Fix oscrypto support for libcrypto.35.dylib and libssl.35.dylib

It seems certain version pairs have to be used together, but Apple
doesn't really publish this info, and it is harder to figure out now
that system dylibs aren't show in the filesystem.

The other known good pair is libcrypto.42.dylib and libssl.44.dylib.

Author: wbond

oscrypto/_openssl/_libssl.py

@@ -93,15 +93,15 @@ class LibsslConst():
     LibsslConst.SSL_R_DH_KEY_TOO_SMALL = 394
 
 
+error_code_version_info = libcrypto_version_info
 # The Apple version of libssl seems to have changed various codes for
 # some reason, but the rest of the API is still OpenSSL 1.0.1
-if sys.platform == 'darwin' and re.match(r'/usr/lib/libssl\.\d', _backend_config().get('libssl_path', '')):
-    LibsslConst.SSL_F_TLS_PROCESS_SERVER_CERTIFICATE = 7
-    LibsslConst.SSL_F_SSL3_GET_KEY_EXCHANGE = 9
-    LibsslConst.SSL_F_SSL3_READ_BYTES = 4
-    LibsslConst.SSL_F_SSL3_GET_RECORD = 4
-    LibsslConst.SSL_F_SSL23_GET_SERVER_HELLO = 4
-    error_code_version_info = (1, 1, 0)
-
-else:
-    error_code_version_info = libcrypto_version_info
+if sys.platform == 'darwin':
+    libssl_abi_match = re.match(r'/usr/lib/libssl\.(\d+)', _backend_config().get('libssl_path', ''))
+    if libssl_abi_match and int(libssl_abi_match.group(1)) >= 44:
+        LibsslConst.SSL_F_TLS_PROCESS_SERVER_CERTIFICATE = 7
+        LibsslConst.SSL_F_SSL3_GET_KEY_EXCHANGE = 9
+        LibsslConst.SSL_F_SSL3_READ_BYTES = 4
+        LibsslConst.SSL_F_SSL3_GET_RECORD = 4
+        LibsslConst.SSL_F_SSL23_GET_SERVER_HELLO = 4
+        error_code_version_info = (1, 1, 0)