| // 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. |
| |
| // nolint: revive |
| package fuzz |
| |
| import ( |
| "bytes" |
| "errors" |
| ) |
| |
| import ( |
| fuzz "github.com/AdaLogics/go-fuzz-headers" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/istioctl/pkg/writer/compare" |
| ) |
| |
| func createIstiodDumps(f *fuzz.ConsumeFuzzer) (map[string][]byte, error) { |
| m := make(map[string][]byte) |
| maxNoEntries := 50 |
| qty, err := f.GetInt() |
| if err != nil { |
| return m, err |
| } |
| noOfEntries := qty % maxNoEntries |
| if noOfEntries == 0 { |
| return m, errors.New("a map of zero-length was created") |
| } |
| for i := 0; i < noOfEntries; i++ { |
| k, err := f.GetString() |
| if err != nil { |
| return m, err |
| } |
| v, err := f.GetBytes() |
| if err != nil { |
| return m, err |
| } |
| m[k] = v |
| } |
| return m, nil |
| } |
| |
| func FuzzCompareDiff(data []byte) int { |
| f := fuzz.NewConsumer(data) |
| istiodDumps, err := createIstiodDumps(f) |
| if err != nil { |
| return 0 |
| } |
| envoyDump, err := f.GetBytes() |
| if err != nil { |
| return 0 |
| } |
| var buf bytes.Buffer |
| c, err := compare.NewComparator(&buf, istiodDumps, envoyDump) |
| if err != nil { |
| return 0 |
| } |
| _ = c.Diff() |
| return 1 |
| } |