patrickpr /
trapdirector
@@ -12,204 +12,204 @@ |
||
| 12 | 12 | trait RuleUtils |
| 13 | 13 | { |
| 14 | 14 | |
| 15 | - /** rule eval starting from $token |
|
| 16 | - * @param string $rule |
|
| 17 | - * @param int $item |
|
| 18 | - */ |
|
| 19 | - abstract public function evaluation($rule,&$item); |
|
| 15 | + /** rule eval starting from $token |
|
| 16 | + * @param string $rule |
|
| 17 | + * @param int $item |
|
| 18 | + */ |
|
| 19 | + abstract public function evaluation($rule,&$item); |
|
| 20 | 20 | |
| 21 | - /** |
|
| 22 | - * Get full number |
|
| 23 | - * @param string $rule Rule as string |
|
| 24 | - * @param int $item current eval position |
|
| 25 | - * @return array<int,string> |
|
| 26 | - */ |
|
| 27 | - private function get_number(string $rule,int &$item) |
|
| 28 | - { |
|
| 29 | - $item2=$item+1; |
|
| 30 | - while ( |
|
| 31 | - ($item2!=strlen($rule)) |
|
| 32 | - && (preg_match('/[\-0-9\.]/',$rule[$item2]))) |
|
| 33 | - { |
|
| 34 | - $item2++ ; |
|
| 35 | - } |
|
| 36 | - $val=substr($rule,$item,$item2-$item); |
|
| 37 | - $item=$item2; |
|
| 38 | - //echo "number ".$val."\n"; |
|
| 21 | + /** |
|
| 22 | + * Get full number |
|
| 23 | + * @param string $rule Rule as string |
|
| 24 | + * @param int $item current eval position |
|
| 25 | + * @return array<int,string> |
|
| 26 | + */ |
|
| 27 | + private function get_number(string $rule,int &$item) |
|
| 28 | + { |
|
| 29 | + $item2=$item+1; |
|
| 30 | + while ( |
|
| 31 | + ($item2!=strlen($rule)) |
|
| 32 | + && (preg_match('/[\-0-9\.]/',$rule[$item2]))) |
|
| 33 | + { |
|
| 34 | + $item2++ ; |
|
| 35 | + } |
|
| 36 | + $val=substr($rule,$item,$item2-$item); |
|
| 37 | + $item=$item2; |
|
| 38 | + //echo "number ".$val."\n"; |
|
| 39 | 39 | |
| 40 | - return array(0,$val); |
|
| 41 | - } |
|
| 40 | + return array(0,$val); |
|
| 41 | + } |
|
| 42 | 42 | |
| 43 | - /** |
|
| 44 | - * Get a string (between ") |
|
| 45 | - * @param string $rule Rule as string |
|
| 46 | - * @param int $item current eval position |
|
| 47 | - * @return array<int,string> |
|
| 48 | - */ |
|
| 49 | - private function get_string(string $rule,int &$item) |
|
| 50 | - { |
|
| 51 | - $item++; |
|
| 52 | - $item2=$this->eval_getNext($rule,$item,'"'); |
|
| 53 | - $val=substr($rule,$item,$item2-$item-1); |
|
| 54 | - $item=$item2; |
|
| 55 | - //echo "string : ".$val."\n"; |
|
| 56 | - return array(1,$val); |
|
| 43 | + /** |
|
| 44 | + * Get a string (between ") |
|
| 45 | + * @param string $rule Rule as string |
|
| 46 | + * @param int $item current eval position |
|
| 47 | + * @return array<int,string> |
|
| 48 | + */ |
|
| 49 | + private function get_string(string $rule,int &$item) |
|
| 50 | + { |
|
| 51 | + $item++; |
|
| 52 | + $item2=$this->eval_getNext($rule,$item,'"'); |
|
| 53 | + $val=substr($rule,$item,$item2-$item-1); |
|
| 54 | + $item=$item2; |
|
| 55 | + //echo "string : ".$val."\n"; |
|
| 56 | + return array(1,$val); |
|
| 57 | 57 | |
| 58 | - } |
|
| 58 | + } |
|
| 59 | 59 | |
| 60 | - /** |
|
| 61 | - * Parse elements inside () : jumps over "" and count parenthesis. |
|
| 62 | - * Ex : ( "test" != ")test" & (1==2) ) will return "test" != ")test" & (1==2) |
|
| 63 | - * @param string $rule : the current rule |
|
| 64 | - * @param int $item : actual position in rule |
|
| 65 | - * @throws Exception |
|
| 66 | - * @return string : everything inside parenthesis |
|
| 67 | - */ |
|
| 68 | - private function parse_parenthesis(string $rule,int &$item) : string |
|
| 69 | - { |
|
| 70 | - $item++; |
|
| 71 | - $start=$item; |
|
| 72 | - $parenthesisCount=0; |
|
| 73 | - while (($item < strlen($rule)) // Not end of string AND |
|
| 74 | - && ( ($rule[$item] != ')' ) || $parenthesisCount > 0) ) // Closing ')' or embeded () |
|
| 75 | - { |
|
| 76 | - if ($rule[$item] == '"' ) |
|
| 77 | - { // pass through string |
|
| 78 | - $item++; |
|
| 79 | - $item=$this->eval_getNext($rule,$item,'"'); |
|
| 80 | - continue; |
|
| 81 | - } |
|
| 82 | - if ($rule[$item] == '(') |
|
| 83 | - { |
|
| 84 | - $parenthesisCount++; |
|
| 85 | - } |
|
| 86 | - if ($rule[$item] == ')') |
|
| 87 | - { |
|
| 88 | - $parenthesisCount--; |
|
| 89 | - } |
|
| 90 | - $item++; |
|
| 91 | - } |
|
| 60 | + /** |
|
| 61 | + * Parse elements inside () : jumps over "" and count parenthesis. |
|
| 62 | + * Ex : ( "test" != ")test" & (1==2) ) will return "test" != ")test" & (1==2) |
|
| 63 | + * @param string $rule : the current rule |
|
| 64 | + * @param int $item : actual position in rule |
|
| 65 | + * @throws Exception |
|
| 66 | + * @return string : everything inside parenthesis |
|
| 67 | + */ |
|
| 68 | + private function parse_parenthesis(string $rule,int &$item) : string |
|
| 69 | + { |
|
| 70 | + $item++; |
|
| 71 | + $start=$item; |
|
| 72 | + $parenthesisCount=0; |
|
| 73 | + while (($item < strlen($rule)) // Not end of string AND |
|
| 74 | + && ( ($rule[$item] != ')' ) || $parenthesisCount > 0) ) // Closing ')' or embeded () |
|
| 75 | + { |
|
| 76 | + if ($rule[$item] == '"' ) |
|
| 77 | + { // pass through string |
|
| 78 | + $item++; |
|
| 79 | + $item=$this->eval_getNext($rule,$item,'"'); |
|
| 80 | + continue; |
|
| 81 | + } |
|
| 82 | + if ($rule[$item] == '(') |
|
| 83 | + { |
|
| 84 | + $parenthesisCount++; |
|
| 85 | + } |
|
| 86 | + if ($rule[$item] == ')') |
|
| 87 | + { |
|
| 88 | + $parenthesisCount--; |
|
| 89 | + } |
|
| 90 | + $item++; |
|
| 91 | + } |
|
| 92 | 92 | |
| 93 | - if ($item==strlen($rule)) {throw new Exception("no closing () in ".$rule ." at " .$item);} |
|
| 94 | - $val=substr($rule,$start,$item-$start); |
|
| 95 | - $item++; |
|
| 96 | - return $val; |
|
| 97 | - } |
|
| 93 | + if ($item==strlen($rule)) {throw new Exception("no closing () in ".$rule ." at " .$item);} |
|
| 94 | + $val=substr($rule,$start,$item-$start); |
|
| 95 | + $item++; |
|
| 96 | + return $val; |
|
| 97 | + } |
|
| 98 | 98 | |
| 99 | - /** |
|
| 100 | - * Get and eval a grouped condition - ex : (1==1) |
|
| 101 | - * @param string $rule |
|
| 102 | - * @param int $item |
|
| 103 | - * @return array<int,string> |
|
| 104 | - */ |
|
| 105 | - private function get_group(string $rule,int &$item) : array |
|
| 106 | - { |
|
| 107 | - // gets eveything inside parenthesis |
|
| 108 | - $val=$this->parse_parenthesis($rule, $item); |
|
| 109 | - // Returns boolean with evaluation of all inside parenthesis |
|
| 110 | - $start=0; |
|
| 111 | - return array(2,$this->evaluation($val,$start)); |
|
| 112 | - } |
|
| 99 | + /** |
|
| 100 | + * Get and eval a grouped condition - ex : (1==1) |
|
| 101 | + * @param string $rule |
|
| 102 | + * @param int $item |
|
| 103 | + * @return array<int,string> |
|
| 104 | + */ |
|
| 105 | + private function get_group(string $rule,int &$item) : array |
|
| 106 | + { |
|
| 107 | + // gets eveything inside parenthesis |
|
| 108 | + $val=$this->parse_parenthesis($rule, $item); |
|
| 109 | + // Returns boolean with evaluation of all inside parenthesis |
|
| 110 | + $start=0; |
|
| 111 | + return array(2,$this->evaluation($val,$start)); |
|
| 112 | + } |
|
| 113 | 113 | |
| 114 | - /** |
|
| 115 | - * @param string $rule |
|
| 116 | - * @param int $item |
|
| 117 | - * @throws Exception |
|
| 118 | - * @return array<int,string> |
|
| 119 | - */ |
|
| 120 | - private function get_function(string $rule,int &$item) : array |
|
| 121 | - { |
|
| 122 | - // function is : __function(param1,param2...) |
|
| 123 | - $start=$item; |
|
| 124 | - while (($item < strlen($rule)) && ($rule[$item] != '(' )) // Not end of string AND not opening '(' |
|
| 125 | - { |
|
| 126 | - $item++; |
|
| 127 | - } |
|
| 128 | - if ($item==strlen($rule)) {throw new Exception("no opening () for function in ".$rule ." at " .$item);} |
|
| 114 | + /** |
|
| 115 | + * @param string $rule |
|
| 116 | + * @param int $item |
|
| 117 | + * @throws Exception |
|
| 118 | + * @return array<int,string> |
|
| 119 | + */ |
|
| 120 | + private function get_function(string $rule,int &$item) : array |
|
| 121 | + { |
|
| 122 | + // function is : __function(param1,param2...) |
|
| 123 | + $start=$item; |
|
| 124 | + while (($item < strlen($rule)) && ($rule[$item] != '(' )) // Not end of string AND not opening '(' |
|
| 125 | + { |
|
| 126 | + $item++; |
|
| 127 | + } |
|
| 128 | + if ($item==strlen($rule)) {throw new Exception("no opening () for function in ".$rule ." at " .$item);} |
|
| 129 | 129 | |
| 130 | - // get parameters between parenthesis |
|
| 130 | + // get parameters between parenthesis |
|
| 131 | 131 | |
| 132 | - $this->parse_parenthesis($rule, $item); |
|
| 132 | + $this->parse_parenthesis($rule, $item); |
|
| 133 | 133 | |
| 134 | - $val=substr($rule,$start,$item-$start); |
|
| 134 | + $val=substr($rule,$start,$item-$start); |
|
| 135 | 135 | |
| 136 | - $this->logging->log('got function ' . $val,DEBUG); |
|
| 136 | + $this->logging->log('got function ' . $val,DEBUG); |
|
| 137 | 137 | |
| 138 | - return array(2,$this->trapClass->pluginClass->evaluateFunctionString($val)); |
|
| 138 | + return array(2,$this->trapClass->pluginClass->evaluateFunctionString($val)); |
|
| 139 | 139 | |
| 140 | - } |
|
| 140 | + } |
|
| 141 | 141 | |
| 142 | - /** Find next token $tok in $rule starting at $item |
|
| 143 | - * @param string $rule |
|
| 144 | - * @param int $item |
|
| 145 | - * @param string $tok : token to search for |
|
| 146 | - * @throws Exception |
|
| 147 | - * @return array<int,string> |
|
| 148 | - */ |
|
| 149 | - protected function eval_getNext(string $rule,int $item,string $tok) |
|
| 150 | - { |
|
| 151 | - while ( |
|
| 152 | - ($rule[$item] != $tok ) |
|
| 153 | - && ($item < strlen($rule))) |
|
| 154 | - { |
|
| 155 | - $item++; |
|
| 156 | - } |
|
| 157 | - if ($item==strlen($rule)) { |
|
| 158 | - throw new Exception("closing '".$tok."' not found in ".$rule ." at " .$item); |
|
| 159 | - } |
|
| 160 | - return $item+1; |
|
| 161 | - } |
|
| 142 | + /** Find next token $tok in $rule starting at $item |
|
| 143 | + * @param string $rule |
|
| 144 | + * @param int $item |
|
| 145 | + * @param string $tok : token to search for |
|
| 146 | + * @throws Exception |
|
| 147 | + * @return array<int,string> |
|
| 148 | + */ |
|
| 149 | + protected function eval_getNext(string $rule,int $item,string $tok) |
|
| 150 | + { |
|
| 151 | + while ( |
|
| 152 | + ($rule[$item] != $tok ) |
|
| 153 | + && ($item < strlen($rule))) |
|
| 154 | + { |
|
| 155 | + $item++; |
|
| 156 | + } |
|
| 157 | + if ($item==strlen($rule)) { |
|
| 158 | + throw new Exception("closing '".$tok."' not found in ".$rule ." at " .$item); |
|
| 159 | + } |
|
| 160 | + return $item+1; |
|
| 161 | + } |
|
| 162 | 162 | |
| 163 | - /** get negate (!) and return true if found - and pass it with item++ - |
|
| 164 | - * @param string $rule |
|
| 165 | - * @param int $item |
|
| 166 | - * @return boolean |
|
| 167 | - */ |
|
| 168 | - private function check_negate_first(string $rule,int &$item) |
|
| 169 | - { |
|
| 170 | - if ( $rule[$item] == '!') // If '!' found, negate next expression. |
|
| 171 | - { |
|
| 172 | - $item++; |
|
| 173 | - return true; |
|
| 174 | - } |
|
| 175 | - else |
|
| 176 | - { |
|
| 177 | - return false; |
|
| 178 | - } |
|
| 179 | - } |
|
| 163 | + /** get negate (!) and return true if found - and pass it with item++ - |
|
| 164 | + * @param string $rule |
|
| 165 | + * @param int $item |
|
| 166 | + * @return boolean |
|
| 167 | + */ |
|
| 168 | + private function check_negate_first(string $rule,int &$item) |
|
| 169 | + { |
|
| 170 | + if ( $rule[$item] == '!') // If '!' found, negate next expression. |
|
| 171 | + { |
|
| 172 | + $item++; |
|
| 173 | + return true; |
|
| 174 | + } |
|
| 175 | + else |
|
| 176 | + { |
|
| 177 | + return false; |
|
| 178 | + } |
|
| 179 | + } |
|
| 180 | 180 | |
| 181 | - /** Remove all whitespaces (when not quoted) |
|
| 182 | - * @param string $rule |
|
| 183 | - * @throws Exception |
|
| 184 | - * @return string |
|
| 185 | - */ |
|
| 186 | - public function eval_cleanup($rule) |
|
| 187 | - { |
|
| 188 | - $item=0; |
|
| 189 | - $rule2=''; |
|
| 190 | - while ($item < strlen($rule)) |
|
| 191 | - { |
|
| 192 | - if ($rule[$item]==' ') { $item++; continue; } |
|
| 193 | - if ($rule[$item]=='"') |
|
| 194 | - { |
|
| 195 | - $rule2.=$rule[$item]; |
|
| 196 | - $item++; |
|
| 197 | - while (($item < strlen($rule)) && ($rule[$item]!='"') ) |
|
| 198 | - { |
|
| 199 | - $rule2.=$rule[$item]; |
|
| 200 | - $item++; |
|
| 201 | - } |
|
| 202 | - if ($item == strlen ($rule)) throw new Exception("closing '\"' not found in ".$rule ." at " .$item); |
|
| 203 | - $rule2.=$rule[$item]; |
|
| 204 | - $item++; |
|
| 205 | - continue; |
|
| 206 | - } |
|
| 181 | + /** Remove all whitespaces (when not quoted) |
|
| 182 | + * @param string $rule |
|
| 183 | + * @throws Exception |
|
| 184 | + * @return string |
|
| 185 | + */ |
|
| 186 | + public function eval_cleanup($rule) |
|
| 187 | + { |
|
| 188 | + $item=0; |
|
| 189 | + $rule2=''; |
|
| 190 | + while ($item < strlen($rule)) |
|
| 191 | + { |
|
| 192 | + if ($rule[$item]==' ') { $item++; continue; } |
|
| 193 | + if ($rule[$item]=='"') |
|
| 194 | + { |
|
| 195 | + $rule2.=$rule[$item]; |
|
| 196 | + $item++; |
|
| 197 | + while (($item < strlen($rule)) && ($rule[$item]!='"') ) |
|
| 198 | + { |
|
| 199 | + $rule2.=$rule[$item]; |
|
| 200 | + $item++; |
|
| 201 | + } |
|
| 202 | + if ($item == strlen ($rule)) throw new Exception("closing '\"' not found in ".$rule ." at " .$item); |
|
| 203 | + $rule2.=$rule[$item]; |
|
| 204 | + $item++; |
|
| 205 | + continue; |
|
| 206 | + } |
|
| 207 | 207 | |
| 208 | - $rule2.=$rule[$item]; |
|
| 209 | - $item++; |
|
| 210 | - } |
|
| 208 | + $rule2.=$rule[$item]; |
|
| 209 | + $item++; |
|
| 210 | + } |
|
| 211 | 211 | |
| 212 | - return $rule2; |
|
| 213 | - } |
|
| 212 | + return $rule2; |
|
| 213 | + } |
|
| 214 | 214 | |
| 215 | 215 | } |
| 216 | 216 | \ No newline at end of file |
@@ -6,233 +6,233 @@ |
||
| 6 | 6 | |
| 7 | 7 | class Rule |
| 8 | 8 | { |
| 9 | - use \RuleUtils; |
|
| 9 | + use \RuleUtils; |
|
| 10 | 10 | |
| 11 | - /** @var Logging $logging logging class*/ |
|
| 12 | - protected $logging; |
|
| 11 | + /** @var Logging $logging logging class*/ |
|
| 12 | + protected $logging; |
|
| 13 | 13 | |
| 14 | - /** @var Trap $trapClass */ |
|
| 15 | - protected $trapClass; |
|
| 14 | + /** @var Trap $trapClass */ |
|
| 15 | + protected $trapClass; |
|
| 16 | 16 | |
| 17 | 17 | |
| 18 | - /** |
|
| 19 | - * Setup Rule Class |
|
| 20 | - * @param Trap $trapClass : To get logging class & plugin class |
|
| 21 | - */ |
|
| 22 | - function __construct($trapClass) |
|
| 23 | - { |
|
| 24 | - $this->trapClass=$trapClass; |
|
| 25 | - $this->logging=$trapClass->logging; |
|
| 26 | - } |
|
| 18 | + /** |
|
| 19 | + * Setup Rule Class |
|
| 20 | + * @param Trap $trapClass : To get logging class & plugin class |
|
| 21 | + */ |
|
| 22 | + function __construct($trapClass) |
|
| 23 | + { |
|
| 24 | + $this->trapClass=$trapClass; |
|
| 25 | + $this->logging=$trapClass->logging; |
|
| 26 | + } |
|
| 27 | 27 | |
| 28 | 28 | |
| 29 | - protected function eval_getElement($rule,&$item) |
|
| 30 | - { |
|
| 31 | - if ($item >= strlen($rule)) |
|
| 32 | - { |
|
| 33 | - throw new Exception("Early end of string ".$rule ." at " .$item ); |
|
| 34 | - } |
|
| 35 | - while ($rule[$item]==' ') $item++; |
|
| 36 | - if (preg_match('/[\-0-9\.]/',$rule[$item])) |
|
| 37 | - { // number |
|
| 38 | - return $this->get_number($rule, $item); |
|
| 39 | - } |
|
| 40 | - if ($rule[$item] == '"') |
|
| 41 | - { // string |
|
| 42 | - return $this->get_string($rule, $item); |
|
| 43 | - } |
|
| 29 | + protected function eval_getElement($rule,&$item) |
|
| 30 | + { |
|
| 31 | + if ($item >= strlen($rule)) |
|
| 32 | + { |
|
| 33 | + throw new Exception("Early end of string ".$rule ." at " .$item ); |
|
| 34 | + } |
|
| 35 | + while ($rule[$item]==' ') $item++; |
|
| 36 | + if (preg_match('/[\-0-9\.]/',$rule[$item])) |
|
| 37 | + { // number |
|
| 38 | + return $this->get_number($rule, $item); |
|
| 39 | + } |
|
| 40 | + if ($rule[$item] == '"') |
|
| 41 | + { // string |
|
| 42 | + return $this->get_string($rule, $item); |
|
| 43 | + } |
|
| 44 | 44 | |
| 45 | - if ($rule[$item] == '(') |
|
| 46 | - { // grouping |
|
| 47 | - return $this->get_group($rule, $item); |
|
| 48 | - } |
|
| 49 | - if ($rule[$item] == '_') |
|
| 50 | - { // function |
|
| 51 | - return $this->get_function($rule, $item); |
|
| 52 | - } |
|
| 53 | - throw new Exception("number/string not found in ".$rule ." at " .$item . ' : ' .$rule[$item]); |
|
| 45 | + if ($rule[$item] == '(') |
|
| 46 | + { // grouping |
|
| 47 | + return $this->get_group($rule, $item); |
|
| 48 | + } |
|
| 49 | + if ($rule[$item] == '_') |
|
| 50 | + { // function |
|
| 51 | + return $this->get_function($rule, $item); |
|
| 52 | + } |
|
| 53 | + throw new Exception("number/string not found in ".$rule ." at " .$item . ' : ' .$rule[$item]); |
|
| 54 | 54 | |
| 55 | - } |
|
| 55 | + } |
|
| 56 | 56 | |
| 57 | - protected function eval_getOper($rule,&$item) |
|
| 58 | - { |
|
| 59 | - while ($rule[$item]==' ') $item++; |
|
| 60 | - switch ($rule[$item]) |
|
| 61 | - { |
|
| 62 | - case '<': |
|
| 63 | - if ($rule[$item+1]=='=') { $item+=2; return array(0,"<=");} |
|
| 64 | - $item++; return array(0,"<"); |
|
| 65 | - case '>': |
|
| 66 | - if ($rule[$item+1]=='=') { $item+=2; return array(0,">=");} |
|
| 67 | - $item++; return array(0,">"); |
|
| 68 | - case '=': |
|
| 69 | - $item++; return array(0,"="); |
|
| 70 | - case '!': |
|
| 71 | - if ($rule[$item+1]=='=') { $item+=2; return array(0,"!=");} |
|
| 72 | - throw new Exception("Erreur in expr - incorrect operator '!' found in ".$rule ." at " .$item); |
|
| 73 | - case '~': |
|
| 74 | - $item++; return array(0,"~"); |
|
| 75 | - case '|': |
|
| 76 | - $item++; return array(1,"|"); |
|
| 77 | - case '&': |
|
| 78 | - $item++; return array(1,"&"); |
|
| 79 | - default : |
|
| 80 | - throw new Exception("Erreur in expr - operator not found in ".$rule ." at " .$item); |
|
| 81 | - } |
|
| 82 | - } |
|
| 57 | + protected function eval_getOper($rule,&$item) |
|
| 58 | + { |
|
| 59 | + while ($rule[$item]==' ') $item++; |
|
| 60 | + switch ($rule[$item]) |
|
| 61 | + { |
|
| 62 | + case '<': |
|
| 63 | + if ($rule[$item+1]=='=') { $item+=2; return array(0,"<=");} |
|
| 64 | + $item++; return array(0,"<"); |
|
| 65 | + case '>': |
|
| 66 | + if ($rule[$item+1]=='=') { $item+=2; return array(0,">=");} |
|
| 67 | + $item++; return array(0,">"); |
|
| 68 | + case '=': |
|
| 69 | + $item++; return array(0,"="); |
|
| 70 | + case '!': |
|
| 71 | + if ($rule[$item+1]=='=') { $item+=2; return array(0,"!=");} |
|
| 72 | + throw new Exception("Erreur in expr - incorrect operator '!' found in ".$rule ." at " .$item); |
|
| 73 | + case '~': |
|
| 74 | + $item++; return array(0,"~"); |
|
| 75 | + case '|': |
|
| 76 | + $item++; return array(1,"|"); |
|
| 77 | + case '&': |
|
| 78 | + $item++; return array(1,"&"); |
|
| 79 | + default : |
|
| 80 | + throw new Exception("Erreur in expr - operator not found in ".$rule ." at " .$item); |
|
| 81 | + } |
|
| 82 | + } |
|
| 83 | 83 | |
| 84 | - private function do_compare($val1,$val2,$comp,$negate) |
|
| 85 | - { |
|
| 86 | - switch ($comp){ |
|
| 87 | - case '<': $retVal= ($val1 < $val2); break; |
|
| 88 | - case '<=': $retVal= ($val1 <= $val2); break; |
|
| 89 | - case '>': $retVal= ($val1 > $val2); break; |
|
| 90 | - case '>=': $retVal= ($val1 >= $val2); break; |
|
| 91 | - case '=': $retVal= ($val1 == $val2); break; |
|
| 92 | - case '!=': $retVal= ($val1 != $val2); break; |
|
| 93 | - case '~': $retVal= (preg_match('/'.preg_replace('/"/','',$val2).'/',$val1)); break; |
|
| 94 | - case '|': $retVal= ($val1 || $val2); break; |
|
| 95 | - case '&': $retVal= ($val1 && $val2); break; |
|
| 96 | - default: throw new Exception("Error in expression - unknown comp : ".$comp); |
|
| 97 | - } |
|
| 98 | - if ($negate === true) $retVal = ! $retVal; // Inverse result if negate before expression |
|
| 84 | + private function do_compare($val1,$val2,$comp,$negate) |
|
| 85 | + { |
|
| 86 | + switch ($comp){ |
|
| 87 | + case '<': $retVal= ($val1 < $val2); break; |
|
| 88 | + case '<=': $retVal= ($val1 <= $val2); break; |
|
| 89 | + case '>': $retVal= ($val1 > $val2); break; |
|
| 90 | + case '>=': $retVal= ($val1 >= $val2); break; |
|
| 91 | + case '=': $retVal= ($val1 == $val2); break; |
|
| 92 | + case '!=': $retVal= ($val1 != $val2); break; |
|
| 93 | + case '~': $retVal= (preg_match('/'.preg_replace('/"/','',$val2).'/',$val1)); break; |
|
| 94 | + case '|': $retVal= ($val1 || $val2); break; |
|
| 95 | + case '&': $retVal= ($val1 && $val2); break; |
|
| 96 | + default: throw new Exception("Error in expression - unknown comp : ".$comp); |
|
| 97 | + } |
|
| 98 | + if ($negate === true) $retVal = ! $retVal; // Inverse result if negate before expression |
|
| 99 | 99 | |
| 100 | - return $retVal; |
|
| 101 | - } |
|
| 100 | + return $retVal; |
|
| 101 | + } |
|
| 102 | 102 | |
| 103 | - /** Evaluation : makes token and evaluate. |
|
| 104 | - * Public function for expressions testing |
|
| 105 | - * accepts : < > = <= >= != (typec = 0) |
|
| 106 | - * operators : & | (typec=1) |
|
| 107 | - * with : integers/float (type 0) or strings "" (type 1) or results (type 2) |
|
| 108 | - * comparison int vs strings will return null (error) |
|
| 109 | - * return : bool or null on error |
|
| 110 | - */ |
|
| 111 | - public function evaluation($rule,&$item) |
|
| 112 | - { |
|
| 113 | - //echo "Evaluation of ".substr($rule,$item)."\n"; |
|
| 114 | - $negate=$this->check_negate_first($rule, $item); |
|
| 115 | - // First element : number, string or () |
|
| 116 | - list($type1,$val1) = $this->eval_getElement($rule,$item); |
|
| 117 | - //echo "Elmt1: ".$val1."/".$type1." : ".substr($rule,$item)."\n"; |
|
| 103 | + /** Evaluation : makes token and evaluate. |
|
| 104 | + * Public function for expressions testing |
|
| 105 | + * accepts : < > = <= >= != (typec = 0) |
|
| 106 | + * operators : & | (typec=1) |
|
| 107 | + * with : integers/float (type 0) or strings "" (type 1) or results (type 2) |
|
| 108 | + * comparison int vs strings will return null (error) |
|
| 109 | + * return : bool or null on error |
|
| 110 | + */ |
|
| 111 | + public function evaluation($rule,&$item) |
|
| 112 | + { |
|
| 113 | + //echo "Evaluation of ".substr($rule,$item)."\n"; |
|
| 114 | + $negate=$this->check_negate_first($rule, $item); |
|
| 115 | + // First element : number, string or () |
|
| 116 | + list($type1,$val1) = $this->eval_getElement($rule,$item); |
|
| 117 | + //echo "Elmt1: ".$val1."/".$type1." : ".substr($rule,$item)."\n"; |
|
| 118 | 118 | |
| 119 | - if ($item==strlen($rule)) // If only element, return value, but only boolean |
|
| 120 | - { |
|
| 121 | - if ($type1 != 2) throw new Exception("Cannot use num/string as boolean : ".$rule); |
|
| 122 | - if ($negate === true) $val1= ! $val1; |
|
| 123 | - return $val1; |
|
| 124 | - } |
|
| 119 | + if ($item==strlen($rule)) // If only element, return value, but only boolean |
|
| 120 | + { |
|
| 121 | + if ($type1 != 2) throw new Exception("Cannot use num/string as boolean : ".$rule); |
|
| 122 | + if ($negate === true) $val1= ! $val1; |
|
| 123 | + return $val1; |
|
| 124 | + } |
|
| 125 | 125 | |
| 126 | - // Second element : operator |
|
| 127 | - list($typec,$comp) = $this->eval_getOper($rule,$item); |
|
| 128 | - //echo "Comp : ".$comp." : ".substr($rule,$item)."\n"; |
|
| 126 | + // Second element : operator |
|
| 127 | + list($typec,$comp) = $this->eval_getOper($rule,$item); |
|
| 128 | + //echo "Comp : ".$comp." : ".substr($rule,$item)."\n"; |
|
| 129 | 129 | |
| 130 | - // Third element : number, string or () |
|
| 131 | - if ( $rule[$item] == '!') // starts with a ! so evaluate whats next |
|
| 132 | - { |
|
| 133 | - $item++; |
|
| 134 | - if ($typec != 1) throw new Exception("Mixing boolean and comparison : ".$rule); |
|
| 135 | - $val2= ! $this->evaluation($rule,$item); |
|
| 136 | - $type2=2; // result is a boolean |
|
| 137 | - } |
|
| 138 | - else |
|
| 139 | - { |
|
| 140 | - list($type2,$val2) = $this->eval_getElement($rule,$item); |
|
| 141 | - } |
|
| 142 | - //echo "Elmt2: ".$val2."/".$type2." : ".substr($rule,$item)."\n"; |
|
| 130 | + // Third element : number, string or () |
|
| 131 | + if ( $rule[$item] == '!') // starts with a ! so evaluate whats next |
|
| 132 | + { |
|
| 133 | + $item++; |
|
| 134 | + if ($typec != 1) throw new Exception("Mixing boolean and comparison : ".$rule); |
|
| 135 | + $val2= ! $this->evaluation($rule,$item); |
|
| 136 | + $type2=2; // result is a boolean |
|
| 137 | + } |
|
| 138 | + else |
|
| 139 | + { |
|
| 140 | + list($type2,$val2) = $this->eval_getElement($rule,$item); |
|
| 141 | + } |
|
| 142 | + //echo "Elmt2: ".$val2."/".$type2." : ".substr($rule,$item)."\n"; |
|
| 143 | 143 | |
| 144 | - if ($type1!=$type2) // cannot compare different types |
|
| 145 | - { |
|
| 146 | - throw new Exception("Cannot compare string & number : ".$rule); |
|
| 147 | - } |
|
| 148 | - if ($typec==1 && $type1 !=2) // cannot use & or | with string/number |
|
| 149 | - { |
|
| 150 | - throw new Exception("Cannot use boolean operators with string & number : ".$rule); |
|
| 151 | - } |
|
| 144 | + if ($type1!=$type2) // cannot compare different types |
|
| 145 | + { |
|
| 146 | + throw new Exception("Cannot compare string & number : ".$rule); |
|
| 147 | + } |
|
| 148 | + if ($typec==1 && $type1 !=2) // cannot use & or | with string/number |
|
| 149 | + { |
|
| 150 | + throw new Exception("Cannot use boolean operators with string & number : ".$rule); |
|
| 151 | + } |
|
| 152 | 152 | |
| 153 | - $retVal = $this->do_compare($val1, $val2, $comp, $negate); |
|
| 153 | + $retVal = $this->do_compare($val1, $val2, $comp, $negate); |
|
| 154 | 154 | |
| 155 | - if ($item==strlen($rule)) return $retVal; // End of string : return evaluation |
|
| 156 | - // check for logical operator : |
|
| 157 | - switch ($rule[$item]) |
|
| 158 | - { |
|
| 159 | - case '|': $item++; return ($retVal || $this->evaluation($rule,$item) ); |
|
| 160 | - case '&': $item++; return ($retVal && $this->evaluation($rule,$item) ); |
|
| 155 | + if ($item==strlen($rule)) return $retVal; // End of string : return evaluation |
|
| 156 | + // check for logical operator : |
|
| 157 | + switch ($rule[$item]) |
|
| 158 | + { |
|
| 159 | + case '|': $item++; return ($retVal || $this->evaluation($rule,$item) ); |
|
| 160 | + case '&': $item++; return ($retVal && $this->evaluation($rule,$item) ); |
|
| 161 | 161 | |
| 162 | - default: throw new Exception("Erreur in expr - garbadge at end of expression : ".$rule[$item]); |
|
| 163 | - } |
|
| 164 | - } |
|
| 162 | + default: throw new Exception("Erreur in expr - garbadge at end of expression : ".$rule[$item]); |
|
| 163 | + } |
|
| 164 | + } |
|
| 165 | 165 | |
| 166 | - /** |
|
| 167 | - * Get '*' or '**' and transform in [0-9]+ or .* in return string |
|
| 168 | - * @param string $oid OID in normal or regexp format. '*' will be escaped ('\*') |
|
| 169 | - * @return string correct regexp format |
|
| 170 | - */ |
|
| 171 | - public function regexp_eval(string &$oid) |
|
| 172 | - { |
|
| 173 | - // ** replaced by .* |
|
| 174 | - $oidR=preg_replace('/\*\*/', '.*', $oid); |
|
| 175 | - // * replaced by [0-9]+ |
|
| 176 | - $oidR=preg_replace('/\*/', '[0-9]+', $oidR); |
|
| 166 | + /** |
|
| 167 | + * Get '*' or '**' and transform in [0-9]+ or .* in return string |
|
| 168 | + * @param string $oid OID in normal or regexp format. '*' will be escaped ('\*') |
|
| 169 | + * @return string correct regexp format |
|
| 170 | + */ |
|
| 171 | + public function regexp_eval(string &$oid) |
|
| 172 | + { |
|
| 173 | + // ** replaced by .* |
|
| 174 | + $oidR=preg_replace('/\*\*/', '.*', $oid); |
|
| 175 | + // * replaced by [0-9]+ |
|
| 176 | + $oidR=preg_replace('/\*/', '[0-9]+', $oidR); |
|
| 177 | 177 | |
| 178 | - // replace * with \* in oid for preg_replace |
|
| 179 | - $oid=preg_replace('/\*/', '\*', $oid); |
|
| 178 | + // replace * with \* in oid for preg_replace |
|
| 179 | + $oid=preg_replace('/\*/', '\*', $oid); |
|
| 180 | 180 | |
| 181 | - $this->logging->log('Regexp eval : '.$oid.' / '.$oidR,DEBUG ); |
|
| 181 | + $this->logging->log('Regexp eval : '.$oid.' / '.$oidR,DEBUG ); |
|
| 182 | 182 | |
| 183 | - return $oidR; |
|
| 184 | - } |
|
| 183 | + return $oidR; |
|
| 184 | + } |
|
| 185 | 185 | |
| 186 | 186 | |
| 187 | - /** Evaluation rule (uses eval_* functions recursively) |
|
| 188 | - * @param string $rule : rule ( _OID(.1.3.6.1.4.1.8072.2.3.2.1)=_OID(.1.3.6.1.2.1.1.3.0) ) |
|
| 189 | - * @param array $oidList : OIDs values to sustitute. |
|
| 190 | - * @return bool : true : rule match, false : rule don't match , throw exception on error. |
|
| 191 | - */ |
|
| 192 | - public function eval_rule($rule,$oidList) |
|
| 193 | - { |
|
| 194 | - if ($rule==null || $rule == '') // Empty rule is always true |
|
| 195 | - { |
|
| 196 | - return true; |
|
| 197 | - } |
|
| 198 | - $matches=array(); |
|
| 199 | - while (preg_match('/_OID\(([0-9\.\*]+)\)/',$rule,$matches) == 1) |
|
| 200 | - { |
|
| 201 | - $oid=$matches[1]; |
|
| 202 | - $found=0; |
|
| 203 | - // Test and transform regexp |
|
| 204 | - $oidR = $this->regexp_eval($oid); |
|
| 187 | + /** Evaluation rule (uses eval_* functions recursively) |
|
| 188 | + * @param string $rule : rule ( _OID(.1.3.6.1.4.1.8072.2.3.2.1)=_OID(.1.3.6.1.2.1.1.3.0) ) |
|
| 189 | + * @param array $oidList : OIDs values to sustitute. |
|
| 190 | + * @return bool : true : rule match, false : rule don't match , throw exception on error. |
|
| 191 | + */ |
|
| 192 | + public function eval_rule($rule,$oidList) |
|
| 193 | + { |
|
| 194 | + if ($rule==null || $rule == '') // Empty rule is always true |
|
| 195 | + { |
|
| 196 | + return true; |
|
| 197 | + } |
|
| 198 | + $matches=array(); |
|
| 199 | + while (preg_match('/_OID\(([0-9\.\*]+)\)/',$rule,$matches) == 1) |
|
| 200 | + { |
|
| 201 | + $oid=$matches[1]; |
|
| 202 | + $found=0; |
|
| 203 | + // Test and transform regexp |
|
| 204 | + $oidR = $this->regexp_eval($oid); |
|
| 205 | 205 | |
| 206 | - foreach($oidList as $val) |
|
| 207 | - { |
|
| 208 | - if (preg_match("/^$oidR$/",$val->oid) == 1) |
|
| 209 | - { |
|
| 210 | - if (!preg_match('/^-?[0-9]*\.?[0-9]+$/',$val->value)) |
|
| 211 | - { // If not a number, change " to ' and put " around it |
|
| 212 | - $val->value=preg_replace('/"/',"'",$val->value); |
|
| 213 | - $val->value='"'.$val->value.'"'; |
|
| 214 | - } |
|
| 215 | - $rep=0; |
|
| 216 | - $rule=preg_replace('/_OID\('.$oid.'\)/',$val->value,$rule,-1,$rep); |
|
| 217 | - if ($rep==0) |
|
| 218 | - { |
|
| 219 | - $this->logging->log("Error in rule_eval",WARN,''); |
|
| 220 | - return false; |
|
| 221 | - } |
|
| 222 | - $found=1; |
|
| 223 | - break; |
|
| 224 | - } |
|
| 225 | - } |
|
| 226 | - if ($found==0) |
|
| 227 | - { // OID not found : throw error |
|
| 228 | - throw new Exception('OID '.$oid.' not found in trap'); |
|
| 229 | - } |
|
| 230 | - } |
|
| 231 | - $item=0; |
|
| 232 | - $rule=$this->eval_cleanup($rule); |
|
| 233 | - $this->logging->log('Rule after clenup: '.$rule,INFO ); |
|
| 206 | + foreach($oidList as $val) |
|
| 207 | + { |
|
| 208 | + if (preg_match("/^$oidR$/",$val->oid) == 1) |
|
| 209 | + { |
|
| 210 | + if (!preg_match('/^-?[0-9]*\.?[0-9]+$/',$val->value)) |
|
| 211 | + { // If not a number, change " to ' and put " around it |
|
| 212 | + $val->value=preg_replace('/"/',"'",$val->value); |
|
| 213 | + $val->value='"'.$val->value.'"'; |
|
| 214 | + } |
|
| 215 | + $rep=0; |
|
| 216 | + $rule=preg_replace('/_OID\('.$oid.'\)/',$val->value,$rule,-1,$rep); |
|
| 217 | + if ($rep==0) |
|
| 218 | + { |
|
| 219 | + $this->logging->log("Error in rule_eval",WARN,''); |
|
| 220 | + return false; |
|
| 221 | + } |
|
| 222 | + $found=1; |
|
| 223 | + break; |
|
| 224 | + } |
|
| 225 | + } |
|
| 226 | + if ($found==0) |
|
| 227 | + { // OID not found : throw error |
|
| 228 | + throw new Exception('OID '.$oid.' not found in trap'); |
|
| 229 | + } |
|
| 230 | + } |
|
| 231 | + $item=0; |
|
| 232 | + $rule=$this->eval_cleanup($rule); |
|
| 233 | + $this->logging->log('Rule after clenup: '.$rule,INFO ); |
|
| 234 | 234 | |
| 235 | - return $this->evaluation($rule,$item); |
|
| 236 | - } |
|
| 235 | + return $this->evaluation($rule,$item); |
|
| 236 | + } |
|
| 237 | 237 | |
| 238 | 238 | } |
| 239 | 239 | \ No newline at end of file |
