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|
package main
import (
"flag"
"fmt"
"math/rand"
"net/http"
"strings"
"time"
)
var storage *Storage
var (
uploadUrl string
uploadHost string
siteName string
contactMail string
abuseMail string
csp string
hsts bool
allowHtml bool
cors bool
redirectHttps bool
)
func handle(w http.ResponseWriter, r *http.Request) {
if cors {
w.Header().Set("Access-Control-Allow-Origin", "*")
}
if hsts {
w.Header().Set("Strict-Transport-Security", "max-age=15552000")
}
if redirectHttps && r.TLS == nil && r.Host != "" {
targ := &*r.URL
targ.Host = r.Host
targ.Scheme = "https"
http.Redirect(w, r, targ.String(), http.StatusFound)
return
}
if r.Method == http.MethodGet || r.Method == http.MethodPost || r.Method == http.MethodHead {
for _, host := range strings.Split(uploadHost, ",") {
if r.Host == host {
handleFile(w, r)
return
}
}
http.DefaultServeMux.ServeHTTP(w, r)
} else {
w.Header().Set("Allow", "POST, HEAD, OPTIONS, GET")
if r.Method != http.MethodOptions {
http.Error(w, "The method is not allowed for the requested URL.", http.StatusMethodNotAllowed)
}
}
}
func main() {
flag.StringVar(&uploadUrl, "upload-url", "", "URL to serve uploads from")
flag.StringVar(&uploadHost, "upload-host", "", "comma-separated list of hosts to serve uploads on")
flag.StringVar(&siteName, "name", "Gomf", "website name")
flag.StringVar(&contactMail, "contact", "contact@example.com", "contact email address")
flag.StringVar(&abuseMail, "abuse", "abuse@example.com", "abuse email address")
flag.StringVar(&csp, "csp", "default-src 'none'; media-src 'self'", "the Content-Security-Policy header for files; blank to disable")
flag.BoolVar(&hsts, "hsts", false, "enable HSTS")
flag.BoolVar(&allowHtml, "allow-html", false, "serve (X)HTML uploads with (X)HTML filetypes")
flag.BoolVar(&cors, "cors", false, "enable CORS and allow all origins")
flag.BoolVar(&redirectHttps, "redirect-https", false, "redirect HTTP traffic to HTTPS")
listenHttp := flag.String("http", "localhost:8080", "address to listen on for HTTP")
listenHttps := flag.String("https", "", "address to listen on for HTTPS")
cert := flag.String("cert", "", "path to TLS certificate (for HTTPS)")
key := flag.String("key", "", "path to TLS key (for HTTPS)")
maxSize := flag.Int64("max-size", DefaultMaxSize, "max filesize in bytes")
filterMime := flag.String("filter-mime", "application/x-dosexec,application/x-msdos-program", "comma-separated list of filtered MIME types")
filterExt := flag.String("filter-ext", "exe,dll,msi,scr,com,pif", "comma-separated list of filtered file extensions")
whitelist := flag.Bool("whitelist", false, "use filter as a whitelist instead of blacklist")
grill := flag.Bool("grill", false, "enable grills")
idLength := flag.Int("id-length", DefaultIdLength, "length of uploaded file IDs")
idCharset := flag.String("id-charset", "", "charset for uploaded file IDs (default lowercase letters a-z)")
flag.Parse()
rand.Seed(time.Now().UnixNano())
initWebsite()
storage = NewStorage("upload")
storage.FilterExt = strings.Split(*filterExt, ",")
storage.FilterMime = strings.Split(*filterMime, ",")
storage.Whitelist = *whitelist
storage.IdLength = *idLength
storage.MaxSize = *maxSize
if *idCharset != "" {
storage.IdCharset = *idCharset
}
http.HandleFunc("/upload.php", handleUpload)
http.Handle("/u/", http.StripPrefix("/u/", http.HandlerFunc(handleFile)))
if *grill {
http.HandleFunc("/grill.php", handleGrill)
}
if uploadUrl == "" {
if uploadHost != "" {
host := strings.Split(uploadHost, ",")[0]
if *listenHttps != "" {
uploadUrl = "https://" + host + "/"
} else if *listenHttp != "" {
uploadUrl = "http://" + host + "/"
}
} else {
if *listenHttps != "" {
uploadUrl = "https://" + *listenHttps + "/u/"
} else if *listenHttp != "" {
uploadUrl = "http://" + *listenHttp + "/u/"
}
}
fmt.Printf("using %q as uploaded file URL\n", uploadUrl)
}
exit := true
if *listenHttp != "" {
exit = false
fmt.Printf("listening on http://%s/\n", *listenHttp)
go func() {
panic(http.ListenAndServe(*listenHttp, http.HandlerFunc(handle)))
}()
}
if *listenHttps != "" {
exit = false
fmt.Printf("listening on https://%s/\n", *listenHttps)
go func() {
panic(http.ListenAndServeTLS(*listenHttps, *cert, *key, http.HandlerFunc(handle)))
}()
}
if !exit {
select {}
}
}
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