mirror of
https://gitee.com/samwaf/SamWaf.git
synced 2025-12-06 14:59:18 +08:00
995 lines
33 KiB
Go
995 lines
33 KiB
Go
package wafenginecore
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import (
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"SamWaf/common/domaintool"
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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/utils"
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"SamWaf/wafenginecore/loadbalance"
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"SamWaf/wafenginecore/wafhttpcore"
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"SamWaf/wafproxy"
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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/samwafgo/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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"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"
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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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//更多域名和配置防护关系 (key:主机域名,value:主机的hostCode) 一个主机绑定很多域名的情况
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HostTargetMoreDomain 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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AllCertificate AllCertificate //所有证书
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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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innerLogName := "WafEngine ServeHTTP"
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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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targetCode := ""
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//检测是否是不检测端口的情况
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if targetHost, ok := waf.HostTargetNoPort[utils.GetPureDomain(host)]; ok {
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host = targetHost
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}
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findHost := false
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target, ok := waf.HostTarget[host]
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if !ok {
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// 看看是不是泛域名情况
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target, ok = waf.HostTarget[domaintool.MaskSubdomain(host)]
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if ok {
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findHost = true
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targetCode = target.Host.Code
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}
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} else {
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targetCode = target.Host.Code
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findHost = true
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}
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if !findHost {
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// 绑定更多域名的信息
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targetCode, ok = waf.HostTargetMoreDomain[host]
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if ok {
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findHost = true
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} else {
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// 看看是不是泛域名情况
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targetCode, ok = waf.HostTargetMoreDomain[domaintool.MaskSubdomain(host)]
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if ok {
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findHost = true
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}
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}
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}
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// 检查域名是否已经注册
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if findHost == true {
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hostTarget := waf.HostTarget[waf.HostCode[targetCode]]
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hostCode := hostTarget.Host.Code
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incrementMonitor(hostCode)
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//检测网站是否已关闭
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if hostTarget.Host.START_STATUS == 1 {
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resBytes := []byte("<html><head><title>网站已关闭</title></head><body><center><h1>当前访问网站已关闭</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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// 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[hostTarget.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 == hostTarget.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 := wafhttpcore.WafHttpCoreUrlEncode(r.RequestURI, 100)
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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: hostCode,
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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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NetSrcIp: utils.GetSourceClientIP(r.RemoteAddr),
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SrcByteBody: bodyByte,
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WebLogVersion: global.GWEBLOG_VERSION,
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Scheme: r.Proto,
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SrcURL: []byte(r.RequestURI),
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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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// 检测是否已经被CC封禁
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ccCacheKey := enums.CACHE_CCVISITBAN_PRE + clientIP
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if global.GCACHE_WAFCACHE.IsKeyExist(ccCacheKey) {
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visitIPError := fmt.Sprintf("当前IP已经被CC封禁，IP:%s 归属地区：%s", clientIP, region)
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global.GQEQUE_MESSAGE_DB.Enqueue(innerbean.OperatorMessageInfo{
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BaseMessageInfo: innerbean.BaseMessageInfo{OperaType: "CC封禁提醒"},
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OperaCnt: visitIPError,
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})
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EchoErrorInfo(w, r, weblogbean, "", "当前IP由于访问频次太高暂时无法访问", hostTarget, waf.HostTarget[waf.HostCode[global.GWAF_GLOBAL_HOST_CODE]], false)
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return
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}
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if host == hostTarget.Host.Host+":80" && !strings.HasPrefix(weblogbean.URL, global.GSSL_HTTP_CHANGLE_PATH) && hostTarget.Host.AutoJumpHTTPS == 1 && hostTarget.Host.Ssl == 1 {
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// 重定向到 HTTPS 版本的 URL
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targetHttpsUrl := fmt.Sprintf("%s%s%s", "https://", r.Host, r.URL.Path)
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if hostTarget.Host.Port != 443 {
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targetHttpsUrl = fmt.Sprintf("%s%s:%d%s", "https://", r.Host, hostTarget.Host.Port, r.URL.Path)
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}
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if r.URL.RawQuery != "" {
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targetHttpsUrl += "?" + r.URL.RawQuery
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}
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zlog.Info(innerLogName, "jump https", targetHttpsUrl)
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http.Redirect(w, r, targetHttpsUrl, int(global.GCONFIG_RECORD_REDIRECT_HTTPS_CODE))
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return
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}
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r.Header.Add("waf_req_uuid", weblogbean.REQ_UUID)
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if hostTarget.Host.GUARD_STATUS == 1 {
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//一系列检测逻辑
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handleBlock := func(checkFunc func(*http.Request, *innerbean.WebLog, url.Values, *wafenginmodel.HostSafe, *wafenginmodel.HostSafe) detection.Result) bool {
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detectionResult := checkFunc(r, &weblogbean, formValues, hostTarget, waf.HostTarget[waf.HostCode[global.GWAF_GLOBAL_HOST_CODE]])
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if detectionResult.IsBlock {
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decrementMonitor(hostCode)
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EchoErrorInfo(w, r, weblogbean, detectionResult.Title, detectionResult.Content, hostTarget, waf.HostTarget[waf.HostCode[global.GWAF_GLOBAL_HOST_CODE]], true)
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return true
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}
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return false
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}
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globalHostSafe := waf.HostTarget[waf.HostCode[global.GWAF_GLOBAL_HOST_CODE]]
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detectionWhiteResult := waf.CheckAllowIP(r, &weblogbean, formValues, hostTarget, globalHostSafe)
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if detectionWhiteResult.JumpGuardResult == false {
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detectionWhiteResult = waf.CheckAllowURL(r, weblogbean, formValues, hostTarget, globalHostSafe)
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}
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if detectionWhiteResult.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(hostTarget.Host.DEFENSE_JSON), &hostDefense)
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if err != nil {
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zlog.Debug("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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//检测OWASP
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if handleBlock(waf.CheckOwasp) {
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return
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}
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}
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}
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//如果正常的流量不记录请求原始包
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if global.GCONFIG_RECORD_ALL_SRC_BYTE_INFO == 0 {
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weblogbean.SrcByteBody = nil
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}
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//基本验证是否开关是否开启
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if hostTarget.Host.IsEnableHttpAuthBase == 1 {
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bHttpAuthBaseResult, sHttpAuthBaseResult := waf.DoHttpAuthBase(hostTarget, w, r)
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if bHttpAuthBaseResult == true {
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// 记录日志
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weblogbean.RES_BODY = sHttpAuthBaseResult
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weblogbean.ACTION = "禁止"
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global.GQEQUE_LOG_DB.Enqueue(weblogbean)
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return
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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(hostTarget.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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// 记录前置校验耗时
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weblogbean.PreCheckCost = time.Now().UnixNano()/1e6 - weblogbean.UNIX_ADD_TIME
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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(), "waf_context", innerbean.WafHttpContextData{
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Weblog: &weblogbean,
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HostCode: hostCode,
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})
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// 代理请求
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waf.ProxyHTTP(w, r, host, remoteUrl, clientIP, ctx, weblogbean, hostTarget)
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decrementMonitor(hostCode)
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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
|
||
GUEST_IDENTIFICATION: "未解析域名", //访客身份识别
|
||
TimeSpent: 0,
|
||
NetSrcIp: utils.GetSourceClientIP(r.RemoteAddr),
|
||
WebLogVersion: global.GWEBLOG_VERSION,
|
||
Scheme: r.Proto,
|
||
SrcURL: []byte(r.RequestURI),
|
||
}
|
||
|
||
//记录响应body
|
||
weblogbean.RES_BODY = string(resBytes)
|
||
weblogbean.ACTION = "禁止"
|
||
global.GQEQUE_LOG_DB.Enqueue(weblogbean)
|
||
}
|
||
}
|
||
func (waf *WafEngine) getClientIP(r *http.Request, headers ...string) (error, string, string) {
|
||
for _, header := range headers {
|
||
ip := r.Header.Get(header)
|
||
if ip != "" {
|
||
// 处理可能的多个 IP 地址，以逗号分隔，取第一个有效的
|
||
ips := strings.Split(ip, ",")
|
||
trimmedIP := strings.TrimSpace(ips[0])
|
||
if utils.IsValidIPv4(trimmedIP) {
|
||
return nil, trimmedIP, "0"
|
||
}
|
||
if utils.IsValidIPv6(ip) {
|
||
return nil, ip, "0"
|
||
}
|
||
return errors.New("invalid IPv4 address from header: " + header + " value:" + ip), "", ""
|
||
}
|
||
}
|
||
|
||
// 如果没有找到，使用 r.RemoteAddr
|
||
ip, port, err := net.SplitHostPort(r.RemoteAddr)
|
||
if err != nil {
|
||
return err, "", ""
|
||
}
|
||
|
||
// 验证 IPv4 地址
|
||
if utils.IsValidIPv4(ip) {
|
||
return nil, ip, port
|
||
}
|
||
|
||
// 如果是 IPv6 地址，进一步检查是否是有效的 IPv6 地址
|
||
if strings.Contains(ip, ":") {
|
||
// 如果是 IPv6 地址，进一步检查是否是有效的 IPv6 地址
|
||
if strings.Contains(ip, ":") {
|
||
if utils.IsValidIPv6(ip) {
|
||
return nil, ip, port
|
||
} else {
|
||
return errors.New("invalid IPv6 address from RemoteAddr: " + ip), "", ""
|
||
}
|
||
}
|
||
}
|
||
|
||
return errors.New("invalid IP address (not IPv4 or IPv6): " + ip), "", ""
|
||
}
|
||
|
||
func (waf *WafEngine) errorResponse() func(http.ResponseWriter, *http.Request, error) {
|
||
return func(w http.ResponseWriter, req *http.Request, err error) {
|
||
|
||
if wafHttpContext, ok := req.Context().Value("waf_context").(innerbean.WafHttpContextData); ok {
|
||
weblogReq := wafHttpContext.Weblog
|
||
|
||
requestInfo := fmt.Sprintf("Method: %s \r\nURL: %s \r\nHeaders: %v", req.Method, req.URL.String(), req.Header)
|
||
zlog.Error("服务不可用 response:", zap.Any("err", err.Error()), zap.String("request_info", requestInfo))
|
||
|
||
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>")
|
||
|
||
weblogReq.STATUS = "Service Unavailable"
|
||
weblogReq.STATUS_CODE = 503
|
||
weblogReq.RES_BODY = fmt.Sprintf("请求相关信息:%v \r\n 错误信息:%v \r\n", requestInfo, err.Error())
|
||
weblogReq.TASK_FLAG = 1
|
||
global.GQEQUE_LOG_DB.Enqueue(weblogReq)
|
||
w.WriteHeader(http.StatusServiceUnavailable)
|
||
if _, writeErr := w.Write(resBytes); writeErr != nil {
|
||
zlog.Debug("write fail:", zap.Any("err", writeErr))
|
||
return
|
||
}
|
||
}
|
||
|
||
return
|
||
}
|
||
}
|
||
func (waf *WafEngine) modifyResponse() func(*http.Response) error {
|
||
return func(resp *http.Response) error {
|
||
resp.Header.Set("X-Xss-Protection", "1; mode=block")
|
||
if global.GCONFIG_RECORD_HIDE_SERVER_HEADER == 1 {
|
||
resp.Header.Del("Server")
|
||
}
|
||
r := resp.Request
|
||
if wafHttpContext, ok := r.Context().Value("waf_context").(innerbean.WafHttpContextData); ok {
|
||
|
||
backendCheckStart := time.Now().UnixNano() / 1e6
|
||
|
||
weblogfrist := wafHttpContext.Weblog
|
||
|
||
host := waf.HostCode[wafHttpContext.HostCode]
|
||
weblogfrist.ACTION = "放行"
|
||
weblogfrist.STATUS = resp.Status
|
||
weblogfrist.STATUS_CODE = resp.StatusCode
|
||
|
||
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)
|
||
|
||
//记录静态日志
|
||
isStaticAssist := utils.IsStaticAssist(respContentType)
|
||
isText := utils.IsContent(respContentType)
|
||
|
||
//记录响应body
|
||
if isText && resp.Body != nil && resp.Body != http.NoBody {
|
||
|
||
//编码转换，自动检测网页编码 resp *http.Response
|
||
orgContentBytes, _ := waf.getOrgContent(resp)
|
||
|
||
if global.GCONFIG_RECORD_RESP == 1 {
|
||
if resp.ContentLength < global.GCONFIG_RECORD_MAX_RES_BODY_LENGTH {
|
||
weblogfrist.RES_BODY = string(orgContentBytes)
|
||
weblogfrist.SrcByteResBody = orgContentBytes
|
||
}
|
||
}
|
||
|
||
//处理敏感词
|
||
if waf.CheckResponseSensitive() {
|
||
//敏感词检测
|
||
matchBodyResult := waf.SensitiveManager.MultiPatternSearch([]rune(string(orgContentBytes)), false)
|
||
if len(matchBodyResult) > 0 {
|
||
sensitive := matchBodyResult[0].CustomData.(model.Sensitive)
|
||
|
||
if sensitive.CheckDirection != "in" {
|
||
weblogfrist.RISK_LEVEL = 1
|
||
if sensitive.Action == "deny" {
|
||
EchoResponseErrorInfo(resp, *weblogfrist, "敏感词检测："+string(matchBodyResult[0].Word), "敏感词内容", waf.HostTarget[host], waf.HostTarget[waf.HostCode[global.GWAF_GLOBAL_HOST_CODE]], true)
|
||
return nil
|
||
|
||
} else {
|
||
words := processSensitiveWords(matchBodyResult, "in")
|
||
weblogfrist.GUEST_IDENTIFICATION = "触发敏感词"
|
||
weblogfrist.RULE = "敏感词检测：" + strings.Join(words, ",")
|
||
for _, word := range words {
|
||
orgContentBytes = bytes.ReplaceAll(orgContentBytes, []byte(word), []byte(global.GWAF_HTTP_SENSITIVE_REPLACE_STRING))
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
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))
|
||
|
||
}
|
||
zlog.Debug("TESTChanllage", weblogfrist.HOST, weblogfrist.URL)
|
||
if !isStaticAssist {
|
||
datetimeNow := time.Now()
|
||
weblogfrist.TimeSpent = datetimeNow.UnixNano()/1e6 - weblogfrist.UNIX_ADD_TIME
|
||
|
||
if strings.HasPrefix(weblogfrist.URL, global.GSSL_HTTP_CHANGLE_PATH) && resp.StatusCode == 404 {
|
||
//如果远端HTTP01不存在挑战验证文件，那么我们映射到走本地再试一下
|
||
|
||
//Challenge /.well-known/acme-challenge/2NKiiETgQdPmmjlM88mH5uo6jM98PrgWwsDslaN8
|
||
urls := strings.Split(weblogfrist.URL, "/")
|
||
if len(urls) == 4 {
|
||
challengeFile := urls[3]
|
||
//检测challengeFile是否合法
|
||
if !utils.IsValidChallengeFile(challengeFile) {
|
||
return nil
|
||
}
|
||
//当前路径 data/vhost/domain code 变量下
|
||
// 需要读取的文件路径
|
||
filePath := utils.GetCurrentDir() + "/data/vhost/" + weblogfrist.HOST_CODE + "/.well-known/acme-challenge/" + challengeFile
|
||
|
||
// 调用读取文件的函数
|
||
content, err := utils.ReadFile(filePath)
|
||
if err != nil {
|
||
zlog.Error("Error reading file: %v", err.Error())
|
||
}
|
||
if content != "" {
|
||
resp.StatusCode = http.StatusOK
|
||
resp.Status = http.StatusText(http.StatusOK)
|
||
resp.Body = io.NopCloser(bytes.NewBuffer([]byte(content)))
|
||
resp.ContentLength = int64(len(content))
|
||
resp.Header.Set("Content-Length", strconv.FormatInt(int64(len(content)), 10))
|
||
|
||
weblogfrist.ACTION = "放行"
|
||
weblogfrist.STATUS = resp.Status
|
||
weblogfrist.STATUS_CODE = resp.StatusCode
|
||
weblogfrist.TASK_FLAG = 1
|
||
weblogfrist.BackendCheckCost = time.Now().UnixNano()/1e6 - backendCheckStart //响应数据处理时间
|
||
global.GQEQUE_LOG_DB.Enqueue(weblogfrist)
|
||
}
|
||
}
|
||
} else {
|
||
weblogfrist.ACTION = "放行"
|
||
weblogfrist.STATUS = resp.Status
|
||
weblogfrist.STATUS_CODE = resp.StatusCode
|
||
weblogfrist.TASK_FLAG = 1
|
||
weblogfrist.BackendCheckCost = time.Now().UnixNano()/1e6 - backendCheckStart //响应数据处理时间
|
||
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, resp.Header.Get("Content-Type"))
|
||
}
|
||
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,
|
||
BindSslId: "",
|
||
AutoJumpHTTPS: 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()
|
||
}
|
||
|
||
// CloseWaf 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 = AllCertificate{
|
||
Mux: sync.Mutex{},
|
||
Map: map[string]*tls.Certificate{},
|
||
}
|
||
}
|
||
|
||
// 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{
|
||
GetCertificate: waf.GetCertificateFunc,
|
||
},
|
||
}
|
||
serclone := waf.ServerOnline[innruntime.Port]
|
||
serclone.Svr = svr
|
||
serclone.Status = 0
|
||
waf.ServerOnline[innruntime.Port] = serclone
|
||
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()
|
||
}
|
||
}
|