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openldap/servers/slapd/overlays/rwmmap.c
Pierangelo Masarati d36099aa62 cleanup (related to ITS#5760)
2009-02-15 22:16:21 +00:00

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/* rwmmap.c - rewrite/mapping routines */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2009 The OpenLDAP Foundation.
* Portions Copyright 1999-2003 Howard Chu.
* Portions Copyright 2000-2003 Pierangelo Masarati.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by the Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include "portable.h"
#ifdef SLAPD_OVER_RWM
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "rwm.h"
#undef ldap_debug /* silence a warning in ldap-int.h */
#include "../../../libraries/libldap/ldap-int.h"
int
rwm_mapping_cmp( const void *c1, const void *c2 )
{
struct ldapmapping *map1 = (struct ldapmapping *)c1;
struct ldapmapping *map2 = (struct ldapmapping *)c2;
int rc = map1->m_src.bv_len - map2->m_src.bv_len;
if ( rc ) {
return rc;
}
return strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val );
}
int
rwm_mapping_dup( void *c1, void *c2 )
{
struct ldapmapping *map1 = (struct ldapmapping *)c1;
struct ldapmapping *map2 = (struct ldapmapping *)c2;
int rc = map1->m_src.bv_len - map2->m_src.bv_len;
if ( rc ) {
return 0;
}
return ( ( strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val ) == 0 ) ? -1 : 0 );
}
int
rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
{
struct ldapmapping *mapping;
const char *text;
int rc;
assert( m != NULL );
*m = NULL;
mapping = (struct ldapmapping *)ch_calloc( 2,
sizeof( struct ldapmapping ) );
if ( mapping == NULL ) {
return LDAP_NO_MEMORY;
}
/* NOTE: this is needed to make sure that
* rwm-map attribute *
* does not filter out all attributes including objectClass */
rc = slap_str2ad( "objectClass", &mapping[0].m_src_ad, &text );
if ( rc != LDAP_SUCCESS ) {
ch_free( mapping );
return rc;
}
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[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[0],
rwm_mapping_cmp, rwm_mapping_dup );
avl_insert( &lm->remap, (caddr_t)&mapping[1],
rwm_mapping_cmp, rwm_mapping_dup );
*m = mapping;
return rc;
}
int
rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
{
Avlnode *tree;
struct ldapmapping fmapping;
if ( map == NULL ) {
return 0;
}
assert( m != NULL );
/* let special attrnames slip through (ITS#5760) */
if ( bvmatch( s, slap_bv_no_attrs )
|| bvmatch( s, slap_bv_all_user_attrs )
|| bvmatch( s, slap_bv_all_operational_attrs ) )
{
*m = NULL;
return 0;
}
if ( remap == RWM_REMAP ) {
tree = map->remap;
} else {
tree = map->map;
}
fmapping.m_src = *s;
*m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
rwm_mapping_cmp );
if ( *m == NULL ) {
return map->drop_missing;
}
return 0;
}
void
rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
{
struct ldapmapping *mapping;
/* map->map may be NULL when mapping is configured,
* but map->remap can't */
if ( map->remap == NULL ) {
*bv = *s;
return;
}
BER_BVZERO( bv );
( void )rwm_mapping( map, s, &mapping, remap );
if ( mapping != NULL ) {
if ( !BER_BVISNULL( &mapping->m_dst ) ) {
*bv = mapping->m_dst;
}
return;
}
if ( !map->drop_missing ) {
*bv = *s;
}
}
/*
* Map attribute names in place
*/
int
rwm_map_attrnames(
struct ldapmap *at_map,
struct ldapmap *oc_map,
AttributeName *an,
AttributeName **anp,
int remap )
{
int i, j;
assert( anp != NULL );
*anp = NULL;
if ( an == NULL ) {
return LDAP_SUCCESS;
}
for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
/* just count */ ;
*anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
if ( *anp == NULL ) {
return LDAP_NO_MEMORY;
}
for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
struct ldapmapping *m;
int at_drop_missing = 0,
oc_drop_missing = 0;
if ( an[i].an_desc ) {
if ( !at_map ) {
/* FIXME: better leave as is? */
continue;
}
at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
continue;
}
if ( !m ) {
(*anp)[j] = an[i];
j++;
continue;
}
(*anp)[j] = an[i];
if ( remap == RWM_MAP ) {
(*anp)[j].an_name = m->m_dst;
(*anp)[j].an_desc = m->m_dst_ad;
} else {
(*anp)[j].an_name = m->m_src;
(*anp)[j].an_desc = m->m_src_ad;
}
j++;
continue;
} else if ( an[i].an_oc ) {
if ( !oc_map ) {
/* FIXME: better leave as is? */
continue;
}
oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
continue;
}
if ( !m ) {
(*anp)[j] = an[i];
j++;
continue;
}
(*anp)[j] = an[i];
if ( remap == RWM_MAP ) {
(*anp)[j].an_name = m->m_dst;
(*anp)[j].an_oc = m->m_dst_oc;
} else {
(*anp)[j].an_name = m->m_src;
(*anp)[j].an_oc = m->m_src_oc;
}
} else {
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,
* then do it */
if ( oc_drop_missing && at_drop_missing ) {
continue;
}
/* if no oc_map mapping was found and at_map required
* to drop missing, then do it; otherwise, at_map wins
* and an is considered an attr and is left unchanged */
if ( !m ) {
if ( at_drop_missing ) {
continue;
}
(*anp)[j] = an[i];
j++;
continue;
}
if ( BER_BVISNULL( &m->m_dst ) ) {
continue;
}
(*anp)[j] = an[i];
if ( remap == RWM_MAP ) {
(*anp)[j].an_name = m->m_dst;
(*anp)[j].an_oc = m->m_dst_oc;
} else {
(*anp)[j].an_name = m->m_src;
(*anp)[j].an_oc = m->m_src_oc;
}
j++;
continue;
}
if ( !BER_BVISNULL( &m->m_dst ) ) {
(*anp)[j] = an[i];
if ( remap == RWM_MAP ) {
(*anp)[j].an_name = m->m_dst;
(*anp)[j].an_desc = m->m_dst_ad;
} else {
(*anp)[j].an_name = m->m_src;
(*anp)[j].an_desc = m->m_src_ad;
}
j++;
continue;
}
}
}
if ( j == 0 && i != 0 ) {
memset( &(*anp)[0], 0, sizeof( AttributeName ) );
(*anp)[0].an_name = *slap_bv_no_attrs;
j = 1;
}
memset( &(*anp)[j], 0, sizeof( AttributeName ) );
return LDAP_SUCCESS;
}
int
rwm_map_attrs(
struct ldapmap *at_map,
AttributeName *an,
int remap,
char ***mapped_attrs )
{
int i, j;
char **na;
if ( an == NULL ) {
*mapped_attrs = NULL;
return LDAP_SUCCESS;
}
for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
/* count'em */ ;
na = (char **)ch_calloc( i + 1, sizeof( char * ) );
if ( na == NULL ) {
*mapped_attrs = NULL;
return LDAP_NO_MEMORY;
}
for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
struct ldapmapping *mapping;
if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
continue;
}
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 ] = NULL;
*mapped_attrs = na;
return LDAP_SUCCESS;
}
static int
map_attr_value(
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_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
if ( mapping == NULL ) {
if ( dc->rwmap->rwm_at.drop_missing ) {
return -1;
}
*mapped_attr = ad->ad_cname;
} else {
*mapped_attr = mapping->m_dst;
}
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;
fdc.ctx = "searchFilterAttrDN";
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;
}
} else if ( ad->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ) {
if ( ad->ad_type->sat_equality->smr_normalize(
(SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
NULL, NULL, value, &vtmp, NULL ) )
{
return -1;
}
freeval = 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 ) ) {
vtmp = *value;
}
} else {
vtmp = *value;
}
filter_escape_value( &vtmp, mapped_value );
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(
Operation *op,
dncookie *dc,
Filter *f,
struct berval *fstr )
{
int i;
Filter *p;
AttributeDescription *ad;
struct berval atmp,
vtmp,
*tmp;
static struct berval
/* 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 LDAP_OTHER;
}
if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
goto computed;
}
switch ( f->f_choice & SLAPD_FILTER_MASK ) {
case LDAP_FILTER_EQUALITY:
ad = f->f_av_desc;
if ( map_attr_value( dc, &ad, &atmp,
&f->f_av_value, &vtmp, RWM_MAP ) )
{
goto computed;
}
fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
break;
case LDAP_FILTER_GE:
ad = f->f_av_desc;
if ( map_attr_value( dc, &ad, &atmp,
&f->f_av_value, &vtmp, RWM_MAP ) )
{
goto computed;
}
fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
break;
case LDAP_FILTER_LE:
ad = f->f_av_desc;
if ( map_attr_value( dc, &ad, &atmp,
&f->f_av_value, &vtmp, RWM_MAP ) )
{
goto computed;
}
fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
break;
case LDAP_FILTER_APPROX:
ad = f->f_av_desc;
if ( map_attr_value( dc, &ad, &atmp,
&f->f_av_value, &vtmp, RWM_MAP ) )
{
goto computed;
}
fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
break;
case LDAP_FILTER_SUBSTRINGS:
ad = f->f_sub_desc;
if ( map_attr_value( dc, &ad, &atmp,
NULL, NULL, RWM_MAP ) )
{
goto computed;
}
/* cannot be a DN ... */
fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
atmp.bv_val );
if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
len = fstr->bv_len;
filter_escape_value( &f->f_sub_initial, &vtmp );
fstr->bv_len += vtmp.bv_len;
fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
/* "(attr=" */ "%s*)",
vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
}
if ( f->f_sub_any != NULL ) {
for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
len = fstr->bv_len;
filter_escape_value( &f->f_sub_any[i], &vtmp );
fstr->bv_len += vtmp.bv_len + 1;
fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
/* "(attr=[init]*[any*]" */ "%s*)",
vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
}
}
if ( !BER_BVISNULL( &f->f_sub_final ) ) {
len = fstr->bv_len;
filter_escape_value( &f->f_sub_final, &vtmp );
fstr->bv_len += vtmp.bv_len;
fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
/* "(attr=[init*][any*]" */ "%s)",
vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
}
break;
case LDAP_FILTER_PRESENT:
ad = f->f_desc;
if ( map_attr_value( dc, &ad, &atmp,
NULL, NULL, RWM_MAP ) )
{
goto computed;
}
fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
atmp.bv_val );
break;
case LDAP_FILTER_AND:
case LDAP_FILTER_OR:
case LDAP_FILTER_NOT:
fstr->bv_len = STRLENOF( "(%)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
f->f_choice == LDAP_FILTER_AND ? '&' :
f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
for ( p = f->f_list; p != NULL; p = p->f_next ) {
int rc;
len = fstr->bv_len;
rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
if ( rc != LDAP_SUCCESS ) {
return rc;
}
fstr->bv_len += vtmp.bv_len;
fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
/*"("*/ "%s)", vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
}
break;
case LDAP_FILTER_EXT: {
if ( f->f_mr_desc ) {
ad = f->f_mr_desc;
if ( map_attr_value( dc, &ad, &atmp,
&f->f_mr_value, &vtmp, RWM_MAP ) )
{
goto computed;
}
} else {
BER_BVSTR( &atmp, "" );
filter_escape_value( &f->f_mr_value, &vtmp );
}
fstr->bv_len = atmp.bv_len +
( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
vtmp.bv_len + STRLENOF( "(:=)" );
fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
atmp.bv_val,
f->f_mr_dnattrs ? ":dn" : "",
!BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
!BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
vtmp.bv_len ? vtmp.bv_val : "" );
ch_free( vtmp.bv_val );
break;
}
case -1:
computed:;
filter_free_x( op, f, 0 );
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:
/* 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:
if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
tmp = &ber_bvtf_true;
break;
}
tmp = &ber_bvtrue;
break;
default:
tmp = &ber_bverror;
break;
}
ber_dupbv( fstr, tmp );
break;
default:
ber_dupbv( fstr, &ber_bvunknown );
break;
}
return LDAP_SUCCESS;
}
int
rwm_filter_map_rewrite(
Operation *op,
dncookie *dc,
Filter *f,
struct berval *fstr )
{
int rc;
dncookie fdc;
struct berval ftmp;
rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
if ( rc != 0 ) {
return rc;
}
fdc = *dc;
ftmp = *fstr;
fdc.ctx = "searchFilter";
switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
fdc.conn, &fstr->bv_val ) )
{
case REWRITE_REGEXEC_OK:
if ( !BER_BVISNULL( fstr ) ) {
fstr->bv_len = strlen( fstr->bv_val );
if ( fstr->bv_val != ftmp.bv_val ) {
ch_free( ftmp.bv_val );
}
} else {
*fstr = ftmp;
}
Debug( LDAP_DEBUG_ARGS,
"[rw] %s: \"%s\" -> \"%s\"\n",
fdc.ctx, ftmp.bv_val, fstr->bv_val );
rc = LDAP_SUCCESS;
break;
case REWRITE_REGEXEC_UNWILLING:
if ( fdc.rs ) {
fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
fdc.rs->sr_text = "Operation not allowed";
}
rc = LDAP_UNWILLING_TO_PERFORM;
break;
case REWRITE_REGEXEC_ERR:
if ( fdc.rs ) {
fdc.rs->sr_err = LDAP_OTHER;
fdc.rs->sr_text = "Rewrite error";
}
rc = LDAP_OTHER;
break;
}
return rc;
}
/*
* I don't like this much, but we need two different
* functions because different heap managers may be
* in use in back-ldap/meta to reduce the amount of
* calls to malloc routines, and some of the free()
* routines may be macros with args
*/
int
rwm_referral_rewrite(
Operation *op,
SlapReply *rs,
void *cookie,
BerVarray a_vals,
BerVarray *pa_nvals )
{
slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
struct ldaprwmap *rwmap =
(struct ldaprwmap *)on->on_bi.bi_private;
int i, last;
dncookie dc;
struct berval dn = BER_BVNULL,
ndn = BER_BVNULL;
assert( a_vals != NULL );
/*
* Rewrite the dn if needed
*/
dc.rwmap = rwmap;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = (char *)cookie;
for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
;
last--;
if ( pa_nvals != NULL ) {
if ( *pa_nvals == NULL ) {
*pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
}
}
for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
struct berval olddn = BER_BVNULL,
oldval;
int rc;
LDAPURLDesc *ludp;
oldval = a_vals[i];
rc = ldap_url_parse( oldval.bv_val, &ludp );
if ( rc != LDAP_URL_SUCCESS ) {
/* leave attr untouched if massage failed */
if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
ber_dupbv( &(*pa_nvals)[i], &oldval );
}
continue;
}
/* FIXME: URLs like "ldap:///dc=suffix" if passed
* thru ldap_url_parse() and ldap_url_desc2str()
* get rewritten as "ldap:///dc=suffix??base";
* we don't want this to occur... */
if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
ludp->lud_scope = LDAP_SCOPE_DEFAULT;
}
ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
dn = olddn;
if ( pa_nvals ) {
ndn = olddn;
rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
&dn, &ndn );
} else {
rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
}
switch ( rc ) {
case LDAP_UNWILLING_TO_PERFORM:
/*
* FIXME: need to check if it may be considered
* legal to trim values when adding/modifying;
* it should be when searching (e.g. ACLs).
*/
ch_free( a_vals[i].bv_val );
if (last > i ) {
a_vals[i] = a_vals[last];
if ( pa_nvals ) {
(*pa_nvals)[i] = (*pa_nvals)[last];
}
}
BER_BVZERO( &a_vals[last] );
if ( pa_nvals ) {
BER_BVZERO( &(*pa_nvals)[last] );
}
last--;
break;
case LDAP_SUCCESS:
if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
char *newurl;
ludp->lud_dn = dn.bv_val;
newurl = ldap_url_desc2str( ludp );
ludp->lud_dn = olddn.bv_val;
ch_free( dn.bv_val );
if ( newurl == NULL ) {
/* FIXME: leave attr untouched
* even if ldap_url_desc2str failed...
*/
break;
}
ber_str2bv( newurl, 0, 1, &a_vals[i] );
LDAP_FREE( newurl );
if ( pa_nvals ) {
ludp->lud_dn = ndn.bv_val;
newurl = ldap_url_desc2str( ludp );
ludp->lud_dn = olddn.bv_val;
ch_free( ndn.bv_val );
if ( newurl == NULL ) {
/* FIXME: leave attr untouched
* even if ldap_url_desc2str failed...
*/
ch_free( a_vals[i].bv_val );
a_vals[i] = oldval;
break;
}
if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
ch_free( (*pa_nvals)[i].bv_val );
}
ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
LDAP_FREE( newurl );
}
ch_free( oldval.bv_val );
ludp->lud_dn = olddn.bv_val;
}
break;
default:
/* leave attr untouched if massage failed */
if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
}
break;
}
ldap_free_urldesc( ludp );
}
return 0;
}
/*
* I don't like this much, but we need two different
* functions because different heap managers may be
* in use in back-ldap/meta to reduce the amount of
* calls to malloc routines, and some of the free()
* routines may be macros with args
*/
int
rwm_dnattr_rewrite(
Operation *op,
SlapReply *rs,
void *cookie,
BerVarray a_vals,
BerVarray *pa_nvals )
{
slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
struct ldaprwmap *rwmap =
(struct ldaprwmap *)on->on_bi.bi_private;
int i, last;
dncookie dc;
struct berval dn = BER_BVNULL,
ndn = BER_BVNULL;
BerVarray in;
if ( a_vals ) {
in = a_vals;
} else {
if ( pa_nvals == NULL || *pa_nvals == NULL ) {
return LDAP_OTHER;
}
in = *pa_nvals;
}
/*
* Rewrite the dn if needed
*/
dc.rwmap = rwmap;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = (char *)cookie;
for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
last--;
if ( pa_nvals != NULL ) {
if ( *pa_nvals == NULL ) {
*pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
}
}
for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
int rc;
if ( a_vals ) {
dn = in[i];
if ( pa_nvals ) {
ndn = (*pa_nvals)[i];
rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
} else {
rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
}
} else {
ndn = in[i];
rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
}
switch ( rc ) {
case LDAP_UNWILLING_TO_PERFORM:
/*
* FIXME: need to check if it may be considered
* legal to trim values when adding/modifying;
* it should be when searching (e.g. ACLs).
*/
ch_free( in[i].bv_val );
if (last > i ) {
in[i] = in[last];
if ( a_vals && pa_nvals ) {
(*pa_nvals)[i] = (*pa_nvals)[last];
}
}
BER_BVZERO( &in[last] );
if ( a_vals && pa_nvals ) {
BER_BVZERO( &(*pa_nvals)[last] );
}
last--;
break;
case LDAP_SUCCESS:
if ( a_vals ) {
if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
ch_free( a_vals[i].bv_val );
a_vals[i] = dn;
if ( pa_nvals ) {
if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
ch_free( (*pa_nvals)[i].bv_val );
}
(*pa_nvals)[i] = ndn;
}
}
} else {
if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
ch_free( (*pa_nvals)[i].bv_val );
(*pa_nvals)[i] = ndn;
}
}
break;
default:
/* leave attr untouched if massage failed */
if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
}
break;
}
}
return 0;
}
int
rwm_referral_result_rewrite(
dncookie *dc,
BerVarray a_vals )
{
int i, last;
for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
last--;
for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
struct berval dn,
olddn = BER_BVNULL;
int rc;
LDAPURLDesc *ludp;
rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
if ( rc != LDAP_URL_SUCCESS ) {
/* leave attr untouched if massage failed */
continue;
}
/* FIXME: URLs like "ldap:///dc=suffix" if passed
* thru ldap_url_parse() and ldap_url_desc2str()
* get rewritten as "ldap:///dc=suffix??base";
* we don't want this to occur... */
if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
ludp->lud_scope = LDAP_SCOPE_DEFAULT;
}
ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
dn = olddn;
rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
switch ( rc ) {
case LDAP_UNWILLING_TO_PERFORM:
/*
* FIXME: need to check if it may be considered
* legal to trim values when adding/modifying;
* it should be when searching (e.g. ACLs).
*/
ch_free( a_vals[i].bv_val );
if ( last > i ) {
a_vals[i] = a_vals[last];
}
BER_BVZERO( &a_vals[last] );
last--;
i--;
break;
default:
/* leave attr untouched if massage failed */
if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
char *newurl;
ludp->lud_dn = dn.bv_val;
newurl = ldap_url_desc2str( ludp );
if ( newurl == NULL ) {
/* FIXME: leave attr untouched
* even if ldap_url_desc2str failed...
*/
break;
}
ch_free( a_vals[i].bv_val );
ber_str2bv( newurl, 0, 1, &a_vals[i] );
LDAP_FREE( newurl );
ludp->lud_dn = olddn.bv_val;
}
break;
}
ldap_free_urldesc( ludp );
}
return 0;
}
int
rwm_dnattr_result_rewrite(
dncookie *dc,
BerVarray a_vals,
BerVarray a_nvals )
{
int i, last;
for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
last--;
for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
struct berval pdn, ndn = BER_BVNULL;
int rc;
pdn = a_vals[i];
rc = rwm_dn_massage_pretty_normalize( dc, &a_vals[i], &pdn, &ndn );
switch ( rc ) {
case LDAP_UNWILLING_TO_PERFORM:
/*
* FIXME: need to check if it may be considered
* legal to trim values when adding/modifying;
* it should be when searching (e.g. ACLs).
*/
assert( a_vals[i].bv_val != a_nvals[i].bv_val );
ch_free( a_vals[i].bv_val );
ch_free( a_nvals[i].bv_val );
if ( last > i ) {
a_vals[i] = a_vals[last];
a_nvals[i] = a_nvals[last];
}
BER_BVZERO( &a_vals[last] );
BER_BVZERO( &a_nvals[last] );
last--;
break;
default:
/* leave attr untouched if massage failed */
if ( !BER_BVISNULL( &pdn ) && a_vals[i].bv_val != pdn.bv_val ) {
ch_free( a_vals[i].bv_val );
a_vals[i] = pdn;
}
if ( !BER_BVISNULL( &ndn ) && a_nvals[i].bv_val != ndn.bv_val ) {
ch_free( a_nvals[i].bv_val );
a_nvals[i] = ndn;
}
break;
}
}
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 )
{
struct ldapmapping *mapping = v_mapping;
if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
ch_free( mapping[0].m_src.bv_val );
}
if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
if ( mapping[0].m_src_oc ) {
ch_free( mapping[0].m_src_oc );
}
} else {
if ( mapping[0].m_src_ad ) {
ch_free( mapping[0].m_src_ad );
}
}
}
if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
ch_free( mapping[0].m_dst.bv_val );
}
if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
if ( mapping[0].m_dst_oc ) {
ch_free( mapping[0].m_dst_oc );
}
} else {
if ( mapping[0].m_dst_ad ) {
ch_free( mapping[0].m_dst_ad );
}
}
}
ch_free( mapping );
}
#endif /* SLAPD_OVER_RWM */
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