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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 11:11:40 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 11:11:40 +0000
commit7731832751ab9f3c6ddeb66f186d3d7fa1934a6d (patch)
treee91015872543a59be2aad26c2fea02e41b57005d /servers/slapd/back-sql/sql-wrap.c
parentInitial commit. (diff)
downloadopenldap-7731832751ab9f3c6ddeb66f186d3d7fa1934a6d.tar.xz
openldap-7731832751ab9f3c6ddeb66f186d3d7fa1934a6d.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 'servers/slapd/back-sql/sql-wrap.c')
-rw-r--r--servers/slapd/back-sql/sql-wrap.c538
1 files changed, 538 insertions, 0 deletions
diff --git a/servers/slapd/back-sql/sql-wrap.c b/servers/slapd/back-sql/sql-wrap.c
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+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2021 The OpenLDAP Foundation.
+ * Portions Copyright 1999 Dmitry Kovalev.
+ * Portions Copyright 2002 Pierangelo Masarati.
+ * Portions Copyright 2004 Mark Adamson.
+ * 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 Dmitry Kovalev for inclusion
+ * by OpenLDAP Software. Additional significant contributors include
+ * Pierangelo Masarati and Mark Adamson.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include "ac/string.h"
+#include <sys/types.h>
+
+#include "slap.h"
+#include "proto-sql.h"
+
+#define MAX_ATTR_LEN 16384
+
+void
+backsql_PrintErrors( SQLHENV henv, SQLHDBC hdbc, SQLHSTMT sth, int rc )
+{
+ SQLCHAR msg[SQL_MAX_MESSAGE_LENGTH]; /* msg. buffer */
+ SQLCHAR state[SQL_SQLSTATE_SIZE]; /* statement buf. */
+ SDWORD iSqlCode; /* return code */
+ SWORD len = SQL_MAX_MESSAGE_LENGTH - 1; /* return length */
+
+ Debug( LDAP_DEBUG_TRACE, "Return code: %d\n", rc, 0, 0 );
+
+ for ( ; rc = SQLError( henv, hdbc, sth, state, &iSqlCode, msg,
+ SQL_MAX_MESSAGE_LENGTH - 1, &len ), BACKSQL_SUCCESS( rc ); )
+ {
+ Debug( LDAP_DEBUG_TRACE,
+ " nativeErrCode=%d SQLengineState=%s msg=\"%s\"\n",
+ (int)iSqlCode, state, msg );
+ }
+}
+
+RETCODE
+backsql_Prepare( SQLHDBC dbh, SQLHSTMT *sth, const char *query, int timeout )
+{
+ RETCODE rc;
+
+ rc = SQLAllocStmt( dbh, sth );
+ if ( rc != SQL_SUCCESS ) {
+ return rc;
+ }
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_Prepare()\n", 0, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+#ifdef BACKSQL_MSSQL_WORKAROUND
+ {
+ char drv_name[ 30 ];
+ SWORD len;
+
+ SQLGetInfo( dbh, SQL_DRIVER_NAME, drv_name, sizeof( drv_name ), &len );
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_Prepare(): driver name=\"%s\"\n",
+ drv_name, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ ldap_pvt_str2upper( drv_name );
+ if ( !strncmp( drv_name, "SQLSRV32.DLL", STRLENOF( "SQLSRV32.DLL" ) ) ) {
+ /*
+ * stupid default result set in MS SQL Server
+ * does not support multiple active statements
+ * on the same connection -- so we are trying
+ * to make it not to use default result set...
+ */
+ Debug( LDAP_DEBUG_TRACE, "_SQLprepare(): "
+ "enabling MS SQL Server default result "
+ "set workaround\n", 0, 0, 0 );
+ rc = SQLSetStmtOption( *sth, SQL_CONCURRENCY,
+ SQL_CONCUR_ROWVER );
+ if ( rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO ) {
+ Debug( LDAP_DEBUG_TRACE, "backsql_Prepare(): "
+ "SQLSetStmtOption(SQL_CONCURRENCY,"
+ "SQL_CONCUR_ROWVER) failed:\n",
+ 0, 0, 0 );
+ backsql_PrintErrors( SQL_NULL_HENV, dbh, *sth, rc );
+ SQLFreeStmt( *sth, SQL_DROP );
+ return rc;
+ }
+ }
+ }
+#endif /* BACKSQL_MSSQL_WORKAROUND */
+
+ if ( timeout > 0 ) {
+ Debug( LDAP_DEBUG_TRACE, "_SQLprepare(): "
+ "setting query timeout to %d sec.\n",
+ timeout, 0, 0 );
+ rc = SQLSetStmtOption( *sth, SQL_QUERY_TIMEOUT, timeout );
+ if ( rc != SQL_SUCCESS ) {
+ backsql_PrintErrors( SQL_NULL_HENV, dbh, *sth, rc );
+ SQLFreeStmt( *sth, SQL_DROP );
+ return rc;
+ }
+ }
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_Prepare() calling SQLPrepare()\n",
+ 0, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ return SQLPrepare( *sth, (SQLCHAR *)query, SQL_NTS );
+}
+
+RETCODE
+backsql_BindRowAsStrings_x( SQLHSTMT sth, BACKSQL_ROW_NTS *row, void *ctx )
+{
+ RETCODE rc;
+
+ if ( row == NULL ) {
+ return SQL_ERROR;
+ }
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "==> backsql_BindRowAsStrings()\n", 0, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ rc = SQLNumResultCols( sth, &row->ncols );
+ if ( rc != SQL_SUCCESS ) {
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_BindRowAsStrings(): "
+ "SQLNumResultCols() failed:\n", 0, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ backsql_PrintErrors( SQL_NULL_HENV, SQL_NULL_HDBC, sth, rc );
+
+ } else {
+ SQLCHAR colname[ 64 ];
+ SQLSMALLINT name_len, col_type, col_scale, col_null;
+ SQLLEN col_prec;
+ int i;
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_BindRowAsStrings: "
+ "ncols=%d\n", (int)row->ncols, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ row->col_names = (BerVarray)ber_memcalloc_x( row->ncols + 1,
+ sizeof( struct berval ), ctx );
+ if ( row->col_names == NULL ) {
+ goto nomem;
+ }
+
+ row->col_prec = (UDWORD *)ber_memcalloc_x( row->ncols,
+ sizeof( UDWORD ), ctx );
+ if ( row->col_prec == NULL ) {
+ goto nomem;
+ }
+
+ row->col_type = (SQLSMALLINT *)ber_memcalloc_x( row->ncols,
+ sizeof( SQLSMALLINT ), ctx );
+ if ( row->col_type == NULL ) {
+ goto nomem;
+ }
+
+ row->cols = (char **)ber_memcalloc_x( row->ncols + 1,
+ sizeof( char * ), ctx );
+ if ( row->cols == NULL ) {
+ goto nomem;
+ }
+
+ row->value_len = (SQLLEN *)ber_memcalloc_x( row->ncols,
+ sizeof( SQLLEN ), ctx );
+ if ( row->value_len == NULL ) {
+ goto nomem;
+ }
+
+ if ( 0 ) {
+nomem:
+ ber_memfree_x( row->col_names, ctx );
+ row->col_names = NULL;
+ ber_memfree_x( row->col_prec, ctx );
+ row->col_prec = NULL;
+ ber_memfree_x( row->col_type, ctx );
+ row->col_type = NULL;
+ ber_memfree_x( row->cols, ctx );
+ row->cols = NULL;
+ ber_memfree_x( row->value_len, ctx );
+ row->value_len = NULL;
+
+ Debug( LDAP_DEBUG_ANY, "backsql_BindRowAsStrings: "
+ "out of memory\n", 0, 0, 0 );
+
+ return LDAP_NO_MEMORY;
+ }
+
+ for ( i = 0; i < row->ncols; i++ ) {
+ SQLSMALLINT TargetType;
+
+ rc = SQLDescribeCol( sth, (SQLSMALLINT)(i + 1), &colname[ 0 ],
+ (SQLUINTEGER)( sizeof( colname ) - 1 ),
+ &name_len, &col_type,
+ &col_prec, &col_scale, &col_null );
+ /* FIXME: test rc? */
+
+ ber_str2bv_x( (char *)colname, 0, 1,
+ &row->col_names[ i ], ctx );
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_BindRowAsStrings: "
+ "col_name=%s, col_prec[%d]=%d\n",
+ colname, (int)(i + 1), (int)col_prec );
+#endif /* BACKSQL_TRACE */
+ if ( col_type != SQL_CHAR && col_type != SQL_VARCHAR )
+ {
+ col_prec = MAX_ATTR_LEN;
+ }
+
+ row->cols[ i ] = (char *)ber_memcalloc_x( col_prec + 1,
+ sizeof( char ), ctx );
+ row->col_prec[ i ] = col_prec;
+ row->col_type[ i ] = col_type;
+
+ /*
+ * ITS#3386, ITS#3113 - 20070308
+ * Note: there are many differences between various DPMS and ODBC
+ * Systems; some support SQL_C_BLOB, SQL_C_BLOB_LOCATOR. YMMV:
+ * This has only been tested on Linux/MySQL/UnixODBC
+ * For BINARY-type Fields (BLOB, etc), read the data as BINARY
+ */
+ if ( BACKSQL_IS_BINARY( col_type ) ) {
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_BindRowAsStrings: "
+ "col_name=%s, col_type[%d]=%d: reading binary data\n",
+ colname, (int)(i + 1), (int)col_type);
+#endif /* BACKSQL_TRACE */
+ TargetType = SQL_C_BINARY;
+
+ } else {
+ /* Otherwise read it as Character data */
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "backsql_BindRowAsStrings: "
+ "col_name=%s, col_type[%d]=%d: reading character data\n",
+ colname, (int)(i + 1), (int)col_type);
+#endif /* BACKSQL_TRACE */
+ TargetType = SQL_C_CHAR;
+ }
+
+ rc = SQLBindCol( sth, (SQLUSMALLINT)(i + 1),
+ TargetType,
+ (SQLPOINTER)row->cols[ i ],
+ col_prec + 1,
+ &row->value_len[ i ] );
+
+ /* FIXME: test rc? */
+ }
+
+ BER_BVZERO( &row->col_names[ i ] );
+ row->cols[ i ] = NULL;
+ }
+
+#ifdef BACKSQL_TRACE
+ Debug( LDAP_DEBUG_TRACE, "<== backsql_BindRowAsStrings()\n", 0, 0, 0 );
+#endif /* BACKSQL_TRACE */
+
+ return rc;
+}
+
+RETCODE
+backsql_BindRowAsStrings( SQLHSTMT sth, BACKSQL_ROW_NTS *row )
+{
+ return backsql_BindRowAsStrings_x( sth, row, NULL );
+}
+
+RETCODE
+backsql_FreeRow_x( BACKSQL_ROW_NTS *row, void *ctx )
+{
+ if ( row->cols == NULL ) {
+ return SQL_ERROR;
+ }
+
+ ber_bvarray_free_x( row->col_names, ctx );
+ ber_memfree_x( row->col_prec, ctx );
+ ber_memfree_x( row->col_type, ctx );
+ ber_memvfree_x( (void **)row->cols, ctx );
+ ber_memfree_x( row->value_len, ctx );
+
+ return SQL_SUCCESS;
+}
+
+
+RETCODE
+backsql_FreeRow( BACKSQL_ROW_NTS *row )
+{
+ return backsql_FreeRow_x( row, NULL );
+}
+
+static void
+backsql_close_db_handle( SQLHDBC dbh )
+{
+ if ( dbh == SQL_NULL_HDBC ) {
+ return;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_close_db_handle(%p)\n",
+ (void *)dbh, 0, 0 );
+
+ /*
+ * Default transact is SQL_ROLLBACK; commit is required only
+ * by write operations, and it is explicitly performed after
+ * each atomic operation succeeds.
+ */
+
+ /* TimesTen */
+ SQLTransact( SQL_NULL_HENV, dbh, SQL_ROLLBACK );
+ SQLDisconnect( dbh );
+ SQLFreeConnect( dbh );
+
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_close_db_handle(%p)\n",
+ (void *)dbh, 0, 0 );
+}
+
+int
+backsql_conn_destroy(
+ backsql_info *bi )
+{
+ return 0;
+}
+
+int
+backsql_init_db_env( backsql_info *bi )
+{
+ RETCODE rc;
+ int ret = SQL_SUCCESS;
+
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_init_db_env()\n", 0, 0, 0 );
+
+ rc = SQLAllocEnv( &bi->sql_db_env );
+ if ( rc != SQL_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE, "init_db_env: SQLAllocEnv failed:\n",
+ 0, 0, 0 );
+ backsql_PrintErrors( SQL_NULL_HENV, SQL_NULL_HDBC,
+ SQL_NULL_HENV, rc );
+ ret = SQL_ERROR;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_init_db_env()=%d\n", ret, 0, 0 );
+
+ return ret;
+}
+
+int
+backsql_free_db_env( backsql_info *bi )
+{
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_free_db_env()\n", 0, 0, 0 );
+
+ (void)SQLFreeEnv( bi->sql_db_env );
+ bi->sql_db_env = SQL_NULL_HENV;
+
+ /*
+ * stop, if frontend waits for all threads to shutdown
+ * before calling this -- then what are we going to delete??
+ * everything is already deleted...
+ */
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_free_db_env()\n", 0, 0, 0 );
+
+ return SQL_SUCCESS;
+}
+
+static int
+backsql_open_db_handle(
+ backsql_info *bi,
+ SQLHDBC *dbhp )
+{
+ /* TimesTen */
+ char DBMSName[ 32 ];
+ int rc;
+
+ assert( dbhp != NULL );
+ *dbhp = SQL_NULL_HDBC;
+
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_open_db_handle()\n",
+ 0, 0, 0 );
+
+ rc = SQLAllocConnect( bi->sql_db_env, dbhp );
+ if ( !BACKSQL_SUCCESS( rc ) ) {
+ Debug( LDAP_DEBUG_TRACE, "backsql_open_db_handle(): "
+ "SQLAllocConnect() failed:\n",
+ 0, 0, 0 );
+ backsql_PrintErrors( bi->sql_db_env, SQL_NULL_HDBC,
+ SQL_NULL_HENV, rc );
+ return LDAP_UNAVAILABLE;
+ }
+
+ rc = SQLConnect( *dbhp,
+ (SQLCHAR*)bi->sql_dbname, SQL_NTS,
+ (SQLCHAR*)bi->sql_dbuser, SQL_NTS,
+ (SQLCHAR*)bi->sql_dbpasswd, SQL_NTS );
+ if ( rc != SQL_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE, "backsql_open_db_handle(): "
+ "SQLConnect() to database \"%s\" %s.\n",
+ bi->sql_dbname,
+ rc == SQL_SUCCESS_WITH_INFO ?
+ "succeeded with info" : "failed",
+ 0 );
+ backsql_PrintErrors( bi->sql_db_env, *dbhp, SQL_NULL_HENV, rc );
+ if ( rc != SQL_SUCCESS_WITH_INFO ) {
+ SQLFreeConnect( *dbhp );
+ return LDAP_UNAVAILABLE;
+ }
+ }
+
+ /*
+ * TimesTen : Turn off autocommit. We must explicitly
+ * commit any transactions.
+ */
+ SQLSetConnectOption( *dbhp, SQL_AUTOCOMMIT,
+ BACKSQL_AUTOCOMMIT_ON( bi ) ? SQL_AUTOCOMMIT_ON : SQL_AUTOCOMMIT_OFF );
+
+ /*
+ * See if this connection is to TimesTen. If it is,
+ * remember that fact for later use.
+ */
+ /* Assume until proven otherwise */
+ bi->sql_flags &= ~BSQLF_USE_REVERSE_DN;
+ DBMSName[ 0 ] = '\0';
+ rc = SQLGetInfo( *dbhp, SQL_DBMS_NAME, (PTR)&DBMSName,
+ sizeof( DBMSName ), NULL );
+ if ( rc == SQL_SUCCESS ) {
+ if ( strcmp( DBMSName, "TimesTen" ) == 0 ||
+ strcmp( DBMSName, "Front-Tier" ) == 0 )
+ {
+ Debug( LDAP_DEBUG_TRACE, "backsql_open_db_handle(): "
+ "TimesTen database!\n",
+ 0, 0, 0 );
+ bi->sql_flags |= BSQLF_USE_REVERSE_DN;
+ }
+
+ } else {
+ Debug( LDAP_DEBUG_TRACE, "backsql_open_db_handle(): "
+ "SQLGetInfo() failed.\n",
+ 0, 0, 0 );
+ backsql_PrintErrors( bi->sql_db_env, *dbhp, SQL_NULL_HENV, rc );
+ SQLDisconnect( *dbhp );
+ SQLFreeConnect( *dbhp );
+ return LDAP_UNAVAILABLE;
+ }
+ /* end TimesTen */
+
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_open_db_handle()\n",
+ 0, 0, 0 );
+
+ return LDAP_SUCCESS;
+}
+
+static void *backsql_db_conn_dummy;
+
+static void
+backsql_db_conn_keyfree(
+ void *key,
+ void *data )
+{
+ (void)backsql_close_db_handle( (SQLHDBC)data );
+}
+
+int
+backsql_free_db_conn( Operation *op, SQLHDBC dbh )
+{
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_free_db_conn()\n", 0, 0, 0 );
+
+ (void)backsql_close_db_handle( dbh );
+ ldap_pvt_thread_pool_setkey( op->o_threadctx,
+ &backsql_db_conn_dummy, (void *)SQL_NULL_HDBC,
+ backsql_db_conn_keyfree, NULL, NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_free_db_conn()\n", 0, 0, 0 );
+
+ return LDAP_SUCCESS;
+}
+
+int
+backsql_get_db_conn( Operation *op, SQLHDBC *dbhp )
+{
+ backsql_info *bi = (backsql_info *)op->o_bd->be_private;
+ int rc = LDAP_SUCCESS;
+ SQLHDBC dbh = SQL_NULL_HDBC;
+
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_get_db_conn()\n", 0, 0, 0 );
+
+ assert( dbhp != NULL );
+ *dbhp = SQL_NULL_HDBC;
+
+ if ( op->o_threadctx ) {
+ void *data = NULL;
+
+ ldap_pvt_thread_pool_getkey( op->o_threadctx,
+ &backsql_db_conn_dummy, &data, NULL );
+ dbh = (SQLHDBC)data;
+
+ } else {
+ dbh = bi->sql_dbh;
+ }
+
+ if ( dbh == SQL_NULL_HDBC ) {
+ rc = backsql_open_db_handle( bi, &dbh );
+ if ( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ if ( op->o_threadctx ) {
+ void *data = (void *)dbh;
+
+ ldap_pvt_thread_pool_setkey( op->o_threadctx,
+ &backsql_db_conn_dummy, data,
+ backsql_db_conn_keyfree, NULL, NULL );
+
+ } else {
+ bi->sql_dbh = dbh;
+ }
+ }
+
+ *dbhp = dbh;
+
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_get_db_conn()\n", 0, 0, 0 );
+
+ return LDAP_SUCCESS;
+}
+