mirror of
https://gitee.com/samwaf/SamWaf.git
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samwaf
1077 lines
34 KiB
Go
1077 lines
34 KiB
Go
package wafenginecore
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import (
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"SamWaf/common/zlog"
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"SamWaf/customtype"
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"SamWaf/enums"
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"SamWaf/global"
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"SamWaf/innerbean"
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"SamWaf/model"
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"SamWaf/model/baseorm"
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"SamWaf/model/detection"
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"SamWaf/model/wafenginmodel"
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"SamWaf/service/waf_service"
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"SamWaf/utils"
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"SamWaf/wafenginecore/loadbalance"
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"SamWaf/wafproxy"
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"SamWaf/webplugin"
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"bufio"
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"bytes"
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"compress/flate"
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"compress/gzip"
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"context"
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"crypto/tls"
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"encoding/json"
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"errors"
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"fmt"
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goahocorasick "github.com/anknown/ahocorasick"
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"github.com/satori/go.uuid"
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"go.uber.org/zap"
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"golang.org/x/net/html/charset"
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"golang.org/x/text/encoding"
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"golang.org/x/text/encoding/unicode"
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"golang.org/x/text/transform"
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"golang.org/x/time/rate"
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"io"
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"net"
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"net/http"
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_ "net/http/pprof"
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"net/url"
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"runtime/debug"
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"strconv"
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"strings"
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"sync/atomic"
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"time"
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)
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type WafEngine struct {
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//主机情况（key:主机名+":"+端口,value : hostsafe信息里面有规则,ip信息等）
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HostTarget map[string]*wafenginmodel.HostSafe
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//主机和code的关系（key:主机code,value:主机名+":"+端口）
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HostCode map[string]string
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//主机域名和配置防护关系 (key:主机域名,value:主机的hostCode)
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HostTargetNoPort map[string]string
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//服务在线情况（key：端口，value :服务情况）
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ServerOnline map[int]innerbean.ServerRunTime
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//所有证书情况 对应端口 可能多个端口都是https 443，或者其他非标准端口也要实现https证书
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//嵌套结构 (key：端口 ，再往下是 下面的主机名，value 证书)
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AllCertificate map[int]map[string]*tls.Certificate
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EngineCurrentStatus int // 当前waf引擎状态
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//敏感词管理
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Sensitive []model.Sensitive //敏感词
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SensitiveManager *goahocorasick.Machine
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}
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func (waf *WafEngine) Error() string {
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fs := "HTTP: %d, HostCode: %d, Message: %s"
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return fmt.Sprintf(fs)
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}
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func (waf *WafEngine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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atomic.AddUint64(&global.GWAF_RUNTIME_QPS, 1) // 原子增加计数器
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host := r.Host
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if !strings.Contains(host, ":") {
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// 检查请求是否使用了HTTPS
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if r.TLS != nil {
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// 请求使用了HTTPS
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host = host + ":443"
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} else {
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// 请求使用了HTTP
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host = host + ":80"
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}
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}
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defer func() {
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e := recover()
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if e != nil { // 捕获该协程的panic 111111
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fmt.Println("11recover ", e)
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debug.PrintStack() // 打印堆栈信息
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}
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}()
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//检测是否是不检测端口的情况
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if target, ok := waf.HostTargetNoPort[utils.GetPureDomain(host)]; ok {
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host = target
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}
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// 检查域名是否已经注册
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if target, ok := waf.HostTarget[host]; ok {
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// 取出客户IP
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ipErr, clientIP, clientPort := waf.getClientIP(r, strings.Split(global.GCONFIG_RECORD_PROXY_HEADER, ",")...)
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if ipErr != nil {
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zlog.Error("get client error", ipErr.Error())
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return
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}
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_, ok := waf.ServerOnline[waf.HostTarget[host].Host.Remote_port]
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//检测如果访问IP和远程IP是同一个IP，且远程端口在本地Server已存在则显示配置错误
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if clientIP == waf.HostTarget[host].Host.Remote_ip && ok == true {
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resBytes := []byte("500: 配置有误" + host + " 当前IP和访问远端IP一样，且端口也一样，会造成循环问题")
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_, err := w.Write(resBytes)
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if err != nil {
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zlog.Debug("write fail:", zap.Any("", err))
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return
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}
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return
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}
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// 获取请求报文的内容长度
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contentLength := r.ContentLength
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var bodyByte []byte
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// 拷贝一份request的Body ,控制不记录大文件的情况 ，先写死的
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if r.Body != nil && r.Body != http.NoBody && contentLength < (global.GCONFIG_RECORD_MAX_BODY_LENGTH) {
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bodyByte, _ = io.ReadAll(r.Body)
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// 把刚刚读出来的再写进去，不然后面解析表单数据就解析不到了
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r.Body = io.NopCloser(bytes.NewBuffer(bodyByte))
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}
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cookies, _ := json.Marshal(r.Cookies())
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header := ""
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for key, values := range r.Header {
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for _, value := range values {
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header += key + ": " + value + "\r\n"
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}
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}
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region := utils.GetCountry(clientIP)
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currentDay, _ := strconv.Atoi(time.Now().Format("20060102"))
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//URL 解码
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enEscapeUrl, _urlEscapeOk := url.QueryUnescape(r.RequestURI)
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if _urlEscapeOk != nil {
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enEscapeUrl = r.RequestURI
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}
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datetimeNow := time.Now()
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weblogbean := innerbean.WebLog{
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HOST: host,
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URL: enEscapeUrl,
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REFERER: r.Referer(),
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USER_AGENT: r.UserAgent(),
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METHOD: r.Method,
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HEADER: string(header),
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COUNTRY: region[0],
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PROVINCE: region[2],
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CITY: region[3],
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SRC_IP: clientIP,
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SRC_PORT: clientPort,
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CREATE_TIME: datetimeNow.Format("2006-01-02 15:04:05"),
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UNIX_ADD_TIME: datetimeNow.UnixNano() / 1e6,
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CONTENT_LENGTH: contentLength,
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COOKIES: string(cookies),
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BODY: string(bodyByte),
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REQ_UUID: uuid.NewV4().String(),
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USER_CODE: global.GWAF_USER_CODE,
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HOST_CODE: waf.HostTarget[host].Host.Code,
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TenantId: global.GWAF_TENANT_ID,
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RULE: "",
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ACTION: "通过",
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Day: currentDay,
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POST_FORM: r.PostForm.Encode(),
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TASK_FLAG: -1,
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RISK_LEVEL: 0, //危险等级
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GUEST_IDENTIFICATION: "正常访客", //访客身份识别
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TimeSpent: 0,
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}
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formValues := url.Values{}
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if strings.Contains(r.Header.Get("Content-Type"), "application/x-www-form-urlencoded") {
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// 解码 x-www-form-urlencoded 数据
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formValuest, err := url.ParseQuery(weblogbean.BODY)
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if err == nil {
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formValues = formValuest
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} else {
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fmt.Println("解码失败:", err)
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fmt.Println("解码失败:", weblogbean.BODY)
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}
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}
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r.Header.Add("waf_req_uuid", weblogbean.REQ_UUID)
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if waf.HostTarget[host].Host.GUARD_STATUS == 1 {
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//一系列检测逻辑
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handleBlock := func(checkFunc func(*innerbean.WebLog, url.Values) detection.Result) bool {
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detectionResult := checkFunc(&weblogbean, formValues)
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if detectionResult.IsBlock {
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EchoErrorInfo(w, r, weblogbean, detectionResult.Title, detectionResult.Content)
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return true
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}
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return false
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}
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detectionResult := waf.CheckAllowIP(&weblogbean, formValues)
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detectionResult = waf.CheckAllowURL(weblogbean, formValues)
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if detectionResult.JumpGuardResult == false {
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if handleBlock(waf.CheckDenyIP) {
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return
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}
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if handleBlock(waf.CheckDenyURL) {
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return
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}
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hostDefense := model.HostsDefense{
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DEFENSE_BOT: 1,
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DEFENSE_SQLI: 1,
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DEFENSE_XSS: 1,
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DEFENSE_SCAN: 1,
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DEFENSE_RCE: 1,
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DEFENSE_SENSITIVE: 1,
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}
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err := json.Unmarshal([]byte(waf.HostTarget[host].Host.DEFENSE_JSON), &hostDefense)
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if err != nil {
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zlog.Error("解析defense json失败")
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}
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//检测爬虫bot
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if hostDefense.DEFENSE_BOT == 1 {
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if handleBlock(waf.CheckBot) {
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return
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}
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}
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//检测sqli
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if hostDefense.DEFENSE_SQLI == 1 {
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if handleBlock(waf.CheckSql) {
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return
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}
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}
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//检测xss
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if hostDefense.DEFENSE_XSS == 1 {
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if handleBlock(waf.CheckXss) {
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return
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}
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}
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//检测扫描工具
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if hostDefense.DEFENSE_SCAN == 1 {
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if handleBlock(waf.CheckSan) {
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return
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}
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}
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//检测RCE
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if hostDefense.DEFENSE_RCE == 1 {
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if handleBlock(waf.CheckRce) {
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return
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}
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}
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//检测CC
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if handleBlock(waf.CheckCC) {
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return
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}
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//规则判断
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if handleBlock(waf.CheckRule) {
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return
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}
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//检测敏感词
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if hostDefense.DEFENSE_SENSITIVE == 1 {
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if handleBlock(waf.CheckSensitive) {
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return
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}
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}
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}
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}
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// 日志保存时候也是脱敏保存防止，数据库密码被破解，遭到敏感信息遭到泄露
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if weblogbean.BODY != "" {
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weblogbean.BODY = utils.DeSenTextByCustomMark(enums.DLP_MARK_RULE_LoginSensitiveInfoMaskRule, weblogbean.BODY)
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}
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remoteUrl, err := url.Parse(target.TargetHost)
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if err != nil {
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zlog.Debug("target parse fail:", zap.Any("", err))
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return
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}
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// 在请求上下文中存储自定义数据
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ctx := context.WithValue(r.Context(), "weblog", weblogbean)
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// 代理请求
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waf.ProxyHTTP(w, r, host, remoteUrl, clientIP, ctx, weblogbean)
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return
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} else {
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resBytes := []byte("403: Host forbidden " + host)
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_, err := w.Write(resBytes)
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if err != nil {
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zlog.Debug("write fail:", zap.Any("", err))
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return
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}
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// 获取请求报文的内容长度
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contentLength := r.ContentLength
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//server_online[8081].Svr.Close()
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var bodyByte []byte
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// 拷贝一份request的Body ,控制不记录大文件的情况 ，先写死的
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if r.Body != nil && r.Body != http.NoBody && contentLength < (global.GCONFIG_RECORD_MAX_BODY_LENGTH) {
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bodyByte, _ = io.ReadAll(r.Body)
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// 把刚刚读出来的再写进去，不然后面解析表单数据就解析不到了
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r.Body = io.NopCloser(bytes.NewBuffer(bodyByte))
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}
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cookies, _ := json.Marshal(r.Cookies())
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header, _ := json.Marshal(r.Header)
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// 取出客户IP
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ipErr, clientIP, clientPort := waf.getClientIP(r, strings.Split(global.GCONFIG_RECORD_PROXY_HEADER, ",")...)
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if ipErr != nil {
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zlog.Error("get client error", ipErr.Error())
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return
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}
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region := utils.GetCountry(clientIP)
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datetimeNow := time.Now()
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currentDay, _ := strconv.Atoi(datetimeNow.Format("20060102"))
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weblogbean := innerbean.WebLog{
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HOST: r.Host,
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URL: r.RequestURI,
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REFERER: r.Referer(),
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USER_AGENT: r.UserAgent(),
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METHOD: r.Method,
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HEADER: string(header),
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COUNTRY: region[0],
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PROVINCE: region[2],
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CITY: region[3],
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SRC_IP: clientIP,
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SRC_PORT: clientPort,
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CREATE_TIME: datetimeNow.Format("2006-01-02 15:04:05"),
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UNIX_ADD_TIME: datetimeNow.UnixNano() / 1e6,
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CONTENT_LENGTH: contentLength,
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COOKIES: string(cookies),
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BODY: string(bodyByte),
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REQ_UUID: uuid.NewV4().String(),
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USER_CODE: global.GWAF_USER_CODE,
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HOST_CODE: "",
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TenantId: global.GWAF_TENANT_ID,
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RULE: "",
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ACTION: "通过",
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Day: currentDay,
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STATUS: "禁止访问",
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STATUS_CODE: 403,
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TASK_FLAG: 1,
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RISK_LEVEL: 1, //危险等级
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GUEST_IDENTIFICATION: "未解析域名", //访客身份识别
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TimeSpent: 0,
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}
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//记录响应body
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weblogbean.RES_BODY = string(resBytes)
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weblogbean.ACTION = "禁止"
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global.GQEQUE_LOG_DB.Enqueue(weblogbean)
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}
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}
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func (waf *WafEngine) getClientIP(r *http.Request, headers ...string) (error, string, string) {
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for _, header := range headers {
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ip := r.Header.Get(header)
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if ip != "" {
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// 处理可能的多个 IP 地址，以逗号分隔，取第一个有效的
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ips := strings.Split(ip, ",")
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trimmedIP := strings.TrimSpace(ips[0])
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if utils.IsValidIPv4(trimmedIP) {
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return nil, trimmedIP, "0"
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}
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return errors.New("invalid IPv4 address from header: " + header + " value:" + ip), "", ""
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}
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}
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// 如果没有找到，使用 r.RemoteAddr
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ip, port, err := net.SplitHostPort(r.RemoteAddr)
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if err != nil {
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return err, "", ""
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}
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if !utils.IsValidIPv4(ip) {
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return errors.New("invalid IPv4 address from RemoteAddr" + " value:" + ip), "", ""
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}
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return nil, ip, port
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}
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func EchoErrorInfo(w http.ResponseWriter, r *http.Request, weblogbean innerbean.WebLog, ruleName string, blockInfo string) {
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go func() {
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//发送推送消息
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global.GQEQUE_MESSAGE_DB.Enqueue(innerbean.RuleMessageInfo{
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BaseMessageInfo: innerbean.BaseMessageInfo{OperaType: "命中保护规则", Server: global.GWAF_CUSTOM_SERVER_NAME},
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Domain: weblogbean.HOST,
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RuleInfo: ruleName,
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Ip: fmt.Sprintf("%s (%s)", weblogbean.SRC_IP, utils.GetCountry(weblogbean.SRC_IP)),
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})
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}()
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resBytes := []byte("<html><head><title>您的访问被阻止</title></head><body><center><h1>" + blockInfo + "</h1> <br> 访问识别码：<h3>" + weblogbean.REQ_UUID + "</h3></center></body> </html>")
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w.WriteHeader(403)
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_, err := w.Write(resBytes)
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if err != nil {
|
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zlog.Debug("write fail:", zap.Any("", err))
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return
|
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}
|
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datetimeNow := time.Now()
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weblogbean.TimeSpent = datetimeNow.UnixNano()/1e6 - weblogbean.UNIX_ADD_TIME
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//记录响应body
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weblogbean.RES_BODY = string(resBytes)
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weblogbean.RULE = ruleName
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weblogbean.ACTION = "阻止"
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weblogbean.STATUS = "阻止访问"
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weblogbean.STATUS_CODE = 403
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weblogbean.TASK_FLAG = 1
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weblogbean.GUEST_IDENTIFICATION = "可疑用户"
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global.GQEQUE_LOG_DB.Enqueue(weblogbean)
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}
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func (waf *WafEngine) errorResponse() func(http.ResponseWriter, *http.Request, error) {
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return func(w http.ResponseWriter, req *http.Request, err error) {
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zlog.Error("服务不可用 response:", zap.Any("err", err.Error()))
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resBytes := []byte("<html><head><title>服务不可用</title></head><body><center><h1>服务不可用</h1> <br><h3></h3></center></body> </html>")
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w.WriteHeader(http.StatusServiceUnavailable)
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if _, writeErr := w.Write(resBytes); writeErr != nil {
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zlog.Debug("write fail:", zap.Any("err", writeErr))
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return
|
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}
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return
|
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}
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}
|
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func (waf *WafEngine) modifyResponse() func(*http.Response) error {
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return func(resp *http.Response) error {
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resp.Header.Set("WAF", "SamWAF")
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resp.Header.Set("Server", "SamWAFServer")
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resp.Header.Set("X-Xss-Protection", "1; mode=block")
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r := resp.Request
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if weblogfrist, ok := r.Context().Value("weblog").(innerbean.WebLog); ok {
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fmt.Sprintf("weblogfrist: %v", weblogfrist)
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weblogfrist.ACTION = "放行"
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weblogfrist.STATUS = resp.Status
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weblogfrist.STATUS_CODE = resp.StatusCode
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host := resp.Request.Host
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if !strings.Contains(host, ":") {
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// 检查请求是否使用了HTTPS
|
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if resp.Request.TLS != nil {
|
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// 请求使用了HTTPS
|
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host = host + ":443"
|
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} else {
|
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// 请求使用了HTTP
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host = host + ":80"
|
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}
|
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}
|
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//检测是否是不检测端口的情况
|
|
if target, ok := waf.HostTargetNoPort[utils.GetPureDomain(host)]; ok {
|
|
host = target
|
|
}
|
|
ldpFlag := false
|
|
//隐私保护（局部）
|
|
for i := 0; i < len(waf.HostTarget[host].LdpUrlLists); i++ {
|
|
if (waf.HostTarget[host].LdpUrlLists[i].CompareType == "等于" && waf.HostTarget[host].LdpUrlLists[i].Url == resp.Request.RequestURI) ||
|
|
(waf.HostTarget[host].LdpUrlLists[i].CompareType == "前缀匹配" && strings.HasPrefix(resp.Request.RequestURI, waf.HostTarget[host].LdpUrlLists[i].Url)) ||
|
|
(waf.HostTarget[host].LdpUrlLists[i].CompareType == "后缀匹配" && strings.HasSuffix(resp.Request.RequestURI, waf.HostTarget[host].LdpUrlLists[i].Url)) ||
|
|
(waf.HostTarget[host].LdpUrlLists[i].CompareType == "包含匹配" && strings.Contains(resp.Request.RequestURI, waf.HostTarget[host].LdpUrlLists[i].Url)) {
|
|
|
|
ldpFlag = true
|
|
break
|
|
}
|
|
}
|
|
//隐私保护（局部）
|
|
for i := 0; i < len(waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists); i++ {
|
|
if (waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].CompareType == "等于" && waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].Url == resp.Request.RequestURI) ||
|
|
(waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].CompareType == "前缀匹配" && strings.HasPrefix(resp.Request.RequestURI, waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].Url)) ||
|
|
(waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].CompareType == "后缀匹配" && strings.HasSuffix(resp.Request.RequestURI, waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].Url)) ||
|
|
(waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].CompareType == "包含匹配" && strings.Contains(resp.Request.RequestURI, waf.HostTarget[global.GWAF_GLOBAL_HOST_NAME].LdpUrlLists[i].Url)) {
|
|
|
|
ldpFlag = true
|
|
break
|
|
}
|
|
}
|
|
if ldpFlag == true {
|
|
orgContentBytes, _ := waf.getOrgContent(resp)
|
|
newPayload := []byte("" + utils.DeSenText(string(orgContentBytes)))
|
|
finalCompressBytes, _ := waf.compressContent(resp, newPayload)
|
|
|
|
resp.Body = io.NopCloser(bytes.NewBuffer(finalCompressBytes))
|
|
// head 修改追加内容
|
|
resp.ContentLength = int64(len(finalCompressBytes))
|
|
resp.Header.Set("Content-Length", strconv.FormatInt(int64(len(finalCompressBytes)), 10))
|
|
}
|
|
//返回内容的类型
|
|
respContentType := resp.Header.Get("Content-Type")
|
|
respContentType = strings.Replace(respContentType, "; charset=utf-8", "", -1)
|
|
contentType := ""
|
|
//JS情况
|
|
if respContentType == "application/javascript" {
|
|
contentType = "js"
|
|
}
|
|
//CSS情况
|
|
if respContentType == "text/css" {
|
|
contentType = "css"
|
|
}
|
|
//图片情况
|
|
if respContentType == "image/jpeg" || respContentType == "image/png" ||
|
|
respContentType == "image/gif" || respContentType == "image/x-icon" {
|
|
contentType = "img"
|
|
}
|
|
//文本资源
|
|
if respContentType == "text/html" || respContentType == "application/html" ||
|
|
respContentType == "application/json" || respContentType == "application/xml" {
|
|
contentType = "text"
|
|
}
|
|
//记录静态日志
|
|
isStaticAssist := false
|
|
isText := false
|
|
switch contentType {
|
|
case "js":
|
|
isStaticAssist = true
|
|
break
|
|
case "css":
|
|
isStaticAssist = true
|
|
break
|
|
case "img":
|
|
isStaticAssist = true
|
|
break
|
|
case "text":
|
|
isText = true
|
|
break
|
|
default:
|
|
/*weblogbean.ACTION = "放行"
|
|
global.GQEQUE_LOG_DB.PushBack(weblogbean)*/
|
|
}
|
|
|
|
//记录响应body
|
|
if isText && resp.Body != nil && resp.Body != http.NoBody && global.GCONFIG_RECORD_RESP == 1 {
|
|
|
|
//编码转换，自动检测网页编码
|
|
orgContentBytes, _ := waf.getOrgContent(resp)
|
|
finalCompressBytes, _ := waf.compressContent(resp, orgContentBytes)
|
|
resp.Body = io.NopCloser(bytes.NewBuffer(finalCompressBytes))
|
|
|
|
// head 修改追加内容
|
|
resp.ContentLength = int64(len(finalCompressBytes))
|
|
resp.Header.Set("Content-Length", strconv.FormatInt(int64(len(finalCompressBytes)), 10))
|
|
if resp.ContentLength < global.GCONFIG_RECORD_MAX_RES_BODY_LENGTH {
|
|
weblogfrist.RES_BODY = string(orgContentBytes)
|
|
}
|
|
}
|
|
|
|
if !isStaticAssist {
|
|
datetimeNow := time.Now()
|
|
weblogfrist.TimeSpent = datetimeNow.UnixNano()/1e6 - weblogfrist.UNIX_ADD_TIME
|
|
weblogfrist.ACTION = "放行"
|
|
weblogfrist.STATUS = resp.Status
|
|
weblogfrist.STATUS_CODE = resp.StatusCode
|
|
weblogfrist.TASK_FLAG = 1
|
|
if global.GWAF_RUNTIME_RECORD_LOG_TYPE == "all" {
|
|
if waf.HostTarget[host].Host.EXCLUDE_URL_LOG == "" {
|
|
global.GQEQUE_LOG_DB.Enqueue(weblogfrist)
|
|
} else {
|
|
lines := strings.Split(waf.HostTarget[host].Host.EXCLUDE_URL_LOG, "\n")
|
|
isRecordLog := true
|
|
// 检查每一行
|
|
for _, line := range lines {
|
|
if strings.HasPrefix(weblogfrist.URL, line) {
|
|
isRecordLog = false
|
|
}
|
|
}
|
|
if isRecordLog {
|
|
global.GQEQUE_LOG_DB.Enqueue(weblogfrist)
|
|
}
|
|
}
|
|
} else if global.GWAF_RUNTIME_RECORD_LOG_TYPE == "abnormal" && weblogfrist.ACTION != "放行" {
|
|
global.GQEQUE_LOG_DB.Enqueue(weblogfrist)
|
|
}
|
|
|
|
}
|
|
} else {
|
|
fmt.Println("weblog not found")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// 返回内容前依据情况进行返回压缩数据
|
|
func (waf *WafEngine) compressContent(res *http.Response, inputBytes []byte) (respBytes []byte, err error) {
|
|
|
|
switch res.Header.Get("Content-Encoding") {
|
|
case "gzip":
|
|
respBytes, err = utils.GZipEncode(inputBytes)
|
|
case "deflate":
|
|
respBytes, err = utils.DeflateEncode(inputBytes)
|
|
default:
|
|
respBytes = inputBytes
|
|
}
|
|
return
|
|
}
|
|
|
|
// 获取原始内容
|
|
func (waf *WafEngine) getOrgContent(resp *http.Response) (cntBytes []byte, err error) {
|
|
var bodyReader io.Reader
|
|
switch resp.Header.Get("Content-Encoding") {
|
|
case "gzip":
|
|
bodyReader, err = gzip.NewReader(resp.Body)
|
|
case "deflate":
|
|
bodyReader = flate.NewReader(resp.Body)
|
|
default:
|
|
bodyReader = resp.Body
|
|
}
|
|
newBodyReader := bufio.NewReader(bodyReader)
|
|
//使用peek读取十分关键，只是偷看一下，不会移动读取位置，否则其他地方就没法读取了
|
|
var currentEncoding encoding.Encoding
|
|
bytes, err := newBodyReader.Peek(1024)
|
|
if err != nil {
|
|
currentEncoding = unicode.UTF8
|
|
} else {
|
|
currentEncoding, _, _ = charset.DetermineEncoding(bytes, "")
|
|
}
|
|
reader := transform.NewReader(newBodyReader, currentEncoding.NewDecoder())
|
|
resbodyByte, err := io.ReadAll(reader)
|
|
if err != nil {
|
|
zlog.Info("error", err)
|
|
return nil, err
|
|
}
|
|
return resbodyByte, nil
|
|
}
|
|
func (waf *WafEngine) StartWaf() {
|
|
|
|
waf.EngineCurrentStatus = 1
|
|
var hosts []model.Hosts
|
|
//是否有初始化全局保护
|
|
global.GWAF_LOCAL_DB.Where("global_host = ?", 1).Find(&hosts)
|
|
if hosts != nil && len(hosts) == 0 {
|
|
//初始化全局保护
|
|
var wafGlobalHost = &model.Hosts{
|
|
BaseOrm: baseorm.BaseOrm{
|
|
USER_CODE: global.GWAF_USER_CODE,
|
|
Tenant_ID: global.GWAF_TENANT_ID,
|
|
CREATE_TIME: customtype.JsonTime(time.Now()),
|
|
UPDATE_TIME: customtype.JsonTime(time.Now()),
|
|
},
|
|
Code: uuid.NewV4().String(),
|
|
Host: "全局网站",
|
|
Port: 0,
|
|
Ssl: 0,
|
|
GUARD_STATUS: 0,
|
|
REMOTE_SYSTEM: "",
|
|
REMOTE_APP: "",
|
|
Remote_host: "",
|
|
Remote_port: 0,
|
|
Certfile: "",
|
|
Keyfile: "",
|
|
REMARKS: "",
|
|
GLOBAL_HOST: 1,
|
|
START_STATUS: 0,
|
|
UnrestrictedPort: 0,
|
|
}
|
|
global.GWAF_LOCAL_DB.Create(wafGlobalHost)
|
|
}
|
|
|
|
//初始化步骤[加载ip数据库]
|
|
// 从嵌入的文件中读取内容
|
|
|
|
//global.GCACHE_IP_CBUFF = main.Ip2regionBytes
|
|
|
|
//第一步 检测合法性并加入到全局
|
|
waf.LoadAllHost()
|
|
|
|
wafSysLog := &model.WafSysLog{
|
|
BaseOrm: baseorm.BaseOrm{
|
|
Id: uuid.NewV4().String(),
|
|
USER_CODE: global.GWAF_USER_CODE,
|
|
Tenant_ID: global.GWAF_TENANT_ID,
|
|
CREATE_TIME: customtype.JsonTime(time.Now()),
|
|
UPDATE_TIME: customtype.JsonTime(time.Now()),
|
|
},
|
|
OpType: "信息",
|
|
OpContent: "WAF启动",
|
|
}
|
|
global.GQEQUE_LOG_DB.Enqueue(wafSysLog)
|
|
|
|
waf.StartAllProxyServer()
|
|
}
|
|
|
|
// 关闭waf
|
|
func (waf *WafEngine) CloseWaf() {
|
|
defer func() {
|
|
e := recover()
|
|
if e != nil { // 捕获该协程的panic 111111
|
|
zlog.Debug("关闭 recover ", e)
|
|
}
|
|
}()
|
|
wafSysLog := &model.WafSysLog{
|
|
BaseOrm: baseorm.BaseOrm{
|
|
Id: uuid.NewV4().String(),
|
|
USER_CODE: global.GWAF_USER_CODE,
|
|
Tenant_ID: global.GWAF_TENANT_ID,
|
|
CREATE_TIME: customtype.JsonTime(time.Now()),
|
|
UPDATE_TIME: customtype.JsonTime(time.Now()),
|
|
},
|
|
OpType: "信息",
|
|
OpContent: "WAF关闭",
|
|
}
|
|
global.GQEQUE_LOG_DB.Enqueue(wafSysLog)
|
|
waf.EngineCurrentStatus = 0
|
|
|
|
waf.StopAllProxyServer()
|
|
//重置信息
|
|
waf.HostTarget = map[string]*wafenginmodel.HostSafe{}
|
|
waf.HostCode = map[string]string{}
|
|
waf.HostTargetNoPort = map[string]string{}
|
|
waf.ServerOnline = map[int]innerbean.ServerRunTime{}
|
|
waf.AllCertificate = map[int]map[string]*tls.Certificate{}
|
|
|
|
}
|
|
|
|
// 加载全部host
|
|
func (waf *WafEngine) LoadAllHost() {
|
|
//重新查询
|
|
var hosts []model.Hosts
|
|
global.GWAF_LOCAL_DB.Find(&hosts)
|
|
for i := 0; i < len(hosts); i++ {
|
|
waf.LoadHost(hosts[i])
|
|
}
|
|
}
|
|
|
|
// 加载指定host
|
|
func (waf *WafEngine) LoadHost(inHost model.Hosts) innerbean.ServerRunTime {
|
|
|
|
//检测https
|
|
if inHost.Ssl == 1 {
|
|
cert, err := tls.X509KeyPair([]byte(inHost.Certfile), []byte(inHost.Keyfile))
|
|
if err != nil {
|
|
zlog.Warn("Cannot find %s cert & key file. Error is: %s\n", inHost.Host, err)
|
|
return innerbean.ServerRunTime{}
|
|
|
|
}
|
|
mm, ok := waf.AllCertificate[inHost.Port] //[hosts[i].Host]
|
|
if !ok {
|
|
mm = make(map[string]*tls.Certificate)
|
|
waf.AllCertificate[inHost.Port] = mm
|
|
}
|
|
waf.AllCertificate[inHost.Port][inHost.Host] = &cert
|
|
}
|
|
_, ok := waf.ServerOnline[inHost.Port]
|
|
if ok == false && inHost.GLOBAL_HOST == 0 {
|
|
if inHost.START_STATUS == 0 {
|
|
waf.ServerOnline[inHost.Port] = innerbean.ServerRunTime{
|
|
ServerType: utils.GetServerByHosts(inHost),
|
|
Port: inHost.Port,
|
|
Status: 1,
|
|
}
|
|
} else {
|
|
delete(waf.ServerOnline, inHost.Port)
|
|
}
|
|
|
|
}
|
|
//加载主机对于的规则
|
|
ruleHelper := &utils.RuleHelper{}
|
|
ruleHelper.InitRuleEngine()
|
|
//查询规则
|
|
var vcnt int
|
|
global.GWAF_LOCAL_DB.Model(&model.Rules{}).Where("host_code = ? and rule_status<>999",
|
|
inHost.Code).Select("sum(rule_version) as vcnt").Row().Scan(&vcnt)
|
|
zlog.Debug("主机host" + inHost.Code + " 版本" + strconv.Itoa(vcnt))
|
|
var ruleconfigs []model.Rules
|
|
if vcnt > 0 {
|
|
global.GWAF_LOCAL_DB.Where("host_code = ?and rule_status<>999", inHost.Code).Find(&ruleconfigs)
|
|
ruleHelper.LoadRules(ruleconfigs)
|
|
}
|
|
//查询ip限流(应该针对一个网址只有一个)
|
|
var anticcBean model.AntiCC
|
|
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Limit(1).Find(&anticcBean)
|
|
|
|
//初始化插件-ip计数器
|
|
var pluginIpRateLimiter *webplugin.IPRateLimiter
|
|
if anticcBean.Id != "" {
|
|
pluginIpRateLimiter = webplugin.NewIPRateLimiter(rate.Limit(anticcBean.Rate), anticcBean.Limit)
|
|
}
|
|
|
|
//查询ip白名单
|
|
var ipwhitelist []model.IPAllowList
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&ipwhitelist)
|
|
|
|
//查询url白名单
|
|
var urlwhitelist []model.URLAllowList
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&urlwhitelist)
|
|
|
|
//查询ip黑名单
|
|
var ipblocklist []model.IPBlockList
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&ipblocklist)
|
|
|
|
//查询url白名单
|
|
var urlblocklist []model.URLBlockList
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&urlblocklist)
|
|
|
|
//查询url隐私保护
|
|
var ldpurls []model.LDPUrl
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&ldpurls)
|
|
|
|
//查询负载均衡
|
|
var loadBalanceList []model.LoadBalance
|
|
global.GWAF_LOCAL_DB.Where("host_code=? ", inHost.Code).Find(&loadBalanceList)
|
|
//初始化主机host
|
|
hostsafe := &wafenginmodel.HostSafe{
|
|
LoadBalanceRuntime: &wafenginmodel.LoadBalanceRuntime{
|
|
CurrentProxyIndex: 0,
|
|
RevProxies: []*wafproxy.ReverseProxy{},
|
|
WeightRoundRobinBalance: &loadbalance.WeightRoundRobinBalance{},
|
|
IpHashBalance: loadbalance.NewConsistentHashBalance(nil),
|
|
},
|
|
LoadBalanceLists: loadBalanceList,
|
|
Rule: ruleHelper,
|
|
TargetHost: inHost.Remote_host + ":" + strconv.Itoa(inHost.Remote_port),
|
|
RuleData: ruleconfigs,
|
|
RuleVersionSum: vcnt,
|
|
Host: inHost,
|
|
PluginIpRateLimiter: pluginIpRateLimiter,
|
|
IPWhiteLists: ipwhitelist,
|
|
UrlWhiteLists: urlwhitelist,
|
|
LdpUrlLists: ldpurls,
|
|
IPBlockLists: ipblocklist,
|
|
UrlBlockLists: urlblocklist,
|
|
}
|
|
hostsafe.Mux.Lock()
|
|
defer hostsafe.Mux.Unlock()
|
|
//赋值到白名单里面
|
|
waf.HostTarget[inHost.Host+":"+strconv.Itoa(inHost.Port)] = hostsafe
|
|
//赋值到对照表里面
|
|
waf.HostCode[inHost.Code] = inHost.Host + ":" + strconv.Itoa(inHost.Port)
|
|
//如果是不限制端口的情况
|
|
if inHost.UnrestrictedPort == 1 {
|
|
zlog.Debug("来源端口宽松模式")
|
|
waf.HostTargetNoPort[inHost.Host] = inHost.Host + ":" + strconv.Itoa(inHost.Port)
|
|
} else {
|
|
if _, ok := waf.HostTargetNoPort[inHost.Host]; ok {
|
|
zlog.Debug("来源端口严苛模式")
|
|
delete(waf.HostTargetNoPort, inHost.Host)
|
|
}
|
|
|
|
}
|
|
|
|
return waf.ServerOnline[inHost.Port]
|
|
}
|
|
|
|
/*
|
|
*
|
|
移除主机
|
|
*/
|
|
func (waf *WafEngine) RemoveHost(host model.Hosts, isSslChange bool) {
|
|
/*//主机情况
|
|
HostTarget map[string]*wafenginmodel.HostSafe
|
|
//主机和code的关系
|
|
HostCode map[string]string
|
|
ServerOnline map[int]innerbean.ServerRunTime
|
|
|
|
//所有证书情况 对应端口 可能多个端口都是https 443，或者其他非标准端口也要实现https证书
|
|
AllCertificate map[int]map[string]*tls.Certificate*/
|
|
//1.如果这个port里面没有了主机 那可以直接停掉服务
|
|
//2.除了第一个情况之外的，把所有他的主机信息和关联信息都干掉
|
|
|
|
if waf_service.WafHostServiceApp.CheckAvailablePortExistApi(host.Port) == 0 || isSslChange {
|
|
zlog.Debug("准备移除这个端口下所有信息")
|
|
// a.移除证书数据
|
|
_, ok := waf.AllCertificate[host.Port]
|
|
if ok {
|
|
delete(waf.AllCertificate, host.Port)
|
|
}
|
|
//b.移除对照关系
|
|
delete(waf.HostCode, host.Code)
|
|
//c.移除主机保护信息
|
|
delete(waf.HostTarget, host.Host+":"+strconv.Itoa(host.Port))
|
|
//d.暂停服务 并 移除服务信息
|
|
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
|
defer cancel()
|
|
|
|
_, svrOk := waf.ServerOnline[host.Port]
|
|
if svrOk {
|
|
err := waf.ServerOnline[host.Port].Svr.Shutdown(ctx)
|
|
if err != nil {
|
|
zlog.Error("shutting down: " + err.Error())
|
|
} else {
|
|
zlog.Info("shutdown processed successfully port" + strconv.Itoa(host.Port))
|
|
}
|
|
delete(waf.ServerOnline, host.Port)
|
|
}
|
|
|
|
} else {
|
|
zlog.Debug("准备移除没用的主机信息")
|
|
// a.移除某个端口下的证书数据
|
|
_, ok := waf.AllCertificate[host.Port][host.Host]
|
|
if ok {
|
|
delete(waf.AllCertificate[host.Port], host.Host)
|
|
}
|
|
//b.移除对照关系
|
|
delete(waf.HostCode, host.Code)
|
|
//c.移除主机保护信息
|
|
delete(waf.HostTarget, host.Host+":"+strconv.Itoa(host.Port))
|
|
}
|
|
}
|
|
|
|
// 清除代理
|
|
func (waf *WafEngine) ClearProxy(hostCode string) {
|
|
var list []model.LoadBalance
|
|
global.GWAF_LOCAL_DB.Where("host_code = ? ", hostCode).Find(&list)
|
|
if waf.HostTarget[waf.HostCode[hostCode]] != nil {
|
|
waf.HostTarget[waf.HostCode[hostCode]].Mux.Lock()
|
|
defer waf.HostTarget[waf.HostCode[hostCode]].Mux.Unlock()
|
|
waf.HostTarget[waf.HostCode[hostCode]].LoadBalanceRuntime.RevProxies = []*wafproxy.ReverseProxy{}
|
|
waf.HostTarget[waf.HostCode[hostCode]].LoadBalanceRuntime.WeightRoundRobinBalance = &loadbalance.WeightRoundRobinBalance{}
|
|
waf.HostTarget[waf.HostCode[hostCode]].LoadBalanceRuntime.IpHashBalance = loadbalance.NewConsistentHashBalance(nil)
|
|
waf.HostTarget[waf.HostCode[hostCode]].LoadBalanceLists = list
|
|
}
|
|
}
|
|
|
|
// 开启所有代理
|
|
func (waf *WafEngine) StartAllProxyServer() {
|
|
|
|
for _, v := range waf.ServerOnline {
|
|
waf.StartProxyServer(v)
|
|
}
|
|
waf.EnumAllPortProxyServer()
|
|
|
|
waf.ReLoadSensitive()
|
|
}
|
|
|
|
// 罗列端口
|
|
func (waf *WafEngine) EnumAllPortProxyServer() {
|
|
onlinePorts := ""
|
|
for _, v := range waf.ServerOnline {
|
|
onlinePorts = strconv.Itoa(v.Port) + "," + onlinePorts
|
|
}
|
|
global.GWAF_RUNTIME_CURRENT_WEBPORT = onlinePorts
|
|
}
|
|
|
|
func (waf *WafEngine) StartProxyServer(innruntime innerbean.ServerRunTime) {
|
|
if innruntime.Status == 0 {
|
|
//启动完成的就不进这里了
|
|
return
|
|
}
|
|
if innruntime.ServerType == "" {
|
|
//如果是空的就不进行了
|
|
return
|
|
}
|
|
go func(innruntime innerbean.ServerRunTime) {
|
|
|
|
if (innruntime.ServerType) == "https" {
|
|
|
|
defer func() {
|
|
e := recover()
|
|
if e != nil { // 捕获该协程的panic 111111
|
|
zlog.Warn("https recover ", e)
|
|
}
|
|
}()
|
|
svr := &http.Server{
|
|
Addr: ":" + strconv.Itoa(innruntime.Port),
|
|
Handler: waf,
|
|
TLSConfig: &tls.Config{
|
|
NameToCertificate: make(map[string]*tls.Certificate, 0),
|
|
},
|
|
}
|
|
serclone := waf.ServerOnline[innruntime.Port]
|
|
serclone.Svr = svr
|
|
serclone.Status = 0
|
|
waf.ServerOnline[innruntime.Port] = serclone
|
|
|
|
svr.TLSConfig.NameToCertificate = waf.AllCertificate[innruntime.Port]
|
|
svr.TLSConfig.GetCertificate = func(clientInfo *tls.ClientHelloInfo) (*tls.Certificate, error) {
|
|
if x509Cert, ok := svr.TLSConfig.NameToCertificate[clientInfo.ServerName]; ok {
|
|
return x509Cert, nil
|
|
}
|
|
return nil, errors.New("config error")
|
|
}
|
|
zlog.Info("启动HTTPS 服务器" + strconv.Itoa(innruntime.Port))
|
|
err := svr.ListenAndServeTLS("", "")
|
|
if err == http.ErrServerClosed {
|
|
zlog.Error("[HTTPServer] https server has been close, cause:[%v]", err)
|
|
} else {
|
|
//TODO 记录如果https 端口被占用的情况 记录日志 且应该推送websocket
|
|
wafSysLog := model.WafSysLog{
|
|
BaseOrm: baseorm.BaseOrm{
|
|
Id: uuid.NewV4().String(),
|
|
USER_CODE: global.GWAF_USER_CODE,
|
|
Tenant_ID: global.GWAF_TENANT_ID,
|
|
CREATE_TIME: customtype.JsonTime(time.Now()),
|
|
UPDATE_TIME: customtype.JsonTime(time.Now()),
|
|
},
|
|
OpType: "系统运行错误",
|
|
OpContent: "HTTPS端口被占用: " + strconv.Itoa(innruntime.Port) + ",请检查",
|
|
}
|
|
global.GQEQUE_LOG_DB.Enqueue(wafSysLog)
|
|
zlog.Error("[HTTPServer] https server start fail, cause:[%v]", err)
|
|
}
|
|
zlog.Info("server https shutdown")
|
|
|
|
} else {
|
|
defer func() {
|
|
e := recover()
|
|
if e != nil { // 捕获该协程的panic 111111
|
|
zlog.Warn("http recover ", e)
|
|
}
|
|
}()
|
|
svr := &http.Server{
|
|
Addr: ":" + strconv.Itoa(innruntime.Port),
|
|
Handler: waf,
|
|
}
|
|
serclone := waf.ServerOnline[innruntime.Port]
|
|
serclone.Svr = svr
|
|
serclone.Status = 0
|
|
waf.ServerOnline[innruntime.Port] = serclone
|
|
|
|
zlog.Info("启动HTTP 服务器" + strconv.Itoa(innruntime.Port))
|
|
err := svr.ListenAndServe()
|
|
if err == http.ErrServerClosed {
|
|
zlog.Warn("[HTTPServer] http server has been close, cause:[%v]", err)
|
|
} else {
|
|
//TODO 记录如果http 端口被占用的情况 记录日志 且应该推送websocket
|
|
wafSysLog := model.WafSysLog{
|
|
BaseOrm: baseorm.BaseOrm{
|
|
Id: uuid.NewV4().String(),
|
|
USER_CODE: global.GWAF_USER_CODE,
|
|
Tenant_ID: global.GWAF_TENANT_ID,
|
|
CREATE_TIME: customtype.JsonTime(time.Now()),
|
|
UPDATE_TIME: customtype.JsonTime(time.Now()),
|
|
},
|
|
OpType: "系统运行错误",
|
|
OpContent: "HTTP端口被占用: " + strconv.Itoa(innruntime.Port) + ",请检查",
|
|
}
|
|
global.GQEQUE_LOG_DB.Enqueue(wafSysLog)
|
|
zlog.Error("[HTTPServer] http server start fail, cause:[%v]", err)
|
|
}
|
|
zlog.Info("server http shutdown")
|
|
}
|
|
|
|
}(innruntime)
|
|
}
|
|
|
|
// 关闭所有代理服务
|
|
func (waf *WafEngine) StopAllProxyServer() {
|
|
for _, v := range waf.ServerOnline {
|
|
waf.StopProxyServer(v)
|
|
}
|
|
}
|
|
|
|
// 关闭指定代理服务
|
|
func (waf *WafEngine) StopProxyServer(v innerbean.ServerRunTime) {
|
|
if v.Svr != nil {
|
|
v.Svr.Close()
|
|
}
|
|
}
|
|
func (waf *WafEngine) ReLoadSensitive() {
|
|
//敏感词处理
|
|
var sensitiveList []model.Sensitive
|
|
global.GWAF_LOCAL_DB.Find(&sensitiveList)
|
|
//敏感词
|
|
waf.Sensitive = sensitiveList
|
|
if len(sensitiveList) == 0 {
|
|
return
|
|
}
|
|
// 提取 content 字段并转换为 [][]rune
|
|
var keywords [][]rune
|
|
for _, sensitive := range waf.Sensitive {
|
|
// 将 content 转换为 []rune 并追加到 keywords
|
|
keywords = append(keywords, []rune(sensitive.Content))
|
|
}
|
|
|
|
m := new(goahocorasick.Machine)
|
|
err := m.Build(keywords)
|
|
if err != nil {
|
|
zlog.Error("load sensitive error", err)
|
|
return
|
|
}
|
|
waf.SensitiveManager = m
|
|
|
|
}
|