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153 lines
5.3 KiB
C
153 lines
5.3 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1999-2003 The OpenLDAP Foundation.
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* Portions Copyright 1999 Dmitry Kovalev.
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* Portions Copyright 2002 Pierangelo Mararati.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was initially developed by Dmitry Kovalev for inclusion
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* by OpenLDAP Software. Additional significant contributors include
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* Pierangelo Mararati
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*/
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/*
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* The following changes have been addressed:
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*
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* Enhancements:
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* - re-styled code for better readability
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* - upgraded backend API to reflect recent changes
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* - LDAP schema is checked when loading SQL/LDAP mapping
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* - AttributeDescription/ObjectClass pointers used for more efficient
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* mapping lookup
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* - bervals used where string length is required often
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* - atomized write operations by committing at the end of each operation
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* and defaulting connection closure to rollback
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* - added LDAP access control to write operations
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* - fully implemented modrdn (with rdn attrs change, deleteoldrdn,
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* access check, parent/children check and more)
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* - added parent access control, children control to delete operation
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* - added structuralObjectClass operational attribute check and
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* value return on search
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* - added hasSubordinate operational attribute on demand
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* - search limits are appropriately enforced
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* - function backsql_strcat() has been made more efficient
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* - concat function has been made configurable by means of a pattern
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* - added config switches:
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* - fail_if_no_mapping write operations fail if there is no mapping
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* - has_ldapinfo_dn_ru overrides autodetect
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* - concat_pattern a string containing two '?' is used
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* (note that "?||?" should be more portable
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* than builtin function "CONCAT(?,?)")
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* - strcast_func cast of string constants in "SELECT DISTINCT
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* statements (needed by PostgreSQL)
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* - upper_needs_cast cast the argument of upper when required
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* (basically when building dn substring queries)
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* - added noop control
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* - added values return filter control
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* - hasSubordinate can be used in search filters (with limitations)
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* - eliminated oc->name; use oc->oc->soc_cname instead
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*
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* Todo:
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* - add security checks for SQL statements that can be injected (?)
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* - re-test with previously supported RDBMs
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* - replace dn_ru and so with normalized dn (no need for upper() and so
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* in dn match)
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* - implement a backsql_normalize() function to replace the upper()
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* conversion routines
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* - note that subtree deletion, subtree renaming and so could be easily
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* implemented (rollback and consistency checks are available :)
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* - implement "lastmod" and other operational stuff (ldap_entries table ?)
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* - check how to allow multiple operations with one statement, to remove
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* BACKSQL_REALLOC_STMT from modify.c (a more recent unixODBC lib?)
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*/
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#ifndef __BACKSQL_H__
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#define __BACKSQL_H__
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#include "external.h"
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#include "sql-types.h"
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/*
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* Better use the standard length of 8192 (as of servers/slapd/dn.c) ?
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*/
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#define BACKSQL_MAX_DN_LEN 255
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/*
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* define to enable very extensive trace logging (debug only)
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*/
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#undef BACKSQL_TRACE
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typedef struct {
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char *dbhost;
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int dbport;
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char *dbuser;
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char *dbpasswd;
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char *dbname;
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/*
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* SQL condition for subtree searches differs in syntax:
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* "LIKE CONCAT('%',?)" or "LIKE '%'+?" or "LIKE '%'||?"
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* or smth else
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*/
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struct berval subtree_cond;
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struct berval children_cond;
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char *oc_query, *at_query;
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char *insentry_query,*delentry_query;
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char *id_query;
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char *has_children_query;
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MatchingRule *bi_caseIgnoreMatch;
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struct berval upper_func;
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struct berval upper_func_open;
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struct berval upper_func_close;
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BerVarray concat_func;
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unsigned int bsql_flags;
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#define BSQLF_SCHEMA_LOADED 0x0001
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#define BSQLF_UPPER_NEEDS_CAST 0x0002
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#define BSQLF_CREATE_NEEDS_SELECT 0x0004
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#define BSQLF_FAIL_IF_NO_MAPPING 0x0008
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#define BSQLF_HAS_LDAPINFO_DN_RU 0x0010
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#define BSQLF_DONTCHECK_LDAPINFO_DN_RU 0x0020
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#define BSQLF_USE_REVERSE_DN 0x0040
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#define BACKSQL_SCHEMA_LOADED(si) \
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((si)->bsql_flags & BSQLF_SCHEMA_LOADED)
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#define BACKSQL_UPPER_NEEDS_CAST(si) \
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((si)->bsql_flags & BSQLF_UPPER_NEEDS_CAST)
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#define BACKSQL_CREATE_NEEDS_SELECT(si) \
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((si)->bsql_flags & BSQLF_CREATE_NEEDS_SELECT)
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#define BACKSQL_FAIL_IF_NO_MAPPING(si) \
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((si)->bsql_flags & BSQLF_FAIL_IF_NO_MAPPING)
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#define BACKSQL_HAS_LDAPINFO_DN_RU(si) \
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((si)->bsql_flags & BSQLF_HAS_LDAPINFO_DN_RU)
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#define BACKSQL_DONTCHECK_LDAPINFO_DN_RU(si) \
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((si)->bsql_flags & BSQLF_DONTCHECK_LDAPINFO_DN_RU)
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#define BACKSQL_USE_REVERSE_DN(si) \
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((si)->bsql_flags & BSQLF_USE_REVERSE_DN)
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struct berval strcast_func;
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Avlnode *db_conns;
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Avlnode *oc_by_oc;
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Avlnode *oc_by_id;
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ldap_pvt_thread_mutex_t dbconn_mutex;
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ldap_pvt_thread_mutex_t schema_mutex;
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SQLHENV db_env;
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} backsql_info;
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#define BACKSQL_SUCCESS( rc ) \
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( (rc) == SQL_SUCCESS || (rc) == SQL_SUCCESS_WITH_INFO )
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#endif /* __BACKSQL_H__ */
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