497 lines
17 KiB
Bash
Executable File
497 lines
17 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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SERVICE_NAME="nodeflare-agent"
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INSTALL_DIR="/opt/nodeflare"
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AGENT_FILE="$INSTALL_DIR/agent"
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STATE_ROOT="/etc/nodeflare"
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STATE_DIR="$STATE_ROOT/agent"
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SERVICE_FILE="/etc/systemd/system/$SERVICE_NAME.service"
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OPENRC_FILE="/etc/init.d/$SERVICE_NAME"
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temporary=""
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backup_agent=""
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backup_service=""
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rollback_agent=false
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had_agent=false
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had_service=false
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update=false
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usage() {
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cat <<'EOF'
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NodeFlare Agent 安装脚本
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用法：
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agent.sh -e <NodeFlare URL> -t <Agent Token> [-i <历史保存间隔>] [-m <下载加速前缀>]
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agent.sh --update [-m <下载加速前缀>]
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agent.sh --status
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agent.sh --uninstall
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参数：
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-e NodeFlare 服务地址（必填）
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-t 后台生成的 Agent Token（必填，请勿泄露）
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-i 初始历史保存间隔，15-3600 秒（默认 60）
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-m GitHub 下载加速前缀（可选，如 https://ghproxy.net）
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EOF
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}
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log() {
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printf '%s\n' "$1"
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}
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fail() {
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printf '错误：%s\n' "$1" >&2
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exit 1
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}
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print_install_result() {
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if [ "$update" = true ] || [ "$had_agent" = true ]; then
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printf '\n更新完成（v%s）\n' "$installed_version"
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return
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fi
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printf '\n安装完成（v%s）\n' "$installed_version"
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printf ' 服务：%s（%s）\n' "$SERVICE_NAME" "$init_system"
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if [ "$init_system" = systemd ]; then
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printf ' 查看状态：systemctl status %s\n' "$SERVICE_NAME"
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printf ' 查看日志：journalctl -u %s -f\n' "$SERVICE_NAME"
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else
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printf ' 查看状态：rc-service %s status\n' "$SERVICE_NAME"
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fi
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}
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cleanup_agent_install() {
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if [ "$rollback_agent" = true ]; then
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rollback_agent=false
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log "安装未完成，正在恢复上一版本"
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stop_agent || { printf '错误：旧服务未停止，回滚备份已保留在 %s\n' "$STATE_DIR" >&2; return 1; }
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if [ "$had_agent" = true ]; then
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cp -p "$backup_agent" "$AGENT_FILE" || return 1
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else
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rm -f "$AGENT_FILE" || return 1
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fi
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service_path=$SERVICE_FILE
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[ "$init_system" != openrc ] || service_path=$OPENRC_FILE
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if [ "$had_service" = true ]; then
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cp -p "$backup_service" "$service_path" || return 1
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else
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rm -f "$service_path" || return 1
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fi
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case "$init_system" in
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systemd)
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systemctl daemon-reload || return 1
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[ "$had_service" != true ] || systemctl restart "$SERVICE_NAME" || return 1
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;;
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openrc) [ "$had_service" != true ] || rc-service "$SERVICE_NAME" restart || return 1 ;;
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esac
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fi
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[ -z "$temporary" ] || rm -f "$temporary"
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[ -z "$backup_agent" ] || rm -f "$backup_agent"
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[ -z "$backup_service" ] || rm -f "$backup_service"
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}
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detect_glibc_version() {
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[ -x "$glibc_loader" ] || return
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LC_ALL=C "$glibc_loader" --version 2>/dev/null | awk '
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tolower($0) ~ /glibc|gnu libc|gnu c library/ {
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sub(/\.$/, "")
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if (match($0, /[0-9]+\.[0-9]+(\.[0-9]+)?$/)) {
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print substr($0, RSTART, RLENGTH)
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exit
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}
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}
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'
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}
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glibc_is_supported() {
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glibc_major=${1%%.*}
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glibc_minor=${1#*.}
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glibc_minor=${glibc_minor%%.*}
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case "$glibc_major:$glibc_minor" in
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*[!0-9:]*|:*) return 1 ;;
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esac
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[ "$glibc_major" -gt 2 ] \
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|| { [ "$glibc_major" -eq 2 ] && [ "$glibc_minor" -ge 28 ]; }
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}
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safe_value() {
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case "$1" in *[!A-Za-z0-9_./:@-]*|'') return 1 ;; esac
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}
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detect_init_system() {
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if [ -f /etc/alpine-release ] && command -v rc-service >/dev/null 2>&1; then
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printf 'openrc'
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elif [ -d /run/systemd/system ] && command -v systemctl >/dev/null 2>&1; then
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printf 'systemd'
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elif command -v rc-service >/dev/null 2>&1 && [ -d /etc/init.d ]; then
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printf 'openrc'
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else
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printf 'unknown'
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fi
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}
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ensure_not_agent_service() {
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[ "$init_system" = systemd ] || return 0
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[ -r "/proc/$$/cgroup" ] || fail "无法检查当前进程所属服务，已停止安装"
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while IFS=: read -r cgroup_id cgroup_controllers cgroup_path; do
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case "$cgroup_path/" in
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*/"$SERVICE_NAME.service"/*)
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fail "不能在当前 Agent 的远程执行中重装、更新或卸载自身，请通过 SSH 执行；服务未停止"
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;;
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esac
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done < "/proc/$$/cgroup"
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}
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stop_agent() {
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case "$init_system" in
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systemd)
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[ -f "$SERVICE_FILE" ] || return 0
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systemctl stop "$SERVICE_NAME" || return 1
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stopped_pid=$(systemctl show -p MainPID --value "$SERVICE_NAME") || return 1
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[ "$stopped_pid" = 0 ]
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;;
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openrc)
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[ -f "$OPENRC_FILE" ] || return 0
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rc-service "$SERVICE_NAME" stop || return 1
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! rc-service "$SERVICE_NAME" status >/dev/null 2>&1
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;;
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esac
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}
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verify_agent_started() {
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started_pid=$(systemctl show -p MainPID --value "$SERVICE_NAME") || return 1
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case "$started_pid" in ''|*[!0-9]*|0) return 1 ;; esac
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attempt=1
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while [ "$attempt" -le 10 ]; do
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sleep 1
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systemctl is-active --quiet "$SERVICE_NAME" || return 1
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current_pid=$(systemctl show -p MainPID --value "$SERVICE_NAME") || return 1
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[ "$current_pid" = "$started_pid" ] || return 1
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attempt=$((attempt + 1))
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done
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}
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ensure_curl() {
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command -v curl >/dev/null 2>&1 && return
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log "未找到 curl，正在通过系统包管理器安装"
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if command -v apt-get >/dev/null 2>&1; then
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apt-get update
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DEBIAN_FRONTEND=noninteractive apt-get install -y curl
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elif command -v dnf >/dev/null 2>&1; then
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dnf install -y curl
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elif command -v yum >/dev/null 2>&1; then
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yum install -y curl
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elif command -v apk >/dev/null 2>&1; then
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apk add --no-cache curl
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else
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fail "缺少 curl，且未找到受支持的包管理器"
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fi
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command -v curl >/dev/null 2>&1 || fail "curl 安装失败"
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}
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explain_exec_failure() {
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target="$1"
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if [ ! -f "$target" ]; then
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echo "下载文件在校验前丢失：$target" >&2
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elif [ ! -x "$target" ]; then
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echo "下载文件不可执行：$target" >&2
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elif [ "$(dd if="$target" bs=4 count=1 2>/dev/null)" != "$(printf '\177ELF')" ]; then
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echo "下载文件不是有效的 Linux ELF 可执行文件" >&2
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else
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echo "下载的 Agent 无法在当前系统运行，请确认系统架构与 Release 文件匹配" >&2
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fi
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}
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install_agent() {
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[ "$(id -u)" -eq 0 ] || fail "请使用 root 权限运行安装命令"
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log "正在检查运行环境"
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ensure_curl
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command -v sha256sum >/dev/null || fail "缺少 sha256sum，无法校验下载文件"
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token=""
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endpoint=""
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interval=60
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interval_set=false
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mirror=""
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while [ "$#" -gt 0 ]; do
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option="$1"
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case "$option" in
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-t|-e|-i|-m)
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[ "$#" -ge 2 ] || { echo "参数 $option 缺少值" >&2; usage; exit 1; }
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value="$2"
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shift 2
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;;
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*) echo "未知参数：$option" >&2; usage; exit 1 ;;
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esac
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case "$option" in
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-t) [ -z "$token" ] || fail "参数 $option 重复"; token="$value" ;;
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-e) [ -z "$endpoint" ] || fail "参数 $option 重复"; endpoint="$value" ;;
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-i) [ "$interval_set" = false ] || fail "参数 $option 重复"; interval="$value"; interval_set=true ;;
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-m) [ -z "$mirror" ] || fail "参数 $option 重复"; mirror="$value" ;;
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esac
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done
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[ -n "$token" ] && [ -n "$endpoint" ] || { usage; exit 1; }
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endpoint=${endpoint%/}
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[ ${#token} -le 512 ] && [ ${#endpoint} -le 2048 ] || fail "安装参数长度超出限制"
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if ! safe_value "$token" || ! safe_value "$endpoint"; then
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fail "服务地址或 Agent Token 格式无效"
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fi
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case "$endpoint" in
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https://?*|http://localhost|http://localhost/*|http://localhost:*|http://127.0.0.1|http://127.0.0.1/*|http://127.0.0.1:*) ;;
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*) fail "服务地址必须使用 HTTPS；仅本机调试可使用 HTTP" ;;
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esac
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case "$endpoint" in *@*) fail "服务地址不能包含用户信息" ;; esac
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case "$interval" in ''|*[!0-9]*) fail "历史保存间隔必须是整数" ;; esac
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[ "$interval" -ge 15 ] && [ "$interval" -le 3600 ] || fail "历史保存间隔必须在 15-3600 秒之间"
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mirror=${mirror%/}
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if [ -n "$mirror" ]; then
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[ ${#mirror} -le 2048 ] || fail "下载加速前缀长度超出限制"
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safe_value "$mirror" || fail "下载加速前缀格式无效"
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case "$mirror" in
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https://?*) ;;
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http://localhost|http://localhost/*|http://localhost:*|http://127.0.0.1|http://127.0.0.1/*|http://127.0.0.1:*) ;;
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*) fail "下载加速前缀必须使用 HTTPS；仅本机调试可使用 HTTP" ;;
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esac
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case "$mirror" in *@*) fail "下载加速前缀不能包含用户信息" ;; esac
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fi
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case "$(uname -m)" in
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x86_64|amd64) arch="x64"; glibc_loader=/lib64/ld-linux-x86-64.so.2 ;;
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aarch64|arm64) arch="aarch64"; glibc_loader=/lib/ld-linux-aarch64.so.1 ;;
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*) fail "暂不支持当前 CPU 架构：$(uname -m)" ;;
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esac
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libc=musl
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glibc_version=$(detect_glibc_version || true)
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if [ -n "$glibc_version" ] && glibc_is_supported "$glibc_version"; then
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libc=glibc
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fi
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init_system=$(detect_init_system)
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[ "$init_system" != "unknown" ] || fail "未检测到正在运行的 systemd 或 OpenRC"
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ensure_not_agent_service
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mkdir -p "$INSTALL_DIR" "$STATE_ROOT" "$STATE_DIR"
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chmod 755 "$INSTALL_DIR"
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chmod 700 "$STATE_ROOT"
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chmod 750 "$STATE_DIR"
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temporary="$INSTALL_DIR/.agent.$$.download"
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trap cleanup_agent_install EXIT
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trap 'exit 129' HUP
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trap 'exit 130' INT
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trap 'exit 143' TERM
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artifact="agent-linux-$arch-$libc"
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release_api="https://api.github.com/repos/elysia62/NodeFlare/releases/latest"
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log "正在获取 GitHub 最新正式版本（$artifact）"
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release_json=$(curl --fail --location --silent --show-error --max-time 30 \
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-H 'Accept: application/vnd.github+json' \
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-H 'User-Agent: nodeflare-installer' \
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"$release_api")
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release_tag=$(printf '%s\n' "$release_json" | tr ',' '\n' | sed -n 's/.*"tag_name"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | head -n 1)
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printf '%s\n' "$release_tag" | grep -Eq '^v[0-9]+\.[0-9]+\.[0-9]+$' || {
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fail "GitHub 最新 Release 标签无效：${release_tag:-未找到}"
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}
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expected=$(printf '%s\n' "$release_json" | tr '{' '\n' | awk -v name="$artifact" '
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{
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compact = $0
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gsub(/[[:space:]]/, "", compact)
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if (index(compact, "\"name\":\"" name "\"") > 0) selected = 1
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else if (index(compact, "\"name\":") > 0) selected = 0
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}
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selected {
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marker = "\"digest\":\"sha256:"
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position = index(compact, marker)
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if (position == 0) next
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digest = substr(compact, position + length(marker), 64)
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if (length(digest) == 64 && digest !~ /[^0-9a-fA-F]/) {
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print tolower(digest)
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exit
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}
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}
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')
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[ -n "$expected" ] || fail "Release 缺少 $artifact 的 SHA-256 摘要"
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release_base="https://github.com/elysia62/NodeFlare/releases/download/$release_tag"
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download_url="$release_base/$artifact"
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if [ -n "$mirror" ]; then
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download_url="$mirror/$release_base/$artifact"
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log "正在通过下载加速前缀拉取 Agent $release_tag"
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else
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log "正在下载 Agent $release_tag"
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fi
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curl --fail --location --silent --show-error --max-time 120 \
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"$download_url" \
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-o "$temporary"
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actual=$(sha256sum "$temporary" | awk '{ print $1 }')
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[ -n "$expected" ] && [ "$actual" = "$expected" ] || fail "Agent SHA-256 校验失败，已停止安装"
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log "下载校验通过，正在验证可执行文件"
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chmod 755 "$temporary"
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if ! installed_version=$("$temporary" --version); then
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explain_exec_failure "$temporary"
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exit 1
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fi
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installed_version=${installed_version##* }
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printf '%s\n' "$installed_version" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$' || {
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fail "Agent 返回了无效版本号：$installed_version"
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}
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[ "$installed_version" = "${release_tag#v}" ] || {
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fail "Release $release_tag 与 Agent 版本 $installed_version 不一致"
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}
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backup_agent="$STATE_DIR/.agent.$$.previous"
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service_path=$SERVICE_FILE
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[ "$init_system" != openrc ] || service_path=$OPENRC_FILE
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backup_service="$STATE_DIR/.service.$$.previous"
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if [ -f "$AGENT_FILE" ]; then
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cp -p "$AGENT_FILE" "$backup_agent"
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had_agent=true
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fi
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if [ -f "$service_path" ]; then
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cp -p "$service_path" "$backup_service"
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had_service=true
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fi
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stop_agent || fail "无法停止已有 Agent 服务，未替换程序"
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rollback_agent=true
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mv "$temporary" "$AGENT_FILE"
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log "正在启动 $init_system 服务"
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if [ "$init_system" = "systemd" ]; then
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printf '%s\n' \
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'[Unit]' \
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'Description=NodeFlare Agent' \
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'After=network-online.target' \
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'Wants=network-online.target' \
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'' \
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'[Service]' \
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'Type=simple' \
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"ExecStart=$AGENT_FILE -e $endpoint -i $interval" \
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'Restart=always' \
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'RestartSec=10' \
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'NoNewPrivileges=true' \
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"Environment=NODEFLARE_AGENT_TOKEN=$token" \
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"Environment=NODEFLARE_STATE_DIR=$STATE_DIR" \
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'' \
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'[Install]' \
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'WantedBy=multi-user.target' > "$SERVICE_FILE"
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chmod 600 "$SERVICE_FILE"
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systemctl daemon-reload
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systemctl enable --now --quiet "$SERVICE_NAME"
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verify_agent_started || {
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systemctl status "$SERVICE_NAME" --no-pager >&2 || true
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fail "服务启动失败，请查看上方状态信息"
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}
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elif [ "$init_system" = "openrc" ]; then
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printf '%s\n' \
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'#!/sbin/openrc-run' \
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"name=\"$SERVICE_NAME\"" \
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"command=\"$AGENT_FILE\"" \
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"command_args=\"-e $endpoint -i $interval\"" \
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"command_user=\"root\"" \
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"export NODEFLARE_AGENT_TOKEN=\"$token\"" \
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"export NODEFLARE_STATE_DIR=\"$STATE_DIR\"" \
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"supervisor=\"supervise-daemon\"" \
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"respawn_delay=10" \
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'depend() { need net; }' > "$OPENRC_FILE"
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chmod 700 "$OPENRC_FILE"
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rc-update add "$SERVICE_NAME" default
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rc-service "$SERVICE_NAME" restart
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rc-service "$SERVICE_NAME" status >/dev/null || {
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rc-service "$SERVICE_NAME" status >&2 || true
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fail "服务启动失败，请查看上方状态信息"
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}
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fi
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rollback_agent=false
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cleanup_agent_install
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trap - EXIT HUP INT TERM
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print_install_result
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}
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load_installed_agent_config() {
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case "$init_system" in
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systemd)
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[ -f "$SERVICE_FILE" ] || fail "未找到 Agent 服务配置，请先完成安装"
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service_exec=$(sed -n 's/^ExecStart=//p' "$SERVICE_FILE" | head -n 1)
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endpoint=$(printf '%s\n' "$service_exec" | sed -n 's/.* -e \([^[:space:]]*\) -i \([0-9][0-9]*\)$/\1/p')
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interval=$(printf '%s\n' "$service_exec" | sed -n 's/.* -e \([^[:space:]]*\) -i \([0-9][0-9]*\)$/\2/p')
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token=$(sed -n 's/^Environment=NODEFLARE_AGENT_TOKEN=//p' "$SERVICE_FILE" | head -n 1)
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;;
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openrc)
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[ -f "$OPENRC_FILE" ] || fail "未找到 Agent 服务配置，请先完成安装"
|
||
command_args=$(sed -n 's/^command_args="\([^"]*\)"$/\1/p' "$OPENRC_FILE" | head -n 1)
|
||
endpoint=$(printf '%s\n' "$command_args" | sed -n 's/^-e \([^[:space:]]*\) -i \([0-9][0-9]*\)$/\1/p')
|
||
interval=$(printf '%s\n' "$command_args" | sed -n 's/^-e \([^[:space:]]*\) -i \([0-9][0-9]*\)$/\2/p')
|
||
token=$(sed -n 's/^export NODEFLARE_AGENT_TOKEN="\([^"]*\)"$/\1/p' "$OPENRC_FILE" | head -n 1)
|
||
;;
|
||
*)
|
||
fail "未检测到正在运行的 systemd 或 OpenRC，无法自动读取 Agent 配置"
|
||
;;
|
||
esac
|
||
[ -n "${endpoint:-}" ] && [ -n "${token:-}" ] && [ -n "${interval:-}" ] || {
|
||
fail "无法读取现有 Agent 配置，请改用安装参数 -e 和 -t"
|
||
}
|
||
}
|
||
|
||
update_agent() {
|
||
[ "$(id -u)" -eq 0 ] || fail "请使用 root 权限执行更新"
|
||
update=true
|
||
mirror=""
|
||
while [ "$#" -gt 0 ]; do
|
||
option="$1"
|
||
case "$option" in
|
||
-m)
|
||
[ "$#" -ge 2 ] || fail "参数 -m 缺少值"
|
||
[ -z "$mirror" ] || fail "参数 -m 重复"
|
||
mirror="$2"
|
||
shift 2
|
||
;;
|
||
*)
|
||
echo "未知参数：$option" >&2
|
||
usage
|
||
exit 1
|
||
;;
|
||
esac
|
||
done
|
||
init_system=$(detect_init_system)
|
||
load_installed_agent_config
|
||
if [ -n "$mirror" ]; then
|
||
install_agent -e "$endpoint" -t "$token" -i "$interval" -m "$mirror"
|
||
else
|
||
install_agent -e "$endpoint" -t "$token" -i "$interval"
|
||
fi
|
||
}
|
||
|
||
status_agent() {
|
||
init_system=$(detect_init_system)
|
||
if [ "$init_system" = "systemd" ]; then
|
||
if systemctl status "$SERVICE_NAME" --no-pager; then return 0; else return $?; fi
|
||
fi
|
||
if [ "$init_system" = "openrc" ]; then
|
||
rc-service "$SERVICE_NAME" status
|
||
return $?
|
||
fi
|
||
echo "未检测到 Agent 服务" >&2
|
||
return 1
|
||
}
|
||
|
||
uninstall_agent() {
|
||
[ "$(id -u)" -eq 0 ] || fail "请使用 root 权限执行卸载"
|
||
log "正在停止并移除 Agent 服务"
|
||
init_system=$(detect_init_system)
|
||
ensure_not_agent_service
|
||
stop_agent || fail "无法停止已有 Agent 服务，已取消卸载"
|
||
case "$init_system" in
|
||
systemd) systemctl disable --now "$SERVICE_NAME" 2>/dev/null || true ;;
|
||
openrc)
|
||
rc-service "$SERVICE_NAME" stop 2>/dev/null || true
|
||
rc-update del "$SERVICE_NAME" default 2>/dev/null || true
|
||
;;
|
||
esac
|
||
rm -f "$SERVICE_FILE"
|
||
rm -f "$OPENRC_FILE"
|
||
[ "$init_system" != "systemd" ] || systemctl daemon-reload 2>/dev/null || true
|
||
rm -f "$AGENT_FILE"
|
||
rm -rf "$STATE_DIR"
|
||
rmdir "$STATE_ROOT" 2>/dev/null || true
|
||
rmdir "$INSTALL_DIR" 2>/dev/null || true
|
||
echo "Agent 已卸载"
|
||
}
|
||
|
||
case "${1:-}" in
|
||
--update) shift; update_agent "$@" ;;
|
||
--uninstall) [ "$#" -eq 1 ] || { usage; exit 1; }; uninstall_agent ;;
|
||
--status) [ "$#" -eq 1 ] || { usage; exit 1; }; status_agent ;;
|
||
-h|--help|'') usage; exit 0 ;;
|
||
*) install_agent "$@" ;;
|
||
esac
|