From a463cba1df33d29c40612d313cdf7e945fe8cc86 Mon Sep 17 00:00:00 2001
From: Emmanuel T Odeke <emmanuel@orijtech.com>
Date: Fri, 23 Apr 2021 17:34:15 -0700
Subject: [PATCH] fuzz: add tendermint/go-amino.DecodeTime (#9195)

go-amino is a heavily used dependency and given that
Tendermrint isn't yet setup for oss-fuzz, this change
is a start for it.

While here, add the oss-fuzz entry for crypto/types.BitArray
CompactUnmarshal fuzzer for PR #9166.

Updates #7921
---
 fuzz/oss-fuzz-build.sh                        |   4 ++
 fuzz/tendermint/amino/DecodeTime/corpus/1.txt |   0
 fuzz/tendermint/amino/DecodeTime/corpus/2.txt |   1 +
 fuzz/tendermint/amino/DecodeTime/corpus/3.txt |   1 +
 fuzz/tendermint/amino/DecodeTime/corpus/4.txt |   1 +
 fuzz/tendermint/amino/DecodeTime/corpus/5.txt |   1 +
 fuzz/tendermint/amino/DecodeTime/corpus/6.txt |   1 +
 fuzz/tendermint/amino/DecodeTime/corpus/7.txt |   1 +
 ...9d1996cb2f705ac232aa433ece29827b7939f32d-1 |   1 +
 ...bd562f1af1c208bddcc6b5dc96a9265e644774a9-1 |   1 +
 ...e26e6189aa4ba285702846e135931b9b29314b32-1 | Bin 0 -> 12 bytes
 ...ff4d5d151fbb8564c87c8358f4de12e218be0488-1 |   1 +
 fuzz/tendermint/amino/DecodeTime/fuzz.go      |  24 ++++++++++++
 fuzz/tendermint/amino/DecodeTime/gen/main.go  |  35 ++++++++++++++++++
 14 files changed, 72 insertions(+)
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/1.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/2.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/3.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/4.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/5.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/6.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/7.txt
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/9d1996cb2f705ac232aa433ece29827b7939f32d-1
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/bd562f1af1c208bddcc6b5dc96a9265e644774a9-1
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/e26e6189aa4ba285702846e135931b9b29314b32-1
 create mode 100644 fuzz/tendermint/amino/DecodeTime/corpus/ff4d5d151fbb8564c87c8358f4de12e218be0488-1
 create mode 100644 fuzz/tendermint/amino/DecodeTime/fuzz.go
 create mode 100644 fuzz/tendermint/amino/DecodeTime/gen/main.go

diff --git a/fuzz/oss-fuzz-build.sh b/fuzz/oss-fuzz-build.sh
index 216132c5e04f..6bb4103753df 100644
--- a/fuzz/oss-fuzz-build.sh
+++ b/fuzz/oss-fuzz-build.sh
@@ -4,6 +4,10 @@ export FUZZ_ROOT="github.com/cosmos/cosmos-sdk"
 
 compile_go_fuzzer "$FUZZ_ROOT"/fuzz/crypto/hd/deriveprivatekeyforpath Fuzz fuzz_crypto_hd_deriveprivatekeyforpath fuzz
 
+compile_go_fuzzer "$FUZZ_ROOT"/fuzz/crypto/types/compactbitarray/marshalunmarshal Fuzz fuzz_crypto_types_compactbitarray_marshalunmarshal fuzz
+
+compile_go_fuzzer "$FUZZ_ROOT"/fuzz/tendermint/amino/decodetime Fuzz fuzz_tendermint_amino_decodetime fuzz
+
 compile_go_fuzzer "$FUZZ_ROOT"/fuzz/types/parsecoin Fuzz fuzz_types_parsecoin fuzz
 compile_go_fuzzer "$FUZZ_ROOT"/fuzz/types/parsedeccoin Fuzz fuzz_types_parsedeccoin fuzz
 compile_go_fuzzer "$FUZZ_ROOT"/fuzz/types/parsetimebytes Fuzz fuzz_types_parsetimebytes fuzz
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/1.txt b/fuzz/tendermint/amino/DecodeTime/corpus/1.txt
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/2.txt b/fuzz/tendermint/amino/DecodeTime/corpus/2.txt
new file mode 100644
index 000000000000..c9ec833cb4de
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/2.txt
@@ -0,0 +1 @@
+ΆΓ„ˆŒš
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/3.txt b/fuzz/tendermint/amino/DecodeTime/corpus/3.txt
new file mode 100644
index 000000000000..653450b7f5e3
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/3.txt
@@ -0,0 +1 @@
+ΐ¦½‡
؝θ
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/4.txt b/fuzz/tendermint/amino/DecodeTime/corpus/4.txt
new file mode 100644
index 000000000000..6350d0750e5a
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/4.txt
@@ -0,0 +1 @@
+Άε’•π“š
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/5.txt b/fuzz/tendermint/amino/DecodeTime/corpus/5.txt
new file mode 100644
index 000000000000..3c3068c10f51
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/5.txt
@@ -0,0 +1 @@
+φΏ£„π“š
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/6.txt b/fuzz/tendermint/amino/DecodeTime/corpus/6.txt
new file mode 100644
index 000000000000..86006636f4c7
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/6.txt
@@ -0,0 +1 @@
+φΖχƒπ“š
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/7.txt b/fuzz/tendermint/amino/DecodeTime/corpus/7.txt
new file mode 100644
index 000000000000..37444c7f7a45
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/7.txt
@@ -0,0 +1 @@
+Ά‘ψςπ“š
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/9d1996cb2f705ac232aa433ece29827b7939f32d-1 b/fuzz/tendermint/amino/DecodeTime/corpus/9d1996cb2f705ac232aa433ece29827b7939f32d-1
new file mode 100644
index 000000000000..3dc87bb2c1c5
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/9d1996cb2f705ac232aa433ece29827b7939f32d-1
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/bd562f1af1c208bddcc6b5dc96a9265e644774a9-1 b/fuzz/tendermint/amino/DecodeTime/corpus/bd562f1af1c208bddcc6b5dc96a9265e644774a9-1
new file mode 100644
index 000000000000..d65dd8f1d544
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/bd562f1af1c208bddcc6b5dc96a9265e644774a9-1
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/e26e6189aa4ba285702846e135931b9b29314b32-1 b/fuzz/tendermint/amino/DecodeTime/corpus/e26e6189aa4ba285702846e135931b9b29314b32-1
new file mode 100644
index 0000000000000000000000000000000000000000..e7b1d3ac9d3ddad9fae8dcfecf4043bf62169015
GIT binary patch
literal 12
Tcmd-$uxxirc=LhRd)pZRDgOp{

literal 0
HcmV?d00001

diff --git a/fuzz/tendermint/amino/DecodeTime/corpus/ff4d5d151fbb8564c87c8358f4de12e218be0488-1 b/fuzz/tendermint/amino/DecodeTime/corpus/ff4d5d151fbb8564c87c8358f4de12e218be0488-1
new file mode 100644
index 000000000000..9fda2b299abd
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/corpus/ff4d5d151fbb8564c87c8358f4de12e218be0488-1
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/fuzz/tendermint/amino/DecodeTime/fuzz.go b/fuzz/tendermint/amino/DecodeTime/fuzz.go
new file mode 100644
index 000000000000..8bb5e364ac53
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/fuzz.go
@@ -0,0 +1,24 @@
+package decodetime
+
+import (
+	"fmt"
+
+	amino "github.com/tendermint/go-amino"
+)
+
+func Fuzz(data []byte) int {
+	if len(data) == 0 {
+		return -1
+	}
+	t, n, err := amino.DecodeTime(data)
+	if err != nil {
+		return -1
+	}
+	if n < 0 {
+		panic(fmt.Sprintf("n=%d < 0", n))
+	}
+	if t.IsZero() {
+		return 0
+	}
+	return 1
+}
diff --git a/fuzz/tendermint/amino/DecodeTime/gen/main.go b/fuzz/tendermint/amino/DecodeTime/gen/main.go
new file mode 100644
index 000000000000..1357c41f7043
--- /dev/null
+++ b/fuzz/tendermint/amino/DecodeTime/gen/main.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	amino "github.com/tendermint/go-amino"
+)
+
+func main() {
+	times := []time.Time{
+		time.Unix(0, 0),
+		time.Now(),
+		time.Date(1979, time.January, 02, 10, 11, 12, 7999192, time.UTC),
+		time.Now().Add(10000 * time.Hour),
+		time.Now().Add(100 * time.Hour),
+		time.Now().Add(-100 * time.Hour),
+		time.Now().Add(-10000 * time.Hour),
+	}
+
+	for i, t := range times {
+		func() {
+			f, err := os.Create(fmt.Sprintf("%d.txt", i+1))
+			if err != nil {
+				panic(err)
+			}
+			defer f.Close()
+
+			if err := amino.EncodeTime(f, t); err != nil {
+				panic(err)
+			}
+		}()
+	}
+}