]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/overlays/rwmmap.c
don't leak callbacks if stuff cannot be registered; provide a means to dispose of...
[openldap] / servers / slapd / overlays / rwmmap.c
index 966266162264b884ee2434af2c49d10a8747715c..ed30211df1fdd972c7786cb7a3284abca19aaf75 100644 (file)
@@ -2,7 +2,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 1999-2005 The OpenLDAP Foundation.
+ * Copyright 1999-2006 The OpenLDAP Foundation.
  * Portions Copyright 1999-2003 Howard Chu.
  * Portions Copyright 2000-2003 Pierangelo Masarati.
  * All rights reserved.
@@ -71,7 +71,7 @@ rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
        const char              *text;
        int                     rc;
 
-       assert( m );
+       assert( m != NULL );
 
        *m = NULL;
        
@@ -82,19 +82,22 @@ rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
        }
 
        /* FIXME: I don't think this is needed any more... */
-       rc = slap_str2ad( "objectClass", &mapping->m_src_ad, &text );
+       rc = slap_str2ad( "objectClass", &mapping[0].m_src_ad, &text );
        if ( rc != LDAP_SUCCESS ) {
+               ch_free( mapping );
                return rc;
        }
 
-       mapping->m_dst_ad = mapping->m_src_ad;
-       ber_dupbv( &mapping->m_dst, &mapping->m_src_ad->ad_cname );
-       ber_dupbv( &mapping->m_dst, &mapping->m_src );
+       mapping[0].m_dst_ad = mapping[0].m_src_ad;
+       ber_dupbv( &mapping[0].m_src, &mapping[0].m_src_ad->ad_cname );
+       ber_dupbv( &mapping[0].m_dst, &mapping[0].m_src );
 
-       mapping[1].m_src = mapping->m_src;
-       mapping[1].m_dst = mapping->m_dst;
+       mapping[1].m_src = mapping[0].m_src;
+       mapping[1].m_dst = mapping[0].m_dst;
+       mapping[1].m_src_ad = mapping[0].m_src_ad;
+       mapping[1].m_dst_ad = mapping[1].m_src_ad;
 
-       avl_insert( &lm->map, (caddr_t)mapping
+       avl_insert( &lm->map, (caddr_t)&mapping[0]
                        rwm_mapping_cmp, rwm_mapping_dup );
        avl_insert( &lm->remap, (caddr_t)&mapping[1], 
                        rwm_mapping_cmp, rwm_mapping_dup );
@@ -110,7 +113,11 @@ rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int
        Avlnode *tree;
        struct ldapmapping fmapping;
 
-       assert( m );
+       if ( map == NULL ) {
+               return 0;
+       }
+
+       assert( m != NULL );
 
        if ( remap == RWM_REMAP ) {
                tree = map->remap;
@@ -154,16 +161,15 @@ rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
  */
 int
 rwm_map_attrnames(
-               struct ldapmap *at_map,
-               struct ldapmap *oc_map,
-               AttributeName *an,
-               AttributeName **anp,
-               int remap
-)
+       struct ldapmap  *at_map,
+       struct ldapmap  *oc_map,
+       AttributeName   *an,
+       AttributeName   **anp,
+       int             remap )
 {
        int             i, j;
 
-       assert( anp );
+       assert( anp != NULL );
 
        *anp = NULL;
 
@@ -244,7 +250,6 @@ rwm_map_attrnames(
                        at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
                
                        if ( at_drop_missing || !m ) {
-
                                oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 
                                /* if both at_map and oc_map required to drop missing,
@@ -299,6 +304,7 @@ rwm_map_attrnames(
        if ( j == 0 && i != 0 ) {
                memset( &(*anp)[0], 0, sizeof( AttributeName ) );
                BER_BVSTR( &(*anp)[0].an_name, LDAP_NO_ATTRS );
+               j = 1;
        }
        memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 
@@ -307,11 +313,10 @@ rwm_map_attrnames(
 
 int
 rwm_map_attrs(
-               struct ldapmap *at_map,
-               AttributeName *an,
-               int remap,
-               char ***mapped_attrs
-)
+       struct ldapmap  *at_map,
+       AttributeName   *an,
+       int             remap,
+       char            ***mapped_attrs )
 {
        int i, j;
        char **na;
@@ -321,140 +326,166 @@ rwm_map_attrs(
                return LDAP_SUCCESS;
        }
 
-       for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
-               /*  */
-       }
+       for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
+               /* count'em */ ;
 
        na = (char **)ch_calloc( i + 1, sizeof( char * ) );
-       if (na == NULL) {
+       if ( na == NULL ) {
                *mapped_attrs = NULL;
                return LDAP_NO_MEMORY;
        }
 
        for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
-               struct ldapmapping      *m;
+               struct ldapmapping      *mapping;
                
-               if ( rwm_mapping( at_map, &an[i].an_name, &m, remap ) ) {
+               if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
                        continue;
                }
 
-               if ( !m || ( m && !BER_BVISNULL( &m->m_dst ) ) ) {
-                       na[j++] = m->m_dst.bv_val;
+               if ( !mapping ) {
+                       na[ j++ ] = an[ i ].an_name.bv_val;
+                       
+               } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
+                       na[ j++ ] = mapping->m_dst.bv_val;
                }
        }
+
        if ( j == 0 && i != 0 ) {
-               na[j++] = LDAP_NO_ATTRS;
+               na[ j++ ] = LDAP_NO_ATTRS;
        }
-       na[j] = NULL;
+
+       na[ j ] = NULL;
 
        *mapped_attrs = na;
+
        return LDAP_SUCCESS;
 }
 
 static int
 map_attr_value(
-               dncookie                *dc,
-               AttributeDescription    *ad,
-               struct berval           *mapped_attr,
-               struct berval           *value,
-               struct berval           *mapped_value,
-               int                     remap )
+       dncookie                *dc,
+       AttributeDescription    **adp,
+       struct berval           *mapped_attr,
+       struct berval           *value,
+       struct berval           *mapped_value,
+       int                     remap )
 {
        struct berval           vtmp = BER_BVNULL;
        int                     freeval = 0;
+       AttributeDescription    *ad = *adp;
+       struct ldapmapping      *mapping = NULL;
 
-       rwm_map( &dc->rwmap->rwm_at, &ad->ad_cname, mapped_attr, remap );
-       if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) ) {
-               /*
-                * FIXME: are we sure we need to search oc_map if at_map fails?
-                */
-               rwm_map( &dc->rwmap->rwm_oc, &ad->ad_cname, mapped_attr, remap );
-               if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) )
-               {
-                       *mapped_attr = ad->ad_cname;
+       rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
+       if ( mapping == NULL ) {
+               if ( dc->rwmap->rwm_at.drop_missing ) {
+                       return -1;
                }
-       }
 
-       if ( value == NULL ) {
-               return 0;
+               *mapped_attr = ad->ad_cname;
+
+       } else {
+               *mapped_attr = mapping->m_dst;
        }
 
-       if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName )
-       {
-               dncookie        fdc = *dc;
-               int             rc;
+       if ( value != NULL ) {
+               assert( mapped_value != NULL );
+
+               if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
+                               || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
+               {
+                       dncookie        fdc = *dc;
+                       int             rc;
 
 #ifdef ENABLE_REWRITE
-               fdc.ctx = "searchFilterAttrDN";
+                       fdc.ctx = "searchFilterAttrDN";
 #endif /* ENABLE_REWRITE */
 
-               vtmp = *value;
-               rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
-               switch ( rc ) {
-               case LDAP_SUCCESS:
-                       if ( vtmp.bv_val != value->bv_val ) {
-                               freeval = 1;
-                       }
-                       break;
+                       vtmp = *value;
+                       rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
+                       switch ( rc ) {
+                       case LDAP_SUCCESS:
+                               if ( vtmp.bv_val != value->bv_val ) {
+                                       freeval = 1;
+                               }
+                               break;
                
-               case LDAP_UNWILLING_TO_PERFORM:
-               case LDAP_OTHER:
-               default:
-                       return -1;
-               }
+                       case LDAP_UNWILLING_TO_PERFORM:
+                       case LDAP_OTHER:
+                       default:
+                               return -1;
+                       }
 
-       } else if ( ad == slap_schema.si_ad_objectClass
-                       || ad == slap_schema.si_ad_structuralObjectClass )
-       {
-               rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
-               if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
+               } else if ( ad == slap_schema.si_ad_objectClass
+                               || ad == slap_schema.si_ad_structuralObjectClass )
+               {
+                       rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
+                       if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
+                               vtmp = *value;
+                       }
+               
+               } else {
                        vtmp = *value;
                }
-               
-       } else {
-               vtmp = *value;
-       }
 
-       filter_escape_value( &vtmp, mapped_value );
+               filter_escape_value( &vtmp, mapped_value );
 
-       if ( freeval ) {
-               ch_free( vtmp.bv_val );
+               if ( freeval ) {
+                       ch_free( vtmp.bv_val );
+               }
        }
        
+       if ( mapping != NULL ) {
+               assert( mapping->m_dst_ad != NULL );
+               *adp = mapping->m_dst_ad;
+       }
+
        return 0;
 }
 
 static int
 rwm_int_filter_map_rewrite(
-               dncookie                *dc,
-               Filter                  *f,
-               struct berval           *fstr )
+       Operation               *op,
+       dncookie                *dc,
+       Filter                  *f,
+       struct berval           *fstr )
 {
        int             i;
        Filter          *p;
+       AttributeDescription *ad;
        struct berval   atmp,
                        vtmp,
-                       tmp;
+                       *tmp;
        static struct berval
-                       ber_bvfalse = BER_BVC( "(?=false)" ),
-                       ber_bvtrue = BER_BVC( "(?=true)" ),
+                       /* better than nothing... */
+                       ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
+                       ber_bvtf_false = BER_BVC( "(|)" ),
+                       /* better than nothing... */
+                       ber_bvtrue = BER_BVC( "(objectClass=*)" ),
+                       ber_bvtf_true = BER_BVC( "(&)" ),
+#if 0
+                       /* no longer needed; preserved for completeness */
                        ber_bvundefined = BER_BVC( "(?=undefined)" ),
+#endif
                        ber_bverror = BER_BVC( "(?=error)" ),
                        ber_bvunknown = BER_BVC( "(?=unknown)" ),
                        ber_bvnone = BER_BVC( "(?=none)" );
        ber_len_t       len;
 
+       assert( fstr != NULL );
+       BER_BVZERO( fstr );
+
        if ( f == NULL ) {
                ber_dupbv( fstr, &ber_bvnone );
-               return -1;
+               return LDAP_OTHER;
        }
 
        switch ( f->f_choice ) {
        case LDAP_FILTER_EQUALITY:
-               if ( map_attr_value( dc, f->f_av_desc, &atmp,
+               ad = f->f_av_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        &f->f_av_value, &vtmp, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
@@ -467,10 +498,11 @@ rwm_int_filter_map_rewrite(
                break;
 
        case LDAP_FILTER_GE:
-               if ( map_attr_value( dc, f->f_av_desc, &atmp,
+               ad = f->f_av_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        &f->f_av_value, &vtmp, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
@@ -483,10 +515,11 @@ rwm_int_filter_map_rewrite(
                break;
 
        case LDAP_FILTER_LE:
-               if ( map_attr_value( dc, f->f_av_desc, &atmp,
+               ad = f->f_av_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        &f->f_av_value, &vtmp, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
@@ -499,10 +532,11 @@ rwm_int_filter_map_rewrite(
                break;
 
        case LDAP_FILTER_APPROX:
-               if ( map_attr_value( dc, f->f_av_desc, &atmp,
+               ad = f->f_av_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        &f->f_av_value, &vtmp, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
@@ -515,10 +549,11 @@ rwm_int_filter_map_rewrite(
                break;
 
        case LDAP_FILTER_SUBSTRINGS:
-               if ( map_attr_value( dc, f->f_sub_desc, &atmp,
+               ad = f->f_sub_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        NULL, NULL, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                /* cannot be a DN ... */
@@ -577,10 +612,11 @@ rwm_int_filter_map_rewrite(
                break;
 
        case LDAP_FILTER_PRESENT:
-               if ( map_attr_value( dc, f->f_desc, &atmp,
+               ad = f->f_desc;
+               if ( map_attr_value( dc, &ad, &atmp,
                                        NULL, NULL, RWM_MAP ) )
                {
-                       return -1;
+                       goto computed;
                }
 
                fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
@@ -601,11 +637,13 @@ rwm_int_filter_map_rewrite(
                        f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 
                for ( p = f->f_list; p != NULL; p = p->f_next ) {
+                       int     rc;
+
                        len = fstr->bv_len;
 
-                       if ( rwm_int_filter_map_rewrite( dc, p, &vtmp ) )
-                       {
-                               return -1;
+                       rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
+                       if ( rc != LDAP_SUCCESS ) {
+                               return rc;
                        }
                        
                        fstr->bv_len += vtmp.bv_len;
@@ -621,10 +659,11 @@ rwm_int_filter_map_rewrite(
 
        case LDAP_FILTER_EXT: {
                if ( f->f_mr_desc ) {
-                       if ( map_attr_value( dc, f->f_mr_desc, &atmp,
+                       ad = f->f_mr_desc;
+                       if ( map_attr_value( dc, &ad, &atmp,
                                                &f->f_mr_value, &vtmp, RWM_MAP ) )
                        {
-                               return -1;
+                               goto computed;
                        }
 
                } else {
@@ -649,26 +688,39 @@ rwm_int_filter_map_rewrite(
                break;
        }
 
+       case 0:
+computed:;
+               filter_free_x( op, f );
+               f->f_choice = SLAPD_FILTER_COMPUTED;
+               f->f_result = SLAPD_COMPARE_UNDEFINED;
+               /* fallthru */
+
        case SLAPD_FILTER_COMPUTED:
                switch ( f->f_result ) {
                case LDAP_COMPARE_FALSE:
-                       tmp = ber_bvfalse;
+               /* FIXME: treat UNDEFINED as FALSE */
+               case SLAPD_COMPARE_UNDEFINED:
+                       if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
+                               tmp = &ber_bvtf_false;
+                               break;
+                       }
+                       tmp = &ber_bvfalse;
                        break;
 
                case LDAP_COMPARE_TRUE:
-                       tmp = ber_bvtrue;
-                       break;
-                       
-               case SLAPD_COMPARE_UNDEFINED:
-                       tmp = ber_bvundefined;
+                       if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
+                               tmp = &ber_bvtf_true;
+                               break;
+                       }
+                       tmp = &ber_bvtrue;
                        break;
                        
                default:
-                       tmp = ber_bverror;
+                       tmp = &ber_bverror;
                        break;
                }
 
-               ber_dupbv( fstr, &tmp );
+               ber_dupbv( fstr, tmp );
                break;
                
        default:
@@ -676,23 +728,24 @@ rwm_int_filter_map_rewrite(
                break;
        }
 
-       return 0;
+       return LDAP_SUCCESS;
 }
 
 int
 rwm_filter_map_rewrite(
-               dncookie                *dc,
-               Filter                  *f,
-               struct berval           *fstr )
+       Operation               *op,
+       dncookie                *dc,
+       Filter                  *f,
+       struct berval           *fstr )
 {
        int             rc;
        dncookie        fdc;
        struct berval   ftmp;
 
-       rc = rwm_int_filter_map_rewrite( dc, f, fstr );
+       rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 
 #ifdef ENABLE_REWRITE
-       if ( rc != LDAP_SUCCESS ) {
+       if ( rc != 0 ) {
                return rc;
        }
 
@@ -736,8 +789,8 @@ rwm_filter_map_rewrite(
                rc = LDAP_OTHER;
                break;
        }
-
 #endif /* ENABLE_REWRITE */
+
        return rc;
 }
 
@@ -766,7 +819,7 @@ rwm_referral_rewrite(
        struct berval           dn = BER_BVNULL,
                                ndn = BER_BVNULL;
 
-       assert( a_vals );
+       assert( a_vals != NULL );
 
        /*
         * Rewrite the dn if needed
@@ -793,7 +846,8 @@ rwm_referral_rewrite(
        }
 
        for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
-               struct berval   olddn, oldval;
+               struct berval   olddn = BER_BVNULL,
+                               oldval;
                int             rc;
                LDAPURLDesc     *ludp;
 
@@ -1036,8 +1090,7 @@ rwm_dnattr_rewrite(
 int
 rwm_referral_result_rewrite(
        dncookie                *dc,
-       BerVarray               a_vals
-)
+       BerVarray               a_vals )
 {
        int             i, last;
 
@@ -1045,7 +1098,8 @@ rwm_referral_result_rewrite(
        last--;
 
        for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
-               struct berval   dn, olddn;
+               struct berval   dn,
+                               olddn = BER_BVNULL;
                int             rc;
                LDAPURLDesc     *ludp;
 
@@ -1114,8 +1168,7 @@ rwm_referral_result_rewrite(
 int
 rwm_dnattr_result_rewrite(
        dncookie                *dc,
-       BerVarray               a_vals
-)
+       BerVarray               a_vals )
 {
        int             i, last;
 
@@ -1156,6 +1209,16 @@ rwm_dnattr_result_rewrite(
        return 0;
 }
 
+void
+rwm_mapping_dst_free( void *v_mapping )
+{
+       struct ldapmapping *mapping = v_mapping;
+
+       if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
+               rwm_mapping_free( &mapping[ -1 ] );
+       }
+}
+
 void
 rwm_mapping_free( void *v_mapping )
 {