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13c5a2ab43
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/*
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* (c) Vincenzo "KatolaZ" Nicosia 2017 -- <katolaz@freaknet.org>
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*
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*
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* This file is part of "binnit", a minimal no-fuss pastebin-like
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* server written in golang
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*
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*/
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"time"
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"io"
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"binnit/paste"
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)
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var p_conf = Config{
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server_name: "localhost",
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bind_addr: "0.0.0.0",
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bind_port: "8000",
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paste_dir: "./pastes",
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templ_dir: "./tmpl",
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max_size: 4096,
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log_file: "./binnit.log",
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}
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func min (a, b int) int {
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if a > b {
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return b
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} else {
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return a
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}
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}
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func handle_get_paste(w http.ResponseWriter, r *http.Request) {
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var paste_name, orig_name string
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var err error
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orig_name = filepath.Clean(r.URL.Path)
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paste_name = p_conf.paste_dir + "/" + orig_name
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orig_IP := r.RemoteAddr
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log.Printf("Received GET from %s for '%s'\n", orig_IP, orig_name)
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// The default is to serve index.html
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if (orig_name == "/") || (orig_name == "/index.html") {
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http.ServeFile(w, r, p_conf.templ_dir + "/index.html")
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} else {
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// otherwise, if the requested paste exists, we serve it...
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if _, err = os.Stat(paste_name); err == nil && orig_name != "./" {
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//http.ServeFile(w, r, paste_name)
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s, err := prepare_paste_page(&p_conf, orig_name)
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if err == nil {
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fmt.Fprintf(w, "%s", s)
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return
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} else {
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fmt.Fprintf(w, "Error recovering paste '%s'\n", orig_name)
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return
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}
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} else {
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// otherwise, we give say we didn't find it
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fmt.Fprintf(w, "Paste '%s' not found\n", orig_name)
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return
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}
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}
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}
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func handle_put_paste(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseForm(); err != nil {
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// Invalid POST -- let's serve the default file
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http.ServeFile(w, r, p_conf.templ_dir + "/index.html")
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} else {
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req_body := r.PostForm
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orig_IP := r.RemoteAddr
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log.Printf("Received new POST from %s\n", orig_IP)
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// get title, body, and time
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title := req_body.Get("title")
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date := time.Now().String()
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content := req_body.Get("paste")
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content = content[0:min(len(content), int(p_conf.max_size))]
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ID, err := paste.Store(title, date, content, p_conf.paste_dir)
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log.Printf(" ID: %s; err: %s\n", ID, err)
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if err == nil {
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hostname := p_conf.server_name
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if show := req_body.Get("show"); show != "1" {
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fmt.Fprintf(w, "%s/%s", hostname, ID)
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return
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} else{
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fmt.Fprintf(w, "<html><body>Link: <a href='http://%s/%s'>http://%s/%s</a></body></html>",
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hostname, ID, hostname, ID)
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return
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}
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} else {
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fmt.Fprintf(w, "%s\n", err)
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}
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}
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}
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func req_handler(w http.ResponseWriter, r *http.Request) {
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switch r.Method {
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case "GET":
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handle_get_paste(w, r)
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case "POST":
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handle_put_paste(w, r)
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default:
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http.NotFound(w, r)
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}
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}
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func main() {
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parse_config("binnit.cfg", &p_conf)
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f, err := os.OpenFile(p_conf.log_file, os.O_APPEND | os.O_CREATE | os.O_RDWR, 0600)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error opening log_file: %s. Exiting\n", p_conf.log_file)
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os.Exit(1)
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}
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defer f.Close()
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log.SetOutput(io.Writer(f))
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log.SetPrefix("[binnit]: ")
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log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds)
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log.Println("Binnit version 0.1 -- Starting ")
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log.Printf(" + Serving pastes on: %s\n", p_conf.server_name)
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log.Printf(" + listening on: %s:%s\n", p_conf.bind_addr, p_conf.bind_port )
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log.Printf(" + paste_dir: %s\n", p_conf.paste_dir)
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log.Printf(" + templ_dir: %s\n", p_conf.templ_dir)
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log.Printf(" + max_size: %d\n", p_conf.max_size)
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// FIXME: create paste_dir if it does not exist
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http.HandleFunc("/", req_handler)
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log.Fatal(http.ListenAndServe(p_conf.bind_addr + ":" + p_conf.bind_port, nil))
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}
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