external/bsd/openldap/dist/servers/slapd/overlays/rwmconf.c

   1 /* rwmconf.c - rewrite/map configuration file routines */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/overlays/rwmconf.c,v 1.25.2.3 2008/02/11 23:26:48 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2008 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #ifdef SLAPD_OVER_RWM
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34 #include "rwm.h"
  35 #include "lutil.h"
  36
  37 int
  38 rwm_map_config(
  39                 struct ldapmap  *oc_map,
  40                 struct ldapmap  *at_map,
  41                 const char      *fname,
  42                 int             lineno,
  43                 int             argc,
  44                 char            **argv )
  45 {
  46         struct ldapmap          *map;
  47         struct ldapmapping      *mapping;
  48         char                    *src, *dst;
  49         int                     is_oc = 0;
  50         int                     rc = 0;
  51
  52         if ( argc < 3 || argc > 4 ) {
  53                 fprintf( stderr,
  54         "%s: line %d: syntax is \"map {objectclass | attribute} [<local> | *] {<foreign> | *}\"\n",
  55                         fname, lineno );
  56                 return 1;
  57         }
  58
  59         if ( strcasecmp( argv[1], "objectclass" ) == 0 ) {
  60                 map = oc_map;
  61                 is_oc = 1;
  62
  63         } else if ( strcasecmp( argv[1], "attribute" ) == 0 ) {
  64                 map = at_map;
  65
  66         } else {
  67                 fprintf( stderr, "%s: line %d: syntax is "
  68                         "\"map {objectclass | attribute} [<local> | *] "
  69                         "{<foreign> | *}\"\n",
  70                         fname, lineno );
  71                 return 1;
  72         }
  73
  74         if ( strcmp( argv[2], "*" ) == 0 ) {
  75                 if ( argc < 4 || strcmp( argv[3], "*" ) == 0 ) {
  76                         map->drop_missing = ( argc < 4 );
  77                         goto success_return;
  78                 }
  79                 src = dst = argv[3];
  80
  81         } else if ( argc < 4 ) {
  82                 src = "";
  83                 dst = argv[2];
  84
  85         } else {
  86                 src = argv[2];
  87                 dst = ( strcmp( argv[3], "*" ) == 0 ? src : argv[3] );
  88         }
  89
  90         if ( ( map == at_map )
  91                         && ( strcasecmp( src, "objectclass" ) == 0
  92                         || strcasecmp( dst, "objectclass" ) == 0 ) )
  93         {
  94                 fprintf( stderr,
  95                         "%s: line %d: objectclass attribute cannot be mapped\n",
  96                         fname, lineno );
  97                 return 1;
  98         }
  99
 100         mapping = (struct ldapmapping *)ch_calloc( 2,
 101                 sizeof(struct ldapmapping) );
 102         if ( mapping == NULL ) {
 103                 fprintf( stderr,
 104                         "%s: line %d: out of memory\n",
 105                         fname, lineno );
 106                 return 1;
 107         }
 108         ber_str2bv( src, 0, 1, &mapping[0].m_src );
 109         ber_str2bv( dst, 0, 1, &mapping[0].m_dst );
 110         mapping[1].m_src = mapping[0].m_dst;
 111         mapping[1].m_dst = mapping[0].m_src;
 112
 113         mapping[0].m_flags = RWMMAP_F_NONE;
 114         mapping[1].m_flags = RWMMAP_F_NONE;
 115
 116         /*
 117          * schema check
 118          */
 119         if ( is_oc ) {
 120                 if ( src[0] != '\0' ) {
 121                         mapping[0].m_src_oc = oc_bvfind( &mapping[0].m_src );
 122                         if ( mapping[0].m_src_oc == NULL ) {
 123                                 fprintf( stderr,
 124         "%s: line %d: warning, source objectClass '%s' "
 125         "should be defined in schema\n",
 126                                         fname, lineno, src );
 127
 128                                 /*
 129                                  * FIXME: this should become an err
 130                                  */
 131                                 mapping[0].m_src_oc = ch_malloc( sizeof( ObjectClass ) );
 132                                 memset( mapping[0].m_src_oc, 0, sizeof( ObjectClass ) );
 133                                 mapping[0].m_src_oc->soc_cname = mapping[0].m_src;
 134                                 mapping[0].m_flags |= RWMMAP_F_FREE_SRC;
 135                         }
 136                         mapping[1].m_dst_oc = mapping[0].m_src_oc;
 137                 }
 138
 139                 mapping[0].m_dst_oc = oc_bvfind( &mapping[0].m_dst );
 140                 if ( mapping[0].m_dst_oc == NULL ) {
 141                         fprintf( stderr,
 142         "%s: line %d: warning, destination objectClass '%s' "
 143         "is not defined in schema\n",
 144                                 fname, lineno, dst );
 145
 146                         mapping[0].m_dst_oc = oc_bvfind_undef( &mapping[0].m_dst );
 147                         if ( mapping[0].m_dst_oc == NULL ) {
 148                                 fprintf( stderr, "%s: line %d: unable to mimic destination objectClass '%s'\n",
 149                                         fname, lineno, dst );
 150                                 goto error_return;
 151                         }
 152                 }
 153                 mapping[1].m_src_oc = mapping[0].m_dst_oc;
 154
 155                 mapping[0].m_flags |= RWMMAP_F_IS_OC;
 156                 mapping[1].m_flags |= RWMMAP_F_IS_OC;
 157
 158         } else {
 159                 int                     rc;
 160                 const char              *text = NULL;
 161
 162                 if ( src[0] != '\0' ) {
 163                         rc = slap_bv2ad( &mapping[0].m_src,
 164                                         &mapping[0].m_src_ad, &text );
 165                         if ( rc != LDAP_SUCCESS ) {
 166                                 fprintf( stderr,
 167         "%s: line %d: warning, source attributeType '%s' "
 168         "should be defined in schema\n",
 169                                         fname, lineno, src );
 170
 171                                 /*
 172                                  * we create a fake "proxied" ad
 173                                  * and add it here.
 174                                  */
 175
 176                                 rc = slap_bv2undef_ad( &mapping[0].m_src,
 177                                                 &mapping[0].m_src_ad, &text,
 178                                                 SLAP_AD_PROXIED );
 179                                 if ( rc != LDAP_SUCCESS ) {
 180                                         fprintf( stderr,
 181         "%s: line %d: source attributeType '%s': %d (%s)\n",
 182                                                 fname, lineno, src, rc, text ? text : "null" );
 183                                         goto error_return;
 184                                 }
 185
 186                         }
 187                         mapping[1].m_dst_ad = mapping[0].m_src_ad;
 188                 }
 189
 190                 rc = slap_bv2ad( &mapping[0].m_dst, &mapping[0].m_dst_ad, &text );
 191                 if ( rc != LDAP_SUCCESS ) {
 192                         fprintf( stderr,
 193         "%s: line %d: warning, destination attributeType '%s' "
 194         "is not defined in schema\n",
 195                                 fname, lineno, dst );
 196
 197                         rc = slap_bv2undef_ad( &mapping[0].m_dst,
 198                                         &mapping[0].m_dst_ad, &text,
 199                                         SLAP_AD_PROXIED );
 200                         if ( rc != LDAP_SUCCESS ) {
 201                                 fprintf( stderr,
 202         "%s: line %d: destination attributeType '%s': %d (%s)\n",
 203                                         fname, lineno, dst, rc, text ? text : "null" );
 204                                 goto error_return;
 205                         }
 206                 }
 207                 mapping[1].m_src_ad = mapping[0].m_dst_ad;
 208         }
 209
 210         if ( ( src[0] != '\0' && avl_find( map->map, (caddr_t)mapping, rwm_mapping_cmp ) != NULL)
 211                         || avl_find( map->remap, (caddr_t)&mapping[1], rwm_mapping_cmp ) != NULL)
 212         {
 213                 fprintf( stderr,
 214                         "%s: line %d: duplicate mapping found.\n",
 215                         fname, lineno );
 216                 /* FIXME: free stuff */
 217                 goto error_return;
 218         }
 219
 220         if ( src[0] != '\0' ) {
 221                 avl_insert( &map->map, (caddr_t)&mapping[0],
 222                                         rwm_mapping_cmp, rwm_mapping_dup );
 223         }
 224         avl_insert( &map->remap, (caddr_t)&mapping[1],
 225                                 rwm_mapping_cmp, rwm_mapping_dup );
 226
 227 success_return:;
 228         if ( !is_oc && map->map == NULL ) {
 229                 /* only init if required */
 230                 rc = rwm_map_init( map, &mapping ) != LDAP_SUCCESS;
 231         }
 232
 233         return rc;
 234
 235 error_return:;
 236         if ( mapping ) {
 237                 rwm_mapping_free( mapping );
 238         }
 239
 240         return 1;
 241 }
 242
 243 static char *
 244 rwm_suffix_massage_regexize( const char *s )
 245 {
 246         char *res, *ptr;
 247         const char *p, *r;
 248         int i;
 249
 250         if ( s[0] == '\0' ) {
 251                 return ch_strdup( "^(.+)$" );
 252         }
 253
 254         for ( i = 0, p = s;
 255                         ( r = strchr( p, ',' ) ) != NULL;
 256                         p = r + 1, i++ )
 257                 ;
 258
 259         res = ch_calloc( sizeof( char ), strlen( s )
 260                         + STRLENOF( "((.+),)?" )
 261                         + STRLENOF( "[ ]?" ) * i
 262                         + STRLENOF( "$" ) + 1 );
 263
 264         ptr = lutil_strcopy( res, "((.+),)?" );
 265         for ( i = 0, p = s;
 266                         ( r = strchr( p, ',' ) ) != NULL;
 267                         p = r + 1 , i++ ) {
 268                 ptr = lutil_strncopy( ptr, p, r - p + 1 );
 269                 ptr = lutil_strcopy( ptr, "[ ]?" );
 270
 271                 if ( r[ 1 ] == ' ' ) {
 272                         r++;
 273                 }
 274         }
 275         ptr = lutil_strcopy( ptr, p );
 276         ptr[0] = '$';
 277         ptr[1] = '\0';
 278
 279         return res;
 280 }
 281
 282 static char *
 283 rwm_suffix_massage_patternize( const char *s, const char *p )
 284 {
 285         ber_len_t       len;
 286         char            *res, *ptr;
 287
 288         len = strlen( p );
 289
 290         if ( s[ 0 ] == '\0' ) {
 291                 len++;
 292         }
 293
 294         res = ch_calloc( sizeof( char ), len + STRLENOF( "%1" ) + 1 );
 295         if ( res == NULL ) {
 296                 return NULL;
 297         }
 298
 299         ptr = lutil_strcopy( res, ( p[0] == '\0' ? "%2" : "%1" ) );
 300         if ( s[ 0 ] == '\0' ) {
 301                 ptr[ 0 ] = ',';
 302                 ptr++;
 303         }
 304         lutil_strcopy( ptr, p );
 305
 306         return res;
 307 }
 308
 309 int
 310 rwm_suffix_massage_config(
 311                 struct rewrite_info *info,
 312                 struct berval *pvnc,
 313                 struct berval *nvnc,
 314                 struct berval *prnc,
 315                 struct berval *nrnc
 316 )
 317 {
 318         char *rargv[ 5 ];
 319         int line = 0;
 320
 321         rargv[ 0 ] = "rewriteEngine";
 322         rargv[ 1 ] = "on";
 323         rargv[ 2 ] = NULL;
 324         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 325
 326         rargv[ 0 ] = "rewriteContext";
 327         rargv[ 1 ] = "default";
 328         rargv[ 2 ] = NULL;
 329         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 330
 331         rargv[ 0 ] = "rewriteRule";
 332         rargv[ 1 ] = rwm_suffix_massage_regexize( pvnc->bv_val );
 333         rargv[ 2 ] = rwm_suffix_massage_patternize( pvnc->bv_val, prnc->bv_val );
 334         rargv[ 3 ] = ":";
 335         rargv[ 4 ] = NULL;
 336         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 337         ch_free( rargv[ 1 ] );
 338         ch_free( rargv[ 2 ] );
 339
 340         if ( BER_BVISEMPTY( pvnc ) ) {
 341                 rargv[ 0 ] = "rewriteRule";
 342                 rargv[ 1 ] = "^$";
 343                 rargv[ 2 ] = prnc->bv_val;
 344                 rargv[ 3 ] = ":";
 345                 rargv[ 4 ] = NULL;
 346                 rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 347         }
 348
 349         rargv[ 0 ] = "rewriteContext";
 350         rargv[ 1 ] = "searchEntryDN";
 351         rargv[ 2 ] = NULL;
 352         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 353
 354         rargv[ 0 ] = "rewriteRule";
 355         rargv[ 1 ] = rwm_suffix_massage_regexize( prnc->bv_val );
 356         rargv[ 2 ] = rwm_suffix_massage_patternize( prnc->bv_val, pvnc->bv_val );
 357         rargv[ 3 ] = ":";
 358         rargv[ 4 ] = NULL;
 359         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 360         ch_free( rargv[ 1 ] );
 361         ch_free( rargv[ 2 ] );
 362
 363         if ( BER_BVISEMPTY( prnc ) ) {
 364                 rargv[ 0 ] = "rewriteRule";
 365                 rargv[ 1 ] = "^$";
 366                 rargv[ 2 ] = pvnc->bv_val;
 367                 rargv[ 3 ] = ":";
 368                 rargv[ 4 ] = NULL;
 369                 rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 370         }
 371
 372         rargv[ 0 ] = "rewriteContext";
 373         rargv[ 1 ] = "matchedDN";
 374         rargv[ 2 ] = "alias";
 375         rargv[ 3 ] = "searchEntryDN";
 376         rargv[ 4 ] = NULL;
 377         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 378
 379 #ifdef RWM_REFERRAL_REWRITE
 380         /* FIXME: we don't want this on by default, do we? */
 381         rargv[ 0 ] = "rewriteContext";
 382         rargv[ 1 ] = "referralDN";
 383         rargv[ 2 ] = "alias";
 384         rargv[ 3 ] = "searchEntryDN";
 385         rargv[ 4 ] = NULL;
 386         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 387 #else /* ! RWM_REFERRAL_REWRITE */
 388         rargv[ 0 ] = "rewriteContext";
 389         rargv[ 1 ] = "referralAttrDN";
 390         rargv[ 2 ] = NULL;
 391         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 392
 393         rargv[ 0 ] = "rewriteContext";
 394         rargv[ 1 ] = "referralDN";
 395         rargv[ 2 ] = NULL;
 396         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 397 #endif /* ! RWM_REFERRAL_REWRITE */
 398
 399         rargv[ 0 ] = "rewriteContext";
 400         rargv[ 1 ] = "searchAttrDN";
 401         rargv[ 2 ] = "alias";
 402         rargv[ 3 ] = "searchEntryDN";
 403         rargv[ 4 ] = NULL;
 404         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 405
 406         return 0;
 407 }
 408
 409 #endif /* SLAPD_OVER_RWM */