Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Plugins/CheckerPlugins/CodeStyleChecker/Security/Checks/insecureHashlibNew.py	Tue Jun 09 20:10:59 2020 +0200
@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2020 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a check for use of insecure md4, md5, or sha1 hash
+functions in hashlib.new().
+"""
+
+#
+# This is a modified version of the one found in the bandit package.
+#
+# Original Copyright 2014 Hewlett-Packard Development Company, L.P.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+
+def getChecks():
+    """
+    Public method to get a dictionary with checks handled by this module.
+    
+    @return dictionary containing checker lists containing checker function and
+        list of codes
+    @rtype dict
+    """
+    return {
+        "Call": [
+            (checkHashlibNew, ("S324",)),
+        ],
+    }
+
+
+def checkHashlibNew(reportError, context, config):
+    """
+    Function to check for use of insecure md4, md5, or sha1 hash functions
+    in hashlib.new().
+    
+    @param reportError function to be used to report errors
+    @type func
+    @param context security context object
+    @type SecurityContext
+    @param config dictionary with configuration data
+    @type dict
+    """
+    if config and "insecure_hashes" in config:
+        insecureHashes = [h.lower() for h in config["insecure_hashes"]]
+    else:
+        insecureHashes = ['md4', 'md5', 'sha', 'sha1']
+    
+    if isinstance(context.callFunctionNameQual, str):
+        qualnameList = context.callFunctionNameQual.split('.')
+        func = qualnameList[-1]
+        if 'hashlib' in qualnameList and func == 'new':
+            args = context.callArgs
+            keywords = context.callKeywords
+            name = args[0] if args else keywords['name']
+            if (
+                isinstance(name, str) and
+                name.lower() in insecureHashes
+            ):
+                reportError(
+                    context.node.lineno - 1,
+                    context.node.col_offset,
+                    "S324",
+                    "M",
+                    "H",
+                    name.upper()
+                )