2023-07-26 15:47:29 +02:00
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#!/bin/sh
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ssid="${1:-}"
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if [ -z "$ssid" ]; then
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ssid="$(wpa_cli status | rg -o --replace='$1' '^ssid=(.*)$')"
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fi
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if [ -z "$ssid" ]; then
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echo "Not connected to a WiFi network via wpa_supplicant"
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echo "Use $0 <ssid> [password]" to share another WiFi network
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exit 1
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fi
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pw="${2:-}"
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if [ -z "$pw" ]; then
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2023-07-26 18:12:57 +02:00
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pw="$(sudo cat /etc/wpa_supplicant/wpa_supplicant.conf | sed -n '/^[\t ]*ssid="'"$ssid"'"$/{:findpsk;N;/}/d;/\n[\t ]*psk=/!b findpsk;s/^\(\n\|.\)*[\t ]*psk="\([^"]*\)"$/\2/p; t quit}; d; :quit; q')"
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2023-07-26 15:47:29 +02:00
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fi
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if [ -z "$pw" ]; then
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echo "Couldn't find password for network \`$ssid\`"
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echo "Use $0 <ssid> <password>" to share a specific SSID and password
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exit 1
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else
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echo "Sharing network \`$ssid\`"
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fi
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if [ -z "$ssid" ] || [ -z "$pw" ]; then
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echo "Missing SSID or password"
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exit 1
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fi
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if printf '%s' "$pw" | grep -qF ';'; then
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echo "Password contains ;, I didn't look up how to handle that case"
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exit 1
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fi
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rm -f /tmp/qr.png
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printf '%s' "WIFI:T:WPA;S:$ssid;P:$pw;;" | qrencode -s 10 -o /tmp/qr.png
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nsxiv /tmp/qr.png
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