Database Search
If you can't find the information using the categories below, post a question over in our WinBatch Tech Support Forum.
TechHome
DllCall Information
- Beep
- Booted UEFI or BIOS
- Calling HLLAPI
- Change Screen Resolution to standard size
- Change Target of My Documents Folder
- Check for Input Idle - No User Input
- Create and Release Mutex
- Crypto API Functions
- Determine XP Home vs XP Pro using GetVersionEx API
- Direct Memory Copy - RtlCopyMappedMemory
- DLL Pointer Problem
- DllCall Additional Information
- DllCall additional info
- DllCall Example from User
- DllCall to CP5DLL32 DLL
- DllCall to GetExitCodeProcess
- DllCall To GetFileAttributesEx
- DllCall With Callback Example
- DllCall with Structures
- DllCalls to Dll with Double as Passed Param
- DllLastError GetLastError Differences
- DllStructAlloc Example
- Dynamically Change Proxy Settings for an Existing IE Session
- Error 1379 - DllCall - Bad Parameter List Error
- Find a DFS Target Given a DFS Link
- Float as a passed param to DLLCALL
- Font Installation
- FreeImage DllCalls
- General DllCall Information
- Get Username via DllCall
- Get Window with Focus
- Get Windows System Error String
- getprocesstimes_udf
- How To Call Windows API Functions
- How to Get Encrypted Attribute from a Directory
- How to Mount a Local Directory as a Drive Letter
- IntControl 32 and Structures
- Keep XP from Going Into Standby
- Link to windows API documentation
- Native WIFI API
- NTFS File Time Stamps
- Open GL Example
- OpenGL Drawing Example
- Pass Strings by Reference with DLLCall using Binary Buffers
- Reading Pixels in an Image
- Refresh Everything By Telling Windows an Association has Changed
- Shell LightWeight API calls to ColorRGBToHLS and ColorHLSToRGB
- SHQueryUserNotificationState
- Stamp text on bitmaps
- Turn Off Monitor
- Using Dll Created in C to Pass Address
- Using lp binary for DLL callback lpstrs
- VB Dll Usage with DllCall
- Why is BinaryEODset Needed
- WinSHow No Activate
- WM_SetIcon Message to Change Icon
Can't find the information you are looking for here? Then leave a message over on our WinBatch Tech Support Forum.
IntControl 32 and Pointers to Structures
Keywords: IntControl 32 Byte Long Num2Char DsGetDcName Binary Buffer Structure _DOMAIN_CONTROLLER_INFOA Pointer
Update:
A more complete dsGetDcName code sample has been posted here: http://techsupt.winbatch.com/webcgi/webbatch.exe?techsupt/nftechsupt.web+WIL~Extenders/ADSI/Samples~from~Users+DsGetDcName.txt
Question:
Trying to execute the API call DsGetDcName and it is working but I am having trouble with the return info and the binary buffer. Everything I can find seems to say I am doing this somewhat correctly, except that the result is gibberish. It would be great if someone could tell me what I am missing here. The 'pause' title has the return value for the function call itself, and if I use a non-existent domain, or a 'flat' name I get the proper returns (1212 or 1355). But if I use a domain I am trying to get a DC for, I get no error, but can't make out the returned binary...
#DefineFunction fGetDC(sDomain) ;http://msdn.microsoft.com/en-us/library/windows/desktop/ms675983(v=vs.85).aspx
;Flags to passed to DsGetDcName
DS_FORCE_REDISCOVERY =xHex(00000001)
DS_DIRECTORY_SERVICE_REQUIRED =xHex(00000010)
DS_DIRECTORY_SERVICE_PREFERRED =xHex(00000020)
DS_GC_SERVER_REQUIRED =xHex(00000040)
DS_PDC_REQUIRED =xHex(00000080)
DS_BACKGROUND_ONLY =xHex(00000100)
DS_IP_REQUIRED =xHex(00000200)
DS_KDC_REQUIRED =xHex(00000400)
DS_TIMESERV_REQUIRED =xHex(00000800)
DS_WRITABLE_REQUIRED =xHex(00001000)
DS_GOOD_TIMESERV_PREFERRED =xHex(00002000)
DS_AVOID_SELF =xHex(00004000)
DS_ONLY_LDAP_NEEDED =xHex(00008000)
DS_IS_FLAT_NAME =xHex(00010000)
DS_IS_DNS_NAME =xHex(00020000)
DS_TRY_NEXTCLOSEST_SITE =xHex(00040000)
DS_DIRECTORY_SERVICE_6_REQ =xHex(00080000) ;ORIGINAL NAME "DS_DIRECTORY_SERVICE_6_REQUIRED" renamed since WB does not support vars longer than 30 chars
DS_WEB_SERVICE_REQUIRED =xHex(00100000)
DS_DIRECTORY_SERVICE_8_REQ =xHex(00200000) ;ORIGINAL NAME "DS_DIRECTORY_SERVICE_8_REQUIRED" renamed since WB does not support vars longer than 30 chars
DS_RETURN_DNS_NAME =xHex(40000000)
DS_RETURN_FLAT_NAME =xHex(80000000)
;// Structure returned from DsGetDcName
;
;typedef struct _DOMAIN_CONTROLLER_INFOA { ; total size = 48bytes
; LPSTR DomainControllerName; as lpStr, width: 4, offset: 0
; LPSTR DomainControllerAddress; as lpStr, width: 4, offset: 4
; ULONG DomainControllerAddressType; as long, width: 4, offset: 8
; GUID DomainGuid; as int, width: 16, offset: 12
; LPSTR DomainName; as lpStr, width: 4, offset: 28
; LPSTR DnsForestName; as lpStr, width: 4, offset: 32
; ULONG Flags; as long, width: 4, offset: 36
; LPSTR DcSiteName; as lpStr, width: 4, offset: 40
; LPSTR ClientSiteName; as lpStr, width: 4, offset: 44
;} DOMAIN_CONTROLLER_INFOA, *PDOMAIN_CONTROLLER_INFOA;
;dllcall return values
;http://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
;http://msdn.microsoft.com/en-us/library/windows/desktop/ms681383(v=vs.85).aspx
ERROR_SUCCESS =xHex(0) ;0
ERROR_INVALID_DOMAINNAME =xHex("4BC") ;1212
ERROR_INVALID_FLAGS =xHex("3EC") ;1004
ERROR_NOT_ENOUGH_MEMORY =xHex(8) ;8
ERROR_NO_SUCH_DOMAIN =xHex("54B") ;1355
cbSize=48 ;callback structure size calculated above
_DOMAIN_CONTROLLER_INFOA=BinaryAlloc(cbSize)
BinaryEodSet(_DOMAIN_CONTROLLER_INFOA, cbSize)
dll_NetAPI32=DllLoad(DirWindows(1):"Netapi32.dll")
ret_dsGetDCName=DllCall(dll_NetAPI32, word:"DsGetDcNameA", lpNull, lpstr:sDomain, lpNull, lpNull, long:DS_IS_DNS_NAME, lpBinary:_DOMAIN_CONTROLLER_INFOA)
sDC=BinaryPeekStr(_DOMAIN_CONTROLLER_INFOA, 0, 4)
DllFree(dll_NetAPI32)
BinaryFree(_DOMAIN_CONTROLLER_INFOA)
Pause("Function Return: ":ret_dsGetDCName, "Domain Controller: ":sDC)
Return(ret_dsGetDCName)
#EndFunction
AddExtender("wilx44i.dll")
fGetDC(AskLine("Get DC Function", "Enter full domain name:", "", 0))
Exit
Answer:
DsGetDcName's final parameter is a pointer to a PDOMAIN_CONTROLLER_INFO value that receives a pointer to a DOMAIN_CONTROLLER_INFO structure that contains data about the domain controller selected. This structure is allocated by DsGetDcName. The caller must free the structure using the NetApiBufferFree function when it is no longer required.You will need to use IntControl 32 to get the structure's first element string pointer. Here is the revied code:
#DefineFunction fGetDC(sDomain) ;http://msdn.microsoft.com/en-us/library/windows/desktop/ms675983(v=vs.85).aspx
;Flags to passed to DsGetDcName
DS_FORCE_REDISCOVERY =xHex(00000001)
DS_DIRECTORY_SERVICE_REQUIRED =xHex(00000010)
DS_DIRECTORY_SERVICE_PREFERRED =xHex(00000020)
DS_GC_SERVER_REQUIRED =xHex(00000040)
DS_PDC_REQUIRED =xHex(00000080)
DS_BACKGROUND_ONLY =xHex(00000100)
DS_IP_REQUIRED =xHex(00000200)
DS_KDC_REQUIRED =xHex(00000400)
DS_TIMESERV_REQUIRED =xHex(00000800)
DS_WRITABLE_REQUIRED =xHex(00001000)
DS_GOOD_TIMESERV_PREFERRED =xHex(00002000)
DS_AVOID_SELF =xHex(00004000)
DS_ONLY_LDAP_NEEDED =xHex(00008000)
DS_IS_FLAT_NAME =xHex(00010000)
DS_IS_DNS_NAME =xHex(00020000)
DS_TRY_NEXTCLOSEST_SITE =xHex(00040000)
DS_DIRECTORY_SERVICE_6_REQ =xHex(00080000) ;ORIGINAL NAME "DS_DIRECTORY_SERVICE_6_REQUIRED" renamed since WB does not support vars longer than 30 chars
DS_WEB_SERVICE_REQUIRED =xHex(00100000)
DS_DIRECTORY_SERVICE_8_REQ =xHex(00200000) ;ORIGINAL NAME "DS_DIRECTORY_SERVICE_8_REQUIRED" renamed since WB does not support vars longer than 30 chars
DS_RETURN_DNS_NAME =xHex(40000000)
DS_RETURN_FLAT_NAME =xHex(80000000)
;// Structure returned from DsGetDcName
;
;typedef struct _DOMAIN_CONTROLLER_INFOA { ; total size = 48bytes
; LPSTR DomainControllerName; as lpStr, width: 4, offset: 0
; LPSTR DomainControllerAddress; as lpStr, width: 4, offset: 4
; ULONG DomainControllerAddressType; as long, width: 4, offset: 8
; GUID DomainGuid; as int, width: 16, offset: 12
; LPSTR DomainName; as lpStr, width: 4, offset: 28
; LPSTR DnsForestName; as lpStr, width: 4, offset: 32
; ULONG Flags; as long, width: 4, offset: 36
; LPSTR DcSiteName; as lpStr, width: 4, offset: 40
; LPSTR ClientSiteName; as lpStr, width: 4, offset: 44
;} DOMAIN_CONTROLLER_INFOA, *PDOMAIN_CONTROLLER_INFOA;
;typedef struct _DOMAIN_CONTROLLER_INFOA { ; total size = 1660bytes
; LPSTR DomainControllerName; as lpStr, width: 256, offset: 0
; LPSTR DomainControllerAddress; as lpStr, width: 256, offset: 255
; ULONG DomainControllerAddressType; as long, width: 4, offset: 512
; GUID DomainGuid; as int, width: 16, offset: 516
; LPSTR DomainName; as lpStr, width: 256, offset: 632
; LPSTR DnsForestName; as lpStr, width: 256, offset: 888
; ULONG Flags; as long, width: 4, offset: 1144
; LPSTR DcSiteName; as lpStr, width: 256, offset: 1148
; LPSTR ClientSiteName; as lpStr, width: 256, offset: 1404
;} DOMAIN_CONTROLLER_INFOA, *PDOMAIN_CONTROLLER_INFOA;
;dllcall return values
;http://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
;http://msdn.microsoft.com/en-us/library/windows/desktop/ms681383(v=vs.85).aspx
ERROR_SUCCESS =xHex(0) ;0
ERROR_INVALID_DOMAINNAME =xHex("4BC") ;1212
ERROR_INVALID_FLAGS =xHex("3EC") ;1004
ERROR_NOT_ENOUGH_MEMORY =xHex(8) ;8
ERROR_NO_SUCH_DOMAIN =xHex("54B") ;1355
hppDC = BinaryAlloc(4)
dll_NetAPI32=DllLoad(DirWindows(1):"Netapi32.dll")
ret_dsGetDCName=DllCall(dll_NetAPI32, long:"DsGetDcNameA", lpNull, lpstr:sDomain, lpNull, lpNull, long:DS_RETURN_DNS_NAME, lpbinary:hppDC) ;;DS_IS_FLAT_NAME DS_RETURN_DNS_NAME
sDc = ""
ppDC = BinaryPeek4( hppDC, 0)
pStr = IntControl(32,ppDC, "LONG", 0,0) ; Structure's first element string pointer here.
cValue = IntControl(32, pStr , "BYTE", 0,0)
While cValue
sDc = sDc:Num2Char(cValue)
pStr = pStr + 1
cValue = IntControl(32,pStr, "BYTE", 0,0)
EndWhile
DllCall(dll_NetAPI32, long:"NetApiBufferFree", long:ppDC)
BinaryFree(hppDC)
DllFree(dll_NetAPI32)
Pause("Function Return: ":ret_dsGetDCName, "Domain Controller: ":sDC)
Return(ret_dsGetDCName)
#EndFunction
AddExtender("wilx44i.dll")
fGetDC(AskLine("Get DC Function", "Enter full domain name:", "", 0))
Exit
Article ID: W17792
Filename: IntControl 32 and Structures.txt
File Created: 2014:07:18:09:50:36
Last Updated: 2014:07:18:09:50:36