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/parser.go

@@ -0,0 +1,94 @@
+package device
+
+import (
+	"network-topology-discovery/pkg/models"
+	sshclient "network-topology-discovery/internal/ssh"
+)
+
+// Parser 设备解析器接口
+type Parser interface {
+	// GetCommands 获取需要执行的命令列表
+	GetCommands() []string
+	
+	// Parse 解析命令输出,填充设备信息
+	Parse(device *models.Device, outputs []string) error
+	
+	// GetType 获取设备类型
+	GetType() models.DeviceType
+}
+
+// BaseParser 基础解析器
+type BaseParser struct {
+	DeviceType models.DeviceType
+}
+
+// GetType 获取设备类型
+func (b *BaseParser) GetType() models.DeviceType {
+	return b.DeviceType
+}
+
+// DiscoverDevice 发现并采集设备信息
+func DiscoverDevice(ip string, deviceType models.DeviceType, username, password string) (*models.Device, error) {
+	device := &models.Device{
+		IP:   ip,
+		Type: deviceType,
+	}
+
+	// 创建SSH客户端 - 默认启用不安全加密算法以兼容老旧设备
+	client := sshclient.NewClient(sshclient.Config{
+		Host:             ip,
+		Username:         username,
+		Password:         password,
+		InsecureCiphers:  true, // 启用旧版加密算法支持
+	})
+
+	// 连接
+	if err := client.Connect(); err != nil {
+		device.ScanStatus = "failed"
+		device.ErrorMessage = err.Error()
+		return device, err
+	}
+	defer client.Close()
+
+	// 获取对应的解析器
+	var parser Parser
+	switch deviceType {
+	case models.DeviceTypeCisco:
+		parser = &CiscoParser{}
+	case models.DeviceTypeHuawei:
+		parser = &HuaweiParser{}
+	case models.DeviceTypeH3C:
+		parser = &H3CParser{}
+	case models.DeviceTypeASA:
+		parser = &ASAParser{}
+	case models.DeviceTypeLinux:
+		parser = &LinuxParser{}
+	case models.DeviceTypeWindows:
+		parser = &WindowsParser{}
+	default:
+		device.ScanStatus = "failed"
+		device.ErrorMessage = "unsupported device type"
+		return device, nil
+	}
+
+	// 获取命令列表
+	commands := parser.GetCommands()
+
+	// 执行命令
+	outputs, err := client.ExecuteCommands(commands)
+	if err != nil {
+		device.ScanStatus = "failed"
+		device.ErrorMessage = err.Error()
+		return device, err
+	}
+
+	// 解析输出
+	if err := parser.Parse(device, outputs); err != nil {
+		device.ScanStatus = "failed"
+		device.ErrorMessage = err.Error()
+		return device, err
+	}
+
+	device.ScanStatus = "success"
+	return device, nil
+}