我得到以下错误:

Exception in thread Thread-3:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 810, in        __bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 763, in  run
self.__target(*self.__args, **self.__kwargs)
File "/Users/Matthew/Desktop/Skypebot 2.0/bot.py", line 271, in process
info = urllib2.urlopen(req).read()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 154, in urlopen
return opener.open(url, data, timeout)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 431, in open
response = self._open(req, data)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 449, in _open
'_open', req)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain
result = func(*args)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1240, in https_open
context=self._context)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1197, in do_open
raise URLError(err)
URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)>

下面是导致这个错误的代码:

if input.startswith("!web"):
    input = input.replace("!web ", "")      
    url = "https://domainsearch.p.mashape.com/index.php?name=" + input
    req = urllib2.Request(url, headers={ 'X-Mashape-Key': 'XXXXXXXXXXXXXXXXXXXX' })
    info = urllib2.urlopen(req).read()
    Message.Chat.SendMessage ("" + info)

我正在使用的API要求我使用HTTPS。我怎样才能让它绕过验证呢?


当前回答

I was getting the same error, and also went on a wild goose chase for quite a while before I gave up and started trying things on my own. I eventually figured it out, so I thought I'd share. In my case, I am running Python 2.7.10 (due to reasons beyond my control) on Linux, don't have access to the requests module, can't install certificates globally at the OS or Python level, can't set any environment variables, and need to access a specific internal site that uses internally issued certificates.

注意:禁用SSL验证从来不是一个选项。我正在下载一个脚本,它可以立即以根用户的身份运行。没有SSL验证,任何web服务器都可以假装是我的目标主机,而我只是接受他们给我的任何东西,并以root身份运行它!

我将根证书和中间证书(可能不止一个)以pem格式保存到一个文件中,然后使用以下代码:

import ssl,urllib2
data = urllib2.build_opener(urllib2.HTTPSHandler(context=ssl.create_default_context(cafile='/path/to/ca-cert-chain.pem')), urllib2.ProxyHandler({})).open('https://your-site.com/somefile').read()
print(data)

注意,我在那里添加了urllib2.ProxyHandler({})。这是因为在我们的环境中,代理是默认设置的,但它们只能访问外部站点,不能访问内部站点。如果没有代理绕过,我就无法访问内部站点。如果你没有这个问题,你可以简化如下:

data = urllib2.build_opener(urllib2.HTTPSHandler(context=ssl.create_default_context(cafile='/path/to/ca-cert-chain.pem'))).open('https://your-site.com/somefile').read()

工作起来很有魅力,而且不会危及安全。

享受吧!

其他回答

如果你在vCenter 6上,你应该将你vCenter的vmware证书颁发机构证书添加到你的操作系统的受信任CA列表中。要下载证书,请执行以下操作

打开Web浏览器。 导航到https:// 在右下角单击“下载受信任的根CA”链接

在Fedora

解压缩并将扩展名从.0更改为.cer 将其复制到/etc/pki/ca-trust/source/anchors/ 执行update-ca-trust命令。

链接:

https://virtualizationreview.com/articles/2015/04/02/install-root-self-signed-certificate-vcenter-6.aspx?m=1 http://forums.fedoraforum.org/showthread.php?t=293856

就像我在评论中写的,这个问题可能与这个SO答案有关。

简而言之:有多种方法来验证证书。OpenSSL使用的验证与系统上的受信任根证书不兼容。OpenSSL是Python使用的。

您可以尝试获取Verisign Class 3 Public Primary Certification Authority缺少的证书,然后根据Python文档使用cafile选项:

urllib2.urlopen(req, cafile="verisign.pem")

Ln -s /usr/local/share/certs/ca-root-nss。crt /etc/ssl/cert.pem

(10.1 FreeBSD)

对于Centos 6/7、Fedora上的Python 3.4+,只需按如下方式安装受信任CA:

拷贝CA.crt到/etc/pki/ca-trust/source/anchors/ update-ca-trust force-enable update-ca-trust提取

我认为你有几种方法可以解决这个问题。我提到了以下5种方法:

你可以为每个请求定义上下文,并在每个请求上传递上下文,如下所示:

import certifi
import ssl
import urllib
context = ssl.create_default_context(cafile=certifi.where())
result = urllib.request.urlopen('https://www.example.com', context=context)

或在环境中设置证书文件。

import os
import certifi
import urllib
os.environ["REQUESTS_CA_BUNDLE"] = certifi.where()
os.environ["SSL_CERT_FILE"] = certifi.where()
result = urllib.request.urlopen('https://www.example.com')

创建默认的https上下文方法:

import certifi
import ssl
ssl._create_default_https_context = lambda: ssl.create_default_context(cafile=certifi.where())
result = urllib.request.urlopen('https://www.example.com')

如果您使用Linux机器,生成新的证书并导出指向证书目录的环境变量,则可以修复该问题。

$ sudo update-ca-certificates --fresh
$ export SSL_CERT_DIR=/etc/ssl/certs

或如果您使用Mac机器,生成新的证书

$ cd "/Applications/$(python3 --version | awk '{print $2}'| awk  -F. '{print "Python " $1"."$2}')"
$ sudo "./Install Certificates.command"