intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 52 insertions, 0 deletions

diff --git a/contrib/python/cryptography/_cffi_src/openssl/callbacks.py b/contrib/python/cryptography/_cffi_src/openssl/callbacks.py
new file mode 100644
index 00000000000..19301b973a2
--- /dev/null
+++ b/contrib/python/cryptography/_cffi_src/openssl/callbacks.py
@@ -0,0 +1,52 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+INCLUDES = """
+#include <string.h>
+"""
+
+TYPES = """
+typedef struct {
+    char *password;
+    int length;
+    int called;
+    int error;
+    int maxsize;
+} CRYPTOGRAPHY_PASSWORD_DATA;
+"""
+
+FUNCTIONS = """
+int Cryptography_pem_password_cb(char *, int, int, void *);
+"""
+
+CUSTOMIZATIONS = """
+typedef struct {
+    char *password;
+    int length;
+    int called;
+    int error;
+    int maxsize;
+} CRYPTOGRAPHY_PASSWORD_DATA;
+
+int Cryptography_pem_password_cb(char *buf, int size,
+                                  int rwflag, void *userdata) {
+    /* The password cb is only invoked if OpenSSL decides the private
+       key is encrypted. So this path only occurs if it needs a password */
+    CRYPTOGRAPHY_PASSWORD_DATA *st = (CRYPTOGRAPHY_PASSWORD_DATA *)userdata;
+    st->called += 1;
+    st->maxsize = size;
+    if (st->length == 0) {
+        st->error = -1;
+        return 0;
+    } else if (st->length < size) {
+        memcpy(buf, st->password, st->length);
+        return st->length;
+    } else {
+        st->error = -2;
+        return 0;
+    }
+}
+"""