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Sweden-Number/dlls/kernel32/toolhelp.c

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/*
* Misc Toolhelp functions
*
* Copyright 1996 Marcus Meissner
* Copyright 2005 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <ctype.h>
#include <assert.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "tlhelp32.h"
#include "winnls.h"
#include "winternl.h"
#include "kernel_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(toolhelp);
struct snapshot
{
int process_count;
int process_pos;
int process_offset;
int thread_count;
int thread_pos;
int thread_offset;
int module_count;
int module_pos;
int module_offset;
char data[1];
};
static WCHAR *fetch_string( HANDLE hProcess, UNICODE_STRING* us)
{
WCHAR* local;
local = HeapAlloc( GetProcessHeap(), 0, us->Length );
if (local)
{
if (!ReadProcessMemory( hProcess, us->Buffer, local, us->Length, NULL))
{
HeapFree( GetProcessHeap(), 0, local );
local = NULL;
}
}
us->Buffer = local;
return local;
}
static BOOL fetch_module( DWORD process, DWORD flags, LDR_DATA_TABLE_ENTRY **ldr_mod, ULONG *num )
{
HANDLE hProcess;
PROCESS_BASIC_INFORMATION pbi;
PPEB_LDR_DATA pLdrData;
PLIST_ENTRY head, curr;
BOOL ret = FALSE;
*num = 0;
if (!(flags & TH32CS_SNAPMODULE)) return TRUE;
if (process)
{
hProcess = OpenProcess( PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, process );
if (!hProcess) return FALSE;
}
else
hProcess = GetCurrentProcess();
if (set_ntstatus( NtQueryInformationProcess( hProcess, ProcessBasicInformation,
&pbi, sizeof(pbi), NULL )))
{
if (ReadProcessMemory( hProcess, &pbi.PebBaseAddress->LdrData,
&pLdrData, sizeof(pLdrData), NULL ) &&
ReadProcessMemory( hProcess,
&pLdrData->InLoadOrderModuleList.Flink,
&curr, sizeof(curr), NULL ))
{
head = &pLdrData->InLoadOrderModuleList;
while (curr != head)
{
if (!*num)
*ldr_mod = HeapAlloc( GetProcessHeap(), 0, sizeof(LDR_DATA_TABLE_ENTRY) );
else
*ldr_mod = HeapReAlloc( GetProcessHeap(), 0, *ldr_mod,
(*num + 1) * sizeof(LDR_DATA_TABLE_ENTRY) );
if (!*ldr_mod) break;
if (!ReadProcessMemory( hProcess,
CONTAINING_RECORD(curr, LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks),
&(*ldr_mod)[*num],
sizeof(LDR_DATA_TABLE_ENTRY), NULL))
break;
curr = (*ldr_mod)[*num].InLoadOrderLinks.Flink;
/* if we cannot fetch the strings, then just ignore this LDR_DATA_TABLE_ENTRY
* and continue loading the other ones in the list
*/
if (!fetch_string( hProcess, &(*ldr_mod)[*num].BaseDllName )) continue;
if (fetch_string( hProcess, &(*ldr_mod)[*num].FullDllName ))
(*num)++;
else
HeapFree( GetProcessHeap(), 0, (*ldr_mod)[*num].BaseDllName.Buffer );
}
ret = TRUE;
}
}
if (process) CloseHandle( hProcess );
return ret;
}
static void fill_module( struct snapshot* snap, ULONG* offset, ULONG process,
LDR_DATA_TABLE_ENTRY* ldr_mod, ULONG num )
{
MODULEENTRY32W* mod;
ULONG i;
SIZE_T l;
snap->module_count = num;
snap->module_pos = 0;
if (!num) return;
snap->module_offset = *offset;
mod = (MODULEENTRY32W*)&snap->data[*offset];
for (i = 0; i < num; i++)
{
mod->dwSize = sizeof(MODULEENTRY32W);
mod->th32ModuleID = 1; /* toolhelp internal id, never used */
mod->th32ProcessID = process ? process : GetCurrentProcessId();
mod->GlblcntUsage = 0xFFFF; /* FIXME */
mod->ProccntUsage = 0xFFFF; /* FIXME */
mod->modBaseAddr = ldr_mod[i].DllBase;
mod->modBaseSize = ldr_mod[i].SizeOfImage;
mod->hModule = ldr_mod[i].DllBase;
l = min(ldr_mod[i].BaseDllName.Length, sizeof(mod->szModule) - sizeof(WCHAR));
memcpy(mod->szModule, ldr_mod[i].BaseDllName.Buffer, l);
mod->szModule[l / sizeof(WCHAR)] = '\0';
l = min(ldr_mod[i].FullDllName.Length, sizeof(mod->szExePath) - sizeof(WCHAR));
memcpy(mod->szExePath, ldr_mod[i].FullDllName.Buffer, l);
mod->szExePath[l / sizeof(WCHAR)] = '\0';
mod++;
}
*offset += num * sizeof(MODULEENTRY32W);
}
static BOOL fetch_process_thread( DWORD flags, SYSTEM_PROCESS_INFORMATION** pspi,
ULONG* num_pcs, ULONG* num_thd)
{
NTSTATUS status;
ULONG size, offset;
PSYSTEM_PROCESS_INFORMATION spi;
*num_pcs = *num_thd = 0;
if (!(flags & (TH32CS_SNAPPROCESS | TH32CS_SNAPTHREAD))) return TRUE;
*pspi = HeapAlloc( GetProcessHeap(), 0, size = 4096 );
for (;;)
{
status = NtQuerySystemInformation( SystemProcessInformation, *pspi,
size, NULL );
switch (status)
{
case STATUS_SUCCESS:
*num_pcs = *num_thd = offset = 0;
spi = *pspi;
do
{
spi = (SYSTEM_PROCESS_INFORMATION*)((char*)spi + offset);
if (flags & TH32CS_SNAPPROCESS) (*num_pcs)++;
if (flags & TH32CS_SNAPTHREAD) *num_thd += spi->dwThreadCount;
} while ((offset = spi->NextEntryOffset));
return TRUE;
case STATUS_INFO_LENGTH_MISMATCH:
*pspi = HeapReAlloc( GetProcessHeap(), 0, *pspi, size *= 2 );
break;
default:
SetLastError( RtlNtStatusToDosError( status ) );
return FALSE;
}
}
}
static void fill_process( struct snapshot* snap, ULONG* offset,
SYSTEM_PROCESS_INFORMATION* spi, ULONG num )
{
PROCESSENTRY32W* pcs_entry;
ULONG poff = 0;
SIZE_T l;
snap->process_count = num;
snap->process_pos = 0;
if (!num) return;
snap->process_offset = *offset;
pcs_entry = (PROCESSENTRY32W*)&snap->data[*offset];
do
{
spi = (SYSTEM_PROCESS_INFORMATION*)((char*)spi + poff);
pcs_entry->dwSize = sizeof(PROCESSENTRY32W);
pcs_entry->cntUsage = 0; /* MSDN says no longer used, always 0 */
pcs_entry->th32ProcessID = HandleToUlong(spi->UniqueProcessId);
pcs_entry->th32DefaultHeapID = 0; /* MSDN says no longer used, always 0 */
pcs_entry->th32ModuleID = 0; /* MSDN says no longer used, always 0 */
pcs_entry->cntThreads = spi->dwThreadCount;
pcs_entry->th32ParentProcessID = HandleToUlong(spi->ParentProcessId);
pcs_entry->pcPriClassBase = spi->dwBasePriority;
pcs_entry->dwFlags = 0; /* MSDN says no longer used, always 0 */
l = min(spi->ProcessName.Length, sizeof(pcs_entry->szExeFile) - sizeof(WCHAR));
memcpy(pcs_entry->szExeFile, spi->ProcessName.Buffer, l);
pcs_entry->szExeFile[l / sizeof(WCHAR)] = '\0';
pcs_entry++;
} while ((poff = spi->NextEntryOffset));
*offset += num * sizeof(PROCESSENTRY32W);
}
static void fill_thread( struct snapshot* snap, ULONG* offset, LPVOID info, ULONG num )
{
THREADENTRY32* thd_entry;
SYSTEM_PROCESS_INFORMATION* spi;
SYSTEM_THREAD_INFORMATION* sti;
ULONG i, poff = 0;
snap->thread_count = num;
snap->thread_pos = 0;
if (!num) return;
snap->thread_offset = *offset;
thd_entry = (THREADENTRY32*)&snap->data[*offset];
spi = info;
do
{
spi = (SYSTEM_PROCESS_INFORMATION*)((char*)spi + poff);
sti = &spi->ti[0];
for (i = 0; i < spi->dwThreadCount; i++)
{
thd_entry->dwSize = sizeof(THREADENTRY32);
thd_entry->cntUsage = 0; /* MSDN says no longer used, always 0 */
thd_entry->th32ThreadID = HandleToUlong(sti->ClientId.UniqueThread);
thd_entry->th32OwnerProcessID = HandleToUlong(sti->ClientId.UniqueProcess);
thd_entry->tpBasePri = sti->dwBasePriority;
thd_entry->tpDeltaPri = 0; /* MSDN says no longer used, always 0 */
thd_entry->dwFlags = 0; /* MSDN says no longer used, always 0" */
sti++;
thd_entry++;
}
} while ((poff = spi->NextEntryOffset));
*offset += num * sizeof(THREADENTRY32);
}
/***********************************************************************
* CreateToolhelp32Snapshot (KERNEL32.@)
*/
HANDLE WINAPI CreateToolhelp32Snapshot( DWORD flags, DWORD process )
{
SYSTEM_PROCESS_INFORMATION* spi = NULL;
LDR_DATA_TABLE_ENTRY *mod = NULL;
ULONG num_pcs, num_thd, num_mod;
HANDLE hSnapShot = 0;
TRACE("%x,%x\n", flags, process );
if (!(flags & (TH32CS_SNAPPROCESS|TH32CS_SNAPTHREAD|TH32CS_SNAPMODULE)))
{
FIXME("flags %x not implemented\n", flags );
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return INVALID_HANDLE_VALUE;
}
if (fetch_module( process, flags, &mod, &num_mod ) &&
fetch_process_thread( flags, &spi, &num_pcs, &num_thd ))
{
ULONG sect_size;
struct snapshot*snap;
SECURITY_ATTRIBUTES sa;
/* create & fill the snapshot section */
sect_size = sizeof(struct snapshot) - 1; /* for last data[1] */
if (flags & TH32CS_SNAPMODULE) sect_size += num_mod * sizeof(MODULEENTRY32W);
if (flags & TH32CS_SNAPPROCESS) sect_size += num_pcs * sizeof(PROCESSENTRY32W);
if (flags & TH32CS_SNAPTHREAD) sect_size += num_thd * sizeof(THREADENTRY32);
if (flags & TH32CS_SNAPHEAPLIST)FIXME("Unimplemented: heap list snapshot\n");
sa.bInheritHandle = (flags & TH32CS_INHERIT) != 0;
sa.lpSecurityDescriptor = NULL;
hSnapShot = CreateFileMappingW( INVALID_HANDLE_VALUE, &sa,
SEC_COMMIT | PAGE_READWRITE,
0, sect_size, NULL );
if (hSnapShot && (snap = MapViewOfFile( hSnapShot, FILE_MAP_ALL_ACCESS, 0, 0, 0 )))
{
DWORD offset = 0;
fill_module( snap, &offset, process, mod, num_mod );
fill_process( snap, &offset, spi, num_pcs );
fill_thread( snap, &offset, spi, num_thd );
UnmapViewOfFile( snap );
}
}
while (num_mod--)
{
HeapFree( GetProcessHeap(), 0, mod[num_mod].BaseDllName.Buffer );
HeapFree( GetProcessHeap(), 0, mod[num_mod].FullDllName.Buffer );
}
HeapFree( GetProcessHeap(), 0, mod );
HeapFree( GetProcessHeap(), 0, spi );
if (!hSnapShot) return INVALID_HANDLE_VALUE;
return hSnapShot;
}
static BOOL next_thread( HANDLE hSnapShot, LPTHREADENTRY32 lpte, BOOL first )
{
struct snapshot* snap;
BOOL ret = FALSE;
if (lpte->dwSize < sizeof(THREADENTRY32))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
WARN("Result buffer too small (%d)\n", lpte->dwSize);
return FALSE;
}
if ((snap = MapViewOfFile( hSnapShot, FILE_MAP_ALL_ACCESS, 0, 0, 0 )))
{
if (first) snap->thread_pos = 0;
if (snap->thread_pos < snap->thread_count)
{
LPTHREADENTRY32 te = (THREADENTRY32*)&snap->data[snap->thread_offset];
*lpte = te[snap->thread_pos++];
ret = TRUE;
}
else SetLastError( ERROR_NO_MORE_FILES );
UnmapViewOfFile( snap );
}
return ret;
}
/***********************************************************************
* Thread32First (KERNEL32.@)
*
* Return info about the first thread in a toolhelp32 snapshot
*/
BOOL WINAPI Thread32First( HANDLE hSnapShot, LPTHREADENTRY32 lpte )
{
return next_thread( hSnapShot, lpte, TRUE );
}
/***********************************************************************
* Thread32Next (KERNEL32.@)
*
* Return info about the first thread in a toolhelp32 snapshot
*/
BOOL WINAPI Thread32Next( HANDLE hSnapShot, LPTHREADENTRY32 lpte )
{
return next_thread( hSnapShot, lpte, FALSE );
}
/***********************************************************************
* process_next
*
* Implementation of Process32First/Next. Note that the ANSI / Unicode
* version check is a bit of a hack as it relies on the fact that only
* the last field is actually different.
*/
static BOOL process_next( HANDLE hSnapShot, LPPROCESSENTRY32W lppe,
BOOL first, BOOL unicode )
{
struct snapshot* snap;
BOOL ret = FALSE;
DWORD sz = unicode ? sizeof(PROCESSENTRY32W) : sizeof(PROCESSENTRY32);
if (lppe->dwSize < sz)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
WARN("Result buffer too small (%d)\n", lppe->dwSize);
return FALSE;
}
if ((snap = MapViewOfFile( hSnapShot, FILE_MAP_ALL_ACCESS, 0, 0, 0 )))
{
if (first) snap->process_pos = 0;
if (snap->process_pos < snap->process_count)
{
LPPROCESSENTRY32W pe = (PROCESSENTRY32W*)&snap->data[snap->process_offset];
if (unicode)
*lppe = pe[snap->process_pos];
else
{
lppe->cntUsage = pe[snap->process_pos].cntUsage;
lppe->th32ProcessID = pe[snap->process_pos].th32ProcessID;
lppe->th32DefaultHeapID = pe[snap->process_pos].th32DefaultHeapID;
lppe->th32ModuleID = pe[snap->process_pos].th32ModuleID;
lppe->cntThreads = pe[snap->process_pos].cntThreads;
lppe->th32ParentProcessID = pe[snap->process_pos].th32ParentProcessID;
lppe->pcPriClassBase = pe[snap->process_pos].pcPriClassBase;
lppe->dwFlags = pe[snap->process_pos].dwFlags;
WideCharToMultiByte( CP_ACP, 0, pe[snap->process_pos].szExeFile, -1,
(char*)lppe->szExeFile, sizeof(lppe->szExeFile),
0, 0 );
}
snap->process_pos++;
ret = TRUE;
}
else SetLastError( ERROR_NO_MORE_FILES );
UnmapViewOfFile( snap );
}
return ret;
}
/***********************************************************************
* Process32First (KERNEL32.@)
*
* Return info about the first process in a toolhelp32 snapshot
*/
BOOL WINAPI Process32First(HANDLE hSnapshot, LPPROCESSENTRY32 lppe)
{
return process_next( hSnapshot, (PROCESSENTRY32W*)lppe, TRUE, FALSE /* ANSI */ );
}
/***********************************************************************
* Process32Next (KERNEL32.@)
*
* Return info about the "next" process in a toolhelp32 snapshot
*/
BOOL WINAPI Process32Next(HANDLE hSnapshot, LPPROCESSENTRY32 lppe)
{
return process_next( hSnapshot, (PROCESSENTRY32W*)lppe, FALSE, FALSE /* ANSI */ );
}
/***********************************************************************
* Process32FirstW (KERNEL32.@)
*
* Return info about the first process in a toolhelp32 snapshot
*/
BOOL WINAPI Process32FirstW(HANDLE hSnapshot, LPPROCESSENTRY32W lppe)
{
return process_next( hSnapshot, lppe, TRUE, TRUE /* Unicode */ );
}
/***********************************************************************
* Process32NextW (KERNEL32.@)
*
* Return info about the "next" process in a toolhelp32 snapshot
*/
BOOL WINAPI Process32NextW(HANDLE hSnapshot, LPPROCESSENTRY32W lppe)
{
return process_next( hSnapshot, lppe, FALSE, TRUE /* Unicode */ );
}
/***********************************************************************
* module_nextW
*
* Implementation of Module32{First|Next}W
*/
static BOOL module_nextW( HANDLE hSnapShot, LPMODULEENTRY32W lpme, BOOL first )
{
struct snapshot* snap;
BOOL ret = FALSE;
if (lpme->dwSize < sizeof (MODULEENTRY32W))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
WARN("Result buffer too small (was: %d)\n", lpme->dwSize);
return FALSE;
}
if ((snap = MapViewOfFile( hSnapShot, FILE_MAP_ALL_ACCESS, 0, 0, 0 )))
{
if (first) snap->module_pos = 0;
if (snap->module_pos < snap->module_count)
{
LPMODULEENTRY32W pe = (MODULEENTRY32W*)&snap->data[snap->module_offset];
*lpme = pe[snap->module_pos++];
ret = TRUE;
}
else SetLastError( ERROR_NO_MORE_FILES );
UnmapViewOfFile( snap );
}
return ret;
}
/***********************************************************************
* Module32FirstW (KERNEL32.@)
*
* Return info about the "first" module in a toolhelp32 snapshot
*/
BOOL WINAPI Module32FirstW(HANDLE hSnapshot, LPMODULEENTRY32W lpme)
{
return module_nextW( hSnapshot, lpme, TRUE );
}
/***********************************************************************
* Module32NextW (KERNEL32.@)
*
* Return info about the "next" module in a toolhelp32 snapshot
*/
BOOL WINAPI Module32NextW(HANDLE hSnapshot, LPMODULEENTRY32W lpme)
{
return module_nextW( hSnapshot, lpme, FALSE );
}
/***********************************************************************
* module_nextA
*
* Implementation of Module32{First|Next}A
*/
static BOOL module_nextA( HANDLE handle, LPMODULEENTRY32 lpme, BOOL first )
{
BOOL ret;
MODULEENTRY32W mew;
if (lpme->dwSize < sizeof(MODULEENTRY32))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
WARN("Result buffer too small (was: %d)\n", lpme->dwSize);
return FALSE;
}
mew.dwSize = sizeof(mew);
if ((ret = module_nextW( handle, &mew, first )))
{
lpme->th32ModuleID = mew.th32ModuleID;
lpme->th32ProcessID = mew.th32ProcessID;
lpme->GlblcntUsage = mew.GlblcntUsage;
lpme->ProccntUsage = mew.ProccntUsage;
lpme->modBaseAddr = mew.modBaseAddr;
lpme->modBaseSize = mew.modBaseSize;
lpme->hModule = mew.hModule;
WideCharToMultiByte( CP_ACP, 0, mew.szModule, -1, lpme->szModule, sizeof(lpme->szModule), NULL, NULL );
WideCharToMultiByte( CP_ACP, 0, mew.szExePath, -1, lpme->szExePath, sizeof(lpme->szExePath), NULL, NULL );
}
return ret;
}
/***********************************************************************
* Module32First (KERNEL32.@)
*
* Return info about the "first" module in a toolhelp32 snapshot
*/
BOOL WINAPI Module32First(HANDLE hSnapshot, LPMODULEENTRY32 lpme)
{
return module_nextA( hSnapshot, lpme, TRUE );
}
/***********************************************************************
* Module32Next (KERNEL32.@)
*
* Return info about the "next" module in a toolhelp32 snapshot
*/
BOOL WINAPI Module32Next(HANDLE hSnapshot, LPMODULEENTRY32 lpme)
{
return module_nextA( hSnapshot, lpme, FALSE );
}
/************************************************************************
* Heap32ListFirst (KERNEL32.@)
*
*/
BOOL WINAPI Heap32ListFirst(HANDLE hSnapshot, LPHEAPLIST32 lphl)
{
FIXME(": stub\n");
return FALSE;
}
/******************************************************************
* Toolhelp32ReadProcessMemory (KERNEL32.@)
*
*
*/
BOOL WINAPI Toolhelp32ReadProcessMemory(DWORD pid, const void* base,
void* buf, SIZE_T len, SIZE_T* r)
{
HANDLE h;
BOOL ret = FALSE;
h = (pid) ? OpenProcess(PROCESS_VM_READ, FALSE, pid) : GetCurrentProcess();
if (h != NULL)
{
ret = ReadProcessMemory(h, base, buf, len, r);
if (pid) CloseHandle(h);
}
return ret;
}
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