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

   1 /* repl.c - log modifications for replication purposes */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2003 The OpenLDAP Foundation.
   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 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/string.h>
  32 #include <ac/ctype.h>
  33 #include <ac/socket.h>
  34
  35 #ifdef HAVE_SYS_FILE_H
  36 #include <sys/file.h>
  37 #endif
  38
  39 #include "slap.h"
  40 #include "ldif.h"
  41
  42 int
  43 add_replica_info(
  44     Backend     *be,
  45     const char  *host
  46 )
  47 {
  48         int i = 0;
  49
  50         assert( be );
  51         assert( host );
  52
  53         if ( be->be_replica != NULL ) {
  54                 for ( ; be->be_replica[ i ] != NULL; i++ );
  55         }
  56
  57         be->be_replica = ch_realloc( be->be_replica,
  58                 sizeof( struct slap_replica_info * )*( i + 2 ) );
  59
  60         be->be_replica[ i ]
  61                 = ch_calloc( sizeof( struct slap_replica_info ), 1 );
  62         be->be_replica[ i ]->ri_host = ch_strdup( host );
  63         be->be_replica[ i ]->ri_nsuffix = NULL;
  64         be->be_replica[ i ]->ri_attrs = NULL;
  65         be->be_replica[ i + 1 ] = NULL;
  66
  67         return( i );
  68 }
  69
  70 int
  71 add_replica_suffix(
  72     Backend     *be,
  73     int         nr,
  74     const char  *suffix
  75 )
  76 {
  77         struct berval dn, ndn;
  78         int rc;
  79
  80         dn.bv_val = (char *) suffix;
  81         dn.bv_len = strlen( dn.bv_val );
  82
  83         rc = dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL );
  84         if( rc != LDAP_SUCCESS ) {
  85                 return 2;
  86         }
  87
  88         if ( select_backend( &ndn, 0, 0 ) != be ) {
  89                 free( ndn.bv_val );
  90                 return 1;
  91         }
  92
  93         ber_bvarray_add( &be->be_replica[nr]->ri_nsuffix, &ndn );
  94         return 0;
  95 }
  96
  97 int
  98 add_replica_attrs(
  99         Backend *be,
 100         int     nr,
 101         char    *attrs,
 102         int     exclude
 103 )
 104 {
 105         if ( be->be_replica[nr]->ri_attrs != NULL ) {
 106                 if ( be->be_replica[nr]->ri_exclude != exclude ) {
 107                         fprintf( stderr, "attr selective replication directive '%s' conflicts with previous one (discarded)\n", attrs );
 108                         ch_free( be->be_replica[nr]->ri_attrs );
 109                         be->be_replica[nr]->ri_attrs = NULL;
 110                 }
 111         }
 112
 113         be->be_replica[nr]->ri_exclude = exclude;
 114         be->be_replica[nr]->ri_attrs = str2anlist( be->be_replica[nr]->ri_attrs,
 115                 attrs, "," );
 116         return ( be->be_replica[nr]->ri_attrs == NULL );
 117 }
 118
 119 static void
 120 print_vals( FILE *fp, struct berval *type, struct berval *bv );
 121 static void
 122 replog1( struct slap_replica_info *ri, Operation *op, FILE *fp, void *first);
 123
 124 void
 125 replog( Operation *op )
 126 {
 127         Modifications   *ml = NULL;
 128         Attribute       *a = NULL;
 129         FILE    *fp, *lfp;
 130         int     i;
 131 /* undef NO_LOG_WHEN_NO_REPLICAS */
 132 #ifdef NO_LOG_WHEN_NO_REPLICAS
 133         int     count = 0;
 134 #endif
 135         int     subsets = 0;
 136         long now = slap_get_time();
 137
 138         if ( op->o_bd->be_replogfile == NULL && replogfile == NULL ) {
 139                 return;
 140         }
 141
 142         ldap_pvt_thread_mutex_lock( &replog_mutex );
 143         if ( (fp = lock_fopen( op->o_bd->be_replogfile ? op->o_bd->be_replogfile :
 144             replogfile, "a", &lfp )) == NULL ) {
 145                 ldap_pvt_thread_mutex_unlock( &replog_mutex );
 146                 return;
 147         }
 148
 149         for ( i = 0; op->o_bd->be_replica != NULL && op->o_bd->be_replica[i] != NULL; i++ ) {
 150                 /* check if dn's suffix matches legal suffixes, if any */
 151                 if ( op->o_bd->be_replica[i]->ri_nsuffix != NULL ) {
 152                         int j;
 153
 154                         for ( j = 0; op->o_bd->be_replica[i]->ri_nsuffix[j].bv_val; j++ ) {
 155                                 if ( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_replica[i]->ri_nsuffix[j] ) ) {
 156                                         break;
 157                                 }
 158                         }
 159
 160                         if ( !op->o_bd->be_replica[i]->ri_nsuffix[j].bv_val ) {
 161                                 /* do not add "replica:" line */
 162                                 continue;
 163                         }
 164                 }
 165                 /* See if we only want a subset of attributes */
 166                 if ( op->o_bd->be_replica[i]->ri_attrs != NULL &&
 167                         ( op->o_tag == LDAP_REQ_MODIFY || op->o_tag == LDAP_REQ_ADD || op->o_tag == LDAP_REQ_EXTENDED ) ) {
 168                         if ( !subsets ) {
 169                                 subsets = i + 1;
 170                         }
 171                         /* Do attribute subsets by themselves in a second pass */
 172                         continue;
 173                 }
 174
 175                 fprintf( fp, "replica: %s\n", op->o_bd->be_replica[i]->ri_host );
 176 #ifdef NO_LOG_WHEN_NO_REPLICAS
 177                 ++count;
 178 #endif
 179         }
 180
 181 #ifdef NO_LOG_WHEN_NO_REPLICAS
 182         if ( count == 0 && subsets == 0 ) {
 183                 /* if no replicas matched, drop the log
 184                  * (should we log it anyway?) */
 185                 lock_fclose( fp, lfp );
 186                 ldap_pvt_thread_mutex_unlock( &replog_mutex );
 187
 188                 return;
 189         }
 190 #endif
 191
 192         fprintf( fp, "time: %ld\n", now );
 193         fprintf( fp, "dn: %s\n", op->o_req_dn.bv_val );
 194
 195         replog1( NULL, op, fp, NULL );
 196
 197         if ( subsets > 0 ) {
 198                 void *first;
 199                 for ( i = subsets - 1; op->o_bd->be_replica != NULL && op->o_bd->be_replica[i] != NULL; i++ ) {
 200
 201                         /* If no attrs, we already did this above */
 202                         if ( op->o_bd->be_replica[i]->ri_attrs == NULL ) {
 203                                 continue;
 204                         }
 205
 206                         /* check if dn's suffix matches legal suffixes, if any */
 207                         if ( op->o_bd->be_replica[i]->ri_nsuffix != NULL ) {
 208                                 int j;
 209
 210                                 for ( j = 0; op->o_bd->be_replica[i]->ri_nsuffix[j].bv_val; j++ ) {
 211                                         if ( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_replica[i]->ri_nsuffix[j] ) ) {
 212                                                 break;
 213                                         }
 214                                 }
 215
 216                                 if ( !op->o_bd->be_replica[i]->ri_nsuffix[j].bv_val ) {
 217                                         /* do not add "replica:" line */
 218                                         continue;
 219                                 }
 220                         }
 221                         subsets = 0;
 222                         first = NULL;
 223                         switch( op->o_tag ) {
 224                         case LDAP_REQ_EXTENDED:
 225                                 /* quick hack for extended operations */
 226                                 /* assume change parameter is a Modfications* */
 227                                 /* fall thru */
 228                         case LDAP_REQ_MODIFY:
 229                                 for ( ml = op->orm_modlist; ml != NULL; ml = ml->sml_next ) {
 230                                         int is_in, exclude, ocs = 0;
 231
 232                                         exclude = op->o_bd->be_replica[i]->ri_exclude;
 233
 234                                         if ( ml->sml_desc == slap_schema.si_ad_objectClass
 235                                                 && ml->sml_bvalues ) {
 236                                                 AttributeName *an;
 237                                                 for ( an = op->o_bd->be_replica[i]->ri_attrs; an->an_name.bv_val; an++ ) {
 238                                                         if ( an->an_oc ) {
 239                                                                 int i, match = 0;
 240                                                                 ocs = 1;
 241                                                                 for ( i=0; ml->sml_bvalues[i].bv_val; i++ ) {
 242                                                                         if ( ml->sml_bvalues[i].bv_len == an->an_name.bv_len
 243                                                                                 && !strcasecmp(ml->sml_bvalues[i].bv_val,
 244                                                                                         an->an_name.bv_val ) ) {
 245                                                                                 match = 1;
 246                                                                                 break;
 247                                                                         }
 248                                                                 }
 249                                                                 match ^= exclude;
 250                                                                 match ^= an->an_oc_exclude;
 251                                                                 /* Found a match, stop looking */
 252                                                                 if ( match ) {
 253                                                                         ocs = 2;
 254                                                                         break;
 255                                                                 }
 256                                                         }
 257                                                 }
 258                                                 if ( ocs == 1 ) continue;
 259                                         }
 260
 261                                         is_in = ad_inlist( ml->sml_desc, op->o_bd->be_replica[i]->ri_attrs );
 262
 263                                         /*
 264                                          * there might be a more clever way to do this test,
 265                                          * but this way, at least, is comprehensible :)
 266                                          */
 267                                         if ( ( is_in && !exclude ) || ( !is_in && exclude ) ) {
 268                                                 subsets = 1;
 269                                                 first = ml;
 270                                                 break;
 271                                         }
 272                                 }
 273                                 if ( !subsets ) {
 274                                         continue;
 275                                 }
 276                                 break;
 277                         case LDAP_REQ_ADD:
 278                                 for ( a = op->ora_e->e_attrs; a != NULL; a = a->a_next ) {
 279                                         int is_in, exclude;
 280
 281                                         is_in = ad_inlist( a->a_desc, op->o_bd->be_replica[i]->ri_attrs );
 282                                         exclude = op->o_bd->be_replica[i]->ri_exclude;
 283
 284                                         if ( ( is_in && !exclude ) || ( !is_in && exclude ) ) {
 285                                                 subsets = 1;
 286                                                 first = a;
 287                                                 break;
 288                                         }
 289                                 }
 290                                 if ( !subsets ) {
 291                                         continue;
 292                                 }
 293                                 break;
 294                         default:
 295                                 /* Other operations were logged in the first pass */
 296                                 continue;
 297                         }
 298                         fprintf( fp, "replica: %s\n", op->o_bd->be_replica[i]->ri_host );
 299                         fprintf( fp, "time: %ld\n", now );
 300                         fprintf( fp, "dn: %s\n", op->o_req_dn.bv_val );
 301                         replog1( op->o_bd->be_replica[i], op, fp, first );
 302                 }
 303         }
 304
 305         lock_fclose( fp, lfp );
 306         ldap_pvt_thread_mutex_unlock( &replog_mutex );
 307 }
 308
 309
 310 static void
 311 replog1(
 312     struct slap_replica_info *ri,
 313     Operation *op,
 314     FILE        *fp,
 315         void    *first
 316 )
 317 {
 318         Modifications   *ml;
 319         Attribute       *a;
 320         AttributeName   *an;
 321         int             domod = 1;
 322
 323         switch ( op->o_tag ) {
 324         case LDAP_REQ_EXTENDED:
 325                 /* quick hack for extended operations */
 326                 /* assume change parameter is a Modfications* */
 327                 /* fall thru */
 328
 329         case LDAP_REQ_MODIFY:
 330                 ml = first ? first : op->orm_modlist;
 331                 for ( ; ml != NULL; ml = ml->sml_next ) {
 332                         char *type;
 333                         int ocs = 0;
 334                         if ( ri && ri->ri_attrs ) {
 335                                 int is_in = ad_inlist( ml->sml_desc, ri->ri_attrs );
 336
 337                                 if ( ( !is_in && !ri->ri_exclude )
 338                                         || ( is_in && ri->ri_exclude ) )
 339                                 {
 340                                         continue;
 341                                 }
 342                                 /* If this is objectClass, see if the value is included
 343                                  * in any subset, otherwise drop it.
 344                                  */
 345                                 if ( ml->sml_desc == slap_schema.si_ad_objectClass
 346                                         && ml->sml_bvalues ) {
 347                                         for ( an = ri->ri_attrs; an->an_name.bv_val; an++ ) {
 348                                                 if ( an->an_oc ) {
 349                                                         int i, match = 0;
 350                                                         ocs = 1;
 351                                                         for ( i=0; ml->sml_bvalues[i].bv_val; i++ ) {
 352                                                                 if ( ml->sml_bvalues[i].bv_len == an->an_name.bv_len
 353                                                                         && !strcasecmp(ml->sml_bvalues[i].bv_val,
 354                                                                                 an->an_name.bv_val ) ) {
 355                                                                         match = 1;
 356                                                                         break;
 357                                                                 }
 358                                                         }
 359                                                         match ^= ri->ri_exclude;
 360                                                         match ^= an->an_oc_exclude;
 361                                                         /* Found a match, stop looking */
 362                                                         if ( match ) {
 363                                                                 ocs = 2;
 364                                                                 break;
 365                                                         }
 366                                                 }
 367                                         }
 368                                 }
 369                                 /* Have explicit objectClasses, but none matched - forget it */
 370                                 if ( ocs == 1 ) continue;
 371                         }
 372                         if ( domod ) {
 373                                 fprintf( fp, "changetype: modify\n" );
 374                                 domod = 0;
 375                         }
 376                         type = ml->sml_desc->ad_cname.bv_val;
 377                         switch ( ml->sml_op ) {
 378                         case LDAP_MOD_ADD:
 379                                 fprintf( fp, "add: %s\n", type );
 380                                 break;
 381
 382                         case LDAP_MOD_DELETE:
 383                                 fprintf( fp, "delete: %s\n", type );
 384                                 break;
 385
 386                         case LDAP_MOD_REPLACE:
 387                                 fprintf( fp, "replace: %s\n", type );
 388                                 break;
 389
 390                         case LDAP_MOD_INCREMENT:
 391                                 fprintf( fp, "increment: %s\n", type );
 392                                 break;
 393                         }
 394                         if ( ocs == 2 ) {
 395                                 int i;
 396                                 struct berval vals[2];
 397                                 vals[1].bv_val = NULL;
 398                                 vals[1].bv_len = 0;
 399                                 for ( i=0; ml->sml_bvalues[i].bv_val; i++ ) {
 400                                         int match = 0;
 401                                         for ( an = ri->ri_attrs; an->an_name.bv_val; an++ ) {
 402                                                 if ( an->an_oc
 403                                                         && ml->sml_bvalues[i].bv_len == an->an_name.bv_len
 404                                                         && !strcasecmp(ml->sml_bvalues[i].bv_val,
 405                                                                 an->an_name.bv_val ) ) {
 406                                                         match = 1 ^ an->an_oc_exclude;
 407                                                         break;
 408                                                 }
 409                                         }
 410                                         match ^= ri->ri_exclude;
 411                                         if ( match ) {
 412                                                 vals[0] = an->an_name;
 413                                                 print_vals( fp, &ml->sml_desc->ad_cname, vals );
 414                                         }
 415                                 }
 416                         } else if ( ml->sml_bvalues ) {
 417                                 print_vals( fp, &ml->sml_desc->ad_cname, ml->sml_bvalues );
 418                         }
 419                         fprintf( fp, "-\n" );
 420                 }
 421                 break;
 422
 423         case LDAP_REQ_ADD:
 424                 fprintf( fp, "changetype: add\n" );
 425                 a = first ? first : op->ora_e->e_attrs;
 426                 for ( ; a != NULL; a=a->a_next ) {
 427                         if ( ri && ri->ri_attrs ) {
 428                                 int is_in = ad_inlist( a->a_desc, ri->ri_attrs );
 429                                 if ( ( !is_in && !ri->ri_exclude ) || ( is_in && ri->ri_exclude ) ) {
 430                                         continue;
 431                                 }
 432
 433                                 /* If the list includes objectClass names,
 434                                  * only include those classes in the
 435                                  * objectClass attribute
 436                                  */
 437                                 if ( a->a_desc == slap_schema.si_ad_objectClass ) {
 438                                         int i, ocs = 0;
 439                                         struct berval vals[2];
 440                                         vals[1].bv_val = NULL;
 441                                         vals[1].bv_len = 0;
 442                                         for ( i=0; a->a_vals[i].bv_val; i++ ) {
 443                                                 int match = 0;
 444                                                 for ( an = ri->ri_attrs; an->an_name.bv_val; an++ ) {
 445                                                         if ( an->an_oc ) {
 446                                                                 ocs = 1;
 447                                                                 if ( a->a_vals[i].bv_len == an->an_name.bv_len
 448                                                                         && !strcasecmp(a->a_vals[i].bv_val,
 449                                                                                 an->an_name.bv_val ) ) {
 450                                                                         match = 1 ^ an->an_oc_exclude;
 451                                                                         break;
 452                                                                 }
 453                                                         }
 454                                                 }
 455                                                 match ^= ri->ri_exclude;
 456                                                 if ( ocs && match ) {
 457                                                         vals[0] = an->an_name;
 458                                                         print_vals( fp, &a->a_desc->ad_cname, vals );
 459                                                 }
 460                                         }
 461                                         if ( ocs ) continue;
 462                                 }
 463                         }
 464                         print_vals( fp, &a->a_desc->ad_cname, a->a_vals );
 465                 }
 466                 break;
 467
 468         case LDAP_REQ_DELETE:
 469                 fprintf( fp, "changetype: delete\n" );
 470                 break;
 471
 472         case LDAP_REQ_MODRDN:
 473                 fprintf( fp, "changetype: modrdn\n" );
 474                 fprintf( fp, "newrdn: %s\n", op->orr_newrdn.bv_val );
 475                 fprintf( fp, "deleteoldrdn: %d\n", op->orr_deleteoldrdn ? 1 : 0 );
 476                 if( op->orr_newSup != NULL ) {
 477                         fprintf( fp, "newsuperior: %s\n", op->orr_newSup->bv_val );
 478                 }
 479         }
 480         fprintf( fp, "\n" );
 481 }
 482
 483 static void
 484 print_vals(
 485         FILE *fp,
 486         struct berval *type,
 487         struct berval *bv )
 488 {
 489         ber_len_t i, len;
 490         char    *buf, *bufp;
 491
 492         for ( i = 0, len = 0; bv && bv[i].bv_val; i++ ) {
 493                 if ( bv[i].bv_len > len )
 494                         len = bv[i].bv_len;
 495         }
 496
 497         len = LDIF_SIZE_NEEDED( type->bv_len, len ) + 1;
 498         buf = (char *) ch_malloc( len );
 499
 500         for ( ; bv && bv->bv_val; bv++ ) {
 501                 bufp = buf;
 502                 ldif_sput( &bufp, LDIF_PUT_VALUE, type->bv_val,
 503                                     bv->bv_val, bv->bv_len );
 504                 *bufp = '\0';
 505
 506                 fputs( buf, fp );
 507
 508         }
 509         free( buf );
 510 }