" "
 182                         "directive in slapd.conf)\n", 0, 0, 0 );
 183
 184                 if ( backsql_split_pattern( backsql_def_concat_func,
 185                                 &si->concat_func, 2 ) ) {
 186                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 187                                 "unable to parse pattern '%s'",
 188                                 backsql_def_concat_func, 0, 0 );
 189                         return 1;
 190                 }
 191         }
 192
 193         /*
 194          * Prepare cast string as required
 195          */
 196         if ( si->upper_func.bv_val ) {
 197                 char buf[1024];
 198
 199                 if ( BACKSQL_UPPER_NEEDS_CAST( si ) ) {
 200                         snprintf( buf, sizeof( buf ),
 201                                 "%s(cast (" /* ? as varchar(%d))) */ ,
 202                                 si->upper_func.bv_val );
 203                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 204
 205                         snprintf( buf, sizeof( buf ),
 206                                 /* (cast(? */ " as varchar(%d)))",
 207                                 BACKSQL_MAX_DN_LEN );
 208                         ber_str2bv( buf, 0, 1, &si->upper_func_close );
 209
 210                 } else {
 211                         snprintf( buf, sizeof( buf ), "%s(" /* ?) */ ,
 212                                         si->upper_func.bv_val );
 213                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 214
 215                         ber_str2bv( /* (? */ ")", 0, 1, &si->upper_func_close );
 216                 }
 217         }
 218
 219         /* normalize filter values only if necessary */
 220         si->bi_caseIgnoreMatch = mr_find( "caseIgnoreMatch" );
 221
 222         if ( si->dbuser == NULL ) {
 223                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 224                         "user name not specified "
 225                         "(use \"dbuser\" directive in slapd.conf)\n", 0, 0, 0 );
 226                 return 1;
 227         }
 228
 229         if ( si->subtree_cond.bv_val == NULL ) {
 230                 /*
 231                  * Prepare concat function for subtree search condition
 232                  */
 233                 struct berval   concat;
 234                 struct berval   values[] = {
 235                         { sizeof( "'%'" ) - 1,  "'%'" },
 236                         { sizeof( "?" ) - 1,    "?" },
 237                         { 0,                    NULL }
 238                 };
 239                 struct berbuf   bb = BB_NULL;
 240
 241                 if ( backsql_prepare_pattern( si->concat_func, values,
 242                                 &concat ) ) {
 243                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 244                                 "unable to prepare CONCAT pattern", 0, 0, 0 );
 245                         return 1;
 246                 }
 247
 248                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 249                         "subtree search SQL condition not specified "
 250                         "(use \"subtree_cond\" directive in slapd.conf)\n",
 251                         0, 0, 0);
 252
 253                 if ( si->upper_func.bv_val ) {
 254
 255                         /*
 256                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%',?))
 257                          */
 258
 259                         backsql_strfcat( &bb, "blbbb",
 260                                         &si->upper_func,
 261                                         (ber_len_t)sizeof( "(ldap_entries.dn) LIKE " ) - 1,
 262                                                 "(ldap_entries.dn) LIKE ",
 263                                         &si->upper_func_open,
 264                                         &concat,
 265                                         &si->upper_func_close );
 266
 267                 } else {
 268
 269                         /*
 270                          * ldap_entries.dn LIKE CONCAT('%',?)
 271                          */
 272
 273                         backsql_strfcat( &bb, "lb",
 274                                         (ber_len_t)sizeof( "ldap_entries.dn LIKE " ) - 1,
 275                                                 "ldap_entries.dn LIKE ",
 276                                         &concat );
 277                 }
 278
 279                 si->subtree_cond = bb.bb_val;
 280
 281                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 282                         "setting '%s' as default\n",
 283                         si->subtree_cond.bv_val, 0, 0 );
 284         }
 285
 286         if ( si->children_cond.bv_val == NULL ) {
 287                 struct berbuf   bb = BB_NULL;
 288
 289                 if ( si->upper_func.bv_val ) {
 290
 291                         /*
 292                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%,',?))
 293                          */
 294
 295                         backsql_strfcat( &bb, "blbl",
 296                                         &si->upper_func,
 297                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 298                                                 "(ldap_entries.dn)=",
 299                                         &si->upper_func,
 300                                         (ber_len_t)sizeof( "(?)" ) - 1, "(?)" );
 301
 302                 } else {
 303
 304                         /*
 305                          * ldap_entries.dn LIKE CONCAT('%,',?)
 306                          */
 307
 308                         backsql_strfcat( &bb, "l",
 309                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 310                                                 "ldap_entries.dn=?");
 311                 }
 312
 313                 si->children_cond = bb.bb_val;
 314
 315                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 316                         "setting '%s' as default\n",
 317                         si->children_cond.bv_val, 0, 0 );
 318         }
 319
 320         if ( si->oc_query == NULL ) {
 321                 if ( BACKSQL_CREATE_NEEDS_SELECT( si ) ) {
 322                         si->oc_query =
 323                                 ch_strdup( backsql_def_needs_select_oc_query );
 324
 325                 } else {
 326                         si->oc_query = ch_strdup( backsql_def_oc_query );
 327                 }
 328
 329                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 330                         "objectclass mapping SQL statement not specified "
 331                         "(use \"oc_query\" directive in slapd.conf)\n",
 332                         0, 0, 0 );
 333                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 334                         "setting '%s' by default\n", si->oc_query, 0, 0 );
 335         }
 336
 337         if ( si->at_query == NULL ) {
 338                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 339                         "attribute mapping SQL statement not specified "
 340                         "(use \"at_query\" directive in slapd.conf)\n",
 341                         0, 0, 0 );
 342                 Debug(LDAP_DEBUG_TRACE, "backsql_db_open(): "
 343                         "setting '%s' by default\n",
 344                         backsql_def_at_query, 0, 0 );
 345                 si->at_query = ch_strdup( backsql_def_at_query );
 346         }
 347
 348         if ( si->insentry_query == NULL ) {
 349                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 350                         "entry insertion SQL statement not specified "
 351                         "(use \"insentry_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_insentry_query, 0, 0 );
 356                 si->insentry_query = ch_strdup( backsql_def_insentry_query );
 357         }
 358
 359         if ( si->delentry_query == NULL ) {
 360                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 361                         "entry deletion SQL statement not specified "
 362                         "(use \"delentry_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_delentry_query, 0, 0 );
 367                 si->delentry_query = ch_strdup( backsql_def_delentry_query );
 368         }
 369
 370         otmp.o_connid = -1;
 371         otmp.o_bd = bd;
 372         if ( backsql_get_db_conn( &otmp, &dbh ) != LDAP_SUCCESS ) {
 373                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 374                         "connection failed, exiting\n", 0, 0, 0 );
 375                 return 1;
 376         }
 377
 378         /*
 379          * Prepare ID selection query
 380          */
 381         si->id_query = NULL;
 382         idq_len = 0;
 383
 384         if ( si->upper_func.bv_val == NULL ) {
 385                 backsql_strcat( &bb, backsql_id_query, "dn=?", NULL );
 386         } else {
 387                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( si ) ) {
 388                         backsql_strcat( &bb, backsql_id_query,
 389                                         "dn_ru=?", NULL );
 390                 } else {
 391                         if ( BACKSQL_USE_REVERSE_DN( si ) ) {
 392                                 backsql_strfcat( &bb, "sbl",
 393                                                 backsql_id_query,
 394                                                 &si->upper_func,
 395                                                 (ber_len_t)sizeof( "(dn)=?" ) - 1, "(dn)=?" );
 396                         } else {
 397                                 backsql_strfcat( &bb, "sblbcb",
 398                                                 backsql_id_query,
 399                                                 &si->upper_func,
 400                                                 (ber_len_t)sizeof( "(dn)=" ) - 1, "(dn)=",
 401                                                 &si->upper_func_open,
 402                                                 '?',
 403                                                 &si->upper_func_close );
 404                         }
 405                 }
 406         }
 407         si->id_query = bb.bb_val.bv_val;
 408
 409         /*
 410          * Prepare children ID selection query
 411          */
 412         si->has_children_query = NULL;
 413
 414         bb.bb_val.bv_val = NULL;
 415         bb.bb_val.bv_len = 0;
 416         bb.bb_len = 0;
 417         backsql_strfcat( &bb, "sb",
 418                         "SELECT COUNT(distinct subordinates.id) FROM ldap_entries,ldap_entries subordinates WHERE subordinates.parent=ldap_entries.id AND ",
 419
 420                         &si->children_cond );
 421         si->has_children_query = bb.bb_val.bv_val;
 422
 423         backsql_free_db_conn( &otmp );
 424         if ( !BACKSQL_SCHEMA_LOADED( si ) ) {
 425                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 426                         "test failed, schema map not loaded - exiting\n",
 427                         0, 0, 0 );
 428                 return 1;
 429         }
 430
 431         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_open(): "
 432                 "test succeeded, schema map loaded\n", 0, 0, 0 );
 433         return 0;
 434 }
 435
 436 int
 437 backsql_db_close(
 438         BackendDB       *bd )
 439 {
 440         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_close()\n", 0, 0, 0 );
 441         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_close()\n", 0, 0, 0 );
 442         return 0;
 443 }
 444
 445 int
 446 backsql_connection_destroy( Backend *bd, Connection *c )
 447 {
 448         Operation o;
 449         o.o_bd = bd;
 450         o.o_connid = c->c_connid;
 451
 452         Debug( LDAP_DEBUG_TRACE, "==>backsql_connection_destroy()\n", 0, 0, 0 );
 453         backsql_free_db_conn( &o );
 454         Debug( LDAP_DEBUG_TRACE, "<==backsql_connection_destroy()\n", 0, 0, 0 );
 455         return 0;
 456 }
 457
 458 #endif /* SLAPD_SQL */
 459