mirror of
https://github.com/bettercap/bettercap.git
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82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package http_proxy
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import (
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"fmt"
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"net/http"
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"strings"
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"sync"
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"github.com/elazarl/goproxy"
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"github.com/jpillora/go-tld"
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)
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type CookieTracker struct {
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sync.RWMutex
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set map[string]bool
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}
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func NewCookieTracker() *CookieTracker {
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return &CookieTracker{
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set: make(map[string]bool),
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}
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}
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func (t *CookieTracker) domainOf(req *http.Request) string {
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if parsed, err := tld.Parse(req.Host); err != nil {
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return req.Host
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} else {
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return fmt.Sprintf("%s.%s", parsed.Domain, parsed.TLD)
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}
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}
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func (t *CookieTracker) keyOf(req *http.Request) string {
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client := strings.Split(req.RemoteAddr, ":")[0]
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domain := t.domainOf(req)
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return fmt.Sprintf("%s-%s", client, domain)
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}
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func (t *CookieTracker) IsClean(req *http.Request) bool {
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// we only clean GET requests
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if req.Method != "GET" {
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return true
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}
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// does the request have any cookie?
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cookie := req.Header.Get("Cookie")
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if cookie == "" {
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return true
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}
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t.RLock()
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defer t.RUnlock()
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// was it already processed?
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if _, found := t.set[t.keyOf(req)]; found {
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return true
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}
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// unknown session cookie
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return false
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}
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func (t *CookieTracker) Track(req *http.Request) {
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t.Lock()
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defer t.Unlock()
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t.set[t.keyOf(req)] = true
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}
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func (t *CookieTracker) Expire(req *http.Request) *http.Response {
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domain := t.domainOf(req)
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redir := goproxy.NewResponse(req, "text/plain", 302, "")
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for _, c := range req.Cookies() {
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redir.Header.Add("Set-Cookie", fmt.Sprintf("%s=EXPIRED; path=/; domain=%s; Expires=Mon, 01-Jan-1990 00:00:00 GMT", c.Name, domain))
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redir.Header.Add("Set-Cookie", fmt.Sprintf("%s=EXPIRED; path=/; domain=%s; Expires=Mon, 01-Jan-1990 00:00:00 GMT", c.Name, c.Domain))
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}
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redir.Header.Add("Location", fmt.Sprintf("http://%s/", req.Host))
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redir.Header.Add("Connection", "close")
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return redir
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}
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