From d7ff03d4be5013391f7cd8c243f099ae73b9626d Mon Sep 17 00:00:00 2001 From: Pierangelo Masarati Date: Sun, 2 May 2004 22:08:12 +0000 Subject: [PATCH] allow consistent modification of readOnly and restrictedOperation attributes --- servers/slapd/back-monitor/database.c | 313 ++++++++++++++++++++++---- 1 file changed, 268 insertions(+), 45 deletions(-) diff --git a/servers/slapd/back-monitor/database.c b/servers/slapd/back-monitor/database.c index 9ea8d1394b..2e13061720 100644 --- a/servers/slapd/back-monitor/database.c +++ b/servers/slapd/back-monitor/database.c @@ -36,10 +36,10 @@ static int monitor_back_add_plugin( Backend *be, Entry *e ); #include "../back-ldap/back-ldap.h" #endif /* defined(SLAPD_LDAP) */ -static struct restrict_ops_t { +static struct restricted_ops_t { struct berval op; unsigned int tag; -} restrict_ops[] = { +} restricted_ops[] = { { BER_BVC( "add" ), SLAP_RESTRICT_OP_ADD }, { BER_BVC( "bind" ), SLAP_RESTRICT_OP_BIND }, { BER_BVC( "compare" ), SLAP_RESTRICT_OP_COMPARE }, @@ -49,7 +49,7 @@ static struct restrict_ops_t { { BER_BVC( "rename" ), SLAP_RESTRICT_OP_RENAME }, { BER_BVC( "search" ), SLAP_RESTRICT_OP_SEARCH }, { BER_BVNULL, 0 } -}, restrict_exops[] = { +}, restricted_exops[] = { { BER_BVC( LDAP_EXOP_START_TLS ), SLAP_RESTRICT_EXOP_START_TLS }, { BER_BVC( LDAP_EXOP_MODIFY_PASSWD ), SLAP_RESTRICT_EXOP_MODIFY_PASSWD }, { BER_BVC( LDAP_EXOP_X_WHO_AM_I ), SLAP_RESTRICT_EXOP_WHOAMI }, @@ -71,20 +71,20 @@ init_restrictedOperation( struct monitorinfo *mi, Entry *e, slap_mask_t restrict { int i, rc; - for ( i = 0; restrict_ops[ i ].op.bv_val; i++ ) { - if ( restrictops & restrict_ops[ i ].tag ) { + for ( i = 0; restricted_ops[ i ].op.bv_val; i++ ) { + if ( restrictops & restricted_ops[ i ].tag ) { rc = attr_merge_one( e, mi->mi_ad_restrictedOperation, - &restrict_ops[ i ].op, &restrict_ops[ i ].op ); + &restricted_ops[ i ].op, &restricted_ops[ i ].op ); if ( rc ) { return rc; } } } - for ( i = 0; restrict_exops[ i ].op.bv_val; i++ ) { - if ( restrictops & restrict_exops[ i ].tag ) { + for ( i = 0; restricted_exops[ i ].op.bv_val; i++ ) { + if ( restrictops & restricted_exops[ i ].tag ) { rc = attr_merge_one( e, mi->mi_ad_restrictedOperation, - &restrict_exops[ i ].op, &restrict_exops[ i ].op ); + &restricted_exops[ i ].op, &restricted_exops[ i ].op ); if ( rc ) { return rc; } @@ -300,6 +300,52 @@ monitor_subsys_database_init( return( 0 ); } +/* + * v: array of values + * cur: must not contain the tags corresponding to the values in v + * delta: will contain the tags corresponding to the values in v + */ +static int +value_mask( BerVarray v, slap_mask_t cur, slap_mask_t *delta ) +{ + for ( ; !BER_BVISNULL( v ); v++ ) { + struct restricted_ops_t *rops; + int i; + + if ( OID_LEADCHAR( v->bv_val[ 0 ] ) ) { + rops = restricted_exops; + + } else { + rops = restricted_ops; + } + + for ( i = 0; !BER_BVISNULL( &rops[ i ].op ); i++ ) { + if ( ber_bvstrcasecmp( v, &rops[ i ].op ) != 0 ) { + continue; + } + + if ( rops[ i ].tag & *delta ) { + return LDAP_OTHER; + } + + if ( rops[ i ].tag & cur ) { + return LDAP_OTHER; + } + + cur |= rops[ i ].tag; + *delta |= rops[ i ].tag; + + break; + } + + if ( BER_BVISNULL( &rops[ i ].op ) ) { + return LDAP_INVALID_SYNTAX; + } + } + + return LDAP_SUCCESS; +} + int monitor_subsys_database_modify( Operation *op, @@ -308,11 +354,13 @@ monitor_subsys_database_modify( { struct monitorinfo *mi = (struct monitorinfo *)op->o_bd->be_private; int rc = LDAP_OTHER; - Attribute *save_attrs; + Attribute *save_attrs, *a; Modifications *modlist = op->oq_modify.rs_modlist; Modifications *ml; Backend *be; - int gotval = 1, i, n, cur; + int ro_gotval = 1, i, n; + slap_mask_t rp_add = 0, rp_delete = 0, rp_cur; + struct berval *tf; i = sscanf( e->e_nname.bv_val, "cn=database %d,", &n ); if ( i != 1 ) @@ -321,11 +369,12 @@ monitor_subsys_database_modify( if ( n < 0 || n >= nBackendDB ) return LDAP_NO_SUCH_OBJECT; + /* do not allow some changes on back-monitor (needs work)... */ be = &backendDB[n]; - if ( SLAP_MONITOR(be) ) + if ( SLAP_MONITOR( be ) ) return LDAP_UNWILLING_TO_PERFORM; - cur = (be->be_restrictops & SLAP_RESTRICT_OP_WRITES) ? 1 : 0; + rp_cur = be->be_restrictops; save_attrs = e->e_attrs; e->e_attrs = attrs_dup( e->e_attrs ); @@ -334,51 +383,122 @@ monitor_subsys_database_modify( Modification *mod = &ml->sml_mod; if ( mod->sm_desc == mi->mi_ad_readOnly ) { - int val = -1; + int val = -1; if ( mod->sm_values ) { - /* single-valued */ - if ( !BER_BVISNULL(&mod->sm_values[1]) ) { + if ( !BER_BVISNULL( &mod->sm_values[ 1 ] ) ) { rc = LDAP_CONSTRAINT_VIOLATION; - break; + goto done; } + if ( bvmatch( &slap_true_bv, mod->sm_values )) { val = 1; + } else if ( bvmatch( &slap_false_bv, mod->sm_values )) { val = 0; + + } else { + rc = LDAP_INVALID_SYNTAX; + goto done; } } - switch( mod->sm_op ) { + + switch ( mod->sm_op ) { case LDAP_MOD_DELETE: - if ( val < 0 || val == cur ) { - gotval--; - cur = -1; - } else { + if ( ro_gotval < 1 ) { + rc = LDAP_CONSTRAINT_VIOLATION; + goto done; + } + ro_gotval--; + + if ( val == 0 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) { + rc = LDAP_NO_SUCH_ATTRIBUTE; + goto done; + } + + if ( val == 1 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) != SLAP_RESTRICT_OP_WRITES ) { rc = LDAP_NO_SUCH_ATTRIBUTE; + goto done; } + break; + case LDAP_MOD_REPLACE: - gotval--; - cur = -1; - /* FALLTHRU */ + ro_gotval = 0; + /* fall thru */ + case LDAP_MOD_ADD: - if ( val < 0 ) { - rc = LDAP_INVALID_SYNTAX; - } else { - gotval++; - cur = val; + if ( ro_gotval > 0 ) { + rc = LDAP_CONSTRAINT_VIOLATION; + goto done; + } + ro_gotval++; + + if ( val == 1 ) { + rp_add |= (~rp_cur) & SLAP_RESTRICT_OP_WRITES; + rp_cur |= SLAP_RESTRICT_OP_WRITES; + rp_delete &= ~SLAP_RESTRICT_OP_WRITES; + + } else if ( val == 0 ) { + rp_delete |= rp_cur & SLAP_RESTRICT_OP_WRITES; + rp_cur &= ~SLAP_RESTRICT_OP_WRITES; + rp_add &= ~SLAP_RESTRICT_OP_WRITES; } break; + default: rc = LDAP_OTHER; - break; + goto done; } - if ( rc ) { + + } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) { + slap_mask_t mask = 0; + + switch ( mod->sm_op ) { + case LDAP_MOD_DELETE: + if ( mod->sm_values == NULL ) { + rp_delete = rp_cur; + rp_cur = 0; + rp_add = 0; + break; + } + rc = value_mask( mod->sm_values, ~rp_cur, &mask ); + if ( rc == LDAP_SUCCESS ) { + rp_delete |= mask; + rp_add &= ~mask; + rp_cur &= ~mask; + + } else if ( rc == LDAP_OTHER ) { + rc = LDAP_NO_SUCH_ATTRIBUTE; + } + break; + + case LDAP_MOD_REPLACE: + rp_delete = rp_cur; + rp_cur = 0; + rp_add = 0; + /* fall thru */ + + case LDAP_MOD_ADD: + rc = value_mask( mod->sm_values, rp_cur, &mask ); + if ( rc == LDAP_SUCCESS ) { + rp_add |= mask; + rp_cur |= mask; + rp_delete &= ~mask; + + } else if ( rc == LDAP_OTHER ) { + rc = LDAP_TYPE_OR_VALUE_EXISTS; + } + break; + + default: + rc = LDAP_OTHER; break; } - } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) { - /* TODO */ + if ( rc != LDAP_SUCCESS ) { + goto done; + } } else if ( is_at_operational( mod->sm_desc->ad_type )) { /* accept all operational attributes */ @@ -396,25 +516,128 @@ monitor_subsys_database_modify( } } - if ( gotval == 1 && cur >= 0 ) { - struct berval *tf; - tf = cur ? (struct berval *)&slap_true_bv : (struct berval *)&slap_false_bv; + /* sanity checks: */ + if ( ro_gotval < 1 ) { + rc = LDAP_CONSTRAINT_VIOLATION; + goto done; + } + + if ( ( rp_cur & SLAP_RESTRICT_OP_EXTENDED ) && ( rp_cur & SLAP_RESTRICT_EXOP_MASK ) ) { + rc = LDAP_CONSTRAINT_VIOLATION; + goto done; + } + + if ( rp_delete & rp_add ) { + rc = LDAP_OTHER; + goto done; + } + + /* check current value of readOnly */ + if ( ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) { + tf = (struct berval *)&slap_true_bv; + + } else { + tf = (struct berval *)&slap_false_bv; + } + + a = attr_find( e->e_attrs, mi->mi_ad_readOnly ); + if ( a == NULL ) { + rc = LDAP_OTHER; + goto done; + } + + if ( !bvmatch( &a->a_vals[0], tf ) ) { attr_delete( &e->e_attrs, mi->mi_ad_readOnly ); rc = attr_merge_one( e, mi->mi_ad_readOnly, tf, tf ); - if ( rc == LDAP_SUCCESS ) { - if ( cur ) { - be->be_restrictops |= SLAP_RESTRICT_OP_WRITES; + } + + if ( rc == LDAP_SUCCESS ) { + if ( rp_delete ) { + if ( rp_delete == be->be_restrictops ) { + attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation ); + } else { - be->be_restrictops &= ~SLAP_RESTRICT_OP_WRITES; + a = attr_find( e->e_attrs, mi->mi_ad_restrictedOperation ); + if ( a == NULL ) { + rc = LDAP_OTHER; + goto done; + } + + for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) { + if ( rp_delete & restricted_ops[ i ].tag ) { + int j; + + for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) { + int k; + + if ( !bvmatch( &a->a_nvals[ j ], &restricted_ops[ i ].op ) ) { + continue; + } + + ch_free( a->a_vals[ j ].bv_val ); + ch_free( a->a_nvals[ j ].bv_val ); + + for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) { + a->a_vals[ k - 1 ] = a->a_vals[ k ]; + a->a_nvals[ k - 1 ] = a->a_nvals[ k ]; + } + + BER_BVZERO( &a->a_vals[ k - 1 ] ); + BER_BVZERO( &a->a_nvals[ k - 1 ] ); + } + } + } + + for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) { + if ( rp_delete & restricted_exops[ i ].tag ) { + int j; + + for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) { + int k; + + if ( !bvmatch( &a->a_nvals[ j ], &restricted_exops[ i ].op ) ) { + continue; + } + + ch_free( a->a_vals[ j ].bv_val ); + ch_free( a->a_nvals[ j ].bv_val ); + + for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) { + a->a_vals[ k - 1 ] = a->a_vals[ k ]; + a->a_nvals[ k - 1 ] = a->a_nvals[ k ]; + } + + BER_BVZERO( &a->a_vals[ k - 1 ] ); + BER_BVZERO( &a->a_nvals[ k - 1 ] ); + } + } + } + } + } + + if ( rp_add ) { + for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) { + if ( rp_add & restricted_ops[ i ].tag ) { + attr_merge_one( e, mi->mi_ad_restrictedOperation, + &restricted_ops[ i ].op, &restricted_ops[ i ].op ); + } + } + + for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) { + if ( rp_add & restricted_exops[ i ].tag ) { + attr_merge_one( e, mi->mi_ad_restrictedOperation, + &restricted_exops[ i ].op, &restricted_exops[ i ].op ); + } } - } else { - rc = LDAP_OTHER; } - } else { - rc = LDAP_CONSTRAINT_VIOLATION; } + + be->be_restrictops = rp_cur; + +done:; if ( rc == LDAP_SUCCESS ) { attrs_free( save_attrs ); + } else { Attribute *tmp = e->e_attrs; e->e_attrs = save_attrs; -- 2.39.5