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howdy/pam.py
2018-02-10 12:40:26 +01:00

54 lines
1.9 KiB
Python

# PAM interface in python, launches compare.py
# Import required modules
import subprocess
import sys
import os
# pam-python is running python 2, so we use the old module here
import ConfigParser
# Read config from disk
config = ConfigParser.ConfigParser()
config.read(os.path.dirname(os.path.abspath(__file__)) + "/config.ini")
def doAuth(pamh):
"""Start authentication in a seperate process"""
# Run compare as python3 subprocess to circumvent python version and import issues
status = subprocess.call(["python3", os.path.dirname(os.path.abspath(__file__)) + "/compare.py", pamh.get_user()])
# Status 10 means we couldn't find any face models
if status == 10:
if config.get("core", "suppress_unknown") != "true":
pamh.conversation(pamh.Message(pamh.PAM_ERROR_MSG, "No face model known"))
return pamh.PAM_USER_UNKNOWN
# Status 11 means we exceded the maximum retry count
if status == 11:
pamh.conversation(pamh.Message(pamh.PAM_ERROR_MSG, "Face detection timeout reached"))
return pamh.PAM_AUTH_ERR
# Status 0 is a successful exit
if status == 0:
if config.get("core", "no_confirmation") != "true":
pamh.conversation(pamh.Message(pamh.PAM_TEXT_INFO, "Identified face as " + pamh.get_user()))
return pamh.PAM_SUCCESS
# Otherwise, we can't discribe what happend but it wasn't successful
pamh.conversation(pamh.Message(pamh.PAM_ERROR_MSG, "Unknown error: " + str(status)))
return pamh.PAM_SYSTEM_ERR
def pam_sm_authenticate(pamh, flags, args):
"""Called by PAM when the user wants to authenticate, in sudo for example"""
return doAuth(pamh)
def pam_sm_open_session(pamh, flags, args):
"""Called when starting a session, such as su"""
return doAuth(pamh)
def pam_sm_close_session(pamh, flags, argv):
"""We don't need to clean anyting up at the end of a session, so return true"""
return pamh.PAM_SUCCESS
def pam_sm_setcred(pamh, flags, argv):
"""We don't need set any credentials, so return true"""
return pamh.PAM_SUCCESS