mirror of https://github.com/google/oss-fuzz.git
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
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// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package unicode
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import (
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fuzz "github.com/AdaLogics/go-fuzz-headers"
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"golang.org/x/text/encoding/charmap"
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)
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var (
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utf16LEIB = UTF16(LittleEndian, IgnoreBOM) // UTF-16LE (atypical interpretation)
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utf16LEUB = UTF16(LittleEndian, UseBOM) // UTF-16, LE
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utf16LEEB = UTF16(LittleEndian, ExpectBOM) // UTF-16, LE, Expect
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utf16BEIB = UTF16(BigEndian, IgnoreBOM) // UTF-16BE (atypical interpretation)
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utf16BEUB = UTF16(BigEndian, UseBOM) // UTF-16 default
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utf16BEEB = UTF16(BigEndian, ExpectBOM) // UTF-16 Expect
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)
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func FuzzUnicodeTransform(data []byte) int {
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f := fuzz.NewConsumer(data)
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sizeDest, err := f.GetInt()
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if err != nil {
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return 0
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}
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b, err := f.GetBytes()
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if err != nil {
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return 0
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}
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b2 := make([]byte, sizeDest)
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decoderType, err := f.GetInt()
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if err != nil {
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return 0
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}
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boo, err := f.GetBool()
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if err != nil {
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return 0
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}
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switch decoderType % 10 {
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case 0:
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utf16LEIB.NewDecoder().Transform(b2, b, boo)
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case 1:
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utf16LEUB.NewDecoder().Transform(b2, b, boo)
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case 2:
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utf16LEEB.NewDecoder().Transform(b2, b, boo)
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case 3:
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utf16BEIB.NewDecoder().Transform(b2, b, boo)
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case 4:
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utf16BEUB.NewDecoder().Transform(b2, b, boo)
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case 5:
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utf16BEEB.NewDecoder().Transform(b2, b, boo)
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case 6:
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UTF8.NewDecoder().Transform(b2, b, boo)
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case 7:
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UTF8BOM.NewDecoder().Transform(b2, b, boo)
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case 8:
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tr := UTF8BOM.NewEncoder()
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tr.Reset()
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tr.Transform(b2, b, boo)
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case 9:
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tr := BOMOverride(charmap.CodePage437.NewDecoder())
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tr.Reset()
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tr.Transform(b2, b, boo)
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}
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return 1
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}
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