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Enumerate Shared Folders

Posted on 2003-10-30
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Last Modified: 2010-04-05
Good day.
I need to know how to list shared folders on a computer that I am connected over LAN to, given its IP or machine name.

Thanks ahead.
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Question by:duke_n
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2 Comments
 
LVL 17

Accepted Solution

by:
Wim ten Brink earned 1200 total points
ID: 9656752
program GetNetShares;

{$APPTYPE CONSOLE}

uses
  Windows, SysUtils;

const
  NERR_Success = 0; // Success

type
  NET_API_STATUS = DWORD;
  PShare_Info_0 = ^TShare_Info_0;
  TShare_Info_0 = record
    shi0_netname: PWideChar;
  end;
  PShare_Info_0_Arr = ^TShare_Info_0_Arr;
  TShare_Info_0_Arr = array[0..MaxInt div SizeOf(TShare_Info_0) - 1] of TShare_Info_0;
  PShare_Info_1 = ^TShare_Info_1;
  TShare_Info_1 = record
    shi1_netname: PWideChar;
    shi1_type: DWORD;
    shi1_remark: PWideChar;
  end;
  PShare_Info_1_Arr = ^TShare_Info_1_Arr;
  TShare_Info_1_Arr = array[0..MaxInt div SizeOf(TShare_Info_1) - 1] of TShare_Info_1;
  PShare_Info_2 = ^TShare_Info_2;
  TShare_Info_2 = record
    shi2_netname: PWideChar;
    shi2_type: DWORD;
    shi2_remark: PWideChar;
    shi2_permissions: DWORD;
    shi2_max_uses: DWORD;
    shi2_current_uses: DWORD;
    shi2_path: PWideChar;
    shi2_passwd: PWideChar;
  end;
  PShare_Info_2_Arr = ^TShare_Info_2_Arr;
  TShare_Info_2_Arr = array[0..MaxInt div SizeOf(TShare_Info_2) - 1] of TShare_Info_2;
  PShare_Info_502 = ^TShare_Info_502;
  TShare_Info_502 = record
    shi502_netname: PWideChar;
    shi502_type: DWORD;
    shi502_remark: PWideChar;
    shi502_permissions: DWORD;
    shi502_max_uses: DWORD;
    shi502_current_uses: DWORD;
    shi502_path: PWideChar;
    shi502_passwd: PWideChar;
    shi502_reserved: DWORD;
    shi502_security_descriptor: PSECURITY_DESCRIPTOR;
  end;
  PShare_Info_1004 = ^TShare_Info_1004;
  TShare_Info_1004 = record
    shi1004_remark: PWideChar;
  end;
  PShare_Info_1006 = ^TShare_Info_1006;
  TShare_Info_1006 = record
    shi1006_max_uses: DWORD;
  end;
  PShare_Info_1501 = ^TShare_Info_1501;
  TShare_Info_1501 = record
    shi1501_reserved: DWORD;
    shi1501_security_descriptor: PSECURITY_DESCRIPTOR;
  end;

function NetShareEnum(servername: PWideChar; level: DWORD; var buf: Pointer; prefmaxlen: DWORD; var entriesread: DWORD; var totalentries: DWORD; var resume_handle: DWORD): NET_API_STATUS; stdcall; external 'netapi32.dll';

function NetShareGetInfo(servername: PWideChar; netname: PWideChar; level: DWORD; var buf: Pointer): NET_API_STATUS; stdcall; external 'netapi32.dll';

function NetApiBufferFree(P: Pointer): NET_API_STATUS; stdcall; external 'netapi32.dll';

var
  Server: PWideChar;
  Buffer, Loop: PShare_Info_0;
  Buf502: PShare_Info_502;
  NetResult: DWORD;
  entriesread: DWORD;
  totalentries: DWORD;
  resume_handle: DWORD;
  I: Integer;
begin
  if (ParamCount = 0) then begin
    Server := nil;
  end
  else begin
    Server := PWideChar(WideString(ParamStr(1)));
  end;
  entriesread := 0;
  totalentries := 0;
  resume_handle := 0;
  NetResult := NetShareEnum(Server, 0, Pointer(Buffer), DWORD(-1), entriesread, totalentries, resume_handle);
  if (NetResult = NERR_Success) then begin
    Loop := Buffer;
    WriteLn('Entries read: ', entriesread);
    for I := 1 to entriesread do begin
      WriteLn('Name: ', string(Loop.shi0_netname));
      try
        NetResult := NetShareGetInfo(Server, Loop.shi0_netname, 502, Pointer(Buf502));
        if (NetResult = NERR_Success) then begin
          WriteLn('* Net name: ', string(Buf502.shi502_netname));
          WriteLn('* Type: ', Buf502.shi502_type);
          WriteLn('* Remark: ', string(Buf502.shi502_remark));
          WriteLn('* Permissions: ', Buf502.shi502_permissions);
          WriteLn('* Max uses: ', Buf502.shi502_max_uses);
          WriteLn('* Current uses: ', Buf502.shi502_current_uses);
          WriteLn('* Path: ', string(Buf502.shi502_path));
          WriteLn('* Password: ', string(Buf502.shi502_passwd));
          WriteLn('* Reserved: ', Buf502.shi502_reserved);
        end
        else begin
          WriteLn('* Error: ', SysErrorMessage(NetResult));
        end;
        NetApiBufferFree(Buf502);
      except on E: Exception do WriteLn('* Error: ', E.Message);
      end;
      WriteLn;
      Inc(Loop);
    end;
    NetApiBufferFree(Buffer);
  end;
end.

One single DLL executing what you want. ParamStr(1) should contain the name of the server. Use
GetNetShares <Server>
to execute, replacing <Server> with the server name.
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Author Comment

by:duke_n
ID: 9658604
This is great.
Thanks a lot.
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