107 lines
3.2 KiB
Bash
Executable File
107 lines
3.2 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# HTTPS availability watchdog for Les Petites Leçons de Frédéric (punycode host).
|
|
# Intended path on proxy: /opt/proxy-config/scripts/watch-https-lpldf.sh
|
|
# Optional env file (root-only recommended): /opt/proxy-config/scripts/env/watch-https-lpldf.env
|
|
# Syslog identifier: lpldf-https-watch (for SIEM / Wazuh-style log collection).
|
|
set -euo pipefail
|
|
|
|
_IA_DEV_TOOLS="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
|
|
if [[ -f "${_IA_DEV_TOOLS}/lib/smart_ide_logs.sh" ]]; then
|
|
# shellcheck source=../lib/smart_ide_logs.sh
|
|
source "${_IA_DEV_TOOLS}/lib/smart_ide_logs.sh"
|
|
smart_ide_logs_begin "$_IA_DEV_TOOLS" "$0" "$*"
|
|
smart_ide_logs_register_exit_trap
|
|
fi
|
|
|
|
readonly WATCH_URL="${WATCH_URL:-https://xn--lespetitesleonsdefrdric-89b1db.fr/}"
|
|
readonly STATE_DIR="${STATE_DIR:-/var/lib/lpldf-https-watch}"
|
|
readonly STATE_FILE="${STATE_DIR}/last_state"
|
|
readonly LAST_ALERT_FILE="${STATE_DIR}/last_alert_epoch"
|
|
readonly LOG_TAG="lpldf-https-watch"
|
|
|
|
ENV_FILE="${ENV_FILE:-/opt/proxy-config/scripts/env/watch-https-lpldf.env}"
|
|
if [[ -f "$ENV_FILE" ]]; then
|
|
set -a
|
|
# shellcheck disable=SC1090
|
|
source "$ENV_FILE"
|
|
set +a
|
|
fi
|
|
|
|
readonly ALERT_REPEAT_SECONDS="${ALERT_REPEAT_SECONDS:-3600}"
|
|
|
|
mkdir -p "$STATE_DIR"
|
|
|
|
last="OK"
|
|
if [[ -f "$STATE_FILE" ]]; then
|
|
last="$(tr -d '\n' <"$STATE_FILE" || true)"
|
|
fi
|
|
[[ -z "$last" ]] && last="OK"
|
|
|
|
http_code="000"
|
|
if ! http_code="$(curl -sS -o /dev/null -w '%{http_code}' --max-time 25 "$WATCH_URL" 2>/dev/null)"; then
|
|
http_code="000"
|
|
fi
|
|
[[ -z "$http_code" ]] && http_code="000"
|
|
|
|
is_ok="false"
|
|
if [[ "$http_code" =~ ^(200|301|302|307|308)$ ]]; then
|
|
is_ok="true"
|
|
fi
|
|
|
|
send_notifications() {
|
|
local message="$1"
|
|
logger -t "$LOG_TAG" -p daemon.warning "$message"
|
|
if [[ -n "${ALERT_WEBHOOK_URL:-}" ]]; then
|
|
curl -sS -X POST "${ALERT_WEBHOOK_URL}" \
|
|
-H "Content-Type: text/plain; charset=utf-8" \
|
|
--data-binary "$message" \
|
|
--max-time 15 || logger -t "$LOG_TAG" -p daemon.err "ALERT_WEBHOOK_URL post failed"
|
|
fi
|
|
if [[ -n "${ALERT_EMAIL_TO:-}" ]] && command -v mail >/dev/null 2>&1; then
|
|
printf '%s\n' "$message" | mail -s "LPLDF HTTPS down" "$ALERT_EMAIL_TO" || logger -t "$LOG_TAG" -p daemon.err "mail alert failed"
|
|
fi
|
|
}
|
|
|
|
notify_recovery() {
|
|
local message="$1"
|
|
logger -t "$LOG_TAG" -p daemon.info "$message"
|
|
if [[ -n "${ALERT_WEBHOOK_URL_RECOVER:-}" ]]; then
|
|
curl -sS -X POST "${ALERT_WEBHOOK_URL_RECOVER}" \
|
|
-H "Content-Type: text/plain; charset=utf-8" \
|
|
--data-binary "$message" \
|
|
--max-time 15 || true
|
|
fi
|
|
}
|
|
|
|
now_epoch="$(date +%s)"
|
|
|
|
if [[ "$is_ok" == "true" ]]; then
|
|
if [[ "$last" == "DOWN" ]]; then
|
|
notify_recovery "LPLDF HTTPS recovered: ${WATCH_URL} HTTP ${http_code}"
|
|
fi
|
|
printf '%s\n' "OK" >"$STATE_FILE"
|
|
exit 0
|
|
fi
|
|
|
|
msg="LPLDF HTTPS check FAIL: ${WATCH_URL} HTTP=${http_code}"
|
|
|
|
if [[ "$last" != "DOWN" ]]; then
|
|
printf '%s\n' "DOWN" >"$STATE_FILE"
|
|
printf '%s\n' "$now_epoch" >"$LAST_ALERT_FILE"
|
|
send_notifications "$msg"
|
|
exit 1
|
|
fi
|
|
|
|
last_alert="0"
|
|
if [[ -f "$LAST_ALERT_FILE" ]]; then
|
|
last_alert="$(tr -d '\n' <"$LAST_ALERT_FILE" || echo 0)"
|
|
fi
|
|
[[ -z "$last_alert" ]] && last_alert="0"
|
|
|
|
if [[ "$((now_epoch - last_alert))" -ge "$ALERT_REPEAT_SECONDS" ]]; then
|
|
printf '%s\n' "$now_epoch" >"$LAST_ALERT_FILE"
|
|
send_notifications "$msg (still down, repeat every ${ALERT_REPEAT_SECONDS}s)"
|
|
fi
|
|
|
|
exit 1
|