From d33d3663ecb166461d9cb5a78a29b44ee7a8fbb7 Mon Sep 17 00:00:00 2001
From: Maximilian Hils <git@maximilianhils.com>
Date: Thu, 18 Feb 2016 13:03:40 +0100
Subject: combine projects

---
 netlib/version_check.py | 60 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 netlib/version_check.py

(limited to 'netlib/version_check.py')

diff --git a/netlib/version_check.py b/netlib/version_check.py
new file mode 100644
index 00000000..9cf27eea
--- /dev/null
+++ b/netlib/version_check.py
@@ -0,0 +1,60 @@
+"""
+Having installed a wrong version of pyOpenSSL or netlib is unfortunately a
+very common source of error. Check before every start that both versions
+are somewhat okay.
+"""
+from __future__ import division, absolute_import, print_function
+import sys
+import inspect
+import os.path
+import six
+
+import OpenSSL
+from . import version
+
+PYOPENSSL_MIN_VERSION = (0, 15)
+
+
+def check_mitmproxy_version(mitmproxy_version, fp=sys.stderr):
+    # We don't introduce backward-incompatible changes in patch versions. Only
+    # consider major and minor version.
+    if version.IVERSION[:2] != mitmproxy_version[:2]:
+        print(
+            u"You are using mitmproxy %s with netlib %s. "
+            u"Most likely, that won't work - please upgrade!" % (
+                mitmproxy_version, version.VERSION
+            ),
+            file=fp
+        )
+        sys.exit(1)
+
+
+def check_pyopenssl_version(min_version=PYOPENSSL_MIN_VERSION, fp=sys.stderr):
+    min_version_str = u".".join(six.text_type(x) for x in min_version)
+    try:
+        v = tuple(int(x) for x in OpenSSL.__version__.split(".")[:2])
+    except ValueError:
+        print(
+            u"Cannot parse pyOpenSSL version: {}"
+            u"mitmproxy requires pyOpenSSL {} or greater.".format(
+                OpenSSL.__version__, min_version_str
+            ),
+            file=fp
+        )
+        return
+    if v < min_version:
+        print(
+            u"You are using an outdated version of pyOpenSSL: "
+            u"mitmproxy requires pyOpenSSL {} or greater.".format(min_version_str),
+            file=fp
+        )
+        # Some users apparently have multiple versions of pyOpenSSL installed.
+        # Report which one we got.
+        pyopenssl_path = os.path.dirname(inspect.getfile(OpenSSL))
+        print(
+            u"Your pyOpenSSL {} installation is located at {}".format(
+                OpenSSL.__version__, pyopenssl_path
+            ),
+            file=fp
+        )
+        sys.exit(1)
-- 
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