/
pilot_security_fuzzer.go
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/
pilot_security_fuzzer.go
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// Copyright Istio Authors
//
// 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 fuzz
import (
"fmt"
fuzz "github.com/AdaLogics/go-fuzz-headers"
"istio.io/istio/pilot/pkg/networking/util"
"istio.io/istio/pilot/pkg/security/authz/matcher"
)
func FuzzCidrRange(data []byte) int {
_, _ = util.AddrStrToCidrRange(string(data))
return 1
}
func FuzzHeaderMatcher(data []byte) int {
k, v, err := getKandV(data)
if err != nil {
return 0
}
_ = matcher.HeaderMatcher(k, v)
return 1
}
func FuzzHostMatcherWithRegex(data []byte) int {
k, v, err := getKandV(data)
if err != nil {
return 0
}
_ = matcher.HostMatcherWithRegex(k, v)
return 1
}
func FuzzHostMatcher(data []byte) int {
k, v, err := getKandV(data)
if err != nil {
return 0
}
_ = matcher.HostMatcher(k, v)
return 1
}
func FuzzMetadataListMatcher(data []byte) int {
f := fuzz.NewConsumer(data)
filter, err := f.GetString()
if err != nil {
return 0
}
number, err := f.GetInt()
if err != nil {
return 0
}
maxKeys := number % 100
keys := make([]string, 0, maxKeys)
for i := 0; i < maxKeys; i++ {
key, err := f.GetString()
if err != nil {
return 0
}
keys = append(keys, key)
}
value, err := f.GetString()
if err != nil {
return 0
}
_ = matcher.MetadataListMatcher(filter, keys, matcher.StringMatcher(value), false)
return 1
}
func getKandV(data []byte) (string, string, error) {
if len(data) < 10 {
return "", "", fmt.Errorf("not enough bytes")
}
if len(data)%2 != 0 {
return "", "", fmt.Errorf("not correct amount of bytes")
}
k := string(data[:len(data)/2])
v := string(data[(len(data)/2)+1:])
return k, v, nil
}