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focalboard/server/web/webserver.go
Jesús Espino 5ab3f8d3ce
Addining subpath support (#241)
* Addining subpath support

* Fixing a subpath problem in suburls

* Using the server root for allow subpaths

* Fixing baseURL variable name

* Some improvements

* Making it work in mattermost plugin

* Fixing eslint warnings

* Fixing cypress tests
2021-04-16 13:42:37 +02:00

132 lines
3.0 KiB
Go

package web
import (
"fmt"
"log"
"net/http"
"net/url"
"os"
"path"
"path/filepath"
"text/template"
"github.com/gorilla/mux"
)
// RoutedService defines the interface that is needed for any service to
// register themself in the web server to provide new endpoints. (see
// AddRoutes).
type RoutedService interface {
RegisterRoutes(*mux.Router)
}
// Server is the structure responsible for managing our http web server.
type Server struct {
http.Server
baseURL string
rootPath string
port int
ssl bool
localOnly bool
}
// NewServer creates a new instance of the webserver.
func NewServer(rootPath string, serverRoot string, port int, ssl, localOnly bool) *Server {
r := mux.NewRouter()
var addr string
if localOnly {
addr = fmt.Sprintf(`localhost:%d`, port)
} else {
addr = fmt.Sprintf(`:%d`, port)
}
baseURL := ""
url, err := url.Parse(serverRoot)
if err != nil {
log.Printf("Invalid ServerRoot setting: %v\n", err)
}
baseURL = url.Path
ws := &Server{
Server: http.Server{
Addr: addr,
Handler: r,
},
baseURL: baseURL,
rootPath: rootPath,
port: port,
ssl: ssl,
}
return ws
}
func (ws *Server) Router() *mux.Router {
return ws.Server.Handler.(*mux.Router)
}
// AddRoutes allows services to register themself in the webserver router and provide new endpoints.
func (ws *Server) AddRoutes(rs RoutedService) {
rs.RegisterRoutes(ws.Router())
}
func (ws *Server) registerRoutes() {
ws.Router().PathPrefix("/static").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir(filepath.Join(ws.rootPath, "static")))))
ws.Router().PathPrefix("/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
indexTemplate, err := template.New("index").ParseFiles(path.Join(ws.rootPath, "index.html"))
if err != nil {
log.Printf("Unable to serve the index.html fil, err: %v\n", err)
w.WriteHeader(500)
return
}
err = indexTemplate.ExecuteTemplate(w, "index.html", map[string]string{"BaseURL": ws.baseURL})
if err != nil {
log.Printf("Unable to serve the index.html fil, err: %v\n", err)
w.WriteHeader(500)
return
}
})
}
// Start runs the web server and start listening for charsetnnections.
func (ws *Server) Start() {
ws.registerRoutes()
isSSL := ws.ssl && fileExists("./cert/cert.pem") && fileExists("./cert/key.pem")
if isSSL {
log.Printf("https server started on :%d\n", ws.port)
go func() {
if err := ws.ListenAndServeTLS("./cert/cert.pem", "./cert/key.pem"); err != nil {
log.Fatalf("ListenAndServeTLS: %v", err)
}
}()
return
}
log.Printf("http server started on :%d\n", ws.port)
go func() {
if err := ws.ListenAndServe(); err != http.ErrServerClosed {
log.Fatalf("ListenAndServe: %v", err)
}
log.Println("http server stopped")
}()
}
func (ws *Server) Shutdown() error {
return ws.Close()
}
// fileExists returns true if a file exists at the path.
func fileExists(path string) bool {
_, err := os.Stat(path)
if os.IsNotExist(err) {
return false
}
return err == nil
}