mirror of
https://github.com/kuhyx/testsAndMisc.git
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77 lines
1.9 KiB
Bash
Executable File
77 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# i3blocks ethernet indicator with one external helper at most.
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set -euo pipefail
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SCRIPT_DIR=${BASH_SOURCE[0]%/*}
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[[ $SCRIPT_DIR == "${BASH_SOURCE[0]}" ]] && SCRIPT_DIR='.'
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# shellcheck source=linux_configuration/i3-configuration/i3blocks/persist_common.sh
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source "$SCRIPT_DIR/persist_common.sh"
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find_ethernet_interface() {
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local iface_path iface
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for iface_path in /sys/class/net/*; do
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iface=${iface_path##*/}
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[[ $iface == lo ]] && continue
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[[ -d ${iface_path}/wireless ]] && continue
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[[ -r ${iface_path}/operstate ]] || continue
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printf '%s\n' "$iface"
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return 0
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done
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return 1
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}
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emit() {
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local iface state addr_output output_line
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iface=$(find_ethernet_interface) || {
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output_line=' down'
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if i3blocks_update_if_changed_key "ethernet_output" "$output_line"; then
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printf '%s\n' "$output_line"
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fi
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return 0
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}
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read -r state < "/sys/class/net/${iface}/operstate"
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if [[ $state != up ]]; then
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output_line=' down'
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if i3blocks_update_if_changed_key "ethernet_output" "$output_line"; then
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printf '%s\n' "$output_line"
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fi
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return 0
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fi
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addr_output=$(ip -o -4 addr show dev "$iface" scope global 2> /dev/null) || addr_output=''
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if [[ $addr_output =~ ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/[0-9]+) ]]; then
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output_line=" ${BASH_REMATCH[1]}"
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else
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output_line=' down'
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fi
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if i3blocks_update_if_changed_key "ethernet_output" "$output_line"; then
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printf '%s\n' "$output_line"
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fi
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}
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is_persist_mode() {
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[[ ${BLOCK_INTERVAL:-} == "persist" ]]
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}
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emit_throttled() {
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if ! i3blocks_should_emit_by_interval_key "ethernet_emit" "$EMIT_MIN_INTERVAL_S"; then
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return 0
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fi
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emit
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}
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EMIT_MIN_INTERVAL_S=2
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emit
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if is_persist_mode; then
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ip monitor link address route 2> /dev/null |
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while read -r line; do
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[[ $line == *"eth"* || $line == *"en"* || $line == *"inet "* ]] || continue
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emit_throttled
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done
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fi
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