mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
175 lines
7.7 KiB
175 lines
7.7 KiB
Program Interface for C2Config Dll's
|
|
|
|
Written: 7-Feb-95
|
|
Revisions: none
|
|
|
|
Overview
|
|
|
|
The C2Config utility provides an extensible interface for adding
|
|
additional security functions to be displayed and controlled from
|
|
the C2Config list. These functions are provided in the form
|
|
of a dynamic-link library (DLL) that is referenced in the
|
|
C2CONFIG.INF file. This file describes the interface requirements
|
|
for these additional functions.
|
|
|
|
A C2Config DLL must include the C2DLL.H file for the structure
|
|
definitions used between the main application program and the DLL.
|
|
The DLL must also supply the following exported entry points for use
|
|
by the application (the actual function names may be defined by the
|
|
DLL developer). The following function names will be used in this
|
|
description when referencing the DLL functions.
|
|
|
|
GetStatusFunction
|
|
UserInterfaceFunction
|
|
SetStatusFunction
|
|
|
|
The actual function names defined in the DLL must be listed in the
|
|
C2CONFIG.INF file for them to be recognized by the application.
|
|
|
|
GetStatusFunction
|
|
|
|
When the application is first started and whenever the Refresh
|
|
display menu item is selected, the GetStatusFunction for each
|
|
item is called to determine the current status of that item.
|
|
The application calls the function, passing the pointer to a
|
|
C2DLL_DATA data structure initialized as follows:
|
|
|
|
lActionCode = 0
|
|
lActionValue = 0
|
|
hWnd = window handle to main app window
|
|
lC2Compliance = C2DLL_NOT_SECURE;
|
|
szItemName = ItemName as read from C2CONFIG.INF file
|
|
szStatusName = Empty String (all null chars) on first
|
|
call, previous status on all subsequent
|
|
calls
|
|
|
|
The GetStatusFunction then determines the current state of the
|
|
item it is responsible for and fills in the following fields
|
|
of the C2DLL_DATA structure whose pointer was passed in the
|
|
argument list:
|
|
|
|
lActionCode = (not used)
|
|
lActionValue = (not used)
|
|
hWnd = (not changed)
|
|
lC2Compliance = Current compliance value
|
|
szItemName = (not changed)
|
|
szStatusName = string describing current status of this
|
|
item
|
|
|
|
After detecting the current status of the security item and
|
|
filling in the C2DLL_DATA structure, the function returns the
|
|
WIN32 error status value describing the success or failure of the
|
|
function call. The data returned will be assumed valid only if
|
|
the return status is ERROR_SUCCESS;
|
|
|
|
UserInterfaceFunction
|
|
|
|
The User Interface Function is called when the user double-clicks
|
|
or otherwise selects a security item from the list displayed in
|
|
the main application window. The purpose of this function is to
|
|
allow the user to change the current state of the selected item.
|
|
|
|
When the item is selected, the function is called, passing a
|
|
pointer to the C2DLL_DATA structure as the only argument. The
|
|
fields in the structure are initialized as follows:
|
|
|
|
lActionCode = 0
|
|
lActionValue = 0
|
|
hWnd = the window handle of the main app window
|
|
lC2Compliance = the current compliance value as returned by
|
|
the last GetStatusFunction call
|
|
szItemName = the name string for this item as read from
|
|
the C2CONFIG.INF file
|
|
szStatusName = the string describing the current status of
|
|
this item as returned by the last call to
|
|
the GetStatusFunction
|
|
|
|
The Display function will present the necessary user interface to
|
|
the user for their input and then fill the following fields of
|
|
the C2DLL_DATA block referenced by the pointer passed in the
|
|
argument list:
|
|
|
|
lActionCode = code describing action to take in order to
|
|
perform task selected by user.
|
|
0 == no change or no action
|
|
lActionValue = value to be used, if necessary, if the
|
|
lActionCode is not 0
|
|
hWnd = (not changed)
|
|
lC2Compliance = (not changed)
|
|
szItemName = (not changed)
|
|
szStatusName = (not changed)
|
|
|
|
The UserInterfaceFunction returns a Win32 error status value as
|
|
the return value of the function to indicate if the function was
|
|
successful or not. If the return code is not ERROR_SUCCESS, then
|
|
the returned data is ignored.
|
|
|
|
SetStatusFunction
|
|
|
|
If the lActionCode field in the data structure returned by the
|
|
UserInterfaceFunction is not 0, then the SetStatusFunction is
|
|
called. The C2DLL_DATA structure passed to the SetStatusFunction
|
|
is unchanged from the data returned by the UserInterfaceFunction.
|
|
|
|
The SetStatusFunction performs the action defined in the
|
|
lActionCode field of the structure, using the lActionValue
|
|
field as necessary. If the status of the item is changed, then
|
|
this routine must update the following fields in the data
|
|
structure.
|
|
|
|
lActionCode = set to 0
|
|
lActionValue = set to 0
|
|
hWnd = (not changed)
|
|
lC2Compliance = set to the current state (as a result of
|
|
the change)
|
|
szItemName = (not changed)
|
|
szStatusName = set to the current state (as a result of
|
|
the change)
|
|
|
|
The SetStatusFunction returns a Win32 error status code to
|
|
indicate the success or failure of the function, and the list
|
|
entry in the main application window is updated to show the
|
|
current status of this item.
|
|
|
|
C2CONFIG.INF
|
|
|
|
Each entry in the main application window is described in the
|
|
C2CONFIG.INF file. The file consists of a single section under the
|
|
[C2 Security Items] section heading. Under that section, each
|
|
entry consists of the following elements:
|
|
|
|
Item Name = this is the string to be displayed in the
|
|
application window under the "Security
|
|
Feature" heading. Make sure the text is
|
|
not so long as to be truncated in the
|
|
display.
|
|
|
|
DLL = the filename of the DLL that contains the
|
|
functions that follow in the entry.
|
|
The DLL must be located in one of the
|
|
following directories in order to be
|
|
recognized by the application:
|
|
|
|
The current directory
|
|
The WINDOWS (%systemroot%) directory
|
|
The SYSTEM (%systemroot%\SYSTEM32) directory
|
|
The directory containing C2CONFIG.EXE
|
|
a directory in the "Path"
|
|
|
|
QueryFn = the exported function name found in the DLL
|
|
file mentioned above that performs the
|
|
GetStatusFunction service described above.
|
|
|
|
SetFn = the exported function name found in the DLL
|
|
file mentioned above that performs the
|
|
SetStatusFunction service described above.
|
|
|
|
UserInterfaceFn = the exported function name found in the
|
|
DLL file mentioned above that performs the
|
|
UserInterfaceFunction service described above.
|
|
|
|
RebootIfChanged = "1" if changing this feature requires the
|
|
system to be restarted in order for the
|
|
change to take effect. Otherwise, this value
|
|
should be a "0".
|
|
|