尝试使用php和curl复制Web请求(图像上传)

时间:2015-03-20 12:12:54

标签: php curl charles-proxy

我正在尝试将图片上传复制到网站,但该网站没有为此提供api功能。我设法使用Charles Proxy获取请求信息:

Charles Proxy screenshot

这是我的php代码:

$post_data = array(
    'photo' => '@'.$filename,
    '_csrftoken' => '5ebcec201972ab6304a33d418129cd13',
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://example.com/api/v1/upload/photo/');
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Host: example.com'
));
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_COOKIEFILE, 'C:/xampp/htdocs/example/cookies.txt');            


$response = curl_exec($ch);
$http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

print_r($response);

echo $http;

这将返回http代码为500的响应。

1 个答案:

答案 0 :(得分:0)

您没有正确发布。

您不需要Charles Proxy

在您上传之前(chrome,firefox),

  • 右键单击选择Inspect Element
  • 选择网络标签
  • 刷新页面
  • 选择文档(chrome)或HTML(firefox)
  • 清除列表
  • 发布您的上传
  • 在“请求”列表中选择上传请求
  • 在fireFox中选择“在Chrome中修改并重新发送”选择“查看来源”

在右侧,它将显示请求和响应标题

您需要使您的请求看起来与请求标题完全相同

您必须注意重定向期间添加的重定向(例如302)和Cookie。

如果无法查看出现问题,您将需要查看请求和响应标头。

curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_FAILONERROR,true);

您可能想要获取Cookie。创建另一个curl请求以获取上传页面。

捕获cookie: 做curl请求上传页面 获取Response标头($ head)

$data = curl_exec($ch);

if (curl_errno($ch)){
    $data .= 'Retreive Base Page Error: ' . curl_error($ch);
}
else {
  $skip = intval(curl_getinfo($ch, CURLINFO_HEADER_SIZE)); 
  $head = substr($data,0,$skip);
  $e = 0;
  while(true){
    $s = strpos($head,'Set-Cookie: ',$e);
    if (!$s){break;}
    $s += 12;
    $e = strpos($head,';',$s);
    $cookie = substr($head,$s,$e-$s) ;
    $s = strpos($cookie,'=');
    $key = substr($cookie,0,$s);
    $value = substr($cookie,$s);
    $cookies[$key] = $value;

  }

格式化上传请求的捕获内容:

 $cookie = '';
 $show = '';
 $head = '';
 $delim = '';
 foreach ($cookies as $k => $v){
   $cookie .= "$delim$k$v";
   $delim = '; ';
 }

您需要为卷曲添加一些选项

创建POST数据字符串

$post = 'key1=value1&key2=value2&key3=value3';

curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

创建一个数组以放置请求标头键值
使用您上传的Request标头中的确切内容填写Request数组 示例:

$request = array();
$request[] = "Host: www.example.com";
$request[] = "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
$request[] = "User-Agent: MOT-V9mm/00.62 UP.Browser/6.2.3.4.c.1.123 (GUI) MMP/2.0";
$request[] = "Accept-Language: en-US,en;q=0.5";
$request[] = "Connection: keep-alive";
$request[] = "Cache-Control: no-cache";
$request[] = "Pragma: no-cache";

添加到卷曲:

curl_setopt($ch, CURLOPT_HTTPHEADER, $request);

将跟随设置为false。如果有重定向,您可以看到发生了什么。然后创建另一个卷曲请求到重定向的位置。

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);

上传curl请求后获取Headers:

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_ENCODING,"");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_FILETIME, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_TIMEOUT,10);
curl_setopt($ch, CURLOPT_FAILONERROR,true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $request);
$data = curl_exec($ch);
if (curl_errno($ch)){
    $data .= 'Retreive Base Page Error: ' . curl_error($ch);
}
else {
  $skip = intval(curl_getinfo($ch, CURLINFO_HEADER_SIZE)); 
  $head = substr($data,0,$skip);
  $data = substr($data,$skip);
  $info = curl_getinfo($ch);
  $info = var_export($info,true);
}
echo $head;
echo $info;

如果无效,请检查$ info中请求标头的差异。