SSL Certificate Verification failed - Firmware 1.19.0

[h0lyc0w]

My powerwall2 was recently upgraded to firmware 1.19.0. After the upgrade, Powerwall2PVOutput could no longer export data from my PW2 due to SSL issues. Here's the error message:

2018-06-19 23:15:42,334 - getPowerwallData: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:661)

I managed to get it working again by using the following environment variable to disable the HTTPS verification check before running PW_DataLogger and PW_PVOExport:
PYTHONHTTPSVERIFY=0

It's a work around for now.

[ekul135]

What O/S do you get this error on?

[h0lyc0w]

Linux raspberrypi 4.9.59-v7+ #1047 SMP Sun Oct 29 12:19:23 GMT 2017 armv7l
Python 2.7.13

[ekul135]

I've seen the error firsthand on another O/S. Have you tried sudo apt-get update && sudo apt-get install ca-certificates

[ekul135]

The issue really isn't a big one, as you said PYTHONHTTPSVERIFY=0 does work, however it's a bit of a hack and would rather sort this out properly. It's not really an issue with this code, rather an issue with ensuring the correct certificates are installed.

[h0lyc0w]

True, it's not an issue with the code. I just wanted to let you know it was encountered and a there's a workaround. The "fix" would be to add the self-signed certificate used by the gateway to the OS trusted datastore. I may do that, but since it's working, I'm ok with leaving as is.

Another option might be adding a "no verify" option to the config to ignore the certificate; similar to the environment variable workaround.

[ekul135]

Thanks for your help h0lyc0w will leave this issue open

[zzatihz1]

Argh! My Powerwall firmware was updated to 1.2 last night and now the download of data is failing. I'm not a Python programmer and am struggling to see where I can set the PYTHONHTTPSVERIFY=0 setting. Is this part of the Linux environment variables? Is this something that can be set when the Python script is invoked as part of the command line?

Thanks in advance for any help.

[zzatihz1]

Success! I tried the environment variable method and could not get it to work. But I was able to add the following code to the data logger script which does work! Thanks to http://blog.pengyifan.com/how-to-fix-python-ssl-certificate_verify_failed/ for the solution.

import os, ssl
if (not os.environ.get('PYTHONHTTPSVERIFY', '') and
getattr(ssl, '_create_unverified_context', None)):
ssl._create_default_https_context = ssl._create_unverified_context

[zzatihz1]

Spoke too soon. Still not working. I had one successful read and now it's failing again.

[zzatihz1]

I'm cautiously optimistic that it is working again. I rebooted my Raspberry Pi and the scripts seem to be working and uploading data to PVOutput. There is a lot of discussion on https://teslamotorsclub.com/tmc/threads/firmware-1-20-0.121634/ regarding the latest Powerwall 2 v1.20 firmware update. Many users have been complaining that Tesla is disabling API access for some owners.

[icepicknz]

I just got 1.20 and its requiring SSL, is there any update to the logger etc?

[ekul135]

In PW_Helper, change your http references to https

Then change the way you are calling the python script by inserting "PYTHONHTTPSVERIFY=0".

e.g. PYTHONHTTPSVERIFY=0 python your_script

[icepicknz]

I edited the URL's already and also tried that...

root@piaware-dayna:~/Powerwall2PVOutput-master# PYTHONHTTPSVERIFY=0 python /root/Powerwall2PVOutput-master/PW_Datalogger.py
2018-07-17 03:30:59,984 - Start PVOutput datalogger
2018-07-17 03:31:00,031 - getPowerwallData: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
2018-07-17 03:31:00,051 - getPowerwallSOCData: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
2018-07-17 03:31:00,052 - No data received, retrying
2018-07-17 03:31:05,089 - getPowerwallData: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
2018-07-17 03:31:05,109 - getPowerwallSOCData: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
2018-07-17 03:31:05,110 - No data received, retrying

root@piaware-dayna:/Powerwall2PVOutput-master# python --version
Python 2.7.9
root@piaware-dayna:/Powerwall2PVOutput-master#

[ekul135]

have you tried the other work around above? In the datalogger file:

import os, ssl
if (not os.environ.get('PYTHONHTTPSVERIFY', '') and
getattr(ssl, '_create_unverified_context', None)):
ssl._create_default_https_context = ssl._create_unverified_context

[icepicknz]

Yeah i did :/ just looking what else i can do now :(