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* net.cc (get_ipv4fromreg_ipcnt): Rearrange to fetch all registry 

values at once using RtlQueryRegistryValues.
	(get_ipv4fromreg): Ditto.
This commit is contained in:
Corinna Vinschen 2011-04-19 08:59:30 +00:00
parent e5c91e1627
commit cbc26145e8
2 changed files with 89 additions and 66 deletions
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6
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,9 @@
2011-04-19 Corinna Vinschen <corinna@vinschen.de>
* net.cc (get_ipv4fromreg_ipcnt): Rearrange to fetch all registry
values at once using RtlQueryRegistryValues.
(get_ipv4fromreg): Ditto.
2011-04-19 Corinna Vinschen <corinna@vinschen.de>
* fhandler_registry.cc (fhandler_registry::fstat): Use RegQueryInfoKeyW.

149
winsup/cygwin/net.cc
View File

@ -49,6 +49,7 @@ details. */
#include "cygwin/in6.h"
#include "ifaddrs.h"
#include "tls_pbuf.h"
#include "ntdll.h"
#define _CYGWIN_IN_H
#include <resolv.h>
@ -1761,96 +1762,104 @@ get_flags (PIP_ADAPTER_ADDRESSES pap)
static ULONG
get_ipv4fromreg_ipcnt (const char *name)
{
HKEY key;
LONG ret;
char regkey[256], *c;
ULONG ifs = 1;
DWORD dhcp, size;
WCHAR regkey[256], *c;
c = wcpcpy (regkey, L"Tcpip\\Parameters\\Interfaces\\");
sys_mbstowcs (c, 220, name);
if (!NT_SUCCESS (RtlCheckRegistryKey (RTL_REGISTRY_SERVICES, regkey)))
return 0;
ULONG ifs = 1;
DWORD dhcp = 0;
UNICODE_STRING uipa = { 0, 0, NULL };
RTL_QUERY_REGISTRY_TABLE tab[3] = {
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOSTRING,
L"EnableDHCP", &dhcp, REG_NONE, NULL, 0 },
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND,
L"IPAddress", &uipa, REG_NONE, NULL, 0 },
{ NULL, 0, NULL, NULL, 0, NULL, 0 }
};
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)
{
if (ret != ERROR_FILE_NOT_FOUND)
debug_printf ("RegOpenKeyEx(%s), win32 error %ld", regkey, 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)
if (NT_SUCCESS (RtlQueryRegistryValues (RTL_REGISTRY_SERVICES, regkey, tab,
NULL, NULL))
&& uipa.Buffer)
{
char *ipa = (char *) alloca (size);
RegQueryValueEx (key, "IPAddress", NULL, NULL, (PBYTE) ipa, &size);
for (ifs = 0, c = ipa; *c; c += strlen (c) + 1)
if (dhcp == 0)
for (ifs = 0, c = uipa.Buffer; *c; c += wcslen (c) + 1)
ifs++;
RtlFreeUnicodeString (&uipa);
}
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;
WCHAR regkey[256], *c;
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)
c = wcpcpy (regkey, L"Tcpip\\Parameters\\Interfaces\\");
sys_mbstowcs (c, 220, name);
if (!NT_SUCCESS (RtlCheckRegistryKey (RTL_REGISTRY_SERVICES, regkey)))
return;
ULONG ifs;
DWORD dhcp = 0;
UNICODE_STRING udipa = { 0, 0, NULL };
UNICODE_STRING udsub = { 0, 0, NULL };
UNICODE_STRING uipa = { 0, 0, NULL };
UNICODE_STRING usub = { 0, 0, NULL };
RTL_QUERY_REGISTRY_TABLE tab[6] = {
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOSTRING,
L"EnableDHCP", &dhcp, REG_NONE, NULL, 0 },
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND,
L"DhcpIPAddress", &udipa, REG_NONE, NULL, 0 },
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND,
L"DhcpSubnetMask", &udsub, REG_NONE, NULL, 0 },
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND,
L"IPAddress", &uipa, REG_NONE, NULL, 0 },
{ NULL, RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND,
L"SubnetMask", &usub, REG_NONE, NULL, 0 },
{ NULL, 0, NULL, NULL, 0, NULL, 0 }
};
if (NT_SUCCESS (RtlQueryRegistryValues (RTL_REGISTRY_SERVICES, regkey, tab,
NULL, NULL)))
{
if (ret != ERROR_FILE_NOT_FOUND)
debug_printf ("RegOpenKeyEx(%s), win32 error %ld", regkey, 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)
# define addr ((struct sockaddr_in *) &ifp->ifa_addr)
# define mask ((struct sockaddr_in *) &ifp->ifa_netmask)
# define brdc ((struct sockaddr_in *) &ifp->ifa_brddstaddr)
# define inet_uton(u, a) \
{ \
char t[64]; \
sys_wcstombs (t, 64, (u)); \
cygwin_inet_aton (t, (a)); \
}
/* If DHCP is used, we have only one address. */
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);
if (udipa.Buffer)
inet_uton (udipa.Buffer, &addr->sin_addr);
if (udsub.Buffer)
inet_uton (udsub.Buffer, &mask->sin_addr);
}
else
{
if ((ret = RegQueryValueEx (key, "IPAddress", NULL, NULL, NULL,
&size)) == ERROR_SUCCESS)
if (uipa.Buffer)
{
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)
for (ifs = 0, c = uipa.Buffer; *c && ifs < idx;
c += wcslen (c) + 1)
ifs++;
if (*c)
cygwin_inet_aton (c, &addr->sin_addr);
inet_uton (c, &addr->sin_addr);
}
if ((ret = RegQueryValueEx (key, "SubnetMask", NULL, NULL, NULL,
&size)) == ERROR_SUCCESS)
if (usub.Buffer)
{
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)
for (ifs = 0, c = usub.Buffer; *c && ifs < idx;
c += wcslen (c) + 1)
ifs++;
if (*c)
cygwin_inet_aton (c, &mask->sin_addr);
inet_uton (c, &mask->sin_addr);
}
}
if (ifp->ifa_ifa.ifa_flags & IFF_BROADCAST)
@ -1860,8 +1869,16 @@ get_ipv4fromreg (struct ifall *ifp, const char *name, DWORD idx)
#undef addr
#undef mask
#undef brdc
#undef inet_uton
if (udipa.Buffer)
RtlFreeUnicodeString (&udipa);
if (udsub.Buffer)
RtlFreeUnicodeString (&udsub);
if (uipa.Buffer)
RtlFreeUnicodeString (&uipa);
if (usub.Buffer)
RtlFreeUnicodeString (&usub);
}
RegCloseKey (key);
}
static void