php-src/ext/pdo_pgsql/pgsql_driver.c

/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 1997-2004 The PHP Group                                |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.0 of the PHP license,       |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_0.txt.                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Author: Edin Kadribasic <edink@emini.dk>                             |
  +----------------------------------------------------------------------+
*/

/* $Id$ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "pdo/php_pdo.h"
#include "pdo/php_pdo_driver.h"
#include "php_pdo_pgsql.h"
#include "php_pdo_pgsql_int.h"

int _pdo_pgsql_error(char *what, char *errmsg, const char *file, int line TSRMLS_DC) /* {{{ */
{
	php_error_docref(NULL TSRMLS_CC, E_WARNING, "(%s:%d) %s", file, line, errmsg);
	return 1;
}
/* }}} */

int pgsql_handle_error(pdo_dbh_t *dbh, pdo_pgsql_db_handle *H, int errcode) /* {{{ */
{
	return 0;
}
/* }}} */

static int pgsql_handle_closer(pdo_dbh_t *dbh TSRMLS_DC) /* {{{ */
{
	pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;

	if (H->server) {
		PQfinish(H->server);
		H->server = NULL;
	}
	return 0;
}
/* }}} */

static int pgsql_handle_preparer(pdo_dbh_t *dbh, const char *sql, long sql_len, pdo_stmt_t *stmt, long options, zval *driver_options TSRMLS_DC)
{
	pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
	pdo_pgsql_stmt *S = ecalloc(1, sizeof(pdo_pgsql_stmt));

	S->H = H;
	stmt->driver_data = S;
	stmt->methods = &pgsql_stmt_methods;
	
	return 1;
}

static int pgsql_handle_doer(pdo_dbh_t *dbh, const char *sql, long sql_len TSRMLS_DC)
{
	pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;

	return 0;
}

static int pgsql_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquotedlen, char **quoted, int *quotedlen  TSRMLS_DC)
{
	pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
	*quoted = emalloc(2*unquotedlen + 3);
	(*quoted)[0] = '"';
    *quotedlen = PQescapeString(*quoted + 1, unquoted, unquotedlen);
	(*quoted)[*quotedlen + 1] = '"';
	(*quoted)[*quotedlen + 2] = '\0';
	*quotedlen += 2;
	return 1;
}


static struct pdo_dbh_methods pgsql_methods = {
	pgsql_handle_closer,
	pgsql_handle_preparer,
	pgsql_handle_doer,
	pgsql_handle_quoter
};

static int pdo_pgsql_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_DC) /* {{{ */
{
	pdo_pgsql_db_handle *H;
	int i, ret = 0;
	char *host, *port, *dbname;
	struct pdo_data_src_parser vars[] = {
		{ "host", "", 0 },
		{ "port", "", 0 },
        { "dbname", "", 0 },
	};

	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 3);

	H = pecalloc(1, sizeof(pdo_pgsql_db_handle), dbh->is_persistent);
	dbh->driver_data = H;
	
	/* handle for the server */
	host = vars[0].optval;
	port = vars[1].optval;
	dbname = vars[2].optval;

	H->server = 
		PQsetdbLogin(host,
					 port,
					 NULL, /* options */
					 NULL, /* tty */
					 dbname,
					 dbh->username,
					 dbh->password
					 );
	
	if (PQstatus(H->server) != CONNECTION_OK) {
		H->last_err = PQerrorMessage(H->server);
		pdo_pgsql_error("pdo_pgsql_handle_factory", H->last_err);
		goto cleanup;
	}

	H->attached = 1;

	dbh->methods = &pgsql_methods;
	dbh->alloc_own_columns = 1;
	dbh->supports_placeholders = 1;
	dbh->emulate_prepare = 1;
	dbh->placeholders_can_be_strings = 1;
	dbh->max_escaped_char_length = 2;

	ret = 1;
	
cleanup:
	for (i = 0; i < sizeof(vars)/sizeof(vars[0]); i++) {
		if (vars[i].freeme) {
			efree(vars[i].optval);
		}
	}

	if (!ret) {
		pgsql_handle_closer(dbh TSRMLS_CC);
	}

	return ret;
}
/* }}} */

pdo_driver_t pdo_pgsql_driver = {
	PDO_DRIVER_HEADER(pgsql),
	pdo_pgsql_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
 */