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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package web
import (
"fmt"
"net/http"
"path/filepath"
"strings"
"github.com/NYTimes/gziphandler"
"github.com/avct/uasurfer"
"github.com/mattermost/mattermost-server/api"
"github.com/mattermost/mattermost-server/mlog"
"github.com/mattermost/mattermost-server/model"
"github.com/mattermost/mattermost-server/utils"
)
func Init(api3 *api.API) {
mlog.Debug("Initializing web routes")
mainrouter := api3.BaseRoutes.Root
if *api3.App.Config().ServiceSettings.WebserverMode != "disabled" {
staticDir, _ := utils.FindDir(model.CLIENT_DIR)
mlog.Debug(fmt.Sprintf("Using client directory at %v", staticDir))
staticHandler := staticHandler(http.StripPrefix("/static/", http.FileServer(http.Dir(staticDir))))
pluginHandler := pluginHandler(api3.App.Config, http.StripPrefix("/static/plugins/", http.FileServer(http.Dir(*api3.App.Config().PluginSettings.ClientDirectory))))
if *api3.App.Config().ServiceSettings.WebserverMode == "gzip" {
staticHandler = gziphandler.GzipHandler(staticHandler)
pluginHandler = gziphandler.GzipHandler(pluginHandler)
}
mainrouter.PathPrefix("/static/plugins/").Handler(pluginHandler)
mainrouter.PathPrefix("/static/").Handler(staticHandler)
mainrouter.Handle("/{anything:.*}", api3.AppHandlerIndependent(root)).Methods("GET")
}
}
func staticHandler(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "max-age=31556926, public")
if strings.HasSuffix(r.URL.Path, "/") {
http.NotFound(w, r)
return
}
handler.ServeHTTP(w, r)
})
}
func pluginHandler(config model.ConfigFunc, handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if *config().ServiceSettings.EnableDeveloper {
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
} else {
w.Header().Set("Cache-Control", "max-age=31556926, public")
}
if strings.HasSuffix(r.URL.Path, "/") {
http.NotFound(w, r)
return
}
handler.ServeHTTP(w, r)
})
}
// Due to the complexities of UA detection and the ramifications of a misdetection only older Safari and IE browsers throw incompatibility errors.
// Map should be of minimum required browser version.
var browserMinimumSupported = map[string]int{
"BrowserIE": 11,
"BrowserSafari": 9,
}
func CheckClientCompatability(agentString string) bool {
ua := uasurfer.Parse(agentString)
if version, exist := browserMinimumSupported[ua.Browser.Name.String()]; exist && ua.Browser.Version.Major < version {
return false
}
return true
}
func root(c *api.Context, w http.ResponseWriter, r *http.Request) {
if !CheckClientCompatability(r.UserAgent()) {
w.Header().Set("Cache-Control", "no-store")
page := utils.NewHTMLTemplate(c.App.HTMLTemplates(), "unsupported_browser")
page.Props["Title"] = c.T("web.error.unsupported_browser.title")
page.Props["Message"] = c.T("web.error.unsupported_browser.message")
page.RenderToWriter(w)
return
}
if api.IsApiCall(r) {
api.Handle404(c.App, w, r)
return
}
w.Header().Set("Cache-Control", "no-cache, max-age=31556926, public")
staticDir, _ := utils.FindDir(model.CLIENT_DIR)
http.ServeFile(w, r, filepath.Join(staticDir, "root.html"))
}
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