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https://github.com/mofeng-git/One-KVM.git
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122 lines
3.7 KiB
Bash
122 lines
3.7 KiB
Bash
#!/bin/bash
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# 为玩客云/玩客云Pro 平台生成 MAC 地址的一次性脚本
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# 此脚本在首次开机时执行，为 eth0 网卡生成并应用基于 SN 的 MAC 地址，失败时回退到随机 MAC
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set -e
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NETWORK_CONFIG="/etc/systemd/network/99-eth0.network"
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LOCK_FILE="/var/lib/kvmd/.mac-generated"
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PLATFORM_FILE="/usr/share/kvmd/platform"
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EFUSE_SYSFS_PATH=""
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SN_PREFIX=""
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SN_EXPECTED_LENGTH=13
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# 按平台设置 EFUSE 与 SN 参数；未知平台时按 efuse 路径探测
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detect_platform_params() {
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local platform=""
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if [ -f "$PLATFORM_FILE" ]; then
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platform=$(tr -d '\n' < "$PLATFORM_FILE")
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fi
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case "$platform" in
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onecloud)
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EFUSE_SYSFS_PATH="/sys/bus/nvmem/devices/meson8b-efuse0/nvmem"
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SN_PREFIX="OCP"
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;;
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onecloud-pro)
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EFUSE_SYSFS_PATH="/sys/devices/platform/efuse/efuse0/nvmem"
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SN_PREFIX="ODC"
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;;
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esac
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if [ -z "$EFUSE_SYSFS_PATH" ] || [ -z "$SN_PREFIX" ]; then
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if [ -e "/sys/devices/platform/efuse/efuse0/nvmem" ]; then
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EFUSE_SYSFS_PATH="/sys/devices/platform/efuse/efuse0/nvmem"
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SN_PREFIX="ODC"
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elif [ -e "/sys/bus/nvmem/devices/meson8b-efuse0/nvmem" ]; then
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EFUSE_SYSFS_PATH="/sys/bus/nvmem/devices/meson8b-efuse0/nvmem"
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SN_PREFIX="OCP"
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fi
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fi
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}
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# 检查是否已经执行过
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if [ -f "$LOCK_FILE" ]; then
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echo "MAC地址已经生成过，跳过执行"
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exit 0
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fi
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# 生成MAC地址函数
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generate_random_mac() {
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detect_platform_params
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# 尝试根据 SN 生成唯一 MAC 地址
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if [ -f "$EFUSE_SYSFS_PATH" ]; then
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sn_offset=$(grep --binary-files=text -boP "$SN_PREFIX" "$EFUSE_SYSFS_PATH" | head -n1 | cut -d: -f1)
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if [ -n "$sn_offset" ]; then
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sn=$(cat "$EFUSE_SYSFS_PATH" | dd bs=1 skip="$sn_offset" count="$SN_EXPECTED_LENGTH" 2>/dev/null)
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if [ ${#sn} -eq $SN_EXPECTED_LENGTH ]; then
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echo "S/N: $sn" >&2 # 输出到 stderr，避免干扰返回值
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# 使用 SN 的 SHA-256 哈希生成后 5 字节（避免多余管道）
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sn_hash=$(printf %s "$sn" | sha256sum | cut -d' ' -f1)
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# 直接用 Bash 子串获取哈希末 10 个字符并插入分隔符
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mac_hex=${sn_hash: -10}
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mac_suffix=$(printf "%s:%s:%s:%s:%s" "${mac_hex:0:2}" "${mac_hex:2:2}" "${mac_hex:4:2}" "${mac_hex:6:2}" "${mac_hex:8:2}")
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printf "02:%s\n" "$mac_suffix"
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return 0
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fi
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fi
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fi
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# 若 SN 获取失败，回退到随机逻辑
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echo "警告: 无法获取 SN，回退到随机 MAC 生成" >&2
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printf "02:%02x:%02x:%02x:%02x:%02x\n" \
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$((RANDOM % 256)) \
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$((RANDOM % 256)) \
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$((RANDOM % 256)) \
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$((RANDOM % 256)) \
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$((RANDOM % 256))
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}
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echo "正在生成基于 SN 的 MAC 地址..."
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# 生成新的MAC地址
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NEW_MAC=$(generate_random_mac)
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echo "生成的MAC地址: $NEW_MAC"
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# 验证 MAC 地址格式
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if ! [[ $NEW_MAC =~ ^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$ ]]; then
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echo "错误: 生成的 MAC 地址格式无效: $NEW_MAC"
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exit 1
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fi
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# 备份原配置文件
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if [ -f "$NETWORK_CONFIG" ]; then
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cp "$NETWORK_CONFIG" "${NETWORK_CONFIG}.backup"
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fi
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# 更新网络配置文件
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cat > "$NETWORK_CONFIG" << EOF
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[Match]
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Name=eth0
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[Network]
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DHCP=yes
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[Link]
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MACAddress=$NEW_MAC
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EOF
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echo "已更新网络配置文件: $NETWORK_CONFIG"
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# 创建锁定文件，防止重复执行
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mkdir -p "$(dirname "$LOCK_FILE")"
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echo "MAC地址生成时间: $(date)" > "$LOCK_FILE"
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# 禁用此服务，确保只运行一次
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systemctl disable kvmd-generate-mac.service
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echo "MAC地址生成完成: $NEW_MAC"
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echo "服务已自动禁用，下次开机不会再执行"
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exit 0 |