[转载]显示指定主机的IP地址
文章作者：Betrayed<BR><BR>.386<BR>.model flat, stdcall<BR>option casemap :none<BR><BR>include /masm32/include/windows.inc<BR>include /masm32/include/user32.inc<BR>include /masm32/include/kernel32.inc<BR>include /masm32/include/wsock32.inc<BR>includelib /masm32/lib/wsock32.lib<BR>includelib /masm32/lib/user32.lib<BR>includelib /masm32/lib/kernel32.lib<BR><BR> WndProc PROTO :DWORD,:DWORD,:DWORD,:DWORD<BR> ResolveIp PROTO :DWORD ;proto for helper thread<BR><BR>.data <BR> dlgname db "MAIN",0 <BR> szTitle db "Host/Ip Resolver",0<BR> wsaError db "Error initializing winsock!",0<BR> szReady db "Ready",0<BR> szResolving db "Resolving...",0<BR> szReverse db "Reversing...",0<BR> unknown db "Unknown",0<BR><BR>.data?<BR> wsa WSADATA <?> ;winsock data<BR> hInstance dd ?<BR> szIpaddr db 256 dup(?) <BR> szHostname db 256 dup(?)<BR> hMain dd ?<BR> hResolve dd ?<BR> ThreadId dd ? ;hold the thread id<BR> ip dd ?<BR> <BR>.code<BR><BR>start:<BR><BR> invoke GetModuleHandle, NULL<BR> mov hInstance, eax<BR> invoke WSAStartup,101h,offset wsa ;load winsock version 1.1<BR> .if eax != NULL ;if we did not get a null it worked<BR> invoke MessageBox,NULL,offset wsaError,offset szTitle,MB_OK + MB_ICONSTOP ;error handling<BR> invoke ExitProcess,1 ;quit if no winsock<BR> .endif<BR> invoke DialogBoxParam,hInstance,ADDR dlgname,0,ADDR WndProc,0<BR> invoke ExitProcess,0<BR> <BR>WndProc proc hWin:DWORD,uMsg:DWORD,wParam:DWORD,lParam:DWORD<BR><BR> .if uMsg == WM_INITDIALOG<BR> mov eax,hWin<BR> mov hMain,eax<BR> invoke GetDlgItem,hWin,2000<BR> mov hResolve,eax<BR> .elseif uMsg == WM_COMMAND<BR> .if wParam == 2000<BR> invoke CreateThread,0,0,addr ResolveIp,0,0,addr ThreadId ;call or thread so windows does not freeze<BR> invoke CloseHandle,eax<BR> .endif<BR> xor eax,eax<BR> ret<BR> .elseif uMsg == WM_CLOSE<BR> invoke WSACleanup ;free the winsock.dll<BR> invoke EndDialog,hWin,0 <BR> ret<BR> .endif<BR> xor eax,eax<BR> ret <BR>WndProc endp<BR><BR>ResolveIp proc lParam:DWORD<BR> invoke EnableWindow,hResolve,FALSE ;disable the resolve button<BR> invoke GetDlgItemText,hMain,1001,addr szIpaddr,sizeof szIpaddr ;get the text from the ip box<BR> or eax,eax ;check return<BR> jz ResolveHost ;if 0 jump to resolve host<BR> invoke lstrcmp,addr unknown,addr szIpaddr ;compare return with unknown string<BR> or eax,eax ;check eax<BR> jz ResolveHost ;jmp to resolve host if 0<BR> invoke SetDlgItemText,hMain,3000,addr szReverse ;change the frame text<BR> invoke inet_addr,addr szIpaddr ;converts dotted ip to a in_addr<BR> mov ip,eax ;mov eax into ip<BR> invoke gethostbyaddr,addr ip,4,2 ;gets host info from address info<BR> mov ebx,1000 ;move hostbox id into ebx<BR> or eax,eax ;see if gethost...worked<BR> jz Unresolvable ;if not jump to unresolvable<BR> mov eax,[eax] ;mov the pointer returnt by gethost into eax<BR> or eax,eax ;check return to see if eax contains anything<BR> jz Unresolvable ;if not jump to unresolveable<BR> invoke SetDlgItemText,hMain,1000,eax ;set the info in the host box<BR> jmp endResolve ;jump to the cleanup<BR><BR>Unresolvable: ;label<BR> invoke SetDlgItemText,hMain,ebx,addr unknown ;set unknown text in correct textbox<BR> jmp endResolve ;jump to cleanup<BR><BR>ResolveHost: ;label<BR> invoke SetDlgItemText,hMain,3000,addr szResolving ;change the frame text<BR> invoke GetDlgItemText,hMain,1000,addr szHostname,sizeof szHostname ;get the text from the host textbox<BR> or eax,eax ;see if we got something<BR> jz endResolve ;nothing in either box so do nothing<BR> invoke lstrcmp,addr unknown,addr szHostname ;compare it to are unknown string<BR> or eax,eax ;check for 0<BR> jz endResolve ;if so jump to cleanup<BR> invoke gethostbyname,addr szHostname ;<BR> mov ebx,1001 ;mov the ip text id into ebx<BR> or eax,eax ;check to see if gethost...returned something<BR> jz Unresolvable ;if not jmp to unresolvable<BR> mov eax,[eax+12] ;mov through the hosnet struct<BR> mov eax,[eax] ;again<BR> mov eax,[eax] ;finally to our wanted info<BR> invoke inet_ntoa,eax ;convert it to a dotted ip address<BR> invoke SetDlgItemText,hMain,1001,eax ;set the text<BR> <BR>endResolve: ;label<BR> invoke EnableWindow,hResolve,TRUE ;Re-enable the Resolve button<BR> invoke SetDlgItemText,hMain,3000,addr szReady ;change the frame text<BR> invoke ExitThread,0 ;exit the helper thread<BR>xor eax,eax <BR>ret<BR><BR>ResolveIp endp<BR>end start页:
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