OVMS3-idf/tools/esp_prov/prov/wifi_prov.py

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# Copyright 2018 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# APIs for interpreting and creating protobuf packets for Wi-Fi provisioning
from __future__ import print_function
from future.utils import tobytes
import utils
import proto
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def print_verbose(security_ctx, data):
if (security_ctx.verbose):
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print("++++ " + data + " ++++")
def config_get_status_request(security_ctx):
# Form protobuf request packet for GetStatus command
cfg1 = proto.wifi_config_pb2.WiFiConfigPayload()
cfg1.msg = proto.wifi_config_pb2.TypeCmdGetStatus
cmd_get_status = proto.wifi_config_pb2.CmdGetStatus()
cfg1.cmd_get_status.MergeFrom(cmd_get_status)
encrypted_cfg = security_ctx.encrypt_data(cfg1.SerializeToString()).decode('latin-1')
print_verbose(security_ctx, "Client -> Device (Encrypted CmdGetStatus) " + utils.str_to_hexstr(encrypted_cfg))
return encrypted_cfg
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def config_get_status_response(security_ctx, response_data):
# Interpret protobuf response packet from GetStatus command
decrypted_message = security_ctx.decrypt_data(tobytes(response_data))
cmd_resp1 = proto.wifi_config_pb2.WiFiConfigPayload()
cmd_resp1.ParseFromString(decrypted_message)
print_verbose(security_ctx, "Response type " + str(cmd_resp1.msg))
print_verbose(security_ctx, "Response status " + str(cmd_resp1.resp_get_status.status))
if cmd_resp1.resp_get_status.sta_state == 0:
print("++++ WiFi state: " + "connected ++++")
elif cmd_resp1.resp_get_status.sta_state == 1:
print("++++ WiFi state: " + "connecting... ++++")
elif cmd_resp1.resp_get_status.sta_state == 2:
print("++++ WiFi state: " + "disconnected ++++")
elif cmd_resp1.resp_get_status.sta_state == 3:
print("++++ WiFi state: " + "connection failed ++++")
if cmd_resp1.resp_get_status.fail_reason == 0:
print("++++ Failure reason: " + "Incorrect Password ++++")
elif cmd_resp1.resp_get_status.fail_reason == 1:
print("++++ Failure reason: " + "Incorrect SSID ++++")
return cmd_resp1.resp_get_status.sta_state
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def config_set_config_request(security_ctx, ssid, passphrase):
# Form protobuf request packet for SetConfig command
cmd = proto.wifi_config_pb2.WiFiConfigPayload()
cmd.msg = proto.wifi_config_pb2.TypeCmdSetConfig
cmd.cmd_set_config.ssid = tobytes(ssid)
cmd.cmd_set_config.passphrase = tobytes(passphrase)
enc_cmd = security_ctx.encrypt_data(cmd.SerializeToString()).decode('latin-1')
print_verbose(security_ctx, "Client -> Device (SetConfig cmd) " + utils.str_to_hexstr(enc_cmd))
return enc_cmd
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def config_set_config_response(security_ctx, response_data):
# Interpret protobuf response packet from SetConfig command
decrypt = security_ctx.decrypt_data(tobytes(response_data))
cmd_resp4 = proto.wifi_config_pb2.WiFiConfigPayload()
cmd_resp4.ParseFromString(decrypt)
print_verbose(security_ctx, "SetConfig status " + str(cmd_resp4.resp_set_config.status))
return cmd_resp4.resp_set_config.status
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def config_apply_config_request(security_ctx):
# Form protobuf request packet for ApplyConfig command
cmd = proto.wifi_config_pb2.WiFiConfigPayload()
cmd.msg = proto.wifi_config_pb2.TypeCmdApplyConfig
enc_cmd = security_ctx.encrypt_data(cmd.SerializeToString()).decode('latin-1')
print_verbose(security_ctx, "Client -> Device (ApplyConfig cmd) " + utils.str_to_hexstr(enc_cmd))
return enc_cmd
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def config_apply_config_response(security_ctx, response_data):
# Interpret protobuf response packet from ApplyConfig command
decrypt = security_ctx.decrypt_data(tobytes(response_data))
cmd_resp5 = proto.wifi_config_pb2.WiFiConfigPayload()
cmd_resp5.ParseFromString(decrypt)
print_verbose(security_ctx, "ApplyConfig status " + str(cmd_resp5.resp_apply_config.status))
return cmd_resp5.resp_apply_config.status