diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
commit | 7731832751ab9f3c6ddeb66f186d3d7fa1934a6d (patch) | |
tree | e91015872543a59be2aad26c2fea02e41b57005d /contrib/slapd-modules/samba4/vernum.c | |
parent | Initial commit. (diff) | |
download | openldap-upstream/2.4.57+dfsg.tar.xz openldap-upstream/2.4.57+dfsg.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 '')
-rw-r--r-- | contrib/slapd-modules/samba4/vernum.c | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/contrib/slapd-modules/samba4/vernum.c b/contrib/slapd-modules/samba4/vernum.c new file mode 100644 index 0000000..6035d86 --- /dev/null +++ b/contrib/slapd-modules/samba4/vernum.c @@ -0,0 +1,459 @@ +/* vernum.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_VERNUM + +#include <stdio.h> + +#include "ac/string.h" +#include "ac/socket.h" + +#include "slap.h" +#include "config.h" + +#include "lutil.h" + +/* + * Maintain an attribute (e.g. msDS-KeyVersionNumber) that consists + * in a counter of modifications of another attribute (e.g. unicodePwd). + */ + +typedef struct vernum_t { + AttributeDescription *vn_attr; + AttributeDescription *vn_vernum; +} vernum_t; + +static AttributeDescription *ad_msDS_KeyVersionNumber; + +static struct berval val_init = BER_BVC( "0" ); +static slap_overinst vernum; + +static int +vernum_op_add( Operation *op, SlapReply *rs ) +{ + slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; + vernum_t *vn = (vernum_t *)on->on_bi.bi_private; + + Attribute *a, **ap; + 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, vn->vn_attr ); + if ( a == NULL ) { + return SLAP_CB_CONTINUE; + } + + if ( attr_find( op->ora_e->e_attrs, vn->vn_vernum ) != NULL ) { + /* already present - leave it alone */ + return SLAP_CB_CONTINUE; + } + + a = attr_alloc( vn->vn_vernum ); + + value_add_one( &a->a_vals, &val_init ); + a->a_nvals = a->a_vals; + a->a_numvals = 1; + + for ( ap = &op->ora_e->e_attrs; *ap != NULL; ap = &(*ap)->a_next ) + /* goto tail */ ; + + *ap = a; + + return SLAP_CB_CONTINUE; +} + +static int +vernum_op_modify( Operation *op, SlapReply *rs ) +{ + slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; + vernum_t *vn = (vernum_t *)on->on_bi.bi_private; + + Modifications *ml, **mlp; + struct berval val = BER_BVC( "1" ); + int rc; + unsigned got = 0; + + for ( ml = op->orm_modlist; ml != NULL; ml = ml->sml_next ) { + if ( ml->sml_desc == vn->vn_vernum ) { + /* already present - leave it alone + * (or should we increment it anyway?) */ + return SLAP_CB_CONTINUE; + } + + if ( ml->sml_desc == vn->vn_attr ) { + got = 1; + } + } + + if ( !got ) { + return SLAP_CB_CONTINUE; + } + + for ( mlp = &op->orm_modlist; *mlp != NULL; mlp = &(*mlp)->sml_next ) + /* goto tail */ ; + + /* ITS#6561 */ +#ifdef SLAP_MOD_ADD_IF_NOT_PRESENT + /* the initial value is only added if the vernum attr is not present */ + ml = SLAP_CALLOC( sizeof( Modifications ), 1 ); + ml->sml_values = SLAP_CALLOC( sizeof( struct berval ) , 2 ); + value_add_one( &ml->sml_values, &val_init ); + ml->sml_nvalues = NULL; + ml->sml_numvals = 1; + ml->sml_op = SLAP_MOD_ADD_IF_NOT_PRESENT; + ml->sml_flags = SLAP_MOD_INTERNAL; + ml->sml_desc = vn->vn_vernum; + ml->sml_type = vn->vn_vernum->ad_cname; + + *mlp = ml; + mlp = &ml->sml_next; +#endif /* SLAP_MOD_ADD_IF_NOT_PRESENT */ + + /* this increments by 1 the vernum attr */ + ml = SLAP_CALLOC( sizeof( Modifications ), 1 ); + ml->sml_values = SLAP_CALLOC( sizeof( struct berval ) , 2 ); + value_add_one( &ml->sml_values, &val ); + ml->sml_nvalues = NULL; + ml->sml_numvals = 1; + ml->sml_op = LDAP_MOD_INCREMENT; + ml->sml_flags = SLAP_MOD_INTERNAL; + ml->sml_desc = vn->vn_vernum; + ml->sml_type = vn->vn_vernum->ad_cname; + + *mlp = ml; + + return SLAP_CB_CONTINUE; +} + +static int +vernum_db_init( + BackendDB *be, + ConfigReply *cr) +{ + slap_overinst *on = (slap_overinst *) be->bd_info; + vernum_t *vn = NULL; + + if ( SLAP_ISGLOBALOVERLAY( be ) ) { + Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "vernum_db_init: vernum cannot be used as global overlay.\n" ); + return 1; + } + + if ( be->be_nsuffix == NULL ) { + Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "vernum_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, + "vernum_db_init: missing rootdn for database DN=\"%s\", YMMV\n", + be->be_suffix[ 0 ].bv_val ); + } + + vn = (vernum_t *)ch_calloc( 1, sizeof( vernum_t ) ); + + on->on_bi.bi_private = (void *)vn; + + return 0; +} + +typedef struct vernum_mod_t { + struct berval ndn; + struct vernum_mod_t *next; +} vernum_mod_t; + +typedef struct { + BackendDB *bd; + vernum_mod_t *mods; +} vernum_repair_cb_t; + +static int +vernum_repair_cb( Operation *op, SlapReply *rs ) +{ + int rc; + vernum_repair_cb_t *rcb = op->o_callback->sc_private; + vernum_mod_t *mod; + 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 ); + + len = sizeof( vernum_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->next = rcb->mods; + rcb->mods = mod; + + Debug( LDAP_DEBUG_TRACE, "%s: vernum_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 +vernum_repair( BackendDB *be ) +{ + slap_overinst *on = (slap_overinst *)be->bd_info; + vernum_t *vn = (vernum_t *)on->on_bi.bi_private; + void *ctx = ldap_pvt_thread_pool_context(); + Connection conn = { 0 }; + OperationBuffer opbuf; + Operation *op; + BackendDB db; + slap_callback sc = { 0 }; + vernum_repair_cb_t rcb = { 0 }; + SlapReply rs = { REP_RESULT }; + vernum_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( "(&(=*)(!(=*)))" ) + + vn->vn_attr->ad_cname.bv_len + + vn->vn_vernum->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=*)(!(%s=*)))", + vn->vn_attr->ad_cname.bv_val, + vn->vn_vernum->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 = vernum_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; ) { + vernum_mod_t *rnext; + Modifications mod; + struct berval vals[2] = { BER_BVNULL }; + SlapReply rs2 = { REP_RESULT }; + + mod.sml_flags = SLAP_MOD_INTERNAL; + mod.sml_op = LDAP_MOD_REPLACE; + mod.sml_desc = vn->vn_vernum; + mod.sml_type = vn->vn_vernum->ad_cname; + mod.sml_values = vals; + mod.sml_values[0] = val_init; + mod.sml_nvalues = NULL; + mod.sml_numvals = 1; + 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->sml_next, 1 ); + if ( rs2.sr_err == LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, "%s: vernum_repair: entry DN=\"%s\" repaired\n", + op->o_log_prefix, rmod->ndn.bv_val, 0 ); + nrepaired++; + + } else { + Debug( LDAP_DEBUG_ANY, "%s: vernum_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, + "vernum: repaired=%d\n", nrepaired ); + + return 0; +} + +static int +vernum_db_open( + BackendDB *be, + ConfigReply *cr ) +{ + slap_overinst *on = (slap_overinst *)be->bd_info; + vernum_t *vn = (vernum_t *)on->on_bi.bi_private; + + if ( SLAP_SINGLE_SHADOW( be ) ) { + Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, + "vernum incompatible with shadow database \"%s\".\n", + be->be_suffix[ 0 ].bv_val ); + return 1; + } + + /* default: unicodePwd & msDS-KeyVersionNumber */ + if ( vn->vn_attr == NULL ) { + const char *text = NULL; + int rc; + + rc = slap_str2ad( "unicodePwd", &vn->vn_attr, &text ); + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "vernum: unable to find attribute 'unicodePwd' (%d: %s)\n", + rc, text, 0 ); + return 1; + } + + vn->vn_vernum = ad_msDS_KeyVersionNumber; + } + + return vernum_repair( be ); +} + +static int +vernum_db_destroy( + BackendDB *be, + ConfigReply *cr ) +{ + slap_overinst *on = (slap_overinst *)be->bd_info; + vernum_t *vn = (vernum_t *)on->on_bi.bi_private; + + if ( vn ) { + ch_free( vn ); + on->on_bi.bi_private = NULL; + } + + return 0; +} + +static struct { + char *desc; + AttributeDescription **adp; +} as[] = { + { "( 1.2.840.113556.1.4.1782 " + "NAME 'msDS-KeyVersionNumber' " + "DESC 'in the original specification the syntax is 2.5.5.9' " + "SYNTAX '1.3.6.1.4.1.1466.115.121.1.27' " + "EQUALITY integerMatch " + "SINGLE-VALUE " + "USAGE dSAOperation " + "NO-USER-MODIFICATION " + ")", + &ad_msDS_KeyVersionNumber }, + { NULL } +}; + +int +vernum_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, + "vernum_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; + } + } + + vernum.on_bi.bi_type = "vernum"; + + vernum.on_bi.bi_op_add = vernum_op_add; + vernum.on_bi.bi_op_modify = vernum_op_modify; + + vernum.on_bi.bi_db_init = vernum_db_init; + vernum.on_bi.bi_db_open = vernum_db_open; + vernum.on_bi.bi_db_destroy = vernum_db_destroy; + + return overlay_register( &vernum ); +} + +#if SLAPD_OVER_VERNUM == SLAPD_MOD_DYNAMIC +int +init_module( int argc, char *argv[] ) +{ + return vernum_initialize(); +} +#endif /* SLAPD_OVER_VERNUM == SLAPD_MOD_DYNAMIC */ + +#endif /* SLAPD_OVER_VERNUM */ |