diff options
Diffstat (limited to 'src/util/win.cc')
| -rw-r--r-- | src/util/win.cc | 1266 |
1 files changed, 1266 insertions, 0 deletions
diff --git a/src/util/win.cc b/src/util/win.cc new file mode 100644 index 0000000..1f66072 --- /dev/null +++ b/src/util/win.cc @@ -0,0 +1,1266 @@ +/*
+ This file is part of GNUnet.
+ (C) 2001, 2002, 2003, 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 2, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file util/win.cc
+ * @brief Helper functions for MS Windows in C++
+ * @author Nils Durner
+ */
+
+#ifndef _WIN_CC
+#define _WIN_CC
+
+#include "winproc.h"
+#include "platform.h"
+#include "gnunet_common.h"
+#include "gnunet_connection_lib.h"
+
+#include <list>
+using namespace std;
+#include <ntdef.h>
+
+#ifndef INHERITED_ACE
+#define INHERITED_ACE 0x10
+#endif
+
+extern "C" {
+
+int plibc_conv_to_win_path(const char *pszUnix, char *pszWindows);
+
+#define _IP_ADAPTER_UNICAST_ADDRESS_HEAD \
+ union { \
+ struct { \
+ ULONG Length; \
+ DWORD Flags; \
+ }; \
+ }; \
+
+#define _IP_ADAPTER_UNICAST_ADDRESS_BASE \
+ SOCKET_ADDRESS Address; \
+ IP_PREFIX_ORIGIN PrefixOrigin; \
+ IP_SUFFIX_ORIGIN SuffixOrigin; \
+ IP_DAD_STATE DadState; \
+ ULONG ValidLifetime; \
+ ULONG PreferredLifetime; \
+ ULONG LeaseLifetime;
+
+#define _IP_ADAPTER_UNICAST_ADDRESS_ADD_VISTA \
+ UINT8 OnLinkPrefixLength;
+
+
+#define _IP_ADAPTER_UNICAST_ADDRESS_DEFINE(suffix,addition) \
+typedef struct _IP_ADAPTER_UNICAST_ADDRESS##suffix { \
+ _IP_ADAPTER_UNICAST_ADDRESS_HEAD \
+ struct _IP_ADAPTER_UNICAST_ADDRESS##suffix *Next; \
+ _IP_ADAPTER_UNICAST_ADDRESS_BASE \
+ addition \
+} IP_ADAPTER_UNICAST_ADDRESS##suffix, *PIP_ADAPTER_UNICAST_ADDRESS##suffix;
+
+/* _IP_ADAPTER_UNICAST_ADDRESS_DEFINE(,) defined in w32api headers */
+_IP_ADAPTER_UNICAST_ADDRESS_DEFINE(_VISTA,_IP_ADAPTER_UNICAST_ADDRESS_ADD_VISTA)
+
+
+typedef struct _IP_ADAPTER_WINS_SERVER_ADDRESS {
+ union {
+ ULONGLONG Alignment;
+ struct {
+ ULONG Length;
+ DWORD Reserved;
+ };
+ };
+ struct _IP_ADAPTER_WINS_SERVER_ADDRESS *Next;
+ SOCKET_ADDRESS Address;
+} IP_ADAPTER_WINS_SERVER_ADDRESS, *PIP_ADAPTER_WINS_SERVER_ADDRESS, *PIP_ADAPTER_WINS_SERVER_ADDRESS_LH;
+
+typedef struct _IP_ADAPTER_GATEWAY_ADDRESS {
+ union {
+ ULONGLONG Alignment;
+ struct {
+ ULONG Length;
+ DWORD Reserved;
+ };
+ };
+ struct _IP_ADAPTER_GATEWAY_ADDRESS *Next;
+ SOCKET_ADDRESS Address;
+} IP_ADAPTER_GATEWAY_ADDRESS, *PIP_ADAPTER_GATEWAY_ADDRESS, *PIP_ADAPTER_GATEWAY_ADDRESS_LH;
+
+typedef UINT32 NET_IF_COMPARTMENT_ID;
+typedef GUID NET_IF_NETWORK_GUID;
+
+typedef enum _NET_IF_CONNECTION_TYPE {
+ NET_IF_CONNECTION_DEDICATED = 1,
+ NET_IF_CONNECTION_PASSIVE,
+ NET_IF_CONNECTION_DEMAND,
+ NET_IF_CONNECTION_MAXIMUM
+} NET_IF_CONNECTION_TYPE, *PNET_IF_CONNECTION_TYPE;
+
+typedef enum {
+ TUNNEL_TYPE_NONE = 0,
+ TUNNEL_TYPE_OTHER,
+ TUNNEL_TYPE_DIRECT,
+ TUNNEL_TYPE_6TO4,
+ TUNNEL_TYPE_ISATAP,
+ TUNNEL_TYPE_TEREDO,
+ TUNNEL_TYPE_IPHTTPS
+} TUNNEL_TYPE, *PTUNNEL_TYPE;
+
+/*
+A DUID consists of a two-octet type code represented in network byte
+ order, followed by a variable number of octets that make up the
+ actual identifier. A DUID can be no more than 128 octets long (not
+ including the type code).
+*/
+#define MAX_DHCPV6_DUID_LENGTH 130
+
+typedef union _NET_LUID {
+ ULONG64 Value;
+ struct {
+ ULONG64 Reserved :24;
+ ULONG64 NetLuidIndex :24;
+ ULONG64 IfType :16;
+ } Info;
+} NET_LUID, *PNET_LUID, IF_LUID;
+
+#define MAX_DNS_SUFFIX_STRING_LENGTH 246
+
+typedef struct _IP_ADAPTER_DNS_SUFFIX {
+ struct _IP_ADAPTER_DNS_SUFFIX *Next;
+ WCHAR String[MAX_DNS_SUFFIX_STRING_LENGTH];
+} IP_ADAPTER_DNS_SUFFIX, *PIP_ADAPTER_DNS_SUFFIX;
+
+
+
+#define _IP_ADAPTER_ADDRESSES_HEAD \
+ union { \
+ ULONGLONG Alignment; \
+ struct { \
+ ULONG Length; \
+ DWORD IfIndex; \
+ }; \
+ };
+
+#define _IP_ADAPTER_ADDRESSES_BASE \
+ PCHAR AdapterName; \
+ PIP_ADAPTER_UNICAST_ADDRESS FirstUnicastAddress; \
+ PIP_ADAPTER_ANYCAST_ADDRESS FirstAnycastAddress; \
+ PIP_ADAPTER_MULTICAST_ADDRESS FirstMulticastAddress; \
+ PIP_ADAPTER_DNS_SERVER_ADDRESS FirstDnsServerAddress; \
+ PWCHAR DnsSuffix; \
+ PWCHAR Description; \
+ PWCHAR FriendlyName; \
+ BYTE PhysicalAddress[MAX_ADAPTER_ADDRESS_LENGTH]; \
+ DWORD PhysicalAddressLength; \
+ DWORD Flags; \
+ DWORD Mtu; \
+ DWORD IfType; \
+ IF_OPER_STATUS OperStatus;
+
+#define _IP_ADAPTER_ADDRESSES_ADD_XPSP1 \
+ DWORD Ipv6IfIndex; \
+ DWORD ZoneIndices[16]; \
+ PIP_ADAPTER_PREFIX FirstPrefix; \
+
+
+#define _IP_ADAPTER_ADDRESSES_ADD_VISTA \
+ _IP_ADAPTER_ADDRESSES_ADD_XPSP1 \
+ ULONG64 TransmitLinkSpeed; \
+ ULONG64 ReceiveLinkSpeed; \
+ PIP_ADAPTER_WINS_SERVER_ADDRESS_LH FirstWinsServerAddress; \
+ PIP_ADAPTER_GATEWAY_ADDRESS_LH FirstGatewayAddress; \
+ ULONG Ipv4Metric; \
+ ULONG Ipv6Metric; \
+ IF_LUID Luid; \
+ SOCKET_ADDRESS Dhcpv4Server; \
+ NET_IF_COMPARTMENT_ID CompartmentId; \
+ NET_IF_NETWORK_GUID NetworkGuid; \
+ NET_IF_CONNECTION_TYPE ConnectionType; \
+ TUNNEL_TYPE TunnelType; \
+ SOCKET_ADDRESS Dhcpv6Server; \
+ BYTE Dhcpv6ClientDuid[MAX_DHCPV6_DUID_LENGTH]; \
+ ULONG Dhcpv6ClientDuidLength; \
+ ULONG Dhcpv6Iaid;
+
+#define _IP_ADAPTER_ADDRESSES_ADD_2008_OR_VISTASP1 \
+ _IP_ADAPTER_ADDRESSES_ADD_VISTA \
+ PIP_ADAPTER_DNS_SUFFIX FirstDnsSuffix;
+
+#define _IP_ADAPTER_ADDRESSES_DEFINE(suffix,addition) \
+typedef struct _IP_ADAPTER_ADDRESSES##suffix { \
+ _IP_ADAPTER_ADDRESSES_HEAD \
+ struct _IP_ADAPTER_ADDRESSES##suffix *Next; \
+ _IP_ADAPTER_ADDRESSES_BASE \
+ addition \
+} IP_ADAPTER_ADDRESSES##suffix, *PIP_ADAPTER_ADDRESSES##suffix;
+
+
+/* _IP_ADAPTER_ADDRESSES_DEFINE(,) defined in w32api headers */
+_IP_ADAPTER_ADDRESSES_DEFINE(_XPSP1,_IP_ADAPTER_ADDRESSES_ADD_XPSP1)
+_IP_ADAPTER_ADDRESSES_DEFINE(_VISTA,_IP_ADAPTER_ADDRESSES_ADD_VISTA)
+_IP_ADAPTER_ADDRESSES_DEFINE(_2008_OR_VISTASP1,_IP_ADAPTER_ADDRESSES_ADD_2008_OR_VISTASP1)
+
+static int
+EnumNICs_IPv6_get_ifs_count (SOCKET s)
+{
+ DWORD dwret = 0, err;
+ int iret;
+ iret = WSAIoctl (s, SIO_ADDRESS_LIST_QUERY, NULL, 0, NULL, 0,
+ &dwret, NULL, NULL);
+ err = GetLastError ();
+ if (iret == SOCKET_ERROR && err == WSAEFAULT)
+ return dwret;
+ else if (iret == 0)
+ return 0;
+ return GNUNET_SYSERR;
+}
+
+static int
+EnumNICs_IPv6_get_ifs (SOCKET s, SOCKET_ADDRESS_LIST *inf, int size)
+{
+ int iret;
+ DWORD dwret = 0;
+ iret = WSAIoctl (s, SIO_ADDRESS_LIST_QUERY, NULL, 0, inf, size,
+ &dwret, NULL, NULL);
+
+ if (iret != 0 || dwret != size)
+ {
+ /* It's supposed to succeed! And size should be the same */
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+#undef GNUNET_malloc
+#define GNUNET_malloc(a) HeapAlloc(GetProcessHeap (), HEAP_ZERO_MEMORY | \
+ HEAP_GENERATE_EXCEPTIONS, a)
+
+#undef GNUNET_free
+#define GNUNET_free(a) HeapFree(GetProcessHeap (), 0, a)
+
+#undef GNUNET_free_non_null
+#define GNUNET_free_non_null(a) do { if ((a) != NULL) GNUNET_free(a); } while (0)
+
+static int
+EnumNICs_IPv4_get_ifs (SOCKET s, INTERFACE_INFO **inf, int *size)
+{
+ int iret;
+ DWORD dwret = 0;
+ DWORD error;
+ INTERFACE_INFO *ii = NULL;
+ DWORD ii_size = sizeof (INTERFACE_INFO) * 15;
+ while (TRUE)
+ {
+ if (ii_size >= sizeof (INTERFACE_INFO) * 1000)
+ return GNUNET_SYSERR;
+ ii = (INTERFACE_INFO *) GNUNET_malloc (ii_size);
+ dwret = 0;
+ iret = WSAIoctl (s, SIO_GET_INTERFACE_LIST, NULL, 0, ii, ii_size,
+ &dwret, NULL, NULL);
+ error = GetLastError ();
+ if (iret == SOCKET_ERROR)
+ {
+ if (error == WSAEFAULT)
+ {
+ GNUNET_free (ii);
+ ii_size *= 2;
+ continue;
+ }
+ GNUNET_free (ii);
+ return GNUNET_SYSERR;
+ }
+ else
+ {
+ *inf = ii;
+ *size = dwret;
+ return GNUNET_OK;
+ }
+ }
+ return GNUNET_SYSERR;
+}
+
+int
+EnumNICs2 (INTERFACE_INFO **ifs4, int *ifs4_len, SOCKET_ADDRESS_LIST **ifs6)
+{
+ int result = 0;
+ SOCKET s4 = INVALID_SOCKET, s6 = INVALID_SOCKET;
+ DWORD dwret1 = 0, dwret2;
+ DWORD err1, err2;
+ int ifs4len = 0, ifs6len = 0;
+ INTERFACE_INFO *interfaces4 = NULL;
+ SOCKET_ADDRESS_LIST *interfaces6 = NULL;
+ SetLastError (0);
+ s4 = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ err1 = GetLastError ();
+ SetLastError (0);
+ s6 = socket (AF_INET6, SOCK_STREAM, IPPROTO_TCP);
+ err2 = GetLastError ();
+ if (s6 != INVALID_SOCKET)
+ {
+ ifs6len = EnumNICs_IPv6_get_ifs_count (s6);
+ if (ifs6len > 0)
+ {
+ interfaces6 = (SOCKET_ADDRESS_LIST *) GNUNET_malloc (ifs6len);
+ result = EnumNICs_IPv6_get_ifs (s6, interfaces6, ifs6len) || result;
+ }
+ closesocket (s6);
+ s6 = INVALID_SOCKET;
+ }
+
+ if (s4 != INVALID_SOCKET)
+ {
+ result = EnumNICs_IPv4_get_ifs (s4, &interfaces4, &ifs4len) || result;
+ closesocket (s4);
+ s4 = INVALID_SOCKET;
+ }
+ if (ifs6len + ifs4len == 0)
+ goto error;
+
+ if (!result)
+ {
+ *ifs4 = interfaces4;
+ *ifs4_len = ifs4len;
+ *ifs6 = interfaces6;
+ return GNUNET_OK;
+ }
+error:
+ if (interfaces4 != NULL)
+ GNUNET_free (interfaces4);
+ if (interfaces6 != NULL)
+ GNUNET_free (interfaces6);
+ if (s4 != INVALID_SOCKET)
+ closesocket (s4);
+ if (s6 != INVALID_SOCKET)
+ closesocket (s6);
+ return GNUNET_SYSERR;
+}
+
+/**
+ * Returns GNUNET_OK on OK, GNUNET_SYSERR on error
+ */
+int
+EnumNICs3 (struct EnumNICs3_results **results, int *results_count)
+{
+ DWORD dwRetVal = 0;
+ int count = 0;
+ ULONG flags = /*GAA_FLAG_INCLUDE_PREFIX |*/ GAA_FLAG_SKIP_ANYCAST |
+ GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER;
+ struct sockaddr_in6 examplecom6;
+ IPAddr examplecom;
+ DWORD best_interface = 0;
+ DWORD best_interface6 = 0;
+
+ int use_enum2 = 0;
+ INTERFACE_INFO *interfaces4 = NULL;
+ int interfaces4_len = 0;
+ SOCKET_ADDRESS_LIST *interfaces6 = NULL;
+
+ unsigned long outBufLen = sizeof (IP_ADAPTER_ADDRESSES);
+ IP_ADAPTER_ADDRESSES *pCurrentAddress = NULL;
+ IP_ADAPTER_ADDRESSES *pAddresses = (IP_ADAPTER_ADDRESSES *) GNUNET_malloc (outBufLen);
+
+ if (GetAdaptersAddresses (AF_UNSPEC, flags, NULL, pAddresses, &outBufLen)
+ == ERROR_BUFFER_OVERFLOW)
+ {
+ GNUNET_free (pAddresses);
+ pAddresses = (IP_ADAPTER_ADDRESSES *) GNUNET_malloc (outBufLen);
+ }
+
+ dwRetVal = GetAdaptersAddresses (AF_UNSPEC, flags, NULL, pAddresses, &outBufLen);
+
+ if (dwRetVal != NO_ERROR)
+ {
+ GNUNET_free (pAddresses);
+ return GNUNET_SYSERR;
+ }
+
+ if (pAddresses->Length < sizeof (IP_ADAPTER_ADDRESSES_VISTA))
+ {
+ use_enum2 = 1;
+
+ /* Enumerate NICs using WSAIoctl() */
+ if (GNUNET_OK != EnumNICs2 (&interfaces4, &interfaces4_len, &interfaces6))
+ {
+ GNUNET_free (pAddresses);
+ return GNUNET_SYSERR;
+ }
+ }
+
+ examplecom = inet_addr("192.0.34.166"); /* www.example.com */
+ if (GetBestInterface (examplecom, &best_interface) != NO_ERROR)
+ best_interface = 0;
+
+ if (GNGetBestInterfaceEx != NULL)
+ {
+ examplecom6.sin6_family = AF_INET6;
+ examplecom6.sin6_port = 0;
+ examplecom6.sin6_flowinfo = 0;
+ examplecom6.sin6_scope_id = 0;
+ inet_pton (AF_INET6, "2001:500:88:200:0:0:0:10",
+ (struct sockaddr *) &examplecom6.sin6_addr);
+ dwRetVal = GNGetBestInterfaceEx ((struct sockaddr *) &examplecom6,
+ &best_interface6);
+ if (dwRetVal != NO_ERROR)
+ best_interface6 = 0;
+ }
+
+ /* Give IPv6 a priority */
+ if (best_interface6 != 0)
+ best_interface = best_interface6;
+
+ count = 0;
+ for (pCurrentAddress = pAddresses;
+ pCurrentAddress != NULL; pCurrentAddress = pCurrentAddress->Next)
+ {
+ if (pCurrentAddress->OperStatus == IfOperStatusUp)
+ {
+ IP_ADAPTER_UNICAST_ADDRESS *unicast = NULL;
+ for (unicast = pCurrentAddress->FirstUnicastAddress; unicast != NULL;
+ unicast = unicast->Next)
+ {
+ if ((unicast->Address.lpSockaddr->sa_family == AF_INET ||
+ unicast->Address.lpSockaddr->sa_family == AF_INET6) &&
+ (unicast->DadState == IpDadStateDeprecated ||
+ unicast->DadState == IpDadStatePreferred))
+ count += 1;
+ }
+ }
+ }
+
+ if (count == 0)
+ {
+ *results = NULL;
+ *results_count = 0;
+ GNUNET_free (pAddresses);
+ GNUNET_free_non_null (interfaces4);
+ GNUNET_free_non_null (interfaces6);
+ return GNUNET_OK;
+ }
+
+ *results = (struct EnumNICs3_results *) GNUNET_malloc (
+ sizeof (struct EnumNICs3_results) * count);
+ *results_count = count;
+
+ count = 0;
+ for (pCurrentAddress = pAddresses;
+ pCurrentAddress != NULL; pCurrentAddress = pCurrentAddress->Next)
+ {
+ struct EnumNICs3_results *r;
+ IP_ADAPTER_UNICAST_ADDRESS *unicast = NULL;
+ if (pCurrentAddress->OperStatus != IfOperStatusUp)
+ continue;
+ for (unicast = pCurrentAddress->FirstUnicastAddress; unicast != NULL;
+ unicast = unicast->Next)
+ {
+ int i, j;
+ int mask_length = -1;
+ char dst[INET6_ADDRSTRLEN + 1];
+
+ if ((unicast->Address.lpSockaddr->sa_family != AF_INET &&
+ unicast->Address.lpSockaddr->sa_family != AF_INET6) ||
+ (unicast->DadState != IpDadStateDeprecated &&
+ unicast->DadState != IpDadStatePreferred))
+ continue;
+
+ r = &(*results)[count];
+ r->flags = 0;
+ if (pCurrentAddress->IfIndex > 0 &&
+ pCurrentAddress->IfIndex == best_interface &&
+ unicast->Address.lpSockaddr->sa_family == AF_INET)
+ r->is_default = 1;
+ else if (pCurrentAddress->Ipv6IfIndex > 0 &&
+ pCurrentAddress->Ipv6IfIndex == best_interface6 &&
+ unicast->Address.lpSockaddr->sa_family == AF_INET6)
+ r->is_default = 1;
+ else
+ r->is_default = 0;
+
+ /* Don't choose default interface twice */
+ if (r->is_default)
+ best_interface = best_interface6 = 0;
+
+ if (!use_enum2)
+ {
+ memcpy (&r->address, unicast->Address.lpSockaddr,
+ unicast->Address.iSockaddrLength);
+ memset (&r->mask, 0, sizeof (struct sockaddr));
+ mask_length = ((IP_ADAPTER_UNICAST_ADDRESS_VISTA *) unicast)->
+ OnLinkPrefixLength;
+ /* OnLinkPrefixLength is the number of leading 1s in the mask.
+ * OnLinkPrefixLength is available on Vista and later (hence use_enum2).
+ */
+ if (unicast->Address.lpSockaddr->sa_family == AF_INET)
+ {
+ struct sockaddr_in *m = (struct sockaddr_in *) &r->mask;
+ for (i = 0; i < mask_length; i++)
+ ((unsigned char *) &m->sin_addr)[i / 8] |= 0x80 >> (i % 8);
+ }
+ else if (unicast->Address.lpSockaddr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 *m = (struct sockaddr_in6 *) &r->mask;
+ struct sockaddr_in6 *b = (struct sockaddr_in6 *) &r->broadcast;
+ for (i = 0; i < mask_length; i++)
+ ((unsigned char *) &m->sin6_addr)[i / 8] |= 0x80 >> (i % 8);
+ memcpy (&r->broadcast, &r->address, unicast->Address.iSockaddrLength);
+ for (i = mask_length; i < 128; i++)
+ ((unsigned char *) &b->sin6_addr)[i / 8] |= 0x80 >> (i % 8);
+ }
+ r->flags |= ENUMNICS3_MASK_OK;
+ }
+ else
+ {
+ int found = 0;
+ if (unicast->Address.lpSockaddr->sa_family == AF_INET)
+ {
+ for (i = 0; !found && i < interfaces4_len / sizeof (INTERFACE_INFO); i++)
+ {
+ struct sockaddr_in *m = (struct sockaddr_in *) &r->mask;
+ if (memcpy (&interfaces4[i].iiAddress.Address,
+ unicast->Address.lpSockaddr,
+ unicast->Address.iSockaddrLength) != 0)
+ continue;
+ found = 1;
+ memcpy (&r->address, &interfaces4[i].iiAddress.Address,
+ sizeof (struct sockaddr_in));
+ memcpy (&r->mask, &interfaces4[i].iiNetmask.Address,
+ sizeof (struct sockaddr_in));
+ for (mask_length = 0;
+ ((unsigned char *) &m->sin_addr)[mask_length / 8] &
+ 0x80 >> (mask_length % 8); mask_length++)
+ {
+ }
+ r->flags |= ENUMNICS3_MASK_OK;
+ }
+ }
+ else if (unicast->Address.lpSockaddr->sa_family == AF_INET6)
+ {
+ for (i = 0;
+ interfaces6 != NULL && !found && i < interfaces6->iAddressCount;
+ i++)
+ {
+ if (memcpy (interfaces6->Address[i].lpSockaddr,
+ unicast->Address.lpSockaddr,
+ unicast->Address.iSockaddrLength) != 0)
+ continue;
+ found = 1;
+ memcpy (&r->address, interfaces6->Address[i].lpSockaddr,
+ sizeof (struct sockaddr_in6));
+ /* TODO: Find a way to reliably get network mask for IPv6 on XP */
+ memset (&r->mask, 0, sizeof (struct sockaddr));
+ r->flags &= ~ENUMNICS3_MASK_OK;
+ }
+ }
+ if (!found)
+ {
+ DebugBreak ();
+ }
+ }
+ if (unicast->Address.lpSockaddr->sa_family == AF_INET)
+ {
+ struct sockaddr_in *m = (struct sockaddr_in *) &r->mask;
+ struct sockaddr_in *a = (struct sockaddr_in *) &r->address;
+ /* copy address to broadcast, then flip all the trailing bits not
+ * falling under netmask to 1,
+ * so we get, 192.168.0.255 from, say, 192.168.0.43 with mask == 24.
+ */
+ memcpy (&r->broadcast, &r->address, unicast->Address.iSockaddrLength);
+ for (i = mask_length; i < 32; i++)
+ ((unsigned char *) &m->sin_addr)[i / 8] |= 0x80 >> (i % 8);
+ r->flags |= ENUMNICS3_BCAST_OK;
+ r->addr_size = sizeof (struct sockaddr_in);
+ inet_ntop (AF_INET, &a->sin_addr, dst, INET_ADDRSTRLEN);
+ }
+ else if (unicast->Address.lpSockaddr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 *a = (struct sockaddr_in6 *) &r->address;
+ /* for IPv6 broadcast is not defined, zero it down */
+ memset (&r->broadcast, 0, sizeof (struct sockaddr));
+ r->flags &= ~ENUMNICS3_BCAST_OK;
+ r->addr_size = sizeof (struct sockaddr_in6);
+ inet_ntop (AF_INET6, &a->sin6_addr, dst, INET6_ADDRSTRLEN);
+ }
+
+ i = 0;
+ i += snprintf (&r->pretty_name[i], 1000 - i > 0 ? 1000 - i : 0,
+ "%S (%s", pCurrentAddress->FriendlyName, dst);
+ for (j = 0; j < pCurrentAddress->PhysicalAddressLength; j++)
+ i += snprintf (&r->pretty_name[i], 1000 - i > 0 ? 1000 - i : 0,
+ "%s%02X",j > 0 ? ":" : " - ", pCurrentAddress->PhysicalAddress[j]);
+ i += snprintf (&r->pretty_name[i], 1000 - i > 0 ? 1000 - i : 0, ")");
+ r->pretty_name[1000] = '\0';
+ count += 1;
+ }
+ }
+
+ if (use_enum2)
+ {
+ GNUNET_free_non_null (interfaces4);
+ GNUNET_free_non_null (interfaces6);
+ }
+
+ GNUNET_free (pAddresses);
+ return GNUNET_OK;
+}
+
+void
+EnumNICs3_free (struct EnumNICs3_results *r)
+{
+ GNUNET_free_non_null (r);
+}
+
+
+/**
+ * Lists all network interfaces in a combo box
+ * Used by the basic GTK configurator
+ *
+ * @param callback function to call for each NIC
+ * @param callback_cls closure for callback
+ */
+int
+ListNICs (void (*callback) (void *, const char *, int), void * callback_cls)
+{
+ int r;
+ int i;
+ struct EnumNICs3_results *results = NULL;
+ int results_count;
+
+ r = EnumNICs3 (&results, &results_count);
+ if (r != GNUNET_OK)
+ return GNUNET_NO;
+
+ for (i = 0; i < results_count; i++)
+ callback (callback_cls, results[i].pretty_name, results[i].is_default);
+ GNUNET_free_non_null (results);
+ return GNUNET_YES;
+}
+
+/**
+ * @brief Installs the Windows service
+ * @param servicename name of the service as diplayed by the SCM
+ * @param application path to the application binary
+ * @param username the name of the service's user account
+ * @returns 0 on success
+ * 1 if the Windows version doesn't support services
+ * 2 if the SCM could not be opened
+ * 3 if the service could not be created
+ */
+int InstallAsService(char *servicename, char *application, char *username)
+{
+ SC_HANDLE hManager, hService;
+ char szEXE[_MAX_PATH + 17] = "\"";
+ char *user = NULL;
+
+ if (! GNOpenSCManager)
+ return 1;
+
+ plibc_conv_to_win_path(application, szEXE + 1);
+ strcat(szEXE, "\" --win-service");
+ hManager = GNOpenSCManager(NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+ if (! hManager)
+ return 2;
+
+ if (username)
+ {
+ user = (char *) malloc(strlen(username) + 3);
+ sprintf(user, ".\\%s", username);
+ }
+
+ hService = GNCreateService(hManager, (LPCTSTR) servicename, (LPCTSTR) servicename, 0,
+ SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, (LPCTSTR) szEXE,
+ NULL, NULL, NULL, (LPCTSTR) user, (LPCTSTR) username);
+
+ if (user)
+ free(user);
+
+ if (! hService)
+ return 3;
+
+ GNCloseServiceHandle(hService);
+
+ return 0;
+}
+
+/**
+ * @brief Uninstall Windows service
+ * @param servicename name of the service to delete
+ * @returns 0 on success
+ * 1 if the Windows version doesn't support services
+ * 2 if the SCM could not be openend
+ * 3 if the service cannot be accessed
+ * 4 if the service cannot be deleted
+ */
+int UninstallService(char *servicename)
+{
+ SC_HANDLE hManager, hService;
+
+ if (! GNOpenSCManager)
+ return 1;
+
+ hManager = GNOpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
+ if (! hManager)
+ return 2;
+
+ if (! (hService = GNOpenService(hManager, (LPCTSTR) servicename, DELETE)))
+ if (GetLastError() != ERROR_SERVICE_DOES_NOT_EXIST)
+ return 3;
+ else
+ goto closeSCM;
+
+ if (! GNDeleteService(hService))
+ if (GetLastError() != ERROR_SERVICE_MARKED_FOR_DELETE)
+ return 4;
+
+closeSCM:
+ GNCloseServiceHandle(hService);
+
+ return 0;
+}
+
+/**
+ * @author Scott Field, Microsoft
+ * @see http://support.microsoft.com/?scid=kb;en-us;132958
+ * @date 12-Jul-95
+ */
+void _InitLsaString(PLSA_UNICODE_STRING LsaString, LPWSTR String)
+{
+ DWORD StringLength;
+
+ if(String == NULL)
+ {
+ LsaString->Buffer = NULL;
+ LsaString->Length = 0;
+ LsaString->MaximumLength = 0;
+ return;
+ }
+
+ StringLength = wcslen(String);
+ LsaString->Buffer = String;
+ LsaString->Length = (USHORT) StringLength *sizeof(WCHAR);
+ LsaString->MaximumLength = (USHORT) (StringLength + 1) * sizeof(WCHAR);
+}
+
+
+/**
+ * @author Scott Field, Microsoft
+ * @see http://support.microsoft.com/?scid=kb;en-us;132958
+ * @date 12-Jul-95
+ */
+NTSTATUS _OpenPolicy(LPWSTR ServerName, DWORD DesiredAccess, PLSA_HANDLE PolicyHandle)
+{
+ LSA_OBJECT_ATTRIBUTES ObjectAttributes;
+ LSA_UNICODE_STRING ServerString;
+ PLSA_UNICODE_STRING Server = NULL;
+
+ /* Always initialize the object attributes to all zeroes. */
+ ZeroMemory(&ObjectAttributes, sizeof(ObjectAttributes));
+
+ if(ServerName != NULL)
+ {
+ /* Make a LSA_UNICODE_STRING out of the LPWSTR passed in */
+ _InitLsaString(&ServerString, ServerName);
+ Server = &ServerString;
+ }
+
+ /* Attempt to open the policy. */
+ return GNLsaOpenPolicy(Server,
+ &ObjectAttributes, DesiredAccess, PolicyHandle);
+}
+
+/**
+ * @brief Obtain a SID representing the supplied account on the supplied system
+ * @return TRUE on success, FALSE on failure
+ * @author Scott Field, Microsoft
+ * @date 12-Jul-95
+ * @remarks A buffer is allocated which contains the SID representing the
+ * supplied account. This buffer should be freed when it is no longer
+ * needed by calling\n
+ * HeapFree(GetProcessHeap(), 0, buffer)
+ * @remarks Call GetLastError() to obtain extended error information.
+ * @see http://support.microsoft.com/?scid=kb;en-us;132958
+ */
+BOOL _GetAccountSid(LPCTSTR SystemName, LPCTSTR AccountName, PSID * Sid)
+{
+ LPTSTR ReferencedDomain = NULL;
+ DWORD cbSid = 128; /* initial allocation attempt */
+ DWORD cchReferencedDomain = 16; /* initial allocation size */
+ SID_NAME_USE peUse;
+ BOOL bSuccess = FALSE; /* assume this function will fail */
+
+ /* initial memory allocations */
+ if ((*Sid = HeapAlloc (GetProcessHeap (), 0, cbSid)) == NULL)
+ return FALSE;
+
+ if ((ReferencedDomain = (LPTSTR) HeapAlloc (GetProcessHeap (),
+ 0,
+ cchReferencedDomain *
+ sizeof (TCHAR))) == NULL)
+ return FALSE;
+
+ /* Obtain the SID of the specified account on the specified system. */
+ while (!GNLookupAccountName(SystemName, /* machine to lookup account on */
+ AccountName, /* account to lookup */
+ *Sid, /* SID of interest */
+ &cbSid, /* size of SID */
+ ReferencedDomain, /* domain account was found on */
+ &cchReferencedDomain, &peUse))
+ {
+ if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
+ {
+ /* reallocate memory */
+ if ((*Sid = HeapReAlloc (GetProcessHeap (), 0, *Sid, cbSid)) == NULL)
+ return FALSE;
+
+ if ((ReferencedDomain = (LPTSTR) HeapReAlloc (GetProcessHeap (),
+ 0,
+ ReferencedDomain,
+ cchReferencedDomain
+ * sizeof (TCHAR))) == NULL)
+ return FALSE;
+ }
+ else
+ goto end;
+ }
+
+ /* Indicate success. */
+ bSuccess = TRUE;
+
+end:
+ /* Cleanup and indicate failure, if appropriate. */
+ HeapFree (GetProcessHeap (), 0, ReferencedDomain);
+
+ if (!bSuccess)
+ {
+ if (*Sid != NULL)
+ {
+ HeapFree (GetProcessHeap (), 0, *Sid);
+ *Sid = NULL;
+ }
+ }
+
+ return bSuccess;
+}
+
+/**
+ * @author Scott Field, Microsoft
+ * @see http://support.microsoft.com/?scid=kb;en-us;132958
+ * @date 12-Jul-95
+ */
+NTSTATUS _SetPrivilegeOnAccount(LSA_HANDLE PolicyHandle,/* open policy handle */
+ PSID AccountSid, /* SID to grant privilege to */
+ LPWSTR PrivilegeName, /* privilege to grant (Unicode) */
+ BOOL bEnable /* enable or disable */
+ )
+{
+ LSA_UNICODE_STRING PrivilegeString;
+
+ /* Create a LSA_UNICODE_STRING for the privilege name. */
+ _InitLsaString(&PrivilegeString, PrivilegeName);
+
+ /* grant or revoke the privilege, accordingly */
+ if(bEnable)
+ {
+ NTSTATUS i;
+
+ i = GNLsaAddAccountRights(PolicyHandle, /* open policy handle */
+ AccountSid, /* target SID */
+ &PrivilegeString, /* privileges */
+ 1 /* privilege count */
+ );
+ }
+ else
+ {
+ return GNLsaRemoveAccountRights(PolicyHandle, /* open policy handle */
+ AccountSid, /* target SID */
+ FALSE, /* do not disable all rights */
+ &PrivilegeString, /* privileges */
+ 1 /* privilege count */
+ );
+ }
+}
+
+/**
+ * @brief Create a Windows service account
+ * @return 0 on success, > 0 otherwise
+ * @param pszName the name of the account
+ * @param pszDesc description of the account
+ */
+int CreateServiceAccount(const char *pszName, const char *pszDesc)
+{
+ USER_INFO_1 ui;
+ USER_INFO_1008 ui2;
+ NET_API_STATUS nStatus;
+ wchar_t wszName[MAX_NAME_LENGTH], wszDesc[MAX_NAME_LENGTH];
+ DWORD dwErr;
+ LSA_HANDLE hPolicy;
+ PSID pSID;
+
+ if (! GNNetUserAdd)
+ return 1;
+ mbstowcs(wszName, pszName, strlen(pszName) + 1);
+ mbstowcs(wszDesc, pszDesc, strlen(pszDesc) + 1);
+
+ memset(&ui, 0, sizeof(ui));
+ ui.usri1_name = wszName;
+ ui.usri1_password = wszName; /* account is locked anyway */
+ ui.usri1_priv = USER_PRIV_USER;
+ ui.usri1_comment = wszDesc;
+ ui.usri1_flags = UF_SCRIPT;
+
+ nStatus = GNNetUserAdd(NULL, 1, (LPBYTE)&ui, NULL);
+
+ if (nStatus != NERR_Success && nStatus != NERR_UserExists)
+ return 2;
+
+ ui2.usri1008_flags = UF_PASSWD_CANT_CHANGE | UF_DONT_EXPIRE_PASSWD;
+ GNNetUserSetInfo(NULL, wszName, 1008, (LPBYTE)&ui2, NULL);
+
+ if (_OpenPolicy(NULL, POLICY_ALL_ACCESS, &hPolicy) !=
+ STATUS_SUCCESS)
+ return 3;
+
+ _GetAccountSid(NULL, (LPCTSTR) pszName, &pSID);
+
+ if (_SetPrivilegeOnAccount(hPolicy, pSID, (LPWSTR) L"SeServiceLogonRight", TRUE) != STATUS_SUCCESS)
+ return 4;
+
+ _SetPrivilegeOnAccount(hPolicy, pSID, (LPWSTR) L"SeDenyInteractiveLogonRight", TRUE);
+ _SetPrivilegeOnAccount(hPolicy, pSID, (LPWSTR) L"SeDenyBatchLogonRight", TRUE);
+ _SetPrivilegeOnAccount(hPolicy, pSID, (LPWSTR) L"SeDenyNetworkLogonRight", TRUE);
+
+ GNLsaClose(hPolicy);
+
+ return 0;
+}
+
+/**
+ * @brief Grant permission to a file
+ * @param lpszFileName the name of the file or directory
+ * @param lpszAccountName the user account
+ * @param dwAccessMask the desired access (e.g. GENERIC_ALL)
+ * @return TRUE on success
+ * @remark based on http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q102102&
+ */
+BOOL AddPathAccessRights(char *lpszFileName, char *lpszAccountName,
+ DWORD dwAccessMask)
+{
+ /* SID variables. */
+ SID_NAME_USE snuType;
+ TCHAR * szDomain = NULL;
+ DWORD cbDomain = 0;
+ LPVOID pUserSID = NULL;
+ DWORD cbUserSID = 0;
+
+ /* File SD variables. */
+ PSECURITY_DESCRIPTOR pFileSD = NULL;
+ DWORD cbFileSD = 0;
+
+ /* New SD variables. */
+ SECURITY_DESCRIPTOR newSD;
+
+ /* ACL variables. */
+ PACL pACL = NULL;
+ BOOL fDaclPresent;
+ BOOL fDaclDefaulted;
+ ACL_SIZE_INFORMATION AclInfo;
+
+ /* New ACL variables. */
+ PACL pNewACL = NULL;
+ DWORD cbNewACL = 0;
+
+ /* Temporary ACE. */
+ LPVOID pTempAce = NULL;
+ UINT CurrentAceIndex = 0;
+
+ UINT newAceIndex = 0;
+
+ /* Assume function will fail. */
+ BOOL fResult = FALSE;
+ BOOL fAPISuccess;
+
+ SECURITY_INFORMATION secInfo = DACL_SECURITY_INFORMATION;
+
+ /**
+ * STEP 1: Get SID of the account name specified.
+ */
+ fAPISuccess = GNLookupAccountName(NULL, (LPCTSTR) lpszAccountName,
+ pUserSID, &cbUserSID, (LPTSTR) szDomain, &cbDomain, &snuType);
+
+ /* API should have failed with insufficient buffer. */
+ if (fAPISuccess)
+ goto end;
+ else if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ goto end;
+ }
+
+ pUserSID = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cbUserSID);
+ if (!pUserSID) {
+ goto end;
+ }
+
+ szDomain = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cbDomain * sizeof(TCHAR));
+ if (!szDomain) {
+ goto end;
+ }
+
+ fAPISuccess = GNLookupAccountName(NULL, (LPCTSTR) lpszAccountName,
+ pUserSID, &cbUserSID, (LPTSTR) szDomain, &cbDomain, &snuType);
+ if (!fAPISuccess) {
+ goto end;
+ }
+
+ /**
+ * STEP 2: Get security descriptor (SD) of the file specified.
+ */
+ fAPISuccess = GNGetFileSecurity((LPCTSTR) lpszFileName,
+ secInfo, pFileSD, 0, &cbFileSD);
+
+ /* API should have failed with insufficient buffer. */
+ if (fAPISuccess)
+ goto end;
+ else if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ goto end;
+ }
+
+ pFileSD = (PSECURITY_DESCRIPTOR) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
+ cbFileSD);
+ if (!pFileSD) {
+ goto end;
+ }
+
+ fAPISuccess = GNGetFileSecurity((LPCTSTR) lpszFileName,
+ secInfo, pFileSD, cbFileSD, &cbFileSD);
+ if (!fAPISuccess) {
+ goto end;
+ }
+
+ /**
+ * STEP 3: Initialize new SD.
+ */
+ if (!GNInitializeSecurityDescriptor(&newSD,
+ SECURITY_DESCRIPTOR_REVISION)) {
+ goto end;
+ }
+
+ /**
+ * STEP 4: Get DACL from the old SD.
+ */
+ if (!GNGetSecurityDescriptorDacl(pFileSD, &fDaclPresent, &pACL,
+ &fDaclDefaulted)) {
+ goto end;
+ }
+
+ /**
+ * STEP 5: Get size information for DACL.
+ */
+ AclInfo.AceCount = 0; // Assume NULL DACL.
+ AclInfo.AclBytesFree = 0;
+ AclInfo.AclBytesInUse = sizeof(ACL);
+
+ if (pACL == NULL)
+ fDaclPresent = FALSE;
+
+ /* If not NULL DACL, gather size information from DACL. */
+ if (fDaclPresent) {
+
+ if (!GNGetAclInformation(pACL, &AclInfo,
+ sizeof(ACL_SIZE_INFORMATION), AclSizeInformation)) {
+ goto end;
+ }
+ }
+
+ /**
+ * STEP 6: Compute size needed for the new ACL.
+ */
+ cbNewACL = AclInfo.AclBytesInUse + sizeof(ACCESS_ALLOWED_ACE)
+ + GetLengthSid(pUserSID) - sizeof(DWORD);
+
+ /**
+ * STEP 7: Allocate memory for new ACL.
+ */
+ pNewACL = (PACL) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cbNewACL);
+ if (!pNewACL) {
+ goto end;
+ }
+
+ /**
+ * STEP 8: Initialize the new ACL.
+ */
+ if (!GNInitializeAcl(pNewACL, cbNewACL, ACL_REVISION2)) {
+ goto end;
+ }
+
+ /**
+ * STEP 9 If DACL is present, copy all the ACEs from the old DACL
+ * to the new DACL.
+ *
+ * The following code assumes that the old DACL is
+ * already in Windows 2000 preferred order. To conform
+ * to the new Windows 2000 preferred order, first we will
+ * copy all non-inherited ACEs from the old DACL to the
+ * new DACL, irrespective of the ACE type.
+ */
+
+ newAceIndex = 0;
+
+ if (fDaclPresent && AclInfo.AceCount) {
+
+ for (CurrentAceIndex = 0;
+ CurrentAceIndex < AclInfo.AceCount;
+ CurrentAceIndex++) {
+
+ /**
+ * TEP 10: Get an ACE.
+ */
+ if (!GNGetAce(pACL, CurrentAceIndex, &pTempAce)) {
+ goto end;
+ }
+
+ /**
+ * STEP 11: Check if it is a non-inherited ACE.
+ * If it is an inherited ACE, break from the loop so
+ * that the new access allowed non-inherited ACE can
+ * be added in the correct position, immediately after
+ * all non-inherited ACEs.
+ */
+ if (((ACCESS_ALLOWED_ACE *)pTempAce)->Header.AceFlags
+ & INHERITED_ACE)
+ break;
+
+ /**
+ * STEP 12: Skip adding the ACE, if the SID matches
+ * with the account specified, as we are going to
+ * add an access allowed ACE with a different access
+ * mask.
+ */
+ if (GNEqualSid(pUserSID,
+ &(((ACCESS_ALLOWED_ACE *)pTempAce)->SidStart)))
+ continue;
+
+ /**
+ * STEP 13: Add the ACE to the new ACL.
+ */
+ if (!GNAddAce(pNewACL, ACL_REVISION, MAXDWORD, pTempAce,
+ ((PACE_HEADER) pTempAce)->AceSize)) {
+ goto end;
+ }
+
+ newAceIndex++;
+ }
+ }
+
+ /**
+ * STEP 14: Add the access-allowed ACE to the new DACL.
+ * The new ACE added here will be in the correct position,
+ * immediately after all existing non-inherited ACEs.
+ */
+ if (!GNAddAccessAllowedAce(pNewACL, ACL_REVISION2, dwAccessMask,
+ pUserSID)) {
+ goto end;
+ }
+
+ /**
+ * STEP 14.5: Make new ACE inheritable
+ */
+ if (!GetAce(pNewACL, newAceIndex, &pTempAce))
+ goto end;
+ ((ACCESS_ALLOWED_ACE *)pTempAce)->Header.AceFlags |=
+ (CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE);
+
+ /**
+ * STEP 15: To conform to the new Windows 2000 preferred order,
+ * we will now copy the rest of inherited ACEs from the
+ * old DACL to the new DACL.
+ */
+ if (fDaclPresent && AclInfo.AceCount) {
+
+ for (;
+ CurrentAceIndex < AclInfo.AceCount;
+ CurrentAceIndex++) {
+
+ /**
+ * STEP 16: Get an ACE.
+ */
+ if (!GNGetAce(pACL, CurrentAceIndex, &pTempAce)) {
+ goto end;
+ }
+
+ /**
+ * STEP 17: Add the ACE to the new ACL.
+ */
+ if (!GNAddAce(pNewACL, ACL_REVISION, MAXDWORD, pTempAce,
+ ((PACE_HEADER) pTempAce)->AceSize)) {
+ goto end;
+ }
+ }
+ }
+
+ /**
+ * STEP 18: Set permissions
+ */
+ if (GNSetNamedSecurityInfo((LPTSTR) lpszFileName, SE_FILE_OBJECT,
+ DACL_SECURITY_INFORMATION, NULL, NULL, pNewACL, NULL) != ERROR_SUCCESS) {
+ goto end;
+ }
+
+ fResult = TRUE;
+
+end:
+
+ /**
+ * STEP 19: Free allocated memory
+ */
+ if (pUserSID)
+ HeapFree(GetProcessHeap(), 0, pUserSID);
+
+ if (szDomain)
+ HeapFree(GetProcessHeap(), 0, szDomain);
+
+ if (pFileSD)
+ HeapFree(GetProcessHeap(), 0, pFileSD);
+
+ if (pNewACL)
+ HeapFree(GetProcessHeap(), 0, pNewACL);
+
+ return fResult;
+}
+
+char *winErrorStr(const char *prefix, int dwErr)
+{
+ char *err, *ret;
+ int mem;
+
+ if (! FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+ NULL, (DWORD) dwErr, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &err,
+ 0, NULL ))
+ {
+ err = (char *) LocalAlloc (LMEM_FIXED | LMEM_ZEROINIT, 1);
+ }
+
+ mem = strlen(err) + strlen(prefix) + 20;
+ ret = (char *) malloc(mem);
+
+ snprintf(ret, mem, "%s: %s (#%u)", prefix, err, dwErr);
+
+ LocalFree(err);
+
+ return ret;
+}
+
+} /* extern "C" */
+
+#endif
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