u_int32_t
libnet_get_ipaddr4(libnet_t *l)
{
long npflen = 0;
struct sockaddr_in sin;
struct npf_if_addr ipbuff;
memset(&sin,0,sizeof(sin));
memset(&ipbuff,0,sizeof(ipbuff));
npflen = sizeof(ipbuff);
if (PacketGetNetInfoEx(l->device, &ipbuff, &npflen))
{
sin = *(struct sockaddr_in *)&ipbuff.IPAddress;
}
return (sin.sin_addr.s_addr);
}
static int
pcap_add_if_win32(pcap_if_t **devlist, char *name, const char *desc,
char *errbuf)
{
pcap_if_t *curdev;
npf_if_addr if_addrs[MAX_NETWORK_ADDRESSES];
LONG if_addr_size;
int res = 0;
if_addr_size = MAX_NETWORK_ADDRESSES;
/*
* Add an entry for this interface, with no addresses.
*/
if (add_or_find_if(&curdev, devlist, (char *)name, 0, (char *)desc,
errbuf) == -1) {
/*
* Failure.
*/
return (-1);
}
/*
* Get the list of addresses for the interface.
*/
if (!PacketGetNetInfoEx((void *)name, if_addrs, &if_addr_size)) {
/*
* Failure.
*
* We don't return an error, because this can happen with
* NdisWan interfaces, and we want to supply them even
* if we can't supply their addresses.
*
* We return an entry with an empty address list.
*/
return (0);
}
/*
* Now add the addresses.
*/
while (if_addr_size-- > 0) {
/*
* "curdev" is an entry for this interface; add an entry for
* this address to its list of addresses.
*/
if(curdev == NULL)
break;
res = add_addr_to_list(curdev,
(struct sockaddr *)&if_addrs[if_addr_size].IPAddress,
(struct sockaddr *)&if_addrs[if_addr_size].SubnetMask,
(struct sockaddr *)&if_addrs[if_addr_size].Broadcast,
NULL,
errbuf);
if (res == -1) {
/*
* Failure.
*/
break;
}
}
return (res);
}
nbNetVmPortLocalAdapter *nbPacketProcessBase::GetListLocalAdapters()
{
char *Name;
const char *Description;
char *TempBuffer;
unsigned long NameLength;
nbNetVmPortLocalAdapter *CurrentDevice, **PtrToPreviousDevice;
// In case we already returned the interface list previously, let's delete the old one
DELETE_PTR(m_returnedDeviceList);
// This is needed for getting the space needed to contain the adapter names
PacketGetAdapterNames(NULL, &NameLength);
if (NameLength <= 0)
{
nbGetLastErrorEx(__FILE__, __FUNCTION__, __LINE__, NULL, m_errbuf, sizeof(m_errbuf));
return NULL;
}
TempBuffer = new char [NameLength];
if (TempBuffer == NULL)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Cannot allocate enough memory to list the adapters.");
return NULL;
}
if (!PacketGetAdapterNames( (PTSTR) TempBuffer, &NameLength))
{
nbGetLastErrorEx(__FILE__, __FUNCTION__, __LINE__, NULL, m_errbuf, sizeof(m_errbuf));
free(TempBuffer);
return NULL;
}
// "PacketGetAdapterNames()" returned a list of null-terminated ASCII interface name strings,
// terminated by a null string, followed by a list of null-terminated ASCII interface description
// strings, terminated by a null string.
// This means there are two ASCII nulls at the end of the first list.
//
// Find the end of the first list; that's the beginning of the second list.
Description = &TempBuffer[0];
while ( (*Description != '\0') || (*(Description + 1) != '\0') )
Description++;
// Found it - "desc" points to the first of the two nulls at the end of the list of names, so the
// first byte of the list of descriptions is two bytes after it.
Description += 2;
// Loop over the elements in the first list.
Name = &TempBuffer[0];
PtrToPreviousDevice= (nbNetVmPortLocalAdapter **) &m_returnedDeviceList;
while (*Name != '\0')
{
npf_if_addr AddressList[MAX_NETWORK_ADDRESSES];
long NumberOfAddrs;
CurrentDevice = new nbNetVmPortLocalAdapter;
if (CurrentDevice == NULL)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Cannot allocate enough memory to list the adapters.");
return NULL;
}
*PtrToPreviousDevice= CurrentDevice;
if (CurrentDevice->Initialize(Name, (char *) Description, 0) == nbFAILURE)
return NULL;
NumberOfAddrs= MAX_NETWORK_ADDRESSES;
// Add an entry for this interface.
// Get the list of addresses for the interface.
if (PacketGetNetInfoEx(Name, AddressList, &NumberOfAddrs) == 0)
{
// Failure. However, we don't return an error, because this can happen with
// NdisWan interfaces, and we want to list them even if we can't supply their addresses.
// So, we return an entry with an empty address list.
Name += strlen(Name) + 1;
Description += strlen(Description) + 1;
continue;
}
// Now add the addresses.
nbNetAddress **PtrToPreviousAddress= &(CurrentDevice->AddressList);
while (NumberOfAddrs-- > 0)
{
// Allocate the new entry and fill it in.
(*PtrToPreviousAddress)= new (nbNetAddress);
if ( (*PtrToPreviousAddress == NULL))
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Cannot allocate enough memory to list the adapters.");
return NULL;
}
(*PtrToPreviousAddress)->AddressFamily= AddressList[NumberOfAddrs].IPAddress.ss_family;
// Allocate the memory needed to keep address and netmask (if needed)
(*PtrToPreviousAddress)->Address= new char [128]; // 128 bytes should be enough
if ( (*PtrToPreviousAddress)->Address == NULL)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Cannot allocate enough memory to list the adapters.");
return NULL;
}
if ((*PtrToPreviousAddress)->AddressFamily == AF_INET)
{
(*PtrToPreviousAddress)->Netmask= new char [128]; // 128 bytes should be enough
if ( (*PtrToPreviousAddress)->Netmask == NULL)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Cannot allocate enough memory to list the adapters.");
return NULL;
}
}
// Now, let's copy the requested info in the previously allocated structures
if ((*PtrToPreviousAddress)->AddressFamily == AF_INET)
{
if (getnameinfo((struct sockaddr *) &AddressList[NumberOfAddrs].IPAddress, sizeof(struct sockaddr_in),
(*PtrToPreviousAddress)->Address, 128, NULL, NULL, NI_NUMERICHOST) != 0)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Error when getting the printable form of a network address.");
return NULL;
}
if (getnameinfo((struct sockaddr *) &AddressList[NumberOfAddrs].SubnetMask, sizeof(struct sockaddr_in),
(*PtrToPreviousAddress)->Netmask, 128, NULL, NULL, NI_NUMERICHOST) != 0)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Error when getting the printable form of a network address.");
return NULL;
}
}
else
{
if (getnameinfo((struct sockaddr *) &AddressList[NumberOfAddrs].IPAddress, sizeof(struct sockaddr_in6),
(*PtrToPreviousAddress)->Address, 128, NULL, NULL, NI_NUMERICHOST) != 0)
{
ssnprintf(m_errbuf, sizeof(m_errbuf), "Error when getting the printable form of a network address.");
return NULL;
}
//! \todo We have to copy the IPv6 prefix length: how to get it?
}
// Point to the next location to be filled in, in case a new address is present
PtrToPreviousAddress= &((*PtrToPreviousAddress)->Next);
}
Name += strlen(Name) + 1;
Description += strlen(Description) + 1;
// Saves a pointer to the previous device
PtrToPreviousDevice= (nbNetVmPortLocalAdapter **) &(CurrentDevice->Next);
}
free(TempBuffer);
return (nbNetVmPortLocalAdapter *) m_returnedDeviceList;
};