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Diffstat (limited to 'servers/slapd/syntax.c')
| -rw-r--r-- | servers/slapd/syntax.c | 457 |
1 files changed, 457 insertions, 0 deletions
diff --git a/servers/slapd/syntax.c b/servers/slapd/syntax.c new file mode 100644 index 0000000..0400011 --- /dev/null +++ b/servers/slapd/syntax.c @@ -0,0 +1,457 @@ +/* syntax.c - routines to manage syntax definitions */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2022 The OpenLDAP Foundation. + * 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>. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/ctype.h> +#include <ac/string.h> +#include <ac/socket.h> + +#include "slap.h" + +struct sindexrec { + char *sir_name; + Syntax *sir_syn; +}; + +static Avlnode *syn_index = NULL; +static LDAP_STAILQ_HEAD(SyntaxList, Syntax) syn_list + = LDAP_STAILQ_HEAD_INITIALIZER(syn_list); + +/* Last hardcoded attribute registered */ +Syntax *syn_sys_tail; + +static int +syn_index_cmp( + const void *v_sir1, + const void *v_sir2 +) +{ + const struct sindexrec *sir1 = v_sir1, *sir2 = v_sir2; + return (strcmp( sir1->sir_name, sir2->sir_name )); +} + +static int +syn_index_name_cmp( + const void *name, + const void *sir +) +{ + return (strcmp( name, ((const struct sindexrec *)sir)->sir_name )); +} + +Syntax * +syn_find( const char *synname ) +{ + struct sindexrec *sir = NULL; + + if ( (sir = ldap_avl_find( syn_index, synname, syn_index_name_cmp )) != NULL ) { + return( sir->sir_syn ); + } + return( NULL ); +} + +Syntax * +syn_find_desc( const char *syndesc, int *len ) +{ + Syntax *synp; + + LDAP_STAILQ_FOREACH(synp, &syn_list, ssyn_next) { + if ((*len = dscompare( synp->ssyn_syn.syn_desc, syndesc, '{' /*'}'*/ ))) { + return synp; + } + } + return( NULL ); +} + +int +syn_is_sup( Syntax *syn, Syntax *sup ) +{ + int i; + + assert( syn != NULL ); + assert( sup != NULL ); + + if ( syn == sup ) { + return 1; + } + + if ( syn->ssyn_sups == NULL ) { + return 0; + } + + for ( i = 0; syn->ssyn_sups[i]; i++ ) { + if ( syn->ssyn_sups[i] == sup ) { + return 1; + } + + if ( syn_is_sup( syn->ssyn_sups[i], sup ) ) { + return 1; + } + } + + return 0; +} + +void +syn_destroy( void ) +{ + Syntax *s; + + ldap_avl_free( syn_index, ldap_memfree ); + while( !LDAP_STAILQ_EMPTY( &syn_list ) ) { + s = LDAP_STAILQ_FIRST( &syn_list ); + LDAP_STAILQ_REMOVE_HEAD( &syn_list, ssyn_next ); + if ( s->ssyn_sups ) { + SLAP_FREE( s->ssyn_sups ); + } + ldap_syntax_free( (LDAPSyntax *)s ); + } +} + +static int +syn_insert( + Syntax *ssyn, + Syntax *prev, + const char **err ) +{ + struct sindexrec *sir; + + LDAP_STAILQ_NEXT( ssyn, ssyn_next ) = NULL; + + if ( ssyn->ssyn_oid ) { + sir = (struct sindexrec *) + SLAP_CALLOC( 1, sizeof(struct sindexrec) ); + if( sir == NULL ) { + Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" ); + return LDAP_OTHER; + } + sir->sir_name = ssyn->ssyn_oid; + sir->sir_syn = ssyn; + if ( ldap_avl_insert( &syn_index, (caddr_t) sir, + syn_index_cmp, ldap_avl_dup_error ) ) { + *err = ssyn->ssyn_oid; + ldap_memfree(sir); + return SLAP_SCHERR_SYN_DUP; + } + /* FIX: temporal consistency check */ + syn_find(sir->sir_name); + } + + if ( ssyn->ssyn_flags & SLAP_AT_HARDCODE ) { + prev = syn_sys_tail; + syn_sys_tail = ssyn; + } + + if ( prev ) { + LDAP_STAILQ_INSERT_AFTER( &syn_list, prev, ssyn, ssyn_next ); + } else { + LDAP_STAILQ_INSERT_TAIL( &syn_list, ssyn, ssyn_next ); + } + return 0; +} + +int +syn_add( + LDAPSyntax *syn, + int user, + slap_syntax_defs_rec *def, + Syntax **ssynp, + Syntax *prev, + const char **err ) +{ + Syntax *ssyn; + int code = 0; + + if ( ssynp != NULL ) { + *ssynp = NULL; + } + + ssyn = (Syntax *) SLAP_CALLOC( 1, sizeof(Syntax) ); + if ( ssyn == NULL ) { + Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" ); + return SLAP_SCHERR_OUTOFMEM; + } + + AC_MEMCPY( &ssyn->ssyn_syn, syn, sizeof(LDAPSyntax) ); + + LDAP_STAILQ_NEXT(ssyn,ssyn_next) = NULL; + + /* + * note: ssyn_bvoid uses the same memory of ssyn_syn.syn_oid; + * ssyn_oidlen is #defined as ssyn_bvoid.bv_len + */ + ssyn->ssyn_bvoid.bv_val = ssyn->ssyn_syn.syn_oid; + ssyn->ssyn_oidlen = strlen(syn->syn_oid); + ssyn->ssyn_flags = def->sd_flags; + ssyn->ssyn_validate = def->sd_validate; + ssyn->ssyn_pretty = def->sd_pretty; + + ssyn->ssyn_sups = NULL; + +#ifdef SLAPD_BINARY_CONVERSION + ssyn->ssyn_ber2str = def->sd_ber2str; + ssyn->ssyn_str2ber = def->sd_str2ber; +#endif + + if ( def->sd_validate == NULL && def->sd_pretty == NULL && syn->syn_extensions != NULL ) { + LDAPSchemaExtensionItem **lsei; + Syntax *subst = NULL; + + for ( lsei = syn->syn_extensions; *lsei != NULL; lsei++) { + if ( strcmp( (*lsei)->lsei_name, "X-SUBST" ) != 0 ) { + continue; + } + + assert( (*lsei)->lsei_values != NULL ); + if ( (*lsei)->lsei_values[0] == NULL + || (*lsei)->lsei_values[1] != NULL ) + { + Debug( LDAP_DEBUG_ANY, "syn_add(%s): exactly one substitute syntax must be present\n", + ssyn->ssyn_syn.syn_oid ); + SLAP_FREE( ssyn ); + return SLAP_SCHERR_SYN_SUBST_NOT_SPECIFIED; + } + + subst = syn_find( (*lsei)->lsei_values[0] ); + if ( subst == NULL ) { + Debug( LDAP_DEBUG_ANY, "syn_add(%s): substitute syntax %s not found\n", + ssyn->ssyn_syn.syn_oid, (*lsei)->lsei_values[0] ); + SLAP_FREE( ssyn ); + return SLAP_SCHERR_SYN_SUBST_NOT_FOUND; + } + break; + } + + if ( subst != NULL ) { + ssyn->ssyn_flags = subst->ssyn_flags; + ssyn->ssyn_validate = subst->ssyn_validate; + ssyn->ssyn_pretty = subst->ssyn_pretty; + + ssyn->ssyn_sups = NULL; + +#ifdef SLAPD_BINARY_CONVERSION + ssyn->ssyn_ber2str = subst->ssyn_ber2str; + ssyn->ssyn_str2ber = subst->ssyn_str2ber; +#endif + } + } + + if ( def->sd_sups != NULL ) { + int cnt; + + for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ ) + ; + + ssyn->ssyn_sups = (Syntax **)SLAP_CALLOC( cnt + 1, + sizeof( Syntax * ) ); + if ( ssyn->ssyn_sups == NULL ) { + Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" ); + code = SLAP_SCHERR_OUTOFMEM; + + } else { + for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ ) { + ssyn->ssyn_sups[cnt] = syn_find( def->sd_sups[cnt] ); + if ( ssyn->ssyn_sups[cnt] == NULL ) { + *err = def->sd_sups[cnt]; + code = SLAP_SCHERR_SYN_SUP_NOT_FOUND; + } + } + } + } + + if ( !user ) + ssyn->ssyn_flags |= SLAP_SYNTAX_HARDCODE; + + if ( code == 0 ) { + code = syn_insert( ssyn, prev, err ); + } + + if ( code != 0 && ssyn != NULL ) { + if ( ssyn->ssyn_sups != NULL ) { + SLAP_FREE( ssyn->ssyn_sups ); + } + SLAP_FREE( ssyn ); + ssyn = NULL; + } + + if (ssynp ) { + *ssynp = ssyn; + } + + return code; +} + +int +register_syntax( + slap_syntax_defs_rec *def ) +{ + LDAPSyntax *syn; + int code; + const char *err; + + syn = ldap_str2syntax( def->sd_desc, &code, &err, LDAP_SCHEMA_ALLOW_ALL); + if ( !syn ) { + Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s before %s in %s\n", + ldap_scherr2str(code), err, def->sd_desc ); + + return( -1 ); + } + + code = syn_add( syn, 0, def, NULL, NULL, &err ); + + if ( code ) { + Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s %s in %s\n", + scherr2str(code), err, def->sd_desc ); + ldap_syntax_free( syn ); + + return( -1 ); + } + + ldap_memfree( syn ); + + return( 0 ); +} + +int +syn_schema_info( Entry *e ) +{ + AttributeDescription *ad_ldapSyntaxes = slap_schema.si_ad_ldapSyntaxes; + Syntax *syn; + struct berval val; + struct berval nval; + + LDAP_STAILQ_FOREACH(syn, &syn_list, ssyn_next ) { + if ( ! syn->ssyn_validate ) { + /* skip syntaxes without validators */ + continue; + } + if ( syn->ssyn_flags & SLAP_SYNTAX_HIDE ) { + /* hide syntaxes */ + continue; + } + + if ( ldap_syntax2bv( &syn->ssyn_syn, &val ) == NULL ) { + return -1; + } +#if 0 + Debug( LDAP_DEBUG_TRACE, "Merging syn [%ld] %s\n", + (long) val.bv_len, val.bv_val ); +#endif + + nval.bv_val = syn->ssyn_oid; + nval.bv_len = strlen(syn->ssyn_oid); + + if( attr_merge_one( e, ad_ldapSyntaxes, &val, &nval ) ) + { + return -1; + } + ldap_memfree( val.bv_val ); + } + return 0; +} + +void +syn_delete( Syntax *syn ) +{ + LDAP_STAILQ_REMOVE(&syn_list, syn, Syntax, ssyn_next); +} + +int +syn_start( Syntax **syn ) +{ + assert( syn != NULL ); + + *syn = LDAP_STAILQ_FIRST(&syn_list); + + return (*syn != NULL); +} + +int +syn_next( Syntax **syn ) +{ + assert( syn != NULL ); + +#if 0 /* pedantic check: don't use this */ + { + Syntax *tmp = NULL; + + LDAP_STAILQ_FOREACH(tmp,&syn_list,ssyn_next) { + if ( tmp == *syn ) { + break; + } + } + + assert( tmp != NULL ); + } +#endif + + *syn = LDAP_STAILQ_NEXT(*syn,ssyn_next); + + return (*syn != NULL); +} + +void +syn_unparse( BerVarray *res, Syntax *start, Syntax *end, int sys ) +{ + Syntax *syn; + int i, num; + struct berval bv, *bva = NULL, idx; + char ibuf[32]; + + if ( !start ) + start = LDAP_STAILQ_FIRST( &syn_list ); + + /* count the result size */ + i = 0; + for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) { + if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break; + i++; + if ( syn == end ) break; + } + if ( !i ) return; + + num = i; + bva = ch_malloc( (num+1) * sizeof(struct berval) ); + BER_BVZERO( bva ); + idx.bv_val = ibuf; + if ( sys ) { + idx.bv_len = 0; + ibuf[0] = '\0'; + } + i = 0; + for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) { + if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break; + if ( ldap_syntax2bv( &syn->ssyn_syn, &bv ) == NULL ) { + ber_bvarray_free( bva ); + } + if ( !sys ) { + idx.bv_len = sprintf(idx.bv_val, "{%d}", i); + } + bva[i].bv_len = idx.bv_len + bv.bv_len; + bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 ); + strcpy( bva[i].bv_val, ibuf ); + strcpy( bva[i].bv_val + idx.bv_len, bv.bv_val ); + i++; + bva[i].bv_val = NULL; + ldap_memfree( bv.bv_val ); + if ( syn == end ) break; + } + *res = bva; +} + |