Ejabberd - ejabberd_auth_external:failure:103 External authentication program failed when calling 'check_password' - xmpp

Question

I already have a schema of users with authentication-key and wanted to do authentication via that. I tried implementing authentication via sql but due to different structure of my schema I was getting error and so I implemented external-authentication method. The technologies and OS used in my application are :
Node.JS
Ejabberd as XMPP server
MySQL Database
React-Native (Front-End)
OS - Ubuntu 18.04
I implemented the external authentication configuration as mentioned in https://docs.ejabberd.im/admin/configuration/#external-script and took php script https://www.ejabberd.im/files/efiles/check_mysql.php.txt as an example. But I am getting the below mentioned error in error.log. In ejabberd.yml I have done following configuration.
...
host_config:
"example.org.co":
auth_method: [external]
extauth_program: "/usr/local/etc/ejabberd/JabberAuth.class.php"
auth_use_cache: false
...
Also, is there any external auth javascript script?
Here is the error.log and ejabberd.log as mentioned below
error.log
2019-03-19 07:19:16.814 [error]
<0.524.0>#ejabberd_auth_external:failure:103 External authentication
program failed when calling 'check_password' for admin#example.org.co:
disconnected
ejabberd.log
2019-03-19 07:19:16.811 [debug] <0.524.0>#ejabberd_http:init:151 S:
[{[<<"api">>],mod_http_api},{[<<"admin">>],ejabberd_web_admin}]
2019-03-19 07:19:16.811 [debug]
<0.524.0>#ejabberd_http:process_header:307 (#Port<0.13811>) http
query: 'POST' <<"/api/register">>
2019-03-19 07:19:16.811 [debug]
<0.524.0>#ejabberd_http:process:394 [<<"api">>,<<"register">>] matches
[<<"api">>]
2019-03-19 07:19:16.811 [info]
<0.364.0>#ejabberd_listener:accept:238 (<0.524.0>) Accepted connection
::ffff:ip -> ::ffff:ip
2019-03-19 07:19:16.814 [info]
<0.524.0>#mod_http_api:log:548 API call register
[{<<"user">>,<<"test">>},{<<"host">>,<<"example.org.co">>},{<<"password">>,<<"test">>}]
from ::ffff:ip
2019-03-19 07:19:16.814 [error]
<0.524.0>#ejabberd_auth_external:failure:103 External authentication
program failed when calling 'check_password' for admin#example.org.co:
disconnected
2019-03-19 07:19:16.814 [debug]
<0.524.0>#mod_http_api:extract_auth:171 Invalid auth data:
{error,invalid_auth}
Any help regarding this topic will be appreciated.

Answer 1

1) Your config about the auth_method looks good.
2) Here is a python script I've used and upgraded to make an external authentication for ejabberd.
#!/usr/bin/python
import sys
from struct import *
import os
def openAuth(args):
(user, server, password) = args
# Implement your interactions with your service / database
# Return True or False
return True
def openIsuser(args):
(user, server) = args
# Implement your interactions with your service / database
# Return True or False
return True
def loop():
switcher = {
"auth": openAuth,
"isuser": openIsuser,
"setpass": lambda(none): True,
"tryregister": lambda(none): False,
"removeuser": lambda(none): False,
"removeuser3": lambda(none): False,
}
data = from_ejabberd()
to_ejabberd(switcher.get(data[0], lambda(none): False)(data[1:]))
loop()
def from_ejabberd():
input_length = sys.stdin.read(2)
(size,) = unpack('>h', input_length)
return sys.stdin.read(size).split(':')
def to_ejabberd(result):
if result:
sys.stdout.write('\x00\x02\x00\x01')
else:
sys.stdout.write('\x00\x02\x00\x00')
sys.stdout.flush()
if __name__ == "__main__":
try:
loop()
except error:
pass
I didn't created the communication with Ejabberd from_ejabberd() and to_ejabberd(), and unfortunately can't find back the sources.