Initial commit: 网络拓扑发现系统

- 支持Cisco、华为、H3C、ASA、Linux、Windows设备
- SSH远程采集设备信息
- 自动发现网络拓扑(LLDP/CDP)
- Web可视化界面
- 支持旧版SSH加密算法兼容

internal/device/linux.go

@@ -0,0 +1,107 @@
+package device
+
+import (
+	"fmt"
+	"network-topology-discovery/pkg/models"
+	"regexp"
+	"strings"
+)
+
+// LinuxParser Linux服务器解析器
+type LinuxParser struct {
+	BaseParser
+}
+
+// GetCommands 获取Linux命令列表
+func (p *LinuxParser) GetCommands() []string {
+	return []string{
+		"hostname",
+		"uname -a",
+		"ip addr show",
+		"ip link show",
+		"uptime",
+	}
+}
+
+// Parse 解析Linux输出
+func (p *LinuxParser) Parse(device *models.Device, outputs []string) error {
+	if len(outputs) < 5 {
+		return fmt.Errorf("insufficient command outputs")
+	}
+
+	device.Hostname = strings.TrimSpace(outputs[0])
+	device.OSVersion = p.parseOSVersion(outputs[1])
+	device.Uptime = strings.TrimSpace(outputs[4])
+	device.Interfaces = p.parseInterfaces(outputs[2], outputs[3])
+
+	return nil
+}
+
+func (p *LinuxParser) parseOSVersion(output string) string {
+	// 从uname提取内核版本
+	parts := strings.Fields(output)
+	if len(parts) >= 3 {
+		return fmt.Sprintf("Linux %s", parts[2])
+	}
+	return output
+}
+
+func (p *LinuxParser) parseInterfaces(addrOutput, linkOutput string) []models.Interface {
+	var interfaces []models.Interface
+
+	// 解析ip addr show输出
+	interfaceMap := make(map[string]*models.Interface)
+	var currentInterface *models.Interface
+
+	lines := strings.Split(addrOutput, "\n")
+	for _, line := range lines {
+		// 匹配接口: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500
+		if nameRegex := regexp.MustCompile(`^\d+:\s+(\S+):\s+<([^>]*)>`); nameRegex.MatchString(line) {
+			matches := nameRegex.FindStringSubmatch(line)
+			name := strings.TrimSuffix(matches[1], ":")
+			flags := matches[2]
+
+			currentInterface = &models.Interface{
+				Name:   name,
+				Status: "down",
+			}
+
+			if strings.Contains(flags, "UP") {
+				currentInterface.Status = "up"
+			}
+
+			// 提取MTU
+			if mtuRegex := regexp.MustCompile(`mtu\s+(\d+)`); mtuRegex.MatchString(line) {
+				matches := mtuRegex.FindStringSubmatch(line)
+				currentInterface.MTU = 0
+				fmt.Sscanf(matches[1], "%d", &currentInterface.MTU)
+			}
+
+			interfaceMap[name] = currentInterface
+			interfaces = append(interfaces, *currentInterface)
+		}
+
+		if currentInterface != nil {
+			// 提取MAC地址
+			if macRegex := regexp.MustCompile(`link/ether\s+(\S+)`); macRegex.MatchString(line) {
+				matches := macRegex.FindStringSubmatch(line)
+				currentInterface.MAC = matches[1]
+			}
+
+			// 提取IP地址
+			if ipRegex := regexp.MustCompile(`inet\s+(\d+\.\d+\.\d+\.\d+)/(\d+)`); ipRegex.MatchString(line) {
+				matches := ipRegex.FindStringSubmatch(line)
+				currentInterface.IP = matches[1]
+				currentInterface.Mask = matches[2]
+			}
+		}
+	}
+
+	// 更新接口列表
+	finalInterfaces := make([]models.Interface, 0, len(interfaceMap))
+	for _, iface := range interfaceMap {
+		finalInterfaces = append(finalInterfaces, *iface)
+	}
+
+	return finalInterfaces
+}