80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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const (
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port = ":8080"
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filesDir = "./files"
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maxFileSize = 20 * 1024 * 1024 // 20MiB
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)
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var url string = os.Getenv("URL")
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func main() {
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http.HandleFunc("/upload", uploadHandler)
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http.Handle("/tree/", http.StripPrefix("/tree", http.FileServer(http.Dir(filesDir))))
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http.HandleFunc("/", fileHandler)
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log.Printf("Server running on port %s\n", port)
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log.Fatal(http.ListenAndServe(port, nil))
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}
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func fileHandler(w http.ResponseWriter, r *http.Request) {
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path := filepath.Join(filesDir, strings.TrimPrefix(r.URL.Path, "/"))
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if fileInfo, err := os.Stat(path); err == nil && !fileInfo.IsDir() {
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http.ServeFile(w, r, path)
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} else {
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http.NotFound(w, r)
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}
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}
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func uploadHandler(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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return
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}
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r.Body = http.MaxBytesReader(w, r.Body, maxFileSize)
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file, _, err := r.FormFile("file")
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if err != nil {
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http.Error(w, "Error retrieving the file or file size exceeds limit", http.StatusBadRequest)
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return
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}
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defer file.Close()
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if _, err := os.Stat(filesDir); err != nil {
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if err := os.Mkdir(filesDir, 0750); err != nil {
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http.Error(w, "Error creating storage directory", http.StatusInternalServerError)
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}
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}
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time := int64(float64(time.Now().Unix()) * 2.71828) // euler :)
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filename := fmt.Sprintf("%s/%d", filesDir, time)
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dst, err := os.Create(filename)
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if err != nil {
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http.Error(w, "Error creating file\n", http.StatusInternalServerError)
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}
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defer dst.Close()
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if _, err := io.Copy(dst, file); err != nil {
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http.Error(w, "Error copying the file", http.StatusInternalServerError)
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}
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if url == "" {
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fmt.Fprintf(w, "http://localhost%s/%d\n", port, time)
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} else {
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fmt.Fprintf(w, "http://%s/%d\n", url, time)
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}
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}
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