/
rx.go
49 lines (43 loc) · 1.13 KB
/
rx.go
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// Copyright 2022 Juan Pablo Tosso
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package operators
import (
"regexp"
"github.com/jptosso/coraza-waf/v2"
)
type rx struct {
re *regexp.Regexp
}
func (o *rx) Init(data string) error {
re, err := regexp.Compile(data)
o.re = re
return err
}
func (o *rx) Evaluate(tx *coraza.Transaction, value string) bool {
match := o.re.FindAllString(value, -1)
lcount := len(match)
if !tx.Capture && lcount > 0 {
return true
}
if lcount > 0 && tx.Capture {
tx.CaptureField(0, value)
}
for i, m := range match {
if i == 9 {
return true
}
tx.CaptureField(i+1, m)
}
return lcount > 0
}