1 files changed, 146 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/common/netutils.py b/src/VBox/ValidationKit/common/netutils.py
new file mode 100755
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+++ b/src/VBox/ValidationKit/common/netutils.py
@@ -0,0 +1,146 @@
+# -*- coding: utf-8 -*-
+# $Id: netutils.py $
+# pylint: disable=too-many-lines
+
+"""
+Common Network Utility Functions.
+"""
+
+from __future__ import print_function;
+
+__copyright__ = \
+"""
+Copyright (C) 2012-2022 Oracle and/or its affiliates.
+
+This file is part of VirtualBox base platform packages, as
+available from https://www.virtualbox.org.
+
+This program 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, in version 3 of the
+License.
+
+This program 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 this program; if not, see <https://www.gnu.org/licenses>.
+
+The contents of this file may alternatively be used under the terms
+of the Common Development and Distribution License Version 1.0
+(CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+in the VirtualBox distribution, in which case the provisions of the
+CDDL are applicable instead of those of the GPL.
+
+You may elect to license modified versions of this file under the
+terms and conditions of either the GPL or the CDDL or both.
+
+SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+"""
+__version__ = "$Revision: 153224 $"
+
+
+# Standard Python imports.
+import socket;
+
+
+def getPrimaryHostIpByUdp(sPeerIp = '255.255.255.255'):
+    """
+    Worker for getPrimaryHostIp.
+
+    The method is opening a UDP socket targetting a random port on a
+    limited (local LAN) broadcast address.  We then use getsockname() to
+    obtain our own IP address, which should then be the primary IP.
+
+    Unfortunately, this doesn't always work reliably on Solaris.  When for
+    instance our host only is configured, which interface we end up on seems
+    to be totally random.
+    """
+
+    try:    oSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM);
+    except: oSocket = None;
+    if oSocket is not None:
+        try:
+            oSocket.connect((sPeerIp, 1984));
+            sHostIp = oSocket.getsockname()[0];
+        except:
+            sHostIp = None;
+        oSocket.close();
+        if sHostIp is not None:
+            return sHostIp;
+    return '127.0.0.1';
+
+
+def getPrimaryHostIpByHostname():
+    """
+    Worker for getPrimaryHostIp.
+
+    Attempts to resolve the hostname.
+    """
+    try:
+        return socket.gethostbyname(getHostnameFqdn());
+    except:
+        return '127.0.0.1';
+
+
+def getPrimaryHostIp():
+    """
+    Tries to figure out the primary (the one with default route), local
+    IPv4 address.
+
+    Returns the IP address on success and otherwise '127.0.0.1'.
+    """
+
+    #
+    # This isn't quite as easy as one would think.  Doing a UDP connect to
+    # 255.255.255.255 turns out to be problematic on solaris with more than one
+    # network interface (IP is random selected it seems), as well as linux
+    # where we've seen 127.0.1.1 being returned on some hosts.
+    #
+    # So a modified algorithm first try a known public IP address, ASSUMING
+    # that the primary interface is the one that gets us onto the internet.
+    # If that fails, due to routing or whatever, we try 255.255.255.255 and
+    # then finally hostname resolution.
+    #
+    sHostIp = getPrimaryHostIpByUdp('8.8.8.8');
+    if sHostIp.startswith('127.'):
+        sHostIp = getPrimaryHostIpByUdp('255.255.255.255');
+        if sHostIp.startswith('127.'):
+            sHostIp = getPrimaryHostIpByHostname();
+    return sHostIp;
+
+
+def getHostnameFqdn():
+    """
+    Wrapper around getfqdn.
+
+    Returns the fully qualified hostname, None if not found.
+    """
+
+    try:
+        sHostname = socket.getfqdn();
+    except:
+        return None;
+
+    if '.' in sHostname or sHostname.startswith('localhost'):
+        return sHostname;
+
+    #
+    # Somewhat misconfigured system, needs expensive approach to guessing FQDN.
+    # Get address information on the hostname and do a reverse lookup from that.
+    #
+    try:
+        aAddressInfo = socket.getaddrinfo(sHostname, None);
+    except:
+        return sHostname;
+
+    for aAI in aAddressInfo:
+        try:    sName, _ = socket.getnameinfo(aAI[4], 0);
+        except: continue;
+        if '.' in sName and not set(sName).issubset(set('0123456789.')) and not sName.startswith('localhost'):
+            return sName;
+
+    return sHostname;
+