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mumbledj/web.go
2015-07-30 15:54:46 +01:00

135 lines
3.3 KiB
Go

package main
import (
"fmt"
"html"
"html/template"
"io/ioutil"
"math/rand"
"net/http"
"strconv"
"strings"
"time"
"github.com/layeh/gumble/gumble"
)
type WebServer struct {
port int
client_token map[*gumble.User]string
token_client map[string]*gumble.User
}
type Page struct {
siteUrl string
token string
}
var external_ip = ""
func NewWebServer(port int) *WebServer {
return &WebServer{
port: port,
client_token: make(map[*gumble.User]string),
token_client: make(map[string]*gumble.User),
}
}
func (web *WebServer) makeWeb() {
http.HandleFunc("/", web.homepage)
http.HandleFunc("/add", web.add)
http.HandleFunc("/volume", web.volume)
http.HandleFunc("/skip", web.skip)
http.ListenAndServe(":"+strconv.Itoa(web.port), nil)
rand.Seed(time.Now().UnixNano())
}
func (web *WebServer) homepage(w http.ResponseWriter, r *http.Request) {
var uname = web.token_client[r.URL.Path[1:]]
if uname == nil {
fmt.Fprintf(w, "Invalid Token")
} else {
t, err := template.ParseFiles("~/.mumbledj/web/index.html")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
err = t.Execute(w, &Page{"http://" + getIP() + ":" + strconv.Itoa(web.port) + "/", r.URL.Path[1:]})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
}
func (web *WebServer) add(w http.ResponseWriter, r *http.Request) {
var uname = web.token_client[r.FormValue("token")]
if uname == nil {
fmt.Fprintf(w, "Invalid Token")
} else {
add(uname, html.UnescapeString(r.FormValue("value")))
}
}
func (web *WebServer) volume(w http.ResponseWriter, r *http.Request) {
var uname = web.token_client[r.FormValue("token")]
if uname == nil {
fmt.Fprintf(w, "Invalid Token")
} else {
var url = html.UnescapeString(r.FormValue("value"))
add(uname, url)
}
}
func (web *WebServer) skip(w http.ResponseWriter, r *http.Request) {
var uname = web.token_client[r.FormValue("token")]
if uname == nil {
fmt.Fprintf(w, "Invalid Token")
} else {
var url = html.UnescapeString(r.FormValue("value"))
add(uname, url)
}
}
func (website *WebServer) GetWebAddress(user *gumble.User) {
Verbose("Port number: " + strconv.Itoa(web.port))
if web.client_token[user] != "" {
web.token_client[web.client_token[user]] = nil
}
// dealing with collisions
var firstLoop = true
for firstLoop || web.token_client[web.client_token[user]] != nil {
web.client_token[user] = randSeq(10)
firstLoop = false
}
web.token_client[web.client_token[user]] = user
dj.SendPrivateMessage(user, fmt.Sprintf(WEB_ADDRESS, getIP(), web.client_token[user], getIP(), web.client_token[user]))
}
// Gets the external ip address for the server
func getIP() string {
if external_ip != "" {
return external_ip
} else {
if response, err := http.Get("http://myexternalip.com/raw"); err == nil {
defer response.Body.Close()
if response.StatusCode == 200 {
if body, err := ioutil.ReadAll(response.Body); err == nil {
external_ip = strings.TrimSpace(string(body))
}
}
}
return external_ip
}
}
// Generates a pseudorandom string of characters
func randSeq(n int) string {
var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
b := make([]rune, n)
for i := range b {
b[i] = letters[rand.Intn(len(letters))]
}
return string(b)
}