From 0b4b929c889fb8f9ae1f0dab4c1fea029512a6b5 Mon Sep 17 00:00:00 2001
From: Michael Rasmussen <mir@datanom.net>
Date: Wed, 5 Apr 2017 21:01:10 +0200
Subject: [PATCH] add option to print create commands to stdout

---
 netconf | 72 +++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 47 insertions(+), 25 deletions(-)

diff --git a/netconf b/netconf
index a4811ca..2f0694f 100644
--- a/netconf
+++ b/netconf
@@ -6,7 +6,7 @@
 # 1.0 of the CDDL.
 #
 # A full copy of the text of the CDDL should have accompanied this
-# source.  A copy of the CDDL is also available via the Internet at
+# source. A copy of the CDDL is also available via the Internet at
 # http://www.illumos.org/license/CDDL.
 #
 
@@ -153,14 +153,15 @@ def parse_input():
 
     try:
 	opts, args = getopt.gnu_getopt(sys.argv[1:],
-                'ha:g:i:m:n:', ['help', 'address=', 'gateway=',
-		'interface=', 'netmask=', 'nameserver='])
+                'ha:g:i:m:n:r', ['help', 'address=', 'gateway=',
+		'interface=', 'netmask=', 'nameserver=', 'record'])
     except getopt.GetoptError as err:
 	print str(err)
 	usage()
 	sys.exit(2)
 
     address = gateway = interface = netmask = nameserver = None
+    record = False
 
     if opts:
 	for o, a in opts:
@@ -177,6 +178,8 @@ def parse_input():
 		netmask = a
 	    elif o in ('-n', '--nameserver'):
 		nameserver = a
+	    elif o in ('-r', '--record'):
+		record = True
 	    else:
 		assert False, 'Unhandled option'
     
@@ -224,34 +227,50 @@ def main():
 		    mask = options[2]
 		    gw = options[3]
                 cmd = 'ipadm delete-if %s' % nic[0]
-                runcmd(cmd)
+		if record:
+		    print cmd
+		else:
+		    runcmd(cmd)
                 cmd = 'ipadm create-if %s' % nic[0]
-                (out, err) = runcmd(cmd)
-                if err:
-                    raise RuntimeError(err)
+		if record:
+		    print cmd
+		else:
+		    (out, err) = runcmd(cmd)
+		    if err:
+			raise RuntimeError(err)
                 if not ip:
                     # use DHCP
                     cmd = 'ipadm create-addr -T dhcp %s/v4' % nic[0]
-                    (out, err) = runcmd(cmd)
-                    if err:
-                        raise RuntimeError(err)
+		    if record:
+			print cmd
+		    else:
+			(out, err) = runcmd(cmd)
+			if err:
+			    raise RuntimeError(err)
                 else:
                     # use STATIC
                     cmd = 'ipadm create-addr -T static -a %s/%s %s/v4' % (ip, mask, nic[0])
-                    (out, err) = runcmd(cmd)
-                    if err:
-                        raise RuntimeError(err)
+		    if record:
+			print cmd
+		    else:
+			(out, err) = runcmd(cmd)
+			if err:
+			    raise RuntimeError(err)
                     if gw:
                         cmd = 'route -p add default %s' % gw
-                        (out, err) = runcmd(cmd)
-                        if err:
-                            raise RuntimeError(err)
-                cmd = 'netstat -rn -finet'
-                (out, err) = runcmd(cmd)
-                if err:
-                    raise RuntimeError(err)
-                print 'New route table'
-                print out
+			if record:
+			    print cmd
+			else:
+			    (out, err) = runcmd(cmd)
+			    if err:
+				raise RuntimeError(err)
+		if not record:
+		    cmd = 'netstat -rn -finet'
+		    (out, err) = runcmd(cmd)
+		    if err:
+			raise RuntimeError(err)
+		    print 'New route table'
+		    print out
 		if interactive:
 		    dns = raw_input('Configure DNS [n]? ').lower()
 		else:
@@ -268,9 +287,12 @@ def main():
                     cmd = "echo 'nameserver %s' >> /etc/resolv.conf " % dns
                     cmd += '&& cp /etc/nsswitch.conf{,.bak} '
                     cmd += '&& cp /etc/nsswitch.{dns,conf}'
-                    (out, err) = runcmd(cmd)
-                    if err:
-                        raise RuntimeError(err)
+		    if record:
+			print cmd
+		    else:
+			(out, err) = runcmd(cmd)
+			if err:
+			    raise RuntimeError(err)
         else:
             print "Found no unassigned interfaces"
     except ParserError as e:
-- 
2.39.2