+
−/*
+
− * Copyright (c) 2000, Red Hat, Inc.
+
− *
+
− *     This program is free software; you can redistribute it and/or modify
+
− *     it under the terms of the GNU General Public License as published by
+
− *     the Free Software Foundation; either version 2 of the License, or
+
− *     (at your option) any later version.
+
− *
+
− *     A copy of the GNU General Public License can be found at
+
− *     http://www.gnu.org/
+
− *
+
− * Written by DJ Delorie <dj@cygnus.com>
+
− *
+
− */
+
−
+
−/* This file is responsible for implementing all direct HTTP protocol
+
−   channels.  It is intentionally simplistic. */
+
−
+
−#include "win32.h"
+
−#include "winsock.h"
+
−#include <stdio.h>
+
−#include <stdlib.h>
+
−
+
−#include "resource.h"
+
−#include "state.h"
+
−#include "simpsock.h"
+
−#include "msg.h"
+
−
+
−#include "netio.h"
+
−#include "nio-http.h"
+
−
+
−static char six2pr[64] = {
+
−    'A','B','C','D','E','F','G','H','I','J','K','L','M',
+
−    'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
+
−    'a','b','c','d','e','f','g','h','i','j','k','l','m',
+
−    'n','o','p','q','r','s','t','u','v','w','x','y','z',
+
−    '0','1','2','3','4','5','6','7','8','9','+','/'
+
−};
+
−
+
−static char *
+
−base64_encode (char *username, char *password)
+
−{
+
−  unsigned char *ep;
+
−  char *rp;
+
−  static char *rv = 0;
+
−  if (rv)
+
−    free (rv);
+
−  rv = (char *) malloc (2 * (strlen (username) + strlen (password)) + 5);
+
−
+
−  char *up = (char *) malloc (strlen (username) + strlen (password) + 6);
+
−  strcpy (up, username);
+
−  strcat (up, ":");
+
−  strcat (up, password);
+
−  ep = (unsigned char *)up + strlen (up);
+
−  *ep++ = 0;
+
−  *ep++ = 0;
+
−  *ep++ = 0;
+
−
+
−  char block[4];
+
−
+
−  rp = rv;
+
−
+
−  for (ep = (unsigned char *)up; *ep; ep += 3)
+
−    {
+
−      block[0] = six2pr[ep[0] >> 2];
+
−      block[1] = six2pr[((ep[0] << 4) & 0x30) | ((ep[1] >> 4) & 0x0f)];
+
−      block[2] = six2pr[((ep[1] << 2) & 0x3c) | ((ep[2] >> 6) & 0x03)];
+
−      block[3] = six2pr[ep[2] & 0x3f];
+
−
+
−      if (ep[1] == 0)
+
−	block[2] = block[3] = '=';
+
−      if (ep[2] == 0)
+
−	block[3] = '=';
+
−      memcpy (rp, block, 4);
+
−      rp += 4;
+
−    }
+
−  *rp = 0;
+
−
+
−  free (up);
+
−
+
−  return rv;
+
−}
+
−
+
−NetIO_HTTP::NetIO_HTTP (char *Purl)
+
−  : NetIO (Purl)
+
−{
+
− retry_get:
+
−  if (port == 0)
+
−    port = 80;
+
−
+
−  if (net_method == IDC_NET_PROXY)
+
−    s = new SimpleSocket (net_proxy_host, net_proxy_port);
+
−  else
+
−    s = new SimpleSocket (host, port);
+
−
+
−  if (!s->ok())
+
−    {
+
−      s = 0;
+
−      return;
+
−    }
+
−
+
−  if (net_method == IDC_NET_PROXY)
+
−    s->printf ("GET %s HTTP/1.0\r\n", url);
+
−  else
+
−    s->printf ("GET %s HTTP/1.0\r\n", path);
+
−  s->printf ("Host: %s:%d\r\n", host, port);
+
−
+
−  if (net_user && net_passwd)
+
−    s->printf ("Authorization: Basic %s\r\n",
+
−	       base64_encode (net_user, net_passwd));
+
−
+
−  if (net_proxy_user && net_proxy_passwd)
+
−    s->printf ("Proxy-Authorization: Basic %s\r\n",
+
−	       base64_encode (net_proxy_user, net_proxy_passwd));
+
−
+
−  s->printf ("\r\n");
+
−
+
−  char *l = s->gets ();
+
−  int code;
+
−  sscanf (l, "%*s %d", &code);
+
−  if (code >= 300 && code < 400)
+
−    {
+
−      do {
+
−	l = s->gets ();
+
−	if (_strnicmp (l, "Location:", 9) == 0)
+
−	  {
+
−	    char *u = l + 9;
+
−	    while (*u == ' ' || *u == '\t')
+
−	      u++;
+
−	    set_url (u);
+
−	    delete s;
+
−	    goto retry_get;
+
−	  }
+
−      } while (*l);
+
−    }
+
−  if (code == 401) /* authorization required */
+
−    {
+
−      get_auth ();
+
−      delete s;
+
−      goto retry_get;
+
−    }
+
−  if (code == 407) /* proxy authorization required */
+
−    {
+
−      get_proxy_auth ();
+
−      delete s;
+
−      goto retry_get;
+
−    }
+
−  if (code >= 300)
+
−    {
+
−      delete s;
+
−      s = 0;
+
−      return;
+
−    }
+
−  do {
+
−    l = s->gets ();
+
−    if (_strnicmp (l, "Content-Length:", 15) == 0)
+
−      sscanf (l, "%*s %d", &file_size);
+
−  } while (*l);
+
−}
+
−
+
−NetIO_HTTP::~NetIO_HTTP ()
+
−{
+
−  if (s)
+
−    delete s;
+
−}
+
−
+
−int
+
−NetIO_HTTP::ok ()
+
−{
+
−  if (s)
+
−    return 1;
+
−  return 0;
+
−}
+
−
+
−int
+
−NetIO_HTTP::read (char *buf, int nbytes)
+
−{
+
−  return s->read (buf, nbytes);
+
−}