private static int OpenAuthCallbackFromUnmanaged(IntPtr creds, uint ncreds, IntPtr cbdata)
{
// Give back the structure that hold cbdata and the callback target
OpenAuthManagedCB cbAndUserData = (OpenAuthManagedCB)Marshal.PtrToStructure(cbdata, typeof(OpenAuthManagedCB));
int offset = 0;
int credIndex = 0;
ConnectCredential[] cc = new ConnectCredential[ncreds];
// Loop thru credentials and initialize the ConnectCredential array
while (credIndex < ncreds)
{
IntPtr currentCred = MarshalHelper.IntPtrOffset(creds, offset);
ConnectCredential cred = (ConnectCredential)Marshal.PtrToStructure(currentCred, typeof(ConnectCredential));
offset += Marshal.SizeOf(cred);
cc[credIndex] = cred;
credIndex++;
}
// Call the delegate with the ConnectCredential array, this allow the user to answer the result
cbAndUserData.cbManaged(ref cc, cbAndUserData.cbdata);
offset = 0;
credIndex = 0;
// Loop thru ConnectCredential array and copy back to unmanaged memory
while (credIndex < ncreds)
{
IntPtr currentCred = MarshalHelper.IntPtrOffset(creds, offset);
Marshal.StructureToPtr(cc[credIndex], currentCred, true);
offset += Marshal.SizeOf(cc[credIndex]);
credIndex++;
}
return(0);
}
/// <summary>
/// This function should be called first to get a connection to the Hypervisor. If necessary, authentication will be performed fetching credentials via the callback See virConnectOpen for notes about environment variables which can have an effect on opening drivers
/// </summary>
/// <param name="name">URI of the hypervisor</param>
/// <param name="auth">Authenticate callback parameters</param>
/// <param name="flags">Open flags</param>
/// <returns>a pointer to the hypervisor connection or NULL in case of error URIs are documented at http://libvirt.org/uri.html </returns>
public static IntPtr OpenAuth(string name, ref ConnectAuth auth, int flags)
{
// Create a structure that hold cbdata and the callback target
OpenAuthManagedCB cbAndUserData = new OpenAuthManagedCB();
cbAndUserData.cbdata = auth.cbdata;
cbAndUserData.cbManaged = auth.cb;
// Pass the structure as cbdata
IntPtr cbAndUserDataPtr = Marshal.AllocHGlobal(Marshal.SizeOf(cbAndUserData));
Marshal.StructureToPtr(cbAndUserData, cbAndUserDataPtr, true);
// Create the real ConnectAuth structure, it will call OpenAuthCallbackFromUnmanaged via callback
ConnectAuthUnmanaged connectAuth = new ConnectAuthUnmanaged();
connectAuth.cbdata = cbAndUserDataPtr;
connectAuth.cb = OpenAuthCallbackFromUnmanaged;
connectAuth.CredTypes = auth.CredTypes;
return(OpenAuth(name, ref connectAuth, flags));
}
/// <summary>
/// This function should be called first to get a connection to the Hypervisor. If necessary, authentication will be performed fetching credentials via the callback See virConnectOpen for notes about environment variables which can have an effect on opening drivers
/// </summary>
/// <param name="name">URI of the hypervisor</param>
/// <param name="auth">Authenticate callback parameters</param>
/// <param name="flags">Open flags</param>
/// <returns>a pointer to the hypervisor connection or NULL in case of error URIs are documented at http://libvirt.org/uri.html </returns>
public static IntPtr OpenAuth(string name, ref ConnectAuth auth, int flags)
{
// Create a structure that hold cbdata and the callback target
OpenAuthManagedCB cbAndUserData = new OpenAuthManagedCB();
cbAndUserData.cbdata = auth.cbdata;
cbAndUserData.cbManaged = auth.cb;
// Pass the structure as cbdata
IntPtr cbAndUserDataPtr = Marshal.AllocHGlobal(Marshal.SizeOf(cbAndUserData));
Marshal.StructureToPtr(cbAndUserData, cbAndUserDataPtr, true);
// Create the real ConnectAuth structure, it will call OpenAuthCallbackFromUnmanaged via callback
ConnectAuthUnmanaged connectAuth = new ConnectAuthUnmanaged();
connectAuth.cbdata = cbAndUserDataPtr;
connectAuth.cb = OpenAuthCallbackFromUnmanaged;
connectAuth.CredTypes = auth.CredTypes;
return OpenAuth(name, ref connectAuth, flags);
}
