dbx_oci8.c

php-4.4.7学习linux时下载的源代码

/*
   +----------------------------------------------------------------------+
   | PHP Version 4                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2007 The PHP Group                                |
   +----------------------------------------------------------------------+
   | dbx module version 1.0                                               |
   +----------------------------------------------------------------------+
   | Copyright (c) 2001 Guidance Rotterdam BV                             |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 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_01.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          |
   | [e-mail] so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author : Marc Boeren         <[e-mail]>                      |
   +----------------------------------------------------------------------+
*/

/* $Id: dbx_oci8.c,v 1.13.2.1.8.2 2007/01/01 09:46:41 sebastian Exp $ */

#include "dbx.h"
#include "dbx_oci8.h"

#define OCI_ASSOC        1<<0
#define OCI_NUM          1<<1
#define OCI_RETURN_NULLS 1<<2
#define OCI_RETURN_LOBS  1<<3

int dbx_oci8_connect(zval **rv, zval **host, zval **db, zval **username, zval **password, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns connection handle as resource on success or 0 as long on failure */
	int number_of_arguments=3;
	zval **arguments[3];
	zval *returned_zval=NULL;

	arguments[0]=username;
	arguments[1]=password;
	arguments[2]=db;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCILogon", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_RESOURCE) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_pconnect(zval **rv, zval **host, zval **db, zval **username, zval **password, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns connection handle as resource on success or 0 as long on failure */
	int number_of_arguments=3;
	zval **arguments[3];
	zval *returned_zval=NULL;

	arguments[0]=username;
	arguments[1]=password;
	arguments[2]=db;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIPLogon", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_RESOURCE) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_close(zval **rv, zval **dbx_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns 1 as long on success or 0 as long on failure */
	/* actually, ocilogoff officially does nothing, so what should I return? */
	/* I will just return NULL right now and change the test accordingly */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=dbx_handle;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCILogOff", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_BOOL) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_query(zval **rv, zval **dbx_handle, zval **db_name, zval **sql_statement, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns 1 as long or a result identifier as resource on success or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *returned_zval=NULL;
	zval *execute_zval=NULL;
	zval *statementtype_zval=NULL;

	arguments[0]=dbx_handle;
	arguments[1]=sql_statement;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIParse", &returned_zval, number_of_arguments, arguments);
	/* OCIParse returns a bool for failure, or a statement_identifier for valid sql_statements */
	if (!returned_zval || (Z_TYPE_P(returned_zval)!=IS_BOOL && Z_TYPE_P(returned_zval)!=IS_RESOURCE)) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	number_of_arguments=1;
	arguments[0]=&returned_zval;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIExecute", &execute_zval, number_of_arguments, arguments);
	/* OCIExecute returns a bool for success or failure */
	if (!execute_zval || Z_TYPE_P(execute_zval)!=IS_BOOL || Z_BVAL_P(execute_zval)==0) {
		if (execute_zval) zval_ptr_dtor(&execute_zval);
		zval_ptr_dtor(&returned_zval);
		return 0;
	}
	number_of_arguments=1;
	arguments[0]=&returned_zval;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIStatementType", &statementtype_zval, number_of_arguments, arguments);
	/* OCIStatementType returns a string. 'SELECT' means there are results */
	if (!statementtype_zval || Z_TYPE_P(statementtype_zval)!=IS_STRING) {
		if (statementtype_zval) zval_ptr_dtor(&statementtype_zval);
		if (execute_zval) zval_ptr_dtor(&execute_zval);
		zval_ptr_dtor(&returned_zval);
		return 0;
	}

	if (!zend_binary_strcmp(Z_STRVAL_P(statementtype_zval), Z_STRLEN_P(statementtype_zval), "SELECT", sizeof("SELECT")-sizeof(""))) {
		/* it is a select, so results are returned */
		MOVE_RETURNED_TO_RV(rv, returned_zval);
	} else {
		/* it is not a select, so just return success */
		zval_ptr_dtor(&returned_zval);
		MAKE_STD_ZVAL(returned_zval);
		ZVAL_BOOL(returned_zval, 1);
		MOVE_RETURNED_TO_RV(rv, returned_zval);
	}
	if (statementtype_zval) zval_ptr_dtor(&statementtype_zval);
	if (execute_zval) zval_ptr_dtor(&execute_zval);

	return 1;
}

int dbx_oci8_getcolumncount(zval **rv, zval **result_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-count as long on success or 0 as long on failure */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=result_handle;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCINumCols", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_LONG) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_getcolumnname(zval **rv, zval **result_handle, long column_index, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-name as string on success or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *zval_column_index;
	zval *returned_zval=NULL;

	MAKE_STD_ZVAL(zval_column_index);
	/* dbx uses 0-based column-indices, oci8 uses 1-based indices... */
	ZVAL_LONG(zval_column_index, column_index+1);
	arguments[0]=result_handle;
	arguments[1]=&zval_column_index;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIColumnName", &returned_zval, number_of_arguments, arguments);
	/* OCIColumnName returns a string */
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_column_index);
		return 0;
	}
	FREE_ZVAL(zval_column_index);
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_getcolumntype(zval **rv, zval **result_handle, long column_index, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-type as string on success or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *zval_column_index;
	zval *returned_zval=NULL;

	MAKE_STD_ZVAL(zval_column_index);
	/* dbx uses 0-based column-indices, oci8 uses 1-based indices... */
	ZVAL_LONG(zval_column_index, column_index+1);
	arguments[0]=result_handle;
	arguments[1]=&zval_column_index;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIColumnType", &returned_zval, number_of_arguments, arguments);
	/* OCIColumnType returns a string??? */
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_column_index);
		return 0;
	}
	FREE_ZVAL(zval_column_index);

	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_oci8_getrow(zval **rv, zval **result_handle, long row_number, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns array[0..columncount-1] as strings on success or 0 as long on failure */
	int number_of_arguments=3;
	zval **arguments[3];
	zval *zval_resulttype=NULL;
	zval *zval_returned_array=NULL;
	zval *returned_zval=NULL;

	MAKE_STD_ZVAL(zval_returned_array); /* no value needed, it will be overwritten anyway */
	ZVAL_EMPTY_STRING(zval_returned_array); /* there seems to be some weird mem-bug, so assigning a value anyway */
	MAKE_STD_ZVAL(zval_resulttype);
	ZVAL_LONG(zval_resulttype, OCI_NUM | OCI_RETURN_NULLS | OCI_RETURN_LOBS); /* no ASSOC, dbx handles that part */
	arguments[0]=result_handle;
	arguments[1]=&zval_returned_array;
	arguments[2]=&zval_resulttype;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIFetchInto", &returned_zval, number_of_arguments, arguments);
	/* OCIFetchInto returns the number of columns as an integer on success and FALSE */
	/* on failure. The actual array is passed back in arg[1] */
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_LONG || Z_LVAL_P(returned_zval)==0) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_resulttype);
		FREE_ZVAL(zval_returned_array);
		return 0;
	}
	FREE_ZVAL(zval_resulttype);
	zval_ptr_dtor(&returned_zval);
	MOVE_RETURNED_TO_RV(rv, zval_returned_array);
	return 1;
}

int dbx_oci8_error(zval **rv, zval **dbx_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns string */
	/* OCIError needs a statement handle most of the times, and I can only provide */
	/* a db-handle which is only needed some of the time. For now, I have disabled */
	/* the dbx_error for the oci8 extension */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;
	zval *returned_message_zval=NULL;
	arguments[0]=dbx_handle;
	if (!dbx_handle) number_of_arguments=0;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "OCIError", &returned_zval, number_of_arguments, arguments);
	/* OCIError should returns an assoc array containing code & message, dbx needs the message */
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_ARRAY) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	/* get the messagestring here */
	if (zend_hash_find(Z_ARRVAL_P(returned_zval), "message", strlen("message")+1, (void **) &returned_message_zval)==FAILURE) {
		/* oops! no msg? */
		zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_message_zval);
	zval_ptr_dtor(&returned_zval);
	return 1;
}

int dbx_oci8_esc(zval **rv, zval **dbx_handle, zval **string, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns escaped string */
	/* replace ' with '' */
	char * str;
	int len;
	char * tmpstr;
	int tmplen;

	if (Z_STRLEN_PP(string) == 0) {
		ZVAL_EMPTY_STRING(*rv);
		return 1;
	}
	tmpstr = estrdup(Z_STRVAL_PP(string));
	tmplen = Z_STRLEN_PP(string);
	/* php_str_to_str uses a smart_str that allocates memory */
	/* this memory must be freed or passed on to rv */
	str = php_str_to_str(tmpstr, tmplen, "'", 1, "''", 2, &len);
	efree(tmpstr);

	ZVAL_STRINGL(*rv, str, len, 0);

	return 1;
}

/*
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 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */