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Enable Nmap, Nping to use Npcap over Winpcap if available.

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This commit is contained in:
dmiller
2016-06-14 14:16:46 +00:00
parent 7a9ab13bee
commit 67fd101b01
11 changed files with 233 additions and 22 deletions
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95
libdnet-stripped/src/intf-win32.c
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@@ -25,6 +25,8 @@
#include <Packet32.h>
#include <Ntddndis.h>
int g_has_npcap_loopback = 0;
struct ifcombo {
struct {
DWORD ipv4;
@@ -210,6 +212,98 @@ _adapter_address_to_entry(intf_t *intf, IP_ADAPTER_ADDRESSES *a,
entry->intf_len = (u_int) ((u_char *)ap - (u_char *)entry);
}
#ifdef _X86_
#define NPCAP_SOFTWARE_REGISTRY_KEY "SOFTWARE\\Npcap"
#else // AMD64
#define NPCAP_SOFTWARE_REGISTRY_KEY "SOFTWARE\\Wow6432Node\\Npcap"
#endif
int intf_get_loopback_name(char *buffer, int buf_size)
{
HKEY hKey;
DWORD type;
int size = buf_size;
int res = 0;
memset(buffer, 0, buf_size);
#ifndef _X86_
Wow64EnableWow64FsRedirection(FALSE);
#endif
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, NPCAP_SOFTWARE_REGISTRY_KEY, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
{
if (RegQueryValueExA(hKey, "Loopback", 0, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS && type == REG_SZ)
{
res = 1;
}
else
{
res = 0;
}
RegCloseKey(hKey);
}
else
{
res = 0;
}
#ifndef _X86_
Wow64EnableWow64FsRedirection(TRUE);
#endif
return res;
}
static IP_ADAPTER_ADDRESSES*
_update_tables_for_npcap_loopback(IP_ADAPTER_ADDRESSES *p)
{
IP_ADAPTER_ADDRESSES *a_prev = NULL;
IP_ADAPTER_ADDRESSES *a;
IP_ADAPTER_ADDRESSES *a_original_loopback_prev = NULL;
IP_ADAPTER_ADDRESSES *a_original_loopback = NULL;
IP_ADAPTER_ADDRESSES *a_npcap_loopback = NULL;
char npcap_loopback_name[1024];
int has_npcap_loopback = 0;
g_has_npcap_loopback = has_npcap_loopback = intf_get_loopback_name(npcap_loopback_name, 1024);
if (has_npcap_loopback == 0)
return p;
if (!p)
return p;
for (a = p; a != NULL; a = a->Next) {
if (a->IfType == IF_TYPE_SOFTWARE_LOOPBACK) {
a_original_loopback = a;
a_original_loopback_prev = a_prev;
}
else if (strcmp(a->AdapterName, npcap_loopback_name + strlen("\\Device\\")) == 0) {
a_npcap_loopback = a;
}
a_prev = a;
}
if (!a_original_loopback || !a_npcap_loopback)
return p;
a_npcap_loopback->IfType = a_original_loopback->IfType;
a_npcap_loopback->FirstUnicastAddress = a_original_loopback->FirstUnicastAddress;
a_npcap_loopback->FirstPrefix = a_original_loopback->FirstPrefix;
memset(a_npcap_loopback->PhysicalAddress, 0, ETH_ADDR_LEN);
if (a_original_loopback_prev) {
a_original_loopback_prev->Next = a_original_loopback_prev->Next->Next;
return p;
}
else if (a_original_loopback == p) {
return a_original_loopback->Next;
}
else {
return p;
}
}
static int
_refresh_tables(intf_t *intf)
{
@@ -245,6 +339,7 @@ _refresh_tables(intf_t *intf)
free(p);
return (-1);
}
p = _update_tables_for_npcap_loopback(p);
intf->iftable = p;
/*