541 lines
11 KiB
Go
541 lines
11 KiB
Go
/*
|
|
Copyright © 2023 Seednode <seednode@seedno.de>
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"net/http"
|
|
"os"
|
|
"path/filepath"
|
|
"regexp"
|
|
"runtime"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/julienschmidt/httprouter"
|
|
"github.com/yosssi/gohtml"
|
|
"seedno.de/seednode/roulette/types"
|
|
"seedno.de/seednode/roulette/types/audio"
|
|
"seedno.de/seednode/roulette/types/code"
|
|
"seedno.de/seednode/roulette/types/flash"
|
|
"seedno.de/seednode/roulette/types/images"
|
|
"seedno.de/seednode/roulette/types/text"
|
|
"seedno.de/seednode/roulette/types/video"
|
|
)
|
|
|
|
const (
|
|
logDate string = `2006-01-02T15:04:05.000-07:00`
|
|
sourcePrefix string = `/source`
|
|
mediaPrefix string = `/view`
|
|
RedirectStatusCode int = http.StatusSeeOther
|
|
timeout time.Duration = 10 * time.Second
|
|
)
|
|
|
|
func preparePath(path string) string {
|
|
if runtime.GOOS == "windows" {
|
|
return fmt.Sprintf("%s/%s", mediaPrefix, filepath.ToSlash(path))
|
|
}
|
|
|
|
return mediaPrefix + path
|
|
}
|
|
|
|
func serveStaticFile(paths []string, cache *fileCache, errorChannel chan<- error) httprouter.Handle {
|
|
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
|
|
prefix := Prefix + sourcePrefix
|
|
|
|
path := strings.TrimPrefix(r.URL.Path, prefix)
|
|
|
|
prefixedFilePath, err := stripQueryParams(path)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
filePath, err := filepath.EvalSymlinks(strings.TrimPrefix(prefixedFilePath, prefix))
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
if !pathIsValid(filePath, paths) {
|
|
notFound(w, r, filePath)
|
|
|
|
return
|
|
}
|
|
|
|
exists, err := fileExists(filePath)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
if !exists {
|
|
notFound(w, r, filePath)
|
|
|
|
return
|
|
}
|
|
|
|
startTime := time.Now()
|
|
|
|
buf, err := os.ReadFile(filePath)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
var status string
|
|
|
|
written, err := w.Write(buf)
|
|
switch {
|
|
case errors.Is(err, syscall.EPIPE):
|
|
status = " (incomplete)"
|
|
case err != nil:
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
refererUri, err := stripQueryParams(refererToUri(r.Referer()))
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
if Russian && refererUri != "" {
|
|
err = kill(filePath, cache)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
}
|
|
|
|
if Verbose {
|
|
fmt.Printf("%s | SERVE: %s (%s) to %s in %s%s\n",
|
|
startTime.Format(logDate),
|
|
filePath,
|
|
humanReadableSize(written),
|
|
realIP(r),
|
|
time.Since(startTime).Round(time.Microsecond),
|
|
status,
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
func serveRoot(paths []string, regexes *regexes, cache *fileCache, formats *types.Types, errorChannel chan<- error) httprouter.Handle {
|
|
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
|
|
refererUri, err := stripQueryParams(refererToUri(r.Referer()))
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
strippedRefererUri := strings.TrimPrefix(refererUri, Prefix+mediaPrefix)
|
|
|
|
filters := &filters{
|
|
included: splitQueryParams(r.URL.Query().Get("include"), regexes),
|
|
excluded: splitQueryParams(r.URL.Query().Get("exclude"), regexes),
|
|
}
|
|
|
|
sortOrder := sortOrder(r)
|
|
|
|
_, refreshInterval := refreshInterval(r)
|
|
|
|
var path string
|
|
|
|
if refererUri != "" {
|
|
path, err = nextFile(strippedRefererUri, sortOrder, regexes, formats)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
}
|
|
|
|
list, err := fileList(paths, filters, sortOrder, cache, formats)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
loop:
|
|
for timeout := time.After(timeout); ; {
|
|
select {
|
|
case <-timeout:
|
|
break loop
|
|
default:
|
|
}
|
|
|
|
if path != "" {
|
|
break loop
|
|
}
|
|
|
|
path, err = newFile(list, sortOrder, regexes, formats)
|
|
switch {
|
|
case err != nil && err == ErrNoMediaFound:
|
|
notFound(w, r, path)
|
|
|
|
return
|
|
case err != nil:
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
}
|
|
|
|
queryParams := generateQueryParams(filters, sortOrder, refreshInterval)
|
|
|
|
newUrl := fmt.Sprintf("http://%s%s%s%s",
|
|
r.Host,
|
|
Prefix,
|
|
preparePath(path),
|
|
queryParams,
|
|
)
|
|
http.Redirect(w, r, newUrl, RedirectStatusCode)
|
|
}
|
|
}
|
|
|
|
func serveMedia(paths []string, regexes *regexes, cache *fileCache, formats *types.Types, errorChannel chan<- error) httprouter.Handle {
|
|
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
|
|
filters := &filters{
|
|
included: splitQueryParams(r.URL.Query().Get("include"), regexes),
|
|
excluded: splitQueryParams(r.URL.Query().Get("exclude"), regexes),
|
|
}
|
|
|
|
sortOrder := sortOrder(r)
|
|
|
|
path := strings.TrimPrefix(strings.TrimPrefix(r.URL.Path, Prefix), mediaPrefix)
|
|
|
|
if runtime.GOOS == "windows" {
|
|
path = strings.TrimPrefix(path, "/")
|
|
}
|
|
|
|
exists, err := fileExists(path)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
if !exists {
|
|
notFound(w, r, path)
|
|
|
|
return
|
|
}
|
|
|
|
format := formats.FileType(path)
|
|
if format == nil {
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
if !format.Validate(path) {
|
|
notFound(w, r, path)
|
|
|
|
return
|
|
}
|
|
|
|
mimeType := format.MimeType(path)
|
|
|
|
fileUri := Prefix + generateFileUri(path)
|
|
|
|
fileName := filepath.Base(path)
|
|
|
|
w.Header().Add("Content-Type", "text/html")
|
|
|
|
refreshTimer, refreshInterval := refreshInterval(r)
|
|
|
|
rootUrl := Prefix + "/" + generateQueryParams(filters, sortOrder, refreshInterval)
|
|
|
|
var htmlBody strings.Builder
|
|
htmlBody.WriteString(`<!DOCTYPE html><html class="bg" lang="en"><head>`)
|
|
htmlBody.WriteString(faviconHtml)
|
|
htmlBody.WriteString(fmt.Sprintf(`<style>%s</style>`, format.Css()))
|
|
|
|
title, err := format.Title(rootUrl, fileUri, path, fileName, Prefix, mimeType)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
htmlBody.WriteString(title)
|
|
htmlBody.WriteString(`</head><body>`)
|
|
if refreshInterval != "0ms" {
|
|
htmlBody.WriteString(fmt.Sprintf("<script>window.onload = function(){setInterval(function(){window.location.href = '%s';}, %d);};</script>",
|
|
rootUrl,
|
|
refreshTimer))
|
|
}
|
|
|
|
body, err := format.Body(rootUrl, fileUri, path, fileName, Prefix, mimeType)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
htmlBody.WriteString(body)
|
|
htmlBody.WriteString(`</body></html>`)
|
|
|
|
startTime := time.Now()
|
|
|
|
formattedPage := gohtml.Format(htmlBody.String())
|
|
|
|
written, err := io.WriteString(w, formattedPage)
|
|
if err != nil {
|
|
errorChannel <- err
|
|
|
|
serverError(w, r, nil)
|
|
|
|
return
|
|
}
|
|
|
|
if format.Type() != "embed" {
|
|
if Verbose {
|
|
fmt.Printf("%s | SERVE: %s (%s) to %s in %s\n",
|
|
startTime.Format(logDate),
|
|
path,
|
|
humanReadableSize(written),
|
|
realIP(r),
|
|
time.Since(startTime).Round(time.Microsecond),
|
|
)
|
|
}
|
|
|
|
if Russian {
|
|
kill(path, cache)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func serveVersion() httprouter.Handle {
|
|
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
|
|
data := []byte(fmt.Sprintf("roulette v%s\n", ReleaseVersion))
|
|
|
|
w.Header().Write(bytes.NewBufferString("Content-Length: " + strconv.Itoa(len(data))))
|
|
|
|
w.Write(data)
|
|
}
|
|
}
|
|
|
|
func register(mux *httprouter.Router, path string, handle httprouter.Handle) {
|
|
mux.GET(path, handle)
|
|
|
|
if Handlers {
|
|
fmt.Printf("Registered handler for path %s\n", path)
|
|
}
|
|
}
|
|
|
|
func redirectRoot() httprouter.Handle {
|
|
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
|
|
newUrl := fmt.Sprintf("http://%s%s",
|
|
r.Host,
|
|
Prefix,
|
|
)
|
|
|
|
http.Redirect(w, r, newUrl, RedirectStatusCode)
|
|
}
|
|
}
|
|
|
|
func ServePage(args []string) error {
|
|
timeZone := os.Getenv("TZ")
|
|
if timeZone != "" {
|
|
var err error
|
|
time.Local, err = time.LoadLocation(timeZone)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
bindHost, err := net.LookupHost(Bind)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
bindAddr := net.ParseIP(bindHost[0])
|
|
if bindAddr == nil {
|
|
return errors.New("invalid bind address provided")
|
|
}
|
|
|
|
formats := &types.Types{
|
|
Extensions: make(map[string]types.Type),
|
|
}
|
|
|
|
if Audio || All {
|
|
formats.Add(audio.New())
|
|
}
|
|
|
|
if Code || All {
|
|
formats.Add(code.New(CodeTheme))
|
|
}
|
|
|
|
if Flash || All {
|
|
formats.Add(flash.New())
|
|
}
|
|
|
|
if Text || All {
|
|
formats.Add(text.New())
|
|
}
|
|
|
|
if Videos || All {
|
|
formats.Add(video.New())
|
|
}
|
|
|
|
// enable image support if no other flags are passed, to retain backwards compatibility
|
|
// to be replaced with rootCmd.MarkFlagsOneRequired on next spf13/cobra update
|
|
if Images || All || len(formats.Extensions) == 0 {
|
|
formats.Add(images.New())
|
|
}
|
|
|
|
paths, err := validatePaths(args, formats)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(paths) == 0 {
|
|
return ErrNoMediaFound
|
|
}
|
|
|
|
listenHost := net.JoinHostPort(Bind, strconv.Itoa(Port))
|
|
|
|
if Verbose {
|
|
fmt.Printf("%s | SERVE: Listening on %s...\n",
|
|
time.Now().Format(logDate),
|
|
listenHost,
|
|
)
|
|
}
|
|
|
|
cache := &fileCache{
|
|
mutex: sync.RWMutex{},
|
|
list: []string{},
|
|
}
|
|
|
|
err = importCache(paths, cache, formats)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
regexes := ®exes{
|
|
filename: regexp.MustCompile(`(.+?)([0-9]*)(\..+)`),
|
|
alphanumeric: regexp.MustCompile(`^[A-z0-9]*$`),
|
|
}
|
|
|
|
mux := httprouter.New()
|
|
|
|
srv := &http.Server{
|
|
Addr: listenHost,
|
|
Handler: mux,
|
|
IdleTimeout: 10 * time.Minute,
|
|
ReadTimeout: 5 * time.Second,
|
|
WriteTimeout: 5 * time.Minute,
|
|
}
|
|
|
|
mux.PanicHandler = serverErrorHandler()
|
|
|
|
if !strings.HasSuffix(Prefix, "/") {
|
|
Prefix = Prefix + "/"
|
|
}
|
|
|
|
errorChannel := make(chan error)
|
|
|
|
register(mux, Prefix, serveRoot(paths, regexes, cache, formats, errorChannel))
|
|
|
|
Prefix = strings.TrimSuffix(Prefix, "/")
|
|
|
|
if Prefix != "" {
|
|
register(mux, "/", redirectRoot())
|
|
}
|
|
|
|
register(mux, Prefix+"/favicons/*favicon", serveFavicons())
|
|
|
|
register(mux, Prefix+"/favicon.ico", serveFavicons())
|
|
|
|
register(mux, Prefix+mediaPrefix+"/*media", serveMedia(paths, regexes, cache, formats, errorChannel))
|
|
|
|
register(mux, Prefix+sourcePrefix+"/*static", serveStaticFile(paths, cache, errorChannel))
|
|
|
|
register(mux, Prefix+"/version", serveVersion())
|
|
|
|
if Cache {
|
|
err = registerCacheHandlers(mux, args, cache, formats, errorChannel)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if Info {
|
|
registerInfoHandlers(mux, args, cache, formats, errorChannel)
|
|
}
|
|
|
|
if Profile {
|
|
registerProfileHandlers(mux)
|
|
}
|
|
|
|
if Russian {
|
|
fmt.Printf("WARNING! Files *will* be deleted after serving!\n\n")
|
|
}
|
|
|
|
go func() {
|
|
for err := range errorChannel {
|
|
fmt.Printf("%s | ERROR: %v\n", time.Now().Format(logDate), err)
|
|
|
|
if ExitOnError {
|
|
fmt.Printf("%s | ERROR: Shutting down...\n", time.Now().Format(logDate))
|
|
|
|
srv.Shutdown(context.Background())
|
|
}
|
|
}
|
|
}()
|
|
|
|
err = srv.ListenAndServe()
|
|
if !errors.Is(err, http.ErrServerClosed) {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|