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.
286 lines
9.8 KiB
286 lines
9.8 KiB
//+----------------------------------------------------------------------------
|
|
//
|
|
// File: DumpSecInfo.cpp
|
|
//
|
|
// Module: as required
|
|
//
|
|
// Synopsis: Functions to help figure out Permissions issues. To fix "NULL DACL"
|
|
// security issues, or try and figure out permissions bugs, this module
|
|
// may be useful. Entry point is DumpAclInfo.
|
|
//
|
|
// Copyright (c) 1998-2001 Microsoft Corporation
|
|
//
|
|
// Author: SumitC Created 18-Dec-2000
|
|
//
|
|
//+----------------------------------------------------------------------------
|
|
|
|
#include "winbase.h"
|
|
#include "sddl.h"
|
|
|
|
//
|
|
// support for dynamically loading Advapi32 Security functions
|
|
//
|
|
|
|
HMODULE g_hAdvapi32 = NULL;
|
|
|
|
typedef BOOL (WINAPI *pfnLookupAccountSid) (LPCWSTR, PSID, LPWSTR, LPDWORD, LPWSTR, LPDWORD, PSID_NAME_USE);
|
|
typedef BOOL (WINAPI *pfnGetUserObjectSecurity) (HANDLE, PSECURITY_INFORMATION, PSECURITY_DESCRIPTOR, DWORD, LPDWORD);
|
|
typedef BOOL (WINAPI *pfnConvertSidToStringSid) (PSID, LPWSTR*);
|
|
typedef BOOL (WINAPI *pfnGetSecurityDescriptorOwner) (PSECURITY_DESCRIPTOR, PSID *, LPBOOL);
|
|
typedef BOOL (WINAPI *pfnGetSecurityDescriptorSacl) (PSECURITY_DESCRIPTOR, LPBOOL, PACL *, LPBOOL);
|
|
typedef BOOL (WINAPI *pfnGetSecurityDescriptorDacl) (PSECURITY_DESCRIPTOR, LPBOOL, PACL *, LPBOOL);
|
|
typedef BOOL (WINAPI *pfnGetAce) (PACL, DWORD, LPVOID *);
|
|
|
|
pfnLookupAccountSid g_pfnLookupAccountSid = NULL;
|
|
pfnGetUserObjectSecurity g_pfnGetUserObjectSecurity = NULL;
|
|
pfnConvertSidToStringSid g_pfnConvertSidToStringSid = NULL;
|
|
pfnGetSecurityDescriptorOwner g_pfnGetSecurityDescriptorOwner = NULL;
|
|
pfnGetSecurityDescriptorSacl g_pfnGetSecurityDescriptorSacl = NULL;
|
|
pfnGetSecurityDescriptorDacl g_pfnGetSecurityDescriptorDacl = NULL;
|
|
pfnGetAce g_pfnGetAce = NULL;
|
|
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// Function: GetSidType
|
|
//
|
|
// Synopsis: Returns the string corresponding to a given SID type
|
|
//
|
|
// Arguments: [i] -- index representing the SID
|
|
//
|
|
// Returns: LPTSTR - static string containing a displayable Sid type
|
|
//
|
|
// Notes:
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
LPTSTR GetSidType(int i)
|
|
{
|
|
static LPTSTR szMap[] =
|
|
{
|
|
TEXT("User"),
|
|
TEXT("Group"),
|
|
TEXT("Domain"),
|
|
TEXT("Alias"),
|
|
TEXT("WellKnownGroup"),
|
|
TEXT("DeletedAccount"),
|
|
TEXT("Invalid"),
|
|
TEXT("Unknown"),
|
|
TEXT("Computer")
|
|
};
|
|
|
|
if (i >= 1 && i <= 9)
|
|
{
|
|
return szMap[i - 1];
|
|
}
|
|
else
|
|
{
|
|
return TEXT("");
|
|
}
|
|
|
|
}
|
|
|
|
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// Function: DumpSid
|
|
//
|
|
// Synopsis: returns information for a give SID
|
|
//
|
|
// Arguments: [psid] -- ptr to SecurityID
|
|
// [pszBuffer] -- where to return SID string (caller must free)
|
|
//
|
|
// Returns: LPTSTR - ptr to pszBuffer if success, NULL if failure
|
|
//
|
|
// Notes:
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
LPTSTR DumpSid(PSID psid, LPTSTR pszBuffer)
|
|
{
|
|
LPTSTR pszSID = NULL;
|
|
TCHAR szName[MAX_PATH + 1];
|
|
DWORD cbName = MAX_PATH;
|
|
TCHAR szDomain[MAX_PATH + 1];
|
|
DWORD cbDomain = MAX_PATH;
|
|
SID_NAME_USE snu;
|
|
BOOL fDone = FALSE;
|
|
|
|
CMASSERTMSG(pszBuffer, TEXT("DumpSid - pszBuffer must be allocated by caller"));
|
|
|
|
if (g_pfnConvertSidToStringSid(psid, &pszSID) &&
|
|
g_pfnLookupAccountSid(NULL, psid, szName, &cbName, szDomain, &cbDomain, &snu))
|
|
{
|
|
wsprintf(pszBuffer, TEXT("%s\\%s %s %s"), szDomain, szName, GetSidType(snu), pszSID);
|
|
// looks like NTDEV\sumitc User xxxx-xxx-xxx-xxx
|
|
fDone = TRUE;
|
|
}
|
|
|
|
if (pszSID)
|
|
{
|
|
LocalFree(pszSID);
|
|
}
|
|
|
|
return fDone ? pszBuffer : NULL;
|
|
}
|
|
|
|
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// Function: DumpAclInfo
|
|
//
|
|
// Synopsis: Dumps out all ACL info for a given object
|
|
//
|
|
// Arguments: [h] -- handle to object about which info is needed
|
|
//
|
|
// Returns: (void)
|
|
//
|
|
// Notes:
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
void DumpAclInfo(HANDLE h)
|
|
{
|
|
if (!OS_NT)
|
|
{
|
|
CMTRACE(TEXT("DumpAclInfo will not work on 9x systems"));
|
|
return;
|
|
}
|
|
|
|
TCHAR szBuf[MAX_PATH];
|
|
SECURITY_INFORMATION si = 0;
|
|
|
|
//
|
|
// dynamically pick up the DLLs we need
|
|
//
|
|
g_hAdvapi32 = LoadLibrary(TEXT("ADVAPI32.DLL"));
|
|
|
|
if (NULL == g_hAdvapi32)
|
|
{
|
|
CMTRACE(TEXT("DumpAclInfo: failed to load advapi32.dll"));
|
|
return;
|
|
}
|
|
|
|
g_pfnLookupAccountSid = (pfnLookupAccountSid) GetProcAddress(g_hAdvapi32, "LookupAccountSidW");
|
|
g_pfnGetUserObjectSecurity = (pfnGetUserObjectSecurity) GetProcAddress(g_hAdvapi32, "GetUserObjectSecurity");
|
|
g_pfnConvertSidToStringSid = (pfnConvertSidToStringSid) GetProcAddress(g_hAdvapi32, "ConvertSidToStringSidW");
|
|
g_pfnGetSecurityDescriptorOwner = (pfnGetSecurityDescriptorOwner) GetProcAddress(g_hAdvapi32, "GetSecurityDescriptorOwner");
|
|
g_pfnGetSecurityDescriptorSacl = (pfnGetSecurityDescriptorSacl) GetProcAddress(g_hAdvapi32, "GetSecurityDescriptorSacl");
|
|
g_pfnGetSecurityDescriptorDacl = (pfnGetSecurityDescriptorDacl) GetProcAddress(g_hAdvapi32, "GetSecurityDescriptorDacl");
|
|
g_pfnGetAce = (pfnGetAce) GetProcAddress(g_hAdvapi32, "GetAce");
|
|
|
|
if (!(g_pfnLookupAccountSid && g_pfnGetUserObjectSecurity &&
|
|
g_pfnConvertSidToStringSid && g_pfnGetSecurityDescriptorOwner &&
|
|
g_pfnGetSecurityDescriptorSacl && g_pfnGetSecurityDescriptorDacl &&
|
|
g_pfnGetAce))
|
|
{
|
|
CMTRACE(TEXT("DumpAclInfo: failed to load required functions in advapi32.dll"));
|
|
goto Cleanup;
|
|
}
|
|
|
|
//
|
|
// dump information on the ACL
|
|
//
|
|
DWORD dw;
|
|
|
|
si |= OWNER_SECURITY_INFORMATION;
|
|
si |= DACL_SECURITY_INFORMATION;
|
|
|
|
if (!g_pfnGetUserObjectSecurity(h, &si, NULL, 0, &dw) &&
|
|
ERROR_INSUFFICIENT_BUFFER == GetLastError())
|
|
{
|
|
PSECURITY_DESCRIPTOR pSD = NULL;
|
|
|
|
pSD = (PSECURITY_DESCRIPTOR) CmMalloc(dw);
|
|
|
|
if (g_pfnGetUserObjectSecurity(h, &si, pSD, dw, &dw))
|
|
{
|
|
// get the owner
|
|
PSID psidOwner;
|
|
BOOL fDefaulted;
|
|
|
|
if (g_pfnGetSecurityDescriptorOwner(pSD, &psidOwner, &fDefaulted))
|
|
{
|
|
CMTRACE1(TEXT("SIDINFO: Owner is: %s"), DumpSid(psidOwner, szBuf));
|
|
}
|
|
|
|
PACL pacl;
|
|
BOOL fPresent;
|
|
int i;
|
|
|
|
g_pfnGetSecurityDescriptorSacl(pSD, &fPresent, &pacl, &fDefaulted);
|
|
CMTRACE1(TEXT("sacl gle=%d"), GetLastError());
|
|
if (fPresent)
|
|
{
|
|
CMTRACE(TEXT("SIDINFO: found a SACL"));
|
|
// has a SACL
|
|
void * pv;
|
|
for (i = 0 ; i < 15; ++i)
|
|
{
|
|
if (g_pfnGetAce(pacl, i, &pv))
|
|
{
|
|
// try access allowed ace
|
|
//
|
|
ACCESS_ALLOWED_ACE * pACE = (ACCESS_ALLOWED_ACE *)pv;
|
|
if (pACE->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
|
|
{
|
|
CMTRACE1(TEXT("SIDINFO: allowed is: %s"), DumpSid(&(pACE->SidStart), szBuf));
|
|
}
|
|
else
|
|
{
|
|
ACCESS_DENIED_ACE * pACE = (ACCESS_DENIED_ACE *)pv;
|
|
if (pACE->Header.AceType == ACCESS_DENIED_ACE_TYPE)
|
|
{
|
|
CMTRACE1(TEXT("SIDINFO: denied is: %s"), DumpSid(&(pACE->SidStart), szBuf));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
g_pfnGetSecurityDescriptorDacl(pSD, &fPresent, &pacl, &fDefaulted);
|
|
CMTRACE1(TEXT("dacl gle=%d"), GetLastError());
|
|
if (fPresent)
|
|
{
|
|
CMTRACE(TEXT("SIDINFO: found a DACL"));
|
|
// has a DACL
|
|
void * pv;
|
|
for (i = 0 ; i < 15; ++i)
|
|
{
|
|
if (g_pfnGetAce(pacl, i, &pv))
|
|
{
|
|
// try access allowed ace
|
|
//
|
|
ACCESS_ALLOWED_ACE * pACE = (ACCESS_ALLOWED_ACE *)pv;
|
|
if (pACE->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
|
|
{
|
|
CMTRACE1(TEXT("SIDINFO: allowed is: %s"), DumpSid(&(pACE->SidStart), szBuf));
|
|
}
|
|
else
|
|
{
|
|
ACCESS_DENIED_ACE * pACE = (ACCESS_DENIED_ACE *)pv;
|
|
if (pACE->Header.AceType == ACCESS_DENIED_ACE_TYPE)
|
|
{
|
|
CMTRACE1(TEXT("SIDINFO: denied is: %s"), DumpSid(&(pACE->SidStart), szBuf));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
CmFree(pSD);
|
|
}
|
|
|
|
Cleanup:
|
|
|
|
if (g_hAdvapi32)
|
|
{
|
|
FreeLibrary(g_hAdvapi32);
|
|
g_hAdvapi32 = NULL;
|
|
|
|
g_pfnLookupAccountSid = NULL;
|
|
g_pfnGetUserObjectSecurity = NULL;
|
|
g_pfnConvertSidToStringSid = NULL;
|
|
g_pfnGetSecurityDescriptorOwner = NULL;
|
|
g_pfnGetSecurityDescriptorSacl = NULL;
|
|
g_pfnGetSecurityDescriptorDacl = NULL;
|
|
g_pfnGetAce = NULL;
|
|
}
|
|
}
|
|
|