1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
# vi: ts=4 expandtab
#
# Copyright (C) 2012 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# 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 <http://www.gnu.org/licenses/>.
import cloudinit.util as util
import re
from prettytable import PrettyTable
def netdev_info(empty=""):
fields = ("hwaddr", "addr", "bcast", "mask")
(ifcfg_out, _err) = util.subp(["ifconfig", "-a"])
devs = {}
for line in str(ifcfg_out).splitlines():
if len(line) == 0:
continue
if line[0] not in ("\t", " "):
curdev = line.split()[0]
devs[curdev] = {"up": False}
for field in fields:
devs[curdev][field] = ""
toks = line.lower().strip().split()
if toks[0] == "up":
devs[curdev]['up'] = True
# If the output of ifconfig doesn't contain the required info in the
# obvious place, use a regex filter to be sure.
elif len(toks) > 1:
if re.search("flags=\d+<up,", toks[1]):
devs[curdev]['up'] = True
fieldpost = ""
if toks[0] == "inet6":
fieldpost = "6"
for i in range(len(toks)):
if toks[i] == "hwaddr" or toks[i] == "ether":
try:
devs[curdev]["hwaddr"] = toks[i + 1]
except IndexError:
pass
"""
Couple the different items we're interested in with the correct field
since FreeBSD/CentOS/Fedora differ in the output.
"""
ifconfigfields = {
"addr:":"addr", "inet":"addr",
"bcast:":"bcast", "broadcast":"bcast",
"mask:":"mask", "netmask":"mask"
}
for origfield, field in ifconfigfields.items():
target = "%s%s" % (field, fieldpost)
if devs[curdev].get(target, ""):
continue
if toks[i] == "%s" % origfield:
try:
devs[curdev][target] = toks[i + 1]
except IndexError:
pass
elif toks[i].startswith("%s" % origfield):
devs[curdev][target] = toks[i][len(field) + 1:]
if empty != "":
for (_devname, dev) in devs.iteritems():
for field in dev:
if dev[field] == "":
dev[field] = empty
return devs
#
# Use netstat instead of route since that produces more portable output.
#
def route_info():
(route_out, _err) = util.subp(["netstat", "-rn"])
routes = []
entries = route_out.splitlines()[1:]
for line in entries:
if not line:
continue
toks = line.split()
"""
FreeBSD shows 6 items in the routing table:
Destination Gateway Flags Refs Use Netif Expire
default 10.65.0.1 UGS 0 34920 vtnet0
Linux netstat shows 2 more:
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 10.65.0.1 0.0.0.0 UG 0 0 0 eth0
"""
if len(toks) < 6 or toks[0] == "Kernel" or toks[0] == "Destination" or toks[0] == "Internet" or toks[0] == "Internet6" or toks[0] == "Routing":
continue
if len(toks) < 8:
toks.append("-")
toks.append("-")
toks[7] = toks[5]
toks[5] = "-"
entry = {
'destination': toks[0],
'gateway': toks[1],
'genmask': toks[2],
'flags': toks[3],
'metric': toks[4],
'ref': toks[5],
'use': toks[6],
'iface': toks[7],
}
routes.append(entry)
return routes
def getgateway():
routes = []
try:
routes = route_info()
except:
pass
for r in routes:
if r['flags'].find("G") >= 0:
return "%s[%s]" % (r['gateway'], r['iface'])
return None
def netdev_pformat():
lines = []
try:
netdev = netdev_info(empty=".")
except Exception:
lines.append(util.center("Net device info failed", '!', 80))
netdev = None
if netdev is not None:
fields = ['Device', 'Up', 'Address', 'Mask', 'Hw-Address']
tbl = PrettyTable(fields)
for (dev, d) in netdev.iteritems():
tbl.add_row([dev, d["up"], d["addr"], d["mask"], d["hwaddr"]])
netdev_s = tbl.get_string()
max_len = len(max(netdev_s.splitlines(), key=len))
header = util.center("Net device info", "+", max_len)
lines.extend([header, netdev_s])
return "\n".join(lines)
def route_pformat():
lines = []
try:
routes = route_info()
except Exception:
lines.append(util.center('Route info failed', '!', 80))
routes = None
if routes is not None:
fields = ['Route', 'Destination', 'Gateway',
'Genmask', 'Interface', 'Flags']
tbl = PrettyTable(fields)
for (n, r) in enumerate(routes):
route_id = str(n)
tbl.add_row([route_id, r['destination'],
r['gateway'], r['genmask'],
r['iface'], r['flags']])
route_s = tbl.get_string()
max_len = len(max(route_s.splitlines(), key=len))
header = util.center("Route info", "+", max_len)
lines.extend([header, route_s])
return "\n".join(lines)
def debug_info(prefix='ci-info: '):
lines = []
netdev_lines = netdev_pformat().splitlines()
if prefix:
for line in netdev_lines:
lines.append("%s%s" % (prefix, line))
else:
lines.extend(netdev_lines)
route_lines = route_pformat().splitlines()
if prefix:
for line in route_lines:
lines.append("%s%s" % (prefix, line))
else:
lines.extend(route_lines)
return "\n".join(lines)
|
