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