Source code of Windows XP (NT5)
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/*++
Copyright (c) 1994 Microsoft Corporation
Module Name:
Sharpath.H
Abstract:
display message box and share path
Author:
Bob Watson (a-robw)
Revision History:
17 Feb 94 Written
--*/
//
// Windows Include Files
//
#include <windows.h>
#include <stdio.h>
#include <malloc.h>
#include <tchar.h> // unicode macros
#include <lmcons.h> // lanman API constants
#include <lmerr.h> // lanman error returns
#include <lmshare.h> // sharing API prototypes
//
// app include files
//
#include "otnboot.h"
#include "otnbtdlg.h"
#define NCDU_MSG_SHARE_DIR (WM_USER + 101)
static PSPS_DATA pspData; // path & share info passed in
PSECURITY_DESCRIPTOR
GetShareSecurityDescriptor (
VOID
)
/*++
Routine Description:
Allocates, and initializes a security descriptor for the
share point created by the app. The security descriptor
contains two ACE's
Domain Admins: Full Control
Everyone: Read only
Arguments:
None
Return Value:
Address of an initialized security descriptor of all went OK
a Null pointer if an error occurred (which gives everyone Full Control)
--*/
{
PSECURITY_DESCRIPTOR pSD = NULL;
PSID psidAdmins = NULL;
PSID psidWorld = NULL;
PSID psidDomainAdmins = NULL;
BOOL bValidSd = TRUE;
PACL pACL = NULL;
DWORD dwAclSize = 0;
DWORD dwError = ERROR_SUCCESS;
DWORD dwSidLength = 0;
DWORD dwDomainNameLength = 0;
SID_IDENTIFIER_AUTHORITY siaAdmins = SECURITY_NT_AUTHORITY;
SID_IDENTIFIER_AUTHORITY siaWorld = SECURITY_WORLD_SID_AUTHORITY;
LPTSTR szDomainName;
SID_NAME_USE snu;
// create an empty Security Descriptor
pSD = GlobalAlloc (GPTR, SMALL_BUFFER_SIZE);
if (pSD != NULL) {
if (InitializeSecurityDescriptor (pSD, SECURITY_DESCRIPTOR_REVISION)) {
// create the Admin SID
if (AllocateAndInitializeSid (&siaAdmins,
2,
SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS,
0, 0, 0, 0, 0, 0, &psidAdmins)) {
// create the World SID
if (AllocateAndInitializeSid(&siaWorld,
1,
SECURITY_WORLD_RID,
0, 0, 0, 0, 0, 0, 0, &psidWorld)) {
psidDomainAdmins = GlobalAlloc (GPTR, SMALL_BUFFER_SIZE);
if (psidDomainAdmins != NULL) {
dwSidLength = SMALL_BUFFER_SIZE;
}
szDomainName = GlobalAlloc (GPTR, MAX_PATH_BYTES);
if (szDomainName != NULL) {
dwDomainNameLength = MAX_PATH;
}
LookupAccountName (
pspData->szServer,
GetStringResource (CSZ_DOMAIN_ADMINS),
psidDomainAdmins,
&dwSidLength,
szDomainName,
&dwDomainNameLength,
&snu);
// allocate and initialize the ACL;
dwAclSize = sizeof(ACL) +
(3 * sizeof(ACCESS_ALLOWED_ACE)) +
GetLengthSid(psidAdmins) +
GetLengthSid(psidWorld) +
(psidDomainAdmins != NULL ? GetLengthSid(psidDomainAdmins) : 0) -
sizeof(DWORD);
pACL = GlobalAlloc (GPTR, dwAclSize);
if(pACL == NULL) {
// free local structures
FreeSid (psidAdmins);
FreeSid (psidWorld);
FREE_IF_ALLOC (pSD);
return NULL;
}
InitializeAcl (pACL, dwAclSize, ACL_REVISION);
if (psidDomainAdmins != NULL) {
// add the Domain Admin ACEs
AddAccessAllowedAce (pACL, ACL_REVISION,
GENERIC_ALL, psidDomainAdmins);
}
// add the Admin ACEs
AddAccessAllowedAce (pACL, ACL_REVISION,
GENERIC_ALL, psidAdmins);
// add the World ACE
AddAccessAllowedAce (pACL, ACL_REVISION,
(GENERIC_READ | GENERIC_EXECUTE), psidWorld);
// add a discretionary ACL to the Security Descriptor
SetSecurityDescriptorDacl (
pSD,
TRUE,
pACL,
FALSE);
// free local structures
FreeSid (psidAdmins);
FreeSid (psidWorld);
// return the completed SD
} else {
// unable to allocate a World (everyone) SID
// free Admin SID and set not valid flag
FreeSid (psidAdmins);
bValidSd = FALSE;
}
} else {
// unable to allocate an Admin SID
bValidSd = FALSE;
}
} else {
// unable to init. Security Descriptor
bValidSd = FALSE;
}
}
if ((pSD == NULL) || !bValidSd ) {
// something happened, so the SD is not valid. Free it and return
// NULL
FREE_IF_ALLOC (pSD);
pSD = NULL;
} else {
// make sure all was created OK
if (!IsValidSecurityDescriptor(pSD)) {
// an invalid sercurity descriptor was created so
// get reason, then trash it.
dwError = GetLastError();
FREE_IF_ALLOC (pSD);
pSD = NULL;
}
}
return pSD;
}
static
BOOL
SharePathDlg_WM_INITDIALOG (
IN HWND hwndDlg,
IN WPARAM wParam,
IN LPARAM lParam
)
/*++
Routine Description:
Process the WM_INITDIALOG windows message. Initialized the
values in the dialog box controls to reflect the current
values of the Application data structure.
Arguments:
IN HWND hwndDlg
handle to dialog box window
IN WPARAM wParam
Not Used
IN LPARAM lParam
address of SHARE_PATH_DLG_STRUCT that contains share information
Return Value:
FALSE
--*/
{
PositionWindow (hwndDlg);
if (lParam == 0) {
pspData = NULL;
EndDialog (hwndDlg, IDCANCEL);
} else {
pspData = (PSPS_DATA)lParam;
SetDlgItemText (hwndDlg, NCDU_CTL_SHARING_PATH_NAME, pspData->szPath);
SetDlgItemText (hwndDlg, NCDU_CTL_SHARING_PATH_ON,
(pspData->szServer != NULL ? pspData->szServer :
GetStringResource (CSZ_LOCAL_MACHINE)));
SetDlgItemText (hwndDlg, NCDU_CTL_SHARING_PATH_AS,
pspData->szShareName);
SetCursor (LoadCursor(NULL, IDC_WAIT));
PostMessage (hwndDlg, NCDU_MSG_SHARE_DIR, 0, 0);
}
// SetActiveWindow (hwndDlg);
return TRUE;
}
static
BOOL
SharePathDlg_SHARE_DIR (
IN HWND hwndDlg,
IN WPARAM wParam,
IN LPARAM lParam // LPTSTR to sharename
)
/*++
Routine Description:
Shares either the Distribution or the Destination dir depending on
the wParam. Uses the share name entered in the display. If
successful this message terminates the dialog box, otherwise
an error message will be displayed.
Arguments:
IN HWND hwndDlg
Handle to dialog box window
IN WPARAM wParam
Not Used
IN LPARAM lParam
Not Used
Return Value:
TRUE if shared
FALSE if not (GetLastError for info)
--*/
{
BOOL bDist;
NET_API_STATUS naStatus;
DWORD dwParmErr;
SHARE_INFO_502 si502; // share info block
LONG lCount;
bDist = (BOOL)wParam;
// initialize share data block
si502.shi502_netname = pspData->szShareName;
si502.shi502_type = STYPE_DISKTREE;
si502.shi502_remark = (LPWSTR)pspData->szRemark;
si502.shi502_permissions = PERM_FILE_READ;
si502.shi502_max_uses = SHI_USES_UNLIMITED;
si502.shi502_current_uses = 0;
si502.shi502_path = pspData->szPath;
si502.shi502_passwd = NULL;
si502.shi502_reserved = 0L;
si502.shi502_security_descriptor = GetShareSecurityDescriptor();
naStatus = NetShareAdd (
pspData->szServer, // machine
502, // level 502 request
(LPBYTE)&si502, // data request buffer
&dwParmErr); // parameter buffer
if (naStatus != NERR_Success) {
// restore cursor
SetCursor (LoadCursor(NULL, IDC_ARROW));
// display error
MessageBox (
hwndDlg,
GetNetErrorMsg (naStatus),
0,
MB_OK_TASK_EXCL);
EndDialog (hwndDlg, IDCANCEL);
} else {
// successfully shared so wait til it registers or we get bored
lCount = 200; // wait 20 seconds then give up and leave
while (!LookupLocalShare (pspData->szPath, TRUE,
NULL, NULL )) {
Sleep (100); // wait until the new share registers
if (--lCount == 0) break;
}
Sleep (1000); // wait for shared dir to become available
SetCursor (LoadCursor(NULL, IDC_ARROW));
EndDialog (hwndDlg, IDOK);
}
FREE_IF_ALLOC (si502.shi502_security_descriptor);
return TRUE;
}
INT_PTR CALLBACK
SharePathDlgProc (
IN HWND hwndDlg,
IN UINT message,
IN WPARAM wParam,
IN LPARAM lParam
)
/*++
Routine Description:
Main Dialog Box Window Procedure for the Initial configuration screen
Processes the following windows messages by dispatching the
appropriate routine.
WM_INITDIALOG: dialog box initialization
WM_COMMAND: user input
All other windows messages are processed by the default dialog box
procedure.
Arguments:
Standard WNDPROC arguments
Return Value:
FALSE if the message is not processed by this routine, otherwise the
value returned by the dispatched routine.
--*/
{
switch (message) {
case WM_INITDIALOG: return (SharePathDlg_WM_INITDIALOG (hwndDlg, wParam, lParam));
case NCDU_MSG_SHARE_DIR: return (SharePathDlg_SHARE_DIR (hwndDlg, wParam, lParam));
default: return FALSE;
}
}