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golang: refactor encoding fuzzer (#8841) 

Signed-off-by: AdamKorcz <adam@adalogics.com>

Signed-off-by: AdamKorcz <adam@adalogics.com>
This commit is contained in:
AdamKorcz 2022-10-24 14:00:27 +01:00 committed by GitHub
parent 3b00bffdb7
commit ec9caad55e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 18 deletions
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31
projects/golang/encoding_fuzzer.go
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@ -7,7 +7,6 @@ import (
"encoding/gob"
"encoding/json"
"encoding/xml"
"runtime"
fuzz "github.com/AdaLogics/go-fuzz-headers"
)
@ -21,16 +20,7 @@ func FuzzEncoding(data []byte) int {
if err != nil {
return 0
}
b2, err := f.GetBytes()
if err != nil {
return 0
}
defer func() {
if r := recover(); r != nil {
}
runtime.GC()
}()
switch decType%5 {
switch decType % 5 {
case 0:
e, err := f.GetString()
if err != nil || len(e) != 32 {
@ -38,8 +28,8 @@ func FuzzEncoding(data []byte) int {
}
enc := base32.NewEncoding(e)
d := base32.NewDecoder(enc, bytes.NewReader(b1))
_, _ = d.Read(b2)
return 1
dbuf := make([]byte, enc.DecodedLen(len(e)))
_, _ = d.Read(dbuf)
case 1:
e, err := f.GetString()
if err != nil || len(e) != 64 {
@ -52,20 +42,25 @@ func FuzzEncoding(data []byte) int {
}
enc := base64.NewEncoding(e)
d := base64.NewDecoder(enc, bytes.NewReader(b1))
_, _ = d.Read(b2)
return 1
dbuf := make([]byte, enc.DecodedLen(len(e)))
_, _ = d.Read(dbuf)
case 2:
b2, err := f.GetBytes()
if err != nil {
return 0
}
d := gob.NewDecoder(bytes.NewReader(b1))
_ = d.Decode(b2)
return 1
case 3:
b2, err := f.GetBytes()
if err != nil {
return 0
}
d := json.NewDecoder(bytes.NewReader(b1))
_ = d.Decode(b2)
return 1
case 4:
d := xml.NewDecoder(bytes.NewReader(b1))
_, _ = d.Token()
return 1
}
return 1
}