CATempIPBlockList Class Reference

The purpose of this class is storing the IPs of JAP users who tried to hack/attack the payment system. More...

List of all members.

Public Member Functions
	CATempIPBlockList (UINT64 validTimeMillis)
	~CATempIPBlockList ()
SINT32	insertIP (const UINT8 ip[4])
	inserts an IP into the blocklist
SINT32	checkIP (const UINT8 ip[4])
	check whether an IP is blocked
void	setValidTimeMillis (UINT64 millis)
	set the time (in Milliseconds) that each blocked IP should stay valid in the list
UINT32	count ()
Static Private Member Functions
static THREAD_RETURN	cleanupThreadMainLoop (void *param)
	the cleanup thread main loop
Private Attributes
volatile bool	m_bRunCleanupThread
	as long as true the clenaupthread does his job.
CAThread *	m_pCleanupThread
	this thread cleans up the hashtable and removes old entries
UINT64	m_validTimeMillis
	the time that each blocked IP should stay in the List
PTEMPIPBLOCKLIST *	m_hashTable
	the buffer where the entries are stored
CAMutex *	m_pMutex
	Used for locking the datastructure to make it threadsafe.
UINT32	m_iEntries

---

Detailed Description

The purpose of this class is storing the IPs of JAP users who tried to hack/attack the payment system.

Their IP should stay in this block list for a limited time period (e.g. 10 minutes or so). During this time a JAP cannot connect to the mixcascade from this IP.

The implementation uses Mutex locking and is thus threadsafe

Author:

Bastian Voigt <bavoigt@inf.fu-berlin.de>

---

Constructor & Destructor Documentation

CATempIPBlockList::CATempIPBlockList

(

UINT64

validTimeMillis

)

References cleanupThreadMainLoop(), m_bRunCleanupThread, m_hashTable, m_iEntries, m_pCleanupThread, m_pMutex, m_validTimeMillis, CAThread::setMainLoop(), and CAThread::start().

CATempIPBlockList::~CATempIPBlockList

(

)

References CAThread::join(), CAMutex::lock(), m_bRunCleanupThread, m_hashTable, m_pCleanupThread, m_pMutex, _tempipblocklist_t::next, CAMsg::printMsg(), and CAMutex::unlock().

---

Member Function Documentation

SINT32 CATempIPBlockList::checkIP

(

const UINT8

ip[4]

)

check whether an IP is blocked

Return values:

1,if	the IP is blocked
0,if	the IP is not blocked
E_SUCCESS,if	the IP is not blocked
E_UNKNOWN,if	the IP is blocked

References E_SUCCESS, E_UNKNOWN, getcurrentTimeMillis(), _tempipblocklist_t::ip, CAMutex::lock(), m_hashTable, m_iEntries, m_pMutex, _tempipblocklist_t::next, CAMutex::unlock(), and _tempipblocklist_t::validTimeMillis.

Referenced by fm_loopAcceptUsers().

THREAD_RETURN CATempIPBlockList::cleanupThreadMainLoop

(

void *

param

)

[static, private]

the cleanup thread main loop

References BEGIN_STACK, CLEANUP_THREAD_SLEEP_INTERVAL, FINISH_STACK, getcurrentTimeMillis(), INIT_STACK, CAMutex::lock(), m_bRunCleanupThread, m_hashTable, m_iEntries, m_pMutex, _tempipblocklist_t::next, CAMsg::printMsg(), sSleep(), THREAD_RETURN_SUCCESS, CAMutex::unlock(), and _tempipblocklist_t::validTimeMillis.

Referenced by CATempIPBlockList().

UINT32 CATempIPBlockList::count

(

)

References m_iEntries.

Referenced by fm_loopAcceptUsers().

SINT32 CATempIPBlockList::insertIP

(

const UINT8

ip[4]

)

inserts an IP into the blocklist

Return values:

E_SUCCESS	if successful
E_UNKNOWN	if IP was already in blocklist

References E_SUCCESS, E_UNKNOWN, getcurrentTimeMillis(), _tempipblocklist_t::ip, CAMutex::lock(), m_hashTable, m_iEntries, m_pMutex, m_validTimeMillis, _tempipblocklist_t::next, CAMutex::unlock(), and _tempipblocklist_t::validTimeMillis.

Referenced by CAFirstMix::doUserLogin_internal(), and fm_loopAcceptUsers().

void CATempIPBlockList::setValidTimeMillis

(

UINT64

millis

)

set the time (in Milliseconds) that each blocked IP should stay valid in the list

---

Member Data Documentation

volatile bool CATempIPBlockList::m_bRunCleanupThread [private]

as long as true the clenaupthread does his job.

If false the thread will exit.

Referenced by CATempIPBlockList(), cleanupThreadMainLoop(), and ~CATempIPBlockList().

PTEMPIPBLOCKLIST* CATempIPBlockList::m_hashTable [private]

the buffer where the entries are stored

Referenced by CATempIPBlockList(), checkIP(), cleanupThreadMainLoop(), insertIP(), and ~CATempIPBlockList().

UINT32 CATempIPBlockList::m_iEntries [private]

Referenced by CATempIPBlockList(), checkIP(), cleanupThreadMainLoop(), count(), and insertIP().

CAThread* CATempIPBlockList::m_pCleanupThread [private]

this thread cleans up the hashtable and removes old entries

Referenced by CATempIPBlockList(), and ~CATempIPBlockList().

CAMutex* CATempIPBlockList::m_pMutex [private]

Used for locking the datastructure to make it threadsafe.

Referenced by CATempIPBlockList(), checkIP(), cleanupThreadMainLoop(), insertIP(), and ~CATempIPBlockList().

UINT64 CATempIPBlockList::m_validTimeMillis [private]

the time that each blocked IP should stay in the List

Referenced by CATempIPBlockList(), and insertIP().