/
wiki.go
345 lines (306 loc) · 13.3 KB
/
wiki.go
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package main
import (
"fmt"
"net/http"
"io/ioutil"
"regexp"
"errors"
"github.com/russross/blackfriday"
"bytes"
"strings"
"os"
)
type Page struct {
Title string
Body []byte
}
var wikiname = "m33w#Paste"
var css_ = []byte("#")
var default_ = []byte("#")
const lenPath = len("/view/")
//var templates = template.Must(template.ParseFiles("html/edit.html", "html/view.html"))
var titleValidator = regexp.MustCompile("^[a-zA-Z0-9_]+$")
func (p *Page) save() error {
filename := "pages/" + p.Title + ".txt"
return ioutil.WriteFile(filename, p.Body, 0600)
}
func loadPage(title string) (*Page, error) {
filename := "pages/" + title + ".txt"
body, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return &Page{Title: title, Body: body}, nil
}
func loadLib(title string) ([]byte) {
body, err := ioutil.ReadFile(title)
if err != nil {
return []byte("")
}
return body
}
/*****************
** VIEWS **
*****************/
func renderView(w http.ResponseWriter ,p *Page, r *http.Request, markdown bool) {
// Get Config from Body
var boder = bytes.Split(p.Body,[]byte("~![META]!~"))
// Replace Body with showable body
p.Body = boder[1]
if len(boder) > 1 {
// Now lets look at the config meta
var confer = bytes.Split(boder[0],[]byte("::"))
// Init some trash vars
var public_view = false
var public_edit = false
// And korrigate them
if bytes.Equal(confer[0],[]byte("true")) {
public_view = true
}
if bytes.Equal(confer[1],[]byte("true")) {
public_edit = true
}
// Get Password
var password = strings.TrimSpace(string(confer[2]))
// Print Default Body [HEAD PART]
fmt.Fprintf(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" +
"<head>\n" +
" <title>%s</title>\n" +
" <style type=\"text/css\">%s</style> \n " +
"</head>\n" +
"<body onload=\"document.getElementById('_password').focus();\">\n <div id='header'>\n <div class=\"right\"><a href='/'>%s</a></div>\n <h1><a href=\"/view/%s\">%s</a></h1>\n </div>\n", p.Title+" ~ "+wikiname, css_, wikiname, p.Title, p.Title)
if public_view || strings.TrimSpace(r.FormValue("password")) == password {
if markdown {
p.Body = blackfriday.MarkdownBasic(p.Body)
}
fmt.Fprintf(w, " <div id='content'>\n%s\n </div>\n", p.Body)
fmt.Fprintf(w, " <form action='/edit/%s' >",p.Title)
if public_edit {
fmt.Fprintf(w, " <div id='edit'><input type='hidden' name='password' value=''><input type='submit' value='Edit »'></div></form>")
} else if public_view == false || strings.TrimSpace(r.FormValue("password")) != "" {
fmt.Fprintf(w, " <div id='edit'><input type='hidden' name='password' value='%s'><input type='submit' value='Edit »'></div></form>",strings.TrimSpace(r.FormValue("password")))
} else {
fmt.Fprintf(w, " <div id='edit'><input type=\"password\" name=\"password\"><input type='submit' value='Edit »'></div></form>")
}
} else {
fmt.Fprintf(w, " <div id='content'><center><div id=\"error\"><div class=\"huge\">[</div><div id='error_container'><div class=\"big\">This Page is not public!</div><br>You think you are the owner?<br><br><form action='/view/%s' ><input type=\"password\" value=\"Password\" onFocus=\"if(this.value == 'Password'){ this.value = ''; }\" name=\"password\" id=\"password\"><input type=\"submit\" value='»'></form></div><div class=\"huge\">]</div></div></center></div>\n",p.Title)
}
fmt.Fprintf(w, "</body>\n</html>\n")
} else {
http.Redirect(w, r, "/view/Error", http.StatusFound)
}
}
func renderEdit(w http.ResponseWriter ,p *Page, r *http.Request, markdown bool) {
// Get Config from Body
var boder = bytes.Split(p.Body,[]byte("~![META]!~"))
// Replace Body with showable body
if len(boder) > 1 {
p.Body = boder[1]
// Now lets look at the config meta
var confer = bytes.Split(boder[0],[]byte("::"))
// Init some trash vars
var public_edit = false
var public_edit_ = ""
var public_view_ = ""
// And korrigate them
if bytes.Equal(confer[1],[]byte("true")) {
public_edit = true
public_edit_ = "checked"
}
if bytes.Equal(confer[0],[]byte("true")) {
public_view_ = "checked"
}
// Get Password
var password = strings.TrimSpace(string(confer[2]))
// Print Default Body [HEAD PART]
fmt.Fprintf(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" +
"<head>\n" +
" <title>%s</title>\n" +
" <style type=\"text/css\">%s</style> \n " +
" <script type='text/javascript'>function insertTab(a,b){var c=b.keyCode?b.keyCode:b.charCode?b.charCode:b.which;if(c==9&&!b.shiftKey&&!b.ctrlKey&&!b.altKey){var d=a.scrollTop;if(a.setSelectionRange){var e=a.selectionStart;var f=a.selectionEnd;a.value=a.value.substring(0,e)+\"\t\"+a.value.substr(f);a.setSelectionRange(e+1,e+1);a.focus()}else if(a.createTextRange){document.selection.createRange().text=\"\t\";b.returnValue=false}a.scrollTop=d;if(b.preventDefault){b.preventDefault()}return false}return true}</script>" +
"</head>\n" +
"<body>\n <div id='header'>\n <div class=\"right\"><a href='/'>%s</a></div>\n <h1>Edit: <a href=\"/view/%s\">%s</a></h1>\n </div>\n", p.Title+" ~ "+wikiname, css_, wikiname, p.Title, p.Title)
if public_edit || strings.TrimSpace(r.FormValue("password")) == password {
fmt.Fprintf(w, " <form action='/save/%s' >\n <div id='edit_text'><textarea onkeydown=\"insertTab(this, event);\" name='body'>%s</textarea></div>\n", p.Title, p.Body)
fmt.Fprintf(w, " \n <div id='edit_right'>")
fmt.Fprintf(w, " <div id='edit'>\n <input type='submit' class='long green' value='SAVE »'>\n<br/><br/>")
fmt.Fprintf(w, " <input type=\"checkbox\" name='public_view' %s> Public view?<br/>",public_view_)
fmt.Fprintf(w, " <input type=\"checkbox\" name='public_edit' %s> Public edit?<br/><br/>",public_edit_)
fmt.Fprintf(w, " <input type=\"hidden\" name='password_' value='%s'>",strings.TrimSpace(r.FormValue("password")))
fmt.Fprintf(w, " <fieldset><legend>New Password</legend><input type=\"password\" value='%s' name='new_password'></fieldset>",strings.TrimSpace(r.FormValue("password")))
fmt.Fprintf(w, " </form><br/><form action='/remo/%s'><input type='hidden' name='pass' value='%s'><input type='submit' OnClick='JavaScript:if(!confirm(\"Really Remove this PagE?\")){ return false; }' clasS='long' value='Remove'></form>",p.Title,strings.TrimSpace(r.FormValue("password")))
fmt.Fprintf(w, " </div>\n </div>")
fmt.Fprintf(w, "</body>\n</html>\n")
} else {
fmt.Fprintf(w, " <div id='content'><center><div id=\"error\" class='.wide'><div id='error_container'><div class=\"big\">And what do you think you do?<br /><br /><big>O.o</big></div><br><small>Maybe it was just a wrong password... [<a href=\"/view/%s\">back</a>]</small></div></center></div>\n",p.Title)
}
} else {
http.Redirect(w, r, "/view/Error", http.StatusFound)
}
}
func renderCreate(w http.ResponseWriter, r *http.Request, title string) {
// Get Config from Body
if title != "CreatePage" {
fmt.Fprintf(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" +
"<head>\n" +
" <title>New Wiki/Page ~ %s</title>\n" +
" <style type=\"text/css\">%s</style> \n " +
"</head>\n" +
"<body>\n <div id='header'>\n <div class=\"right\"><a href='/'>%s</a></div>\n <h1>New Wiki/Page</h1>\n </div>\n",wikiname,css_,wikiname)
fmt.Fprintf(w, "<div id='content'><center><div id='new'>" +
"<fieldset><form action='/cnew/CreatePage' method='get'>" +
"<legend>Title</legend><input type=\"text\" name='title' value=\"%s\"><br>" +
"<legend>Password</legend><input name='pass' type=\"password\"><br><br>" +
"Public view?<input type=\"checkbox\" name='view'> " +
"Public edit?<input type=\"checkbox\" name='edit'><br><br>" +
"<input type=\"submit\" value=\"Create new Page!\"><br>" +
"</form></fieldset></div></center></div>\n",title)
fmt.Fprintf(w, "</body>\n</html>\n")
} else {
_, err := loadPage(title)
if err != nil {
public_view := "false"
public_edit := "false"
if r.FormValue("view") == "on" {
public_view = "true"
}
if r.FormValue("edit") == "on" {
public_edit = "true"
}
new_password := r.FormValue("pass")
body := public_view+"::"+public_edit+"::"+new_password+"\n~![META]!~\n"+string(default_)
p := &Page{Title: r.FormValue("title"), Body: []byte(body)}
err := p.save()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
http.Redirect(w, r, "/view/"+r.FormValue("title")+"?password="+new_password, http.StatusFound)
} else {
http.Redirect(w, r, "/view/"+r.FormValue("title"), http.StatusFound)
}
}
}
func getTitle(w http.ResponseWriter, r *http.Request) (title string, err error) {
title = r.URL.Path[lenPath:]
if !titleValidator.MatchString(title) {
http.NotFound(w, r)
err = errors.New("Invalid Page Title")
}
return
}
/*****************
** PAGE HANDLER **
*****************/
func makeMHandler(fn func(http.ResponseWriter, *http.Request, string)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[len("/"):]
fn(w, r, title)
}
}
func makeHandler(fn func(http.ResponseWriter, *http.Request, string)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[lenPath:]
if !titleValidator.MatchString(title) {
http.Redirect(w, r, "/", http.StatusFound)
//http.NotFound(w, r)
return
}
fn(w, r, title)
}
}
func viewHandler(w http.ResponseWriter, r *http.Request, title string) {
p, err := loadPage(title)
if err != nil {
http.Redirect(w, r, "/cnew/"+title, http.StatusFound)
return
}
renderView(w, p, r, true)
}
func editHandler(w http.ResponseWriter, r *http.Request, title string) {
p, err := loadPage(title)
if err != nil {
http.Redirect(w, r, "/cnew/"+title, http.StatusFound)
return
}
renderEdit(w, p, r, false)
}
func homeHandler(w http.ResponseWriter, r *http.Request, title string) {
page, err := loadPage(title)
if err != nil || title == "" {
renderCreate(w, r, title)
return
}
http.Redirect(w, r, "/view/"+page.Title, http.StatusFound)
}
func cnewHandler(w http.ResponseWriter, r *http.Request, title string) {
page, err := loadPage(title)
if err != nil {
renderCreate(w, r, title)
return
}
http.Redirect(w, r, "/view/"+page.Title, http.StatusFound)
}
func remoHandler(w http.ResponseWriter, r *http.Request, title string) {
page, _ := loadPage(title)
boder := bytes.Split(page.Body,[]byte("~![META]!~"))
confer := bytes.Split(boder[0],[]byte("::"))
if strings.TrimSpace(r.FormValue("pass")) == strings.TrimSpace(string(confer[2])) {
os.Remove("pages/"+title+".txt")
http.Redirect(w, r, "/?saved=succes", http.StatusFound)
} else {
http.Redirect(w, r, "/view/"+title+"?password="+strings.TrimSpace(r.FormValue("password_"))+"&saved=fail", http.StatusFound)
}
}
func saveHandler(w http.ResponseWriter, r *http.Request, title string) {
page, _ := loadPage(title)
boder := bytes.Split(page.Body,[]byte("~![META]!~"))
confer := bytes.Split(boder[0],[]byte("::"))
if strings.TrimSpace(r.FormValue("password_")) == strings.TrimSpace(string(confer[2])) {
body := r.FormValue("body")
public_edit := "false"
public_view := "false"
if r.FormValue("public_view") == "on" {
public_view = "true"
}
if r.FormValue("public_edit") == "on" {
public_edit = "true"
}
new_password := r.FormValue("new_password")
body = public_view+"::"+public_edit+"::"+new_password+"\n~![META]!~\n"+body
p := &Page{Title: title, Body: []byte(body)}
err := p.save()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
http.Redirect(w, r, "/view/"+title+"?password="+new_password+"&saved=succes", http.StatusFound)
} else {
http.Redirect(w, r, "/view/"+title+"?password="+strings.TrimSpace(r.FormValue("password_"))+"&saved=fail", http.StatusFound)
}
}
/*****************
** MAIN **
*****************/
func main() {
// Load Default Libs
fmt.Println("~~~~~~~[ "+wikiname+" ]~~~~~~~")
fmt.Println(":: VERSION = 0.1")
fmt.Println(":: AUTHOR = <Roman P> setamagiga@gmail.com")
fmt.Print(":: Loading CSS")
css_ = loadLib("style.css")
fmt.Println("... DONE")
fmt.Print(":: Loading Default Page")
default_ = loadLib("default.txt")
fmt.Println("... DONE")
http.HandleFunc("/", makeMHandler(homeHandler))
http.HandleFunc("/view/", makeHandler(viewHandler))
http.HandleFunc("/edit/", makeHandler(editHandler))
http.HandleFunc("/save/", makeHandler(saveHandler))
http.HandleFunc("/cnew/", makeHandler(cnewHandler))
http.HandleFunc("/remo/", makeHandler(remoHandler))
http.ListenAndServe(":8080", nil)
}