117 lines
5.6 KiB
Bash
117 lines
5.6 KiB
Bash
#!/usr/bin/env bash
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set -eu
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if [ "$(id -u)" -ne 0 ]; then
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echo "必须使用 root 用户安装 Smail" >&2
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exit 1
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fi
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root_dir="$(realpath -e -- "${1:-$(dirname "$0")/..}")"
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runtime_dir=/opt/smail
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case "$(uname -m)" in
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x86_64) arch=amd64 ;;
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aarch64|arm64) arch=arm64 ;;
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*) echo "不支持的系统架构" >&2; exit 1 ;;
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esac
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# 安装前先检查所有输入和运行状态，不能覆盖仍在运行的程序。
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for file in "$root_dir/out/backend/smail_linux_$arch" "$root_dir/out/backend/smail-admin_linux_$arch" \
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"$root_dir/deploy/systemd/smail.service" "$root_dir/deploy/systemd/smail-admin.service"; do
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if [ ! -f "$file" ] || [ -L "$file" ] || [ ! -s "$file" ]; then
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echo "安装输入不存在或不是普通文件：$file" >&2
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exit 1
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fi
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done
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if systemctl is-active --quiet smail.service || systemctl is-active --quiet smail-admin.service; then
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echo "请先停止 Smail 主服务和管理员重置服务，安装不会自动中断现有业务。" >&2
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exit 1
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fi
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for process in /proc/[0-9]*/exe; do
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executable="$(readlink "$process" 2>/dev/null || true)"
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case "$executable" in
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"$runtime_dir/smail"|"$runtime_dir/smail (deleted)"|"$runtime_dir/smail-admin"|"$runtime_dir/smail-admin (deleted)")
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echo "部署目录中的程序仍在运行，请确认并停止后再安装。" >&2
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exit 1 ;;
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esac
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done
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if [ -L /opt ] || [ -L "$runtime_dir" ] || { [ -e "$runtime_dir" ] && [ ! -d "$runtime_dir" ]; }; then
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echo "部署路径不能是链接或普通文件。" >&2
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exit 1
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fi
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for directory in config data ssl log plugins; do
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target="$runtime_dir/$directory"
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if [ -L "$target" ] || { [ -e "$target" ] && [ ! -d "$target" ]; }; then
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echo "运行目录不能是链接或普通文件：$target" >&2
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exit 1
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fi
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done
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for target in "$runtime_dir/smail" "$runtime_dir/smail-admin" \
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/etc/systemd/system/smail.service /etc/systemd/system/smail-admin.service \
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/etc/smail/smail.env; do
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if [ -L "$target" ] || { [ -e "$target" ] && [ ! -f "$target" ]; }; then
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echo "程序或服务文件不能是链接或特殊文件：$target" >&2
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exit 1
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fi
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done
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if [ -L /etc/smail ] || { [ -e /etc/smail ] && [ ! -d /etc/smail ]; }; then
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echo "服务环境目录不能是链接或普通文件：/etc/smail" >&2
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exit 1
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fi
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if [ -L /run/smail ] || { [ -e /run/smail ] && [ ! -d /run/smail ]; }; then
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echo "本机控制目录不能是链接或普通文件。" >&2
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exit 1
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fi
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if [ -L /run/smail/admin-control.sock ] || { [ -e /run/smail/admin-control.sock ] && [ ! -S /run/smail/admin-control.sock ]; }; then
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echo "本机控制路径不是安全套接字。" >&2
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exit 1
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fi
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# 安装备份存放在系统备份目录，不在部署根目录遗留 .bak 文件。
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backup_dir="$(mktemp -d /var/backups/smail-deploy-XXXXXXXX)"
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for name in smail smail-admin; do
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if [ -f "$runtime_dir/$name" ]; then cp -p -- "$runtime_dir/$name" "$backup_dir/$name"; fi
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done
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for name in smail.service smail-admin.service; do
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if [ -f "/etc/systemd/system/$name" ]; then cp -p -- "/etc/systemd/system/$name" "$backup_dir/$name"; fi
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done
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if [ -f /etc/smail/smail.env ]; then cp -p -- /etc/smail/smail.env "$backup_dir/smail.env"; fi
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if ! getent group smail >/dev/null; then groupadd --system smail; fi
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if ! getent passwd smail >/dev/null; then useradd --system --gid smail --home-dir "$runtime_dir" --shell /usr/sbin/nologin smail; fi
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install -d -o root -g root -m 0755 "$runtime_dir"
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install -d -o root -g root -m 0750 /etc/smail
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if [ ! -e /etc/smail/smail.env ]; then
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# 只为新部署设置回收预算；已存在的文件始终保留部署人员的自定义环境配置。
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umask 0077
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printf '%s\n' 'SMAIL_ROOT=/opt/smail' 'GOMEMLIMIT=256MiB' > /etc/smail/smail.env
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fi
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chown root:root /etc/smail/smail.env
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chmod 0600 /etc/smail/smail.env
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for directory in config data ssl log plugins; do
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target="$runtime_dir/$directory"
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# 内置插件在临时沙箱中展开，只兼容已存在的历史插件目录。
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if [ "$directory" = plugins ] && [ ! -d "$target" ]; then continue; fi
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install -d -o smail -g smail -m 0700 "$target"
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# 不跟随链接，也不越过挂载点；仅为本部署的存量运行数据调整属主。
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find -P "$target" -xdev \( -type d -o -type f \) -exec chown --no-dereference smail:smail {} +
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done
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install -d -o smail -g smail -m 0750 /run/smail
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if [ -S /run/smail/admin-control.sock ]; then
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# 从旧版 root 主服务迁移时保留残留套接字，由主程序验证失活后自行处理。
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chown --no-dereference smail:smail /run/smail/admin-control.sock
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fi
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install -d -o root -g root -m 0755 /run/systemd/ask-password
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install -o root -g root -m 0755 "$root_dir/out/backend/smail_linux_$arch" "$runtime_dir/smail"
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install -o root -g root -m 0700 "$root_dir/out/backend/smail-admin_linux_$arch" "$runtime_dir/smail-admin"
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install -o root -g root -m 0644 "$root_dir/deploy/systemd/smail.service" /etc/systemd/system/smail.service
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install -o root -g root -m 0644 "$root_dir/deploy/systemd/smail-admin.service" /etc/systemd/system/smail-admin.service
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systemctl daemon-reload
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systemctl enable smail
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# 清理旧版本可能留下的开机启动关系。smail-admin 单元没有 [Install]，不能再次 enable。
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systemctl disable smail-admin >/dev/null 2>&1 || true
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echo "Smail 已安装到 $runtime_dir，旧程序和服务文件备份在 $backup_dir。"
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echo "配置、数据库和证书未覆盖；请使用 systemctl start smail 启动并检查运行状态。"
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echo "smail-admin 仅允许按需执行 start/stop，不支持开机自启动。"
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echo "主服务默认内存高水位 384 MiB、硬上限 512 MiB；不是容量承诺，请先核对同机资源预算。"
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echo "旧环境文件不会自动补写 GOMEMLIMIT；启动后请按《生产资源部署说明》执行只读资源预检。"
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