getinfo.c

harvest是一个下载html网页得机器人

/***************************************************************************
 *                                  _   _ ____  _     
 *  Project                     ___| | | |  _ \| |    
 *                             / __| | | | |_) | |    
 *                            | (__| |_| |  _ <| |___ 
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2003, Daniel Stenberg, <[e-mail]>, 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: getinfo.c,v 1.32 2003/09/04 10:55:20 bagder Exp $
 ***************************************************************************/

#include "setup.h"

#include <curl/curl.h>

#include "urldata.h"

#include <stdio.h>
#include <string.h>
#include <stdarg.h>

#ifdef	VMS
#include	<stdlib.h>
#endif

/* Make this the last #include */
#ifdef CURLDEBUG
#include "memdebug.h"
#else
#include <stdlib.h>
#endif

/*
 * This is supposed to be called in the beginning of a permform() session
 * and should reset all session-info variables
 */
CURLcode Curl_initinfo(struct SessionHandle *data)
{
  struct Progress *pro = &data->progress;
  struct PureInfo *info =&data->info;

  pro->t_nslookup = 0;
  pro->t_connect = 0;
  pro->t_pretransfer = 0;
  pro->t_starttransfer = 0;
  pro->timespent = 0;
  pro->t_redirect = 0;

  info->httpcode = 0;
  info->httpversion=0;
  info->filetime=-1; /* -1 is an illegal time and thus means unknown */
  
  if (info->contenttype)
    free(info->contenttype);
  info->contenttype = NULL;

  info->header_size = 0;
  info->request_size = 0;
  return CURLE_OK;
}

CURLcode Curl_getinfo(struct SessionHandle *data, CURLINFO info, ...)
{
  va_list arg;
  long *param_longp=NULL;
  double *param_doublep=NULL;
  char **param_charp=NULL;
  va_start(arg, info);

  switch(info&CURLINFO_TYPEMASK) {
  default:
    return CURLE_BAD_FUNCTION_ARGUMENT;
  case CURLINFO_STRING:
    param_charp = va_arg(arg, char **);  
    if(NULL == param_charp)
      return CURLE_BAD_FUNCTION_ARGUMENT;
    break;
  case CURLINFO_LONG:
    param_longp = va_arg(arg, long *);
    if(NULL == param_longp)
      return CURLE_BAD_FUNCTION_ARGUMENT;
    break;
  case CURLINFO_DOUBLE:
    param_doublep = va_arg(arg, double *);
    if(NULL == param_doublep)
      return CURLE_BAD_FUNCTION_ARGUMENT;
    break;
  }
  
  switch(info) {
  case CURLINFO_EFFECTIVE_URL:
    *param_charp = data->change.url?data->change.url:(char *)"";
    break;
  case CURLINFO_RESPONSE_CODE:
    *param_longp = data->info.httpcode;
    break;
  case CURLINFO_HTTP_CONNECTCODE:
    *param_longp = data->info.httpproxycode;
    break;
  case CURLINFO_FILETIME:
    *param_longp = data->info.filetime;
    break;
  case CURLINFO_HEADER_SIZE:
    *param_longp = data->info.header_size;
    break;
  case CURLINFO_REQUEST_SIZE:
    *param_longp = data->info.request_size;
    break;
  case CURLINFO_TOTAL_TIME:
    *param_doublep = data->progress.timespent;
    break;
  case CURLINFO_NAMELOOKUP_TIME:
    *param_doublep = data->progress.t_nslookup;
    break;
  case CURLINFO_CONNECT_TIME:
    *param_doublep = data->progress.t_connect;
    break;
  case CURLINFO_PRETRANSFER_TIME:
    *param_doublep =  data->progress.t_pretransfer;
    break;
  case CURLINFO_STARTTRANSFER_TIME:
    *param_doublep = data->progress.t_starttransfer;
    break;
  case CURLINFO_SIZE_UPLOAD:
    *param_doublep =  data->progress.uploaded;
    break;
  case CURLINFO_SIZE_DOWNLOAD:
    *param_doublep = data->progress.downloaded;
    break;
  case CURLINFO_SPEED_DOWNLOAD:
    *param_doublep =  data->progress.dlspeed;
    break;
  case CURLINFO_SPEED_UPLOAD:
    *param_doublep = data->progress.ulspeed;
    break;
  case CURLINFO_SSL_VERIFYRESULT:
    *param_longp = data->set.ssl.certverifyresult;
    break;
  case CURLINFO_CONTENT_LENGTH_DOWNLOAD:
    *param_doublep = data->progress.size_dl;
    break;
  case CURLINFO_CONTENT_LENGTH_UPLOAD:
    *param_doublep = data->progress.size_ul;
    break;
  case CURLINFO_REDIRECT_TIME:
    *param_doublep =  data->progress.t_redirect;
    break;
  case CURLINFO_REDIRECT_COUNT:
    *param_longp = data->set.followlocation;
    break;
  case CURLINFO_CONTENT_TYPE:
    *param_charp = data->info.contenttype;
    break;
  case CURLINFO_PRIVATE:
    *param_charp = data->set.private;
    break;
  case CURLINFO_HTTPAUTH_AVAIL:
    *param_longp = data->info.httpauthavail;
    break;
  case CURLINFO_PROXYAUTH_AVAIL:
    *param_longp = data->info.proxyauthavail;
    break;
  default:
    return CURLE_BAD_FUNCTION_ARGUMENT;
  }
  return CURLE_OK;
}