如何使用 npm dbus-network-manager 更改以太网接口的 IP 地址？

Posted 2023-04-14

【中文标题】如何使用 npm dbus-network-manager 更改以太网接口的 IP 地址？

【英文标题】：how can npm dbus-network-manager be used to change the IP address of an ethernet interface?

【发布时间】：2019-03-22 18:40:29

【问题描述】：

我需要使用 DBus 更改网络接口的 v4 IP 地址，和/或将其设置为使用基于 nodejs 的服务的 DHCP。

我已经花了一个多下午的时间尝试使用dbus-network-manager 来达到这个目的。我想我已经接近了，但还没有雪茄。

这是我的客户端代码，尽管它很长，但它几乎是最小的，抱歉。

// convenience logging method.
function pretty(obj) return JSON.stringify(obj,null,2);
// connect to NetworkManager via DBus
const NetWorkManager = require('dbus-network-manager').connect()
.then(nm => 
    // Get a device inventory.
    nm.GetDevices()
    .then (devices => 
        // filter out the Ethernet device to try to change its address
        devices.forEach(dev => 
            console.log (dev.objectPath);
            dev.getProperties()
            .then(props => 
                // this is where we filter out non-Ethernet interfaces.
                if (props.DeviceType == nm.fromEnum(nm.enums.DeviceType, 'Ethernet')) 
                        // get the ActiveConnection so we can get at the interface config
                    nm.ActiveConnection.connect(props.ActiveConnection)
                    .then(ac => 
                        //console.log(ac);
                        return ac.getProperties();
                    )
                    .then (acProps => 
                        //console.log ('ActiveConnection: ' + pretty(acProps));
                        // get our connection which should let us change the interface settings.
                        return nm.Connection.connect(acProps.Connection);
                    )
                    .then (conn => 
                        // get the settings, so we can use the object 
                        // as a template to adjust & send back to NM.
                        conn.GetSettings()
                        .then (settings => 
                            // log the settings we read, overwrite what seems sensible
                            console.log('original: ' + pretty(settings.ipv4));
                            settings.ipv4['address-data'] = [
                                
                                    "address": "192.168.1.200",
                                    "prefix": 24
                                
                            ];
                            // 192.168.1.200, 24, 192.168.1.254 in network order.
                            settings.ipv4.addresses = [3355551936,24,4261521600];
                            settings.ipv4.method = 'static';

                            // this should do the trick (but it doesn't), 2 = write to memory
                            conn.Update2(settings,2);
                            console.log ('updated: ' + pretty(settings.ipv4));

                            // these event handlers are never triggered
                            conn.on('Updated', () => 
                                console.log ('settings were updated');
                            );
                            conn.on('PropertiesChanged', res => 
                                console.log ('Properties changed: ', pretty(res));
                            );
                        );
                    );
                 else 
                    console.log ('skipping: ' + props.Interface + 
                        ', which is of type: ' + nm.toEnum(nm.enums.DeviceType, props.DeviceType)
                    )
                
            );
        );
    );
)
.catch (err => 
    console.log ('Problem: ' + err);
)

这是它记录的内容...

skipping: lo, which is of type: Generic
skipping: docker0, which is of type: Bridge
original: 
  "method": "auto",
  "dns": [],
  "dns-search": [],
  "addresses": [],
  "routes": [],
  "address-data": [],
  "route-data": []

updated: 
  "method": "static",
  "dns": [],
  "dns-search": [],
  "addresses": [
    3355551936,
    24,
    4261521600
  ],
  "routes": [],
  "address-data": [
    
      "address": "192.168.1.200",
      "prefix": 24
    
  ],
  "route-data": []

NetworkManager 是 1.10.6-2ubuntu 版本

Ubuntu 是 18.04.1 LTS 版本

Nodejs 是 8.9.1 版本

DBus 是 1.12.2-1ubuntu1 版本

提前致谢！

【问题讨论】：

我当然应该提到代码无法更改接口的 IP 地址（来自 192.168.1.103），并且我检查了 ...200 地址是否可用。

【参考方案1】：

我没有使用 NPM dbus 管理器，但遇到了类似的问题。

更新设置对象后，我还必须Reapply 设备，这样它才能读取这些更改。我还可以使用命令nmcli connection up id eth0 重新加载界面设置。

例子：

conn.Update2(new_settings,2);
dev.Reapply(,0,0)