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667 lines
18 KiB
C
667 lines
18 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2006 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Ard Biesheuvel <abies@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define _GNU_SOURCE
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#include "php.h"
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#include "php_ini.h"
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#include "ext/standard/info.h"
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#include "pdo/php_pdo.h"
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#include "pdo/php_pdo_driver.h"
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#include "php_pdo_firebird.h"
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#include "php_pdo_firebird_int.h"
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static int firebird_alloc_prepare_stmt(pdo_dbh_t*, const char*, long, XSQLDA*, isc_stmt_handle*,
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HashTable* TSRMLS_DC);
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/* map driver specific error message to PDO error */
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void _firebird_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, char const *file, long line TSRMLS_DC) /* {{{ */
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{
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#if 0
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pdo_firebird_db_handle *H = stmt ? ((pdo_firebird_stmt *)stmt->driver_data)->H
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: (pdo_firebird_db_handle *)dbh->driver_data;
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#endif
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pdo_error_type *const error_code = stmt ? &stmt->error_code : &dbh->error_code;
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#if 0
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switch (isc_sqlcode(H->isc_status)) {
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case 0:
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*error_code = PDO_ERR_NONE;
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break;
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default:
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*error_code = PDO_ERR_CANT_MAP;
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break;
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case -104:
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*error_code = PDO_ERR_SYNTAX;
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break;
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case -530:
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case -803:
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*error_code = PDO_ERR_CONSTRAINT;
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break;
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case -204:
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case -205:
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case -206:
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case -829:
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*error_code = PDO_ERR_NOT_FOUND;
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break;
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*error_code = PDO_ERR_ALREADY_EXISTS;
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break;
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*error_code = PDO_ERR_NOT_IMPLEMENTED;
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break;
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case -313:
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case -804:
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*error_code = PDO_ERR_MISMATCH;
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break;
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case -303:
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case -314:
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case -413:
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*error_code = PDO_ERR_TRUNCATED;
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break;
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*error_code = PDO_ERR_DISCONNECTED;
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break;
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}
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#else
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strcpy(*error_code, "HY000");
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#endif
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}
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/* }}} */
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#define RECORD_ERROR(dbh) _firebird_error(dbh, NULL, __FILE__, __LINE__ TSRMLS_CC)
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/* called by PDO to close a db handle */
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static int firebird_handle_closer(pdo_dbh_t *dbh TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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if (dbh->in_txn) {
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if (dbh->auto_commit) {
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if (isc_commit_transaction(H->isc_status, &H->tr)) {
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RECORD_ERROR(dbh);
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}
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} else {
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if (isc_rollback_transaction(H->isc_status, &H->tr)) {
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RECORD_ERROR(dbh);
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}
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}
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}
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if (isc_detach_database(H->isc_status, &H->db)) {
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RECORD_ERROR(dbh);
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}
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pefree(H, dbh->is_persistent);
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return 0;
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}
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/* }}} */
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/* called by PDO to prepare an SQL query */
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static int firebird_handle_preparer(pdo_dbh_t *dbh, const char *sql, long sql_len, /* {{{ */
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pdo_stmt_t *stmt, zval *driver_options TSRMLS_DC)
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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pdo_firebird_stmt *S = NULL;
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HashTable *np;
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do {
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isc_stmt_handle s = NULL;
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XSQLDA num_sqlda;
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static char const info[] = { isc_info_sql_stmt_type };
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char result[8];
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num_sqlda.version = PDO_FB_SQLDA_VERSION;
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num_sqlda.sqln = 1;
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ALLOC_HASHTABLE(np);
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zend_hash_init(np, 8, NULL, NULL, 0);
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/* allocate and prepare statement */
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if (!firebird_alloc_prepare_stmt(dbh, sql, sql_len, &num_sqlda, &s, np TSRMLS_CC)) {
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break;
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}
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/* allocate a statement handle struct of the right size (struct out_sqlda is inlined) */
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S = ecalloc(1, sizeof(*S)-sizeof(XSQLDA) + XSQLDA_LENGTH(num_sqlda.sqld));
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S->H = H;
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S->stmt = s;
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S->fetch_buf = ecalloc(1,sizeof(char*) * num_sqlda.sqld);
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S->out_sqlda.version = PDO_FB_SQLDA_VERSION;
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S->out_sqlda.sqln = stmt->column_count = num_sqlda.sqld;
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S->named_params = np;
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/* determine the statement type */
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if (isc_dsql_sql_info(H->isc_status, &s, sizeof(info), const_cast(info), sizeof(result),
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result)) {
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break;
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}
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S->statement_type = result[3];
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/* fill the output sqlda with information about the prepared query */
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if (isc_dsql_describe(H->isc_status, &s, PDO_FB_SQLDA_VERSION, &S->out_sqlda)) {
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RECORD_ERROR(dbh);
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break;
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}
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/* allocate the input descriptors */
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if (isc_dsql_describe_bind(H->isc_status, &s, PDO_FB_SQLDA_VERSION, &num_sqlda)) {
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break;
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}
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if (num_sqlda.sqld) {
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S->in_sqlda = ecalloc(1,XSQLDA_LENGTH(num_sqlda.sqld));
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S->in_sqlda->version = PDO_FB_SQLDA_VERSION;
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S->in_sqlda->sqln = num_sqlda.sqld;
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if (isc_dsql_describe_bind(H->isc_status, &s, PDO_FB_SQLDA_VERSION, S->in_sqlda)) {
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break;
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}
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}
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stmt->driver_data = S;
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stmt->methods = &firebird_stmt_methods;
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stmt->supports_placeholders = PDO_PLACEHOLDER_POSITIONAL;
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return 1;
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} while (0);
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RECORD_ERROR(dbh);
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zend_hash_destroy(np);
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FREE_HASHTABLE(np);
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if (S) {
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if (S->in_sqlda) {
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efree(S->in_sqlda);
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}
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efree(S);
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}
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return 0;
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}
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/* }}} */
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/* called by PDO to execute a statement that doesn't produce a result set */
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static long firebird_handle_doer(pdo_dbh_t *dbh, const char *sql, long sql_len TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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isc_stmt_handle stmt = NULL;
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static char const info_count[] = { isc_info_sql_records };
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char result[64];
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int ret = 0;
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XSQLDA in_sqlda, out_sqlda;
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/* TODO no placeholders in exec() for now */
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in_sqlda.version = out_sqlda.version = PDO_FB_SQLDA_VERSION;
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in_sqlda.sqld = out_sqlda.sqld = 0;
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/* allocate and prepare statement */
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if (!firebird_alloc_prepare_stmt(dbh, sql, sql_len, &out_sqlda, &stmt, 0 TSRMLS_CC)) {
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return -1;
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}
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/* execute the statement */
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if (isc_dsql_execute2(H->isc_status, &H->tr, &stmt, PDO_FB_SQLDA_VERSION, &in_sqlda, &out_sqlda)) {
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RECORD_ERROR(dbh);
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return -1;
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}
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/* find out how many rows were affected */
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if (isc_dsql_sql_info(H->isc_status, &stmt, sizeof(info_count), const_cast(info_count),
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sizeof(result), result)) {
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RECORD_ERROR(dbh);
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return -1;
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}
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if (result[0] == isc_info_sql_records) {
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unsigned i = 3, result_size = isc_vax_integer(&result[1],2);
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while (result[i] != isc_info_end && i < result_size) {
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short len = (short)isc_vax_integer(&result[i+1],2);
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if (result[i] != isc_info_req_select_count) {
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ret += isc_vax_integer(&result[i+3],len);
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}
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i += len+3;
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}
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}
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/* commit if we're in auto_commit mode */
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if (dbh->auto_commit && isc_commit_retaining(H->isc_status, &H->tr)) {
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RECORD_ERROR(dbh);
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}
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return ret;
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}
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/* }}} */
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/* called by the PDO SQL parser to add quotes to values that are copied into SQL */
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static int firebird_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquotedlen, /* {{{ */
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char **quoted, int *quotedlen, enum pdo_param_type paramtype TSRMLS_DC)
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{
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int qcount = 0;
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char const *c;
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/* Firebird only requires single quotes to be doubled if string lengths are used */
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/* count the number of ' characters */
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for (c = unquoted; (c = strchr(c,'\'')); qcount++, c++);
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if (!qcount) {
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return 0;
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} else {
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char const *l, *r;
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char *c;
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*quotedlen = unquotedlen + qcount;
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*quoted = c = emalloc(*quotedlen+1);
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/* foreach (chunk that ends in a quote) */
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for (l = unquoted; (r = strchr(l,'\'')); l = r+1) {
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/* copy the chunk */
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strncpy(c, l, r-l);
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c += (r-l);
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/* add the second quote */
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*c++ = '\'';
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}
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/* copy the remainder */
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strncpy(c, l, *quotedlen-(c-*quoted));
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return 1;
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}
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}
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/* }}} */
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/* called by PDO to start a transaction */
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static int firebird_handle_begin(pdo_dbh_t *dbh TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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char tpb[8] = { isc_tpb_version3 }, *ptpb = tpb+1;
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#if abies_0
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if (dbh->transaction_flags & PDO_TRANS_ISOLATION_LEVEL) {
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if (dbh->transaction_flags & PDO_TRANS_READ_UNCOMMITTED) {
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/* this is a poor fit, but it's all we have */
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*ptpb++ = isc_tpb_read_committed;
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*ptpb++ = isc_tpb_rec_version;
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dbh->transaction_flags &= ~(PDO_TRANS_ISOLATION_LEVEL^PDO_TRANS_READ_UNCOMMITTED);
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} else if (dbh->transaction_flags & PDO_TRANS_READ_COMMITTED) {
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*ptpb++ = isc_tpb_read_committed;
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*ptpb++ = isc_tpb_no_rec_version;
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dbh->transaction_flags &= ~(PDO_TRANS_ISOLATION_LEVEL^PDO_TRANS_READ_COMMITTED);
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} else if (dbh->transaction_flags & PDO_TRANS_REPEATABLE_READ) {
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*ptpb++ = isc_tpb_concurrency;
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dbh->transaction_flags &= ~(PDO_TRANS_ISOLATION_LEVEL^PDO_TRANS_REPEATABLE_READ);
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} else {
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*ptpb++ = isc_tpb_consistency;
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dbh->transaction_flags &= ~(PDO_TRANS_ISOLATION_LEVEL^PDO_TRANS_SERIALIZABLE);
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}
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}
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if (dbh->transaction_flags & PDO_TRANS_ACCESS_MODE) {
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if (dbh->transaction_flags & PDO_TRANS_READONLY) {
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*ptpb++ = isc_tpb_read;
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dbh->transaction_flags &= ~(PDO_TRANS_ACCESS_MODE^PDO_TRANS_READONLY);
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} else {
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*ptpb++ = isc_tpb_write;
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dbh->transaction_flags &= ~(PDO_TRANS_ACCESS_MODE^PDO_TRANS_READWRITE);
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}
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}
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if (dbh->transaction_flags & PDO_TRANS_CONFLICT_RESOLUTION) {
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if (dbh->transaction_flags & PDO_TRANS_RETRY) {
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*ptpb++ = isc_tpb_wait;
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dbh->transaction_flags &= ~(PDO_TRANS_CONFLICT_RESOLUTION^PDO_TRANS_RETRY);
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} else {
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*ptpb++ = isc_tpb_nowait;
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dbh->transaction_flags &= ~(PDO_TRANS_CONFLICT_RESOLUTION^PDO_TRANS_ABORT);
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}
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}
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#endif
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if (isc_start_transaction(H->isc_status, &H->tr, 1, &H->db, (unsigned short)(ptpb-tpb), tpb)) {
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RECORD_ERROR(dbh);
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return 0;
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}
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return 1;
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}
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/* }}} */
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/* called by PDO to commit a transaction */
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static int firebird_handle_commit(pdo_dbh_t *dbh TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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if (isc_commit_transaction(H->isc_status, &H->tr)) {
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RECORD_ERROR(dbh);
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return 0;
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}
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return 1;
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}
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/* }}} */
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/* called by PDO to rollback a transaction */
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static int firebird_handle_rollback(pdo_dbh_t *dbh TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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if (isc_rollback_transaction(H->isc_status, &H->tr)) {
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RECORD_ERROR(dbh);
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return 0;
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}
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return 1;
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}
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/* }}} */
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/* used by prepare and exec to allocate a statement handle and prepare the SQL */
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static int firebird_alloc_prepare_stmt(pdo_dbh_t *dbh, const char *sql, long sql_len, /* {{{ */
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XSQLDA *out_sqlda, isc_stmt_handle *s, HashTable *named_params TSRMLS_DC)
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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char *c, *new_sql, in_quote, in_param, pname[64], *ppname;
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long l, pindex = -1;
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/* Firebird allows SQL statements up to 64k, so bail if it doesn't fit */
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if (sql_len > SHORT_MAX) {
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strcpy(dbh->error_code, "01004");
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return 0;
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}
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/* start a new transaction implicitly if auto_commit is enabled and no transaction is open */
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if (dbh->auto_commit && !dbh->in_txn) {
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/* dbh->transaction_flags = PDO_TRANS_READ_UNCOMMITTED; */
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if (!firebird_handle_begin(dbh TSRMLS_CC)) {
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return 0;
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}
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dbh->in_txn = 1;
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}
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/* allocate the statement */
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if (isc_dsql_allocate_statement(H->isc_status, &H->db, s)) {
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RECORD_ERROR(dbh);
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return 0;
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}
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/* in order to support named params, which Firebird itself doesn't,
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we need to replace :foo by ?, and store the name we just replaced */
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new_sql = c = emalloc(sql_len+1);
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for (l = in_quote = in_param = 0; l <= sql_len; ++l) {
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if ( !(in_quote ^= (sql[l] == '\''))) {
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if (!in_param) {
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switch (sql[l]) {
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case ':':
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in_param = 1;
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ppname = pname;
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case '?':
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*c++ = '?';
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++pindex;
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continue;
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}
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} else {
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if ((in_param &= (sql[l] == '_') || (sql[l] >= 'A' && sql[l] <= 'Z')
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|| (sql[l] >= 'a' && sql[l] <= 'z') || (sql[l] >= '0' && sql[l] <= '9'))) {
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*ppname++ = sql[l];
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continue;
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} else {
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*ppname++ = 0;
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if (named_params) {
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zend_hash_update(named_params, pname, (unsigned int)(ppname-pname),
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(void*)&pindex, sizeof(long)+1,NULL);
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}
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}
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}
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}
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*c++ = sql[l];
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}
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/* prepare the statement */
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if (isc_dsql_prepare(H->isc_status, &H->tr, s, 0, new_sql, PDO_FB_DIALECT, out_sqlda)) {
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RECORD_ERROR(dbh);
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efree(new_sql);
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return 0;
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}
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efree(new_sql);
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return 1;
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}
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/* }}} */
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/* called by PDO to set a driver-specific dbh attribute */
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static int firebird_handle_set_attribute(pdo_dbh_t *dbh, long attr, zval *val TSRMLS_DC) /* {{{ */
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{
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pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
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switch (attr) {
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case PDO_ATTR_AUTOCOMMIT:
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convert_to_boolean(val);
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/* ignore if the new value equals the old one */
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if (dbh->auto_commit ^ Z_BVAL_P(val)) {
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if (dbh->in_txn) {
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if (Z_BVAL_P(val)) {
|
|
/* turning on auto_commit with an open transaction is illegal, because
|
|
we won't know what to do with it */
|
|
H->last_app_error = "Cannot enable auto-commit while a transaction is already open";
|
|
return 0;
|
|
} else {
|
|
/* close the transaction */
|
|
if (!firebird_handle_commit(dbh TSRMLS_CC)) {
|
|
break;
|
|
}
|
|
dbh->in_txn = 0;
|
|
}
|
|
}
|
|
dbh->auto_commit = Z_BVAL_P(val);
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
/* callback to used to report database server info */
|
|
static void firebird_info_cb(void *arg, char const *s) /* {{{ */
|
|
{
|
|
if (arg) {
|
|
if (*(char*)arg) { /* second call */
|
|
strcat(arg, " ");
|
|
}
|
|
strcat(arg, s);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
/* called by PDO to get a driver-specific dbh attribute */
|
|
static int firebird_handle_get_attribute(pdo_dbh_t const *dbh, long attr, zval *val TSRMLS_DC) /* {{{ */
|
|
{
|
|
pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
|
|
|
|
switch (attr) {
|
|
char tmp[200];
|
|
|
|
case PDO_ATTR_AUTOCOMMIT:
|
|
ZVAL_LONG(val,dbh->auto_commit);
|
|
return 1;
|
|
|
|
case PDO_ATTR_CONNECTION_STATUS:
|
|
ZVAL_BOOL(val, !isc_version(&H->db, firebird_info_cb, NULL));
|
|
return 1;
|
|
|
|
case PDO_ATTR_CLIENT_VERSION: {
|
|
#if defined(__GNUC__) || defined(PHP_WIN32)
|
|
info_func_t info_func = NULL;
|
|
#ifdef __GNUC__
|
|
info_func = (info_func_t)dlsym(RTLD_DEFAULT, "isc_get_client_version");
|
|
#else
|
|
HMODULE l = GetModuleHandle("fbclient");
|
|
|
|
if (!l && !(l = GetModuleHandle("gds32"))) {
|
|
break;
|
|
}
|
|
info_func = (info_func_t)GetProcAddress(l, "isc_get_client_version");
|
|
#endif
|
|
if (info_func) {
|
|
info_func(tmp);
|
|
ZVAL_STRING(val,tmp,1);
|
|
} else {
|
|
ZVAL_STRING(val,"Firebird 1.0/Interbase 6",1);
|
|
}
|
|
#else
|
|
ZVAL_NULL(val);
|
|
#endif
|
|
}
|
|
return 1;
|
|
|
|
case PDO_ATTR_SERVER_VERSION:
|
|
case PDO_ATTR_SERVER_INFO:
|
|
*tmp = 0;
|
|
|
|
if (!isc_version(&H->db, firebird_info_cb, (void*)tmp)) {
|
|
ZVAL_STRING(val,tmp,1);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
/* called by PDO to retrieve driver-specific information about an error that has occurred */
|
|
static int pdo_firebird_fetch_error_func(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info TSRMLS_DC) /* {{{ */
|
|
{
|
|
pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data;
|
|
ISC_STATUS *s = H->isc_status;
|
|
char buf[400];
|
|
long i = 0, l, sqlcode = isc_sqlcode(s);
|
|
|
|
if (sqlcode) {
|
|
add_next_index_long(info, sqlcode);
|
|
|
|
while ((l = isc_interprete(&buf[i],&s))) {
|
|
i += l;
|
|
strcpy(&buf[i++], " ");
|
|
}
|
|
add_next_index_string(info, buf, 1);
|
|
} else {
|
|
add_next_index_long(info, -999);
|
|
add_next_index_string(info, const_cast(H->last_app_error),1);
|
|
}
|
|
return 1;
|
|
}
|
|
/* }}} */
|
|
|
|
static struct pdo_dbh_methods firebird_methods = { /* {{{ */
|
|
firebird_handle_closer,
|
|
firebird_handle_preparer,
|
|
firebird_handle_doer,
|
|
firebird_handle_quoter,
|
|
firebird_handle_begin,
|
|
firebird_handle_commit,
|
|
firebird_handle_rollback,
|
|
firebird_handle_set_attribute,
|
|
NULL, /* last_id not supported */
|
|
pdo_firebird_fetch_error_func,
|
|
firebird_handle_get_attribute,
|
|
NULL /* check_liveness */
|
|
};
|
|
/* }}} */
|
|
|
|
/* the driver-specific PDO handle constructor */
|
|
static int pdo_firebird_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_DC) /* {{{ */
|
|
{
|
|
struct pdo_data_src_parser vars[] = {
|
|
{ "dbname", NULL, 0 },
|
|
{ "charset", NULL, 0 },
|
|
{ "role", NULL, 0 }
|
|
};
|
|
int i, ret = 0;
|
|
pdo_firebird_db_handle *H = dbh->driver_data = pecalloc(1,sizeof(*H),dbh->is_persistent);
|
|
|
|
php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 3);
|
|
|
|
do {
|
|
static char const dpb_flags[] = {
|
|
isc_dpb_user_name, isc_dpb_password, isc_dpb_lc_ctype, isc_dpb_sql_role_name };
|
|
char const *dpb_values[] = { dbh->username, dbh->password, vars[1].optval, vars[2].optval };
|
|
char dpb_buffer[256] = { isc_dpb_version1 }, *dpb;
|
|
|
|
dpb = dpb_buffer + 1;
|
|
|
|
/* loop through all the provided arguments and set dpb fields accordingly */
|
|
for (i = 0; i < sizeof(dpb_flags); ++i) {
|
|
if (dpb_values[i]) {
|
|
dpb += sprintf(dpb, "%c%c%s", dpb_flags[i], (unsigned char)strlen(dpb_values[i]),
|
|
dpb_values[i]);
|
|
}
|
|
}
|
|
|
|
/* fire it up baby! */
|
|
if (isc_attach_database(H->isc_status, 0, vars[0].optval, &H->db,(short)(dpb-dpb_buffer),
|
|
dpb_buffer)) {
|
|
break;
|
|
}
|
|
|
|
dbh->methods = &firebird_methods;
|
|
dbh->native_case = PDO_CASE_UPPER;
|
|
dbh->alloc_own_columns = 1;
|
|
|
|
ret = 1;
|
|
|
|
} while (0);
|
|
|
|
for (i = 0; i < sizeof(vars)/sizeof(vars[0]); ++i) {
|
|
if (vars[i].freeme) {
|
|
efree(vars[i].optval);
|
|
}
|
|
}
|
|
|
|
if (!ret) {
|
|
firebird_handle_closer(dbh TSRMLS_CC);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
/* }}} */
|
|
|
|
pdo_driver_t pdo_firebird_driver = { /* {{{ */
|
|
PDO_DRIVER_HEADER(firebird),
|
|
pdo_firebird_handle_factory
|
|
};
|
|
/* }}} */
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
* vim600: noet sw=4 ts=4 fdm=marker
|
|
* vim<600: noet sw=4 ts=4
|
|
*/
|