mirror of
https://github.com/richb-hanover/OpenWrtScripts.git
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7eec6fb65f
This is usually ".local", but might be ".lan" Use same code in print-router-label.sh and config-spare-router.sh
106 lines
3.2 KiB
Bash
106 lines
3.2 KiB
Bash
#!/bin/sh
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# Print Router Label
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# Usage: sh print-router-label.sh root-password
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# This script retrieves values from an OpenWrt router to create a
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# label that contains the LAN address and credentials.
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# Tape this label to the side of the router so the next person
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# to encounter the router (which may be you) can access it.
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# This process is reasonably secure - if the bad guy
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# can read the label, they can also factory-reset the router
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# (or steal your TV or your silverware).
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#
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# Pro-tip: Snip out the power brick label, and tape it to the
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# power brick so the router and brick don't get separated.
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#
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# Pro-tip: Printing the label in 12-point type produces a
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# "business card" size label. Small text, but readable.
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#
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# If no root-password is supplied, the script prints "?".
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# You can then write the password on the label.
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# If the Wifi is open, its password is printed as "<no password>"
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#
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# Here's a sample label created from the Usage above:
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# ======= Printed with: print-router-label.sh =======
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# Device: Linksys E8450 (UBI)
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# OpenWrt: OpenWrt 23.05.5 r24106-10cc5fcd00
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# Connect to: http://Belkin-RT3200.local
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# or: ssh root@Belkin-RT3200.local
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# LAN: 192.168.253.1
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# User: root
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# Login PW: root-password
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# Wifi SSID: My Wifi SSID
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# Wifi PW: <no password>
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# Configured: 2024-11-28
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# === See github.com/richb-hanover/OpenWrtScripts ===
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#
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# Label for Power Brick: Linksys E8450 (UBI)
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#
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print_router_label() {
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local ROOTPASSWD="${1:-"?"}"
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TODAY=$(date +"%Y-%m-%d")
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DEVICE=$(cat /tmp/sysinfo/model)
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OPENWRTVERSION=$(grep "DISTRIB_DESCRIPTION" /etc/openwrt_release | cut -d"=" -f2 | tr -d '"' | tr -d "'")
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HOSTNAME=$(uci get system.@system[0].hostname)
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LANIPADDRESS=$(uci get network.lan.ipaddr)
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LOCALDNSTLD=$(uci get dhcp.@dnsmasq[0].domain) # top level domain for local names
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# Create temporary file for both SSID and password
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TMPFILE=$(mktemp /tmp/wifi_creds.XXXXXX)
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# Get wifi credentials
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uci show wireless |\
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egrep =wifi-iface$ |\
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cut -d= -f1 |\
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while read s;
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do uci -q get $s.disabled |\
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grep -q 1 && continue;
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id=$(uci -q get $s.ssid);
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key=$(uci -q get $s.key);
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# Write both SSID and password to temporary file
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echo "$id:$key" > "$TMPFILE"
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break
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done
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# Read both values from temporary file
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if [ -f "$TMPFILE" ]; then
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WIFISSID=$(cut -d: -f1 "$TMPFILE")
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WIFIPASSWD=$(cut -d: -f2 "$TMPFILE")
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# Check if password is empty and replace with "<no password>"
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if [ -z "$WIFIPASSWD" ]; then
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WIFIPASSWD="<no password>"
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fi
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else
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WIFISSID="unknown"
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WIFIPASSWD="unknown"
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fi
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# Clean up temporary file
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rm -f "$TMPFILE"
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echo ""
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echo "Print the following label and tape it to the router..."
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echo ""
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echo "======= Printed with: print-router-label.sh ======="
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echo " Device: $DEVICE"
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echo " OpenWrt: $OPENWRTVERSION"
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echo " Connect to: http://$HOSTNAME.$LOCALDNSTLD"
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echo " or: ssh root@$HOSTNAME.$LOCALDNSTLD"
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echo " LAN: $LANIPADDRESS"
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echo " User: root"
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echo " Login PW: $ROOTPASSWD"
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echo " Wifi SSID: $WIFISSID"
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echo " Wifi PW: $WIFIPASSWD"
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echo " Configured: $TODAY"
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echo "=== See github.com/richb-hanover/OpenWrtScripts ==="
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echo ""
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echo "Label for Power Brick: $DEVICE"
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echo ""
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}
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print_router_label "$1"
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