Your Name
6d2323b5b6
- Add support for LLDP verbose output format (display lldp neighbor-information verbose) - Parse System name field for accurate device hostname matching - Parse Management address field for IP-based neighbor identification - Handle edge cases: endpoint devices without System name (fallback to MAC) - Handle Port ID as MAC address (not interface name) for endpoint devices - Add detailed debug logging for LLDP neighbor parsing - Implement three-level fallback strategy: System name > Management IP > MAC address This fixes the topology auto-linking issue where only 1 link was created despite having neighbor data.
435 lines
13 KiB
Go
435 lines
13 KiB
Go
package device
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import (
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"bufio"
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"fmt"
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"network-topology-discovery/pkg/models"
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"regexp"
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"strings"
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)
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// H3CParser H3C设备解析器
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type H3CParser struct {
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BaseParser
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}
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// GetCommands 获取H3C设备命令列表
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func (p *H3CParser) GetCommands() []string {
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return []string{
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"screen-length disable", // 禁用分页（H3C/华为设备必需）
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"display version",
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"display interface",
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"display interface brief", // 接口简要信息（包含VLAN和物理接口状态）
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"display lldp neighbor-information verbose", // LLDP邻居详细信息（包含System name和Management address）
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}
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}
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// Parse 解析H3C设备输出
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func (p *H3CParser) Parse(device *models.Device, outputs []string) error {
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if len(outputs) < 5 {
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return fmt.Errorf("insufficient command outputs")
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}
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// outputs[0] 是 screen-length disable 的输出（通常为空）
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p.parseVersion(device, outputs[1]) // outputs[1] 是 display version
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// outputs[2] 是 display interface
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fmt.Printf("[H3C DEBUG] display interface output length: %d\n", len(outputs[2]))
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if len(outputs[2]) > 0 {
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// 如果输出小于1000字节，完整输出以便调试
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if len(outputs[2]) <= 1000 {
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fmt.Printf("[H3C DEBUG] Complete output:\n%s\n", outputs[2])
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} else {
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fmt.Printf("[H3C DEBUG] First 200 chars: %q\n", outputs[2][:200])
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}
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} else {
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fmt.Printf("[H3C DEBUG] display interface output is EMPTY!\n")
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}
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if outputs[2] == "" {
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fmt.Printf("Warning: 'display interface' output is empty for device %s\n", device.IP)
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} else {
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// outputs[3] 是 display interface brief
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device.Interfaces = p.parseInterfaces(outputs[2], outputs[3])
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if len(device.Interfaces) == 0 {
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fmt.Printf("Warning: parsed 0 interfaces for device %s (output length: %d)\n",
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device.IP, len(outputs[2]))
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}
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// 收集所有接口的MAC地址（用于邻居匹配）
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macSet := make(map[string]bool)
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for _, iface := range device.Interfaces {
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if iface.MAC != "" {
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macSet[iface.MAC] = true
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} else {
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fmt.Printf(" Interface %s has no MAC address\n", iface.Name)
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}
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}
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for mac := range macSet {
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device.MACAddresses = append(device.MACAddresses, mac)
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}
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fmt.Printf(" Collected %d unique MAC addresses for device %s\n", len(macSet), device.IP)
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}
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// outputs[4] 是 display lldp neighbor-information
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// 解析LLDP邻居
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device.Neighbors = p.parseNeighbors(outputs[4], nil)
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fmt.Printf("Device %s: %d interfaces, %d neighbors\n",
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device.IP, len(device.Interfaces), len(device.Neighbors))
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return nil
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}
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func (p *H3CParser) parseVersion(device *models.Device, output string) {
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hostnameRegex := regexp.MustCompile(`<(\S+)>`)
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if matches := hostnameRegex.FindStringSubmatch(output); len(matches) > 1 {
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device.Hostname = matches[1]
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}
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if strings.Contains(output, "Comware") {
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lines := strings.Split(output, "\n")
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for _, line := range lines {
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if strings.Contains(line, "Comware") {
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device.OSVersion = strings.TrimSpace(line)
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break
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}
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}
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}
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uptimeRegex := regexp.MustCompile(`uptime is\s+(\d+\s+\S+)`)
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if matches := uptimeRegex.FindStringSubmatch(output); len(matches) > 1 {
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device.Uptime = matches[1]
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}
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}
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func (p *H3CParser) parseInterfaces(interfaceOutput, briefOutput string) []models.Interface {
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var interfaces []models.Interface
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briefMap := p.parseInterfaceBrief(briefOutput)
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scanner := bufio.NewScanner(strings.NewReader(interfaceOutput))
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var currentInterface *models.Interface
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var pendingInterfaceName string // 暂存接口名
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for scanner.Scan() {
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line := scanner.Text()
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// H3C接口输出格式1: 接口名和状态在同一行
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// GigabitEthernet1/0/0 current state: UP
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if nameRegex := regexp.MustCompile(`^(\S+)\s+current state:\s+(UP|DOWN)`); nameRegex.MatchString(line) {
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if currentInterface != nil {
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interfaces = append(interfaces, *currentInterface)
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}
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matches := nameRegex.FindStringSubmatch(line)
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currentInterface = &models.Interface{
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Name: matches[1],
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Status: strings.ToLower(matches[2]),
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}
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if brief, ok := briefMap[currentInterface.Name]; ok {
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currentInterface.IP = brief.IP
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}
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pendingInterfaceName = ""
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continue
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}
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// H3C接口输出格式2: 接口名单独一行，下一行是状态
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// GigabitEthernet1/0/0
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// Current state: DOWN
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if pendingInterfaceName != "" && regexp.MustCompile(`^Current state:\s+(UP|DOWN)`).MatchString(line) {
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matches := regexp.MustCompile(`^Current state:\s+(UP|DOWN)`).FindStringSubmatch(line)
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if currentInterface != nil {
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interfaces = append(interfaces, *currentInterface)
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}
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currentInterface = &models.Interface{
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Name: pendingInterfaceName,
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Status: strings.ToLower(matches[1]),
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}
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if brief, ok := briefMap[currentInterface.Name]; ok {
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currentInterface.IP = brief.IP
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}
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pendingInterfaceName = ""
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continue
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}
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// 匹配接口名（单独一行的情况）
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// 格式: GigabitEthernet1/0/0
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if interfaceNameRegex := regexp.MustCompile(`^(GigabitEthernet|Ten-GigabitEthernet|FortyGigE|HundredGigE|Ethernet|Serial|LoopBack|Vlanif|NULL|Bridge-Aggregate|Route-Aggregate)\S*`); interfaceNameRegex.MatchString(line) {
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pendingInterfaceName = interfaceNameRegex.FindString(line)
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continue
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}
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// 解析接口属性
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if currentInterface != nil {
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if descRegex := regexp.MustCompile(`Description:\s+(.+)`); descRegex.MatchString(line) {
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currentInterface.Description = descRegex.FindStringSubmatch(line)[1]
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}
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if macRegex := regexp.MustCompile(`hardware address:\s+(\S+)`); macRegex.MatchString(line) {
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currentInterface.MAC = macRegex.FindStringSubmatch(line)[1]
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}
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// 匹配IP地址格式: Internet address: 192.168.0.1/24 (primary)
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if ipRegex := regexp.MustCompile(`Internet address:\s+(\d+\.\d+\.\d+\.\d+)/(\d+)`); ipRegex.MatchString(line) {
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matches := ipRegex.FindStringSubmatch(line)
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currentInterface.IP = matches[1]
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// CIDR转换为子网掩码
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currentInterface.Mask = cidrToMask(matches[2])
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}
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if speedRegex := regexp.MustCompile(`(\d+)\s+(Kbps|Mbps|Gbps)`); speedRegex.MatchString(line) {
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matches := speedRegex.FindStringSubmatch(line)
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currentInterface.Speed = matches[1] + " " + matches[2]
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}
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}
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}
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if currentInterface != nil {
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interfaces = append(interfaces, *currentInterface)
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}
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return interfaces
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}
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// cidrToMask CIDR转换为子网掩码
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func cidrToMask(cidr string) string {
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var mask int
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fmt.Sscanf(cidr, "%d", &mask)
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s := uint32(0)
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for i := 0; i < mask; i++ {
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s |= (1 << (31 - uint(i)))
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}
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return fmt.Sprintf("%d.%d.%d.%d",
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(s>>24)&0xFF,
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(s>>16)&0xFF,
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(s>>8)&0xFF,
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s&0xFF)
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}
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// parseARPTable 解析ARP表，建立MAC到IP的映射
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func (p *H3CParser) parseARPTable(output string) map[string]string {
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macToIP := make(map[string]string)
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lines := strings.Split(output, "\n")
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for _, line := range lines {
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// 跳过空行和标题行
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if strings.TrimSpace(line) == "" ||
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strings.Contains(line, "Type:") ||
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strings.Contains(line, "------") ||
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strings.Contains(line, "IP address") {
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continue
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}
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// ARP表格式: IP address MAC address VLAN/VSI name Interface Aging Type
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// 例: 172.16.8.10 743a-2047-38e0 8 GE1/0/47 1163 D
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fields := strings.Fields(line)
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if len(fields) >= 2 {
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ip := fields[0]
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mac := strings.ToLower(fields[1])
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// 验证是有效的IP和MAC
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if isValidIP(ip) && isValidMAC(mac) {
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macToIP[mac] = ip
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}
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}
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}
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return macToIP
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}
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func (p *H3CParser) parseInterfaceBrief(output string) map[string]models.Interface {
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interfaces := make(map[string]models.Interface)
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lines := strings.Split(output, "\n")
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for _, line := range lines {
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fields := strings.Fields(line)
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if len(fields) >= 4 {
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iface := models.Interface{
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Name: fields[0],
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IP: fields[1],
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Status: strings.ToLower(fields[3]),
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}
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interfaces[iface.Name] = iface
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}
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}
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return interfaces
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}
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func (p *H3CParser) parseNeighbors(output string, arpTable map[string]string) []models.Neighbor {
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var neighbors []models.Neighbor
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scanner := bufio.NewScanner(strings.NewReader(output))
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var currentNeighbor *models.Neighbor
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var localInterface string
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for scanner.Scan() {
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line := scanner.Text()
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// 匹配本地接口行: LLDP neighbor-information of port 20[GigabitEthernet1/0/20]:
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if portRegex := regexp.MustCompile(`LLDP neighbor-information of port \d+\[([^\]]+)\]:`); portRegex.MatchString(line) {
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// 保存前一个邻居
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if currentNeighbor != nil && currentNeighbor.RemoteInterface != "" {
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neighbors = append(neighbors, *currentNeighbor)
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}
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matches := portRegex.FindStringSubmatch(line)
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localInterface = matches[1]
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currentNeighbor = &models.Neighbor{
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LocalInterface: localInterface,
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Protocol: "LLDP",
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}
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continue
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}
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if currentNeighbor != nil {
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// 提取 ChassisID (MAC地址)
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// Verbose格式: Chassis ID: 642f-c7e0-0333
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if strings.Contains(line, "Chassis ID:") && !strings.Contains(line, "ChassisID/subtype") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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mac := strings.TrimSpace(strings.ToLower(parts[1]))
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if isValidMAC(mac) {
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currentNeighbor.RemoteMAC = mac
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// 如果还没有RemoteDevice，先使用MAC作为占位符（后续可能被System name覆盖）
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if currentNeighbor.RemoteDevice == "" {
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currentNeighbor.RemoteDevice = mac
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}
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fmt.Printf(" [LLDP] Parsed neighbor MAC (verbose): %s\n", mac)
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}
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}
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}
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// 非verbose格式: ChassisID/subtype: a4bb-6de2-62cd/MAC address
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if strings.Contains(line, "ChassisID/subtype") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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value := strings.TrimSpace(parts[1])
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// 格式: a4bb-6de2-62cd/MAC address
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if macParts := strings.Split(value, "/"); len(macParts) > 0 {
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mac := strings.TrimSpace(strings.ToLower(macParts[0]))
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currentNeighbor.RemoteMAC = mac
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if currentNeighbor.RemoteDevice == "" {
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currentNeighbor.RemoteDevice = mac
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}
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fmt.Printf(" [LLDP] Parsed neighbor MAC: %s\n", mac)
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}
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}
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}
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// 提取 System name (verbose格式)
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if strings.Contains(line, "System name:") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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systemName := strings.TrimSpace(parts[1])
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if systemName != "" {
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// System name 是最可靠的匹配方式，覆盖之前的MAC地址占位符
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currentNeighbor.RemoteDevice = systemName
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fmt.Printf(" [LLDP] Parsed neighbor System name: %s\n", systemName)
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}
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}
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}
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// 提取 Management address (verbose格式)
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if strings.Contains(line, "Management address:") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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mgmtAddr := strings.TrimSpace(parts[1])
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if isValidIP(mgmtAddr) {
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// 如果还没有RemoteIP，使用Management address
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if currentNeighbor.RemoteIP == "" {
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currentNeighbor.RemoteIP = mgmtAddr
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fmt.Printf(" [LLDP] Parsed neighbor Management address: %s\n", mgmtAddr)
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}
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}
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}
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}
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// 提取 PortID (远程接口)
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// Verbose格式: Port ID: GigabitEthernet1/0/48 或 Port ID: a4bb-6de2-62cd (MAC地址)
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if strings.Contains(line, "Port ID:") && !strings.Contains(line, "PortID/subtype") && !strings.Contains(line, "Port ID type") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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portID := strings.TrimSpace(parts[1])
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// 检查Port ID是否是MAC地址（格式: a4bb-6de2-62cd）
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if isValidMAC(portID) {
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// Port ID是MAC地址，不赋值给RemoteInterface
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fmt.Printf(" [LLDP] Port ID is MAC address (not interface): %s\n", portID)
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} else {
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// Port ID是接口名
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currentNeighbor.RemoteInterface = portID
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}
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}
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}
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// 非verbose格式: PortID/subtype: GigabitEthernet0/0/1/Interface name
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if strings.Contains(line, "PortID/subtype") {
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parts := strings.SplitN(line, ":", 2)
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if len(parts) == 2 {
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value := strings.TrimSpace(parts[1])
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// 格式: GigabitEthernet0/0/1/Interface name
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if portParts := strings.Split(value, "/"); len(portParts) >= 3 {
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// 取前3部分作为接口名: GigabitEthernet0/0/1
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currentNeighbor.RemoteInterface = strings.Join(portParts[:3], "/")
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}
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}
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}
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}
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}
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// 添加最后一个邻居（修改：只要有RemoteDevice或RemoteInterface就添加）
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if currentNeighbor != nil && (currentNeighbor.RemoteDevice != "" || currentNeighbor.RemoteInterface != "") {
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// 如果Port ID是MAC地址而不是接口名，将MAC赋值给RemoteInterface（如果为空）
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if currentNeighbor.RemoteInterface == "" && currentNeighbor.RemoteMAC != "" {
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// 检查Port ID是否是MAC地址（在解析过程中可能已经将MAC作为Port ID）
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// 这种情况发生在Port ID type为MAC address时
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fmt.Printf(" [LLDP] Neighbor has no interface name, using MAC as identifier: %s\n", currentNeighbor.RemoteMAC)
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}
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neighbors = append(neighbors, *currentNeighbor)
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}
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return neighbors
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}
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// isValidIP 简单验证IP地址
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func isValidIP(ip string) bool {
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parts := strings.Split(ip, ".")
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if len(parts) != 4 {
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return false
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}
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for _, part := range parts {
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if len(part) == 0 || len(part) > 3 {
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return false
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}
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for _, c := range part {
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if c < '0' || c > '9' {
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return false
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}
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}
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}
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return true
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}
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// isValidMAC 简单验证MAC地址
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func isValidMAC(mac string) bool {
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parts := strings.Split(mac, "-")
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if len(parts) != 3 && len(parts) != 6 {
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return false
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}
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for _, part := range parts {
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if len(part) != 2 {
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return false
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}
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for _, c := range part {
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if !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) {
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return false
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}
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}
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}
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return true
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}
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