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/
2018-1-Capstone1-VulnNotti
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Authored by
노현종
2018-05-19 02:12:46 +0900
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Commit
0b6add271192929f4900aa67c27413a8d74d64cb
0b6add27
1 parent
30ead269
패치 전 취약한 함수 코드 추출 완성
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Showing
3 changed files
with
159 additions
and
15 deletions
Vulnerablity_DB/VulnCrawler/VulnAbstractCrawler.cs
Vulnerablity_DB/VulnCrawler/VulnC.cs
Vulnerablity_DB/VulnCrawler/VulnWorker.cs
Vulnerablity_DB/VulnCrawler/VulnAbstractCrawler.cs
View file @
0b6add2
...
...
@@ -114,14 +114,126 @@ namespace VulnCrawler
/// <returns>함수 문자열</returns>
protected
abstract
string
GetOriginalFunc
(
Stream
oldStream
,
string
methodName
);
// 테스트용 함수 곧 삭제될 운명
public
string
GetOriginalFuncTest
(
Stream
oldStream
,
string
methodName
,
int
start
)
{
StringBuilder
oldBuilder
=
new
StringBuilder
();
using
(
var
reader
=
new
StreamReader
(
oldStream
))
{
bool
found
=
false
;
bool
found2
=
false
;
bool
commentLine
=
false
;
int
bracketCount
=
-
1
;
string
stringPattern
=
@"[""].*[""]"
;
string
commentPattern
=
@"\/\*.+\*\/"
;
string
commentPattern2
=
@"\/\*"
;
string
commentPattern3
=
@"\*\/"
;
int
readCount
=
0
;
Queue
<
string
>
tempQ
=
new
Queue
<
string
>();
while
(!
reader
.
EndOfStream
)
{
string
line
=
reader
.
ReadLine
();
if
(
readCount
++
<
start
)
{
tempQ
.
Enqueue
(
line
);
continue
;
}
Stack
<
string
>
tempStack
=
new
Stack
<
string
>();
while
(
tempQ
.
Count
>
0
)
{
string
s
=
tempQ
.
Dequeue
();
tempStack
.
Push
(
s
);
string
method
=
Regex
.
Escape
(
methodName
);
if
(
Regex
.
Match
(
s
,
$
"{method}"
).
Success
)
{
break
;
}
}
while
(
tempStack
.
Count
>
0
)
{
string
s
=
tempStack
.
Pop
();
string
trim
=
s
.
Trim
();
if
(
commentLine
)
{
if
(
Regex
.
IsMatch
(
trim
,
commentPattern3
))
{
commentLine
=
false
;
trim
=
Regex
.
Split
(
trim
,
commentPattern3
)[
1
];
}
continue
;
}
string
removeString
=
Regex
.
Replace
(
trim
,
stringPattern
,
""
);
// /* ~ 패턴
if
(
Regex
.
IsMatch
(
trim
,
commentPattern2
))
{
// /* ~ */ 패턴이 아닌 경우
if
(!
Regex
.
IsMatch
(
trim
,
commentPattern
))
{
commentLine
=
true
;
}
trim
=
Regex
.
Split
(
trim
,
"/*"
)[
0
];
}
if
(
string
.
IsNullOrWhiteSpace
(
trim
))
{
continue
;
}
int
openBracketCount
=
removeString
.
Count
(
c
=>
c
==
'{'
);
int
closeBracketCount
=
removeString
.
Count
(
c
=>
c
==
'}'
);
int
subtract
=
openBracketCount
-
closeBracketCount
;
bracketCount
+=
subtract
;
// 메서드 시작 괄호 찾은 경우
if
(
found2
)
{
// 괄호가 모두 닫혔으니 종료
if
(
bracketCount
<
0
)
{
Console
.
WriteLine
(
"괄호끝"
);
break
;
}
// oldBuilder.AppendLine(line);
}
else
{
if
(
openBracketCount
>
0
)
{
found2
=
true
;
}
}
oldBuilder
.
AppendLine
(
s
);
}
}
}
Console
.
WriteLine
(
"찾음"
);
Console
.
WriteLine
(
oldBuilder
.
ToString
());
Console
.
ReadLine
();
return
oldBuilder
.
ToString
();
}
/// <summary>
/// 실제 프로세스
/// </summary>
/// <param name="oldStream"></param>
/// <param name="methodName"></param>
/// <returns></returns>
public
virtual
(
string
originalFunc
,
string
hash
)
Process
(
Stream
oldStream
,
string
methodName
)
{
public
virtual
(
string
originalFunc
,
string
hash
)
Process
(
Stream
oldStream
,
string
methodName
,
int
start
)
{
// 패치 전 원본 함수 구하고
string
func
=
GetOriginalFunc
(
oldStream
,
methodName
);
// 주석 제거하고
...
...
Vulnerablity_DB/VulnCrawler/VulnC.cs
View file @
0b6add2
...
...
@@ -52,34 +52,44 @@ namespace VulnCrawler
// 메서드를 찾은 경우
if
(
found
)
{
Console
.
WriteLine
(
"찾았었음"
);
string
trim
=
line
.
Trim
();
// 범위 주석 진행되고 있으면 넘어감
if
(
commentLine
)
{
// 혹시 범위 주석이 끝났는지 체크
if
(
Regex
.
IsMatch
(
trim
,
commentPattern3
))
{
commentLine
=
false
;
trim
=
Regex
.
Split
(
trim
,
commentPattern3
)[
1
];
}
else
{
continue
;
}
}
if
(
string
.
IsNullOrWhiteSpace
(
trim
))
{
continue
;
}
// "" 문자열 제거
string
removeString
=
Regex
.
Replace
(
trim
,
stringPattern
,
""
);
// /* ~ 패턴
if
(
Regex
.
IsMatch
(
trim
,
commentPattern2
))
{
trim
=
Regex
.
Split
(
trim
,
"/*"
)[
0
];
// /* ~ */ 패턴이 아닌 경우
if
(!
Regex
.
IsMatch
(
trim
,
commentPattern
))
{
commentLine
=
true
;
}
trim
=
Regex
.
Split
(
trim
,
"/*"
)[
0
];
}
// 비어있는 경우 넘어감
if
(
string
.
IsNullOrWhiteSpace
(
trim
))
{
continue
;
}
int
openBracketCount
=
removeString
.
Count
(
c
=>
c
==
'{'
);
int
closeBracketCount
=
removeString
.
Count
(
c
=>
c
==
'}'
);
int
subtract
=
openBracketCount
-
closeBracketCount
;
...
...
@@ -87,31 +97,44 @@ namespace VulnCrawler
// 메서드 시작 괄호 찾은 경우
if
(
found2
)
{
oldBuilder
.
AppendLine
(
line
);
// 괄호가 모두 닫혔으니 종료
if
(
bracketCount
<
0
)
{
Console
.
WriteLine
(
"괄호끝"
);
break
;
}
oldBuilder
.
AppendLine
(
line
);
}
else
else
// 메서드는 찾았으나 아직 시작 괄호를 못찾은 경우
{
oldBuilder
.
AppendLine
(
line
);
if
(
openBracketCount
>
0
)
{
found2
=
true
;
}
else
{
//아직 { 괄호를 못찾았는데 );를 만났다면 메서드 선언 부분이니 넘어감
if
(
trim
.
EndsWith
(
");"
))
{
found
=
false
;
oldBuilder
.
Clear
();
continue
;
}
}
}
}
// 아직 메서드를 못찾은 경우
else
{
// 메서드 찾았는지 확인
if
(
Regex
.
Match
(
line
,
$
"{methodName}"
).
Success
)
{
string
trim
=
line
.
Trim
();
// 주석으로 시작했다면 넘어감
if
(
trim
.
StartsWith
(
"//"
))
{
continue
;
...
...
@@ -121,16 +144,20 @@ namespace VulnCrawler
{
continue
;
}
if
(
Regex
.
Match
(
trim
,
$
@"""[\s]*({methodName})"
).
Success
)
// 혹시 메서드가 문자열 사이에 있다면 넘어감..
if
(
Regex
.
Match
(
trim
,
$
@"""[.]*({methodName})"
).
Success
)
{
continue
;
}
// 만약 찾은 메서드 라인에서 중괄호 {가 시작된 경우
if
(
Regex
.
Match
(
trim
,
$
@"{methodName}\s*"
+
@"\{"
).
Success
)
{
// 동시에 } 닫히기까지 한 경우 드물겠지만..
if
(
trim
.
EndsWith
(
"}"
))
{
oldBuilder
.
AppendLine
(
line
);
break
;
}
found2
=
true
;
...
...
@@ -143,11 +170,13 @@ namespace VulnCrawler
}
}
Console
.
WriteLine
(
"찾음"
);
Console
.
WriteLine
(
oldBuilder
.
ToString
());
Console
.
ReadLine
();
return
oldBuilder
.
ToString
();
}
}
}
...
...
Vulnerablity_DB/VulnCrawler/VulnWorker.cs
View file @
0b6add2
...
...
@@ -108,10 +108,13 @@ namespace VulnCrawler
{
var
match
=
reg
as
Match
;
string
methodName
=
match
.
Groups
[
VulnAbstractCrawler
.
MethodName
].
Value
.
Trim
();
int
start
=
int
.
Parse
(
match
.
Groups
[
VulnAbstractCrawler
.
OldStart
].
Value
);
Console
.
WriteLine
(
"methodName = "
+
methodName
);
string
originalFunc
,
md5
;
(
originalFunc
,
md5
)
=
self
.
Process
(
oldBlob
.
GetContentStream
(),
methodName
);
methodName
,
start
);
#
region
현재
패치
엔트리
정보
출력
(
추가된
줄
수
,
삭제된
줄
수
,
패치
이전
경로
,
패치
후
경로
)
...
...
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