ripristinato doppio-cloudscrape

lib/cloudscraper/cloudscraper_mod/interpreters/nodejs.py

@@ -0,0 +1,46 @@
+import base64
+import logging
+import subprocess
+
+from . import JavaScriptInterpreter
+
+##########################################################################################################################################################
+
+BUG_REPORT = 'Cloudflare may have changed their technique, or there may be a bug in the script.'
+
+##########################################################################################################################################################
+
+
+class ChallengeInterpreter(JavaScriptInterpreter):
+
+    def __init__(self):
+        super(ChallengeInterpreter, self).__init__('nodejs')
+
+    def eval(self, jsEnv, js):
+        try:
+            js = 'var atob = function(str) {return Buffer.from(str, "base64").toString("binary");};' \
+                 'var challenge = atob("%s");' \
+                 'var context = {atob: atob};' \
+                 'var options = {filename: "iuam-challenge.js", timeout: 4000};' \
+                 'var answer = require("vm").runInNewContext(challenge, context, options);' \
+                 'process.stdout.write(String(answer));' \
+                 % base64.b64encode('{}{}'.format(jsEnv, js).encode('UTF-8')).decode('ascii')
+
+            return subprocess.check_output(['node', '-e', js])
+
+        except OSError as e:
+            if e.errno == 2:
+                raise EnvironmentError(
+                    'Missing Node.js runtime. Node is required and must be in the PATH (check with `node -v`). Your Node binary may be called `nodejs` rather than `node`, '
+                    'in which case you may need to run `apt-get install nodejs-legacy` on some Debian-based systems. (Please read the cloudscraper'
+                    ' README\'s Dependencies section: https://github.com/VeNoMouS/cloudscraper#dependencies.'
+                )
+            raise
+        except Exception:
+            logging.error('Error executing Cloudflare IUAM Javascript. %s' % BUG_REPORT)
+            raise
+
+        pass
+
+
+ChallengeInterpreter()