Skip to main content
summaryrefslogtreecommitdiffstats
blob: be632e5547ebcc6ea28d70c06e6119dd0ce2f31a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
// ProcList.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include "listtasks.h"
#include <tlhelp32.h>
#include <vdmdbg.h>
#include <iostream>
#include <iomanip>

using namespace std;

typedef struct
{
  DWORD          dwPID ;
  PROCENUMPROC   lpProc ;
  DWORD          lParam ;
  BOOL           bEnd ;
} EnumInfoStruct ;

BOOL WINAPI Enum16( DWORD dwThreadId, WORD hMod16, WORD hTask16,
  PSZ pszModName, PSZ pszFileName, LPARAM lpUserDefined ) ;

BOOL CALLBACK OutProcInfo( DWORD pid, WORD, LPSTR procName, LPARAM ) ;

int main(int argc, char* argv[])
{
	EnumProcs(OutProcInfo, 0);
	return 0;
}



/*********************
EnumProc.cpp
*********************/ 

// The EnumProcs function takes a pointer to a callback function
// that will be called once per process in the system providing
// process EXE filename and process ID.
// Callback function definition:
// BOOL CALLBACK Proc( DWORD dw, LPCSTR lpstr, LPARAM lParam ) ;
// 
// lpProc -- Address of callback routine.
// 
// lParam -- A user-defined LPARAM value to be passed to
//           the callback routine.
BOOL WINAPI EnumProcs( PROCENUMPROC lpProc, LPARAM lParam )
{
  OSVERSIONINFO  osver ;
  HINSTANCE      hInstLib ;
  HINSTANCE      hInstLib2 ;
  HANDLE         hSnapShot ;
  PROCESSENTRY32 procentry ;
  BOOL           bFlag ;
  LPDWORD        lpdwPIDs ;
  DWORD          dwSize, dwSize2, dwIndex ;
  HMODULE        hMod ;
  HANDLE         hProcess ;
  char           szFileName[ MAX_PATH ] ;
  EnumInfoStruct sInfo ;

  // ToolHelp Function Pointers.
  HANDLE (WINAPI *lpfCreateToolhelp32Snapshot)(DWORD,DWORD) ;
  BOOL (WINAPI *lpfProcess32First)(HANDLE,LPPROCESSENTRY32) ;
  BOOL (WINAPI *lpfProcess32Next)(HANDLE,LPPROCESSENTRY32) ;

  // PSAPI Function Pointers.
  BOOL (WINAPI *lpfEnumProcesses)( DWORD *, DWORD cb, DWORD * );
  BOOL (WINAPI *lpfEnumProcessModules)( HANDLE, HMODULE *,
     DWORD, LPDWORD );
  DWORD (WINAPI *lpfGetModuleFileNameEx)( HANDLE, HMODULE,
     LPTSTR, DWORD );

  // VDMDBG Function Pointers.
  INT (WINAPI *lpfVDMEnumTaskWOWEx)( DWORD,
     TASKENUMPROCEX  fp, LPARAM );


  // Check to see if were running under Windows95 or
  // Windows NT.
  osver.dwOSVersionInfoSize = sizeof( osver ) ;
  if( !GetVersionEx( &osver ) )
  {
     return FALSE ;
  }

  // If Windows NT:
  if( osver.dwPlatformId == VER_PLATFORM_WIN32_NT )
  {

     // Load library and get the procedures explicitly. We do
     // this so that we don't have to worry about modules using
     // this code failing to load under Windows 95, because
     // it can't resolve references to the PSAPI.DLL.
     hInstLib = LoadLibraryA( "PSAPI.DLL" ) ;
     if( hInstLib == NULL )
        return FALSE ;

     hInstLib2 = LoadLibraryA( "VDMDBG.DLL" ) ;
     if( hInstLib2 == NULL )
        return FALSE ;

     // Get procedure addresses.
     lpfEnumProcesses = (BOOL(WINAPI *)(DWORD *,DWORD,DWORD*))
        GetProcAddress( hInstLib, "EnumProcesses" ) ;
     lpfEnumProcessModules = (BOOL(WINAPI *)(HANDLE, HMODULE *,
        DWORD, LPDWORD)) GetProcAddress( hInstLib,
        "EnumProcessModules" ) ;
     lpfGetModuleFileNameEx =(DWORD (WINAPI *)(HANDLE, HMODULE,
        LPTSTR, DWORD )) GetProcAddress( hInstLib,
        "GetModuleFileNameExA" ) ;
     lpfVDMEnumTaskWOWEx =(INT(WINAPI *)( DWORD, TASKENUMPROCEX,
        LPARAM))GetProcAddress( hInstLib2, "VDMEnumTaskWOWEx" );
     if( lpfEnumProcesses == NULL ||
        lpfEnumProcessModules == NULL ||
        lpfGetModuleFileNameEx == NULL ||
        lpfVDMEnumTaskWOWEx == NULL)
        {
           FreeLibrary( hInstLib ) ;
           FreeLibrary( hInstLib2 ) ;
           return FALSE ;
        }

     // Call the PSAPI function EnumProcesses to get all of the
     // ProcID's currently in the system.
     // NOTE: In the documentation, the third parameter of
     // EnumProcesses is named cbNeeded, which implies that you
     // can call the function once to find out how much space to
     // allocate for a buffer and again to fill the buffer.
     // This is not the case. The cbNeeded parameter returns
     // the number of PIDs returned, so if your buffer size is
     // zero cbNeeded returns zero.
     // NOTE: The "HeapAlloc" loop here ensures that we
     // actually allocate a buffer large enough for all the
     // PIDs in the system.
     dwSize2 = 256 * sizeof( DWORD ) ;
     lpdwPIDs = NULL ;
     do
     {
        if( lpdwPIDs )
        {
           HeapFree( GetProcessHeap(), 0, lpdwPIDs ) ;
           dwSize2 *= 2 ;
        }
        lpdwPIDs = (LPDWORD)HeapAlloc( GetProcessHeap(), 0, dwSize2 );
        if( lpdwPIDs == NULL )
        {
           FreeLibrary( hInstLib ) ;
           FreeLibrary( hInstLib2 ) ;
           return FALSE ;
        }
        if( !lpfEnumProcesses( lpdwPIDs, dwSize2, &dwSize ) )
        {
           HeapFree( GetProcessHeap(), 0, lpdwPIDs ) ;
           FreeLibrary( hInstLib ) ;
           FreeLibrary( hInstLib2 ) ;
           return FALSE ;
        }
     }while( dwSize == dwSize2 ) ;

     // How many ProcID's did we get?
     dwSize /= sizeof( DWORD ) ;

     // Loop through each ProcID.
     for( dwIndex = 0 ; dwIndex < dwSize ; dwIndex++ )
     {
        szFileName[0] = 0 ;
        // Open the process (if we can... security does not
        // permit every process in the system).
        hProcess = OpenProcess(
           PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
           FALSE, lpdwPIDs[ dwIndex ] ) ;
        if( hProcess != NULL )
        {
           // Here we call EnumProcessModules to get only the
           // first module in the process this is important,
           // because this will be the .EXE module for which we
           // will retrieve the full path name in a second.
           if( lpfEnumProcessModules( hProcess, &hMod,
              sizeof( hMod ), &dwSize2 ) )
           {
              // Get Full pathname:
              if( !lpfGetModuleFileNameEx( hProcess, hMod,
                 szFileName, sizeof( szFileName ) ) )
              {
                 szFileName[0] = 0 ;
                }
           }
           CloseHandle( hProcess ) ;
        }
        // Regardless of OpenProcess success or failure, we
        // still call the enum func with the ProcID.
        if(!lpProc( lpdwPIDs[dwIndex], 0, szFileName, lParam))
           break ;

        // Did we just bump into an NTVDM?
        if( _stricmp( szFileName+(strlen(szFileName)-9),
           "NTVDM.EXE")==0)
        {
           // Fill in some info for the 16-bit enum proc.
           sInfo.dwPID = lpdwPIDs[dwIndex] ;
           sInfo.lpProc = lpProc ;
           sInfo.lParam = lParam ;
           sInfo.bEnd = FALSE ;
           // Enum the 16-bit stuff.
           lpfVDMEnumTaskWOWEx( lpdwPIDs[dwIndex],
              (TASKENUMPROCEX) Enum16,
              (LPARAM) &sInfo);

           // Did our main enum func say quit?
           if(sInfo.bEnd)
              break ;
        }
     }

     HeapFree( GetProcessHeap(), 0, lpdwPIDs ) ;
     FreeLibrary( hInstLib2 ) ;

  // If Windows 95:
  }else if( osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
  {


     hInstLib = LoadLibraryA( "Kernel32.DLL" ) ;
     if( hInstLib == NULL )
        return FALSE ;

     // Get procedure addresses.
     // We are linking to these functions of Kernel32
     // explicitly, because otherwise a module using
     // this code would fail to load under Windows NT,
     // which does not have the Toolhelp32
     // functions in the Kernel 32.
     lpfCreateToolhelp32Snapshot=
        (HANDLE(WINAPI *)(DWORD,DWORD))
        GetProcAddress( hInstLib,
        "CreateToolhelp32Snapshot" ) ;
     lpfProcess32First=
        (BOOL(WINAPI *)(HANDLE,LPPROCESSENTRY32))
        GetProcAddress( hInstLib, "Process32First" ) ;
     lpfProcess32Next=
        (BOOL(WINAPI *)(HANDLE,LPPROCESSENTRY32))
        GetProcAddress( hInstLib, "Process32Next" ) ;
     if( lpfProcess32Next == NULL ||
        lpfProcess32First == NULL ||
        lpfCreateToolhelp32Snapshot == NULL )
     {
        FreeLibrary( hInstLib ) ;
        return FALSE ;
     }

     // Get a handle to a Toolhelp snapshot of the systems
     // processes.
     hSnapShot = lpfCreateToolhelp32Snapshot(
        TH32CS_SNAPPROCESS, 0 ) ;
     if( hSnapShot == INVALID_HANDLE_VALUE )
     {
        FreeLibrary( hInstLib ) ;
        return FALSE ;
     }

     // Get the first process' information.
     procentry.dwSize = sizeof(PROCESSENTRY32) ;
     bFlag = lpfProcess32First( hSnapShot, &procentry ) ;

     // While there are processes, keep looping.
     while( bFlag )
     {
        // Call the enum func with the filename and ProcID.
        if(lpProc( procentry.th32ProcessID, 0,
           procentry.szExeFile, lParam ))
        {
           procentry.dwSize = sizeof(PROCESSENTRY32) ;
           bFlag = lpfProcess32Next( hSnapShot, &procentry );
        }else
           bFlag = FALSE ;
     }


  }else
     return FALSE ;

  // Free the library.
  FreeLibrary( hInstLib ) ;

  return TRUE ;
}

BOOL WINAPI Enum16( DWORD dwThreadId, WORD hMod16, WORD hTask16,
  PSZ pszModName, PSZ pszFileName, LPARAM lpUserDefined )
{
  BOOL bRet ;

  EnumInfoStruct *psInfo = (EnumInfoStruct *)lpUserDefined ;

  bRet = psInfo->lpProc( psInfo->dwPID, hTask16, pszFileName,
     psInfo->lParam ) ;

  if(!bRet)
  {
     psInfo->bEnd = TRUE ;
  }

  return !bRet;
} 

BOOL CALLBACK OutProcInfo( DWORD pid, WORD, LPSTR procName, LPARAM ) 
{
	cout << setw(10) <<  pid << '\t' << procName << '\n';
	return TRUE;
}

Back to the top