polydawn · Kubuxu · Apr 6, 2018 · Apr 6, 2018 · Apr 6, 2018
diff --git a/cbor/.gitignore b/cbor/.gitignore
@@ -0,0 +1 @@
+cbor-fuzz.zip
diff --git a/cbor/cborDecoderTerminals.go b/cbor/cborDecoderTerminals.go
@@ -2,10 +2,16 @@ package cbor
 
 import (
 	"encoding/binary"
+	"errors"
 	"fmt"
 	"math"
 )
 
+const (
+	maxUint = ^uint(0)
+	maxInt  = int(maxUint >> 1)
+)
+
 func (d *Decoder) decodeFloat(majorByte byte) (f float64, err error) {
 	var bs []byte
 	switch majorByte {
@@ -66,8 +72,12 @@ func (d *Decoder) decodeNegInt(majorByte byte) (i int64, err error) {
 	if err != nil {
 		return 0, err
 	}
-	// TODO needs overflow check
-	return -1 - int64(ui), nil
+	pos := ui + 1
+	if pos > uint64(-math.MinInt64) {
+		return -1, errors.New("cbor: negative integer out of rage of int64 type")
+	}
+
+	return -int64(pos), nil
 }
 
 // Decode expecting a positive integer.
@@ -80,7 +90,9 @@ func (d *Decoder) decodeLen(majorByte byte) (i int, err error) {
 	if err != nil {
 		return 0, err
 	}
-	// TODO needs overflow check
+	if ui > uint64(maxInt) {
+		return 0, errors.New("cbor: positive integer is out of length")
+	}
 	return int(ui), nil
 }
 

diff --git a/cbor/cborFixtures_test.go b/cbor/cborFixtures_test.go
@@ -4,6 +4,8 @@ import (
 	"bytes"
 	"encoding/base64"
 	"fmt"
+	"io/ioutil"
+	"testing"
 
 	. "github.com/polydawn/refmt/tok"
 	"github.com/polydawn/refmt/tok/fixtures"
@@ -31,6 +33,21 @@ func deB64(s string) []byte {
 	return bs
 }
 
+func TestExportFixtures(t *testing.T) {
+	t.SkipNow()
+	for i, fix := range cborFixtures {
+		if fix.encodeResult != nil || fix.decodeResult != nil {
+			continue
+		}
+
+		err := ioutil.WriteFile(fmt.Sprintf("fuzz-data/corpus/%d", i), fix.serial, 0666)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+
+}
+
 var inapplicable = fmt.Errorf("skipme: inapplicable")
 
 var cborFixtures = []struct {

diff --git a/cbor/cbor_fuzz.go b/cbor/cbor_fuzz.go
@@ -0,0 +1,44 @@
+// +build gofuzz
+
+package cbor
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/polydawn/refmt/shared"
+)
+
+func Fuzz(data []byte) int {
+	dec := NewDecoder(bytes.NewReader(data))
+	buf := &bytes.Buffer{}
+
+	// Run it once to sanitize
+	pump := shared.TokenPump{dec, NewEncoder(buf)}
+	err := pump.Run()
+	if err != nil {
+		return 0
+	}
+
+	// Run second loop to check stability
+	sanitized := buf.Bytes()
+	dec = NewDecoder(bytes.NewReader(sanitized))
+	buf = &bytes.Buffer{}
+	pump = shared.TokenPump{dec, NewEncoder(buf)}
+	err = pump.Run()
+	if err != nil {
+		fmt.Printf("input: %v, sanitized: %v", data, sanitized)
+		panic("sanitised failed to prase: " + err.Error())
+	}
+
+	out := buf.Bytes()
+	if !bytes.Equal(out, sanitized) {
+		fmt.Printf("santized: %v, output: %v\n", sanitized, out)
+		panic("looping data failed")
+	}
+
+	if len(out) == len(data) {
+		return 2
+	}
+	return 1
+}
diff --git a/cbor/fuzz-data/.gitignore b/cbor/fuzz-data/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!corpus
+!corpus/*
diff --git a/cbor/fuzz-data/corpus/0 b/cbor/fuzz-data/corpus/0
@@ -0,0 +1 @@
+evalue
diff --git a/cbor/fuzz-data/corpus/00c2d8bd7f9d5778692ffa356e2a41d0b320af74-5 b/cbor/fuzz-data/corpus/00c2d8bd7f9d5778692ffa356e2a41d0b320af74-5
diff --git a/cbor/fuzz-data/corpus/01d799d0a49096f3cbcc8f4a25a5ebafa3bdd86d-1 b/cbor/fuzz-data/corpus/01d799d0a49096f3cbcc8f4a25a5ebafa3bdd86d-1
@@ -0,0 +1 @@
+�ebk2bv2�
diff --git a/cbor/fuzz-data/corpus/03a108515663d539c698013b2a6b01aaa99b8e9b-7 b/cbor/fuzz-data/corpus/03a108515663d539c698013b2a6b01aaa99b8e9b-7
@@ -0,0 +1 @@
+�ak�ak�-�ak�-�ak�ak�-�ak�ak�-�ak�ak�ak�ak�-�ak�ak�ak�-�ak�ak�-�ak�ak�ak�ak�ak�ak�-�ak�ak�ak�56
diff --git a/cbor/fuzz-data/corpus/079462bfb0217e988208a49ff833242524590e82-11 b/cbor/fuzz-data/corpus/079462bfb0217e988208a49ff833242524590e82-11
@@ -0,0 +1 @@
+�b���5�5�5�5�5�5�5�5�5�5�5�5�5�5�5�5���
diff --git a/cbor/fuzz-data/corpus/080c81eb6259dac44d602a85a8fffab4737b4612-8 b/cbor/fuzz-data/corpus/080c81eb6259dac44d602a85a8fffab4737b4612-8
@@ -0,0 +1 @@
+��_��_��_��_��_��
diff --git a/cbor/fuzz-data/corpus/0822b29f4263def430e7e132211faf3fc27dabd8-4 b/cbor/fuzz-data/corpus/0822b29f4263def430e7e132211faf3fc27dabd8-4
@@ -0,0 +1 @@
+�5v2151512�5uebv2155111512312572702%:15312572702%:
diff --git a/cbor/fuzz-data/corpus/082e8941734d10953526a093a2d367c3065d88c9-9 b/cbor/fuzz-data/corpus/082e8941734d10953526a093a2d367c3065d88c9-9
@@ -0,0 +1 @@
+����`�``�`���`�`���`���`����`���`��`����
diff --git a/cbor/fuzz-data/corpus/0877274f3ddc1fdf2f491791db17fcb71302eae8-5 b/cbor/fuzz-data/corpus/0877274f3ddc1fdf2f491791db17fcb71302eae8-5
diff --git a/cbor/fuzz-data/corpus/08d521fdb1934deefb95f1e40d20e10185743156-5 b/cbor/fuzz-data/corpus/08d521fdb1934deefb95f1e40d20e10185743156-5
diff --git a/cbor/fuzz-data/corpus/08d760aff5d152ed3307cd7a9a1dfd8cd4159220-2 b/cbor/fuzz-data/corpus/08d760aff5d152ed3307cd7a9a1dfd8cd4159220-2
@@ -0,0 +1 @@
+�6134751:8882348962738v-06131347$>
diff --git a/cbor/fuzz-data/corpus/09db419387b7ddaec6679b8c35514caaa95393c0-6 b/cbor/fuzz-data/corpus/09db419387b7ddaec6679b8c35514caaa95393c0-6
@@ -0,0 +1 @@
+� ��� ����
diff --git a/cbor/fuzz-data/corpus/0a5740d33b5ed7381e62f828b7854e67ec71b56c-1 b/cbor/fuzz-data/corpus/0a5740d33b5ed7381e62f828b7854e67ec71b56c-1
diff --git a/cbor/fuzz-data/corpus/0af0f3927ceda2ac7f184ee5a45cdaa5b6a9bd4b-2 b/cbor/fuzz-data/corpus/0af0f3927ceda2ac7f184ee5a45cdaa5b6a9bd4b-2
diff --git a/cbor/fuzz-data/corpus/0b23dbf58351d1be7875f14ea0b814fc3e26bbfc-5 b/cbor/fuzz-data/corpus/0b23dbf58351d1be7875f14ea0b814fc3e26bbfc-5
@@ -0,0 +1 @@
+؀�؀����؀�����؀�������؀���������
diff --git a/cbor/fuzz-data/corpus/0b37d3b427f5dafd1c722c98ac95d93bab9eaa53-10 b/cbor/fuzz-data/corpus/0b37d3b427f5dafd1c722c98ac95d93bab9eaa53-10
@@ -0,0 +1 @@
+�������������������������������������������������������������������
diff --git a/cbor/fuzz-data/corpus/0c0e6f90d39e0a2569bf3019134456b21c01a429-11 b/cbor/fuzz-data/corpus/0c0e6f90d39e0a2569bf3019134456b21c01a429-11
@@ -0,0 +1 @@
+����`�``�`���`�`������������������������������������������������������
diff --git a/cbor/fuzz-data/corpus/0ce2971832e7bb017b2956e696f74abe6876f032-5 b/cbor/fuzz-data/corpus/0ce2971832e7bb017b2956e696f74abe6876f032-5
diff --git a/cbor/fuzz-data/corpus/0d96e123a842eafc337563c599dd2e1233c0f089-1 b/cbor/fuzz-data/corpus/0d96e123a842eafc337563c599dd2e1233c0f089-1
@@ -0,0 +1 @@
+�eluebv346944695195361418882384896278381347656252�
diff --git a/cbor/fuzz-data/corpus/0ddad824cecc91ae5ecc5945b355b7fa9bec1e24-5 b/cbor/fuzz-data/corpus/0ddad824cecc91ae5ecc5945b355b7fa9bec1e24-5
diff --git a/cbor/fuzz-data/corpus/0e703ca882f06a5e095bb5e744e58c45775aba8b-10 b/cbor/fuzz-data/corpus/0e703ca882f06a5e095bb5e744e58c45775aba8b-10
diff --git a/cbor/fuzz-data/corpus/0ef9bc6cf0bead298bfa979c4e81cee61565124f-2 b/cbor/fuzz-data/corpus/0ef9bc6cf0bead298bfa979c4e81cee61565124f-2
diff --git a/cbor/fuzz-data/corpus/0fbf705dc376dc3defe507e8a9b56789f07b173c-3 b/cbor/fuzz-data/corpus/0fbf705dc376dc3defe507e8a9b56789f07b173c-3
diff --git a/cbor/fuzz-data/corpus/10 b/cbor/fuzz-data/corpus/10
@@ -0,0 +1 @@
+�
diff --git a/cbor/fuzz-data/corpus/11 b/cbor/fuzz-data/corpus/11
@@ -0,0 +1 @@
+��
diff --git a/cbor/fuzz-data/corpus/113ed6dc91ec1c9810762f4b82c7190181a9781e-12 b/cbor/fuzz-data/corpus/113ed6dc91ec1c9810762f4b82c7190181a9781e-12
diff --git a/cbor/fuzz-data/corpus/12 b/cbor/fuzz-data/corpus/12
@@ -0,0 +1 @@
+�evalue
diff --git a/cbor/fuzz-data/corpus/124c5c404eacc515375c3a71d05467871dce06fc-9 b/cbor/fuzz-data/corpus/124c5c404eacc515375c3a71d05467871dce06fc-9
diff --git a/cbor/fuzz-data/corpus/13 b/cbor/fuzz-data/corpus/13
@@ -0,0 +1 @@
+�evalue�
diff --git a/cbor/fuzz-data/corpus/14f58395c4c4a9d86a2cd8d23a2493036022d77e-3 b/cbor/fuzz-data/corpus/14f58395c4c4a9d86a2cd8d23a2493036022d77e-3
@@ -0,0 +1 @@
+�489627834796278347653252�
diff --git a/cbor/fuzz-data/corpus/15 b/cbor/fuzz-data/corpus/15
@@ -0,0 +1 @@
+�evaluebv2
diff --git a/cbor/fuzz-data/corpus/1585b5f9855a069d9335f91339243d548909cb11-2 b/cbor/fuzz-data/corpus/1585b5f9855a069d9335f91339243d548909cb11-2
diff --git a/cbor/fuzz-data/corpus/15c9f24719cfd894487c2e96f3b7bdc4d642293b-2 b/cbor/fuzz-data/corpus/15c9f24719cfd894487c2e96f3b7bdc4d642293b-2
@@ -0,0 +1 @@
+�3L300472H333611R4410150625�evalue���
diff --git a/cbor/fuzz-data/corpus/16 b/cbor/fuzz-data/corpus/16
@@ -0,0 +1 @@
+�evaluebv2�
diff --git a/cbor/fuzz-data/corpus/168e7d8cf0fb10b929c76675cc0112282e63b661-3 b/cbor/fuzz-data/corpus/168e7d8cf0fb10b929c76675cc0112282e63b661-3
diff --git a/cbor/fuzz-data/corpus/17 b/cbor/fuzz-data/corpus/17
@@ -0,0 +1 @@
+�bk1bv1bke�bohdwheecwow��
diff --git a/cbor/fuzz-data/corpus/1727d7c2d0f62487d138b97af7aea28d6d7bc65b-2 b/cbor/fuzz-data/corpus/1727d7c2d0f62487d138b97af7aea28d6d7bc65b-2
@@ -0,0 +1 @@
+��(���(��2�
diff --git a/cbor/fuzz-data/corpus/18 b/cbor/fuzz-data/corpus/18
@@ -0,0 +1 @@
+�bke�bohdwheecwow�bk1bv1�
diff --git a/cbor/fuzz-data/corpus/1853df160958748f7de5638c163d644ddcde6ee4-5 b/cbor/fuzz-data/corpus/1853df160958748f7de5638c163d644ddcde6ee4-5
@@ -0,0 +1 @@
+�������������
diff --git a/cbor/fuzz-data/corpus/19 b/cbor/fuzz-data/corpus/19
@@ -0,0 +1 @@
+��akavdwhee�bk1bv1
diff --git a/cbor/fuzz-data/corpus/19020e5166ce2fae279dcf655b4cef3b28d34718-3 b/cbor/fuzz-data/corpus/19020e5166ce2fae279dcf655b4cef3b28d34718-3
diff --git a/cbor/fuzz-data/corpus/1b3acd67ee67427f42534fc3b3c6fedaf55dcbc5-1 b/cbor/fuzz-data/corpus/1b3acd67ee67427f42534fc3b3c6fedaf55dcbc5-1
@@ -0,0 +1 @@
+��
diff --git a/cbor/fuzz-data/corpus/1bf293fc161bcb07f34851ebb02c8ed65f716845-2 b/cbor/fuzz-data/corpus/1bf293fc161bcb07f34851ebb02c8ed65f716845-2
@@ -0,0 +1 @@
+Ρak�2�a�Ρakava
diff --git a/cbor/fuzz-data/corpus/1d07c49fb0625eafa6efdc452acc07e78ea178eb-2 b/cbor/fuzz-data/corpus/1d07c49fb0625eafa6efdc452acc07e78ea178eb-2
@@ -0,0 +1 @@
+���2�
diff --git a/cbor/fuzz-data/corpus/1dcf0ec2351966fc2b0babee787f535a2683f130-1 b/cbor/fuzz-data/corpus/1dcf0ec2351966fc2b0babee787f535a2683f130-1
@@ -0,0 +1 @@
+�
diff --git a/cbor/fuzz-data/corpus/1f2c63081af7dfb504c6239e546105b2582e4e67-8 b/cbor/fuzz-data/corpus/1f2c63081af7dfb504c6239e546105b2582e4e67-8
@@ -0,0 +1 @@
+� ��� �� ����� �� ������
diff --git a/cbor/fuzz-data/corpus/20 b/cbor/fuzz-data/corpus/20
@@ -0,0 +1 @@
+��akav�dwhee�bk1bv1��
diff --git a/cbor/fuzz-data/corpus/20bfe752bfdb8783a109db7003ed214534463e7e-1 b/cbor/fuzz-data/corpus/20bfe752bfdb8783a109db7003ed214534463e7e-1
@@ -0,0 +1 @@
+B@
diff --git a/cbor/fuzz-data/corpus/20eec9a326b70973a6f008872e75e44eeb833c88-3 b/cbor/fuzz-data/corpus/20eec9a326b70973a6f008872e75e44eeb833c88-3
diff --git a/cbor/fuzz-data/corpus/21 b/cbor/fuzz-data/corpus/21
@@ -0,0 +1 @@
+���
diff --git a/cbor/fuzz-data/corpus/21ae693e7e7497a587c96bfe964be76f57c2fe7c-2 b/cbor/fuzz-data/corpus/21ae693e7e7497a587c96bfe964be76f57c2fe7c-2
@@ -0,0 +1 @@
+�4896278347656252�
diff --git a/cbor/fuzz-data/corpus/22 b/cbor/fuzz-data/corpus/22
@@ -0,0 +1 @@
+������
diff --git a/cbor/fuzz-data/corpus/225560db0daa6b6a93a91a063f50072205e9e0f1-11 b/cbor/fuzz-data/corpus/225560db0daa6b6a93a91a063f50072205e9e0f1-11
diff --git a/cbor/fuzz-data/corpus/23 b/cbor/fuzz-data/corpus/23
@@ -0,0 +1 @@
+�ak�bk2bv2
diff --git a/cbor/fuzz-data/corpus/231bf1bd37eeeefa3a174bc3f96309141ca5eb54-7 b/cbor/fuzz-data/corpus/231bf1bd37eeeefa3a174bc3f96309141ca5eb54-7
@@ -0,0 +1 @@
+���������|������|���
diff --git a/cbor/fuzz-data/corpus/23eb4d3f4155395a74e9d534f97ff4c1908f5aac-1 b/cbor/fuzz-data/corpus/23eb4d3f4155395a74e9d534f97ff4c1908f5aac-1
@@ -0,0 +1 @@
+Y
diff --git a/cbor/fuzz-data/corpus/24 b/cbor/fuzz-data/corpus/24
@@ -0,0 +1 @@
+�ak�bk2bv2��
diff --git a/cbor/fuzz-data/corpus/25 b/cbor/fuzz-data/corpus/25
@@ -0,0 +1 @@
+�
diff --git a/cbor/fuzz-data/corpus/25f9e7bff39c2cb6f55a6193b714a20f6ba377e3-1 b/cbor/fuzz-data/corpus/25f9e7bff39c2cb6f55a6193b714a20f6ba377e3-1
@@ -0,0 +1 @@
+��(��2�
diff --git a/cbor/fuzz-data/corpus/26 b/cbor/fuzz-data/corpus/26
@@ -0,0 +1 @@
+��
diff --git a/cbor/fuzz-data/corpus/26eb9e442db2ac77c4e90d863163bbf456b68994-6 b/cbor/fuzz-data/corpus/26eb9e442db2ac77c4e90d863163bbf456b68994-6
@@ -0,0 +1 @@
+���������������������
diff --git a/cbor/fuzz-data/corpus/277c19167c80e9096850d842eb52923e75b2c675-7 b/cbor/fuzz-data/corpus/277c19167c80e9096850d842eb52923e75b2c675-7
@@ -0,0 +1 @@
+� ��� �� �����
diff --git a/cbor/fuzz-data/corpus/28 b/cbor/fuzz-data/corpus/28
@@ -0,0 +1 @@
+�ak�
diff --git a/cbor/fuzz-data/corpus/29 b/cbor/fuzz-data/corpus/29
@@ -0,0 +1 @@
+�ak��
diff --git a/cbor/fuzz-data/corpus/2ab10899a9f4840cc5359c9040142cf722f1172d-4 b/cbor/fuzz-data/corpus/2ab10899a9f4840cc5359c9040142cf722f1172d-4
@@ -0,0 +1 @@
+��������
diff --git a/cbor/fuzz-data/corpus/2b5a1da7aa8fe76ab1532e6ec2f73c44631d8bb6-2 b/cbor/fuzz-data/corpus/2b5a1da7aa8fe76ab1532e6ec2f73c44631d8bb6-2
@@ -0,0 +1 @@
+�b�e2220446025031300472613533361107144567552939551135250625333611640625B@�evalue���
diff --git a/cbor/fuzz-data/corpus/2ba44f2bb00ff7088debc3cec9192248ebecad65-3 b/cbor/fuzz-data/corpus/2ba44f2bb00ff7088debc3cec9192248ebecad65-3
@@ -0,0 +1 @@
+�68081828+8485868788898888528384%58688888
diff --git a/cbor/fuzz-data/corpus/2c79b2121c02607f55589d5a2b285f1642bee691-7 b/cbor/fuzz-data/corpus/2c79b2121c02607f55589d5a2b285f1642bee691-7
@@ -0,0 +1 @@
+��_��_��_��_��_�_
diff --git a/cbor/fuzz-data/corpus/2cbc821a695966cdcfb30aaeb9b88e6b285a6dd4-1 b/cbor/fuzz-data/corpus/2cbc821a695966cdcfb30aaeb9b88e6b285a6dd4-1
@@ -0,0 +1 @@
+��k
diff --git a/cbor/fuzz-data/corpus/2e3cb6bd56a850569005199dd5b2aeef973a4823-14 b/cbor/fuzz-data/corpus/2e3cb6bd56a850569005199dd5b2aeef973a4823-14
@@ -0,0 +1 @@
+�;��������;��������;��������;��������;��������
diff --git a/cbor/fuzz-data/corpus/2fdbd115e9e45c784d3306bb48a037073635576e-3 b/cbor/fuzz-data/corpus/2fdbd115e9e45c784d3306bb48a037073635576e-3
@@ -0,0 +1 @@
+�������������������
diff --git a/cbor/fuzz-data/corpus/3 b/cbor/fuzz-data/corpus/3
@@ -0,0 +1,2 @@
+qstr
+broken	tabbed
diff --git a/cbor/fuzz-data/corpus/30 b/cbor/fuzz-data/corpus/30
@@ -0,0 +1 @@
+���
diff --git a/cbor/fuzz-data/corpus/3038b2c85556fea3b84166ea45fe08b3de9f00d1-6 b/cbor/fuzz-data/corpus/3038b2c85556fea3b84166ea45fe08b3de9f00d1-6
@@ -0,0 +1 @@
+�������������������������������������
diff --git a/cbor/fuzz-data/corpus/3153007da02255c6dbcdca3548276fb83d40a618-5 b/cbor/fuzz-data/corpus/3153007da02255c6dbcdca3548276fb83d40a618-5
@@ -0,0 +1 @@
+����������
diff --git a/cbor/fuzz-data/corpus/33 b/cbor/fuzz-data/corpus/33
diff --git a/cbor/fuzz-data/corpus/3323452904721da3ad33b3e74040d7515ac33956 b/cbor/fuzz-data/corpus/3323452904721da3ad33b3e74040d7515ac33956
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