CD Actual 49/cda49.iso/VNULabs/BrownOrifice/BOHTTPD-0.2/BOHTTPDConnection.java

Java Source | 2000-08-11 | 5.6 KB | 181 lines

import java.applet.*;
import java.lang.*;
import java.io.*;
import java.net.*;

import BOSocket;
import BOServerSocket;
import BOURLConnection;
import BOURLInputStream;
import BOHTTPD;

class BOHTTPDConnection implements Runnable {
  public void dump_to(String fn, OutputStream os) throws IOException {
    PrintWriter writer = new PrintWriter(os, true);
    try {
      String fns = fn;

      int i;
      while ((i = fns.indexOf("%20")) >= 0)
        fns = fns.substring(0, i) + " " + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%3a")) >= 0)
        fns = fns.substring(0, i) + ":" + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%3A")) >= 0)
        fns = fns.substring(0, i) + ":" + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%2F")) >= 0)
        fns = fns.substring(0, i) + "/" + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%2f")) >= 0)
        fns = fns.substring(0, i) + "/" + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%2E")) >= 0)
        fns = fns.substring(0, i) + "." + fns.substring(i + 3, fns.length());
      while ((i = fns.indexOf("%2e")) >= 0)
        fns = fns.substring(0, i) + "." + fns.substring(i + 3, fns.length());

      while (fns.length() >= 1 && fns.startsWith("/"))
        fns = fns.substring(1, fns.length());
      while (fns.length() >= 2 && fns.endsWith("//"))
        fns = fns.substring(0, fns.length() - 1);

      if (!(fns.startsWith("http:") || fns.startsWith("https:") ||
          fns.startsWith("ftp:") || fns.startsWith("file:")))
        fns = "file:/" + fns;
      URL uu = new URL(fns);

      if (fns.equals("file:/")) {
        String s = "Rerouted.\n";
        writer.println("HTTP/1.1 302 Found");
        writer.println("Location: " + "http://" + sv.host + ":" + sv.port + "/" + sv.path);
        writer.println("Content-type: text/plain");
        writer.println("Content-length: " + s.length());
        writer.println("");
        writer.print(s);
        writer.flush();
        return;
      }

      if (fns.startsWith("file:") && !fns.startsWith("file:/" + sv.path) ||
       fns.indexOf("..") >= 0) {
        String s = "Permission Denied.\n";
        writer.println("HTTP/1.1 403 Permission Denied");
        writer.println("Content-type: text/plain");
        writer.println("Content-length: " + s.length());
        writer.println("");
        writer.print(s);
        writer.flush();
        return;
      }


      BOURLConnection euc;
      BOURLInputStream euis;
      int b, length;

      euc = new BOURLConnection(uu);
      euis = new BOURLInputStream(euc);
      length = 0;
      while ((b = euis.read()) >= 0) length++;
      euis.close();

      String type = BOMimeType.get(fns);
      String banner = "";
      String footer = "";

      if (type == "text/html") {
        String root = "http://" + sv.remote_host + "/proj/dan/BOHTTPD-0.2";
        banner =
          "<link rel=stylesheet href=\"" + root + "/BOHTTPD.css\">\n" +
          "<table bgcolor=white width=640>" +
            "<tr valign=top>" +
              "<td><img src=\"" + root + "/BOHTTPD_logo.gif\"></td>" +
              "<td width=100% align=left>" +
                "<h2>Brown Orifice<br><code>" + fns + "</code></h2>" +
                "<ul>" +
                "<li><a href=\"" + root + "/BOHTTPD.cgi\">Brown Orifice HTTPD Homepage</a>" +
                "<li><a href=\"" + root + "/BOHTTPD_search.cgi\">BOHTTPD Search</a>" +
                "<li><a href=\"" + root + "/BOHTTPD_download.cgi\">Download BOHTTPD!</a>" +
                "</ul>" +
              "</td>" +
            "</tr>" +
          "</table><hr>";

        footer =
          "<script>\n" +
          "var ss;\n" +
          "var ll = document.links.length;\n" +
          "for (var i = 0; i < ll; i++) {\n" +
          "  ss += 'q=' + escape(document.links[i]) + '&';\n" +
          "}\n" +
          "var i = new Image;" +
          "i.src='" + root + "/BOHTTPD_log.cgi?' + ss;" +
          "</script>";
        length += banner.length() + footer.length();
      }

      writer.println("HTTP/1.1 200 OK");
      writer.println("Content-type: " + type);
      writer.println("Content-length: " + length);
      writer.println("");
      writer.print(banner);

      writer.flush();

      euc = new BOURLConnection(uu);
      euis = new BOURLInputStream(euc);
      while ((b = euis.read()) >= 0) os.write(b);

      writer.print(footer);
      writer.flush();

      euis.close();
    } catch (Exception e) {
      String resp = e + "";
      writer.println("HTTP/1.1 500 Internal Server Error");
      writer.println("Content-type: text/plain");
      writer.println("Content-length: " + resp.length());
      writer.println("");
      writer.print(resp);
      writer.flush();
    }
  }


//courtesy of anonymous canadian internet cafe customer:
  public BOSocket cl = null;
  public BOHTTPD sv = null;

  public void setSock(BOSocket cli) {
    cl = cli;
  }

  public void setServer(BOHTTPD _sv) {
    sv = _sv;
  }

  public void run() {
    PrintWriter writer;
    BufferedReader reader;
    String line;

try {
    writer = new PrintWriter(cl.getOutputStream(), true);
    reader = new BufferedReader(
          new InputStreamReader(cl.getInputStream()));

        line = reader.readLine();
        while (reader.readLine().length() > 0) { }

        int at0 = line.indexOf(" ");
        if (at0 < 0) throw new IOException();
        int at1 = line.indexOf(" HTTP");
        if (at1 < 0) throw new IOException();
        String filename = line.substring(at0 + 1, at1);

        dump_to(filename, cl.getOutputStream());
        cl.close_real();
} catch (Exception e) { System.out.println(e); }

  }

}