int
isc_win32os_versioncheck(unsigned int major, unsigned int minor,
		     unsigned int spmajor, unsigned int spminor) {

	initialize_action();

	if (major < isc_win32os_majorversion())
		return (1);
	if (major > isc_win32os_majorversion())
		return (-1);
	if (minor < isc_win32os_minorversion())
		return (1);
	if (minor > isc_win32os_minorversion())
		return (-1);
	if (spmajor < isc_win32os_servicepackmajor())
		return (1);
	if (spmajor > isc_win32os_servicepackmajor())
		return (-1);
	if (spminor < isc_win32os_servicepackminor())
		return (1);
	if (spminor > isc_win32os_servicepackminor())
		return (-1);

	/* Exact */
	return (0);
}
Example #2
0
/*
 * Due to Knowledge base article Q263823 we need to make sure that
 * Windows 2000 systems have Service Pack 2 or later installed and
 * warn when it isn't.
 */
static void
version_check(const char *progname) {

	if(isc_win32os_majorversion() < 5)
		return;	/* No problem with Version 4.0 */
	if(isc_win32os_versioncheck(5, 0, 2, 0) < 0)
		if (ntservice_isservice())
			NTReportError(progname, version_error);
		else
			fprintf(stderr, "%s\n", version_error);
}
Example #3
0
isc_result_t
isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
	char strbuf[ISC_STRERRORSIZE];
	isc_interfaceiter_t *iter;
	isc_result_t result;
	unsigned int major;
	unsigned int minor;
	unsigned int spmajor;
	ULONG err;
	int tries;
	int error;
	unsigned long bytesReturned = 0;

	REQUIRE(mctx != NULL);
	REQUIRE(iterp != NULL);
	REQUIRE(*iterp == NULL);

	iter = isc_mem_get(mctx, sizeof(*iter));
	if (iter == NULL)
		return (ISC_R_NOMEMORY);

	InitSockets();

	iter->mctx = mctx;
	iter->ipaa = NULL;
	iter->buf4 = NULL;
	iter->buf6 = NULL;
	iter->pos4 = NULL;
	iter->ipaaCur = NULL;
	iter->ipuaCur = NULL;
	iter->ipaasize = 0;
	iter->pos6 = 0;
	iter->buf6size = 0;
	iter->buf4size = 0;
	iter->result = ISC_R_FAILURE;
	iter->numIF = 0;
	iter->v4IF = 0;

	/*
	 * Use GetAdaptersAddresses in preference to ioctls when running
	 * on Windows XP SP1 or later.  Earlier GetAdaptersAddresses do
	 * not appear to provide enough information to associate unicast
	 * addresses with their prefixes.
	 */
	if (!use_GAA_determined) {
		major = isc_win32os_majorversion();
		minor = isc_win32os_minorversion();
		spmajor = isc_win32os_servicepackmajor();
		if (major > 5 || (5 == major &&
		    (minor > 1 || (1 == minor && spmajor >= 1)))) {
			if (NULL == hmod_iphlpapi)
				hmod_iphlpapi = LoadLibrary("iphlpapi");
			if (NULL != hmod_iphlpapi)
				pGAA = (PGETADAPTERSADDRESSES)
				    GetProcAddress(
					hmod_iphlpapi,
					"GetAdaptersAddresses");
			if (NULL != pGAA)
				use_GAA = ISC_TRUE;
		}
		use_GAA_determined = ISC_TRUE;
	}

	if (!use_GAA)
		goto use_ioctls;

	iter->ipaasize = 16 * 1024;

	for (tries = 0; tries < 5; tries++) {
		iter->ipaa = isc_mem_reallocate(mctx, iter->ipaa,
						 iter->ipaasize);
		if (NULL == iter->ipaa) {
			result = ISC_R_NOMEMORY;
			goto put_iter;
		}
		err = (*pGAA)(
			AF_UNSPEC,
			GAA_FLAG_INCLUDE_PREFIX | GAA_FLAG_SKIP_ANYCAST,
			NULL,
			iter->ipaa,
			&iter->ipaasize);
		if (NO_ERROR == err || ERROR_BUFFER_OVERFLOW != err)
			break;
	}

	if (NO_ERROR != err) {
		isc__strerror(err, strbuf, sizeof(strbuf));
		UNEXPECTED_ERROR(__FILE__, __LINE__,
				"GetAdaptersAddresses: %s",
				strbuf);
		result = ISC_R_UNEXPECTED;
		goto gaa_failure;
	}
	
	iter->ipaaCur = iter->ipaa;
	goto success;

 use_ioctls:
	/*
	 * Create an unbound datagram socket to do the
	 * SIO_GET_INTERFACE_LIST WSAIoctl on.
	 */
	if ((iter->socket = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
		error = WSAGetLastError();
		if (error == WSAEAFNOSUPPORT)
			goto inet6_only;
		isc__strerror(error, strbuf, sizeof(strbuf));
		UNEXPECTED_ERROR(__FILE__, __LINE__,
				"making interface scan socket: %s",
				strbuf);
		result = ISC_R_UNEXPECTED;
		goto put_iter;
	}

	/*
	 * Get the interface configuration, allocating more memory if
	 * necessary.
	 */
	iter->buf4size = IFCONF_SIZE_INITIAL*sizeof(INTERFACE_INFO);

	for (;;) {
		iter->buf4 = isc_mem_get(mctx, iter->buf4size);
		if (iter->buf4 == NULL) {
			result = ISC_R_NOMEMORY;
			goto alloc_failure;
		}

		if (WSAIoctl(iter->socket, SIO_GET_INTERFACE_LIST,
			     0, 0, iter->buf4, iter->buf4size,
			     &bytesReturned, 0, 0) == SOCKET_ERROR)
		{
			error = WSAGetLastError();
			if (error != WSAEFAULT && error != WSAENOBUFS) {
				errno = error;
				isc__strerror(error, strbuf, sizeof(strbuf));
				UNEXPECTED_ERROR(__FILE__, __LINE__,
						"get interface configuration: %s",
						strbuf);
				result = ISC_R_UNEXPECTED;
				goto ioctl_failure;
			}
			/*
			 * EINVAL.  Retry with a bigger buffer.
			 */
		} else {
			/*
			 * The WSAIoctl succeeded.
			 * If the number of the returned bytes is the same
			 * as the buffer size, we will grow it just in
			 * case and retry.
			 */
			if (bytesReturned > 0 &&
			    (bytesReturned < iter->buf4size))
				break;
		}
		if (iter->buf4size >= IFCONF_SIZE_MAX*sizeof(INTERFACE_INFO)) {
			UNEXPECTED_ERROR(__FILE__, __LINE__,
					 "get interface configuration: "
					 "maximum buffer size exceeded");
			result = ISC_R_UNEXPECTED;
			goto ioctl_failure;
		}
		isc_mem_put(mctx, iter->buf4, iter->buf4size);

		iter->buf4size += IFCONF_SIZE_INCREMENT *
			sizeof(INTERFACE_INFO);
	}

	/*
	 * A newly created iterator has an undefined position
	 * until isc_interfaceiter_first() is called.
	 */
	iter->v4IF = bytesReturned/sizeof(INTERFACE_INFO);

	/* We don't need the socket any more, so close it */
	closesocket(iter->socket);

 inet6_only:
	/*
	 * Create an unbound datagram socket to do the
	 * SIO_ADDRESS_LIST_QUERY WSAIoctl on.
	 */
	if ((iter->socket = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
		error = WSAGetLastError();
		if (error == WSAEAFNOSUPPORT)
			goto success;
		isc__strerror(error, strbuf, sizeof(strbuf));
		UNEXPECTED_ERROR(__FILE__, __LINE__,
				"making interface scan socket: %s",
				strbuf);
		result = ISC_R_UNEXPECTED;
		goto put_iter;
	}

	/*
	 * Get the interface configuration, allocating more memory if
	 * necessary.
	 */
	iter->buf6size = sizeof(SOCKET_ADDRESS_LIST) +
			 IFCONF_SIZE_INITIAL*sizeof(SOCKET_ADDRESS);

	for (;;) {
		iter->buf6 = isc_mem_get(mctx, iter->buf6size);
		if (iter->buf6 == NULL) {
			result = ISC_R_NOMEMORY;
			goto ioctl_failure;
		}

		if (WSAIoctl(iter->socket, SIO_ADDRESS_LIST_QUERY,
			     0, 0, iter->buf6, iter->buf6size,
			     &bytesReturned, 0, 0) == SOCKET_ERROR)
		{
			error = WSAGetLastError();
			if (error != WSAEFAULT && error != WSAENOBUFS) {
				errno = error;
				isc__strerror(error, strbuf, sizeof(strbuf));
				UNEXPECTED_ERROR(__FILE__, __LINE__,
						 "sio address list query: %s",
						 strbuf);
				result = ISC_R_UNEXPECTED;
				goto ioctl6_failure;
			}
			/*
			 * EINVAL.  Retry with a bigger buffer.
			 */
		} else
			break;

		if (iter->buf6size >= IFCONF_SIZE_MAX*sizeof(SOCKET_ADDRESS)) {
			UNEXPECTED_ERROR(__FILE__, __LINE__,
					 "get interface configuration: "
					 "maximum buffer size exceeded");
			result = ISC_R_UNEXPECTED;
			goto ioctl6_failure;
		}
		isc_mem_put(mctx, iter->buf6, iter->buf6size);

		iter->buf6size += IFCONF_SIZE_INCREMENT *
			sizeof(SOCKET_ADDRESS);
	}

	/*
	 * initialize loop__1 to [::1] and loopfe80__1 to [fe80::1].
	 * used by internal_current6().
	 */
	memset(&iter->loop__1, 0, sizeof(iter->loop__1));
	memset(&iter->loopfe80__1, 0, sizeof(iter->loopfe80__1));
	iter->loop__1.s6_addr[15] = 1;
	iter->loopfe80__1.s6_addr[15] = 1;
	iter->loopfe80__1.s6_addr[0] = 0xfe;
	iter->loopfe80__1.s6_addr[1] = 0x80;

	closesocket(iter->socket);

 success:
	iter->magic = IFITER_MAGIC;
	*iterp = iter;
	return (ISC_R_SUCCESS);

 gaa_failure:
	isc_mem_put(mctx, iter->ipaa, iter->ipaasize);
	goto put_iter;

 ioctl6_failure:
	isc_mem_put(mctx, iter->buf6, iter->buf6size);

 ioctl_failure:
	if (iter->buf4 != NULL)
		isc_mem_put(mctx, iter->buf4, iter->buf4size);

 alloc_failure:
	if (iter->socket >= 0)
		(void) closesocket(iter->socket);

 put_iter:
	isc_mem_put(mctx, iter, sizeof(*iter));
	return (result);
}