67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package executor
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import (
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"context"
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"fmt"
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"net"
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"strings"
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)
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// runNetIface implements `kopsc net iface`: show network interfaces with IPv4 addresses.
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func runNetIface(ctx context.Context, req BuiltinRequest) error {
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ifaces, err := net.Interfaces()
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if err != nil {
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return fmt.Errorf("获取网卡列表失败: %w", err)
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}
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for _, iface := range ifaces {
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// Skip loopback
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if iface.Flags&net.FlagLoopback != 0 {
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continue
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}
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// Get IP addresses
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addrs, err := iface.Addrs()
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if err != nil {
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continue
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}
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// Filter IPv4 addresses only
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var ipv4Addrs []string
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for _, addr := range addrs {
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addrStr := addr.String()
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// IPv4 addresses contain '.' but not ':'
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if strings.Contains(addrStr, ".") && !strings.Contains(addrStr, ":") {
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ipv4Addrs = append(ipv4Addrs, addrStr)
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}
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}
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// Skip if no IPv4 address
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if len(ipv4Addrs) == 0 {
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continue
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}
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// Status
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status := "DOWN"
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if iface.Flags&net.FlagUp != 0 {
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status = "UP"
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}
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fmt.Fprintf(req.Stdout, "%s: <%s> mtu %d\n", iface.Name, status, iface.MTU)
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// MAC address
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if len(iface.HardwareAddr) > 0 {
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fmt.Fprintf(req.Stdout, " MAC: %s\n", iface.HardwareAddr.String())
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}
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// IPv4 addresses only
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for _, addr := range ipv4Addrs {
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fmt.Fprintf(req.Stdout, " IPv4: %s\n", addr)
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}
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fmt.Fprintln(req.Stdout)
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}
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return nil
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}
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