76 lines
1.8 KiB
Bash
Executable File
76 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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#### Watchdog
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#### webcamd - A webcam Service for multiple Cams and Stream Services.
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####
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#### written by Stephan Wendel aka KwadFan
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#### Copyright 2021
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#### https://github.com/mainsail-crew/crowsnest
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####
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#### This File is distributed under GPLv3
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####
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# shellcheck enable=require-variable-braces
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# Exit upon Errors
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set -e
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#### Watchdog Functions and Variables
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## Do not reuse functions from other libs/scripts!
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# We want watchdog operating independently!
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function clean_watchdog {
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rm -f /tmp/lost-*
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}
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function webcamd_watchdog {
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# Helper Functions
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function available {
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find "${1}" &> /dev/null
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echo "${?}"
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}
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function lost_dev {
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local lostfile
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lostfile="$(echo "${1}" | awk -F '/' '{print $NF}')"
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touch /tmp/lost-"${lostfile}"
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}
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function is_lost {
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local lostdev
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lostdev="$(echo "${1}" | awk -F '/' '{print $NF}')"
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find /tmp/lost-"${lostdev}" &> /dev/null
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echo "${?}"
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}
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function returned_dev {
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local lostdev
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lostdev="$(echo "${1}"| awk -F '/' '{print $NF}')"
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rm -f /tmp/lost-"${lostdev}" &> /dev/null
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}
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function get_conf_devices {
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local gcd
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for i in $(crudini --existing=file --get "${WEBCAMD_CFG}" | \
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sed '/webcamd/d' | cut -d ' ' -f2); do
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gcd+=("${i}")
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done
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echo "${gcd[@]}"
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}
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### MAIN
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for i in $(get_conf_devices); do
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cc="$(crudini --get "${WEBCAMD_CFG}" "cam ${i}" "device" \
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| awk '{print $1}')"
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if [ "$(available "${cc}")" -ne 0 ] && [ "$(is_lost "${cc}")" -ne 0 ]; then
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log_msg "WATCHDOG: Lost Device: '${cc}'"
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lost_dev "${cc}"
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elif [ "$(is_lost "${cc}")" -eq 0 ] && [ "$(available "${cc}")" -eq 0 ]; then
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log_msg "WATCHDOG: Device '${cc}' returned."
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returned_dev "${cc}"
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fi
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done
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}
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