466 lines
15 KiB
Go
466 lines
15 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"github.com/dballard/transmet/categories"
|
|
"github.com/dballard/transmet/news"
|
|
"github.com/dballard/transmet/user"
|
|
"github.com/gorilla/mux"
|
|
"github.com/gorilla/sessions"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"path"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
txtTemplate "text/template"
|
|
"time"
|
|
)
|
|
|
|
func GetFlashes(session *sessions.Session) map[string]interface{} {
|
|
var flashes = make(map[string]interface{})
|
|
flashes["error"] = session.Flashes(flash_err)
|
|
flashes["info"] = session.Flashes(flash_info)
|
|
return flashes
|
|
}
|
|
|
|
func sessionWipe(session *sessions.Session) {
|
|
session.Values = make(map[interface{}]interface{})
|
|
}
|
|
|
|
func initSessionUser(r *http.Request) (*user.User, *sessions.Session) {
|
|
// TODO verify ssl session
|
|
session, _ := store.Get(r, "c_user")
|
|
if session.Values["username"] == nil {
|
|
return nil, session
|
|
}
|
|
|
|
return user.NewUserFromUsername(db, session.Values["username"].(string)), session
|
|
}
|
|
|
|
// wrapper for handlers requiring a User
|
|
func userHandler(next func(http.ResponseWriter, *http.Request, *user.User, *sessions.Session)) func(http.ResponseWriter, *http.Request) {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
user, session := initSessionUser(r)
|
|
if user == nil {
|
|
http.Redirect(w, r, "/login", http.StatusFound)
|
|
} else {
|
|
next(w, r, user, session)
|
|
}
|
|
}
|
|
}
|
|
|
|
// wrapper for handlers forking on GET and POST
|
|
// r.HandleFunc("/login", getPostHandler(LoginFormHandler, LoginPostHandler))
|
|
func getPostHandler(getFn, postFn func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request) {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method == "GET" {
|
|
getFn(w, r)
|
|
} else { // POST
|
|
postFn(w, r)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Log in page handler
|
|
func LoginFormHandler(w http.ResponseWriter, r *http.Request) {
|
|
session, _ := store.Get(r, "c_user")
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
|
|
ShowTemplate("login", w, r, map[string]interface{}{"flashes": flashes})
|
|
}
|
|
|
|
// handler for login POST
|
|
// TODO: proper per account and client flood control rate limiting
|
|
// currently weak per call slow down is by-passable at scale
|
|
func LoginPostHandler(w http.ResponseWriter, r *http.Request) {
|
|
fmt.Println("LoginPostHandler()")
|
|
time.Sleep(500 * time.Millisecond) // WEAK poor mans rate limiting for logins
|
|
r.ParseForm()
|
|
username := r.PostFormValue("username")
|
|
// lookup user
|
|
password := r.PostFormValue("password")
|
|
user := user.NewUserFromAuth(db, username, password)
|
|
if user != nil {
|
|
session, _ := store.Get(r, "c_user")
|
|
session.Values["username"] = user.Username
|
|
session.Save(r, w)
|
|
if r.URL.Query().Get("url") != "" {
|
|
http.Redirect(w, r, "/add?"+r.URL.RawQuery, http.StatusFound)
|
|
}
|
|
http.Redirect(w, r, "/", http.StatusFound)
|
|
} else {
|
|
time.Sleep(500 * time.Millisecond) // WEAK bypassable poor mans rate limiting for failed logins
|
|
session, _ := store.Get(r, "c_user")
|
|
session.AddFlash("Username or password", flash_err)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/login?"+r.URL.RawQuery, http.StatusFound)
|
|
}
|
|
}
|
|
|
|
// logout POST handler
|
|
func LogoutHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
//session.Options = &sessions.Options{MaxAge: -1}
|
|
sessionWipe(session)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/", http.StatusFound)
|
|
}
|
|
|
|
func getUrlTitle(url string) string {
|
|
resp, err := http.Get(url)
|
|
if err != nil {
|
|
fmt.Println("Error looking up link", url, ":", err)
|
|
} else {
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
fmt.Println("Error reading link", url, ":", err)
|
|
} else {
|
|
re := regexp.MustCompile("< *[Tt][Ii][Tt][Ll][Ee] *>(.*)</ *[Tt][Ii][Tt][Ll][Ee] *>")
|
|
title := re.FindStringSubmatch(string(body))
|
|
if title != nil {
|
|
return strings.TrimSpace(title[1])
|
|
}
|
|
}
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// ?url=
|
|
func addFormHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
categories.LoadCategories(db)
|
|
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
|
|
var url = r.URL.Query().Get("url")
|
|
reHttp := regexp.MustCompile("^https?://")
|
|
if url != "" && !reHttp.Match([]byte(url)) {
|
|
url = "http://" + url
|
|
}
|
|
|
|
title := r.URL.Query().Get("title")
|
|
if title == "" && url != "" {
|
|
title = getUrlTitle(url)
|
|
}
|
|
|
|
popup := r.URL.Query().Get("popup")
|
|
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "add", "user": user, "flashes": flashes, "link": url, "categories": categories.CategoriesTree, "title": title, "popup": popup, "category_id": -1})
|
|
}
|
|
|
|
func addPostHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
news := news.News{}
|
|
|
|
news.Title = r.FormValue("title")
|
|
news.Notes = r.FormValue("notes")
|
|
news.Url = r.FormValue("link")
|
|
popup := r.FormValue("popup")
|
|
category_id, err := strconv.Atoi(r.FormValue("category"))
|
|
if err != nil {
|
|
var flashes = make(map[string]interface{})
|
|
flashes["error"] = []string{"Category required: " + err.Error()}
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "add", "user": user, "flashes": flashes, "link": news.Url, "categories": categories.CategoriesTree, "title": news.Title, "popup": popup, "notes": news.Notes, "category_id": news.Category_id})
|
|
return
|
|
}
|
|
news.Category_id = category_id
|
|
|
|
err = news.Insert(db)
|
|
if err != nil {
|
|
var flashes = make(map[string]interface{})
|
|
flashes["error"] = []string{"Error saving news: " + err.Error()}
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "add", "user": user, "flashes": flashes, "link": news.Url, "categories": categories.CategoriesTree, "title": news.Title, "popup": popup, "notes": news.Notes, "category_id": news.Category_id})
|
|
return
|
|
} else {
|
|
session.AddFlash("Added news \""+news.Title+"\"", flash_info)
|
|
session.Save(r, w)
|
|
if popup == "1" {
|
|
http.Redirect(w, r, "/news/added", http.StatusFound)
|
|
} else {
|
|
http.Redirect(w, r, "/", http.StatusFound)
|
|
}
|
|
}
|
|
}
|
|
|
|
func editFormHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
categories.LoadCategories(db)
|
|
|
|
flashes := GetFlashes(session)
|
|
|
|
id, idErr := strconv.Atoi(r.FormValue("id"))
|
|
if idErr != nil {
|
|
session.AddFlash("Could not understand news id", flash_err)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/news", http.StatusFound)
|
|
return
|
|
}
|
|
|
|
newsItem, err := news.Get(db, id)
|
|
if err != nil {
|
|
session.AddFlash("Could not load news item "+strconv.Itoa(id), flash_err)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/news", http.StatusFound)
|
|
return
|
|
}
|
|
|
|
session.Save(r, w)
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "edit", "user": user, "flashes": flashes, "categories": categories.CategoriesTree, "link": newsItem.Url, "title": newsItem.Title, "notes": newsItem.Notes, "popup": false, "category_id": newsItem.Category_id, "id": newsItem.Id()})
|
|
return
|
|
}
|
|
|
|
func editPostHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
news_id, err := strconv.Atoi(r.FormValue("id"))
|
|
if err != nil {
|
|
session.AddFlash("Error trying to save news item", flash_err)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/news", http.StatusFound)
|
|
return
|
|
}
|
|
|
|
news, err := news.Get(db, news_id)
|
|
if err != nil {
|
|
fmt.Println("Error trying to edit news item that doesn't exist")
|
|
session.AddFlash("Error trying to save news item", flash_err)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/news", http.StatusFound)
|
|
return
|
|
}
|
|
|
|
news.Title = r.FormValue("title")
|
|
news.Notes = r.FormValue("notes")
|
|
news.Url = r.FormValue("link")
|
|
|
|
category_id, err := strconv.Atoi(r.FormValue("category"))
|
|
if err != nil {
|
|
var flashes = make(map[string]interface{})
|
|
flashes["error"] = []string{"Category required: " + err.Error()}
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "edit", "user": user, "flashes": flashes, "link": news.Url, "categories": categories.CategoriesTree, "title": news.Title, "popup": false, "notes": news.Notes, "category_id": news.Category_id, "id": news.Id()})
|
|
return
|
|
}
|
|
news.Category_id = category_id
|
|
|
|
err = news.Update(db)
|
|
if err != nil {
|
|
var flashes = make(map[string]interface{})
|
|
flashes["error"] = []string{"Error saving news: " + err.Error()}
|
|
ShowTemplate("post", w, r, map[string]interface{}{"mode": "edit", "user": user, "flashes": flashes, "link": news.Url, "categories": categories.CategoriesTree, "title": news.Title, "popup": false, "notes": news.Notes, "category_id": news.Category_id, "id": news.Id()})
|
|
return
|
|
} else {
|
|
session.AddFlash("Updated news \""+news.Title+"\"", flash_info)
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/", http.StatusFound)
|
|
}
|
|
}
|
|
|
|
func templateFormHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
|
|
news, count, err := news.Unexported(db)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
var templateBuf bytes.Buffer
|
|
template, err := txtTemplate.ParseFiles("templates/html_template.txt")
|
|
if err != nil {
|
|
fmt.Println("Error processing html_tempalte:", err)
|
|
}
|
|
err = template.Execute(&templateBuf, map[string]interface{}{"news": news})
|
|
if err != nil {
|
|
fmt.Println("Exec err: ", err)
|
|
}
|
|
|
|
ShowTemplate("export", w, r, map[string]interface{}{"user": user, "flashes": flashes, "template": &templateBuf, "count": count, "url": config.Url})
|
|
}
|
|
|
|
func exportHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
err := news.MarkExported(db)
|
|
|
|
if err != nil {
|
|
session.AddFlash("Error marking last batch of news exported", flash_err)
|
|
} else {
|
|
session.AddFlash("Last batch of news marked exported", flash_info)
|
|
}
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/export", http.StatusFound)
|
|
}
|
|
|
|
func addedHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
ShowTemplate("added", w, r, map[string]interface{}{"user": user, "flashes": flashes})
|
|
}
|
|
|
|
func deleteHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
id, idErr := strconv.Atoi(mux.Vars(r)["id"])
|
|
|
|
if idErr != nil {
|
|
session.AddFlash("Invalid news to delete", flash_err)
|
|
} else {
|
|
err := news.Delete(db, id)
|
|
if err != nil {
|
|
session.AddFlash("Error commiting to Database", flash_err)
|
|
} else {
|
|
session.AddFlash("Deleted news post", flash_info)
|
|
}
|
|
}
|
|
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/", http.StatusFound)
|
|
}
|
|
|
|
func categoriesFormHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
categories.LoadCategories(db)
|
|
|
|
ShowTemplate("categories", w, r, map[string]interface{}{"user": user, "flashes": flashes, "categories": categories.CategoriesTree})
|
|
}
|
|
|
|
func categoriesPostHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
http.Redirect(w, r, "/categories", http.StatusFound)
|
|
}
|
|
|
|
func categoryFromReqArg(arg string) *categories.Category {
|
|
if cid, err := strconv.Atoi(arg); err != nil {
|
|
return nil
|
|
} else if category, ok := categories.CategoriesFlat[cid]; !ok {
|
|
return nil
|
|
} else {
|
|
return category
|
|
}
|
|
}
|
|
|
|
func categoryChangeParentHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
categories.LoadCategories(db)
|
|
category := categoryFromReqArg(r.FormValue("cid"))
|
|
parent := categoryFromReqArg(r.FormValue("parent"))
|
|
|
|
if category == nil {
|
|
session.AddFlash("Invalid category", flash_err)
|
|
} else if parent != nil && category.Id == parent.Id {
|
|
session.AddFlash("Cannot set category parent to itself", flash_err)
|
|
} else {
|
|
err := category.ChangeParent(db, parent)
|
|
if err != nil {
|
|
session.AddFlash("Error commiting to Database", flash_err)
|
|
} else {
|
|
session.AddFlash("Changed category parent", flash_info)
|
|
}
|
|
}
|
|
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/categories", http.StatusFound)
|
|
}
|
|
|
|
func categoryAddHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
name := r.FormValue("name")
|
|
parent, perr := strconv.Atoi(r.FormValue("parent"))
|
|
|
|
if perr != nil {
|
|
parent = -1
|
|
}
|
|
if name == "" {
|
|
session.AddFlash("Invalid category name", flash_err)
|
|
} else {
|
|
err := categories.Add(db, name, parent)
|
|
if err != nil {
|
|
session.AddFlash("Error commiting to Database", flash_err)
|
|
} else {
|
|
session.AddFlash("Added category", flash_info)
|
|
}
|
|
}
|
|
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/categories", http.StatusFound)
|
|
}
|
|
|
|
func categoryDeleteHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
id, idErr := strconv.Atoi(r.FormValue("id"))
|
|
|
|
if idErr != nil {
|
|
session.AddFlash("Invalid category to delete", flash_err)
|
|
} else {
|
|
err := categories.Delete(db, id)
|
|
if err != nil {
|
|
session.AddFlash("Error commiting to Database", flash_err)
|
|
} else {
|
|
session.AddFlash("Deleted category", flash_info)
|
|
}
|
|
}
|
|
|
|
session.Save(r, w)
|
|
http.Redirect(w, r, "/categories", http.StatusFound)
|
|
}
|
|
|
|
func newsFormHandler(w http.ResponseWriter, r *http.Request, user *user.User, session *sessions.Session) {
|
|
flashes := GetFlashes(session)
|
|
session.Save(r, w)
|
|
var offset = 0
|
|
var amount = 100
|
|
|
|
argOffset, eOffset := strconv.Atoi(r.FormValue("offset"))
|
|
if eOffset == nil {
|
|
offset = amount * argOffset
|
|
}
|
|
|
|
news, count, err := news.LoadPage(db, offset, amount)
|
|
if err != nil {
|
|
session.AddFlash("Error loading news", flash_err)
|
|
}
|
|
|
|
ShowTemplate("news", w, r, map[string]interface{}{"user": user, "flashes": flashes, "news": news, "count": count, "categories": categories.CategoriesFlat})
|
|
}
|
|
|
|
func ServeFileHandler(res http.ResponseWriter, req *http.Request) {
|
|
fname := path.Base(req.URL.Path)
|
|
http.ServeFile(res, req, "./"+fname)
|
|
}
|
|
|
|
func init_route_handlers() *mux.Router {
|
|
r := mux.NewRouter()
|
|
|
|
// Basic Handle - static files - no CSRF wrapper
|
|
r.PathPrefix("/js/").Handler(http.StripPrefix("/js/", http.FileServer(http.Dir("js/"))))
|
|
r.PathPrefix("/css/").Handler(http.StripPrefix("/css/", http.FileServer(http.Dir("css/"))))
|
|
r.PathPrefix("/fonts/").Handler(http.StripPrefix("/fonts", http.FileServer(http.Dir("fonts/"))))
|
|
r.HandleFunc("/favicon.ico", ServeFileHandler)
|
|
|
|
rGet := r.Methods("GET").Subrouter()
|
|
rPost := r.Methods("POST").Subrouter()
|
|
|
|
rGet.HandleFunc("/login", LoginFormHandler)
|
|
rPost.HandleFunc("/login", LoginPostHandler)
|
|
|
|
rPost.HandleFunc("/logout", userHandler(LogoutHandler))
|
|
|
|
rGet.HandleFunc("/news/add", userHandler(addFormHandler))
|
|
rPost.HandleFunc("/news/add", userHandler(addPostHandler))
|
|
|
|
rGet.HandleFunc("/", userHandler(newsFormHandler))
|
|
rGet.HandleFunc("/news", userHandler(newsFormHandler))
|
|
|
|
rGet.HandleFunc("/news/export", userHandler(templateFormHandler))
|
|
rPost.HandleFunc("/news/export", userHandler(exportHandler))
|
|
|
|
rGet.HandleFunc("/news/added", userHandler(addedHandler))
|
|
|
|
// TODO to post and {id}
|
|
rPost.HandleFunc("/news/{id:[0-9]+}/delete", userHandler(deleteHandler))
|
|
// TODO post {id} ?
|
|
rGet.HandleFunc("/news/{id:[0-9]+}/edit", userHandler(editFormHandler))
|
|
rPost.HandleFunc("/news/{id:[0-9]+}/edit", userHandler(editPostHandler))
|
|
|
|
rGet.HandleFunc("/categories", userHandler(categoriesFormHandler))
|
|
rPost.HandleFunc("/caegories", userHandler(categoriesPostHandler))
|
|
|
|
// TODO post, add {id}
|
|
rPost.HandleFunc("/categories/change-parent", userHandler(categoryChangeParentHandler))
|
|
rPost.HandleFunc("/categories/add", userHandler(categoryAddHandler))
|
|
rPost.HandleFunc("/categories/delete", userHandler(categoryDeleteHandler))
|
|
|
|
return r
|
|
}
|