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 backsql_LTX_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         Connection      tmp;
 165         SQLHDBC         dbh;
 166         ber_len_t       idq_len;
 167         struct berval   bv;
 168
 169         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_open(): "
 170                 "testing RDBMS connection\n", 0, 0, 0 );
 171         if ( si->dbname == NULL ) {
 172                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 173                         "datasource name not specified "
 174                         "(use \"dbname\" directive in slapd.conf)\n", 0, 0, 0 );
 175                 return 1;
 176         }
 177
 178         if ( si->concat_func == NULL ) {
 179                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 180                         "concat func not specified (use \"concat_pattern\" "
 181                         "directive in slapd.conf)\n", 0, 0, 0 );
 182
 183                 if ( backsql_split_pattern( backsql_def_concat_func,
 184                                 &si->concat_func, 2 ) ) {
 185                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 186                                 "unable to parse pattern '%s'",
 187                                 backsql_def_concat_func, 0, 0 );
 188                         return 1;
 189                 }
 190         }
 191
 192         /*
 193          * Prepare cast string as required
 194          */
 195         if ( si->upper_func.bv_val ) {
 196                 char buf[1024];
 197
 198                 if ( BACKSQL_UPPER_NEEDS_CAST( si ) ) {
 199                         snprintf( buf, sizeof( buf ),
 200                                 "%s(cast (" /* ? as varchar(%d))) */ ,
 201                                 si->upper_func.bv_val );
 202                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 203
 204                         snprintf( buf, sizeof( buf ),
 205                                 /* (cast(? */ " as varchar(%d)))",
 206                                 BACKSQL_MAX_DN_LEN );
 207                         ber_str2bv( buf, 0, 1, &si->upper_func_close );
 208
 209                 } else {
 210                         snprintf( buf, sizeof( buf ), "%s(" /* ?) */ ,
 211                                         si->upper_func.bv_val );
 212                         ber_str2bv( buf, 0, 1, &si->upper_func_open );
 213
 214                         ber_str2bv( /* (? */ ")", 0, 1, &si->upper_func_close );
 215                 }
 216         }
 217
 218         if ( si->dbuser == NULL ) {
 219                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 220                         "user name not specified "
 221                         "(use \"dbuser\" directive in slapd.conf)\n", 0, 0, 0 );
 222                 return 1;
 223         }
 224
 225         if ( si->subtree_cond.bv_val == NULL ) {
 226                 /*
 227                  * Prepare concat function for subtree search condition
 228                  */
 229                 struct berval   concat;
 230                 ber_len_t       len = 0;
 231                 struct berval   values[] = {
 232                         { sizeof( "'%'" ) - 1,  "'%'" },
 233                         { sizeof( "?" ) - 1,    "?" },
 234                         { 0,                    NULL }
 235                 };
 236
 237                 if ( backsql_prepare_pattern( si->concat_func, values,
 238                                 &concat ) ) {
 239                         Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 240                                 "unable to prepare CONCAT pattern", 0, 0, 0 );
 241                         return 1;
 242                 }
 243
 244                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 245                         "subtree search SQL condition not specified "
 246                         "(use \"subtree_cond\" directive in slapd.conf)\n",
 247                         0, 0, 0);
 248
 249                 si->subtree_cond.bv_val = NULL;
 250                 si->subtree_cond.bv_len = 0;
 251
 252                 if ( si->upper_func.bv_val ) {
 253
 254                         /*
 255                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%',?))
 256                          */
 257
 258                         backsql_strfcat( &si->subtree_cond, &len, "blbbb",
 259                                         &si->upper_func,
 260                                         (ber_len_t)sizeof( "(ldap_entries.dn) LIKE " ) - 1,
 261                                                 "(ldap_entries.dn) LIKE ",
 262                                         &si->upper_func_open,
 263                                         &concat,
 264                                         &si->upper_func_close );
 265
 266                 } else {
 267
 268                         /*
 269                          * ldap_entries.dn LIKE CONCAT('%',?)
 270                          */
 271
 272                         backsql_strfcat( &si->subtree_cond, &len, "lb",
 273                                         (ber_len_t)sizeof( "ldap_entries.dn LIKE " ) - 1,
 274                                                 "ldap_entries.dn LIKE ",
 275                                         &concat );
 276                 }
 277
 278                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 279                         "setting '%s' as default\n",
 280                         si->subtree_cond.bv_val, 0, 0 );
 281         }
 282
 283         if ( si->children_cond.bv_val == NULL ) {
 284                 ber_len_t       len = 0;
 285
 286                 if ( si->upper_func.bv_val ) {
 287
 288                         /*
 289                          * UPPER(ldap_entries.dn) LIKE UPPER(CONCAT('%,',?))
 290                          */
 291
 292                         backsql_strfcat( &si->children_cond, &len, "blbl",
 293                                         &si->upper_func,
 294                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 295                                                 "(ldap_entries.dn)=",
 296                                         &si->upper_func,
 297                                         (ber_len_t)sizeof( "(?)" ) - 1, "(?)" );
 298
 299                 } else {
 300
 301                         /*
 302                          * ldap_entries.dn LIKE CONCAT('%,',?)
 303                          */
 304
 305                         backsql_strfcat( &si->children_cond, &len, "l",
 306                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 307                                                 "ldap_entries.dn=?");
 308                 }
 309
 310                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 311                         "setting '%s' as default\n",
 312                         si->children_cond.bv_val, 0, 0 );
 313         }
 314
 315         if ( si->oc_query == NULL ) {
 316                 if ( BACKSQL_CREATE_NEEDS_SELECT( si ) ) {
 317                         si->oc_query =
 318                                 ch_strdup( backsql_def_needs_select_oc_query );
 319
 320                 } else {
 321                         si->oc_query = ch_strdup( backsql_def_oc_query );
 322                 }
 323
 324                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 325                         "objectclass mapping SQL statement not specified "
 326                         "(use \"oc_query\" directive in slapd.conf)\n",
 327                         0, 0, 0 );
 328                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 329                         "setting '%s' by default\n", si->oc_query, 0, 0 );
 330         }
 331
 332         if ( si->at_query == NULL ) {
 333                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 334                         "attribute mapping SQL statement not specified "
 335                         "(use \"at_query\" directive in slapd.conf)\n",
 336                         0, 0, 0 );
 337                 Debug(LDAP_DEBUG_TRACE, "backsql_db_open(): "
 338                         "setting '%s' by default\n",
 339                         backsql_def_at_query, 0, 0 );
 340                 si->at_query = ch_strdup( backsql_def_at_query );
 341         }
 342
 343         if ( si->insentry_query == NULL ) {
 344                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 345                         "entry insertion SQL statement not specified "
 346                         "(use \"insentry_query\" directive in slapd.conf)\n",
 347                         0, 0, 0 );
 348                 Debug(LDAP_DEBUG_TRACE, "backsql_db_open(): "
 349                         "setting '%s' by default\n",
 350                         backsql_def_insentry_query, 0, 0 );
 351                 si->insentry_query = ch_strdup( backsql_def_insentry_query );
 352         }
 353
 354         if ( si->delentry_query == NULL ) {
 355                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 356                         "entry deletion SQL statement not specified "
 357                         "(use \"delentry_query\" directive in slapd.conf)\n",
 358                         0, 0, 0 );
 359                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 360                         "setting '%s' by default\n",
 361                         backsql_def_delentry_query, 0, 0 );
 362                 si->delentry_query = ch_strdup( backsql_def_delentry_query );
 363         }
 364
 365
 366         tmp.c_connid =- 1;
 367         if ( backsql_get_db_conn( bd, &tmp, &dbh ) != LDAP_SUCCESS ) {
 368                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 369                         "connection failed, exiting\n", 0, 0, 0 );
 370                 return 1;
 371         }
 372
 373         /*
 374          * Prepare ID selection query
 375          */
 376         si->id_query = NULL;
 377         idq_len = 0;
 378
 379         bv.bv_val = NULL;
 380         bv.bv_len = 0;
 381         if ( si->upper_func.bv_val == NULL ) {
 382                 backsql_strcat( &bv, &idq_len, backsql_id_query,
 383                                 "dn=?", NULL );
 384         } else {
 385                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( si ) ) {
 386                         backsql_strcat( &bv, &idq_len, backsql_id_query,
 387                                         "dn_ru=?", NULL );
 388                 } else {
 389                         if ( BACKSQL_USE_REVERSE_DN( si ) ) {
 390                                 backsql_strfcat( &bv, &idq_len, "sbl",
 391                                                 backsql_id_query,
 392                                                 &si->upper_func,
 393                                                 (ber_len_t)sizeof( "(dn)=?" ) - 1, "(dn)=?" );
 394                         } else {
 395                                 backsql_strfcat( &bv, &idq_len, "sblbcb",
 396                                                 backsql_id_query,
 397                                                 &si->upper_func,
 398                                                 (ber_len_t)sizeof( "(dn)=" ) - 1, "(dn)=",
 399                                                 &si->upper_func_open,
 400                                                 '?',
 401                                                 &si->upper_func_close );
 402                         }
 403                 }
 404         }
 405         si->id_query = bv.bv_val;
 406
 407         /*
 408          * Prepare children ID selection query
 409          */
 410         si->has_children_query = NULL;
 411         idq_len = 0;
 412
 413         bv.bv_val = NULL;
 414         bv.bv_len = 0;
 415         backsql_strfcat( &bv, &idq_len, "sb",
 416                         "SELECT COUNT(distinct subordinates.id) FROM ldap_entries,ldap_entries AS subordinates WHERE subordinates.parent=ldap_entries.id AND ",
 417
 418                         &si->children_cond );
 419         si->has_children_query = bv.bv_val;
 420
 421         backsql_free_db_conn( bd, &tmp );
 422         if ( !BACKSQL_SCHEMA_LOADED( si ) ) {
 423                 Debug( LDAP_DEBUG_TRACE, "backsql_db_open(): "
 424                         "test failed, schema map not loaded - exiting\n",
 425                         0, 0, 0 );
 426                 return 1;
 427         }
 428
 429         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_open(): "
 430                 "test succeeded, schema map loaded\n", 0, 0, 0 );
 431         return 0;
 432 }
 433
 434 int
 435 backsql_db_close(
 436         BackendDB       *bd )
 437 {
 438         Debug( LDAP_DEBUG_TRACE, "==>backsql_db_close()\n", 0, 0, 0 );
 439         Debug( LDAP_DEBUG_TRACE, "<==backsql_db_close()\n", 0, 0, 0 );
 440         return 0;
 441 }
 442
 443 int
 444 backsql_connection_destroy(
 445         BackendDB       *be,
 446         Connection      *conn )
 447 {
 448         Debug( LDAP_DEBUG_TRACE, "==>backsql_connection_destroy()\n", 0, 0, 0 );
 449         backsql_free_db_conn( be, conn );
 450         Debug( LDAP_DEBUG_TRACE, "<==backsql_connection_destroy()\n", 0, 0, 0 );
 451         return 0;
 452 }
 453
 454 #endif /* SLAPD_SQL */
 455