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-rw-r--r--src/wireless61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/wireless b/src/wireless
new file mode 100644
index 0000000..405b86b
--- /dev/null
+++ b/src/wireless
@@ -0,0 +1,61 @@
+# Uses wireless_tools, to check for association to a network.
+# wep_check interface [timeout]
+wep_check()
+{
+ INTERFACE=$1; TIMEOUT=$2
+
+ [[ -z "$TIMEOUT" ]] && TIMEOUT=15
+ let timeout=0
+ while [[ $timeout -ne $TIMEOUT ]]; do
+ bssid=`iwgetid $INTERFACE -ra`
+ [[ ! "$bssid" = "00:00:00:00:00:00" ]] && return 0
+ sleep 1
+ let timeout++
+ done
+
+ err_append "Wireless association failed"
+ return 1
+}
+
+# Check if a particular network is within range
+# find_essid interface essid
+find_essid()
+{
+ INTERFACE=$1; ESSID=$2; RETRIES=5
+ try=0;
+ while [[ $try -ne $RETRIES ]]; do
+ if iwlist $INTERFACE scan|sed "s/ESSID://g"|grep -q "\"$ESSID\""; then
+ return 0 # network found
+ fi
+ sleep 1
+ let try++
+ done
+ return 1
+}
+
+# Return a filename containing a list of network ESSID's found.
+# list_networks interface
+list_networks()
+{
+ # temp file used, as keeping ESSID's with spaces in their name in arrays
+ # is hard, obscure and kinda nasty. This is simpler and clearer.
+
+ [[ -z "$1" ]] && return 1
+ essids=$(mktemp /tmp/essid.XXXXX)
+
+ let try=0;
+ RETRIES=6;
+ while [[ $try -ne $RETRIES ]]; do
+ iwlist $1 scan 2> /dev/null|grep ESSID|sed 's/.*ESSID:"\([^"]\+\)".*/\1/' > $essids
+ sleep 0.5; let try++
+ done
+ sort -u $essids -o $essids
+
+ # File of 0 length, ie. no ssid's.
+ if [[ ! -s $essids ]]; then
+ return 1
+ fi
+
+ echo $essids
+ return 0
+}