Refactoring modules

modules/https_server/https_server.go

@@ -0,0 +1,174 @@
+package https_server
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/bettercap/bettercap/log"
+	"github.com/bettercap/bettercap/session"
+	"github.com/bettercap/bettercap/tls"
+
+	"github.com/evilsocket/islazy/fs"
+	"github.com/evilsocket/islazy/tui"
+)
+
+type HttpsServer struct {
+	session.SessionModule
+	server   *http.Server
+	certFile string
+	keyFile  string
+}
+
+func NewHttpsServer(s *session.Session) *HttpsServer {
+	httpd := &HttpsServer{
+		SessionModule: session.NewSessionModule("https.server", s),
+		server:        &http.Server{},
+	}
+
+	httpd.AddParam(session.NewStringParameter("https.server.path",
+		".",
+		"",
+		"Server folder."))
+
+	httpd.AddParam(session.NewStringParameter("https.server.address",
+		session.ParamIfaceAddress,
+		session.IPv4Validator,
+		"Address to bind the http server to."))
+
+	httpd.AddParam(session.NewIntParameter("https.server.port",
+		"443",
+		"Port to bind the http server to."))
+
+	httpd.AddParam(session.NewStringParameter("https.server.certificate",
+		"~/.bettercap-https.cert.pem",
+		"",
+		"TLS certificate file (will be auto generated if filled but not existing)."))
+
+	httpd.AddParam(session.NewStringParameter("https.server.key",
+		"~/.bettercap-https.key.pem",
+		"",
+		"TLS key file (will be auto generated if filled but not existing)."))
+
+	tls.CertConfigToModule("https.server", &httpd.SessionModule, tls.DefaultLegitConfig)
+
+	httpd.AddHandler(session.NewModuleHandler("https.server on", "",
+		"Start https server.",
+		func(args []string) error {
+			return httpd.Start()
+		}))
+
+	httpd.AddHandler(session.NewModuleHandler("https.server off", "",
+		"Stop https server.",
+		func(args []string) error {
+			return httpd.Stop()
+		}))
+
+	return httpd
+}
+
+func (httpd *HttpsServer) Name() string {
+	return "https.server"
+}
+
+func (httpd *HttpsServer) Description() string {
+	return "A simple HTTPS server, to be used to serve files and scripts across the network."
+}
+
+func (httpd *HttpsServer) Author() string {
+	return "Simone Margaritelli <evilsocket@protonmail.com>"
+}
+
+func (httpd *HttpsServer) Configure() error {
+	var err error
+	var path string
+	var address string
+	var port int
+	var certFile string
+	var keyFile string
+
+	if httpd.Running() {
+		return session.ErrAlreadyStarted
+	}
+
+	if err, path = httpd.StringParam("https.server.path"); err != nil {
+		return err
+	}
+
+	router := http.NewServeMux()
+	fileServer := http.FileServer(http.Dir(path))
+
+	router.HandleFunc("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		log.Info("(%s) %s %s %s%s", tui.Green("https"), tui.Bold(strings.Split(r.RemoteAddr, ":")[0]), r.Method, r.Host, r.URL.Path)
+		fileServer.ServeHTTP(w, r)
+	}))
+
+	httpd.server.Handler = router
+
+	if err, address = httpd.StringParam("https.server.address"); err != nil {
+		return err
+	}
+
+	if err, port = httpd.IntParam("https.server.port"); err != nil {
+		return err
+	}
+
+	httpd.server.Addr = fmt.Sprintf("%s:%d", address, port)
+
+	if err, certFile = httpd.StringParam("https.server.certificate"); err != nil {
+		return err
+	} else if certFile, err = fs.Expand(certFile); err != nil {
+		return err
+	}
+
+	if err, keyFile = httpd.StringParam("https.server.key"); err != nil {
+		return err
+	} else if keyFile, err = fs.Expand(keyFile); err != nil {
+		return err
+	}
+
+	if !fs.Exists(certFile) || !fs.Exists(keyFile) {
+		err, cfg := tls.CertConfigFromModule("https.server", httpd.SessionModule)
+		if err != nil {
+			return err
+		}
+
+		log.Debug("%+v", cfg)
+		log.Info("generating server TLS key to %s", keyFile)
+		log.Info("generating server TLS certificate to %s", certFile)
+		if err := tls.Generate(cfg, certFile, keyFile); err != nil {
+			return err
+		}
+	} else {
+		log.Info("loading server TLS key from %s", keyFile)
+		log.Info("loading server TLS certificate from %s", certFile)
+	}
+
+	httpd.certFile = certFile
+	httpd.keyFile = keyFile
+
+	return nil
+}
+
+func (httpd *HttpsServer) Start() error {
+	if err := httpd.Configure(); err != nil {
+		return err
+	}
+
+	return httpd.SetRunning(true, func() {
+		log.Info("HTTPS server starting on https://%s", httpd.server.Addr)
+		if err := httpd.server.ListenAndServeTLS(httpd.certFile, httpd.keyFile); err != nil && err != http.ErrServerClosed {
+			panic(err)
+		}
+	})
+}
+
+func (httpd *HttpsServer) Stop() error {
+	return httpd.SetRunning(false, func() {
+		ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+		defer cancel()
+		httpd.server.Shutdown(ctx)
+	})
+}