Add posible to set custom path to certificate

Signed-off-by: stepanLav <lawrentievsv@gmail.com>

examples/tls-example.py

@@ -0,0 +1,92 @@
+#!/usr/bin/env python3
+#
+# Copyright Soramitsu Co., Ltd. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+
+import os
+import binascii
+from iroha import IrohaCrypto
+from iroha import Iroha, IrohaGrpc
+import sys
+
+if sys.version_info[0] < 3:
+    raise Exception('Python 3 or a more recent version is required.')
+
+print("""
+
+This example works only through a TLS connection, you must first configure torii_tls_params
+https://iroha.readthedocs.io/en/master/configure/torii-tls.html.
+
+""")
+
+IROHA_HOST_ADDR = os.getenv('IROHA_HOST_ADDR', 'localhost')
+IROHA_TLS_PORT = os.getenv('IROHA_PORT', '55552')
+ADMIN_ACCOUNT_ID = os.getenv('ADMIN_ACCOUNT_ID', 'admin@test')
+ADMIN_PRIVATE_KEY = os.getenv(
+    'ADMIN_PRIVATE_KEY', 'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506cab70')
+iroha = Iroha(ADMIN_ACCOUNT_ID)
+cert = "-----BEGIN CERTIFICATE-----" \
+       "MIIDiDCCAnACCQDp6UiqpNfRazANBgkqhkiG9w0BAQsFADCBhTELMAkGA1UEBhMC" \
+       "cnUxDjAMBgNVBAgMBWlyb2hhMRIwEAYDVQQHDAlpbm5vcG9saXMxEjAQBgNVBAoM" \
+       "CXNvcmFtaXRzdTENMAsGA1UECwwEc29yYTESMBAGA1UEAwwJbG9jYWxob3N0MRsw" \
+       "GQYJKoZIhvcNAQkBFgxtYWlsQG1haWwucnUwHhcNMjAxMTE4MDY0NTE5WhcNMjAx" \
+       "MjE4MDY0NTE5WjCBhTELMAkGA1UEBhMCcnUxDjAMBgNVBAgMBWlyb2hhMRIwEAYD" \
+       "VQQHDAlpbm5vcG9saXMxEjAQBgNVBAoMCXNvcmFtaXRzdTENMAsGA1UECwwEc29y" \
+       "YTESMBAGA1UEAwwJbG9jYWxob3N0MRswGQYJKoZIhvcNAQkBFgxtYWlsQG1haWwu" \
+       "cnUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDfpr+Zep0h6LhArU+y" \
+       "bInKlTvizt3E+KxtuPgkhDpd3D7PwOnJ0BJhNXPmTcAMfa3Iye6Hg6Dz4tOOKpxX" \
+       "2QcYyVjXf0/vvBXf6DsLHHGsq+JHHvDVVTlScPj7Y88dLJukvGZRORYbprTMxxrw" \
+       "XV2EXkrsTsLx8zNiXvj0YbO6VtSGQAvdjpOmILwil7HVQnBi4k2wLndl+wDXJD8L" \
+       "a89W7lEZPuq454WMRKByGTJOr/xdwAnJdNb0WyIhvTgQiHkZEbpTwaCq5+t/NliR" \
+       "ZmFgh2nIFN4FFCiT1uudqNhla42rlU/ElHv4cKcd3EmBVTyLv52ttD7ndMgss4Us" \
+       "Znu/AgMBAAEwDQYJKoZIhvcNAQELBQADggEBAKCyDkLMu6iUMjaggpOfVepA/Fa7" \
+       "LETyrf/S2QDb1igGi2Eg5AXquVSoy7pjQvQ7IZvS+wRLWiEoQSYEN8teu7VJcOAY" \
+       "f6W7IX0qR8JsqO4TjX4yjZLKPpsqd4twA+voGk9RAejFBYazYMne3phhKjH5vfKD" \
+       "m7IiOWPRX6Fg4TDzQHRbzsqlJ0FmTqTXorWybPif1oBcuVHjBHSqXSYULQhAN9cw" \
+       "XNB8vpIi7/294k6OH5pZ0+GCPQmR1M3iYH+av12aUb8QtHAxgtxyHui1qeA+hoQw" \
+       "InopdaZUbuCd3Y+AvetfGEIo+DlniGbXyeFXFrWRJotITjG7UVc6U/SB6Pg=" \
+       "-----END CERTIFICATE-----"
+byte_cert = bytes(cert, 'utf-8')
+net = IrohaGrpc('{}:{}'.format(IROHA_HOST_ADDR, IROHA_TLS_PORT), secure=None, root_certificates=byte_cert)
+
+
+def trace(func):
+    """
+    A decorator for tracing methods' begin/end execution points
+    """
+
+    def tracer(*args, **kwargs):
+        name = func.__name__
+        print('\tEntering "{}"'.format(name))
+        result = func(*args, **kwargs)
+        print('\tLeaving "{}"'.format(name))
+        return result
+
+    return tracer
+
+
+@trace
+def send_transaction_and_print_status(transaction):
+    hex_hash = binascii.hexlify(IrohaCrypto.hash(transaction))
+    print('Transaction hash = {}, creator = {}'.format(
+        hex_hash, transaction.payload.reduced_payload.creator_account_id))
+    net.send_tx(transaction)
+    for status in net.tx_status_stream(transaction):
+        print(status)
+
+
+@trace
+def add_coin_to_admin():
+    """
+    Add 1000.00 units of 'coin#domain' to 'admin@test'
+    """
+    tx = iroha.transaction([
+        iroha.command('AddAssetQuantity',
+                      asset_id='coin#domain', amount='1000.00')
+    ])
+    IrohaCrypto.sign_transaction(tx, ADMIN_PRIVATE_KEY)
+    send_transaction_and_print_status(tx)
+
+
+add_coin_to_admin()

iroha/iroha.py

@@ -341,17 +341,27 @@ class IrohaGrpc(object):
     Possible implementation of gRPC transport to Iroha
     """
 
-    def __init__(self, address=None, timeout=None, secure=False):
+    def __init__(self, address=None, timeout=None, secure=False, root_certificates=None,
+                 private_key=None,
+                 certificate_chain=None):
         """
         Create Iroha gRPC client
         :param address: Iroha Torii address with port, example "127.0.0.1:50051"
         :param timeout: timeout for network I/O operations in seconds
         :param secure: enable grpc ssl channel
+        :param root_certificates: The PEM-encoded root certificates as a byte string,
+        None for default location chosen by gRPC
+        :param private_key: The PEM-encoded private key as a byte string, or None if no
+        private key should be used.
+        :param certificate_chain: The PEM-encoded certificate chain as a byte string
+        to use or None if no certificate chain should be used.
         """
         self._address = address if address else '127.0.0.1:50051'
 
         if secure:
-            self._channel = grpc.secure_channel(self._address, grpc.ssl_channel_credentials())
+            self._channel = grpc.secure_channel(self._address,
+                                                grpc.ssl_channel_credentials(root_certificates, private_key,
+                                                                             certificate_chain))
         else:
             self._channel = grpc.insecure_channel(self._address)