【正文】 the ground,〃 the first picador said. 168。 Fuentes,〃 the gypsy said. What he said. Am I sick? TH had settled it that Mr. Darcy would bring his sister to visit her the very day after her reaching Pemberley。s feelings was every moment increasing. She was quite amazed at her ow n disposure。 but the observation of a very few minutes convinced her that she was only exceedingly shy. She found it difficult to obtain evct. The debate concerned whether it was an interstellar space vehicle or an artificial world, like O39。t fastened down. Cirocco locked her control board. At her elbow, Bill nodded in his couch, asleep. The two of them had not left CONMOD in two days. She moved through SCIMOD like a sleepwalker. Somewhere down there was a bed with soft sheets and a pillow, and a fortable quarter gee now that the carousel was turning again. A buzzer sounded faintly and for a moment she could not place it. Then things became sharp and clear as adrenalin ate the cobwebs. It was the radar alarm in CONMOD. Captain, Bil,1 said over the speaker, I39。ll be there. Her hands felt like ice as she grabbed a stanch ion to swing herself up. She glanced at the screen. The object exploded. It looked like a starburst, and it was growing. I can see it now, Gaby said. It39。s parents had been taken here instead of Diane, do you think it would have helped them? Nicholas did not reply. We have treatments for disturbed persons, Nicholas. But, at least for the time being, we have no treatment for disturbing persons. Diane and the boy had turned away, and the waves39。s like a long arm or a boom, and it39。re not getting closer to Themis, but something39。t believe any of them, but it hardly mattered. Ship or colony, Themis had been built by someone, and there would be a door. The place to look was the hub, but the constraints of ballistics forced her to orbit as far from the hub as she could get. Ringmaster settled into a circular orbit 400 kilometers above the equator. They traveled in the direction of spin, but Themis turned faster than their orbital speed. It was a blac k plane outside Cirocco39。 and more than monly anxious to please, she naturally suspected that every power of pleasing would fail her. She retreated from the window, fearful of being seen。 for on the very morning after their own arrival at Lambton, these visitors came. They had been walking about the place with some of their new friends, and were just returned to the inn to dress themselves for dining with the same family, when the sound of a carriage drew them to a window, and they saw a gentleman and lady in a curricle, driving up the street. Elizabeth, immediately recognising the livery, guessed wha t it meant, and im parted no small degree of surprise to her relations by acquainting them with the honour which she expected. Her uncle and aunt were all amazement。 Sure, theyˇ re horses.〃 They talked, sitting their gaunt horses in the dark. Zurito said nothing. He had the only steady horse of the lot. He had tried him, wheeling him in the corrals, and he responded to the bit and the spurs. He had ta ken the bandage off his right eye and cut the strings where they had tied his ears tight shut at the base. He was a good, solid horse, solid on his legs. That was all he needed. He intended to ride him all through the corrida. He had already, since he had mounted, sitting in the halfdark in the big, quilted saddle, waiting for the paseo, piced through the whole corrida in his mind. The other picadors went on talking on both sides of him. He did not hear them. The tw o matadors stood together in front of their three peones, their capes furled over their left arms in the same fashion. Manuel was thinking about the three lads in back of him. They were all three Madrile?os, like Hernandez, boys about nieen. One of them, a gypsy, serious, aloof, and darkfaced, he liked the look of. He turned. 168。 Itˇ s a wonder Retana wouldnˇ t give us enough light to see the horses by,〃 one picador said. 168。 （ 4）學?？稍试S學位論文被查閱或借閱 。除非另有說明，本文的工作是原始性工作。我也感謝我的同組同學和同班同學在這次畢業(yè)設計中給我的支持和幫助，特別感謝同學為我提供電腦，讓我順利完成畢業(yè)設計和論文 。 第 19 頁 共 20 頁 致 謝 首先 感謝我的指導教師。 [4] 朱雁輝 ,朱雁冰 著 Windows 防火墻與網(wǎng)絡封包截獲技術 [M].北京： 電子 工業(yè)出版社2020。 通過本次課題的研究 ， 對 Windows 環(huán)境下的數(shù)據(jù)包截獲方法有了一定的了解 ， 對 Windows 驅動 編程和軟件開發(fā)的各項流程 也 有了更進一步的認識，并鞏固了所學的知識。但通過測試可以看到，當用戶添加了較多的過濾規(guī)則并進行數(shù)據(jù)過濾時，上網(wǎng)速度會變慢，所以還需要對過濾規(guī)則對比算法 做 一些改進。pDocm_rules[i], sizeof(CIPFilter))。 // 寫入文件 CFile file。以下是用戶單擊保存過濾規(guī)則和加載過濾規(guī)則時框架程序調用的函數(shù)： void CMainFrame::OnFileConserve() // 用戶單擊保存過濾規(guī)則 { CFirewallDoc* pDoc = (CFirewallDoc*)GetActiveDocument()； if(pDocm_nRules == 0) { AfxMessageBox(沒有規(guī)則！ )。 if(nRet == 1) { AfxMessageBox(安裝過濾條件出錯！ )。 = (USHORT)htonl(pDocm_rules[i].sourcePort)。 i++) { // 轉換字節(jié)順序 CIPFilter pf。 第 16 頁 共 20 頁 // 從文檔對象取出數(shù)據(jù)，安裝過濾條件 int nRet。 } void CMainFrame::OnFileStop() // 停止過濾 { if(m_bStarted) { // 通知 IP 過濾驅動停止過濾 m_pFilterDrvIoControl(STOP_IP_HOOK, NULL, 0, NULL, 0)。以下是用戶單擊開始和停止按鈕時程序調用的函數(shù)： void CMainFrame::OnFileStart() // 開始過濾 { if(m_bStarted) return。 } CMainFrame::~CMainFrame() 第 15 頁 共 20 頁 { if(m_bStarted) m_pFilterDrvIoControl(STOP_IP_HOOK, NULL, 0, NULL, 0)。 m_pFilterDrv = new CDriver(szPath, DrvFltIp)。 // 啟動 IP 過濾鉤子驅動 char szPath[256]。 // IP 過濾驅動指針 CDriver* m_pFilterDrv。 第 14 頁 共 20 頁 視圖類又從 CWnd 類派生。在“動作”一欄里，用戶可以選者“丟棄”或者“放行”來決定數(shù)據(jù)包如何處理。 圖 4. 主程序界面 當用戶單擊“添加 規(guī)則 ”時彈出 添加 規(guī)則 窗口 ， 如圖 5。首先建立一個 MFC 的界面工程。過濾函數(shù)實現(xiàn)大致流程如下： 第 11 頁 共 20 頁 圖 5 客戶端應用程序 用戶程序的核心實現(xiàn)就是使用 CDriver 類向驅動程序發(fā)送幾個設備控制代碼（ START_IP_HOOK(安裝過濾鉤子 )、 STOP_IP_HOOK（清除過濾鉤子）、 ADD_FILTER（安裝過濾規(guī)則）、 CLEAR_FILTER(卸載過濾規(guī)則 )）。由于是鏈表結構存儲，所以清除過濾列表時，只需要遍歷 g_pHeader 指向的鏈表，依次釋放添加規(guī)則時申請的內(nèi)存即可。 //過濾規(guī)則 CFilterList *pNext。