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#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock.h>
#include "wsh-int.h"
#include <windns.h>
#include "hesiod.h"
#include "pwd.h"
DWORD dwHesIndex; // for hes_to_bind
DWORD dwHesMailIndex; // for hes_getmailhost
DWORD dwHesServIndex; // for hes_getservbyname
DWORD dwHesPwNamIndex; // for hes_getpwnam;
DWORD dwHesPwUidIndex; // for hes_getpwuid
DWORD dwGhnIndex; // for rgethostbyname
DWORD dwGhaIndex; // for rgethostbyaddr
#define LISTSIZE 15
void FreeThreadLocalMemory();
void AllocateThreadLocalMemory();
void FreePasswdStruct(LPVOID lpvData);
void FreeHostentStruct(LPVOID lpvData);
BOOL
WINAPI
DllMain(
HINSTANCE hinstDLL, // handle to DLL module
DWORD fdwReason, // reason for calling function
LPVOID lpvReserved // reserved
)
{
switch(fdwReason)
{
case DLL_PROCESS_ATTACH:
if ((dwHesIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwHesMailIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwHesServIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwHesPwNamIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwHesPwUidIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwHesPwUidIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwGhnIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
if ((dwGhaIndex = TlsAlloc()) == TLS_OUT_OF_INDEXES)
return FALSE;
res_init_startup();
case DLL_THREAD_ATTACH:
// Initialize the TLS index for this thread.
AllocateThreadLocalMemory();
break;
case DLL_THREAD_DETACH:
// Release the allocated memory for this thread.
FreeThreadLocalMemory();
break;
case DLL_PROCESS_DETACH:
// Release the TLS index.
FreeThreadLocalMemory();
TlsFree(dwHesIndex);
TlsFree(dwHesMailIndex);
TlsFree(dwHesServIndex);
TlsFree(dwHesPwNamIndex);
TlsFree(dwHesPwUidIndex);
TlsFree(dwGhnIndex);
TlsFree(dwGhaIndex);
res_init_cleanup();
break;
}
return TRUE;
}
void AllocateThreadLocalMemory()
{
LPVOID lpvData;
lpvData = (LPVOID) LocalAlloc(LPTR, DNS_MAX_NAME_BUFFER_LENGTH);
if (lpvData != NULL)
TlsSetValue(dwHesIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct hes_postoffice));
if (lpvData != NULL)
TlsSetValue(dwHesMailIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct servent));
if (lpvData != NULL)
TlsSetValue(dwHesServIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct passwd));
if (lpvData != NULL)
TlsSetValue(dwHesPwNamIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct passwd));
if (lpvData != NULL)
TlsSetValue(dwHesPwUidIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct hostent));
if (lpvData != NULL)
TlsSetValue(dwGhnIndex, lpvData);
lpvData = (LPVOID) LocalAlloc(LPTR, sizeof(struct hostent));
if (lpvData != NULL)
TlsSetValue(dwGhaIndex, lpvData);
}
void FreeThreadLocalMemory()
{
LPVOID lpvData;
int i;
lpvData = TlsGetValue(dwHesIndex);
if (lpvData != NULL)
LocalFree((HLOCAL) lpvData);
// free hes_postoffice
lpvData = TlsGetValue(dwHesMailIndex);
if (lpvData)
{
struct hes_postoffice* p = (struct hes_postoffice*) lpvData;
if (p->po_type)
{
LocalFree(p->po_type);
p->po_type = NULL;
}
if (p->po_host)
{
LocalFree(p->po_host);
p->po_host = NULL;
}
if (p->po_name)
{
LocalFree(p->po_name);
p->po_name = NULL;
}
LocalFree((HLOCAL) lpvData);
}
// free servent
lpvData = TlsGetValue(dwHesServIndex);
if (lpvData)
{
struct servent* s = (struct servent*) lpvData;
if (s->s_name)
{
LocalFree(s->s_name);
s->s_name = NULL;
}
if (s->s_proto)
{
LocalFree(s->s_proto);
s->s_proto = NULL;
}
if (s->s_aliases)
{
for (i = 0; i<LISTSIZE; i++)
{
if (s->s_aliases[i])
{
LocalFree(s->s_aliases[i]);
s->s_aliases[i] = NULL;
}
}
LocalFree(s->s_aliases);
}
LocalFree((HLOCAL) lpvData);
}
// free struct passwd
lpvData = TlsGetValue(dwHesPwNamIndex);
FreePasswdStruct(lpvData);
lpvData = TlsGetValue(dwHesPwUidIndex);
FreePasswdStruct(lpvData);
// free struct hostent
lpvData = TlsGetValue(dwGhnIndex);
FreeHostentStruct(lpvData);
lpvData = TlsGetValue(dwGhaIndex);
FreeHostentStruct(lpvData);
}
void FreeHostentStruct(LPVOID lpvData)
{
if (lpvData)
{
int i = 0;
struct hostent* host = (struct hostent*) lpvData;
if (host->h_name)
LocalFree(host->h_name);
if (host->h_aliases)
{
while(host->h_aliases[i])
{
LocalFree(host->h_aliases[i]);
host->h_aliases[i] = NULL;
i++;
}
LocalFree(host->h_aliases);
}
if (host->h_addr_list)
{
i = 0;
while (host->h_addr_list[i])
{
LocalFree(host->h_addr_list[i]);
host->h_addr_list[i] = NULL;
i++;
}
LocalFree(host->h_addr_list);
}
LocalFree((HLOCAL) lpvData);
}
}
void FreePasswdStruct(LPVOID lpvData)
{
if (lpvData)
{
struct passwd* p = (struct passwd*) lpvData;
if (p->pw_name)
{
LocalFree(p->pw_name);
p->pw_name = NULL;
}
if (p->pw_passwd)
{
LocalFree(p->pw_passwd);
p->pw_passwd = NULL;
}
if (p->pw_comment)
{
LocalFree(p->pw_comment);
p->pw_comment = NULL;
}
if (p->pw_gecos)
{
LocalFree(p->pw_gecos);
p->pw_gecos = NULL;
}
if (p->pw_dir)
{
LocalFree(p->pw_dir);
p->pw_dir = NULL;
}
if (p->pw_shell)
{
LocalFree(p->pw_shell);
p->pw_shell = NULL;
}
LocalFree((HLOCAL) lpvData);
}
}
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