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-rw-r--r--netlib/version_check.py49
1 files changed, 49 insertions, 0 deletions
diff --git a/netlib/version_check.py b/netlib/version_check.py
new file mode 100644
index 00000000..09dc23ae
--- /dev/null
+++ b/netlib/version_check.py
@@ -0,0 +1,49 @@
+from __future__ import print_function, absolute_import
+import sys
+import inspect
+import os.path
+
+import OpenSSL
+from . import version
+
+PYOPENSSL_MIN_VERSION = (0, 15)
+
+
+def version_check(
+ mitmproxy_version,
+ pyopenssl_min_version=PYOPENSSL_MIN_VERSION,
+ fp=sys.stderr):
+ """
+ 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.
+ """
+ # We don't introduce backward-incompatible changes in patch versions. Only
+ # consider major and minor version.
+ if version.IVERSION[:2] != mitmproxy_version[:2]:
+ print(
+ "You are using mitmproxy %s with netlib %s. "
+ "Most likely, that won't work - please upgrade!" % (
+ mitmproxy_version, version.VERSION
+ ),
+ file=fp
+ )
+ sys.exit(1)
+ v = tuple([int(x) for x in OpenSSL.__version__.split(".")][:2])
+ if v < pyopenssl_min_version:
+ print(
+ "You are using an outdated version of pyOpenSSL:"
+ " mitmproxy requires pyOpenSSL %x or greater." %
+ pyopenssl_min_version,
+ 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(
+ "Your pyOpenSSL %s installation is located at %s" % (
+ OpenSSL.__version__, pyopenssl_path
+ ),
+ file=fp
+ )
+ sys.exit(1)