Determine the shared device type in Windows system C program example

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows Xp Pro SP2

Target platform: none, just for learning and fun

Header file: Standard and Windows

Additional library:Windows Platform SDK

Additional project setting: Set project to be compiled as C

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C Code (/TC)

Other info: non-CLR or unmanaged. Need to add netapi32.lib (netapi32.dll) to the project. Click the Project menu->Select the your_project_name Properties... sub menu->Expand the Configuration Properties folder on the left pane->Expand the Linker subfolder->Select the Input subfolder->Select the Additional Dependencies field on the right pane->Click the ... at the end of the field->Type in 'netapi32.lib' in the empty pane->Click the OK button->Click the OK button second time to close the project Properties dialog.

To do: Determine the Windows shared device type programmatically

To show: The various Windows network management functions - sharing resources

// Link to the netapi32.lib...

// The return value of share functions code can be found in Network Management Error Codes in MSDN

// For Win Xp Pro, adjust accordingly for other Windows version

#define _WIN32_WINNT 0x0501

// #define UNICODE - already unicode set through compiler

#include <windows.h>

#include <stdio.h>

#include <lm.h>

int wmain(int argc, TCHAR *argv[])

{

NET_API_STATUS res;

DWORD devType = 0;

size_t sizeInWords = 50;

if(argc < 3)

{

// %ls or %S is OK...

printf("Usage: %ls <server_name> <device_name>\n", argv[0]);

printf("Usage: %ls mypersonal \"E:\\testshare\"\n", argv[0]);

}

else

{

// Call the NetShareCheck() function.

// res = NetShareCheck(argv[1], _wcsupr(argv[2]), &devType);

res = NetShareCheck(argv[1], (LPWSTR)argv[2], &devType);

// If the function succeeds, inform the user.

printf("The res return value is: %u\n", res);

if(res == NERR_Success)

switch(devType)

{

case 0 : printf("Device is shared as type STYPE_DISKTREE - disk drive/folder.");

break;

case 1 : printf("Device is shared as type STYPE_PRINTQ - Print queue.");

break;

case 2 : printf("Device is shared as type STYPE_DEVICE - Communication device.");

break;

case 3 : printf("Device is shared as type STYPE_IPC - Interprocess communication (IPC).");

break;

case 4 : printf("Device is shared as type STYPE_SPECIAL - Special share reserved \

for interprocess communication (IPC$) or \

remote administration of the server (ADMIN$). \

Can also refer to administrative shares such as C$, D$, E$, and so forth.");

break;

case 5 : printf("Device is shared as type STYPE_TEMPORARY - A temporary share.");

break;

}

// Otherwise, print the return error code.

else

{

printf("Something wrong, error: %u\n", res);

perror("The error string ");

}

return 0;

}

Output example:

(This program run at the command prompt)

F:\vc2005project\cplus\debug>cplus

Usage: cplus <server_name> <device_name>

Usage: cplus mypersonal "E:\testshare"

F:\vc2005project\cplus\debug>cplus mypersonal C:\

The res return value is: 0