File: test-wireless-scan

package info (click to toggle)
guessnet 0.56
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, jessie, jessie-kfreebsd, stretch
  • size: 1,064 kB
  • ctags: 863
  • sloc: cpp: 5,355; sh: 1,432; makefile: 168; perl: 118
file content (79 lines) | stat: -rwxr-xr-x 1,830 bytes parent folder | download | duplicates (3)
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
#!/bin/bash
#
# test-wireless-scan
#
# History
# Oct 2004: Written by Thomas Hood

set -o errexit   # -e
set -o noglob    # -f

MYNAME="$(basename $0)"
PATH=/sbin:/bin

usage() {
cat <<EOT
Usage: $MYNAME <IFACE> [mac <MACADDRESS>] [essid <ESSID>]
       $MYNAME --help|-h

Tests whether an access point is in range [with the appropriate
MAC address] [and appropriate ESSID] by looking at the output of
"iwlist IFACE scan".

MACADDRESS letters must be in upper case

Licensed under the GNU GPL.  See /usr/share/common-licenses/GPL.

Options:
	--help|-h     Print this help
EOT
}

report_err() { echo "${MYNAME}: Error: $*" >&2 ; }

do_sleep() { LANG=C sleep "$@" ; }

is_ethernet_mac()
{
	[ "$1" ] && [ ! "${1##[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]:[0-9A-F][0-9A-F]}" ]
}

if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
    usage
    exit 0
fi

IFACE="$1"
[ "$IFACE" ] || { report_err "Interface not specified.  Exiting." ; exit 1 ; }
shift
while [ "$2" ] ; do
	case "$1" in
		mac)
			MAC_ADDRESS=$(echo "$1" | tr a-f A-F)
			is_ethernet_mac "$MAC_ADDRESS" || { report_err "Argument of 'mac' is not a MAC address" ; exit 1 ; }
			;;
		essid)
			ESSID="$2"
			;;
	esac
	shift 2
done

[ "$MAC_ADDRESS" ] || [ "$ESSID" ] || { report_err "Neither AP MAC address nor ESSID specified.  Exiting." ; exit 1 ; }

ifconfig "$IFACE" up
do_sleep 0.5
SCAN="$(iwlist "$IFACE" scan 2>&1)"
ifconfig "$IFACE" down

shopt -s extglob  # We need this to allow the ?( ) syntax in patterns
[ "$SCAN" = "${SCAN/Interface doesn?t support scanning/}" ] || exit 1
[ "$SCAN" = "${SCAN/Operation not supported/}" ] || exit 1
if [ "$MAC_ADDRESS" ] ; then
	[ "$SCAN" != "${SCAN/Address:*( )$MAC_ADDRESS/}" ] || exit 1
fi
if [ "$ESSID" ] ; then
	[ "$SCAN" != "${SCAN/ESSID:*( )?${ESSID}?/}" ] || exit 1
fi
exit 0