PlaneteCasio
/
libc
1
0
Fork 0
Code Issues 6 Pull Requests Releases Wiki Activity

* net.cc (get_flags): New static function to generate interface flags 

value.
	(get_ipv4fromreg_ipcnt): New static function to fetch number of
	configured IPv4 addresses for a given NIC from registry.
	(get_ipv4fromreg): New static function to fetch configured IPv4
	addresses for a given NIC from registry.
	(get_friendlyname): New static function to generate friendly name.
	(get_hwaddr): New static function to copy hardware address.
	(get_xp_ifs): Restructure slightly.  Add code to generate IPv4 entries
	entries for interfaces which are disconnected.
This commit is contained in:
Corinna Vinschen 2009-06-15 20:04:15 +00:00
parent a02f102db2
commit ea3923078a
2 changed files with 300 additions and 115 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,16 @@
2009-06-15 Corinna Vinschen <corinna@vinschen.de>
* net.cc (get_flags): New static function to generate interface flags
value.
(get_ipv4fromreg_ipcnt): New static function to fetch number of
configured IPv4 addresses for a given NIC from registry.
(get_ipv4fromreg): New static function to fetch configured IPv4
addresses for a given NIC from registry.
(get_friendlyname): New static function to generate friendly name.
(get_hwaddr): New static function to copy hardware address.
(get_xp_ifs): Restructure slightly. Add code to generate IPv4 entries
entries for interfaces which are disconnected.
2009-06-14 Christopher Faylor <me+cygwin@cgf.cx>
* errno.cc (errmap): Add mapping for ERROR_IO_INCOMPLETE.

402
winsup/cygwin/net.cc
View File

@ -1587,6 +1587,149 @@ struct ifall {
struct ifreq_frndlyname ifa_frndlyname;
};
static unsigned int
get_flags (PIP_ADAPTER_ADDRESSES pap)
{
unsigned int flags = IFF_UP;
if (pap->IfType == IF_TYPE_SOFTWARE_LOOPBACK)
flags |= IFF_LOOPBACK;
else if (pap->IfType == IF_TYPE_PPP)
flags |= IFF_POINTOPOINT;
if (!(pap->Flags & IP_ADAPTER_NO_MULTICAST))
flags |= IFF_MULTICAST;
if (pap->OperStatus == IfOperStatusUp
|| pap->OperStatus == IfOperStatusUnknown)
flags |= IFF_RUNNING;
if (pap->OperStatus != IfOperStatusLowerLayerDown)
flags |= IFF_LOWER_UP;
if (pap->OperStatus == IfOperStatusDormant)
flags |= IFF_DORMANT;
return flags;
}
static ULONG
get_ipv4fromreg_ipcnt (const char *name)
{
HKEY key;
LONG ret;
char regkey[256], *c;
ULONG ifs = 1;
DWORD dhcp, size;
c = stpcpy (regkey, "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\"
"Parameters\\Interfaces\\");
stpcpy (c, name);
if ((ret = RegOpenKeyEx (HKEY_LOCAL_MACHINE, regkey, 0, KEY_READ,
&key)) != ERROR_SUCCESS)
{
debug_printf ("RegOpenKeyEx(%s), win32 error %ld", ret);
return 0;
}
/* If DHCP is used, we have only one address. */
if ((ret = RegQueryValueEx (key, "EnableDHCP", NULL, NULL, (PBYTE) &dhcp,
(size = sizeof dhcp, &size))) == ERROR_SUCCESS
&& dhcp == 0
&& (ret = RegQueryValueEx (key, "IPAddress", NULL, NULL, NULL,
&size)) == ERROR_SUCCESS)
{
char *ipa = (char *) alloca (size);
RegQueryValueEx (key, "IPAddress", NULL, NULL, (PBYTE) ipa, &size);
for (ifs = 0, c = ipa; *c; c += strlen (c) + 1)
ifs++;
}
RegCloseKey (key);
return ifs;
}
static void
get_ipv4fromreg (struct ifall *ifp, const char *name, DWORD idx)
{
HKEY key;
LONG ret;
char regkey[256], *c;
DWORD ifs;
DWORD dhcp, size;
c = stpcpy (regkey, "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\"
"Parameters\\Interfaces\\");
stpcpy (c, name);
if ((ret = RegOpenKeyEx (HKEY_LOCAL_MACHINE, regkey, 0, KEY_READ, &key))
!= ERROR_SUCCESS)
{
debug_printf ("RegOpenKeyEx(%s), win32 error %ld", ret);
return;
}
/* If DHCP is used, we have only one address. */
if ((ret = RegQueryValueEx (key, "EnableDHCP", NULL, NULL, (PBYTE) &dhcp,
(size = sizeof dhcp, &size))) == ERROR_SUCCESS)
{
#define addr ((struct sockaddr_in *) &ifp->ifa_addr)
#define mask ((struct sockaddr_in *) &ifp->ifa_netmask)
#define brdc ((struct sockaddr_in *) &ifp->ifa_brddstaddr)
if (dhcp)
{
if ((ret = RegQueryValueEx (key, "DhcpIPAddress", NULL, NULL,
(PBYTE) regkey, (size = 256, &size)))
== ERROR_SUCCESS)
cygwin_inet_aton (regkey, &addr->sin_addr);
if ((ret = RegQueryValueEx (key, "DhcpSubnetMask", NULL, NULL,
(PBYTE) regkey, (size = 256, &size)))
== ERROR_SUCCESS)
cygwin_inet_aton (regkey, &mask->sin_addr);
}
else
{
if ((ret = RegQueryValueEx (key, "IPAddress", NULL, NULL, NULL,
&size)) == ERROR_SUCCESS)
{
char *ipa = (char *) alloca (size);
RegQueryValueEx (key, "IPAddress", NULL, NULL, (PBYTE) ipa, &size);
for (ifs = 0, c = ipa; *c && ifs < idx; c += strlen (c) + 1)
ifs++;
if (*c)
cygwin_inet_aton (c, &addr->sin_addr);
}
if ((ret = RegQueryValueEx (key, "SubnetMask", NULL, NULL, NULL,
&size)) == ERROR_SUCCESS)
{
char *ipa = (char *) alloca (size);
RegQueryValueEx (key, "SubnetMask", NULL, NULL, (PBYTE) ipa, &size);
for (ifs = 0, c = ipa; *c && ifs < idx; c += strlen (c) + 1)
ifs++;
if (*c)
cygwin_inet_aton (c, &mask->sin_addr);
}
}
if (ifp->ifa_ifa.ifa_flags & IFF_BROADCAST)
brdc->sin_addr.s_addr = (addr->sin_addr.s_addr
& mask->sin_addr.s_addr)
| ~mask->sin_addr.s_addr;
#undef addr
#undef mask
#undef brdc
}
RegCloseKey (key);
}
static void
get_friendlyname (struct ifall *ifp, PIP_ADAPTER_ADDRESSES pap)
{
struct ifreq_frndlyname *iff = (struct ifreq_frndlyname *)
&ifp->ifa_frndlyname;
iff->ifrf_len = sys_wcstombs (iff->ifrf_friendlyname,
IFRF_FRIENDLYNAMESIZ,
pap->FriendlyName);
}
static void
get_hwaddr (struct ifall *ifp, PIP_ADAPTER_ADDRESSES pap)
{
for (UINT i = 0; i < IFHWADDRLEN; ++i)
if (i >= pap->PhysicalAddressLength)
ifp->ifa_hwaddr.sa_data[i] = '\0';
else
ifp->ifa_hwaddr.sa_data[i] = pap->PhysicalAddress[i];
}
/*
* Get network interfaces XP SP1 and above.
* Use IP Helper function GetAdaptersAddresses.
@ -1605,7 +1748,15 @@ get_xp_ifs (ULONG family)
goto done;
for (pap = pa0; pap; pap = pap->Next)
for (pua = pap->FirstUnicastAddress; pua; pua = pua->Next)
if (!pap->FirstUnicastAddress)
{
/* FirstUnicastAddress is NULL for interfaces which are disconnected.
Fetch number of configured IPva addresses from registry and
store in an unused member of the adapter addresses structure. */
pap->Ipv6IfIndex = get_ipv4fromreg_ipcnt (pap->AdapterName);
cnt += pap->Ipv6IfIndex;
}
else for (pua = pap->FirstUnicastAddress; pua; pua = pua->Next)
++cnt;
if (!(ifret = (struct ifall *) calloc (cnt, sizeof (struct ifall))))
@ -1614,125 +1765,146 @@ get_xp_ifs (ULONG family)
for (pap = pa0; pap; pap = pap->Next)
{
int idx = 0;
for (pua = pap->FirstUnicastAddress; pua; pua = pua->Next)
{
struct sockaddr *sa = (struct sockaddr *) pua->Address.lpSockaddr;
DWORD idx = 0;
if (!pap->FirstUnicastAddress)
for (idx = 0; idx < pap->Ipv6IfIndex; ++idx)
{
/* Next in chain */
ifp->ifa_ifa.ifa_next = (struct ifaddrs *) &ifp[1].ifa_ifa;
/* Interface name */
if (idx)
__small_sprintf (ifp->ifa_name, "%s:%u", pap->AdapterName, idx);
else
strcpy (ifp->ifa_name, pap->AdapterName);
ifp->ifa_ifa.ifa_name = ifp->ifa_name;
/* Flags */
ifp->ifa_ifa.ifa_flags = get_flags (pap);
if (pap->IfType != IF_TYPE_PPP)
ifp->ifa_ifa.ifa_flags |= IFF_BROADCAST;
/* Address */
ifp->ifa_addr.ss_family = AF_INET;
ifp->ifa_ifa.ifa_addr = (struct sockaddr *) &ifp->ifa_addr;
/* Broadcast/Destination address */
ifp->ifa_brddstaddr.ss_family = AF_INET;
ifp->ifa_ifa.ifa_dstaddr = NULL;
/* Netmask */
ifp->ifa_netmask.ss_family = AF_INET;
ifp->ifa_ifa.ifa_netmask = (struct sockaddr *) &ifp->ifa_netmask;
/* Try to fetch real IPv4 address information from registry. */
get_ipv4fromreg (ifp, pap->AdapterName, idx);
/* Hardware address */
get_hwaddr (ifp, pap);
/* Metric */
ifp->ifa_metric = 1;
/* MTU */
ifp->ifa_mtu = pap->Mtu;
/* Interface index */
ifp->ifa_ifindex = pap->IfIndex;
/* Friendly name */
get_friendlyname (ifp, pap);
++ifp;
}
else
for (idx = 0, pua = pap->FirstUnicastAddress; pua;
++idx, pua = pua->Next)
{
struct sockaddr *sa = (struct sockaddr *) pua->Address.lpSockaddr;
# define sin ((struct sockaddr_in *) sa)
# define sin6 ((struct sockaddr_in6 *) sa)
size_t sa_size = (sa->sa_family == AF_INET6
? sizeof *sin6 : sizeof *sin);
/* Next in chain */
ifp->ifa_ifa.ifa_next = (struct ifaddrs *) &ifp[1].ifa_ifa;
/* Interface name */
if (!idx)
strcpy (ifp->ifa_name, pap->AdapterName);
else
__small_sprintf (ifp->ifa_name, "%s:%u", pap->AdapterName, idx);
ifp->ifa_ifa.ifa_name = ifp->ifa_name;
++idx;
/* Flags */
ifp->ifa_ifa.ifa_flags = IFF_UP;
if (pap->IfType == IF_TYPE_SOFTWARE_LOOPBACK)
ifp->ifa_ifa.ifa_flags |= IFF_LOOPBACK;
else if (pap->IfType == IF_TYPE_PPP)
ifp->ifa_ifa.ifa_flags |= IFF_POINTOPOINT;
else if (sa->sa_family == AF_INET)
ifp->ifa_ifa.ifa_flags |= IFF_BROADCAST;
if (!(pap->Flags & IP_ADAPTER_NO_MULTICAST))
ifp->ifa_ifa.ifa_flags |= IFF_MULTICAST;
if (pap->OperStatus == IfOperStatusUp
|| pap->OperStatus == IfOperStatusUnknown)
ifp->ifa_ifa.ifa_flags |= IFF_RUNNING;
if (pap->OperStatus != IfOperStatusLowerLayerDown)
ifp->ifa_ifa.ifa_flags |= IFF_LOWER_UP;
if (pap->OperStatus == IfOperStatusDormant)
ifp->ifa_ifa.ifa_flags |= IFF_DORMANT;
if (sa->sa_family == AF_INET)
{
ULONG hwaddr[2], hwlen = 6;
if (SendARP (sin->sin_addr.s_addr, 0, hwaddr, &hwlen))
ifp->ifa_ifa.ifa_flags |= IFF_NOARP;
}
/* Address */
memcpy (&ifp->ifa_addr, sa, sa_size);
ifp->ifa_ifa.ifa_addr = (struct sockaddr *) &ifp->ifa_addr;
/* Netmask */
int prefix = ip_addr_prefix (pua, pap->FirstPrefix);
switch (sa->sa_family)
{
case AF_INET:
if_sin = (struct sockaddr_in *) &ifp->ifa_netmask;
if_sin->sin_addr.s_addr = htonl (UINT32_MAX << (32 - prefix));
if_sin->sin_family = AF_INET;
break;
case AF_INET6:
if_sin6 = (struct sockaddr_in6 *) &ifp->ifa_netmask;
for (cnt = 0; cnt < 4 && prefix; ++cnt, prefix -= 32)
if_sin6->sin6_addr.s6_addr32[cnt] = UINT32_MAX;
if (prefix < 32)
if_sin6->sin6_addr.s6_addr32[cnt] <<= 32 - prefix;
break;
}
ifp->ifa_ifa.ifa_netmask = (struct sockaddr *) &ifp->ifa_netmask;
if (pap->IfType == IF_TYPE_PPP)
{
/* Destination address */
if (sa->sa_family == AF_INET)
{
if_sin = (struct sockaddr_in *) &ifp->ifa_brddstaddr;
if_sin->sin_addr.s_addr = get_routedst (pap->IfIndex);
if_sin->sin_family = AF_INET;
}
else
/* FIXME: No official way to get the dstaddr for ipv6? */
memcpy (&ifp->ifa_addr, sa, sa_size);
ifp->ifa_ifa.ifa_dstaddr = (struct sockaddr *)
&ifp->ifa_brddstaddr;
}
else
{
/* Broadcast address */
if (sa->sa_family == AF_INET)
{
if_sin = (struct sockaddr_in *) &ifp->ifa_brddstaddr;
uint32_t mask =
((struct sockaddr_in *) &ifp->ifa_netmask)->sin_addr.s_addr;
if_sin->sin_addr.s_addr = (sin->sin_addr.s_addr & mask) | ~mask;
if_sin->sin_family = AF_INET;
ifp->ifa_ifa.ifa_broadaddr = (struct sockaddr *)
&ifp->ifa_brddstaddr;
}
else /* No IPv6 broadcast */
ifp->ifa_ifa.ifa_broadaddr = NULL;
}
/* Hardware address */
for (UINT i = 0; i < IFHWADDRLEN; ++i)
if (i >= pap->PhysicalAddressLength)
ifp->ifa_hwaddr.sa_data[i] = '\0';
size_t sa_size = (sa->sa_family == AF_INET6
? sizeof *sin6 : sizeof *sin);
/* Next in chain */
ifp->ifa_ifa.ifa_next = (struct ifaddrs *) &ifp[1].ifa_ifa;
/* Interface name */
if (idx && sa->sa_family == AF_INET)
__small_sprintf (ifp->ifa_name, "%s:%u", pap->AdapterName, idx);
else
ifp->ifa_hwaddr.sa_data[i] = pap->PhysicalAddress[i];
/* Metric */
if (wincap.has_gaa_on_link_prefix ())
ifp->ifa_metric = (sa->sa_family == AF_INET
? ((PIP_ADAPTER_ADDRESSES_LH) pap)->Ipv4Metric
: ((PIP_ADAPTER_ADDRESSES_LH) pap)->Ipv6Metric);
else
ifp->ifa_metric = 1;
/* MTU */
ifp->ifa_mtu = pap->Mtu;
/* Interface index */
ifp->ifa_ifindex = pap->IfIndex;
/* Friendly name */
struct ifreq_frndlyname *iff = (struct ifreq_frndlyname *)
&ifp->ifa_frndlyname;
iff->ifrf_len = sys_wcstombs (iff->ifrf_friendlyname,
IFRF_FRIENDLYNAMESIZ,
pap->FriendlyName);
++ifp;
strcpy (ifp->ifa_name, pap->AdapterName);
ifp->ifa_ifa.ifa_name = ifp->ifa_name;
/* Flags */
ifp->ifa_ifa.ifa_flags = get_flags (pap);
if (sa->sa_family == AF_INET
&& pap->IfType != IF_TYPE_SOFTWARE_LOOPBACK
&& pap->IfType != IF_TYPE_PPP)
ifp->ifa_ifa.ifa_flags |= IFF_BROADCAST;
if (sa->sa_family == AF_INET)
{
ULONG hwaddr[2], hwlen = 6;
if (SendARP (sin->sin_addr.s_addr, 0, hwaddr, &hwlen))
ifp->ifa_ifa.ifa_flags |= IFF_NOARP;
}
/* Address */
memcpy (&ifp->ifa_addr, sa, sa_size);
ifp->ifa_ifa.ifa_addr = (struct sockaddr *) &ifp->ifa_addr;
/* Netmask */
int prefix = ip_addr_prefix (pua, pap->FirstPrefix);
switch (sa->sa_family)
{
case AF_INET:
if_sin = (struct sockaddr_in *) &ifp->ifa_netmask;
if_sin->sin_addr.s_addr = htonl (UINT32_MAX << (32 - prefix));
if_sin->sin_family = AF_INET;
break;
case AF_INET6:
if_sin6 = (struct sockaddr_in6 *) &ifp->ifa_netmask;
for (cnt = 0; cnt < 4 && prefix; ++cnt, prefix -= 32)
if_sin6->sin6_addr.s6_addr32[cnt] = UINT32_MAX;
if (prefix < 32)
if_sin6->sin6_addr.s6_addr32[cnt] <<= 32 - prefix;
break;
}
ifp->ifa_ifa.ifa_netmask = (struct sockaddr *) &ifp->ifa_netmask;
if (pap->IfType == IF_TYPE_PPP)
{
/* Destination address */
if (sa->sa_family == AF_INET)
{
if_sin = (struct sockaddr_in *) &ifp->ifa_brddstaddr;
if_sin->sin_addr.s_addr = get_routedst (pap->IfIndex);
if_sin->sin_family = AF_INET;
}
else
/* FIXME: No official way to get the dstaddr for ipv6? */
memcpy (&ifp->ifa_addr, sa, sa_size);
ifp->ifa_ifa.ifa_dstaddr = (struct sockaddr *)
&ifp->ifa_brddstaddr;
}
else
{
/* Broadcast address */
if (sa->sa_family == AF_INET)
{
if_sin = (struct sockaddr_in *) &ifp->ifa_brddstaddr;
uint32_t mask =
((struct sockaddr_in *) &ifp->ifa_netmask)->sin_addr.s_addr;
if_sin->sin_addr.s_addr = (sin->sin_addr.s_addr & mask)
| ~mask;
if_sin->sin_family = AF_INET;
ifp->ifa_ifa.ifa_broadaddr = (struct sockaddr *)
&ifp->ifa_brddstaddr;
}
else /* No IPv6 broadcast */
ifp->ifa_ifa.ifa_broadaddr = NULL;
}
/* Hardware address */
get_hwaddr (ifp, pap);
/* Metric */
if (wincap.has_gaa_on_link_prefix ())
ifp->ifa_metric = (sa->sa_family == AF_INET
? ((PIP_ADAPTER_ADDRESSES_LH) pap)->Ipv4Metric
: ((PIP_ADAPTER_ADDRESSES_LH) pap)->Ipv6Metric);
else
ifp->ifa_metric = 1;
/* MTU */
ifp->ifa_mtu = pap->Mtu;
/* Interface index */
ifp->ifa_ifindex = pap->IfIndex;
/* Friendly name */
get_friendlyname (ifp, pap);
++ifp;
# undef sin
# undef sin6
}
}
}
/* Since every entry is set to the next entry, the last entry points to an
invalid next entry now. Fix it retroactively. */