interface_information.sh
2.5 KB
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
##
# retrieve interfaces. I prefer using ip if it is
# available, else I fallback to ifconfig... don't know
# how to retrieve this information on other systems.
# This also exports the environment variables.
#
gather_interface_info() {
[ -z "${NINTERFACES}" ] || return
local NO=1
if [ ${IP} ]
then
gather_if_info_ip
else
if [ ${IFCONFIG} ]
then
gather_if_info_ifconfig
else
${LOGGER} -p local0.warn 'Found no way to retrieve interface information.'
fi
fi
export NINTERFACES
while [ ${NO} -le ${NINTERFACES:=0} ]
do
export IF${NO}_NAME IF${NO}_MAC IF${NO}_STATE IF${NO}_IPV4 IF${NO}_IPV6
NO=$((NO+1))
done
}
##
# get the interface information from the ip tool
#
gather_if_info_ip() {
eval $(${IP} -o link | ${AWK} '{
sub(/:/,"",$1);
no=$1;
sub(/:/,"",$2);
name=$2;
classes=classes "net_iface_" name " ";
for (i=3; i<NF; i++) {
if ($i == "state") {
i++; state=$i
}
if ($i ~ /link/) {
i++; mac=$i;
classes=classes mac " "
}
}
print "IF" no "_NAME=" name ";IF" no "_STATE=" state ";IF" no "_MAC=" mac ";";
if ("UP" == state) classes=classes mac " "
}
BEGIN {
classes=""
}
END {
print "set_class " classes ";";
print "NINTERFACES=" FNR ";"
}')
eval $(${IP} -o addr | ${AWK} '{
sub(/:/,"",$1);
no=$1;
if ($3 == "inet") {
sub(/[\/%].*/,"",$4);
print "IF" no "_IPV4=\"${IF" no "_IPV4}" $4 " \";";
classes=classes $4 " "
}
if ($3 == "inet6") {
sub(/[\/%].*/,"",$4);
print "IF" no "_IPV6=\"${IF" no "_IPV6}" $4 " \";";
classes=classes $4 " "
}
}
BEGIN {
classes=""
}
END {
print "set_class " classes ";"
}')
}
##
# get interface data via the ifconfig tool
# FIXME This is outdated. It does not set classes at all.
#
gather_if_info_ifconfig() {
eval $(${IFCONFIG} -a | ${AWK} '
/ether/ { mac=$2 }
/inet / { ipv4=ipv4 $2 " " }
/inet6/ { ipv6=ipv6 $2 " " }
/^[^ \t]/ {
if ("" != ipv4 || "" != ipv6) state="UP"; else state="DOWN";
if ("" != name) {
print "IF" no "_NAME=" name ";IF" no "_STATE=" state ";IF" no "_MAC=" mac ";" \
"IF" no "_IPV4=\"${IF" no "_IPV4}" ipv4 " \";" \
"IF" no "_IPV6=\"${IF" no "_IPV6}" ipv6 " \";";
no++;
}
ipv4=ipv6="";
sub(/:/,"",$1);
name=$1
}
BEGIN {
no=1;
}
END {
if ("" != ipv4 || "" != ipv6) state="UP"; else state="DOWN";
print "IF" no "_NAME=" name ";IF" no "_STATE=" state ";IF" no "_MAC=" mac ";" \
"IF" no "_IPV4=\"${IF" no "_IPV4}" ipv4 " \";" \
"IF" no "_IPV6=\"${IF" no "_IPV6}" ipv6 " \";";
print "NINTERFACES=" no
}')
}
# vim: set ts=4 sw=4: