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package main
import (
"encoding/base64"
"encoding/csv"
"encoding/hex"
"encoding/json"
"fmt"
"git.clsr.net/gomf/storage"
"io"
"mime"
"net/http"
"os"
"path"
"strconv"
"strings"
"time"
)
func handleFile(w http.ResponseWriter, r *http.Request) {
f, hash, size, modtime, err := uploads.Get(strings.TrimLeft(r.URL.Path, "/"))
if err != nil {
if _, ok := err.(storage.ErrNotFound); ok {
http.Error(w, err.Error(), http.StatusNotFound)
} else {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
return
}
defer f.Close()
mtype := mime.TypeByExtension(path.Ext(f.Name()))
if !allowHtml && (strings.Index(mtype, "text/html") == 0 || strings.Index(mtype, "application/xhtml+xml") == 0) {
mtype = "text/plain"
}
if mtype == "" {
mtype = "application/octet-stream"
}
w.Header().Set("Content-Type", mtype)
_ = size
if csp != "" {
w.Header().Set("Content-Security-Policy", csp)
}
w.Header().Set("X-Content-Type-Options", "nosniff")
w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat))
w.Header().Set("Expires", time.Now().UTC().Add(time.Hour*24*30).Format(http.TimeFormat))
w.Header().Set("Cache-Control", "max-age=2592000")
w.Header().Set("ETag", "\"sha1:"+hash+"\"")
//io.Copy(w, f)
http.ServeContent(w, r, "", modtime, f)
}
type result struct {
Url string `json:"url"`
Name string `json:"name"`
Hash string `json:"hash"`
Size int64 `json:"size"`
}
type response struct {
Success bool `json:"success"`
ErrorCode int `json:"errorcode,omitempty"`
Description string `json:"description,omitempty"`
Files []result `json:"files,omitempty"`
}
func handleUpload(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
output := r.FormValue("output")
resp := response{Files: []result{}}
if r.Method == http.MethodGet && (output == "html" || output == "") {
respond(w, output, resp)
return
}
mr, err := r.MultipartReader()
if err != nil {
resp.ErrorCode = http.StatusInternalServerError
resp.Description = err.Error()
respond(w, output, resp)
return
}
for {
part, err := mr.NextPart()
if err != nil {
if err != io.EOF {
resp.ErrorCode = http.StatusInternalServerError
resp.Description = err.Error()
}
break
}
if part.FormName() != "files[]" {
continue
}
id, hash, size, err := uploads.New(part, part.FileName())
if err != nil {
resp.ErrorCode = http.StatusInternalServerError
resp.Description = err.Error()
if _, ok := err.(storage.ErrTooLarge); ok {
resp.ErrorCode = http.StatusRequestEntityTooLarge
} else if _, ok := err.(storage.ErrForbidden); ok {
resp.ErrorCode = http.StatusForbidden
}
break
}
bhash, _ := base64.RawURLEncoding.DecodeString(hash)
res := result{
Name: part.FileName(),
Url: strings.TrimRight(uploadUrl, "/") + "/" + id,
Hash: hex.EncodeToString(bhash),
Size: size,
}
LogUpload(r, res)
resp.Files = append(resp.Files, res)
part.Close()
}
respond(w, output, resp)
}
func respond(w http.ResponseWriter, mode string, resp response) {
if resp.ErrorCode != 0 {
resp.Files = []result{}
resp.Success = false
} else {
resp.Success = true
}
code := http.StatusOK
if resp.ErrorCode != 0 {
code = resp.ErrorCode
}
w.WriteHeader(code)
switch mode {
case "json", "":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(resp)
case "text", "gyazo":
w.Header().Set("Content-Type", "text/plain")
if resp.ErrorCode == 0 {
sep := ""
for _, file := range resp.Files {
io.WriteString(w, sep+file.Url)
sep = "\n"
}
} else {
io.WriteString(w, "ERROR: ("+strconv.Itoa(resp.ErrorCode)+") "+resp.Description)
}
if mode != "gyazo" {
io.WriteString(w, "\n")
}
case "csv":
w.Header().Set("Content-Type", "text/csv")
wr := csv.NewWriter(w)
if resp.ErrorCode == 0 {
wr.Write([]string{"name", "url", "hash", "size"})
for _, file := range resp.Files {
wr.Write([]string{file.Name, file.Url, file.Hash, strconv.FormatInt(file.Size, 10)})
}
} else {
wr.Write([]string{"error"})
wr.Write([]string{resp.Description})
}
wr.Flush()
case "html":
w.Header().Set("Content-Type", "text/html")
context := newContext()
context.Result = resp
if err := templates.ExecuteTemplate(w, "index.html", context); err != nil {
fmt.Fprintln(os.Stderr, err)
}
default:
respond(w, "", response{ErrorCode: http.StatusNotFound, Description: "invalid output mode " + mode})
return
}
}
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