gossa/main.go
Pierre Dubouilh c78d70c438 favicon
2018-09-21 15:48:53 +02:00

250 lines
6.4 KiB
Go
Executable file

package main
import (
"encoding/json"
"errors"
"flag"
"fmt"
"html"
"io"
"io/ioutil"
"log"
"net/http"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
)
func check(e error) {
if e != nil {
panic(e)
}
}
var fs http.Handler
var host = flag.String("h", "127.0.0.1", "host to listen to")
var port = flag.String("p", "8001", "port to listen to")
var verb = flag.Bool("verb", true, "verbosity")
var skipHidden = flag.Bool("k", true, "skip hidden files")
var initPath = ""
var css = `css_will_be_here` // js will be embedded here
var jsTag = `js_will_be_here` // id.
var units = [8]string{"k", "M", "G", "T", "P", "E", "Z", "Y"}
type rpcCall struct {
Call string `json:"call"`
Args []string `json:"args"`
}
func logVerb(s ...interface{}) {
if *verb {
log.Println(s)
}
}
func sizeToString(bytes float64) string {
if bytes == 0 {
return "0"
}
var u = -1
for {
bytes = bytes / 1024
u++
if bytes < 1024 {
break
}
}
return strconv.FormatFloat(bytes, 'f', 1, 64) + units[u]
}
func row(name string, href string, size float64, ext string) string {
if strings.HasPrefix(href, "/") {
href = strings.Replace(href, "/", "", 1)
}
return `<tr>
<td><i class="btn icon icon-` + strings.ToLower(ext) + ` icon-blank"></i></td>
<td class="file-size"><code>` + sizeToString(size) + `</code></td>
<td class="arrow"><i class="arrow-icon"></i></td>
<td class="display-name"><a class="list-links" onclick="return onClickLink(event)" href="` + url.PathEscape(href) + `">` + name + `</a></td>
</tr>`
}
func extraFolder(loc string) string {
if !strings.HasSuffix(loc, "/") {
loc = loc + "/"
}
if !strings.HasPrefix(loc, "/") {
loc = "/" + loc
}
return `<a class="ic fav icon-large-folder" onclick="return onClickLink(event)" href="` + loc + `">` + loc + `</a>`
}
func replyList(w http.ResponseWriter, path string) {
if !strings.HasSuffix(path, "/") {
path += "/"
}
var head = `<!doctype html><html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>` + html.EscapeString(path) + `</title>
<link href="data:image/png;base64,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" rel="icon" type="image/png"/>
<script>window.onload = function(){` + jsTag + `}</script>
<style type="text/css">` + css + `</style>
</head>
<body>
<div class="icHolder"><div style="display:none;" class="ic icon-large-images" onclick="window.picsToggle()"></div>
<div class="ic icon-large-folder" onclick="window.mkdirBtn()"></div>` + extraFolder("/hols/aaa") + `</div>
<div id="pics" style="display:none;"> <div onclick="window.picsToggle()" id="picsToggleCinema"></div> <img onclick="window.picsNav()" id="picsHolder"/> <span id="picsLabel"></span> </div>
<div id="drop-grid"> Drop here to upload </div>
<h1>.` + html.EscapeString(path) + `</h1>
<table>`
_files, err := ioutil.ReadDir(initPath + path)
check(err)
if path != "/" {
head += row("../", "../", 0, "folder")
}
var dirs = ""
var files = ""
for _, el := range _files {
var name = el.Name()
if *skipHidden && strings.HasPrefix(name, ".") {
continue
}
if el.IsDir() {
dirs += row(name+"/", name, 0, "folder")
} else {
var sl = strings.Split(name, ".")
var ext = sl[len(sl)-1]
files += row(name, name, float64(el.Size()), ext)
}
}
var resp = head + dirs + files + `</table>
<div id="progressBars"></div>
<br><address><a href="https://github.com/pldubouilh/gossa">Gossa 🎶</a></address>
</body></html>`
w.Write([]byte(resp))
}
func doContent(w http.ResponseWriter, r *http.Request) {
path := html.UnescapeString(r.URL.Path)
if strings.Contains(path, "/favicon.ico") {
w.Write([]byte(" "))
return
}
fullPath, errPath := checkPath(path)
stat, errStat := os.Stat(fullPath)
if errStat != nil || errPath != nil {
logVerb("Error", errStat, errPath)
w.Write([]byte("error"))
return
}
if stat.IsDir() {
logVerb("Get list", fullPath)
replyList(w, path)
} else {
logVerb("Get file", fullPath)
fs.ServeHTTP(w, r)
}
}
func upload(w http.ResponseWriter, r *http.Request) {
unescaped, _ := url.PathUnescape(r.Header.Get("gossa-path"))
fullPath, err := checkPath(unescaped)
logVerb("Up", err, fullPath)
if err != nil {
w.Write([]byte("error"))
return
}
reader, _ := r.MultipartReader()
part, _ := reader.NextPart()
dst, _ := os.Create(fullPath)
io.Copy(dst, part)
logVerb("Done upping", fullPath)
w.Write([]byte("ok"))
}
func rpc(w http.ResponseWriter, r *http.Request) {
var err error
bodyBytes, _ := ioutil.ReadAll(r.Body)
bodyString := string(bodyBytes)
var payload rpcCall
json.Unmarshal([]byte(bodyString), &payload)
for i := range payload.Args {
payload.Args[i], err = checkPath(payload.Args[i])
if err != nil {
logVerb("Cant read path", err, payload)
w.Write([]byte("error"))
return
}
}
if payload.Call == "mkdirp" {
err = os.MkdirAll(payload.Args[0], os.ModePerm)
} else if payload.Call == "mv" {
err = os.Rename(payload.Args[0], payload.Args[1])
}
logVerb("RPC", err, payload)
w.Write([]byte("ok"))
}
func checkPath(p string) (string, error) {
p = filepath.Join(initPath, p)
fp, err := filepath.Abs(p)
if err != nil || !strings.HasPrefix(fp, initPath) {
return "", errors.New("error")
}
return fp, nil
}
func main() {
flag.Parse()
if len(flag.Args()) == 0 {
initPath = "."
} else {
initPath = flag.Args()[0]
}
var err error
initPath, err = filepath.Abs(initPath)
check(err)
var hostString = *host + ":" + *port
fmt.Println("Gossa startig on directory " + initPath)
fmt.Println("Listening on http://" + hostString)
var root = http.Dir(initPath)
fs = http.StripPrefix("/", http.FileServer(root))
http.HandleFunc("/rpc", rpc)
http.HandleFunc("/post", upload)
http.HandleFunc("/", doContent)
err = http.ListenAndServe(hostString, nil)
check(err)
}