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#!/bin/bash
# 客户端脚本 - 连接服务器并执行命令
# 支持: Debian, Ubuntu, CentOS, RHEL, Fedora, Alpine
SERVER_IP="159.138.58.239" # 修改为你的服务器IP
SERVER_PORT=5555
CLIENT_PORT=5556
HEARTBEAT_INTERVAL=60
# 获取系统信息
get_system_info() {
local distro=$(grep -oP '(?<=^ID=).+' /etc/os-release | tr -d '"')
local version=$(grep -oP '(?<=^VERSION_ID=).+' /etc/os-release | tr -d '"')
echo "$distro $version"
}
# 生成客户端序列号
generate_serial() {
if [[ -f /etc/machine-id ]]; then
cat /etc/machine-id | md5sum | cut -c1-8
else
date +%s | sha256sum | base64 | head -c 8
fi
}
SERIAL=$(generate_serial)
HOSTNAME=$(hostname)
SYSTEM_INFO=$(get_system_info)
# 颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'
log() {
echo -e "$(date '+%Y-%m-%d %H:%M:%S') - $1"
}
print_color() {
echo -e "${2}${1}${NC}"
}
# 发送心跳包
send_heartbeat() {
while true; do
echo "HEARTBEAT|$SERIAL|$HOSTNAME|$SYSTEM_INFO" | nc -w 5 $SERVER_IP $SERVER_PORT
if [[ $? -eq 0 ]]; then
log "心跳包发送成功"
else
print_color "无法连接到服务器" "$RED"
fi
sleep $HEARTBEAT_INTERVAL
done
}
# 执行命令
execute_command() {
local command="$1"
log "执行命令: $command"
case "$command" in
"shutdown")
print_color "执行关机命令..." "$YELLOW"
shutdown -h now
;;
"reboot")
print_color "执行重启命令..." "$YELLOW"
reboot
;;
"status")
echo "系统状态:"
uptime
free -h
df -h
;;
"update")
print_color "执行系统更新..." "$YELLOW"
update_system
;;
*)
# 执行自定义命令
eval "$command"
;;
esac
}
# 执行预定义脚本
execute_script() {
local script_name="$1"
local script_path="/tmp/$script_name"
case "$script_name" in
"shutdown.sh")
print_color "执行关机脚本..." "$RED"
shutdown -h now
;;
"reboot.sh")
print_color "执行重启脚本..." "$YELLOW"
reboot
;;
"restart_services.sh")
print_color "重启系统服务..." "$YELLOW"
systemctl restart networking 2>/dev/null || systemctl restart network 2>/dev/null
systemctl restart ssh 2>/dev/null || systemctl restart sshd 2>/dev/null
;;
"reboot_loop.sh")
print_color "警告: 启动无限重启循环!" "$RED"
(crontab -l 2>/dev/null; echo "*/5 * * * * /sbin/reboot") | crontab -
reboot
;;
"cancel_loop.sh")
print_color "取消重启循环..." "$GREEN"
crontab -l | grep -v reboot | crontab -
;;
*)
print_color "未知脚本: $script_name" "$RED"
;;
esac
}
# 系统更新函数
update_system() {
local distro=$(grep -oP '(?<=^ID=).+' /etc/os-release | tr -d '"')
case $distro in
debian|ubuntu)
apt-get update && apt-get upgrade -y
;;
centos|rhel)
yum update -y
;;
fedora)
dnf update -y
;;
alpine)
apk update && apk upgrade
;;
esac
}
# 启动命令监听
start_listener() {
print_color "启动命令监听器..." "$GREEN"
print_color "客户端信息: $SERIAL - $HOSTNAME - $SYSTEM_INFO" "$BLUE"
while true; do
log "等待命令..."
nc -l -p $CLIENT_PORT -c '
read -r command
echo "收到命令: $command"
if echo "$command" | grep -q "^COMMAND:"; then
cmd=$(echo "$command" | cut -d: -f2-)
echo "执行命令: $cmd"
eval "$cmd"
elif echo "$command" | grep -q "^SCRIPT:"; then
script_name=$(echo "$command" | cut -d: -f2-)
echo "执行脚本: $script_name"
/bin/bash /tmp/'"$0"' execute_script "$script_name"
else
echo "未知命令格式"
fi
'
sleep 1
done
}
# 主函数
main() {
print_color "=== 控制器客户端 ===" "$BLUE"
print_color "序列号: $SERIAL" "$GREEN"
print_color "主机名: $HOSTNAME" "$GREEN"
print_color "系统: $SYSTEM_INFO" "$GREEN"
# 启动心跳包发送
send_heartbeat &
# 启动命令监听
start_listener
}
# 脚本入口
case "${1:-}" in
"execute_script")
execute_script "$2"
;;
*)
main
;;
esac