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将原有的878行单一文件重构为多个专门化模块: - 类型定义模块:集中管理所有数据结构 - 扫描器核心:初始化和全局状态管理 - 编码工具:处理各种编码格式转换 - 探测器解析:解析nmap-service-probes格式 - 匹配引擎:模式匹配和服务识别 - 版本解析:服务版本信息提取 通过向后兼容层保持原有API接口不变,确保现有代码无需修改即可使用新架构
292 lines
7.7 KiB
Go
292 lines
7.7 KiB
Go
package portfinger
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/shadow1ng/fscan/common"
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)
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// 解析指令语法,返回指令结构
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func (p *Probe) getDirectiveSyntax(data string) (directive Directive) {
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common.LogDebug("开始解析指令语法,输入数据: " + data)
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directive = Directive{}
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// 查找第一个空格的位置
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blankIndex := strings.Index(data, " ")
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if blankIndex == -1 {
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common.LogDebug("未找到空格分隔符")
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return directive
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}
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// 解析各个字段
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directiveName := data[:blankIndex]
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Flag := data[blankIndex+1 : blankIndex+2]
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delimiter := data[blankIndex+2 : blankIndex+3]
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directiveStr := data[blankIndex+3:]
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directive.DirectiveName = directiveName
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directive.Flag = Flag
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directive.Delimiter = delimiter
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directive.DirectiveStr = directiveStr
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common.LogDebug(fmt.Sprintf("指令解析结果: 名称=%s, 标志=%s, 分隔符=%s, 内容=%s",
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directiveName, Flag, delimiter, directiveStr))
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return directive
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}
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// 解析探测器信息
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func (p *Probe) parseProbeInfo(probeStr string) {
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common.LogDebug("开始解析探测器信息,输入字符串: " + probeStr)
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// 提取协议和其他信息
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proto := probeStr[:4]
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other := probeStr[4:]
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// 验证协议类型
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if !(proto == "TCP " || proto == "UDP ") {
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errMsg := "探测器协议必须是 TCP 或 UDP"
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common.LogDebug("错误: " + errMsg)
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panic(errMsg)
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}
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// 验证其他信息不为空
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if len(other) == 0 {
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errMsg := "nmap-service-probes - 探测器名称无效"
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common.LogDebug("错误: " + errMsg)
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panic(errMsg)
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}
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// 解析指令
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directive := p.getDirectiveSyntax(other)
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// 设置探测器属性
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p.Name = directive.DirectiveName
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p.Data = strings.Split(directive.DirectiveStr, directive.Delimiter)[0]
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p.Protocol = strings.ToLower(strings.TrimSpace(proto))
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common.LogDebug(fmt.Sprintf("探测器解析完成: 名称=%s, 数据=%s, 协议=%s",
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p.Name, p.Data, p.Protocol))
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}
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// 从字符串解析探测器信息
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func (p *Probe) fromString(data string) error {
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common.LogDebug("开始解析探测器字符串数据")
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var err error
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// 预处理数据
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data = strings.TrimSpace(data)
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lines := strings.Split(data, "\n")
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if len(lines) == 0 {
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return fmt.Errorf("输入数据为空")
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}
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probeStr := lines[0]
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p.parseProbeInfo(probeStr)
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// 解析匹配规则和其他配置
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var matchs []Match
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for _, line := range lines {
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common.LogDebug("处理行: " + line)
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switch {
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case strings.HasPrefix(line, "match "):
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match, err := p.getMatch(line)
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if err != nil {
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common.LogDebug("解析match失败: " + err.Error())
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continue
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}
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matchs = append(matchs, match)
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case strings.HasPrefix(line, "softmatch "):
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softMatch, err := p.getSoftMatch(line)
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if err != nil {
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common.LogDebug("解析softmatch失败: " + err.Error())
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continue
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}
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matchs = append(matchs, softMatch)
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case strings.HasPrefix(line, "ports "):
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p.parsePorts(line)
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case strings.HasPrefix(line, "sslports "):
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p.parseSSLPorts(line)
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case strings.HasPrefix(line, "totalwaitms "):
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p.parseTotalWaitMS(line)
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case strings.HasPrefix(line, "tcpwrappedms "):
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p.parseTCPWrappedMS(line)
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case strings.HasPrefix(line, "rarity "):
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p.parseRarity(line)
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case strings.HasPrefix(line, "fallback "):
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p.parseFallback(line)
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}
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}
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p.Matchs = &matchs
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common.LogDebug(fmt.Sprintf("解析完成,共有 %d 个匹配规则", len(matchs)))
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return err
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}
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// 解析端口配置
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func (p *Probe) parsePorts(data string) {
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p.Ports = data[len("ports")+1:]
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common.LogDebug("解析端口: " + p.Ports)
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}
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// 解析SSL端口配置
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func (p *Probe) parseSSLPorts(data string) {
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p.SSLPorts = data[len("sslports")+1:]
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common.LogDebug("解析SSL端口: " + p.SSLPorts)
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}
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// 解析总等待时间
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func (p *Probe) parseTotalWaitMS(data string) {
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waitMS, err := strconv.Atoi(strings.TrimSpace(data[len("totalwaitms")+1:]))
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if err != nil {
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common.LogDebug("解析总等待时间失败: " + err.Error())
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return
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}
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p.TotalWaitMS = waitMS
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common.LogDebug(fmt.Sprintf("总等待时间: %d ms", waitMS))
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}
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// 解析TCP包装等待时间
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func (p *Probe) parseTCPWrappedMS(data string) {
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wrappedMS, err := strconv.Atoi(strings.TrimSpace(data[len("tcpwrappedms")+1:]))
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if err != nil {
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common.LogDebug("解析TCP包装等待时间失败: " + err.Error())
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return
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}
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p.TCPWrappedMS = wrappedMS
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common.LogDebug(fmt.Sprintf("TCP包装等待时间: %d ms", wrappedMS))
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}
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// 解析稀有度
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func (p *Probe) parseRarity(data string) {
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rarity, err := strconv.Atoi(strings.TrimSpace(data[len("rarity")+1:]))
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if err != nil {
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common.LogDebug("解析稀有度失败: " + err.Error())
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return
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}
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p.Rarity = rarity
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common.LogDebug(fmt.Sprintf("稀有度: %d", rarity))
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}
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// 解析回退配置
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func (p *Probe) parseFallback(data string) {
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p.Fallback = data[len("fallback")+1:]
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common.LogDebug("回退配置: " + p.Fallback)
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}
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// 从内容解析探测器规则
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func (v *VScan) parseProbesFromContent(content string) {
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common.LogDebug("开始解析探测器规则文件内容")
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var probes []Probe
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var lines []string
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// 过滤注释和空行
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linesTemp := strings.Split(content, "\n")
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for _, lineTemp := range linesTemp {
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lineTemp = strings.TrimSpace(lineTemp)
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if lineTemp == "" || strings.HasPrefix(lineTemp, "#") {
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continue
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}
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lines = append(lines, lineTemp)
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}
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// 验证文件内容
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if len(lines) == 0 {
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errMsg := "读取nmap-service-probes文件失败: 内容为空"
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common.LogDebug("错误: " + errMsg)
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panic(errMsg)
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}
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// 检查Exclude指令
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excludeCount := 0
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for _, line := range lines {
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if strings.HasPrefix(line, "Exclude ") {
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excludeCount++
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}
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if excludeCount > 1 {
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errMsg := "nmap-service-probes文件中只允许有一个Exclude指令"
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common.LogDebug("错误: " + errMsg)
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panic(errMsg)
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}
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}
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// 验证第一行格式
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firstLine := lines[0]
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if !(strings.HasPrefix(firstLine, "Exclude ") || strings.HasPrefix(firstLine, "Probe ")) {
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errMsg := "解析错误: 首行必须以\"Probe \"或\"Exclude \"开头"
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common.LogDebug("错误: " + errMsg)
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panic(errMsg)
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}
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// 处理Exclude指令
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if excludeCount == 1 {
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v.Exclude = firstLine[len("Exclude")+1:]
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lines = lines[1:]
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common.LogDebug("解析到Exclude规则: " + v.Exclude)
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}
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// 合并内容并分割探测器
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content = "\n" + strings.Join(lines, "\n")
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probeParts := strings.Split(content, "\nProbe")[1:]
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// 解析每个探测器
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for _, probePart := range probeParts {
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probe := Probe{}
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if err := probe.fromString(probePart); err != nil {
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common.LogDebug(fmt.Sprintf("解析探测器失败: %v", err))
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continue
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}
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probes = append(probes, probe)
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}
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v.AllProbes = probes
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common.LogDebug(fmt.Sprintf("成功解析 %d 个探测器规则", len(probes)))
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}
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// 将探测器转换为名称映射
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func (v *VScan) parseProbesToMapKName() {
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common.LogDebug("开始构建探测器名称映射")
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v.ProbesMapKName = map[string]Probe{}
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for _, probe := range v.AllProbes {
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v.ProbesMapKName[probe.Name] = probe
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common.LogDebug("添加探测器映射: " + probe.Name)
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}
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}
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// 设置使用的探测器
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func (v *VScan) SetusedProbes() {
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common.LogDebug("开始设置要使用的探测器")
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for _, probe := range v.AllProbes {
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if strings.ToLower(probe.Protocol) == "tcp" {
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if probe.Name == "SSLSessionReq" {
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common.LogDebug("跳过 SSLSessionReq 探测器")
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continue
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}
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v.Probes = append(v.Probes, probe)
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common.LogDebug("添加TCP探测器: " + probe.Name)
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// 特殊处理TLS会话请求
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if probe.Name == "TLSSessionReq" {
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sslProbe := v.ProbesMapKName["SSLSessionReq"]
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v.Probes = append(v.Probes, sslProbe)
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common.LogDebug("为TLSSessionReq添加SSL探测器")
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}
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} else {
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v.UdpProbes = append(v.UdpProbes, probe)
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common.LogDebug("添加UDP探测器: " + probe.Name)
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}
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}
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common.LogDebug(fmt.Sprintf("探测器设置完成,TCP: %d个, UDP: %d个",
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len(v.Probes), len(v.UdpProbes)))
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} |