github.com/dschalla/mattermost-server@v4.8.1-rc1+incompatible/web/web.go (about)

     1  // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
     2  // See License.txt for license information.
     3  
     4  package web
     5  
     6  import (
     7  	"net/http"
     8  	"strings"
     9  
    10  	"github.com/NYTimes/gziphandler"
    11  
    12  	l4g "github.com/alecthomas/log4go"
    13  	"github.com/mattermost/mattermost-server/api"
    14  	"github.com/mattermost/mattermost-server/model"
    15  	"github.com/mattermost/mattermost-server/utils"
    16  	"github.com/mssola/user_agent"
    17  )
    18  
    19  func Init(api3 *api.API) {
    20  	l4g.Debug(utils.T("web.init.debug"))
    21  
    22  	mainrouter := api3.BaseRoutes.Root
    23  
    24  	if *api3.App.Config().ServiceSettings.WebserverMode != "disabled" {
    25  		staticDir, _ := utils.FindDir(model.CLIENT_DIR)
    26  		l4g.Debug("Using client directory at %v", staticDir)
    27  
    28  		staticHandler := staticHandler(http.StripPrefix("/static/", http.FileServer(http.Dir(staticDir))))
    29  		pluginHandler := pluginHandler(api3.App.Config, http.StripPrefix("/static/plugins/", http.FileServer(http.Dir(*api3.App.Config().PluginSettings.ClientDirectory))))
    30  
    31  		if *api3.App.Config().ServiceSettings.WebserverMode == "gzip" {
    32  			staticHandler = gziphandler.GzipHandler(staticHandler)
    33  			pluginHandler = gziphandler.GzipHandler(pluginHandler)
    34  		}
    35  
    36  		mainrouter.PathPrefix("/static/plugins/").Handler(pluginHandler)
    37  		mainrouter.PathPrefix("/static/").Handler(staticHandler)
    38  		mainrouter.Handle("/{anything:.*}", api3.AppHandlerIndependent(root)).Methods("GET")
    39  	}
    40  }
    41  
    42  func staticHandler(handler http.Handler) http.Handler {
    43  	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    44  		w.Header().Set("Cache-Control", "max-age=31556926, public")
    45  		if strings.HasSuffix(r.URL.Path, "/") {
    46  			http.NotFound(w, r)
    47  			return
    48  		}
    49  		handler.ServeHTTP(w, r)
    50  	})
    51  }
    52  
    53  func pluginHandler(config model.ConfigFunc, handler http.Handler) http.Handler {
    54  	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    55  		if *config().ServiceSettings.EnableDeveloper {
    56  			w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
    57  		} else {
    58  			w.Header().Set("Cache-Control", "max-age=31556926, public")
    59  		}
    60  		if strings.HasSuffix(r.URL.Path, "/") {
    61  			http.NotFound(w, r)
    62  			return
    63  		}
    64  		handler.ServeHTTP(w, r)
    65  	})
    66  }
    67  
    68  var browsersNotSupported string = "MSIE/8;MSIE/9;MSIE/10;Internet Explorer/8;Internet Explorer/9;Internet Explorer/10;Safari/7;Safari/8"
    69  
    70  func CheckBrowserCompatability(c *api.Context, r *http.Request) bool {
    71  	ua := user_agent.New(r.UserAgent())
    72  	bname, bversion := ua.Browser()
    73  
    74  	browsers := strings.Split(browsersNotSupported, ";")
    75  	for _, browser := range browsers {
    76  		version := strings.Split(browser, "/")
    77  
    78  		if strings.HasPrefix(bname, version[0]) && strings.HasPrefix(bversion, version[1]) {
    79  			return false
    80  		}
    81  	}
    82  
    83  	return true
    84  }
    85  
    86  func root(c *api.Context, w http.ResponseWriter, r *http.Request) {
    87  	if !CheckBrowserCompatability(c, r) {
    88  		w.Header().Set("Cache-Control", "no-store")
    89  		page := utils.NewHTMLTemplate(c.App.HTMLTemplates(), "unsupported_browser")
    90  		page.Props["Title"] = c.T("web.error.unsupported_browser.title")
    91  		page.Props["Message"] = c.T("web.error.unsupported_browser.message")
    92  		page.RenderToWriter(w)
    93  		return
    94  	}
    95  
    96  	if api.IsApiCall(r) {
    97  		api.Handle404(c.App, w, r)
    98  		return
    99  	}
   100  
   101  	w.Header().Set("Cache-Control", "no-cache, max-age=31556926, public")
   102  
   103  	staticDir, _ := utils.FindDir(model.CLIENT_DIR)
   104  	http.ServeFile(w, r, staticDir+"root.html")
   105  }