使用带有g-recaptcha-response参数的POST提交表单 [英] Submit a form using POST with g-recaptcha-response argument

问题描述

我想从以下网页提交表单: http://www.hzzo-net .hr/statos_OIB.htm

I want to submit a form from following web page: http://www.hzzo-net.hr/statos_OIB.htm

首先，我使用2captcha服务绕过Recaptcha:

First, I use 2captcha service to bypass recaptcha:

# parameters
api_key <- "c+++"
api_url <- "http://2captcha.com/in.php"
site_key <- "6Lc3SAgUAAAAALFnYxUbXlcJ8I9grvAPC6LFTKQs"
hzzo_url <- "http://www.hzzo-net.hr/statos_OIB.htm"

# GET method
req_url <- paste0("http://2captcha.com/in.php?key=", api_key,"&method=userrecaptcha&googlekey=", 
                  site_key, "&pageurl=", hzzo_url)
get_response <- POST(req_url)
hzzo_content <- content(get_response)
hzzo_content <- xml_text(hzzo_content)
captcha_id <- stringr::str_extract_all(hzzo_content[[1]], "\\d+")[[1]]

# solve captcha
Sys.sleep(16L)
captcha2_solve <- function(apiKey, capstchaID){
  req_url <- paste0("http://2captcha.com/res.php?key=", api_key,"&action=get&id=", capstchaID)
  result <- GET(req_url)
  captcha_content <- content(result)
  hzzo_response <- xml_text(captcha_content)
  hzzo_response <- strsplit(hzzo_response, "\\|")
  return(hzzo_response)
  # hzzo_response <- hzzo_response[[1]][[2]]
  # return(hzzo_response)
}
hzzo_response <- captcha2_solve(api_key, captcha_id)
while(hzzo_response[[1]] == "CAPCHA_NOT_READY"){
  Sys.sleep(16L)
  hzzo_response <- captcha2_solve(api_key, captcha_id)
  return(hzzo_response)
}
hzzo_response <- hzzo_response[[1]][[2]]

执行此代码后，我得到了我输入到Recaptcha文本区域的响应.正如我所料，这部分工作正常.响应如下所示:

After executing this code I got the response that I have enter to textarea of recaptcha. This part works fine, as I expected. The response looks like this:

"03AHqfIOmo9BlCsCKyg-lDes4oW-U3PWgCtATRUqXFcEV032acDgGoOzrV8GiZNDzCF4TbCVLcY8HZ8hR1JqO11YdRExvgPDL0EUsjCZdI0rUm_LnBRRifyb66X7V6r4n8CIm1si3EKmw36XIcZK7MGrHSNWRrj2aGzWAYO8ceobViOICOhkYe9Bsfv64tUHWvHSqNIoesD_FHplbWG3B0eMag5341NyycjpNLxgNCwVzA8mhCU3oQUcloze-mIclFMZ7J_nbVhXdy8-qipF5ZFH4xIhSQXHH-TqxyaGQFjKdgLch7MuDEQVRcQGo1o4QuSEoeCTjlPn3Mah5vC8zKrnqfbMgiOVOIDJFGvFY4KOivbBzYTz5nW9g"

在那之后，我应该提交表格.这是我无法理解的部分.

After that, I should submit the form. This is the part I can't get right.

我试图将所有参数添加到POST:

I tried to add all arguments to POST:

parameters <- list(
  'upoib' = "93335620125", # example of number to enter
  'g-recaptcha-response' = hzzo_response
)

test <- POST(
  "http://www.hzzo-net.hr/statos_OIB.htm",
  body = toJSON(parameters), 
  encode = "json",
  verbose()
)

但这只是给我第一页.

如果我有recaptcha响应变量，如何提交表格?是否可以使用httr软件包提交，或者我必须使用Selenium.代码可以在R或Python中(仅需要最后一部分，即POST函数).

How can I submit the form if I have the recaptcha response variable? Is it possible to submit it with httr package or I have to use Selenium. The code can be in R or Python (just need the last part, POST function).

推荐答案

如果检查HTML，您将看到表单的操作为../cgi-bin/statos_OIB.cgi，这意味着表单已提交给http://www.hzzo-net.hr/cgi-bin/statos_OIB.cgi，因此您必须使用该网址.

If you inspect the HTML you'll see that the form's action is ../cgi-bin/statos_OIB.cgi, which means that the form is submitted to http://www.hzzo-net.hr/cgi-bin/statos_OIB.cgi, so you must use that URL.

此外，经过一些测试，我发现服务器返回了500响应，除非提供了有效的Referer(http://www.hzzo-net.hr/statos_OIB.htm).

Also, after some testing I discovered that the server returns a 500 response, unless a valid Referer (http://www.hzzo-net.hr/statos_OIB.htm) is provided.

我不熟悉R，但是我可以使用 requests 库.

I'm not familiar with R, but I can provide an example in Python, using the requests library.

import requests

url = "http://www.hzzo-net.hr/cgi-bin/statos_OIB.cgi"
hzzo_response = 'your token'
data = {
    'upoib': '93335620125', 
    'g-recaptcha-response': hzzo_response
}
headers = {'referer': 'http://www.hzzo-net.hr/statos_OIB.htm'}
r = requests.post(url, data=data, headers=headers)
html = r.text

print(html)

---

研究了httr文档之后，我设法在R中翻译"了上面的代码.如果提供了有效的令牌，该代码将产生正确的结果.

---

After studying the httr docs I managed to 'translate' the above code in R. The code produces correct results if a valid token is supplied.

library(httr)

url <- "http://www.hzzo-net.hr/cgi-bin/statos_OIB.cgi"
hzzo_response <- "your token"
parameters <- list(
  'upoib' = "93335620125", 
  'g-recaptcha-response' = hzzo_response
)
test <- POST(
  url,
  body = parameters, 
  add_headers(Referer = 'http://www.hzzo-net.hr/statos_OIB.htm'),
  encode = "form",
  verbose()
)
html <- content(test, 'text', encoding = 'UTF-8')

print(html)

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