115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
/* module_info.cc
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Copyright 1999 Cygnus Solutions.
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Written by Egor Duda <deo@logos-m.ru>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <stdlib.h>
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#include <windows.h>
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#include <psapi.h>
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static int psapi_loaded = 0;
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static HMODULE psapi_module_handle = NULL;
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typedef BOOL WINAPI (tf_EnumProcessModules) (HANDLE, HMODULE *, DWORD,
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LPDWORD);
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typedef BOOL WINAPI (tf_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
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DWORD);
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typedef DWORD WINAPI (tf_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR,
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DWORD);
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static tf_EnumProcessModules *psapi_EnumProcessModules = NULL;
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static tf_GetModuleInformation *psapi_GetModuleInformation = NULL;
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static tf_GetModuleFileNameExA *psapi_GetModuleFileNameExA = NULL;
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/* Returns full name of Dll, which is loaded by hProcess at BaseAddress.
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Uses psapi.dll. */
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char *
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psapi_get_module_name (HANDLE hProcess, DWORD BaseAddress)
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{
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DWORD len;
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MODULEINFO mi;
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unsigned int i;
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HMODULE dh_buf[1];
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HMODULE *DllHandle = dh_buf;
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DWORD cbNeeded;
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BOOL ok;
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char name_buf[MAX_PATH + 1];
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if (!psapi_loaded ||
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psapi_EnumProcessModules == NULL ||
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psapi_GetModuleInformation == NULL ||
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psapi_GetModuleFileNameExA == NULL)
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{
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if (psapi_loaded)
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goto failed;
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psapi_loaded = 1;
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psapi_module_handle = LoadLibrary ("psapi.dll");
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if (!psapi_module_handle)
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goto failed;
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psapi_EnumProcessModules =
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(tf_EnumProcessModules *) GetProcAddress (psapi_module_handle,
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"EnumProcessModules");
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psapi_GetModuleInformation =
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(tf_GetModuleInformation *) GetProcAddress (psapi_module_handle,
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"GetModuleInformation");
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psapi_GetModuleFileNameExA =
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(tf_GetModuleFileNameExA *) GetProcAddress (psapi_module_handle,
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"GetModuleFileNameExA");
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if (psapi_EnumProcessModules == NULL
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|| psapi_GetModuleInformation == NULL
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|| psapi_GetModuleFileNameExA == NULL)
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goto failed;
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}
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ok = (*psapi_EnumProcessModules) (hProcess,
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DllHandle, sizeof (HMODULE), &cbNeeded);
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if (!ok || !cbNeeded)
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goto failed;
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DllHandle = (HMODULE *) malloc (cbNeeded);
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if (!DllHandle)
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goto failed;
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ok = (*psapi_EnumProcessModules) (hProcess, DllHandle, cbNeeded, &cbNeeded);
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if (!ok)
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{
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free (DllHandle);
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goto failed;
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}
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for (i = 0; i < cbNeeded / sizeof (HMODULE); i++)
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{
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if (!(*psapi_GetModuleInformation) (hProcess,
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DllHandle[i], &mi, sizeof (mi)))
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{
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free (DllHandle);
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goto failed;
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}
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len = (*psapi_GetModuleFileNameExA) (hProcess,
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DllHandle[i], name_buf, MAX_PATH);
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if (len == 0)
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{
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free (DllHandle);
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goto failed;
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}
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if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
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{
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free (DllHandle);
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return strdup (name_buf);
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}
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}
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failed:
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return NULL;
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}
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