http.c

/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at http://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * $Id$
 ***************************************************************************/

#include "setup.h"

#ifndef CURL_DISABLE_HTTP
/* -- WIN32 approved -- */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>

#ifdef WIN32
#include <time.h>
#include <io.h>
#else
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#ifdef HAVE_TIME_H
#ifdef TIME_WITH_SYS_TIME
#include <time.h>
#endif
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include <signal.h>

#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif

#endif

#include "urldata.h"
#include <curl/curl.h>
#include "transfer.h"
#include "sendf.h"
#include "easyif.h" /* for Curl_convert_... prototypes */
#include "formdata.h"
#include "progress.h"
#include "base64.h"
#include "cookie.h"
#include "strequal.h"
#include "sslgen.h"
#include "http_digest.h"
#include "http_ntlm.h"
#include "http_negotiate.h"
#include "url.h"
#include "share.h"
#include "hostip.h"
#include "http.h"
#include "memory.h"
#include "select.h"
#include "parsedate.h" /* for the week day and month names */
#include "strtoofft.h"
#include "multiif.h"

#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>

/* The last #include file should be: */
#include "memdebug.h"


/*
 * Forward declarations.
 */

static CURLcode Curl_https_connecting(struct connectdata *conn, bool *done);
static int Curl_https_getsock(struct connectdata *conn,
                              curl_socket_t *socks,
                              int numsocks);

/*
 * HTTP handler interface.
 */
const struct Curl_handler Curl_handler_http = {
  "HTTP",                               /* scheme */
  NULL,                                 /* setup_connection */
  Curl_http,                            /* do_it */
  Curl_http_done,                       /* done */
  NULL,                                 /* do_more */
  Curl_http_connect,                    /* connect_it */
  NULL,                                 /* connecting */
  NULL,                                 /* doing */
  NULL,                                 /* proto_getsock */
  NULL,                                 /* doing_getsock */
  NULL,                                 /* disconnect */
  PORT_HTTP,                            /* defport */
  PROT_HTTP,                            /* protocol */
};

#ifdef USE_SSL
/*
 * HTTPS handler interface.
 */
const struct Curl_handler Curl_handler_https = {
  "HTTPS",                              /* scheme */
  NULL,                                 /* setup_connection */
  Curl_http,                            /* do_it */
  Curl_http_done,                       /* done */
  NULL,                                 /* do_more */
  Curl_http_connect,                    /* connect_it */
  Curl_https_connecting,                /* connecting */
  NULL,                                 /* doing */
  Curl_https_getsock,                   /* proto_getsock */
  NULL,                                 /* doing_getsock */
  NULL,                                 /* disconnect */
  PORT_HTTPS,                           /* defport */
  PROT_HTTP | PROT_HTTPS | PROT_SSL     /* protocol */
};
#endif


/*
 * checkheaders() checks the linked list of custom HTTP headers for a
 * particular header (prefix).
 *
 * Returns a pointer to the first matching header or NULL if none matched.
 */
static char *checkheaders(struct SessionHandle *data, const char *thisheader)
{
  struct curl_slist *head;
  size_t thislen = strlen(thisheader);

  for(head = data->set.headers; head; head=head->next) {
    if(strnequal(head->data, thisheader, thislen))
      return head->data;
  }
  return NULL;
}

/*
 * Curl_output_basic() sets up an Authorization: header (or the proxy version)
 * for HTTP Basic authentication.
 *
 * Returns CURLcode.
 */
static CURLcode Curl_output_basic(struct connectdata *conn, bool proxy)
{
  char *authorization;
  struct SessionHandle *data=conn->data;
  char **userp;
  char *user;
  char *pwd;

  if(proxy) {
    userp = &conn->allocptr.proxyuserpwd;
    user = conn->proxyuser;
    pwd = conn->proxypasswd;
  }
  else {
    userp = &conn->allocptr.userpwd;
    user = conn->user;
    pwd = conn->passwd;
  }