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LocalIP (Windows): detect default route

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This commit is contained in:
李通洲
2023-07-17 16:15:41 +08:00
parent 68f71c5421
commit 1e57c4c088
2 changed files with 38 additions and 4 deletions
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src/detection/localip/localip.h
+4
View File
@@ -12,6 +12,10 @@ typedef struct FFLocalIpResult
FFstrbuf ipv6;
FFstrbuf mac;
bool defaultRoute;
#ifdef _WIN32
uint32_t ifIndex;
#endif
} FFLocalIpResult;
const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results);
src/detection/localip/localip_windows.c
+34 -4
View File
@@ -6,7 +6,34 @@
#include "util/windows/unicode.h"
#include "localip.h"
static void addNewIp(FFlist* list, const char* name, const char* value, int type, bool newIp)
static void setDefaultRoute(FFlist* ips)
{
ULONG size = 0;
if (GetIpForwardTable(NULL, &size, TRUE) != ERROR_INSUFFICIENT_BUFFER)
return;
FF_AUTO_FREE MIB_IPFORWARDTABLE* pIpForwardTable = (MIB_IPFORWARDTABLE*) malloc(size);
if (GetIpForwardTable(pIpForwardTable, &size, TRUE) != ERROR_SUCCESS)
return;
for (uint32_t i = 0; i < pIpForwardTable->dwNumEntries; ++i)
{
MIB_IPFORWARDROW* ipForwardRow = &pIpForwardTable->table[i];
if (ipForwardRow->dwForwardDest == 0 && ipForwardRow->dwForwardMask == 0)
{
FF_LIST_FOR_EACH(FFLocalIpResult, ip, *ips)
{
if (ip->ifIndex == ipForwardRow->dwForwardIfIndex)
{
ip->defaultRoute = true;
break;
}
}
}
}
}
static void addNewIp(FFlist* list, const char* name, const char* value, int type, bool newIp, uint32_t ifIndex)
{
FFLocalIpResult* ip = NULL;
@@ -18,6 +45,7 @@ static void addNewIp(FFlist* list, const char* name, const char* value, int type
ffStrbufInit(&ip->ipv6);
ffStrbufInit(&ip->mac);
ip->defaultRoute = false;
ip->ifIndex = ifIndex;
}
else
{
@@ -88,7 +116,7 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)
uint8_t* ptr = adapter->PhysicalAddress;
snprintf(addressBuffer, sizeof(addressBuffer), "%02x:%02x:%02x:%02x:%02x:%02x",
ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5]);
addNewIp(results, name, addressBuffer, -1, newIp);
addNewIp(results, name, addressBuffer, -1, newIp, adapter->IfIndex);
newIp = false;
}
@@ -99,7 +127,7 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)
SOCKADDR_IN* ipv4 = (SOCKADDR_IN*) ifa->Address.lpSockaddr;
char addressBuffer[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &ipv4->sin_addr, addressBuffer, INET_ADDRSTRLEN);
addNewIp(results, name, addressBuffer, AF_INET, newIp);
addNewIp(results, name, addressBuffer, AF_INET, newIp, adapter->IfIndex);
newIp = false;
}
else if (ifa->Address.lpSockaddr->sa_family == AF_INET6)
@@ -107,11 +135,13 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)
SOCKADDR_IN6* ipv6 = (SOCKADDR_IN6*) ifa->Address.lpSockaddr;
char addressBuffer[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &ipv6->sin6_addr, addressBuffer, INET6_ADDRSTRLEN);
addNewIp(results, name, addressBuffer, AF_INET6, newIp);
addNewIp(results, name, addressBuffer, AF_INET6, newIp, adapter->IfIndex);
newIp = false;
}
}
}
setDefaultRoute(results);
return NULL;
}