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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
commit | 7731832751ab9f3c6ddeb66f186d3d7fa1934a6d (patch) | |
tree | e91015872543a59be2aad26c2fea02e41b57005d /contrib/slapd-modules/samba4/rdnval.c | |
parent | Initial commit. (diff) | |
download | openldap-7731832751ab9f3c6ddeb66f186d3d7fa1934a6d.tar.xz openldap-7731832751ab9f3c6ddeb66f186d3d7fa1934a6d.zip |
Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'contrib/slapd-modules/samba4/rdnval.c')
-rw-r--r-- | contrib/slapd-modules/samba4/rdnval.c | 658 |
1 files changed, 658 insertions, 0 deletions
diff --git a/contrib/slapd-modules/samba4/rdnval.c b/contrib/slapd-modules/samba4/rdnval.c new file mode 100644 index 0000000..95b2d4f --- /dev/null +++ b/contrib/slapd-modules/samba4/rdnval.c @@ -0,0 +1,658 @@ +/* rdnval.c - RDN value overlay */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2021 The OpenLDAP Foundation. + * Portions Copyright 2008 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 Pierangelo Masarati + * for inclusion in OpenLDAP Software. + */ + +#include "portable.h" + +#ifdef SLAPD_OVER_RDNVAL + +#include <stdio.h> + +#include "ac/string.h" +#include "ac/socket.h" + +#include "slap.h" +#include "config.h" + +#include "lutil.h" + +/* + * Maintain an attribute (rdnValue) that contains the values of each AVA + * that builds up the RDN of an entry. This is required for interoperation + * with Samba4. It mimics the "name" attribute provided by Active Directory. + * The naming attributes must be directoryString-valued, or compatible. + * For example, IA5String values are cast into directoryString unless + * consisting of the empty string (""). + */ + +static AttributeDescription *ad_rdnValue; +static Syntax *syn_IA5String; + +static slap_overinst rdnval; + +static int +rdnval_is_valid( AttributeDescription *desc, struct berval *value ) +{ + if ( desc->ad_type->sat_syntax == slap_schema.si_syn_directoryString ) { + return 1; + } + + if ( desc->ad_type->sat_syntax == syn_IA5String + && !BER_BVISEMPTY( value ) ) + { + return 1; + } + + return 0; +} + +static int +rdnval_unique_check_cb( Operation *op, SlapReply *rs ) +{ + if ( rs->sr_type == REP_SEARCH ) { + int *p = (int *)op->o_callback->sc_private; + (*p)++; + } + + return 0; +} + +static int +rdnval_unique_check( Operation *op, BerVarray vals ) +{ + slap_overinst *on = (slap_overinst *)op->o_bd->bd_info; + + BackendDB db = *op->o_bd; + Operation op2 = *op; + SlapReply rs2 = { 0 }; + int i; + BerVarray fvals; + char *ptr; + int gotit = 0; + slap_callback cb = { 0 }; + + /* short-circuit attempts to add suffix entry */ + if ( op->o_tag == LDAP_REQ_ADD + && be_issuffix( op->o_bd, &op->o_req_ndn ) ) + { + return LDAP_SUCCESS; + } + + op2.o_bd = &db; + op2.o_bd->bd_info = (BackendInfo *)on->on_info; + op2.o_tag = LDAP_REQ_SEARCH; + op2.o_dn = op->o_bd->be_rootdn; + op2.o_ndn = op->o_bd->be_rootndn; + op2.o_callback = &cb; + cb.sc_response = rdnval_unique_check_cb; + cb.sc_private = (void *)&gotit; + + dnParent( &op->o_req_ndn, &op2.o_req_dn ); + op2.o_req_ndn = op2.o_req_dn; + + op2.ors_limit = NULL; + op2.ors_slimit = 1; + op2.ors_tlimit = SLAP_NO_LIMIT; + op2.ors_attrs = slap_anlist_no_attrs; + op2.ors_attrsonly = 1; + op2.ors_deref = LDAP_DEREF_NEVER; + op2.ors_scope = LDAP_SCOPE_ONELEVEL; + + for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) + /* just count */ ; + + fvals = op->o_tmpcalloc( sizeof( struct berval ), i + 1, + op->o_tmpmemctx ); + + op2.ors_filterstr.bv_len = 0; + if ( i > 1 ) { + op2.ors_filterstr.bv_len = STRLENOF( "(&)" ); + } + + for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) { + ldap_bv2escaped_filter_value_x( &vals[ i ], &fvals[ i ], + 1, op->o_tmpmemctx ); + op2.ors_filterstr.bv_len += ad_rdnValue->ad_cname.bv_len + + fvals[ i ].bv_len + STRLENOF( "(=)" ); + } + + op2.ors_filterstr.bv_val = op->o_tmpalloc( op2.ors_filterstr.bv_len + 1, op->o_tmpmemctx ); + + ptr = op2.ors_filterstr.bv_val; + if ( i > 1 ) { + ptr = lutil_strcopy( ptr, "(&" ); + } + for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) { + *ptr++ = '('; + ptr = lutil_strncopy( ptr, ad_rdnValue->ad_cname.bv_val, ad_rdnValue->ad_cname.bv_len ); + *ptr++ = '='; + ptr = lutil_strncopy( ptr, fvals[ i ].bv_val, fvals[ i ].bv_len ); + *ptr++ = ')'; + } + + if ( i > 1 ) { + *ptr++ = ')'; + } + *ptr = '\0'; + + assert( ptr == op2.ors_filterstr.bv_val + op2.ors_filterstr.bv_len ); + op2.ors_filter = str2filter_x( op, op2.ors_filterstr.bv_val ); + assert( op2.ors_filter != NULL ); + + (void)op2.o_bd->be_search( &op2, &rs2 ); + + filter_free_x( op, op2.ors_filter, 1 ); + op->o_tmpfree( op2.ors_filterstr.bv_val, op->o_tmpmemctx ); + for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) { + if ( vals[ i ].bv_val != fvals[ i ].bv_val ) { + op->o_tmpfree( fvals[ i ].bv_val, op->o_tmpmemctx ); + } + } + op->o_tmpfree( fvals, op->o_tmpmemctx ); + + if ( rs2.sr_err != LDAP_SUCCESS || gotit > 0 ) { + return LDAP_CONSTRAINT_VIOLATION; + } + + return LDAP_SUCCESS; +} + +static int +rdnval_rdn2vals( + Operation *op, + SlapReply *rs, + struct berval *dn, + struct berval *ndn, + BerVarray *valsp, + BerVarray *nvalsp, + int *numvalsp ) +{ + LDAPRDN rdn = NULL, nrdn = NULL; + int nAVA, i; + + assert( *valsp == NULL ); + assert( *nvalsp == NULL ); + + *numvalsp = 0; + + if ( ldap_bv2rdn_x( dn, &rdn, (char **)&rs->sr_text, + LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) + { + Debug( LDAP_DEBUG_TRACE, + "%s rdnval: can't figure out " + "type(s)/value(s) of rdn DN=\"%s\"\n", + op->o_log_prefix, dn->bv_val, 0 ); + rs->sr_err = LDAP_INVALID_DN_SYNTAX; + rs->sr_text = "unknown type(s) used in RDN"; + + goto done; + } + + if ( ldap_bv2rdn_x( ndn, &nrdn, + (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) + { + Debug( LDAP_DEBUG_TRACE, + "%s rdnval: can't figure out " + "type(s)/value(s) of normalized rdn DN=\"%s\"\n", + op->o_log_prefix, ndn->bv_val, 0 ); + rs->sr_err = LDAP_INVALID_DN_SYNTAX; + rs->sr_text = "unknown type(s) used in RDN"; + + goto done; + } + + for ( nAVA = 0; rdn[ nAVA ]; nAVA++ ) + /* count'em */ ; + + /* NOTE: we assume rdn and nrdn contain the same AVAs! */ + + *valsp = SLAP_CALLOC( sizeof( struct berval ), nAVA + 1 ); + *nvalsp = SLAP_CALLOC( sizeof( struct berval ), nAVA + 1 ); + + /* Add new attribute values to the entry */ + for ( i = 0; rdn[ i ]; i++ ) { + AttributeDescription *desc = NULL; + + rs->sr_err = slap_bv2ad( &rdn[ i ]->la_attr, + &desc, &rs->sr_text ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + "%s rdnval: %s: %s\n", + op->o_log_prefix, + rs->sr_text, + rdn[ i ]->la_attr.bv_val ); + goto done; + } + + if ( !rdnval_is_valid( desc, &rdn[ i ]->la_value ) ) { + Debug( LDAP_DEBUG_TRACE, + "%s rdnval: syntax of naming attribute '%s' " + "not compatible with directoryString", + op->o_log_prefix, rdn[ i ]->la_attr.bv_val, 0 ); + continue; + } + + if ( value_find_ex( desc, + SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH | + SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH, + *nvalsp, + &nrdn[ i ]->la_value, + op->o_tmpmemctx ) + == LDAP_NO_SUCH_ATTRIBUTE ) + { + ber_dupbv( &(*valsp)[ *numvalsp ], &rdn[ i ]->la_value ); + ber_dupbv( &(*nvalsp)[ *numvalsp ], &nrdn[ i ]->la_value ); + + (*numvalsp)++; + } + } + + if ( rdnval_unique_check( op, *valsp ) != LDAP_SUCCESS ) { + rs->sr_err = LDAP_CONSTRAINT_VIOLATION; + rs->sr_text = "rdnValue not unique within siblings"; + goto done; + } + +done:; + if ( rdn != NULL ) { + ldap_rdnfree_x( rdn, op->o_tmpmemctx ); + } + + if ( nrdn != NULL ) { + ldap_rdnfree_x( nrdn, op->o_tmpmemctx ); + } + + if ( rs->sr_err != LDAP_SUCCESS ) { + if ( *valsp != NULL ) { + ber_bvarray_free( *valsp ); + ber_bvarray_free( *nvalsp ); + *valsp = NULL; + *nvalsp = NULL; + *numvalsp = 0; + } + } + + return rs->sr_err; +} + +static int +rdnval_op_add( Operation *op, SlapReply *rs ) +{ + Attribute *a, **ap; + int numvals = 0; + BerVarray vals = NULL, nvals = NULL; + int rc; + + /* NOTE: should we accept an entry still in mods format? */ + assert( op->ora_e != NULL ); + + if ( BER_BVISEMPTY( &op->ora_e->e_nname ) ) { + return SLAP_CB_CONTINUE; + } + + a = attr_find( op->ora_e->e_attrs, ad_rdnValue ); + if ( a != NULL ) { + /* TODO: check consistency? */ + return SLAP_CB_CONTINUE; + } + + rc = rdnval_rdn2vals( op, rs, &op->ora_e->e_name, &op->ora_e->e_nname, + &vals, &nvals, &numvals ); + if ( rc != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + } + + a = attr_alloc( ad_rdnValue ); + + a->a_vals = vals; + a->a_nvals = nvals; + a->a_numvals = numvals; + + for ( ap = &op->ora_e->e_attrs; *ap != NULL; ap = &(*ap)->a_next ) + /* goto tail */ ; + + *ap = a; + + return SLAP_CB_CONTINUE; +} + +static int +rdnval_op_rename( Operation *op, SlapReply *rs ) +{ + Modifications *ml, **mlp; + int numvals = 0; + BerVarray vals = NULL, nvals = NULL; + struct berval old; + int rc; + + dnRdn( &op->o_req_ndn, &old ); + if ( dn_match( &old, &op->orr_nnewrdn ) ) { + return SLAP_CB_CONTINUE; + } + + rc = rdnval_rdn2vals( op, rs, &op->orr_newrdn, &op->orr_nnewrdn, + &vals, &nvals, &numvals ); + if ( rc != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + } + + ml = SLAP_CALLOC( sizeof( Modifications ), 1 ); + ml->sml_values = vals; + ml->sml_nvalues = nvals; + + ml->sml_numvals = numvals; + + ml->sml_op = LDAP_MOD_REPLACE; + ml->sml_flags = SLAP_MOD_INTERNAL; + ml->sml_desc = ad_rdnValue; + ml->sml_type = ad_rdnValue->ad_cname; + + for ( mlp = &op->orr_modlist; *mlp != NULL; mlp = &(*mlp)->sml_next ) + /* goto tail */ ; + + *mlp = ml; + + return SLAP_CB_CONTINUE; +} + +static int +rdnval_db_init( + BackendDB *be, + ConfigReply *cr) +{ + if ( SLAP_ISGLOBALOVERLAY( be ) ) { + Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "rdnval_db_init: rdnval cannot be used as global overlay.\n" ); + return 1; + } + + if ( be->be_nsuffix == NULL ) { + Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "rdnval_db_init: database must have suffix\n" ); + return 1; + } + + if ( BER_BVISNULL( &be->be_rootndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) { + Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "rdnval_db_init: missing rootdn for database DN=\"%s\", YMMV\n", + be->be_suffix[ 0 ].bv_val ); + } + + return 0; +} + +typedef struct rdnval_mod_t { + struct berval ndn; + BerVarray vals; + BerVarray nvals; + int numvals; + struct rdnval_mod_t *next; +} rdnval_mod_t; + +typedef struct { + BackendDB *bd; + rdnval_mod_t *mods; +} rdnval_repair_cb_t; + +static int +rdnval_repair_cb( Operation *op, SlapReply *rs ) +{ + int rc; + rdnval_repair_cb_t *rcb = op->o_callback->sc_private; + rdnval_mod_t *mod; + BerVarray vals = NULL, nvals = NULL; + int numvals = 0; + ber_len_t len; + BackendDB *save_bd = op->o_bd; + + switch ( rs->sr_type ) { + case REP_SEARCH: + break; + + case REP_SEARCHREF: + case REP_RESULT: + return rs->sr_err; + + default: + assert( 0 ); + } + + assert( rs->sr_entry != NULL ); + + op->o_bd = rcb->bd; + rc = rdnval_rdn2vals( op, rs, &rs->sr_entry->e_name, &rs->sr_entry->e_nname, + &vals, &nvals, &numvals ); + op->o_bd = save_bd; + if ( rc != LDAP_SUCCESS ) { + return 0; + } + + len = sizeof( rdnval_mod_t ) + rs->sr_entry->e_nname.bv_len + 1; + mod = op->o_tmpalloc( len, op->o_tmpmemctx ); + mod->ndn.bv_len = rs->sr_entry->e_nname.bv_len; + mod->ndn.bv_val = (char *)&mod[1]; + lutil_strncopy( mod->ndn.bv_val, rs->sr_entry->e_nname.bv_val, rs->sr_entry->e_nname.bv_len ); + mod->vals = vals; + mod->nvals = nvals; + mod->numvals = numvals; + + mod->next = rcb->mods; + rcb->mods = mod; + + Debug( LDAP_DEBUG_TRACE, "%s: rdnval_repair_cb: scheduling entry DN=\"%s\" for repair\n", + op->o_log_prefix, rs->sr_entry->e_name.bv_val, 0 ); + + return 0; +} + +static int +rdnval_repair( BackendDB *be ) +{ + slap_overinst *on = (slap_overinst *)be->bd_info; + void *ctx = ldap_pvt_thread_pool_context(); + Connection conn = { 0 }; + OperationBuffer opbuf; + Operation *op; + BackendDB db; + slap_callback sc = { 0 }; + rdnval_repair_cb_t rcb = { 0 }; + SlapReply rs = { REP_RESULT }; + rdnval_mod_t *rmod; + int nrepaired = 0; + + connection_fake_init2( &conn, &opbuf, ctx, 0 ); + op = &opbuf.ob_op; + + op->o_tag = LDAP_REQ_SEARCH; + memset( &op->oq_search, 0, sizeof( op->oq_search ) ); + + assert( !BER_BVISNULL( &be->be_nsuffix[ 0 ] ) ); + + op->o_bd = select_backend( &be->be_nsuffix[ 0 ], 0 ); + assert( op->o_bd != NULL ); + assert( op->o_bd->be_nsuffix != NULL ); + + op->o_req_dn = op->o_bd->be_suffix[ 0 ]; + op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ]; + + op->o_dn = op->o_bd->be_rootdn; + op->o_ndn = op->o_bd->be_rootndn; + + op->ors_scope = LDAP_SCOPE_SUBTREE; + op->ors_tlimit = SLAP_NO_LIMIT; + op->ors_slimit = SLAP_NO_LIMIT; + op->ors_attrs = slap_anlist_no_attrs; + + op->ors_filterstr.bv_len = STRLENOF( "(!(=*))" ) + ad_rdnValue->ad_cname.bv_len; + op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx ); + snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1, + "(!(%s=*))", ad_rdnValue->ad_cname.bv_val ); + + op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val ); + if ( op->ors_filter == NULL ) { + rs.sr_err = LDAP_OTHER; + goto done_search; + } + + op->o_callback = ≻ + sc.sc_response = rdnval_repair_cb; + sc.sc_private = &rcb; + rcb.bd = &db; + db = *be; + db.bd_info = (BackendInfo *)on; + + (void)op->o_bd->bd_info->bi_op_search( op, &rs ); + + op->o_tag = LDAP_REQ_MODIFY; + sc.sc_response = slap_null_cb; + sc.sc_private = NULL; + memset( &op->oq_modify, 0, sizeof( req_modify_s ) ); + + for ( rmod = rcb.mods; rmod != NULL; ) { + rdnval_mod_t *rnext; + + Modifications *mod; + SlapReply rs2 = { REP_RESULT }; + + mod = (Modifications *) ch_malloc( sizeof( Modifications ) ); + mod->sml_flags = SLAP_MOD_INTERNAL; + mod->sml_op = LDAP_MOD_REPLACE; + mod->sml_desc = ad_rdnValue; + mod->sml_type = ad_rdnValue->ad_cname; + mod->sml_values = rmod->vals; + mod->sml_nvalues = rmod->nvals; + mod->sml_numvals = rmod->numvals; + mod->sml_next = NULL; + + op->o_req_dn = rmod->ndn; + op->o_req_ndn = rmod->ndn; + + op->orm_modlist = mod; + + op->o_bd->be_modify( op, &rs2 ); + + slap_mods_free( op->orm_modlist, 1 ); + if ( rs2.sr_err == LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, "%s: rdnval_repair: entry DN=\"%s\" repaired\n", + op->o_log_prefix, rmod->ndn.bv_val, 0 ); + nrepaired++; + + } else { + Debug( LDAP_DEBUG_ANY, "%s: rdnval_repair: entry DN=\"%s\" repair failed (%d)\n", + op->o_log_prefix, rmod->ndn.bv_val, rs2.sr_err ); + } + + rnext = rmod->next; + op->o_tmpfree( rmod, op->o_tmpmemctx ); + rmod = rnext; + } + +done_search:; + op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx ); + filter_free_x( op, op->ors_filter, 1 ); + + Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO, + "rdnval: repaired=%d\n", nrepaired ); + + return 0; +} + +/* search all entries without parentUUID; "repair" them */ +static int +rdnval_db_open( + BackendDB *be, + ConfigReply *cr ) +{ + if ( SLAP_SINGLE_SHADOW( be ) ) { + Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "rdnval incompatible with shadow database \"%s\".\n", + be->be_suffix[ 0 ].bv_val ); + return 1; + } + + return rdnval_repair( be ); +} + +static struct { + char *desc; + AttributeDescription **adp; +} as[] = { + { "( 1.3.6.1.4.1.4203.666.1.58 " + "NAME 'rdnValue' " + "DESC 'the value of the naming attributes' " + "SYNTAX '1.3.6.1.4.1.1466.115.121.1.15' " + "EQUALITY caseIgnoreMatch " + "USAGE dSAOperation " + "NO-USER-MODIFICATION " + ")", + &ad_rdnValue }, + { NULL } +}; + +int +rdnval_initialize(void) +{ + int code, i; + + for ( i = 0; as[ i ].desc != NULL; i++ ) { + code = register_at( as[ i ].desc, as[ i ].adp, 0 ); + if ( code ) { + Debug( LDAP_DEBUG_ANY, + "rdnval_initialize: register_at #%d failed\n", + i, 0, 0 ); + return code; + } + + /* Allow Manager to set these as needed */ + if ( is_at_no_user_mod( (*as[ i ].adp)->ad_type ) ) { + (*as[ i ].adp)->ad_type->sat_flags |= + SLAP_AT_MANAGEABLE; + } + } + + syn_IA5String = syn_find( "1.3.6.1.4.1.1466.115.121.1.26" ); + if ( syn_IA5String == NULL ) { + Debug( LDAP_DEBUG_ANY, + "rdnval_initialize: unable to find syntax '1.3.6.1.4.1.1466.115.121.1.26' (IA5String)\n", + 0, 0, 0 ); + return LDAP_OTHER; + } + + rdnval.on_bi.bi_type = "rdnval"; + + rdnval.on_bi.bi_op_add = rdnval_op_add; + rdnval.on_bi.bi_op_modrdn = rdnval_op_rename; + + rdnval.on_bi.bi_db_init = rdnval_db_init; + rdnval.on_bi.bi_db_open = rdnval_db_open; + + return overlay_register( &rdnval ); +} + +#if SLAPD_OVER_RDNVAL == SLAPD_MOD_DYNAMIC +int +init_module( int argc, char *argv[] ) +{ + return rdnval_initialize(); +} +#endif /* SLAPD_OVER_RDNVAL == SLAPD_MOD_DYNAMIC */ + +#endif /* SLAPD_OVER_RDNVAL */ |