初步实现简易爬虫

internal/option.go

@@ -32,6 +32,7 @@ type InputOptions struct {
 	ResumeFrom   string   `long:"resume-from"`
 	URL          string   `short:"u" long:"url" description:"String, input baseurl (separated by commas), e.g.: http://google.com, http://baidu.com"`
 	URLFile      string   `short:"l" long:"list" description:"File, input filename"`
+	Raw          string   `long:"raw" description:"File, input raw request filename"`
 	Offset       int      `long:"offset" description:"Int, wordlist offset"`
 	Limit        int      `long:"limit" description:"Int, wordlist limit, start with offset. e.g.: --offset 1000 --limit 100"`
 	Dictionaries []string `short:"d" long:"dict" description:"Files, dict files, e.g.: -d 1.txt -d 2.txt"`
@@ -77,6 +78,8 @@ type ModeOptions struct {
 	CheckOnly       bool   `long:"check-only" description:"Bool, check only"`
 	Recursive       string `long:"recursive" default:"current.IsDir()" description:"String,custom recursive rule, e.g.: --recursive current.IsDir()"`
 	Depth           int    `long:"depth" default:"0" description:"Int, recursive depth"`
+	Crawl           bool   `long:"crawl" description:"Bool, enable crawl"`
+	CrawlDepth      int    `long:"spider-depth" default:"3" description:"Int, crawl depth"`
 	CheckPeriod     int    `long:"check-period" default:"200" description:"Int, check period when request"`
 	ErrPeriod       int    `long:"error-period" default:"10" description:"Int, check period when error"`
 	BreakThreshold  int    `long:"error-threshold" default:"20" description:"Int, break when the error exceeds the threshold "`
@@ -123,6 +126,7 @@ func (opt *Option) PrepareRunner() (*Runner, error) {
 		CheckPeriod:    opt.CheckPeriod,
 		ErrPeriod:      opt.ErrPeriod,
 		BreakThreshold: opt.BreakThreshold,
+		Crawl:          opt.Crawl,
 	}
 
 	err = pkg.LoadTemplates()

internal/pool.go

@@ -20,13 +20,12 @@ import (
 )
 
 var (
-	CheckRedirect func(string) bool
+	max          = 2147483647
+	maxRedirect  = 3
+	maxCrawl     = 3
+	maxRecursion = 0
 )
 
-var max = 2147483647
-var maxRedirect = 3
-var maxRecuDepth = 0
-
 func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 	pctx, cancel := context.WithCancel(ctx)
 	pool := &Pool{
@@ -35,8 +34,10 @@ func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 		cancel:      cancel,
 		client:      ihttp.NewClient(config.Thread, 2, config.ClientType),
 		baselines:   make(map[int]*pkg.Baseline),
+		urls:        make(map[string]int),
 		tempCh:      make(chan *pkg.Baseline, config.Thread),
 		checkCh:     make(chan sourceType),
+		additionCh:  make(chan *Unit, 100),
 		wg:          sync.WaitGroup{},
 		initwg:      sync.WaitGroup{},
 		reqCount:    1,
@@ -80,7 +81,7 @@ func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 							bl.RedirectURL = "/" + strings.TrimLeft(bl.RedirectURL, "/")
 							bl.RedirectURL = pool.BaseURL + bl.RedirectURL
 						}
-						pool.addRedirect(bl, unit.reCount)
+						pool.doRedirect(bl, unit.depth)
 					}
 					pool.addFuzzyBaseline(bl)
 				} else {
@@ -89,14 +90,17 @@ func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 			}
 		}
 
+		bl.ReqDepth = unit.depth
 		bl.Spended = time.Since(start).Milliseconds()
 		switch unit.source {
 		case InitRandomSource:
 			pool.random = bl
 			pool.addFuzzyBaseline(bl)
+			pool.doCrawl(bl)
 			pool.initwg.Done()
 		case InitIndexSource:
 			pool.index = bl
+			pool.doCrawl(bl)
 			pool.initwg.Done()
 		case CheckSource:
 			if bl.ErrString != "" {
@@ -122,15 +126,17 @@ func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 			pool.reqCount++
 			if pool.reqCount%pool.CheckPeriod == 0 {
 				pool.reqCount++
-				pool.check()
+				pool.doCheck()
 			} else if pool.failedCount%pool.ErrPeriod == 0 {
 				pool.failedCount++
-				pool.check()
+				pool.doCheck()
 			}
 			pool.bar.Done()
 		case RedirectSource:
 			bl.FrontURL = unit.frontUrl
 			pool.tempCh <- bl
+		case CrawlSource:
+			pool.tempCh <- bl
 		}
 
 	})
@@ -184,11 +190,14 @@ func NewPool(ctx context.Context, config *pkg.Config) (*Pool, error) {
 			}
 
 			// 如果要进行递归判断, 要满足 bl有效, mod为path-spray, 当前深度小于最大递归深度
-			if bl.IsValid && pool.Mod == pkg.PathSpray && bl.RecuDepth < maxRecuDepth {
+			if bl.IsValid {
+				pool.doCrawl(bl)
+				if bl.RecuDepth < maxRecursion {
 					if CompareWithExpr(pool.RecuExpr, params) {
 						bl.Recu = true
 					}
 				}
+			}
 			pool.OutputCh <- bl
 			pool.wg.Done()
 		}
@@ -207,7 +216,8 @@ type Pool struct {
 	ctx             context.Context
 	cancel          context.CancelFunc
 	tempCh          chan *pkg.Baseline // 待处理的baseline
-	checkCh         chan sourceType
+	checkCh         chan sourceType    // 独立的check管道， 防止与redirect/crawl冲突
+	additionCh      chan *Unit
 	reqCount        int
 	failedCount     int
 	isFailed        bool
@@ -215,6 +225,7 @@ type Pool struct {
 	random          *pkg.Baseline
 	index           *pkg.Baseline
 	baselines       map[int]*pkg.Baseline
+	urls            map[string]int
 	analyzeDone     bool
 	worder          *words.Worder
 	locker          sync.Mutex
@@ -253,8 +264,10 @@ func (pool *Pool) Init() error {
 		}
 	}
 
-	if pool.random.RedirectURL != "" {
+	return nil
-		CheckRedirect = func(redirectURL string) bool {
+}
+
+func (pool *Pool) checkRedirect(redirectURL string) bool {
 	if redirectURL == pool.random.RedirectURL {
 		// 相同的RedirectURL将被认为是无效数据
 		return false
@@ -262,43 +275,6 @@ func (pool *Pool) Init() error {
 		// path为3xx, 且与baseline中的RedirectURL不同时, 为有效数据
 		return true
 	}
-		}
-	}
-
-	return nil
-}
-
-func (pool *Pool) addRedirect(bl *pkg.Baseline, reCount int) {
-	if reCount >= maxRedirect {
-		return
-	}
-
-	if uu, err := url.Parse(bl.RedirectURL); err == nil && uu.Hostname() == pool.index.Url.Hostname() {
-		pool.wg.Add(1)
-		_ = pool.reqPool.Invoke(&Unit{
-			number:   bl.Number,
-			path:     uu.Path,
-			source:   RedirectSource,
-			frontUrl: bl.UrlString,
-			reCount:  reCount + 1,
-		})
-	}
-}
-
-func (pool *Pool) check() {
-	if pool.failedCount > pool.BreakThreshold {
-		// 当报错次数超过上限是, 结束任务
-		pool.recover()
-		pool.cancel()
-		pool.isFailed = true
-		return
-	}
-
-	if pool.Mod == pkg.HostSpray {
-		pool.checkCh <- CheckSource
-	} else if pool.Mod == pkg.PathSpray {
-		pool.checkCh <- CheckSource
-	}
 }
 
 func (pool *Pool) genReq(s string) (*ihttp.Request, error) {
@@ -311,6 +287,11 @@ func (pool *Pool) genReq(s string) (*ihttp.Request, error) {
 }
 func (pool *Pool) Run(ctx context.Context, offset, limit int) {
 	pool.worder.RunWithRules()
+	go func() {
+		for unit := range pool.additionCh {
+			pool.reqPool.Invoke(unit)
+		}
+	}()
 Loop:
 	for {
 		select {
@@ -340,13 +321,16 @@ Loop:
 			} else if pool.Mod == pkg.PathSpray {
 				pool.reqPool.Invoke(newUnitWithNumber(pkg.RandPath(), source, pool.Statistor.End))
 			}
-
 		case <-ctx.Done():
 			break Loop
 		case <-pool.ctx.Done():
 			break Loop
 		}
 	}
+
+	for len(pool.additionCh) > 0 {
+		time.Sleep(time.Second)
+	}
 	pool.wg.Wait()
 	pool.Statistor.EndTime = time.Now().Unix()
 	pool.Close()
@@ -370,7 +354,7 @@ func (pool *Pool) PreCompare(resp *ihttp.Response) error {
 		return ErrWaf
 	}
 
-	if CheckRedirect != nil && !CheckRedirect(resp.GetHeader("Location")) {
+	if !pool.checkRedirect(resp.GetHeader("Location")) {
 		return ErrRedirect
 	}
 
@@ -417,7 +401,7 @@ func (pool *Pool) BaseCompare(bl *pkg.Baseline) bool {
 	if ok && status == 0 && base.FuzzyCompare(bl) {
 		pool.Statistor.FuzzyNumber++
 		bl.Reason = ErrFuzzyCompareFailed.Error()
-		pool.PutToFuzzy(bl)
+		pool.putToFuzzy(bl)
 		return false
 	}
 
@@ -437,6 +421,77 @@ func CompareWithExpr(exp *vm.Program, params map[string]interface{}) bool {
 	}
 }
 
+func (pool *Pool) doRedirect(bl *pkg.Baseline, depth int) {
+	if depth >= maxRedirect {
+		return
+	}
+
+	if uu, err := url.Parse(bl.RedirectURL); err == nil && uu.Hostname() == pool.index.Url.Hostname() {
+		pool.wg.Add(1)
+		pool.additionCh <- &Unit{
+			path:     uu.Path,
+			source:   RedirectSource,
+			frontUrl: bl.UrlString,
+			depth:    depth + 1,
+		}
+	}
+}
+
+func (pool *Pool) doCrawl(bl *pkg.Baseline) {
+	bl.CollectURL()
+	for _, u := range bl.URLs {
+		if strings.HasPrefix(u, "//") {
+			u = bl.Url.Scheme + u
+		} else if strings.HasPrefix(u, "/") {
+			// 绝对目录拼接
+			u = pkg.URLJoin(pool.BaseURL, u)
+		} else if !strings.HasPrefix(u, "http") {
+			// 相对目录拼接
+			u = pkg.URLJoin(pool.BaseURL, u)
+		}
+
+		if _, ok := pool.urls[u]; ok {
+			pool.urls[u]++
+		} else {
+			// 通过map去重,  只有新的url才会进入到该逻辑
+			pool.urls[u] = 1
+			if bl.ReqDepth < maxCrawl {
+				parsed, err := url.Parse(u)
+				if err != nil {
+					continue
+				}
+				if parsed.Host != bl.Url.Host {
+					// 自动限定scoop, 防止爬到其他网站
+					continue
+				}
+				pool.wg.Add(1)
+				pool.additionCh <- &Unit{
+					path:     parsed.Path,
+					source:   CrawlSource,
+					frontUrl: bl.UrlString,
+					depth:    bl.ReqDepth + 1,
+				}
+			}
+		}
+	}
+}
+
+func (pool *Pool) doCheck() {
+	if pool.failedCount > pool.BreakThreshold {
+		// 当报错次数超过上限是, 结束任务
+		pool.recover()
+		pool.cancel()
+		pool.isFailed = true
+		return
+	}
+
+	if pool.Mod == pkg.HostSpray {
+		pool.checkCh <- CheckSource
+	} else if pool.Mod == pkg.PathSpray {
+		pool.checkCh <- CheckSource
+	}
+}
+
 func (pool *Pool) addFuzzyBaseline(bl *pkg.Baseline) {
 	if _, ok := pool.baselines[bl.Status]; !ok && IntsContains(FuzzyStatus, bl.Status) {
 		bl.Collect()
@@ -447,12 +502,12 @@ func (pool *Pool) addFuzzyBaseline(bl *pkg.Baseline) {
 	}
 }
 
-func (pool *Pool) PutToInvalid(bl *pkg.Baseline, reason string) {
+func (pool *Pool) putToInvalid(bl *pkg.Baseline, reason string) {
 	bl.IsValid = false
 	pool.OutputCh <- bl
 }
 
-func (pool *Pool) PutToFuzzy(bl *pkg.Baseline) {
+func (pool *Pool) putToFuzzy(bl *pkg.Baseline) {
 	bl.IsFuzzy = true
 	pool.FuzzyCh <- bl
 }
@@ -474,5 +529,6 @@ func (pool *Pool) Close() {
 		time.Sleep(time.Duration(100) * time.Millisecond)
 	}
 	close(pool.tempCh)
+	close(pool.additionCh)
 	pool.bar.Close()
 }

internal/runner.go

@@ -72,6 +72,7 @@ type Runner struct {
 	CheckOnly      bool
 	Force          bool
 	IgnoreWaf      bool
+	Crawl          bool
 }
 
 func (r *Runner) PrepareConfig() *pkg.Config {
@@ -90,6 +91,7 @@ func (r *Runner) PrepareConfig() *pkg.Config {
 		FilterExpr:     r.FilterExpr,
 		RecuExpr:       r.RecursiveExpr,
 		IgnoreWaf:      r.IgnoreWaf,
+		Crawl:          r.Crawl,
 	}
 	if config.Mod == pkg.PathSpray {
 		config.ClientType = ihttp.FAST

internal/types.go

@@ -51,6 +51,7 @@ const (
 	InitRandomSource
 	InitIndexSource
 	RedirectSource
+	CrawlSource
 	WordSource
 	WafSource
 )
@@ -60,15 +61,14 @@ func newUnit(path string, source sourceType) *Unit {
 }
 
 func newUnitWithNumber(path string, source sourceType, number int) *Unit {
-	return &Unit{number: number, path: path, source: source}
+	return &Unit{path: path, source: source}
 }
 
 type Unit struct {
-	number   int
 	path     string
 	source   sourceType
 	frontUrl string
-	reCount  int // redirect number
+	depth    int // redirect depth
 }
 
 type Task struct {

pkg/baseline.go

@@ -8,6 +8,7 @@ import (
 	"github.com/chainreactors/parsers"
 	"github.com/chainreactors/spray/pkg/ihttp"
 	"net/url"
+	"path"
 	"strconv"
 	"strings"
 )
@@ -84,7 +85,9 @@ type Baseline struct {
 	Reason       string     `json:"reason"`
 	IsValid      bool       `json:"valid"`
 	IsFuzzy      bool       `json:"fuzzy"`
+	URLs         []string   `json:"urls"`
 	RecuDepth    int        `json:"-"`
+	ReqDepth     int        `json:"depth"`
 	Recu         bool       `json:"-"`
 	*parsers.Hashes
 }
@@ -106,6 +109,64 @@ func (bl *Baseline) Collect() {
 	bl.Frameworks = FingerDetect(string(bl.Raw))
 }
 
+func (bl *Baseline) CollectURL() {
+	if len(bl.Body) == 0 {
+		return
+	}
+	for _, reg := range JSRegexps {
+		urls := reg.FindAllStringSubmatch(string(bl.Body), -1)
+		for _, u := range urls {
+			var filter bool
+			parsed, err := url.Parse(u[1])
+			if err != nil {
+				filter = true
+			} else {
+				for _, scoop := range BadScoop {
+					if scoop == parsed.Host {
+						filter = true
+						break
+					}
+				}
+			}
+
+			if filter {
+				continue
+			}
+			bl.URLs = append(bl.URLs, u[1])
+		}
+	}
+
+	for _, reg := range URLRegexps {
+		urls := reg.FindAllStringSubmatch(string(bl.Body), -1)
+		for _, u := range urls {
+			var filter bool
+			parsed, err := url.Parse(u[1])
+			if err != nil {
+				filter = true
+			} else {
+				ext := path.Ext(parsed.Path)
+				for _, e := range BadExt {
+					if e == ext {
+						filter = true
+						break
+					}
+				}
+				for _, scoop := range BadScoop {
+					if scoop == parsed.Host {
+						filter = true
+						break
+					}
+				}
+			}
+
+			if filter {
+				continue
+			}
+			bl.URLs = append(bl.URLs, u[1])
+		}
+	}
+}
+
 // Compare
 // if totally equal return 1
 // if maybe equal return 0
@@ -186,6 +247,8 @@ func (bl *Baseline) Get(key string) string {
 		return bl.Extracteds.String()
 	case "frame", "framework":
 		return bl.Frameworks.String()
+	case "full":
+		return bl.String()
 	default:
 		return ""
 	}
@@ -256,9 +319,9 @@ func (bl *Baseline) ColorString() string {
 	line.WriteString(" - ")
 	line.WriteString(logs.GreenBold(strconv.Itoa(bl.Status)))
 	line.WriteString(" - ")
-	line.WriteString(logs.Blue(strconv.Itoa(bl.BodyLength)))
+	line.WriteString(logs.YellowBold(strconv.Itoa(bl.BodyLength)))
 	line.WriteString(" - ")
-	line.WriteString(logs.Blue(strconv.Itoa(int(bl.Spended)) + "ms"))
+	line.WriteString(logs.YellowBold(strconv.Itoa(int(bl.Spended)) + "ms"))
 	line.WriteString(logs.GreenLine(bl.Additional("title")))
 	line.WriteString(logs.Blue(bl.Frameworks.String()))
 	line.WriteString(logs.Blue(bl.Extracteds.String()))
@@ -267,6 +330,12 @@ func (bl *Baseline) ColorString() string {
 		line.WriteString(logs.CyanLine(bl.RedirectURL))
 		line.WriteString(" ")
 	}
+	if len(bl.URLs) > 0 {
+		line.WriteString("\n")
+	}
+	for _, u := range bl.URLs {
+		line.WriteString("\t" + u + "\n")
+	}
 	return line.String()
 }
 
@@ -308,6 +377,12 @@ func (bl *Baseline) String() string {
 		line.WriteString(bl.RedirectURL)
 		line.WriteString(" ")
 	}
+	if len(bl.URLs) > 0 {
+		line.WriteString("\n")
+	}
+	for _, u := range bl.URLs {
+		line.WriteString("\t" + u + "\n")
+	}
 	return line.String()
 }
 

pkg/config.go

@@ -38,4 +38,5 @@ type Config struct {
 	FuzzyCh        chan *Baseline
 	Fuzzy          bool
 	IgnoreWaf      bool
+	Crawl          bool
 }

pkg/utils.go

@@ -1,17 +1,35 @@
 package pkg
 
 import (
-	"fmt"
 	"github.com/chainreactors/gogo/v2/pkg/fingers"
 	"github.com/chainreactors/gogo/v2/pkg/utils"
 	"github.com/chainreactors/ipcs"
-	"github.com/go-dedup/simhash"
 	"math/rand"
 	"os"
+	"regexp"
+	"strings"
 	"time"
 	"unsafe"
 )
 
+var (
+	Md5Fingers  map[string]string = make(map[string]string)
+	Mmh3Fingers map[string]string = make(map[string]string)
+	ActivePath  []string
+	Fingers     fingers.Fingers
+	JSRegexps   []*regexp.Regexp = []*regexp.Regexp{
+		regexp.MustCompile(".(https{0,1}:[^\\s,^',^’,^\",^”,^>,^<,^;,^(,^),^|,^*,^\\[]{2,250}?[^=,^*,^\\s,^',^’,^\",^”,^>,^<,^:,^;,^*,^|,^(,^),^\\[]{3}[.]js)"),
+		regexp.MustCompile("[\",',‘,“]\\s{0,6}(/{0,1}[^\\s,^',^’,^\",^”,^|,^>,^<,^:,^;,^*,^(,^\\),^\\[]{2,250}?[^=,^*,^\\s,^',^’,^|,^\",^”,^>,^<,^:,^;,^*,^(,^),^\\[]{3}[.]js)"),
+		regexp.MustCompile("=\\s{0,6}[\",',’,”]{0,1}\\s{0,6}(/{0,1}[^\\s,^',^’,^\",^”,^|,^>,^<,^;,^*,^(,^),^\\[]{2,250}?[^=,^*,^\\s,^',^’,^\",^”,^>,^|,^<,^:,^;,^*,^(,^),^\\[]{3}[.]js)"),
+	}
+	URLRegexps []*regexp.Regexp = []*regexp.Regexp{
+		regexp.MustCompile("[\",',‘,“]\\s{0,6}(https{0,1}:[^\\s,^',^’,^\",^”,^>,^<,^),^(]{2,250}?)\\s{0,6}[\",',‘,“]"),
+		regexp.MustCompile("=\\s{0,6}(https{0,1}:[^\\s,^',^’,^\",^”,^>,^<,^),^(]{2,250})"),
+		regexp.MustCompile("[\",',‘,“]\\s{0,6}([#,.]{0,2}/[^\\s,^',^’,^\",^”,^>,^<,^:,^),^(]{2,250}?)\\s{0,6}[\",',‘,“]"),
+		regexp.MustCompile("href\\s{0,6}=\\s{0,6}[\",',‘,“]{0,1}\\s{0,6}([^\\s,^',^’,^\",^“,^>,^<,^,^+),^(]{2,250})|action\\s{0,6}=\\s{0,6}[\",',‘,“]{0,1}\\s{0,6}([^\\s,^',^’,^\",^“,^>,^<,^,^+),^(]{2,250})"),
+	}
+)
+
 func HasStdin() bool {
 	stat, err := os.Stdin.Stat()
 	if err != nil {
@@ -24,11 +42,6 @@ func HasStdin() bool {
 	return isPipedFromChrDev || isPipedFromFIFO
 }
 
-func Simhash(raw []byte) string {
-	sh := simhash.NewSimhash()
-	return fmt.Sprintf("%x", sh.GetSimhash(sh.NewWordFeatureSet(raw)))
-}
-
 const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
 var src = rand.NewSource(time.Now().UnixNano())
@@ -80,12 +93,6 @@ func RandHost() string {
 	return *(*string)(unsafe.Pointer(&b))
 }
 
-var (
-	Md5Fingers  map[string]string = make(map[string]string)
-	Mmh3Fingers map[string]string = make(map[string]string)
-	Fingers     fingers.Fingers
-)
-
 func LoadTemplates() error {
 	var err error
 	Fingers, err = fingers.LoadFingers(LoadConfig("http"))
@@ -102,6 +109,9 @@ func LoadTemplates() error {
 
 	for _, f := range Fingers {
 		for _, rule := range f.Rules {
+			if rule.SendDataStr != "" {
+				ActivePath = append(ActivePath, rule.SendDataStr)
+			}
 			if rule.Favicon != nil {
 				for _, mmh3 := range rule.Favicon.Mmh3 {
 					Mmh3Fingers[mmh3] = f.Name
@@ -127,3 +137,21 @@ func FingerDetect(content string) Frameworks {
 	}
 	return frames
 }
+
+var (
+	BadExt = []string{".js", ".css", ".scss", ",", ".jpeg", ".jpg", ".png", ".gif", ".ico", ".svg", ".vue", ".ts"}
+	//BadURL   = []string{".js?", ".css?", ".jpeg?", ".jpg?", ".png?", ".gif?", "github.com", "www.w3.org", "example.com", "<", ">", "{", "}", "[", "]", "|", "^", ";", "/js/", ".src", ".url", ".att", ".href", "location.href", "javascript:", "location:", ".createObject", ":location", ".path", "*#__PURE__*", "\\n"}
+	BadScoop = []string{"www.w3.org", "example.com"}
+)
+
+func URLJoin(base, uri string) string {
+	baseSlash := strings.HasSuffix(base, "/")
+	uriSlash := strings.HasPrefix(uri, "/")
+	if (baseSlash && !uriSlash) || (!baseSlash && uriSlash) {
+		return base + uri
+	} else if baseSlash && uriSlash {
+		return base + uri[1:]
+	} else {
+		return base + "/" + uri
+	}
+}