-#ifndef __BACKSQL_H__
-#define __BACKSQL_H__
-
/*
* Copyright 1999, Dmitry Kovalev <mit@openldap.org>, All rights reserved.
*
* license is available at http://www.OpenLDAP.org/license.html or
* in file LICENSE in the top-level directory of the distribution.
*/
+/*
+ * Copyright 2002, Pierangelo Masarati <ando@OpenLDAP.org>.
+ * All rights reserved.
+ *
+ * This is a modified version of back-sql; the same conditions
+ * of the above reported Copyright statement, and sigificantly
+ * the OpenLDAP Public License apply. Credits go to Dmitry
+ * Kovalev for the initial development of the backend.
+ *
+ * This copyright statement cannot be altered.
+ */
+/*
+ * The following changes have been addressed:
+ *
+ * Enhancements:
+ * - re-styled code for better readability
+ * - upgraded backend API to reflect recent changes
+ * - LDAP schema is checked when loading SQL/LDAP mapping
+ * - AttributeDescription/ObjectClass pointers used for more efficient
+ * mapping lookup
+ * - bervals used where string length is required often
+ * - atomized write operations by committing at the end of each operation
+ * and defaulting connection closure to rollback
+ * - added LDAP access control to write operations
+ * - fully implemented modrdn (with rdn attrs change, deleteoldrdn,
+ * access check, parent/children check and more)
+ * - added parent access control, children control to delete operation
+ * - added structuralObjectClass operational attribute check and
+ * value return on search
+ * - added hasSubordinate operational attribute on demand
+ * - search limits are appropriately enforced
+ * - function backsql_strcat() has been made more efficient
+ * - concat function has been made configurable by means of a pattern
+ * - added config switches:
+ * - fail_if_no_mapping write operations fail if there is no mapping
+ * - has_ldapinfo_dn_ru overrides autodetect
+ * - concat_pattern a string containing two '?' is used
+ * (note that "?||?" should be more portable
+ * than builtin function "CONCAT(?,?)")
+ * - strcast_func cast of string constants in "SELECT DISTINCT
+ * statements (needed by PostgreSQL)
+ * - upper_needs_cast cast the argument of upper when required
+ * (basically when building dn substring queries)
+ * - added noop control
+ * - added values return filter control
+ * - hasSubordinate can be used in search filters (with limitations)
+ * - eliminated oc->name; use oc->oc->soc_cname instead
+ *
+ * Todo:
+ * - add security checks for SQL statements that can be injected (?)
+ * - re-test with previously supported RDBMs
+ * - replace dn_ru and so with normalized dn (no need for upper() and so
+ * in dn match)
+ * - implement a backsql_normalize() function to replace the upper()
+ * conversion routines
+ * - note that subtree deletion, subtree renaming and so could be easily
+ * implemented (rollback and consistency checks are available :)
+ * - implement "lastmod" and other operational stuff (ldap_entries table ?)
+ * - check how to allow multiple operations with one statement, to remove
+ * BACKSQL_REALLOC_STMT from modify.c (a more recent unixODBC lib?)
+ */
+#ifndef __BACKSQL_H__
+#define __BACKSQL_H__
#include "external.h"
#include "sql-types.h"
-#define BACKSQL_MAX_DN_LEN 255
-
-typedef struct
-{
- char *dbhost;
- int dbport;
- char *dbuser;
- char *dbpasswd;
- char *dbname;
- /*SQL condition for subtree searches differs in syntax:
- *"LIKE CONCAT('%',?)" or "LIKE '%'+?" or smth else */
- char *subtree_cond;
- char *oc_query,*at_query;
- char *insentry_query,*delentry_query;
- char *id_query;
- char *upper_func;
- Avlnode *db_conns;
- Avlnode *oc_by_name;
- Avlnode *oc_by_id;
- int schema_loaded;
- ldap_pvt_thread_mutex_t dbconn_mutex;
- ldap_pvt_thread_mutex_t schema_mutex;
- SQLHENV db_env;
- int isTimesTen; /* TimesTen */
- int has_ldapinfo_dn_ru; /* Does ldapinfo.dn_ru exist in schema? */
-}backsql_info;
-
-#endif
+
+/*
+ * Better use the standard length of 8192 (as of servers/slapd/dn.c) ?
+ */
+#define BACKSQL_MAX_DN_LEN 255
+
+/*
+ * define to enable very extensive trace logging (debug only)
+ */
+#undef BACKSQL_TRACE
+
+typedef struct {
+ char *dbhost;
+ int dbport;
+ char *dbuser;
+ char *dbpasswd;
+ char *dbname;
+ /*
+ * SQL condition for subtree searches differs in syntax:
+ * "LIKE CONCAT('%',?)" or "LIKE '%'+?" or "LIKE '%'||?"
+ * or smth else
+ */
+ struct berval subtree_cond;
+ struct berval children_cond;
+ char *oc_query, *at_query;
+ char *insentry_query,*delentry_query;
+ char *id_query;
+ char *has_children_query;
+
+ MatchingRule *bi_caseIgnoreMatch;
+
+ struct berval upper_func;
+ struct berval upper_func_open;
+ struct berval upper_func_close;
+ BerVarray concat_func;
+
+ unsigned int bsql_flags;
+#define BSQLF_SCHEMA_LOADED 0x0001
+#define BSQLF_UPPER_NEEDS_CAST 0x0002
+#define BSQLF_CREATE_NEEDS_SELECT 0x0004
+#define BSQLF_FAIL_IF_NO_MAPPING 0x0008
+#define BSQLF_HAS_LDAPINFO_DN_RU 0x0010
+#define BSQLF_DONTCHECK_LDAPINFO_DN_RU 0x0020
+#define BSQLF_USE_REVERSE_DN 0x0040
+
+#define BACKSQL_SCHEMA_LOADED(si) \
+ ((si)->bsql_flags & BSQLF_SCHEMA_LOADED)
+#define BACKSQL_UPPER_NEEDS_CAST(si) \
+ ((si)->bsql_flags & BSQLF_UPPER_NEEDS_CAST)
+#define BACKSQL_CREATE_NEEDS_SELECT(si) \
+ ((si)->bsql_flags & BSQLF_CREATE_NEEDS_SELECT)
+#define BACKSQL_FAIL_IF_NO_MAPPING(si) \
+ ((si)->bsql_flags & BSQLF_FAIL_IF_NO_MAPPING)
+#define BACKSQL_HAS_LDAPINFO_DN_RU(si) \
+ ((si)->bsql_flags & BSQLF_HAS_LDAPINFO_DN_RU)
+#define BACKSQL_DONTCHECK_LDAPINFO_DN_RU(si) \
+ ((si)->bsql_flags & BSQLF_DONTCHECK_LDAPINFO_DN_RU)
+#define BACKSQL_USE_REVERSE_DN(si) \
+ ((si)->bsql_flags & BSQLF_USE_REVERSE_DN)
+
+ struct berval strcast_func;
+ Avlnode *db_conns;
+ Avlnode *oc_by_oc;
+ Avlnode *oc_by_id;
+ ldap_pvt_thread_mutex_t dbconn_mutex;
+ ldap_pvt_thread_mutex_t schema_mutex;
+ SQLHENV db_env;
+} backsql_info;
+
+#define BACKSQL_SUCCESS( rc ) \
+ ( (rc) == SQL_SUCCESS || (rc) == SQL_SUCCESS_WITH_INFO )
+
+#endif /* __BACKSQL_H__ */
projects / openldap / blobdiff