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<?php
/*
** Zabbix
** Copyright (C) 2001-2016 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
class CNewValidator {
private $rules;
private $input = [];
private $output = [];
private $errors = [];
private $errorsFatal = [];
/**
* Parser for validation rules.
*
* @var CValidationRule
*/
private $validationRuleParser;
/**
* Validation errors.
*
* @var array
*/
private $error;
public function __construct(array $input, array $rules) {
$this->input = $input;
$this->rules = $rules;
$this->validationRuleParser = new CValidationRule();
$this->validate();
}
/**
* Returns true if the given $value is valid, or set's an error and returns false otherwise.
*/
private function validate() {
foreach ($this->rules as $field => $rule) {
$result = $this->validateField($field, $rule);
if (array_key_exists($field, $this->input)) {
$this->output[$field] = $this->input[$field];
}
}
}
private function validateField($field, $rules) {
if (false === ($rules = $this->validationRuleParser->parse($rules))) {
$this->addError(true, $this->validationRuleParser->getError());
return false;
}
$fatal = array_key_exists('fatal', $rules);
foreach ($rules as $rule => $params) {
switch ($rule) {
/*
* 'fatal' => true
*/
case 'fatal':
// nothing to do
break;
/*
* 'not_empty' => true
*/
case 'not_empty':
if (array_key_exists($field, $this->input) && $this->input[$field] === '') {
$this->addError($fatal,
_s('Incorrect value for field "%1$s": %2$s.', $field, _('cannot be empty'))
);
return false;
}
break;
case 'json':
if (array_key_exists($field, $this->input)) {
if (!is_string($this->input[$field]) || !CJs::decodeJson($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
/*
* 'in' => array(<values)
*/
case 'in':
if (array_key_exists($field, $this->input)) {
if (!is_string($this->input[$field]) || !in_array($this->input[$field], $params)) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
case 'int32':
if (array_key_exists($field, $this->input)) {
if (!is_string($this->input[$field]) || !$this->is_int32($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
case 'id':
if (array_key_exists($field, $this->input)) {
if (!is_string($this->input[$field]) || !$this->is_id($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
/*
* 'array_id' => true
*/
case 'array_id':
if (array_key_exists($field, $this->input)) {
if (!is_array($this->input[$field]) || !$this->is_array_id($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
/*
* 'array_db' => array(
* 'table' => <table_name>,
* 'field' => <field_name>
* )
*/
case 'array':
if (array_key_exists($field, $this->input) && !is_array($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
);
return false;
}
break;
/*
* 'array_db' => array(
* 'table' => <table_name>,
* 'field' => <field_name>
* )
*/
case 'array_db':
if (array_key_exists($field, $this->input)) {
if (!is_array($this->input[$field])
|| !$this->is_array_db($this->input[$field], $params['table'], $params['field'])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
/*
* 'db' => array(
* 'table' => <table_name>,
* 'field' => <field_name>
* )
*/
case 'db':
if (array_key_exists($field, $this->input)) {
if (!$this->is_db($this->input[$field], $params['table'], $params['field'])) {
$this->addError($fatal,
_s('Incorrect value "%1$s" for "%2$s" field.', $this->input[$field], $field)
// TODO: stringify($this->input[$field]) ???
);
return false;
}
}
break;
/*
* 'required' => true
*/
case 'required':
if (!array_key_exists($field, $this->input)) {
$this->addError($fatal, _s('Field "%1$s" is mandatory.', $field));
return false;
}
break;
/*
* 'string' => true
*/
case 'string':
if (array_key_exists($field, $this->input) && !is_string($this->input[$field])) {
$this->addError($fatal,
_s('Incorrect value for field "%1$s": %2$s.', $field, _('a character string is expected'))
);
return false;
}
break;
default:
// the message can be not translated because it is an internal error
$this->addError($fatal, 'Invalid validation rule "'.$rule.'".');
return false;
}
}
return true;
}
private function is_id($value) {
if (1 != preg_match('/^[0-9]+$/', $value)) {
return false;
}
// between 0 and _I64_MAX
return (bccomp($value, '0') >= 0 && bccomp($value, '9223372036854775807') <= 0);
}
public static function is_int32($value) {
if (1 != preg_match('/^\-?[0-9]+$/', $value)) {
return false;
}
// between INT_MIN and INT_MAX
return (bccomp($value, '-2147483648') >= 0 && bccomp($value, '2147483647') <= 0);
}
public static function is_uint64($value) {
if (1 != preg_match('/^[0-9]+$/', $value)) {
return false;
}
// between 0 and _UI64_MAX
return (bccomp($value, '0') >= 0 && bccomp($value, '18446744073709551615') <= 0);
}
private function check_db_value($field_schema, $value) {
switch ($field_schema['type']) {
case DB::FIELD_TYPE_ID:
return $this->is_id($value);
case DB::FIELD_TYPE_INT:
return $this->is_int32($value);
case DB::FIELD_TYPE_CHAR:
return (mb_strlen($value) <= $field_schema['length']);
case DB::FIELD_TYPE_TEXT:
// TODO: check length
return true;
default:
return false;
}
}
private function is_array_id(array $values, $table, $field) {
$table_schema = DB::getSchema($table);
foreach ($values as $value) {
if (!is_string($value) || !$this->is_id($value)) {
return false;
}
}
return true;
}
private function is_array_db(array $values, $table, $field) {
$table_schema = DB::getSchema($table);
foreach ($values as $value) {
if (!is_string($value) || !$this->check_db_value($table_schema['fields'][$field], $value)) {
return false;
}
}
return true;
}
private function is_db($value, $table, $field) {
$table_schema = DB::getSchema($table);
return (is_string($value) && $this->check_db_value($table_schema['fields'][$field], $value));
}
/**
* Add validation error.
*
* @return string
*/
public function addError($fatal, $error) {
if ($fatal) {
$this->errorsFatal[] = $error;
}
else {
$this->errors[] = $error;
}
}
/**
* Get valid fields.
*
* @return array of fields passed validation
*/
public function getValidInput() {
return $this->output;
}
/**
* Returns array of error messages.
*
* @return array
*/
public function getAllErrors() {
return array_merge($this->errorsFatal, $this->errors);
}
/**
* Returns true if validation failed with errors.
*
* @return bool
*/
public function isError() {
return (bool) $this->errors;
}
/**
* Returns true if validation failed with fatal errors.
*
* @return bool
*/
public function isErrorFatal() {
return (bool) $this->errorsFatal;
}
}
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