echo "快速检查全部的SSL证书过期时间"
urlArray=( \
"www.jd.com:443" \
"www.baidu.com:443" \
"www.bing.com:443" \
);

# 定义颜色变量
RED='\e[1;31m'
GREEN='\e[1;32m'
YELLOW='\e[1;33m'
BLUE='\e[1;34m'
NC='\e[0m' # No Color (重置颜色)

for url in ${urlArray[@]};
do
	printf "%-30s " $url
	expiry_date=$(echo | openssl s_client -connect $url 2>/dev/null | openssl x509 -noout -enddate 2>/dev/null | cut -d= -f2 | xargs -I {} date -d {} "+%Y-%m-%d")
	if [ "${#expiry_date}" -eq 10 ]; then
		expiry_timestamp=$(date -d "$expiry_date" +%s)
		current_timestamp=$(date +%s)
		diff_seconds=$((expiry_timestamp - current_timestamp))
		diff_days=$((diff_seconds / 86400))
		printf "证书过期日期: $expiry_date 08:00 (UTC+8)"
		if [[ "$diff_days" -lt 30 ]]; then
			printf " 剩余: ${RED}%4s天${NC}\n" $diff_days
		else
			printf " 剩余: %4s天\n" $diff_days
		fi
	else
		echo "获取证书过期日期失败"
	fi
done;