vitess.io/vitess@v0.16.2/go/vt/vtgate/planbuilder/fuzz.go (about) 1 //go:build gofuzz 2 // +build gofuzz 3 4 /* 5 Copyright 2021 The Vitess Authors. 6 Licensed under the Apache License, Version 2.0 (the "License"); 7 you may not use this file except in compliance with the License. 8 You may obtain a copy of the License at 9 http://www.apache.org/licenses/LICENSE-2.0 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package planbuilder 18 19 import ( 20 "sync" 21 "testing" 22 23 "vitess.io/vitess/go/json2" 24 "vitess.io/vitess/go/sqltypes" 25 vschemapb "vitess.io/vitess/go/vt/proto/vschema" 26 "vitess.io/vitess/go/vt/vtgate/vindexes" 27 28 fuzz "github.com/AdaLogics/go-fuzz-headers" 29 ) 30 31 var initter sync.Once 32 33 func onceInit() { 34 testing.Init() 35 } 36 37 // loadSchemaForFuzzing is a helper to load *vindexes.VSchema 38 // for fuzzing. 39 func loadSchemaForFuzzing(f *fuzz.ConsumeFuzzer) (*vindexes.VSchema, error) { 40 //formal, err := vindexes.LoadFormal(filename) 41 formal, err := loadFormalForFuzzing(f) 42 if err != nil { 43 return nil, err 44 } 45 vschema := vindexes.BuildVSchema(formal) 46 if err != nil { 47 return nil, err 48 } 49 for _, ks := range vschema.Keyspaces { 50 if ks.Error != nil { 51 return nil, err 52 } 53 54 for _, table := range ks.Tables { 55 for i, col := range table.Columns { 56 if sqltypes.IsText(col.Type) { 57 table.Columns[i].CollationName = "latin1_swedish_ci" 58 } 59 } 60 } 61 } 62 return vschema, nil 63 } 64 65 // loadFormalForFuzzing is a helper to create *vschemapb.SrvVSchema 66 func loadFormalForFuzzing(f *fuzz.ConsumeFuzzer) (*vschemapb.SrvVSchema, error) { 67 formal := &vschemapb.SrvVSchema{} 68 data, err := f.GetBytes() 69 if err != nil { 70 return nil, err 71 } 72 err = json2.Unmarshal(data, formal) 73 if err != nil { 74 return nil, err 75 } 76 return formal, nil 77 } 78 79 // FuzzTestBuilder implements the fuzzer 80 func FuzzTestBuilder(data []byte) int { 81 initter.Do(onceInit) 82 f := fuzz.NewConsumer(data) 83 query, err := f.GetSQLString() 84 if err != nil { 85 return 0 86 } 87 keyspace, err := f.GetString() 88 if err != nil { 89 return 0 90 } 91 s, err := loadSchemaForFuzzing(f) 92 if err != nil { 93 return 0 94 } 95 vschemaWrapper := &vschemaWrapper{ 96 v: s, 97 sysVarEnabled: true, 98 } 99 100 _, err = TestBuilder(query, vschemaWrapper, keyspace) 101 if err != nil { 102 return 0 103 } 104 return 1 105 }