mirror of
https://github.com/drakkan/sftpgo.git
synced 2024-11-22 07:30:25 +00:00
408 lines
16 KiB
Go
408 lines
16 KiB
Go
package httpd
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import (
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"crypto/tls"
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"crypto/x509"
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"errors"
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"fmt"
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"log"
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"net/http"
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"time"
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"github.com/go-chi/chi"
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"github.com/go-chi/chi/middleware"
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"github.com/go-chi/jwtauth"
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"github.com/go-chi/render"
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"github.com/drakkan/sftpgo/common"
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"github.com/drakkan/sftpgo/dataprovider"
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"github.com/drakkan/sftpgo/logger"
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"github.com/drakkan/sftpgo/utils"
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"github.com/drakkan/sftpgo/version"
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)
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var compressor = middleware.NewCompressor(5)
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type httpdServer struct {
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binding Binding
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staticFilesPath string
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enableWebAdmin bool
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router *chi.Mux
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tokenAuth *jwtauth.JWTAuth
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}
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func newHttpdServer(b Binding, staticFilesPath string, enableWebAdmin bool) *httpdServer {
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return &httpdServer{
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binding: b,
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staticFilesPath: staticFilesPath,
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enableWebAdmin: enableWebAdmin && b.EnableWebAdmin,
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}
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}
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func (s *httpdServer) listenAndServe() error {
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s.initializeRouter()
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httpServer := &http.Server{
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Handler: s.router,
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ReadTimeout: 60 * time.Second,
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WriteTimeout: 60 * time.Second,
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IdleTimeout: 120 * time.Second,
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MaxHeaderBytes: 1 << 16, // 64KB
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ErrorLog: log.New(&logger.StdLoggerWrapper{Sender: logSender}, "", 0),
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}
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if certMgr != nil && s.binding.EnableHTTPS {
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config := &tls.Config{
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GetCertificate: certMgr.GetCertificateFunc(),
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MinVersion: tls.VersionTLS12,
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}
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httpServer.TLSConfig = config
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if s.binding.ClientAuthType == 1 {
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httpServer.TLSConfig.ClientCAs = certMgr.GetRootCAs()
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httpServer.TLSConfig.ClientAuth = tls.RequireAndVerifyClientCert
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httpServer.TLSConfig.VerifyConnection = s.verifyTLSConnection
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}
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return utils.HTTPListenAndServe(httpServer, s.binding.Address, s.binding.Port, true, logSender)
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}
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return utils.HTTPListenAndServe(httpServer, s.binding.Address, s.binding.Port, false, logSender)
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}
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func (s *httpdServer) verifyTLSConnection(state tls.ConnectionState) error {
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if certMgr != nil {
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var clientCrt *x509.Certificate
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var clientCrtName string
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if len(state.PeerCertificates) > 0 {
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clientCrt = state.PeerCertificates[0]
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clientCrtName = clientCrt.Subject.String()
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}
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if len(state.VerifiedChains) == 0 {
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logger.Warn(logSender, "", "TLS connection cannot be verified: unable to get verification chain")
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return errors.New("TLS connection cannot be verified: unable to get verification chain")
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}
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for _, verifiedChain := range state.VerifiedChains {
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var caCrt *x509.Certificate
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if len(verifiedChain) > 0 {
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caCrt = verifiedChain[len(verifiedChain)-1]
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}
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if certMgr.IsRevoked(clientCrt, caCrt) {
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logger.Debug(logSender, "", "tls handshake error, client certificate %#v has been revoked", clientCrtName)
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return common.ErrCrtRevoked
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}
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}
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}
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return nil
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}
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func (s *httpdServer) refreshCookie(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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s.checkCookieExpiration(w, r)
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next.ServeHTTP(w, r)
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})
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}
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func (s *httpdServer) handleWebLoginPost(w http.ResponseWriter, r *http.Request) {
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r.Body = http.MaxBytesReader(w, r.Body, maxRequestSize)
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if err := r.ParseForm(); err != nil {
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renderLoginPage(w, err.Error())
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return
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}
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username := r.Form.Get("username")
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password := r.Form.Get("password")
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if username == "" || password == "" {
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renderLoginPage(w, "Invalid credentials")
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return
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}
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if err := verifyCSRFToken(r.Form.Get(csrfFormToken)); err != nil {
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renderLoginPage(w, err.Error())
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return
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}
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admin, err := dataprovider.CheckAdminAndPass(username, password, utils.GetIPFromRemoteAddress(r.RemoteAddr))
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if err != nil {
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renderLoginPage(w, err.Error())
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return
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}
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if connAddr, ok := r.Context().Value(connAddrKey).(string); ok {
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if connAddr != r.RemoteAddr {
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if !admin.CanLoginFromIP(utils.GetIPFromRemoteAddress(connAddr)) {
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renderLoginPage(w, fmt.Sprintf("Login from IP %v is not allowed", connAddr))
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return
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}
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}
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}
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c := jwtTokenClaims{
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Username: admin.Username,
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Permissions: admin.Permissions,
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Signature: admin.GetSignature(),
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}
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err = c.createAndSetCookie(w, r, s.tokenAuth)
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if err != nil {
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renderLoginPage(w, err.Error())
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return
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}
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http.Redirect(w, r, webUsersPath, http.StatusFound)
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}
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func (s *httpdServer) logout(w http.ResponseWriter, r *http.Request) {
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invalidateToken(r)
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sendAPIResponse(w, r, nil, "Your token has been invalidated", http.StatusOK)
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}
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func (s *httpdServer) getToken(w http.ResponseWriter, r *http.Request) {
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username, password, ok := r.BasicAuth()
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if !ok {
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w.Header().Set(common.HTTPAuthenticationHeader, basicRealm)
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sendAPIResponse(w, r, nil, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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return
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}
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admin, err := dataprovider.CheckAdminAndPass(username, password, utils.GetIPFromRemoteAddress(r.RemoteAddr))
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if err != nil {
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w.Header().Set(common.HTTPAuthenticationHeader, basicRealm)
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sendAPIResponse(w, r, err, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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return
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}
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s.checkAddrAndSendToken(w, r, admin)
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}
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func (s *httpdServer) checkAddrAndSendToken(w http.ResponseWriter, r *http.Request, admin dataprovider.Admin) {
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if connAddr, ok := r.Context().Value(connAddrKey).(string); ok {
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if connAddr != r.RemoteAddr {
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if !admin.CanLoginFromIP(utils.GetIPFromRemoteAddress(connAddr)) {
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sendAPIResponse(w, r, nil, http.StatusText(http.StatusForbidden), http.StatusForbidden)
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return
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}
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}
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}
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c := jwtTokenClaims{
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Username: admin.Username,
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Permissions: admin.Permissions,
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Signature: admin.GetSignature(),
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}
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resp, err := c.createTokenResponse(s.tokenAuth, tokenAudienceAPI)
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if err != nil {
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sendAPIResponse(w, r, err, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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render.JSON(w, r, resp)
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}
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func (s *httpdServer) checkCookieExpiration(w http.ResponseWriter, r *http.Request) {
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token, claims, err := jwtauth.FromContext(r.Context())
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if err != nil {
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return
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}
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tokenClaims := jwtTokenClaims{}
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tokenClaims.Decode(claims)
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if tokenClaims.Username == "" || tokenClaims.Signature == "" {
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return
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}
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if time.Until(token.Expiration()) > tokenRefreshMin {
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return
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}
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admin, err := dataprovider.AdminExists(tokenClaims.Username)
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if err != nil {
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return
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}
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if admin.Status != 1 {
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logger.Debug(logSender, "", "admin %#v is disabled, unable to refresh cookie", admin.Username)
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return
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}
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if admin.GetSignature() != tokenClaims.Signature {
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logger.Debug(logSender, "", "signature mismatch for admin %#v, unable to refresh cookie", admin.Username)
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return
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}
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if !admin.CanLoginFromIP(utils.GetIPFromRemoteAddress(r.RemoteAddr)) {
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logger.Debug(logSender, "", "admin %#v cannot login from %v, unable to refresh cookie", admin.Username, r.RemoteAddr)
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return
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}
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if connAddr, ok := r.Context().Value(connAddrKey).(string); ok {
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if connAddr != r.RemoteAddr {
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if !admin.CanLoginFromIP(utils.GetIPFromRemoteAddress(connAddr)) {
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logger.Debug(logSender, "", "admin %#v cannot login from %v, unable to refresh cookie",
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admin.Username, connAddr)
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return
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}
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}
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}
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logger.Debug(logSender, "", "cookie refreshed for admin %#v", admin.Username)
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tokenClaims.createAndSetCookie(w, r, s.tokenAuth) //nolint:errcheck
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}
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func (s *httpdServer) updateContextFromCookie(r *http.Request) *http.Request {
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token, _, err := jwtauth.FromContext(r.Context())
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if token == nil || err != nil {
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_, err = r.Cookie("jwt")
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if err != nil {
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return r
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}
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token, err = jwtauth.VerifyRequest(s.tokenAuth, r, jwtauth.TokenFromCookie)
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ctx := jwtauth.NewContext(r.Context(), token, err)
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return r.WithContext(ctx)
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}
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return r
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}
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func (s *httpdServer) initializeRouter() {
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s.tokenAuth = jwtauth.New("HS256", utils.GenerateRandomBytes(32), nil)
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s.router = chi.NewRouter()
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s.router.Use(saveConnectionAddress)
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s.router.Use(middleware.GetHead)
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s.router.Group(func(r chi.Router) {
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r.Get(healthzPath, func(w http.ResponseWriter, r *http.Request) {
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render.PlainText(w, r, "ok")
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})
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})
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s.router.Group(func(router chi.Router) {
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router.Use(middleware.RequestID)
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router.Use(middleware.RealIP)
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router.Use(logger.NewStructuredLogger(logger.GetLogger()))
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router.Use(middleware.Recoverer)
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router.NotFound(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if s.enableWebAdmin && isWebAdminRequest(r) {
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r = s.updateContextFromCookie(r)
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renderNotFoundPage(w, r, nil)
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return
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}
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sendAPIResponse(w, r, nil, "Not Found", http.StatusNotFound)
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}))
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router.Get(tokenPath, s.getToken)
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router.Group(func(router chi.Router) {
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router.Use(jwtauth.Verify(s.tokenAuth, jwtauth.TokenFromHeader))
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router.Use(jwtAuthenticator)
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router.Get(versionPath, func(w http.ResponseWriter, r *http.Request) {
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render.JSON(w, r, version.Get())
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})
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router.Get(logoutPath, s.logout)
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router.Put(adminPwdPath, changeAdminPassword)
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router.With(checkPerm(dataprovider.PermAdminViewServerStatus)).
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Get(serverStatusPath, func(w http.ResponseWriter, r *http.Request) {
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render.JSON(w, r, getServicesStatus())
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})
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router.With(checkPerm(dataprovider.PermAdminViewConnections)).
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Get(activeConnectionsPath, func(w http.ResponseWriter, r *http.Request) {
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render.JSON(w, r, common.Connections.GetStats())
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})
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router.With(checkPerm(dataprovider.PermAdminCloseConnections)).
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Delete(activeConnectionsPath+"/{connectionID}", handleCloseConnection)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans)).Get(quotaScanPath, getQuotaScans)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans)).Post(quotaScanPath, startQuotaScan)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans)).Get(quotaScanVFolderPath, getVFolderQuotaScans)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans)).Post(quotaScanVFolderPath, startVFolderQuotaScan)
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router.With(checkPerm(dataprovider.PermAdminViewUsers)).Get(userPath, getUsers)
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router.With(checkPerm(dataprovider.PermAdminAddUsers)).Post(userPath, addUser)
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router.With(checkPerm(dataprovider.PermAdminViewUsers)).Get(userPath+"/{username}", getUserByUsername)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Put(userPath+"/{username}", updateUser)
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router.With(checkPerm(dataprovider.PermAdminDeleteUsers)).Delete(userPath+"/{username}", deleteUser)
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router.With(checkPerm(dataprovider.PermAdminViewUsers)).Get(folderPath, getFolders)
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router.With(checkPerm(dataprovider.PermAdminViewUsers)).Get(folderPath+"/{name}", getFolderByName)
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router.With(checkPerm(dataprovider.PermAdminAddUsers)).Post(folderPath, addFolder)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Put(folderPath+"/{name}", updateFolder)
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router.With(checkPerm(dataprovider.PermAdminDeleteUsers)).Delete(folderPath+"/{name}", deleteFolder)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Get(dumpDataPath, dumpData)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Get(loadDataPath, loadData)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Post(loadDataPath, loadDataFromRequest)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Put(updateUsedQuotaPath, updateUserQuotaUsage)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Put(updateFolderUsedQuotaPath, updateVFolderQuotaUsage)
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router.With(checkPerm(dataprovider.PermAdminViewDefender)).Get(defenderBanTime, getBanTime)
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router.With(checkPerm(dataprovider.PermAdminViewDefender)).Get(defenderScore, getScore)
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router.With(checkPerm(dataprovider.PermAdminManageDefender)).Post(defenderUnban, unban)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Get(adminPath, getAdmins)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Post(adminPath, addAdmin)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Get(adminPath+"/{username}", getAdminByUsername)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Put(adminPath+"/{username}", updateAdmin)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Delete(adminPath+"/{username}", deleteAdmin)
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})
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if s.enableWebAdmin {
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router.Get("/", func(w http.ResponseWriter, r *http.Request) {
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http.Redirect(w, r, webLoginPath, http.StatusMovedPermanently)
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})
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router.Get(webBasePath, func(w http.ResponseWriter, r *http.Request) {
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http.Redirect(w, r, webLoginPath, http.StatusMovedPermanently)
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})
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router.Get(webLoginPath, handleWebLogin)
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router.Post(webLoginPath, s.handleWebLoginPost)
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router.Group(func(router chi.Router) {
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router.Use(jwtauth.Verify(s.tokenAuth, jwtauth.TokenFromCookie))
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router.Use(jwtAuthenticatorWeb)
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router.Get(webLogoutPath, handleWebLogout)
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router.With(s.refreshCookie).Get(webChangeAdminPwdPath, handleWebAdminChangePwd)
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router.Post(webChangeAdminPwdPath, handleWebAdminChangePwdPost)
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router.With(checkPerm(dataprovider.PermAdminViewUsers), s.refreshCookie).
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Get(webUsersPath, handleGetWebUsers)
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router.With(checkPerm(dataprovider.PermAdminAddUsers), s.refreshCookie).
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Get(webUserPath, handleWebAddUserGet)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers), s.refreshCookie).
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Get(webUserPath+"/{username}", handleWebUpdateUserGet)
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router.With(checkPerm(dataprovider.PermAdminAddUsers)).Post(webUserPath, handleWebAddUserPost)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Post(webUserPath+"/{username}", handleWebUpdateUserPost)
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router.With(checkPerm(dataprovider.PermAdminViewConnections), s.refreshCookie).
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Get(webConnectionsPath, handleWebGetConnections)
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router.With(checkPerm(dataprovider.PermAdminViewUsers), s.refreshCookie).
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Get(webFoldersPath, handleWebGetFolders)
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router.With(checkPerm(dataprovider.PermAdminAddUsers), s.refreshCookie).
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Get(webFolderPath, handleWebAddFolderGet)
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router.With(checkPerm(dataprovider.PermAdminAddUsers)).Post(webFolderPath, handleWebAddFolderPost)
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router.With(checkPerm(dataprovider.PermAdminViewServerStatus), s.refreshCookie).
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Get(webStatusPath, handleWebGetStatus)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins), s.refreshCookie).
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Get(webAdminsPath, handleGetWebAdmins)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins), s.refreshCookie).
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Get(webAdminPath, handleWebAddAdminGet)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins), s.refreshCookie).
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Get(webAdminPath+"/{username}", handleWebUpdateAdminGet)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Post(webAdminPath, handleWebAddAdminPost)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins)).Post(webAdminPath+"/{username}", handleWebUpdateAdminPost)
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router.With(checkPerm(dataprovider.PermAdminManageAdmins), verifyCSRFHeader).
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Delete(webAdminPath+"/{username}", deleteAdmin)
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router.With(checkPerm(dataprovider.PermAdminCloseConnections), verifyCSRFHeader).
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Delete(webConnectionsPath+"/{connectionID}", handleCloseConnection)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers), s.refreshCookie).
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Get(webFolderPath+"/{name}", handleWebUpdateFolderGet)
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router.With(checkPerm(dataprovider.PermAdminChangeUsers)).Post(webFolderPath+"/{name}", handleWebUpdateFolderPost)
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router.With(checkPerm(dataprovider.PermAdminDeleteUsers), verifyCSRFHeader).
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Delete(webFolderPath+"/{name}", deleteFolder)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans), verifyCSRFHeader).
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Post(webScanVFolderPath, startVFolderQuotaScan)
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router.With(checkPerm(dataprovider.PermAdminDeleteUsers), verifyCSRFHeader).
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Delete(webUserPath+"/{username}", deleteUser)
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router.With(checkPerm(dataprovider.PermAdminQuotaScans), verifyCSRFHeader).
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Post(webQuotaScanPath, startQuotaScan)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Get(webMaintenancePath, handleWebMaintenance)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Get(webBackupPath, dumpData)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Post(webRestorePath, handleWebRestore)
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router.With(checkPerm(dataprovider.PermAdminManageSystem), s.refreshCookie).
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Get(webTemplateUser, handleWebTemplateUserGet)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Post(webTemplateUser, handleWebTemplateUserPost)
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router.With(checkPerm(dataprovider.PermAdminManageSystem), s.refreshCookie).
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Get(webTemplateFolder, handleWebTemplateFolderGet)
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router.With(checkPerm(dataprovider.PermAdminManageSystem)).Post(webTemplateFolder, handleWebTemplateFolderPost)
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})
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router.Group(func(router chi.Router) {
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router.Use(compressor.Handler)
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fileServer(router, webStaticFilesPath, http.Dir(s.staticFilesPath))
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})
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}
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})
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}
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