Sometime you are in a situation where you want to programmatically share a path and unshared it after use. This was a challenge I was faced with while working on an application that accepted user input, and then it would trigger a different process on another terminal. The second application would then process and save the output on a path selected by the user. After going through the MSDN and a few google searches, here is what I developed
This article demonstrates how to share a directory and set NTFS permissions on it. start by importing the following library and namespaces.
using
System.Security.Permissions;
using
System.Security;
using
System.Security.AccessControl;
using
System.Security.Principal;
Create an instance of the group or user you want to share to, in my case here I want to share to everyone.
NTAccount ntAccount = new NTAccount("Everyone");
Get the group’s Security Identifier (SID).
SecurityIdentifier oGrpSID = (SecurityIdentifier)ntAccount.Translate(typeof(SecurityIdentifier));
byte[] utenteSIDArray = new byte[oGrpSID.BinaryLength];
oGrpSID.GetBinaryForm(utenteSIDArray, 0);
Create a trustee instance from the group SID above
ManagementObject oGrpTrustee = new ManagementClass(new ManagementPath("Win32_Trustee"), null);
oGrpTrustee["Name"] = "Everyone";
oGrpTrustee["SID"] = utenteSIDArray;
Create an Access Control Entry object. Give full access to the folder and allow sub folder to inherit
ManagementObject oGrpACE = new ManagementClass(new ManagementPath("Win32_Ace"), null);
oGrpACE["AccessMask"] = 2032127;//Full access
oGrpACE ["AceFlags"] = AceFlags.ObjectInherit | AceFlags.ContainerInherit; //propagate the AccessMask to the subfolders
oGrpACE["AceType"] = AceType.AccessAllowed;
oGrpACE["Trustee"] = oGrpTrustee;
Create a security descriptor; this will contain the security information for the group
ManagementObject oGrpSecurityDescriptor= new ManagementClass(new ManagementPath("Win32_SecurityDescriptor"), null);
oGrpSecurityDescriptor["ControlFlags"] = 4; //SE_DACL_PRESENT
oGrpSecurityDescriptor["DACL"] = new object[] { oGrpACE };
Lastly Share the directory in question and upgrade the security permissions. In my case is C:\testShare\, the Share Name is Test Share
string FolderPath=”c:\testshare\”;
string ShareName=”Test Share”;
string Description=”This save output”;
ManagementClass mc = new ManagementClass("win32_share");
ManagementBaseObject inParams = mc.GetMethodParameters("Create");
inParams["Description"] = Description;
inParams["Name"] = ShareName;
inParams["Path"] = FolderPath;
inParams["Type"] = 0x0; //Disk Drive
inParams["MaximumAllowed"] = null;
inParams["Password"] = null;
inParams["Access"] = oGrpSecurityDescriptor;
ManagementBaseObject outParams = mc.InvokeMethod("Create", inParams, null);
Unshare the Directory
Create an Object to query the WMI Win32_Share API for shared files
ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from win32_share");
ManagementBaseObject outParams;
ManagementClass mc = new ManagementClass("Win32_Share"); //for local shares
Loop through all the local shares,
foreach (ManagementObject share in searcher.Get())
{
string type = share["Type"].ToString();
if (type == "0") // Check if it’s a DiskDrive {
string path = share["Name"].ToString(); //getting share path name
if (path == "testshare"){ //if it’s the testshare folder
outParams = share.InvokeMethod("delete", null, null); //Delete the shares
if ((uint)(outParams.Properties["ReturnValue"].Value) != 0)
{
// unsuccessful do something
}
else
{
// unsharing successful do something
}
}
}
}
